Discussion Essay Example | Topics and Well Written Essays - 250 words - 149

Discussion - Essay Example It also noted failure by the colonial authority to respect the fundamental rights, a factor that led to the Spirit of ’76 and declared liberty of the states. The writing therefore uses the Spirit of ’76 as a basis for its independence declaration objective (The National Archives, N.d.). The Common Sense that Thomas Pain authored in the year 1776 called upon Americans to abandon dialogue and fight for independence. Even though Americans already laid some of its arguments down, the arguments reinforced the urge for a revolution as did the new arguments. Pain’s description of proponents of reconciliation such as men with self-interest who cannot be trusted, weak men, and men with prejudice are examples of argument that motivated revolution (Pain, 1776). Authored earlier in the year of the Spirit of ’76 and supporting existing ideas and proposing new ideas for revolution, the document is understood as a factor to the

Purpose for Educational Leadership Personal Statement

Purpose for Educational Leadership - Personal Statement Example With my master degree, I was credited with 3 Advanced Certificates in Management from the same university, to wit: Advanced Certificate in Information Management, Advanced Certificate in Telecommunication Management, and Advanced Certificate in Human Resource. My interest in educational leadership is an expected offshoot of an increased awareness in contemporary leadership theories gained from human resources management courses. I have started to remunerate on the development of leadership theories through time – mostly focusing on leadership styles and perspectives on motivating one’s followers. Despite the enormous amounts of theoretical framework on guidelines for effective leadership, there still exist conflicts in organizations that could not be resolved by the so-called leaders who have supposedly gained so much expertise on the field of human behavior in organizations which highlight modules on managing conflict, change, culture, diversity, and teamwork, among others. My educational background equipped me with conceptual frameworks on management and technology. I am aware that the history of education has evolved from a curriculum comprising of a simple theoretical framework to the complex structure we have today. The development of technology opened a whole spectrum of information and educational opportunities which enhanced the capabilities of individuals. Murphy, et.al. (2002) averred that â€Å"school leaders, educational administration faculty, and policymakers are endeavouring to redefine the profession in an era of ferment, during which the legitimacy of its knowledge base and the appropriateness of programs for preparing school leaders have been thrown into question†. More and more educational programs and institutions opt to apply leadership theories for diverse reasons. In this regard, I am interested to look into the increasing incidents for educational institutions’ use of adjunct faculty to augment teaching needs and requirements, not duly supported by full-time faculty members.     

The American Revolution Essay Example | Topics and Well Written Essays - 250 words - 2

The American Revolution - Essay Example The call for the formation of a legitimate government was a central pledge among the ideas advocated for by the colonists. The colonists opposed the monarchial power of the British colonizers to appoint political representatives. The colonists demanded for their rights to appoint political representatives. The notable degradation of human rights by the British, especially in the south, inspired the revolution movements. Contrary to the British, the colonists wanted an end to slavery. The call for consideration of women rights was vital in inspiring the colonists to push for the revolution movement. As opposed to the British government, the colonists wanted equality granted to the female gender’s legal rights. The revolution movement had its basis on the need to instill religious freedom. The colonists wanted an independent religious institution from the control of the state, as well. These ideas that inspired revolution movement erupted from intellectual theories held by revolutionists. Scientific empiricism also contributed highly in escalating the revolution movement. The colonists successfully defeated powers of their aristocratic colonizers, courtesy of the inspiration from the ideas that they had. The formation of the states after independence had its basis on these diverse ideas including the beliefs of the Americans and the principles that initiated the desire for freedom. The formation of the constitution was the most influential part of in the enactment of the ideas of the independent people that they pledged for during the revolution movement (Bailyn

