Friday, January 31, 2020

Instructional design Essay Example for Free

Instructional design Essay 1 â€Å"Well begun is half done†. So goes a saying. Action plans are like roadmaps for a meaningful journey toward a specific destination. Hence they are essential in any developmental work, including education and training. ADDIE is one of the most widely used action plan models used by instructional designers. It is an acronym for five terms â€Å"Analysis, Design, Development, Implementation and Evaluation† that constitute the five phases of the process. Analysis, the first phase, is a process of studying something by taking into account the characteristics of individual parts and their inter-relationship. The instructional designer curriculum content developers and teachers evaluate the cognitive â€Å"entry† behavior (knowledge, skills and attitudes) that his students possess before they are introduced to the prospective module, for instance a set of virtual laboratory experiments for use in a Grade 12 physics classroom. The team seeks answers to questions like â€Å"Are all students familiar with the theoretical concepts? †, â€Å"How much do they differ individually? † etc. It also considers the cognitive behavior that is expected from the learners at the end of the module (â€Å"What knowledge, skills and attitudes are they expected to have acquired after being taught in the virtual laboratory module? †) and the logistic aspects (â€Å"How best should the module be delivered? † â€Å"What is the time factor involved? †). The team considers all the pedagogic and logistic aspects of the issue in order to get a complete picture of any discrepancies between the â€Å"current† and â€Å"desired† levels of resources and processes used in the system. In effect, this is the phase in which measurable instructional aims and objectives are stated. In the design phase, the instructional designer and the design team develop a sequence of strategies that are most appropriate to realize the stated aims and objectives. Here the ID team creates comprehensive storyboards (Number and sequence of animations and interactivities, GUI, Voice over etc), uses wide range of strategies such as brainstorming, concept mapping, group discussions to collect information and implement Critical Path Networking etc.to monitor time and resources management. This phase answers â€Å"Why? †, â€Å"What? † and â€Å"How†? of the whole process. In the development phase, the ID works with the development team (consisting of content developers, animators and action script writers) to develop the virtual laboratory experiments as a pilot product, ready to be tested. This phase is usually more complex than the previous ones, as there is a higher probability of bottlenecks, such as lack of proper communication, unrealistic expectations, lack of convergence and inappropriate multimedia system configurations. This phase is mainly concerned with authoring and production and hence the most crucial. In the implementation phase, in practice the last phase of the model, the instructional designer and the team decide on the logistical aspects of implementation and the strategies for training the teachers, multimedia coordinators and learners. The team ensures that the process is smooth. The phase also includes delivery of the prototype. The most important phase in the model is â€Å"Evaluation† and it is carried out from beginning to end of the ADDIE process. Both types of evaluation, viz. formative and summative, are used in the process. The former is used to trouble shoot problems and apply alternative strategies when needed. The latter is used to assess the learner outcomes by providing evaluation tools such as criterion-based tests to the end users (learners). The feedback from them helps in bringing about modifications in the product, until all the stated aims and objectives are met. Thus ADDIE model serves as a wonderful canvas on which the concerned professionals can work on so that the instructional aims and objectives are realized in a smooth, efficient and effective manner. Thus, â€Å"Well begun, promptly followed by ADDIE, is almost perfectly done†. References Carliner Saul (2002) , DESIGNING E-Learning, American Society for Training and Development. http://alpha. nsula. edu/~gillan/08id. htm http://www. itrc. wvu. edu/coursedev/preproduction/addie. html.

