Thursday, October 31, 2019
Teachers_ perceptions of the use of technology in teaching language Article
Teachers_ perceptions of the use of technology in teaching language - Article Example First an introduction has been given as to what contribution has technology made in education and especially the teaching of language. Then, teachers’ competencies and barriers to the integration of technology have been discussed. After that, various technological tools and concept are discussed like CALL and ICT, which the teachers can make use of to facilitate their language teaching process. The report is summarized in a concluding paragraph and MLA referencing style has been used properly. Introduction Since the advent of sophisticated technological means, the educators have been trying to modify the instructional process with the help of technology. According to Baker, early 1960’s brought with it â€Å"new curricula, instructional models, and approaches to individualization†(3) of instruction but the drawback with these instructional schemes was their poor management. An ideal classroom environment is so dynamic in which each student presents his own under standing and is comfortable with his own set of instructional materials. Thus, the teacher needs to organize instructional schemes in such a way that all students with their unique calibers are equally attended to. Teachers started feeling the necessity of incorporating information and communication technology in teaching language. According to Kaka, â€Å"Technology (internet) in another side can be the most effective way to increase the student’s knowledge.†Teacher Perception, Competencies and Barriers Kong and Kwok studied teacher perception of the use of information technology in teaching languages in a school in Hong Kong and examined this perception under four domains that included â€Å"teacher perception of their computer training, computer facilities and assistance available, their confidence and comfortability in using computer in daily lessons, and their perception of their roles in using IT in classrooms.†Their survey results supported the idea tha t teacher perception had a positive effect in the usage if teacher-centered technological approaches in the teaching process. They also found that the teachers and the school administration worked in a collaborative environment for the implementation and usage of IT in classrooms especially in language learning. Another similar research has been conducted by Ismail, Ghaleb and Almekhlafi (37) who studied teacher perception teaching Arabic and English languages in schools in UAE. They also found that teachers’ support and willingness to incorporate technology in their teaching languages is very important to obtain positive outcomes. They discussed the benefits of the usage of IT both for the teachers and the students and found from their qualitative and quantitative research that teacher perception should be considered seriously for better implementation of technological tools in classrooms. Hence, as Woodrow (qtd. in Ismail, Ghaleb and Almakhlefi 37) asserts, â€Å"teachers are seen to be active agents in the process of changes and implementation of new ideas as their beliefs and attitudes may support or impede the success of any educational reform such as the utilization of an innovative technology program.†Technological advances have greatly facilitated the language learning. The teachers today can use many technological too
Tuesday, October 29, 2019
Human Resource Management Assignment Example | Topics and Well Written Essays - 1250 words
Human Resource Management - Assignment Example Like men, women employees are important for organizations as they have different perceptions about managing business activities and they definitely help them in achieving their business goals and objectives. In the last couple of years, the number of female employees has increased drastically and policies have been changed to ensure that there is equality among the workforce and women are not deprived of their rights. The biggest advantage of having women as employees is that there is discipline in organizations and business activities are conducted in a proper and strategic way. In addition to having a positive work atmosphere, involving women in business decision making has helped various organizations to achieve success in a short span of time. Women’s work capabilities are totally different from men and they differ in terms of managing business activities, compliance with rules and regulations and critical thinking in business decisions. Since women tend to abide by organi zational policies more than men, the organization’s culture is disciplined and every business activity is properly managed. Along with these aspects, women do a lot of analysis and thinking when involved in any decision-making process and they prefer to evaluate every option from all critical aspects so that resources are efficiently allocated and organization is able to earn proper return on its investment. They need to ensure that they have an appropriate number of them within their work environment.