Purpose for Educational Leadership Personal Statement

Purpose for Educational Leadership - Personal Statement Example With my master degree, I was credited with 3 Advanced Certificates in Management from the same university, to wit: Advanced Certificate in Information Management, Advanced Certificate in Telecommunication Management, and Advanced Certificate in Human Resource. My interest in educational leadership is an expected offshoot of an increased awareness in contemporary leadership theories gained from human resources management courses. I have started to remunerate on the development of leadership theories through time – mostly focusing on leadership styles and perspectives on motivating one’s followers. Despite the enormous amounts of theoretical framework on guidelines for effective leadership, there still exist conflicts in organizations that could not be resolved by the so-called leaders who have supposedly gained so much expertise on the field of human behavior in organizations which highlight modules on managing conflict, change, culture, diversity, and teamwork, among others. My educational background equipped me with conceptual frameworks on management and technology. I am aware that the history of education has evolved from a curriculum comprising of a simple theoretical framework to the complex structure we have today. The development of technology opened a whole spectrum of information and educational opportunities which enhanced the capabilities of individuals. Murphy, et.al. (2002) averred that â€Å"school leaders, educational administration faculty, and policymakers are endeavouring to redefine the profession in an era of ferment, during which the legitimacy of its knowledge base and the appropriateness of programs for preparing school leaders have been thrown into question†. More and more educational programs and institutions opt to apply leadership theories for diverse reasons. In this regard, I am interested to look into the increasing incidents for educational institutions’ use of adjunct faculty to augment teaching needs and requirements, not duly supported by full-time faculty members.     

Journal Essay Example | Topics and Well Written Essays - 500 words - 18

Journal - Essay Example In these studies, chemical compounds in tobacco smoke seem to hasten follicular depletion (Soares 40). Moreover, qualitative impacts on follicular maturation, steroidogenesis, embryo development and fertilization have been documented. Exposure to cigarette substances in animals negatively impacts both pre- and post-impantation competence in embryonic development. For instance, tobacco inhalation in female mouse was demonstrated to be harmful to early development of the embryo and results into reduced fetal total weight. Direct nicotine injection in rats impedes cleavage of the embryo and considerably decreases the number of cells. It has been acknowledged women who smoke tobacco has a high probability of tubal barrenness and a noticeably a high danger of ectopic pregnancy. In a study, the ectopic pregnancy’s OR among smoking women was around 15.69. Tobacco smoking has been illustrated to negatively impact both the cellular and humoral immune systems. Moreover, it has been hypothesized that such changes may make tobacco smokers more liable to tubal contagions and ensuing infertility. Regarding the effect of tobacco smoking on male, Soares (42) contend that research demonstrate that normal conception in couples having a tobacco smoking spouse has a considerable decrease in fertility, with an elevated time-to-pregnancy, in situations where cigarette intake is greater than 15 per day. Tobacco smoking does not only alter variations in standard sperm limits, but also can impact the quality of the sperms. Also, biochemical alterations that can decrease the quality of sperms have been published in seminal liquid smokers, and tobacco genotoxicity is indubitable. In various groups analyzing DNA sperm fragmentation in tobacco smoking and nonsmoking males, it was established that an increased fragmentation rate in tobacco smokers was greatest in pre- and post swim-up

