Studying The Peach Fruit Fly: Bactrocera zonata

Studying The Peach Fruit Fly: Bactrocera zonata Abstract The peach fruit fly, Bactrocera zonata (Saunders) is one of the most harmful species of Tephritidae. It is a polyphagous species attacking more than 40 species of fruit crops and has also been recorded from wild host plants. The peach fruit fly is a serious pest of peach, guava and mango; secondary hosts include apricot, fig and citrus. It causes serious economic losses, either by direct damage to fruits or indirectly by warranting the need for quarantine and phytosanitary measures. Bactrocera zonata is native from India and is present in numerous tropical countries of Asia. However, this pest has been established in Egypt since the late 1990s and is now largely widespread throughout the country. Therefore, it demonstrated its ability to establish outside tropical climates and its adaptability to local temperate conditions. In Egypt, B. zonata is active throughout the year when temperatures exceed 10 °C and can complete several generations per year, apparently overwintering also in temperate climates. Bactrocera zonata is well adapted to hot climates and shows higher low-temperature thresholds than those of the Mediterranean fruit fly, Ceratitis capitata, which is widespread in the Mediterranean countries. Pest risk analysis suggests that the peach fruit fly is capable to establish and spread in coastal areas of the Mediterranean region, causing significant damage on fruit production. of entering, establishing, spreading and causing significant impacts on fruit production in other countries of the Mediterranean region. INTRODUCTION Tephritid fruit flies (Diptera: Tephritidae) have a major impact on world agriculture, causing yield losses and reducing the quality and marketability of agricultural crops. Control of fruit flies mostly relies on the application of broad-spectrum insecticides, which could cause food contamination, side effects on beneficials and pest resistance to insecticides. Tephritid fruit flies are among the most invasive species of fruits and vegetables in the world. Establishment of exotic flies would cause direct and indirect economic losses due to damage to fruits and  strict quarantine regulations imposed by importing countries to avoid introductions of invasive pests. The family Tephritidae, comprises nearly 4500 species distributed over most of the world and include several species that pose a potential threat to Mediterranean horticulture, mainly of the wide-ranging genus Bactrocera, native to South East Asia and Australasia, the genus Anastrepha, originated from Central and South America, and the genus Ceratitis, indigenous to Africa. The genus Bactrocera is considered a serious threat of fruit crops because of the wide host range of its species and the invasive power of some species within the genus (White and Helson-Harris 1992; Clarke et al., 2005). Several Bactrocera species established outside of their native Asian range: Bactrocera carambolae Drew and Hancock in Surinam and northern Brazil, Bactrocera cucurbitae (Coquillet) in Hawaii, East and West Africa, Bactrocera dorsalis Hendel in Polynesia and Hawaii, Bactrocera invadens Drew, Tsuruta and White in Sub-Saharan Africa and Bactrocera zonata (Saunders) in the eastern Mediterranean basin (Vayssià ¨res et al., 2008). The two polyphagous fruit flies presently established in the Mediterranean region are the Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann), the most dangerous and widespread species, and the peach fruit fly B. zonata, which has been detected in Egypt in1998 and spread throughout the country (Amro and Abdel-Galil, 2008). The peach fruit fly was intercepted at the port of Valencia in 2005 by quarantine officials on citrus fruits imported from Egypt. Therefore, a Pest Risk Assessment (PRA) was carried out by Spain and submitted to the European Food Safety Authority (EFSA) for a scientific opinion. The PRA pointed out that the peach fruit fly can establish and spread in southern Europe, causing considerable damage to fruit yield. However, the pest risk assessment can be improved by defining the potential climatic range of the pest in Europe and identifying fruit crops potentially at risk (EFSA, 2007). Bactrocera zonata is listed as Dacus zonatus in Annex IAI of Directive 2 000/29/EC, which includes harmful organisms whose introduction in EC countries are banned. In the present paper we review the life history, host range, influence of climatic factors  and provide a tentative distribution map of the peach fruit fly in the Mediterranean region along with control methods. DISTRIBUTION The peach fruit fly is native to tropical Asia and is widely distributed in Bangladesh, Bhutan, India, Indonesia (Sumatra), southern Iran, Laos, Myanmar, Nepal, Oman, Pakistan, Saudi Arabia, Sri Lanka, Thailand, United Arab Emirates, Viet Nam, Yemen. It also occurs on the Indian Ocean islands of Mauritius and Reunion (EPPO, 2005). In Pakistan, this fruit fly is abundant in coastal and sub-coastal areas of Baluchistan and Sind, and in semi-desert areas and northern plains of Punjab. However, it has also been recorded as rare from foot hills of Islamabad and Peshawar valley of North Western Frontier Province (Hussain, 1995). In Sri Lanka, this species is distributed throughout the island in wet and dry zones and has been recorded up to the elevation of 1800 m (Tsuruta et al., 1997). In the last decades, the peach fruit fly has spread westward and has established in the Arabian Peninsula and Egypt. Bactrocera zonata was identified in 1998 on infested guavas collected in Agamy and Sabahia, near Alexandria. In 1999, monitoring traps showed high capture rates in Alexandria and Cairo. In October 2000, the pest was detected in North Sinai and is at present widespread in all the fruit-growing areas of Egypt (EPPO, 2008). California has been invaded multiple times (1989, 2001 and 2006) by the peach fruit fly, but it has been successfully eradicated (EPPO, 2005). LARVAL HOST RANGE The peach fruit fly has been recorded infesting over 40 cultivated and wild plant species, mainly those with fleshy fruits (Table 1). In Pakistan, B. zonata is a serious pest of guava, mango, peaches, papaya, persimmon and citrus. Damage of 25-50% has been reported in guava, of 10-15% in mango and of 40% in persimmon (Syed et al., 1970; Qureshi et al., 1992; Stonehouse et al., 2002). The relative susceptibility of the most common cultivated fruits in New Valley Oases (Egypt) was determined in field on the basis of adult emergence from infested fruits. Sour orange appeared to be the highest susceptible host, followed by orange and guava, whereas mandarin, apple, mango and fig were more resistant/showed some sort of resistance (Amro and Abdel-Galil, 2008). In Egypt, the highest number of pupae and the highest percentage of adult emergence were recorded under laboratory conditions from pear fruits, followed by guava, peach, apple and apricot (Shehata et al., 2008). Bactrocera zonata seems more adapted to attack citrus fruits than C. capitata. In fact, in 2002/2003 at Fayoum Governatorate (Egypt), the two species infested 15.5 and 0.35% of Navel orange, 10.0 and 0.9% of grapefruit, 8.7 and 3.7% of mandarin, 5.7 and 3.4% of sour orange, 0.6 and 0.3% of lemon and 0.6 and 0.3% of Valencia orange, respectively (Saafan et al., 2005). Restrictions by overseas markets are inevitable if research funding actions show that the peach fruit fly is established in Mediterranean countries. LIFE HISTORY The peach fruit fly is anautogenous, i.e. it emerges from puparia as sexually immature adult that needs to feed to survive and reproduce. Adults obtain sugars from honeydew  and other plant exudates, protein from bird feces and phylloplane bacteria and moisture from dew and rain. Adults are attracted by some plant-derived phenyl propanoids (e.g., methyl eugenol), that might play a role in the mating behaviour. Mated females pierce the skin of host fruits with their ovipositor and lay a batch of 2-9 eggs. The eggs usually hatch in a few days and the young larvae feed upon the fruit pulp destroying the fruit. Tunnels created by larval feeding also allow the entry of secondary pathogens causing secondary fruit rot. The mature larvae leave the fruit and pupate in the soil where they emerge two weeks later as young adults. Bactrocera zonata is a non-diapausing and multivoltine species with overlapping generations. In Pakistan and Egypt, adults are present throughout the year except in January and February (Hussain, 1995; Farag et al., 2009). Overwintering mostly occur in the larval or pupal stage. Adults a strong flier, capable of dispersing more than 24 km in search for host plants (Qureshi et al., 1975). Passive dispersal is mainly by means of winds and transportation