The Technology of Landing on Mars :: Computers Space Papers

The Technology of Landing on Mars While just traveling to Mars is a difficult task, landing on the planet has proved to be next to impossible, with only a small fraction of the attempted landings ending in success. Over the years there have been several different designs of Martian landers that have attempted to slip past the proverbial â€Å"galactic ghoul† protecting the planet Mars. However, few of these designs have fared successful at landing smoothly. These technologies have ranged from the original Viking using aero braking and rocket power, to the Mars Pathfinder mission’s novel air bag solution. In order to gain insight into the surface of the red planet, landing is a must. Thus, the potential solutions and their benefits and drawbacks must be examined. The Purpose: Delta V Requirement To get from orbit around Mars to the surface requires a significant amount of braking. First, the lander in orbit has a large amount of gravitational energy with respect to the surface of the planet. Second, orbiting the planet requires a certain velocity that will be greater than the velocity of rotation of the planet for a low orbit, this excess velocity must be bled off as well. Energy requirements they are usually expressed in terms of the change in velocity necessary for a given maneuver, or delta-v. To escape from a planet requires a certain increase in velocity and to land requires a certain decrease. Either way, however, energy is required; in absolute terms, the energy required to land should match the energy required to escape. Escaping the surface of the Earth requires about 11,000 m/s of delta-v. To travel to Mars orbit about 6,000 m/s is required. The smallest portion of the delta-v required is the approximately 5,000 m/s necessary to land on the surface of Mars. (Clarke 221). However, what makes this one of the most interesting phase of the trip is that whereas we pretty much know what to expect from the first two legs of the trip, what types of situations we may encounter on landing are largely unknown. How To: Methods of Landing There are several different options to lower the velocity of the lander once it has reached the planet. These options are generally used in combination with one another for maximum effect. Each has its own advantages and drawbacks, but in combination, some of these can be alleviated. Aerodynamic Drag The most broadly used, and most useful, of the speed-reduction mechanisms fall under the category of aerodynamic drag.

