Wednesday, May 6, 2020
Undiscovered Talent by Denny White free essay sample
Denny White is a composer who writes his own music and lives off of the money from his performances in fancy restaurants to weddings, and private parties. A year ago he met a guy named Brent who was interested in his style and voice. Brent has helped compose some of One Republics music, the hit Good Life was one. He has been promising and has helped Denny meet managers of record label companies who are very interested in his sound. Dennys motivation for being a musician is life and the struggles of being an artist in L.A, hopeful bringing something to those who listen to his music. He is interested in old soul and classical rock music, playing piano is where he is at in his life and hopes to be there for the rest of it. The passion and drive he has for his dream is undiscovered, this helps to push him more than beyond any musician who is known and discovered. We will write a custom essay sample on Undiscovered Talent by Denny White or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page That is a factor that makes his talent so raw and special. His sound is a soft, raspy, light, and angelic tone, singing while playing piano. He composes his own songs and has recorded them, waiting to be signed. His YouTube account shows for his interpretations of certain songs being interpreted through his own style making the music his. He has come far with struggles along the way but has not yet quit. He proceeds to his lifelong dream of becoming a famous musician. He has taught others and myself who listen to his music, that if you have perseverance in life you have hope in being able to reach your goals.
Tuesday, May 5, 2020
Wireless Technology and Security-Free-Samples-Myassignmenthelp
Question: Demonstrate a deep understanding of Wireless Architecture and Security Vulnerabilities using examples and appropriate explanations. Answer: Introduction Wireless technology or communication deals with the transfer of information among several points, which are not connected physically or by any electrical conductor. Use of wireless technology is increasing day by day and people are becoming more dependent on technology for improving the quality of living [1]. The wireless technology enhances the quality of work done and makes the work easier. The most commonly used wireless technologies include WIFI based LANs, RFID, WiGig, Bluetooth, cellular network, WMAN, satellite and others [2]. Wireless Security is the security process that protects the network from unauthorized access or some damage to the system or computer network is the wireless security. Identification Important issues of RFID technology are- The systems of RFID can be disrupted RFID uses electromagnetic spectrums that are easy to accumulate by the use of energy at right frequency [3]. This is not so much useful in stores but these electromagnetic spectrums are highly in use in hospitals or in fields like military. The RFID tags that use battery are interrupted to due to break down of battery which hampers the system. Reader Collision of RFID When signals from more than one reader overlap, then reader collision happens [4]. If such thing happens, the tag cannot respond to queries thata re simultaneous. To avoid this issues, many system uses protocol that are anti collision. Analyzing Security Issues- Even after the item that leaves the supply chain, the RFID tag can be read The scanners of RFID are portable that is they cannot make any difference between different readers [5]. The tags of RFID can be read from a minimum distance that may be a few yard or inches. This enables a person standing some distance from the tag to know all the belongings of the person in his purse. The tags of RFID are difficult to remove Customers face difficulty to remove the RFID tags. This is because they are very small in size or they are inside the product which is invisible for the customers to see. Customers are unable to remove the tags. The tags of RFID can be read without the permission of the owner The codes that are present in the belongings of the customers can be read by any intruder as they can be read from a distance part the person. This creates a problem for customers as others get to know what is present in their purse. With high frequency antenna, RFID tags can be read from a far distance RFID tags are made in such a way so that the tags can be read by the reader at minimum distance between tag and reader [6]. High frequency antennas are used to read the RFID tags from a far distance which leads to an issue. The serial number of the RFID tags are unique and can be sequenced to get the credit card number Products with bar codes used UPC (Universal Product Codes) that are implemented in them used in stores that identifies the product with a unique number [13]. When a product having RFID tag is paid with the credit card, then the credit card number is associated with the RFID tag number that is particular. This can help the attacker to get the number of the credit card. Wireless Network design Fig: RFID Wireless Network Design Source ([7]) The system of RFID has three parts consisting of a transponder which is known as tag, the transceiver that is