Thursday, January 23, 2020

Physics of Skydiving :: physics skydiving

The Forces at Work Gravity ... God OBVIOUSLY intended for us to skydive. After all He DID create gravity! So exactly what forces are acting on the skydiver? Well, of course there's the obvious one, the force of gravity of the Earth. This force is exerted on everything on the Earth and is exerted on the skydiver even though there is no direct contact between the skydiver and the Earth. This type of force, when two objects exert forces on one another even though they are not touching, is known as a noncontact force. According to Newton's second law, the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object; or Fnet =ma The gravitational force that the Earth exerts on the skydiver is equal to the weight of the object on Earth. The acceleration of the gravitational force is the acceleration due to gravity (g), which is the acceleration of an object under the sole influence of gravity. Thus, the weight of an object is a product of its mass and acceleration due to gravity or W=mg The acceleration due to gravity (g) near the Earth's surface is a constant that was determined to be 9.80 m/s. So, the weight of an object depends on how much mass an object has. The mass of an object is a quantitative measure of inertia, where inertia is the natural tendency of an object to stay at rest or in motion at a constant speed along a straight line. Air Resistance Another force acting on the parachutist is air resistance. Air resistance is the colliding of an object with molecules of air. The falling skydiver collides with air molecules during the downward fall. These air molecules create a force pushing upward which is opposite to the skydiver's direction, as well as the force of gravity. Air Resistance is more complicated force than the force of gravity because it is a nonconservative force. A nonconservative force is one in which the work it does on an object moving in between two points depends on the path of the motion between the two points. The amount of air resistance encountered by the skydiver depends mainly on two factors: 1: The speed of the skydiver. 2: The cross-sectional area of the skydiver. An increase in the speed and/or the amount of cross-sectional area leads to an increase in the amount of air resistance encountered.