of infested fruits. Adults live for 30-60 days and the pre-oviposition period (including sexual maturation of 8-16 days, ranges from 10 to 23 days. A female can lay up to 93 eggs/day, and as many as 564 in its lifetime (Qureshi et al., 1974). Under favourable conditions, the eggs hatch into larvae within 2 days. The larvae feed in the fruits for 4 to 30 days, depending on temperature (Duyck et al., 2004). Mature larvae burrow 2.5 to 12.5 cm in the ground to pupate. The pupal period varies from 4 days in summer to over 6 weeks in winter. Full development takes from 5 to 8 weeks, depending on the season and type of fruit infested (Shehata et al., 2008). The most important parameters influencing the population dynamics of B. zonata are the favourable environmental conditions for reproduction and survival, and host sequence, suitability and availability. Several generations per year are completed under favourable conditions. In Pakistan, the peach fruit fly complete 8-9 generations per year in the coastal plains, whereas only two generations are completed in 5 months in northern areas (Hussain, 1995). At Giza Governatorate (Egypt), seven overlapping generations were recorded from March to November; the first generation is the longest, occurring from March to May-June, whereas summer generations lasted 4-6 weeks. Populations are usually at their lowest level at the end of the winter due to the slowdown or cessation of development. It may take several generations are needed to reach the highest population density, which was observed during the 5th generation at the end of August (Farag et al., 2009). Influence CLIMATIC FACTORS AND OF HOSTS Climate plays a critical role as the determining factor of the peach fruit fly abundance, influencing development and survival, therefore limiting its geographical range. The wide distribution of B. zonata indicates a considerable degree of environmental plasticity. Although the immature stages of Bactrocera sp. can survive short periods of high (>30 °C) or low temperatures ( The temperature is the most important factor determining developmental rates of immatures and adult maturation rates. The duration of the peach fruit fly lifecycle is mainly affected by temperature and host fruit species. Development ceases in all stages below 12 °C; larvae and pupae are more resistant to cold weather conditions. The developmental thresholds of pre-imaginal stages of a peach fruit fly population in Reunion were determined at constant temperatures. Lower thresholds of eggs, larvae and pupae ranged from 12.6 to 12.8 °C, which were higher than those of C. capitata (10.2-11.6 °C). The thermal units required for the development of pre-imaginal stages were estimated in 224 degree day units (Duyck et al., 2004). However, in Egypt, the lower temperature threshold was determined as 11.84 °C and the thermal units required to complete a generation (from egg to egg) were 487 degree days (Sharaf El-Din et al., 2007). Differences on lower developmental thresholds might be due to the different strains and the larval food. However, the existence of cold-hardening ecotypes of the pest can not be ruled out. The upper temperature threshold was estimated as higher than 35 °C (Qureshi et al., 1993; Duyck et al., 2004). The optimal temperatures for development and survival of pre-imaginal stages occurs at 25-30 °C. The duration of the pre-ovipostion period ranged from 23 days at 20 °C to 8.4 days at 30 °C. Fecundity and adult longevity were optimal at 25 °C (Qureshi et al., 1993). Reliable temperature thresholds and thermal constants appropriate for each life stage allow the development of phonological models to predict the duration of the life cycle of the peach fruit fly under various climatic conditions. On the basis of thermal units, expressed as cumulative degree days, a number of 6, 7 and 8 annual generations have been predicted in North Sinai, El Beheira and Asyout (Egypt), respectively (Khalil et al., 2010). Host quality strongly affects development time and survival of pre-imaginal stages and the reproductive parameters of adults. Peach, guava and mango were the most suitable fruits for larval development and fecundity with respect to other fruit species (e.g. apple, pear, plum, orange) (Hussain, 1995). Climatic factors and host suitability influence coexistence of tephritid fruit flies in some areas. The peach fruit fly was detected in Reunion in 1991 and appears to be displacing C. capitata in warm and dry areas. Ceratitis capitata and B. zonata attack almost the same fruit species, indicating that species niche partitioning is determined by climatic factors rather than host range (Duyck et al., 2008). The peach fruit fly showed displacement ability also over B. dorsalis and Carpomyia vesuviana Costa in some areas of its native geographical range (Agarwal and Kapoor, 1986). POTENTIAL GEOGRAPHICAL DISTRIBUTION IN THE MEDITERRANEAN BASIN The potential distribution of the peach fruit fly in the Mediterranean basin has been modelled/predicted with CLIMEX. Based on climatic data, this software compares the geographical distribution of a species in the native area and predict its potential geographical range in other continents using the Compare Locations function (Sutherst et al., 2007). The model combines a weekly population growth index (in response of temperature, rainfall and relative humidity) with 4 stress indices (cold, hot, wet and dry) into an Ecoclimatic Index (EI), which indicates the potential propagation and persistence of the species as determined by climate. A database of 30-year climatic data for meteorological stations irregularly located in the Mediterranean basin was used. Climatic parameters used were modified from available data of other tephritid fruit flies (C. capitata and B. dorsalis) (Vera et al., 2002; Stephens et al., 2007), also considering the climatic requirements of B. zonata (Duyck et al., 2004). Then, values were adjusted to fit the distribution of B. zonata in Egypt. To provide a more realistic prediction of the pest range, the Irrigation option in CLIMEX was used. Figure 1 shows a tentative distribution map of B. zonata based on Ecoclimatic Index. Under current climate conditions, the model predicts the establishment and persistenc e of the peach fruit fly in coastal areas of North Africa and Near East. The suitability of European countries to B. zonata establishment was limited to southern areas of Portugal, Spain, Greece and all the main Mediterranean islands (Balearic Islands, Sardinia, Corsica, Sicily and Crete). The potential geographical distribution of the peach fruit fly appears to be narrower than that of C. capitata, which is more adapted to cool temperatures. Moreover, the predicted range of B. zonata seems to coincide with most of the Mediterranean citrus-growing areas. CONTROL METHODS Biological control of the peach fruit fly is ineffective, because young larvae feed into the fruit flesh and are protected from parasitoids. The most common hymenopterous parasitoids recovered from B. zonata in the native area are the braconid Diachasmimorpha longicaudatus (Ashmead) and the eulophid Aceratoneuromyia indica (Silvestri) (Kapoor 1993). In Egypt, Dirhinus giffardii Silvestri (Hymenoptera: Chalcididae) and the pteromalids Spalangia cameroni Perkins and Pachycrepoideus vindemiae Rondani have been recorded on peach fruit fly pupae (Badr El-Sabah and Afia, 2004). Recently, biological control efforts have been focused on augmentative release of D. longicaudatus and Fopius arisanus (Sonan) (Hymenoptera: Braconidae) (Rousse et al., 2006). Bactrocera zonata males are attracted to citronella oil and to its active compound methyl eugenol (Howlett, 1915). This parapheromone, which is present in many plants, has both olfactory and phagostimulatory action and attracts peach fruit fly males from up to 800 m (Roomi et al., 1993). Methyl eugenol proved to be very effective in early detection of peach fruit fly males and has been used in several suppression programs (Qureshi et al., 1981; Sookar et al., 2006). The male annihilation technique (MAT) employs methyl eugenol to attract most of the males of B. zonata populations. Extermination of males in a population severely reduces the frequency of fertile matings, minimizing the chances of successful reproduction and consequently lowering the infestation on fruits. Peach fruit fly males are caught/killed by plastic traps baited with methyl eugenol (mass trapping technique) or attracted to wooden blocks soaked with parapheromone and insecticide (attract and kill technique). MAT is the standard technique to eradicate the peach fruit fly from areas newly-invaded areas and has successfully been applied in several eradication programs (California, Israel) (Spaugy, 1988; EPPO, 2008). A large eradication program based