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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.
61

Polynomial Expansion-Based Displacement Calculation on FPGA / Polynomexpansions-baserad förskjutningsberäkning på FPGA

Ehrenstråhle, Carl January 2016 (has links)
This thesis implements a system for calculating the displacement between two consecutive video frames. The displacement is calculated using a polynomial expansion-based algorithm. A unit tested bottoms-up approach is successfully used to design and implement the system. The designed and implemented system is thoroughly elaborated upon. The chosen algorithm and its computational details are presented to provide context to the implemented system. Some of the major issues and their impact on the system are discussed.
62

Desenvolvimento de comunicação de dados sem fio para problemas de detecção de vazamentos em tubulações enterradas / Development of wireless data communication for leak detection problems in buried pipelines

Costa, Alison França Queiroz da 21 December 2018 (has links)
Submitted by Alison França Queiroz da Costa (alisonfqc@gmail.com) on 2019-01-23T16:24:02Z No. of bitstreams: 1 dissertacao_Alison_Franca.pdf: 3877983 bytes, checksum: 3ca6152176a6c8ec61d124d98c1623ee (MD5) / Approved for entry into archive by Cristina Alexandra de Godoy null (cristina@adm.feis.unesp.br) on 2019-01-28T12:25:06Z (GMT) No. of bitstreams: 1 costa_afq_me_ilha.pdf: 4321708 bytes, checksum: 13ff971f8fa75010bf9d693777aac778 (MD5) / Made available in DSpace on 2019-01-28T12:25:06Z (GMT). No. of bitstreams: 1 costa_afq_me_ilha.pdf: 4321708 bytes, checksum: 13ff971f8fa75010bf9d693777aac778 (MD5) Previous issue date: 2018-12-21 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Este trabalho desenvolveu um protótipo de um correlacionador de sinais aplicados a vazamento em tubulações de água aterrada. Para tal foi analisado o SoC Zynq, utilizando a placa Minized juntamente com um conversor analógico-digital, Pmod AD1, um módulo GPS, Pmod GPS, um clock em tempo real, Pmod RTCC e um modulo acelerômetro Pmod NAV. Nesta análise foram utilizados modelos criados no software Xilinx Vivado, baseados em Intellectual Property blocks, e o software Xilinx SDK. A partir dos modelos desenvolvidos foram realizados testes com o propósito de validar o sincronismo entre as placas. Inicialmente testou-se um modelo simples apenas utilizando a placa e o módulo Pmod AD1, sendo o teste realizado para verificar a resolução do relógio da placa Minized. Em seguida foi feito o experimento com a placa Minized e o Pmod RTCC visando o sincronismo entre as placas. Os testes de sincronismo foram finalizados utilizando-se o conjunto Minized, Pmod RTCC e Pmod GPS, que obteve bons resultados. Para a finalização da análise da correlação de sinais verificou-se a utilização do Pmod NAV para a aquisição de dados com testes em bancada, apresentando resultados experimentais satisfatórios. / This work developed a prototype of a signal correlator applied to leakage in buried water pipes. The Zynq SoC was analyzed using the Minized board together with an analog-to-digital converter, Pmod AD1, a module GPS, Pmod GPS, a real-time clock, Pmod RTCC and a Pmod NAV accelerometer module. For this analysis we used models created in the Xilinx Vivado software, based on Intellectual Property blocks, and the Xilinx SDK software. From the developed models tests were carried out in order to validate the synchronism between the boards. Initially, a simple model was tested using only the board and the module Pmod AD1, and the test was performed to verify the resolution of the Minized board's clock. Then the experiment was performed using the Minized board and the Pmod RTCC aiming the synchronism between the boards. In order to finalize the synchronization tests, we used the Minized set, Pmod RTCC and Pmod GPS, which presented good results. For the conclusion of the analysis of the correlation of signals, the use of the Pmod NAV for the data acquisition was verified and then benchmarked, presenting satisfactory experimental results. / FAPESP: 2016/24974-2 / CAPES: Código de Financiamento 001
63

Desenvolvimento de comunicação de dados sem fio para problemas de detecção de vazamentos em tubulações enterradas /

