Orbital Space Debris

Orbital Space Debris Free Online Research Papers Orbital Space Debris The sun rose blindingly over the crest of the earth. The astronaut moved outside the Space Shuttle Discovery’s cargo bay in his Manned Maneuvering Unit (MMU). Held by the shuttle’s robotic arm, a damaged satellite hung about 800 kilometers above the earth and a few meters below the astronaut. As the space walker hovered closer to the satellite, he looked down to see clouds covering parts of America, including his home state of Nebraska. The satellite was damaged badly. Sporting only one solar panel, it had a broken metal arm that made merely a stub on the other side. The day earlier, they had intercepted the missing solar panel, burned and smashed beyond repair. Upon inspection of the damages, both in space and back on earth where the satellite was taken, it was confirmed that a small piece of foreign space debris was responsible for knocking out this civilian communications satellite. While in the vastness of space, an accident like this seems only realistic in a Hollywood movie, but this fictional description is more real than what people realize. It has been fifty years since the launch of the first satellite, Russia’s Sputnik. Since then, as is the case with rapidly advancing technology, satellites have only proliferated and become more entrenched in society’s existence. This has created an incredible amount of crowding in the earth’s orbit that will only get worse as time progresses. The current space debris is tracked by both the US Space Surveillance Network and US Strategic Command. They keep a data base of all objects in Low Earth Orbit (LEO) larger than 5 centimeters in diameter and all object in geosynchronous orbit (GEO) larger than one meter in diameter. There are currently 12 000 catalogued objects, of which only 850 are active satellites. Several thousand more cannot be catalogued because their origin is unknown. Several events in recent history have complicated the situation in the skies, however. The main source of orbital debris for the last half century was in fact the ordinary breakup of satellites in orbit, the wear-and-tear of constant use. In the 1980’s, the US and Soviets tested anti-satellite (ASAT) weaponry, leaving much shattered satellite debris. One US test was conducted in September 1985 and the last piece of catalogued debris decayed from orbit only three years ago. However, both the Soviets and the Chinese have resumed their ASAT testing programs earlier this year. In January of 2007, the Chinese used a kinetic-energy ASAT weapon to destroy their dysfunctional Feng Yun-1C, increasing its percentage of the total orbital debris to 20%. The next month Russia exploded a Briz-M rocket booster stage, raising its total percentage to 40%. The implications of this newly created space jam are numerous. While today, satellites are rarely damaged like the fictional account described earlier, orbital collisions are becoming more frequent. Through the nineties and into the current decade, collisions occurred about every five to eight years. Catastrophic collisions, involving total destruction of the objects that collided, were estimated to occur only every nineteen years. For different orbital radii, there are different risk levels. The most crowed highway around the globe is the 800 km elevation. Not only is the most debris concentrated at this altitude, but it is the most common orbital height for civilian satellites. Now, the countless remains of Feng Yun-1C and the Briz-M booster are circumnavigating Earth at that radius as well. The SSN predicts that because of the many small, un-chartable remains of those two satellites, the collision risk would nearly double. Collisions would occur every three to four years and catastrophes would fall in the five to ten year range. However, a majority of these particles, as previously stated, are very small. Therefore, it would seem that the danger posed by these objects is very low and almost negligible. Basic kinetic energy theorems would disprove this notion. These objects orbit with speeds around 10 km/s. Consider most of these to be around one gram. Taking kinetic energy to be the kinetic energy of one of these particles would equal 50 000 Joules. In comparison, a 100 kg mass traveling at 100 km/hr has only 38 580 Joules. Therefore, these collisions are extremely dangerous for orbiting satellites. NASA has implemented ordinances to prevent the spread of orbital debris. Also, in 2002, the Inter-Agency Space Debris Coordination Committee set guidelines in place covering the production of such debris. The Orbital Debris Program Office issued a study in 2006 (before the Chinese and Russian ASAT tests) that some areas of space had already reached a super critical debris density. Therefore, these guidelines are of the utmost importance. However, there is no law passed to limit orbital breakup. The United Nations patterned guidelines after the IADC, and were seeming to be effective for some time. While there was a steady increase in orbital debris up through the mid nineties, it began to taper off into the new millennium. Unfortunately, the Russian and Chinese ASAT tests have caused a tremendous backslide in the effort to clear up the skies. While it may seem minor and insignificant now, the problem of orbital debris will only deteriorate as time progresses unless action is taken soon to mitigate the situation. The more debris placed into space, the more regions will become super critical in status. The future of safe space travel depends on the control and containment of our orbital junk. Wright, David. â€Å"Space Debris.† Physics Today. 60.10 (October 2007): 35-40 NASA Orbital Debris Program Office. 2007. 8 December 2007. . Research Papers on Orbital Space DebrisBook Review on The Autobiography of Malcolm XInfluences of Socio-Economic Status of Married MalesHarry Potter and the Deathly Hallows EssayAnalysis of Ebay Expanding into AsiaBionic Assembly System: A New Concept of SelfOpen Architechture a white paperHip-Hop is ArtTwilight of the UAWWhere Wild and West MeetThe Relationship Between Delinquency and Drug Use

