Social Factors Missing In the Development of Will Hunting and His Essay

Social Factors Missing In the Development of Will Hunting and His Crisis of Identity - Essay Example This paper is aimed at identifying the social factors that are missing in the development of Will Hunting (Matt Damon), the primary character in the movie, and his crisis of identity. Storyline The movie revolves around Will Hunting who works as a janitor in the prestigious MIT. Will is a mathematical genius but trapped in a mind that is not aware of his capabilities and haunted by his past. He spends his life like any other guy in the neighbourhood working on an average construction job and picking up fights along with his neighbourhood friends. . He has numerous encounters with the law as other guys in the neighbourhood. He has an identity crisis and tries hard to adjust with crushing his genius and trying to mould his life with that of the society around him. The various social factors in his past have contributed to Will’s arrogant attitude. His genius is identified by a MIT professor who decides to polish and expose Will’s incredible genius to the world. In order t o do so, he bails him out of the police station on a condition that Will work at his talent and see a psychologist. The movie continues with how Will with the help of psychologist Sean Maguire (Robin Williams) overcomes his personal childhood experiences and discovers his true potential and genius. Social Factors There are various social factors that are missing in Will’s life which affect his development and leads to his identity crisis. Family Will growing up was an orphan and lived with his foster parents. The absence of his own family made an impact on Will and also family dynamics in the foster family was not an ideal one. Very soon he was left without a family. This experience contributed towards Will developing a negative attitude towards love and care. He believed that nobody would care or truly love him. He feared rejection and as a result of this he never had a consistent serious relationship as he used to get out of one before it could turn into a serious relations hip. Will also tried to fill in the void, created due to the absence of a family, with his friends. But most of his friends did not recognise or understand him except for his best friend Chuckie (Ben Affleck). Will blamed himself for all miss happenings in his life and was trying to accept his mediocre life. But even after trying hard, he could not accept his true identity and would make up an identity. This is best portrayed in the movie when he lies to Skylar (Minnie Driver) about his family saying he has big family with 12 brothers. The following conversation in the movie between Will and Skylar is where Will lies to overcome his identity crisis: Skylar: Do you have lots of brothers and sisters? Will: I'm Irish Catholic, what do you think? Skylar: But how many? Will: You wouldn't believe me if I told you. Skylar: Why? Go on, what, 5? 7? 8? How many? Will: I have 12 big brothers (Damon & Driver) Abusive Childhood Will was abused by his drunken foster father during his childhood. I t was an unstable neighbourhood that Will grew up in and to add to it he had an abusive foster father. Due to this, Will had to face issues of abandonment and rejections. This made a serious impact on Will. As a reaction to his troubled childhood, Will indulged in numerous illegal activities such as burglary, assault, violence, etc. Also he distanced himself from his family and spent most of his time reading books in the library. This hindered his development and only communication that he had was with his friends. Following is an excerpt from the movie where Will describes his childhood: What do you wanna know? That I don't have 12 brothers? That I'm a fuckin' orphan? You don't wanna hear that... no, you don't wanna hea

Economy in Russia Essay Example | Topics and Well Written Essays - 2000 words

Economy in Russia - Essay Example Russia has to deal with persistent economic problems, which include: The consensus and eventual policy position taken in Russia was that in order for the Russian economy to develop and benefit from the increasing integration of the global market and trade, policy reforms must be instituted. These reforms should directly address the challenges cited above. The past few years saw policy pronouncements that include price reform, the privatization of enterprise, macroeconomic stabilisation and fiscal decentralisation. Beginning in 1992, the government began instituting economic reform in these areas and based on the trajectory of growth of the Russian economy up to the present, it is clear that some of the governmental policies have worked. Terterov (2004), for example, cited how investments to the country has overtaken capital flight, which has been the pattern in the past. As a result the economy has received a substantial boost, particularly in manufacturing and industrial sector, helping to create jobs and revenue for the state (Terterov 2004). Empirical research has also shown the positive link between governmental reform and wage increase and unemployment (Gerber 2006). Wolf and Lang (2006) in a study for the RAND Corporation reported that the recent impressive economic performance can be attributed to decentralized decision-making and the change in resource allocation from the previous state and bureaucratic allocation to the resource allocation through the market. During Vladimir Putin’s administration, Russia was finally recognized as a market economy. The United States and the European Union declared this in June 2012. This is important for Russia because being classified as one means better opportunities for trade with other countries. For example, as a result of the recognition, the United States has removed several restrictions and guidelines that govern the US trading relationships with nonmarket economies

Effect of Tulsi and Neem Extract on Mosquito Larvae

Effect of Tulsi and Neem Extract on Mosquito Larvae Research question: What are the effects of medicinal plants like Ocimum sanctum (tulsi) and Azadirachta indica (neem) extract on the mortality of Culex larvae? ABSTRACT The effect of Neem and Tulsi on mosquito larvae. The project is aimed at finding natural pesticides or bio-pesticides that effectively control the mosquito population by killing mosquito larvae. They could be used as alternatives to the current pesticides used that have adverse effects on the environment and other species besides the target pest. Mosquitoes are hosts for a very large number of diseases and therefore keeping larvae under control and disallowing the emergence of adult mosquitoes is essential. Two plant extracts have been tested; Neem and Tulsi. The initial hypothesis was that both extracts would have some effect on the larval development and cause mortality in the larvae due to the properties of both plants. The secondary initial hypothesis was that Neem extract would be significantly more effective in killing the larvae than Tulsi at the same percentage. Concentrations of 1% to 10% of each extract were prepared and 10 trials each performed with 10 larvae were undertak en. The samples were checked on after 12 hours and once again after 24 hours and the number of larvae killed in each case was recorded. The results were conclusive and both extracts were very effective at killing larvae at 10% with Neem killing an average of 10 larvae out of 10 and Tulsi 9.6  ± 0.52. However t-values showed that the initial hypothesis stating that Neem would be more effective at all concentrations was incorrect and only 2%, 9% and 10% were significantly more effective in 24 hours with t values of 3.13, 2.92 and 2.43 respectively (> table value of 2.10). This means that in 2%, 9% and 10% concentrations, Neem should be used instead of Tulsi as it is significantly better. This is all very exciting as environmentally safer pesticides can be developed from these two plant extracts. 