Wednesday, August 21, 2019
Factors Affecting Contrast In An Xray Image Health Essay
Factors Affecting Contrast In An Xray Image Health Essay To test resolution, a line pair guage is used. To measure MTF in an x-ray system, the sine wave equivalent of a line pair gauge is used. The closest distinguishable pair of cycles determines the best MTF, it is quoted in cycles per mm [2]. A common way to express the system resolution is to quote the frequency where the MTF is reduced to either 3%, 5% or 10% of the original height [3]. MTF and spatial frequency are related by MTF curves. Examples of MTF curves are given below; Mammography System: Fig 2: MTF curve for a mammography system [4]. Chest Radiography System: Fig 3: MTF curve for a typical chest X-ray. Three different detector types are indicated on the plot [5]. Fluoroscopy System: Fig 4: MTF curve for a Fluoroscopy system with plots shown for individual components of the imaging process. The film and the optics have excellent resolution. The MTF of the imge intensifier is shown to have a limiting resolution of approximately 4.8 cycles/mm. The TV camera is the worst in the series, it limits the MTF of the overall image during live fluoroscopy and videotaped imaging. [6] Question 2: Contrast is the variation in brightness or optical density across an image. Factors affecting contrast in an x-ray image include the tube output, or the kVp. This is a measure of the energy of the x-ray beam leaving the x-ray tube and passing through the patient to form an image. X-rays with higher kVp can penetrate deeper into materials. In an image with the correct kVp bone is white and soft tissues and air are gray/black. If the kVp is too high, the x-rays will pass through even dense bone, creating an image that is mostly black with indistinguishable features [7]. The opposite occurs when a kVp which is too low is used. The most suitable kVp depends on the feature under investigation. Also among the factors affecting the image contrast is the patient. The density, the atomic number Z and the thickness of the part of the patient being imaged. Denser tissue, tissue with higher Z or tissue of a greater thickness results in lighter areas on the image because they have blocked the x-r ay from exposing the image receptor. Variation in contrast occurs because tissues in the body attenuate x-rays differently. The human eye can percieve a difference of approximately 2% in contrast between adjacent areas [8]. The final influence on image contrast to be discussed here is the image receptor. In film imaging, the contrast of the resultant image depends on the sensitivity of the film used. To produce an image with the correct contrast, a film with corrresponding sensitivity must be chosen before imaging. In digital imaging, there is no fixed sensitivity. It has the advantage of being able to record the full range of exposures and digital processing after imaging can be used to improve the contrast in the image. Image contrast can be evaluated using a densiometer. This device emits light of a known energy. The light is reflected back from the image and detected by the densitometer. The difference in energy between emitted and detected light is used to compute the optical density (blackness) in that area. Since contrast is the variation in optical density, this method can be used to survey the contrast in the image. Question 3: The following description is based on an article from the NDT database [9]. Spatial resolution of an x-ray system is limitied by the size of the focal spot. Fourier analysis can be used to calculate the focal spot size. X-rays are passed through a test object with a known pattern. This test object is placed between the x-ray source and detector, the arrangement is shown in the figure below. The focal spot of the x-ray is not assumed to be point-like, as the detector is moved away from the source, the detected focal spot appears larger. Blurring of the image by the detector is included, this blurring is related to the point spread funtion (psf) of the detector. Otherwise, an ideal detector is assumed. Image deterioration due to noise is also factored into the description. Fig 5: Setup for determing the focal spot size. The X-ray source, the flat object, and the intensity distribution measured at the detector system lie in different planes for which different coordinate systems with the variables (x, y), (x, y) and (x, y) respectively, are used. This is done in order to include magnification effects in the calculations. The measurement of the x-ray transmission, t, is derived mathematically. This is done by convolving the intensity distribution of the focal spot f with the transmission profile of the flat object g and the detector point spread function d. Also, t is deteriorated by noise, which is taken into consideration by addition of a noise term n to the result of the convolution. In order to take into account the geometrical magnification, V, of the setup, these functions are represented in one of these planes (here