on the massive use of bait stations (wooden blocks) has been very successful in Egypt: B. zonata populations have been reduced about 4-fold from 2008 to 2009 in all the countrys fruit-producing areas (FAO/IAEA, 2010). A number of insecticides used against fruit flies are effective, flexible and low toxic to non-target arthropods. In the European Union, chemicals registered against the medfly include organophosphates (chlorpyrifos-methyl and phosmet) and pyrethroids (lambda-cyhalothrin and deltamethrin). In addition, some naturally-derived insecticide are accepted in organic agriculture, such as spinosad, that is less toxic to beneficials than traditional insecticides, and a Neem formulation/azadirachtin, that showed sterilant and oviposition deterrent activities on the peach fruit fly (Mahmoud and Shoeib, 2008). All these compounds are non-systemic, therefore control treatments are targeted to kill adults and prevent egg-laying in the fruit. Bait applications integrate insecticide and attractant formulations to lure male and female adult fruit flies. The most effective control strategy worldwide against fruit flies consists in bait sprays of malathion mixed with hydrolysed protein acting as attractants and phagostimulants. However, malathion has recently been excluded from the list of plant protection products allowed in the European Union, which has also prohibited importation of fruits with malathion residues. Laboratory experiments carried out in Egypt showed that spinosad might effectively replace malathion in bait applications against the peach fruit fly (El-Aw et al., 2008). Bait insecticides are sprayed in spots on the foliage of host plants by ground or aerial applications. Studies have been carried out to control B. zonata with the sterile insect technique (SIT) (Qureshi et al., 1974), that is widely used in eradication programs against C. capitata and B. dorsalis. However, this technique has never been adopted in the field against the peach fruit fly. The establishment of the peach fruit fly in Mediterranean countries would prevent export of fruits and vegetables to countries with quarantine regulations or be made conform to their rules and restrictions. Fruit fumigation with methyl bromide is still adopted in several countries, but its use may soon be prohibited. Therefore, alternative fruit sanitation techniques based on temperature manipulation have been developed. Cold treatments consist in holding export products at constant temperatures for a time period sufficient to ensure death of the most resistant peach fruit fly life stages (eggs and larvae). Alternatively, fruits can be disinfested with high temperature treatments (water dips, dry or vapour heat, forced hair). Heat treatments can cause fruit injury and alteration of colour, aroma, flavour or texture in some citrus fruits. CONCLUSIONS The host-plant range of the peach fruit fly is broad, with more than 40 plant species verified as hosts in ; therefore, potential hosts are abundant in the diverse, cultivated and uncultivated flora of Mediterranean region and pose the eventuality of peach fruit fly population cycling. This cycling is characterized by different host-plant species sequentially serving as fruit fly reproductive hosts for parts of the year. Given the lack of diapause in this frugivorous tephritid and its wide host range, population cycling in alternate hosts could play a major role in the potential establishment of Bz and future economic depredations of exotic fruit flies such as the peach fruit fly in Mediterranean region. Peach fruit fly is a generalist tephritid species infesting many host species throughout the entire geographical range. Locally these generalists may utilize only a few of their potential host species. However, no absolute statement about plant susceptibility can be made. A good host in one geographic location may not be as good a host in another, and vice versa, as slight environmental changes may occur that influence the plants desirability as a host. In addition, it is important to analyze the plant species in a given area to identify the competing host range. A desirable host in one area may be less desirable in another because a better host exists. The population dynamics of such tephritid species are also susceptible to fluctuations in community attributes, i.e., plant diversity, interspecific interactions, and abiotic factors. These allow such tephritids to become pestiferous in some areas, but barely noticeable in other areas, or subject them to localized extinction in still other areas Rapid transport of infested host fruits through cargo, personal luggage, and mail has complicated efforts to contain peach fruit fly within its present distribution. Efforts should be made to improve exclusion, prevention, detection, and control practices against peah fruit fly, with the aim of decreasing the risk of introduction. Since eradication efforts can be extremely difficult and expensive when peach fruit fly populations become well established, such efforts are started as soon as possible after introductions are detected. Crop yield reductions, control measures, handling processes, and quarantine restrictions on commodity movement are expenses associated with peach fruit fly infestations. Appropriate phytosanitary measures should be applied to avoid the invasion and establishment of these exotic pests in the Mediterranean region. We believe that Mediterranean countries can no longer ignore the inevitability of recurrent peach fruit fly populations. The Mediterranean countries must prepare to deal with the eventuality and consequences of permanent peach fruit fly populations. Economic importance Impact of peach fruit fly on agriculture Peach fruit fly can have a direct impact on agricultural production in Mediterranean area. One estimate of the direct impact of peach fruit fly in Egypt was million euros, which did not include the costs or impacts of insecticide use to control this pest. A great number of crops in the Mediterranean countries are threatened by the introduction of this pest: including apple, apricot, peach, fig, grapefruit, nectarine, orange, peach, pear, persimmon, plum, pomegranate, tangerine. While the direct loss of production of fruit fly host products can have a significant impact on Mediterranean agriculture, perhaps a more important impact is the loss of potential production and markets due to the threat of fruit flies and the high economic costs for their control. A Streetcar Named Desire, Tennessee Williams | Analysis A Streetcar Named Desire, Tennessee Williams | Analysis A Streetcar Named Desire From time to time in life, there are periods when one is faced with conflicts and more often, it does not matter how hard one tries, you just cant fix things and you end up feeling like a broken record. A Streetcar Named Desire focuses on an inconsolable woman called Blanche Dubois. Blanche is a victim of herself and her lifestyle as much as she is the victim of an unfair state of affairs. There are occurrences in her life that she could have handled better ad therefore avoided calamity, but there are as well instances where, there was nothing she could do but play along to the tragic up folding events in her eventful life. First she is nurtured in Old South upper-class traditions, she lived in a classy manner in the family homestead Belle Reve, wedded a man she immensely loved, and followed a professional career as an English teacher. From the beginning of the play, it is forthcoming that she is the victim of her lifestyle, and not a conqueror. The individual Blanche is at present can be covered back to a solitary day in her epic past. Inside only some hours for the duration of this single day, her life would be altered completely. Blanche unexpectedly but walked in on her companion, Allan Grey, in bed having intimacy with another male. She afterwards went to a bar to have a drink with her cheating spouse and his homosexual partner; there she drunkenly told Allan that she was sickened by him. Allan flees the room in serious embarrassment from Blanches utterances and turns a revolver he had on his mouth, she hears him commit suicide in the exterior of the bar they were drinking. Any person would be unba lanced after so mucch pandemonium and distress in such a short period. Argument is fronted that since Blanche had inferred to Allan as disgusting, he committed suicide and this makes Blanche the aggressor and not the victim she almost paints herself to be. Allans deeds towards his suicide were totally his and Blanche could not manage to prevent them. It is obvious that neither of the couple could grip the confusion manifesting at the time and handled them in divergent ways. Blanche was just the fatality of the awful state of affairs that affected the love of her life. Without