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The Global ETD Search service is a free service for researchers
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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.
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Showing 11 to 18 of 18 (0.014 seconds)| 11 |
A Framework for Monitoring and Adapting Business Processes Using Aspect-Oriented URNPourshahid, Alireza 28 April 2014 (has links)
Context:
Organizations strive to improve their business processes, and adaptive business processes have recently attracted much attention in that context. However, much research in that area has a narrow focus and does not consider a comprehensive view of the organization and its goals. In addition, Business Intelligence-based monitoring methods are useful for business process improvement but they often present information in a format that is not entirely suited for decision making.
Objectives:
The main objectives of this thesis are to provide:
• A framework to model goals, processes, performance, situations, and improvement patterns using one modeling notation, in an iterative and incremental manner;
• A method for the modeling and analysis of cause-effect relationships between indicators used to measure goal satisfaction; and
• A technique allowing the detection of undesirable, sub-optimal conditions and the application of improvement patterns to the context
Method:
We develop an iterative framework based on the User Requirements Notation (URN) for modeling, monitoring and improving business organizations and their business processes. In addition, we introduce a formula-based evaluation algorithm allowing better analysis of the relationships between the business performance model elements (namely indicators). Furthermore, we use a profiled version of the Aspect-oriented URN (AoURN) with extensions (Business Process Pattern profile), for detecting undesirable conditions and for business process adaptation. We validate the novelty and feasibility of our approach by performing a systematic literature review, by assessing it against Zellner’ mandatory elements of a method, by developing tool support, by performing a pilot experiment and by using real-life examples from different sectors (healthcare and retail).
Results:
The two examples show that through the framework’s iterative approach, organizations at different levels of maturity in their business improvement journey can benefit from the framework. Furthermore, our systematic literature review shows that although there are existing works that enable our vision, most of them have a narrow focus and do not cover the three organization views that are of interest in this research. AoURN allows analysts to find repeated patterns in a context and bundle goal, performance and process models as a self-contained unit. AoURN hence enables the modeling of complex circumstances together with analysis techniques for what-if analysis and process adaptation, all using a unified and integrated modeling language. Finally, the pilot experiment suggests that, with some level of documentation and training, users who are already familiar with URN can use the profiled AoURN provided in this thesis as well as the discussed improvement patterns.
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Unidade microcontroladora para gerenciamento eletrônico de um motor de combustão interna ciclo Otto. / Microcontroller electronic unit to manage an Otto cycle internal combustion engine.Bruno Martin de Alcantara Dias 26 March 2015 (has links)
Nas últimas décadas, a indústria automobilística mundial vem investindo no desenvolvimento tecnológico dos motores, com o objetivo de alcançar melhor eficiência energética e atender às legislações que limitam a quantidade de resíduos tóxicos nos gases de exaustão e menor consumo de combustível. Isso resultou na implantação dos sistemas de gerenciamento eletrônico do motor, que possibilitam funcionalidades para se controlar diversas variáveis do motor, aumentando consideravelmente o rendimento do motor. Este trabalho tem como objetivos explorar a dinâmica de um motor de combustão interna ciclo Otto, os sinais elétricos associados, e os componentes de seu gerenciamento eletrônico. A partir dessas informações, o trabalho apresenta o processo de analise dos sinais elétricos e as estratégias de controle utilizadas em um sistema de gerenciamento real. Assim, são desenvolvidos o hardware e o firmware de uma unidade microcontroladora para gerenciamento eletrônico do motor. O hardware foi elaborado com uma concepção centralizada, ou seja, foi usado apenas um microcontrolador de 32-bit para gerenciar todas as funções. O firmware de controle foi desenvolvido de forma modular baseado em modelos de malha fechada. O modelo matemático do motor foi identificado utilizando técnicas de controle em um veículo real, e a avalidação do modelo foi obtida através de testes em um dinamômetro inercial. / In the last few decades, the world automotive industry has invested in the technological development of the engines, aiming to get better energetic efficiency and comply with legislations that limit the amount of toxic exhaustion gases. This resulted in electronic management systems for engines, which allowed flexibility to control several engine-related variables, considerably increasing the engine efficiency. This work aims to explore the Otto cycle combustion engine dynamics, its electronic signals, and the elements of its electronic management. Based on that information, this work presents the analysis process of the electronic signals, and the control strategies used in a real management system. Then, the hardware and firmware of a microcontroller unity are developed for the electronic management of the engine. The hardware was elaborated with a centralized concept, i.e., only one 32-bit microcontroller was used to control all functions. The control firmware was developed in a modular scheme, based on the closed loop models. The engine mathematical model was identified using control techniques in a real engine. The results were obtained by tests in an inertial dynamometer.
