We Wear the Mask By Paul Laurence Dunbar Essay Example | Topics and Well Written Essays - 500 words

We Wear the Mask By Paul Laurence Dunbar - Essay Example This paper will present an analysis of the poem highlighting its meaning and some of the devices used by Dunbar to enhance the theme he developed throughout the poem. From the title of the poem, We Wear the Mask, Dunbar introduces the theme that he wishes to discuss in his poem. In the first stanza, he highlights that the mask they wear serves to help them smile, and deceive the world that they are happy. The same mask serves to keep away their cheeks and eyes from the worlds closer analysis. However, beneath the mask, they are suffering intense pain and grief because of the â€Å"human guile† mentioned in line 3 of the first stanza. Evidently, Dunbar speaks in reference of African Americans suffering from the exploitation of slavery and other evils perpetrated by slave masters hurting the slaves. Despite their suffering, they mask their true feelings and pretend that they are content with the situation just as it is (Dunbar). The second stanza begins with an ironing tone because Dunbar asks why the world should make efforts of being â€Å"over-wise†. This is a pure irony because Dunbar makes it look like considering the grievances of African Americans is going overboard in the realm of wisdom. In his opinion, the world should only remain wise enough to be able to see their smiling faces because they wear the mask. This means that the world will never recognize the deep suffering experienced by the African Americans and will always consider them satisfied with their position as slaves. This also brings in the aspect of racism and the negative effects suffered by the minority groups specifically the African Americans. Although they are discriminated against, they are not allowed to voice out their suffering or even their ideas. In the last stanza, Dunbar highlights that African Americans seek intervention from Jesus Christ, who is the only one who can perceive their true suffering. On the other hand , the world never recognizes their cries

Management in context Essay Example | Topics and Well Written Essays - 1250 words

Management in context - Essay Example 1).† I have noted that the explanation presented by the author for the unique theory makes it all common sense in management practice. I find the author’s labels on the third theory as a proactive one suitable, because it brings up a new way of establishing the link. I concur with the author that in management practice, accumulated academic knowledge can be used as an engagement tool rather than applied as a theory. Case studies are used to expose how a proactive theory can work when managers engage academic knowledge within their management practice activities to improve their performance (Ghoshal, 2005; pg. 1). The case studies shows how scholarship applied together with academic theory in the management practice of inquiry is relational and provides opportunities for evidence based management. The implication of my observations is in relation to the fact that using a proactive approach in management practice creates a link between academic theory and relational skills of managers. Surprises in JA 2 The author has taken an in – depth analysis of how the application of management theories affects organizations business culture. I can observe that according to the author, business schools have enhanced the development of such management theories. ... am surprised with the author’s comments that academic research, which studies the conduct of organizations and management, has generated serious negative effects on the practice of management. I am also surprised that the author seems to be suggesting that graduates from business schools lack common sense of moral responsibility. The author has used the pretense of knowledge and the application of system – based gloomy vision to explain his assertions (Ramsey, 2011; pg. 82). The observations I have made in this article has serious implications in relation to the belief that business schools ought to teach excellent management theories and should not be blamed for negative aspects of business culture. The Evidence The author has used Mike’s learning and Kieran is learning to show the application of academic theory within management practices. The two articles show three elements of academic theory when engaged in management practice (Ramsey, 2011; pg. 12). The ele ments revealed in the learning’s include â€Å"an engagement with ideas, a practice of inquiry, and an emphasis on moment-by-moment relating within practice (Ramsey, 2011; pg. 23)†. The writer has used suggestions from other authors to show that the most significant aspect of this link pertains to the place of the evidence that is applied in the academic theory. The writer quotes other authors to strengthen his arguments for the application of evidence-based management. This management approach places decision-making initiatives on evidence that can be gathered and assessed. The author argues that action analysis tool known as Provocative Theory Cycle of Inquiry is critical to the engagement approach in the practice of management. The author has presented information that the pretense of knowledge

Just like Helen Keller Essay Example for Free

Just like Helen Keller Essay Marketing new services that will enhance existing organizations must be carefully thought out and planned to be considered a needed addition to any organization. Companies which have been founded on principles of ethics and quality services, ensure that every additional service provided to the many existing services must meet the expectation of each customer that is serviced. Team B has begun to target the process of marketing the expansion of processing packages that are undeliverable within the Fed Ex organization. Instead of returning the packages to place of origination, or re-delivering packages after an additional delivery failure, a process specifically geared to contact the person for whom the package is meant, will be the newly planned addition to the existing services which Fed Ex provides. Learning Team B will focus on reviewing the existing organization, providing a more detailed description of our LT goals in this