Societal Changes Assignment Example | Topics and Well Written Essays - 1000 words

Societal Changes - Assignment Example We just know we do not want any part of it. Introduction The issue of stereotyping, which also leads to a form of racism, can be seen in both the population and within the police force and the type of interactions that occur. When looking for someone to blame for why certain crimes happen, it is easy to think automatically that if someone thinks, looks and acts within a narrow visual framework, then it is easy to blame that person and that group of people (Bradshaw & Roseborough, 2005). The issue of Muslims has a tender spot in the minds of many Americans who see all Muslims as perpetrators of bombings and terrorism in the country. Whenever something happens in the country, people automatically assume it was done by a Middle Eastern Muslim terrorist. As we have also seen, the bomber can also be a Western Muslim terrorist, such as in the case of the Shoe Bomber in 2001 (Elliot, 2002). 1.With the recent bombing of the Boston Marathon, and the near-beheading and death of a British soldi er on a London street, tensions have been running high with the public, particularly in England. There have been numerous protests, and police, both in England and in the United States, have been told to look for groups of people, who might commit crimes against Muslims directly, or on or around property owned by Muslims. It is very hard for people to understand that when one, or a few, members of a group have committed a crime against others, it does not mean that all people of that group will be doing that same sort of crime (Gabbidon & Greene, 2013). When people look for the enemy, the only thing they have to go on is what the enemy would typically look like. In a war, one side knows that a certain uniform represents the enemy, and that there may be other physical identifications, such as an Asian appearance, for wars conducted in World War II and Vietnam. In a more modern day, and in modern warfare conducted today, appearances are far more deceiving and it is hard to know who th e enemy is. Some have dressed up in Western army uniforms and then turned guns on unsuspecting Western soldiers. Even seeing women with burkas and, especially with full face veils, promotes the concept of hiding something that makes identification possible (Moore, 2010). Therefore, those who hide behind veils, or ski masks, are potentially considered an enemy. It would be easy to suspect that some other person may be under that burka and veil besides a normal Muslim woman. While in Muslim countries, veils are rarely given a second thought, in Western countries, it is important for Muslim people to respect parts of the society they are now living in, and to let women remove the veil so it is not so threatening. Integration with their new society is essential to their success. Living as if they were still in their own land and observing their own rules without regard to the new country, is not acceptable (Moore, 2010). 2. There are several solutions to the issue of racial profiling. A ) In the first case, Muslims can take matters into their own hands by meeting law enforcement members of their community and getting to know the neighborhood police who conduct regular beats in the area (Bradshaw & Roseborough, 2005). Making friends, or at least, acquaintances, allows the police: to 1) know who they are individually; 2) establish

Hambalang Case Essay Example for Free

Hambalang Case Essay 1. Create a short summary of the case and explain (a) who the suspects / Convicts are and (b) what criminal charges are brought against them Hambalang is the case regarding the construction of Centre for Education, Training and the National Sport School (P3SON: Pusat Pendidikan, Pelatihan dan Sekolah Olahraga Nasional) which is a multi-year project the Ministry of Youth and Sports. P3SON planned to be built on a land area of ​​312 thousand hectares in the village of Hambalang, Bogor regency and projected budget consuming Rp2, 58 trillion. Which is violated Regulation of the Minister of Finance. 