Rozprawy doktorskie: „Workflow”

1

Dai, Zhen Zhong. "Workflow application and workflow engine". Thesis, University of Macau, 2005. http://umaclib3.umac.mo/record=b1447902.

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Ho, Kam Seng. "Workflow testing". Thesis, University of Macau, 2011. http://umaclib3.umac.mo/record=b2550562.

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Atmire, Atmire. "Test Workflow". Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/46073.

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Fleuren, Tino [Verfasser]. "Workflow-Skelette: Konzeptionen zur Modellierung und effizienten Ausführung wissenschaftlicher Workflows / Tino Fleuren". München : Verlag Dr. Hut, 2014. http://d-nb.info/1064560415/34.

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Gu, Shuqing, i Shuqing Gu. "An Autonomic Workflow Performance Manager for Weather Forecast and Research Modeling Workflows". Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/621837.

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Parameter selection is a critical task in scientific workflows in order to maintain the accuracy of the simulation in an environment where physical conditions change dynamically such as in the case of weather research and forecast simulations. Currently, Numerical Weather Prediction (NWP) is the premier method for weather prediction, which is used by the National Oceanic and Atmospheric Administration (NOAA). It takes the current observations from observed sites as the input for numeric computer models and then produces the final prediction. Considering the large number of simulation parameters, the size of the configuration search space becomes prohibitive for rapidly evaluating and identifying the parameter configuration that leads to most accurate prediction. In this thesis, we develop an Autonomic Workflow Performance Manager (AWPM) for Hurricane Integrated Modeling System (HIMS). AWPM is implemented on top of the Apache Storm and ZooKeeper to handle multiple real-time data streams for weather forecast. AWPM can automatically manage model initialization and execution workflow and achieve better performance and efficiency. In our experiments, AWPM achieves better performance and efficiency for the model initialization and execution processes, by utilizing automatic computing, distributed computing and component-based development. We reduced the timescale of the configuration search workflow by a factor of 10 by using 20 threads with the full search method, and a factor of 20 by with the roofline method when compared to serial workflow execution as it is typically performed by domain scientists.

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Kunis, Raphael. "Konzeption und Entwicklung einer Schnittstelle zur hierarchischen Abarbeitung räumlich verteilter Workflows". Master's thesis, Universitätsbibliothek Chemnitz, 2005. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200500416.

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In dieser Diplomarbeit wird eine Möglichkeit für die Abarbeitung von verteilten Workflows konzeptuell erarbeitet und prototypisch implementiert. Dabei werden als Grundlage des Konzepts die Standards der Workflow Management Coalition zur Beschreibung von Workflows und Workflow Management Systemen verwendet. Für die verteilte Abarbeitung von Prozessen wurde eine RMI-basierte Abwandlung des ASAP-Protokolls implementiert. Die Implementierung nutzt Enhydra Shark als Laufzeitumgebung und die Schnittstellen für die verteilte Abarbeitung sind für dieses System angepasst. Anhand von Beispielen und Testfällen wird die Funktionsweise des erstellten Konzepts und seiner Realisierung verdeutlicht.