Tuesday, January 14, 2020

Dilemma of International Community

The US prevention strategies against international terrorism have come a long way since the mid-1990s. The disciplined, centralized organization that conducted the September 11 is diminished because most of the group’s senior and midlevel leaders are either incarcerated or dead, while the majority of those still at large are on the run and focused at least as much on survival as on offensive operations. However, Al Qaeda still has the potential to impose lethal threat.From the critical standpoint, the key challenges for contemporary counterterrorism efforts are not as much Al Qaeda or any other terrorist organizations as what will follow them. The emerging primary terrorist threat includes the global network of mostly Sunni Islamic extremists, which extends beyond members of Al Qaeda. The foundations of these extremist sources remain very much alive and in some cases are growing deeper. Practically, they contain the interconnected economic and political systems of the Muslim w orld.In addition to â€Å"Muslim† factor, there is a widespread opposition toward U. S. policies within and toward the Muslim world, especially the U. S. political position on the Israeli-Palestinian conflict and, which is more important, the invasion and occupation of Iraq (Byman, 2003:61). Considering the mentioned trends and reasons, the counterterrorism challenges after the liquidation of Al Qaeda may very well be even more complex than they were before.Decentralization and secretive nature of terrorist plots as well as indeterminate nature of the final target imposes extreme challenges on the intelligence. While the mission of intelligence in counterterrorism is to monitor and prevent terrorist activity, practically it may become vain due to its inability to identify terrorist groups and individuals. However, even a decentralized terrorist threat has some connections that can be discovered, and this will constitute the core of intelligence counterterrorist efforts.From t he practical standpoint, although almost every extremist can be connected at least indirectly to the network of Sunni Islamic terrorists, the majority of linkages includes only casual contacts and do not involve preparations for terrorist operations directed against the United States. No intelligence service possesses the resources to monitor all of these linkages, to construct the life history of every terrorist, or to compile comprehensive sociograms of the radical Islamist scene (Rothkopf, 2005:34).International community’s willingness to assist in the struggle against terrorist organizations to the major degree has depended on Al Qaeda’s record and menacing capabilities. However, from the contemporary point of view, foreign cooperation becomes more problematic as the issue moves beyond Al Qaeda. Mentioned difficulties that the United States has already encountered in dealing with Lebanese Hizballah depict some of the problems in more generally enlisting foreign hel p against terrorist groups (Byman, 2003:63).An underlying limitation to the willingness of international community to collaborate with the United States on antiterrorist efforts is the skepticism among foreign political elite that the most powerful country in the world needs to be preoccupied with small groups of radicals. Critically, the skepticism of foreign community can be considered in terms of fact that the U. S. preoccupation is no longer with the group that carried out the terrorist attacks on September 11 (Nash, 2004:56). However, the most significant challenge to the U. S.counterterrorist efforts that may emerge along with a more decentralized terrorist threat is the ability to uphold the nation’s own commitment to struggle it. Surprisingly, the American society has revealed that its determination to fight counterterrorism can be just as inconstant as that of foreign publics. During the past quarter century, the U. S. public and government has given different and co ntradictive attention, priority, and resources to U. S. counterterrorist programs, with interest and efforts increasing in the aftermath of a major terrorist incident and declining as time passes without an attack.International Threats of Terrorism From the critical standpoint, it is clear that even being the world’s only superpower the United States can no longer sustain a war on terrorism. Due to inability of the US to provide detection, monitoring and elimination of 100 percent of international terrorist groups, international cooperation in this area seems to be a promising solution. Moreover, terrorist organizations are now acting across the domestic borders of hosting states, jeopardizing security of entire international community and recent terrorist acts in London’s subway became an evident support for this statement.Brian Jenkins underlines that the success of terrorism has much to do with the perception of a nation’s capability to deal with such crises, proposing that â€Å"public perceptions of government standing and competence in combatting terrorism are based not on overall performance, but rather on performance in a few dramatic hostage incidents, where the government, of course, suffers disadvantages from the outset† ((Jenkins, 1983:10). Indeed, the public sees the government only in crisis, demonstrably unable to provide security for its citizens, sometimes yielding to terrorists to save lives, unable to bring its enemies to justice.Practically, a rescue attempt or successful prevention of an attack adds immeasurably to a nation’s image of military prowess, while an attempt that fails does incalculable damage. Many statistics exist to quantify the activities, numbers, types, locations and targets of international terrorists. It was reported in 1986 that â€Å"incidents of terrorism – those involving citizens or territory of more than one country – have doubled in number since 1975, to slightly o ver 800 last year [1985]† (Hanley, 1986:3).Notwithstanding the bombings in August 1998 in Kenya and Tanzania, there are analysts who believe terrorism has been in decline in recent years. â€Å"Patterns of Global Terrorism: 1997†, published by the American State Department, reported that there were a total of 304 acts of international terrorism, one of the lowest annual totals since 1971 (US Department of State, 1997). According to Patterns of Global Terrorism: 1998, the number of acts of international terrorism dropped to 273 attacks. However, in 1998 there was a record high toll of 741 people killed and 5,952 injured in terrorist attacks (US Department of State, 1998).In 2000, there were 423 terrorist acts, an increase of eight percent from the 392 attacks in 1999. The death toll for 2000 was 405, and 791 were wounded (US Department of State, 1999, 2000). The year 2001 witnessed a dramatic increase due to the audacious attacks on 11 September of that year. Many commen tators agree that terrorist violence is, and will likely remain, an integral part of international relations. As Scotland Yard’s counterterrorist specialist George Churchill-Coleman stated, â€Å"Terrorism is with us now, whether you like it or not. You’ve got to adjust your way of life to that† (Hanley, 1986:3).This mentality has now reached the American scene as the head of the Office of Homeland Security, Tom Ridge, noted, â€Å"We need to accept that the possibility of terrorism is a permanent condition for the foreseeable future. † He stated, â€Å"We just have to accept it† (Calabresi & Ratnesar, 21). At airports there is a â€Å"get on with the job† attitude and in daily living one must accept the need to be on guard, like steering clear of suspicious packages and reporting them to the local police. One columnist wrote, â€Å"By not surrounding the (terrorist) incident with hysterical posturing, we cut it down to size.We make it seem a nuisance rather than a cataclysm. We stifle its capacity to instill terror. We decline to be afraid† (McCabe, 1996a:4). In that regard, Great Britain is one of the few nations which is intimately familiar with terrorism and its impact. Lacking any other alternative, the British have essentially learned to live with the threats and the bombings. Moreover, the British have learned to live with intrusive surveillance cameras, the cost of bomb insurance (3. 