Sunday, October 27, 2019
Carbon Membranes from Polyamideimide and Polyetherimide
Carbon Membranes from Polyamideimide and Polyetherimide CARBON MEMBRANES FROM POLYAMIDEIMIDE AND POLYETHERIMIDE FOR NITROGEN AND METHANE SEPARATION AND ITS PARAMETER STUDY ABSTRACT Carbon membranes prepared from polyamideimide and polyetherimide were studied to find out the effects of different parameters on membrane characteristics. Their properties were analyzed to understand its scope in methane purification. Different compositions were tried to find out the optimum polymer composition as well as the optimum blend composition. They were pyrolyzed at various temperatures to study the effect of pyrolysis temperature on the morphology of the membrane. Efforts have been made for obtaining a narrow pore distribution as nitrogen and methane have comparable sizes. Analysis of the microstructure of membranes using XRD confirms the variations in chain packing density and d-spacing of polymer chains as a result of a change in pyrolysis temperature. CHN analysis revealed the percentage composition of different elements in the membrane as it was important to control amount of oxygen in the membrane. Glass transition temperature is found using DSC to confirm perfect blen ding of polymers. TGA has been done to find out how the polymer composition affects degradation temperature and to study the chemical changes occurring during pyrolysis. SEM images, both cross section, and surface have been taken to analyze pore structure of the membrane. Keywords: Polyetherimide, Polyamideimide, Pyrolysis, XRD, SEM, CHN. INTRODUCTION Membranes have been widely received as a promising technology in gas separation processes. This is due to its high reliability, low capital investment and low energy usage which overshadow conventional gas separation techniques such as cryogenic distillation, liquid absorption, pressure swing adsorption etc. These established conventional techniques are known for their complexity in processes and high energy intensity. For this reason, researchers are making efforts for an alternative way that promises to give high-cost effectiveness and easy handling (1). Polymer membranes have been widely studied for their application in gas separating units, but they always faced drawbacks like low thermal and chemical stability. Henceforth studies have been focused on carbon membranes, which are the novel and advanced type of membranes. They have been giving promising results ever since and marked a new benchmark for the selectivity of gasses. Excellent ability to withstand high temperature and chemicals made carbon membranes a new branch of study for the researchers to follow. (2) Carbon membranes are prepared by pyrolysing polymer membranes. Pyrolysis is the most significant step in the preparation of carbon membrane. There are different pyrolysis factors that affect membrane properties. During pyrolysis the parameters like pyrolysis temperature, heating rate, atmospheric condition, soaking time etc. can influence the transport properties of the membrane. These factors are chosen wisely based on the application of the membrane. (3) Material selection is the prime factor concerning in preparation of carbon membrane. There are wide varieties of precursor polymers available for preparation of carbon membrane (4). Selection of polymer is the important factor as pyrolysis of different polymer gives carbon membrane with entirely different properties. The precursor polymer should satisfy minimum criteria such as it should not soften nor liquefies during pyrolysis. It should be able to withstand high temperature (5). Polyamidimides and polyetherimides are being recently studied and are found to be giving satisfactory results due to its high melting point and thermal stability (6). Fuertes and Centeno used polyetherimide to prepare supported carbon membrane for gas separation (7). They conducted gas permeability studies for individual gasses as well as for many mixtures of gasses. They also used phenolic resins for their studies (8). Different polymers are always blended to effectively combine the desirable properties of the blending polymers. Gas separation properties of carbon membranes are enhanced while combining different materials. New studies are going on investigating the blending techniques for an optimized result (9). Pore size control is one of the most challenging factors in carbon membrane preparation. Nitrogen and methane is having a kinetic diameter of 3.6 °A and 3.8 °A respectively (10). So in order to separate them by molecular sieving very narrow pore distribution has to be obtained. To get very specific pore size, pyrolysis temperature was changed accordingly. Two types of polymers were chosen so as to understand the effect of individual polymer on membrane properties. Membrane parameters such as polymer concentration, pyrolysis temperature were varied to understand the