56/2010 and the Regulation of the Minister of Public Works No.. 45/2007. Two ministers have not signed, but the funds are liquid. If the view of the BPK audit dated October 30, 2012 (Rizal open the audit documents), he was associated with the melting process advances Hambalang Project. CPC stated, Due to multi-year contract approval process violated provisions, then the parent contract should not happen, [then the remaining unspent advance money] in the amount of Rp116, 9 billion, an indication of state losses. In its Hambalang audit, the BPK also found that Rp 7.3 billion in funds from Adhi Karya went to several legislators in 2010 and 2011, when discussion of the sports centers construction Began. On Thursday (Sep 5 2012), the Supreme Audit Board (BPK) audit report of Hambalang Submitted case to the Commission. The audit mentions that the total state losses in the case reached Rp463.66 billion. In the Partner Selection Process least 19 people suspected to be involved. Namely: Andi Mallarangeng (ex Affairs), Wafid Muharam (Sesmenpora), Wisler Manalu (Kemenpora Procurement Committee). Jilani (Kemenpora Procurement Committee member), Bambang Siswanto (Secretary of the Procurement Committee Kemenpora) Rio Wilarso (Planning Bureau staff Kemenpora), M Arifin (Commissioner of metaphor Global Solutions / MSG). Asep Wibowo (Marketing Manager of PT MSG), Husni Al-Huda (PT staff Yodya work). Safe Santoso (Director of PT Cipta Mandiri Ciriajasa / CCM), Mulyatno (Marketing Manager PT CCM) Aditya Gautama (staff PT CCM), Rudi Hamarul (staff PT CCM), RM Suhartono (staff PT CCM). Joseph Sholikin (staff PT CCM), Malemteta Ginting (Staff PT CCM Construction Management Team Leader at the same time). Suhanta firm (staff PT Adhi Karya), Arif Taufiqurrahman and Kushadi (staff PT Adhi Karya) Advances in  Liquid Processing, there are three who was allegedly involved. Ie R Isnanta (Head of Finance Kemenpora). Good Teuku Muh Nur (Head of DK-1 PT Adhi Karya well Authorization Adhi-Wika KSO), Machfud Suroso (President Director of PT Dutasari Citralaras). However, the Commission has set Andi Malarangeng (AM) and the husband of his men as suspects. PM accused of abusing authority. Diversion AM by KPK in planning and disbursement of funds. 2. Does the case involve; gratification? If yes, towards who and provide explanation to justify your answers Yes, According to CPC finding there are gratifications Rp 7.3 billion in funds from Adhi Karya went to several legislators in 2010 and 2011 3. Does the case involve; abuse of power / authority? If yes, explain Whose power is abused, how and in what capacity? Yes, several legislators bribed, minister of youth and sports negligent in planning and disbursement of funds and the Board of Directors of the company Adhi Karya which channeled funds projects to legislators. 4. In what way has the case cause losses to the state budget? Abuse of power and bribery to various parties. In its Hambalang audit, the BPK also found that Rp 7.3 billion in funds from Adhi Karya went to several legislators in 2010 and 2011, when discussion of the sports centers construction Began. On Thursday (Sep 5 2012), the Supreme Audit Board (BPK) audit report of Hambalang Submitted case to the Commission. The audit mentions that the total state losses in the case reached Rp463.66 billion. This loss will cause losses to the state budget. 5. Beyond the legal charges, do you see any conflict of interest between the parties INVOLVED? Yes, in this case there is a conflict of interest. At the level of project implementers Hambalang, the brain was Muhammad Arifin. He consultant since the early implementers. He who makes the unit price of finished goods is so high. At one end is Dutasari Citra PT Laras (DCL), the companys largest subcontractor Hambalang Project led Mahfud Suroso wife and Anas Urbaningrum. Mahfud is also a good friend of Anas. PT Dutasaris got mechanical electrical projects, worth a total of Rp295 billion. According to  the audit, here occurs allegations of massive corruption. The second largest sub-contractor company is owned by PT Global Daya Manunggal Prananto Mr. Herman, who got a job with the foundation of the contract value Rp127 billion. So, PT and PT Global Dutasari a subcontractor for 87 percent of the total value of projects subcontracted by Rp482, 5 billion. Adhi Karya still amounted to Rp50 billion in arrears to him. In fact, for all Mahfud been paid in full. Suspected of involvement in Anas Urbaningrum as chairman of the Democratic Party when he received funds for his interest to be elected as chairman of the Democratic Party in Congress at that time.