Evolution of the Human Hearing Essay Example for Free

Evolution of the Human Hearing Essay Evolution of the Human HearingIntroductionThe human ear has two major functions: ensuring body balance and sound detection. The balancing mechanism seems to have evolved earlier than the hearing mechanism. Early developing vertebrates had balancing organs, but they have no cochlea. A good example is fish. The basic function of the human ear is to sense sound. Sound is a compression of wave, which travels via a medium. For vertebrates, the medium perceived is air. Sound waves can travel through other mediums, such as water or ground. Hearing is a result of vibration of the surrounding medium that resonates parts of the body. The resonance is then transformed into electrical signals such that they can be interpreted by the human ear. The way human beings recognize sound has undergone changes since the discovery of the ear. Land vertebrates, birds, reptiles and mammals evolved primitively from amphibians, specifically the primitive fish. The formation of the inner ear started during the Devonian Period. There has been a debate whether the lateral line structure, a sensory system used to detect variations in pressure in amphibians, developed into the inner ear. Most scientists and researchers agree that the ear evolved from this lateral system. The lateral system is found beneath the skin of fish. It is a series of grooves and depressions with a group of hair cells, which lets the fish to adapt to variations in eddies and currents. According to (Duane, 1981) primitive fish possessed a simple sensory organ. The grooves evolved into the complex inner ear in vertebrates. The nerves cells in the human ear are adaptations of the earlier hair cells. In the course of evolution, a fish become more amphibious. Finally, it evolved into a land animal, which required a new sensory system to detect differences in air pressure. This was a way of improving their survival rates, such as danger recognition. According to (Clark, 2003) the Eustachian tube and the middle ear evolved from the respiratory mechanism of the fish, while the inner ear evolves from jaws. With time, the inner ear changed and developed. The part of the inner ear responsible for body balance evolved to the membrane of the oval window. The oval window is responsible for transmitting variations in air pressure. As this happened, the inner ear was growing bigger and bigger. In the fish, a tiny swell emerged in the vestibular of the ear. As the evolution progre ssed, the bulge evolved into a spiraled cochlea. This is what forms the hearing system of vertebrates. Gradually, fish evolved into amniotes, which are fully terrestrial vertebrates. Early amniotes did not have eardrums. According to (Gangestad, 2000) eardrums evolved six times in primitive amphibians, in anurans, in sysnapis, in diapsids (lizards, dinosaurs, and bids), in anapsids (turtles and its relatives), in reptiliomorphs and in temsnospondyls. According to paleontologists, our earliest ancestors breathed through their ears. According to (Gangestad, 2000) tubes that form the middle ear developed from gill-like structures that allowed sea creatures to breathe from back of their heads. Another study was done by ( Anthwal, 2012) which sought to examine 370-million-year old fossils, Panderichthyts. This is an immediate species between the amniotes and fish. The study reveals that Panderichthys had tiny bones in its skull that appeared similar to the early analogues of the gill system and the ear canals. The study suggests the canals are the ones which developed into true ears. This occurred after Panderichtys’s ancestors had become air breathers, freeing up their former gills structures for sensory functions. The study plays a critical role in understanding the evolution of the human ear. Our ability to ear relies on structures, which started as a gill opening in a fish, the study reveals. Human and all other vertebrates have special bones in the ear responsible for hearing. Ancient fish relied on the same structures to breath while in water. The study further argues that the human ear into a complex structure after animals established themselves on land. To draw valid conclusions, the study compared the fossil with its close cousin of the first land animals. In another fossil, Eustenopteron, a discovery of a small bone called hyomandibula was made. The bone later on developed a kink and blocked the gill opening. Furthermore, in early land animals like tetrapods Acanthostega, the bone receded, forming a larger opening. This is now a part of the middle ear in all vertebrates, including humans. A close study of the Panderichthys fossil offers scientists a crucial missing link between the ea rs and fish gill openings. According to (Anthwal, 2102) the characteristics are much more like those of tetrapods; there is no longer kink but the spiracle is widened and opened up. He found out that the hydomandibula is shorter, but rod-like in Eustenopteron. Another study of a hominid that was discovered in South Africa confirms that the human ear has undergone several changes. The fossil dated 1.9 million years was found to have several bones which are found on the modern human ear. However, the bones were not exactly the same. Three ear bones were identified. The malleus appeared to be human-like while the stapes and the incus appeared to resemble those of Chimpanzees. The study asserts that since the malleus of our early ancestors looks similar to ours, the changes of the bone must have occurred during our evolutionary history. The discovery is important in two ways. First, it suggests that ear ossicles are adult-sized and fully-formed at birth, but do not change in our lifetime. Second, the bones show that the hearing ability of ancient creatures was very different from that of modern humans. This is not necessarily, better or worse. But certainly, the hearing capability was different (Texas University, 2013). Following the discussion presented above, it can be noted that the human ear underwent several stages of evolution. The studies presented above clearly shows that the hearing capability of ancient creatures was different from that of modern humans. In addition to this, it can be noted that the human ear evolved from a simple gill structure all through jaw bones of a reptile. The following diagram summarizes our discussion. Diagram Adapted from: http://evolution.berkeley.edu/evolibrary/article/evograms_05References Anthwal N. (2012). Evolution of the mammalian middle ear and jaw: adaptations and novel structures. Journal of Anatomy 221 (1): 1–96. Clark, A. G. (2003). Inferring nonneutral evolution from human-chimp-mouse orthologous gene trios. Science, 302(5652), 1960-1963. Duane T. Gish, The Mammal-like Reptiles, Impact, no. 102, December 1981. Gangestad, S. W. (2000). The evolution of human mating: Trade-offs and strategic pluralism. Behavioral and brain sciences, 23(04), 573-587.Texas AM University. (2013, May 13). Prehistoric ear bones could lead to evolutionary answers. ScienceDaily. Retrieved March 22, 2014 from www.sciencedaily.com/releases/2013/05/130513174048.htm Source document

