Dissertations / Theses on the topic 'Wage boards'
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Cockfield, Sandra A., and n/a. "The Interaction of Industrial Tribunals and Workplace Industrial Relations in Australia: the Metal trades, 1900 to 1929." Griffith University. Griffith Business School, 1998. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050914.170636.
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This thesis examines the influence of compulsory state arbitration and wages board systems on workplace industrial relations. Using an historical and comparative case study approach, the thesis researches workplace industrial relations at three firms operating in the metal industry between 1900 and 1929. A political economy perspective is employed to examine the interaction of institutional stnictures and economic and political processes in the regulation of the wage-effort bargain at the workplace. Key concepts are drawn from both mainstream industrial relations theory, in particular the Oxford School approach, and labour process theory. Drawing on the work of flanders, a distinction is made between the economic and political aspects of the wage-effort bargain through the differentiation of market relations and managerial relations. This thesis argues that arbitral and wages board systems interacted with a range of factors to shape and influence workplace industrial relations. In keeping with the political economy perspective, the thesis examines the economic, industry, technological, political, and institutional environment within which the three cases operated, identifying changes and trends in these factors during the period under review and their implications for workplace industrial relations. The three cases allowed a closer examination of the influence of these general trends on the development of workplace industrial relations. The cases demonstrate the diversity of the metals sector, each representing a different industry in that sector. Further, the cases differed in their geographic and jurisdictional location, allowing comparisons between Victoria and New South Wales to be made. An examination of the role of arbitral tribunals and wages boards argues that the tribunals used their ability to regulate and stabilise market relations to offset their intervention in managerial relations. In this respect the tribunals sought to engineer changes in managerial relations favourable to industry development and yet simultaneously obtain support from the unions through improvements in market relations. As a consequence of these conflicting objectives the tribunals often behaved in a contradictory manner. In addition, unintended consequences often flowed from tribunal regulation and were important in shaping events at the workplace. Thus while industrial tribunals sought to improve market relations, they inadvertently assisted workers to gain more influence over managerial relations. In each case the workplace was the site of much regulatory activity, whether initiated by management, unions or workers. However, the three cases each present a different pattern of workplace industrial relations in terms: of scope of regulation at the workplace; the role of unions; the nature of managerial strategy; the role of unions; and the implementation and enforcement of tribunals decisions. Moreover, the effect of arbitration and wages board systems at each workplace varied, with the influence of a particular matrix of industry, economic, technological and institutional conditions shaped at the workplace.
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Bamiedakis, Nikolaos. "Multimode polymer waveguides for high-speed on-board optical interconnects." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611251.
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Cho, Sang-Yeon. "High speed optical interconnection on electrical boards using embedded OE devices in polymer optical waveguides." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/14881.
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Arkeholt, Simon. "Induction in Printed Circuit Boards using Magnetic Near-Field Transmissions." Thesis, Linköpings universitet, Teoretisk Fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148788.
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In 1865 Maxwell outlined the theoretical framework for electromagnetic field propagation. Since then many important developments have been made in the field, with an emphasis on systems using high frequencies for long-range interactions. It was not until recent years that applications based on short-range inductive coupling demonstrated the advantages of using low frequency transmissions with magnetic fields to transfer power and information. This thesis investigates magnetic transmissions in the near-field and the possibility of producing induced voltages in printed circuit boards. A near-field magnetic induction system is designed to generate a magnetic flux in the very low frequency region, and used experimentally to evaluate circuit board induction in several interesting environments. The resulting voltages are measured with digital signal processing techniques, using Welch’s method to estimate the spectrum of the received voltage signal. The results show that the amount of induced voltage is proportional to the inverse cube of the transmission distance, and that the system is able to achieve a maximum induced voltage of 65 \micro V at a distance of 2.5 m and under line-of-sight conditions. It is also concluded that conductive obstructions, electromagnetic shielding and background noise all have a large impact on the obtained voltage, either cancelling the signal or causing it to fluctuate.
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Yousef, Hanna. "High Aspect Ratio Microstructures in Flexible Printed Circuit Boards : Process and Applications." Doctoral thesis, Uppsala University, Department of Engineering Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8565.
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Flexible printed circuit boards (flex PCBs) are used in a wide range of electronic devices today due to their light weight, bendability, extensive wiring possibilities, and low-cost manufacturing techniques. The general trend in the flex PCB industry is further miniaturization alongside increasing functionality per device and reduced costs. To meet these demands, a new generation of low cost manufacturing technologies is being developed to enable structures with smaller lateral dimensions and higher packing densities.
Wet etching is today the most cost-efficient method for producing a large number of through-foil structures in flex PCBs. However, conventional wet etch techniques do not allow for through-foil structures with aspect ratios over 1 – a fact that either necessitates thin and mechanically weak foils or puts severe limitations on the packing density. The fabrication techniques presented in this thesis allow for through-foil structures with higher aspect ratios and packing densities using wet etching. To achieve high aspect ratios with wet etching, the flex PCB foils are pre-treated with irradiation by swift heavy ions. Each ion that passes through the foil leaves a track of damaged material which can be subsequently etched to form highly vertical pores. By using conventional flex PCB process techniques on the porous foils, high aspect ratio metallized through-foil structures are demonstrated.