Kingship Comparison of Henry V and Beowulf Essay

This essay is a comparison of the kingship of King Henry V in the play â€Å"Henry V† written by William Shakespeare and Beowulf in the poem â€Å"Beowulf† translated by Seamus Heaney. The specific texts to be used for this purpose is the â€Å"Henry V† book of the Folger Shakespeare Library series and the â€Å"Beowulf† poem found in The Norton Anthology of English Literature 7th edition Volume 1, respectively. Henry the Fifth and Beowulf are ideal kings fit to become role models for the leaders of today because they have great ideas of their kingship and leadership which made them rule over each of their kingdoms with strength, courage and faith in God’s providence as their source of power. These similar qualities and characteristics make their kingship successful and fruitful. Henry the Fifth is worth emulating for he is a great and powerful king who holds his role as a king with highest regard. He manifests his ideas of kingship through his deeds throughout the play. First, he sees his kingship as a serious matter. Thus, he acts responsibly forgetting the â€Å"wildness† of his youth. This is evident in his sudden transformation from the wild Prince Hal that he was in the past to a responsible and mature King Henry V. This is what Canterbury observes and states: â€Å"The breath no sooner left his father’s body But that his wildness, mortified in him, Seem’d to die too: yea, at that very moment, Consideration, like an angel, came, And whipp’d the offending Adam out of him, Leaving his body as a paradise, To envelop and contain celestial spirits. Never was such a sudden scholar made; Never came reformation like a flood, With such a heady current, scouring faults; Nor never Hydra-headed wilfulness So soon did lose his seat, and all at once, As in this king† (Shakespeare, 13). This change in him is probably because of his desire to be respected as a ruler of his people. Indeed, he has matured over the time that he is required to stand up as a king. Second, he considers that his kingship depends on the will of the people. Hence, he consults his leaders before he makes a decision. He specifically asks information from the leaders of the church, the Bishops, about the Salic law and his rightful claim to France and if there should be a reason for him to go to war if the king of France won’t accede to his claim. He also expresses his worry about leaving the country to go to war against France. He finally decides to go to France after hearing the advice of the bishops and after listening to the insult of the Dauphin through his messenger (19-23). Third, he believes that a king should have restraint and self-control. That is why when he was insulted by the message of the Dauphin, he did not react irrationally. He showed cool-headedness with these words: â€Å"We are glad the Dauphin is so pleasant with us; His present and your pains we thank you for. When we have matched our rackets to these balls, we will in France, by God’s grace, play a set to strike his father’s crown into the hazard. † He also adds: â€Å"But tell the Dauphin, I will keep my state; Be like a king, and show my sail of greatness† (35). Moreover, he could have prevented the Dauphin’s messenger from coming out alive from England. Instead, he allowed him safe passage. If he were some other irrational king, he would have taken revenge right away. But he did not and thus, he showed his greatness as a king. He also chose his words well in sending his message to the Dauphin through his uncle Duke Exeter (75). Fourth, he assumes that a king should be brave and courageous to lead his soldiers to war. Therefore, he is not afraid to go to war even if it will cost his own life. He does not leave his soldiers on their own to fight for the country instead he goes along with them and encourages them to move on. Henry V admonishes his soldiers with these words: â€Å"But every rub is smoothed on our way. Then, forth, dear countrymen. Let us deliver Our puissance into the hand of God, Putting it straight in expedition† (65) and â€Å"We are in God’s hand, brother, not in theirs. March to the bridge† (119). Fifth, he has concern for his subordinates and his soldiers. When he was still contemplating to go to France to claim his rightful place, he thought of the women and the children who will be left behind when the men will go to war (29) especially that another country might attack their country if the king and all the men are away. He also became worried for his soldiers after he disguised as an ordinary man and talked to some of his soldiers (153). This concern is also demonstrated when he prays â€Å"O God of battles steel my soldiers’ hearts. Possess them not with fear† (155). Sixth, he knows that his kingship is not a reason for abuse. So when he and his troops have taken over the town of Harfleur, he commands his soldiers not to loot and he tells them to respect and show mercy to every citizen in that town. He charges Exeter to have mercy on the people and show fairness and justice because he wants to win the people’s loyalty and respect (99). Seventh, he understands that a king should practice impartiality. Thus, he gives punishment to anyone who violates a law of the land or his word even if the person is an old friend, and he gives rewards to anyone who deserves it. King Henry V manifests this characteristic when Lord Scroop who was very close to him, Earl of Cambridge and Sir Thomas Grey who are also old friends conspired with France to kill him. He then ordered that they be arrested for treason (59). Another instance was when he allowed the execution of Bardolph, a former companion in his younger days, for stealing a communion plate from a church (115). Eight, as a good leader he believes that a king needs to delegate work to his subordinates. This is what he did when he tells his uncle Exeter, brothers Clarence, Warwick and Gloster, and Huntington to â€Å"go with the King; And take with you free power to ratify, Augment, or alter, as your wisdoms best Shall see advantageable for our dignity, Anything in or out of our demands† (219). And most of all, he believes on a greater power who is the Almighty God whom he considers as his source of power. He continually refers to God in the play. King Henry says: â€Å"But this lies all within the will of God, To whom I do appeal† (37) when he decided to go to war against France. He expresses his anxiety by saying â€Å"God’s will, I pray thee wish not one man more. By Jove, I am not covetous for gold† (163) while his soldiers are fighting in the war. At the end of the battle, he speaks to God with these words: â€Å"O God, thy arm was here, And not to us, but to Thy arm alone Ascribe we all! – When, without stratagem, But in plain shock and even play of battle, Was ever known so great and little loss On one part and on th’ other? Take it, God, For it is none but thine† (199). King Henry V does not take the glory of the victory in the battle but he praises God for it. Similarly, Beowulf even before he was made a King of the Geats has the qualities of a good and great king as Henry the Fifth is and he is also worth imitating as a leader. The following are the ideas of kingship he manifested. First, Beowulf is compassionate as a leader. When he heard of Heorot’s predicament because of Grendel’s deeds, he went to Heorot to fight Grendel and freed Heorot of its miseries (lines 400-460). He has compassion towards people that is why he sacrifices even his own life to save others. Second, he uses his strength which is the gift that God has given him as a way to help people who are in need. This is the means by which he was able to defeat Grendel, Grendel’s mother and the Dragon in order to free the people who are attacked by these creatures. There are times when he is about to be defeated but because of the great strength which he believes comes from God, he is able to overcome his deadly and monstrous foes. Third, he is a brave and courageous warrior who never steps back from a challenge especially when he fights Grendel and Grendel’s mother. His bravery and courage can be seen throughout the poem. This was once again proven when as a king who is already old in age still hopes to fight the Dragon that has besieged his own land. Unfortunately, after he killed the Dragon, he also died. Fourth, he knows that a king should rule with discretion. He is even praised by Hrothgar with these words: â€Å"The Lord in his wisdom sent you those words that Beowulf is fit to be king of the Geats and they came† (lines 1840-1860). Fifth, as a leader, he has great concern and responsibility for his men. Thus, when he was about to go and fight Grendel, he asks Hrothgar to take care of his men because he might no longer come back alive with his fight against the monster. And the most important of Beowulf’s qualities as a warrior and ruler is that he looks up to God as his source of power, guidance and protection. Throughout the poem, God is praised with such words as: â€Å"in triumph and gladness. The truth is clear: Almighty God rules over mankind and always has† (line 700). Beowulf also expresses in the poem: â€Å"But the lord of Men allowed me to behold- for He often helps the unbefriended† and â€Å"If God had not helped me, the outcome would have been quick and fatal† referring to his fight with Grendel’s mother. In addition, he says: â€Å"So I praise God in his heavenly glory that I lived to behold† (line 1779). In conclusion, Henry the Fifth and Beowulf exhibit the good qualities of a great king anchored on strength, courage and faith in God’s providence. Both of them are wise, strong, brave, and devoted to God as their one and only source of power. They have very admirable traits which any king, ruler or leader in these modern days should pattern after. References â€Å"Beowulf†. Translated by Seamus Heaney. The Norton Anthology of English Literature 7th edition Volume 1. Eds. M. H. Abrams and Stephen Greenbalt. USA: W. W. Norton & Co. Inc. , 1999, 29-98. Shakespeare, William. â€Å"Henry V†. The Folger Shakespeare Library. Eds. Barbara A. Mowat and Paul Werstine. New York: Washington Square Press. 1995.

