Service Oriented applications are becoming very popular due to ease of Web services Usage. The area of Web Service Discovery (WSD) is a primary area of research today. It has fundamental importance in web services utilization for personal or organizational needs. However the users of web service are yet facing challenges to find the desired web service due to rapid growth of web services available on internet. There is a need of a strategy to locate web services with issues covering like performance, flexibility and reliability across multiple heterogeneous registries, which is a challenging task yet. Our proposed framework covers these issues; it actively obtains user required web service by crawling among different repositories. Google Custom Search API is used for this purpose. Verification and validation checks are performed to confirm that the retrieved document is a web service and is currently available.
The use of web services has dominated software industry. Existing technologies of web services are extended to give value added customized services to customers through composition. Automated web service composition is a very challenging task. This research proposed the solution of existing problems and presented a technique by combination of interface based and functionality based rules. The proposed framework also solves the issues related to unavailability of updated information and inaccessibility of web services from repository/databases due to any fault/failure. It provides updated information problem by adding aging factor in repository/WSDB (Web Services Database) and inaccessibility is solved by replication of WSDB. We discussed data distribution techniques and proposed our framework by using one of these strategies by considering quality of service issues. Finally, our algorithm eliminates the dynamic service composition and execution issues, supports web service composition considering QoS (Quality of Service), efficient data retrieval and updation, fast service distribution and fault tolerance.
Service-Oriented Architecture has emerged as an architectural style to foster enterprise interoperability, as it claims to facilitate the flexible composition of loosely-coupled enterprise applications and thus alleviates the heterogeneity problem among enterprises. Meanwhile, Model-Driven Architecture aims at facilitating the development of distributed application functionality, independent from its implementation using a specific technology platform and thus contributes to deployment in different platforms. This book discusses the usability of using model-driven transformation techniques to service composition by transforming service choreography to a set of service orchestration(s). As a proof-of-concept, the book presents the transformation from Web Service Choreography Description Language to Web Service Business Process Execution Language using model-driven transformation techniques. The proof-of-concept shows that the service composition process can be accelerated by using model-driven transformation techniques.
RSS is a family of web feed formats used to publish frequently updated works and delivers its information as an XML file called an RSS feed. RSS feeds can be read using software called "aggregator", which can be web-based and desktop-based. Web Based RSS Aggregator is a popular service which surpasses the need of desktop RSS Aggregator. It is a highly dynamic web service. Dynamic web services need high performance and customer satisfaction maintaining large data sets. A solemn competition is running between the web service providers. This thesis paper focused to optimize the performance challenges faced by a Web based RSS Aggregator company pageflakes which already become first in this arena beating Google, Microsoft, and Yahoo etc. In our work, different Web Based RSS Aggregators have been investigated and their features and architecture have been compared to get a clear perception of their services and existing challenges. Some existing technologies of web services have been examined and ways to effectively using those have been proposed. The proposal was implemented in smaller scale and effectiveness of those has been proved statistically.
The World Wide Web is an interlinked collection of billions of documents formatted using HTML. Due to the growing and dynamic nature of the web, it has become a challenge to traverse all URLs in the web documents and handle these URLs, so it has become imperative to parallelize a crawling process. The crawler process is further being parallelized in the form ecology of crawler workers that parallely download information from the web. This paper proposes a novel architecture of parallel crawler, which is based on domain specific crawling, makes crawling task more effective, scalable and load-sharing among the different crawlers which parallel download web pages related to different domains specific URLs.
E-commerce is a new form of trade that takes increasingly importance in various fields, such as tourism or transport. With the spread of the Internet, users become more demanding and want to express and get answers to more complex requests, including multiple functionalities, conditions, constraints and objectives. Most complex requests including multiple functionalities cannot usually be answered by one single Web service. As multiple services are needed, the problem is then to find good combinations using the available services but also to select the best ones according to user objectives expressed in the request. This book contributes to resolving this issue by focusing on the problem of semantic Web service composition and optimization to answer such requests. For the automatic design of service composition satisfying a request, we propose a new model for the representation of semantic Web service composition and an algorithm that builds compositions based on this model. This latter supports any kind of composition structure. To select the best compositions with a suitable method, the problem of composition optimization is defined according to the request complexity.
Recent advancement in web services plays an important role in business to business and business to consumer interaction. Discovery mechanism is not only used to find a suitable service but also provides collaboration between service providers and consumers by using standard protocols. This research has proposed an efficient dynamic web services discovery mechanism that can locate relevant and updated web services from service registries and repositories with timestamp. It is based on indexing value and categorization for faster and efficient discovery of service. The proposed prototype focuses on quality of service issues and introduces concept of local cache, categorization of services, indexing mechanism, CSP (Constraint Satisfaction Problem) solver, aging and usage of translator. Performance of proposed framework is evaluated by implementing the algorithm. The results of proposed framework show greater performance and accuracy in dynamic discovery mechanism of web services. It resolves the existing issues of flexibility and scalability based on quality of service. It discovers updated and most relevant services with ease of usage.
