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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.
311

Universal design : designing products that all individuals can use

Talley, Austin Bates 15 October 2013 (has links)
In today's world there is a need for products and services that are accessible to all individuals. Universal Design is the concept that products and environments should be usable by all people, to the greatest extent possible, without the need for adaptation or specialization. There is a growing need for such products. However, many products are not accessible to all potential customers, arguably due to a lack of experience, design tools, and engineering methods for creating universally designed products. This research compares paired products to determine the differences between "Universal Design (UD)" and "Standard" Products. For each pair of products, a functional model and activity diagram were developed and analyzed. For each product pair, the identified differences in the products were recorded in a Universal Design differences database. Through systematic analysis of the Universal Design differences database and other research in Universal Design, a set of three Handheld Universal Design Tools was created. The toolset consists of the Handheld Universal Design Checklist, The Handheld Universal Design Guidelines, and the Handheld Universal Design Matrix. These three tools are designed to be used in the concept generation phase of product design or redesign. The Handheld Universal Design Tools were evaluated using a human subjects experiment. Control and test groups were asked to generate concepts for redesigning a product. The metrics of quality, universality, laterality, senior usability and inclusivity were used to evaluate the design concepts. The results of the study suggest that Handheld Universal Design Tools assist engineers in generating design concepts appropriate for Universally Designed products. As a part of the research, Universal Design was presented to first year mechanical engineering students with pre- and post- surveys on the students' perceptions of engineering. Subsequent analysis of the surveys indicated that exposure to Universal Design affects students' perceptions of engineers' overall role in society and their capacity to help others. The Handheld Universal Design Checklist, Guidelines and Matrix represent an initial step to provide engineers with tools to create Universally Designed products. / text
312

StickyDesignSpace: Incorporating the Attachment Framework into Product Design Practice

Chu, Wanjun January 2015 (has links)
Creating and encouraging longer-lasting relationship between designed products and its users is one of the goals that researchers in Sustainable HCI trying to achieve. The attachment framework is proposed by previous study that aims to provide knowledge and insight for designers to create longer-lasting relationship between products and users. As arguments have been made that there is a gap between Sustainable HCI theory and design practice. The attachment framework is one of the well established theoretical frameworks that need effective knowledge transformation from theory to practice. The aim of the study is to design, develop and evaluate a web-based interactive tool -- StickyDesignSpace, which helps product designers to embed the attachment framework into their design background research process. The study employs a research through design approach which focuses on the creation of innovative artifacts to solve practical problems. A web-based tool was designed and developed through the grounding, ideation and iteration process. And a high-fidelity prototype was evaluated by four design participants. The results indicated that the web tool StickyDesignSpace fostered the participated designers' attachment-related thinking by providing attachment design principles and generic design properties in a two dimensional space for organizing design background research data. Furthermore, the tool promoted the participated designers' attachment design knowledge transformation from background research process to design ideation process. According to participants' design objectives and background research goals, the tool also showed flexibility to be applied in other design process such as design idea formation and design evaluation process. The study shed light on the possibility of creating interactive tools to communicate sustainable HCI design frameworks to design practitioners, and offer the insights of how design practitioners integrate the attachment framework into their design thinking and process.
313

How do principals support implementation of an inclusive school reform?

Epp, Brent A. 17 March 2015 (has links)
This qualitative study examines how principals support the implementation of the Three-Block Model of Universal Design for Learning (Katz, 2012a), a framework for inclusive school reform. The ways that principals can support inclusive practice may include the way they use systems and structures that fall under their control (Katz, 2012a). Instructional leadership also plays a crucial part in implementing inclusive school reform (Leithwood & Riehl, 2005). Data were collected through semi-structured interviews with five Manitoba principals involved in implementation of the Three-Block Model of UDL. Principals were asked about leadership and how they manage systems and structures under their control. Recommendations for practice are made, including the need for the school to be organized to support inclusive practice, for principals to make developing people a key task, and for principals to be highly involved in classroom instruction within the school.
314