History Germany Essay Essay Example for Free

History Germany Essay Essay How far do you agree that the new Weimar Republic was seriously threatened by political extremists in the years 1919-24? (30 marks) Between the years 1919 and 1924 the Weimar Republic experienced many threats against its new democratic regime, however it could be argued that none of the threats ever truly had the ability or support required to overthrow the new state, therefore rendering the attempts by the political extremists as not that threatening. The Weimar Republic saw the end of the Kaiser’s rule and the start of a new semi presidential and representative democratic ruling. Even dating back to the formation of Germany in 1870, the foundation of German Politics and power has always lain with the elites and middle class of the population. With the new Weimar Republic these elites were supposed to lose their power and control due to the democratic regime, however this did not actually happen. Therefore any political extremists that threatened the system, and in turn threatened the elite’s power, were dealt with in harsh manners. During the trials from the 1920 Putch over seven hundred people went to trial however only one person was convicted and given five years in prison. Since the Putch would have been an act of treason, and under German law, the punishment should have been death, however the fact there was so little convictions and such lenient punishments suggests just how strong the elite’s power still was and how strong the Weimar Republic would have been with the elite’s power backing it, but they would only do this as long as things were benefiting them. The Kapp- Là ¼ttwitz Putch of 1920 did lead to an exposure of the army’s reluctance to support the Weimar Republic due to the fact the army was ordered to act by Noske, the Defence Minister, however the leaders of the military refused to get involved and instead remained neutral. This therefore would have planted a seed of doubt into people’s minds as to how good the Republic would be as not even the army were going to protect it, which then would lead some people to feel unprotected and vulnerable, and  could have led to people turning against the democratic system and instead turning back to the old ways of running the country. Yet, this was not the case therefore suggesting that the Kapp- Là ¼ttwitz Putch did not pose as being that significant of a threat. The Munich Beer Hall Putch could be argued as being doomed from the start and therefore never truly being a serious threat. From the beginning and throughout it never had the support of the German people, with only a small number of people supporting their cause. Seeckt also used his powers to command the army to resist the Putch and with the combination of the Bavarian Police and the army the Putch was crushed easily with minimal deaths. However, in the end Hitler was arrested on charges of treason (again meaning the punishment under German law should have been death) and he only received a five year prison sentence yet he was released after just nine months. This again showed that the political power was with the elites and that the Weimar Republic was not as strong as first thought, yet the public were still willing to keep the democratic state in place and give it a chance to work. Therefore it could be argued that as long as people had a belief in the Weimar Republic and were willing to support it then any attempts by political extremists would never have been that successful and therefore they were never truly much of a threat. In conclusion, although the Weimar Republic did indeed experience many threats from political extremists, with some seemingly serious threats against it which showed the many flaws in the system such as the power of the elites and the army’s standing in the new regime, yet none of the attempts had enough public support backing them to have a serious impact. They just didn’t have enough public support as people, especially of the working classes, believed in their new democratic system, and wanted to give it enough time to start to evoke changes that would benefit them in the long run. Therefore the attempts could not have had enough of an impact to name them as being serious threats against their new democratic state.

Image Pre-compensation for Ocular Aberrations

Image Pre-compensation for Ocular Aberrations Introduction Motivation On-screen image pre-compensation has good prospect with the increasing usage of various display screen devices in our daily life. Comparing to glasses, contact glasses and ocular surgery, on-screen image pre-compensation can be easily carried out by computer calculation without any irreversible change in the eyes, as long as the ocular aberration is known. Further, since neither contact lenses nor glasses are advised to be worn all of the time, on screen pre-compensation could even supplement glasses and contact lens use. It is known that compensation for higher aberrations can lead to super-sight, which is the neural limit of human eye. On-screen compensation also has the prospect of achieving this with customized screens in the foreseeable future. Image Processing Theories Human Visual System The human visual system is the combination of the optical system of the eye, and the neural processing of the light information received [Roorda (2011)], in which the latter is out of the concern of this research. The optical system of the eye is an intricate construction including the pupil, cornea, retina and lens (see Fig.1). The light come through the pupil is refracted by the lens and make an inverse image on the retina. During this process, any deficit would cause aberrations. For instance, myopia may result from the lens that the refraction is too high or that the distance from the lens and retina is too long. Fig.1 Cross-section of eye structure There is a limit resolution dominated by the neural receptor on the retina, which is below the diffraction