Review article Example | Topics and Well Written Essays - 250 words - 12

Review - Article Example There is ample background information on the genes that contribute to the biological clock in drosophila. These include the period (per) and timeless (tim) clock genes. In addition, drosophila that lack photoreceptive organs have been observed to transmit light information to the clock (Plautz et al., 1633). This indicates the existence of unidentified circadian photoreceptors in the insect. Each of these three segments exhibited rhythmic bioluminescence in light dark conditions. When the conditions were changed to constant darkness, a gradual decrease in amplitude was observed (Plautz et al., 1633).The cultures managed to reentrain to a new light dark cycle where the onset of light occurred 6 hours later than the free-running subjective dawn. The process of reentrainment happened in a cycle and the main biolumiscent peak declined 20 hours after lights-on. These findings show that other organs such as the legs, wings and testes in drosophila express photoreceptors. After reviewing the article, the following research questions can be formulated. First, expression of per gene in the tissues displaying photoreceptive activity needs to be investigated. Secondly, a comparison needs to be made on the expression of per and tim genes in the tissues displaying photoreceptive

Landmines in Vietnam and War Research Paper Example | Topics and Well Written Essays - 1250 words

Landmines in Vietnam and War - Research Paper Example Claiming over five hundred victims a week, landmines are weapons of mass destruction in slow motion† (Relief Web 2011). It can be clearly seen that landmines have become a threat in the society and should be removed on humanitarian grounds. U.S participation in Vietnam was extremely controversial and consequently it was considered to be an awfully unstable country during the late 1950’s and 1960’s. All through the Vietnam War, landmines were utilized by the United States plus the North South Vietnamese military. Majority of the landmines were placed intentionally and were created commercially by china and the U.S, yet, as a minimum one- third of these were made spontaneously by locals. These landmines that Vietcong made were formed on the battleground with bamboos and volatile weapons of American armaments that did not detonate. Since the nature of the Vietnam War was guerilla, the conventional blockade theory of the landmine was no more applicable so as a result the armed forces invented a new use for those landmines. These landmines were released from the planes to occupy bigger areas as scattered landmine orderliness put in a new aspect to the grounds of mine war. According to Sarah Elizabeth â€Å"properly employed, scattered landmines provides the commander with a rapid, flexible and effective means for delaying, harassing, containing or canalizing the movement of enemy ground forces while simultaneously reducing the significant manpower and material requirement previously associated with the employment of landmines† this new method altered the use of landmines from being a protective and defending weapon to an offensive one. Landmines are distinctively ferocious in the time of recent or traditional war not just for the reason of their horrifying personal effect, but additionally because of their lasting societal and monetary obliteration. The Vietnam Battle rutted America opposed to communism and was an unforgettable model of a conflict that can be identified as a cold war. The mere thought of Vietnam beginning the procedure of changing to communism was unacceptable to America. As Johnson on 17, March, 1964 issued the national security memo that stated â€Å"to pressure an independent, non-Communist south Vietnam which is necessary to prevent all Southeast Asia from turning communist and prove to the rest of the world that communist wars of national liberation could be curtailed.† This statement eloquently provided the reason for the war in Vietnam and encouraged and intensified the American involvement (Smits 2007). By dropping these landmines from the plane the U.S military gained an advantage since they were able to scatter it over a large area. Moreover this new technique needed very less manpower since it only required a trained pilot. These landmines were positioned inside the territory of the enemy without the possibility of causalities of the American force. According to Mc Grath â€Å"usin g landmines as an offensive weapon by dropping them from airplanes enshrined the area-denial philosophy into military thinking.† The area denial viewpoint initially executed the region’s larger areas under war, futile to the opponent by layering it with weapons. It was anticipated that in 1965, seventy percent of sea killing was the consequence of the landmines and additional entraps created from these weapons. Vietnam

Network Security Architecture Research Paper Example | Topics and Well Written Essays - 250 words

Network Security Architecture - Research Paper Example When analyzing the vulnerability of a WLAN, it is crucial to identify the trusted and un-trusted parts. The security edge in the Centralized approach is the WLAN switch. Here, the Access Points lack strong encryption or authentication technology hence making it vulnerable to rogue inappropriate communication between APs. In Distributed Architecture, on the other hand, security is extended to the client devices where strong encryption occurs at both the APs and client devices along with authentication. This makes attacks more difficult because the security edge is closer to the users. In this case, a Distributed Architecture can be considered more superior to the centralized architecture as the APs handle the packets and only traffic management needs to go to and from a central point. Careful planning, implementation and management are needed to eliminate WLAN security risks in an organization. This can be aided by establishing security policies and practices, separating internal networks logically, eliminating unnecessary protocols, protecting wireless devices, restricting AP connections, enabling VPN access only, among other