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A Framework for Monitoring and Adapting Business Processes Using Aspect-Oriented URNPourshahid, Alireza January 2014 (has links)
Context:
Organizations strive to improve their business processes, and adaptive business processes have recently attracted much attention in that context. However, much research in that area has a narrow focus and does not consider a comprehensive view of the organization and its goals. In addition, Business Intelligence-based monitoring methods are useful for business process improvement but they often present information in a format that is not entirely suited for decision making.
Objectives:
The main objectives of this thesis are to provide:
• A framework to model goals, processes, performance, situations, and improvement patterns using one modeling notation, in an iterative and incremental manner;
• A method for the modeling and analysis of cause-effect relationships between indicators used to measure goal satisfaction; and
• A technique allowing the detection of undesirable, sub-optimal conditions and the application of improvement patterns to the context
Method:
We develop an iterative framework based on the User Requirements Notation (URN) for modeling, monitoring and improving business organizations and their business processes. In addition, we introduce a formula-based evaluation algorithm allowing better analysis of the relationships between the business performance model elements (namely indicators). Furthermore, we use a profiled version of the Aspect-oriented URN (AoURN) with extensions (Business Process Pattern profile), for detecting undesirable conditions and for business process adaptation. We validate the novelty and feasibility of our approach by performing a systematic literature review, by assessing it against Zellner’ mandatory elements of a method, by developing tool support, by performing a pilot experiment and by using real-life examples from different sectors (healthcare and retail).
Results:
The two examples show that through the framework’s iterative approach, organizations at different levels of maturity in their business improvement journey can benefit from the framework. Furthermore, our systematic literature review shows that although there are existing works that enable our vision, most of them have a narrow focus and do not cover the three organization views that are of interest in this research. AoURN allows analysts to find repeated patterns in a context and bundle goal, performance and process models as a self-contained unit. AoURN hence enables the modeling of complex circumstances together with analysis techniques for what-if analysis and process adaptation, all using a unified and integrated modeling language. Finally, the pilot experiment suggests that, with some level of documentation and training, users who are already familiar with URN can use the profiled AoURN provided in this thesis as well as the discussed improvement patterns.
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Architecture de Négociation et d'Adaptation de Services Multimédia dans des Environnements HétérogènesLEMLOUMA, Tayeb 09 June 2004 (has links) (PDF)
Les progrès technologiques récents ont permis l'apparition d'une grande variété de nouveaux moyens pour accéder et utiliser l'information multimédia du Web en tout lieu et à tout moment. L'hétérogénéité des appareils d'accès s'est accompagné une évolution importante de l'information disponible sur le réseau. Aujourd'hui, on trouve une multitude de formats complexes avec de nouvelles fonctionnalités, telles que la vidéo interactive, les animations 3D et le dessin vectoriel. Ces formats s'appuient sur de nouveaux modèles de documents qui intègrent une structure logique, spatiale, temporelle et une dimension hypermédia.<br /><br />Face à cette évolution, il est nécessaire de concevoir des systèmes qui permettent l'accès et l'utilisation de l'information sous une forme qui corresponde aux contraintes imposées par l'environnement. Cette thèse a pour objectif de contribuer à l'adaptation et à la négociation des contenus en considérant les limitations des utilisateurs et les contraintes de leur environnement. Nous présentons une architecture flexible appelée NAC qui permet de définir les composants qui interviennent dans la négociation et l'adaptation de contenu, et qui décrit comment ces composants sont organisés.<br /><br />NAC permet plusieurs types d'adaptation : une adaptation structurelle, une adaptation sémantique et une adaptation des ressources médias. Ces types d'adaptation sont basés sur les différents contextes des clients (caractéristiques des terminaux, préférences des utilisateurs, etc.). Nous proposons également un modèle de description de contextes UPS (schémas universels pour la description des profils), un protocole de négociation et un ensemble de techniques d'adaptation. Les concepts de l'architecture NAC ont contribué aux travaux de standardisation du consortium W3C, en particulier au cadre de travail CC/PP et aux travaux sur l'indépendance des terminaux. Cette étude est complétée par une évaluation de performances qui démontre que le système proposé est exploitable dans la pratique.