Designing an outdoor environment for older adults

Saraswathi, Y. R. January 1997 (has links)
The goal of this project is to create an outdoor environment that responds to the social, physical and emotional needs of older adults.The main objective of this project is to provide quality outdoor spaces associated with a housing facility. To meet this objective, the project stresses three major objectives: (1) to integrate the older adults' housing facility with the neighborhood in order to eliminate segregation and loneliness; (2) to determine the aspects of nature that are beneficial to the older adults' physical and mental health; and (3) to create an appropriate outdoor environment that will increase social contact and enhance active and passive recreational spaces to improve physical and emotional health.The literature section of this project focuses on setting up criteria for the questionnaire. The Literature review also helps to identify guidelines for design and design principles. Criteria for the final conceptual design was set using the data from the survey and the case studies. Finally a conceptual design was created to meet the objectives. / Department of Landscape Architecture
315

Reducering av monterings- och installationstid genom implementering av DFA / Reduction of assembly and installation time by implementing Design-for-Assembly

Svensson, Daniel, Edin, Ramic January 2018 (has links)
Utveckling av produkter enligt DFA kan öka effektiviteten i monteringsprocessen med avseende på tid, tillgänglighet, synlighet och kostnad. Syftet med arbetet är att undersöka möjligheterna i att utveckla en produkt baserat på åsikter och erfarenheter. Två delmål är etablerade till projektet där det första är att kartlägga monterings- och installationsprocesser. Andra delmålet är att generera förbättringsförslag för korgnodskonstruktionen. Via fallstudier av monterings- och installationsprocesser samt tidsanalyser identifierades tre problemområden till vilka samtliga ett förbättringskoncept genererats. Det genomfördes ytterligare en tidsanalys på förbättringsförslaget för att jämföra med dagens korgnodskonstruktion. Resultatet visar en minskning av den totala monteringstiden och för den totala installationstiden. Vidare visar resultatet en effektivitetsökning för förmontering och installation, däremot en minskad effektivitet för montering.
316

Reuse-based test planning for core-based systems-on-chip / Planejamento de teste para sistemas de hardware integrados baseados em componentes virtuais

