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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    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.
11

Konstruktion av radiokontrollerad klocka / Design of a radio controled watch

Gustavsson, Anders January 2012 (has links)
Uppgiften var att ta emot och avkoda en radiosignal för tidsangivelse, DCF77. Avkodaren implementerades i en FPGA-krets från ALTERA. Utvecklingen genomfördes i Quartus II-miljön med språket VHDL samt en alternativ lösning där mjuk processor användes. Både utvecklingsmiljön och språken var väl lämpade för uppgiften. Ett genomgående problem var dock radiomottagaren ofta levererade för svag signal för att kunna avkodas korrekt. Under goda mottagningsförhållanden fungerande dock den beskrivna kretsen tillfredsställande.
12

Interfacing a processor core in FPGA to an audio system

Mateos, José Ignacio January 2006 (has links)
The thesis project consists on developing an interface for a Nios II processor integrated in a board of Altera (UP3- 2C35F672C6 Cyclone II). The main goal is show how the Nios II processor can interact with the other components of the board.The Quartus II software has been used to create to vhdl code of the interfaces, compile it and download it into the board. The Nios II IDE tool is used to build the C/C++ files and download them into the processor. It has been prepared an application for the audio codec integrated in the board (Wolfson WM8731 24-bit sigma-delta audio CODEC). The line input of the audio codec receives an analog signal from a laptop, this signal is managed by the control interface of the audio codec. The converters ADCs and DACs are stereo 24-bit sigma delta and they are used with oversampling digital interpolation and decimation filters. The digital interface of the audio codec sends the digital signal to the Nios II processor and receives the data from the processor. After building the interfaces for the audio codec and the processor, it has been prepared an application in C++ language for the processor that modifies the volume of the signal. The signal come back to the audio codec and it is possible to check the results with headphones or speakers at the line output of the audio codec.
13

Protocolos de insemina??o artificial em tempo fixo e efici?ncia reprodutiva em vacas e novilhas mesti?as leiteiras / Protocols for fixed time artificial insemination and reproductive efficiency of dairy cows and heifers