process, review the importance to our success in planning and executing the idea, provide a SWOTT analysis on the project, and will develop a marketing strategy in order to be successful with this new process. Providing a consumer friendly service will give Fed Ex further success in the industry of package delivery to all consumers; both within the U. S. and Internationally. In today’s fast paced, high competition and deadline driven environment millions of people turn to FedEx Corporation everyday to get packages to the desired destination because of the assurance and commitment behind the name. FedEx Corporation was built upon providing top of the line innovative solutions and it continues to be an crucial part of the FedEx the overall culture and business strategy. FedEx Corporations commitment has been an instrumental part in the overall development of products, ideas and services that have given FedEx’s customers the ability to grow their businesses around the world. What is known as FedEx Corporation today, was originally introduced in 1971 as FDX Corp, and since their inception has engineered the shipping and logistics industry and has set the mark over and repeatedly, for all others in the business to meet. Since its beginning, FedEx Corp has been seen in the public eye as a leader in the transportation and logistics industry. The FedEx Corporations ability to collectively work together through their different entities demonstrate the leadership and foresight of the trusted FedEx brand. It is this loyalty which brings customers to FedEx every day. â€Å"FedEx provides customers and businesses worldwide with a broad portfolio of transportation, e-commerce and business services. FedEx Corporation offers integrated business applications through operating companies competing collectively and managed collaboratively, under the respected FedEx brand. † (FedEx Corporation, 2009). With a marketplace that is always changing FedEx Corporation is always putting forth full effort to be on the forefront of technology and to bring new and innovative ideas to maximize their profits and customer choices. FedEx currently handles an â€Å"averaged 3. 4 million† a day and delivers to over 213 countries† (E-Logi, 2009). Even in a hard international economical time, many Customers are increasingly seeing the value of using FedEx to reach new markets, grow their businesses and cut inventory carrying costs. The global economy is expanding steadily, particularly the manufacturing sector, giving our business more opportunities to grow in the future. (FedEx Corporation, 2009). As one can tell FedEx Corporation is a trend setting and revolutionary business force which continues to be on the forefront of innovation due to its ability to focus on the customer, ability to make tough decisions and always absolutely positively delivering on its promises. Federal Express is a global leader in getting packages to consumers. Business consumers already enjoy services like a hold feature for important packages and documents. This service is designed for the organization that ships a large number of packages and documents to regular business partners or employees. Employees and partners can retrieve their package from the closest sorting facility by having a hold placed on any or all incoming packages. Federal Express notifies partners and employees via pre-recorded voice mail that their package is available for pickup at the location nearest them. The service that is being contemplated is a kiosk idea, where customers business or individuals can send packages or documents, as well as pick them up all in an automated system that is based on the needs of the consumer. Undelivered packages and documents will be retained with in the kiosk, and consumers can pickup their delivery. This will be offered in a few different manners. Customers can log into the web site and obtain a pin number for the package, or it can be e-mailed or an automated voice mail can be sent to a cell or land line telephone. Customers whom do not want deliveries to be sent to there place of residence can have the option to have this become their primary way of receiving anything shipped by Federal Express. People in a specific delivery area will have the ability to ship and receive their packages and documents using the same kiosk based on geographic and delivery area. The kiosk will be totally automated and open twenty four hours a day, based on customer needs. Marketing is defined as the strategy-allocating resources (time and money) in order to achieve the objectives of (a fair profit for supplying a good product or service). The economy uses tactics to get buyer’s attention in order to gain maximum success. â€Å"Marketing is the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large† (American Marketing Association, 2008, p. 1). Marketing is vital to any organization in meeting the needs and wants of the consumers and if the marketing department is not focusing on meeting the needs of the consumers, stakeholders or vendors, the organization will not be successful. Marketing helps the organization develop a plan, collect data on the target population, examine and explore areas of the organization that will improve services to his or her customers in order to provide top quality services. FedEx marketing department has decided to explore the problem of holding customers package when they are not home to receive these packages. With the current system, customers can pick up their packages at the nearest Kinko’s FedEx store, but in order to know if the package is there for pick up, the customer would need a tracking number then have internet access to see if the package is there for pick up but many times, the package is not there before the driver finishes his or her route, therefore, FedEx has decided to incorporate a kiosk system. This system will create a faster tracking system and enhance the quality of service provided to the consumers, vendors and stakeholders. The marketing department will create services that would fit the lifestyles of the consumers, by understanding demographics, psychographics, cost and time in providing a new service as well as if the new service will be beneficial to the consumer. Without a clear understanding of the importance of marketing in