Flannery O'Connor's A Good Man is Hard to Find Essay - 1

Flannery O'Connor's A Good Man is Hard to Find - Essay Example The Grandmother is very irritating woman. During the car ride, she lies about the dimensions of a house just to make it sound more interesting to the children. And when she realizes that the house she’s been bragging about is not even in that state, she panics and kicks the cage holding the cat. She doesn’t do that on purpose. She is annoying but she doesn’t deserve to be shot three times in the chest. In fact she tries to make a connection with the Misfit during the confrontation and when she feels sorry for Misfit and about the way he has been treated all his life, she tries to physically touch him and at that moment Misfit’s henchmen shoot the old woman. It is very true that many people only claim to be Christians but in the dealings of their lives, their behavior, their conduct and their daily conversations are devoid of the spirit of Christianity. The grandmother is blessed with a loving son but she is not thankful for it and doesn’t actually care about him. In fact she treats him as a tool and takes advantage of his obedience. In the book, after the car accident Misfit and his men seize the family and they take family members in the woods and shoot them. Seeing her fate very clear the grandmother suddenly remembers God and Jesus and turns soft. She asks Misfit to pray so that his soul may be spared for the sins he has committed all his life. A very religious and philosophical conversation takes place towards the end of the story between the Misfit and the Grandmother, where Misfit tries to mock Jesus by saying that he created a lot of confusion by raising dead people (in hidden words, he mocks the whole concept of heaven a nd hell and the day of judgment). To this, grandmother agrees somewhat by saying that probably he didn’t raise the dead after all but when she gets shot in the chest, she falls down with her legs crossed in to her grave, representing her faith in a dramatic and symbolic way. "Flannery

At Aetna, a C.E.O.s Management by Mantra Article

At Aetna, a C.E.O.s Management by Mantra - Article Example The significant HR function done very well in Aetna is employee motivation and encouragement. The article presents a relatively new approach that Aetna is using to motivate employees. Based on the interview, there have been changes noted since the employees started to take part in the Yoga classes. The success being experienced at Aetna starts with the company leadership and its view on employee motivation and management. Mr. Bertolini points out that the organization does not try to force employees to take part in things they do not want. The bottom line is that Aetna leadership does not endeavor to control employees. Instead, the management is working hard to encourage employees and make them feel part of the company. The approach taken by Aetna in managing its human capital is the reason the company has registered increase in output. The provision of Yoga classes and the pay increase for those earning minimum wage are clear indications that Mr. Bertolini views employees as human beings who have feelings and ambitions. During the interview, Aetna CEO, Mr. Bertolini keeps on repeating the importance of treating employees as human beings who have feelings (Gelles, 2015). He narrates how he was moved by an article on minimum wage that made him increase the salaries of the employees who were earning minimum wage. The transformational leadership approach taken by Mr. Bertolini has been the driving force of the changes being witnessed in Aetna. Mr. Bertolini has been able to inspire employees by showing them how it is done instead of just commanding. In the article, Mr. Bertolini discusses how he convinced the company doctor to create Yoga classes. He did not take a commanding approach. He found a way to convince the doctor by appealing to the doctor’s thirst for science. A critical review of Aetna’s success story shows that the form of the leadership used in the company has

The Caribbean Societies Essay Example | Topics and Well Written Essays - 1250 words

