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.
The paper addresses the problem of maintaining the quality of service (QoS) of an orchestration of Web services (WS), which can be affected by exogenous events (i.e., faults). The main challenge in dealing with this problem is that typically the service where a failure is detected is not the one where a fault has occurred: faults have cascade effects on the whole orchestration of services. The paper...
The emergence of Web 2.0 and its related technologies such as HTML5 has empowered the end users and made it possible for them to compose their own Web applications. Yet, most of the current development has mainly concentrated on the support of the composition of enterprise-oriented services and scientific workflows, with not enough effort made to support the composition of end user-oriented services...
In the constantly evolving smart building context, an important aspect to address is devices and applications interoperability. The FCINT project provides a service-oriented management framework for smart building facilities through the use of ontologies, intelligent controllers and a Web-based portal. The alarms system presented in this paper is part of the effort to provide a proper framework for...
Remote vehicle monitoring system keeps track of vehicle and also monitor the fleet level of the vehicle status. Here two problems are dealt with. First one is the anywhere any time monitoring of the vehicle status cannot be done through manual monitoring and the second one is the system behavior change according to user changes. The novelty of the proposed approach is twofold. First our proposal allows...
This paper presents a characterization of Amazon's Web Services (AWS), the most prominent cloud provider that offers computing, storage, and content delivery platforms. Leveraging passive measurements, we explore the EC2, S3 and CloudFront AWS services to unveil their infrastructure, the pervasiveness of content they host, and their traffic allocation policies. Measurements reveal that most of the...
This paper proposes DSHA, a dynamic self-healing approach to handle exceptions and failures in composite services processes. DSHA will choose the optimal exception handling strategy when exceptions arise during the composite services process execution. DSHA meets the functional requirements of self-healing for composite service failures, and it also better satisfies the process time constraint of...
Trust is one of the most critical factors for a service requestor when selecting the best one from a large pool of services. However, existing web service trust models either do not focus on satisfying customer's preference for different quality of service (QoS) attributes, or do not pay enough attention to the impact of malicious ratings on trust evaluation. To address these gaps, a dynamic trust...
Web service techniques are presented herein for supporting a cloud energy-saving and case-based reasoning information agent. Not only can it explore related technologies to establish a Web service platform, but it can also study how to construct cloud interactive diagrams to employ Web service techniques for extensively and seamlessly integrating energy-saving and a case-based reasoning information...
Quality of experience of web services is negatively influenced by system delays. To quantify delay and resulting user satisfaction quality evaluation experiments are used, but they typically disregards users' tasks and content of the website as a part of the assessment procedure. The goal of this study is to explore impact of a user's task, information presentation such as per-element load durations...
Developers often rely on penetration testing tools to detect vulnerabilities in web services, although frequently without really knowing their effectiveness. In fact, the lack of information on the internal state of the tested services and the complexity and variability of the responses analyzed, limits the effectiveness of such technique, highlighting the importance of evaluating and improving existing...
The adoption of Service Oriented Architectures (SOAs) in a wide range of organizations, including business-critical systems, opens the door to new security challenges. Although the services used should be secure and reliable, they are often deployed with security bugs that can be maliciously exploited. The problem is that developers are frequently not specialized on security and the common time-to-market...
As composition consists of different Web Services invocations, when one component service fails, composite Web Service will not operate appropriately. The easy solution to this problem is to reselect the service every time service fails. However, it is not feasible due to the high complexity of the reselection, which will interrupt the execution of composite service, lead to an extra delay and influence...
An Service Level Agreement (SLA) is a contract between service provider and consumer, and includes appropriate actions to be taken upon violation of the contractual obligations. To ensure the negotiation on an SLA is reasonable by reference the measured history data. The paper proposes a feasible Web Service Level Agreement (WS-SLA) Establishing Framework, which can flexible define trustable SLA requirements...
The electricity grid is undergoing significant changes as it paves its way towards a smarter grid. New technologies provide a much clearer view on the electricity grid and its processes, mainly due to the fine-grained and near real-time acquisition of data as well as assessment of it. The huge amount of information will include additional technical data beyond the traditional metering information...
The emerging infrastructure of the Smart Grid, and the multitude of the new energy services it will offer, is expected to radically affect business relationships among its stakeholders. Beyond enhancements in existing processes, innovative approaches will be made possible by relying on a fine-grained monitoring and control capabilities over modern informationcentric infrastructure. Traditional infrastructure...
The price and size reduction of computational devices have increased the number of areas where human-operated equipments are replaced by autonomous and autoconfigurable devices. The IP protocol has taken place in industrial and home automation, specially in wireless applications. It allows applications to use interoperable communication strategies commonly used in the computer networks as the Web...
This paper presents two implementations of condition monitoring of significant information in a typical machine utilized in the pulp and paper industry, a circuit oil lubrication system. The two discussed alternatives confront a traditional centralized monitoring approach against a Web Service based approach. Advantages and disadvantages of one choice over the other are considered. Both solutions...
Web services are widely known as the building blocks of typical service oriented applications. The performance of such an application system is mainly dependent on that of component web services. Thus the effective load testing of web services is of great importance to understand and improve the performance of a service oriented system. However, existing Web Service load testing tools ignore the real...
Wireless sensor networks (WSNs) belong to emerging technologies where network devices can interact with the surrounding environment by sensing physical parameters. Recently, with the dissemination of mobile devices to Internet connectivity, users can interact with sensor networks and collect environmental data, anytime, anywhere using user-friendly mobile applications. Following the Internet of Things...
Service composition is an important means for integrating the individual Web services to create new value added systems that can satisfy complex requirements. However, it is a challenge to enforce fault diagnosis mechanism for those applications due to the uncertainty of service quality in distributive and heterogeneous environment. In this paper, a Byzantine fault diagnosis method for service composition...
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.