morphological as well as chemical changes taking place in the membrane. Comparison of carbon membrane with polymer membrane was carried out, which showed interesting results that can be further used to study gas permeation properties of the membranes. Results revealed that these membranes can be used for the separation process of nitrogen from methane. EXPERIMENTAL Material Polyamideimide (PAI) polymer and Polyetherimide (PEI) polymer which are required for the preparation of polymer membrane were purchased from UTM, Malaysia. N-methyl 2-pyrrolidone (NMP) was the solvent used and it was purchased from Merck Life Science Private Limited, Mumbai, India. Methanol used for washing was bought from Titan Biotech Limited, Rajasthan, India. Acetone was purchased from Merck Specialities Private Limited, Mumbai, India. All reagents were used without any further purification. Polymer Membrane Preparation Polymers that were chosen for preparation were polyamideimide and polyetherimide. The solvent used was N-Methyl-2- pyrolidone. The polymer concentration in NMP was varied from 2- 20 wt.% as shown in the Table 1. Different batches of polymer solution were prepared by dissolving the corresponding amount of polymer in 25ml NMP. Polyamideimide-polyetherimide ratio in the solution was varied as 25/75%, 50/50%, 75/25%, 0/100% and prepared different batches accordingly. For complete dissolution, the solution was kept for magnetic stirring for 3 hrs. The temperature was increased up to 80oC occasionally for 10 minutes, to avoid undissolved particles in the solution. Later the solution was sonicated in a sonication bath. The solution was then casted on a glass plate using a casting rod. The casting rode that was used has a dimension of 450ÃŽ ¼m. The glass plate was kept in the atmosphere for two days for evaporation of the solvent. Later it was kept inside a vacuum oven at 60oC for complete r emoval of NMP. Table 1: Polymer Batches Sample Code Total Polymer (%) PAI/PEI wt percentage (%) PM-01 2 25/75 PM-02 9 25/75 PM-03 12 25/75 PM-04 15 25/75 PM-05 18 25/75 PM-06 20 25/75 Carbon Membrane Preparation Polymer membrane was cut into a rectangular piece and transferred into an alumina crucible. It was then kept inside a tubular furnace by VBCC for pyrolysis. It was a horizontal furnace with alumina tube. Nitrogen environment was chosen for pyrolysis. The flow rate of nitrogen was kept at 25ml/min. Polymer membranes with PAI/PEI composition of 25/75% was only further used for making carbon membrane as they showed good structural stability compared to other batches. For pyrolysis different protocols were followed. The protocols are as shown below, 1) 50 to 250 oC at a ramp rate of 13.3 Co/min.(2) 250 oC to (Tmax-15) oC at a ramp rate of 3.85 Co/min.(3) (Tmax-15) oC to Tmax oC at a ramp rate of 0.25 Co/min.(4) Soak at Tmax for 2 h. (11)  After pyrolysis, it was kept for natural cooling before taking out. The different batches of carbon membranes based on different pyrolysis protocol were prepared as given in the Table 2. Polymer membrane with 9% polymer concentration was the membrane used for studying different pyrolysis protocols. Table 2: Carbon Membrane Batches Sample Code Total Polymer (%) Pyrolysis Temperature(oC) CM-01 2 600 CM-600 9 600 CM-450 9 450 CM-800 9 800 CM-03 12 600 CM-04 15 600 CM-05 18 600 CM-06 20 600 Characterization of Synthesized Membranes Various techniques were employed for the characterization of polymer as well as their derivative carbon membranes. Differential Scanning Calorimetry (DSC) was used to find out glass transition temperature of polymer membranes and to study the blending of polymers. Under nitrogen atmosphere, scans from 50 to 450oC at the heating rate of 10oC/min were performed on a DSC Perkin Elmer model 6000. Thermogravimetric analysis (TGA) was used to study the thermal degradation of the polymer membranes. Degradation temperature of the membrane, as well as the weight loss during the process, is analyzed. It was carried out on a TGA Perkin Elmer 4000 model, in nitrogen atmosphere at a flow rate of 30 mL min-1. The temperature range was from 50 up to 750 oC. X-ray Diffractometer (XRD) was used to study the structural changes in membrane due to variation in pyrolysis temperature. Perkin Elmer 1621 wide-angle X-ray diffractometer was the instrument used to study the microstructural changes in membrane. Using Braggs law the average d-spacing of the membrane was evaluated. It is as shown below, nÃŽ » = 2d sin ÃŽ ¸, where n is an integral number, ÃŽ » is the X-ray wavelength, d is for the inter-layer spacing between the polymer chains and ÃŽ ¸ is the diffraction angle. CHN analysis was conducted to study the variation in the elemental composition with pyrolysis temperature. Elementar Vario EL was the equipment used here for analysis. Compostion of oxygen was found using separate apparatus. Scanning Electron Microscopy (SEM) was used to get pore size of the