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LEMOS, MELISSA. "WORKFLOW FOR BIOINFORMATICS". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5928@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Os projetos para estudo de genomas partem de uma fase de sequenciamento onde são gerados em laboratório dados brutos, ou seja, sequências de DNA sem significado biológico. As sequências de DNA possuem códigos responsáveis pela produção de proteínas e RNAs, enquanto que as proteínas participam de todos os fenômenos biológicos, como a replicação celular, produção de energia, defesa imunológica, contração muscular, atividade neurológica e reprodução. As sequências de DNA, RNA e proteínas são chamadas nesta tese de biossequências. Porém, o grande desafio destes projetos consiste em analisar essas biossequências, e obter informações biologicamente relevantes. Durante a fase de análise, os pesquisadores usam diversas ferramentas, programas de computador, e um grande volume de informações armazenadas em fontes de dados de Biologia Molecular. O crescente volume e a distribuição das fontes de dados e a implementação de novos processos em Bioinformática facilitaram enormemente a fase de análise, porém criaram uma demanda por ferramentas e sistemas semi-automáticos para lidar com tal volume e complexidade. Neste cenário, esta tese aborda o uso de workflows para compor processos de Bioinformática, facilitando a fase de análise. Inicialmente apresenta uma ontologia modelando processos e dados comumente utilizados em Bioinformática. Esta ontologia foi derivada de um estudo cuidadoso, resumido na tese, das principais tarefas feitas pelos pesquisadores em Bioinformática. Em seguida, a tese propõe um framework para um sistema de gerência de análises em biossequências, composto por dois sub-sistemas. O primeiro é um sistema de gerência de workflows de Bioinformática, que auxilia os pesquisadores na definição, validação, otimização e execução de workflows necessários para se realizar as análises. O segundo é um sistema de gerência de dados em Bioinformática, que trata do armazenamento e da manipulação dos dados envolvidos nestas análises. O framework inclui um gerente de ontologias, armazenando ontologias para Bioinformática, nos moldes da apresentada anteriormente. Por fim, a tese descreve instanciações do framework para três tipos de ambiente de trabalho comumente encontrados e sugestivamente chamados de ambiente pessoal, ambiente de laboratório e ambiente de comunidade. Para cada um destes ambientes, a tese discute em detalhe os aspectos particulares da execução e otimização de workflows.
Genome projects usually start with a sequencing phase, where experimental data, usually DNA sequences, is generated, without any biological interpretation. DNA sequences have codes which are responsible for the production of protein and RNA sequences, while protein sequences participate in all biological phenomena, such as cell replication, energy production, immunological defense, muscular contraction, neurological activity and reproduction. DNA, RNA and protein sequences are called biosequences in this thesis. The fundamental challenge researchers face lies exactly in analyzing these sequences to derive information that is biologically relevant. During the analysis phase, researchers use a variety of analysis programs and access large data sources holding Molecular Biology data. The growing number of Bioinformatics data sources and analysis programs indeed enormously facilitated the analysis phase. However, it creates a demand for systems that facilitate using such computational resources. Given this scenario, this thesis addresses the use of workflows to compose Bioinformatics analysis programs that access data sources, thereby facilitating the analysis phase. An ontology modeling the analysis program and data sources commonly used in Bioinformatics is first described. This ontology is derived from a careful study, also summarized in the thesis, of the computational resources researchers in Bioinformatics presently use. A framework for biosequence analysis management systems is next described. The system is divided into two major components. The first component is a Bioinformatics workflow management system that helps researchers define, validate, optimize and run workflows combining Bioinformatics analysis programs. The second component is a Bioinformatics data management system that helps researchers manage large volumes of Bioinformatics data. The framework includes an ontology manager that stores Bioinformatics ontologies, such as that previously described. Lastly, instantiations for the Bioinformatics workflow management system framework are described. The instantiations cover three types of working environments commonly found and suggestively called personal environment, laboratory environment and community environment. For each of these instantiations, aspects related to workflow optimization and execution are carefully discussed.

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VIEIRA, TATIANA ALMEIDA SOUZA COELHO. "FLEXIBLE WORKFLOW EXECUTION". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7738@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Sistemas de gerência de workflow geralmente interpretam rigidamente a definição um workflow, não permitindo qualquer tipo de desvio durante a execução. No entanto, existem situaçãoes reais em que usuários devem poder desviar do fluxo pré-definido por diversas razãoes, incluindo falta de informação do valor de um parâmetro e indisponibilidade de recursos necessários á execução. Para alcançar execução flexível, esta tese propõe um mecanismo de tratamento de exceções, voltado para flexibilização, que permite a continuação da execução de uma instância quando antes ela deveria ser momentaneamente interrompida. A proposta concretiza-se como um conjunto de extensões a OWL-S, a linguagem adotada para a definição de workflows, e baseia-se em ontologias de processos e recursos, que oferecem a informação semântica necessária para o funcionamento do mecanismo. A tese apresenta ainda uma semântica operacional para um fragmento de OWL-S e para as extensões propostas, bem como uma arquitetura distribuída para um sistema de gerência de workflows. Em particular, a semântica proporciona uma forma de comportamento transacional para a execução de uma instância de workflow, no sentido de garantir que ou todas as ações da instância terminam corretamente, ou todas são abandonadas.
Workflow management systems usually interpret a workflow definition rigidly, allowing no deviations during execution. However, there are real life situations where users should be allowed to deviate from the prescribed static workflow definition for various reasons, including lack of information about parameter values and unavailability of the required resources. To flexibilize workflow execution, this thesis proposes an exception handling mechanism that allows the execution to proceed when otherwise it would have been stopped. The proposal is introduced as a set of extensions to OWL-S, the language adopted to define workflows, and is based on process and resource ontologies that capture the semantic information needed for the flexibilization mechanism. The thesis also defines an operational semantics for a fragment of OWL-S and the proposed extensions, as well as a distributed architecture for a workflow management system. In particular, the semantics define a form of transactional behavior for the execution of a workflow instance, in the sense that it guarantees that either all actions executed by the instance terminate correctly or they are all abandoned.