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Lutter contre les discriminations ethno-raciales et/ou promouvoir la diversité dans le domaine de l'emploi ?le développement d'une action publique ambiguë en Région de Bruxelles-Capitale, 1997-2012Tande, Alexandre 20 December 2013 (has links)
A Bruxelles comme dans d’autres contextes régionaux et nationaux, de nombreux professionnels et spécialistes présentent les notions de discrimination et de diversité dans le domaine de l’emploi comme « les deux faces d’une même pièce » :au dépassement de la première répondrait l’avènement de la seconde. Considérant ce discours comme problématique, nous retraçons dans notre thèse l’émergence et le développement de l’action publique bruxelloise de lutte contre les discriminations ethno-raciales et de promotion de la diversité en matière d’emploi, depuis la fin des années 1990. Dans une perspective qualitative, nous analysons les conditions d’élaboration et de mise en œuvre de cette action publique régionale, en prêtant une attention particulière aux pratiques des acteurs et aux effets concrets des dispositifs (en particulier le « Plan de diversité »). Au-delà du caractère séduisant et consensuel de la notion de diversité, nous montrons que les interventions qui s’en réclament tendent à perdre de vue le problème des discriminations ethno-raciales en matière d’emploi, qu’elles devaient pourtant contribuer à réduire. Les entreprises privées peuvent ne pas voir l’utilité ni la pertinence des « bonnes pratiques » de gestion des ressources humaines promues dans ce cadre. Et même lorsque les pratiques managériales évoluent, cela n’a pas forcément d’effet en matière de recrutement ou de reconnaissance symbolique des minorités ethno-raciales. / Doctorat en Sciences politiques et sociales / info:eu-repo/semantics/nonPublished
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Combining Business Intelligence, Indicators, and the User Requirements Notation for Performance MonitoringJohari Shirazi, Iman 26 November 2012 (has links)
Organizations use Business Intelligence (BI) systems to monitor how well they are meeting
their goals and objectives. Yet, very often BI systems do not include clear models of
the organization’s goals or of how to measure whether they are satisfied or not. Several
researchers now attempt to integrate goal models into BI systems, but there are still major
challenges related to how to get access to the BI data to populate the part of the goal
model (often indicators) used to assess goal satisfaction.
This thesis explores a new approach to integrate BI systems with goal models. In
particular, it explores the integration of IBM Cognos Business Intelligence, a leading BI
tool, with an Eclipse-based goal modeling tool named jUCMNav. jUCMNav is an open
source graphical editor for the User Requirements Notation (URN), which includes the
Use Case Map notation for scenarios and processes and the Goal-oriented Requirement
Language for business objectives. URN was recently extended with the concept of Key
Performance Indicator (KPI) to enable performance assessment and monitoring of business
processes. In jUCMNav, KPIs are currently calculated or modified manually. The
new integration proposed in this thesis maps these KPIs to report elements that are generated
automatically by Cognos based on the model defined in jUCMNav at runtime, with
minimum effort. We are using IBM Cognos Mashup Service, which includes web services
that enable the retrieval of report elements at the most granular level. This transformation
provides managers and analysts with useful goal-oriented and process-oriented
monitoring views fed by just-in-time BI information. This new solution also automates
retrieving data from Cognos servers, which helps reducing the high costs usually caused
by the amount of manual work required otherwise.