membrane as well as get a closer image of the membrane. JEOL Model JSM 6390LV is the model used for the analysis. RESULTS AND DISCUSSION Physical properties Both PAI and PEI met the requirements for preparing carbon membrane with promising results. While contents of PAI in membrane made the membrane more brittle, which is due to its aromatic rings, (10) PEI gave structural support to the membrane. So PAI/PEI content was fixed at 25/75% for all the batches later on. As two polymers are used, the miscibility of the precursors has to be tested and glass transition temperature of the membrane was taken as the criteria for the evaluation. For the polymer blends, Tg was found to be in between of that of individual polymers. Tg of PEI and PAI are 217 °C and 280 °C respectively. And from the Table 3 it is clear that both the polymers are completely miscible and was perfectly blended together. Table 3: Glass Transition Temperature Sample Code PAI/PEI wt Percentage (%) Glass Transition Temperature (oC) PM-25 25/75 233 PM-50 50/50 249 PM-75 75/25 265 PM-100 0/100 219 Effect of polymer concentration on thermal characteristics         Unlike polymer membrane, carbon membrane was thermally and chemically stable. Thermal stability is analyzed by TGA. TGA analysis of all polymer membranes is shown in Figure 1. It shows that concentration does not have much effect on degradation temperature of membranes. But it gives an insight into chose the pyrolysis protocol that has to be followed. There are different pyrolysis protocols for preparation of carbon membranes, based on type of precursors used, one protocol is fixed. Figure 1: Thermal analysis of Polymer Membranes Figure 1 illustrates the weight variation of polymer membranes during the heating process up to 800 °C. According to the TGA thermo-diagram, the degradation temperature (Td) is 550 °C and was defined as the temperature corresponding to 15% weight loss. This indicates the high thermal resistance of the membrane. The total weight loss at 800 °C, with 10 °/min heating rate, was approximately 60%. The enhanced thermal stability of the membrane highlights its quality as a precursor for the preparation of carbon molecular sieve membranes. Effect of polymer concentration on structure of membrane Figure 2: XRD of Carbon Membrane of different concentrations Effect of polymer concentration on structure of carbon membrane is shown in Figure 2. As the concentration of polymer was increased from 2% to 20%, peak intensification took place, resulting in a more compact structure. Pore size was reduced and membrane with higher packing density is formed. Effect of pyrolysis temperature on microstructure of membrane Structural analysis on carbon membranes was done by obtaining XRD spectra as a function of pyrolysis temperature. As shown in Figure 3, the XRD spectrum for membrane prepared at 450oC is a merger of two peaks at 22.7o and 18.8o. With increase in pyrolysis temperature, the peaks joined into a single but intensified peak with a shift toward the smaller pore sizes; indicating a decrement in average d-spacing. Figure 3: XRD of Carbon Membrane prepared at different temperatures d-spacing in carbon membrane refers to interlayer distances, with increase in temperature more compact structures are formed. 800  °C was found to be the optimum pyrolysis temperature as membrane having high density and packing efficiency are formed at this temperature. (1) Effect of pyrolysis temperature on membrane composition In order to study how pyrolysis temperature changed the chemical composition of the membrane, elemental analysis has been conducted for both polymers as well as carbon membrane. In Figure 4, the point zero in x-axis corresponds to precursor membrane and it has the lowest carbon content and they started to increase with increase in pyrolysis temperature. However other elemental contents like oxygen, nitrogen and hydrogen was reduced with increase in temperature. Presence of oxygen compounds in the carbon membrane surface can make the membrane more hydrophilic and can cause swelling of membranes (11). For the better performance of carbon membrane oxygen content has to be less than 4% (12).When pyrolysis temperature in increased, oxygen content is reduced. Membrane prepared at 800oC has oxygen content less than 4%. So the effect of pyrolysis temperature on hydrophilictiy of the carbon membrane was tested to study the influence of oxygen in the membrane. From the Table 4 it is clear that as pyrolysis temperature is increased, amount of water absorbed is decreased, thus increasing the hydrophobic nature of carbon membranes. This can be explained by the reduction in oxygen containing group in membrane with pyrolysis temperature. Figure 4: Elemental analysis of membranes Table 4: Hydrophilicity of carbon membranes Sample-Code Pyrolysis Temperature ( °C) Wet weight of the membrane (g) Dry weight of the membrane (g) Amount of water absorbed (g) CM-450 450 0.0588 0.0553 0.0035 CM-600 600 0.0523 0.0503 0.0020 CM-800 800 0.0687 0.0607 0.0008 Morphology of Membranes The surface and cross-section morphologies of carbon membranes as well as polymer membranes were investigated by SEM (Scanning Electron Microscopy) techniques. Surface image of polymer membrane is shown in Figure 6. It shows a smooth and defect free surface without any deformation. Cross section of the polymer membrane is also shown below. Compared to carbon membrane it does not have uniform pore distribution. All the pores are elongated pores and the membrane formed is very dense. Thickness of polymer membrane was found to be 250ÃŽ ¼m. The honey-comb structure of carbon membrane shows the pore structure in the membrane (Figure 5). It is clear from the image that the membrane is rich in pores and has quite a uniform pore distribution. The membrane was having a sponge-like matrix unlike polymer membrane. This uniform pore distribution allows carbon membrane to have high selectivity over polymer membrane.                                                                     (b) Figure 5: SEM images: (a) Top surface and (b) Cross section of Carbon Membrane                                                                     (b) Figure 6: SEM images: (a) Top surface and (b) Cross section of PolymerMembrane CONCLUSION Different polymer blends were tried for the preparation of polymer membrane and membranes derived from Polyamideimde/Polyetherimide (25/75wt.%) exhibited more attractive performance than the other blends. Polymer concentration was varied from 2-20% and at 9% it was found to be exhibiting best results. Polymer membranes prepared from PAI/PEI were transparent hydrophilic membranes. Polymer membranes were thermally unstable compared to carbon membrane and were found to have degradation temperature around 450oC. Complete miscibility of both the polymers was confirmed and the glass transition temperature of the polymer membrane was also found. For the preparation of carbon membrane different protocols were followed for pyrolysis, and 800oC was found to be the optimum temperature for pyrolysis. Thermal analysis of membrane had conducted, which proved the higher thermal stability of the carbon membrane. Morphological studies shows that carbon membrane prepared at 800oC have desirable pore size compared to other membranes prepared at lower temperatures. XRD studies of the carbon membrane showed that as temperature increases, more compact membranes are obtained, which decreases the permeability of the membrane. All the membranes have shown promising results that can be further investigated for gas separation studies. References 1. Carbon membranes from blends of PBI and polyimides for N2/CH4 and CO2/CH4. Seyed Saeid Hosseini, Tai Shung Chung. s.l. : Journal of Membrane Science, 2009, Vol. 328. 174-185. 2. A review on the latest development of carbon membranes for gas separation. A.F. Ismail, L.I.B. David. s.l. : J. Membr. Sci., 2001, Vol. 193. 1. 3. Fabrication of carbon membranes for gas separationa review. S.M. Saufi, A.F. Ismail. s.l. : Carbon, 2004, Vol. 42. 241-259. 4. Gas permeation through micropores of carbon molecular sieve membranes derived from kapton polyimide. Suda H, Haraya K. s.l. : Chem B, 1997, Vol. 101. 3988-94. 5. DH, Morthon-Jones. Polymer processing. London : Chapman and Hal, 1984. Chapter 2. 6. Relationship between chemical structure of aromatic polyimides and gas permeation properties of their carbon molecular sieve membranes. H.B. Park, Y.K. Kim, J.M. Lee, S.Y. Lee, Y.M. Lee. s.l. : J. Membr. Sci., 2004, Vol. 229. 117. 7. Carbon molecular sieve membranes from polyetherimide. Fuertes AB, Centeno TA. s.l. : Microporous Mesoporous Mater, 1998, Vol. 26. 23-6. 8. Supported carbon molecular sieve membranes based on phenolic resin. Centeno TA, Fuertes AB. s.l. : J Membr Sci, 1999, Vol. 160. 201-211. 9. Gas separation properties of carbon molecular sieve membranes derived from polyimide/polyvinylpyrrolidone blends: effect of the molecular weight of polyvinylpyrrolidone. Y.K. Kim, H.B. Park, Y.M. Lee. s.l. : of the molecular weight of polyvinylpyrrolidone, 2005, Vol. 251. 159. 10. Ahmad Fauzi Ismail, Dipak Rana, Takeshi Matsuura ,Henry C. Foley. Carbon-based Membranes for Separation Processes. London : Springer, 2011. 11. Carbon molecular sieve membranes derived from Matrimid polyimide for nitrogen/methane separation. Xue Ning, William J. Koros. s.l. : Carbon, 2014, Vol. 66. 5 1 1 5 2 2. 12. Interaction, miscibility and phase. E. Fà ¶ldes, E. Fekete, F.E. Karasz, B. Pukà ¡nszky. s.l. : Polymer, 2000, Vol. 41. 975. 13. Gas permeation and micropore structure of carbon molecular sieving membranes modified by oxidation. Kusakabe K, Yamamoto M, Morooka S. s.l. : J Membr Sci , 1998, Vol. 149. 59-67. 14. Characterization of ultramicroporous carbon membranes with. Jones CW, Koros WJ. s.l. : Ind Eng Chem Res, 1995, Vol. 34. 158-163.