combine with the reader and the antenna for getting the signals. The radio frequency of the radio is used by the antenna to transfer a signal to the tag which helps to activate the tag also known as transponder [7]. When the transponder gets activated, it sends a back signal to the antenna. The data helps to give a notification to the controller of programmable logic that some actions are to be held. The low frequency systems of RFID work over very short distance which is generally of six feet and a frequency of 30-500 KHz frequency is used. High frequency RFID tag uses about a distance of 9 feet and they are usually more expensive than the RFID systems that work on low frequency [9]. RFID does not need direct contact or scanning in line of sight which give san advantage to the technology. Examples and case study of RFID technology Examples- There is many fields where RFID technologies are used in present days [10]. RFID helps to secure the system where this technology is used. Pharmacy uses RFID chips that are embedded in the container of the drug so that they can avert and track theft of highly expensive and rarely available drugs. The Airlines that are continental used the RFID tags with the luggage of the passengers so that they can be tracked when they are lost and also use to detect the location of the bag is the customer plans to change the flight [11]. The toll road of Australia used the technology of RFID so that the taxes are collected without any person working in the toll office. The department of the U.S. government uses the RFID technology to track the supply shipments of the military. Visa cards are the combination of RFID chips and smart cards so that transactions can be made without using coins or cash. Case Study- Liverpool Hospital RFID Case Study A hospital that is located at a distance of approx 50 minute from Sydney CBD is the Liverpool Hospital. The hospital has a bed capacity of 877 and almost 23 operation theatres. It serves as one of the most vital health care in the western Sydney [12]. The hospital provides services like imaging and diagnostic, trauma care or emergency, surgeries, medical and allied health, mental care health and ambulatory care, haematology, paediatric, cardio care and treatment for cancer also. Before 2013 December, the hospital used hand signed out register that is paper based for bringing products that are related to blood to and out of the fridge of the operating theatre [8]. The staff often not maintains the register or puts an inaccurate data in the register. It created confusion among the staffs if the blood cells that are left unused are put back in the fridge or not within half an hour time. There also created a problem that the blood may go to some other patients who does not need the blood . From December 2013 onwards, the management used the technology of RFID signals to reduce the confusion and risks of the patients. The tags of RFID were used inside the hospital to track the location of the blood and products of blood that were needed by the patients for their safety. Other information related to RFID The technology that happens behind RFID RFID uses electromagnetic coupling or the electrostatic coupling in the portion of radio frequency that is used to transmit signals. There is an antenna, a transponder and an antenna for its working. The transceiver reads radio frequency and further transfers the signal to the reader and RF tag that is used in the system [14]. The antenna contains the integrated circuit for the transmission of the data to the reader that transforms the radio waves from the tag into some digital data that are then passed in the systems for more analysis. The data that are present in the RFID tag have two different parts: passive tags and active tags. The radio frequencies that come from the reader are transmitted to their signals by the help of passive tags. Active tags uses on board battery power to transfer the data signal that can be held over a large distance and also power the RAM. The active tags are much more sophisticated than the passive tags. RFID Frequencies The tuning of the frequency of RFID tags is much similar to that of the tuning the radio stations. There must be a similar frequency between the reader and the tag so that communication can be held. Different types of frequencies are used to communicate in RFID technology. The radio waves or the radio frequency work differently at different frequencies, the frequency of the RFID mainly depends on the application it is used for. There are high RFID frequency systems which can cover a distance of 90 feet and there are low frequency of RFID that covers a distance of maximum of 6 feet. Section 2: The alarming key points that come in the case study of Near Field Communication are firstly the risk of eavesdropping. When other intruder comes in the way of the signal that is transmitted by the sender and receiver and get the data or information is known as eavesdropping. A NFC uses the contactless transfer of information; there is a huge chance of eavesdropping. Secondly, data can be corrupted or disrupted. The attacker in this risk mainly attacks the signal to send back wrong irreverent data or may also block the data that