the plane of the detector), whereby the physical magnification effects of the setup were observed before the convolution is accomplished, this is shown in the second part of the equation below. The magnification is the distance between the source and the detector system divided by the distance between the source and the object. The Convolution Theorem states that the Fourier transform of a convolution is the product of the Fourier transforms. Conversely, the Fourier transform of a product is the convolution of the Fourier transforms. Using the above equation, a deconvolution of t with gâ‚ ¬Ã‚ (â‚ ¬Ã‚ d yields an estimate of f. In a technique like this, a suitable test object is measured. The resulting image corresponds to a convolution of the test object with the intensity distribution of the focal spot and other factors. Information on the focal spot is derived from this measurement using knowledge on the test object and other influencing values which means that the convolution process is undone to a certain extent. Also, with the presented method an arbitrary two dimensional intensity distribution can be measured, regardless of shape. According to the convolution theorem, a convolution in the spatial domain corresponds to a point-by-point multiplication in the corresponding Fourier domain. Furthermore, according to the addition theorem, an addition in the spatial domain corresponds to an addition in the corresponding Fourier domain. (Note: lower case letters represent functions and upper case letters represent the Fourier transforms of the equivalent functions.) The initial equation now becomes; At certain spatial frequencies | N | can be significantly higher than| F Æ’-â‚ ¬Ã‚ P |. At these spatial frequencies division of T by P mainly increases noise and deteriorates the image quality. This is due to the fact, that information on F is lost at these spatial frequencies. For that reason, independently of the deconvolution method applied, all spatial frequencies which are contained with high intensity in | F | should be contained with high intensity in |P| in order that | FÆ’- P | is significantly larger than | N |. This means that the test object (in combination with the detector imaging properties) should contain the major spatial frequencies which are required to describe the focal spot with sufficient intensity. In this case F can be restored well at these spatial frequencies, which yields a good estimate of f. Question 4: Using a bar phantom similar to that used for determining resolution can lead to an error determining the focal spot size. This is because the line pairs are aligned in one direction only. For accurate measurement of the focal spot size, many images with the bar phantom at different angles would be necessary [10]. To overcome this problem, a star phantom is used. This is a disc of alternating Lead spokes and x-ray transparent material. At a particular diameter of the focal spot the image of the spokes blurs, i.e., adjacent spokes cannot be distinguished from each other. The diameter of the blur is an indication of the focal spot size [11]. Fig 6: Star pattern for testing focal spot size [12] Question 5: 5a. The most obvious parts of a CT scanner are the moving patient table and the gantry or tube. Conventional projection radiography is limited because it collapses 3D objects onto 2D images. CT has a rotating system of emission and detection and so it can give accurate 3D diagnostic information about the distribution of structures inside the body. Inside the gantry there is the X-ray tube, x-ray detectors and slip-rings. The X-ray beam is collimated and radiates in a fan-beam shape. The x-ray emitter and detectors rotate in the gantry to measure projections that form an image that is a slice though the body. There are brushes around the rotating slip-rings to transmit signals. In CT, the linear attenuation coefficient, ÃŽÂ ¼ is measured. This tells how much intensity is lost as the beam travels through the medium. This distribution of ÃŽÂ ¼ is the basis of image formation. There are two distinct motions of the x-ray beam relative to the patients body during CT imaging. One motion i s the scanning of the beam around the body. The other motion is the movement of the beam along the length of the body. This is achieved by moving the body through the beam as it is rotating around Fig 7: External appearance of a CT scanner. [13] Fig 8: Basic schematic of the construction of a CT scanner. Fig 9: CT image quality and electromechanical acceptance tests. The Priority column indicates which of the tests are the most important. [14] 5b. CT images are formed by multiple intersecting projections. This is illustrated in the figure on the left. In the bottom right section, it is seen that the combination of the projections causes blurring in the final image. The blurring goes as 1/r, i.e., it is proportional to the distance from the centre point. The 2D Fourier transform of 1/r is 1/à  . Since the inverse of 1/à  is |à  |, it is possible to compute the 2D Fourier Transform of the blurred image, multiply the Fourier transform of the resultant image by |à  | and the calculate the inverse Fourier transform to obtain a sharper image [15]. Fig 10: On the left, unfiltered back projections and on the right, filtered back projections. The conversion is done in the spatial domain by convolving the projection with the IFT of |à  |. Fig 11: The mathematics of the image reconstruction process, can be expressed compactly in the above equation, where the terms have been grouped to reflect the filtered-back-projection approach [15]. 