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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.
1

Effects of mental model quality on collaborative system performance

Wilkison, Bart D. 31 March 2008 (has links)
As the tasks humans perform become more complicated and the technology manufactured to support those tasks becomes more adaptive, the relationship between humans and automation transforms into a collaborative system. In this system each member depends on the input of the other to reach a predetermined goal beneficial to both parties. Studying the human/automation dynamic as a social team provides a new set of variables affecting performance previously unstudied by automation researchers. One such variable is the shared mental model (Mathieu, Heffner, Goodwin, Salas, & Cannon-Bowers, 2000). This study examined the relationship between mental model quality and collaborative system performance within the domain of a navigation task. Participants navigated through a simulated city with the help of a navigational system performing at two levels of accuracy; 70% and 100%. Participants with robust mental models of the task environment identified automation errors when they occurred and optimally navigated to destinations. Conversely, users with vague mental models were less likely to identify automation errors, and chose inefficient routes to destinations. Thus, mental model quality proved to be an efficient predictor of navigation performance. Additionally, participants with no mental model performed as well as participants with vague mental models. The difference in performance was the number and type of errors committed. This research is important as it supports previous assertions that humans and automated systems can work as teammates and perform teamwork (Nass, Fog, & Moon, 2000). Thus, other variables found to impact human/human team performance might also affect human/automation team performance just as this study explored the effects of a primarily human/human team performance variable, the mental model. Additionally, this research suggests that a training program creating a weak, inaccurate, or incomplete mental model in the user is equivalent to no training program in terms of performance. Finally, through a qualitative model, this study proposes mental model quality affects the constructs of user self confidence and trust in automation. These two constructs are thought to ultimately determine automation usage (Lee & Moray, 1994). To validate the model a follow on study is proposed to measure automation usage as mental model quality changes.
2

Usability Evaluation of Web Office Applications in Collaborative Student Writing

Khan, Muhammad Afsar, Hassan, Sher January 2009 (has links)
Usability evaluation of collaborative writing system for education usage is very essential to improve its functionality to make it effective, efficient and satisfactory for future use. In this thesis, the usability of web office (ThinkFree doc) i.e. one of collaborative tool was tested using mix research approach. Usability evaluation was done in step by step process, where usability test was conducted using think aloud protocol and observation during testing was noted down. Test results were then analyzed and questionnaire was designed for quantitative survey. Questionnaires were then distributed among those students who have been using Thinkfree doc for educational collaborative work. Interviews were conducted with all selected participants individually for results validations. During usability evaluation process positive and negative effects regarding software‟s usage were noted down. The result revealed that overall system‟s response is very slow. The software needs to improve its processing speed to make it more efficient for future use. The system also needs to improve overall functionality (e.g. collaborative work, synchronization, uploading and track changes etc) to provide accurate and complete results according users‟ requirements. / First Author: M. Afsar Khan. Mohallah madani masjid nawan killi village & P.O Gujar Garhi District Mardan NWFP Pakistan, Second Author: Sher Hassan. Timergara Dir Lower NWFP Pakisan
3

Surgnet: An Integrated Surgical Data Transmission System over Collaborative Networks