Fernandez, Jorge Augusto Santos January 2010 (has links)
Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-19T18:46:32Z No. of bitstreams: 2 jorge_augusto_santos_fernandes.pdf: 239160 bytes, checksum: 9bbfbe7abcecc3d5ea2ab2a068a582ee (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-19T18:47:05Z (GMT) No. of bitstreams: 2 jorge_augusto_santos_fernandes.pdf: 239160 bytes, checksum: 9bbfbe7abcecc3d5ea2ab2a068a582ee (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-19T18:47:06Z (GMT). No. of bitstreams: 2 jorge_augusto_santos_fernandes.pdf: 239160 bytes, checksum: 9bbfbe7abcecc3d5ea2ab2a068a582ee (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2010 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Na busca de biot?cnicas economicamente vi?veis para a melhoria da efici?ncia reprodutiva na pecu?ria, objetivou-se com este trabalho avaliar diferentes protocolos de insemina??o artificial em tempo fixo (IATF) em vacas mult?paras e observar o efeito do mesmo protocolo comparando mult?paras e prim?paras observando-se a influ?ncia do horm?nio fol?culo estimulante (FSH-p) na IATF. Os tratamentos utilizados foram TControle, TFSH e TFNOV, que consistiram nos seguintes protocolos: TControle (n=35) - Dia 0, inser??o de dispositivo intravaginal de progesterona e aplica??o de 2 mg de benzoato de estradiol, intramuscular (IM); dia 8, retirada do dispositivo e aplica??o de 0,53 mg de PGF2? e 1 mg de benzoato de estradiol, IM; dia 10, IATF realizada 44 h ap?s a retirada do dispositivo; TFSH (n=36) - similar ao TControle, por?m com aplica??o no dia 8 de 15 mg de FSH-p; TFNOV (n=24)- similar ao TFSH, por?m utilizando-se novilhas. Ao final do trabalho observou-se que houve efeito (P<0,05) para peso vivo (PV) e escore de condi??o corporal (ECC) com os tratamentos. N?o houve efeito para dias p?s-parto (P>0,05). Houve diferen?a (P<0,05) entre as m?dias de peso vivo entre as vacas mult?paras (TControle e TFSH) quando comparadas as novilhas (TFNOV). N?o houve efeito (P>0,05) entre protocolos, PV e ECC no retorno ao estro, na cobertura com o touro e prenhez acumulada. N?o houve efeito (P>0,05) entre os protocolos e retorno ao estro e as taxas de prenhez na IATF, cobertura do touro e acumulada. Mesmo o uso do FSH-p n?o influenciando a efici?ncia reprodutiva, a taxa de prenhez acumulada foi satisfat?ria em ambos tratamentos. Conclui-se a IATF como interessante biot?cnica para o uso na produ??o animal; por?m, ? importante que haja um bom acompanhamento nutricional dos animais, em raz?o da rela??o entre nutri??o e reprodu??o. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT In search of biotechnical economically feasible to improve reproductive efficiency in livestock, aimed to evaluate with this work different protocols for TAI in multiparous cows and observe the effect of the same protocol when comparing multiparous and primiparous cows and observing the influence of FSH-p in TAI. The treatments consisted of: TControl (n=35)- Day 0, insertion of intravaginal progesterone device and application of 2 mg estradiol benzoate, intramuscular (IM), Day 8, removed from the device and application of 0.53 mg PGF2? and 1 mg estradiol benzoate, IM; Day 10, TAI performed 44 h after removal of the device; TFSH (n=36)- similar to TControl, but with the application on day 8 of 15 mg of FSH-p; TFNOV (n=24)- similar to TFSH but using heifers. At the end of the work observed that was an interaction (P <0.05) analyzed the effects for BW and BCS with treatments. There was no effect for days postpartum (P> 0.05). There were difference (P <0.05) between the mean body weight among the cows (and TFSH TControl) compared with heifers (TFNOV). There was no effect (P> 0.05) between protocols, body weight and body condition on return to estrus in coverage with the bull and accumulated pregnancy. There was no effect (P> 0.05) between the protocols and return to estrus and pregnancy rates of TAI, the bull and the accumulated coverage. Even the use of FSH-p does not influence the reproductive efficiency, the cumulative pregnancy rate was found satisfactory in both treatments, thus concludes the TAI as interesting biotech for use in animal production, but it is important to have a good nutritional monitoring of animals, because the relationship between nutrition and reproduction.
14

RTOS Tutorials for a Heterogeneous Class of Senior and Beginning Graduate Students

Swegert, Eric B. 14 October 2013 (has links)
No description available.
15

Projeto de um sistema para monitoramento de hardware/software on-chip baseado em computação reconfigurável / A on-chip hardware/software monitoring system based on reconfigurable computing

