Wednesday, October 30, 2019

History questions Essay Example | Topics and Well Written Essays - 1500 words

History questions - Essay Example Abraham Lincoln told â€Å"enemy is at your door, wait not to meet him at your hearthstone, meet him at the doorsill, and drive him from the temple of liberty, or pull down its pillars and involve him in a common ruin† (McPherson 212). This should be considered as evidence that our country is not safe anymore. Abraham Lincoln also mentioned that he thoroughly disliked to comment on the various tactics employed by historical leaders who played an instrumental role in earlier wars. Government always must be â€Å"of the people, by the people and for the people† and victory always must be â€Å"an anti slavery triumph† (McPherson 218). Jefferson Davis strongly disagreed on excessive individualism that were ruling the states. He pointed out that this kind of extreme individualism won’t bring any good to the state. Instead, it will only create neglect towards teamwork. He also emphasized that â€Å"war meant it’s for all and not for single†. This means, war is always for a group of people and not for a single person. He told â€Å"each state has the right of revolution† (McPherson 240). Political revolution or any kind of revolution always placed the state in a crucial, authori tative position and the right of revolution is for everyone. 2. If as Mr. Sparks contends what is Past is prologue, there is much in the Civil War Era that is relevant to your lives today. Please provide 3 examples of how a study of The Civil War helps you understand the United States in 2010. If a civil war breaks out in the Unites States in 2010, it, will, perhaps mark the end of this country. There would be violence, bloodshed, riots and insurgencies all over the country, leading to loss of millions of human lives as well as the ultimate breakdown of the country’s vast social and economic infrastructure. A study of the civil war has helped us to understand the

Monday, October 28, 2019

Ang Katay Essay Example for Free

Ang Katay Essay Riting a biography is hard work. Whether its analyzing the mindset of philosophers who died many millennia ago, or encapsulating the lasting impact of the life of an American president, its always a great challenge. Fortunately, youre not alone on your quest to write an A essay. Couselling on Smoking Cessation Therapeutics II: Counselling on Smoking Cessation Nancy Unsworth March 18, 2011 Counselling on Smoking Cessation For the purpose of this assignment, this client will Premium 4130 Words 17 Pages Jack London Jack London Jack London is one of the most famous American writers. He wrote many great books over his short lifetime. Many of his stories are about animals and nature Premium 2680 Words 11 Pages Mary Shelley: Life of Literature I, the miserable and the abandoned, am an abortion, to be spurned at, and kicked, and trampled on (SparkNote on Frankenstein). This famous quote said by Frankenstein, in Premium 1429 Words 6 Pages Chief Lieutenant of the Tuskegee Machine Gaitor, Bridget Word Count: 1,859 The Chief Lieutenant of the Tuskegee Machine by David H. Jackson Jr. exemplifies the life of Charles Banks as Booker T. Washingtons Premium 1881 Words 8 Pages John Steinbecks Greatest Accomplishments John Steinbeck, born in 1902 in Salinas California to John Ernst and Olive Hamilton Steinbeck, became one of the greatest American writers of his century. Growing up Premium 973 Words 4 Pages The Consumer Appeal of Underdog Branding.Docx

Saturday, October 26, 2019

Unity Among Student Scientists :: Personal Narrative Essays

Unity Among Student Scientists This summer I had the opportunity to attend the APEC Youth Festival in Singapore. On July 23, I arrived in San Francisco at the Marriott to gather with 19 other students from around the United States. The purpose of this gathering was to discuss our future trip to Singapore and to get acquainted with each other before we left. APEC stands for Asian Pacific Economic Cooperation. The purpose of the APEC Youth Festival is to bring unity among other student scientists from all around the world. Students who attended the Festival came from eleven different economies and all brought a unique culture with them. The festival included various activities, such as a cultural exchange, science and technology lectures, a youth science summit, a farewell party, and tons more. Every activity at the science festival was a learning experience. Two days of cultural performances were held, in which each of the economies put on a five-minute performance representing their culture. My favorite of these was the drum performance by the Koreans, but each of the dances by the many Asian cultures were equally good. And the U.S. economy's performance . . . who could forget about that? Did anyone really know what they were doing? Although the U.S. economy's cultural presentation definitely didn't turn out as expected, we gave the audience a good laugh and started a new craze among the other attendees: the shark song. The students' cultures were reflected not only in the two cultural presentations that were held, but also in the way they presented themselves at the conference. By attending the AYSF, I received a little taste of different cultures stretching all the way from Australia to Thailand. The real cultural experience came from the learning about the laws, languages and customs of Singapore. In Singapore, there are many laws that are strictly enforced, such as no chewing gum, no picking flowers, mandatory flushing of toilets and no bird feeding. The most outrageous law is the "no peeing in elevators" law. By the cleanliness of Singapore, one could tell the laws are enforced. In Singapore, just about every student that I had the opportunity to meet spoke two different languages. All spoke English and another Asian language. I had the opportunity to get to know students that spoke Chinese, Malay, Indonesian, Thai, and many more.