The Caribbean Societies - Essay Example In the history of the development of the society, several social changes have already transformed the development of the social structure and their development course. In the past, some examples of social changes in the past are the use of contraception particularly birth control pills as related to the population and marital realm in the society, the electoral system development incorporating women as the result of the female suffragist's action for equality, and the acceptance of the concept of homosexuality in the social structure. These social changes have caused the development of the present social community to their contemporary state in the modern period. In the present, several social change issues are still influence the social behavior of the population namely the information technology structure which it now integrating their influence in the respective lives of the people. This in turn, has caused their presence to become a significant factor in the present state of mode rnity of the present social culture transforming the present society to become dependent upon the technology for their daily needs and activities. Modernization is mainl... Often this concept is viewed as the product of the evolutionary pattern of the society in their development towards achieving a better approach towards their needs. Progress is the main determinant of the nature of this concept as observable in the life conditions of the people. Indeed, modernization can be observed in most critical social aspects and structure relevant to the daily activities of the population. The present state of modernization is primarily product the different stages of development that occurred in the previous periods. Each development stage produces a new standard of progress in the society wherein this respective level manifests as a better approach than the previous one in terms of the betterment of the condition of the population. (Schmidt, 2008, 54) Examples of the dominant modernization changes in the society are the development in the communication field in terms of contracting the regional gaps of the population, the progress in media developing the mean of transference of news and information, and the progress in the computing field as influenced by the rapid industrialization of the technology industry. On actual social structure, the concept of modernization is also dominant affecting the normative processes and approaches in each significant social system. An example of this is the modernity in the processes in the criminal justice field wherein their critic al investigation has been further developed with the advancement of their facilities and technological development. Indeed, modernization brings forth the general influence of development as part of the continuous pursuit of the population towards progress.(Yelvington, 2006, 56) In

Enteprise risk management unilever by the example of unilever lipton Essay Example for Free

Enteprise risk management unilever by the example of unilever lipton Essay Introduction More and more companies begin to understand the importance of risk management (Enterprise Risk Management, ERM) — the fields of management thanks to which business doesnt revolve, and receive an additional boost. Still, quite recently many ERM programs were directed, mainly, to studying of already known problems, or to the assessment of all risks in a row, irrespective of their level. Though such activity also allows giving employees full-time job, it seldom brings benefit to the company focused on the result. It is obvious that conditions of business are accompanied by the huge amount of risks. Without preliminary preparation of the company, supported with the realization of the strategy, can fall a victim of any unforeseen event which will threaten their success, and it is possible, and to survival. In such time, it is very important to have the reliable ERM program which is interwoven into the fabric of strategy of the company and is integrated into its daily business activities. However, implementation of the effective ERM program is today not the simplest task. Having faced the uncertainty of prospects of changes in standard regulation and economy, many companies make considerable efforts to create the effective and purposeful program which will provide an understanding of the most important risks. Though each enterprise and branch has the specifics, there is a number of the general actions which will lead to the creation of more effective ERM program. Background information Unilever is the British and Netherlands company, one of the world leaders in the market of foodstuff and goods of household chemicals (including perfumery). Now in these segments, the company is the second in the world sales volumes. The headquarters are located in London and Rotterdam. The company is led by the board of director’s representative Michael Treschow. The executive managing director is Paul Poleman. The net income for the previous year was on the level of 5.2 billion euros. The company has more than 175 thousand employers worldwide. ERM Overview Risk management plays an essential role in the company in achieving its long-term goals. The success of the Unilever company. The overall company’s success depends on its abilities to identify and evaluate risks and opportunities generated by either business or markets the company is in. The total turnover of the company was more than â‚ ¬52.7 billion in 2016. 57% of the business being held across the world takes place in emerging markets. The company owns 13 brands, all of them have annual sales volume more than 1 billion euros per year. The company has more than 169 thousand employers worldwide. The gender structure of the company is following: 46% of managers are women and 54% are men. By 2016, over 610 Unilever sites were distributing zero non-hazardous waste to landfill. The Unilever company is number one FMCG graduate employer of choice in 34 of the 60 countries to be recruited. In 2016 Sustainable Living brands grew 40% faster than the rest of the business of the Unilever. ERM Integration with strategy Appraisal of Unilevers Risk Management Strategies Unilever has perceived that the vast majority of the dangers presented to it might wind up noticeably material snags to the organizations further advancement. According to this fact, it has attempted to take some viable and organized measures to distinguish and after that endeavor the key hazard administration systems for the business. There are several specific risk management strategies that are implemented with company’s mission and long-term strategy: Unilever has been carefully observing monetary markers and purchaser conduct in various territories through broad and expert research with a specific end goal to react rapidly and take new and adaptable measures to take care of the changing demand of clients. So as to manage the issue of budgetary instability, the organization has been attempting endeavors to access worldwide obligation advertises through different routes, for example, short-term or long-term debt programs. Unilever appends extraordinary importance to the change of loan cost, attempting to have distinctive sorts of budgetary administrations and adjust the dangers amongst drifting and settled rate enthusiasm after an expert forecast and appraisal of the financing cost. Regarding the remote foreign exchange rates, Unilever sets an arrangement which constrains the working organizations monetary outside trade exposures in order to reduce such risk. Unilever has made a progression of standards and strategies for the technique of design, producing, and retailing of items to guarantee the high requirements of items quality. What more Unilever has a â€Å"Sustainable Development Group† which consists of 5 external specialists, involving in the company’s strategy development. Associated Risks Conclusion References http://www.cfin.ru/finanalysis/risk/ERM.shtmlhttps://www.unilever.com/Images/risks_ar15_tcm244-477397_en.pdfhttps://www.slideshare.net/muthukum/unilevers-lipton-risk-management-with-business-intelligencehttps://www.unilever.ru/about/who-we-are/introduction-to-unilever/