the success or failure of the organization, misrepresentation of marketing can have consumers going to the competition because of getting their needs better met with faster turnaround services, better customer service and overall, top quality management. Strengths of reputation and organizational processes of Federal Express now known as, Fed Ex are what they have worked hard to create. Companies which have the focus of excellence usually have the proper organizational values in a progressive environment. Weaknesses within Fed Ex are between the past upper management decisions to categorize delivery drivers as independent instead of employees of Fed Ex. In 1998, 203 drivers filed a lawsuit against Fed Ex, citing they were paid as independent contractors instead of regular employees with benefits. (1) This class action suit would cause competitors to think Fed Ex has less sensitivity to employee requests for better benefits and more importantly working relationships within the company. Opportunities may present of growth within a company for in-house middle management and upper management. Promotions are readily available to the employee who shows they are working toward the growth of the company. Threats may be exhibited in ways which show habits that are representative of carelessness and lack of ethical behaviors of employees. Intrusion of thieves which may attempt to sabotage or rob delivery persons of packages delivered is another type of external threat. Any action which causes the inability to provide the services for which the company is known for may be categorized as a threat. Major mistakes, poor decision making skills, package losses, or failure to deliver on time are all errors which represent key threats to an established business such as Fed Ex. Of these threats they are known as internal and external threats. Trends may be what a company starts and is shown throughout the city, state or world as a mainstream guide for other companies in similar fields of service. Other companies may begin to show the public how a stable company works; as a level of standards. As a company which is known for delivery, productivity, quality improvement techniques and reputation, Fed Ex is a trend setter. Analysis of the plans of a package holding process will aid with deliveries that cannot be delivered after the second attempt. This is an opportunity for Fed Ex to stand out from among the other delivery services. Creating a personalized processed to contact the recipient until located will cut costs with returned item shipping, in addition to up-building of customer services. Marketing research can be a quantitative or qualitative process. Quantitative research would be conducting surveys to the consumers. Qualitative research includes focus groups and observational studies. The best marketing research approach for our service would be a qualitative approach. It is the less expensive approach and a more efficient way of getting feedback from the consumer for our particular service. Marketing research follows the guidelines of the scientific process. The research project for this particular process is a 24 hour automated Kiosk for Fed Ex customers to send and receive packages based on their own needs. The next step would be to collect primary and secondary data about the new Kiosk service. Then we can perform qualitative research by use of observational studies, by picking a sample of Fed Ex customers to test the new Kiosk service. From the observational studies, we can then compile the data on how the customers reacted to the new Kiosk service. Once we have all this data we can then summarize our findings and determine whether or not this idea is feasible for Fed Ex. The market research process leads us to our marketing strategy for the new Kiosk service. A good marketing strategy includes a target market and marketing mix. Our target market would be adults over the age of the 18, and our marketing mix would include the 4p’s: product, price, place and promotion. References American Marketing Association. (2008). Marketing definitions. Retrieved January 22, 2009 from http://www. seologic. com/ E-Logi (2009). E-longi. net FedEx corp. Retrieved January 6, 2009, from http://www. e-logi. net/index. php? ID=696 FedEx Corporation (2009). FedEx Corporation investor report. Retrieved January 5, 2009, from http://ir. fedex. com/releasedetail. cfm? ReleaseID=259392 http://www. fedexdriverslawsuit. com/ (1) Retrieved Feb. 8, 2008 http://www. fedex. com/Dropoff/start? locale=en_US Retrieved 2-7-09

Issues With Energy Conservation And Sustainability Environmental Sciences Essay

Issues With Energy Conservation And Sustainability Environmental Sciences Essay Traditional sources of energy (coal, natural gas, and nuclear power) consumption present a plethora of issues related to conservation and sustainability. From a conservation standpoint, a reliable access to reasonably priced energy has long been the lifeblood of developed societies. Growing populations in impoverished nations strive for this reliable access at equally low or even more reasonably priced levels. These levels must factor in use, generation, future demand, cultural issues, growth, and a variety of other concerns. Beyond conservation, sustainability issues are also complex. The generation and use of these reliable energy sources bring about sustainability concerns for climate change, acid rain, air pollution, oil spills, strip mining, hazardous waste generation, occupational diseases, radioactivity, and a variety of other adverse environmental consequences. This section will explore the current prevalent uses of energy and the conservation and sustainability issues related to them. In terms of energy consumption, each American consumes (demands) 6.5 gallons of oil per day to heat homes and run our electrical equipment. One means by which Americans can consume less is to make the existing consumption more efficient. Recent estimates indicate that approximately 1/3 of the energy consumed per day is wasted. Turning to the supply side of the equation, coal provides 52%, nuclear energy 20%, and natural gas 16% of the conventional energy usage in the United States. There is a lot of room for energy conservation that would not necessarily require compromising