her dearly loved Allan, Blanche ultimately needed love. All the men Blanche would charm in seduction were because she wanted to mend the emptiness in her heart. This was however not the truthful way to manage affairs and if she had gotten help she could properly have dealt with the pain of her husbands tragic demise. Unfortunately Blanche never had that chance, when she loses her familys plantation, Belle Reve, she is forced to live in Laurel, where she engages in prostitution for the reason that she has no other way of making money to help fend for her personal upkeep. During this tumultuous period, she resides in hotel Flamingo and men seeking sexual pleasures in exchange for money come up to her room every nighttime. Promiscuous sexual relations with men got terribly out of control out of hand. Every time one sexual relation ended, a new one budded the next day. This made her to cement a lousy reputation in the small township of Laurel, Mississippi. Understanding that she was still smarting from the demise of her suicidal husband and acknowledging that the various men could not patch up her inconsolable heart, she turned to drinking to escape her misery. Haphazard alcohol drinking and one-night stands eventually makes Blanche to find herself lonely and with nowhere to go. In order to improve her miserable life and acquire a new character, Blanche makes a decision to begin afresh in Elysian Fields, New Orleans with her young sister, Stella and her bad-mannered husband Stanley Kowalski. Feigning innocence and perfection, to cover up her inadequacies back home is not sufficient as Stellas husband can see right through her. Stanley exposes her precedent behavior and devastates the fresh life she has embarked on in New Orleans she again is back where she began. Blanche is victim to Stanleys insensitive mistreatment. Not oblivious to the truth that they had not once got along, had Stanley not exposed her secrets, she might just have brilliantly started a fresh, improved life. Only to worsen her life further, she becomes the victim of serious sexual assault to the churlish Stanley. If she was not mentally and emotionally unbalanced minded before, Blanche is absolutely now. Stanley was crooked and should not have handled her the way he did, while she was obvi ously in such an unselfconfident shape. Due to her disturbing past and no prospects to seek healthy help, Blanche succumbs to mistreatment and becomes the victim to additional situations than she had to all through the routes of her life. In the closing stages of A Streetcar Named Desire, Blanche is taken to mental establishment where it is only hopeful she may get the necessary assistance to her physical, emotional and mental state. She has suffered too much and respite is necessary for her soul.

Ucla Econ 101 Final Spring 2011

1 Final Exam (VERSION 1): Econ 101 †¢ Please write your name at the top of every page of this mideterm †¢ Please write your name, TA’s name, and the time of your discussion section here Your Name: TA’s Name: Discussion Time: †¢ The exam has one parts: Written Questions. †¢ There should be 16 total pages (front and back). Quickly read through the exam before beginning. †¢ There are 100 total points available. Point values are listed next to each problem part. Please allocate your time accordingly 1 2 Written Questions 1. Consider the following payo? matrix Player L M T 2, 0 3, 1 Player 1 C 3, 4 1, 2 B 1, 3 0, 2 2 R 4,2 2,3 3,0 . (5pnts) Find the pure strategy Nash equilibria of the simultaneous game b. (5pnts) Now suppose the game is played sequentially. Find the subgame perfect equilibrium if player 1 goes ? rst and if player 2 goes ? rst. c. (5pnts) Discuss whether each of the players would want to go ? rst or second. d. (5pnts) Write down a sy stem of equations such that the solution to the system would give a completely mixed strategy equilibrium of this game (please clearly de? ne all of your notation). Can this system of equations be solved? (Hint: think about the condition requiring player 1 to play B with positive probability).Explain what the answer means. 2 WORK SPACE 3 WORK SPACE 4 2. Suppose Player 1 and Player 2 are playing a simultaneous move game with the following payo? matrix: Player 2 L R T 0, 4 ? , 3 Player 1 B 3, 3 4, 6 where ? ? 0 a. (5pnts) De? ne a dominant strategy equilibrium. Is there any value of ? for which there is a dominant strategy equilibrium. If so, ? nd the values of ?. If not, show why. b. (5pnts) Describe all the pure and mixed strategy equilibria of the game as a function of ? c. (5pnts) Suppose ? = 5. What would the outcome be if the players could cooperate? 5 WORK SPACE 6 WORK SPACE 7 3.Billy has just inherited a horse ranch from his uncle. The ranch is located in Oshkosh, WI and rents horses. A unique feature of the stable is the nearby riding trails that overlook Lake Winnebago. Billy has two types of potential customers: novice riders (N) and serious riders (S). The (per customer) demand for horse rides on the ranch is qS = 75 ? 1. 25PS , where qS is the number of hourlong rides a serious rider makes per year. The demand for novice riders is qN = 57 ? 1. 25PN . Assume there are 75 riders of each type in the town. Billy’s cost function is T C = 12q, where q is the total number of hours the horses are ridden per year. . (5pnts) Suppose Billy does not price discriminate. Find prices, quantities, and Billy’s pro? t. b. (5pnts) Suppose Billy can tell who’s a serious rider because of the types of hat they ware. Find the 3rd degree price discriminating prices, quantities and pro? ts. c. (5pnts) Suppose Billy is not able to tell the di? erence between the two types of rider. He decides to start charging a yearly membership fee, T , as well as an h ourly price, p. Find the optimal choices of T and p d. (5pnts) Suppose Billy IS able to tell the di? erence between the two types of but still thinks the 2-part tari? is a good idea.Find the annual fee and per hour price that Billy would charge to each group 8 WORK SPACE 9 WORK SPACE 10 4. (16pnts) Boeing and Airbus are the 2 ? rms that produce commercial aircraft. The demand for airplanes is given by: Q = 10 ? P . Boeing’s costs are given by T CB = cB qB and Airbus’ costs are given by: T CA = cA qA where cA , cB are constants. a. (5pnts) Find the Cournot quantities, prices and pro? ts. Find Stackelberg quantities, prices, and pro? ts assuming Boeing chooses output ? rst b. (5pnts) Suppose that right now cB = cA = 5. Boeing has access to a process innovation that will lower marginal costs from 5 to 0.How much would Boeing be willing to invest to implement the innovation. (Assume Cournot Competition from here on) c. (5pnts) Suppose that the innovation is such that Airbu s can (imperfectly) copy it, so if Boeing makes the investment Airbus’ costs fall to 2. How much is Boeing willing to pay now? d. (5pnts) If Airbus can perfectly copy the innovation, how much would Boeing be willing to pay? Why is Boeing willing to pay a positive amount? 11 WORK SPACE 12 WORK SPACE 13 5. There are two types of people in the world Sky Divers and Cat People. Both types have wealth W = 100 and utility functions U (W ) = ln(W ).Both types of people can have an accident that leads them to lose $50 of wealth. Sky Divers are riskier and have accidents 75% of the time, while Cat People have accidents only 25% of the time. The proportion of Sky Divers in the economy is pS and the proportion of Cat People is pC = 1 ? pS a. (5pnts) How much would each type be willing to pay for an insurance policy that fully reimbursed them in the event of an accident? b. (5pnts) Write down the equations that, if you solved them, would give the amount each type would be willing to pay f or insurance that covered half their losses? . (5pnts) What is the fair price of (full) insurance for each type (i. e. if an insurer knows which type he is dealing with)? What is the fair price if the insurer cannot distinguish the two types? d. (5pnts) Assume insurers cannot distinguish the two types and that insurance markets are competitive so prices are the fair prices. Describe prices and who is insured in equilibrium as a function of pS e. (5pnts) Discuss the meaning of adverse selection in the context of this example 14 WORK SPACE 15 WORK SPACE 16

Euthanasia Paper - 1906 Words