1. Introduction Research question: What are the effects of medicinal plants like Ocimum sanctum (tulsi) and Azadirachta indica (neem) extract on the mortality of Culex larvae? The conservative pesticides are augmented to combat complicated pest problems in mosquitoes. In human health during the past few decades these pesticides played an important role in the inhibition of diseases caused by mosquitoes either by inactivating or killing these mosquitoes. Later on when these pesticides are getting accumulated in the environment proved to be hazardous to the environment and mankind. Frequent application of synthetic organic insecticides resulted into pest resistance and outbreak. Most of the insecticidal compound falls within four main classes namely organochlorides, organophosphates, carbamates and pyrethroids. Out of these the major classes of insecticides, the insecticides used in present situation are organophosphates and carbamates. There are problems of pesticides resistance and negative impacts on non-target organisms including man and the environment.[1] Environment problems due to the insecticides and pesticides such as destruction of beneficial organisms, non-target pest, some of the pesticide residues in the host plant resulting in stunted grow or killing other organisms have come to an end. This work is basically taken up by some of the herbal plants. These herbal plants possess some of the active ingredients which are eco-friendly but simultaneously have a severe effect on the mosquito populations.[2] Medicinal plants are the most promising source and under extensive trails for their biological activity against various mosquito larvae. During the last 10 to 15 years, interest in botanical insecticides has increased to look for substitutions for synthetic insecticides with those based on naturally occurring substances. The use of botanicals in pest management is not only useful for suppression of pest population but also helps to maintain the sound ecological balance.[3] BOTANICALS IN USE The groups of plant possessing insecticidal substances are enormous. More than 2400 species of the plants in India possess insecticidal properties3. In the middle of the 17th century, most of the economically important natural plant compounds obtained from the plants like neem, tulsi, adathoda, chrysanthemum, turmeric, garlic, tridax etc. are used in commercial insect control. Despite the relative safety of the well-known botanical insecticides, most of these substances have their drawback hindering large-scale application. The chemicals obtained from these plants are unstable in the sunlight and are rapidly metabolized thus limiting their potency and application.[4] Botanical insecticides break down readily in soil and are not stored in animal and plant tissue. Often their effects are not as long lasting as those of synthetic insecticides and some of these products may be very difficult to find. The plant parts used for extraction or assay were the leaves, roots, tubers, fruits, seeds, flowers, the whole plant, bark, sap, pods and wood. The most commonly utilized parts were the leaves, roots. The plant families Asteraceae, Fabaceae and Euphorbiaceae contain most of the insecticidal plant species reported. Recently several other plants viz. Neem, Adathoda, Chrysanthemum, Turmeric, Onion, Garlic, Ocimum, Ginger and some other plants have been reported as insecticidal plants which can be used in insecticide preparation. The leaf extracts of Tulsi (Ocimum basilicum, O. sanctum) and vetiver (Vetivera zizanoides) are useful in controlling leaf miners in potato, beans, eggplant, tomato, chilies, etc. Some of the plants having herbal insecticide princip les are presented on table. Source of Plant Nature of action Chemical Group Plant parts Azadirachta indica Contact poison Azadirachtin Leaves, seed Ocimum sanctum Contact, Repellent Tulsin Leaves Chrysanthemum Contact, Repellent Pyrethrin I Flower, seed Tridax procumbens Contact poison Flower Zingiber officinale Repellent zingiberene Rhizome Among all the important insecticidal plants, Neem (Azadirachta indica) is the most promising source of bio-pesticide and its various formulations are extensively used for pest control.[5] Neem leaves, stems, seeds and oil have been used for pest control in sericulture.[6] The limonoids present in it and its products have made it a harmless to mankind while functioning as insecticide, bactericide, fungicide, pesticide etc. It is likely to provide a solution to many of pest and disease problem in sericulture.[7] Generally, extracts of plant leaves or seed are prepared and sprayed; otherwise, seeds are dried under sunshade, powdered finely and applied as dust. More than 20 Neem based biopesticides are available in the market (Table 3). Neem gets biodegraded in a matter of weeks when exposed to sunlight or in soil. Neem products are highly photodegradable and normally degrade within a week. No problem of development of pest resistance and resurgence has been reported from neem products. Hence they have characteristics suitable for IPM strategy. Much of the informations are available on insecticidal properties of plants having some sort of toxic property against insects. The plant parts to be used should be removable: leaves, flowers or fruit and harvesting should not mean destruction of the plant. Azadirachta indica: Neem is perhaps the most well known of all herbs and has been used in ayurveda in India for centuries. The active ingredient in Azadirachta indica (neem) is azadirachtin. It a member of the Meliaceae family and is a botanical cousin of mahogany. Neem is very hard and virile. Neem is especially useful due to its climatic tolerance that allows it to be grown all over the world though it is usually found in tropical regions. It has insecticidal, antifeedant, growth regulating and development-modifying properties and has properties that make it attractive in insect control. It reduces fecundity and longevity as well as increased development time of immature insects. On insects it has been shown to act as a growth retardant and cause molting disorders, change of behavior and morphogenetic defects. Mosquito control is essential as they act as carriers for malaria, filariasis and a host of other diseases as well as being a nuisance. There is a high demand for a less environmentally harmful insecticide as the ones currently used have high neurotoxic effects. Recent studies have also demonstrated neem-induced effects on vitellogenesis and severe degeneration of follicle cells during oogenesis in mosquitoes. It also has several medical properties such as a cure blood morbidity, biliary afflictions, itching, skin ulcers, burning sensations and pthysis. It is also an effective cure against ringworm, eczema and scabies. In English the tree is known as margosa and attains a maximum height of 40 to 50 metres. Ocimum Sanctum: Tulsi is an aromatic plant in the Lamiaceae family. Tulsi has been used for thousands of years in Ayurveda due to its diverse healing properties. Tulsis extracts are used in ayurvedic remedies for common colds, headaches, stomach disorders, inflammation, heart disease, various forms of poisoning, and malaria. Traditionally, tulsi is taken in many forms: as herbal tea, dried powder, fresh leaf, or mixed with ghee. Essential oil extracted from Karpoora Tulsi is mostly used for medicinal purposes and in herbal cosmetics, and is widely used in skin preparations due to its anti-bacterial activity. For centuries, the dried leaves of Tulsi have been mixed with stored grains to repel insects.