Friday, October 25, 2019
Visions of Utopia in Bellamys Looking Backward Essay -- Looking Back
Visions of Utopia in Looking Backward  Edward Bellamy addressed many of the topics crucial to the development of a civilization in his book, Looking Backward. In the story he addresses several different features of years past utopias. Some being "universal harmony, distribution of occupation according to individual aptitudes, equality of reward, universal ease and comfort, reduction of hours of labor, suppression of idleness, of competition, of the struggle for life, and also for money" (De Laveleye). Many of these topics Bellamy addresses in a positive manner; while others he does not. In Bellamy's book, Looking Backward, a character named Julian West suffers from insomnia. Because of his condition, he is put into a soundproof chamber. He falls asleep and does not wake up for over one hundred years. His story is about the civilization that he discovers when he wakes up. America has developed into a socialistic country and is standing on the brink of utopia. Bellamy addresses inequality in his book, Looking Backward. In the old times; inequality was cured by making the greedy industrial. In this new utopia, there is no need for inequality because everyone has the same. "There shall be no individual production of property and no individual accumulation of it. It shall be produced by the state, and distributed by the state equally to all individuals, without any reference to their function in producing it, intellectually or physically" (Harris). This simply states that in Bellamy's utopia it makes no difference what your social standing is; everyone is given the same amount of supplies and money. Bellamy addresses the distribution of professions in Looking Backward. It is quite obvious to realize that the more pl... ...speak it from time to time. In this way, Bellamy tires to show that his utopia is non-discriminatory. Edward Bellamy addressed several very tough subjects in his book, Looking Backward. He did this by attempting to create an interesting story in which people could find his views on the future of America as an utopia. Although his attempt at literary fame failed; Bellamy did succeed in exposing possible solutions to many of the problems that still plague our country today: fair job placement, material possessions and poverty, unregulated capitalism, and discrimination. Bibliography Taylor, Walter Fuller. "Edward Bellamy", The Economic Novel. 1897 Bowman, Sylvia E. "Bellamy's Missing Chapter", The New England Quarterly. 1958 DeLaveleye, Emile. "Two New Utopia's", Contemporary Review. 1890 Harris, W.T. "Edward Bellamy's Vision", The Forum. 1889
Thursday, October 24, 2019
History †Western Civilization Essay
Darwin’s view on natural selection is that man incessantly presents individual differences in all parts of his body and in his mental faculties. These differences or variations seem to be induced by the same general causes, and to obey the same laws as with the lower animals. In both cases similar laws of inheritance prevail. Man tends to increase at a greater rate than his means of subsistence; consequently he is occasionally subjected to a severe struggle for existence, and natural selection will have effected whatever lies within its scope. A succession of strongly-marked variations of a similar nature is by no means requisite; slight fluctuating differences in the individual suffice for the work of natural selection; not for any reason to suppose that in the same species, all parts of the organization tend to vary to the same degree. It may be assuring that the inherited effects of the long-continued use or disuse of parts will have done much in the same direction with natural selection. Modifications formerly of importance, though no longer of any special use, are long-inherited. When one part is modified, other parts change through the principle of correlation, of which we have instances in many curious cases of correlated monstrosities. Something may be attributed to the direct and definite action of the surrounding conditions of life, such as abundant food, heat or moisture; and lastly, many characters of slight physiological importance, some indeed of considerable importance, have been gained through sexual selection. The belief in God has often been advanced as not only the greatest, but the most complete of all the distinctions between man and the lower animals. It is however impossible to maintain that this belief is innate or instinctive in man. On the other hand a belief in all-pervading spiritual agencies seems to be universal; and apparently follows from a considerable advance in man’s reason, and from a still greater advance in his faculties of imagination, curiosity and wonder. Darwin’s aware that the assumed instinctive belief in God has been used by many persons as an argument for His existence. But this is a rash argument, as one thus is compelled to believe in the existence of many cruel and malignant spirits, only a little more powerful than man; for the belief in them is far more general than in a beneficent Deity. The idea of a universal and