limit. Although even for normal emmetropic eyes the sight is below neural limit and diffraction limit due to the minor deficit of eye structure. [Austin (2011)] For eyes with refractive issues, caused by cornea or lens from an ideal spherical shape, the aberrations would significantly dominate over this limit. Thus, in the following research, we shall omit the neural limitation. To increase the efficiency in the following, we can simply model the eye structure as such: a lens (regarding the cornea and the lens as a whole) with an adjustable size (pupil size) and an image plane (retina). Point Spread Function and image quality As is stated in the previous section the aberrations would come from any deficit of eye structure. In order to quantify the distortion in mathematical means, we introduce the Point Spread Function (PSF). Fundamentally, the PSF is defined as a function describes the response of an imaging system to a point source or point object. Note that the loss of light would not be considered in the PSF. Then, if we consider the PSF does not change across the field of view, which applies to the central 1-2 ° of visual angle [Reference!!!], the image can be expressed by the convolution of the PSF and the object in this area. (1) Where denotes the convolution algorithm. Note that the deconvolution method is based on the inverse operation of Eq.1, which will be introduce in Section 1.2.4. Fig.2 A contrast of PSF and MTF of an ideal emmetropic eyes (up) and a typical myopic eyes of -1.00 dioptre (down) Now we introduce two functions that can show the quality of the image: Optical Transfer Function (OTF) and the Modulation Transfer Function (MTF). Either OTF or MTF specifies the response to a periodic sine-wave pattern passing through the lens system, as a function of its spatial frequency or period, and its orientation [WIKI]. The OTF is the Fourier transform of the PSF, and the MTF is the real magnitude of the OTF. In a 2d system, these two functions are defined as: (2) Where denotes the Fourier transform, and denote the phase space and Euclidian space, respectively. (3) Where means taking the absolute value. Zernike Polynomials The Zernike polynomials are a sequence of polynomials that are orthogonal over circular pupils. Some of the polynomials are related to classical aberrations. In optometry and ophthalmology, Zernike polynomials are the standard way to describe aberrations of the cornea or lens from an ideal spherical shape, which result in refraction errors [WIKI]. The definition of orthogonal Zernike Polynomials recommended in an ANSI standard is represented as: (4) Where m and n denote the radial degree and the azimuthal frequency, respectively. The radial polynomials are defined as: And the triangular functions: (6) Note that nm and nm must be even. The relationship between double index (m, n) and single index (i): Table.1 Eye aberrations presented by Zernike Polynomials Aberrations are expressed as the distortion of the wavefront as it passes through the eye. As is stated, Zernike polynomials are the standard way [Campbell (2003)] of quantifying this distortion. The aperture function (or pupil function) can link Zernike polynomials with the PSF: Where denotes complex aperture function (or pupil function). denotes the phase of the wavefront, and the i is the imaginary unit and denotes the amplitude function, which is usually one inside the circular pupil and zero on the outside. The PSF can be expressed as the square of Fourier transform of the complex aperture function: We now know that the PSF can be calculated with a known wavefront and the distortion of the wavefront caused by refractive error can be actually represented by several orders of Zernike Polynomials with different amplitudes, which can be precisely measured with a Shack-Hartmann wavefront analyser device. Deconvolution Method We introduce a way to pre-process the image to neutralize the aberration caused by eyes, which is also called image pre-compensation. Simplistically, to compensate them in advance to proactively counteract degradations resulting from the ocular aberrations of different users. Point Spread Function (PSF) is defined as a function describes the response of an imaging system to a point source or point object. The sinusoidal function is an eigenstate of the PSF (i.e. if the input image is a sinusoidal function, no matter what the PSF is, the output image would also be a sinusoidal function) The Image on the retina (or) can be linked with PSF by convolution as shown in Eq.1. Then we do Fourier transform on both side of the equation Note the convolution has changed to multiplication in the phase space. If we define a new OBJ as: The new image is This means If we can process the OBJ as defined, we will have the intended image in the observers eyes. To form the OBJ we introduce Minimum Mean Square Error filtering (or Wiener Filter) Where K is a constant. Computing Theories Fast Fourier Transform As is shown in previous sections, we use two algorithms that require an amount of calculation, which is Fourier transform (inverse Fourier transform) and convolution. Since computer images can be seen as 2-demension lattices, we will use 2d Discrete Fourier Transform: It is known that this process requires a significant amount of calculation. The conventional way of doing this would take a long time for regular PC. However, for research need, we will need to do this calculation in real-time. Thus, we introduce the Fast Fourier Transform (FFT). A definition of FFT could be: An FFT is an algorithm computes the discrete Fourier transform (DFT) of a sequence or its inverse. Fourier analysis converts a signal from its original domain (often time or space) to representation in the frequency domain and vice versa. An FFT rapidly computes such transformations by factorizing the DFT matrix into a product of sparse (mostly zero) factors. [Van Loan (1992)] Also, all convolution within our program will be calculated by means of the FFT