5c. The fundamental system performance indicators are CT number, resolution, noise, and patient dose.26 The accuracy of CT numbers is measured by scanning a water-filled phantom at least monthly. The CT number for water should be zero over a 20-cm-diameter phantom, with a variation of less than 1 CT number. Deviation from the expected CT number of 0 for water at any energy is adjusted by applying a correction factor for the pixel value. Constancy of the value should be monitored with a daily scan. An overall check of system performance is obtained from semiannual measurements of CT image noise, defined as the standard deviation of CT numbers in a region of interest. Constancy of performance is checked by evaluation of the standard deviation in the daily water scan mentioned previously. Resolution is measured by scanning phantoms on a monthly basis. Of particular importance is low contrast resolution, which is a sensitive indicator of changes in component performance as they affect noise. Patient dose is evaluated semiannually. Specially designed ionization chambers provide measurements from which the dose may be calculated for the exposure conditions (narrow beam, variable slice thickness) used in CT. The values should agree with manufacturers specifications to within 20%. [hendee]
Tuesday, August 20, 2019
History Kennedy :: essays research papers
I. Kennedy and The Cold War      A.The Election of 1960- As President Eisenhower's 2nd term drew to a close, a mood of restlessness arose among voters.           1.Kennedy and The Canidate-Kennedy intered the race with a well-organized campain, the backing of his large family, and a handsome look and charisma that appealed to voters.           2.Televised Debate- a milestone of the campain was the 1st televised debate ever between presidental canididates.           3.Kennedy and the King-Hearing of King's arrest, Kennedy called King's wife.      B.Crisis of Cuba-The 1st test of Kennedy's foreign policy came 90 miles off the coast of Florida.           1.The Cuban Dilemma-Castrode to power on the promise of democracy.           2.The Bay of Pigs-1960, President Eisenhower gave the CIA permission to secretly train hundreds of Cuban exiles.           3.Cuban Missile Crisis-Castro had a powerful ally in Moscow - Soviet premier Nikita Kruskchev.      C.Tragedy 'n Dallas-No one could presee that a terrible national tradegy lay just ahead.           1.Four Days in November-Kennedy was shot in the head.           2.Unanswered Questions-The Warren Commision concluded that Kennedy had been shot by Oswald. II.The Great Society      A.LBJ's Path to Power-His ambition and dive had become legendary.           1.From Texas Hills to Cap. Hill-LBJ grew up in Texas.           B.Joshson's Domestic Agenda-Americans began to solve national problems.           1.War On Poverty-August 1964, Congress enacted the economic oppertunity act           2.1964 Election-LBJ won by a lanslide.      C.Building The Great Society-In May 1964, Johnson had summed up the grand vision for america in a phase.           1.Landmark Legislation-Johnson considered education the key to success. III.The Continuing Cold War      A.The Election of 1945- As President Eisenhower's 2nd term drew to a close, a mood of restlessness arose among voters.           1.Kennedy and The Canidate-Kennedy intered the race with a well-organized campain, the backing of his large family, and a handsome look and charisma that appealed to voters.           2.Televised Debate- a milestone of the campain was the 1st televised debate ever between presidental canididates.           3.Kennedy and the King-Hearing of King's arrest, Kennedy called King's wife.      B.Crisis of Cuba-The 1st test of Kennedy's foreign policy came 90 miles off the coast of Florida.           1.The Cuban Dilemma-Castrode to power on the promise of democracy.           2.The Bay of Pigs-1960, President Eisenhower gave the CIA permission to secretly train hundreds of Cuban exiles.           3.Cuban Missile Crisis-Castro had a powerful ally in Moscow - Soviet premier Nikita Kruskchev.      C.Tragedy 'n Dallas-No one could presee that a terrible national tradegy lay just ahead.           1.Four Days in November-Kennedy was shot in the head.           2.Unanswered Questions-The Warren Commision concluded that Kennedy had been shot by Oswald. IV. The New Frontier      A.The Camelot Years- President JFK's inauguration set the tone for life a new era.