Confinement in The Yellow Wallpaper by Charlotte Perkins Gilman

Confinement in The Yellow Wallpaper by Charlotte Perkins Gilman      Ã‚   Charlotte Perkins Gilman's The Yellow Wallpaper is a commentary on the male oppression of women in a patriarchal society.   However, the story itself presents an interesting look at one woman's struggle to deal with both physical and mental confinement.   This theme is particularly thought-provoking when read in today's context where individual freedom is one of our most cherished rights. This analysis will focus on two primary issues: 1) the many vivid images Gilman uses to illustrate the physical and symbolic confinement the narrator endures during her illness; and 2) the overall effect of, and her reaction to, this confinement.      Ã‚  Ã‚  Ã‚  Ã‚   The Yellow Wallpaper begins with the narrator's description of the physically confining elements surrounding her.   The story is cast in an isolated hereditary estate, set back from the road and located three miles from town. The property boasts protective hedges that surround the garden, walls that surround the estate, and locked gates which guarantee seclusion.   Even the connecting garden represents confinement, with box-bordered paths and grape- covered arbors. This isolation motif continues within the mansion itself. Although she preferred the downstairs room with roses all over the windows that opened on the piazza, the narrator finds herself relegated to an out of the way dungeon-like nursery on the second floor, appropriately equipped with "rings and things" in the walls.   Windows in each direction provide glimpses of the garden, arbors, bushes, and trees.   The bay is visible, as is a private wharf that adjoins the... ...age or How to Read Your Own Life."    Charlotte Perkins Gilman: The Woman and Her Work.   Ed. Sheryl Meyering.   Ã‚  Ã‚  Ã‚   Ann Arbor: UMI Research Press, 1989.   75-94.       Works Consulted:    Ehrenreich, Barbara and English, Deirdre."The 'Sick' Women of the Upper Classes," The Captive Imagination: A Casebook on the Yellow Wallpaper, ed. Catherine Golden, New York, Feminist Press, 1992, 90-109.    Hedges, Elaine R. Afterword. The Yellow Wallpaper. 1973: 37-63. Twentieth-Century Literary Criticism 9. Detroit: Gale: 1988.    Shumaker, Conrad. "'Too Terribly Good to Be Printed': Charlotte Gilman's The Yellow Wallpaper'" American Literature. 57 (1985): 194-198.    Treichler, Paula A. "Escaping the Sentence: Diagnosis and Discourse in The Yellow Wallpaper"' Tulsa Studies in Women's Literature. 3 (1984): 61-77.    Confinement in The Yellow Wallpaper by Charlotte Perkins Gilman Confinement in The Yellow Wallpaper by Charlotte Perkins Gilman      Ã‚   Charlotte Perkins Gilman's The Yellow Wallpaper is a commentary on the male oppression of women in a patriarchal society.   However, the story itself presents an interesting look at one woman's struggle to deal with both physical and mental confinement.   This theme is particularly thought-provoking when read in today's context where individual freedom is one of our most cherished rights. This analysis will focus on two primary issues: 1) the many vivid images Gilman uses to illustrate the physical and symbolic confinement the narrator endures during her illness; and 2) the overall effect of, and her reaction to, this confinement.      Ã‚  Ã‚  Ã‚  Ã‚   The Yellow Wallpaper begins with the narrator's description of the physically confining elements surrounding her.   The story is cast in an isolated hereditary estate, set back from the road and located three miles from town. The property boasts protective hedges that surround the garden, walls that surround the estate, and locked gates which guarantee seclusion.   Even the connecting garden represents confinement, with box-bordered paths and grape- covered arbors. This isolation motif continues within the mansion itself. Although she preferred the downstairs room with roses all over the windows that opened on the piazza, the narrator finds herself relegated to an out of the way dungeon-like nursery on the second floor, appropriately equipped with "rings and things" in the walls.   Windows in each direction provide glimpses of the garden, arbors, bushes, and trees.   The bay is visible, as is a private wharf that adjoins the... ...age or How to Read Your Own Life."    Charlotte Perkins Gilman: The Woman and Her Work.   Ed. Sheryl Meyering.   Ã‚  Ã‚  Ã‚   Ann Arbor: UMI Research Press, 1989.   75-94.       Works Consulted:    Ehrenreich, Barbara and English, Deirdre."The 'Sick' Women of the Upper Classes," The Captive Imagination: A Casebook on the Yellow Wallpaper, ed. Catherine Golden, New York, Feminist Press, 1992, 90-109.    Hedges, Elaine R. Afterword. The Yellow Wallpaper. 1973: 37-63. Twentieth-Century Literary Criticism 9. Detroit: Gale: 1988.    Shumaker, Conrad. "'Too Terribly Good to Be Printed': Charlotte Gilman's The Yellow Wallpaper'" American Literature. 57 (1985): 194-198.    Treichler, Paula A. "Escaping the Sentence: Diagnosis and Discourse in The Yellow Wallpaper"' Tulsa Studies in Women's Literature. 3 (1984): 61-77.   