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Ottensooser, Avner B. "Dynamic Workflow-Engine". Thesis, The University of Sydney, 2011. http://hdl.handle.net/2123/8120.

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We present and assess the novel thesis that a language commonly accepted for requirement elicitation is worth using for configuration of business process automation systems. We suggest that Cockburn's well accepted requirements elicitation language - the written use case language, with a few extensions, ought to be used as a workflow modelling language. We evaluate our thesis by studying in detail an industrial implementation of a workflow engine whose workflow modelling language is our extended written use case language; by surveying the variety of business processes that can be expressed by our extended written use case language; and by empirically assessing the readability of our extended written use case language. Our contribution is sixfold: (i) an architecture with which a workflow engine whose workflow modelling language is an extended written use case language can be built, configured, used and monitored; (ii) a detailed study of an industrial implementation of use case oriented workflow engine; (iii) assessment of the expressive power of the extended written use case language which is based on a known pattern catalogue; (iv) another assessments of the expressive power of the extended written use case language which is based on an equivalence to a formal model that is known to be expressive; (v) an empirical evaluation in industrial context of the readability of our extended written use case language in comparison to the readability of the incumbent graphical languages; and (vi) reflections upon the state of the art, methodologies, our results, and opportunities for further research. Our conclusions are that a workflow engine whose workflow modelling language is an extended written use case language can be built, configured, used and monitored; that in an environment that calls upon an extended written use case language as a workflow modelling language, the transition between the modelling and verification state, enactment state, and monitoring state is dynamic; that a use case oriented workflow engine was implemented in industrial settings and that the approach was well accepted by management, workflow configuration officers and workflow participants alike; that the extended written use case language is quite expressive, as much as the incumbent graphical languages; and that in industrial context an extended written use case language is an efficient communication device amongst stakeholders.

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Bitzer, Sharon Marie. "Workflow reengineering : a methodology for business process reengineering with workflow management technology /". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA304322.

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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, September 1995.
Thesis advisor(s): Magdi Kamel, James C. Emery. "September 1995." Bibliography: p. 187-191. Also available online.

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11

Reif, Michael. "Erweitertes Workflow-Management : ein Ansatz zur Unterstützung des Prozessmanagements in Workflow-Anwendungen /". Berlin : Logos-Verl, 2003. http://www.gbv.de/dms/zbw/366412620.pdf.

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Chaturvedi, Jyoti. "A Workflow Visual Modeler and Its Interface to Existing Workflow Management Systems". UNF Digital Commons, 2008. http://digitalcommons.unf.edu/etd/187.

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The rapid growth and complexity of today's businesses have created a need for business process management approaches that will promote the efficient functioning of these organizations. Users of business process management tools greatly benefit from using visual process modeling capabilities. Cross-business interaction sets forth the need for standardization of notations in designing these models. The goal of this thesis is to study state of the art business process management notations and state of the art diagramming frameworks associated with building a Visual Modeler that can be easily integrated with existing workflow management systems. This thesis presents a Visual Modeler that has been created based on the research findings. Two case studies are presented, which show how the modeler has been effectively integrated as part of two completely different workflow management systems.

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Canturk, Deniz. "Time-based Workflow Mining". Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606149/index.pdf.

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Contemporary workflow management systems are driven by explicit process models, i.e., a completely specified workflow design is required in order to enact a given workflow process. Creating a workflow design is a complicated time-consuming process and typically there are discrepancies between the actual workflow processes and the processes as perceived by the management. Therefore, new techniques for discovering workflow models have been required. Starting point for such techniques are so-called &ldquo
workflow logs"
containing information about the workflow process as it is actually being executed. In this thesis, new mining technique based on time information is proposed. It is assumed that events in workflow logs bear timestamps. This information is used in to determine task orders and control flows between tasks. With this new algorithm, basic workflow structures, sequential, parallel, alternative and iterative (i.e., loops) routing, and advance workflow structure or-join can be mined. While mining the workflow structures, this algorithm also handles the noise problem.

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Wright, Benedict [Verfasser], i Bernhard [Akademischer Betreuer] Nebel. "Workflow generation with planning". Freiburg : Universität, 2019. http://d-nb.info/1196006121/34.

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Šich, Jan. "Analýza využití workflow produktů". Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-162668.