Monday, August 19, 2019
A Clockwork Orange, by Stanley Kubrick Essay -- Film Analysis
A Clockwork Orange is a Stanley Kubrick film from 1971. Kubrick directed the film and wrote the screen play based on the 1962 novel from author Anthony Burgess. A Clockwork Orange was originally rated, â€Å"X†and nominated for Best Picture, Best Director, Best Film Editing and Best Screenplay, but lost in each category to William Friedkin's The French Connection (filmsite.org). The set design is by John Barry, costume design by Milena Canonero, music by Wendy Carlos and cinematography by John Alcott. A Clockwork Orange was awarded the New York Film Critics Awards for Best Film and Best Direction (FilmReference.com). Distributed by Warner Brothers, the estimated budget was $2,200,000 with a Gross of $26,589,355 in the USA alone (IMDb.com). Most notable of the cast are actors Malcolm McDowell, Patrick Magee and Michael Bates. According to film critic James Berardinelli, â€Å"A Clockwork Orange is not an easy motion picture to absorb or digest.†Oddly, the sex and violence are easier to take than the razor-sharp edge of Kubrick's satire and the corresponding awareness of its pinpoint accuracy when addressing the issue of the dehumanization of people†(Berardinelli). Roger Ebert thought the movie was overhyped compared to its worth. He felt that the movie was an artistic sin. â€Å"It is just plain talky and boring. You know there's something wrong with a movie when the last third feels like the last half†(Rogerebert.com). The audience reactions all seem to say the same thing: â€Å"Brilliant movie†, â€Å"a gem of an art piece†, â€Å"sensational†, â€Å"the number one film of all time on my charts†(IMDb Reviews), with many claiming that it has to be watched more than once to truly appreciate the film. The movie has earned a 91% "Certified Fresh" ra... ...D=/19720211/REVIEWS/202110301/1023>. "The Kubrick FAQ Part 2." Visual-memory.co.uk. Web. 03 Apr. 2012. . IMDb Reviews. IMDb.com. Web. 17 Mar. 2012. . Flame into Being: The Life and Work of D. H. Lawrence (Heinemann, London 1985) Anthony Burgess, p 205 Bugge, Christian. "The Kubrick Site: The ACO Controversy in the UK." Visual-memory.co.uk. Web. 04 Apr. 2012. . Kipp, Jeremiah. "A Clockwork Orange." Slant Magazine. Slant Magazine. Web. 24 Mar. 2012. . "A Clockwork Orange (1971)." A Clockwork Orange. Web. 08 Apr. 2012. . http://movies.netflix.com/WiMovie/A_Clockwork_Orange/383466?trkid=2361637
Sunday, August 18, 2019
State of California versus Frankenstein :: Argumentative Persuasive Mary Shelley Essays
State of California versus Frankenstein Ladies and gentleman of the jury we are gathered here today to highlight the injustices, prove the innocence, and consequently save the life of a man that has been dealt the wrong hand since even before his existence. A man who with no power of his own, was put into situations that forced him to behave the way that he did. His actions were just mirror reflections of the behavior that he was taught, and seeing how he was perceived as being a monster rather than human, he soon began to fulfill the role of the monster he was seen as. Mr. Frankenstein had not the power nor was he given the ability to control his own actions. He has been made a victim of circumstance. In conclusion, I will try to prove that Frankenstein should not be held personally or morally responsible for his actions, because forces outside his control caused his criminality. < Doctor Victor Frankenstein once stated "A new species will bless me as its creator and source: many happy and excellent natures would owe their being to me" (Shelley 223). Yet, Dr. Victor did not think about the consequences of his actions, he did not think about the effect it would have on his creation. He was just empowered by the vision of creating a human being. "His sole purpose of infusing life into an inanimate body" (Shelley 233). Dr. Victor gathered the material he needed to create Frankenstein. Yet, he never thought of the negative aspects that his creation would inherit due to its degenerate body parts. First, let's talk about the neurophysiological aspect. Frankenstein was given an abnormal brain, the brain of a criminal. To the Doctor's defense he did not know that the stolen brain was one that belonged to a criminal;however, it is very possible that the new brain recipient inherited the anti-social behavior possessed by the former. A second point worth noting is Frankensteins' genetic makeup. The massive abnormalities in which Frankenstein has had to endure reflects his behavior. For example, his unproportionate body parts his hands longer than a normal human being. This mans' unusual height, eight feet tall is proportionally larger and stronger than any other man. A figure covered by many scars that bond each piece of raw material that was used to create Frankenstein. And that face, the face of an outcast, which whenever seen, frightens any creature around, whether it be human or animal.