Thursday, October 24, 2019

Grignard Reagent

1598 Organometallics 2009, 28, 1598–1605 CoVer Essay The Grignard Reagents Dietmar Seyferth Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 ReceiVed February 4, 2009 During the past 100 years the Grignard reagents probably have been the most widely used organometallic reagents. Most of them are easily prepared in ethereal solution (usually diethyl ether or, since the early 1950s, THF) by the reaction of an organic halide with metallic magnesium (eq 1).Table 1. Composition of Diethyl Ether Solutions of Various Grignard Reagents at Equilibrium (in mol %), 2RMgX h R2Mg + MgX2a RX in RX + Mg reacn CH3I C2H5I C2H5Br C2H5Cl n-C3H7I n-C3H7Br n-C3H7Cl C6H5I C6H5Br a RMgX 87. 0 43. 0 41. 0 15. 0 24. 0 24. 0 17. 0 38. 0 30. 0 R2Mg ) MgX2 6. 5 28. 5 29. 5 42. 5 38. 0 38. 0 41. 5 31. 0 35. 0 RX + Mg f RMgX (X ) Cl, Br, I) (1) Most of them are stable in ethereal solution (although atmospheric moisture and oxygen should be excluded) and in gene ral are quite reactive.Discovered by Victor Grignard at the University of Lyon in France in 1900,1 their ease of preparation and their broad applications in organic and organometallic synthesis made these new organomagnesium reagents an instant success. The importance of this contribution to synthetic chemistry was recognized very early, and for his discovery Grignard was awarded a Nobel Prize in Chemistry in 1912. Our cover molecule is the monomeric ethylmagnesium bromide bis(diethyl etherate) (1), whose solid-state molecular structure was determined by an X-ray diffraction study by Lloyd Guggenberger and RobertRundle in 1964 using crystals isolated from a diethyl ether solution of a C2H5Br/Mg reaction mixture by slow cooling with a stream of cold gaseous nitrogen. 2-4 Adapted from: Schlenk, W. , Jr. Ber. Dtsch. Chem. Ges. 1931, 64, 734. Wilhelm Schlenk and his son discovered 80 years ago, more than one magnesium-containing species exists in the diethyl ether solution of a Grignard reagent. 5 A redistribution of the substituents on magnesium takes place, and the RMgX species ends up in equilibrium with the two symmetrical species, the diorganomagnesium and the magnesium dihalide: the â€Å"Schlenk Equilibrium† (eq 2). 2RMgX h R2Mg + MgX2 (2) Generally written as â€Å"RMgX† in textbooks, monographs and research papers, the Grignard reagents in ethereal solution are more complicated than this simple formula indicates. As (1) (a) Grignard, V. Compt. rend. Hebd. Seances Acad. Sci. 1900, 130, ? 1322. (b) Grignard, V. Dissertation â€Å"Theses sur les combinaisons organo` magnesienes mixtes et leur application a des syntheses†, University of Lyon, ` ` Lyon, France, 1901. (2) (a) Guggenberger, L. J. ; Rundle, R. E. J. Am. Chem. Soc. 1964, 86, 5344. (b) Guggenberger, L. J. ; Rundle, R. E. J. Am. Chem. Soc. 1968, 90, 5375. 3) A crystalline solid, CH3MgI  · (n-C5H11)2O, was isolated and identi? ed as such by elemental analysis (Mg and I) in 1908 : Zerewitinoff, Th. Ber. Dtsch. Chem. Ges. 1908, 41, 2244. The oxonium structure The species that contain Mg-halogen bonds can be precipitated from Grignard reagent solutions in diethyl ether by the addition of 1,4-dioxane. An insoluble, polymeric 1,4-dioxane adduct is formed, leaving behind a solution of R2Mg5sa useful preparation of dialkyl- and diarylmagnesium reagents. 6 Wilhelm Schlenk, Jr. analyzed the 1,4-dioxane precipitations from a number of Grignard reagent solutions. Assuming that the precipitation is essentially instantaneous, i. e. , that the calculated R2Mg, MgX2, and RMgX percentages re? ect the actual composition of the Grignard reagent solution at equilibrium, Schlenk reported the compositions collected in Table 1. Direct evidence (5) Schlenk, W. ; Schlenk, W. , Jr. Ber. Dtsch. Chem. Ges. 1929, 62, 920. (6) (a) Cope, A. C. J. Am. Chem. Soc. 1935, 57, 2238. (b) As Erwin Weiss found, evaporation of diethyl ether solutions of methyl- and ethylmagnesium bromide and chl oride at reduced pressure followed by heating of the colorless solid residues at ca. 00  °C and 0. 001 mmHg for several hours gave a mixture of the respective pure, solvent-free, polymeric R2Mg compounds and magnesium halides. The solid MgCl2 thus obtained differed from a sample obtained from a MgCl2 melt in that its lattice showed a strong stacking disorder. This form of MgCl2 had an extremely high surface area: Weiss, E. Chem. Ber. 1965, 98, 2805. (7) Schlenk, W. , Jr. Ber. Dtsch. Chem. Ges. 1931, 64, 734 Further additions to the examples in Table 1 were soon thereafter reported by other workers: (a) Noller, C. R. ; Hilmer, F. B. J. Am. Chem. Soc. 1932, 54, 2503. (b) Johnson, G. O. Adkins, H. J. Am. Chem. Soc. 1932, 54, 1943. (c) Cope, A. C. J. Am. Chem. Soc. 1934, 56, 1578. was written for this compound. Earlier workers had isolated noncrystalline solid samples of etherates, e. g. , C2H5MgI  · (C2H5)2O and RMgI  · 2(C2H5)2O. (4) Other early Grignard reagent crystal structur es: (a) Stucky, G. D. ; Rundle, R. E. J. Am. Chem. Soc. 1964, 86, 4825 (C6H5MgBr  · 2Et2O). (b) Vallino, M. J. Organomet. Chem. 1969, 20, 1 (CH3MgBr  · 3THF). . 10. 1021/om900088z CCC: $40. 75 ? 2009 American Chemical Society Publication on Web 03/16/2009 Organometallics, Vol. 28, No. 6, 2009 1599 Figure 1.Association of several Grignard compounds in tetrahydrofuran (J. Am. Chem. Soc. 1969, 91, 3847. ). that solutions of â€Å"CH3MgBr† in diethyl ether contain CH3MgBr and (CH3)2Mg was obtained by Ashby and co-workers by means of 1H NMR spectroscopic measurements at -105  °C. Solutions of â€Å"t-butylmagnesium chloride† in diethyl ether also were studied. 8 The tendency of the halide substituents in the RMgX and MgX2 species present in ethereal solution at equilibrium to form bridges between magnesium atoms, Mg-X-Mg, in a Lewis base/Lewis acid type interaction further complicates the nature of the Grignard reagent in ethereal solvents.In a very thorough study of the association factors of various Grignard reagents in diethyl ether and THF by careful ebullioscopic molecular weight measurements, Eugene Ashby and Frank Walker at the Georgia Institute of Technology found that monomeric, dimeric, and higher oligomeric species were present, depending on the solvent and the halogen and the organic substituents on the magnesium atom. 9 Included in this study along with data for the â€Å"RMgX† solutions were data for a few R2Mg compounds and for the magnesium dihalides.As Figure 1 shows, the observed association factor (the i value is the apparent molecular weight divided by the formula weight of the monoetherate) shows that the Grignard reagents and (C6H5)2Mg are close to monomeric in the relatively strong Lewis basic THF. The picture is quite different in diethyl ether solution (Figures 2 and 3), with association factors of 1 to nearly 4 for solute concentrations up to ca. 3 molal. It is not clear what these i values mean in terms of the a ctual species present in these solutions.On the assumption that the Schlenk equilibrium is operative in all cases, in view of the presence of a signi? cant concentration of MgX2, one cannot expect only simple solvated species of type i(R)Mg-X] n [ i (average n ) i). Toney and Stucky isolated crystals of a dimeric species, 2, from a solution of â€Å"C2H5MgBr† in di-n-butyl ether by addition of this solution to triethylamine. 10 The molecular Figure 2. Association of alkylmagnesium chlorides in diethyl ether. Demonstration of importance of halogen vs R group in determining the form of association in diethyl ether (J. Am. Chem. Soc. 1969, 91, 3848. ).Figure 3. Association of several alkyl- and arylmagnesium bromides and iodides and related magnesium compounds in diethyl ether (J. Am. Chem. Soc. 1969, 91, 3848. ). structure, as determined by X-ray analysis, contained a double Br bridge with the ethyl groups in a trans arrangement. That (8) In â€Å"CH3MgBr† solutions in d iethyl ether: (a) Ashby, E. C. ; Parrish, G. ; Walker, F. Chem. Commun. 1969, 1464. (b) â€Å"(CH3)3CMgCl† solutions in diethyl ether at-26  °C: Parris, G. ; Ashby, E. C. J. Am. Chem. Soc. 1971, 93, 1206. (9) (a) Walker, F. W. ; Ashby, E. C. J. Am. Chem. Soc. 1969, 91, 3845. (b) Ashby, E. C. Bull. Soc.Chim. Fr. 1972, 2133 (review, in English). (c) Meisenheimer, J. ; Schlichenmaier. Ber. Dtsch. Chem. Ges. 1928, 61 (an earlier, similar, but more limited study in diethyl ether). more complicated structures can be present in an â€Å"RMgX† solution in diethyl ether was demonstrated by the determination of the X-ray crystal structure of a crystalline compound obtained from a THF solution of â€Å"C2H5MgCl† of composition C2H5Mg2Cl3. This compound was not a simple Cl-bridged dimer, as the empirical formula might suggest. Actually, it was a tetramer (Figure 4) in which the Mg atoms have a coordination number greater than 4. 1 There is a caveat, however: the species t hat crystallizes from a Grignard reagent solution does not necessarily directly re? ect what species are swimming around in the solution. The crystalline solid shown in Figure 4 could well have self-assembled during the crystallization process by combination of two molecules of the C2H5Mg2Cl3 dimer and not been present in solution at all. Even in the case of monomeric â€Å"RMgX† in THF solution, the Schlenk equilibrium will be operative and the strongly Lewis basic THF apparently prevents halide bridging between Mg atoms.Consequently, the (10) Toney, J. ; Stucky, G. D. Chem. Commun. 1967, 1168. (11) Toney, J. ; Stucky, G. D. J. Organomet. Chem. 1971, 28, 5. 1600 Organometallics, Vol. 28, No. 6, 2009 Scheme 1 Figure 4. Molecular structure of [C2H5Mg2Cl3(C4H8O)3]2, a tetrameric Grignard reagent. Modi? ed from Toney and Stucky (J. Organomet. Chem. 1971, 28, 15. (copyright 1971, with permission from Elsevier)). presence of monomeric RMgX, R2Mg, and MgX2, all solvated, would resu lt in the measurement of an association factor of 1, as Walker and Ashby observed.There are so many factors that bear on the question of the constitution of a given Grignard reagent in ethereal solutionsthe Lewis basicity and steric properties of the ether solvent, the electronegativity and size of the halogen atom in RMgX, the nature and steric properties of the organic substituent on the magnesium atom. These will affect the magnitude of the equilibrium constant of the Schlenk equilibrium and the extent of Mg-X-Mg bridging. For most applications in synthetic chemistry it will suf? ce to take the easy way outsto regard and to write the Grignard reagent as RMgX.There is another interesting and useful property of ethereal Grignard reagent solutions. The magnesium species are weak electrolytes in such solvents of low dielectric constant, and â€Å"RMgX† solutions conduct an electric current. 12 The electrolysis of solutions of organomagnesium halides was studied in some detail by Kondyrew at the State Research Institute in Leningrad13 and by Ward Evans and his students at Northwestern University. 14 During the electrolysis, magnesium species migrate both to the cathode and to the anode. Scheme 1 shows the simplest picture based on RMgX. Metallic magnesium is formed at the cathode. 12) The earliest report appears to be a 1912 French paper: Jolibois, P. Compt. rend. Hebd. Seances Acad. Sci. 1912, 155, 213. See also: Nelson, ? J. M. ; Evans, W. V. J. Am. Chem. Soc. 1917, 39, 82. (13) (a) Kondyrew, N. W. Ber. Dtsch. Chem. Ges. 1925, 58, 459. (b) Kondyrew, N. W. ; Manojew, D. P. Ber. Dtsch. Chem. Ges. 1925, 58, 464. (c) Kondyrew, N. W. Ber. Dtsch. Chem. Ges. 1928, 61, 208. (d) Kondyrew, N. W. ; Ssusi, A. K. Ber. Dtsch. Chem. Ges. 1929, 62, 1856. (14) The Evans group published many papers in J. Am. Chem. Soc. during the 1933-1942 period. See, for example: (a) Evans, W. V. ; Lee, F.H. J. Am. Chem. Soc. 1934, 56, 654. (b) Evans, W. V. ; Field, E. J. Am. Chem. Soc . 1936, 58, 720. (c) Evans, W. V. ; Braithwaite, D. J. Am. Chem. Soc. 1939, 61, 898. (d) Evans, W. V. ; Braithwaite, D. ; Field, E. J. Am. Chem. Soc. 1940, 62, 534. (e) Evans, W. V. ; Pearson, R. J. Am. Chem. Soc. 1942, 64, 2865. The alkyl radicals formed at the anode can undergo the usual alkyl radical processes of coupling (to R-R), disproportionation (to RH + R(-H)), or, if the anode is composed of a reactive metal such as zinc, aluminum, cadmium, or lead, they can attack the anode to form an organometallic compound.A graduate student of Evans, David G. Braithwaite, joined the Nalco Chemical Co. after he graduated and developed an electrolytic process for the commercialscale syntheses of tetramethyl- and tetraethyllead antiknock agents in which the respective alkyl Grignard reagents were electrolyzed in a mixed THF/diethylene glycol dimethyl ether solvent system using a lead anode and a steel cathode. 15 The reactions of the Grignard reagents with organic, organometallic, and ino rganic substrates and their applications are too numerous and varied to be covered here.Not only do they ? nd extensive use on a small to moderate scale in research laboratories but they also have been prepared and utilized on a large scale in diverse industrial processes. For the most part they react as nucleophilic reagents, as would be expected, on the basis of the polarity of the carbon-magnesium bond, C? –Mg? +. However, they also can undergo electron transfer reactions with appropriate electron-acceptor substrates. They are weak bases capable of deprotonating the stronger weak organic acids such as terminal acetylenes and cyclopentadiene.Their basicity can be enhanced (as can be the basicity of organolithium reagents) by the addition to RMgX solutions in ethers of additives such as hexamethylphosphoric triamide (HMPA) and N-methyl-2-pyrrolidinone (NMP) or alkali-metal alkoxides. All such information can be found in books devoted solely or in part to Grignard reagents. 1 6 Two special topics are of current interest and merit special mention. (1) The preparation of highly functionalized organomagnesium reagents by Paul Knochel and his co-workers at the University of Munich17 by means of halogen-magnesium exchange (e. . , eq 3). The availability of reagents such as 3-8 (which must be utilized at low temperature) has added a new and spectacular dimension to Grignard reagent chemistry. (2) The synthesis of ole? ns, styrenes, 1,3-dienes and biaryl derivatives by the crosscoupling of Grignard reagents with organic halides. The crosscoupling of Grignard reagents with vinylic halides was discovered by Morris Kharasch and Charles Fuchs at the University of Chicago Organometallics, Vol. 28, No. 6, 2009 1601 Table 2.Transition Metal Halide Catalyzed Homocoupling of Phenylmagnesium Iodidea metal halide FeCl2 CoBr2 NiBr2 RuCl3 RhCl3 PdCl2 OsCl3 IrCl3 a amt, mol 0. 01 0. 01 0. 03 0. 0036 0. 0036 0. 00566 0. 00275 0. 003 amt of C6H5MgI, mol 0. 03 0. 03 0. 095 0. 0 108 0. 013 0. 0163 0. 007 0. 01 yield of biphenyl, % 98 98 100 99 97. 5 98 53 28 Taken from: J. Am. Chem. Soc. 1939, 61, 957. in 1943 during the classic studies of Kharasch on the chemistry of Grignard reagents in the presence of transition-metal halides. 6b Kharasch and Fuchs found that arylmagnesium bromides in diethyl ether reacted readily with vinylic halides of type RCHdCHX and R2CdCHX (but not CH2dC(R)X) to give styrenes in 50-75% yield when the reactions were carried out in the presence of 5 mol % of CoCl2 (eq 4). 18It was reported that other metal halides (of iron, nickel, and chromium) also were effective catalysts of this cross-coupling reaction. Benzylmagnesium chloride also reacted in this manner with vinyl bromide to give PhCH2CHdCH2 in 75% yield.Alkylmagnesium halides such as cyclohexyl- and n-butylmagnesium bromide, on the other hand, gave only â€Å"small to negligible† yields of the expected coupling product. The ArMgBrderived biaryl usually was obtained as a byproduct in these reactions. Such homocoupling of arylmagnesium halides in the presence of a transition metal halide as well as copper and silver halides was a known reaction. It had been investigated in 1939 by Gilman and Lichtenwalter, who found that aryl Grignard reagents undergo homocoupling in the presence of ca. 0 mol % of various transition-metal halides in diethyl ether solution to give the respective biaryl in high yield in most cases (eq 5, Table 2). 19 The metal halide, in addition to being the needed catalyst precursor, also served as an oxidizing agent and, in some cases (CoBr2, NiCl2, RhCl3), formation of a black solid indicated complete reduction to the metal. not occur in the absence of the organic halide but in its presence was vigorously exothermic. The added organic halide was only partially consumed and did not show up in the biaryl product.When p-bromotoluene was added to a phenylmagnesium bromide/CoCl2 catalyst reaction mixture, only biphenyl was formed. A re markable reaction! smost likely a free radical process, as Kharasch suggested. The organic halide was believed to function as an oxidizing agent. This interesting, simple, and potentially useful cross-coupling reaction, as exempli? ed in eq 4, was not adopted by the synthetic organic community right away. After a long dormancy it was rediscovered some 30 years later by a number of groups in the USA, Japan, and France, all of whom apparently were not aware of the 1943 Kharasch/Fuchs JACS paper. 1 Transition-metal catalysts other than CoCl2 were used, but the concept and the basic reaction were the same. In 1971 Tamura and Kochi reported a thorough study of the cross-coupling of Grignard reagents with vinylic halides catalyzed by soluble iron species in concentrations of ca. 10-4 M in THF at 0-25  °C. 26,27 Various Fe(III) compounds could be used as Fe catalyst precursors; the best were Fe(III) -diketonates such as Fe(RC(O)CHC(O)R)3 (R ) Ph, CH3, t-Bu). These exothermic reactions we re not free radical processes. The reactions of cis- and trans-propenyl bromide proceeded with retention of geometric con? uration (eqs 6 and 7) and were not adversely affected by the presence of 0. 4 M styrene. A ArMgBr + RCHdCHX 9 ArCHdCHR + MgBrX 8 (X ) Cl, Br) CoCl2 5 mol % (4) 2ArMgX + MXn f Ar-Ar + MgX2 + MXn-2 (5) A novel catalytic process for such ArMgX to Ar-Ar coupling was discovered by Kharasch and Fields when ethereal solutions of an aryl Grignard reagent that contained a catalytic amount (3 mol %) of CoCl2 were heated at re? ux for 1 h and then treated with an equivalent amount of an organic halide (C6H5Br, C2H5Br, i-C3H7Cl). 