through the following equation: (16) Fig.3 A contrast of the speed of two means of calculation with respect of data length. The purpose of doing so is to accelerate the speed of calculation, since the conventional way of calculating convolution is much slower than the FFT. This difference of speed is shown in Fig.3. Nyquist Limit As is stated, we need the image and the PSF to before doing the pre-compensation. The PSF is calculated by aperture function Eq.9. To simulate the pupil, we can use a circular apertureà ¢Ã¢â€š ¬Ã‚ ¦. However, this circular pupil has some restrictions in computer simulation, which is the Nyquist limit. In signal processing if we If we want to reconstruct all Fourier components of a periodic waveform, there is a restriction that the sampling rate needs to be at least twice the highest waveform frequency. The Nyquist limit, also known as Nyquist frequency, is the highest frequency that can be coded at a given sampling rate in order to be able to fully reconstruct the signal, which is half of the sampling rate of a discrete signal processing system. [Cramà ©r Grenander (1959)] For our simulation the sampling rate n is represented as: Aliasing will occur when . Psychometric Theories In order to quantify the enhancement of the Deconvolution Method to the subjects, we need to measure the change of the thresholds of the eyes before and after the compensation. Specifically, in our research we need to find out the threshold of minimum contrast and size of an image that the subjects can correctly recognize. This requires the use of some psychometric theories. Adaptive Staircase Method The staircase method is a widely used method in psychophysics test. The point of staircase method is to adjust the intensity of stimuli according to the response of the participant. To illustrate this method we shall use an example introduced by Cronsweet (1962): Suppose the problem is to determine Ss absolute, intensive threshold for the sound of a click. The first stimulus that E delivers is a click of some arbitrary intensity. S responds either that he did or did not hear it. If S says yes (he did hear it), the next stimulus is made less intense, and if S says no, the second stimulus is made more intense. If S responds yes to the second stimulus, the third is made less intense, and if he says no, it is made more intense. This procedure is simply continued until some predetermined criterion or number of trials is reached. The results of a series of 30 trials are shown in Fig.4. The results may be recorded directly on graph-paper; doing so helps E keep the procedure straight. Fig. 4 An example trail by Cornsweet (1962) There are four important characteristic of adaptive staircase method (1) Starting value; (2) Step-size; (3) Stopping condition; and (4) Modification of step-sizes. [Cornsweet 1962] The starting value should be near the threshold value. As is shown in Fig.4, the starting point determines how many step until it reach a level that near the threshold. The test will be most efficient if the starting value is near to that threshold. The step-size is 1 db for the example test. Step-size should meet the requirement that it is neither too big that not able to measure the threshold accurately nor too small to slow down the test process. It is advised that the step-size would be the most effective when it is the size of the differential threshold. The result with the staircase method would be like Fig.4 in general when it hover around a certain level of intensity of stimuli. When reached this asymptotic level, the trails should be taken into account. An efficient way is to set a number of trails that need to be record and start to count after it reach the asymptotic level. Under some conditions, the step-size need to be changed during the test. For careful experimental design, the first stimulus in each of the staircases are at same intensity-level. [Cornsweet 1962] However, then the staring level would be too far from the final level. This can be avoided by using large steps at the start, and smaller steps when it approach the final level. For instance, this can be done by decrease the step from 3db to 1db at the third reversal. It should be stated that the adaptive staircase method is a very efficient way of measurement. For a given reliability of a computed threshold-value, the staircase-method requires the presentation of many fewer stimuli than any other psychophysical method. Related Work General image compensation has long been used since the invention of lens. The invention of the computer and portable display devices make it easier to perform on-screen image pre-compensation. On-screen compensation has the advantage of convenience in that it can easily be carried out with any display-screen device that can compute. In addition, acuity limits in the human vision on the fovea are found to be between 0.6 and 0.25 arc minutes [Schwiegerling 2000], which is better than the typical acuity of emmetropic eyes [Pamplona 2012]. This means that effective compensation may increase the performance of emmetropic eyes. Deconvolution Method On screen image pre-compensation is based on the idea that the aberrations can be neutralized by pre-compensating the object. Specifically, it requires dividing the Fourier transform of uncorrected image by the Fourier transform of the PSF (i.e. the OTF). A detailed derivation can be found at section1.2.4. Early research by Alonso and Barreto (2003) tested subjects with defocus aberration using this method. Their results showed an improvement in observers visual acuity compared to non-corrected images. However, in practical use, for example, defocus, the defocus magnitude (in dioptres) as well as the pupil size, wavelength and viewing distance (visual angle) is required to calculate and scale the PSF, which means measurement and substitution of these parameters are also required to deliver the intended compensation. Enhancement of Deconvolution Method Recent research has