Saturday, August 17, 2019
College Entrepreneurs Do Good and Make Money
â€Å"College Entrepreneurs Do Good and Make Money,†(Nickels, McHugh, & McHugh, 2010, p. 26). They are really business and success story. True college entrepreneurs will do anything possible to reach their goals by being original and innovative. They pick an idea based on the customer needs and use it to develop the plan. We have heard about several young millionaires entrepreneurs that started their business while they were still attending college, such as Mark Zuckerberg who launched Facebook while still attending Harvard. Now he is one of the youngest billionaires in the world. Ryan Allis and Aaron Houghton were also college students with the determination of success, and they have taken their dreams into a blossoming entrepreneur. We find their case as a really good lesson to learn about being a successful entrepreneur, these two young college students were able to take risk and find a need to fill in the community. Another thing that was imperative for their success was the preparation of their idea about the role of each other into the business. They were able to take something they both enjoyed; computers, and create a business using their mutual talents. Aaron had strong product development skills, and Ryan was bright in marketing skills; they complemented each other very well, this helped with the growing of the corporation. Once you have your business scheme you must make certain that you have a well-defined plan. It must offer a clear direction for the enterprise and describe the market you wish to target, also the potential risks and rewards, the people that will help you get there, and how you are going to get there. We think that having a dream is great but it will not move you to start anything; you need to have willpower to be able to execute the first step. Aaron and Ryan only had a couple of hundred dollars to start their business, but they were able to run their business and start with a small amount of capital. They basically started with the little resources they already had; the internet, technology, and a love to access to computers. We do not need to start gigantic to create a successful business. We also think that the fact that Ryan and Aaron were young and seem that they did not have a family to support, pay mortgages or children to rise. They were not depending on a profit from their initial investment, in contrast, with a person with a family and responsibilities to face. Determining the accurate level of planning to do can be not easy. But we agree, that waiting too long will not get you going, it is important to start and you will find new resources, meet new people, and get new opportunities to make your dream come true.
Friday, August 16, 2019
The Crisis Of Underperformance Education Essay
Education is considered as the most valuable tool for human edifice †( Barineka Nbina, 2010 ) . Education nationally is recognized as the greatest investing in the state that can convey civilisation, development and socio-economic advancement. The twenty-first century is characterized by promotion in scientific discipline and engineering ( Okebukola, 1996 ) . â€Å" In his survey Barineka Nbina ( 2010 ) point out that every state is endeavoring to accomplish scientific and technological discovery with their environment. Therefore, the instruction of scientific discipline and engineering is going more demand and activity oriented than earlier †. Existing research suggest that Information and Communication Technology ICT has been integrated into capable instruction ( Hennessy et al, Granger et Al, Jamieson-Proctor et Al ) . The hapless criterion of scientific discipline in secondary schools nationally remains as a major issue. Badr ( 2010 ) reference that 70 per cent of 10,000 secondary school pupils that were surveyed in Egypt said that uninspiring learning discourage so to prosecute farther instruction in scientific discipline watercourse. â€Å" Teachers need to comprehend ICT as chiefly a tool for learning and larning across the course of study although there are foundations accomplishments in ICT that pupils need to larn before they can take part to the full in an ICT-rich schoolroom. †( Tin, 2002 ) . ICT is an indispensable facet of everyone ‘s day-to-day life with about every sector recommending for the usage of ICT to carry through its undertakings. The bing research survey shows that the usage of ICT as a back uping tool in instruction is a precedence for about all states but advancement has been uneven. There is significant difference adulthood within and between schools within the state in footings of ICT. A really low per centum of schools have embedded ICT into the course of study, and show high degrees of successful and appropriate ICT usage to back up learning across the state. Reynolds e.tel ( 2003 ) in his findings revealed that several instructors reveal that ICT has surely raised criterio n and presentation of work, while many of the instructors from most schools still see ICT as uneffective and clip cachexia. Reynolds e.tal ( 2003 ) further reveals that these findings reveal that the attack of learning differs from school to school.3. Research Problem and Aims ( Required words 150 and Actual words 209 )Problem statementThe crisis of underperformance of our instruction and preparation system remains a major issue. The criterions of public presentation in our instruction system are really low. Although in 2010 the base on balls rate