Euthanasia: Is it moral? The term euthanasia comes from ancient Greek and it means â€Å"easy death† (Merriam-Webster Dictionary). Compared to the ancient times in which this word originated, it seems much harder in today’s society to achieve this epitome of a good death. In the ancient times, people died due to diseases that doctors could not cure, and their lives were ended earlier because it was considered cruel to watch a person die a slow and painful death. Today, thanks to the great advancement of technology, more and more diseases are becoming easier to cure and create a better living environment for the person affected. However, there are still many patients who have incurable diseases and disorders that disallow them to have a†¦show more content†¦Another important question that is repeatedly debated about with euthanasia is does it devalue human life? When putting the arguments for the affirmative and the negative side by side, one would see that euthanasia does in fact d evalue life. It deteriorates society’s respect for life because people could in theory pretend to be extremely sick and then have a doctor legally kill them. With the acceptance of euthanasia, society also accepts that some lives, as in those who would be candidates for euthanasia, are values less so than others, or the healthy and strong people in the world. As said earlier, there are two types of euthanasia; involuntary and voluntary. With the acceptance of voluntary euthanasia, there would be a slippery slope that would undoubtedly lead to involuntary euthanasia and the slaying of people who are considered to be objectionable. Then there is also the true thought that euthanasia may not actually be in the patient’s best interests. The patient could ask for euthanasia too prematurely, and if they are killed and the doctor realizes something could have been done, the blame would be placed on that doctor. Additionally, how would the government’s role in euthanasia play out? Does the government have the right to tell people who are deemedShow MoreRelatedResearch Paper on Euthanasia2709 Words   |  11 PagesResearch Paper on Euthanasia Paper Presented to Professor TABLE OF CONTENTS Introduction†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..1 Eight Arguments to Consider†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦2 The Right to Die†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦2 Patient Suffering†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦....3 Slippery Slope to Legalized Murder†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..4 Hippocratic Oath and Prohibition of Killing†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.5 Government Involvement†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..5 Palliative Care†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Read MoreEuthanasia Research Paper1614 Words   |  7 PagesMarilyn Viruet Euthanasia Would one rather save a life, or save themselves? Can someone’s life be that bad that they would ask someone to help end it? Euthanasia is an act that happens rarely. Nearly 1 in 5 doctors who care for seriously ill and people reported that they had been asked, on one or more occasions, for assistance in speeding a patients death, either by writing prescriptions for lethal drugs or delivering a lethal injection. (http://www.nytimes.com) Euthanasia is the terminationRead More Argumentative Paper: Legalizing Euthanasia1728 Words   |  7 Pagesdeath is a desired alternative to living in agony. Euthanasia has been a topic of debate since antiquity, and both sides stand firm on their beliefs. The right to choose death is illegal in most countries. I believe in people’s freedom to do what they please with their own bodies. The basic right of liberty is what America was founded on. Euthanasia should be a legal option. It’s important to start by understanding the different types of euthanasia. Allowing someone to die is, â€Å"Forgoing or withdrawingRead MoreArgumentative Paper Euthanasia2132 Words   |  9 PagesShould Euthanasia be legalized? Because of remarkable advances in medical technology pharmacology that can artificially prolong a patient’s life, the field of medical ethics has been confronted with a new controversy: the legalization of euthanasia and physician assisted suicide. The word Euthanasia comes from the Greek word for â€Å"eus† which means godly or well, and â€Å"thanathos† which literally means death (F.A. Davis Company, 2001, p. 476). Before its contemporary use, the word euthanasia meantRead MoreEuthanasia Position Paper - Against Euthanasia2246 Words   |  9 Pageskilling, euthanasia; whatever you call it or however we justified it is killing by all means. Euthanasia is a practice of ending a life to release an individual from an incurable disease or intolerable suffering. It is an action which brings intentional death to a patient. In the case of the elderly cancer patient, the family and the patient does not know whether or not to commit euthanasia. The author response in this case, is that the elderly cancer patient should not go for euthanasia, since sheRead MorePro Euthanasia Paper2072 Words   |  9 Pagespatient; it is the patient who takes the initiative. It also does not giver permission for a person to commit suicide; actually suicide is legal in most jurisdictions currently. Families will not be allowed to take the initiative to administer euthanasia, nor will anyone other than the patient seeking it. If the patient is not in a competent, unaltered state of mind they will not be able to receive the assistance in their suicide. Also, if it were to be legalized, a misconception is that it willRead MoreVoluntary Active Euthanasia Essay1010 Words   |  5 Pagesmorally permissible? Voluntary Active Euthanasia is a controversial subject, Does one have the right to end their own life? According to Peter Singer in â€Å"Voluntary Euthanasia: A utilitarian Perspective,† Voluntary Active Euthanasia is morally permissible under certain circumstances. If and only if certain requirements are met by certain parties can the process of voluntary active euthanasia be completed. Certain situations where Voluntary Active Euthanasia is morally permissible include; mentalRead MoreEuthanasi Voluntary Active Euthanasia, Passive Euthanasia And Physician Assisted Suicide1143 Words   |  5 PagesAmerican Heritage Dictionary euthanasia is defined as the art or practice of ending the life of a person or animal having a terminal illness or a medical condition that causes suffering. Euthanasia should be a individual choice to end a patient s life. This keeps them from going through excruciating pain due to an incurable disease. Some people think euthanasia should be out of the picture while others inquiry the effectiveness of these actions. With effectiveness, euthanasia is classified in threeRead MoreThe Issue Of Legalizing Voluntary Euthanasia1429 Words   |  6 PagesIntroduction Euthanasia refers to a practice whereby an act is intentionally carried out with the purpose inducing death . It is usually seen in light of inducing death to patients who are terminally ill or may not be terminally ill but are suffering from unbearable pain . The focus of this paper is on voluntary euthanasia, namely, euthanasia carried out upon the request of a patient deemed competent enough to make such decisions . This paper will argue the importance of legalising voluntary euthanasia toRead MoreEuthanasi An Ethical Way899 Words   |  4 Pagescomforting way. This paper will use the background of euthanasia, and talk about many of the controversial viewpoints to support the thesis that euthanasia is an ethical way to end a life. Euthanasia is defined as the intentional killing by act or omission of a dependent human being for his or her alleged benefit. The most important word in the definition is that the act or omission was intentional. If the cause of death was unintentional then the act wasn’t in fact euthanasia. There are three

Illegal Immigration and Crime - 2981 Words

Illegal Immigration Introduction The relationship between illegal immigration and crime is an extremely controversial and politically fueled issue. Both immigrations and crime are perceived as threats to public safety and illegal immigrants are easy targets for blame by society. This holds true in he City of Costa Mesa and in Orange County as a whole. Specifically, the Costa Mesa Police Department and the Orange County Sheriff Office has implemented policy to check the immigration status of individuals arrested for serious crimes. This policy has an affect, most notably, on the large Hispanic community living in Costa Mesa and the greater Orange County area. Many community social services agencies are caught in the middle of†¦show more content†¦Traditionally enforcement of this section in California has been left in the hands of federal Immigration officers and not a function of local law enforcement officers. Representative Christopher Cox, a Newport Beach Republican and chairman of the House Select Committee on Homeland Security, had a proposal to have Orange County Sheriff officers be among the nation’s first local law enforcement officers trained to enforce federal immigration laws. This plan immediately began a controversy. The city of Costa Mesa City Mayor Allan Monsoor urged the city council to authorize