The IEEE Power over Ethernet (PoE) protocol is currently the most used standard for allowing Power Sourcing Equipment (PSE) to distribute power to Powered Devices (PD) through standard Ethernet cables, permitting devices to be added to a network without needing extra power cables.There exist many PSE manager circuits which can be used to easily distribute power to a handful of PDs, but a problem arises when more are desired, since very few of these circuits can communicate with other circuits, and thus can't coordinate power distribution with each other.The goal of this work was to discover the feature set of some popular PSE managers, discover any real-time requirements they may demand of a host, and to then use this knowledge to create an API which could coordinate multiple PSE managers to handle power distribution.The work was carried out with a study of three PSE managers (PD69200, LTC4291, and TPS23880), as well as study and experimentation of the real-time requirements. After this a series of different architectures were created and evaluated using a combination of analysis, questionnaires, and prototype implementation. The work resulted in a software architecture which allows any number of PSE managers of any model to be used simultaneously in a system, with minimal-to-zero considerations needing to be made for different PSE managers. This allows the system hardware to be designed free of any software considerations, and allows the user to operate the system similarly regardless of the underlying architecture.

This thesis addresses barriers to the widespread adoption of high-efficiency photovoltaic devices through the use of innovative semiconductor materials and device design. The feasibility of various strategies is explored through experimental characterization and modeling of semiconductor materials and devices. High-efficiency photovoltaic devices are made from epitaxially grown III-V semiconductor materials. Epitaxial devices are highly sensitive to lattice mismatch between the epi-layers and the substrate, requiring sophisticated substrate engineering or growth strategies to access materials outside of the lattice-matched regime. One promising strategy involves the electrochemical porosification of germanium on a lattice-mismatched silicon substrate to create a compliant interface for high-quality epitaxial growth of Ge, GaAs, and other equivalent-bandgap III-V semiconductors on silicon. This results in a threading dislocation density of ~10^4 cm^-2, a reduction of 4 to 6 orders of magnitude compared to direct epitaxy of germanium on silicon. This technology could enable the development of highly efficient III-V multi-junction photovoltaic devices on cost-effective silicon substrates that benefit from well-established commercial supply chains. In the first part, I present characterization of the electrical properties of porous germanium. Experimental measurements revealed conductivities ranging from 0.6 to 33 (x10^-3) Ohm^-1 cm^-1, depending on the morphology. The relationship between the electrical properties and the morphology is described using an electrostatic model that can be generalized to other porous semiconductors including silicon. For a compliant interface designed to integrate a standard triple-junction solar cell onto a silicon substrate, the porous Ge/Si layers are predicted to introduce < 0.01 Ohm cm^2 of series resistance to the device, which is sufficiently low for concentrated photovoltaic applications. Optoelectronic device modelling of the triple-junction solar cell on silicon demonstrates that III-V triple-junction solar cells fabricated on silicon using this compliant Ge/Si porous interface could achieve 93% of the efficiency of a comparable defect-free device. The remainder of this thesis is concerned with the design and characterization of photovoltaic devices optimized for monochromatic illumination, known as photonic power converters. Most commercially available photonic power converters are based on GaAs and are suitable for short-range photonic power transmission through optical fiber (< 1 km). Extended reach power-over-fiber systems require the use of photonic power converters that are compatible with longer-wavelength light, which travels further in optical fiber. One candidate material for this application is the semiconductor quaternary alloy InAlGaAs lattice-matched to InP for photonic power converter operation in the telecommunications O-band, near 1310 nm. I describe the design and characterization of multi-junction InAlGaAs/InP photonic power converters grown by molecular beam epitaxy, including the analysis of material properties and characterization of single- and dual-junction devices under 1319-nm laser illumination. Optically thick devices are found to be diffusion-limited and device simulations suggest that non-radiative recombination is significant. The performance of InAlGaAs tunnel diodes, which act as interconnections for the absorbing junctions within a multi-junction device, is demonstrated to be highly dependent on the growth temperature, with peak tunneling current densities exceeding 1200 A/cm^2 in the best measured devices. In addition to molecular beam epitaxy-grown InAlGaAs/InP devices, I also characterize single-junction O-band photonic power converters grown by metal-organic vapour phase epitaxy with two alternative absorber materials. A lattice-matched InGaAsP/InP device is compared to a more cost-effective lattice-mismatched GaInAs device grown on GaAs using a metamorphic buffer layer. Both devices are measured under 1319-nm laser illumination with a variety of beam sizes and peak efficiencies of 52.9% and 48.8% were measured for the InGaAsP/InP and the metamorphic-GaInAs/GaAs devices respectively. At illumination powers exceeding 100 mW, the performance begins to degrade with increasingly non-uniform illumination, indicating that illumination profiles should be as uniform as possible to maximize device performance.

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This study deals with power supply for network devices using existing structured cabling. Various power supplies are analysed including their limitations and also deals with measuring of the consumed energy. The outcome is 24-port passive PoE injector for remote power supply of network equipment. It's suitable namely for remote devices which lacks built-in PoE support as these do not need major modifications (using passive injection). Power options including current measurement may be done via administrative web interface.