[8] These plants in harmonious integration with other safe methods of pest control like biological control can provide eco-friendly and economically viable solutions for pest problems in near future. ADVANTAGES Plants producing the compounds having insect growth regulators (IGR), feeding deterrents, repellents and confusants activities are known by the farmer because most of the time they grow in the same general area. Some of these products may be these products act very quickly inhibiting insect feeding even though long term they do not cause insect death. Since most of these products have a stomach action and are rapidly decomposed they may be more selective to insect pests and less aggressive with natural enemies. Most of these compounds are not phytotoxic and have rapid action and low toxicity to mammals and plants. Resistance to these compounds is not developed as quickly as with synthetic insecticides. DISADVANTAGES Most of these products are not truly insecticides since many are merely insect deterrents and their effect is slow. They are rapidly degraded by UV light so that their residual action is short and breakdown is rapid, requiring more precise timing of and/or more frequent application. Not all plant insecticides are less toxic to other animals than the synthetic ones. They are not necessarily available and sometimes cost is more. Most of them have no established residue tolerances and there is lack of test data and sometimes lack of state registration of some materials. There are no legal registrations establishing their use. Not all recommendations followed by growers have been scientifically verified. The above statements are altered if you find anything that can be added or deleted you can do it. Insects adapt themselves to aquatic habitats inspite of their terrestrial origin. The aquatic and semi-aquatic insects are remarkable for their diversity of forms, reflecting adaptation to a wide variety of niches such as salt water pools, saline ponds, hot springs, high mountain lakes, large rivers, temporary and permanent ponds. Mosquitoes are known as vectors of the pathogens causing human diseases. They belong to the order Diptera; the true flies. Like all flies they have two wings but unlike other flies they have scales and the females have sucking proboscis. There are over 2500 species of mosquitoes. Culex mosquitoes are known to be painful and persistent biters and are a nuisance. The reason why I chose this topic is because the pesticides that are currently used in pest control contain chemicals that have diverse side effects on the environment and organisms other than the target pest. I decided to use natural substances found in nature and see if they would work as a form of pest control instead. I have used two extracts; Neem and Tulsi, in order to see which one was more effective in killing these mosquitoes. Neem, Tulsi and eucalyptus have been used as they are prevalent in the tropical and sub-tropical countries of Africa and Asia with a large mosquito population and there have been significant prospects of being used as an insecticide on a commercial scale due to their useful properties. Aim: In early literature mentioned above it was noted that the mosquitoes inhibit both temporary and fresh water stagnant bodies and they are found in abundance causing nuisance to the human population. The aim of the present study was undertaken on the following aspects 1. To determine the number of Culex larvae killed in 12 hours and 24 hours using different plant extracts like Neem and Tulsi in crude form. 2. To determine the number of Culex larvae killed in 12 hours and 24 hours by Neem and Tulsi under various concentrations (1%-10%). 3. To determine the statistical analysis t tests were performed. 2. Materials and Method 2.1. Materials / Equipments 250 ml beaker, Mortar and pestle, Pipette, Stirrer, Water, Fishing net (for catching larvae), Dropper, Watch glass, Petri dishes. Culex larvae: For the present study, the larvae of Culex mosquitoes were used throughout the investigation. These larvae were chosen because they were most abundant in the water bodies which are very active fast wriggling movement. The Culex larvae were collected from stagnant water bodies at Varthur Lake in Bangalore (fig.1) using a hand net. They were transported in plastic buckets containing clean water to the lab. Larvae were categorized based on their size as large and small. The large sized Culex larvae were about 0.7 cm and the small sized Culex larvae measured about 0.2cm in length. For the present study I have used only large sized larvae (3rd and 4th instars stage). Medicinal plants used as extracts: Botanical name Common name Medical Purposes Part of plant used Ocimum sanctum Tulsi Used to treat digestive problems Young leaves Azadirachta indica Neem Kills pathogens. Used to cure skin ailments. Young leaves Preparation of Stock solution: Azadirachta indica: [Neem] I collected neem leaves from my school campus. Only young leaves were collected and dried in the absence of sunlight in the shady region. The complete method of preparing 10% stock solution of this plant extract is mentioned below. 10 grams of dried young leaves were then grinded using mortar and pestle along with methanol and dried. Then add 100 ml of distilled water to make out 10% stock solution. Then the 10% neem stock solution was decanted after centrifugation. Now from this 10% stock solution different concentration solutions in percentage were prepared [ranging from 1% 10%] i.e., 10ml of 10% stock solution in 90ml of distilled water gives 1%, 20ml of 10% stock solution in 80ml of distilled water will give 2%, 30ml of 10% stock solution in 70ml of distilled water will give 3%, 40ml of 10% stock solution in 60ml of distilled water will give 4%, 50ml of 10% stock solution in 50ml of distilled water will give 5%, 60ml of 10% stock solution in 40ml of distilled water will give 6%, 70ml of 10% stock solution in 30ml of distilled water will give 7%, 80ml of 10% stock solution in 20ml of distilled water will give 8%, 90ml of 10% stock solution in 10ml of distilled water will give 9%, and for 10% the stock solution itself was used. Ocimum sanctum: [Tulsi] I collected Tulsi leaves from my school campus. Only young leaves were collected and dried in the absence of sunlight in the shady region. The complete method of preparing 10% stock solution and the different concentration of this plant extracts in percentage was done by same method as mentioned above in Neem. 2.2. Method / Procedure Mortality of larvae using crude plant extracts: 1. The large sized Culex larvae were taken in the petridishes. 2. 5 ml of crude plant extracts of neem and tulsi were taken in the different test tubes. 3. 10 larvae were introduced in each test tube at the same time. 4. Ten trails were carried out for the two different plant extract. 5. The number of larvae killed was recorded for 1hr, 12hr and 24 hr. 6. Larvae were feed with dog biscuit powder. 7. Comparative analysis was carried out graphically between the two plant extracts at different time period. Mortality of larvae using different concentration of plant extracts: 1. The large sized Culex larvae were collected and separated in the petri dishes. 2. 5 ml of 1% Neem extract was pipetted in the test tube using a graduated pipette. 3. 10 Culex larvae were introduced and the time was noted. 4. Ten trials were carried out at the same time for different concentration. 