the city’s police officers to obtain the federal training necessary to enforce immigration. The city council approved this training in a 3-2 vote which made Costa Mesa the first city in the country to go in this direction. Ruben Navarrette, Jr., a member of the editorial board of the San Diego Union Tribune reports that while Mayor Monsoor is trying to calm fears of immigrants by saying he is only interested in police going after those people who are â€Å"criminal offenders† or people suspected of wrongdoing that goes beyond entering the country illegally. This is too includes gang activity. Mayor Monsoor reportedly states he insist that there won’t be any sweeps or raids on employers and that police will not beShow MoreRelatedImmigration : Amnesty Or Amnesia1305 Words   |  6 Pages Immigration: Amnesty or Amnesia Immigrants cross the American border with hope of a better life so; the subject of illegal immigration is greatly debated topic in the United States. With all things considered illegal immigrations affects everyone. These undocumented people can be a neighbor, a waiter, or even a housekeeper. The controversy behind illegal immigrants is whether or not they should be reprimanded for violations of immigration laws. According to the Arizona Sentinel Newspaper, illegalRead MoreImmigration And The United States986 Words   |  4 PagesImmigration in the United States continues to increase rapidly year by year. According to an analysis of monthly Census Bureau data by the Center for Immigration Studies, the immigration population in the United States, both legal and illegal, hit a record of 42.1 million in the second quarter of this year, an increase of 1.7 million since the same quarter of 2014 (CIS.org). Clearly, Immigrants make up a large part of the population in the United States, an d for most immigrants, migrating to theRead MoreHow Immigration Affects Native Born People1694 Words   |  7 PagesImmigration has always been a very debated topic, with some people pointing out the opportunities different countries offer immigrants and the people on the other side of the spectrum highlighting the way immigration affects native born people. During the campaign period for the 2016 election, it was clear that candidates Hillary Clinton and Donald Trump had different views. Clinton sought to be more â€Å"humane† and mindful when reforming immigration policies and Trump sought to quickly remove the badRead More The Pros and Cons of Illegal Immigration into the United States797 Words   |  4 PagesThe Pros and Cons of Illegal Immigration into the United States Illegal immigration has been an important and serious issue for decades; which affects everyone, both Americans and immigrants themselves. Illegal Immigration has three main purposes: first to find a better life in the ?promise land?, second: free healthcare, and third: for criminal activity. Most illegal immigrants come to America with the best intentions for themselves and/or their families, but many others have alternativeRead MoreEssay on Why should the U.S have border patrol?1611 Words   |  7 PagesBorder Patrol: Why should the U.S have border patrol? Illegal immigrants have always been a problem in the United States for some time now. â€Å"In October 2008, the illegal immigrant population stood at 11.9 million according to the Pew Hispanic Center† (Illegal Immigration Facts Statistics†). An efficient border patrol in our country would be a good step in the right direction to stop illegal immigration and the effect it has on our country. Illegal immigrants are at fault for such things as smugglingRead MoreIllegal Immigrants And Illegal Immigration1710 Words   |  7 PagesIllegal Immigration in the US What does illegal immigration mean to a hardworking, middle class worker providing for a family of four? What does illegal immigration mean to someone who is getting jobs taken right underneath them from illegal immigrants that are willing to work the same job for a lower paycheck? Illegal immigration is an epidemic occurring in the United States of America, the land of the free (to the legal citizens). There are many reasons why immigration is harmful and in some casesRead MoreIllegal Immigration : The United States Of America1197 Words   |  5 PagesJorge Romo Ms. Thompson Junior English 2nd Hour February 28, 2017 Illegal Immigration in American The United States of America is one of the greatest countries on this earth. Since the day it was founded, many men and women died while building this country into the nation it is today. But there is a problem that threatens America today and it is illegal immigration. The definition of an illegal immigrant is a foreigner who enters the U.S. without proper authorization. Especially a person who crossesRead MoreIllegal Immigrants : Illegal Immigration1627 Words   |  7 PagesIllegal Immigration in the US What does illegal immigration mean to a hard working, middle class worker providing for a family of four? What does illegal immigration mean to someone who is getting jobs taken right underneath them from illegal immigrants that are willing to work the same job for a lower paycheck? What does illegal immigration mean to someone who is in need for a job? Illegal immigration is an epidemic occurring in the United States of America, the land of the free (to the legal citizens)Read MoreThe Cost of Illegal Imigration Essays1560 Words   |  7 Pagesto keep thriving as the great nation we are. The struggle I speak of is not immigration but illegal immigration. Illegal immigrants have caused a struggle politically, in the government and have affected you even in your own schools and work. We must rectify the immigration system to help our predicament because the effects of illegal immigration may surprise you. One of the largest disadvantages of allowing illegal immigrants in our country is the cost. They take great sums of money away fromRead MoreThe Immigration Act Is A Defining Moment That Changed Us Immigration Policy877 Words   |  4 PagesThe 1965 Amendment to the Immigration Act was a defining moment that radically changed US immigration policy and provided the basis for all that we have witnessed today with its far reaching consequences. Before 1965, the national origins quotas, which heavily favored British, German, and Irish immigrants, was replaced with a less discriminatory system (Hatton, 2015). Many decades following the enactment of this law saw a dramatic rise in the total number of immigrants, and an equally dramatic switch

Climate Change Essays - 1637 Words

Once an uncommon term used only by scientists and climatologists, the notion of Global warming today is commonly heard but very misunderstood. One might ask, what exactly is global warming and should we care? According to What is Global Warming? in LiveScience, global warming is a gradual increase in the temperature of Earths surface and atmosphere, that has become a world-wide environmental issue.1(Lallanilla,2013) Similarly, this topic is one of great controversy because of widely differing opinions on current global warming rates and the impact by humans.This suggested anthropogenic activity creates carbon dioxide, methane, and other gases that are released by the burning of tropical forests and fossil fuels, powering plants, heating†¦show more content†¦According to the Journal of Petroleum Science and Engineering, The use of fossil energy produced 23.8 billion tonnes of carbon dioxide (CO2) in 1996, and is estimated to substantially increase global temperature during th e next 50-100 years.