Ravagnani, Guilherme Stella 25 April 2007 (has links)
A tendência de integração de diversos componentes em um único chip tem proporcionado um aumento da complexidade dos sistemas computacionais. Tanto as indústrias quanto o meio acadêmico estão em busca de técnicas que possibilitem diminuir o tempo e o esforço gastos com a verificação no processo de desenvolvimento de hardware, a fim de garantir qualidade, robustez e confiabilidade a esses dispositivos. De forma a contribuir para várias aplicações envolvendo a verificação de sistemas, tais como busca por erros de projeto, avaliação de desempenho, otimização de algoritmos e extração de dados do sistema, o presente trabalho propõe um sistema de monitoramento baseado em computação reconfigurável, capaz de observar de forma não intrusiva o comportamento de um SoC (System-on-Chip) em tempo de execução. Tal sistema é composto por um módulo de monitoramento responsável por captar informações de execução de software em um processador embarcado e uma ferramenta de análise, chamada ACAD, que interpreta esses dados. Por meio da realização de experimentos, verificou-se que o sistema desenvolvido foi capaz de fornecer dados fiéis sobre a quantidade de acessos a memória ou a outros periféricos, tempos de execução de porções (ou a totalidade) do código e número de vezes que cada instrução foi executada. Esses resultados permitem traçar, de maneira precisa, o comportamento de um software executado no processador softcore Nios II, contribuindo assim para facilitar o processo de verificação em sistemas baseados em computação reconfigurável / The trend of integrating several components on a single chip has motivated an increase in the complexity of computing systems. Both industry and academy are in search of new techniques that allow time and effort spent with verification on hardware development process to be reduced to guarantee quality, robustness, reability to these devices. In order to contribute to applications in the system verification area, such as search for design errors, performance evaluation, algorithm optimization and data extraction from the system, this work proposes a monitoring system based on reconfigurable computing. This system must be able to have a run-time non-intrusive probing of a System-on-Chip behaviour. It is formed by a monitoring core responsible for capturing software execution information of a embedded processor and an analysis tool, called ACAD, that decodes the data. Empirically, the implemented system was able to provide precise data about the amount of memory and other peripherals accesses, time measurement for sections (or the entire) of the source code, and number of times each instruction was executed. These results allow to draw, in accurate way, the behaviour of a software executed on the softcore Nios II processor, collaborating to make the verification process of systems based on reconfigurable computing easier
16

Gest??o de condom??nios : a contabilidade para reduzir a assimetria informacional

Farber, Jo??o Carlos 15 August 2005 (has links)
Made available in DSpace on 2015-12-04T11:45:22Z (GMT). No. of bitstreams: 1 Joao_Carlos_Farber.pdf: 1293283 bytes, checksum: 52c6a4a68e497ea380669a62bd2588bc (MD5) Previous issue date: 2005-08-15 / The discussions about the joint ownership are not recent, thus the conflicts concerning the ownership right have been well-known since the beginning of mankind. With the passing of time, an amazing growing in the construction of buildings has been noticed, and consequently it has required the proper legal and administrative treatment. The incredible growing of the organizations engaged in the construction of buildings has demanded some transformations which have gone beyond the necessity of creating legal systems, but they have also motivated the reformulation of the condominium association administrative models and what was considered an easy task for the condominium association management has become a planned and organized administrative process, requiring more and more highly qualified professional workers to manage those associations. As a result, the accounting system has become an important tool for managing the condominium associations and it was also noticed that it can surely contribute for the soundness of the financial controls, the reliability of the data presented and the patrimonial protection of the unit owners. The main objective of this work is to closely study the quality of the economic-financial data presented by the condominium associations, emphasizing one of the segments of the Accounting Sciences that needs to be better investigated and disclosed in Brazil, that is, the Accounting System for the Condominium Associations. For this reason. this work investigates the methods adopted by the residential condominium associations in order to disclose their economic-financial data, taking into account an empiric research which was aimed at the condominium associations managers and its objective was to appraise the quality and satisfaction level of those managers regarding the economic-financial data presented and disclosed to the condominium association community. The purpose is to demonstrate the main aspects connected with the disclosure of those data, emphasizing the importance of adopting the Accounting principles and patterns as a tool for improving the financial-administrative controls and the management of those associations. Another goal of this work is to demonstrate to the managers of the residential condominium associations, the importance of the Accounting Sciences as a tool for increasing the quality of the financial-administrative controls of those organizations. / As discuss??es em torno do dom??nio comum n??o s??o recentes, os conflitos referentes ao direito de propriedade t??m sido conhecidos desde o in??cio da exist??ncia do homem. Com o passar dos tempos notou-se um incr??vel crescimento na constru????o de edif??cios, exigindo-se tratamentos legais e administrativos apropriados. O crescimento exponencial dessas institui????es desencadeou transforma????es que foram al??m da necessidade de evolu????o das mat??rias jur??dicas e levaram ?? reformula????o dos modelos de administra????o condominial, que passou de uma simples atribui????o do s??ndico para um processo de administra????o planejado e organizado, requerendo, cada vez mais, profissionais qualificados ?? frente da administra????o dessas institui????es. Neste cen??rio, a Contabilidade tornou-se um importante instrumento para a administra????o condominial e pode contribuir, com seus fundamentos, princ??pios, padr??es, crit??rios e procedimentos, para a maior solidez dos controles, confiabilidade das informa????es e prote????o do patrim??nio dos cond??minos. O objetivo geral deste trabalho ?? o de pesquisar a qualidade das informa????es econ??mico-financeiras produzidas pelas entidades condominiais e enfatizar um segmento das Ci??ncias Cont??beis a ser mais bem explorado e difundido no Brasil, ou seja, a Contabilidade de condom??nios. Para tanto, este trabalho estuda os crit??rios adotados pelos condom??nios residenciais para divulga????o de suas informa????es econ??mico-financeiras e contempla uma pesquisa emp??rica efetuada junto a s??ndicos dessas institui????es, que tem por objetivo avaliar a qualidade e o n??vel de satisfa????o quanto ??s informa????es econ??mico-financeiras produzidas e divulgadas ?? coletividade condominial. T??m-se o prop??sito de demonstrar os principais aspectos correlatos ?? evidencia????o dessas informa????es e salientar a import??ncia da ado????o dos princ??pios e padr??es da Contabilidade como instrumento para a melhoria do controle e gest??o daquelas entidades. Tamb??m h?? a pretens??o de conscientizar os administradores de condom??nios residenciais quanto ?? import??ncia da Contabilidade como ferramenta para o adequado processo de gest??o e de controle dessas organiza????es. Por fim, sugere-se a ado????o das ferramentas cont??beis nos processos gerenciais decis??rios e de controle dos condom??nios residenciais.
17