lifestyles. Demand-side management involves promoting techniques that increase energy efficiency. For example, driving 55 miles an hour, turning down the thermostat from 68 to 65, and implementing equipment that is more efficient would certainly enhance energy conservation measures while generating a comparable quality of service by using less energy, thereby freeing up supply. Supply-side management involves seeking new methodologies to provide reliable low priced energy sources to consumers. Problems are involved with both sides of the equation. Social and cultural norms must be modified, a difficult proposition indeed, to manage the demand side of the equation. The supply side of the equation is equally demanding. Most notably, coal used for electric power generation provides a reliable, readily accessible, and low priced fuel source. Yet, hand-in-hand with this economic advantage is the often-unrecognized social problems of air pollution, ecosystem disturbance, and contribution to climate change. Nuclear power, initially thought to be a more environmentally palatable alternative to coal and natural gas, does provide a comparable source from the supply side of the equation. Further, if pervasively implemented, it was believed to also satisfy most of the demand side of the equation. However, there are only about 110 plants operating in the United States and no new plants have been constructed since the mid-20th century. With such promise from both the supply and demand side of the equation, why has nuclear power failed to live up to its lofty expectations? The answer lies in the potentially adverse health, safety, and environmental problems and perceptions associated with nuclear power generation and use. Three primary problems accompany the use of nuclear power generation. These three concerns must be addressed before nuclear power can achieve its real potential. These problems include meltdowns, waste management, and terrorism. Further, the heavy governmental subsidies that were initially invested in nuclear power are no longer available. Moreover, heavy governmental subsidies have been replaced with even heavier governmental controls and regulation. The use of nuclear power represents a social gamble. Estimates of cancer-induced fatalities from meltdowns have ranged from zero (Three Mile Island) to 500,000 for Chernobyl. However, people die from coal generation and pollution. On a lives-lost-per-kilowatt hour basis, nuclear power stacks up equally well to coal production. Yet it is the perception of a potential loss that stacks the deck against nuclear power. In addition, disposal of high-level waste and low-level waste from these facilities, in tandem with the NIMBY philosophy toward waste disposal siting exacerbate an already difficult problem. Finally, the public perception that nuclear reactors could somehow become terrorist weapons, in conjunction with public distrust of scientific risk assessments, has facilitated the widespread perception that nuclear energy sources are unsafe. Natural gas is also thought to be a replacement for coal. It is undeniably safer to produce electricity for both than coal and nuclear power. Moreover, it is the cleanest of the fossil fuels. It yields about 70% more energy for each unit then than coal. As you can expect, its share of the electric power generation market is likely to increase. Natural gas usage though does have its drawbacks. From a supply-side perspective, the available amount of natural gas is relatively small. Further, complicating this issue is the uneven geographic distribution. Further, if natural gas were to replace coal as the primary source of electrical production, the most recent estimates indicate that all sources would be depleted within 40 years. This would likely increase dependence on foreign suppliers. The implication here and is that the price of natural gas would become volatile and increase at a rate far exceeding that of coal or nuclear power. Not to be forgotten in this discussion of natural gas are the environmental factors related to its availability and consumption. The price of harnessing the natural gas is not inexpensive. Further, the cost of locating, capturing, storing, and distributing natural gas is also expensive. However, it stacks up favorably against both coal and is much less expensive than nuclear power. Let us also not forget that natural gas, composed primarily of methane, is a greenhouse gas. To avoid global warming, controls must be present to minimize the release of methane into the atmosphere. This too raises the price of natural gas. Governments have become increasingly involved in these most prevalent of energy options. Moreover, governments have become involved specifically in relation to the environmental aspects of energy production. In this, the government has taken a three-pronged approach. First, efficiency and environmental safety have risen to the fore as primary considerations for the future of energy policy. Governments have promoted and implemented policies to foster the use of cleaner burning, more efficient, and more environmentally safe energy sources. Often however these goals are in sharp contrast to the market forces of providing inexpensive and available energy sources. Second, policymakers have sought to equalize both the cost and demand side of the equation. This is most evident in the nuclear power supply and demand equation. The initial foray into nuclear power required governmental subsidies to assist in the construction of nuclear power plants. Further, governmental intervention demanded that societies use the sources. The current rate of federal energy subsidies is 59.8% for fossil fuels (coal and natural gas) and 28.7% for nuclear energy. The remaining paltry 11.5% is dispersed amongst the various other sources. This means government is still not inciting energy companies to research or implement new sources of energy. Finally, policymakers have begun to provide incentives for using alternative energy sources at the end-user (demand) point. This includes allowing the installation of small-scale energy efficient home heating units, hot water heaters, and hybrid and electric automobiles. Other options are available for large-scale technologies such as wind farms and solar panel arrays, but to