20 The coupling reaction to give Ar-Ar did (15) (a) Bott, L.L. Hydrocarbon Process. Petrol. Re? ner 1965, 44, 115. (b) Guccione, E. Chem. Eng. 1965, (June 21), 102. See also Part 2 of the tetraethyllead essay: (c) Seyferth, D. Organometallics 2003, 22, 5154 (pages 5172-5174). (16) (a) Krause, E. ; von Grosse, A. Die Chemie der metall-organischen Ve rbindungen; Gebruder Borntrager: Berlin, 1937; pp 14-61, 110-114. ? ? (b) Kharasch, M. S. ; Reinmuth, O. Grignard Reactions of Nonmetallic Substances; Prentice Hall: New York, 1954. (c) Handbook of Grignard Reagents; Silverman, G. S. , Rakita, P. E. , Eds. ; Dekker: New York, 1996. d) Grignard Reagents-New DeVelopments; Richey, H. G. , Ed. ; Wiley: Chichester, New York, 2000. (e) The Chemistry of Organomagnesium Compounds; Rappaport, Z. , Marek, L. , Eds. ; Wiley-VCH: Weinheim, Germany, 2008. (17) Knochel, P. ; Dohle, W. ; Gommermann, N. ; Kneisel, F. F. ; Kopp, F. ; Korn, T. ; Sapountzis, J. ; Vu, V. A. Angew. Chem. , Int. Ed. 2003, 42, 4302 (review). (18) Kharasch, M. S. ; Fuchs, C. F. J. Am. Chem. Soc. 1943, 65, 504. (19) Gilman, H. ; Lichtenwalter, M. J. Am. Chem. Soc. 1939, 61, 957. and earlier (back to 1914) references cited therein. 20) Kharasch, M. S. ; Fields, E. K. J. Am. Chem. Soc. 1941, 63, 2316. mechanism involving an organoiron(I) intermediate, obtained by reduction of the Fe(III) precursor by the Grignard reagent, was suggested. The results of a few experiments carried out on a 30-40 mmol scale (Table 3) showed that such iron-catalyzed reactions would be useful in the synthesis of ole? ns, but a broader study to optimize them and to broaden the scope of their application was not undertaken. The coupling of vinylic Grignard reagents with alkyl halides is catalyzed also by Ag(I) salts. 8 Thus, cis-propenylmagnesium (21) Two later â€Å"historical notes†22,23 and two book chapters24,25 that dealt with the cross-coupling reactions of Grignard reagents with vinylic halides also did not cite the Kharasch/Fuchs paper. (22) Tamao, K. J. Organomet. Chem. 2002, 653, 27. (23) Murahashi, S. -I. J. Organomet. Chem. 2002, 653, 27. (24) Kochi, J. K. Organometallic Mechanisms and Catalysis; Academic Press: New York, 1978; Chapter 14, Sections III and IV. (25) Hou, S. ; Negishi, E. -i. In Handbook of Organopalladium Chemistry; Negishi, E. -i. , Ed. , Wile y: New York, 2002; Vol. 1,Chapter III. 2. 6, pp 335408.As a historical note, the following quotation from this reference (p 335) is of interest: â€Å"Although the reaction of Grignard reagents with organic halides was shown to be catalyzed by various late transition metal compounds (the Kharasch reaction) in the 1950s, it was not until the early 1970s that the applicability of this catalytic method was extended to the cross-coupling involving alkenyl and aryl halides catalyzed by Ag, Fe and other late transition metals. † (26) (a) Kochi, J. ; Tamura, M. J. Am. Chem. Soc. 1971, 93, 1487. (b) Tamura, M. ; Kochi, J. Synthesis, 1971, 303. (27) Full papers: (a) Neumann, S.M. ; Kochi, J. K. J. Org. Chem. 1975, 40, 599. (b) Smith, R. S. ; Kochi, J. K. J. Org. Chem. 1976, 41, 502. (c) Reviews: ref 24. (d) Kochi, J. K. J. Organomet. Chem. 2002, 653, 11 (historical note). (28) (a) Whitesides, G. M. ; Casey, C. P. J. Am. Chem. Soc. 1966, 88, 4541. (b) Tamura, M. ; Kochi, J. J. Am. Chem . Soc. 1971, 93, 1483. 1602 Organometallics, Vol. 28, No. 6, 2009 Table 3. Alkenylation of Grignard Reagents using FeCl3 as Precatalyst (in THF)a R MgBr (amt, mmol) n-C6H13MgBr (40) CH2dCH(CH2)4MgBr (36) n-C6H13MgBr (40) a 1 R2Br (amt, mmol) CH2dCHBr (204) CH2dCHBr (102) CH3CHdCHBr (355)FeCl3 (amt, mmol) 0. 05 0. 05 0. 10 reacn temp,  °C 0 25 25 product (yield, %) n-C6H13CHdCH2 (83) CH2dCH(CH2)4CHdCH2 (64) n-C6H13CHdCHCH3 (67) (53/47 cis/trans mixture) Taken from: Synthesis 1971, 6, 303. Scheme 2 bromide reacted with methyl bromide in THF in the presence of an Ag(I) catalyst to give cis-butene-2, but a similar reaction of trans-propenylmagnesium bromide gave a 7:3 mixture of cisand trans-butene-2, respectively. 28b Apparently propenyl radicals were involved. A similar Grignard reagent based cross-coupling, ole? n synthesis in which a copper(I) catalyst was used was published by French workers. 9 Normant et al. reported that their reactions (e. g. , n-Bu(Et)CdCHI + i-PrMgCl in THF at -20  °C with a Cu(I) catalyst) proceeded with retention of con? guration. 29a For a reaction of CH3CHdC(CH3)MgCl with n-C3H7I in THF at 0  °C using CuI as catalyst, Linstrumelle reported that the coupling product obtained in 97% yield was 88% cis and 12% trans, while a similar reaction of CH2dC(CH3)MgBr with trans-n-C6H13CHdCHI gave a 4:1 trans/cis product. 29b TheuseofNi(II)catalystprecursorsforGrignardreagent-vinylic halide cross-coupling was reported in 1972 by Corriu and Masse30 and by Tamao, Sumitani, and Kumada. 1 The French group found Ni(II) acetylacetonate to be the most effective catalyst precursor, while the Japanese group favored a bis(tertiary phosphine)NiCl2 catalyst precursor and, especially, chelating diphosphine complexes such as (Ph2PCH2CH2PPh2)NiCl2. Reactions carried out in diethyl ether at re? ux generally gave excellent yields. This procedure has been carried out commercially on an industrial scale in the preparation of p-chloroand p-tert-butylstyrene. 3 2 Finally, the last to be discovered at that time and the most versatile procedure for the cross-coupling of Grignard reagents (29) (a) Normant, J. F. Commercon, A. ; Cahiez, G. ; Villieras, J. Compt. ? rend. Hebd. Seances Acad. Sci. , Ser. C 1974, 278, 967. (b) Derguini? Boumechal, F. ; Linstrumelle, G. Tetrahedron Lett. 1976, 3225. (30) Corriu, R. J. P. ; Masse, J. P. J. Chem. Soc. , Chem. Commun. 1972, 144. (31) (a) Tamao, K. ; Sumitani, K. ; Kumada, M. J. Am. Chem. Soc. 1972, 94, 1375. (b) See also ref 22. Later work: (c) Tamao, K. ; Kiso, Y. ; Sumitani, K. ; Kumada, M. J. Am. Chem. Soc. 1972, 94, 9268. (d) Kiso, Y. ; Tamao, K. ; Kumada, M. J. Organomet. Chem. 1973, 50, C12. (e) Kiso, Y. ; Tamao, K. ; Miyake, N. ; Yamamoto, K. ; Kumada, M. Tetrahedron Lett. 974, (No. 1), 3. (f) Tamao, K. ; Sumitani, K. ; Kiso, Y. ; Zembayashi, M. ; Fujioka, A. ; Kodama, S. ; Nakajima, I. ; Minato, A. ; Kumada, M. Bull. Chem. Soc. Jpn. 1976, 49, 1958. (g) Tamao, K. ; Kodama, S. ; Nakajima, I. ; K umada, M. ; Minato, A. ; Suzuki, K. Tetrahedron 1982, 38, 3347. (32) Banno, T. ; Hayakawa; Umeno, M. J. Organomet. Chem. 2002, 653, 288. (33) (a) Yamamura, M. ; Moritani, I. ; Murahashi, S. -I. J. Organomet. Chem. 1975, 91, C39. Full paper: (b) Murahashi, S. -I. ; Yamamura, M. ; Yanagisawa, K. -i. ; Mita, N. ; Kondo, K. J. Org. Chem. 1979, 44, 2408. (c) Historical note: ref 23. ith vinylic and aryl halides, that catalyzed by palladium complexes, was reported by Shun-Ichi Murahashi and coworkers in 1975. 33a The reactions were carried out in diethyl ether/benzene at room temperature using (Ph3P)4Pd as the catalyst precursor, and they proceeded stereospeci? cally in excellent yield (Scheme 2). Dang and Linstrumelle also used this procedure to prepare 1,3-dienes stereospeci? cally by the reaction of vinylic iodides with vinylic Grignard reagents. 34 Palladium-catalyzed cross-coupling of Grignard reagents with organic halides has been a very active area in organic synthesis.Reference 25 reviews (up to 2002) its application in (alkenyl) MgX-ArX, ArMgX-(alkenyl)X, and (alkenyl)MgX-(alkenyl)X coupling processes. A further chapter in this book deals with ArMgX-Ar? X coupling. 35 Another surge of research activity on cross-coupling of Grignard reagents with organic halides started around the turn of the century and still appears to be in progress at the present time (January 2009). Interest has revived in the use of iron complexes as precatalysts for the cross- and homocoupling of Grignard reagents,36 since iron complexes are cheaper than those of palladium and are nontoxic.The iron-catalyzed cross-coupling of organomagnesium bromides with vinylic bromides, although it produced ole? ns in good yield, was of interest to Jay Kochi, as noted above, primarily from the point of view of its reaction mechanism rather than of its potential for application in organic synthesis. After some 25 years several research groups carried out much experimental work which has shown iron-c atalyzed cross-coupling and homocoupling of Grignard reagents to be broadly applicable and very useful additions to the methods of organic synthesis.In 1995 Gerard Cahiez, at the Universite Pierre et Marie Curie ? ? in Paris, during the course of his extensive investigations of organomanganese chemistry, found that the cross-coupling of vinylic bromides with alkyl, vinylic, and phenylmanganese chlorides could be effected in good yield in the presence of 3 mol % of iron(III) acetylacetonate in a THF/N-methyl-2pyrrolidinone (NMP) mixed solvent at room temperature. 37 In a thorough study, this reaction was extended to the crosscoupling of vinylic halides with alkylmagnesium halides using 1 mol % of Fe(acac)3 and the same solvent mixture. 8 High yields of ole? nic products were obtained. Successful crosscoupling of Grignard reagents with AcO(CH2)6CHdCHCl, CH3C(O)(CH2)3CHdCHCl, Cl(CH2)4CBrdCH2, 9, and 10 are noteworthy as examples of the selectivity and functional group tolerance of this reaction. The scope of this chemistry was extended further when some of Knochel’s functionally substituted aryl Grignard reagents17 (vide supra) were reacted with vinylic bromides and iodides. 39 The cross-coupling reaction between aryl Grignard reagents and vinylic bromides and iodides also was found by Cahiez and co-workers to give ole? ic products in good yield with Organometallics, Vol. 28, No. 6, 2009 1603 Table 4. Iron-Catalyzed Biaryl Coupling Reactions a Table 5. Iron-Catalyzed Homocoupling of Grignard Reagents with Atmospheric Oxygen as Oxidanta a Taken from: J. Am. Chem. Soc. 2007, 129, 13788. palladium or nickel precatalysts. 42 Of these procedures, that of Cahiez et al. 41f appears to be the most useful. Alkyl halide/ alkylmagnesium halide cross-coupling is not a practical process. 43 RMgX + R? X 9 R-R? + MgX2 8 [Fe] (8)Iron-catalyzed reactions of aryl Grignard reagents with aryl halides to give biaryls generally are not synthetically useful. The desired cross-co upling products are obtained in only poor yield, the main product being the homocoupled biaryl derived from the aryl Grignard reagent (eq 9) (recall the Gilman/ Lichtenwalter and Kharasch/Fields reactions, vide supra). ArMgX + Ar? X f Ar-Ar? + (low yield) (major Ar-Ar product) (9) a Taken from: J. Am. Chem. Soc. 2007, 129, 9844. retention of geometric con? guration when carried out in THF solution in the presence of 10 mol % of MnCl2. 0 As noted above, Kharasch and Fuchs had found that attempts to cross-couple aryl Grignard reagents with alkyl halides in the presence of catalytic amounts of CoCl2 were unsuccessful. On the other hand, such reactions do occur in the presence of an iron precatalyst and various additives (eq 8, R? ) alkyl), as summarized in ref 36. A number of other groups have reported the results of their research directed toward development of an effective procedure for the process shown in eq 8, all using an iron precatalyst of one kind or another, various additives such as TMEDA, NMP, etc. nd generally diethyl ether (but sometimes THF) as solvent. 41 It is noteworthy that primary and secondary alkyl halides, i. e. , ones that contain hydrogen substituents on the carbon atom, can be cross-coupled with aryl Grignard reagents, a process that cannot be realized using (34) Dang, H. P. ; Linstrumelle, G. Tetrahedron Lett. 1978, 191. (35) Anastasia, L. ; Negishi, E. -i. Chapter II. 2. 5, pp 311-344, in ref 25. (To date palladium and nickel catalysts have been widely used to effect aryl-aryl cross-coupling reactions. However, arylmagnesium halides were found to undergo cross-coupling with aryl halides that contain electron-withdrawing activating substituents ortho or para with respect to the halogen substituent in the presence of 10 mol % of manganese(II) chloride (eq 10). 44 Cyclohexyl and 2-methylpropenyl Grignard reagents reacted with such substituted halobenzenes in a similar manner. Very (36) (a) Cahiez, G. ; Duplais, C. â€Å"Iron-Catalyzed Re actions of Grignard Reagents†, Chapter 13, pp 594-630 in ref 16e. (b) Furstner, A. ; Leitner, ? A. ; Mendez, M. ; Kraus, H. J. Am.Chem. Soc. 2002, 124, 13856 (a long ? paper that brings an excellent discussion of the literature, of questions concerning mechanism, and original results). (c) Sherry, B. D. ; Furstner, ? A. Acc. Chem. Res. 2008, 41, 1500. (37) Cahiez, G. ; Marquis, S. Tetrahedron Lett. 1996, 37, 1773. (38) Cahiez, G. ; Avedissian, H. Synthesis 1998, 1199. (39) Dohle, W. ; Kopp, F. ; Cahiez, G. ; Knochel, P. Synlett 2001, 1901. 1604 Organometallics, Vol. 28, No. 6, 2009 Table 6. Manganese-Catalyzed Homocoupling of Grignard Reagents with Atmospheric Oxygen as Oxidanta Scheme 4THF to a mixture of 3 mol % of FeF3  · 3H2O and 9 mol % of an N-heterocyclic carbene (SIPr  · HCl). In one example, chlorobenzene (1. 0 equiv) and p-CH3C6H4MgBr (1. 2 equiv) were added to this catalyst system and the reaction mixture was stirred at 60  °C for 1 day. The desired product, p -CH3C6H4-C6H5, was obtained in 98% yield. The homocoupling product, biphenyl, was present only in trace amount, while CH3C6H4C6H4CH3 was formed in 3% yield. Some examples of the application of this remarkable reaction are shown in Table 4. Good results were obtained only with aryl chlorides.Aryl bromides and iodides gave low biaryl yields. A German group reported similar MnCl2-catalyzed cross-coupling between various heterocyclic chlorides and aryl as well as alkyl Grignard reagents: e. g. , eq 11. 46 a Taken from: J. Am. Chem. Soc. 2007, 129, 13788. The homocoupling reaction of aryl Grignard reagents, mentioned earlier, also has received renewed attention recently, and synthetically useful procedures have resulted. Nagano and Hayashi developed a procedure in which the reaction is carried out in re? uxing diethyl ether in the presence of 1-5 mol % of FeCl3, NMP and 1. molar equiv of 1,2-dichloroethane (which serves as the oxidant). 47 Cahiez and co-workers have improved this procedu re by using THF as solvent, in which arylmagnesium halides, including the chlorides, are more easily prepared. 48 This procedure works well with Knochel’s functional arylmagnesium halides (Scheme 3). Of interest also is the clever construction of the tricyclic system 11 by intramolecular homocoupling (Scheme 4). (40) (a) Cahiez, G. ; Gager, O. ; Lecomte, F. Org. Lett. 2008, 10, 5255. (b) Alami, M. ; Ramiandrasoa, P. ; Cahiez, G. Synlett 1998, 325. 41) A selection: (a) Martin, R. ; Furstner, A. Angew. Chem. , Int. Ed. ? 2004, 43, 3955 (see also ref 36b and references cited therein). (b) Nagano, T. ; Hayashi, T. Org. Lett. 2004, 6, 1297. (c) Bedford, R. B. ; Bruce, D. W. ; Frost, R. M. ; Goodby, J. W. ; Hird, M. Chem. Commun. 2004, 2822. (d) Nakamura, N. ; Matsuo, K. ; Ito, S. ; Nakamura, E. J. Am. Chem. Soc. 2004, 126, 3686. (e) Bedford, R. B. ; Bruce, D. W. ; Frost, R. M. ; Hird, M. Chem. Commun. 2005, 4161. (f) Cahiez, G. ; Habiak, V. ; Duplais, C. ; Moyeux, A. Angew. Chem. , Int. Ed. 2007, 46, 4364. g) Cahiez, G. ; Duplais, C. ; Moyeux, A. Org. Lett. 2007, 9, 3253. (h) Guerinot, A. ; Reymond, S. ; Cossy, J. Angew. ? Chem. , Int. Ed. 2007, 46, 6521. (42) However, Terao and Kambe have recently developed new Pd- and Ni-based precatalyst systems which avoid the problem of -elimination of primary and secondary alkyl groups: Terao, J. ; Kambe, M. Acc. Chem. Res. 2008, 41, 1545. (43) (a) Tamura, M. ; Kochi, J. J. Organomet. Chem. 1971, 31, 289. (b) Rollick, K. L. ; Nugent, W. A. ; Kochi, J. K. J. Organomet. Chem. 1982, 225, 279. (44) Cahiez, G. ; Lepifre, F. Ramiandrasoa, P. Synthesis 1999, 2138. (45) Hatakeyama, T. ; Nakamura, M. J. Am. Chem. Soc. 2007, 129, 9844. (46) Rueping, M. ; Ieawsuwan, W. Synlett 2007, 247. (47) Nagano, T. ; Hiyama, T. Org. Lett. 2005, 7, 491. (48) Cahiez, G. ; Chaboche, C. ; Mahuteau-Betzer, F. Org. Lett. 2005, 7, 1943. Scheme 3 special, but generally applicable, reaction conditions developed by Japanese workers45 have ? nally prov ided the possibility of clean aryl-aryl cross-coupling reactions in which competitive homocoupling of the aryl Grignard reagent has been almost completely suppressed.In this procedure an active catalyst system was prepared by addition of 18 mol % of C2H5MgBr in Organometallics, Vol. 28, No. 6, 2009 1605 A further improvement resulted when it was found that atmospheric oxygen could replace the 1,2-dihaloethane as oxidant in the homocoupling of aryl, vinylic, and alkynyl Grignard reagents using either Fe or Mn catalyst precursors. 49 As Tables 5 and 6 show, this procedure gave excellent results. The most recent contribution to iron-catalyzed cross-coupling, which appeared during the preparation of the ? al draft of this paper, involves application of the old one-pot Barbier procedure in which FeCl3 served as precatalyst and stoichiometric amounts of magnesium turnings and TMEDA additive were used. A mixture of an alkyl and an aryl bromide was added to the mixture of precatalyst, TMEDA , magnesium, and solvent at 0  °C. Good yields of cross-coupled products were obtained. 50 There has been a great deal of activity in the areas of Grignard reagent/organic halide cross-coupling and aryl Grignard reagent homocoupling, and the coverage in this essay, whose focus is on the historical aspects, is far from exhaustive.Attention is called to the 2005 review by Frisch and Beller51 and especially (49) Cahiez, G. ; Moyeux, A. ; Buendia, J. ; Duplais, C. J. Am. Chem. Soc. 2007, 129, 13789. (50) Czaplik, W. M. ; Mayer, M. ; von Wangelin, A. J. Angew. Chem. , Int. Ed. 2009, 48, 607. (51) Frisch, A. C. ; Beller, M. Angew. Chem. , Int. Ed. 2005, 44, 674. to the recent Accounts of Chemical Research special issue on cross-coupling. 52 Since ? st reported in 1943, the cross-coupling of Grignard reagents with organic halides, thanks to further development by many later workers, has become a broadly applicable, very useful reaction in organic synthesis. There is much more about Grign ard reagents that I have not covered: the various procedures used in their preparation, the mechanism of their formation (which is still controversial), the more complex organomagnesium compounds such as bis(cyclopentadienyl)magnesium, magnesium butadiene, and magnesium anthracene, and the many kinds of reactions that Grignard reagents have been reported to undergo.But this is only a short essay, and so I have been able to cover only a few selected topics, ones which I hope will be of interest to the reader. More information can be found in the books that I have cited earlier. 16 Acknowledgment. My thanks, as always, to Professor Arnold L. Rheingold for the cover ? gure. OM900088Z (52) Acc. Chem. Res. 2008, 41, No. 11, 1439-1564, special issue. A collection of 11 reviews, many of them relevant to the subject matter of the present essay, with useful, up-to-date references.