The novel approach presented in this thesis avoids manual report generation and
minimizes any contract with respect to the location of manually created reports, hence
leading to better usability and performance. The approach and its tool support are illustrated
with an ongoing example, validated with a case study, and verified through testing.
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Combining Business Intelligence, Indicators, and the User Requirements Notation for Performance MonitoringJohari Shirazi, Iman 26 November 2012 (has links)
Organizations use Business Intelligence (BI) systems to monitor how well they are meeting
their goals and objectives. Yet, very often BI systems do not include clear models of
the organization’s goals or of how to measure whether they are satisfied or not. Several
researchers now attempt to integrate goal models into BI systems, but there are still major
challenges related to how to get access to the BI data to populate the part of the goal
model (often indicators) used to assess goal satisfaction.
This thesis explores a new approach to integrate BI systems with goal models. In
particular, it explores the integration of IBM Cognos Business Intelligence, a leading BI
tool, with an Eclipse-based goal modeling tool named jUCMNav. jUCMNav is an open
source graphical editor for the User Requirements Notation (URN), which includes the
Use Case Map notation for scenarios and processes and the Goal-oriented Requirement
Language for business objectives. URN was recently extended with the concept of Key
Performance Indicator (KPI) to enable performance assessment and monitoring of business
processes. In jUCMNav, KPIs are currently calculated or modified manually. The
new integration proposed in this thesis maps these KPIs to report elements that are generated
automatically by Cognos based on the model defined in jUCMNav at runtime, with
minimum effort. We are using IBM Cognos Mashup Service, which includes web services
that enable the retrieval of report elements at the most granular level. This transformation
provides managers and analysts with useful goal-oriented and process-oriented
monitoring views fed by just-in-time BI information. This new solution also automates
retrieving data from Cognos servers, which helps reducing the high costs usually caused
by the amount of manual work required otherwise.
The novel approach presented in this thesis avoids manual report generation and
minimizes any contract with respect to the location of manually created reports, hence
leading to better usability and performance. The approach and its tool support are illustrated
with an ongoing example, validated with a case study, and verified through testing.
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Combining Business Intelligence, Indicators, and the User Requirements Notation for Performance MonitoringJohari Shirazi, Iman January 2012 (has links)
Organizations use Business Intelligence (BI) systems to monitor how well they are meeting
their goals and objectives. Yet, very often BI systems do not include clear models of
the organization’s goals or of how to measure whether they are satisfied or not. Several
researchers now attempt to integrate goal models into BI systems, but there are still major
challenges related to how to get access to the BI data to populate the part of the goal
model (often indicators) used to assess goal satisfaction.
This thesis explores a new approach to integrate BI systems with goal models. In
particular, it explores the integration of IBM Cognos Business Intelligence, a leading BI
tool, with an Eclipse-based goal modeling tool named jUCMNav. jUCMNav is an open
source graphical editor for the User Requirements Notation (URN), which includes the
Use Case Map notation for scenarios and processes and the Goal-oriented Requirement
Language for business objectives. URN was recently extended with the concept of Key
Performance Indicator (KPI) to enable performance assessment and monitoring of business
processes. In jUCMNav, KPIs are currently calculated or modified manually. The
new integration proposed in this thesis maps these KPIs to report elements that are generated
automatically by Cognos based on the model defined in jUCMNav at runtime, with
minimum effort. We are using IBM Cognos Mashup Service, which includes web services
that enable the retrieval of report elements at the most granular level. This transformation
provides managers and analysts with useful goal-oriented and process-oriented
monitoring views fed by just-in-time BI information. This new solution also automates
retrieving data from Cognos servers, which helps reducing the high costs usually caused
by the amount of manual work required otherwise.
The novel approach presented in this thesis avoids manual report generation and
minimizes any contract with respect to the location of manually created reports, hence
leading to better usability and performance. The approach and its tool support are illustrated
with an ongoing example, validated with a case study, and verified through testing.
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