En esta tesis se estudia el dise¿no de decodificadores no-binarios para la correcci'on de errores en sistemas de comunicaci'on modernos de alta velocidad. El objetivo es proponer soluciones de baja complejidad para los algoritmos de decodificaci'on basados en los c'odigos de comprobaci'on de paridad de baja densidad no-binarios (NB-LDPC) y en los c'odigos Reed-Solomon, con la finalidad de implementar arquitecturas hardware eficientes. En la primera parte de la tesis se analizan los cuellos de botella existentes en los algoritmos y en las arquitecturas de decodificadores NB-LDPC y se proponen soluciones de baja complejidad y de alta velocidad basadas en el volteo de s'¿mbolos. En primer lugar, se estudian las soluciones basadas en actualizaci'on por inundaci 'on con el objetivo de obtener la mayor velocidad posible sin tener en cuenta la ganancia de codificaci'on. Se proponen dos decodificadores diferentes basados en clipping y t'ecnicas de bloqueo, sin embargo, la frecuencia m'axima est'a limitada debido a un exceso de cableado. Por este motivo, se exploran algunos m'etodos para reducir los problemas de rutado en c'odigos NB-LDPC. Como soluci'on se propone una arquitectura basada en difusi'on parcial para algoritmos de volteo de s'¿mbolos que mitiga la congesti'on por rutado. Como las soluciones de actualizaci 'on por inundaci'on de mayor velocidad son sub-'optimas desde el punto de vista de capacidad de correci'on, decidimos dise¿nar soluciones para la actualizaci'on serie, con el objetivo de alcanzar una mayor velocidad manteniendo la ganancia de codificaci'on de los algoritmos originales de volteo de s'¿mbolo. Se presentan dos algoritmos y arquitecturas de actualizaci'on serie, reduciendo el 'area y aumentando de la velocidad m'axima alcanzable. Por 'ultimo, se generalizan los algoritmos de volteo de s'¿mbolo y se muestra como algunos casos particulares puede lograr una ganancia de codificaci'on cercana a los algoritmos Min-sum y Min-max con una menor complejidad. Tambi'en se propone una arquitectura eficiente, que muestra que el 'area se reduce a la mitad en comparaci'on con una soluci'on de mapeo directo. En la segunda parte de la tesis, se comparan algoritmos de decodificaci'on Reed- Solomon basados en decisi'on blanda, concluyendo que el algoritmo de baja complejidad Chase (LCC) es la soluci'on m'as eficiente si la alta velocidad es el objetivo principal. Sin embargo, los esquemas LCC se basan en la interpolaci'on, que introduce algunas limitaciones hardware debido a su complejidad. Con el fin de reducir la complejidad sin modificar la capacidad de correcci'on, se propone un esquema de decisi'on blanda para LCC basado en algoritmos de decisi'on dura. Por 'ultimo se dise¿na una arquitectura eficiente para este nuevo esquema / García Herrero, FM. (2013). Architectures for soft-decision decoding of non-binary codes [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/33753 / TESIS / Premios Extraordinarios de tesis doctorales

Inverting or flipping the bits of an integer is the third and last method of “bit bashing” we will discuss. There are two ways to invert bits: either flip all of them at once or use a mask to identify which bits to flip and which to leave alone.

Varje år drabbas 4000 personer av malignt melanom i Sverige. Prognosen är god vid tidig upptäckt. Ändå dör ca 20 % av de som drabbas. Ett förbättringsarbete initierades för att utveckla vårdprocesser för dessa patienter. Denna studie har syftat till att utveckla kunskaper om situationsbaserade erfarenheter av vad processen i förbättringsarbetet har inneburit i relation till sjuksköterskors, läkares och medicinska sekreterares egna insatser för projektmålen och en personcentrerad vård. För studien av förbättringsarbetet har Critical Incident Technique (CIT) används som metod. 84 situationer samlades in från projektdeltagare genom korta återkommande intervjuer under projekttiden. Resultatet visar att deltagarna befinner sig i situationer av ambassadörskap, självrannsakan och fristad. Situationer av ambassadörskap är viktiga för projektets riktning framåt men dessa situationer är inte oberoende av situationer av självrannsakan och situationer av ”fristad”. Det är snarare relationen dem emellan som har en viktig dynamisk kraft. Slutsatsen i studien av förbättringsarbetet är att när deltagare i ett förbättringsarbete får möjlighet att ändra på logistik och struktur som bygger på ”stuprörstänk”, professionsorientering och funktion så får det positiva konsekvenser för ett personcentrerat arbetssätt, i arbete med patienter och i arbete med projekt. / Every year 4,000 persons are diagnosed with malignant melanoma in Sweden. The prognosis is good if it is detected early. Nevertheless, about 20% of those who are diagnosed die of the disease. An improvement project was initiated for developing care processes for these patients at a local clinic in central Sweden. This study aimed to describe the knowledge derived from participants in the project regarding their own situated efforts to achieve a person-centered care for these patients. Critical Incident Technique was used as a method. 84 incidents were gathered from the participants through recurrent interviews during the project process. The results show that participants find themselves in situations of being ambassadors for the project where everything flows forward in the project, being in situations of self-examination and doubt about own achievements in the project and finally being in situations of sanctuary as a temporary moral refuge and stress release concerning the project. Situations of ambassadorship are important for the project's direction forward toward the project goal but these situations are not independent of situations of self-examination and situations of sanctuary. The relation between these situations has an important dynamic force that need to be further explored.