The detection of suitable services for solving a defined task, commonly referred to as Web service discovery, is regarded as the most important operation in service-oriented environments, since it is the prerequisite of the core technical benefit of SOA: reuse. With the current Web service technology stack, service discovery is limited to a syntactic keyword based search mechanism aided by a simple metadata service description taxonomy and browsing capabilities. In future service environments with already thousands of available services in local organizational infrastructures, much more sophisticated discovery techniques are required. The emerging concept of Semantic Web services (SWS) promises to address the deficiencies of today''s Web service technologies. The research on Semantic Web services concentrates on the development of inference based approaches to enhance the discovery, composition and execution of Web services towards a full-blown automated process.
Web services technology provides a platform on which we can develop distributed services. The interoperability among these services is achieved by various stan-dard protocols. In recent years, several researches suggested that process algebras provide a satisfactory assistance to the whole process of web services development. Business transactions, on the other hand, involve the coordination and interaction between multiple partners. With the emergence of web services, business trans-actions are conducted using these services. The coordination among the business processes is crucial, so is the handling of faults that can arise at any stage of a transaction. BPEL models the behavior of business process interaction by pro-viding a XML based grammar to describe the control logic required to coordinate the web services participating in a process ?ow. However, BPEL lacks a proper formal description where the composition of business processes cannot be formally veri?ed. Process algebra, on the other hand, facilitates a formal foundation for rigorous veri?cation of the composition. This report presents a comparison of web service composition between BPEL and process algebra, cCSP.
Service Oriented Opportunistic Sensor Networks (TOppS) project at the Swedish Defense Research Agency aims to offer user numbers of services from sensor networks. As non- technicians, end-user of TOppS would require a user-friendly GUI with the ability of manipulating the gathered web services to create new service which can meet their own demands. In this work, we designed and implemented a Web-based graphical workspace prototype called Service Composition Workspace (SCW) using Semantic Web technologies such as includes Web Ontology Language (OWL), Ontology Web Language for Services (OWL-S), etc. SCW offers not only the capability of dynamically composing Web services, but also the ability of outputting "machine-understandable" data, which can be directly processed by computer system without human intervention. The workspace also provides a drag & drop user interface for end-users to easily create and modify their own system configuration on-the-fly. The effectiveness and functionality of proposed model is evaluated by vast test cases.
This book is intended for use by customers using Google Classic Analytics and does not cover the newer Google Universal Analytics or related Google Tag Manager. Google Analytics is the free tool used by millions of web site owners to assess the effectiveness of their efforts. Its revised interface and new features will offer even more ways to increase the value of your web site, and this book will teach you how to use each one to best advantage. Featuring new content based on reader and client requests, the book helps you implement new methods and concepts, track social and mobile visitors, use the new multichannel funnel reporting features, understand which filters to use, and much more. Gets you up and running with all the new tools in the revamped Google Analytics, and includes content requested by readers and users especially for new GA users Covers social media analytics features, advanced segmentation displays, multi-dashboard configurations, and using Top 20 reports Provides a detailed best-practices implementation guide covering advanced topics, such as how to set up GA to track dynamic web pages, banners, outgoing links, and contact forms Includes case studies and demonstrates how to optimize pay-per-click accounts, integrate AdSense, work with new reports and reporting tools, use ad version testing, and more Make your web site a more effective business tool with the detailed information and advice about Google Analytics in Advanced Web Metrics with Google Analytics, 3nd Edition.
ASP.NET is a server-side Web application framework designed for Web development to produce dynamic Web pages. It was developed by Microsoft to allow programmers to build dynamic web sites and web applications. It was first released in January 2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft's Active Server Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported .NET language. In this book basic of Asp.Net is discussed
ASP.NET is a server-side Web application framework designed for Web development to produce dynamic Web pages. It was developed by Microsoft to allow programmers to build dynamic web sites and web applications. It was first released in January 2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft's Active Server Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported .NET language. In this book basic of Asp.Net is discussed.
With collaborative business processes, organizations can create dynamic and flexible collaborations to synergistically adapt to the changing conditions, and stay competitive in the global market. However, the development and management of organization’s IT infrastructures that can able to cope up with the requirements of dynamic business environments are challenging. Service-based approach can enhance the development and management of collaborative processes through service abstraction to satisfy the needs of today’s dynamic business environment. It uses service models to represent the requirements of continuously changing business needs through service abstraction and use platform independent interaction nature of web service and its enabling available technologies for implementation. Thus, this book thoroughly discusses the study of the state of the art of collaborative BPM development and the proposed generic framework to realize automatic conversion of service models into web services in order to support development of collaborative business process both at design and run-time independent of technologies used in each collaborating enterprises.
Web Services currently is the main enabling technique to realize Service Oriented Architecture (SOA). This book provides brief introduction to the conceptual Web services architecture and brings out potential research issues related to non-functional property based Web service selection and compositions. The author provides Quality of Service (QoS) and Service Offer based selection mechanisms for primitive and composite Web services. The book contains the various works carried out towards QoS aware Web service selection and compositions.
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