Wednesday, October 23, 2019

Causes of Road Accidents in Malaysia Essay

The Causes Of Road Accidents In Malaysia Time to time, half a million of Malaysians died because of road accidents and the highest cases of road accidents are caused by the drivers’ behaviour, equipment failure and the road conditions and infrastructure. Because of the road accidents many people have lose their family member or close friend. Besides, the road accidents also may effected to government when they have to repair for the broken infrastructure that caused by the accident like lamp stand, road divider, cleaning people blood from the road, and many more.It also will give a traffic jam for a while to all drivers. According to Road Transport department research (2002)Accident casualty and deaths by vehicles for Malaysia 2000-2006, the number of road accidents increased to 400 cases and it decreased in 2006 that was only about 600 cases (21,600 cases) had been reported. The first thing that contributes to the reason for the road accidents that happen in Malaysia is the d rivers’ behaviour. Humans are always do mistake and not careful. When a problem or unwanted thing happens, they tend to blame somebody or something else for what they have done.Most people that get an accident believe the other party involved could have done something different to avoid the accident. According to The Royal Malaysian Police, PDRM (2006) report saying that 90% of accidents happen from this reason. Moreover they also mentioned that speeding also has caused quite a number of accidents. Actually, until recently many drivers, especially male driver took the chance of night time in driving in federation and state roads. PDRM, (2006) reported the faster speed of a vehicle, the greater the risk of an accident.Speeding, even if the vehicle going five miles per hour over, in the wrong place at the wrong time, it can bring death to somebody. Speeding is also based on the traffic on an area, road conditions, weather and lighting. When driver speeding, they had to risk the ir lives when had to alert about what condition will they face. Despite all major highways have speed trap, it still cannot prevent drivers to speed and get into trouble, such an accident. In addition, careless driver are another drivers’ behaviour that caused the road accidents.This factor is the highest factors that drivers get involved in road accidents. Some drivers not only speeding but also drive recklessly, breaking road rules, does not have their vehicle license and beating traffic lights. Moreover, drivers either man or women cannot prevent to be careless driver. The main cause that driver become un careful while driving on roads are talking on a cell phone, eating, falling asleep, tiredness, driving under the influence of alcohol and so on. Because of the small mistake can caused a big problem to others who using the road o involved in the accidents.However, the most important cause of an accident is aggressive driver behaviour and selfish attitudes. From e-how, des cribed, safe standards are manufactured for modern cars by engineer to minimize the effect of accident. The aggressive driver behaviour and selfish attitudes are the most impossible thing to change. The examples of aggressive driver behaviour and selfish attitudes are aggressive tailgating, failure to signal, and failure to use the right way side. Aggressive tailgating happen when you follow in front of other vehicle too close.With two vehicle drive too close in high speed, there will be a huge accident if unexpected thing happen on the road, such as animal crossing the road and required front vehicle stop immediately or evade from being crush into the animal. Furthermore, failure to signal when taking left or right road at the corner of the road. When this happen, other vehicle does not know which way you want to go either left or right. Especially heavy vehicles, they do not see where you want to turn if you does not turn on the signal light from your vehicle.There also a lot of p roblem happen if driver do not use the right way side, it will make other driver mad. When they angry, they will flash light at the back of your vehicle, because of you drive to slow also in wrong way side of the road. Other example is every festive season, like Chinese New Year, Hari Raya Aidilftri ,Deepavali, Christmas including New Years, Malaysians especially, always excited of going back to their village or better known as ‘balik kampung’. With the excited feeling of going back to their home towns, we can see many of them and their family trying their best to reach home quickly as they can.Thus they will become selfish and does not care about their safety. Some of them will take express bus to arrive at their home to avoid driving a car at night. But they will be unlucky if they get selfish and careless driver bus attitudes that always take the wrong side of the road which should not used by heavy vehicle just want to reach the destination early. The most the endan ger transportation is heavy vehicle like bus and lorry because they are big and easy to smash small vehicle.Other than that, many selfish motorcyclists who did not followed traffic rules and fastened safety helmets properly. Another factor that listed as one of the causes of road accident is equipment failure of a vehicle. From smartmotorist. com, it state that the most important types of equipment failure are loss of brkes, tire blow outs or tread separation, and suspension failure. Thus, with all exception of the recent rash of Firestone light-truck tire failures, calculated the totals that less than 5% of all motorvehicle accidents have reported equipment failure accounts.All drivers should drive with perfect car condition. So, before drive any vehicle, they have to do some conformation. They need to check their vehicle to make sure if it safe to drive or not. As example, they must check the condition of water, brake, battery and lamp always be in good condition. There are some d rivers that never take care of this problem. They feel it is a small matter to think about the problem and can do it later at any time. They do not care about the safety factor of their car.Such as they do not change the worn out tires, when it was worn out, the vehicle absolutely cannot grasp tightly the road surface perfectly. So, it will be more dangerous if in rainy day situation, it because the stranglehold between tires and road surface will be more weak than sunny day condition. There are so clear that worn out tires can caused the accident easily. Besides, there are many people cannot accept a fact that almost nine million vehicle in this country involved in road accident because the using of illegal equipment which gain the worst level.The amount of that vehicle is about 80 percent from the 11 million of the vehicle in our country. The president of Persatuan Pemilik kenderaan Bermotor Malaysia (MOVA), Ahmad Zaki Arifin said that more than half from the driver in our country face the risk to involved in accident and death about this behaviour. Although, the other reason that caused the accident is the road conditions and infrastructure. Usually, the road will become danger in rainy day. It will make the road become more slippery for the vehicle to handle.In addition, many potholes could endanger motorist (Road Transport Department, 2002). It because, deep hole can make motorist cannot control their vehicle and will cause the accident. It become worst if it involved with the motorcyclist. The un flat surface of road also can make a nightmare for road user. It because, the road user cannot see the hole while driving. Most accidents that involved pothole problem happen during night time, because at that time many driver could not recognize the hole when they driving.Other than that, insufficient and improper of street light, also caused the accident. Usually, The street lights are hard to find in village area. So, the authorities should take care the vill age area too. In some place, the street light cannot be used by people because the street light is already broken and not repaired by authorities. In other case, the insufficient of traffic light also lead us to road accident, interstate highways remain safest road because their flow of traffic is in one direction and complete with traffic light.Many case of accident caused by insufficient of traffic light such as there are no traffic light at one road that always full with vehicle and the effect is it will produce a huge traffic jam. It will become worst when some drivers do not think about other road user and drive in high speed when taking a corner or change to the other side of road. However, roadway identifications sign also play the role to make the road safe for road user. It useful to inform road user to locate and know the road condition, such as the location of landslide, school location, hospital and many more.If the driver was informed properly the accident will not happ en easily. It is possible that motorcyclist also need specific lane for them. They should be separate from other ‘big’ user like car, lorry, bus and other type of transport that bigger than motorcycle. It will make them more safe and secure from unwanted accident. In conclusion, driver behaviour and the equipment failure of a vehicle, as well as the road conditions and infrastructure seem to be causes of road accidents in Malaysia.To reduce the total amount of road accident, first thing that should we do are change our attitude. In addition, we also need to be alert about our vehicle condition and always check them. The rate of road accident in our country today has become a nightmare for all of us. So, the authorities may need to do a drastic step to overcome this worst problem. They need to use their power to serve the best road conditions and infrastructure for us. We need to realize that our live is most valuable thing. ‘Drive safety and safe our soul’.