further improved the deconvolution method. Huang et al (2012) carried out work with dynamic image compensation. They fixed the viewing distance from the screen and measured the real-time pupil size with the help of a Tobii T60 eye tracker device. Then they compensated the image with this real-time pupil size data. The reliability and acuity were improved by this dynamic compensation. Unlike perfect eyes, for which bigger pupil size would lead to smaller diffraction limited PSF, for most eyes, a bigger pupil size would lead to an increase in aberrations. That is also why dynamic compensation is important. As is mentioned in previous section, the principle of pre-compensation is to divide the Fourier transform of the image by the Fourier transform of the OTF. In order to avoid near-zero values in the OTF, most of the research used Minimum Mean Square Error filtering (Wiener filter). However, the outcome usually suffers from an apparent loss of contrast. Recent research has revealed other ways to optimize the compensation to have higher contrast and sharper boundaries. The multi-domain approach was introduced by Alonso Jr et al. (2006). They claimed that there are unnecessary parts in pre-compensated image. Simplistically, there is compensation that is irrelevant with respect to the important information in the image. This work showed an improvement of acuity using this method with respect to recognising text. More recently, Montalto et al. (2015) applied the total variation method to process the pre-compensated image. The result is slightly better but still suffers from a trade-off between contrast and acuity. Fundamentally, the impaired human eye can be seen as a low-pass filter, and either an increase of image aliasing or a decrease of contrast is inevitable. Other Approaches The research described above can be seen as an enhancement and a supplement of the original method carried out by Alonso (2003). However, as is stated, there is a limit of image pre-compensation by the PSF deconvolution method. Others has studied other on-screen methods to achieve a better outcome. Huang et al. (2012) introduced a multilayer approach based on the drawback of normal on screen pre-compensation that was shown by Yellot and Yellot (2007). This method is based on the deconvolution method, but uses a double-layer display rather than normal display. According to Fig.2, if we have two separated displays, then we have two different MTF curve. Then, the near-zero gap in MTF can be filled. This approach has showed a demonstrable improvement of contrast and brightness in their simulation. However, it required a transparent front display that does not block the light from the rear display at all, which is not plausible in practical use. Later, Pamplona et al. (2012) investigated a light field theory approach and built a monochrome dual-stack-LCD display (also known as parallax barriers) prototype and a lenticular-based display prototype to form directional light. Huang et al. (2014) restated the potential of using light field theory on image compensation and built another prototype with a parallax barrier mask and higher resolution. The outcome of both methods were similar. They could produce colour images with only a little decrease in contrast and acuity. However, it should be stated that both methods were carried out with a fixed directional light field, which used a fixed camera to photograph the intended corrected image. It is obvious that is not feasible in practical use with moving observer. Adjustable directional light has not been implemented due to the limits imposed by diffraction and resolution. In addition, there are minor issues on the loss of brightness as well in these research. Overall, the most applicable way of on-screen image compensation is still deconvolution method. The light field method requires very precise eye tracking to inject the light into pupil, while deconvolution only requires the observer to keep a certain distance and to be in front of the pre-compensated image. Method Subjects Implementation We built a program for the test that can proceed the pre-compensation in real-time using deconvolution method. This program can pre-compensate any aberration that can be represented by Zernike polynomials The experiment is based on adaptive staircase method. During the experiment, the program shows optotype Landolt-C in four directions (i.e. up, down, left and right) which is randomly generated at each trail. The subjects choose the direction of the Landolt-C. Staircase: This research intend to find two thresholds: contrast and size. Though the We shall describe the staircase method for the contrast threshold. The experiment for size threshold is taken likewise. The four characteristic for our adaptive staircase method are: The start value is relatively large since the subject The step-size The experiment ends in N trials after it reached the final level For our research, we cannot determine an ideal starting value because the subjects have different type and intensity of aberration. Thus, we have to change the size-step to make our experiment efficient. The threshold is calculated using the record the last N trails of the experiment, which is determined by the following equation: Eq.