The resulting structures consist of multiple sub-micrometer sized wires. These structures are superior to their conventional counterparts when it comes to their higher aspect ratios, higher possible packing densities and low metallic cross-section. Furthermore, metallized through-foil structures with larger areas and more complicated geometries are possible without losing the mechanical stability of the foil. This in turn enables applications that are not possible using conventional techniques and structures. In this thesis, two such applications are demonstrated: flex PCB vertical thermopile sensors and substrate integrated waveguides for use in millimeter wave applications.
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Novak, Markus. "Low Cost Ultra-Wideband Millimeter-Wave Phased Arrays." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500574802418502.
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Cheng, Shi. "Integrated Antenna Solutions for Wireless Sensor and Millimeter-Wave Systems." Doctoral thesis, Uppsala universitet, Mikrovågs- och terahertzteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-111197.
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This thesis presents various integrated antenna solutions for different types of systems and applications, e.g. wireless sensors, broadband handsets, advanced base stations, MEMS-based reconfigurable front-ends, automotive anti-collision radars, and large area electronics. For wireless sensor applications, a T-matched dipole is proposed and integrated in an electrically small body-worn sensor node. Measurement techniques are developed to characterize the port impedance and radiation properties. Possibilities and limitations of the planar inverted cone antenna (PICA) for small handsets are studied experimentally. Printed slot-type and folded PICAs are demonstrated for UWB handheld terminals. Both monolithic and hybrid integration are applied for electrically steerable array antennas. Compact phase shifters within a traveling wave array antenna architecture, on single layer substrate, is investigated for the first time. Radio frequency MEMS switches are utilized to improve the performance of reconfigurable antennas at higher frequencies. Using monolithic integration, a 20 GHz switched beam antenna based on MEMS switches is implemented and evaluated. Compared to similar work published previously, complete experimental results are here for the first time reported. Moreover, a hybrid approach is used for a 24 GHz switched beam traveling wave array antenna. A MEMS router is fabricated on silicon substrate for switching two array antennas on a LTCC chip. A concept of nano-wire based substrate integrated waveguides (SIW) is proposed for millimeter-wave applications. Antenna prototypes based on this concept are successfully demonstrated for automotive radar applications. W-band body-worn nonlinear harmonic radar reflectors are proposed as a means to improve automotive radar functionality. Passive, semi-passive and active nonlinear reflectors consisting of array antennas and nonlinear circuitry on flex foils are investigated. A new stretchable RF electronics concept for large area electronics is demonstrated. It incorporates liquid metal into microstructured elastic channels. The prototypes exhibit high stretchability, foldability, and twistability, with maintained electrical properties.wisenet
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Granger, Amy. "Reproductive Freedom in the United States and Louisiana: An Assessment of the Last Decade, a Review of the Current Climate, And a Scenario for the Future." ScholarWorks@UNO, 2009. http://scholarworks.uno.edu/td/1086.
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Government began legislating abortion in the mid nineteenth century and has controlled access to this service for women ever since. With the creation of hospital boards after WWII, state control over access became further entrenched. Regulations and restrictions since Roe v. Wade limit the availability of abortion services for women served by Medicaid and other social assistance programs. The existence of a class bias around access can be seen throughout the topic's history and legislation has unfairly targeted and therefore disproportionately affects poor women. The data show that these restrictions have no impact on the number of unintended pregnancies over the last 20 plus years. Without the ability to personally fund the procedure, poor women do not enjoy the same choices as women in other social classes. In the next decade, we are likely to experience more of the same without having a realistic conversation about Medicaid funding of abortion.
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Min, Byung-Young. "A physics based investigation of gurney flaps for enhancement of rotorcraft flight characteristics." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33851.
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Helicopters are versatile vehicles that can vertically take off and land, hover, and perform maneuver at very low forward speeds. These characteristics make them unique for a number of civilian and military applications. However, the radial and azimuthal variation of dynamic pressure causes rotors to experience adverse phenomena such as transonic shocks and 3-D dynamic stall. Adverse interactions such as blade vortex interaction and rotor-airframe interaction may also occur. These phenomena contribute to noise and vibrations. Finally, in the event of an engine failure, rotorcraft tends to descend at high vertical velocities causing structural damage and loss of lives.
A variety of techniques have been proposed for reducing the noise and vibrations. These techniques include on-board control (OBC) devices, individual blade control (IBC), and higher harmonic control (HHC). Addition of these devices adds to the weight, cost, and complexity of the rotor system, and reduces the reliability of operations. Simpler OBC concepts will greatly alleviate these drawbacks and enhance the operating envelope of vehicles.
In this study, the use of Gurney flaps is explored as an OBC concept using a physics based approach. A three dimensional Navier-Stokes solver developed by the present investigator is coupled to an existing free wake model of the wake structure. The method is further enhanced for modeling of Blade-Vortex-Interactions (BVI). Loose coupling with an existing comprehensive structural dynamics analysis solver (DYMORE) is implemented for the purpose of rotor trim and modeling of aeroelastic effects.