Ethics And Implications Of Computer Virus Information Technology Essay

Ethics And Implications Of Computer Virus Information Technology Essay Introduction A computer virus is a program that executes when an infected program is executed. It is capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer. Like biological viruses, computer viruses can spread quickly and are often difficult to eradicate. They can attach themselves to just about any type of file, and are spread by replicating and being sent from one individual to another. These are one of the few harmless viruses, simply replicating and spreading to new systems. There are a couple of different types of computer viruses: Boot-sector viruses Parasitic viruses Multi-partite viruses Macro viruses These classifications take into account the different ways in which the virus can infect different parts of a system. The manner in which each of these types operates has one thing in common: any virus has to be executed in order to operate (Lammer V., 1993) How in different ways those computer viruses can affect the IT industry and the society. What kind of implications they might cause? What kind of motivation motivates them to develop these computer viruses? Are they aware of the ethical matter surrounding their development? These are the issues that will be discussing in this report. History Many claims have been made for the existence of viruses prior to the 1980s, but so far these claims have not been accompanied by proof. The Core Wars programming contests did involve self-replicating code, but usually within a structured and artificial environment. It was not until the end of the decade (and 1987 in particular) that knowledge of real viruses became widespread, even among security experts. For many years boot sector infectors and file infectors were the only types of common viruses. The boot sector virus, dubbed the cBrain, was first incarnated written back in January 1986, considered to be the first computer virus for MS-DOS. It was programmed to infect the boot sector of storage media formatted with the DOS File Allocation Table (FAT) file system (Mary Landesman, 2000). In the early 1990s, virus writers started experimenting with various functions intended to defeat detection, among these were polymorphism. Polymorphic viruses are more difficult to detect by scanning as each copy of the virus looks different than other copies. Basically, polymorphic code mutates while keeping the original algorithm intact. Another introduction in the 1990s was the macro and script viruses, they were initially confined to word processing files, particularly files associated with the Microsoft Office Suite. However, the inclusion of programming capabilities eventually led to script viruses in many objects that would normally be considered to contain data only, such as Excel spreadsheets, Power Point presentation files, and email messages. This fact led to greatly increased demands for computer resources among antiviral systems. Email viruses became the major new form in the late 1990s and early 2000s, and while it is very visible and so tend to be indentified within a short space of time, but many are macros or scripts and so generate many variants (John Wiley, 2004). Computer ethics and computer viruses What impact did computer viruses have on ethics in the computer community? With the explosion of the number of computer viruses, this remains an unanswered question. In the years since viruses first appeared in the MS/PC-DOS computing environment, they have grown in both numbers and complexity at an alarming rate. They have become not only commonplace, but also extremely difficult to defend against. The virus creators have designed, compiled and released encrypting viruses, multipartite viruses, stealth viruses and viruses employing encryption techniques so bizarre that it warrants immediate concern. The scope of the problem has grown to the point where computer users are desperate for answers to their questions sand solutions to the computer virus dilemma (Ferguson, 1992). The  computer  ethics situation at present is as distorted and convoluted as it could have ever been imagined. Some of the more disturbing activities in the virus information channels recently, have been irresponsible postings of  source code, DEBUG scripts of live viruses and overall disregard of  computer  ethics and morals. To complicate matters, virus exchange Bulletin Board Systems (BBS) have cropped up where viruses and virus  source code  are freely exchanged. The people who engage in these activities have successfully shown their disregard for the remainder of the computing public. Perhaps these individuals have not given ample thought to the consequences of their actions. By allowing live  computer  viruses to freely filter into the public domain, they are ultimately responsible for any damage inflicted, either directly or indirectly, due to their negligence or disregard (Ferguson, 1992). According to the study of (Gordon, 1994) in which she