Evaluate the Strategic Leadership of Michael O’leary

Is Michael O’Leary an asset or a liability to Ryanair? The case suggests that he is both. Students could debate the pros and cons of Michael O’Leary’s continued leadership of the company. The characteristics that have driven the company forward – his enthusiasm and energy, his strategic insight, his determination and mission orientation – can be carried too far. Is it all part of an integrated inseparable whole, so do you have to take the good with the bad? Is this where we may enter the realm of Sidney Finkelstein’s failure warning signs, when you have too much of a good thing? In fact, some schools of thought would value Michael O’Leary’s relentless energy and his thriving on adversity. It shows a lack of complacency – quite the opposite of what Finkelstein points out as a danger signal. The capacity to irritate may bring about conflict and change. Also, in Michael O’Leary’s favour, as Ryanair’s largest single shareholder, he literally ‘puts his money where his mouth is’. Another way of looking at Michael O’Leary’s leadership is whether he was the right person for the job during the change era, but does the company now require more of a ‘manager’ than a ‘leader’ during a consolidation era? In other words, this is a ‘horses for courses’ approach to the evaluation of O’Leary’s leadership. One may ask whether and/or for how much longer Michael O’Leary wants to stay in the job. Will he get bored and retire to his cattle farm, currently his hobby? There is a suggestion that he would not be happy to preside over a static comfortable situation. Or, would he be headhunted by another airline or by another business altogether? Students might consider whether they would headhunt Michael O’Leary, and why or why not. Chapter 10 discusses types of leaders, i. e. transformational versus transactional and types of leadership emphases and approaches. It is an interesting exercise to see how students would categorise Michael O’Leary. Perhaps what emerges is that he is difficult to categorise. What does this imply?

