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The Global ETD Search service is a free service for researchers
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Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 21 to 25 of 25 (0.026 seconds)Spelling suggestions: "subject:"quinn"" "subject:"suinn""
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Power quality analysis using relay recorded dataBirdi, Harjit Singh 01 September 2006 (has links)
Demand for electrical power is increasing everyday. Along with the increase in power demand, the characteristics of the loads are also changing. From being high power consuming, simple, robust loads, today loads are more efficient, but at the same time more sensitive. The performance and life of these highly sensitive loads depend a lot on the quality of power supplied to them. <p>Power quality is any deviation of the voltage or current waveform from its normal sinusoidal waveshape. These disturbances include, but are not limited to, sag, undervoltage, interruption, swell, overvoltage, transients, harmonics, voltage flicker and any other distortions to the sinusoidal waveform. Occurrence of one or more of such disturbances is called a power quality event. Automatic classification of these disturbances is important for quick determination of the causes and to characterize possible impacts of the disturbances.<p>Modern microprocessor based protective relays have numerous integrated functions that allow them to provide information on power quality events. It is proposed to utilize the existing numerical relays to analyze the quality of power at any point in the power system. The numerical relays can be programmed to capture the oscillographic waveform or any disturbance on the analogue signal or change of state of the digital signals and store it in the form of Common Format For Transient Data Exchange (COMTRADE) format. These records are then transferred to a central monitoring workstation for off-line analysis. <p>This thesis describes a technique to automate the classification and analysis of the power quality events using relay recorded data. The technique uses voltage duration and magnitude (as specified in the IEEE Std. 1159 - 1995, IEEE Recommended Practice for Monitoring Electric Power Quality) of three phases to detect and classify the events. The classified results are then presented in a user-friendly graphical form. Fast Fourier Transform (FFT) is used to estimate the fundamental frequency and harmonic components in power systems. The graphical user interface of the power quality analysis tool is developed using Microsoft Visual C++ IDE and the algorithms are programmed in C++. <p>The proposed technique was tested using data obtained by simulating different power system disturbances as well as on the data recorded by relays. The algorithms were able to classify the power quality events accurately. In the future, this facility will: enhance the real time monitoring of power quality and provide statistical analysis of available power quality data. From the utility viewpoint, it would allow them to monitor power quality in a cost effective manner and assist in preventive and predictive maintenance besides helping them to fix differential tariff based on the quality of the delivered power. It may also turn out to be a smart tool for them to penalize the consumer polluting the power quality.
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Training and selection of police officers: toward a community police modelStevens, Gale Patrick 30 April 2005 (has links)
In the study of Training and Selection of Police Officers: Toward a Community Police Model the researcher relied on data gathered using questionnaires distributed in a broad geographical range and among a diverse but relevant respondent population. Samples were obtained from police officers, and candidate officers in training and citizens from the southeastern and northeastern sections of the United States.
Overall accuracy of survey documents is believed to be high. Survey documents were tested using a Chronbach's alpha test for validity and were constructed around a Likert type scale for responses. Analysis of data was accomplished using a one way analysis of variance (ANOVA) Tukey post hoc test with a .05 level of significance.
Outcomes suggested a relationship between more conservative belief patterns among police officers and their post secondary education levels. Additional possibilities were noted in the overall training systems related to the police respondents as in alignment with current needs for traditional policing but, not necessarily adequate for community policing needs. These views also proceeded along educational lines. In addition, outcomes of researched based secondary education models constructed during the research, and even European models for police selection and training may offer some solutions for police in the United States. Other valuable points found during the study were indicators that careful personnel selection and college education when found in predominance among members, seemed to positively alter the general working environment of one police agency involved in the study. / Political Practice / D.Litt. et Phil.(Police Science)
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Training and selection of police officers: toward a community police modelStevens, Gale Patrick 30 April 2005 (has links)
In the study of Training and Selection of Police Officers: Toward a Community Police Model the researcher relied on data gathered using questionnaires distributed in a broad geographical range and among a diverse but relevant respondent population. Samples were obtained from police officers, and candidate officers in training and citizens from the southeastern and northeastern sections of the United States.
Overall accuracy of survey documents is believed to be high. Survey documents were tested using a Chronbach's alpha test for validity and were constructed around a Likert type scale for responses. Analysis of data was accomplished using a one way analysis of variance (ANOVA) Tukey post hoc test with a .05 level of significance.