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The thesis is focused on workflow processes and systems for their design and management. It tries to show readers more familiar way with the nature of these systems and features that should support. It tries to accomplish three goals. The first goal is to determine the criteria by which you can judge the quality of workflow management system. These criteria must be sorted by the importance of specific situations, which are designed weighting of the criteria and technique for their calculation. The second goal of this work is the selection of appropriate tools for testing and subsequent practical test, focusing on appointment criteria and metrics selected for their assessment. The third goal is the inclusion of a practical example of a real process design modifications to make it suitable for using of workflow system to increase its effectiveness. Selected process is the transfer of information between school studies and legal guardians of students by e-mail, prepared for Secondary school, Dubno. The thesis is splitted in two halves for achieving the objectives of the work.The first two chapters are about the theoretical introduce, what benefits can bring the use of workflow systems and what steps to take to be able to effectively and meaningfully utilized. These informations were used from the literature focused primarily on workflow and process management. The third chapter focuses on the practical part, where the selected studies focused on the evaluation criteria workflow systems, build a suitable combination of the current set of criteria and application to selected systems management workflow. In the last chapter of the thesis are processed informations obtained from employees of SOS and SOU Dubno and where is described the current state of that process, a proposal how to make it more effective with using workflow system. Contribution of this thesis is the first assess of the current state workflow on the market and, secondly, the possibility of its use to increase the efficiency of the administrative process SOS and SOU Dubno.

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Řihák, Jakub. "Automatizace digitalizačního workflow NTK". Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-197845.

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This diploma thesis is focused on the automatization of digitization workflow in the National Library of Technology, Prague, Czech Republic. This thesis examines possibilities of digitization processes automatization by means of scripts written in Perl programming language and Apache Ant build tool. The advantages and disadvantages of both solutions are analyzed as well as their suitability for automatization of digitization workflow. Based on the comparison of both solutions, the scripts in Perl programming language are selected as the most suitable solution for automatization of digitization workflow. The question whether Ant build tool could be used for the purpose of automatization of digitization workflow is also answered in this thesis. The Ant build tool could be used for the above-mentioned purpose. However, once the activities in the given process divert from the general scope of tasks provided by the Ant build tool, the complexity of the whole solution increases rapidly. This complexity is given by the necessity to use predefined tasks -- sets of functions which have to be combined to create a functional automatization script. Even though Ant is an extendable tool, it is necessary to understand the Java programming language in order to create a new Ant task successfully. On the other hand, the Perl programming language allows easier customization of the script for the purposes of automatization of digitization workflow. Also, the modularity of the Perl programming language makes it easier to create those scripts and modify, correct or develop them even further.

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Homik, Martin. "Ressourcenoptimierung von Workflow Problemen". [S.l. : s.n.], 2004. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11244175.

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Nardi, Alexandre Ricardo. "Uma arquitetura de baixo acoplamento para execução de padrões de controle de fluxo em grades". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-29052009-143125/.

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O uso de padrões de workflow para controle de fluxo em aplicações de e-Science resulta em maior produtividade por parte do cientista, permitindo que se concentre em sua área de especialização. Todavia, o uso de padrões de workflow para paralelização em grades permanece uma questão em aberto. Este texto apresenta uma arquitetura de baixo acoplamento e extensível, para permitir a execução de padrões com ou sem a presença de grade, de modo transparente ao cientista. Descreve também o Padrão Junção Combinada, que atende a diversos cenários de paralelização comumente encontrados em aplicações de e-Science. Com isso, espera-se auxiliar o trabalho do cientista, oferecendo maior flexibilidade na utilização de grades e na representação de cenários de paralelização.
The use of workflow control-flow patterns in e-Science applications results in productivity improvement, allowing the scientist to concentrate in his/her own research area. However, the use of workflow control-flow patterns for execution in grids remains an opened question. This work presents a loosely coupled and extensible architecture, allowing use of patterns with or without grids, transparently to the scientist. It also describes the Combined Join Pattern, compliant to parallelization scenarios, commonly found in e-Science applications. As a result, it is expected to help the scientist tasks, giving him or her greater flexibility in the grid usage and in representing parallelization scenarios.

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Saikali, Karim. "Flexibilité des Workflows par l'approche objet: 2FLOW, un framework pour Workflows flexibles". Ecully, Ecole centrale de Lyon, 2001. http://www.theses.fr/2001ECDL0001.