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Este estudo dedica-se a investigar aspectos da percepção espacial estruturando-se como um laboratório de ações artísticas que visam criar alterações na configuração de espaços projetados – galerias, ateliers e ambientes residenciais – além de atuar como elementos estimuladores da experiência na fronteira entre corpo e arquitetura. As intervenções que executei ao longo do período de pesquisa são analisadas de forma comparativa, fazendo referência a obras de artistas e arquitetos assim como textos críticos selecionados tratando da percepção espacial sob o prisma da teoria contemporânea na arte e na arquitetura. A partir desta temática, a pesquisa organiza-se mais especificamente em torno dos conceitos de presença (corpo), materialidade (a concretude daquilo que ocupa o espaço) e vazio que são discutidos com base nas intervenções a fim de ampliar a compreensão sobre as possibilidades de interação entre arte e arquitetura. / This study aims to investigate aspects of spatial perception and it's organized as a laboratory of artistic actions thought to create alterations on the configuration of the projected and built space - especially galleries, art studios and residential environments. In addition to that, the artistic actions act as propellers for the perceptual experience that occupies the border between the body and the world. The artistic interventions produced by me during the period of the research are here analyzed in a comparative manner, making reference to the works of artists and architects as well as texts that have been selected to address the issue of spatial perception through the lenses of contemporary art and architecture. From this theme the research arrives at the more specific concepts of presence, matter and void, which are discussed based on the interventions in order to create a deeper understanding regarding the possibilities of interaction between art and architecture.

本研究以台股初次公開上市櫃公司IPO後首日股價報酬熱度及機構投資人首月脫售持股情況兩指標，試著預測IPO後一年期股價表現。本篇論文蒐集自2010年起至2014年3月31日止252筆在台灣初次上市櫃公司資料，並將其依首日報酬熱度由低至高依序分為Cold、Cool、Hot及Extra-Hot四種群組。研究結果顯示，Cold IPOs長期傾向擁有較佳超額報酬，而首日報酬熱度最高的Extra-Hot IPOs長期則表現最差。也證實了IPOs股票折價承銷理論中所提，公司若在IPO初期出現較大幅度的折價讓利，長期將導致公司因降價求售股票而遭受價值損害。 另外，本文也以三大法人脫售持股比例為分組，探討法人是否具有長期股價預測能力。過去一些國內外文獻皆以全部樣本直接討論法人脫售行為對長期績效表現的影響，本研究進一步將252筆公司資料分為：(1)初次上市櫃前曾在興櫃市場掛牌交易及(2)上市櫃前未曾在興櫃市場掛牌交易 兩群組。結果顯示，機構投資人只有在對IPO個股具有優勢資訊時(曾在興櫃市場交易)，才能顯著對公司優劣做出判斷，進而對長期績效表現做出預測；反之，若是未曾興櫃之IPO個股，機構投資人對其一年期股價表現則無顯著預測能力。本研究最後以首日報酬率、承銷商聲譽、IPO時大盤指數、法人首月脫售持股比例及IPO時個股市值等五大因素，做出IPO一年期超額報酬預測式。結果發現只有IPO時大盤指數、法人脫售持股比例及首日報酬熱度顯著影響一年期超額報酬率。其他變數如承銷商聲譽及IPO時公司市值皆只具經濟意義，對一年期超額報酬並無顯著影響。 / In this article, we are trying to predict the 1-year excess returns of the IPOs by observing two indicators：The first-day return and the flipping level by institutional investors. We use the 252 IPOs data in Taiwan stock market from 2010 to March 31th, 2014 and divide it into 4 different levels by the first-day return：Cold IPOs, Cool IPOs, Hot IPOs and Extra-Hot IPOs. And it turns out the Cold IPOs are inclined to have better long-run performances on the stock price, while the Extra-Hot IPOs have the worst performances in the 12-month excess returns. This study can prove the mispricing theory：The IPOs will suffer in losses in the long-term because of the underpricing behaviors. This thesis also analyzes the predictive power of the flipping level of institutional investors. We divide our sample data into two different groups：(1) IPOs who have been traded in the dealer market (Emerging Stock Market, ESM) (2) IPOs who traded in the order driven market directly (without the dealer market experiences). It reveals that the predictive power is prominent only if the institutional investors have superior information about the IPOs (with dealer market experiences); In contrast to the first group, the predictive power seems to be weak when the IPOs have no dealer market experiences. In the end of this study, we are trying to construct a regression model with five indicators：the rank of the underwriters, the IPOs’ market capital, the market index during the IPO period, first-day return and the flipping level of institutional investors. We find out that in addition to the IPOs’ market capital and the rank of the underwriters, all other indicators are statistically significant to predict the 1-year excess returns of IPOs.