has examined the ethics of virus writers using Kohlbergs ethical model, the observation shows that the virus writers are not a homogenous group, since they vary in age, education level, economical level, background, manner of communication, perspective of their society, and have different preferences. All of the foregoing will lead to different modes of thinking and different motivations behind their behavior. The adolescent and college virus writers are within the norms of their age group of the ethical development model, the reason for their behavior in writing and releasing viruses were unclear according to the collected information (Gordon, 1994, p15). While adult virus writers seem to be under the norm for their age group of the ethical development model and The Enemy seem to be Society (Gordon, 1994, p.15). It seems that virus writers desire to accomplish their goal conceals their vision from viewing the ethical issues, anot her reason could be their dissatisfaction with the society, since the ethics belong to it, and they want revenge against everything in their society including the ethics (Ahmad, 2005, p. 41). Implications may be for IT industry Computer virus implications on the IT industry may cause some company to upgrade their security to higher security level. The growing need for computer security specialists is predictable. Consultants may earn enviable income by telling corporate computer users how to protect their machines from catastrophic failure and how to use antidote and vaccine products. The computer specialists will be in a never ending game with each other. As they develop preventive vaccines and administer the viral antidotes, the viral breeders will also be developing new viruses to overcome the new security measures. (Lin Chang, 1989) The implications of the computer virus growth are especially important for Management Information Systems (MIS) as well. Management is becoming aware of the security considerations and internal policies of the firm. In order to prevent system contamination, employees should be warned not to use any unchecked programs. The MIS management should set more straightforward policies and the repercussions of not abiding by them. Similarly, any software used in the office should remain there and no place else. This is to safeguard against possible infections that could occur outside of the office environment. The focus of most policies will be on preventing external intrusions rather than internal threats simply for the sake of reducing external dangers (Lin Chang, 1989). Implications may be for society In early May of year 2000, the message I Love You appeared among emails of computer users worldwide. The attached virus since dubbed the Love Bug, infected up to 45 million computers, paralyzed bodies ranging from the World Health Organization to the Pentagon and is said to have cost business tens of billions of pounds in the UK alone. The Love Bug affected only software created by Microsoft, taking advantage of recent changes designed to improve performance, unfortunately over 90% of desktop computers were using Microsoft software. This software monoculture creates a system with an intrinsically high risk of catastrophic failure. Conclusion There are millions of computer virus developers out there in this world, creating the right virus all the time trying to expose the security of many kinds of system. As you can see, the number of computer viruses found in the world is increasing each year. Every time software and antivirus software developers invent new technology to prevent virus infection, computer virus writers thrilled the world with their ability to go around the new technology and develop the right virus for each age. There are hundreds of thousands of viruses out there (if not millions) and they often designed for different objectives, the writers of computer virus are not a homogenous group, their motivations could be the need to express their dissatisfaction with their social level, to achieve their revenge or to prove their technical ability, drawing attention, becoming famous and well known. It seems that computer virus writers determination to accomplish their goal may conceal their vision from viewing the ethical and legal issues (or they might not even care). Another reason could be their dissatisfaction with their society, since the ethics and legal codes belongs to it, and they want revenge for everything in their society including the ethics and legal codes (Ahmad, 2005, p. 43). The battle between the securities specialists against virus creators will never come to an end, as virus creators will always trying to overcome the security measures, antidotes and vaccines. These are just few of the impacts that can be expected on the computer industry. As for the computer society, the computer virus has become a fact of life. (Word Count: 1553) Bibliography Mary Landesman (2000) Boot Sector Virus Repair http://antivirus.about.com/od/securitytips/a/bootsectorvirus.htm, online (Accessed 3/11/10)