a lesser extent. The practice of providing incentives presents particular problems. The most pressing problem is that the government or utility ratepayers still need to absorb some of the costs of capital. To counterbalance these problems, the promotion of more energy-efficient technologies and alternative energy sources must be specifically targeted and offer specific incentives to the end-user and producer alike. ___ ENVIRONMENTAL CONSERVATION AND SUSTAINABILITY U2L1 Issues with Natural Resources Conservation Part 1 Human populations can be strained when subject to environmental stresses such as the inadequate availability of water, land, and agriculture, as natural resources. The availability of these resources is essential for the maintenance of human existence. Problems with these natural resources should be anticipated and prevented as much as possible. This section examines how economic institutions have allocated these resources in the past and how they might improve their allocation in the future. Water resources As we have discussed in previous course work, water is essential for human life to replace the continual loss of bodily fluids and to maintain the food sources upon which we depend. The problem with the existing sources of potable water is the allocation of supplies to sustain a variety of competing users. An efficient allocation of water must strike a balance between the competing users and sustaining the year-to-year availability. The concept of supply and demand is integral to this discussion. There are two problems to be address, maintaining an adequate supply of water and managing the demand for that water. This is especially relevant to groundwater resources where, when withdrawals exceed recharge from a particular aquifer, the resource will be mined over time until water supplies are exhausted. The problem is further complicated where groundwater and surface water supplies are not physically separated. For example, groundwater withdrawals from a specific region, in many areas of the United States, immediately affect the surface water flows. This is an especially tricky issue when cross-state, or cross national, boundaries are put into play. Therefore, the hydrologic nature of the water source must be taken to consideration when designing a water allocation scheme. From our previous coursework, we have discussed the concept of riparian rights. This is where the right to use water is allocated to the owner of the land adjacent to that water. Yet with population growth and the consequent rise in demand for water resources, this allocation system becomes less appropriate. This situation creates demand for a change in the property rights structure from riparian rights to one that was more transferable. A new structure developed by the government was known as usufructory rights. In this, users are accorded a right to use a common source of water. The current situation for allocating the use of water resources is embedded in the state and federal governments role in the problem. Many problems are associated with this point. The first is the restriction of free market availability of this natural resource. Diminished transferability of the use of this water resource puts market pressures on different parts of the market and in different portions of the United States. Likewise, these regulations strongly discourage conservation. Moreover, the government established preferential use which brought about bureaucratic preferences for the use of the water. Further, damage caused by overuse is not addressed in this doctrine. Possible solutions to the allocation of water are as follows. Reduce the number of restrictions on water transfers between agriculture and other uses. The current use it or lose it component that a companys most preferential use discourages conservation. Implement the use of water markets and water banks. In this, water is allowed to move to its higher valued use and buyers and sellers are brought together to negotiate its value thereby encouraging conservation. Revising the value of water is a necessity for conservation. This recognizes the efficiency associated with subsidizing the consumption of a scarce resource. Further, revenues collected can be placed into a fund to mitigate environmental damages and to allow for construction of dams for storing water. Revising the value of water seasonally. This would allow for changes in severe drought conditions and to manage water usage during times of scarcity. This would require consumers to act differently during times of drought. Encouraging the use of desalinated water in areas where appropriate. Technological advances have reduced the price of desalinized water but growth in this market has not outpaced demand. There are a number of possible means of remedying the current water situation. These reforms would promote a more efficient use of water while affording more protection to the natural resource. It is clear that charging everyone the same rate irrespective of their consumption is a strategy that deserves more attention. Land Land is another natural resource that deserves specific attention. Land conservation has specific issues related to typography, location, and characteristics. Land is typically allocated based on its highest valued use. The problem is clear. Wilderness areas are subservient to agriculture, residential development, commercial use, etc. There are particular problems with our current use and allocation of land. Urban sprawl is when land use in a particular area is inefficiently dispersed. Another issue is leapfrogging where new development continues not on the very edge of current development but further out. Both bring particular problems with development. These include longer trips to work, home, or leisure activities. This brings about increased energy demand and increased opportunities for pollution. Incompatible land usage is another particular problem with our current use and allocation of land. As an example, the particular costs associated with land use may not accrue exclusively to the landowner. An example of this occurs to neighborhoods near landfills, toxic waste facilities, CAFOs, or large industrial complexes. Undervaluing environmental preservation is just another particular problem with