5. The larval mortality was recorded for 12 hours and 24 hours. 6. The same procedure was followed for different concentrations [2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% 10%] of the Neem extract. 7. During this experiment the larvae was feed with dog biscuits in powdered form. 8. The above mentioned procedure was also carried out using Tulsi plant extract. 9. A comparative study of larval mortality was made by using these two plants extract on the Culex mosquito larvae. The percentage of mortality (which will give us an indication of the effectiveness of the extract) will be calculated using the following formula. Percentage of mortality = Number of dead larvaeNumber of larvae introduced X 100 2.3. Variables Dependant variable- Number of larvae killed Independent variable-Different concentration of neem extract and tulsi extract, different time period [1hr, 12 hrs, 24 hrs] Controlled variable-Number of larvae, Volume of water, Temperature, food 2.4. Hypothesis Hypothesis 1 Null Hypothesis (Ho): Neem and Tulsi have no significant the mortality of the Culex larvae. Positive hypothesis (H1): Neem and Tulsi have a significant effect on the mortality of the Culex larvae. Hypothesis 2 Null Hypothesis (Ho): There is no significant difference in the rate of mortality between Neem and Tulsi plant extracts. Positive Hypothesis (H1): There is a significant difference in the rate of mortality between Neem and Tulsi plant extracts. 3. Results 5.1 Mortality of larvae using crude plant extracts The Culex larvae were exposed to different plant extracts in crude form to study the mortality rate. The number of Culex larvae killed was recorded after 1 hour, 12 hours and 24 hours separately (Table 1). In one hour the mean number of larvae killed by Neem was 4.9 ±0.74 and for Tulsi it was 3.5 ±1.08. As time progresses the difference in effectiveness becomes less and the two extracts are approximately equal. The crude extract of Neem was more effective than Tulsi in one hour duration. At 12 hours the mean number of mosquitoes killed were 9.2 ±1.14 and 8 ±1.05 respectively. At 24 hours the Neem and Tulsi extracts showed almost the same level of effectiveness with mean values of 10 and 9.7 ±0.48 respectively. The crude form of Neem extract was significantly more effective than Tulsi in killing the Culex larvae in 1 hour and 12 hours. However in 24 hours there is no significant difference in the effectiveness of Neem and Tulsi plant extracts. 5.2 Mortality of larvae using different concentration of plant extracts: 5.2.1. Neem: The mortality of the larvae using different concentrations of Neem extract was recorded. At 1% concentration the mean number of larvae killed was noted to be 2.4  ± 0.52 in 12 hours and 3.5  ± 0.53 in 24 hours. At 10% concentration the highest mortality rate was recorded as 9.6  ± 0.52 and 10 for 12 hours and 24 hours respectively. As the concentration of the Neem extract increased, the mortality of the larvae also steadily increased (Table 2). 5.2.2. Tulsi: The mortality of the mosquitoes for Tulsi extract was recorded in the same way as Neem. At 1% concentration the mean number of larvae killed was noted to be 1.8  ± 0.63 in 12 hours and 3  ± 0.67 in 24 hours. At 10% concentration the highest mortality rate was recorded as 8.7  ± 0.67 and 9.6  ± 0.52 for 12 hours and 24 hours respectively. As the concentration of the Tulsi extract increased, the mortality of the larvae also steadily increased (Table 3). Table 1 : Mortality of larvae using crude plant extract Trail s No. of larvae killed 1 hour 12 hours 24 hours Neem Tulsi Neem Tulsi Neem Tulsi 1 5 2 10 9 10 10 2 4 3 10 6 10 9 3 5 5 7 7 10 10 4 6 4 10 8 10 10 5 4 3 8 7 10 9 6 5 4 10 9 10 10 7 6 4 9 8 10 10 8 4 5 10 9 10 10 9 5 3 8 9 10 10 10 5 2 10 8 10 9 Mean  ± S.D 4.9 ±0.74 3.5 ±1.08 9.2 ±1.14 8 ±1.05 10 ±0 9.7 ±0.48 T- test 3.38 2.45 1.96 Calculations T value= Degree of freedom = 20 -2 = 18 Level of significance= 0.05 Table t value = 2.10 Neem and Tulsi in 1 hour Calculated T value= 4.9- 3.5 / √(0.74)2 + (1.08)2 /10 = 3.38 Neem and Tulsi in 12 hours Calculated T value = 2.45 Neem and Tulsi in 24 hours Calculated T value = 1.96 Graph Showing the mortality of larvae using crude plant extract Table 2 Mortality of larvae using different concentration of Neem extracts S. No. Different concentration of Neem extract [%] Mean No. of larvae killed 12 hours 24 hours 1 1% 2.4  ± 0.52 3.5  ± 0.53 2 2% 3.2  ± 0.63 4.3  ± 0.48 3 3% 3.9  ± 0.57 5  ± 0.67 4 4% 4.6  ± 0.7 5.9  ± 0.74 5 5% 5.3  ± 0.67 6.4  ± 0.7 6 6% 5.8  ± 0.42 7  ± 0.67 7 7% 6.5  ± 0.85 7.5  ± 0.53 8 8% 7.4  ± 0.52 8.6  ± 0.7 9 9% 8.6  ± 0.84 9.8  ± 0.42 10 10% 9.6  ± 0.52 10 Graph Showing the mortality of larvae using Neem plant extract Table 3 Mortality of larvae using different concentration of Tulsi extracts S. No. Different Concentrations of Tulsi Extract Mean No. of larvae Killed 12 hours 24 hours 1 1% 1.8  ± 0.63 3  ± 0.67 2 2% 2.6  ± 0.7 3.6  ± 0.52 3 3% 3.3  ± 0.67 4.4  ± 0.7 4 4% 4.1  ± 0.74 5.3  ± 0.82 5 5% 4.8  ± 0.79 5.8  ± 0.79 6 6% 5.4  ± 0.52 6.7  ± 0.48 7 7% 6.2  ± 0.79 7.4  ± 0.7 8 8% 7  ± 0.67 8.1  ± 0.57 9 9% 7.9  ± 0.57 9.1  ± 0.63 10 10% 8.7  ± 0.67 9.6  ± 0.52 Graph Showing the mortality of larvae using Tulsi plant extract Table showing the comparative mean mortality of the larvae using Tulsi and Neem extracts Different Concentrations Mean No. of larvae Killed in 12 hours Mean No. of larvae Killed in 24 hours Tusli Neem Tulsi Neem 1% 1.8  ± 0.63 2.4  ± 0.52 3  ± 0.67 3.5  ± 0.53 2% 2.6  ± 0.7 3.2  ± 0.63 3.6  ± 0.52 4.3  ± 0.48 3% 3.3  ± 0.67 3.9  ± 0.57 4.4  ± 0.7 5  ± 0.67 4% 4.1  ± 0.74 4.6  ± 0.7 5.3  ± 0.82 5.9  ± 0.74 5% 4.8  ± 0.79 5.3  ± 0.67 5.8  ± 0.79 6.4  ± 0.7 6% 5.4  ± 0.52 5.8  ± 0.42 6.7  ± 0.48 7  ± 0.67 7% 6.2  ± 0.79 6.5  ± 0.85 7.4  ± 0.7 7.5  ± 0.53 8% 7  ± 0.67 7.4  ± 0.52 8.1  ± 0.57 8.6  ± 0.7 9% 7.9  ± 0.57 8.6  ± 0.84 9.1  ± 0.63 9.8  ± 0.42 10% 8.7  ± 0.67 9.6  ± 0.52 9.6  ± 0.52 10 Graph comparing number of larvae killed using both plant extracts in 12 hours Graph comparing number of larvae killed using both plant extracts in 24 hours T Values at Different concentrations of Neem and Tulsi extract Concentration of Neem and Tulsi Calculated t value in 12 hours Calculated t value in 24 hours 1% 2.32 1.85 2% 2.14 3.13 3% 2.16 1.96 4% 1.55 1.72 5% 1.53 1.80 6% 1.89 1.15 7% 0.82 0.36 8% 1.49 1.75 9% 2.18 2.92 10% 3.36 2.43 4. Discussion A t-test was performed for the values obtained for the comparison of the crude extracts. The t-test values for crude Neem and Tulsi extracts are effective if seeing if Neem is significantly more effective than Tulsi in a certain time period. The calculated t value for 1 hour is 3.38. This is higher than the table t value of 2.10. Hence in 1 hour Neem is significantly more effective in killing larvae. In 12 hours the calculated t value is 2.45 and therefore we can draw the same conclusion. However in 24 hours the calculated t value in 1.96 and thus there is no significant difference in the effectiveness of Neem and Tulsi. By this point it is evident that, as far as Hypothesis 1 is concerned, that both Neem and Tulsi are effective in killing mosquito larvae. With regard to the crude extract we can say that in 1 and 12 hour periods, Neem is more significantly more effective but not in 24 hours (Hypothesis 2). T-tests were also performed to compare the significant difference in mortality of Neem and Tulsi extracts at different concentrations. Separate t-tests were performed for 12 hours and 24 hours. As seen in the tables above the t-values are significant in 12 hours for 1%, 2% and 3%. They are significant as at these concentrations the