is being transmitted. This type of attack is much difficult to detect. Thirdly, the risk that comes in the way of NFC security threat is that the attacker may act as a middle man between the receiver and the sender. The attacker sits in the middle and sends signal to sender pretending as the signal is from the receiver and vice versa. The risks that come next to NFC is the any harmful application that can be downloaded in the device of NFC can send the data of the users credit card to the attacker. Mobile device has also become a difficult issue related to security in NFC. Attackers may have the passwords and ids of the users phone and can get all the bank details of the user. Another risk that comes in the way is the android beam. It is used to transfer the information from one device to another or from a device to a tag or vice versa. Lastly there exists another security issue related to Nokia phones that are enabled by NFC. These phones enable to pair Bluetooth devices automatically. By default, pins or passwords are not required for the connection. For adopting RFID technology the approaches that can be taken as a network administrator of large organization are: The structure of the organization must be studied very nicely. As a large organization, there must be many groups of people, each of the groups must be studied and the risk that may come in their way. The technology of RFID must be very secure and used high frequency so that any attackers may not attack the technology. Getting the benefits after mitigating the risks. For adopting RFID technology the approaches that can be taken as a network administrator of medium organization are: The RFID technology is evaluated against the strategy of the organization. Getting an outline of the risk and benefits for what a change may happen. To work with the external parties. There must be involvement of the employees. The technology must be prototyped. A suitable RFID standard must be found. Testing must be done. The details of the plan must be documented first. References Amendola, Sara, Rossella Lodato, Sabina Manzari, Cecilia Occhiuzzi, and Gaetano Marrocco. "RFID technology for IoT-based personal healthcare in smart spaces."IEEE Internet of Things Journal1, no. 2 (2014): 144-152 Bartholmai, Matthias, Markus Stoppel, Sergej Petrov, Stefan Hohendorf, and Thomas Goedecke. "Two application examples of RFID sensor systems-identification and diagnosis of concrete components and monitoring of dangerous goods transports."ACTA IMEKO4, no. 2 (2015): 85-89. Bibi, Fabien, Carole Guillaume, Nathalie Gontard, and Brice Sorli. "A review: RFID technology having sensing aptitudes for food industry and their contribution to tracking and monitoring of food products."Trends in Food Science Technology(2017). Boddy, Aaron, William Hurst, Michael Mackay, and Abdennour El Rhalibi. "A Study into Detecting Anomalous Behaviours within HealthCare Infrastructures." InDevelopments in eSystems Engineering (DeSE), 2016 9th International Conference on, pp. 111-117. IEEE, 2016 Borgohain, Tuhin, and Sugata Sanyal. "Technical Analysis of Security Infrastructure in RFID Technology."arXiv preprint arXiv:1505.00172(2015) De Mel, Suresh, Dammika Herath, David McKenzie, and Yuvraj Pathak. "Radio frequency (un) identification: Results from a proof-of-concept trial of the use of RFID technology to measure microenterprise turnover in Sri Lanka."Development Engineering1 (2016): 4-11. Decarli, Nicolo, Francesco Guidi, and Davide Dardari. "A novel joint RFID and radar sensor network for passive localization: Design and performance bounds."IEEE Journal of Selected Topics in Signal Processing8, no. 1 (2014): 80-95. Donker, Tjibbe, Timo Smieszek, Katherine L. Henderson, Alan P. Johnson, A. Sarah Walker, and Julie V. Robotham. "Measuring distance through dense weighted networks: The case of hospital-associated pathogens."PLoS computational biology13, no. 8 (2017): e1005622. Jing, Qi, Athanasios V. Vasilakos, Jiafu Wan, Jingwei Lu, and Dechao Qiu. "Security of the internet of things: Perspectives and challenges."Wireless Networks20, no. 8 (2014): 2481-2501. Liu, Yuqiao, Ariana Levitt, Christina Kara, Cem Sahin, Genevieve Dion, and Kapil R. Dandekar. "An improved design of wearable strain sensor based on knitted RFID technology." InAntenna Measurements Applications (CAMA), 2016 IEEE Conference on, pp. 1-4. IEEE, 2016. Rosenbaum, Benjamin P. "Radio frequency identification (RFID) in health care: privacy and security concerns limiting adoption."Journal of medical systems38, no. 3 (2014): 19. Sabharwal, Ashutosh, Philip Schniter, Dongning Guo, Daniel W. Bliss, Sampath Rangarajan, and Risto Wichman. "In-band full-duplex wireless: Challenges and opportunities."IEEE Journal on Selected Areas in Communications32, no. 9 (2014): 1637-1652. Sari, Arif. "Security issues in RFID Middleware Systems: Proposed EPC implementation for network layer attacks."Transactions on Networks and Communications2, no. 5 (2014): 01-06. Wamba, Samuel Fosso, Shahriar Akter, Andrew Edwards, Geoffrey Chopin, and Denis Gnanzou. "How big datacan make big impact: Findings from a systematic review and a longitudinal case study."International Journal of Production Economics165 (2015): 234-246.