our current use and allocation of land. As an example, if the owner of a large farm near a scenic preservation area, sells to a residential developer, the benefits of their large open space to wildlife, travelers, and leisure activities is not typically a basis for different decisions affecting its land use. A final issue is the confluence of taxes on land use relative to conservation. Typically, property taxes in the United States are imposed on land for its current market value. Environmental factors are not typically included in that valuation model. One way to deal with the many particular problems associated with the current use and allocation of land is to implement innovative market-based remedies. The first innovative remedy is the separation of property rights. A property rights system can mitigate or avoid the problems of overexploitation that can occur when land is merely allocated on a first-come, first-served basis or sold to the highest bidder. By establishing secure enforceable claims, the efficient transfer and maintenance of the valuable use of the property can be directly allocated. Another way is to establish transferable development rights (TDR). TDRs establish areas where development is prohibited and areas where development is encouraged. If done in the local level, communities will determine the best allocation and use of lands. Another way is the establishment of land banks. For example, wetlands banking is a means of promoting economic benefits of wetland preservation. These mitigation banks allow for the use of lands around wetlands, streams, or other aquatic resources to preserve, enhance, or replace sensitive wetland areas. A similar program is present for conservation banking. Safe harbor agreements are a new means of conserving endangered and threatened species on privately owned land. These provide for new restrictions of land based upon the threat to the endangered species. Grazing rights has also been away to deal with the problems associated for overgrazing on public lands. This too is a means of dealing with the particular problems associated with the use of grazing on federal lands, which has been allowed since 1934. Finally, conservation easements and land trusts are means by which legal agreements limit the use of land in order to protect its intrinsic value. This intrinsic value might be to preserve a surface water resource, scenic vistas, or to promote eco-tourism. Agriculture The efficient use of agricultural land is a requirement for sustenance around the globe. The problems associated with a lack of efficiency includes starvation, hunger, hunger related diseases, malnutrition, and a variety of ancillary adverse effects. As an example, cereal grain is the worlds cheapest supply of food and is a renewable resource if managed effectively. Further, this could be sustained as long as we receive energy from the sun. Yet the current agricultural practices are neither sustainable nor efficient. Further, the recent trend has been to increase the scale (size) of the average farm and a reduction in the overall number of farms thus raising questions of future sustainability. The problems intrinsic to this argument are as follows. While technological progress provides the main source of support for optimism, concerns are present regarding the ability of industrial nations to achieve productivity gains. This includes a declining share of land allocated to agricultural use, the rising cost of energy, and increased environmental costs (i.e.: overuse of fertilizer, deforestation, soil completion, soil erosion, etc.). An interesting twist in this argument is imbedded in the example of corn. While this is a relatively stable and useful food source, the expansion and the use of ethanol has decreased the amount of corn available for food. There are sources for optimism in this discussion. Technological advancements in genetics have produced food crops that are more resistant to diseases and pests, hardier crops capable of surviving in marginal soils, and increasing crop yields. In addition, the growth in organic food sources has minimized human disease after upta ke. The economic gains in past several decades have created depletion to our agricultural resources. The past role of government has been complicit in this debacle. Historically, governments have subsidized the use of fertilizers and pesticides, guaranteed prices for outputs, given marketing loans based on crop prices, and implemented trade barriers. Recently however, the role of government in implementing effective agricultural policies has been on the rise. Governments have begun to encourage sustainable agriculture. Further, they have required that farmers consider energy and environmental costs. Subsidies for some agriculture have been removed and replaced with subsidizing possible technological advancements. Conclusion As we have seen from the above, human populations can be strained when subject to environmental stresses such as the inadequate availability of water, land, and agriculture, as natural resources. The availability of these resources is essential for the maintenance of human existence. Problems with these natural resources must be managed. As regulators cope with the myriad of issues related to conservation, they must consider the advancement in technology and the maintenance of a sustainable supply of natural resources.

A Brief History of the Hybrid Vehicle Essay -- essays research papers