Determining acceleration due to gravity using a simple pendelum Lab Report

Determining acceleration due to gravity using a simple pendelum - Lab Report Example ttl 19). This is due to earth’s radii changes caused by both altitude and latitude variations as one moves to the poles whereby distance to the crust continues to decrease. This is because at the poles the surface is flattened compared to the equator where there is bulging due to a large radius, which is the reason behind an individual’s location being the determinant of g. In quest to find g, this experiment utilizes the following formula, T = 2? / ? = 2? v (L/g) = 2? v (L/g) by rearranging g = 2?L / T2 Methodology Experiment Materials required Piece of string, which is lighter such that its weight is negligible Hook Pendulum or bob Stopwatch Meter rule or tape measure Supporting board for hook Steps to perform experiment The first step entailed setting up the experiment. This is by hanging pendulum or bob using a string from the supporting board where there is a hook, then adjusting L to approximately 50cm or appropriate length that will act as the initial value. Then displacement of a pendulum using a certain angle before released to swing back and forth took place. It was essential to ensure motion in this case was vertical instead of erratic elliptical, which mostly develops due to inappropriate displacement. Timing was at intervals of 10 oscillations for each chosen L until it reached about 125cm and having at intervals of 15cm, then tabulating obtained data. Data values were L, T and angles. After tabulation, calculation commenced to ascertain T2 and g values. Recording of data included g and its mean values besides standard error deviations. The last step encompassed plotting of L vs. T2 graph with the intention of ascertaining its slope, which was the value for g (Serway, Jewett & Vahe? 465). Results Table 1: Data Results L (M) T50 (S) T (S) T (S) T (S) T (S) T2 (S2) g (M/S2) 50 65 80 95 110 Discussion Formula and effects on experimental accuracy Based on the experimental results, error in L prompts a linear relation error in any resultin g value of g. This implies suppose there was a 10% error in value of l, it will reflect an erratic value of g having a margin of 10%. In addition, an error in g exhibited a squared or parabolic relationship with error evident in the value of T. Suppose T had an error bearing a margin of 10%, this will reflect 21% value of g. This is because 1.10 x 1.10 = 1.21 Controlling and measuring length String used in this experiment was light together with heavy mass. The purpose of the latter was to ensure the center of pendulum’s oscillation system was as close as possible to the center of the mass of fishing sinker. Then calculating mass of the string compared to that of the sinker commenced. There was also a need to increase the length of the string to ensure less percentage error restricted by 8m measuring tape (stairs were approximately 15m high). Accuracy’s margin was set at  ±5 or approximately 0.07% over 7.5m. It entailed one hour to wait for effective completion of st ring’s stretch and twist caused by the suspended mass, which was a lot of time. To rectify this problem in the next experiment, it would be essential to use a light string as well as measuring stretch before starting. Calculation of maximum centripetal acceleration commenced with the aid of angle created by pendulum (where PE converted to KE). However, this affected both string and accuracy of the data due to unknown stretch

Interview Questions Essay Example | Topics and Well Written Essays - 750 words

Interview Questions - Essay Example I would be looking into valid reasons and even pry on the previous academic records. If previous records indicate that the standard GPA was met (which I assume it was since the student is already a sophomore student and would not have been admitted to the course due to the minimum admission criterion), I would determine the reasons for the apparent decline. Could there be stressful and challenging external factors that could have contributed to the decline other than failure to study or deliberate non- submission of academic requirements? If there are, I would seek the student to submit proof of circumstances that might have contributed to the lack of focus on educational pursuit. Likewise, I would like to know if the student is determined and committed to graduate from the course. If not, I would immediately advise that the student be taken out from the program. If, there is evidence that the student tried hard to attain the standard GPA, but mitigating circumstances that could not have been avoided, I could give the student another chance – provided that the standard GPA would be met next semester. Finally, I would determine what strategies were planned by the student to improve the academic performance in the coming semesters. 2. What role does technology and social media (such as Facebook, instant messaging, video conferencing, blogging, Twitter, podcasts, etc.) have in the adviser/student relationship? How do they help? How do they hinder? In contemporary generation’s academic pursuit, the role that technology and social media plays in the adviser/student relationship is crucial and significant. One strongly believes that both students and educators maintain registered accounts with social networking sites that could be utilized to exchange information, relay academic messages, and be used as a medium for enhancing much needed information, as required from the course. As proven from the research conducted by Lin (2011) and published in the Jo urnal of Online Learning and Teaching, the findings revealed that â€Å"integration of online activities into traditional teacher education courses can shift some of the power, authority, and control from the instructor to the learner while providing the interaction and connection that are central and valuable to traditional classrooms† (p. 99). Thus, technological applications and social media help in fostering a more conducive learning environment by encouraging active interaction and participation of course modules. As emphasized, â€Å"it used technology to increase interaction among students, increase engagement in learning and established a learning community outside of the classroom, while allowing individual contributions to be identified and evaluated† (Lin, 2011, p. 106). On the other hand, these networking sites could also hinder effective academic performance if the adviser or educator fails to provide a more vigilance and pro-active oversight to govern and validate student’s performance. This simply means that educators must have ways and means to discern that it is the students themselves who responded to the required academic requirements. 3. The media landscape is evolving. How do you approach advising a current student to prepare for a job market that is ever changing? As the media landscape was acknowledged to be continually evolving, students who prepare to hunt for job opportunities must exercise