Natarajan, Sriram 01 January 2009 (has links) (PDF)
Telesurgery relies on fast and reliable data transmission between the surgeon and tele-operator side over lossy and delay constrained networks. Medical data involves audio, video, ECG and Force Feedback data. When these media streams are transmitted through best effort networks, the temporal information gets affected due to network constraints. Major network degradation is due to the Force Feedback device with rendering rate of 1 KHz, hence data is generated every millisecond. In our proposal we concentrate on improving the synchronization of force feedback device on varying networking conditions. Force feedback data is generated by operating a source (surgical) device which controls the movement of remote device. It has a great potential in improving telemedicine facilities, when included with the support of different multimedia services. The channel imposes delay and packet loss constraints for such devices which require unique solutions, unlike audio or video media, due to its high rendering rate. Current research supports Force Feedback in fiber optic communication, packet switched networks. However, such schemes are not feasible in supporting surgical telepresence system. While efforts are made to support force feedback media in wireless medium, few works have addressed delay synchronization and loss of data. There exists no previous work which has attempted to provide an efficient integrated solution where video and force feedback information have been supported by the same network. This thesis focuses in providing an integrated architecture that supports the force feedback data over a collaborative network and improves the data synchronization and packet loss prediction in the remote side over a varying network link. The goal will be to evaluate the support of such data types. We have implemented a Linear Packet Predictor Algorithm which predicts the missing packet value. Data generated from the source device are sent as UDP packets. UDP transmission is unreliable and hence we use an RTP over UDP to make it reliable. Each packet will have the current position of the device and force applied. We use a Microsoft Sidewinder Force Feedback joystick. The handle of the joystick is located at the center of the base. So we record the position of the device on both positive and negative axis moving in a two dimensional space. This device provides rotational movement and hence drastic change in position occurs within milliseconds. Once the packet arrives at the receiver side, the control unit checks for the sequence number of the packet. If continuity is missing then, the control unit passes the packet to the predictor algorithm which predicts the packet else it directly updates the packet to the Virtual Time Rendering Algorithm Another major issue is the delay jitter. On the source (server) side the intra time difference between two packets will be 1msec. But due to varying delay in the network the data packets arrive at the receiver with fluctuating intra time difference. In order to counter the delay jitter effect, we implement the Virtual Time Rendering algorithm which reads the time stamp value at which the packet was generated at the source and modifies the update time at the receiver side. In our work we do not control another device on the remote side, rather an applet which was developed using a Virtual Reality Markup Language in Matlab. Another challenge which is imposed when other multimedia is introduced with force feedback is the intra media synchronization. Real time video is captured from the applet side and given as feedback to the server side to improve the interactivity of the application. At every instant in time, different multimedia data produce data to be updated at the remote end. Since all the information are inter dependent with other media in time, efficient intra media synchronization is required. This thesis also focuses in providing an architecture which not only supports force feedback data but have a multiplexed model which allows an efficient transmission of all surgical information in real time. Each data occupies significant part of bandwidth in the network and the effect of multiplexing might affect the synchronization scheme of the force feedback device. Our architecture supports the efficient transmission of all types of multimedia information and also maintain the synchronization of the scheme. This method is unique with its methodical approach to support different multimedia information.
4

Regime de colaboração intergovernamental na educação : a experiência do Rio Grande do Sul

Sari, Marisa Timm January 2009 (has links)
O tema deste estudo é a norma constitucional que prescreve à União, aos Estados, ao Distrito Federal e aos Municípios organizarem em regime de colaboração seus sistemas de ensino (Constituição Federal, 1988, art. 211). Há vinte anos, quando a Constituição estabeleceu o regime de colaboração para garantir o compromisso compartilhado dos entes federados pela equidade e qualidade na educação, predominavam as práticas competitivas, clientelistas e hierarquizadas. Considerando a trajetória dos municípios rio-grandenses na tentativa de implementação dessa nova forma de relacionamento com as outras instâncias, definiu-se como objetivo geral da pesquisa estudar as condições de viabilidade do regime de colaboração intergovernamental na gestão da educação básica pública. Ao delimitar o campo de observação às discussões e ações protagonizadas pelo Rio Grande do Sul, no período pós- Constituição de 1988 até 2009 procurou-se resgatar uma experiência ainda não suficientemente analisada e registrada, embora referenciada nacionalmente. Com base na revisão da literatura sobre o regime federativo, o federalismo brasileiro e as relações intergovernamentais no setor educacional, foram estabelecidos seis condicionantes e respectivos indicadores dessa estratégia, quais sejam desenho constitucional como fundamento jurídico, legislação regulamentadora das relações intergovernamentais, partidos, aparato institucional, políticas públicas descentralizadas e mecanismos de acompanhamento e controle social. Foram adotados procedimentos de investigação qualitativa, utilizando-se, principalmente, entrevistas e análise da consciência dos atores e das instituições governamentais e não governamentais diretamente envolvidos no fenômeno estudado, confrontando-as com a análise histórica e documental. Os condicionantes e respectivos indicadores do regime de colaboração evidenciaram efetividade na gestão dos sistemas de ensino no Rio Grande do Sul. Foi possível concluir, portanto, que a organização legal e institucional do Rio Grande do Sul e a cultura de articulação dos municípios foram decisivas para a implantação e implementação do regime de colaboração intergovernamental no setor da educação. O processo evidencia continuidade, alicerçado em mecanismos oficiais de debate e negociação, bem como em políticas e ações pactuadas entre os entes federados. Foram identificados fatores que facilitam e que restringem essas relações e também a presença de competição que deve ser equilibrada com as formas de colaboração. / The theme of this study is the constitutional rule that prescribes to the Union, the States, the Federal District and the Municipalities organize them into collaborative systems of education (Constitution 1988, art. 211). Twenty years ago, when the Constitution established the system of collaboration to ensure the shared commitment of federal entities for equity and quality in education, dominated the competitive, patronage and hierarchical practices. Considering the path of municipalities in Rio Grande do Sul in attempting to implement this new form of relationship with other departments, was defined as objective of the research to study the feasibility of the system of intergovernmental collaboration in the management of basic public education. By delimiting the field of observation to the discussions and actions pushed by Rio Grande do Sul, in the post constitution-from 1988 to 2009, it was tried to rescue an experience not yet adequately analyzed and reported, although the national reference. Based on literature review of the federal system, the Brazilian federalism and the intergovernmental relations in the educational sector have been set six conditions and related indicators of this strategy, namely: constitutional design as the legal, regulatory legislation in the intergovernmental relations, political parties, institutional apparatus, decentralized public policies and mechanisms for monitoring and social control. Qualitative research procedures were adopted, using mainly interviews and analysis of consciousness of the actors and the governmental institutions and non-governmental institutions directly involved in the phenomenon, comparing them with historical and documentary analysis. The conditions and related indicators of the system of collaboration were evidenced in the effectiveness of the management in the education systems in Rio Grande do Sul. It can be concluded therefore that the legal and institutional organization Rio Grande do Sul and the culture for the integration of municipalities were decisive for the organization and implementation arrangements for intergovernmental cooperation in the education sector. The process shows continuity, building on official mechanism for discussion and negotiation, as well as in policies and agreed actions among the counties. Factors that facilitate and restrict these relationships were identified and also the presence of competition that must be balanced with the forms of collaboration.
5

