Wyniki wyszukiwania - BazTech

1

An analysis of methods for sharing an electronic platform of public administration services using cloud computing and service oriented architecture

Hamiga M., Jarząb M.

Computer Science

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2012

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Vol. 13 (4)

115-132

EN

This paper presents a case study on how to design and implement a public administration services platforms, using the SOA paradigm and cloud model for sharing among citizens belonging to particular districts and provinces, providing tight integration with an existing ePUAP system. The basic requirements, architecture and implementation of the platform are all discussed. Practical evaluation of the solution is elaborated using real-case scenario of the Business Process Management related activities.

2

Virtualization of Grid Networking Resources for Computation Mobility Support

Jarząb M., Kosiński J., Zieliński K.

Computational Methods in Science and Technology

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2010

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Vol. spec. iss. (1)

35-44

EN

The paper analyses Grid networking resource virtualization technologies and requirements in the context of computational mobility. The mechanisms of network virtualization supported by Xen and xVM/Crossbow are presented and compared. A network virtualization model, consisting of three layers, is presented. Changes in virtual network infrastructures resulting from VM or zone mobility are investigated in detail. Typical migration process scenarios are presented, in addition to system commands used prior to and following migration in order to restore network communication. The concept of automating this process is also described.

3

Techniques to improve scalability and performance of J2EE-based applications

Jarząb M., Kosiński J., Zieliński K.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2004

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Vol. 8, No 4

453-470

EN

This paper reports research on improvement techniques of scalability and performance of Java 2 Platform, Enterprise Edition, (JEE) based applications. The study deals with operating systems and Java Virtual Machine (JVM) tuning, the setting of Enterprise Java Beans (EJB) Application Servers' configuration parameters and clustering methods. The theoretical principles of achieving high performance and scalability of JEE Applications are considered. The experimental environment and scenarios are described. The experimental results of the considered techniques' evaluation are presented and analyzed.