calculated t values are greater than the table t value of 2.10. It is also observed in 9% and 10% concentrations in 12 hours. In 24 hours significance is observed in 2%, 9% and 10%. What these means is that for these concentrations in their respective time periods, Neem is significantly more effective than Tulsi in killing larvae. The main effect that Azadirachta indica has on larvae is the growth regulatory effect. It is because of this property that Neem acts as an excellent natural insecticide. Exposure of culex larvae to sub lethal doses prolongs the larval development and causes reduced pupal weight and oviposition. Neem works by intervening at several stages of the insects life. The ingredients present in Neem are approximately the same shape and structure of vital hormones for the insects. The larvae absorb these Neem compounds as if they were real hormones which blocks their endocrine systems. This leaves the insects so sonfused in brain and body that they cease to reproduce and thus the population plummets. Tulsi extract exhibits high mortality, especially during the molting process. The molting of larvae takes place under the influence of the ventral nerve cord neurosecretory cells. These cells release the tanning hormone. The extract may have an inhibiting effect on such cells. They may also act on epidermal cells that produce enzymes necessary for the circular oxidation process. Both plant extracts affect reproduction and inhibit the emergence of adult mosquitoes from their larvae. They also decrease the feeding time for larvae and cause less food to be ingested. This has been noted to cause a fall in the carbohydrate levels of the larvae. A study noted that the extracts cause the amount of DNA and RNA in the larvae to fall thus suggesting that the extracts may affect nucleic acid synthesis. The feeding in the larvae may have decreased due to indigestion caused by the plant extracts as they inhibit metabolic processes. [9] Both Ocimum sanctum and Azadirachta indica are available easily and in large quantities. They do not require professional handling, are inexpensive and safe which makes them very valuable as pesticides. Additionally Tulsi has properties that enable it to disinfect water. The extracts could help replace harmful pesticides used such as DDT as they are safe for non target animals and do not pose residue problems but are still effective in killing larvae and suppressing the adult mosquito population. In conclusion further effort should be taken to produce bio-pesticides from Neem or Tulsi as well as research to find other plants products that may be more ideal. UV rays may affect the Neem and Tulsi extracts thus making them ineffective so research should be done in order to find plant products that do not degrade in the presence of sunlight thus making them completely versatile. 5. Summary * The findings have important implications in the practical control of mosquito larvae, especially, in a polluted aquatic environment. * Ocimum sanctum and Azadirachta indica are the two plants out of which the extracts were prepared. * Solutions of concentrations varying from 1% to 10% were prepared from the stock solution for each plant. * Each concentration was tested on 10 larvae. 10 trials were undertaken and the results were noted. * Both plants were deemed effective as far as larval mortality in concerned. Neem extract had a slightly higher mortality rate. 6. Bibliography (Singh et al. 2000, 2004). Pest management in sericulture (2000), Properties and potential of natural pesticide against sericulture pests. Publ. Zool. Soc. India. pp. 200-206 (Singh and Saratchandra, 2002). An Integrated approach in pest management in sericulture, Int. J . Indust. Entomol. 5, 141-151 (Baskaran and Narayanswamy, 1995) Traditional pest control. Caterpillar Publications. Tamil Nadu, India. (Casida, 1983). Development of synthetic insectide from natu ral products. Case History of pyrethroids from pyrethrins. (Schmutterer, 1990). Properties and potential of natural pesticide from Neem tree. Ann. Re

Relationships Essay -- essays research papers

How have three texts you have studied enhanced your understanding of relationships? Refer to Maestro and two other texts of your choosing? Relationships are a complex part of today’s society and affect all areas. All relationships are different, and they influence the decisions made by people and others around them. The three texts ‘Maestro’ by Peter Goldsworthy, ‘Dead Poets Society’ directed by Peter Weir and ‘Goodnight Mr Tom’ by Michelle Magorian all enhance the understanding of relationships. These three texts, all show various types of relationships, are all presented in various ways. The main relationship presented in ‘Maestro’ involves the unlikely friendship developed between a teacher (Keller) and his student (Paul). The main relationship in ‘Goodnight Mr Tom’ is rather similar and involves the relationship between an elderly man (Tom) and an evacuee he was forced to take on- a young boy (Willie). Finally the main relationship exposed in ‘Dead Poets Society’ is between a teacher (John Keating) and his pupils including Neil and Todd. All of these relationships in these texts enhance ones understanding of relationships by techniques used. ‘Maestro’s’ unique technique, is not only the use of first person, but how the whole story is a combination of flashbacks and memories by the narrator Paul of when ‘he was only a child’. From this perspective, the narrator reflects back on this enchanted period of childhood and adolescence. His relationship with Keller is very cold at first, and we know this is misleading through the first line when Paul quotes ‘First Impressions? Misleading, of course. As always’. The first chapter is about Paul and Keller, and how they do not get along. Through the first line, we know that this is a false impression of their relationship and that it will improve. This line that Paul recites, generally describes all relationships. They are false on first impressions, as the person is not familiar to you. ‘Goodnight Mr Tom’ has a traditional layout, with chronological chapters, and written in third person. When Tom first meets Willie, it is an awkward experience for Tom, and a frightening experience for Willie as to Willie Mr Tom ‘was a towering giant with skin like coarse, wrinkled brown paper and a voice like thunder’. However as one continues through the book it is recognized that William Beech and his relationship with Mr.... ...es, moreover, he truly believes that he is not able to write poetry. However, John Keating neither gives him an "F" nor lets him sit down however makes Todd believe in himself. He says: "Mr. Anderson thinks that everything inside of him is worthless and embarrassing, isn't that right Todd, isn't that your worst fear? Well, I think you're wrong, I think you have something inside of you that is worth a great deal." Saying this was enough to make Todd believe that he is just as any other students of his class is able to write a poem. When individuals experience success, they grow in self-confidence and as their self-esteem grows, they will feel more comfortable to face new challenges. Weir tries to convey that sometimes to achieve that confidence, a mentor is required, someone who can bring you up when you are down. The novels ‘Maestro’ by Peter Goldsworthy, ‘Goodnight Mr Tom’ by Michelle Magorian and ‘Dead Poets Society’ directed by Peter Weir all convey various messages to enhance the understanding of relationships. Through the use of various techniques such as characterization, themes, and music, these texts emphasize the importance and value of relationships.