Tuesday, October 22, 2019

7 More Fixes for Dangling Modifiers

7 More Fixes for Dangling Modifiers 7 More Fixes for Dangling Modifiers 7 More Fixes for Dangling Modifiers By Mark Nichol Some time ago, I pointed out the perils of dangling modifiers, presenting sample sentences and offering annotated revisions. Unfortunately, my stock of such specimens, discovered in the course of my editing work and in leisure reading alike, has grown rather than diminished. I therefore here inflict another set of them on you, one of as many rounds as are necessary to finally eradicate dangling modifiers from the face of the Earth. As a guest columnist for DailyWritingTips explained quite well in her post on the topic, â€Å"The dangling modifier is usually a phrase or an elliptical clause (a dependent clause in which some words have intentionally been left out), often at the beginning of a sentence, that either doesn’t modify anything specific in the sentence or modifies the wrong word or part of the sentence.† Here’s a dissection of sentences entangled by dangling modifiers: 1. â€Å"Drawn from a series of wildly popular cookbooks, international culinary celebrity, Australia-based Steve James, presents practical versions of the world’s greatest vegetarian cuisine.† The sentence implies that the celebrity in question is drawn from the cookbooks. Whenever you’re confronted with such a contextual contortion, start with the subject. While you’re at it, level the adjectival stack by relaxing the person’s description: â€Å"Steve James, an international culinary celebrity based in Australia, presents practical versions of the world’s greatest vegetarian cuisine drawn from a series of wildly popular cookbooks.† 2. â€Å"Once used to store ice, food, and alcohol, guests can still explore the mine and enjoy its cool temperature all year round.† Guests can consume ice, food, and alcohol, but they can’t store it. That’s the mine’s job, so recast the sentence to say as much by, as in the previous example, simply starting with the subject, followed by the reference to its earlier purpose: â€Å"The mine was once used to store ice, food, and alcohol, and guests can still explore the tunnels and enjoy their cool temperature all year round.† 3. â€Å"Originally founded as a purveyor of trinkets for Japanese festivals and carnivals, the company’s rise to prominence began in the early 1970s.† The use of a possessive form of a noun immediately after an introductory modifier is a screaming sign of a syntactical screw-up. The subject of the sentence is not â€Å"the company,† but â€Å"the company’s rise to prominence,† so it is the company’s rocket to stardom, not the company itself, that is incorrectly being identified as having been founded. Recast the sentence so that the company itself, not its ascendancy, is the subject: â€Å"The company, originally founded as a purveyor of trinkets for Japanese festivals and carnivals, rose to prominence beginning in the early 1970s.† 4. â€Å"As your mortgage loan originator, you will receive the benefit of my lending experience and ongoing education to help guide you throughout the entire loan process.† I’ve heard of self-service, but this is ridiculous. This sentence seems to be confused about the identity of my mortgage loan originator, who (in this case, anyway), inappropriately puts the customer first. The writer is offering their expertise, so the subject must be a first-person pronoun: â€Å"As your mortgage loan originator, I offer you the benefit of my lending experience and ongoing education to help guide you throughout the entire loan process.† 5. â€Å"While going to the bar one last time, my ‘Mike Johnson’ campaign sign accidentally falls out of my jacket pocket.† The writer’s â€Å"Mike Johnson† campaign sign has obviously gone to the bar too many times already if it can’t prevent itself from falling out of his jacket pocket. The writer must introduce themselves into the modifier to make it clear that they, not the sign, are frequenting the bar: â€Å"While I’m going to the bar one last time, my ‘Mike Johnson’ campaign sign accidentally falls out of my jacket pocket.† (Also, the quotation marks around the candidate’s name are optional, but because those words are presumably featured on the sign, the marks are appropriate.) 6. â€Å"Bordered by Libya, Sudan, Niger, Nigeria, Cameroon, and the Central African Republic, the CIA list for natural hazards includes ‘periodic droughts and locust plagues,’ which places Chad in a proper biblical context.† Chad, not the CIA list, is bordered by the other named nations, so why is it relegated to the end of the sentence? Introduce it, appropriately, in the introductory phrase: â€Å"The list of natural hazards for Chad, bordered by Cameroon, the Central African Republic, Libya, Niger, Nigeria, and Sudan, includes ‘periodic droughts and locust plagues,’ which places the nation in a proper biblical context.† (Notice, also, that I reordered the heretofore randomly listed names of countries alphabetically; for geographical entities, a sequence corresponding to relative location is also appropriate. Avoid arbitrarily ordered lists.) 7. â€Å"Since releasing their 2002 debut, the biggest criticism directed at the band has been that they couldn’t replicate their raucous live energy in the studio.† Is â€Å"the Biggest Criticism† the name of the band? No. The unnamed band released the debut, so the sentence must be heavily revised to shift â€Å"the band† to immediately follow the introductory modifier: â€Å"Since the release of their 2002 debut, the band has been the subject of criticism, primarily that it couldn’t replicate its raucous live energy in the studio.† (Also in American English, at least a band is a single entity and should be referred to by single pronouns.) Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Grammar category, check our popular posts, or choose a related post below:20 Types and Forms of HumorLatin Plural EndingsThe Difference Between "Shade" and "Shadow"

Monday, October 21, 2019

A Comparison of Freud and Fromm essays

A Comparison of Freud and Fromm essays Sigmund Freud was born in Monrovia on May 6,1856. He entered the University of Vienna in 1873 at the age of 17. He finished his degree in 1881. Freud died in England in 1939. He was an active therapist, theorist and writer to the very end. ( Ewen 19-20) Erich Fromm was born four years after Freud in 1900 in Frankfurt, Germany. Unlike Freud, Fromm had no medical training in his background. He received his PHD from the University of Heidelberg and later studied at Berlin Psychoanalytic Institute. Erich Fromm died March 16, 1980 in Switzerland. (Ewen 187) While Freud and Fromm were contemporaries and shared some basic beliefs, their approach to most issues varied greatly. Freuds attitude was purely scientific. Fromm desired to humanize things. Fromm accepted the importance of unconscious, biological drives, repression and defense mechanisms, but rejected Freuds theory of id, ego and superego. Fromm did not believe in specific developmental stages. He believed that the growing child slowly learns to distinguish between I and not I, through contact with the environment, notably those involving the parents.(Ewen 194) Fromm contends that personality development continues into adulthood. He believes that if a child keeps up with the increasing feelings of isolation, that anxiety can be kept to a minimal and personality development proceeds normally. Freuds well-known theory is that the personality is determined during the first five years of life. He believes we proceed through a series of psychosexual stages: oral, anal, urethral, phallic, a latency period and genital. Freud contends that the genital stage is the goal of normal development and that it represents true maturity. ( Hansen 25-26) Fromm warns against pathogenic behavior because it can damage the childs sense of reliance. He believed healthy pers...

Sunday, October 20, 2019

The Flag of the United States of Mexico

The Flag of the United States of Mexico There have been a few looks for the flag of Mexico since its independence from Spanish rule in 1821, but its overall look has remained the same: green, white and red and a coat of arms in the center that is a nod to the Aztec Empires capital of Tenochtitlan, formerly based in Mexico City in 1325. The flag colors are the same colors of the national liberation army in Mexico. Visual Description The Mexican flag is a rectangle with three vertical stripes: green, white and red from left to right. The stripes are of equal width. In the center of the flag is a design of an eagle, perched on a cactus, eating a snake. The cactus in on an island in a lake, and beneath is a garland of green leaves and a red, white and green ribbon. Without the coat of arms, the Mexican flag looks like the Italian flag, with the same colors in the same order, although the Mexican flag is longer and the colors are a darker shade. History of the Flag The national liberation army, known as the Army of the Three Guarantees, officially formed after the struggle for independence. Their flag was white, green and red with three yellow stars. The first flag of the new Mexican republic was modified from the armys flag. The first Mexican flag is very similar to the one used today, but the eagle is not shown with a snake, instead, it is wearing a crown. In 1823, the design was modified to include the snake, although the eagle was in a different pose, facing the other direction. It underwent minor changes in 1916 and 1934 before the current version was officially adopted in 1968. Flag of the Second Empire Since independence, only on one occasion has the Mexican flag undergone a drastic revision. In 1864, for three years, Mexico was ruled by Maximilian of Austria, a European nobleman imposed as the emperor of Mexico by France. He redesigned the flag. The colors stayed the same, but golden royal eagles were put in each corner, and the coat of arms was framed by two golden griffins and included the phrase Equidad en la Justicia, meaning   Equity in Justice.† When Maximilian was deposed and killed in 1867, the old flag was restored. Symbolism of the Colors When the flag was first adopted, the green symbolically stood for independence from Spain, the white for Catholicism and the red for unity. During the secular presidency of Benito Juarez, the meanings were changed to mean green for hope, white for unity and red for the spilled blood of fallen national heroes. These meanings are known by tradition, nowhere in Mexican law or in the documentation does it clearly state the official symbolism of the colors. Symbolism of the Coat of Arms The eagle, snake, and cactus refer back to an old Aztec legend. The Aztecs were a nomadic tribe in northern Mexico who followed a prophecy that they should make their home where they saw an eagle perched on a cactus while eating a snake. They wandered until they came to a lake, formerly Lake Texcoco, in central Mexico, where they saw the eagle and founded what would become the mighty city of Tenochtitln, now Mexico City. After the Spanish conquest of the Aztec Empire, Lake Texcoco was drained by the Spanish in an effort to control continuous lake flooding. Flag Protocol February 24 is Flag Day in Mexico, celebrating the day in 1821 when different rebel armies joined together to secure independence from Spain. When the national anthem is played, Mexicans must salute the flag by holding their right hand, palm down, over their heart. Like other national flags, it may be flown at half-staff in official mourning upon the death of someone important. Importance of the Flag Like people from other nations, Mexicans are very proud of their flag and like to show it off. Many private individuals or companies will fly them proudly. In 1999, President Ernesto Zedillo commissioned giant flags for several important historical sites. These banderas monumentales or â€Å"monumental banners† can be seen for miles and were so popular that several state and local governments made their own. In 2007, Paulina Rubio, famous Mexican singer, actress, TV hostess, and model, appeared in a magazine photo shoot wearing only a Mexican flag. It created quite the controversy, although she later said that she meant no offense and apologized if her actions were viewed as a sign of disrespect of the flag.