This work addresses the relevant errors of the anisotropic magnetoresistance sensor for inertial navigation systems. The manuscript provides resulting guidelines and solution for using the AMR sensors in a robust and appropriate way relative to the applications. New methods also are proposed to improve the performance and, reduce the power requirements and cost design of the magnetometer. The new compensation method is proposed by developing an optimization algorithm. The necessity of the sensor calibration is shown and the source of the errors and compensating model are investigated. Two novel methods of indoor calibration are proposed and examples of operating systems are presented.

We study current-induced domain wall dynamics in a thin ferromagnetic nanowire. We derive the effective equations of domain wall motion, which depend on the wire geometry and material parameters. We describe the procedure to determine these parameters by all-electric measurements of the time-dependent voltage induced by the domain wall motion. We provide an analytical expression for the time variation of this voltage. Furthermore, we show that the measurement of the proposed effects is within reach with current experimental techniques. We also show that a certain resonant time-dependent current moving a domain wall can significantly reduce the Joule heating in the wire, and thus it can lead to a novel proposal for the most energy efficient memory devices. We discuss how Gilbert damping, non-adiabatic spin transfer torque, and the presence of Dzyaloshinskii-Moriya interaction can effect this power optimization. Furthermore, we propose a new nanodot magnetic device. We derive a specific time-dependent current that is needed to switch the magnetization of the nanodot the most efficiently.

Este estudo dedica-se a investigar aspectos da percepção espacial estruturando-se como um laboratório de ações artísticas que visam criar alterações na configuração de espaços projetados – galerias, ateliers e ambientes residenciais – além de atuar como elementos estimuladores da experiência na fronteira entre corpo e arquitetura. As intervenções que executei ao longo do período de pesquisa são analisadas de forma comparativa, fazendo referência a obras de artistas e arquitetos assim como textos críticos selecionados tratando da percepção espacial sob o prisma da teoria contemporânea na arte e na arquitetura. A partir desta temática, a pesquisa organiza-se mais especificamente em torno dos conceitos de presença (corpo), materialidade (a concretude daquilo que ocupa o espaço) e vazio que são discutidos com base nas intervenções a fim de ampliar a compreensão sobre as possibilidades de interação entre arte e arquitetura. / This study aims to investigate aspects of spatial perception and it's organized as a laboratory of artistic actions thought to create alterations on the configuration of the projected and built space - especially galleries, art studios and residential environments. In addition to that, the artistic actions act as propellers for the perceptual experience that occupies the border between the body and the world. The artistic interventions produced by me during the period of the research are here analyzed in a comparative manner, making reference to the works of artists and architects as well as texts that have been selected to address the issue of spatial perception through the lenses of contemporary art and architecture. From this theme the research arrives at the more specific concepts of presence, matter and void, which are discussed based on the interventions in order to create a deeper understanding regarding the possibilities of interaction between art and architecture.