() The program was design as such that Assumptions, Approximations and Limitations Assumption: About Subjects Limitation: Polychromatic issues, No. of Pixels, Staircase References Alonso, M., Barreto, A. B. (2003, September). Pre-compensation for high-order aberrations of the human eye using on-screen image deconvolution. In Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE (Vol. 1, pp. 556-559). IEEE. Alonso Jr, M., Barreto, A., Jacko, J. A., Adjouadi, M. (2006, October). A multi-domain approach for enhancing text display for users with visual aberrations. In Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility (pp. 34-39). ACM. Campbell, C. E. (2003). A new method for describing the aberrations of the eye using Zernike polynomials. Optometry Vision Science, 80(1), 79-83. Cornsweet, T. N. (1962). The staircase-method in psychophysics. The American journal of psychology, 75(3), 485-491. Harvey, L. O. (1986). Efficient estimation of sensory thresholds. Behavior Research Methods, Instruments, Computers, 18(6), 623-632. Huang, F. C., Wetzstein, G., Barsky, B. A., Raskar, R. (2014). Eyeglasses-free display: towards correcting visual aberrations with computational light field displays. ACM Transactions on Graphics (TOG), 33(4), 59. Huang, J., Barreto, A., Adjouadi, M. (2012, August). Dynamic image pre-compensation for computer access by individuals with ocular aberrations. In 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (pp. 3320-3323). IEEE. Montalto, C., Garcia-Dorado, I., Aliaga, D., Oliveira, M. M., Meng, F. (2015). A total variation approach for customizing imagery to improve visual acuity. ACM Transactions on Graphics (TOG), 34(3), 28. Pamplona, V. F., Oliveira, M. M., Aliaga, D. G., Raskar, R. (2012). Tailored displays to compensate for visual aberrations. Roorda, A. (2011). Adaptive optics for studying visual function: a comprehensive review. Journal of vision, 11(5), 6-6. Schwiegerling, J. (2000). Theoretical limits to visual performance. Survey of ophthalmology, 45(2), 139-146. Yellott, J. I., Yellott, J. W. (2007, February). Correcting spurious resolution in defocused images. In Electronic Imaging 2007 (pp. 64920O-64920O). International Society for Optics and Photonics. Young, L. K., Love, G. D., Smithson, H. E. (2013). Different aberrations raise contrast thresholds for single-letter identification in line with their effect on cross-correlation-based confusability. Journal of vision, 13(7), 12-12. Van Loan, C. (1992). Computational frameworks for the fast Fourier transform (Vol. 10). Siam. Cramà ©r, H., Grenander, U. (1959). Probability and statistics: the Harald Cramà ©r volume. Almqvist Wiksell.   Ã‚  

Free My Antonia Essays: The Growth of Jim Burden :: My Antonia Essays

The Growth of Jim Burden in My Antonia "The movement from possession to loss, from union to separation, is the deep and central pattern of Jim Burden's experience in My Antonia." (Fisher-Wirth) I believe that this quote given by the critic Fisher-Wirth somewhat explains the life of Jim Burden and that although he went through both gains and losses throughout his life; he learned the meaning and purpose of his life with Antonia. In the beginning of the novel, Jim had a family but was soon abandoned by them do to both of their deaths. He was then on his way to his grandparents house in Nebraska to begin a new and different life. At this point, he began a union with both his grandparents as well as Antonia. Antonia and Jim became very close friends and went through many childhood experiences together. Their friendship was soon torn apart when Ambrosch and Jake engaged in a quarrel which separated the two families for quite some time. But once again, the families resolve their differences and become close again. (Chapter 1) When Chapter 2 begins, Jim and his family are separated from Antonia's because of their new move to town. After this separation, Jim and Antonia were brought together again when Antonia came to work in town. This pattern repeats once again as the result of Jim going off to college. He loses touch with Antonia but then, through Lena, becomes connected to Antonia again. As a result of this, Jim goes back home to visit for a short time and then leaves for New York. Finally, twenty years later, Jim travels back to see Antonia and her new, "enlarged" family. He was glad to see that Antonia was finally happy again and enjoyed meeting all her children as well as her husband. With Jim's trip back to Black Hawk, he was able to tie his whole life together. After leaving Antonia's home, Jim felt that his life had made a circle. He realized that through all his gains and losses, the past that he shared with Antonia was so precious. Free My Antonia Essays: The Growth of Jim Burden :: My Antonia Essays The Growth of Jim Burden in My Antonia "The movement from possession to loss, from union to separation, is the deep and central pattern of Jim Burden's experience in My Antonia." (Fisher-Wirth) I believe that this quote given by the critic Fisher-Wirth somewhat explains the life of Jim Burden and that although he went through both gains and losses throughout his life; he learned the meaning and purpose of his life with Antonia. In the beginning of the novel, Jim had a family but was soon abandoned by them do to both of their deaths. He was then on his way to his grandparents house in Nebraska to begin a new and different life. At this point, he began a union with both his grandparents as well as Antonia. Antonia and Jim became very close friends and went through many childhood experiences together. Their friendship was soon torn apart when Ambrosch and Jake engaged in a quarrel which separated the two families for quite some time. But once again, the families resolve their differences and become close again. (Chapter 1) When Chapter 2 begins, Jim and his family are separated from Antonia's because of their new move to town. After this separation, Jim and Antonia were brought together again when Antonia came to work in town. This pattern repeats once again as the result of Jim going off to college. He loses touch with Antonia but then, through Lena, becomes connected to Antonia again. As a result of this, Jim goes back home to visit for a short time and then leaves for New York. Finally, twenty years later, Jim travels back to see Antonia and her new, "enlarged" family. He was glad to see that Antonia was finally happy again and enjoyed meeting all her children as well as her husband. With Jim's trip back to Black Hawk, he was able to tie his whole life together. After leaving Antonia's home, Jim felt that his life had made a circle. He realized that through all his gains and losses, the past that he shared with Antonia was so precious.