Results are presented for Gurney flaps as an OBC concept for improvements in autorotation, rotor vibration reduction, and BVI characteristics. As a representative rotor, the HART-II model rotor is used.
It is found that the Gurney flap increases propulsive force in the driving region while the drag force is increased in the driven region. It is concluded that the deployable Gurney flap may improve autorotation characteristics if deployed only over the driving region. Although the net effect of the increased propulsive and drag force results in a faster descent rate when the trim state is maintained for identical thrust, it is found that permanently deployed Gurney flaps with fixed control settings may be useful in flare operations before landing by increasing thrust and lowering the descent rate.
The potential of deployable Gurney flap is demonstrated for rotor vibration reduction. The 4P harmonic of the vertical vibratory load is reduced by 80% or more, while maintaining the trim state. The 4P and 8P harmonic loads are successfully suppressed simultaneously using individually controlled multi-segmented flaps.
Finally, simulations aimed at BVI avoidance using deployable Gurney flaps are also presented.
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Camilo, Edson 1959. "Propostas de design de layout da PCI para redução de curto circuito de solda a onda, para processo de montagem de placa eletrônica = PCB layout design techniques for shortcircuit (bridging) reduction due to wave soldering in electronic board assembly." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260044.
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Orientador: Yuzo IanoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
Made available in DSpace on 2018-08-27T18:51:43Z (GMT). No. of bitstreams: 1 Camilo_Edson_M.pdf: 3518346 bytes, checksum: 0264cd60aaed512cef0dacda58a43540 (MD5) Previous issue date: 2015
Resumo: Este trabalho de Mestrado tem como objetivo contribuir para a área de placa de circuito impresso no que se refere ao projeto de layout focado não só em satisfazer as conexões das trilhas, mas nas regras de projeto com foco na redução de curto circuito de solda para o processo de solda por onda. Projetos de PCB (Printed Circuit Board) ou PCI (Placa de Circuito Impresso) envolvem uma série de conhecimentos no que se refere ao entendimento das funcionalidades dos circuitos e para tanto é importante que se faça o correto posicionamento dos componentes em grupos de circuitos pela funcionalidade; além disso, é importante que se conheça as regras de capacidade de corrente, de distâncias de isolação em função das tensões aplicadas, características de impedância, áreas de restrição mecânica entre outras. O que será visto neste trabalho está focado na aplicação de conceitos e considerações ligadas ao processo de montagem da placa eletrônica por solda a onda. Muitos dos defeitos que ocorrem num processo de montagem da PCB são atribuídos ao processo de montagem da PCB como, por exemplo, a temperatura da solda, o tempo de solda, quantidade de fluxo aplicado na placa, altura da onda de solda, etc. Recomendações sobre posicionamento de componentes PTH (Pin Through Hole) e SMD (Surface Mounting Devise) em relação ao sentido em que a PCB entra em direção à solda a onda, recursos de aplicação de serigrafia, tipos de laminados, de formato das ilhas de solda, adição de técnica de ladrão de solda e as recomendações da IPC (Association Connecting Electronics Industries) serão descritos neste trabalho. O correto entendimento dos defeitos que ocorrem durante o processo de montagem da PCB reflete na constante melhoria e aperfeiçoamento do projeto do layout da placa, que por sua vez resulta num processo de montagem de placa com menos ocorrência de defeitos de fabricação e consequentemente melhor qualidade do produto. Menos retrabalho nas PCBs significa menos custo de produção que reflete em maior lucro para as empresas. As propostas apresentadas neste trabalho são fruto de resultados práticos vivenciados na indústria e de pesquisa em literatura dos assuntos relacionados a defeitos em PCB e processos de solda por onda. O conjunto destas recomendações e seus resultados estão aqui descritos e ilustrados para servirem de referência aos futuros pesquisadores e leitores
Abstract: This work aims to contribute to the area of the printed circuit board in regard to layout design focused not only on satisfying the connections of the tracks but the design rules focused on reducing short- circuit solder for wave solder process . Projects PCB (Printed Circuit Board) involve a lot of knowledge when it comes to understanding the features of both circuit and is important to make the correct positioning of components into groups of circuits for feature addition is important to know the rules of current capacity, isolation distances depending on the applied voltage, impedance characteristics, areas of mechanical restrictions among others. What will be seen in this work is focused on application of concepts and considerations involved in the process of mounting the electronic board by solder wave. Many of the defects which occur in the process of assembling the PCB are assigned to the PCB assembly process such as the temperature of the solder, weld time , amount of flux applied to the board, solder wave height, etc. Recommendations on positioning components PTH( Pin Through Hole) and SMD( Surface Mounting Devise) relative to the direction in which the PCB goes toward the wave solder , screen printing application features , format type of solder lands , techniques of solder thief and the IPC ( Association Connecting Electronics Industries) recommendations will be described on this work . The correct understanding of the defects that occur during the assembly process of the PCB reflects on constant improvement and refinement of the board layout design, which in turn results in a process of mounting plate with fewer occurrences of defects in workmanship and consequently better quality product. Less rework means less PCBs in production cost which reflects in higher profits for companies. The proposals presented in this paper are the result of practical results experienced in industry and research literature on the subjects related to defects in PCB and wave solder processes. All these recommendations and their results are described and illustrated to better serve as reference for future researchers and readers
Mestrado
Telecomunicações e Telemática
Mestre em Engenharia Elétrica
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Hägglund, Eric. "Hogging Wealth : Dental analyses and an interdisciplinary study of the importance of pigs in prehistoric economies." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-324728.