Submitted by Ricardo Fuscaldi de Figueiredo Baptista (rfuscaldi@uol.com.br) on 2011-07-16T21:36:15Z No. of bitstreams: 1 Thesis_RFuscaldi_14.07.2011_IMPRESSÃO.pdf: 2129610 bytes, checksum: 9b4f08f17097d988cfd7a3c2b340dd62 (MD5) / Rejected by Gisele Isaura Hannickel (gisele.hannickel@fgv.br), reason: Bom Dia Ricardo Fuscaldi, O arquivo PDF deve ser inserido já com a ficha catalográfica. O arquivo anexado não consta a mesma. Em caso de dúvidas estamos à disposição. Att, Gisele on 2011-07-18T11:10:02Z (GMT) / Submitted by Ricardo Fuscaldi de Figueiredo Baptista (rfuscaldi@uol.com.br) on 2011-07-18T12:42:05Z No. of bitstreams: 1 Thesis_RFuscaldi_com ficha.pdf: 2271072 bytes, checksum: b4df31e522a6a117529b915607ebdb38 (MD5) / Approved for entry into archive by Gisele Isaura Hannickel (gisele.hannickel@fgv.br) on 2011-07-18T12:45:36Z (GMT) No. of bitstreams: 1 Thesis_RFuscaldi_com ficha.pdf: 2271072 bytes, checksum: b4df31e522a6a117529b915607ebdb38 (MD5) / Approved for entry into archive by Gisele Isaura Hannickel (gisele.hannickel@fgv.br) on 2011-07-18T12:46:57Z (GMT) No. of bitstreams: 1 Thesis_RFuscaldi_com ficha.pdf: 2271072 bytes, checksum: b4df31e522a6a117529b915607ebdb38 (MD5) / Made available in DSpace on 2011-07-18T12:52:30Z (GMT). No. of bitstreams: 1 Thesis_RFuscaldi_com ficha.pdf: 2271072 bytes, checksum: b4df31e522a6a117529b915607ebdb38 (MD5) Previous issue date: 2011-06-16 / The purpose of this study is to empirically analyze the main factors that determine the first-day return and the Flipping activity in Brazilian IPOs, taking into account expected results according to national and international researches. The data base encompasses IPOs that took place between May 2004 and February 2011, summing up to 129 IPOs and approximately R$ 128 billion offering. The first-day return, which means the ‘money left on the table’, was on average 4.6% taking into consideration the issue price, while the Flipping activity totalized R$ 7.2 billion, meaning 5.6% of the offering. The first-day return was analyzed before and after the first trade, and evidences were found supporting (a) the exogenous determination of the issue price, (b) the opening price dependence of prospectus disclosure and of other variables, observable previously to the bookbuilding process, and (c) the cascade behavior of investors in the pricing after the first trade, particularly driven by the underwriter behavior. In regards to the Flipping, it was notorious depending on how much the IPO succeeded, being concentrated in and homogeneous along the first-day, despite the intense negotiation in the first minute. As a general contribution to literature, it was concluded that Information Asymmetry Theory arguments are not sufficient to explain the first-day Underpricing and the Flipping, being necessary arguments based on Behavioral Finance adapted to an intraday perspective. / Este trabalho analisa empiricamente os fatores determinantes do retorno e do ‘Flipping’ no primeiro dia de negociação em IPOs no Brasil, levando em consideração os resultados esperados pela literatura nacional e internacional. A base de dados inclui IPOs realizados entre maio de 2004 e fevereiro de 2011, totalizando 129 IPOs com ofertas primária e/ou secundária e envolvendo em torno de R$ 128 bilhões. O retorno do primeiro dia, que caracteriza o ‘dinheiro deixado na mesa’, foi em média de 4,6% com relação ao preço de emissão, enquanto o ‘Flipping’ totalizou R$ 7,2 bilhões, ou seja, 5,6% da oferta. Para o retorno, analisado antes e depois da abertura, evidenciou-se (a) a determinação exógena do preço de emissão, além da (b) influência no preço de abertura do ‘disclosure’ do prospecto e de outras variáveis observáveis antes do processo de ‘bookbuilding’, como também (c) o comportamento em ‘cascata’ dos investidores na formação de preços após a abertura, particularmente catalisada pela atuação do ‘underwriter’. Já o ‘Flipping’ foi mais proeminente conforme o sucesso do IPO, sendo concentrado no primeiro dia, mas homogêneo ao longo deste, apesar da intensa negociação no primeiro minuto. Como contribuição geral para a literatura, foi constatada a insuficiência dos argumentos baseados na Teoria da Assimetria da Informação na explicação do ‘Underpricing’ e do ‘Flipping’ no primeiro dia, sendo identificada a complementaridade de argumentos baseados em Finanças Comportamentais adaptados para o mercado intradiário