Sunday, April 12, 2020
Benefits of Writing a Short Sample Essay on the Benefit of College
Benefits of Writing a Short Sample Essay on the Benefit of CollegeMany students find it difficult to come up with a short sample essay on the benefit of college. Often students find it difficult to come up with a piece of work that is interesting, concise and that helps them to really understand what college is all about.The use of an essay as part of the college application process can be one of the most important factors that students consider when they are looking for information about colleges. Writing a great college essay can give an applicant a leg up in their application process.It is important to think about writing an essay from the perspective of a prospective student. They should know that if they write this kind of essay then they will be adding to the information provided by other sections of the college application. This will make it easier for admissions officers to write a better essay.The benefit of a college essay is not just about writing a well-written piece of w ork. It is also important to be able to provide enough detail about your experiences that the college admissions officer can build upon to understand you better. This makes it possible for admissions officers to make a good decision on whether or not you will be a good fit for a particular school.Colleges will want to know all of the information that you have gathered about your personal life, education and life experiences. In fact, these college applications are about filling out a lot of information. Knowing what to write about can help the admissions officer to narrow down your choices to a few colleges.Benefits that you can get from writing an essay on the benefit of a college are the following: You will learn a lot about yourself through the writing process. You will develop your own unique style that you can use as part of your college essays and interviews.So write a great essay on the benefit of the college and also try to come up with a unique style for yourself. This will help you get into a better college without going too far off the beaten path.
Saturday, April 11, 2020
How does the diameter or cross-sectional area of a wire affect its resistance Essay Example Essay Example
How does the diameter or cross-sectional area of a wire affect its resistance? Essay Example Paper How does the diameter or cross-sectional area of a wire affect its resistance Essay Introduction I am going to investigate how the diameter, or gauge, of a wire affects its resistance. In order for me to do this, I will need to find as many different diameters of wire as I can. I will cut each one to a reasonable length (probably about 10cm), then connect it to a battery pack and measure the current and voltage (with an ammeter and voltmeter respectively). From these readings I will calculate the resistance, using the formula: R = V / I (Resistance = Voltage / Current) The scale by which the diameter of wires is measured is called SWG (standard wire gauge) which confusingly goes up as the wire gets thinner. However I shall not use this in my graphs, as I do not know enough about SWG to make any worthwhile observations. The gauge of wires can also be measured by their cross-sectional area. Scientific Theory: How does the diameter or cross-sectional area of a wire affect its resistance? Essay Body Paragraphs Some factors affecting the resistance of a wire are: à ¯Ã ¿Ã ½ its temperature à ¯Ã ¿Ã ½ the metal it is made from à ¯Ã ¿Ã ½ its diameter/cross-sectional area à ¯Ã ¿Ã ½ its length In metals, the structure of the atoms and their electrons means that there is a ââ¬Å"seaâ⬠of free electrons (or delocalised electrons) on the surface of a wire that can move around easily, thus conducting the electricity. This is because the outermost shell of a metal atom has a very weak force acting on its electrons. The amount of electrons that can travel determine a materialââ¬â¢s resistance. If there are two wires, one twice as thick as the other, but the voltage is the same on both, then (in the case of the thicker wire) there are twice as many electrons available and so the current goes up. This means that, in the case of the thicker wire, the same voltage is being divided by a larger current ââ¬â therefore