Ideas And Issues In “The Visit” And “A Chronicle Of A Death Foretold” Essay

Many works of contemporary literature discuss ideas and topics which are seen in the world around us today. These themes are either directly demonstrated or implied. Two works as such are â€Å"The Visit† by Friedrich Durrenmatt and â€Å"A Chronicle of a Death Foretold† by Gabriel Garcia Marquez. The issues raised in these two books are justice, communication, tradition, and moral values. Tradition is the ongoing obligation to commit to something, which is an act that has existed for many years. More often than not, tradition helps keep a community in one piece, much like laws do. In other cases, tradition obligates people and makes them do things they normally wouldn’t do. In â€Å"A Chronicle of a Death Foretold†, tradition is one of the forces that drives the Vicario twins to kill Santiago Nasar and therefore clean their family’s name. However, the Vicario brothers try to escape tradition. They had a debt which they greatly doubted and criticized. They know what the whole town expects them to do. But on the other side, their everyday life and friendship with Santiago Nasar, their victim, fills them with haste to fulfill tradition and do their pre-said duty. In â€Å"The Visit†, it’s tradition in the first place that brings the much anticipated lady Zachanassian to Guellen. So, in other words, tradition kills Ill as well as Santiago Nasar. Intertwined with the complications of tradition are the moral values behind any clearly human act. The only reason tradition has always been so difficult to adhere to is because of the moral issues behind the acts that tradition is composed of. This is seen in both pieces. In â€Å"A Chronicle of a Death Foretold†, the Vicario brothers are in a state of great misfortune not only because of the shame inflicted upon the Vicario family name but also because of the deed the have to carry out. However they also want their duty to be done. In an attempt to combine both, the twins unsuccessfully try to be caught whilst looking for Santiago Nasar. In other words, they seek someone to stop them by telling the whole town of their intentions. â€Å"†¦ ,in reality it seemed that the Vicario brothers had done nothing right with a view to killing Santiago Nasar immediately and without any public spectacle, but had done much more than could be imagined to have someone stop them from killing him, and they had failed† (p. 56). In â€Å"The Visit†, the town tries to hold its moral values despite the ironic reward the people and state will get if they do not. Later on in the book, even though Guellen has completely lost its morality and plans on doing Maddamme Zachanassian’s bidding and killing Ill, the townspeople will not admit, whatsoever that they have lost their towns values. Moreover, they blame Ill for not having any morality and tell him that if he had any values he would use a gun on himself outright. Ill, however denies the Mayor’s suggestion. â€Å"Mayor: Pity. You’re missing a chance to redeem yourself and be a more or less decent human being. † (p. 81) Tradition and the morality behind it are the two most ancient forms of justice. Today, justice is defined by laws and mainly is democratic and clear. But every person has their own form of justice for things, often acquiring either guilt or praise thereafter; or none of the two. Self-justice is reflexively self-justifying. In â€Å"The Chronicle of a Death Foretold†, the Vicario brothers want Justice. However, their morality, as discussed above, does not allow them to justify their family’s shame by killing Santiago Nasar. For the sake of tradition they kill Santiago anyway. Pablo and Pedro Vicario tell everybody they come across that they will kill Santiago Nasar, hoping to get caught.. That way, they would have done their justice and duty as the brothers of Angela Vicario, the violated girl, by attempting to kill Santiago and not actually slaying him. They do not commit a crime the do not want to commit and which they consider immoral. Also, when Santiago appears to them, the Vicario twins do not face him head on. Instead they give him a chance of escape by remaining of the opposite side of the street and giving him a head-start through their body language. Clara Zachanassian in â€Å"The Visit† loses all of her moralities during her childhood as a prostitute and thus ends up defying the right and wrong of justice. Therefore, she goes ahead and offers money for an assassination. The townspeople of Guellen try to force back their moralities but fail to do so. As a result they take an alternative route to solving their problem. They masquerade the immorality of the crime of murder as justice. What follows is that they kill Ill with their bare hands. For justice and tradition to be enforced, a clear communication line must be drawn. Communication is what leads to the smooth flow of traditions and miscommunication to their collapse of justice. Morality has to do with a person’s ability to communicate to oneself what they truly consider right or wrong; in this case it is contributed to justice and questionable traditions. Pedro and Pablo Vicario’s failure to alert the whole town of Riochacha of their imminent crime is a result of poor communication. They misinterpreted the ability of the townspeople to pass on information and the rate in which the news would diffuse their way to Santiago Nasar or to the police. However they did not take one aspect of tradition into account: â€Å"But most of those who could have done something to prevent the crime and did not consoled themselves with the pretext that affairs of honor are sacred monopolies [according to tradition], giving access only to those who are part of the drama. † (p. 114). So, according to tradition, most people in town could not tell the authorities, nor anyone for that matter, about the Vicario twins and on top of that they could justify themselves by blaming it on the town’s ethics. â€Å"Destiny makes us invisible† (Quote, Gabriel Garcia Marquez, 1928) The town of Guellen, on the other hand, had a level of communication between them far better than any other. They could communicate through the sub-conscious. It is not exactly stated that the Guelleners had actually decided upon killing Ill, so this could be assumed. They were very well organized and swift in killing Ill, as they were able to put many new products they wanted, more than needed, on account. As is clear, tradition, morality and justice are all connectable aspects which are usually bound together by a means of communication. Situations become elaborate and complications arise. â€Å"The Chronicle of a Death Foretold† and â€Å"The Visit† are two great examples of a situation that results from the combinations of those four issues.

