Since, most of the organizations present their services electronically, the number of functionally-equivalent web services is increasing as well as the number of users that employ those web services. Consequently, plenty of information is generated by the users and the web services that lead to the users be in trouble in finding their appropriate web services. Therefore, it is required to provi...

Selecting the most appropriate semantic web service is one of the important components of the semantic web service composition process. Most aspects of the Semantic Web Service (SWS) composition process such as automatic discovery, selection, and composition are tightly related to the quality of semantic web services (QoS). QoS can be defined as a part of service description and is an especiall...

  Response time is one of the critical web service quality dimensions. It refers to how long it takes that a web service responds to request of a user. In order to manage the response time, pricing schemes can work as an efficient access control mechanism. In this paper, we study competition between two providers offering functionally same web services where there is a monopoly service provider...

An important aspect for the acceptance of Service-Oriented Architectures is having convenient ways to help designers build secure applications. Numerous standards define ways to apply security in web services. However, these standards are rather complex and sometimes overlap, which makes them hard to use and may produce inconsistencies. Representing them as patterns makes them easier to underst...

An increasing need for security in SOA applications demands for better support for the management of security in Web-based business processes. Here, the model-driven process development may provide valuable opportunities in terms of maintainability and deployment. Besides modeling and then generating the pure functionality of a process, the consideration of security properties at the level of a...

Web services security has some crucial problems to be solved in building Grid applications. In particular the current implementations of message-level Web services security are very slow and therefore extremely vulnerable to even the simplest types of Denial of Service (DoS) attacks. The more advanced is the security mechanisms, the worse the performance and scalability of the whole system. On ...

This work is inspired by the intend to construct SOABased E-Government. We first emphasize the importance of taking measures for solving security problems facing Web Services, we then have an in-depth look at SOA-Based Web Services, including its architecture, underlying technologies, transmission model, and SOAP message. By leveraging the understanding of securing Web Services, we conclude tha...

The exorbitant growth in the field of web services technology has challenged the web developers, vendors and researchers to design and development a variety of enterprise web applications for diverse organizations. Since, security is considered to be an essential part in the development of web applications, web services security has also become an emerging trend in Web services technology. Even...

AnoNotify is a service for private, timely and low-cost online notifications. We present the design and security arguments behind AnoNotify, as well as an evaluation of its cost. AnoNotify is based on mixnetworks, Bloom filters and shards. We present a security definition and security proofs for AnoNotify. We then discuss a number of applications, including notifications for incoming messages i...

Web service is working with the web with an object or component to achieve the communication between the distributed applications and between the different platforms through a series of protocols. Web Service provides a set of standard types systems, rules, techniques and internet service-oriented applications for communication between the different platforms, different programming languages an...