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Studies in zoo-archaeological Neolithic contexts is the study of early animal domestication in relation to humans transitioning into a more sedentary species. Research and documentation are vital for reconstructing the mechanisms behind the threshold event. In this thesis, teeth of Suidae have been documented, analysed and compared osteologically and interpreted cross-culturally. In addition, aDNA, isotope, coat colour and physical mammal size affecting factor studies are presented to contextualise this thesis. Primary osteological methods are Mandibular Wear Stage (MWS), Linear Enamel Hypoplasia (LEH) recordings and lower jaw third molar (M3) length measurement. These methods can detect biometric domestication markers. The analysed Suidae teeth are from the Middle Neolithic site of Ajvide, Gotland, Sweden. A collection of modern wild boar act as Control sample. These teeth are compared primarily with known domestic pig teeth sample statistics from the British Late Neolithic site of Durrington Walls, Wiltshire, United Kingdom. Results indicate that the Middle Neolithic Pitted Ware culture (PWC) on Gotland hunted during winter and kept limited numbers of captive wild boars as totemic animals (pets) possibly bound to land and ancestry. However, an exact reconstruction of the PWC pig pet keeping practices are uncertain due to human-pig relationships being highly dynamic. Intensified pig hunting, not pet keeping should be considered early domestication. Domestication carries with it detectable biometric markers, which seem to be rare in the Neolithic. The cross-cultural comparisons on traditional pig ‘low-intensity husbandry’ can attest to a human-pig relationship of hunter-gatherers keeping captive wild animals. The pig was not a staple food for the PWC and thus not intensively hunted, rather pigs were rare ritualistic commodities and likely highly praised. Perpetuating this human-pig relationship could have been maintained by PWC ‘big men’ that engaged in socio-political lavish giveaways at festivities and funerals, thus ‘hogging wealth’, but never domesticated the pig.Studier i neolitiska zoo-arkeologiska sammanhang är undersökningar av tidig domesticering av djur i förhållande till mänsklighetens övergång till en mer stillasittande art. Forskning och dokumentation är avgörande för att rekonstruera mekanismerna bakom övergången. I denna uppsats har svintänder dokumenterats, analyserats och jämförts osteologiskt och tolkats tvärkulturellt. Studier i aDNA, isotop, pälsfärg och fysiska storleksfaktorer hos däggdjur presenteras också för att kontextualisera denna uppsats. Primära osteologiska metoder är tandslitage i underkäke (MWS), linjär emaljhypoplasi (LEH) och underkäkens tredje molar (M3) mätningar. Dessa metoder kan finna biometriska domesticeringsmarkörer. De analyserade svintänderna kommer ifrån den mellanneolitiska lokalen Ajvide, Eksta socken, Gotland. En samling moderna vildsvin agerar kontrollmaterial. Dessa tänder jämförs i första hand med kända domesticerade stenåldersvin från den Brittiska senneolitiska lokalen Durrington Walls, Wiltshire, Storbritannien. Resultaten indikerar på att den mellanneolitiska gropkeramiska kulturen (GRK), jagade på Gotland under vinterhalvåret och tog tillfånga ett begränsat antal svin som husdjur (totemdjur). Troligen togs svin tillfånga av olika ’hus’ till följd av att svinet var bundet till land och förfäder. En exakt rekonstruktion av GRKs svinhållningspraktik är dock osäkert på grund av att människo-svin relationer är dynamiska. Intensifierad svinjakt, inte tillfångatagandet av enstaka djur bör betraktas som tidig domesticering. Domesticering medför speciella biometriska markörer som är ovanligare i neolitisk tid. De tvärkulturella jämförelserna i traditionell "lågintensiv svinhållning" kan intyga på ett sådant förhållande mellan jägare-samlar grupper och vildsvin. Även om svinet inte var en basföda åt GRK, och därmed inte intensivt jagade, var svinen sällsynta ritualistiska handelsvaror och troligen högt värdesatta. Gropkeramiska "stormän" kan ha varit de drivande bakom denna praktik. Dessa ”stormän” engagerade sig i sociopolitiska aktiviteter, festligheter och begravningar, och därmed hade "hamstrat välstånd", men domesticerade aldrig svinet.
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Walker, David Douglas. "Approaches to assessing wage loss duration at the Workers’ Compensation Board of British Columbia." Thesis, 2003. http://hdl.handle.net/2429/14041.