(Kessel,2000) Despite scientific evidence and data supporting the relationship between carbon dioxide emission and climatic consequences, the impact of global warming is still greatly disputed. To further understand this topic, one might benefit by analyzing this problem from a religious perspective. By doing this, one might understand why some people choose to agree or disagree with the implications of global warming. According to the case study entitled On the Ethics of International Religious/Spiritual Gatherings the impact of global warming and climate change involve ethical elements such as carbon foot printing, that are addressed by political leaders, businesses, and religious organizations in an effort to address environmental challenges. It was not until recently that religious leadership expanded their concerns from poverty and violence, to the well-being of the ecosystem, especially anthropogenic activity on non-human life. Also mentioned in this case study is the fact that more and more religious institutions and organizations are incorporating ecology into their lessons,Show MoreRelatedClimate Changes And Climate Change Essay1458 Words   |  6 PagesAbstract: Climate is inherently variable. Climate changes from place to place and it varies with time. The world now faces one of the complex and important issue it has ever had to deal with: climate change. Climate change today is one of the biggest concerns of human beings on the planet and the effects of climate change are undeniable and it may cause environmental, social, and economic threats to the planet. We already know and easily can highlight several signs of climate change. They are: risingRead MoreClimate Changes And Climate Change1016 Words   |  5 Pagesâ€Å"Climate change is a reality that is happening now, and that we can see its impact across the world† (Haddrill, 2014) Climate change is the changes in the pattern of the climate due to natural and human activities that has been used inappropriately. Climate is defined as the â€Å"average weather† (Calow, 1998) for a particular region. Climate change is the human activities that affect Earth’s climate by using the human activities inappropriately that leads to the warming of the Earth. There are varietyRead MoreClimate Changes And Climate Change1081 Words   |  5 PagesThe concept of climate change has been around for quite a while. The earliest mention of climate change dates back to the 19th century. Swedish scientist, Svante Archenius was the first scientist to study the effect of CO2 on climate. (Rodhe et al 1997) The Intergovernmental Panel on Climate Change (IPCC) defines climate change as â€Å"A change in the state of the climate that can be identified (e.g by using statistical tests) by changes in mean and/or the variability of its properties and that persistsRead MoreClimate Changes And Climate Change935 Words   |  4 PagesClimate change is one of the most important challenges of humankind in this century. The ability to adapt, mitigate and reduce carbon emissions will be decisive to preserve the world for future generations. The last IPCC report has provided more evidence regarding the rise in temperature and sea level. Apparently, additional 2 °C above the pre-industrial average temperature levels is unavoidable, and it will continue at that level due the accumulation of gases in the atmosphere (Solomon 2009). ClimateRead MoreClimate Changes And Climate Change1817 Words   |  8 Pageshear the words â€Å"climate change† what comes to mind? Probably weather and the change s. Many of us watch the news or use an app on our cellphones/electronic devices to keep an eye on the weather for the day, week, or even the month. But, there is actually a difference between weather and climate. Weather is actually â€Å"the changes we see and feel outside from day to day. It might rain one day and be sunny the next. Weather also changes from place to place† (Dunbar, 2014). Whereas â€Å"climate is the usual weatherRead MoreClimate Change Is The Change923 Words   |  4 PagesClimate change is the change in earth’s climate like temperature and precipitation over a particular region. Climate change has shown its affect all across the globe and is leading to all undesirable loses. Some of the reasons of radical climate changes are: †¢ Irresponsible activities of humans like misuse of fossil fuels, polluting water bodies and use of non-renewable sources †¢ Burning of fossil fuels like coal and oil are rising the levels of carbon dioxide in the air. Climate change is not onlyRead MoreClimate Change Is A Change1482 Words   |  6 Pages Climate change is a change in global or regional climate patterns. Climate change is a topic that is brought up in many different genres of conversations. Whether it be brought up and discussed in politics, school, family, or friends, some people still limit using those words when in casual conversation. Some of those same people are the people who still deny that climate change is happening. Climate change affects every single one of us. It affects everyone who lives on this earth every day andRead MoreThe Change Of The Climate Change1184 Words   |  5 Pages The world continues to spin and spin, and we’ve always heard about the condition of the climate. We hear about the changing levels of CO2 in our atmosphere and the Earth’s population contribution to the rise of it. No one usually stops to think about how the food production systems for the food we eat is also a contributing factor to the rise of CO2. â€Å"I turn my life upside-down, start biking to work, plan t a big garden, turn down the thermostat so low I need the Jimmy Carter signature cardiganRead MoreClimate Change3273 Words   |  14 Pages1. Introduction Scientific evidence of the world’s changing climate is unequivocal. The expected impacts of the changing climate are likely to adversely affect the well being of all countries and particularly the poorest countries, some of which are in Africa. The changing climate has been manifested in the form of: increased severity and frequency of droughts; floods and storms; water stress, coastal erosion, and higher incidence of vector borne diseases among others. The resulting declines inRead MoreClimate Changes And Climate Change Essay1656 Words   |  7 Pages Climate change is defined by the Intergovernmental panel on climate change ( IPCC) as a variation in the mean state of climate persisting for an extended period of time typically decades or longer while the United Nations Framework Convention on Climate Change (UNFCC) defines climate change as a change in the climate which is attributed directly or indirectly to human activities that alters the composition of the global atmos phere and which is in addition to natural climate variability observed

To what extent did Thatcher achieve her aims in foreign policy Free Essays

When Margaret Thatcher first came to power in 1979 she had little interest in foreign policy but focussing mainly on economic and domestic policy. However, it was an area where she left a huge impact on. One of Thatcher’s aims was to increase the defence for Britain as she believed the USSR was a massive threat militarily. We will write a custom essay sample on To what extent did Thatcher achieve her aims in foreign policy? or any similar topic only for you Order Now This meant improving relations with the USA. Her views on Communism helped with this as her and Ronald Reagan both shared the same ideas. She also believed NATO was vital to British and European defence and so to strengthen this relationship was important. She supported NATO’s decision to deploy US nuclear cruise and Pershing missiles in Western Europe and permitted the US to station more than 160 cruise missiles at RAF Greenham Common, even though she knew it would trigger mass protests by the Campaign for Nuclear Disarmament. Relations improved with the US when Thatcher permitted US F-111s to use Royal Air Force bases for the bombing of Libya in retaliation for their apparent bombing of a Berlin nightclub; this decision wasn’t very popular with the British citizens. Another one of Margaret Thatcher’s aims was to reassert Britain’s position as a major power. Many people will say she achieved this because of the Falklands War. In April 1982, Argentina ordered the invasion of the Falkland Islands and South Georgia which were under British control at the time. She successfully retook the islands back by setting up a War Cabinet and dispatching a naval task force against them which in June they surrendered. Even though 255 British soldiers died and the attack on an Argentinian cruiser which sunk and killed everyone on board, people were far more distracted by the victory which took place. This helped her win the 1983 elections. However, she was strongly criticised as to why she didn’t pay attention to the Falklands’ defence that led to the war, in which she could have stopped happening. This in turn would have saved the lives of the British soldiers and the people on the Argentinian cruiser. Some people may disagree that Thatcher achieved the aim to raise Britain’s status entirely because of the Grenada incident. On October 1983, the USA attacked Grenada; a member of the Commonwealth, without consulting Britain to take-over a Marxist organisation. This was an embarrassment for Thatcher because it showed her weakness to defend countries which were once members of the Commonwealth who felt they still needed to be defended. Thatcher also wanted to see the defeat of Communism, which some people argue was achieved and that her role played an important part. She was able to build a working relationship with Mikhail Gorbachev who came to power in the Soviet Union in 1985. This placed Britain in a good position to be the peace-maker between the US and the Soviet Union. They ended up meeting a couple of times which led to the agreement to scrap all intermediate-range missiles from Europe, the elimination of tactical and battlefield nuclear weapons and conventional forces. After that many countries in Eastern Europe experienced their own revolution which led to domestic changes and an end to the Soviet domination over them. This was a victory for Britain and all the other NATO countries. Although this aim was achieved, Thatcher feared that because many changes were happening across Eastern Europe, Germany would start to reunify and become strong again which would affect the European balance of power and Thatcher didn’t like this. After discussing the aims of Margaret Thatcher in Foreign Policy, I believe on the whole she achieved them. She managed to reassert Britain’s position as a superpower because of the Falklands war. It was a massive turning point for Thatcher and a defining moment in her premiership which helped her stay in power by winning the 1983 election. Even though many people died during the Falkland’s War, she was considered a highly talented and committed war leader by many people. She also helped defeat Communism by building a relationship with the Soviet leader and making discussions between the US and the Soviet Union easier. This led to nuclear disarmament which helped with Britain’s fear of Russia attacking them. How to cite To what extent did Thatcher achieve her aims in foreign policy?, Papers