Biography of the Literary Works of Dylan Thomas Essay -- Dylan Thomas

"Drunk with melody, and what the words were, he cared not." This was a very common view among early commentators about Dylan Thomas (Cox 1). Thomas was a poet who was either loved or hated. It depended on the individual, and how they viewed his poetry. He was very famous for his poetry because it contained visions of life, aspects of birth and death, fear, grief, joy, and beauty. At a younger age, Thomas was a very violent poet. As he grew older, he spoke for all men greatly when he wrote. He wrote his poems referring to the qualities and sensations of life. The strength of feelings, which were expressed in his writings, gave many different impressions about Thomas’ attitudes toward religion and spirituality, relationships, and the passion in his poetry. Thomas published his first book, Eighteen poems, in 1934. He then moved to London, and wrote his second book, Twenty-Five Poems, in 1936 (Locher 471). The two books were written similar to each other. In one of his poems, "Twenty One", he complains that there is a time when sun or moon is not visible. The mystic elements were "light," and perceiving that night also sheds light. This is an example of his spiritual discipline. In a later poem, "Thirty Two," Thomas writes with mature mysticism. He then included in his poem contraries like life and death or pleasure and pain, so that they are tangible in nature. He did this when he explained that he was suffering with Jesus, and that all things are sensible. He then included in his poem contraries like life and death or pleasure and pain, so that they are tangible in nature. In a number of his later poems Thomas started them with "For the love of man and in the praise of God" (Korg 33-34). This shows how Thomas perceived h... ...y read his works. His works re-illustrate how he wrote through the eyes of an adult, and the innocence of a child. Critics state that the when Dylan Thomas died at the age of 39, the poems he had written, were the best of his time. Bibliography: Cox, C.B. ed. Dylan Thomas: collection of critical essays. New Jersey: Prentice-Hall, Inc., 1996, Pg. 1-75. Ferris, Paul. Dylan Thomas: A Biography. New York: The Dial Press, 1977, Pg.166-233 Knepper, B.G. "Dylan Thomas". Critical Survey of Poetry. Ed. Frank N. Magill. Englewood Cliffs; Salem Press, 1982, Pg. 2878-2888. Korg, Jacob. Dylan Thomas. Boston: Twayne Publishers, 1965, Pg. 33-55. Locher, Frances C. Ed. "Dylan Thomas" Contemporary Authors. Vol 104. Gale Research Company, 1982, Pg. 471. Magill, Frank N. "Dylan Thomas" Collected Poems. Ed. J.M. Dent; New Directions,1982, Pg. 53-55.

Carnivore :: Research Papers

Carnivore No one can speak for all Americans in deciding the trade-offs between equal protection of the laws, privacy, and fearless exercise of democratic freedoms. - Rob Geis Envision a future where every action you make is recorded and reviewed by unknown means — A world where a government spies on its own citizens more frequently than other nations — A government that reads everyone’s email, in order to try to thwart unpreventable actions. Does this sound like a science fiction story? Well it is not; this is a reality according to civil libertarians. Ever since the U.S. Federal Bureau of Investigation's (FBI) program, named Carnivore, was introduced to the world in 1999, civil libertarians have been up in arms claiming that Carnivore violates civil human rights. This claim and others about Carnivore are shortsighted, because there are misconceptions about Carnivore itself. Carnivore is not a vicious wolf, eating its prey (email) at will; it is a harmless puppy, which can barely open its eyes; I will go into some detail on what Carnivore is, why it causes commotion, and why it is inadequate to do any good. It is the role of any gover nment to protect its interests and its citizens. Carnivore does not live up to its expectations, but if used effectively can capture some criminals. History of biting Carnivore is a third generation on-line protection program. In â€Å"How Carnivore Works† by Jeff Tyson, he states, "While information about the first version has never been disclosed, many believe that it was actually a readily available commercial program called Etherpeek" (Tyson, 2). The second generation, Omnivore, was deployed in 1997. Information about Omnivore has not been public until recently. The third generation, DragonWare Suite, was introduced in 1999 which contains three parts, â€Å"[1] Carnivore - A Windows NT/2000-based system that captures the information. [2] Packeteer - No official information released, but presumably an application for reassembling packet into cohesive messages or Web pages. [3] Coolminer - No official information released, but presumably an application for extrapolating and analyzing data found in the messages† (Tyson, 2). In short, Carnivore is a program within the DragonWare suite that captures email packets from Internet Service Providers (ISP's) in order to prevent criminal actions that are conducted through email. According to Tyson, â€Å"The FBI plans to use Carnivore for specific reasons. Particularly, the agency will request a court order to use Carnivore when a person is suspected of: Terrorism, child pornography/exploitation, espionage, information warfare, or fraud† (Tyson, 5).