Brief History of Hybrid Vehicle Development First built in the early 1900s by inventors tinkering with combinations of the electric motor and the gasoline engine, hybrid vehicles were dropped when gasoline-fueled vehicles became more reliable and easier to start, and gasoline fuel more readily available. Research and development of hybrid vehicles was revived by concern about oil dependency in the1970s and about air pollution in the late 1980s. A number of hybrid vehicles have been built and tested since 1980. Some of these vehicles have impressed analysts with their performance and low levels of exhaust and petroleum consumption. Interest in hybrid vehicles jumped in late 1993 with the announcement of funding for two major collaborations. The US Department of Energy signed a five-year, $138 million development agreement with General Motors and a $122 million agreement with Ford to design and build preproduction hybrid prototypes that could be marketed in less than 10 years.[1] All these were done because hybrid electric vehicles are expected to be the future of vehicles worldwide. Definition One considers a vehicle to be a hybrid when it combines two or more sources of power. For example, a mo-ped (a motorized pedal bike) is a hybrid because it combines the power of a gasoline engine with the pedal power of its rider. Similarly, the gasoline-electric hybrid car is a combination of both an electric car and a gasoline-powered one. That is, it makes use of both electricity and gasoline to provide the energy to turn the wheels of the car. Figure 1 shows a gas-powered car. [2] Components Of A Gasoline Powered Car The 4-cylinder engine converts gasoline into motion so that the car can move. The easiest way it does this is to burn the gasoline inside the engine. Therefore is acts as an internal combustion engine i.e. combustion takes place internally. Gasoline powered car engines typically have over 100 horsepower and operate at speeds up to 8000 RPM. The fuel tank stores and supplies gasoline to the engine. It can typically store enough fuel to provide the engine with energy capable of moving the car through a distance of 300 miles or more. Figure 2 below shows an electric car, which has a set of batteries that provides electricity to an electric motor. The motor turns a transmission, and the transmission turns the wheels. [3]... .......................How I found my references........................... Send me your comments...........................Homepage...........................Comments -------------------------------------------------------------------------------- [1] Daniel Sperling; Future Drive: Electric Vehicles and Sustainable Transportation, pg 101 [2] http://auto.howstuffworks.com/hybrid-car1.htm [3] http://auto.howstuffworks.com/hybrid-car1.htm [4] http://auto.howstuffworks.com/hybrid-car2.htm [5] http://auto.howstuffworks.com/hybrid-car3.htm [6]http://web1.infotrac.galegroup.com/itw/infomark/155/298/52759225w1/purl=rc1_ITOF_0_A122672547&dyn=5!xrn_15_0_A122672547?sw_aep=swar94187, Electric and Hybrid Vehicles Today, Sept 30, 2004 p0 , Article A122672547 [7] http://auto.howstuffworks.com/hybrid-car4.htm [8] http://www.morphizm.com/observations/borah/borah_corner1.html [9] Daniel Sperling; Future Drive: Electric Vehicles and Sustainable Transportation, pg 100 [10] http://auto.howstuffworks.com/hybrid-car8.htm [11] Daniel Sperling; Future Drive: Electric Vehicles and Sustainable Transportation, pg 2 [12] Electric and Hybrid Vehicles Today, Oct. 7, 2004, p0; Article A122947647 A Brief History of the Hybrid Vehicle Essay -- essays research papers Brief History of Hybrid Vehicle Development First built in the early 1900s by inventors tinkering with combinations of the electric motor and the gasoline engine, hybrid vehicles were dropped when gasoline-fueled vehicles became more reliable and easier to start, and gasoline fuel more readily available. Research and development of hybrid vehicles was revived by concern about oil dependency in the1970s and about air pollution in the late 1980s. A number of hybrid vehicles have been built and tested since 1980. Some of these vehicles have impressed analysts with their performance and low levels of exhaust and petroleum consumption. Interest in hybrid vehicles jumped in late 1993 with the announcement of funding for two major collaborations. The US Department of Energy signed a five-year, $138 million development agreement with General Motors and a $122 million agreement with Ford to design and build preproduction hybrid prototypes that could be marketed in less than 10 years.[1] All these were done because hybrid electric vehicles are expected to be the future of vehicles worldwide. Definition One considers a vehicle to be a hybrid when it combines two or more sources of power. For example, a mo-ped (a motorized pedal bike) is a hybrid because it combines the power of a gasoline engine with the pedal power of its rider. Similarly, the gasoline-electric hybrid car is a combination of both an electric car and a gasoline-powered one. That is, it makes use of both electricity and gasoline to provide the energy to turn the wheels of the car. Figure 1 shows a gas-powered car. [2] Components Of A Gasoline Powered Car The 4-cylinder engine converts gasoline into motion so that the car can move. The easiest way it does this is to burn the gasoline inside the engine. Therefore is acts as an internal combustion engine i.e. combustion takes place internally. Gasoline powered car engines typically have over 100 horsepower and operate at speeds up to 8000 RPM. The fuel tank stores and supplies gasoline to the engine. It can typically store enough fuel to provide the engine with energy capable of moving the car through a distance of 300 miles or more. Figure 2 below shows an electric car, which has a set of batteries that provides electricity to an electric motor. The motor turns a transmission, and the transmission turns the wheels. [3]... .......................How I found my references........................... Send me your comments...........................Homepage...........................Comments -------------------------------------------------------------------------------- [1] Daniel Sperling; Future Drive: Electric Vehicles and Sustainable Transportation, pg 101 [2] http://auto.howstuffworks.com/hybrid-car1.htm [3] http://auto.howstuffworks.com/hybrid-car1.htm [4] http://auto.howstuffworks.com/hybrid-car2.htm [5] http://auto.howstuffworks.com/hybrid-car3.htm [6]http://web1.infotrac.galegroup.com/itw/infomark/155/298/52759225w1/purl=rc1_ITOF_0_A122672547&dyn=5!xrn_15_0_A122672547?sw_aep=swar94187, Electric and Hybrid Vehicles Today, Sept 30, 2004 p0 , Article A122672547 [7] http://auto.howstuffworks.com/hybrid-car4.htm [8] http://www.morphizm.com/observations/borah/borah_corner1.html [9] Daniel Sperling; Future Drive: Electric Vehicles and Sustainable Transportation, pg 100 [10] http://auto.howstuffworks.com/hybrid-car8.htm [11] Daniel Sperling; Future Drive: Electric Vehicles and Sustainable Transportation, pg 2 [12] Electric and Hybrid Vehicles Today, Oct. 7, 2004, p0; Article A122947647