Regime de colaboração intergovernamental na educação : a experiência do Rio Grande do Sul

Sari, Marisa Timm January 2009 (has links)
O tema deste estudo é a norma constitucional que prescreve à União, aos Estados, ao Distrito Federal e aos Municípios organizarem em regime de colaboração seus sistemas de ensino (Constituição Federal, 1988, art. 211). Há vinte anos, quando a Constituição estabeleceu o regime de colaboração para garantir o compromisso compartilhado dos entes federados pela equidade e qualidade na educação, predominavam as práticas competitivas, clientelistas e hierarquizadas. Considerando a trajetória dos municípios rio-grandenses na tentativa de implementação dessa nova forma de relacionamento com as outras instâncias, definiu-se como objetivo geral da pesquisa estudar as condições de viabilidade do regime de colaboração intergovernamental na gestão da educação básica pública. Ao delimitar o campo de observação às discussões e ações protagonizadas pelo Rio Grande do Sul, no período pós- Constituição de 1988 até 2009 procurou-se resgatar uma experiência ainda não suficientemente analisada e registrada, embora referenciada nacionalmente. Com base na revisão da literatura sobre o regime federativo, o federalismo brasileiro e as relações intergovernamentais no setor educacional, foram estabelecidos seis condicionantes e respectivos indicadores dessa estratégia, quais sejam desenho constitucional como fundamento jurídico, legislação regulamentadora das relações intergovernamentais, partidos, aparato institucional, políticas públicas descentralizadas e mecanismos de acompanhamento e controle social. Foram adotados procedimentos de investigação qualitativa, utilizando-se, principalmente, entrevistas e análise da consciência dos atores e das instituições governamentais e não governamentais diretamente envolvidos no fenômeno estudado, confrontando-as com a análise histórica e documental. Os condicionantes e respectivos indicadores do regime de colaboração evidenciaram efetividade na gestão dos sistemas de ensino no Rio Grande do Sul. Foi possível concluir, portanto, que a organização legal e institucional do Rio Grande do Sul e a cultura de articulação dos municípios foram decisivas para a implantação e implementação do regime de colaboração intergovernamental no setor da educação. O processo evidencia continuidade, alicerçado em mecanismos oficiais de debate e negociação, bem como em políticas e ações pactuadas entre os entes federados. Foram identificados fatores que facilitam e que restringem essas relações e também a presença de competição que deve ser equilibrada com as formas de colaboração. / The theme of this study is the constitutional rule that prescribes to the Union, the States, the Federal District and the Municipalities organize them into collaborative systems of education (Constitution 1988, art. 211). Twenty years ago, when the Constitution established the system of collaboration to ensure the shared commitment of federal entities for equity and quality in education, dominated the competitive, patronage and hierarchical practices. Considering the path of municipalities in Rio Grande do Sul in attempting to implement this new form of relationship with other departments, was defined as objective of the research to study the feasibility of the system of intergovernmental collaboration in the management of basic public education. By delimiting the field of observation to the discussions and actions pushed by Rio Grande do Sul, in the post constitution-from 1988 to 2009, it was tried to rescue an experience not yet adequately analyzed and reported, although the national reference. Based on literature review of the federal system, the Brazilian federalism and the intergovernmental relations in the educational sector have been set six conditions and related indicators of this strategy, namely: constitutional design as the legal, regulatory legislation in the intergovernmental relations, political parties, institutional apparatus, decentralized public policies and mechanisms for monitoring and social control. Qualitative research procedures were adopted, using mainly interviews and analysis of consciousness of the actors and the governmental institutions and non-governmental institutions directly involved in the phenomenon, comparing them with historical and documentary analysis. The conditions and related indicators of the system of collaboration were evidenced in the effectiveness of the management in the education systems in Rio Grande do Sul. It can be concluded therefore that the legal and institutional organization Rio Grande do Sul and the culture for the integration of municipalities were decisive for the organization and implementation arrangements for intergovernmental cooperation in the education sector. The process shows continuity, building on official mechanism for discussion and negotiation, as well as in policies and agreed actions among the counties. Factors that facilitate and restrict these relationships were identified and also the presence of competition that must be balanced with the forms of collaboration.
6