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La technologie du Workflow est née du besoin qu'ont les entreprises d'améliorer leurs performances, notamment grâce à une mâîtrise de l'information, une meilleure coopération des acteurs et une optimisation des processus opérationnels et métiers. Bien que la génération actuelle des systèmes Workflows atteint efficacement les objectifs qui leurs sont fixés, en termes de gestion de processus et de mise à disposition de l'information, ceux-ci souffrent d'un manque de flexibilité important, transformant les processus qu'ils prennent en charge en structures plus ou moins figées. La flexibilité des Workflows englobe deux aspects complémentaires: d'une part, la gestion des problèmes (appelés "exceptions") qui peuvent survenir en cours de réalisation des processus, et d'autre part, la réutilisation et la modification hors et en cours d'exécution des processus modélisés. On parle dans ce dernier cas d'adaptabilité du Workflow. Parmi les différentes approches existantes d'adaptation des Workflows, hors et en cours d'exécution des processus, celle dite par "métamodèle" associée au concept du Workflow Orienté Objet nous semblent être les mieux indiqués dans la recherche de solutions pour la mise en œuvre de la flexibilité. Nous les concrétisons sous la forme d'un framework objet, nommé 2FLOW qui introduit deux notions principales: la construction de workflows par assemblages de composants et surtout la possibilité d'adapter des workflows grâce à l'intégration des propriétés des objets au Workflow. Nous validons notre travail par une application dans la conception d'un workflow adaptable mis en ceuvre dans une plate-forme semi-automatique de recyclage, traitée par le projet RESTER PROPRE.

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Galler, Jürgen. "Vom Geschäftsprozessmodell zum Workflow-Modell /". Wiesbaden : Gabler, 1997. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=007805129&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Leong, Iok Fai. "Exception prediction in workflow management". Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2182876.

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Nichel, Valenzuela David Andrés. "Utilización de Workflow en SOA". Tesis, Universidad de Chile, 2007. http://www.repositorio.uchile.cl/handle/2250/104558.

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Sadiq, Shazia Wasim. "On dynamically changing workflow processes /". Online version, 2002. http://bibpurl.oclc.org/web/22261.

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Giannadakis, Nikolaos. "Enabling Cross-domain Workflow Reuse". Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503777.

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Curcin, Vasa`. "Workflow modelling for scientific processes". Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504975.

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Halatchev, M., i E. Közle. "Workflow-Management in virtuellen Unternehmen". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-208655.

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Procter, Sam. "Kinerja: a workflow execution environment". Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/13177.

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Master of Science
Department of Computing and Information Sciences
John Hatcliff
Like all businesses, clinical care groups and facilities are under a range of pressures to enhance the efficacy of their operations. Though there are a number of ways to go about these improvements, one exciting methodology involves the documentation and analysis of clinical workflows. Unfortunately, there is no industry standard tool which supports this, and many available workflow documentation technologies are not only proprietary, but technologically insufficient as well. Ideally, these workflows would be documented at a formal enough level to support their execution; this would allow the partial automation of documented clinical procedures. However, the difficulty involved in this automation effort is substantial: not only is there the irreducible complexity inherent to automation, but a number of the solutions presented so far layer on additional complication. To solve this, the author introduces Kinerja, a state-of-the-art execution environment for formally specified workflows. Operating on a subset of the academically and industrially proven workflow language YAWL, Kinerja allows for both human guided governance and computer guided verification of workflows, and allows for a seamless switching between modalities. Though the base of Kinerja is essentially an integrated framework allowing for considerable extensibility, a number of modules have already been developed to support the checking and executing of clinical workflows. One such module integrates symbolic execution which greatly optimizes the time and space necessary for a complete exploration of a workflow's state space.

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Mates, Vojtěch. "Dotazem řízené kontextově orientované workflow". Doctoral thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2016. http://www.nusl.cz/ntk/nusl-412572.

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Tato práce pojednává o návrhu architektury systému pro řízení podnikových procesů, který je schopen reagovat i na měnící se kontext již běžících procesů. Architektura systému je navržena tak, aby systém byl schopen měnit jednotlivé fragmenty procesů dle aktuálního kontextu. Tímto zajišťuje i řízení přeplánování procesu, při čemž využívá k rozhodování optimální varianty historická data po řízená vlastním během systému.

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Horáková, Eva. "Analýza workflow ve vybrané organizaci". Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-264268.

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The final thesis is focused on the topic of process management and its development in time. Business Process Management and workflow, are described in the thesis as well as its specification and classification. The paper compares these two concepts. The thesis also works with the methodology of ARIS and Balanced Scorecard which are applied in the selected process of the organization. The process is built on the BPMN notation which is also described in the thesis. The aim of the thesis is to examine and to analyze selected process of the organization with specific methodology, to specify potential problems in the process and to suggest possible solution.