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The Workers' Compensation Board of British Columbia monitors the wage loss duration of claims processed by their organization in order to assess organizational effectiveness and track a system cost driver. Multiple methods of calculating and reporting claim wage loss exist within the organization and performance results depend on which metric is used. Using existing WCB claim data, new measurements of claim duration are proposed and a comparison of wage loss metrics is conducted. The methods of wage loss measurement proposed in this study include predicted claim wage loss duration, cumulative wage loss paid to claims, claim age at closure identified using survival analysis, uncensored claim wage loss and the proportion of claims closed in the months following registration. These metrics are compared to the existing wage loss metrics which are retrospective wage loss duration and the Association of Workers' Compensation Boards of Canada complete duration. A comparison of wage loss metrics indicates that claim durations vary depending on which calculation is used. Cumulative wage loss duration is found to be higher than either of the existing metrics. Age at closure and uncensored claim duration are higher than predicted wage loss duration but lower than existing metrics. Each of the proposed metrics is capable of identifying the effect of claimant age and injury type when wage loss durations are compared across sub groups of claims. The study also indicates that in the current form, predicted wage loss duration does not accurately represent claim wage loss. The study identifies weakness in each method of computing claim wage loss and that depending on the use of the metric different measures may be appropriate. In some cases, using cumulative wage loss duration may be worthwhile to track longer claims. Uncensored claim duration and age at closure are more appropriate when comparisons of claim duration for different periods are required.
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Kuo, Ming-Chu, and 郭銘茱. "Millimeter-Wave Contactless Transition between Chip and Printed-Circuit Board." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/07421952041586291669.
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碩士國立交通大學
電信工程研究所
102
In this thesis, a new design of the contactless transition in the millimeter wave are proposed. With the theory of the resonator and filter, half-wavelength resonators are designed on the chip and printed circuit broad (PCB), and then the signal on the chip can be transmitted to the PCB via the coupling mechanism, realizing a low loss transition without any solid line connection between RF circuits. The half-wavelength resonators are designed on the chip (CMOS 0.18μm) and PCB (Rogers 5880, 5 mil) respectively, and the signal can be transimitted from the chip to the PCB efficiently through the coupling effect between the resonators. And the proposed transition is operated from 76 GHz to 81 GHz. Besides, the tolerance of the transition will be discussed. Furthermore, the design will take the measuring environment and results in account to improve the proposed transition and the method of measurement.
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Liu, Yujie Chen Ray T. "Investigation of polymer waveguides for fully embedded board-level optoelectronic interconnects." 2004. http://repositories.lib.utexas.edu/bitstream/handle/2152/2072/liuyj042.pdf.
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Liu, Yujie. "Investigation of polymer waveguides for fully embedded board-level optoelectronic interconnects." Thesis, 2004. http://hdl.handle.net/2152/2072.
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Choi, Jin Ho 1968. "Optoelectronic packaging and reliability of intra- and inter-board level guided-wave optical interconnection." Thesis, 2006. http://hdl.handle.net/2152/21909.
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We have demonstrated a flexible optical waveguide film with integrated VCSEL and PIN photodiode arrays for the fully embedded board level optical interconnection system. One of the most critical issues in the fully embedded board level optical interconnection system is the signal beam coupling between the guided-wave structure and the aperture of VCSEL (or PIN photodiode). The coupling efficiencies of spherical mirrors are calculated as a function of mirror radius. The optimum mirror radius ranges which are compatible with the fully embedded board level optical interconnection system are theoretically verified. The thermal characteristics of a thin film VCSEL are studied both theoretically and experimentally. The thermal resistances of VCSEL with variable thickness, ranging from 10 [mu]m to 200 [mu]m, have been determined by measuring the output wavelength shift as a function of the dissipated power. The thermal simulation results agree reasonably well with experimentally measured data. From the thermal management point of view, a thinned VCSEL has an exclusive advantage due to the reduction of the thermal resistance. The thermal resistance of 10 [mu]m thick VCSEL is 40 % lower than that of 200 [mu]m thick VCSEL. The theoretical analysis of thermal via effects is performed to determine optimized thickness ranges of thin film VCSEL for the fully embedded structure. Thermal resistance of the fully embedded thin film VCSEL with closed and open thermal via structures are also evaluated with the suitable VCSEL thickness reported. The high-performance computing system is demonstrated using a 16-channel optical backplane using thin film volume holographic gratings. The optical backplane contains TO-46-Can-packaged VCSELs and photodiodes as an optical transmitter and receiver, respectively. Optical packaging plates are fabricated for 4 X 8 array packaging for 16-VCSELs and 16-Photodiodes. Packaging issues including crosstalk and alignment tolerance are studied to design a low cost optical packaging scheme. Thin film volume hologram grating is fabricated on glass substrate to redirect light beams. An individual single channel performs at a 100 MHz data transfer rate. The high-performance computing system using 16-channel optical backplane is demonstrated at a 1.6 Gbps data transmission.text
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Liou, Jie-Kang, and 劉介剛. "Design and Measurement of Millimeter-Wave Contactless Transition between Active Chip and Printed-Circuit Board." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/a94r78.