Costa, Alison França Queiroz da January 2018 (has links)
Orientador: Ailton Akira Shinoda / Resumo: Este trabalho desenvolveu um protótipo de um correlacionador de sinais aplicados a vazamento em tubulações de água aterrada. Para tal foi analisado o SoC Zynq, utilizando a placa Minized juntamente com um conversor analógico-digital, Pmod AD1, um módulo GPS, Pmod GPS, um clock em tempo real, Pmod RTCC e um modulo acelerômetro Pmod NAV. Nesta análise foram utilizados modelos criados no software Xilinx Vivado, baseados em Intellectual Property blocks, e o software Xilinx SDK. A partir dos modelos desenvolvidos foram realizados testes com o propósito de validar o sincronismo entre as placas. Inicialmente testou-se um modelo simples apenas utilizando a placa e o módulo Pmod AD1, sendo o teste realizado para verificar a resolução do relógio da placa Minized. Em seguida foi feito o experimento com a placa Minized e o Pmod RTCC visando o sincronismo entre as placas. Os testes de sincronismo foram finalizados utilizando-se o conjunto Minized, Pmod RTCC e Pmod GPS, que obteve bons resultados. Para a finalização da análise da correlação de sinais verificou-se a utilização do Pmod NAV para a aquisição de dados com testes em bancada, apresentando resultados experimentais satisfatórios. / Abstract: This work developed a prototype of a signal correlator applied to leakage in buried water pipes. The Zynq SoC was analyzed using the Minized board together with an analog-to-digital converter, Pmod AD1, a module GPS, Pmod GPS, a real-time clock, Pmod RTCC and a Pmod NAV accelerometer module. For this analysis we used models created in the Xilinx Vivado software, based on Intellectual Property blocks, and the Xilinx SDK software. From the developed models tests were carried out in order to validate the synchronism between the boards. Initially, a simple model was tested using only the board and the module Pmod AD1, and the test was performed to verify the resolution of the Minized board's clock. Then the experiment was performed using the Minized board and the Pmod RTCC aiming the synchronism between the boards. In order to finalize the synchronization tests, we used the Minized set, Pmod RTCC and Pmod GPS, which presented good results. For the conclusion of the analysis of the correlation of signals, the use of the Pmod NAV for the data acquisition was verified and then benchmarked, presenting satisfactory experimental results. / Mestre
64

Software Design Metrics for Predicting Maintainability of Service-Oriented Software

Perepletchikov, Mikhail, mikhail.perepletchikov@rmit.edu.au January 2009 (has links)
As the pace of business change increases, service-oriented (SO) solutions should facilitate easier maintainability as underlying business logic and rules change. To date, little effort has been dedicated to considering how the structural properties of coupling and cohesion may impact on the maintainability of SO software products. Moreover, due to the unique design characteristics of Service-Oriented Computing (SOC), existing Procedural and Object-Oriented (OO) software metrics are not sufficient for the accurate measurement of service-oriented design structures. This thesis makes a contribution to the field of SOC, and Software Engineering in general, by proposing and evaluating a suite of design-level coupling and cohesion metrics for predicting the maintainability of service-oriented software products early in the Software Development LifeCycle (SDLC). The proposed metrics can provide the following benefits: i) facilitate design decisions that could lead to the specification of quality SO designs that can be maintained more easily; ii) identify design problems that can potentially have a negative effect on the maintainability of existing service-oriented design structures; and iii) support more effective control of maintainability in the earlier stages of SDLC. More specifically, the following research was conducted as part of this thesis: - A formal mathematical model covering the structural and behavioural properties of service-oriented system design was specified. - Software metrics were defined in a precise, unambiguous, and formal manner using the above model. - The metrics were theoretically validated and empirically evaluated in order to determine the success of this thesis as follows: a. Theoretical validation was based on the property-based software engineering measurement framework. All the proposed metrics were deemed as theoretically valid. b. Empirical evaluation employed a controlled experimental study involving ten participants who performed a range of maintenance tasks on two SO systems developed (and measured using the proposed metrics) specifically for this study. The majority of the experimental outcomes compared favourably with our expectations and hypotheses. More specifically, the results indicated that most of the proposed metrics can be used to predict the maintainability of service-oriented software products early in the SDLC, thereby providing evidence for the validity and potential usefulness of the derived metrics. Nevertheless, a broader range of industrial scale experiments and analyses are required to fully demonstrate the practical applicability of the metrics. This has been left to future work.
65