Regime de colaboração intergovernamental na educação : a experiência do Rio Grande do Sul

Sari, Marisa Timm January 2009 (has links)
O tema deste estudo é a norma constitucional que prescreve à União, aos Estados, ao Distrito Federal e aos Municípios organizarem em regime de colaboração seus sistemas de ensino (Constituição Federal, 1988, art. 211). Há vinte anos, quando a Constituição estabeleceu o regime de colaboração para garantir o compromisso compartilhado dos entes federados pela equidade e qualidade na educação, predominavam as práticas competitivas, clientelistas e hierarquizadas. Considerando a trajetória dos municípios rio-grandenses na tentativa de implementação dessa nova forma de relacionamento com as outras instâncias, definiu-se como objetivo geral da pesquisa estudar as condições de viabilidade do regime de colaboração intergovernamental na gestão da educação básica pública. Ao delimitar o campo de observação às discussões e ações protagonizadas pelo Rio Grande do Sul, no período pós- Constituição de 1988 até 2009 procurou-se resgatar uma experiência ainda não suficientemente analisada e registrada, embora referenciada nacionalmente. Com base na revisão da literatura sobre o regime federativo, o federalismo brasileiro e as relações intergovernamentais no setor educacional, foram estabelecidos seis condicionantes e respectivos indicadores dessa estratégia, quais sejam desenho constitucional como fundamento jurídico, legislação regulamentadora das relações intergovernamentais, partidos, aparato institucional, políticas públicas descentralizadas e mecanismos de acompanhamento e controle social. Foram adotados procedimentos de investigação qualitativa, utilizando-se, principalmente, entrevistas e análise da consciência dos atores e das instituições governamentais e não governamentais diretamente envolvidos no fenômeno estudado, confrontando-as com a análise histórica e documental. Os condicionantes e respectivos indicadores do regime de colaboração evidenciaram efetividade na gestão dos sistemas de ensino no Rio Grande do Sul. Foi possível concluir, portanto, que a organização legal e institucional do Rio Grande do Sul e a cultura de articulação dos municípios foram decisivas para a implantação e implementação do regime de colaboração intergovernamental no setor da educação. O processo evidencia continuidade, alicerçado em mecanismos oficiais de debate e negociação, bem como em políticas e ações pactuadas entre os entes federados. Foram identificados fatores que facilitam e que restringem essas relações e também a presença de competição que deve ser equilibrada com as formas de colaboração. / The theme of this study is the constitutional rule that prescribes to the Union, the States, the Federal District and the Municipalities organize them into collaborative systems of education (Constitution 1988, art. 211). Twenty years ago, when the Constitution established the system of collaboration to ensure the shared commitment of federal entities for equity and quality in education, dominated the competitive, patronage and hierarchical practices. Considering the path of municipalities in Rio Grande do Sul in attempting to implement this new form of relationship with other departments, was defined as objective of the research to study the feasibility of the system of intergovernmental collaboration in the management of basic public education. By delimiting the field of observation to the discussions and actions pushed by Rio Grande do Sul, in the post constitution-from 1988 to 2009, it was tried to rescue an experience not yet adequately analyzed and reported, although the national reference. Based on literature review of the federal system, the Brazilian federalism and the intergovernmental relations in the educational sector have been set six conditions and related indicators of this strategy, namely: constitutional design as the legal, regulatory legislation in the intergovernmental relations, political parties, institutional apparatus, decentralized public policies and mechanisms for monitoring and social control. Qualitative research procedures were adopted, using mainly interviews and analysis of consciousness of the actors and the governmental institutions and non-governmental institutions directly involved in the phenomenon, comparing them with historical and documentary analysis. The conditions and related indicators of the system of collaboration were evidenced in the effectiveness of the management in the education systems in Rio Grande do Sul. It can be concluded therefore that the legal and institutional organization Rio Grande do Sul and the culture for the integration of municipalities were decisive for the organization and implementation arrangements for intergovernmental cooperation in the education sector. The process shows continuity, building on official mechanism for discussion and negotiation, as well as in policies and agreed actions among the counties. Factors that facilitate and restrict these relationships were identified and also the presence of competition that must be balanced with the forms of collaboration.
7