Situation analysis in marketing planing Essay Example | Topics and Well Written Essays - 1500 words

Situation analysis in marketing planing - Essay Example ?†¦.. 4 Marketing Mix elements †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 5 The customers †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 6 Unique Value Proposition †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 6 External Analysis †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 7 The Market Extent †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 7 Competitor Analysis †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 7 The Economic Environment †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 8 T echnology Environment †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 8 SWOT Analysis †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 9 Conclusion †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. ... As Armstrong and Kotler (2005, p. 6) stressed, marketing deals with customers more than any other business function and therefore building customer relationship based on customer value and satisfaction is at the very heart of modern marketing. This paper presents a brief report based on the marketing analysis of the Pizza Restaurant, to be located in Riyadh, Saudi Arabia. This piece of paper relates to various marketing concepts and principles such as marketing vision, marketing mix, customer analysis, internal and external analysis and marketing strategies with regard to Pizza Restaurant. Situation Analysis (Internal to the company) Company’s mission, objectives and growth strategies The Pizza Restaurant aims to contribute to human needs by delivering quality pizza-foods and drinks and to enhance healthier food and joyful environment to help its customers find their entertainment needs to be satisfied. Armstrong and Kotler (2005, p. 42) emphasized that a statement of an organ ization’s purpose- a mission statement- must be able to define the business in terms of satisfying basic customer needs. For Pizza Restaurant, its customers are rich hippies and business or other professionals from Riyadh who come to meet their needs of hunger, thirst, joy and leisure entertainment. Company will value their needs, their responses and their varying requirements and thus it will design different services and quality multi-cultural organic food items in order to satisfy its customers. Main objectives of the company are establishing customer focus strategy, maintaining customer loyalty, ensuring long-term profitability and thus achieving sustainable competitive advantages. In order these objectives to be achieved, the

Phonetics and you can find every thing in the slide Essay - 1

Phonetics and you can find every thing in the slide - Essay Example The fact that there is evidence of both a voiced /É £/and voiceless /x/ velar fricative occurring in the same environments anticipates they are phonemes, and that a voiced counterpart to the labio-dental /f/ and alveolar fricative /s/ would also be found with further data. Evidence also suggests that although the voiced and voiceless pairs of velar fricative phonemes exist they are not found in all situations; for example, /x/ and /É £/ occur directly before the back mid vowel /o/ and the low vowel /a/ but not before the high /i/ and mid /e/front vowels and are thus in complementary distribution, wherein we find a voiceless alveolar fricative [ÊÆ'] or its voiced counterpart [Ê’]. It is likely therefore, that the voiceless velar fricative /x/ becomes alveolar [ÊÆ'] before front vowels /i/ and /e/, while its voiced partner /É £/ also becomes alveolar [Ê’] in the same situation, both of which therefore are allophones not phonemes. Within the dataset provided it could be predicted that [m] is an allophone of /n/ because [m] only occurs word initially and /n/ only occurs between vowels, but because of symmetry it is more likely they both occur as phonemes – within this same argument there may be a velar nasal /Å‹/. Another allophone evidenced in the data is the alveolar trill [r] which is only found inter-vocalically preceding two vowels - in other words a diphthong. It can thus be assumed that the flap or tap /É ¾/ becomes a trill [r] before a diphthong. The difficulty in terms of interpretation in this data set is whether the post alveolar affricate [tÊÆ'] is a phoneme or an allophone; for want of further evidence and because both the voiced and voiceless post alveolar fricatives occur in the same environment as the post alveolar affricate it is suggested that it is an allophone of /k/ in keeping with the symmetrical pattern of each velar phoneme having allophones preceding front