Web services technologies are advancing fast and being extensively deployed in many di?
erent application environments. Web services based on the eXt-sible Markup Language …

In this paper, an underwater image enhancement method using quaternions is presented.
This work aims to improve color rendition and contrast of the objects, as if the scene has …

The internet provides the opportunity for many web-based systems to be developed for
specific business and service purposes. However, the support for this type of system is …

Existing Web service access control models focus on individual Web services, and do not
consider service composition. In composite services, a major issue is information flow …

Two main security issues in software as a service (SaaS) delivery model of cloud
environments are access control and privacy preserving in basic web services as well as …

Nowadays, web applications are popular targets for security attackers. Using specific
security mechanisms, we can prevent or detect a security attack on a web application, but …

Service cloud provides added value to customers by allowing them to compose services
from multiple providers. Most existing web service security models focus on the protection of …

Enforcing access control in composite services is essential in distributed multidomain
environment. Many advanced access control models have been developed to secure web …

An application based on the Service-Oriented Architecture (SOA) consists of an assembly of
services, which is referred to as a composite service. A composite service can be …

Ensuring secure information flow is a critical task for service composition in multi-domain
systems. Research in security-aware service composition provides some preliminary …