Achieving non-intrusive interoperability between models for involving users in modeling tasks

Pérez Pérez, María Francisca 02 December 2015 (has links)
[EN] Model-Driven Development (MDD) promotes models as the cornerstone in the software development process, thereby displacing source code as the development process's main feature. Although this model-centric schema claims advantages over traditional software development (e.g., the code could be automatically generated from the models), it does not have the level of adoption that has been expected. The literature review reveals a broad agreement in the fact that end-users may develop and adapt systems themselves but the complexity in modeling standards and the lack of modeling skills prevents their active involvement in modeling tasks of existing MDD processes. To overcome this, end-users should be provided with different modeling languages that use concepts, which fit their particular skills, context and needs. This challenge is the main goal of this thesis, which is addressed by combining the End-user Development and the Model-Driven Development fields. This work starts with the involvement of end-users into the modeling tasks using a tool-supported visual modeling language that allows end-users to select and customize system features of pervasive systems using closer concepts for them. Afterwards, this thesis shows the necessity of enriching existing MDD processes for supporting the development of a new generation of software systems (e.g., smart health) that require expertise in a variety of domains. Consequently, different types of users (e.g., scientists, engineers and end-users) must actively participate in the description of model fragments that depend on their expertise using a different modeling language. Thus, users are able to collaborate to obtain a unified system description. At this point, it becomes necessary to provide mechanisms that transforms models fragments from one modeling language to another, delimits which model fragments are described by a different user, and integrates those model fragments. To provide this, the presented approach encompasses variability management in a novel way to enable collaborative modeling by supporting both the selection of model fragments of the system that may be described using a different modeling language, and the integration of those model fragments once they are described. Furthermore, interoperability mechanisms bridge two different modeling languages in a non-intrusive way with the structure of models by transforming the description of gaps. Thus, our proposal could enrich models of existing MDD processes with model fragments that have been described using a different modeling language, which could make users feel confident to adopt models for describing domain-specific content and could help to adopt MDD processes. The proposal has been validated in three case studies from different levels of complexity and domains: smart home systems, web information systems, and biomechanical protocols. The results have proven the applicability and feasibility of our approach to actively involve different types of users (end- users with software professionals, domain experts with software development experts, and doctors with biomedical engineers, respectively) in model descriptions of existing MDD processes using a different modeling language. / [ES] En el Desarrollo de Software Dirigido por Modelos (DSDM) los modelos son la piedra angular del proceso de desarrollo de software, desplazando así al código fuente como artefacto principal. Aunque este enfoque centrado en modelos ofrece ventajas sobre el desarrollo de software tradicional (por ejemplo, la generación de código de forma automática a partir de los modelos) no tiene el nivel de adopción esperado. La literatura científica revela un amplio acuerdo en el hecho de que los usuarios finales puedan ellos mismos desarrollar y adaptar los sistemas pero la complejidad de los estándares de modelado y la carencia de habilidades de modelado impide su participación activa en procesos DSDM existentes. Para lograrlo, los usuarios finales deben disponer de lenguajes de modelado diferentes con conceptos adaptados a sus habilidades, contexto y necesidades. Este desafío es el objetivo principal de esta tesis que se aborda combinando las ideas del desarrollo orientado al usuario final y el DSDM. Este trabajo comienza involucrando usuarios finales en tareas de modelado con una herramienta que les proporciona un lenguaje de modelado visual para seleccionar y personalizar características de un sistema pervasivo utilizando conceptos familiares para ellos. Después, esta tesis motiva la necesidad de enriquecer procesos de DSDM existentes para soportar el desarrollo de una nueva generación de sistemas software (por ejemplo, salud inteligente) que requieren conocimientos especializados en una variedad de dominios. Consecuentemente, diferentes tipos de usuarios (por ejemplo, científicos, ingenieros y usuarios finales) deben participar activamente en la descripción de fragmentos de modelos que dependen de su experiencia utilizando un lenguaje de modelado diferente. De este modo, los usuarios pueden colaborar para obtener una descripción del sistema unificada. En este punto, es necesario proporcionar mecanismos