the resistance comes out as less. This is the same as if you were t o connect several resistors in parallel in a circuit, as this reduces their resistance too. The greater the cross-sectional area (of a pipe or wire), the less the resistance. This is easily explained in a similar way to water flowing through a pipe. If a pipe has a large cross-sectional area, then more water can flow through at any given time, and it will flow through more easily. I will construct a graph of diameter against resistance and another of cross-sectional area against resistance. I shall expect them to be similar. Range of results: SWG Diameter (mm) 20 0.9 22 0.71 24 0.56 26 0.45 28 0.4 30 0.31 32 0.28 I will refer to the diameter of the wires with their diameter in millimetres as opposed to using SWG (Standard Wire Gauge). According to my scientific theory, this would give my graphs a negative correlation. Prediction: I believe that as the diameter increases, so the wireââ¬â¢s resistance will decrease, thereby showing a negative correlation. This is based on my scient ific theory. Method / Apparatus: various different gauges of wire an ammeter a voltmeter a battery pack crocodile clips Firstly I found the different gauges of wire and cut a 15cm length of each. This was long enough to be useful, but not so long as to be unmanageable. Then I connected the battery pack to the ammeter ââ¬â this was connected in series ââ¬â and then the voltmeter ââ¬â this was connected in parallel. I then used the crocodile clips to connect the wires from the ammeter to the ends of the length of wire. I observed the readings from the meters and recorded them, then used them to calculate the resistance of that particular piece of wire. I repeated this for each gauge of wire. Diagram: Fair Test: In order that my results were as accurate as possible, I made sure that all my wires were made of the same material, Constantan. This alloy (of nickel and copper) maintains the same resistance no matter what temperature it is ââ¬â I used it so that the results w ould not be compromised by the wire heating up and changing its resistance. My wires were all cut to?2mm of the same length ââ¬â this was because the length of the wire could affect the resistance, and the factor I was investigating wasnââ¬â¢t length. Table of Results: Run 1 Run 2 SWG Diameter Voltage (V) Amps (A) Resistance R=V/I Voltage (V) Amps (A) Resistance R=V/A 20 0.9 0.25 1.6 0.15625 0.25 1.6 0.15625 22 0.71 0.16 1 0.16 0.175 1.5 0.11666667 24 0.56 0.6 1.45 0.4137931 0.6 1.4 0.42857143 26 0.45 0.8 1.25 0.64 0.8 1.25 0.64 28 0.4 0.9 1.2 0.75 0.9 1.2 0.75 30 0.31 1.1 1 1.1 1.1 1 1.1 32 0.28 1.2 0.95 1.2631579 1.2 1 1.2 Run 3 Average SWG Diameter Voltage (V) Amps (A) Resistance R=V/A Voltage (V) Amps (A) Resistance R=V/A 20 0.9 0.25 1.6 0.15625 0.25 1.6 0.15625 22 0.71 0.17 1.2 0.14166667 0.168333 1.23333 0.13944444 24 0.56 0.6 1.4 0.42857143 0.6 1.41667 0.42364532 26 0.45 0.8 1.2 0.66666667 0.8 1.23333 0.64888889 28 0.4 1 1.2 0.83333333 0.933333 1.2 0.77777778 30 0.31 1 1.1 0.90909091 1.066667 1.03333 1.03636364 32 0.28 1.2 1 1.2 1.2 0.98333 1.22105263 Analysis: From my results I can gather that my prediction was correct ââ¬â the diameter of a wire does affect its resistance, and in fact (generally) there is a strong negative correlation between the two. I observed this from my graph. I constructed my graph using diameter in mm on the x-axis and Resistance (?, or Ohms) on the y-axis. It showed a negative correlation, but had this weird thing going on at the end ââ¬â an anomaly. I was able to draw quite a clear curve of best fit. The graph proved my theory correct, because as the diameter increased so the resistance of the wire decreased. Evaluation: I believe the experiment was a success, as it proved my theory correct and my graph showed a clear curve of best fit. However there was an anomalous reading, right at the end. This may have been a mistake in reading the meters, or a mistake in calculating the resistance. To improve the accuracy and fairness of my experiment, I could have done the following things: à ¯Ã ¿Ã ½ used a more reliable power source (the power flow from battery packs weakens with use), à ¯Ã ¿Ã ½ cleaned the connections within the battery pack (corroded or dirty connections can affect power flow), à ¯Ã ¿Ã ½ used more accurate am- and volt- meters (i.e. with a greater number of decimal places), à ¯Ã ¿Ã ½ widen my range of results by connecting the circuit to more than one cell of the battery pack, à ¯Ã ¿Ã ½ cut more lengths of wire from different rolls (one roll alone may not be representative of that particular gauge) as defects etc. may affect the results. We will write a custom essay sample on How does the diameter or cross-sectional area of a wire affect its resistance? Essay Example specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on How does the diameter or cross-sectional area of a wire affect its resistance? Essay Example specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on How does the diameter or cross-sectional area of a wire affect its resistance? Essay Example specifically for you FOR ONLY $16.38 $13.9/page Hire Writer
Tuesday, March 10, 2020
Free Essays on One Flew Over The Cuckoos Nest- Not In Our Schools
suggests the fact that the novel was intended to be read but an older more mature audience. There are numerous examples of inappropriate language being used by almost every character in the novel. An interesting fact to point out is that the man that we cheer for, McMurphy, the protagonist of the book is the one who uses this language most often. He is the one person that we learn to love because he stands up to the authority figure, Miss Ratchet. All the people in the ward want to be like him and we are made to feel this way as well. McMurphyââ¬â¢s behavior promotes rebellion against authority which if acted upon can put our society in a state of utter chaos, as seen in the ward. Violence and disturbing behavior are also in abundance in this novel. There are a number of accounts of disturbing behavior, this consists of the nurse trying to intimidate and embarrass the patients to keep them under control. It shows that a single person can control many through manipulation and carefully thought out actions. It is amazing that she can keep these patients in the ward even though the want to leave and can leave freely at any time. She has such a strangle hold on them, making them rely on the ward to survive. Itââ¬â¢s through her manipulation and tr... Free Essays on One Flew Over The Cuckoo's Nest- Not In Our Schools Free Essays on One Flew Over The Cuckoo's Nest- Not In Our Schools One flew over the cuckooââ¬â¢s nest is a well written and provocative novel, that has no place in our schools. The novel should not be permitted in our schools because the language is offensive, there is an abundance of violence and disturbing behavior, and it shows no positive side aspect of not only life in a ward but also of society. The language in one flew over the cuckooââ¬â¢s nest is atrocious and vulgar. The language that the author uses to convey the feelings of the patients and members of the ward is degrading and unnecessary. There are numerous opportunities for the author to portray his mind-set and the mind-set of the characters with the use less offensive words. The use of these words suggests the fact that the novel was intended to be read but an older more mature audience. There are numerous examples of inappropriate language being used by almost every character in the novel. An interesting fact to point out is that the man that we cheer for, McMurphy, the protagonist of the book is the one who uses this language most often. He is the one person that we learn to love because he stands up to the authority figure, Miss Ratchet. All the people in the ward want to be like him and we are made to feel this way as well. McMurphyââ¬â¢s behavior promotes rebellion against authority which if acted upon c an put our society in a state of utter chaos, as seen in the ward. Violence and disturbing behavior are also in abundance in this novel. There are a number of accounts of disturbing behavior, this consists of the nurse trying to intimidate and embarrass the patients to keep them under control. It shows that a single person can control many through manipulation and carefully thought out actions. It is amazing that she can keep these patients in the ward even though the want to leave and can leave freely at any time. She has such a strangle hold on them, making them rely on the ward to survive. Itââ¬â¢s through her manipulation and tr...