The Meaning Of An Inspector Calls by J.B. Priestley :: Papers

The Meaning Of An Inspector Calls by J.B. Priestley J.B.Priestley's "An Inspector Calls" is a good play that attacks the social problems of its time; it contains all the ingredients of a well-made play. This is because it is very dramatic, and it has the attention of the audience. It gets this by the use of climaxes, the slow plot of a detective with persevering style. Despite this the author is concerned with the darker side of the world. The play is Priestley's attempt to try to say this. Priestley sees the country as not very truthful and neglecting its responsibilities. The members of the Birling family are only concerned with them selves over others. They are responsible for the young woman's' death by treating her different; and show what Priestley is trying to say, and is fighting against. " An Inspector Calls" is a well-made play because it contains many factors that sustain attention of the audience. One of the factors that makes the play captivating is the use of climax, the way it keeps the audience on the edge of their seats all the way through; it is quite slow to gather the plot and then finally has a powerful climax, for example the way the Inspector extracts small pieces of information from the family and slowly puts the picture together and narrows it down to the guilty person as the climax. He misleads the family until they are all contradicting one another. He keeps the audience guessing all the way through the play, and as clues are solved the culprit becomes clearer, but as soon as one thinks he or she knows who it is Priestley cleverly switches to another character. This makes the audience very interested in the action that is happening. The strange appearance of the Inspector when the Birlings are having a celebration party, and Mr Birling is giving a speech on how the modern man should be. The Inspector steps in almost as he was prepared to challenge Mr Birling; this seems to bring up facts about the

Evaluation of the Endosymbiosis Theory

Evaluation of the Evidence The modern version of the endosymbiosis hypothesis was developed and promoted by Dr. Lynn Margulis in 1970. The term endosymbiosis comes from â€Å"endo† meaning â€Å"within,† and symbiosis which occurs when two different species benefit from living and working together (Genetic Science Learning Center). This theory proposes that the organelles of eukaryotic cells, specifically the mitochondria and chloroplasts, were once free-floating bacteria that were ingested by larger, prokaryotic bacteria by means of endocytosis.The host bacteria benefitted from the engulfment of the organelles as they were able to carry out functions, such as cellular respiration, more efficiently than the host itself could. Therefore, the free-living bacteria were not digested, and consequently over time their DNA was combined with the host bacterial cell’s DNA to eventually develop a new form of cells called eukaryotes.One of the most eminent pieces of evidenc e that supports the hypothesis is that although prokaryotic cells and eukaryotic cells are quite distinctive in physiological characteristics, some of the organelles of eukaryotes share a number of staggering similarities with prokaryotes. Like prokaryotes, the mitochondrion and chloroplast both replicate through means of binary fission, unlike the eukaryotic cells that contain them, which undergo mitosis.Moreover, prokaryotes and the abovementioned eukaryotic organelles have circular DNA, whereas eukaryotes have linear DNA. The size of the DNA is also a factor in the theory as the prokaryotic DNA and the DNA of the organelles is similar in size, and much smaller than that of eukaryotic cells. The dissimilarities between the physical characteristics of the DNA in the eukaryotic nucleus and the DNA in the organelles lead to the impression that the organelles were once bacterial (prokaryotic) symbionts (IUPUI Department of Biology).However, since the DNA in the nucleus and the organel les replicate independently of each other, there is the possibility that random mutations may have occurred, thus causing the discrepancies in the DNA over a certain period of time. Therefore, this evidence is not conclusive proof that the organelles are possible descendants of ancestral bacteria. Additionally, chloroplasts and mitochondria are surrounded by a double membrane. This provides further evidence to the endosymbiosis theory because it suggests that these organelles were ingested by a primitive host (Genetic Science Learning Center).To explain this circumstance, the host cell ingests the bacterium through phagocytosis – a form of endocytosis – which results in an additional lipid bilayer formed by the vesicle membrane, in addition to the bacterium’s inner plasma membrane (IUPUI Department of Biology). There is no other known cause as to why these organelles have double membranes, other than the widely-accepted endosymbiotic theory. In the field of scie nce, a theory is a well-established explanation based on extensive experimentation and observation, and is generally accepted as fact by the scientific community (Genetic Science Learning Center).Although some of the evidence provided in support of the endosymbiosis hypothesis is not irrefutable, there is more evidence is support of the theory, than there is against it. Therefore, in my opinion, the amount of research put into this topic over the years and the various evidences that have been unearthed in support of it, as well as the lack of proof against it, lead me to accepting this theory as conclusive. However, I also want to note that research is always being done, and in the near future it is possible that scientists may propose new, improved theories.REFERENCES Genetic Science Learning Center (1969, December 31). The Evolution of the Cell. Retrieved on October 8, 2012 from http://learn. genetics. utah. edu/content/begin/cells/organelles/ IUPUI Department of Biology (2002, Ja nuary 14). The Endosymbiotic Theory. Retrieved on October 8, 2012 from http://www. biology. iupui. edu/biocourses/N100/2k2endosymb. html Caprette, D. R. (2008). Evolutionary Origin of Mitochondria. Retrieved on October 8, 2012 from http://www. ruf. rice. edu/~bioslabs/studies/mitochondria/mitorigin. html