que transformen e integren los fragmentos de un lenguaje de modelado a otro y delimiten qué fragmentos se describen por un usuario diferente. Para proporcionar esto, la propuesta presentada utiliza la gestión de variabilidad de forma novedosa para permitir modelado colaborativo seleccionando fragmentos de un modelo del sistema que pueden ser descritos utilizando un lenguaje de modelado diferente y, la integración de esos fragmentos una vez que hayan sido descritos. Además, la propuesta utiliza mecanismos de interoperabilidad para conectar dos lenguajes de modelado diferentes transformando la descripción de los fragmentos de una manera no invasiva con su estructura. Por tanto, nuestra propuesta puede enriquecer los modelos de procesos DSDM existentes con fragmentos de modelos que han sido descritos con un lenguaje diferente y esto, podría hacer que los usuarios se sientan seguros al adoptar modelos para describir contenido de dominio específico y podría ayudar a adoptar procesos DSDM. La propuesta ha sido validada en tres casos de estudio con diferentes niveles de complejidad y dominios: sistemas para el hogar inteligente, sistemas de información web y protocolos biomecánicos. Los resultados han demostrado la aplicabilidad y viabilidad de nuestra propuesta para involucrar diferentes tipos de usuarios (usuarios finales con profesionales de software, expertos en el dominio con expertos en desarrollo de software y, médicos con ingenieros biomédicos, respectivamente) en descripciones de modelos de procesos DSDM existentes utilizando un lenguaje de modelado diferente. / [CAT] En el Desenvolupament de Programari Dirigit per Models (DPDM) els models són la pedra angular del procés de desenvolupament de programari, desplaçant així al codi font com a artefacte principal. Encara que aquest enfocament centrat en models ofereix avantatges sobre el desenvolupament de programari tradicional (per exemple, la generació de codi de forma automàtica a partir dels models) no té el nivell d'adopció esperat. La literatura científica revela un ampli acord en el fet que els usuaris finals puguen ells mateixos desenvolupar i adaptar els sistemes però la complexitat dels estàndards de modelatge i la falta d'habilitats de modelatge impedeix la seua participació activa en processos DPDM existents. Per a aconseguir-ho, els usuaris finals han de disposar de llenguatges de modelatge diferents amb conceptes adaptats a les seues habilitats, context i necessitats. Aquest desafiament és l'objectiu principal d'aquesta tesi que s'aborda combinant les idees del desenvolupament orientat a l'usuari final i el DPDM. Aquest treball comença involucrant usuaris finals en tasques de modelatge amb una eina que els proporciona un llenguatge de modelatge visual que permet als usuaris finals seleccionar i personalitzar característiques d'un sistema pervasiu utilitzant conceptes familiars per a ells. Després, aquesta tesi motiva la necessitat d'enriquir processos de DPDM existents per a suportar el desenvolupament d'una nova generació de sistemes programari (per exemple, salut intel¿ligent) que requereixen coneixements especialitzats en una varietat de dominis. Conseqüentment, diferents tipus d'usuaris (per exemple, científics, enginyers i usuaris finals) han de participar activament en la descripció de fragments de models que depenen de la seua experiència utilitzant un llenguatge de modelatge diferent. D'aquesta manera, els usuaris poden col¿laborar per a obtenir una descripció del sistema unificada. En aquest punt, és necessari proporcionar mecanismes que transformen i integren els fragments d'un llenguatge de modelatge a un altre i delimiten quins fragments es descriuen per un usuari diferent. Per a proporcionar açò, la proposta presentada utilitza la gestió de variabilitat de forma nova per a permetre modelatge col.laboratiu seleccionant fragments d'un model del sistema que poden ser descrits utilitzant un llenguatge de modelatge diferent i, la integració d'aqueixos fragments una vegada que hagen sigut descrits. A més, la proposta utilitza mecanismes d'interoperabilitat per a connectar dos llenguatges de modelatge diferents transformant la descripció dels fragments d'una manera no invasiva amb la seua estructura. Per tant, la nostra proposta pot enriquir els models de processos DPDM existents amb fragments de models que han sigut descrits amb un llenguatge diferent i açò, podria fer que els usuaris se senten segurs en adoptar models per a descriure contingut de domini específic i podria ajudar a adoptar processos DPDM. La proposta ha sigut validada en tres casos d'estudi amb diferents nivells de complexitat i dominis: sistemes per a la llar intel¿ligent, sistemes d'informació web i protocols biomecànics. Els resultats han demostrat l'aplicabilitat i viabilitat de la nostra proposta per a involucrar diferents tipus d'usuaris (usuaris finals amb professionals de programari, experts en el domini amb experts en desenvolupament de programari i, metges amb enginyers biomèdics, respectivament) en descripcions de models de processos DPDM existents utilitzant un llenguatge de modelatge diferent. / Pérez Pérez, MF. (2015). Achieving non-intrusive interoperability between models for involving users in modeling tasks [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/58429 / TESIS
8

