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Ubiquitous Learning changing the existing paradigm of learning that is a learning process everywhere, every time and anything into the learning process right place, right time and the right thing, so that the determination of the appropriate content for the user and the system's ability to adapt to the user is important in ubiquitous learning. Context aware in ubiquitous learning can be used to achieve...
In present network, bandwidth is valuable resource that limits the enlargement and speed up of communication. Hardware price drops as nearly line speed while long distance transmit price stays stable for years. This trend directs the future network to exchange computation and storage with bandwidth. Service-Oriented Future Internet Architecture proposes to add computation and storage ability to service...
The goal of service composition is to create value-added services which automatically composed of exiting services based on dynamic user requirements. Most research on service composition is based on logical reasoning, and do not consider dynamic services requirements and network status. In this paper we present a novel resource-oriented algorithm. The resource-oriented algorithm integrates service...
Web services provide a standard interaction interface for network-based services. With so many diverse web services available over the Internet, services can be composed together and delivered to users as a package. The way to combine services is still an open problem, especially considering users' preferences. Users always have vague opinions on these preferences when they choose component services...
Defenses against Distributed Denial-of-Service (DDoS) attacks are commercially available and deployed by Internet Service Providers (ISPs) at the network and transport layers. However, attackers increasingly target vulnerabilities at the application layer. Launched from bots, these attacks seek to exhaust server resources, such as CPU and disk bandwidth. Because these attacks use normal-looking requests,...
Ubiquitous computing platform enables interactions among users, applications, and services through wireless devices. People nowadays always connect to the Internet while moving. Although portable device can provide high-speed connectivity, a user may move in areas with weak signal or thin bandwidth. In this paper, a ubiquitous computing platform is designed for quality control of multimedia and data...
Surfing the Web is a practical task that is being used in activities that range from bank transactions to entertainment. Web technology is advancing in order to provide its users with better quality and advanced features. Based on networking parameters, Internet Service Providers (ISPs) want to ensure better Quality of Service for their customers. However, a question arises concerning the assessment...
Grid and cloud schedulers benefit from predictable service for their choices in allocating jobs on remote servers/clusters. Predictable service on local clusters supports fairness and user satisfaction. The paper looks into servers that employ batch scheduling and support time sharing and/or space partitioning of the available resources among different parallel-job workloads. This provides the basis...
This paper researches on QoS (Quality of Service) control problems for web servers. A Fuzzy Adaptive PI Control system is proposed in this paper. Via a basic PI controller, the system can dynamically adjust the ratio of request-accepting time in a control period, in order to turn down requests when the server is overloaded. Considering that in a real Internet environment, the network and server load...
With the increase of the number of web services on the Internet, QoS driven service selection as an important way to satisfy user's constraint on quality and maintain the runtime performance of services, has received much attention. The existing QoS driven service selection approaches always assume that the estimated QoS data is effective and trustworthy, which is actually impossible in reality. This...
Providing mobile services that ensure user satisfaction is one of the most crucial issues for telecommunication carriers and service providers. Traditionally, user satisfaction with the service, i.e., the Quality of Experience (QoE), has been assessed in a laboratory. However, a reliable QoE for a target mobile service in the context of actual use cannot be obtained by laboratory experiment. This...
In this paper, we present our analysis of resource scheduling to achieve SLA-aware profit optimization in cloud services. This work is part of a real system called Intelligent Cloud Database Coordinator (ICDC), which is being built at the NEC Labs to manage very large cloud service delivery infrastructures. As we present in our performance evaluation, the analysis shows that the choice of resource...
In this paper we discuss the design and experimental evaluation of a middleware architecture that enables Service Level Agreement (SLA)-driven dynamic configuration, management and optimization of cloud resources and services. This architecture has been designed in order to respond effectively to the Quality of Service (QoS) requirements of the cloud customer applications. Typically, an application...
The idea of the future Internet of Services is to combine several services of numerous service providers to new value-added services or applications. To sell these services on so-called service marketplaces the providers have to ensure both a high quality and a high quality reliability. But how could a provider of a composed service know the quality-reliability of his service without costly tests?...
Broad network bandwidth and deep inspection impose great challenge for the capability of 10Gpbs network security monitoring. Proper scheduling policies can improve system capability without requiring additional resources. LAS, a size-based scheduling policy which can achieve optimal mean response time by giving preferential analysis to short flows, is widely used in various aspects of network field...
In Cloud computing, users with different service requirements often need to negotiate with service provider via Service Level Agreement (SLA). The unique pay-as-you-go billing way in Cloud computing challenges resource provisioning for service providers. In this paper, based on the Dirichlet multinomial model, we present an efficient reputation-based QoS provisioning scheme, which can minimize the...
With the increasing numbers of Web services and service users on World Wide Web, predicting QoS (Quality of Service) for users will greatly aid service selection and discovery. Due to the different backgrounds and experiences of users, they have different QoS experiences when interacting with the same service. Even two users who have similar experiences on some services can have diverging views when...
In this paper, we have designed and implemented a kernel-level Web-based QoS (WQoS) mechanism that could efficiently support differentiated services when serving multiple diverse types of Web requests in a cluster-based Web server system. Our mechanism is implemented at kernel level to effectively reduce the number of protection domain switches and data copying between kernel space and user space...
In this paper, we propose a Sarsa(λ) algorithm based online self-optimizing QoS control framework in the middleware layer to solve the differentiated average response time control problem in distributed services. Compared to other existing solutions, the proposed controller can learn control policy autonomously without the need of explicit domain expert knowledge to optimize the controller manually...
Service-oriented architecture constitute a key technology for providing interoperability among heterogeneous systems, and integrating inter-organization applications in a loosely coupled fashion. However, the rapid growth of Web Services on the Internet makes services discovery become harder. Quality of Service is the key factor to differentiate web services with same functionality. In order to distinguish...
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