beneficent Creator does not seem to arise in the mind of man, until one has been elevated by long-continued culture. Darwin’s view on race talks about modifications acquired independently of selection, and due to variations arising from the nature of the organism and the action of the surrounding conditions, or from changed habits of life, no single pair will have been modified much more than the other pairs inhabiting the same country, for all will have been continually blended through free intercrossing. Since man attained to the rank of manhood, he has diverged into distinct races, or as they may be more fitly called, sub-species. Some of these, such as the Negro and European, are so distinct that, if specimens had been brought to a naturalist without any further information, they would undoubtedly have been considered by him as good and true species. Nevertheless all the races agree in so many unimportant details of structure and in so many mental peculiarities that these can be accounted for only by inheritance from a common progenitor; and a progenitor thus characterized would probably deserve to rank as man. But it must not be supposed that the divergence of each race from the other races, and of all from a common stock, can be traced back to any one pair of progenitors. REFERENCE Darwin, C. (1874). The descent of man, and selection in relation to sex. New York: A. L. Burt. Hart, M. (1992). The descent of man; the origin of species. Retrieved August 15, 2006, from the Great Literature Book-Worm org Web site:http://www. book-worm. org/darwin-charles/the-descent-of-man/chapter-21. html
Wednesday, October 23, 2019
Jane Eyre Outline
She achieves the love she had been starved for and slowly accumulating since her childhood after Gathered. I. She has the ultimate love with someone who sees her as beautiful and worthwhile. It. Towards the end of the novel she seems to be referred to more pretty more often than plain.Why? B. Talking about SST. John ties up loose ends: I. Self-sacrifice; how to serve people the right way? I'. Illnesses- prevalent throughout Jane Ere (SST. John's is overwork) Ill. India reminds of West Indies: Rochester & Bertha; Travel c. Becoming worthy of love: I. Respecting morals and the Inviolability of the soul as much as earthly pleasures it. Rochester praises God, who he had forsaken for his misfortune with Bertha Ill. Jane sees another side of the social system and lives simply and selflessly lb. Jane goes to find her path, and receives a sign from God to go back to where she belongs whenRochester Is ready v. The child Is a symbol of their new life Jane Ere Outline By sauerkraut as beautiful and worthwhile. I'. Towards the end of the novel she seems to be it. Illnesses- prevalent throughout Jane Ere (SST. John's is overwork) ill. India reminds I. Respecting morals and the inviolability of the soul as much as earthly pleasures it. Rochester praises God, who he had forsaken for his misfortune with Bertha iii. Jane sees another side of the social system and lives simply and selflessly ‘v. Jane goes to Rochester is ready v. The child is a symbol of their new life
Tuesday, October 22, 2019
Geography of South Carolina essays
Geography of South Carolina essays The Blue Ridge is named for the Blue Ridge Mountains that are in it. It is the smallest region covering less than 2 percent of the state. It has many mountains consisting of metamorphic rock over 350 million years old. The next region is the Piedmont. The region of Piedmont stretches from the Blue Ridge to the fall line. Piedmont means foot of the mountains. It covers about one-third of the state. It is the second largest region and is about one hundred miles wide. Over a million people live in the Piedmont region. It is home to the cities of Greenville, Spartanburg, and Rock Hill. South Carolinas automobile plants and many textile factories are in the region. The next region is the Sandhills. The Sandhills are in the middle of the state. The region stretches from the Fall Line to the Coastal Plain. Sandhills was a coastline thousands of years ago. The sandhills is also sometimes called the Red hills. It is also referred to as the Midlands. It includes parts of Aiken, Chesterfield, Kershaw, Richland, and Sumter Counties. Columbia the capitol of the state is in this region. The next region is the Coastal Plain. It is the largest region covering over 20,000 square miles and goes from the Sandhills to the Coastal Zone. IT is divided into the outer and Inner Coastal Plains. The only difference is the inner has more hills. Cities in the coastal Plain include Sumter, Florence, and Orangeburg. The most interesting features of the Coastal Plain are the oval depressions called bays, which may or may not have water. One of the most famous bays is the bay Swamp in Sumter County. The final region is the Coastal Zone. It stretches from the Atlantic Ocean inland for about 10 miles. It has great beaches such as Myrtle Beach and North Myrtle. The barrier islands, which are just off the coast, protect the beaches from eroding. It gets the most tourists and is widely ...
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