Cota, Erika Fernandes January 2003 (has links)
O projeto de sistemas eletrônicos atuais segue o paradigma do reuso de componentes de hardware. Este paradigma reduz a complexidade do projeto de um chip, mas cria novos desafios para o projetista do sistema em relação ao teste do produto final. O acesso aos núcleos profundamente embutidos no sistema, a integração dos diversos métodos de teste e a otimização dos diversos fatores de custo do sistema são alguns dos problemas que precisam ser resolvidos durante o planejamento do teste de produção do novo circuito. Neste contexto, esta tese propõe duas abordagens para o planejamento de teste de sistemas integrados. As abordagens propostas têm como principal objetivo a redução dos custos de teste através do reuso dos recursos de hardware disponíveis no sistema e da integração do planejamento de teste no fluxo de projeto do circuito. A primeira abordagem considera os sistemas cujos componentes se comunicam através de conexões dedicadas ou barramentos funcionais. O método proposto consiste na definição de um mecanismo de acesso aos componentes do circuito e de um algoritmo para exploração do espaço de projeto. O mecanismo de acesso prevê o reuso das conexões funcionais, o uso de barramentos de teste locais, núcleos transparentes e outros modos de passagem do sinal de teste. O algoritmo de escalonamento de teste é definido juntamente com o mecanismo de acesso, de forma que diferentes combinações de custos sejam exploradas. Além disso, restrições de consumo de potência do sistema podem ser consideradas durante o escalonamento dos testes. Os resultados experimentais apresentados para este método mostram claramente a variedade de soluções que podem ser exploradas e a efi- ciência desta abordagem na otimização do teste de um sistema complexo. A segunda abordagem de planejamento de teste propõe o reuso de redes em-chip como mecanismo de acesso aos componentes dos sistemas construídos sobre esta plataforma de comunicação. Um algoritmo de escalonamento de teste que considera as restrições de potência da aplicação é apresentado e a estratégia de teste é avaliada para diferentes configurações do sistema. Os resultados experimentais mostram que a capacidade de paralelização da rede em-chip pode ser explorada para reduzir o tempo de teste do sistema, enquanto os custos de área e pinos de teste são drasticamente minimizados. Neste manuscrito, os principais problemas relacionados ao teste dos sistemas integrados baseados em componentes virtuais são identificados e as soluções já apresentadas na literatura são discutidas. Em seguida, os problemas tratados por este traballho são listados e as abordagens propostas são detalhadas. Ambas as técnicas são validadas através dos sistemas disponíveis no ITC’02 SoC Test Benchmarks. As técnicas propostas são ainda comparadas com outras abordagens de teste apresentadas recentemente. Esta comparação confirma a eficácia dos métodos desenvolvidos nesta tese. / Electronic applications are currently developed under the reuse-based paradigm. This design methodology presents several advantages for the reduction of the design complexity, but brings new challenges for the test of the final circuit. The access to embedded cores, the integration of several test methods, and the optimization of the several cost factors are just a few of the several problems that need to be tackled during test planning. Within this context, this thesis proposes two test planning approaches that aim at reducing the test costs of a core-based system by means of hardware reuse and integration of the test planning into the design flow. The first approach considers systems whose cores are connected directly or through a functional bus. The test planning method consists of a comprehensive model that includes the definition of a multi-mode access mechanism inside the chip and a search algorithm for the exploration of the design space. The access mechanism model considers the reuse of functional connections as well as partial test buses, cores transparency, and other bypass modes. The test schedule is defined in conjunction with the access mechanism so that good trade-offs among the costs of pins, area, and test time can be sought. Furthermore, system power constraints are also considered. This expansion of concerns makes it possible an efficient, yet fine-grained search, in the huge design space of a reuse-based environment. Experimental results clearly show the variety of trade-offs that can be explored using the proposed model, and its effectiveness on optimizing the system test plan. Networks-on-chip are likely to become the main communication platform of systemson- chip. Thus, the second approach presented in this work proposes the reuse of the on-chip network for the test of the cores embedded into the systems that use this communication platform. A power-aware test scheduling algorithm aiming at exploiting the network characteristics to minimize the system test time is presented. The reuse strategy is evaluated considering a number of system configurations, such as different positions of the cores in the network, power consumption constraints and number of interfaces with the tester. Experimental results show that the parallelization capability of the network can be exploited to reduce the system test time, whereas area and pin overhead are strongly minimized. In this manuscript, the main problems of the test of core-based systems are firstly identified and the current solutions are discussed. The problems being tackled by this thesis are then listed and the test planning approaches are detailed. Both test planning techniques are validated for the recently released ITC’02 SoC Test Benchmarks, and further compared to other test planning methods of the literature. This comparison confirms the efficiency of the proposed methods.
317

Techniques de Test Pour la Détection de Chevaux de Troie Matériels en Circuits Intégrés de Systèmes Sécurisés / Testing Techniques for Detection of Hardware Trojans in Integrated Circuits of Trusted Systems