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碩士國立交通大學
電信工程研究所
103
In this thesis, two circuits are designed for 77GHz automotive radar system; one is a novel contactless transition of the chip to the printed circuit board and the other is an integration of low noise amplifier (LNA) and resonator in TN90GUTM CMOS technology. LNA is used as the validation of the first transition. The contactless transition of the chip to the printed circuit board is designed. With the theory of the resonator and filter, half-wavelength resonators are designed on the chip and printed circuit broad (PCB), and then the signal on the chip can be transmitted to the PCB via a low loss coupling mechanism. In addition, I consider the high frequency measurement, tolerance, measurement environment and implement results, and then summarize various methods of high-frequency measurement. The other circuit is a low noise amplifier (LNA) integrated with a coupled resonator on the chip. A low noise amplifier is using inductive degeneration architecture in cascade. This architecture provides the high gain, low noise figure and good isolation.
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Lin, Lei Chen Ray T. "Integration of thin film GaAs MSM photodetector in fully embedded board-level optoelectronic interconnects." 2004. http://repositories.lib.utexas.edu/bitstream/handle/2152/2070/linl042.pdf.
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Lin, Lei. "Integration of thin film GaAs MSM photodetector in fully embedded board-level optoelectronic interconnects." Thesis, 2004. http://hdl.handle.net/2152/2070.
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Chen, Yen-Tso, and 陳彥佐. "A Low-Cost and Low-Power Integrated Millimeter-Wave Transceiver in CMOS with On-Board Antenna Assembly." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/63685838827776309796.
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碩士國立臺灣大學
電子工程學研究所
97
This thesis focuses on design of 60-GHz integrated circuits and antennas, which must be used for high-speed wireless transmission. Although such high frequency circuits only implemented in III-V compound semiconductor in the past, nowadays, gaining the advantage of Moore''s law sustained, CMOS transistors with cut-off frequencies above 100 GHz turn out to be the best candidate for mm-Wave integrated circuits, for its familiar with digital circuits and integrated systems. Design considerations for 60-GHz wireless transmission would be discussed first. Describe many challenges in design of mm-Wave circuits in silicon and interface. And then we would present a fully-integrated 60-GHz transceiver system with on-board antenna assembly. Incorporating on-off keying (OOK) modulation and low-cost antenna design, this prototype provides a low-power solution for several Gb/s wireless communications. The enhanced OOK modulator/demodulator obviates baseband and interface circuitry, revealing a compact solution. Two antenna structures, folded dipole and patch array, are employed to fully examine the performance. Connecting to chip with bond wires, we use some techniques to alleviate the impedance issues. This design is fabricated in digital 90-nm CMOS technology; the transmitter and the receiver consume 183 and 103 mW and occupy 0.43 and 0.68 mm^2, respectively. With folded dipole antenna, the transceiver demonstrates error-free operation (BER < 10−12) for 2^31 − 1 PRBS of 1.5 Gb/s over a distance of 6 cm. With 4 × 3 patch antenna arrays, the transceiver achieves error-free operation (BER < 10^−12) for 2^31 − 1 PRBS of 1 Gb/s over a distance of 61 cm. Finally, we also design the antenna on board suitable for flip-chip interconnections, which is convinced of more compact solution.
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Fillion, Eric. "The Cinema of the Quiet Revolution: Quebec’s Second Wave of Fiction Films and the National Film Board of Canada, 1963-1967." Thesis, 2012. http://spectrum.library.concordia.ca/973697/1/Eric%2DFillion%2DMA%2DThesis.pdf.
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Film historians situate the birth of le cinéma québécois in the late 1950s with the emergence – within the National Film Board of Canada (NFB) – of an Équipe française whose Direct Cinema revolutionized documentary filmmaking. The grand narrative of Quebec national cinema emphasises the emancipating qualities of this cinematographic language and insists that it contributed to a collective prise de parole and Quebec’s ascension to modernity. Film historians mythologize the cinema of the Quiet Revolution (1958-1967) by inscribing the fiction films of the 1960s within the trajectory of Direct Cinema. Borrowing from Jocelyn Létourneau, the present thesis uses the concept of community of communication to investigate the documentary-to-fiction transition that accompanied the creation of the NFB’s Production française in the mid-1960s. The argument advanced here is that Quebec’s francophone filmmakers, between 1963 and 1967, distanced themselves from documentary filmmaking – including Direct Cinema – to explore the dramatic form and feature length format. They formed a tightly-knit community of communication whose actions, written works and films explained, legitimized and promoted the notion that Quebecers needed a commercial feature film industry of their own. The most prominent members of the Production française – Gilles Carle, Gilles Groulx and Arthur Lamothe to name but a few – played a preponderant role in this process. They articulated and disseminated an elaborate narrative which allowed them to consolidate their status as auteurs within a post-Duplessis Quebec. The present thesis reconstructs and analyzes the above filmmakers’ narrative to demythologize – and develop an alternative reading of – the cinema of the Quiet Revolution.
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McLeod, Ian. "On-board data reduction for the Envisat Advanced Synthetic Aperture Radar : evaluation of the impact on interferometric and wave mode applications." Thesis, 1995. http://hdl.handle.net/2429/4390.
Full textAbstract:
The ENVISAT remote sensing satellite, to be launched by the European Space Agency in
1998, will carry the Advanced Synthetic Aperture Radar (ASAR) microwave sensor. In order to
ease the severity of data storage and downlink restrictions, an on-board SAR data reduction
algorithm was designed by MacDonald Dettwiler and Associates (MDA) for EN VIS A T in 1993
[14]. This algorithm, called Flexible Block Adaptive Quantization (FBAQ) was tested extensively
during development, to determine the impact of the algorithm on SAR image quality.