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Zheng, Wei. "Explorations in grid workflow scheduling". Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/explorations-in-grid-workflow-scheduling(7766d1b8-8c6c-44da-8b5c-df45329fa3a5).html.

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Aiming at aggregating numerous distributed resources to provide immense computing power, Grid computing has emerged as a promising paradigm to run complex composite applications such as workflows. However, the inherent uncertainties of grid systems as well as the structural complexity of workflow applications make it extremely challenging to schedule workflows in an efficient way, regardless of whether the objective is to minimize execution time or meet specific user and/or system Quality of Service (QoS) requirements. For both these cases, this thesis considers scheduling problems motivated by grid uncertainties and advances the state-of-the-art by developing new techniques to address these problems.First, based on existing scheduling heuristics, a Monte-Carlo approach is developed to minimize the average makespan (i.e., the overall execution time) in the presence of task estimates exhibiting limited uncertainty in the form of (controlled) random behaviour. Next, a scenario where performance prediction is difficult to obtain and resource availability may vary over time, is considered. A low-cost efficient just-in-time heuristic is proposed to cope with grid uncertainties.After addressing these performance-driven scheduling problems, a QoS-driven problem, which considers not only the aforementioned uncertainties but also the uncertainty caused by queue-based scheduling, is examined. In order to tackle all these uncertainties, an integrated scheduling model consisting of three supportive techniques is developed. Extensive evaluation using simulation shows that the proposed techniques can achieve substantial improvements towards the ultimate goal of providing a good solution for QoS-driven workflow scheduling on the Grid.

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Bischoff, Georg Kersten Roland Vetter Thorsten. "Vergleich von BPEL-Workflow Modellierungstools". [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB12168119.

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Rembert, Aubrey Javar. "Automatic discovery of workflow models". Connect to online resource, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3315792.

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Kenworthy, Travis. "CAD-centric dynamic workflow creation /". Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd2897.pdf.

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Khemuka, Atul Ravi. "Workflow Modeling Using Finite Automata". [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000172.

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Ferrari, Marcelo José. "Desenvolvendo workflow com agentes móveis". Florianópolis, SC, 2001. http://repositorio.ufsc.br/xmlui/handle/123456789/80063.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.Programa de Pós-Graduação em Ciência da Computação
Made available in DSpace on 2012-10-18T10:06:02Z (GMT). No. of bitstreams: 0Bitstream added on 2014-09-25T22:04:48Z : No. of bitstreams: 1 181345.pdf: 2681776 bytes, checksum: f44f8babe2c2d25797b812d5882aed9a (MD5)
Workflow tem como um dos principais objetivos, minimizar o problema da coordenação do trabalho nos processos de negócios. O principal problema das atividades baseadas em processos é que não se tem controle total das atividades que devem ser executadas. Além disso, não se têm uma visão de quais informações estão sendo manipuladas por essas atividades em um dado instante e nem que as manipula. As técnicas de modelagem de Workflow devem ter como objetivo básico minimizar estes problemas. O objetivo básico deste trabalho consiste no desenvolvimento de um protótipo de um Workflow, utilizando agentes móveis para validar o modelo que será proposto construindo um protótipo de um Workflow que valide na prática os conceitos de agentes móveis e Workflow.

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Kenworthy, Travis L. "CAD-Centric Dynamic Workflow Generation". BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/1709.

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CAD systems are important design tools that enable the designer to conceptualize, visualize, analyze, and manufacture a design (Shahin 2008). Although high-end CAD systems provide several built-in design applications, the users of CAD often select various custom or proprietary non-CAD analyses that constrain, optimize, or evaluate their designs. An efficient method is needed to perform trade studies from within the CAD environment. Methods have been developed to meet the challenges associated with this need. The methods have been implemented in a program, called the Process Integrator, which resides in a CAD system and allows the user to perform trade studies on an assembly model from within the CAD environment. The Process Integrator allows the user to create a generic process configuration to link analyses with CAD assemblies for optimization. The generic configuration can then be run at any time, on any assembly that meets the configuration requirements. Test cases are presented in which the efficiency of the automated process is demonstrated. Results indicate that significant time savings can be achieved through the application of these methods.

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Vančura, Tomáš. "Nástroje pro automatizaci workflow procesů". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217485.