increased by 6.8 % to 67.5 % . , but there is still a concern with hapless public presentation in Science. Science larning requires skilled and specialist instructors who provide quality inputs in the schoolroom. Barineka Nbina ( 2010 ) found that every state is endeavoring to accomplish scientific and technological discovery with their environment. Therefore, the instruction of scientific discipline and engineering is going more demand an d activity oriented than earlier. Badr ( 2010 ) reference that 70 per cent of 10,000 secondary school pupils that were surveyed in Egypt said that uninspiring learning deter them to prosecute farther instruction in the scientific discipline. Possibly the hapless public presentation in Science is due to miss of instructor ‘s resources.PurposeThe purpose of this research is to look into the current resources used by instructors to learn, the effects that affects those resources and to better the academic competences and ICT acceptance in instruction of scientific discipline in secondary schools by planing an e-teaching intercession tool. This will give the consequences to enable those who would make good in the programme to be eligible for entry into a sheepskin programme in third instruction.4. Literature Review ( Required words 1000 and Actual words 1195 )Theoretical modelThis research will be grounded on Technological credence theoretical account ( TAM ) model and Task-techno logy tantrum ( TTF ) theoretical account. TAM construct specifies that â€Å" the causal relationships between system design characteristics, perceived usefulness the grade to which a individual believes that utilizing a peculiar system would heighten his or her occupation public presentation †( Davis, 1989 ) , perceived easiness of usage â€Å" the grade to which a individual believes that utilizing a peculiar system would be free from attempt †( Davis, 1989 ) , attitude toward utilizing, and existent use behavior ( Davis, 1989 ) . â€Å" TAM provides the overall enlightening representation of the mechanisms by which design picks influence user credence, and should hence be helpful in applied contexts for prediction and measuring user credence of information engineering †. TTF theory holds the theory that engineering will merely be used if its capablenesss are fiting to the demands of the undertaking to be performed and it ‘s more likely to hold a posi tive impact ( Goodhue and Thompson, 1995 ) . Technology that does non offer sufficient advantage it will non be used. The ground of uniting these two theoretical accounts is because it captures two different facets of user ‘s picks to use information and communicating engineering. Dishaw et Al ( 2002 ) indicate that â€Å" Both facets, attitude toward the IT ( TAM ) and rationally determined expected effects from utilizing the IT ( TTF ) , are likely to impact user ‘s picks to utilize IT. TAM will be used to look into on the factors that affect ICT tools acceptance by instructors for learning scientific discipline. TTF will be used to analyze the impact of ICT tools that are presently available to help instructors.Use of ICT in ClassroomsAl-Zaidiyeen et Al ( 2010 ) conducted a research in â€Å" Teachers ‘ Attitudes and Levels of Technology Use in Classrooms: †their findings revealed that the degree of ICT usage by rural secondary schools instructors is low, this implies that ICT are barely of all time used for educational intents by instructors in rural secondary schools. â€Å" Teachers are more likely to integrate ICT usage in their schoolroom if they see its relevancy to their direction and are convinced that the design of instruction package is compatible with educational ends and the single acquisition demands of pupils. †( Al-Zaidiyeen et Al, 2010 )Use of ICT as medium for learning scientific disciplineYucel et Al ( 2010 ) in a survey of â€Å" Models to research Turkish instructors ICT integrating phases and the factors that affect ICT integrating †indicate that a batch of ICT integrating to instruction has failed because instructors were unsure about how ICT could be integrated into the course of study. Yucel ( 2010 ) indicate that in order for instructors to be able to utilize ICT they should be equipped with the necessary accomplishments and cognition. Flick and bell argues that although ICT is a buzzing word in this century but still â€Å" few instructors really do non understand how engineering is used in scientific dis cipline, nor can they adequately describe the relationship between scientific discipline and engineering. †Flick and Bell ( 2000 ) indicate that â€Å" If the intent of engineering in scientific discipline instruction is to heighten scientific discipline instruction and larning instead ( than for the engineering ‘s sake entirely ) , a different attack is necessary †. Flick and Bell ( 2000 ) further provinces that instructors should look at engineering as a manner of assisting pupils explore subjects in more deepness and in more synergistic ways. Bell and Flick reached these consequences by garnering thoughts from cognition of research, K-12 learning experience, and learning experience in scientific discipline instructor instruction with engineering.Teachers ‘ Knowledge and Attitudes towards ICT usageYucel et Al ( 2010 ) consequences revealed that there is no relationship between instructor ‘s negative attitude and instructors ‘ cognition on ICT . Yecul et Al ( 2010 ) reached these consequences by transporting out correlativity analysis between dependant and