However, many common uses of SAR data involve further processing of the SAR images.
Two very common examples of this are Interferometric SAR (InSAR) where phase differences
between two SAR images of a common scene can be used to estimate topography, and Wave Mode
SAR, where the power spectrum of SAR images of ocean waves are used to determine wave
characteristics such as direction and wavelength. For these applications, various qualities of the
SAR data are exploited which may not be directly related to image quality.
Therefore, in this study, an extension of the previous work performed at MDA, the
evaluation of the FBAQ algorithm was expanded to include the SAR applications of Interferometry
and Wave Mode. The goals of the work were first to quantitatively assess the degradation of InSAR
and Wave Mode results due to FBAQ, and secondly to determine if the quality of the results were
acceptable.
To accomplish the above goals, Wave Mode and InSAR processing was performed on ERS-
1 SAR data (modified to reflect the properties of ENVISAT data [16]) that had been encoded using FB AQ. Error measures taken against results produced using un-encoded data were used to quantify
the impact of FBAQ on both InSAR height estimation and Wave Mode ocean parameter
estimation. For InSAR, all possible data reduction ratios were used to determine which was
acceptable for precision generation of Digital Elevation Models (DEMs). For Wave Mode, only 8-
bits/sample to 2-bits/sample FBAQ was used due to storage limitations during acquisitions over
oceans. To determine whether the quality of the FBAQ Wave Mode results were acceptable, they
were compared to 2-bits/sample linearly truncated Wave Mode data, which represents one of the
current methods used to compress Wave mode data aboard ERS-1 and ERS-2.
The results of the study were as follows. For InSAR, only 4-bit FBAQ, with an average RMS
height estimation uncertainty increase of less than 3 %, was found to produce topographical
estimation acceptable for precision DEM generation. The 4-bit FBAQ also presented no problems
for image registration and phase unwrapping, two important processing steps in InSAR processing.
It was verified, however, that InSAR processing was also possible for 3-bit and 2-bit FBAQ
encoding levels, which may find use in lower precision mapping. As well, important insights were
gained into the characterization and spatial distribution of FBAQ encoding noise and coherence
magnitude degradation, important factors in interferometric quality.
For Wave Mode, the 2-bit FBAQ was found to produce results of better quality than those
currently available using the 2-bit linear truncation option of ERS-1 and ERS-2. Location of
spectral peaks in the ESA Wave Product were on par with 8-bit data, while the spectral peak
magnitudes were degraded by about 10 %. This compares favorably, however, to the current 2-bit
Wave Mode data which was found to experience degradation as high as 20%. As well, insight was
gained into the spectral error distribution of FBAQ data, the impact of ships within the wave scene, the importance of normalization procedures in wave mode analysis, and the impact of data
saturation on FBAQ data quality.
Overall, the FBAQ algorithm was found to perform acceptably well for InSAR and Wave
Mode applications.
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Kumar, Vijay. "Installation and Operation of Air-Sea Flux Measuring System on Board Indian Research Ships." Thesis, 2017. http://etd.iisc.ernet.in/2005/3778.
Full textAbstract:
Exchange of mass (water vapor), momentum, and energy between atmosphere andocean has profound influence on weather and climate. This exchange takes place at the air-sea interface, which is part of the marine atmospheric boundary layer. Various empirical relations are being used for estimating these fluxes in numericalweather and climate models but their accuracies are not sufficiently verified or tested over the Indian Ocean. The main difficulty is that vast areas of open oceans are not easily accessible. The marine environment is very corrosive and unattended long term and accurate measurements are extremely expensive. India has research ships that spend most of their time over the seas around India but that opportunity is yet to be exploited. To address this, an air-sea flux measurement system for operation on board research ships was planned. The system was tested on board Indian Research Vessels ORV SagarKanya during its cruise SK-296 in the Bay of Bengal (BoB) in July-August 2012, and NIO ship Sindhu Sadhana in June-July 2016. The complete set included instruments for measuring wind velocity, windspeed and direction, air and water temperature, humidity, pressure, all components of radiation and rainfall. In addition, ship motion was recorded at required sampling rate to correct for wind velocity. The set up facilitates the direct computation of sensible and latent heat fluxes using the eddy covariance method.
In this thesis, design and installation of meteorological and ship motion sensors onboard research ships, data collection and quality control, computation of fluxes of heat, moisture and momentum using eddy covariance method and their comparison with those derived from bulk method are described. A set of sensors (hereafter, flux measuring system) were mounted on a retractable boom, ~7 m long forward of the bow to minimize the flow disturbance caused by the ship superstructures. The wind observed in the ship frame was corrected for ship motion contaminations. During the CTCZ cruise period true mean wind speed was over 10 m/s and true wind direction was South/South-Westerly. True windspeedis computed combiningdata from the anemometer a compass connected to AWS and a GPS. Turbulent fluxes were computed from motion-corrected time-series of high frequency velocity, water vapor, and air temperature data. Covariance latent heat flux, sensible heat flux, and wind stress were obtained by cross-correlating the motion-corrected vertical velocity with fast humidity fluctuations measured with anIR hygrometer, temperate fluctuation from sonic anemometer and motion-corrected horizontal windfluctuations from sonic anemometer, respectively.