Acunha guimarães, Leonel 01 December 2017 (has links)
La mondialisation et la déverticalisation des métiers du semi-conducteur a mené cette industrie à sous-traiter certaines étapes de conception et souvent la totalité de la fabrication. Au cours de ces étapes, les circuits intégrés (CIs) sont vulnérables à des altérations malignes : les chevaux de Troie matériels (HTs). Dans les applications sécuritaires, il est important de garantir que les circuits intégrés utilisés ne soient pas altérés par de tels dispositifs. Afin d'offrir un niveau de confiance élevé dans ces circuits, il est nécessaire de développer de nouvelles techniques de test pour détecter les HTs, aussi légers et furtifs soient-ils. Cette thèse étudie les menaces et propose deux approches originales de test post-fabrication pour détecter des HTs implantés après synthèse. La première technique exploite des capteurs de courant incorporés au substrat (BBICS), originalement conçus pour identifier les défauts transitoires dans les CIs. Dans notre cas, ils fournissent une signature numérique obtenue par analyse statistique permettant de détecter tout éventuel HT, même au niveau dopant. La deuxième proposition est une méthode non intrusive pour détecter les HTs dans les circuits asynchrones. Cette technique utilise la plateforme de test du circuit et ne requiert aucun matériel supplémentaire. Elle permet la détection de HTs dont la surface est inférieure à 1% de celle du circuit. Les méthodes et les techniques-,- mises au point dans cette thèse-,- contribuent donc à réduire la vulnérabilité des CIs aux HTs soit par adjonction d'un capteur (BBICS), soit en exploitant les mécanismes de test s'il s'agit de circuits asynchrones. / The world globalization has led the semiconductor industry to outsource design and fabrication phases, making integrated circuits (ICs) potentially more vulnerable to malicious modifications at design or fabrication time: the hardware Trojans (HTs). New efficient testing techniques are thus required to disclose potential slight and stealth HTs, and to ensure trusted devices. This thesis studies possible threats and proposes two new post-silicon testing techniques able to detect HTs implanted after the generation of the IC netlist. The first proposed technique exploits bulk built-in current sensors (BBICS) -- which are originally designed to identify transient faults in ICs -- by using them as testing mechanisms that provide statistically-comparable digital signatures of the devices under test. With only 16 IC samples, the testing technique can detect dopant-level Trojans of zero-area overhead. The second proposition is a non-intrusive technique for detection of gate-level HTs in asynchronous circuits. With this technique, neither additional hardware nor alterations on the original test set-up are required to detect Trojans smaller than 1% of the original circuit. The studies and techniques devised in this thesis contribute to reduce the IC vulnerability to HT, reusing testing mechanisms and keeping security features of original devices.
318

Optimization Techniques for Performance and Power Dissipation in Test and Validation

Jayaraman, Dheepakkumaran 01 May 2012 (has links)
The high cost of chip testing makes testability an important aspect of any chip design. Two important testability considerations are addressed namely, the power consumption and test quality. The power consumption during shift is reduced by efficiently adding control logic to the design. Test quality is studied by determining the sensitization characteristics of a path to be tested. The path delay fault models have been used for the purpose of studying this problem. Another important aspect in chip design is performance validation, which is increasingly perceived as the major bottleneck in integrated circuit design. Given the synthesizable HDL code, the proposed technique will efficiently identify infeasible paths, subsequently, it determines the worst case execution time (WCET) in the HDL code.
319

Lived experiences of secondary instrumental music teachers who teach students with learning disabilities

Vinciguerra, Salvatore 07 July 2016 (has links)
Very little research is published on teaching music to students with learning disabilities. Nevertheless, federal law mandates that instruction of such students take place in all public schools. The purpose of this study was to investigate the lived experiences of four secondary instrumental music teachers who teach five students with learning disabilities. This study looked at the interactions between teachers and these students and examined how their experiences informed teaching practices. Phenomenological in design, this study included data collected from journals, as well as interviews, relevant artifacts, and direct observations of the teachers. My goal was to provide data for music teacher training programs and for these teachers to help each class of their students educate students with learning disabilities. Results showed that the teachers were aware of the needs of students with learning disabilities. Teachers became frustrated with occurrences of undisclosed diagnoses of such students and those with Attention-Deficit/Hyperactivity Disorder, and that they had received little guidance from Individualized Education Programs or other documents designed to inform teachers about accommodations for those with disabilities. Successful accommodations depended on the experience or training of the teachers and the severity of the disability, as well as how much the students had previously learned to cope with their learning disabilities. Students were rarely aware of specific interventions or adaptations teachers had made to accommodate a disability. Instructors employed general teaching techniques that aligned with Universal Design for Learning (UDL). Pedagogical information given in this study would benefit music education and add more data to the sparse amount of work being done on teaching instrumental music to students with learning disabilities.
320