independent variables. Yucel et Al ( 2010 ) further indicate that â€Å" attempt seeking to better instructors ‘ attitudes is non likely to hold a direct impact unless their feeling of ego adequateness is improved †. Yecul et Al ( 2010 ) consequences contradict with Al-Zaidiyeen et Al ( 2010 ) consequences. Researchers globally believe that the usage of ICT tools for educational intents depends upon the attitudes of instructors toward the engineering ( Summers, 1990 ; Al-Zaidiyeen et Al, 2010 ) . Al-Zaidiyeen et Al ( 2010 ) reached the consequences by appraising indiscriminately selected 650 instructors in Jordan, in the usage of ICT, and the degree of attitude of instructors towards the usage of ICT.ICT Adoption betterment intercessionsTrainingAdeyinka et Al ( 2007 ) in the survey of an appraisal of secondary school instructor ‘s utilizations of ICT : deduction for farther development of ICT ‘s usage in Nigerian secondary schools suggests that in order for instructors to be technological progress, they need to go to ICT workshops.5. Research Methodology ( Required words 200 and Actual words 612 )This research will consist of 3 stage ‘s, each stage will lend in better shaping this survey. This survey will use instance survey and a descriptive study method to let the research worker a graphic description of how secondary school instructors are doing usage of ICTs.Phase 1: To analyze the current instruction intercession tools that are utilized in secondary schools for instructors to better Teach scientific disciplineA instance survey will be used in which an interview with KwaZulu natal secondary schools scientific discipline instructors will be conducted to analyze current methods of ICT ‘s that are utilized as support tool for them to learn scientific discipline better. Lone instructors from class 10,11and 12 w ill be interviewed. The interview inquiries will consist of both open-ended inquiries and close-ended inquiries. Examples of inquiries to be asked such as: 1. Which ICTs tool do instructors hold entree on? 2. What is the adequacy degree of the assorted facets of ICT availability/ entree in your school? Datas collected from these interviews will be used to better derive insight on the current ICT tools of learning scientific discipline that are used in secondary schools. This information will assist for theoretical coverage on current toolsPhase 2: To look into the factors that are impacting the use of those toolsA descriptive study method will be used, whereby class 10, 11 and 12 scientific discipline instructors will be handed a questionnaire in KwaZulu natal secondary schools to analyze the factors that are impacting the use of instructors back uping tool to learn scientific discipline better. The research variables for this stage are: instructors demographics, instructors ‘ perceptual experience about the sensed easiness of utilizing ICT, Teachers perceived utility of ICT, instructor ‘s old ages of experience, teacher ‘s cognition all these are independent variables, the dependant variable will be, Perceived usage of ICT by instructors to better Teach scientifi c discipline All points in collected information from the questionnaire will be subjected to a factor analysis spontaneously. A varimax rotary motion will be used to pull out factors. Likert type grading will besides be applied across all points. Stepwise arrested development techniques will be employed to explicate discrepancy the factors that are impacting the use of ICT scientific discipline instruction tools. Descriptive and illative statistics will besides be employed.Phase 3: To plan and prove an e-teaching intercession tool for helping instructors to learn scientific discipline betterOn the completion of the first two stages, the factors will be known. An appropriate intercession e-teaching tool will be designed and experimented with the purpose of measuring the effectivity it has on the instruction of scientific discipline in secondary schools. The experiment will affect five instructors from class 10 to 12 who will be selected from rural and urban schools in KwaZulu natal state of South Africa.
Comparing Fast Food Giants Burger King and McDonald’s
Burger King Versus McDonald’s Fast Food Franchises have raised many questions or debates that have risen because of obesity issues and health concerns in our society to this day. This has led me to compare Burger King and McDonald’s. Comparison of these two companies to see exactly what they have to offer and the fact that people seem to look at all fast food the same. It is all bad for you and causing health issues. Burger King and McDonald’s are the top two fast food chains and are known for serving unhealthy foods, but there are healthy choices available, as salads. As I have done my research to see if there are healthy options when we eat at these places. Truly comes down to whether it is us or the franchises making the wrong choices or whose fault it really is. Fast food franchises being all of the same or having differences amongst food options and services offered. Similarities Main thing appears to be a burger, fries, and a soft drink is what they are known for. Both of the franchises basically offer the same types of foods, combo meals, children meals, dollar menus, super sizes available, play lands and a drive thru for that fast service. Usually you can bet the food will taste the same each time you go, giving us the feeling of reliability. Whether you want to sit down as a family or eat on the go. Both