Outcomes suggested a relationship between more conservative belief patterns among police officers and their post secondary education levels. Additional possibilities were noted in the overall training systems related to the police respondents as in alignment with current needs for traditional policing but, not necessarily adequate for community policing needs. These views also proceeded along educational lines. In addition, outcomes of researched based secondary education models constructed during the research, and even European models for police selection and training may offer some solutions for police in the United States. Other valuable points found during the study were indicators that careful personnel selection and college education when found in predominance among members, seemed to positively alter the general working environment of one police agency involved in the study. / Political Practice / D.Litt. et Phil.(Police Science)
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The classical in the contemporary : contemporary art in Britain and its relationships with Greco-Roman antiquityCahill, James Matthew January 2018 (has links)
From the viewpoint of classical reception studies, I am asking what contemporary British art (by, for example, Sarah Lucas, Damien Hirst, and Mark Wallinger) has to do with the classical tradition – both the art and literature of Greco-Roman antiquity. I have conducted face-to-face interviews with some of the leading artists working in Britain today, including Lucas, Hirst, Wallinger, Marc Quinn, and Gilbert & George. In addition to contemporary art, the thesis focuses on Greco-Roman art and on myths and modes of looking that have come to shape the western art historical tradition – seeking to offer a different perspective on them from that of the Renaissance and neoclassicism. The thesis concentrates on the generation of artists known as the YBAs, or Young British Artists, who came to prominence in the 1990s. These artists are not renowned for their deference to the classical tradition, and are widely regarded as having turned their backs on classical art and its legacies. The introduction asks whether their work, which has received little scholarly attention, might be productively reassessed from the perspective of classical reception studies. It argues that while their work no longer subscribes to a traditional understanding of classical ‘influence’, it continues to depend – for its power and provocativeness – on classical concepts of figuration, realism, and the basic nature of art. Without claiming that the work of the YBAs is classical or classicizing, the thesis sets out to challenge the assumption that their work has nothing to do with ancient art, or that it fails to conform to ancient understandings of what art is. In order to do this, the thesis analyses contemporary works of art through three classical ‘lenses’. Each lens allows contemporary art to be examined in the context of a longer history. The first lens is the concept of realism, as seen in artistic and literary explorations of the relationship between art and life. This chapter uses the myth of Pygmalion’s statue as a way of thinking about contemporary art’s continued engagement with ideas of mimesis and the ‘real’ which were theorised and debated in antiquity. The second lens is corporeal fragmentation, as evidenced by the broken condition of ancient statues, the popular theme of dismemberment in western art, and the fragmentary body in contemporary art. The final chapter focuses on the figurative plaster cast, arguing that contemporary art continues to invoke and reinvent the long tradition of plaster reproductions of ancient statues and bodies. Through each of these ‘lenses’, I argue that contemporary art remains linked, both in form and meaning, to the classical past – often in ways which go beyond the stated intentions of an artist. Contemporary art continues to be informed by ideas and processes that were theorised and practised in the classical world; indeed, it is these ideas and processes that make it deserving of the art label.
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Embryo Adoption: Implications of Personhood, Marriage, and ParenthoodMcMillen, Brooke Marie 14 April 2008 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / One’s personal claims regarding personhood will influence his moral belief regarding embryo adoption. In Chapter One, I consider the personhood of the human embryo. If the human embryo is a person, we are morally obligated to permit the practice of embryo adoption as an ethical means to save human persons. However, for those who do not claim that an embryo is a person at conception, embryo adoption is not a necessary practice because we have no moral obligation to protect them. There are still others who claim that personhood is gained at some point during gestation when certain mental capacities develop. I offer my own claim that consciousness and sentience as well as the potential to be self-conscious mark the beginning of personhood.
Embryo adoption raises several questions surrounding the institution of marriage. Due to its untraditional method of procreation, embryo adoption calls into question the role of procreation within marriage. In Chapter Two, I explore the nature of the marriage relationship by offering Lisa Cahill’s definition of marriage which involves both a spiritual and physical dimension, and then I describe the concept of marriage from different perspectives including a social, religious, and a personal perspective. From a personal perspective, I explore the relationship between marriage and friendship. Finally, I describe how the concept of marriage is understood today and explore the advantages to being married as opposed to the advantages of being single.
Embryo adoption changes the way we customarily think about procreation within a family because in embryo adoption, couples are seeking an embryo from another union to be implanted into the woman. This prompts some philosophers to argue that embryo adoption violates the marriage relationship. In Chapter Three, I further consider the impact of embryo adoption on the family as an extension of the marital relationship as well as the impact of embryo adoption on the traditional roles of motherhood and fatherhood. I examine motherhood by looking at how some philosophers define motherhood and when these philosophers claim a woman becomes a mother. After considering these issues regarding motherhood, I examine the same issues surrounding fatherhood.
Peg Brand, PhD., Chair
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