Sunday, February 23, 2020
Appropriateness of Assessment Tools for the Achievement Of Literacy Essay
Appropriateness of Assessment Tools for the Achievement Of Literacy Goals - Essay Example The level of literacy that an individual should acquire is a matter of personal choice depending on his or her inclination and the role that he or she will be required to play in society. This offers scope for learning choices with regards to the tools of learning. This compels the teacher to personalize his or her pedagogy to meet the needs of the individual learner in the group. Training in literacy should be connected to actual use of it in real-time situations. The social context in which we live is democratic and multicultural and literacy training should take into consideration these aspects of our society. A comprehensive literacy assessment should test whether these tasks are fulfilled in actual end product of instruction. Based on the realization students develop on a dynamic continuum and they have different rates of progress, teaching should be tailor made to suit the needs of individual learner. Dr.Bonnie Campbell Hill has analyzed the levels of achievable benchmarks for different age groups and the level of competencies that students should have in that age. By bringing also the parents as active partners he has reiterated the concept that learning is a social activity that extends beyond the four walls of the classroom. The benchmark books are chosen by Dr.Hill to give the student a chance to relish reading and experience success (Hill, 2001). Page 3 Assuming that we have a curriculum that is apt for the American student, the effectiveness of the learning process will depend on the tools of assessment that are employed by the teacher. Standardized tests are inadequate as diagnostic tools. This is because they provide only final answers, record scores in numbers, and are administered to a group. They do not give any clue to the skill of the learner in problem solving. Standardized tests do not accommodate the individual differences of the learners. American society is multi-ethnic and standardized tests do not take into account this aspect of our culture. According to Wagner, Assessment methods do not need to be major entrepreneurial enterprises, but rather just robust enough to answer key policy questions at the national and local levels (Wagner, 2003). In order to make learning effective the approach should be primarily learner centered. The child, its parents, the community and the need of the American Society for resources should be the main factors of consideration. The education research around the globe has developed what is called the authentic literacy testing movement and Page 4 American educators have whole-heartedly embraced this methodology because of its interface with the American reality. One important tool that can deliver results is the student portfolio. In this method learner's activities are documented throughout. These include short paragraphs, essays, longer writing samples as well as collections of student-authored books, videotapes of plays written and produced by the class. This portfolio does not capture a moment of student's performance; it gives a wider view of the stage-by-stage
Thursday, February 6, 2020
Medicine and Mathematics Essay Example | Topics and Well Written Essays - 750 words
Medicine and Mathematics - Essay Example This can, probably, be a meticulously suitable premise of physiology which is a quantitative science. Today, mathematics is applied in the every-day life while facilitating health care for people around the world. Statistical graphs of epidemics, success rates of treatments, X-rays and CAT scans are some of the examples where mathematics is applied by all mathematical professionals. CAT Scans are one of the most advanced ways in which medical veterans bring math into use. A CAT scan is a special kind of x-ray known as a Computerized Axial Tomography Scan. A standard x-ray is capable of providing with a two-dimensional view of a specific part of the body. Further, if a smaller bone is concealed amidst the x-ray machine and the larger bone, it is not possible to view the smaller bone which is like a shadow (Article, 2009). The process has developed commonly and it is quite difficult to understand the way it has developed into a miracle. CAT scan has the capability of providing an image of what a real segment would look like, however, without any real slicing (Phillips, 1999). This technique is strongly reliant on the X-ray penetrability of various tissues, similar to the conservative X-ray imaging. However, the difference lies with the fact that here, as an alternative to a single 2-dimensional X-ray image, a sequence of 1-dimensional X-ray images, which is clicked from various angles, is coalesced again mathematically into a single image of a 2-dimensional segment. Mathematics allows the reconstruction of a 2-dimesional cross-section of an entity from a sequence of 1-dimensional samplings of similar density. This technology is called the Radon Transform (Phillips, 1999). 2.2 Analysis of DNA DNA filaments are comprised of a number of joint molecules called nucleotides. Particular groups of these molecules tend to perform definite functions that are known as genes which reside in the nuclei of cells. Genes are comprised of codes for manufacturing essential substances for the body. With efficacious coding for proteins, genes have the propensity of recognizing the sequence of events which produce the traits of bodies, such as from blue eyes to blond hair, or even allergies. The passage of genes through generations helps passing on the traits as well. In case of alteration of the genes, traits are altered too, often leading to harmful results. Fascinatingly, segments of DNA tend to break and unite, thereby, scuffling the order of genes. As a result, for the reason that such changeovers possess mathematical prospects, there are various features of DNA which can be derived by knowing such prospects (Casey, 1992). Here, mathematics matches genetic sequences and such researches give way for many other aspects of genetic research as well. 2.3 Molecular Modeling Various algorithms have been deduced for molecular modeling
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