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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

A framework for grid-enabling scientific workflow systems : architecture and application case studies on interoperability and heterogeneity in support for grid workflow automation

Azam, Nabeel Adeem January 2010 (has links)
Since the early 2000s, Service Oriented Architectures (SOAs) have played a key role in the development of complex applications within a virtual organization (VO) context. Grids and workflows have emerged as vital technologies for addressing the (SOA) paradigm. Given the variety of Grid middleware, scientific workflow systems and Grid workflows available, bringing the two technologies together in a flexible, reusable and generalized way has been largely overlooked, particularly from a scientific end user perspective. The lack of domain focus in this area has led to a slow uptake of Grid technologies. This thesis aims to design a framework for Grid-enabling workflows, which identifies the essential technological components, how these components fit together in layered architecture and the interactions between them. To produce such a framework, this thesis first investigates the definition of a Grid-workflow architecture and mapping Grid functionality to workflow nodes, focusing on striking a balance between performance, usability and the Grid functionality supported. Next, it presents an examination of framework extensions for supporting various forms of Grid heterogeneity, essential for ii VO based collaboration. Given the complex nature of Grid technologies, the work presented here investigates abstracting Grid based workflows through high-level definitions and resolution using semantic technologies. Finally, this thesis presents a way to resolves abstract Grid workflows using semantic technologies and intelligent, autonomous agents. The frameworks presented in this thesis are tested and evaluated within the context of domain-based case studies defined in the SIMDAT, BRIDGE and ARGUGRID EU funded research projects.
2

A Framework for Grid-Enabling Scientific Workflow Systems. Architecture and application case studies on interoperability and heterogeneity in support for Grid workflow automation.

Azam, Nabeel A. January 2010 (has links)
Since the early 2000s, Service Oriented Architectures (SOAs) have played a key role in the development of complex applications within a virtual organization (VO) context. Grids and workflows have emerged as vital technologies for addressing the (SOA) paradigm. Given the variety of Grid middleware, scientific workflow systems and Grid workflows available, bringing the two technologies together in a flexible, reusable and generalized way has been largely overlooked, particularly from a scientific end user perspective. The lack of domain focus in this area has led to a slow uptake of Grid technologies. This thesis aims to design a framework for Grid-enabling workflows, which identifies the essential technological components, how these components fit together in layered architecture and the interactions between them. To produce such a framework, this thesis first investigates the definition of a Grid-workflow architecture and mapping Grid functionality to workflow nodes, focusing on striking a balance between performance, usability and the Grid functionality supported. Next, it presents an examination of framework extensions for supporting various forms of Grid heterogeneity, essential for ii VO based collaboration. Given the complex nature of Grid technologies, the work presented here investigates abstracting Grid based workflows through high-level definitions and resolution using semantic technologies. Finally, this thesis presents a way to resolves abstract Grid workflows using semantic technologies and intelligent, autonomous agents. The frameworks presented in this thesis are tested and evaluated within the context of domain-based case studies defined in the SIMDAT, BRIDGE and ARGUGRID EU funded research projects.
3

Support for Information Management in Virtual Organizations

Kalyan, Kosuri Naga Krishna, Yadav, B.B.Pavan Kumar January 2006 (has links)
Globalization and innovation are revolutionizing the higher education forcing to create new market trends.Different nations have their own pattern and framework of education in delivering the educational services.Educational institutions are also seeking different organizational and behavioural changes for their better future as they hunt for new financial resources, face new competition and seek greater prestige domestically and internationally. The coming future will decide which universities would survive the market trends, competition and expectations of the students (Clients). The survival-of-the-fittest paradigm framework plays a prominent role in ideas of how the higher education would be delivered to the students in future with the Instruction Technology and distance education. According to us the education trend has changed its phase of delivery of services form the management point of view to student’s point of view.Leading to delivery of educational service’s which would have more impact on student’s education, knowledge and experience within the institution. In our thesis we try to provide some information about how to support and manage the information in Virtual Organizations. We also explore the frameworks of the university and discussed a case study about the different ways of providing better support for information management resulting in delivery of best students driven services and unique facilities. We would be looking at the different aspects of the university work flows and procedures and gain an insight on the student’s expectation from the organization. This investigation would be helpful for the students to know what are the services they should expect from the universities and also helpful for management to know better the needs of the students and their needs and to develop a framework for proper execution of these services. / In an educational environment students should be the first priority. Trusting students is we feel the most important aspect of an educational institution also providing the best possible support to students.after being through the total framework of an organization and different Non- Functional requirements, we conclude that the primary task for better information management and service delivery in any organization is to get the better understanding of the requirements engineering. An organization should have clearly defined stakeholders who would be qualified and filled with commitment to manage their responsibilities with higher priority; also they have to take up the responsibilities for the students.So to achieve a balance among stakeholders there should be a proper negotiation and communication between the stakeholders. In order to achieve that there should be common set of defined rules (say services) through which they could correspond with each other. The stakeholder should be well equipped with the technical nature used to develop and maintain the system.In short the management is the key player in understanding and validating the system and determine whether or not the existing system/process is in control. The most powerful designs are always the result of a continuous process of simplification and refinement. The system could be validated by taking regular feedback from students by handing out a paper for evaluation at various occasions of the different courses. An online, end-of-course plus the experiences of students questions should be designed and should be made a part of students work to fill it in order to get their right perception on the system. These feedbacks could lead to proper student dialogue evaluation. Therefore, eventually controlling and smoothly managing the stakeholders and the services could provide efficient support for the information management in virtual organizations.BTH has the staffs who are concerned about student problems but there is no person responsible for the students whom the students could approach. So BTH should have defined stakeholders who are responsible for the students and to whom the students could approach with their difficulties and problems. The university should show the students that they care for them, this is only possible by the university to go an extra mile for the sake of students and providing better facilities and future prospects for the students. / Kosuri Naga Krishna Kalyan C/O Achanta Srinivas Kungsmarksvagen 69-1412 Karlskrona 37144 Sweden Phone::0046-0704521463 B.B.Pavan Kumar Yadav C/O Achanta Srinivas Kungsmarksvagen 69-1412 Karlskrona 37144 Sweden Phone:0046-0737726964
4

Role-based Access Control for the Open Grid Services Architecture – Data Access and Integration (OGSA-DAI)

Pereira, Anil L. 12 June 2007 (has links)
No description available.

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