Saturday, October 19, 2019

Comparative politics 3 Essay Example | Topics and Well Written Essays - 1000 words

Comparative politics 3 - Essay Example The population comprises of a mix of people with European, African, and Native American roots, as well as other immigrants from Europe and Asia. Despite having a large resource base and a well-developed economy, Brazil has deep-seated social problems such as income inequality and poverty. This can be seen from the fact that, in Brazil, there is a dramatic variation in the living conditions of the Brazilian people. The nation is characterized by varying poverty incidence rates among the nonmetropolitan urban areas, metropolitan areas, and rural areas. There are also considerable income disparities among different regions. Income Inequality in Brazil Income inequality in Brazil has been very high for a long time. A large number of Brazilians live in poverty despite the fact that Brazil is not a poor nation. In fact, â€Å"Brazil has one of the most unequal income distributions in Latin America, a region with the highest income inequality in the world† (Almeida 2008, 7). A recent study conducted by the World Bank showed that over half of Brazilians live in very poor conditions. ... zilian people in families earning average incomes that were below the poverty line were approximately 51 million, which is about half of Brazil’s total population. However, it is important to note that there are many nations whose levels of per capita income are lower than that of Brazil. Causes of Income Inequality in Brazil Income inequality in Brazil can be attributed to a number of factors. These include: 1. Extreme land concentration among Brazil’s elites. This has led to unequal land distribution among people in Brazil, and is a major cause of inequality and poverty in the country. According to Almeida, â€Å"in Brazil, 1% of the population controls 45% of the farmland† (2008, 8). 2. Differences in incomes among different regions in Brazil. Brazil is the most unequal nation in Latin America in terms of income. â€Å"In income distribution, Brazil is among the 10 most unequal countries in the world. An estimated 95 percent of the world’s population l ives in countries where income is more equally shared than in Brazil† (Thomas 2006, 28).The differences in income among different regions has led to overall income disparity in Brazil, and consequently, to poverty. 3. Racial differences. Racial component as a cause of poverty in Brazil is affirmed by the Brazilian government. A significant part of the overall income inequality in the country can be attributed to income differences based on skin color. Afro-Brazilians, who are Brazilians with an African descent represent almost half of Brazil’s population, and constitute sixty four percent of the poor and sixty nine percent of the very (Almeida 2008). 4. Lack of access to quality education. Educational attainment in Brazil is very disproportionate. Brazil is not characterized by low public expenditure like other

Historical events that have shaped America Essay

Historical events that have shaped America - Essay Example When breaking down the essence of America in this way, it becomes possible for a few key events to float to the top of each category as being critical in the evolution of the United States. Of course, this determination is largely a matter of opinion. Nevertheless, a concrete case can be made for three major historical developments as the most essential factors shaping America. In the political realm, the Enlightenment is the first factor. In the economic realm, the Industrial Revolution is the second factor. And in the military realm, World War II is the third factor. Taken together, these three factors comprise a triad of events in whose absence the America we know today could never have possibly come into being. The Enlightenment was arguably the most important historical event influencing the United States governmental and political system. Not only did it spawn a philosophy of good government and a view of human rights that directly impacted the thinking of the Founding Fathers as they crafted the American system of government, but it also indirectly informed modern views of social justice that precipitated such developments as the Civil Rights movement, universal suffrage, and social security. The Enlightenment, while more of a European phenomenon than an American one, took place at just the right time, directly preceding the American Revolution and heavily influencing the thinking of the great men who would be instrumental in setting the initial course of America (http://www.wsu.edu/dee/AMERICA/ENLIGHT.HTM). The Enlightenment was the point in history when some of the most influential political philosophers of history wrote their seminal works. These include the writings of John Locke, Jean-Jacques Rousseau, Thomas Hobbes, and John Stuart Mill. Together, these great thinkers laid out the philosophical underpinnings of what would become the American government. Such concepts as separation of powers, the right to life, liberty and property, the importance of a strong central government, and the common good, all came into play as the Framers developed their formula of "good government" that is laid out within the U.S. Constitution. These "enlightened" thinkers, among others, brought about a fundamental shift in the way humans viewed their world and their natural place in it. The Enlightenment essentially set the philosophical parameters surrounding the way humans interact with one another and agree to govern one another. The Founding Fathers, most notably James Madison and Thomas Jefferson, injected a heavy dose of Enlightenment philosophy into the American governmental system, with its protection against the tyranny of the majority, its preservation of individual liberty and property rights, and its perpetuation of the sovereignty of the states in the face of a strong central government. As such, the Enlightenment provided the cornerstone of American government, and was perhaps the most critical world historical event shaping America. The Industrial Revolution Just as the Enlightenment was key to America's political development, the Industrial Revo

Friday, October 18, 2019

Challanges we face Essay Example | Topics and Well Written Essays - 500 words

Challanges we face - Essay Example Michelangelo’s transformation depicts the ideas and criticism that displays the negativity towards culture and religious authority. In fact, his personality and ego gives a better inside of a clash of values that are essential to him. Moreover, Michelanego’s personality is referred to an assimilation of eastern and western values that many modern icons go through in their lifetime period. A great deal of philosophy in essence even during the Renaissance era continued to emphasize the concept of fatalism. Dante is a prime example of that as his religious beliefs are put on a stern test as he visits his ultimate fate, which is hell. The traditional belief at that era was the fact that predestination is critical component that one must embrace. Dante’s legacy depicts that events and propositions that occur in the present will also occur in the future. Hence, events occurring in the future are unavoidable. The future is contingent and Dante’s Inferno is the key element that discusses the vital aspect of predestination. However as society progressed after the renaissance era where the black plague left an embarking mark, society began to experience this new revival of the enlightenment era. The enlightenment era undoubtedly was a different taste than the renaissance as science played a pivotal role in establishing the reasons for events that occur. Suddenly, philosophers modified their mindset to think critically instead of deriving their conclusions on fate, religion, and myths. Comparing to this to a recent event, another sort of enlightenment period was the civil rights movement in which Martin Luther King took him upon himself to challenge the traditional views of not only society but the ideologies of capitalism and white superiority. Another concept that has been altered the perspective of society was the fact that society tends to focus on

Applying Research assessment 2 Essay Example | Topics and Well Written Essays - 2000 words

Applying Research assessment 2 - Essay Example This report deals with the research methodology of an article named â€Å"Blowing The Whistle on Police Violence† written by Louise Westmarland which was published in British Journal on Criminology in 2001. â€Å"This article highlights a number of issues related to the witnessing of ‘illegal’ police violence by researchers† (Westmarland, 2001). The researcher focuses on a very sensitive issue i.e. the violence committed by police. The main purpose behind this research was to make the general population including the higher authority aware of the violence propagated by police so that a mass awareness can be developed against it. This article uses the ethnology study to reason out the factors for these types of violence. It unfolds many facts regarding the various degree of violence. This report will discuss the research methodology applied by the researcher and the extent to which this methodology is feasible for this subject. The validity of the outcome of this research will undergo various critical studies and suitable recommendation will be discussed and analysed. Westmarland in his article has identified the specific behaviour of police that lead to violence in society. This research can be termed as the outcome of the ethnographic research. The researcher has devoted a considerable amount of time to study the police violence through the ethnological study. Westmarland has himself been a first hand witness to various situations as a fieldworker and therefore have seen the situation more clearly. The fieldworkers are appointed to observe the real life violence committed by police. To analyse the qualitative aspects like human behaviours the ethnographic research plays a very significant role. â€Å"One primary difference between ethnography as science and other social and behaviour science methods of investigating is that ethnography assumes that we must first discover what people actually do and the reasons they give for doing it before

Thursday, October 17, 2019

Daewoo Shipbuilding and Marine Engineering Case Study

Daewoo Shipbuilding and Marine Engineering - Case Study Example (Upton and Kim 2009, p.1) Further, Daewoo faced stiff competition from other organizations offering the same services particularly the Japanese competitors. Lee Byungmo affirms that they had to benchmark Japanese competitors as they sought to learn their skills hence revealing that they faced a business problem in relation to competition. (Upton and Kim 2009, p.4) Moreover, Daewoo faced a business problem in relation to space for operation. Lee says that there was no more space left for the growing size of ships being built and they were therefore forced to move them to the sea for completion or additional operations (Upton and Kim 2009, p.4) In solving the 1987 problems mention earlier, Daewoo had to face and act upon new challenges including globalization, countering the fiercer Chinese competition, and dealing with impending modification in the governance structure. In countering the late 1990s crisis, Daewoo developed a sense of urgency which created union between the management and labor of the organization. They had to work persistently to overcome the problems and improve on operations, both infrastructural and structural, in terms of capital equipment. In countering the competition problem, Daewoo had to borrow and learn the skills and concepts of their business competitors. For instance, Lee Byungmo confirms in the case study that they had to benchmark Japanese competitors and apply their operation skill such as â€Å"just-in-time and lean production.† In countering the space problem mentioned earlier, Daewoo had to construct more dry docks and at times carry out the final operations of ship building in the sea. They also had to create special divisions for the different categories of ships such as heavy floating zone. This specialization helped improve utilization and the output rate of various

Midterm ONE Essay Example | Topics and Well Written Essays - 1000 words

Midterm ONE - Essay Example However, in 1609 there was some reorganization in the area and the London Company became the Virginia Company. This year also heralded the arrival of Lord De La Warr as the first governor, and the subsequent establishment of strong work ethics (Brinkley, 33). 1612 saw a man named John Rolfe begin to grow tobacco in Virginia, something which turned out to be very profitable for the area and began the expansion of the colony. Additionally, 1619 saw the area gain the first slaves from Africa, as well as the growth in population from women and children, which allowed the culture to begin to thrive. The Virginia colony was also important for providing a model for U.S. government which we still use today, with 1650 seeing the meetings of elected representatives splitting into two chambers as seen in congress today. The later part of the 17th century saw Bacon’s Rebellion, which was essentially a revolt against the governor of Virginia by Nathanial Bacon. The main reason for the upri sing was that the people of the Virginia colony were upset that the governor was ignoring pleas for a stronger military presence in the area (Brinkley, 35). Although seeing some minor success, Bacon died before progress was made with the revolution, but this did sow some seeds for a Revolution before the Revolution. ... South Carolina had strong links with the overpopulated Barbados, which had already begun to embrace slavery. The links with the Caribbean and the interest in the economics of slavery in this region are crucial to understanding the build-up to the Revolution. The colony in New England (Massachusetts) began to grow in the early 17th century with the arrival of pilgrims (who were separatists from the Anglican church) left Holland and boarded the Mayflower to settle in Virginia. However, the boat did not arrive in the Hudson River as planned but ended up in Cape Cod, where they landed outside the London Company’s territory. They found some land that had been cleared due to some Native Americans dying of disease and the local residents helped them to found their own colony. William Bradford was elected governor and sought legal permission to found the colony. More people began to arrive who did not agree with the religious tenets of the area but came because of fertile land (Brinkl ey, 45). In 1664 Charles II gave his brother James territory between Connecticut and the Delaware river, some of which had already been claimed by the Dutch (Brinkley, 28). One of the major settlements in the area was New Amsterdam, but this soon surrendered and became New York. There were tensions in the area between the Dutch who were considered â€Å"patrons† and the wealthy English settlers. Pennsylvania was founded because dissenting English religious group founded by George Fox wanted to find a place for religion and a distinctive social order. Quakers, back in England, had suffered persecution and looked to America to provide a tolerant new land to live in. Pennsylvania had good relations with the Native Americans and always paid

Wednesday, October 16, 2019

Daewoo Shipbuilding and Marine Engineering Case Study

Daewoo Shipbuilding and Marine Engineering - Case Study Example (Upton and Kim 2009, p.1) Further, Daewoo faced stiff competition from other organizations offering the same services particularly the Japanese competitors. Lee Byungmo affirms that they had to benchmark Japanese competitors as they sought to learn their skills hence revealing that they faced a business problem in relation to competition. (Upton and Kim 2009, p.4) Moreover, Daewoo faced a business problem in relation to space for operation. Lee says that there was no more space left for the growing size of ships being built and they were therefore forced to move them to the sea for completion or additional operations (Upton and Kim 2009, p.4) In solving the 1987 problems mention earlier, Daewoo had to face and act upon new challenges including globalization, countering the fiercer Chinese competition, and dealing with impending modification in the governance structure. In countering the late 1990s crisis, Daewoo developed a sense of urgency which created union between the management and labor of the organization. They had to work persistently to overcome the problems and improve on operations, both infrastructural and structural, in terms of capital equipment. In countering the competition problem, Daewoo had to borrow and learn the skills and concepts of their business competitors. For instance, Lee Byungmo confirms in the case study that they had to benchmark Japanese competitors and apply their operation skill such as â€Å"just-in-time and lean production.† In countering the space problem mentioned earlier, Daewoo had to construct more dry docks and at times carry out the final operations of ship building in the sea. They also had to create special divisions for the different categories of ships such as heavy floating zone. This specialization helped improve utilization and the output rate of various