During the first attempt made in July-August 2012 as part of a cruise of CTCZ monsoonresearch program, observations were mainly taken in the North Bay of Bengal. The mean air-temperature and surface pressure were ~28 Deg C and ~998 hPa, respectively. Relative humidity was ~80%. Average wind speed varied in the range 4-12 m/s. The mean latent heat flux was 145 W/m2 , sensible heat flux was ~3 W/m2 and average sea-air temperature difference was ~ 0.7°C.
The Bay of Bengal boundary layer experiment (BoBBLE) was conducted during June-July 2016 and the NIO research ship Sindhu Sadhana was deployed. The same suite of sensors installed during CTCZ were used during BoBBLE. During daytime, peaks of hourly net heat fluxes (Qnet ) were around 600 Wm-2(positive if into the sea), whereas, night time values were around -250 W m-2. Sea surface temperature was always >28°C and maximum air temperature exceeded 29°C. During the experimental period the mean Qnet was around -24 Wm-2 from both eddy covariance and conventional bulk methods, but there are significant differences on individual days.The new flux system gives fluxes which are superior to what was available before.
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Ulrich, Neil. "Disclosure of executive remuneration as a corporate governance control measures in South African listed companies." Thesis, 2010. http://hdl.handle.net/10500/4789.
Full textAbstract:
Corporate governance and executive remuneration are not new phenomena,
but have erupted to the forefront of corporate, academic and public attention as
a result of a series of well publicized corporate collapses and scandals over the
last decade, which have raised both a curiosity of executive remuneration
levels, and an awareness of the potential impact of conflicts of interest between
owners and executives in modern corporations. Although literature on corporate
governance and executive remuneration in general is plentiful, there is a lack of
comment on the relationships between certain specific components of these two
broad constructs. These specific components, such as disclosure, executive
remuneration and governance needed to be analysed individually before they
could be combined into a whole that explains both their interrelationships with
each other and the larger corporate governance sub-system, and ultimately in
the corporation, as an organisational system.
In view of greater globalisation of the world economy, and the market for
executive talent, the consequent reforms in the fields of corporate governance
and executive remuneration, as well as the changing competitive dynamics of
modern corporations, it was necessary to examine whether traditional theory
and regulatory frameworks have kept pace with corporate development. A
review of both classic and current literature show vastly different approaches to
both executive remuneration and corporate governance mechanisms practiced
around the world. There is however a noticeable trend towards convergence of
these different sub-systems.The most prominent differences in respect of these
sub-systems relate to the extent to which disclosures are made. Some of these
issues relate to full or limited disclosure, internal or external corporate
governance measures to regulate executive remuneration, and differences in
respect of a narrow shareholder focus or broad stakeholder focus of different
interests in an organisation.Business Leadership
Ph.D. (Business Leadership)
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Baczynskyj, Anastasia. "Learning How to Be Ukrainian: Ukrainian Schools in Toronto and the Formation of Identity, 1947-2009." Thesis, 2009. http://hdl.handle.net/1807/18089.
Full textAbstract:
This thesis follows the development of the Ukrainian identity in Toronto since World War II. It explores the formation of collective memory by the Third Wave of Ukrainian immigration who arrived in Toronto in the early 1950s and the crystallization of a particular Ukrainian identity within this community. In particular, it looks at the role of the Ukrainian schooling system as an important institution shaping the community’s understanding of Ukrainian identity. It also discusses the challenges to that identity since the arrival of the Fourth Wave of Ukrainian immigration which began in 1991. It charts the intra-group tensions which arose in the community due to different understandings of what it means to be Ukrainian and describes how competing Ukrainian identities found within the Fourth Wave of immigration have shifted the dynamic in the Ukrainian community, explaining low involvement of Fourth Wave members within community institutions such as the Ukrainian school.
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Stasko, Carly. "A Pedagogy of Holistic Media Literacy: Reflections on Culture Jamming as Transformative Learning and Healing." Thesis, 2009. http://hdl.handle.net/1807/18109.
Full textAbstract:
This qualitative study uses narrative inquiry (Connelly & Clandinin, 1988, 1990, 2001) and self-study to investigate ways to further understand and facilitate the integration of holistic philosophies of education with media literacy pedagogies. As founder and director of the Youth Media Literacy Project and a self-titled Imagitator (one who agitates imagination), I have spent over 10 years teaching media literacy in various high schools, universities, and community centres across North America. This study will focus on my own personal practical knowledge (Connelly & Clandinin, 1982) as a culture jammer, educator and cancer survivor to illustrate my original vision of a ‘holistic media literacy pedagogy’. This research reflects on the emergence and impact of holistic media literacy in my personal and professional life and also draws from relevant interdisciplinary literature to challenge and synthesize current insights and theories of media literacy, holistic education and culture jamming.