Otimização de código fonte C para o processador embarcado Nios II / Optimizing C source-code for the Nios II embedded processor

Peron, Rafael de Vasconcellos 20 December 2007 (has links)
Este projeto apresenta uma metodologia aplicada à análise da viabilidade de se otimizar código fonte C para o processador embarcado Nios II. Esta metodologia utiliza ferramentas de análise de código que traçam o perfil da aplicação, identificando suas partes críticas em relação ao tempo de execução, as quais são o gprof e o performance counter. Para otimizar o código para o processador Nios II, são utilizadas tanto instruções customizadas quanto uma ferramenta automática de aceleração de código, o compilador C2H. Como casos de estudo, foram escolhidos três algoritmos devido à sua importância no campo da robótica móvel, sendo eles o gaxpy, o EKF e o SIFT. A partir da aplicação da metodologia para se otimizar cada um dos casos, foi comparada a eficiência tanto das ferramentas de análise de código, quanto das ferramentas de otimização, bem como a validade da metodologia proposta / This project presents a methodology applied to analyze the viability of C source code optimization for the Nios II embedded processor. This methodology utilizes the gprof and performance counter source code analysis tools to profile the source code of an application, and identify its critical time consuming parts. The optimization of C source code for the Nios II processor was performed using custom instructions and an automatic source code acceleration tool, the C2H compiler. Three algorithms were chosen as study cases, based on their importance to mobile robotics. Those were the gaxpy, EKF and SIFT algorithms. After applying the presented methodology to optimize each study case, efficiency comparisons were made between the source code analysis tools, as well between the optimization tools, in order to validate the presented methodology
18

Projeto de um sistema para monitoramento de hardware/software on-chip baseado em computação reconfigurável / A on-chip hardware/software monitoring system based on reconfigurable computing