Tuesday, October 15, 2019

Han Poems ( Chinese Poetry ) Research Paper Example | Topics and Well Written Essays - 1000 words

Han Poems ( Chinese Poetry ) - Research Paper Example It is worthwhile to note that the Han dynasty led to the development of different poetic forms. Thirdly, China has the modern period poetry that is characterized by westernized free poetry structure (Maghiel Van Crevel 405). The Han poetry also known as classical poetry was developed during the Han period. This is the period during which, the Chu lyrics advanced and evolved into the fu lyric. In this lyrical pattern, a poem is simply in rhymed verse except for the introduction and the concluding passages, which are in prose. More often, the introductory and concluding parts of the poem are in the systematic form of questions and answers. This form is often referred to as poetic essay. For instance, Xi Kang’s Qin Fu is a perfect of the poetic form in this context. The Han poetry was also characterized by the yue fu poems (newpages.com). The yue fu poems are simply song lyrics that were inclusive of indigenous folk songs as well as, versions of renowned artists such as Li Bai. T he literary history of Chinese history was dominated by the fu genre which is a descriptive prose combined with verse. The Han period is described as an important cultural flowering age of the Chinese poetry. ... , the emergence of the Han poetry, Confucius has the credit of revolutionizing the Han poetry due to his effort in educating pupils on poetry by use of the book of songs whose impact on Chinese literature led to the undisputed success of the Chinese poetry. Undisputedly, the vigor and realism of the Han art inclusive of poetry is notably among the most sophisticated periods in Chinese lengthy history. Most people fond of art are curious to find out the founder of the Han poetry who is none other than Liu Pang. Liu Pang (forum.kungfumagazine.com). In a comprehensive detail, the Han poetry was written during the period dating back to 206 B.C-A.D.220. The Han dynasty lasted during this period. The form of writing was simply the â€Å"yuefu† style. A later period of the Eastern Han was characterized by poems, which were in the form of five characters in each line. The repetitive use of five characters in each line stood out as the distinguishable attribute that achieved melodious smoother effect evoking subtler human feelings. The Han poetry was written in the form of the fu genre until the classical period when it began to develop into the modern known as Shi form. In contrast to the fu genre, the Shi form has seven characters in each line. The Han poetry entailed the use of an adopted persona to address a wide range of topics in the ancient Chinese society (Maghiel Van Crevel 344). Concisely, the Han poetry is a reflection of the territorial expansion of China hence the purpose for which it was written was to record the history of China. During the Han period, China experienced a drastic development in knowledge, which led to its tremendous expansion linking it to other countries such as Syria, Iran and India. The Han poetry gives a detailed account of the sorrow filled,

Monday, October 14, 2019

The tragedy of Antigone Essay Example for Free

The tragedy of Antigone Essay The tragedy of Antigone is the culmination of Sophocles’ line of troubles for the Oedipan line, beginning with the unmasking of the King’s tragic secret. The last tale of the doomed Theban family, however, was different from the other two stories; here, the main theme was not the unfolding of tragedy as willed by fate, but a defiant challenge to mortal pride. Antigone faced Creon to challenge the dishonorable sentence to her brother, and also to unmask the pride by which the Theban King defied the gods. Dante’s Divine Comedy follows a similar theme: driven by the despair of wrath and pride, the poet-pilgrim is led by the spirit of Virgil through the recesses of his soul to see first-hand the ugliness of sin and pride that moves his despair. Through analysis of the two stories, it will be revealed that they share similar devices in narrative, and a common theme: Mortal Pride blinds its owner, turns it against those he holds dear, and offends the Divine. The first recognizable similarity between the two stories lies in the role of the women in unmasking the folly of mortal pride. Antigone begins in the aftermath of a great battle and the decision of the Theban King, Creon, to disgrace the dead of the besieged and withhold the honor of proper burial. Antigone represented divine admonition and retribution, in her defiance of the law forbidding the burial (Watling, 1959, p. 125). The purpose was two-fold: one was to give redeem the lost honor of her brother, who was one of the doomed, and the other to dare the King to do his worst and in so doing, and thus expose the extent of his folly. The heroine of Dante’s Divine Comedy is Beatrice, who, seeing the despair and error that Dante found himself in, sent for the ancient writer Virgil to guide him through Inferno into the gates of Paradise (Ciardi, 1960, pp. 28-30). This journey through the bowels of Inferno represents the soul’s examination of self, revealing that at the center of the blackness of his despair was sin, and at the core of that was pride. Beatrice is fulfilling the same two-fold purpose that Antigone bore for herself: she wished to redeem Dante, by exposing the folly of his own pride. The devices of both stories are also similar in their approach to curbing mortal pride: initially there is the advice of Reason, and then the chastisement by the Divine. King Creon is approached by his son, Haemon, in the hopes in him seeing the error of his ways (Watling, 1959, pp. 143-147). His careful admonition of speaking for Creon’s benefit and that he could still admit to his mistake, is similar in Virgil’s firm but gentle handling of Dante, as the latter is led through the depths of Hell and the scourges of Purgatory. Mortal pride, in both stories, has blinded too much the protagonist; Creon would not heed to the warnings of his son, and would even trade barbs with the blind prophet Teiresias (Watling, 1959, p. 154). Similarly, throughout Dante’s journey through the nightmarish landscape of the Inferno, he could see tormented souls who are too blinded by their pride to realize the gravity of their sins and its consequences. One memorable scene is in Inferno’s Canto VII, where, in the dregs of a swamp, the souls who were wrathful in their lives continue to tear each apart even in Hell. There is also Vanni Fucci’s defiant cry to God in Canto XXV of Inferno, in the midst of his torment from vipers (Ciardi, 1960, pp. 75, 213). Even Dante himself, later in Purgatorio’s Canto XIII, admits of continuing lapse to pride, despite the horrors he had to face in Inferno (Ciardi, 1960, pp. 143-144). Mortal pride, however, eventually shrinks before the glare of Divine wrath, the second and more effective narrative device used to quelling the former. Teiresias, having been rebuffed in his gentle words of advice to Creon, reveals the extent of Heaven’s curse. His final barb at the King (â€Å"Let us leave him to vent his anger on younger ears/Or school his mind and tongue to a milder mood†) exposes Creon’s fury for what it is: nothing before the eyes of the Divine (Watling, 1959, pp. 154-155). Beatrice, in a similar office, released righteous fury upon a Dante that seemed to have gotten off easy in Hell and Purgatory—incidentally at the same time that Virgil finally leaves him. Dante, suddenly naked before Divine Wrath, swoons in grief and guilt (Ciardi, 1959, pp. 304-307, 310-313). Thus, the two stories share the same lesson: Pride that is defiant before the Law of the Divine eventually is humbled against Righteous Wrath. Thus is Antigone the same with the Divine Comedy. Through the device of Reason (Haemon in the former, Virgil in the latter), the Divine sought to redeem the soul caught in the despair of pride. The act of pride is exposed for its absurdity, and the sinner shrinks before the realization of the extent of his error. Pride, that it may be scourged from its wielder, is then met with the punishment of the Divine. Creon faced it in the multiple tragedies of son, mother and would-be daughter-in-law. Dante, though, could not yet suffer this burden as he was still alive (though Beatrice’s denunciations would have sufficed), but he could at least see it from the Proud preparing themselves in Purgatorio, as was illustrated in Canto X (Ciardi, 1960, p. 115-117). The sins of Mortal Pride are not thrust upon Man by fate, but it is taken up by choice. It is a grotesque thing that blinds its possessor and thus in turn possesses him. Only by seeing clearly how small, insignificant, and foolish it is and how it hurts those held dear, can it be overthrown and the soul thus redeemed.

Sunday, October 13, 2019

Iraq War Essay -- essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  The war waged on Iraq by the United States has been the cause of heated debate all over the world. Many people have opposed the United States attack on Iraq for many viable reasons. Some of these reasons include that it is not in the best interests for the reputation of the United States with the other nations of the global community, it poses an increased threat to United States homeland security, and it will result in many unjust crimes committed by the United States.   Ã‚  Ã‚  Ã‚  Ã‚  Going to war with Iraq will negatively affect the reputation of the United States with other countries opposing the war. These countries include Germany, France, Saudi Arabia, Jordan, Egypt, and Pakistan, to name a few. In order to be a superpower, it entails that the country maintain amicable ties with nations in strategic areas in order to facilitate goodwill and cooperation. By going to war with Iraq, the United States has put a tremendous strain on amicable ties it once had with influential countries like France, Germany, and Egypt which is not good for public relation purposes or for maintaining superpower status. Also, going to war with Iraq has put a tremendous strain on the ties between the United States and many Muslim countries. The vast majority of the Muslim world is vehemently opposed to the war, thereby fueling anger towards the United States, viewing it as unjust and overstepping its bounds. This creates a dark image of the United Sta...

Saturday, October 12, 2019

Master Harold vs No Exit Essay -- Literary Analysis, Sartre, Fugard

The setting of a play is extremely vital. It could a form of symbolism, foreshadowing, or it can affect the characters in the play. The is exactly the case in both No Exit by Jean-Paul Sartre and â€Å"Master Harold†Ã¢â‚¬ ¦and the boys by Athol Fugard. The setting in both plays contain of one room that mainly consists of three major characters. The setting has an enormous impact on the behavior of the characters. The time period in which both plays are form also effect the style of writing and the characters. No Exit has an existentialist style of writing were as â€Å"Master Harold†Ã¢â‚¬ ¦and the boys was written in the apartheid era of South Africa. Both books have similar settings, but also involve some dissimilarity. The stage directions and the dialogue of the characters tell the audience that the play is set in one room. The number of characters that are going to be represented in the play are seen in the first scene. In the beginning of No Exit the stage directions show the audience the room. â€Å"A drawing-room in Second Empire style† (Sartre 3). This tells the reader that the play is in a one room set. â€Å"Then we’re to stay by ourselves, the three of us† (Sartre 10). One of the characters, Inez, is stating the fact that only three people are to reside in the room. This will create some tension, because No Exit is based on hell. The whole idea of hell to everyone is that it comes with a demon figure that is suppose to torture everyone. â€Å"The racks and red-hot pincers and all the other paraphernalia?† (Sartre 4). This is the regular hell, but in Sartre’s point of view hell is something different. He believes that hell is other people. This is where t he setting comes into play. Sartre puts the three different personalities in the same room to turn th... ...e to the question is obvious. This reveals the idea of bias between characters. Sam and Willie now both want to injury Hally, while Hally has injured Sam. In this play, Sam and Willie are against Hally, and in No Exit by the end Garcin is trying to impress Inez and Estelle is left alone. The setting also has a major impact on the audience. The one room forces the audience to be more attentive to the entrance and exits of the characters. Since the audience is familiar with the set by the end of the first scene, they can focus more on the dialogues and the stage directions. The audience is more involved in a play when the set is not changed. The audience can then interpret the literary elements of the play. Also in the case of â€Å"Master Harold†Ã¢â‚¬ ¦and the boys, Fugard had to move the play around South African ghettoes. This made the transportation easy and efficient.