SECOMBOT: seleção por competências utilizando um sistema colaborativo 3D com tarefas robóticas / SECOMBOT: Selection by competencies through a 3D Collaborative system with robotic tasks

Dias, Claudinei 24 August 2015 (has links)
Made available in DSpace on 2016-12-12T20:22:53Z (GMT). No. of bitstreams: 1 Claudinei Dias.pdf: 3217728 bytes, checksum: cafad13fc588ddad7bd48bd1d088c26c (MD5) Previous issue date: 2015-08-24 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / With the increasing globalization of the economy and business, organizations need to make use of instruments that help recruit and select functional profiles that have the skills to improve their productivity, quality and competitiveness. This paper presents a collaborative telerobotic system, called SECOMBOT, which assists in the selection of competencies through robotic collaborative tasks in shared 3D space. The system was developed based on a Competence Plan using the Know-Do-Share (KDS) model and employing fundamentals of Knowledge, Skills and Attitudes (KSA) model that identify areas of skills required to develop collaborative tasks. Four Training Tasks were implemented to create opportunities to develop skills within the robotic virtual environment and a Main Task to enhance and evaluate the skills acquired or required. A set of metrics is recorded automatically by the system to serve as an instrument to specialists, with data that can be useful in the selection. The SECOMBOT was rated by Human Resources (HR) specialists in a simulated context of Recruitment and Selection (R&S) in a group dynamic in pairs of candidates for Virtual Robot Operator. The results obtained, two tasks have been successfully completed, and one was modeled to require collaborative skills during its execution. Accordingly, it may be suggested that the use of a collaborative system can serve as a complementary tool in the selection process to help identify competencies required for a candidate for a job opening. / Com a crescente globalização da economia e dos negócios, as organizações precisam fazer uso de instrumentos que ajudem a recrutar e selecionar perfis funcionais que tenham competências para aprimorar sua produtividade, qualidade e competitividade. Este trabalho apresenta um sistema colaborativo telerrobótico, denominado SECOMBOT, que auxilia no processo de Seleção por Competências utilizando tarefas colaborativas robóticas em espaço 3D compartilhado. O sistema foi desenvolvido com base em um plano de competências utilizando o modelo Know-Do-Share (KDS), assim como, foi utilizado os fundamentos do modelo Conhecimentos, Habilidades e Atitudes (CHA) que identificam os domínios de competências necessárias para desenvolver as tarefas colaborativas. Foram implementadas quatro Tarefas Treino para oportunizar o desenvolvimento de competências dentro do ambiente virtual robótico, além de uma Tarefa Principal para potencializar e avaliar as competências adquiridas ou requeridas. Um conjunto de métricas é registrado automaticamente pelo sistema, o qual pode servir de instrumento aos especialistas no processo de seleção. O SECOMBOT foi avaliado por especialistas em Recursos Humanos (RH) em um contexto simulado de Recrutamento e Seleção (R&S) em uma dinâmica de grupo com supostos candidatos à vaga de Operador de Robô Virtual. Dos resultados obtidos, duas tarefas foram concluídas com sucesso, sendo que uma foi modelada para requerer competências colaborativas durante sua execução. Nestes termos, pode-se sugerir que o uso de um sistema colaborativo pode servir como uma ferramenta complementar no processo de seleção para auxiliar a identificar competências requeridas em um candidato a uma vaga de emprego.
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Databázový archív obrazových medicínských dat / Database Archive of Image Medical Data