Guilherme Stella Ravagnani 25 April 2007 (has links)
A tendência de integração de diversos componentes em um único chip tem proporcionado um aumento da complexidade dos sistemas computacionais. Tanto as indústrias quanto o meio acadêmico estão em busca de técnicas que possibilitem diminuir o tempo e o esforço gastos com a verificação no processo de desenvolvimento de hardware, a fim de garantir qualidade, robustez e confiabilidade a esses dispositivos. De forma a contribuir para várias aplicações envolvendo a verificação de sistemas, tais como busca por erros de projeto, avaliação de desempenho, otimização de algoritmos e extração de dados do sistema, o presente trabalho propõe um sistema de monitoramento baseado em computação reconfigurável, capaz de observar de forma não intrusiva o comportamento de um SoC (System-on-Chip) em tempo de execução. Tal sistema é composto por um módulo de monitoramento responsável por captar informações de execução de software em um processador embarcado e uma ferramenta de análise, chamada ACAD, que interpreta esses dados. Por meio da realização de experimentos, verificou-se que o sistema desenvolvido foi capaz de fornecer dados fiéis sobre a quantidade de acessos a memória ou a outros periféricos, tempos de execução de porções (ou a totalidade) do código e número de vezes que cada instrução foi executada. Esses resultados permitem traçar, de maneira precisa, o comportamento de um software executado no processador softcore Nios II, contribuindo assim para facilitar o processo de verificação em sistemas baseados em computação reconfigurável / The trend of integrating several components on a single chip has motivated an increase in the complexity of computing systems. Both industry and academy are in search of new techniques that allow time and effort spent with verification on hardware development process to be reduced to guarantee quality, robustness, reability to these devices. In order to contribute to applications in the system verification area, such as search for design errors, performance evaluation, algorithm optimization and data extraction from the system, this work proposes a monitoring system based on reconfigurable computing. This system must be able to have a run-time non-intrusive probing of a System-on-Chip behaviour. It is formed by a monitoring core responsible for capturing software execution information of a embedded processor and an analysis tool, called ACAD, that decodes the data. Empirically, the implemented system was able to provide precise data about the amount of memory and other peripherals accesses, time measurement for sections (or the entire) of the source code, and number of times each instruction was executed. These results allow to draw, in accurate way, the behaviour of a software executed on the softcore Nios II processor, collaborating to make the verification process of systems based on reconfigurable computing easier
19

Otimização de código fonte C para o processador embarcado Nios II / Optimizing C source-code for the Nios II embedded processor

Rafael de Vasconcellos Peron 20 December 2007 (has links)
Este projeto apresenta uma metodologia aplicada à análise da viabilidade de se otimizar código fonte C para o processador embarcado Nios II. Esta metodologia utiliza ferramentas de análise de código que traçam o perfil da aplicação, identificando suas partes críticas em relação ao tempo de execução, as quais são o gprof e o performance counter. Para otimizar o código para o processador Nios II, são utilizadas tanto instruções customizadas quanto uma ferramenta automática de aceleração de código, o compilador C2H. Como casos de estudo, foram escolhidos três algoritmos devido à sua importância no campo da robótica móvel, sendo eles o gaxpy, o EKF e o SIFT. A partir da aplicação da metodologia para se otimizar cada um dos casos, foi comparada a eficiência tanto das ferramentas de análise de código, quanto das ferramentas de otimização, bem como a validade da metodologia proposta / This project presents a methodology applied to analyze the viability of C source code optimization for the Nios II embedded processor. This methodology utilizes the gprof and performance counter source code analysis tools to profile the source code of an application, and identify its critical time consuming parts. The optimization of C source code for the Nios II processor was performed using custom instructions and an automatic source code acceleration tool, the C2H compiler. Three algorithms were chosen as study cases, based on their importance to mobile robotics. Those were the gaxpy, EKF and SIFT algorithms. After applying the presented methodology to optimize each study case, efficiency comparisons were made between the source code analysis tools, as well between the optimization tools, in order to validate the presented methodology
20

