The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
It is a big challenge to establish a dynamic access control model to secure applications in open and dynamic environment. The dynamic feature of an access control system is sometimes related with that of applications of open environment. This paper analyzes first the reason that causes the dynamic change of access control systems and then proposes a five-level access control architecture which describes...
The Web service composition is one of the most effective ways to combine the current net resources and realize the re-utilization and satisfy the personalized requirements, and the foundation of the composition is the Web service selection. Expounded the basic principle of genetic algorithm, and brought the genetic algorithm in the field of Web service selection, and transferred the problem of Web...
As an intelligent algorithm with the mechanism of positive feedback, the ant colony algorithm is useful in solving the optimal problem. Web service selection is the foundation of the Web service composition which is one of the most important ways to satisfy the users' personalized requirements. Firstly, analyzed the problem of Web service selection based on expounding the basic principle of ant colony...
The Web service composition is one of the most important ways to satisfy the users' personalized requirements and supply the high quality service for users, and the foundation of service composition is the selection of Web service. Firstly, expounded the basic principle of Ant Colony Algorithm and analyzed the model of Web service selection and brought the algorithm into the fields of Web service...
In this paper, Web Service composition completeness estimation problem (SCEP) was proposed so as to prognosticate whether services can be successfully composed ahead of time. To solve the problem, first of all, we proposed a three-level model for SCEP, and gave the mapping way between situation theory and BPEL4WS. In this way, we can take advantage of situation calculus to describe service composition...
Negotiation is a crucial stage of Web services interaction lifecycle, aiming at establishing a formal contract between a service provider and a consumer, to specify agreed terms on the service, particularly terms on non-functional aspects. This paper introduces a formal negotiation model for Web Services. The model employs fuzzy truth propositions to specify constraints attached to the service, and...
Traditional RBAC model describes a static access control policy. As the development of network application, such as Web services, access control faces many new challenges, one of which is that access control policies need to protect not only static resources but also dynamic ones that are encapsulated in a service. In order to capture the flexibility of application, we specify a fine-grained control...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.