Anhöriggruppens påverkan på anhörigas känsla av sammanhang

Axlund, Anna, Wennberg, Marie January 2008 (has links)
<p>Abstrakt</p><p>När någon i familjen drabbas av sjukdom, står oftast de närmast anhöriga för den vårdande omsorgen, vilket kan vara påfrestande för hälsan. Det senaste decenniet har det offentliga stödet till anhöriga uppmärksammats i Sverige, vilket har inneburit en satsning på 300 miljoner kronor, Anhörig 300. Vars avsikt var att stödja och underlätta de anhörigas livssituation. Då kan en stödjande verksamhet som anhöriggrupp, vara ett viktigt komplement för reflektion och utveckling med andra. Tillvaron är full av påfrestningar, vad är det som gör att vissa klarar av dessa, medan andra inte gör det? Antonovsky (1991) svar på detta är känslan av sammanhang (KASAM). Syftet med studie var att studera om och i så fall hur interventionen i en anhöriggrupp kan påverka de anhörigas KASAM. Arbetet inleddes med en genomgång av både litteratur och forskning, för att öka kunskap inom problemområdet. Datainsamlingsmetoden som användes var ett ”Livsfrågeformulär”. Urvalet bestod av anhöriga till person över 20 år som drabbats av sjukdom och/eller funktionshinder. Studien genomfördes som en för- och eftermätning av interventionen i en anhöriggrupp. Resultatet visade att KASAM förändrades, men inte endast i positiv riktning, vilket var författarnas hypotes. Detta behöver inte ses som något negativt enligt Antonovsky (1991), utan det är mycket vanligt att en utveckling föregås av ett tillstånd av obalans, vilket kan påverka KASAM tillfälligt. Vad som orsakade detta kan vara svårt att fastställa. De slutsatser som gjordes var att trots fördelar med stöd i grupp, så kan det vara svårt att påvisa att det var just det stödet som påverkade KASAM, däremot kan det ses som en resurs, enligt forskning, i omsorgsarbetet för de anhöriga.</p>
66

Anhöriggruppens påverkan på anhörigas känsla av sammanhang

Axlund, Anna, Wennberg, Marie January 2008 (has links)
Abstrakt När någon i familjen drabbas av sjukdom, står oftast de närmast anhöriga för den vårdande omsorgen, vilket kan vara påfrestande för hälsan. Det senaste decenniet har det offentliga stödet till anhöriga uppmärksammats i Sverige, vilket har inneburit en satsning på 300 miljoner kronor, Anhörig 300. Vars avsikt var att stödja och underlätta de anhörigas livssituation. Då kan en stödjande verksamhet som anhöriggrupp, vara ett viktigt komplement för reflektion och utveckling med andra. Tillvaron är full av påfrestningar, vad är det som gör att vissa klarar av dessa, medan andra inte gör det? Antonovsky (1991) svar på detta är känslan av sammanhang (KASAM). Syftet med studie var att studera om och i så fall hur interventionen i en anhöriggrupp kan påverka de anhörigas KASAM. Arbetet inleddes med en genomgång av både litteratur och forskning, för att öka kunskap inom problemområdet. Datainsamlingsmetoden som användes var ett ”Livsfrågeformulär”. Urvalet bestod av anhöriga till person över 20 år som drabbats av sjukdom och/eller funktionshinder. Studien genomfördes som en för- och eftermätning av interventionen i en anhöriggrupp. Resultatet visade att KASAM förändrades, men inte endast i positiv riktning, vilket var författarnas hypotes. Detta behöver inte ses som något negativt enligt Antonovsky (1991), utan det är mycket vanligt att en utveckling föregås av ett tillstånd av obalans, vilket kan påverka KASAM tillfälligt. Vad som orsakade detta kan vara svårt att fastställa. De slutsatser som gjordes var att trots fördelar med stöd i grupp, så kan det vara svårt att påvisa att det var just det stödet som påverkade KASAM, däremot kan det ses som en resurs, enligt forskning, i omsorgsarbetet för de anhöriga.
67

Exploration architecturale pour la conception d'un système sur puce de vision robotique, adéquation algorithme-architecture d'un système embarqué temps-réel

Lefebvre, Thomas 24 September 2012 (has links) (PDF)
La problématique de cette thèse se tient à l'interface des domaines scientifiques de l'adéquation algorithme architecture, des systèmes de vision bio-inspirée en robotique mobile et du traitement d'images.Le but est de rendre un robot autonome dans son processus de perception visuelle, en intégrant au sein du robot cette tâche cognitive habituellement déportée sur un serveur de calcul distant.Pour atteindre cet objectif, l'approche de conception employée suit un processus d'adéquation algorithme architecture, où les différentes étapes de traitement d'images sont analysées minutieusement.Les traitements d'image sont modifiés et déployés sur une architecture embarquée de façon à respecter des contraintes d'exécution temps-réel imposées par le contexte robotique.La robotique mobile est un sujet de recherche académique qui s'appuie sur des approches bio-mimétiques.La vision artificielle étudiée dans notre contexte emploie une approche bio-inspirée multi-résolution, basée sur l'extraction et la mise en forme de zones caractéristiques de l'image.Du fait de la complexité de ces traitements et des nombreuses contraintes liées à l'autonomie du robot, le déploiement de ce système de vision nécessite une démarche rigoureuse et complète d'exploration architecturale logicielle et matérielle.Ce processus d'exploration de l'espace de conception est présenté dans cette thèse.Les résultats de cette exploration ont mené à la conception d'une architecture principalement composée d'accélérateurs matériels de traitements (IP) paramétrables et modulaires, qui sera déployée sur un circuit reconfigurable de type FPGA.Ces IP et le fonctionnement interne de chacun d'entre eux sont décrits dans le document.L'impact des paramètres architecturaux sur l'utilisation des ressources matérielles est étudié pour les traitements principaux.Le déploiement de la partie logicielle restante est présenté pour plusieurs plate-formes FPGA potentielles.Les performances obtenues pour cette solution architecturale sont enfin présentées.Ces résultats nous permettent aujourd'hui de conclure que la solution proposée permet d'embarquer le système de vision dans des robots mobiles en respectant les contraintes temps-réel imposées.
68