Friday, October 11, 2019

Reward Management

Since the Industrial Revolution the approach of HR changed from a pure financial approach to a core function within the business1. Human Resource could be considered nowadays as the most precious resource a company holds as it constitutes the link between the people and the company’s strategy and goals. HR fulfills this role through 4 main activities: staffing, reward management, employee development and employee maintenance.This paper will focus on reward management and the challenges the company faces in finding the best way to implement a reward management strategy that suits it. Different theories and practices exist; however the company has to consider the needs and desires of its own people and environmental context in order to find the system that best suits the company. Theories and approaches One way to illustrate the link between different HRM activities is the Fombrun, Tichy and Devanna model. According to this model, HRM has 4 key activities: Selection, Performance , development and Rewards.Even though this model is said to leaves out the notion of management’s strategic choice, it shows the coherence of internal HRM policies and the importance of matching internal HRM policies and practices to the organization’s external business strategy2. Source: John Bratton, Jeffrey Gold (2000), Human resource management: theory and practice, second edition 1 See appendix I – source : Jean Moisset, Pierre Toussaint, Jean Plante(2003), La gestion des ressources humaines pour la rà ©ussite scolaire, presse de l’università © du Quà ©bec 2 John Bratton, Jeffrey Gold (2000), Human resource management: theory and practice, Second edition Thereby, it can be said that reward management is very closely linked to employee retention, training and development and strategic HRM.And without a clever practice of these activities, a reward management cannot be successful. Reward management was born because managers had to motivate their emp loyees in order to reach company’s objectives. â€Å"A great deal of the ideology of work is directed at getting men to take work seriously when they know that it is a joke†3 . Motivating the staff became a concern as soon as a positive relation between motivation and high performance was demonstrated.Motivation is not only used to achieve a certain amount of output needed to align with company’s goals, but also put in the work of the employees an humane and selfsatisfying aspect. Throughout the last centuries, many studies have been made. Some studies focused on what people value as a decent reward, thereby â€Å"how to reward† (content theories) and others focused on the effect of a certain reward system, â€Å"why† implementing this system (process theories). Among content theorist Taylor can be mentioned. For him, people were rational and only driven by financial rewards.Then, the Hawthorne studies showed social needs were as important as econo mic needs. Abraham Maslow developed a pyramid expressing a hierarchy of needs: physiological>safety>belongingness>esteem>self-actualization. Each person stands at a certain level and will need specific motivators. Some other content theories are motivation factors of Herzberg or Mc Gregors’ theory. From the simple idea of economic motivator, theories have moved towards the idea of needs. Secondly, process theories of motivation explain why a reward system has to be implemented.A first theory, the organizational justice, gives that employees need to perceive the organization as fair. Either through the fairness of the rewards which are distributed (distributive justice) or through the procedures used to allocate rewards (procedural). The equity theory relies on the idea that individual assess fairness through the comparison with others who are in similar situations. Some also say that employees’ behavior depends on what they expect to occur. This is the expectancy theor y. Employees ask themselves three questions in order to decide how to behave: What’s in for me?How hard I have to work to get it? What are the real chances of getting the reward if I do what my boss wants? And finally, the goal- 3 Thompson, A. & Ryan, A. J. (2010) â€Å"Employee reward† in: Beardwell, J. & T. Claydon, Human resource management: A Contemporary Approach, Harlow: Prentice Hall, 6th edition, pp. 490-530. 3 setting theory stipulates employees want to work towards challenging, yet not impossible, goals. Process theories underline that behavior is affected by individual differences, experiences and features of the organization.Employees evaluate the rewards obtainable for behaving in a certain manner and act consequently. However, people do not always behave consciously and when they behave in a certain way, they may not be aware of the behavioral options. Practically, there are two steps in the development of a reward management strategy. First, there is eva luation of capacities, position and potentiality of the individual. Then, focus is set on the remuneration. This can be monetary or not. Employee’s surveys are used to develop HR policies and practices.Through those surveys, it has been found that â€Å"pay is only one of a number of factors that motivates staff, and may not always be the most important one†. 4 The monetary reward system is simply defined as the salary increase which can be calculated by different available systems (payment by result, performance related pay, financial participation) whereas the non-monetary type refers to the motivation and gratification of the employee. This is done through a psychological contract based on the concept of mutual understanding of obligations and promises made between worker and employer.There are two different types of psychological contracts: transactional, based on the monetary aspect and relational, rather based on people. This shows the importance of the environme nt in which people work. A good reward management system is able â€Å"to attract, maintain and motivate people to work for the company†5. 4 Armstrong M. , Thompson P. , Brown D. and Cotton C. (2006), Reward Management, Symposium Report, ereward and Chartered Institute of Personnel and Development, February 5 Henry L. Tosi and Massimo Pilati (2008),†People management† in Compertamento organizzativo, Egea†¢ basepay †¢ contingency pay (for performnace, competences or contribution) †¢ variable pay (cashbonus) †¢ share ownership †¢ benefits non finanlcial rewards financial reward †¢ arising form the wprk itself and environment †¢ recognition and responsability †¢ meaningfull work †¢ autonomy †¢ opportunity to use and develop skills †¢ carreer opportinities †¢ quality of working life †¢ work life balance †¢ COMPONENTS OF TOTAL REWARD Source: Michael Amstrong, Helen Murlis, Reward management: a handbo ok of remuneration strategy and practice, Hay Group, 5th editionThe main problem of reward management is that both the evaluation and remuneration process are dependent from market forces (comparisons, competition, unions, types of regime) and from internal management forces. The variation of the pay system can therefore cause a state of compression or dispersion of the employees which is translated in homogeneous or diversified payments within the company. These systems have both benefits and costs. As we have seen, reward management systems can be characterized by different approaches and theories.However, there is a trend towards transparency and homogenization and some key factors are repeated: balance between pay and benefits, work life balance, individual growth and development, and positive workplace. These can now be observed in some important companies such as Yorshire Water, Severen Trent Water and Das Legal Expases. Nevertheless, the theories and approaches are not always used in practice. This was due to a gap between evidence and practice, known as the â€Å"knowing-doing gap†. It has been shown that although theoretical reward strategies exist, business do not have enough time to implement them6 .Reward case In our specific case we can observe how Yorkshire Water, Severn Trent Water, Yahoo Europe, DAS Legal Expenses, Carlson Wagonlit and Isotron, who were not using the 6 Jean Moisset, Pierre Toussaint, Jean Plante(2003), La gestion des ressources humaines pour la rà ©ussite scolaire, presse de l’università © du Quà ©bec 5 appropriate reward system, changed their systems. They tried to adapt to their employees and give them the right motivational factor to work for the company. In each company there are some elements that were not taken into consideration.So, for an effective strategy the enterprises should analyze their environment and take into consideration all the players that can influence or that can be an obstacle to implem ent the right payment. Some of these can be unions, external factors, employee conditions, health and security, motivation, competences and retiring. Only after a broad vision of needs and conditions, companies can set up the right payment system. Ideally, it should also be flexible so that it can be modified according to the business development and environmental changes7.Wal-Mart Wal-Mart is listed as one of the worse companies to work for. As we can see from different sources8, it has a very poor view of its employees and they have several problems when it comes to rewarding them. Their reward system doesn’t take into consideration the motives and needs of its people. There is no link between performance and compensation. The company doesn’t apply the â€Å"attract, maintain and motivate people to work for the company†9 policy. We also note discrimination, favoritism, no respect for the individuals and their private life in Wal-Mart’s work conditions.T he key factors of reward management â€Å"balance between pay and benefits, work life balance, individual growth and development, and positive workplace† are absent in Wal-Mart. All of these observations have a direct impact on the company. Previous employees organized a protest against the expansion of the company in New York, and attest of the bad work conditions in shops. Due also to a high turnover; people don’t want to work under these conditions and the lack of communication leads to short term relationship between the shop managers and employees.Wal-Mart employees’ are not integrated in the company, they don’t feel like they belong to it and it hinders goal achievement. From a theoretical perspective, Wal-Mart’s reward system doesn’t match neither Taylor theory (the pay is not high enough), nor Hawthorne’s, (it doesn’t take into consideration the 7 Gilman, M. W. (2009) â€Å"Reward management†, in: Redman, T. ; Wi lkinson, A. , Contemporary Human Resource Management. London: Prentice Hall, 3rd edition, pp. 170-172 8 See Appendix II: Glassdoor , Wal-Mart salaries, , (30 November 2011) and Aling, channel of NYJWJ, Walmart workers speak out about busive th working conditions, , (19 February 2011) 9 Henry L. Tosi and Massimo Pilati (2008),†People management† in Compertamento organizzativo, Egea 6 social needs of the employees), nor Maslow’s pyramid, (basic needs, safety, belongingness, esteem and self-actualization are missing), nor Herzberg’s, (there is no the motivational aspect). To redesign this reward system, we propose one that is based on payment by result, where employees are rewarded according to worked hours.Workers will thereby perceive the company as fair, and Wal-Mart will keep its policy of â€Å"as low wages as possible†, both sides will be satisfied. As monetary reward is not really the most important kind, non-monetary compensations should also be used. There should be an emphasis workforce’s needs by implementing a decent health care plan. Paying attention to their physiological needs, social esteem, self-fulfillment, possibility of growth, will answer their expectation and make them do their best and work at their highest potential (the expectancy theory).Thus, the strategic goals of the company would be more easily reached. Instating a corporate culture would be another recommendation; it will create a togetherness spirit and will ensure that the employees work in line with the company’s vision. The firm is also encouraged to ask for feedback from its staff, so it will identify the most important problems and try solving them. Moreover, applying the goal-setting theory could increase employees’ motivation. Wal-Mart can determine some challenging goals with reward given on achievement, employee of the month or special prizes for instance.As far as the equal treatment of the employees in terms of reward is concerned, there has to be a difference of pay between different types of employees according to differences in terms of work and responsibilities. Those with more responsibilities could be given extra perks for example. By doing so, Wal-Mart will have a better workplace environment, reduce the negative impacts that we stated above, and enhance the commitment of its employees to the firm. Conclusion In the fast-moving and changing globalized context nowadays, companies face fierce competition and pressures.Reaching strategic goals becomes increasingly challenging. In order to do so, a company needs its people, from top managers to employees to be â€Å"engaged 7 and productive†10. Reward management motivates staff with financial compensations and benefits but in certain contexts, these reveal to be insufficient to retain talent. Workforce also takes into account the learning and development opportunities and the work environment. Although a good reward management enhances business performance, the Wal-Mart case illustrates that, some companies present a complete lack of reward management and have to cope with negative consequences. Reward Management Management and OrganizationAbstract As an organization it is very important for the human resources to control employees, motivate them and ensure productivity. Business owners are searching ways to reduce the costs and maximize quality so it is very important to get the most out of every employee. One way to do this is reward systems. In this paper we are going to analyze the reward system parameters and discuss about evaluation criteria.Introduction According to Burack an incentive or reward may be used to motivate an individual or group. A reward can be anything that attracts the employee and make them work in joy. Ä °ncentive programs are mostly monetary but it may also include non-monetary rewards such as recognition, training, development and increased job responsibility. The French says that paying can be two ways:1. Fixed Salary2. Reward linked to performance. Payment is happening one period to another depending on quantity or quality of work. The worker are paid according t o work completed or items produced. The most important thing about rewarding system is to seperate the †salary† from †reward†. So rewarding system is needed to †pay off† employees their performance, and also they will enchance employee motivation in order to make the firm reach its goals. Also rewards improve consistency of services and reduces absences of the employee. Rewards make the firm a great and attractive place to work, making employees happier and well-trained. Having such employees will also attract customers, can you think of a better advertisement?The Key Features Reward plans include monetary and non monetary elements. This will be better  to match the needs of the organization and employees. The goals that the reward system is serving to has to be identified. Planning the incentive to be accurate and on time will be the basis of very succesful rewarding in order to make better workplace and organization. As a manager the plans hav e to setted by communicating the employees and deciding what is the most appropiate reward. Providing monitoring systems such as feedback will lead to succesful and accurate incentive. Rather than the quantity, the quality of the work should be more important for the manager.Designing Reward and Recognition A very good example for recognition may be †the employee of the month† frame at businesses. It is a psychological reward that seperates the employee from its peers by the work he/she has done. Also as we have said before rewards can be tangible. It is very important for the firm to do effective rewarding system so that none of the employees will feel bad or useless for the organization. There are some essential factors for the rewarding system: The rewards must be observable for all of the employees. So that everyone will be sure that the rewarding system is made fairly.The reward system needs to have realistic standarts that make the employees satisfied. The rewardin g plan has to be clear and standartized to make sure that all the members can calculate the reward they will get for a certain effort. The standards of the reward plan has to be set high but realistic, specific, satisfying and effective. Standard is a plan that should not be changed is no necessary situations because it is a contract between firm and the employee. The rewards should be given oftenly to encourage high performance.Types of Rewards:1. Monetary Rewards: Monetary reward is the large raise or bonus payment that company is willing to give to the employee in order to motivate the job performance and meeting certain objectives. These bonus payments may be quick-motivators for the company. Good payments, incentives will make employees challange themselves but setting too much requirements will make the reward ignored. Also profit sharing will lead the employees to contribute more to achieve the profit goals of the company. Stock options  become popular in these recent years , this gives employees the right to buy limited number for a fixed price. This option is a long-term motivator for the organization. Some benefit package may be given to employee such as insurance, good retirement, company gifts, meals, entertainment, flexible working hours, housing etc.2. Non-Monetary Rewards: Reputation and recognition is very important for a person to feel important and valued. The company should make it clear for the employees that good performance will be recognized. Some examples may be: writing employee thank note, bigger desk, gift cards, personalized coffee mugs, games room, gym, child care, impressive job title, own visiting cards, own secretary etc. Also some informal incentives may be leaving early or coming late etc. Individuals are interested in getting others attention and increasing reputation.Conclusion As Herzberg and Maslow states: The physiological and psychological needs and desires of employees must be met and maintained to keep them motivated. So it is important to satisfy the employees in order to keep getting tasks done and achieving goals. Both internal and external motivators need to be used to keep the employee happy and good performing.