Music and Religion in African-American Slave Culture

The buying, selling, and trading of human beings for personal labor, slavery, Is often thought to be singlehandedly the most atrocious thing that mankind as a whole has created. The horrors these innocent men, women, and children faced on a day to day basis was parallelled perhaps only by the soldiers fighting the war over their freedom. Though slavery was full of negatives, it also blossomed with positives as a means to cope.African-American slaves used several aspects of their native African ulture to cope, two primary components being music and religion. Slaves worked under constant watch by their owners, constantly fearing punishment for a slip-up. Enslaved African-Americans obviously resented the way they were being treated, end devised ways to rebel against their owners right under their noses.Reaching back to their African roots, slaves sang seemingly harmless songs to one another as they worked under the sweltering sum Little did their owners know that the slaves had eaved in tricate secret messages into their lyrical pieces, such as metaphors intended to ridicule their masters or to send signals to other slaves. Their music was a mix of tribal African rhythms and American religious music, as they relied heavily on their religion to cope from day to day.Even though their outlook was bleak, Slaves stayed positive in the face of sheer adversity through their faith. The most common faith emong slaves was that of christlanlty. he christlan doctrine being passed down from fathers to sons and so on, Initially, some slaves were not chrlstlan. and held fast to their old polytheistic beliefs from their home, Africa. Asslmllatlon was inevitable however, and nearly all negro slaves were converted Their native religion did not cease to exist, but rather lived on through a stylized take on christianity.They incorporated several aspects of the African religion with christianity, such as rituals and vocalization. Sometimes both religion and music came hand in hand to t he slaves, who praised their Lord through song and dance. Slaves kept their heads high in hopes of being freed someday. Even today, the Influences of slave music and religion can be seen In modern religion, gospel music, hip-hop, rap. and the like. Even though slavery Is a memory many try to forget, It can still be remembered positively through the culture that emerged through the confinement