Välbefinnande och Känsla av sammanhang bland flickor i skolvardagen (ÅR 6) / Wellbeing and sense of coherence among girls in the school setting (6th grade)

Thorén, Anna January 2011 (has links)
I ”Skolbarns hälsovanor” har sedan 1985 frågan ”Vad tycker du om skolan nu för tiden?” funnits med. Skoltrivseln minskar med åldern och till skillnad från många andra frågor skiljer sig pojkars och flickors uppfattning i denna fråga mest i den yngsta åldersgruppen, då flickorna i högre utsträckning uppger att de trivs mycket bra i skolan (Svenska barns hälsovanor, FHI 2005). I den här studien undersöks hur åtta 12-åriga svenska skolflickor i en västsvensk småstad upplever sin skolvardag. Min metod har varit att fastställa deras KASAM-värde genom en enkät (Margalit &amp; Efrati, 1996) baserad på Antonovskys frågeformulär för att mäta Känsla Av Sammanhang (Antonovsky, 1987)och sedan intervjua dem enskilt om trivsel, flow och beröm i skolan. De har fått prata fritt omkring dessa teman och beskriva sina känslor för skolan. Genom att sammanställa delarna skildras i resultatet hur flickornas välbefinnande i skolan ser ut. / The Swedish national survey "School children's health habits" have since 1985 asked children "What do you think about school these days?". School satisfaction decreases with age and unlike many other questions there are different views from boys 'and girls on this matter. Most obvious in the youngest age group, where girls more often say they feel very well at school (Swedish children's health habits, FHI 2005). In this study eight 12-year-old Swedish school girls from a small town in the west of Sweden describe their feelings about school. My method is to determine their SOC-value through a survey (Margalit &amp; Efrati, 1996) based on Antonovsky's questionnaire for measuring Sense of Coherence (Antonovsky, 1987) and then interview them individually on the subjects of well-being, flow, and praise in school. They may talk freely about these topics and describe their feelings about different aspects of school. By assembling the different parts in the result an illustration of girls' well-being in the school setting is formed.
69

Den skapande bildens betydelse för hälsan hos personer med depressions- och ångestsyndrom

Thunell, Boel January 2012 (has links)
The main objective of this study has been to explore how art therapists experience the visual art´s that can be used in the promotion of health among people with depression - and anxiety disorders. The concept of SOC- sense of coherence has been a central term and a link between imaging and SOC were identified in the study. The underlying method in the study was a qualitative form, where semi-structured interviews were used. Through a strategic- sample five female art therapist were contacted, who all came to participate in the study. The study is essentially based on hermeneutical method and the analysis of interview material has been analyst by using thematic analysis. The results indicate that the therapists experiences shows that  visual art can be a support for people with depression- and anxiety disorders. The SOC- concept made its mark in the result and it came to show that the visual art´s may be a support for people with depression- and anxiety disorders. Visual art can help people with depression- and anxiety disorders to get more understanding and tools to manage their state according to the therapists.
70

Design of Bus-based Communication Architectures for Systems with Throughput Constraints

Liao, Ren-Zheng 01 August 2005 (has links)
Modern system-on-chip consists of an increasing number of highly complex modules. The quality of the interfaces and throughput of communication connections between these components are crucial to the performance of the system, since communication is often the main bottleneck in modern application domains like multimedia. In this thesis, a bus-based communication architecture synthesis approach is proposed. Given the result of hardware/software partitioning and pipelined scheduling, the proposed approach constructs a communication topology which meets the constraints. We begin with the minimum number of AHB and an APB, each time we add an AHB and do some transformation such as merging or setting local buses. Our goal is to find the bus architecture which has minimum area. We use integer programming to construct a bus architecture each time, until the bus architecture with the minimum area are found. By this approach, we can save a lot of time required to design the communication architecture manually.

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