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The the thesis deals with tools for workflow processes automation. It describes in general what workflow is. It also briefly describes tools such as MS BizTalk Server, SAP NetWeaver, IBM WebSphere, ORACLE BPEL. The main part deals with Windows Workflow Foundation. This tool is decribed in detail together with its parts workflow runtime, workflow instances and workflow activities. One part of the thesis is a application, which uses all the possibilities of Windows Workflow Foundation.

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Pokorný, David. "Návrh workflow ve stavební firmě". Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2011. http://www.nusl.cz/ntk/nusl-222875.

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The thesis deals with workflow design and its implementation in a construction company. The current state of document management is becoming obsolete and insufficient. Thus the company´s board has approved the realization of workflow system. The aim of this thesis is therefore analysis of company´s related processes and design of a workflow model. In addition, the new model is required to be linked with present financial and managerial accounting systems and allow for future adjustments and modifications. Final output of this thesis consists of workflow process maps, risk assessment, budget and time plan of realization.

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BEZERRA, Fábio de Lima. "Um modelo de definição de processos para sistemas de workflow flexíveis". UNICAMP, 2003.

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Trabalho com suporte da CAPES.
This work presents a new model of process definition in workflow systems, the PDBC model. We also present a prototype of a workflow system whicli implements the PDBC model, the Tucupi server. The proposal of this new model is to allow flexibility in workflow systems. For this, we will use what we call partia! workflow, which is a partially deüned workflow whose complete definition is carried through during the execution of workflow. Partia! Workflow is deüned as a set of constraints and activities. Moreover, another way for a workflow system to get flexibility is through an exception handling mechanism. In this work we consider such mechanism through the use of overriden constraints, that is, constraints that can be violated in determined circumstances. For this we present the WRBAC, a model of access control for workflow systems, used to provide an adequate mechanism of violation of the overriden constraints used in the definition of a workflow.
Em domínios de aplicação como a área médica e engenharia de software os sistemas de workflow existentes são inadequados, pois a definição dos processos nesses sistemas é inflexível. No exemplo da área médica, ninguém sabe quais as ações devem ser tomadas durante a abordagem de um paciente, ou seja, ninguém conhece um processo de tratamento para paciente no instante em que ele é admitido no hospital. Portanto, uma nova forma de interação com os sistemas de workflow se faz necessário. Nesta nova forma de interação um usuário pergunta ao sistema o que deve ser feito para que uma atividade (atividade objetivo) seja executada. Por exemplo, para um médico realizar uma cirurgia em um paciente que procedimentos devem ser executados antes ou mesmo depois? Nesta nova abordagem, o sistema de workflow cumpre, além do papel de despachante de atividades aos usuários, como nos sistemas de workflow atuais, o papel de ajudante do usuário, pois indica ao usuário quais atividades executar antes e depois de executar uma atividade objetivo. Este trabalho apresenta um novo modelo de definição de processos em sistemas de workflow, o modelo PDBC. Apresentamos também um protótipo de um sistema de workflow que implementa o modelo PDBC, o servidor Tucupi. A proposta deste novo modelo é permitir que os sistemas de workflow manipulem workflows mais flexíveis. Para isso usaremos o que chamamos de workflow parcial, que é um workflow parcialmente definido cuja definição completa é realizada apenas durante a execução do workflow. O workflow parcial é definido como um conjunto de restrições e atividades. Outra maneira de se obter flexibilidade em sistemas de workflow é através de um mecanismo de tratamento de exceções adequado. Neste trabalho propomos um mecanismo de tratamento de exceções através do uso de restrições violáveis, ou seja, restrições que podem ser violadas em determinadas circunstâncias. Para isso apresentamos o WRBAC, um modelo de controle de acesso para sistemas de workflow, utilizado para provê um mecanismo adequado de sobrecarga das restrições utilizadas na definição de um processo.

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Meyer, Martin. "Einsatzmöglichkeiten und -grenzen von integrierten Workflow-Management-Systemen Darstellung auf Basis von SAP Business Workflow /". [Bern] : [s.n.], 1999. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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Ganzhorn, Björn. "Workflow-Management als Integrationsplattform : eine Analyse intra-inter-organisationaler Integrationsprozesse am Beispiel des SAP Business Workflow /". Hamburg : Kovac, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009259450&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Lehmann, Marek. "Data access in workflow management systems /". Berlin : Aka, 2006. http://aleph.unisg.ch/hsgscan/hm00172711.pdf.

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Biörnstad, Biörn Johan. "A workflow approach to stream processing". Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/view/eth:30739.