Affirmative Action Debate and Economics

Yuching Lin ECON 395 The Affirmative Action Debate Affirmative Action has recently become the center of a major public debate in the United States, which has led to the emergence of numerous studies on its efficiency, costs, and benefits. The Civil Rights Act of 1964 and Equal Employment Opportunity Commission ended wage and employment discrimination based on gender and race, significantly decreasing the gap between minorities and non-minorities. Minorities made major progress from the 1960s up through the early 1970s due to Affirmative Action (Jones, Jr. 1985). However, for the past few decades, the progress that minorities have made in terms of income, employment and education has largely stagnated. California, Michigan, Nebraska, and Washington State have recently banned racial advantage in employment and college admissions, and Proposition 209 of California has disallowed the preferential treatment of minorities, with opponents of Affirmative Action lobbying for more widespread b ans on similar policies while supporters argue fiercely against the removal of Affirmative Action policies.As can be seen, Affirmative Action’s status in the United States now is very dynamic due to shifting court decisions and policy plans. Additionally, returns to education have been increasing in recent decades, and as a result, income inequality has also increased – the growing demand for highly skilled workers (workers with high levels of post-secondary education) and the stagnancy of American education (with the added fact that high quality colleges have become even higher quality and even more selective while lower tier colleges have decreased in quality) has led to ever-increasing wages for the highly skilled.This â€Å"Skill Biased Technological Change† has led to a widening income gap between the rich and the poor. Naturally, this considerably affects black and Hispanic minorities, who are more likely than non-minorities to be part of the working class or below the poverty line, which raises the stakes in the debate on Affirmative Action. Today, both sides on the debate can bolster their arguments with evidence provided by economic and social research on the policies. But there are additional questions to be answered – is Affirmative Action justified on moral grounds? Can we balance economic efficiency with equity?Is Affirmative Action the best policy for addressing racial inequalities? Do policies that increase diversity result in positive externalities such as reduced prejudice and indirect benefits beyond education and career success? One will discover that, after thorough analysis of research concerning Affirmative Action, it is still difficult to form a definitive conclusion on the results of the policies. Nevertheless, there is much to learn from the research that has been conducted as of present, and one can now better steer research in a direction that will uncover the real benefits and shortcomings of Affirmative Action.To begin with, the debate on the efficiency of Affirmative Action policies is still very much unsettled. Opponents claim that they actually result in several negative effects on the minorities the policies are intended to benefit, arguing that minority students admitted into overly competitive programs are more likely to drop out than mismatched non-minority students due to the increased competition, which would actually worsen the income gap since black income has been shown to decrease even more than white income after dropping out of college (Loury, 1995).A proposed â€Å"stigma hypothesis† suggests that â€Å"preferential treatment perpetuates the impression of inferiority† while simultaneously lowering incentives for high academic effort from minorities (Murray, 1994). And yet another underperformance hypothesis by Steele (1990) suggests that blacks’ academic performance suffers when they are aware that normal standards are lowered in order to accomm odate them.However, there exists no research with strong, conclusive results that support these claims – in contrast, the â€Å"race difference in graduation rates is no larger at the most selective institutions,† and blacks have been shown to benefit from the increased admission to selective universities (Holzer and Neumark, 2000). A study by Cortes (2010) on the Texas Top 10% Plan claims that the banning of Affirmative Action actually increases college dropout rates for minorities and finds that the mismatch hypothesis is inaccurate.Because quantifying the economic benefits of Affirmative Action is exceedingly complicated, comparing the total costs and benefits of the policy becomes exceptionally difficult for policy-makers. Holzer and Neumark (2000) note that university admissions policies are not necessarily economically efficient to begin with, which further complicates matters since researchers do not have a definitive point of efficiency to which they can compar e the results of Affirmative Action.Administrative costs and externalities must also be factored into the models, when economists have not yet even managed to create a viable model for the effects of Affirmative Action policies. For example, minority students in medical school are less likely to reach as high a level of expertise as non-minorities, but they are more likely to treat minority patients, generating a positive externality (Holzer and Neumark, 2000). Another point made in the debate on Affirmative Action is that diversity may improve the educational quality of a university.Many educators believe that diversity in colleges is inherently beneficial – students can learn from other students whose experiences and backgrounds give them a whole different set of views and capabilities. Several studies have actually correlated increased diversity in student bodies with improvements in issues such as racial prejudice and bias, although results vary depending on study design, extent and type of diversity, and the issue of interest (Bowman, 2010).Even so, other researchers are likely to reject such evidence since variables such as attitudes, inter-racial relations, and even school quality (as a result of increased diversity) are difficult to define and accurately quantify (Holzer and Neumark, 2000). Research has often demonstrated very unclear results, usually only weakly suggesting a few conclusions while also providing sometimes conflicting conclusions; one study on the effects of diverse student bodies found that there was no effect on post-college earnings, an increase in satisfaction with college experiences, and a decrease in community service (Hinrichs, 2011).Interestingly, a recent study in college admissions based on merit, race, and legacy suggests that the removal of race-preferential treatment may actually decrease the ability of the student body since colleges may be inclined to increase legacy-based admissions due to the current economic cl imate (Li and Weisman, 2011). However, they do also propose that there is a possibility that colleges would need to eliminate all preferences barring merit in order to produce the most-able student body.Overall, it is generally agreed that more accurate methods for measuring school quality and the quality of school inputs are necessary if more conclusive results on education differentials’ effects on unobserved skills, attitudes, and racial income inequality are to be found. While it is without a doubt that Affirmative Action increases admission and employment rates for minorities, there is much speculation as to whether it is the most effective policy. Researchers are not confident yet of how different variables interact to affect income, employment rates, and other indicators of success.As a result, one will often find seemingly conflicting data as exemplified by Card and Krueger’s (1992) findings that â€Å"5-20% of the post 1960 black gains were due to improved sc hool quality† while Smith and Welch (1989) claimed that 20-25% of black gains