Compassion Fatigue Essay

The idea of caring for others is the motivating reason that draws most people into nursing. The concept of being a supportive part of a person’s health care needs is exactly the cause of compassion fatigue. Compassion fatigue can hit the best of nurses. Nurses who are highly driven and detail oriented are at a higher risk for developing compassion fatigue. Compassion fatigue was a term first applied in 1992; it is described as a syndrome that occurs in nurses when caring for a patient facing life-altering or life-threatening changes resulting from an illness. Compassion fatigue is prevalent among nurses today, due to increasing patient loads, as a result of nurse shortages and hospital cut backs. Compassion fatigue in nursing should not be ignored. There are classic warning signs that someone might be experiencing compassion fatigue. Recognizing the signs of compassion fatigue and following the necessary steps to prevent and treat it can provide one with the tools needed to make their nursing career rewarding. Warning signs of five concepts of compassion fatigue An essential first step in developing a prevention plan is to recognize the warning signs of compassion fatigue. Learning to become aware of the problem is the first step in prevention. Compassion fatigue cuts you off from the people that need you the most. Warning signs of compassion fatigue can include cognitive, emotional, behavioral, spiritual, and somatic symptoms (Portnoy, D. 2011). Cognitive Nature of the Problems and their Causes Cognitive behavior is the ability to judge and reason effectively and having a perception of your surroundings. Cognitive symptoms can include a decreased sense of personal satisfaction and personal accomplishments. A feeling of indifference or apathetic with ones patients is another sign. A  sense of disorientation with lowered levels of concentration can also be seen during this phase. Emotional Nature of the Problems and their Causes Our emotions are a valuable source upon which we can rely on. Our emotions help us make decisions, and communicate with our patients. When experiencing compassion fatigue our emotional health suffers. Emotional signs that one might be experiencing compassion fatigue could include powerlessness, anxiety, guilt, anger, numbness, fear, helplessness, sadness, depression, shock, blunted or enhanced affect (Portnoy, D., 2011). Behavioral Nature of the Problems and their Causes Behavior is simply the way we react to a given situation. In regards to nursing, behavior is the skills and ability to care for our patients. Behavioral symptoms of compassion fatigue usually manifest in behaviors that are out of the ordinary for the person. Some examples might include irritability, being withdrawn from family, friends and co-workers, moody, appetite changes, unable to get adequate sleep, and isolating one’s self (Portnoy, D., 2011). Spiritual Nature of the Problems and their Causes Spirituality can be described as a person’s way of being, thinking, choosing, and acting in the world in light of that person’s ultimate values(Barlow, 2006). Spiritual compassion fatigue can cause a person to question the meaning of life, or experience feelings of hopelessness. They might also question their relationship with God, or their religious belief system. Often times they will stop attending the church that they once faithfully attended. Somatic Nature of the Problems and their Causes The somatic system deals with our bodies. The somatic system is responsible for nearly all voluntary muscle movement as well as for processing sensory information. When compassion fatigue affects our somatic system we can experience physical symptoms such as, sweating, rapid heartbeat, breathing difficulties, aches and pains. Frequent headaches and colds can also develop during this phase (Portnoy, D., 2011). Physical, emotional, and spiritual needs of the caregiver Examining the progression of compassion fatigue and its symptoms, one thing is important to understand, compassion fatigue can have a major impact on a nurses professional career. It is easy to see that some of the symptoms can impair the ability of the nurse to provide quality nursing care to their patients. The best defense against compassion fatigue is for healthcare workers to take a proactive approach to their physical, emotional, and spiritual care. Physical needs of Caregiver The first step in the providing for the needs of caregiver is for the caregiver to recognize the symptoms of compassion fatigue. Healthcare workers should develop an improved sense of self-care. Healthcare workers, nurses in general spend their professional life taking care of others. Nurses should take care of their selves first. They need to develop a healthier lifestyle, by getting regular sleep, eating a balanced diet, and exercising regularly. Emotional needs of Caregiver Nurses who are young, idealistic, and highly motivated tend to suffer from compassion fatigue at a higher risk (Bush, N., 2009). Talking to friends, peers, and family to gain ideas on how to better balance your job responsibilities with your personal life is one area of focus for the healthcare worker. Learning to set boundaries in the early stages of your career can be a valuable tool. Recognizing your limitations is important; you cannot stop all the suffering and pain of all your patients. Learning that you can be there to help your patients without needing to fix everything can lessen the emotional toll that dealing with difficult situations presents. Spiritual needs of Caregiver Caregivers need to prepare their minds, bodies, souls, and spirits to become resilient in working with patient at intense levels (Bush, N., 2009). Caregivers need to develop skills of empathy when dealing with patients. A positive belief system and attitude can prevent feelings of hopelessness.  Caregivers should recharge their selves by making a list of enjoyable things that they find pleasure in. Remembering how inspired and motived they felt during those early days after graduation can help to refocus their thoughts in a more positive manner. Coping strategies and resources Applying a systemic approach to the prevention of compassion fatigue can provide the healthcare worker with valuable tools in the prevention of compassion fatigue. Awareness of what situations contribute to your stress level, what events cause an increase in your stress. Develop a health balance in your life. Provide yourself the opportunity to enjoy your favorite activities on regular bases. Learn to connect with friends, co-workers, and family to develop a positive support system in order to talk out your stress by sharing your thoughts and reactions to certain situations. Conclusion Realizing that you have control over how you manage your life. Being compassionate is not a character flaw; on the contrary, it is a great gift. The healthcare profession is a very demanding career. The ability to serve others is one of the highest callings that a person can have, but in order to do this effectively you must first take care of yourself. Understanding the key symptoms of compassion fatigue will allow for caregivers to put into place the necessary tools in order to prevent compassion fatigue. Engaging in self-care strategies will be beneficial for healthcare workers in order to handle to day to day stressors of their profession. References barlow828. (Nov 28, ’11). Spirituality in Nursing. Retrieved Sunday, Sep 01, 2013, from http://allnurses.com/showthread.php?t=646693 Bush, N. (2009). Compassion fatigue: are you at risk?. Oncology Nursing Forum, 36(1), 24-28. doi:10.1188/09.ONF.24-28 Gilmore, C. (2012). Compassion fatigue — what it is and how to avoid it. Kai Tiaki Nursing New Zealand, 18(5), 32. Portnoy, D. (2011). Burnout and Compassion Fatigue: Watch for the Signs. Health Progress. Retrieved from http://www.compassionfatigue.org/pages/healthprogress.pdf