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Kronz, Andreas. "Verteiltes Workflow-Management : Konzepte und Architektur /". Lohmar ; Köln : Eul, 2003. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=010591283&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Rodríguez, García Ángel. "Workflow Management System in Java environment". Thesis, Kristianstad University College, School of Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-4407.

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This degree project deals with the study about the development of workflow applications in a Java programming environment and the developing of an application that manages a claim process. The structure of the report contains four main sections: introduction, theory, design and implementation.

In the introduction, all the background and basic information needed is described. The theoretical part explains the concepts related to the project needed for good understanding. During the design and implementation parts, all the processes of developing the application, the difficulties and solutions found are described. Finally in the last part the Conclusions of this project and the future investigations are shown.

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Lin, Donghui. "Modeling and Coordination in Interorganizational Workflow". 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/123823.

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Fernando, Tharidu. "WorkflowDSL: Scalable Workflow Execution with Provenance". Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215714.

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Scientific workflow systems enable scientists to perform large-scale data intensive scientific experiments using distributed computing resources. Due to the diversity of domains and complexity of technology, delivering a successful outcome efficiently requires collaboration between domain experts and technical experts. However, existing scientific workflow systems require a large investment of time to familiarise and adapt existing workflows. Thus, many scientific workflows are still being implemented by script based languages (such as Python and R) due to familiarity and extensive third party library support. In this thesis, we implement a framework that uses a domain specific language that enables domain experts to collaborate on fine-tuning workflows. Technical experts are able to use Python for task implementations. Moreover, the framework includes support for parallel execution without any specialized code. It also provides a provenance capturing framework that enables users to analyse past executions and retrieve complete lineage of any data item generated. Experiments which were performed using a real-world scientific workflow from the bioinformatics domain show that users were able to execute workflows efficiently while using our DSL for workflow composition and Python for task implementations. Moreover, we show that captured provenance can be useful for analysing past workflow executions.
Vetenskapliga arbetsflödessystem gör det möjligt för forskare att utföra storskaliga dataintensiva vetenskapliga experiment med hjälp av distribuerade datorresurser. På grund av mångfalden av domäner, och komplexitet i teknik, krävs samarbete mellan domänexperter och tekniska experter för att på ett effektivt sätt leverera en framgångsrik lösning. Befintliga vetenskapliga arbetsflödessystem kräver dock en stor investering i tid för att bekanta och anpassa befintliga arbetsflöden. Som ett resultat av detta implementeras många vetenskapliga arbetsflöden fortfarande av skriptbaserade språk (som Python och R) på grund av förtrogenhet och omfattande support från tredje part. I denna avhandling implementeras ett framework som använder ett domänsspecifikt språk som gör det möjligt för domänexperter att samarbeta med att finjustera arbetsflöden. Tekniska experter kan använda Python för att genomföra uppgifter. Dessutom innehåller ramverket stöd för parallell exekvering utan någon specialkod. Detta ger också ett ursprungsfångande framework som gör det möjligt för användare att analysera tidigare exekveringar och att hämta fullständiga härstamningar för samtliga genererade dataobjekt. Experiment som utfördes med hjälp av ett verkligt vetenskapligt arbetsflöde från bioinformatikdomänen visar att användarna effektivt kunde utföra arbetsflöden medan de använde en DSL för arbetsflödesammansättning och Python för uppdragsimplementationer. Dessutom visar vi hur fångade ursprung kan vara användbara för att analysera tidigare genomförda arbetsflödesexekveringar.

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Wittges, Holger. "Verbindung von Geschäftsprozessmodellierung und Workflow-Implementierung /". Wiesbaden : Dt. Univ.-Verl, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013112834&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA.

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Davids, Niko. "Workflow-Management in Produktentwicklungsprojekten der Investitionsgüterindustrie /". Hamburg : Techn. Univ. Hamburg-Harburg, Inst. für Produktionsmanagement und -technik, 2008. http://www.gbv.de/dms/ilmenau/toc/559684088.PDF.

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Chamley, Théo. "Improvement of a software development workflow". Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127855.

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Organizing the work Wow in a software development project is not an easy task. How is the work distributed? How is a coding policy enforced? How can one be sure of the quality of the code produced? Those are non-trivial questions whose answers usually lie in the use of several development tools and practices. Code reviewing and analysis as well as automatic building are, for instance, meant to improve the overall quality of a software project’s code. However, if those tools are not properly con Vgured and if the work Wow has not been thoroughly thought, they can be completely counter-productive. Based on the installation of a complete software development chain in a governmental institution (the french ANSSI), this document aims at giving a solution to some of the problems that can arise during such an installation.

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