2 billion dollars a year), as well as a higher awareness of the threat that has been assimilated into the society over the years, particularly since the late 1960s.Even despite the recent terrorist attacks in London’s subway, â€Å"the British approach to terrorism, developed over many years, seems natural in a culture that places great store on a ‘stiff upper lip’† (McCabe, 1996b:8). The prognosis becomes ever more frightening as terrorists seek out softer targets, as witnessed in the 1998 bombing s of the American embassies in Kenya and Tanzania. This is because international police and security agencies will, for the most part, strengthen the defenses of consulates, embassies and residences, and will provide other forms of personal security for the more likely terrorist targets.Therefore, terrorist attacks will probably become more indiscriminate. The bombing campaigns in Paris during the summers of 1986 and 1995, aimed at government buildings, restaurants and cafes, the bombings in London during the spring of 1992 of commuter train stations and the financial district, and the use of sarin in the subway in Japan by the Aum Shinrikyo in 1995, and the February 2001 reported discovery by the British police of a terrorist plot to release sarin into the London underground system as well as the suicide hijacking of four airliners in September 2001 are examples of what we may expect.(Other examples of indiscriminate terrorism are the strikes at airports such as those in December 1 985, in Rome and Vienna. ) Furthermore, targets abound in highly developed industrialized societies and analysts anticipate that terrorist groups will begin targeting vital points such as â€Å"computer systems, power grids and other key links of industrial societies† (Hanley, 1986b:2). Reports underline that terrorists are expanding their interests in nuclear, chemical, and biological weapons as well as information warfare.Some of these concerns were highlighted in December 1999 when the Solicitor General of Canada, Lawrence MacAulay, told the House of Commons that Canada needed to strengthen the government’s capacity to address the threat of a nuclear, biological or chemical attack by terrorists. Although the possibility of such an attack happening was low, Mr. MacAulay felt all levels of government must be prepared to deal with such eventualities (Evenson, 2001:2).His concerns followed warnings by scientists of the Health Protection Branch that a release of the dead ly anthrax bacteria in a major Canadian population center could kill upwards of 35,000 and cost 6. 5 billion to the health care system, underlining the fact that medical facilities were not prepared to deal with such an incident (Evenson, 2001:2). In the fall of 2001, a series of letters containing the anthrax virus were mailed to media centers in New York City.The letters were sent to ABC, NBC and CBS, and were orchestrated to attain the maximum amount of media coverage, while concomitantly stirring up popular fear and anxiety about these and other possible attacks. Another issue that relates to this is that of nuclear scientists who represent a valuable resource to those nations developing nuclear programs, such as modern Iran. Potential Responses to Terrorism: International Scope The evolution and deployment in the 1970s of elite counterterrorist teams in Israel and West Germany was in response, partly, to the frustrations of employing a series of so-called â€Å"non-force† methods against terrorists.Livingstone has argued that â€Å"governments have employed a variety of nonforce strategies in their efforts to resist terrorism, including diplomacy, negotiation, concessions, and cooptation. Occasionally such methods have worked, but more often than not they have failed or only provided a temporary prophylaxis to an endemic problem† (Livingstone, 1982:176). Now it is widely recognized that, under most circumstances, making concessions to terrorists only invites further acts of terrorism. This fact, combined with the failure of the U. N.to take concerted action to develop effective remedies to the problem of international terrorism, has resulted in a growing tendency on the part of national governments to resort to unilateral military action against terrorism in the belief that, if it is not possible to make terrorists answerable to the law, then they must be answerable to the gun. It is apparent from recent twentieth-century history in Western countries that the responsibility for combating terrorism has been, for the most part, that of law enforcement authorities.On occasion, army units were tasked and, for the most part, were found to be operationally wanting in a number of areas such as strategy, methodology and structure. Conventional military forces and tactics have not met the challenge of terrorism: â€Å"Not only are contemporary weapons and tactics far too destructive to be employed in heavily populated urban regions, but also the deployment of large numbers of soldiers against terrorists simply increases the number of targets at which they can strike† (Livingstone, 1982:176).General George Grivas, the famous Cypriot terrorist leader, noted that the level of terrorist operations is much lower than that of conventional military operations. Counterterrorist operations demand specially adapted and trained soldiers, tactics and strategy. He noted the â€Å"only hope of finding us was to play cat and mouse: to use tiny, expertly trained groups, who could work with cunning and patience and strike rapidly when we least expected† (Taber, 1977:118).In short, one must use those same weapons and tactics belonging to the terrorists’ inventory – psychology, stealth, speed, surprise and cunning – against the terrorists themselves. Moreover, candidates for such units must have motivation and determination, physical and mental stamina, initiative and self-discipline, be capable of operating in small groups during long-term isolated operations, and they must have the aptitude to assimilate a wide range of skills and think laterally. This type of military operation demands a different type of soldier, namely one who can develop a broad spectrum of skills.Practically, contemporary counterterrorism demands highly trained and motivated commandos, operating in small groups; skilled in electronics, communications, demolitions, marksmanship, deception, silent killing; and familia r with terrorist tactics and behavior. References Byman, Daniel (2003). Should Hizballah Be Next? Foreign Affairs 82, no. 6, November/December: 54-66. Calabresi, Massimo, & Romesh Ratnesar (2002). â€Å"Can We Stop the Next Attack? † Time, 11 March, 16–26 Evenson, Brad (2001). â€Å"Canada Poorly Prepared for Germ Warfare. † National Post, 1 FebruaryHanley, Charles (1986a). â€Å"Experts Note Common Traits in Terrorists. † Ottawa Citizen, 19 April Hanley, Charles (1986b). â€Å"International Terrorism: Global Order Shaken by Wanton War. † Ottawa Citizen, 19 April Jenkins, Brian Michael (1983). New Modes of Conflict. Santa Monica, California: Rand Corporation, June. Livingstone, Neil C (1982). The War against Terrorism. Lexington, Massachusetts: Lexington Books McCabe, Aileen (1996). â€Å"Britain Learns to Live with Terrorism after Decades of Blasts. † Ottawa Citizen, 4 August McCabe, Aileen (1996).â€Å"Facing Terror with a Stiff Upper Lip . † Montreal Gazette, 3 August Nash, James L (2004). Prevention or cure. Organisation for Economic Cooperation and Development. The OECD Observer. Paris: May:56 Rothkopf, David (2005). Can Technology Fix U. S. Intelligence. Technology Review. Cambridge: Feb. 108(2) Taber, Robert (1977). The War of the Flea: Guerrilla Warfare Theory and Practice. St. Albans, Frogmore, Herts, Great Britain: Paladin United States, Department of State, Patterns of Global Terrorism: 1997 Retrieved From < http://www. mipt.org/Patterns-of-Global-Terrorism. asp> Accessed Jan 3, 2006 United States, Department of State, Patterns of Global Terrorism: 1997 Retrieved From < http://www. mipt. org/Patterns-of-Global-Terrorism. asp> Accessed Jan 3, 2006 United States, Department of State, Patterns of Global Terrorism: 1999 Retrieved From < http://www. mipt. org/Patterns-of-Global-Terrorism. asp> Accessed Jan 3, 2006 United States, Department of State, Patterns of Global Terrorism: 2000 Retrieved From < http:/ /www. mipt. org/Patterns-of-Global-Terrorism. asp> Accessed Jan 3, 2006