International Development of Cricket Essay Example | Topics and Well Written Essays - 3000 words

International Development of Cricket - Essay Example At present, cricket is the only game, which has laws other than rules, which covers the specific size or weight of pitch, crease, wicket, and ball. First and last occurrence of cricket in Olympic was in the year 1900 and the match was between France and Britain. After a long time the renewed interest is boosting up to again introduce cricket in the Olympic Games. In the year 1909, ICC was formed with founder nations like England, South Africa and Australia. ICC was previously known as Imperial Cricket Conference but later changed into, the International Cricket Conference. The abridged version of cricket was introduced in the 1960’s, which is more commonly known as, one-day cricket. The one-day cricket gained its popularity due to globalization and as the format is quite shorter than the usual test cricket The successes of one-day matches in increasing global viewership, helped ICC to figure out the ‘Cricket World Cup’. During the last 60 years, the interest of pl aying cricket among the new countries has doubled in numbers and countries like India, Pakistan, New Zealand, Sri Lanka and Zimbabwe are new entrants in this league. Out of these countries some of the countries took cricket professionally and some of them accepted it non-professionally without any cricketing facilities. Cricket has also evolved, like other games, with the passage of time. Cricket is an interesting game, have large fan following over the last century, and still has the capability to attract fresh fans from the new generation. This popularity is hailed among them because of the introduction of unique ideas incorporated in the game by the leaders and controllers. Cricket has evolved from five-day tests to one-day internationals and now to new avatar T20s because at present there is very little time in the hands of people which can be spent on viewing sports. The effect of globalization has made the life much more faster than before and hence, the viewers like to watch sports which