Les pratiques physiques ont été introduites dans les lycées au XIXe siècle par les militaires et les médecins. L’histoire institutionnelle rend compte des aléas de leur introduction et de leur évolution dans le domaine particulier de l’éducation physique. Mais, étonnamment, les historiens le font en occultant le corps qui est pourtant le cœur de cette discipline d’enseignement. Michel de Certeau écrit d’ailleurs à ce propos : « chaque société a “son” corps, tout comme elle a sa langue constituée par un système plus ou moins raffiné de choix parmi un innombrable de possibilités phonétiques, lexicales et syntaxiques ». Ce travail de doctorat vise donc à étudier les raisons qui ont conduit le ministère de l’Instruction publique à intégrer ces pratiques dans les emplois du temps des élèves. Afin d’éviter des confusions entre “l’école des notables” et “l’école du peuple”, seul le lycée de Besançon est étudié. Pour atteindre cet objectif, les travaux de recherche se sont attachés à appréhender autant les représentations du corps que les attentes des familles bisontines et celles des hommes politiques impliqués dans cette question de l’éducation corporelle scolaire. Les outils proposés par Michel Foucault sont convoqués et adaptés pour étudier le contrôle des corps. Plus encore, le concept d’autonomie, développé par Alain Ehrenberg, est lui aussi exploité autour de la vaste question pédagogique dépassant la discipline « éducation physique ». Les résultats de cette recherche monographique sont présentés à partir de trois périodes : 1850-1890, une autonomie inexistante lors d’une période de dressage des corps ; de 1890 à la Première Guerre mondiale, une autonomie proposée qui permet l’introduction du sport dans les lycées mais un contrôle des corps toujours intense et, enfin, une autonomie tolérée par obligation avec une reprise en main du contrôle. / Physical activities were introduced into the high school curriculum in the 19th century by physicians and the military. Institutional historians show how physical activities were included in the course called Physical Education and how they evolved. Surprisingly, however, historians who have studied this material never mention the body, which is at the center of this discipline. Michel de Certeau wrote, “Each society has its own body, just as it has its own language made up of a more or less refined system of choice from among countless phonetic, lexical and syntactic possibilities". This thesis studies the reasons that led the French Ministry of Public Education to include Physical Education in students’ scheduling; it uses the case of a high school in Besançon, France. (The students of all high schools during the period studied came from bourgeois families.) Thesis research focuses on the representations of the body, the expectations of the families of the students and the expectations of the politicians who introduced physical education into schools. Research tools developed by Michel Foucault were adapted for studying power over the body. Alain Ehrenberg’s concept of autonomy was used to understand how knowledge is acquired (pedagogy). Research results are presented for three periods: from 1850 to 1890 when autonomy was non-existent in physical education; from 1890 to World War I, when sport was introduced into high schools but physical education policies were just as strict; and from 1918 to 1935 when toleration of autonomy was obligatory but the institution could take back control when it was deemed necessary.

The topic of this study, euthanasia, has become a modern-day issue that challenges some of societies traditionally held beliefs towards death and dying. This study drew upon the theoretical insights of Michel Foucault to provide a discursive analysis of the term euthanasia, and the issues surrounding the "right-to-die". It involved an analysis of primary texts from; nursing, general, and legal literature as well as the media between the years 2002-2004. Drawing upon data researched, the study analyses the main discourses regarding the practice of euthanasia for terminally ill individuals. The two competing discourses that emerged were what I have termed the sanctity-of life-discourse and the right-to-die discourse. The aim of the study was to uncover the discourses understanding of "truth" regarding the right-to-die. The analysis revealed that a small percentage of cancer sufferers (5%) die with their pain insufficiently treated and the right-to-die discourse claims that no individual should have to suffer needlessly, asserting the individuals right to autonomy. Directly opposing this is the sanctity-of life-discourse which states all life is sacred and nothing can justify euthanasia as an acceptable practice in society. My findings indicate the need for effective palliative care and pain management when caring for the terminally ill individual. The legal, ethical and moral implications of euthanasia are many and this study discusses the effects these may have on health professionals involved with the care of terminally ill patients. The study revealed an increasing deployment of the right-to-die discourse in the media and revealed concerns regarding the nursing professions lack of preparation to deal with euthanasia if it becomes a legal option in end of life care.

The topic of this study, euthanasia, has become a modern-day issue that challenges some of societies traditionally held beliefs towards death and dying. This study drew upon the theoretical insights of Michel Foucault to provide a discursive analysis of the term euthanasia, and the issues surrounding the "right-to-die". It involved an analysis of primary texts from; nursing, general, and legal literature as well as the media between the years 2002-2004. Drawing upon data researched, the study analyses the main discourses regarding the practice of euthanasia for terminally ill individuals. The two competing discourses that emerged were what I have termed the sanctity-of life-discourse and the right-to-die discourse. The aim of the study was to uncover the discourses understanding of "truth" regarding the right-to-die. The analysis revealed that a small percentage of cancer sufferers (5%) die with their pain insufficiently treated and the right-to-die discourse claims that no individual should have to suffer needlessly, asserting the individuals right to autonomy. Directly opposing this is the sanctity-of life-discourse which states all life is sacred and nothing can justify euthanasia as an acceptable practice in society. My findings indicate the need for effective palliative care and pain management when caring for the terminally ill individual. The legal, ethical and moral implications of euthanasia are many and this study discusses the effects these may have on health professionals involved with the care of terminally ill patients. The study revealed an increasing deployment of the right-to-die discourse in the media and revealed concerns regarding the nursing professions lack of preparation to deal with euthanasia if it becomes a legal option in end of life care.

Thesis (M.A.)--Trinity Evangelical Divinity School, Deerfield, Ill., 1999. / Abstract. Includes bibliographical references (leaves 98-104).

This thesis deals with design and implementation of multi-channel audio signal streaming via local network. The aim was to choose suitable processor for the transmission of up to 32 channels of audio signal, which will be used for implementation. Also the low-latency ASIO driver was studied and was used to provide timestamps for synchronization. The transmission protocol was designed for signaling and for the real time stream. The actual transmission is provided by TCP protocol. In conclusion, I created the application for development board with choosen MCU. Finally whole solution was tested with real data.