O design com segurança e conforto no projeto de camas para a terceira idade

Pereira, Gabriela Fonseca January 2012 (has links)
A população idosa está em crescimento no Brasil segundo dados do último Censo Demográfico do Instituto Brasileiro de Geografia e Estatística - IBGE. Com esta perspectiva é importante atentar-se para o fato de que durante o processo de envelhecimento ocorrem diversas mudanças físicas e psíquicas que influenciam a pessoa no uso dos espaços e dos produtos. Dentre esses produtos, a cama é extremamente necessária durante toda a vida e a sua utilização faz parte da rotina diária, sendo alta a ocorrência de quedas de idosos no uso deste produto. Embora as lesões e as quedas na utilização das camas não estejam diretamente associadas à terceira idade, neste período da vida, elas podem representar um problema de saúde mais grave. A intenção desta dissertação é a proposição de diretrizes projetuais para que as camas sejam seguras e confortáveis para os idosos. Para alcançar este objetivo e compreender as necessidades dos idosos desenvolveramse duas etapas distintas: a fundamentação teórica e a pesquisa de campo. Na fundamentação teórica, foram levantados os assuntos relevantes a oito temas principais: idosos, mercado de camas e colchões, segurança, conforto, desenho universal, ergonomia, antropometria e usabilidade, com a finalidade de apontar direcionamentos de projeto indicados pelos autores. A pesquisa de campo, realizada em uma instituição de longa permanência e dezenove residências, totalizando cinquenta idosos, contou com o método de estudo de casos múltiplos através da aplicação de entrevistas semi-estruturadas entre idosos e profissionais. A aplicação deste método auxiliou a elaboração das diretrizes, pois, além de identificar as dificuldades encontradas pelos idosos na utilização da cama, permitiu a identificação dos elementos que são mais importantes e os que necessitam de melhoria na opinião dos usuários. As entrevistas com os profissionais que lidam com idosos diariamente também auxiliou neste processo. Assim, a partir da sistematização dos dados obtidos na fundamentação teórica e na pesquisa de campo, são apresentadas diretrizes projetuais que visam a segurança e ao conforto do idoso, que possui a sua autonomia preservada, na utilização da cama. / The old population is growing in Brazil according to last data from Demographic Census of Instituto Brasileiro de Geografia e Estatística - IBGE. Based on this it is important to pay attention to the fact that during the aging process many physical and psychic changes happen which influence the person in the usage of spaces and products. Among these products the bed is extremely necessary during the whole life and its use is part of the daily routine, being high the incidence of falls of old people using this product. And although injuries and falls using beds are not directly related to the old population, during this period they can represent a grave health problem. The objective of this research is to propose project guidelines aiming that beds become safer and more comfortable for the old people. In order to reach this objective and understand the necessities of the old people two specific stages were established: the theoretical base and the field survey. In the theoretical base were raised issues related to eight main subjects: old people, the market of beds and mattresses, safety, comfort, universal design, ergonomics, anthropometry and usability, aiming to raise project guidelines indicated by the authors. The field survey, carried out in a long term stay institution and nineteen homes, totalizing fifty old people, counted with the multiple cases study method through the application of semi-structures interviews to old people and professionals. The application of this method helped the creation of the guidelines, since, besides identifying the difficulties found by the old people using the bed, allowed the identification of the most important elements and the ones which need enhancements in the users’ opinions. The interviews with the professionals which deal daily with old people also helped in this process. Because of this, based on the systematization of the data obtained in the theoretical base and in the field survey, project guidelines are presented aiming the safety and the comfort of the old people, who keep their autonomy preserved using the bed.

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