Design and synthesis of a software-based transceiver PHY controller

Ranco, Annarita January 2018 (has links)
Companies developing integrated circuits are expected to enhance their products’ performance at every new release, while reducing size and power consumption. The demand for more elaborate and diverse functionality, together with a reduced time-to-market, irremediably raises costs and increases the probability of bugs. Even high-performance ASICs are not immune: the complexity of the design flow implies significant non-recurring engineering and production costs. Similar challenges affect the FPGA design flow, where the allocation of programmable logic requires considerable engineering effort. Moreover, due to the limited visibility of internal operations, isolating and back-tracing malfunctions are open challenges. Ericsson AB is exploring novel approaches to deal with this complex ecosystem.This thesis investigates the feasibility and the benefits of a flexible design approach, by developing and characterizing a Proof-of-Concept (PoC) transceiver handler for highspeed link applications. The flexibility lies in the software-based controller, exploited to handle the reset and dynamic reconfiguration of a transceiver physical layer (PHY). The objective of the software implementation is to simplify error detection and on-the-fly modification compared to a traditional HW-based controller. The firmware, running on a Nios II soft-core processor, drives the control signals while monitoring the transceiver’s status. Unexpected synchronization losses are handled by a dedicated Interrupt Service Routine.The correct HW/SW interaction has been tested through simulation, whereas the software profiling proves that the timing requirements are met (only 167µs are spent on the reset sequence). Finally, the PoC has been benchmarked against an analogous system with a traditional HW-based controller, to evaluate the drawbacks of the introduction of a soft-core processor (in terms of logic utilization and power consumption).Despite the promising engineering effort reduction, further research is required to scale up the system and move from the PoC stage towards product release. / Företag som utvecklar integrerade kretsar förväntas öka prestandan i nya produkter, och samtidigt reducera storlek samt effektförbrukning. Efterfrågan på mer komplicerad funktionalitet, tillsammans med förkortad time-to-market, orsakar oundvikligen högre kostnader och ökad sannolikhet för buggar. Även högprestererande ASICs drabbas av detta: det komplicerade designflödet resulterar i signifikanta engångskostnader för teknisk utveckling samt tillverkning. Liknande utmaningar påverkar designflödet hos FPGA:er, där allokeringen av programmerbar logik kräver påtagligt utvecklingsarbete. Eftersom insynen i interna operationer är begränsad är isolation och spårning av fel aktuella utmaningar. Ericsson AB utforskar nya tillvägagångssätt för att hantera sådana komplexa ekosystem.Det här examensarbetet undersöker genomförbarheten och fördelarna med ett flexibelt tillvägagångssätt för design, genom utveckling och karaktärisering av ett konceptbevis för en transceiver-hanterare för höghastighetslänkar. Flexibiliteten realiseras med en mjukvarubaserad kontroller som används för att hantera återställningssignaler och dynamisk rekonfigurering av en transceiver (PHY). Målet med mjukvaruimplementationen är att förenkla feldetektion samt modifikation i realtid, jämfört med en traditionell hårdvarubaserad kontroller. Mjukvaran, som körs på en Nios II soft-coreprocessor, driver styrsignaler och övervakar transceiverns status. Oväntade synkroniseringsförluster hanteras av en dedikerad avbrottshanteringsrutin. Simulationer har gjorts för att testa korrekt interaktion mellan hårdvara och mjukbara. Profilering av mjukvara visar att timingkraven uppfylls (återställningssekvensen tar endast 167 µs). Avslutningsvis har konceptbeviset jämförts med ett likvärdigt hårdvarubaserat system för att utvärdera nackdelarna med introduktionen av Nios II (vad gäller resursanvändningen och effektförbrukningen).Trots lovande resultat är den begränsade detaljnivån i konceptbeviset en tydlig begränsning. Vidare arbete måste göras för att skala upp systemet och generalisera det här nya tillvägagångssättet.

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