were a result of improved school quantity, which they asserted should be the focus of educational policies. Moreover, it is well known that employers often discriminate based on race, whether purposefully or unconsciously, and that this significantly impacts labor market outcomes.Affirmative Action can only do so much to address employment discrimination – in some models, the issue of negative racial stereotypes can be exacerbated by the application of such policies (Holzer and Neumark, 2000). In addition, some suggest targeting education inequalities in primary and secondary education as opposed to implementing race-preferential treatment in post-secondary education as a more efficient and equitable policy, although efforts such as NCLB have only slightly improved primary and secondary education inequalities.The primary and secondary education quality in the United States is in dire need of i mprovement already; high school graduation rates have stagnated, and school quality is falling behind when compared to the educational systems of other developed countries. There also exist other complicated variables that need to be addressed in order to close the income gaps between minorities and non-minorities such as the inheritance of learning abilities/behavior, ghetto culture, and the underclass (Jencks, 1993). As one can expect, research concerning controversial issues often suffers from researcher bias.Economic research typically entails numerous variables and methods in order to reach conclusions, and more often than not, results are varied and ambiguous, especially in this particular branch concerning Affirmative Action. It is a simple matter to selectively exclude certain results in order to make it appear as if a research study conclusively supports or rejects Affirmative Action as a beneficial policy, should one wish to do so. Literature searches can quickly turn up v ery obviously biased articles with weak evidence and unreasonable claims.Furthermore, past research has indicated that the types of models used in studies can have a significant impact on the results, further obfuscating the conclusions on the effectiveness of the policies. In fact, as of present, research on the policies has resulted in mostly ambiguous conclusions, although it is of my opinion that studies in general very slightly lean toward suggesting that Affirmative Action is beneficial as a whole – research studies that conclusively reject Affirmative Action as a viable policy are few and far between, and it is even difficult to find studies that demonstrate significant negative effects.In order to obtain more accurate data, researchers would optimally be able to create experimental studies with control and treatment groups, but this is very unlikely to occur due to the unethical properties of such studies. Clearly, it has become even more imperative that researchers i mprove models on the efficiency of Affirmative Action policies in order to obtain more reliable data to demonstrate with greater confidence the effects of the policy. Of course, these topics only cover the economic justifications for Affirmative Action, which is clearly also a matter of social justice.There is an endless cycle of philosophy-based debates on the policy – should we as a society aim for equity or efficiency? If we are willing to sacrifice some efficiency for equity, how much is optimal? There is also the question of whether society has a responsibility to â€Å"[remedy] the present effects of past discrimination,† which begins another entire debate about the responsibility of people today for wrongs committed by ancestors (Jones Jr. , 1985).Some also believe that Affirmative Action devalues the achievements of minorities since credit may be given to race-preferential treatment instead of to the individuals who accomplish those feats; this can lead to furt her racial prejudice and bias, possibly encouraging the continuation of racial discrimination in job employment. There are also suggestions that perhaps policies ought to focus on helping the part of the minority population with low socioeconomic status so as to avoid situations in which wealthy black students may be given preferential treatment over more qualified white students living below the poverty line.The debate over Affirmative Action for women is also just as controversial, for women also suffer from income inequality, but they still receive the same advantages that their male siblings receive. Therefore, one can argue that women are not put at a disadvantage early on in life and that they should not require preferential treatment in admissions or employment. In fact, women who benefit from Affirmative Action are much less likely than racial minorities to be lower-qualified and less-skilled, suggesting that implementing a preferential treatment policy may be inequitable in this case.Even more abstract of an argument is the claim that men and women will never reach perfect equality since they inherently desire different careers and hold differing aspirations for lifetime achievements. As can be seen, there is literally a myriad of issues that factor into the debate on Affirmative Action. The field of research concerning the topic is beset by the typical problems plaguing education and economics research – education quality and educational inputs to schools are difficult to measure, as are the effects on income, employment rates, job characteristics, etc. The lack of experimental data lends no help.The effects of nationally implemented legislation are difficult to track and quantify because of differences over time and across states (Altonji and Blank, 1999). Compiling data at a national level is also vastly time-consuming and challenging. Though neither side has conclusive evidence that supports their argument, studies that reveal tentative con clusions on the effects of Affirmative Action policies are emerging, and models are slowly approaching real-world utility. As research continues, hopefully the accumulation of data and models will allow researchers to uncover the true effects of Affirmative Action.References Altonji, Joseph G. and Rebecca M. Blank. 1999. â€Å"Race and Gender in the Labor Market. † In Handbook of Labor Economics, edited by Orley Ashenfelter and David E. Card, 3143- 3259. San Diego: Elsevier B. V. Bowman, Nicholas A. 2010. â€Å"College Diversity Experiences and Cognitive Development: A Meta Analysis. † Review of Educational Research 80(1):4-33. Card, David and Alan B. Krueger. 1992. â€Å"School quality and black-white relative earnings: a direct assessment. † Quarterly Journal of Economics 107:151-200. Cortes, Kalena E. 2010. â€Å"Do Bans on Affirmative Action Hurt Minority Students?Evidence from the Texas Top 10% Plan. † Economics of Education Review 29(6):1110-1124. D ong, Li and Dennis L. Weisman. â€Å"Why Preferences in College Admissions May Yield a More- Able Student Body. † Economics of Education Review 30(4):724-728. Hinrichs, Peter. 2011. â€Å"The Effects of Attending a Diverse College. † Economics of Education Review 30(2):332-241. Holzer, Harry and David Neumark. 2000. â€Å"Assessing Affirmative Action,† Journal of Economic Literature 38:483-568. Jencks, C. 1993. Rethinking Social Policy: Race, Poverty, and the Underclass. New York: HarperPerennial. Jones Jr. , James E. 1985. The Genesis and Present Status of Affirmative Action in Employment: Economic, Legal, and Political Realities. † Iowa Law Review 70:901-923. Loury, Linda D. and David Garman. 1995. â€Å"College Selectivity and Earnings. † Journal of Labor Economics 13:289-208. Murray, Charles. 1994. â€Å"Affirmative Racism,† In Debating Affirmative Action: Race, Gender, Ethnicity, and the Politics of Inclusion, edited by Nicolaus Mills. 1 91-208. New York: Delta. Steele, Shelby. 1990. The Content of Our Character. New York: St. Martin’s Press. Smith, James P. and Finish Welch. 1989. â€Å"Black Economic Progress after Myrdal. † Journal of Economic Literature 27:519-564.