Monday, January 6, 2020

Perception of McDonald’s Essay examples - 940 Words

Perception of McDonald’s McDonald’s has expanded globally into 31,000 worldwide outlets and employed more than 1.5 million people in more than 119 countries (Kulkarni, Lassar, Sridhar Venkitachalam, 2009). Nevertheless, McDonald’s always faces negative perception and commonly related in serving unhealthy and junk foods amongst its customers around the world (Currie, Dellavigna, Moretti, Pathania, 2009). It is not only the negative perception of public, but McDonald’s have been attacked and accused of selling unhealthy food in several countries, including the US, China, Belgium, Holland, India, Russia, Sweden and the United Kingdom (Wilson, 2009). Meanwhile, the core of the current problem is that customers’ still buy fast foods,†¦show more content†¦Since that, customers are interested in the nutritional quality of the food products that they purchase (Louie, Flood, Rangan, Hector Gill, 2008). This is in sequence with Kelley, Bresee, Cranor, and Reeder (2009) survey , which indicated that customers would prefer to have nutritional labels that include more information. Thus, the need of nutrition label has been increased and it should be effectively provided with simple design and appropriate for customers understanding (Feunekes, Gortemaker, Lion, Willems, Lion, Van Den Kommer, 2008). Similarly, Bowman and Vinyard (2004) expressed that, fast food restaurant should display or make nutrition information of foods and beverages they sell available to the customers. Interestingly, as stated by Larson (2009), most customers would like to see nutrition information at places or restaurant they went to. In reducing customer misinformation or wrong interpretation, nutrition label format was revised to improve customer’s usage of it in 1993, as the typical Nutrition Facts panel consists of the following components, such as serving size information, calorie information, percentage daily value (based on a 2000-calorie diet), nutrient information, an d a footnote of recommended daily values for standard 2000- and 2500-calorie diets (Rothman, Housam, Weiss, Davis, Gregory, Gebretsadik, Shintani, Elasy, 2006). On the otherShow MoreRelatedMcDonalds Canda Goes beyond the Im Lovin It Slogan and Fights Media Castigation1352 Words   |  6 PagesMcDonald’s Canada goes beyond the â€Å"I’m lovin’ it† slogan and fights media castigation In early 2012, McDonald’s Canada decided to face a serious problem. The brand reputation was deteriorated and perception scores were hitting low rates. Negative messages were coming from all sides: documentaries, social media and blogs. 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