Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lijun Wang Xiaoying Bai Lizhu Zhou Yinong Chen |
| Copyright Year | 2009 |
| Abstract | Service-Oriented Architecture (SOA) introduces a new paradigm where data, service, and the service composition logic are decoupled in an open environment. Software systems are built and evolved online by dynamic discovering and binding to the open services accessible through standard protocols. It requires new reliability modeling techniques to facilitate the analysis of dynamic collaborations and to be adaptable to the changes of service composition and system configuration at runtime. The paper proposes a hierarchical reliability model, in which the system reliability is calculated according to the layered superimposition of the reliabilities of data, services, fault-tolerant mechanism and service composition logic. At the basic-service layer, the service reliability is considered in the context of data reliability and service pools with backup alternatives. At the composition layer, a DTMC (Discrete Time Markov Chain) model is created for analyzing system reliability based on the reliability of the constituent services and their execution rate which are decided by the composite control structure and the operation scenarios. The DTMC state transition diagram can be automatically generated by analyzing and transforming the layered superimposition of the application following the transformation rules. The hierarchical modeling framework enables change adaptation at various levels. In addition, the models can be continuously learned and dynamically adjusted by profiling on the runtime monitoring log files. |
| Starting Page | 199 |
| Ending Page | 208 |
| File Size | 468278 |
| Page Count | 10 |
| File Format | |
| ISBN | 9780769537269 |
| ISSN | 07303157 |
| DOI | 10.1109/COMPSAC.2009.34 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-07-20 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Software systems Service oriented architecture Logic Reliability Software standards Access protocols Collaboration Fault tolerant systems Context-aware services Automatic control markov chain software reliability service-oriented architecture reliability model service pool |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science Applications Software |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|