of the companies keep the cost down to make it an affordable meal and giving us a variety to choose from. They both serve breakfast, lunch, and supper options. This is partially what makes it hard for us to say no. The convenience and time saving options really hit home to our busy schedules. Differences: Now even though they both seem to be basically the same, there are differences within these two franchises. One way that they are different is in the way they prepare and process their foods. At Burger King, they use a process where there is no human intervention while cooking their burgers. No one has to stand there and flip the burgers. This is saving time and providing employees to be available to keep moving and making meals more quickly. They also use a broiler, giving us that broiler taste. Where McDonald’s uses a basic grill style and someone has to be there constantly to turn and flip the burgers. Burger King has bigger and thicker burgers, providing more for your buck. They also have the option of onion rings instead of fries, and they are lower in calories than fries. When concerning their fries, they even have the option of no salt on them. This is an amazing option for those of us watching our sodium intake. The one thing that I was surprised with is that they provide Kraft macaroni and cheese and apple fries in the children’s meals, along with milk. The fries are still included, but for those parents who do not want them to have the fries, there is your other option. McDonald’s gives you a wider range of choices in desserts and salads. They offer 10 different types of salads, where Burger King only offers you 3 types of salads. Their happy meal is including a choice of low fat chocolate and white milk, fries along with apple slices. If you do not want your child to have fries, there’s the option of two packages of apple slices. They are attempting to offer a healthier choice for your children. Healthier choices If you want just the basic burger, fries, and a beverage, it really does not matter where you go; they both offer these and come down to the consumer’s taste buds. Basically either place you go, they both have begun to offer many healthy food options. It still is not the best choice, but you can choose something that will not cause so much weight gain. It is coming down to our choices on what we eat if we must go to a fast food restaurant. Some of the choices you can make: Have a salad with the dressing on the side, Burger King’s fries with not salt, have the condiments on the side or none, choose a burger with no bacon or cheese, have their oatmeal option with fruit on top, a veggie burger instead of meat, grilled instead of fried and have juice instead of soda. There are many things that we can choose to eat that will make our visit to these two places healthier. Both places provide brochures on the nutritional value on their meals, take time to check them out and see what you are eating. Burger King and McDonald’s are very similar in many ways, but do have differences. Just depending on what your taste buds are, if you want it made your way, or if you want a bigger burger. These will assist in determining to which company fits best to your desires. The salad option, McDonald’s is the way to go. They have best options in this category, but remember to go for the grilled instead of fried and have that dressing on the side. Just remember it is our choice to what we are putting in our body. References Associated Press. â€Å"McDonald's profit climbs 27 percent. †MSNBC. October 19, 2007. Retrieved November 26th 2011. Written by Associated Press on November 15, 2011 4:35 pm. http://newsone. com/author/associatedpress3/ Brandau, Mark (28 March 2011). â€Å"BK’s Chidsey to resign in April†. Nation's Restaurant news. Burger King Corporation. 2007, www. k. com, Retrieved November 26th 2011. Cordal, Ina Paiva; Walker, Elaine (28 October 2010). â€Å"Burger King Ousts top staff†. Miami Herald. 2010 10-K SEC Filing, Burger King Corporation, 30 June 2010, pp. 38-40. Hogan, David (1997). Selling 'em by the Sack: White Castle and the Creation of American Food. New York: New York University Press. Jakle, John A. ; Sculle, Keith A. ; Pappas (1999). Fast Food: Roa dside Restaurants in the Automobile Age (1st ed. ). JHU Press. pp. 116–117. ISBN 080186920X. â€Å"Mathew Burns of Long Beach, California, and Kieth g. Kramer, Burn's stepson and owner of a Daytona Beach, Florida drive in, founded Insta-Burger King, Burger King's predecessor. †Kroc, Ray and Anderson, Robert (1977). Grinding It Out: The Making of McDonald's. Chicago: Contemporary Books. Levinstein, Harvey (2003). Paradox of Plenty: a Social History of Eating in Modern America. Berkeley: University of California P, 2003. 228-229. Luxenberg, Stan (1985). Roadside Empires: How the Chains Franchised America. New York: Viking, 1985. Mcginley, Lou Ellen with Stephanie Spurr (2004). Honk for Service: A Man, A Tray and the Glory Days of the Drive-In Restaurant†. Tray Days Publishing. Schlosser, Eric (2005). â€Å"Fast Food Nation: The Dark Side of the All American Meal†HarperCollins Publishers. www. chapters. indigo. ca/books/Fast-Food-Nation. Retrieved November 25th, 2011. Thottam, Jyoti (June 6, 2005). â€Å"Fast Food Face-Off. †Time Online Magazine. Read more at Suite101: Which Fast Food is Better: McDonalds o r Burger King? | Suite101. com http://tasha-kelley. suite101. com/which-fast-food-is-better–McDonald’s-or-burger-king
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