Sára, Vítězslav January 2008 (has links)
This Thesis deals with the problems of medical image data management. It analyzes a metadata extraction problem from medical format DICOM and their efficient saving. System is designed as a client-server application. System provides an interface for DICOM data storing, interface for searching, data editing and exporting. System cooperatives with the collaborative system VCE. Implementation was carried out in C++ and PHP language with support of SQLite and MySQL database.
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[en] A GRAPH-BASED COLLABORATIVE SUPPORT FOR EXPERT FINDING AND RECOMMENDING REFERENCES IN SCIENTIFIC PUBLICATIONS / [pt] SUPORTE COLABORATIVO BASEADO EM GRAFOS PARA LOCALIZAR ESPECIALISTAS E RECOMENDAR REFERÊNCIAS EM ARTIGOS CIENTÍFICOS

ORLANDO FONSECA GUILARTE 07 April 2020 (has links)
[pt] A revisão da literatura científica é um relato crítico dos principais trabalhos em uma área ou tópico específico. Dessa forma, os autores buscam a literatura e apresentam os artigos relevantes de forma organizada por data de publicação e evolução de um tema de pesquisa. Revisões da literatura fornecem uma fotografia do estado da arte de um tópico de pesquisa. Através da seleção dos trabalhos mais importantes de uma certa área é possível identificar os autores mais especializados na área ou em determinados artigos, proporcionando assim uma solução para o problema de encontrar potenciais candidatos especialistas. Nesta tese estudaremos o problema de selecionar e visualizar os artigos mais relevantes que refletem a evolução de um tópico de pesquisa. Para isso, propomos uma abordagem visual colaborativa baseada em grafos para recomendar referências importantes. Apresentamos também a tarefa de encontrar e classificar os autores dado um artigo científico usando caminhos de citações relevantes. A partir de um ranking de referências, o valor da expertise dos autores é calculado. Uma metodologia é proposta para construir e atualizar o grafo de citações de forma colaborativa com os votos dos especialistas. / [en] The scientific literature review is a critical account of the main papers in a particular subject area or topic. In this way, the authors surveys the literature and present the relevant articles in an organized way by publication date and evolution of the research topic, which gives an overview of the state of the art in a subject. Through these relevant papers it is also possible to identify the most expert authors in the area or in certain papers, thus providing a solution to the problem of finding potential expert candidates. The main challenge of making a literature review is to identify the most relevant articles that reflect the evolution of the different research topics. In this thesis, we propose a visual collaborative approach that uses graphs to recommend important references. In addition, we introduce the task of searching and ranking authors given a target paper using relevant citation paths. From a ranking of references, the value of the author s expertise is calculated. A methodology is proposed in order to build and update the citation graph in a collaborative way with the expert s votes.

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