Bodas De Sangre Essay Example For Students

Bodas De Sangre Essay Word Count: 1124, de Federico Garcia LorcaFederico Garcia Lorca nacio en la provincia granadina de Fuentevaqueros el dia 5 de junio, 1898. Crecio rodeado de las influencias Arabes y gitanas de su querida ciudad andaluza y su amor por el mundo artistico se revelo desde muy temprana edad (Espana pg148). En 1919 llego a Madrid para estudiar en la universidad tambien fue aqui donde Lorca empezo a escribir sus grandes obras. Lorca vivio un corto tiempo en Nueva York y de esta estancia viene Poeta en Nueva York. Lorca se preocupaba por los negros de N.Y., los homosexuales, y las mujeres frustradas bajo el peso de valores tradicionales, esto se ve en muchas de sus obras (Espana pg148). la homosexualidad de Lorca se manifestaba en sus obras, otro aspecto que lo separa de los demas. Lorca vivio durante el regimen fascista del General Franco y bajo este regimen murio. Es creido que fue asesinado porque sus obras inspiraban nacionalismo. El estaba consciente del concepto patriotico en la obra teatrica, y utilizaba sus obras en contra de los izquierdistas fascistas aunque Lorca nunca participo activamente en la politica. El crimen fue cometido al empezar la Guerra Civil y se debio a odios politicos,. El tenia una manera unica para dar una vision poetica de las cosas y de la vida. Escribio desde lo tradicional, Romancero gitano, hasta surrealismo, Poeta en Nueva York, y en todo triunfo. Sus obras teatrales mas conocidas fueron Bodas de Sangre, Yerma, y la casa de Bernarda Alba. Los elementos principales de sus dramas son las pasiones profundas, la frustracion del amor pasional, el odio y la liberacion de los deseos carnales (Espana pg148). La obra Bodas de sangre es una historia que perfectamente ilustra estos elementos principales. En la obra los personajes, excepto uno, no tienen nombre sino que se les refiere por sus designaciones relacionales, la Madre, la Novia, la Suegra, el Novio, y el Padre de la Novia, excetera. Leonardo es el unico personaje con nombre en la obra y ha su esposa se le refiere como la mujer de Leonardo. La historia es una que contiene varias partes: unos enamorados, una boda, y una deuda se sangre. Primero El Novio obviamente esta comprometido con la Novia a la cual pide y se van a casar. El Novio es hijo unico de la Madre, despues de la muerte de su hijo mayor quien murio tratando de vengar a su padre, de lo cual el Novio sabe muy poco. La Novia es hija unica y vive con su padre porque su madre esta muerta. Entre el Novio y la Novia hay algo que los separa, el la quiere mucho pero ella parece solo tenerle carino. Ella realmente siente una pasion enfermiza por Leonardo quien fue su novio antes de que se casara con la prima de la Novia. Leonardo quiere a la Novia y parece que no se casaron solo por cuestiones de familias aunque sigue queriendo a la novia y se le declara esto a ella el dia antes de la boda. Lo que el Novio ignora es que su padre murio, al igual que su hermano, a manos de la familia de Leonardo y aqui es donde esta el problema de la deuda de sangre y honor. El novio y la novia se casan pero el dia de la boda Leonardo va y de nuevo habla con la novia y mientras el novio esta pensando que ella se fue a recostar porque se sentia mal ella se fuga con Leonardo en un acto de pasion. Esto no fue algo planeado sino que los dos se dejan llevar por sus sentimientos y se fugan para poder amarse. Cuando el Novio se entera en la fiesta la Madre quien por proteger a su unico hijo no le habia contado nada sobre lo de la familia de Leonardo ahora se siente humillada y le ordena venganza para limpiar su honra. El sale tras los fugitivos quienes ignoran lo que el destino les tiene preparado. .ucfb0ddabd2238675b10aca91be943174 , .ucfb0ddabd2238675b10aca91be943174 .postImageUrl , .ucfb0ddabd2238675b10aca91be943174 .centered-text-area { min-height: 80px; position: relative; } .ucfb0ddabd2238675b10aca91be943174 , .ucfb0ddabd2238675b10aca91be943174:hover , .ucfb0ddabd2238675b10aca91be943174:visited , .ucfb0ddabd2238675b10aca91be943174:active { border:0!important; } .ucfb0ddabd2238675b10aca91be943174 .clearfix:after { content: ""; display: table; clear: both; } .ucfb0ddabd2238675b10aca91be943174 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .ucfb0ddabd2238675b10aca91be943174:active , .ucfb0ddabd2238675b10aca91be943174:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .ucfb0ddabd2238675b10aca91be943174 .centered-text-area { width: 100%; position: relative ; } .ucfb0ddabd2238675b10aca91be943174 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .ucfb0ddabd2238675b10aca91be943174 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .ucfb0ddabd2238675b10aca91be943174 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .ucfb0ddabd2238675b10aca91be943174:hover .ctaButton { background-color: #34495E!important; } .ucfb0ddabd2238675b10aca91be943174 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .ucfb0ddabd2238675b10aca91be943174 .ucfb0ddabd2238675b10aca91be943174-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .ucfb0ddabd2238675b10aca91be943174:after { content: ""; display: block; clear: both; } READ: Play Essay Es aqui en el tercer acto que toma acabo una conversacion entre el Novio y una mendiga representativa de la muerte quien le dice por donde irse para encontrar a la pareja. Esta escena y otra entre la luna y la mendiga estan llenas de simbolismos hermosos y lenguaje exquisito, y vivido. Despues de la busqueda lo inevitable sucede y los tres se encuentran cerca de el rio, es aqui donde ambos Leonardo y el Novio mueren. En la parte final hay un encuentro entre la Madre y la Novia en donde la Madre se encuentra en su casa lamentando la muerte de su hijo en una manera extrana, casi como si estuviera sin un peso. Ella dise que ahora ya no se tiene que preocupar cada vez que su hijo salga como lo hacia antes. Entre esta conversacion con la vecina entra la Novia que viene a explicar sus actos y que pide que la maten porque esta deshonrada, no en cuerpo porque aun es pura, pero en espiritu. Este enfrentamiento de nuevo utiliza imagenes vividas que hacen que el lector realmente entienda lo que ella siente. Hacia queda la obra con palabras hermosas que declaran el dolor de una madre y el dolor de la Novia, una sufre por un hijo muerto la otra por una pasion que la separo de el amor de un hombre bueno y que la marco como deshonrada. Esta obra es un mar de simbolismos desde las imagenes recurrentes de flores hasta el cuchillo. Es una obra el la cual el destino es lo que uno llama lo que es incontrolable lo que manipula el pasado, el presente, y el futuro de toda persona. Bodas de sangre es una obra basada en esto, lo imprevisto lo que nadie sabe y lo que nadie puede cambiar. Desde el principio asta el final el lector sabe lo que pasara pero el protagonista no. Cada uno es guiado por una fuerza poderosa que los hace reaccionar de tal manera y aunque el espectador sabe que ellos se estan equivocando los protagonistas estan cegados por su orgullo, sus creencias, sus infelicidades y sus terquedades. Cada uno de los protagonistas estan marcados por el destino, cada uno tiene cierto final que desconocen. Tambien es obra en la cual se explora la cuestion de quien es el personaje trajico, El Novio, La Novia, o Leonardo? quien tuvo el defecto trajico e incontrolable, quien logro que el lector lo admirara y por lo tal le causara terror o tristeza cuando murio. Esta historia es muy realista en sus descripciones y circunstancias. Su lenguaje esta banando con frases poeticas y musicales, realmente es una obra de arte y fue un real placer para mi leer la.