Negotiating with the emotionally disturbed Essay

Negotiating with the emotionally disturbed - Essay Example Due to these reasons, the affected people become antisocial, depressed and dependant on people that are close to them. The 1992 terrorist attack in Munich affected many people whose family members or friends lost their lives. The press helped a lot but it was too late since the attackers had already accomplished their plan. Bergh and Lipscomb (1904) argue that anywhere that when the press is free, everything is safe. The riot at Attica in 1971 brought about the racial issue of the whites supervising a prison that mast of the inmates were blacks and Hispanic who were from urban areas. The primary grievances by the rioting prisoners were that there were cultural differences and basically lack of clear understanding among the prison warders. The reasons were confirmed and termed as a legitimate problem that could be addressed by the government (Irwin 1980). The Attica riot These factors have led to the increase of minority staff in prisons to prevent more riots in the prison. This is a factor that was sought in the whole country for over thirty years .minority workers are often very reluctant to relocate to rural areas where most of the prisoners have a the same ethnic background or in other cases the prisons are of the same race. Some workers also find it difficult to take jobs that can be viewed as racist given the fact that there is overrepresentation of minority prisoners in the justice system. These obstacles have not stopped the prisons to achieve the success of obtaining the racial balance and good ethnic representation of the workers in various prisons. Many researchers have paid little or no attention to the change in the correctional units and the whole impact of the racial balance when it comes to deploying the workforce in prisons nation wide (Wright and Saylor 1992). What happened at Attica brings about the subsequent realization of putting in mind the representation of the minority staff in all the prisons. In any organization in the world today, tea mwork among the workers in prison is very important for efficiency and very instrumental to attain a safe institution. In addition to that, it is crucial for all the prison officers to work closely with all the inmates to prevent more riots. When correctional officers work as a team putting aside problems like the racial diversities, it brings about effective work thus preventing more riots in future. The 1972 Munich terrorist attack This was a traumatic experience to the Germans. The Olympic Games were underway when terrorists killed many people that the incident was termed as a massacre. The Israeli Olympic team was kidnapped and mercilessly killed by Palestinians. The influence of the massacre to the contemporary culture is that the media has been given freedom to report on anything that can affect the country. In the world today, the media is very sensitive on terrorism matters and how it conveys it to the public. Palestines are viewed as terrorists and the world at large is ver y conscious when dealing with anyone from the east. The Jewish on the other hand are friends to the western countries like the united states and the UK.The effects of the attack is very evident in the contemporary society in that the migration of people from the east especially the Arabs to countries in the western world have been restricted due to the fear of terrorism. People from different continents today antagonize the Arabs especially the palatines because they are termed as terrorists and enemies of Israel. Since the day of the massacre, the Israelites have very good relationships with many countries worldwide. This is because people think that they were attacked for no reasons other than the history between the

Disaster Resilient Engineering Innovations Essay

Disaster Resilient Engineering Innovations - Essay Example For a holistic approach to mitigating the impact of the catastrophe, a multi-stakeholders collaboration is necessary. For engineering plans to be successful, knowledge, researchers, and information from other disciplines such as geologists, sociologists, public administrators, information technology, the government and several others must be involved. With the experiences of the countries on the different types of calamities, the government and the concerned private groups that includes engineering organizations, continually devise plans and designs to make communities resilient and sustainable amidst the threat of natural disasters. This paper will present the innovations and initiatives implemented in the field of engineering to mitigate the impact of natural disasters, particularly earthquakes, flood, and tsunami. Earthquakes, flood, tsunamis, and other natural disasters have occurred in more frequency around the globe have caused billions of dollars lost and an unaccounted number of deaths. These natural calamities have challenged the stability of buildings, bridges and other infrastructures. Thus, engineers and planners have continually engaged in innovative engineering approaches in order to mitigate the impact of these natural forces. Floods, earthquake, and tsunamis, as well as landslides, cyclones, etc. have posted a major challenge to governments, much more than they have become a regular occurrence. 1 A great challenge to the government is to protect the lives of people and animals, as well as properties. 2 In order to attain these goals, engineering plans must be designed capable of bearing the force that these natural disasters bring forth. Also important is building of rehabilitation and medical institutions that could bear the load since victims will be treated in these facilities when a disaster strikes. 3 Rehabilitation and medical facilities must be constructed farther from fault zones and coastal.