The following topics are dealt with: information network; multimedia communication; multi-agent system; ad hoc network; real-time system; semantic based information retrieval; peer-to-peer communication; e-learning; c...
The following topics are dealt with: information network; multimedia communication; multi-agent system; ad hoc network; real-time system; semantic based information retrieval; peer-to-peer communication; e-learning; collaborative environment; multicast protocol; admission control; grid computing; sensor network; agent system; distributed system; security protocol; authentication protocol; routing algorithm; Web-based system; mobile system; cellular network; cryptography; search engine; traffic analysis; e-commerce.
Mobile agent computing is an increasingly important paradigm which presents interesting new security challenges. Among these are the protection of host against malicious agents and protecting agents against hosts that...
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Mobile agent computing is an increasingly important paradigm which presents interesting new security challenges. Among these are the protection of host against malicious agents and protecting agents against hosts that execute agents. Especially of interest is the use of mobile agents in e-commerce settings, in which users release autonomous agents to roam around virtual stores and find desired products. In this research we investigated several schemes for dealing with assuring mapplets secure computation in a possible hostile environment without the need of special firewall or intrusion detection safe hardware. In this investigation we focus on realistic schemes which are feasible to implement. The presented mobile computing scheme do not require that the foreign host to be totally trustworthy that provides the same assurance as if the computation was carried using a traditional secure client/server model. The presented dynamical scheme is based on distribution of the algorithm on different hosts and making use of that the transactions has shared secrets by using the (k, n) secret-sharing threshold scheme. One of the positive outcomes of the current scheme is that it is distributed denial of service resistant system. The current proposed scheme presents a novel study of the tradeoff between the security and communication in remote computation. This formal study allows us to take the first step toward understanding the problem, indicating the significance of the various cryptographic assumptions, and as a result of the development of improved remote mobile computation schemes.
With the spread of Machine-to-Machine (M2M) systems and cloud services, various kinds of data are available through Web services. A context-aware service recognizes a real-world context from such data and behaves auto...
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With the spread of Machine-to-Machine (M2M) systems and cloud services, various kinds of data are available through Web services. A context-aware service recognizes a real-world context from such data and behaves autonomously based on the context. However, it has been challenging to manage contexts and services defined on the heterogeneous and distributed Web services. In this paper, we propose a framework, called RuCAS, which systematically creates and manages context-aware service using various Web services (e.g. information services, sensor services, networked appliances, etc.). The framework describes every context-aware service by an ECA (Event-Condition-Action) rule. For this, an event is a context triggering the service, a condition is a set of contexts to be satisfied for execution, and the action is a set of Web services to be executed by the service. Thus, every context-aware service is simply managed in a uniform manner. Since the RuCAS is published as a Web service, it is easy for various applications to reuse and integrate created contexts and services. As a case study, RuCAS is applied to creating context-aware services in a real home network system.
Improvements in computer and networking technologies over the past decades produced new type of collaborative computing environment called grid networks. Grid is a parallel and distributedcomputing network system tha...
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Improvements in computer and networking technologies over the past decades produced new type of collaborative computing environment called grid networks. Grid is a parallel and distributedcomputing network system that provides the ability to perform higher throughput computing by taking advantage of many computing resources available in the network. Therefore, to achieve a scalable and reliable grid network system, we need to efficiently distribute the load among the resources accessible on the network. In this paper, we present a distributed and scalable load- balancing framework for grid networks. The generated network system is self-organized and depends only on local information for load distribution and resource discovery. Simulation results show that the generated network system provides an effective, scalable, and reliable load-balancing scheme for the distributed resources accessible on grid networks.
Bloom filter based algorithms have proven successful as very efficient technique to reduce communication costs of database joins in a distributed setting. However, the full potential of bloom filters has not yet been ...
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Bloom filter based algorithms have proven successful as very efficient technique to reduce communication costs of database joins in a distributed setting. However, the full potential of bloom filters has not yet been exploited. Especially in the case of multi-joins, where the data is distributed among several sites, additional optimization opportunities arise, which require new bloom filter operations and computations. In this paper, we present these extensions and point out how they improve the performance of such distributed joins. While the paper focuses on efficient join computation, the described extensions are applicable to a wide range of usages, where bloom filters are facilitated for compressed set representation.
This paper proposes an architecture for forming a parallelization network composed of anonymous web clients - those users anonymously browsing a website. This architecture is layered on conventional HTTP-based web app...
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This paper proposes an architecture for forming a parallelization network composed of anonymous web clients - those users anonymously browsing a website. This architecture is layered on conventional HTTP-based web applications to organize their clients as computing nodes in a massively distributed computation. The key technology of this architecture is a dynamic installation mechanism for a media analysis module, and a dual-channel communications protocol established between Anonymous Web Clients and servers in order to distribute work, and to retrieve the computing results. The important feature of this architecture is that the clients are kept anonymous to the server, so the server does not have to keep track of clients' status. This stateless communication architecture enables scalable expansion of the parallelization network's computing power without relying upon a centralized data center. In effect, this allows a web-based video sharing service to offload some of its analysis onto users browsing the sie, in the background, without interrupting a user's browsing experience. This paper also demonstrates an important optimization for performing media analysis within the parallelization network, which takes advantage of video inter and intra-frame pixel color homogeneity. This paper shows several experimental results for clarifying the system's feasibility and effectiveness, by using a prototype system implementation.
Many of the embedded systems have integrated the features of multimedia, networking, and mobility in a device. With the capability of wireless communication, mobile devices can be connected to share information, and e...
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Many of the embedded systems have integrated the features of multimedia, networking, and mobility in a device. With the capability of wireless communication, mobile devices can be connected to share information, and even more, work together to accomplish a more complex job. In this paper, a novel distributed mobile computing model based on the concept of dynamic task group is proposed. Through this dynamic distributed mobile computing (Dynamic-DMC) model, computing resources can be added and removed dynamically according to the availability of the resources. An environment supporting the Dynamic-DMC model, called D2MCE, has also been implemented. In D2MCE, a shared memory abstraction layer is provided for the purpose of easy programming. An example D2MCE program is also given in this paper. The Dynamic-DMC model and the D2MCE implementation can also be used in traditional cluster computing. Initial result shows that the performance of D2MCE is acceptable.
This paper presents a new protocol for anonymous power auction, a style of auction in which the highest k bidders win with the (k+1)-th price. A set of distributed servers collaborates to decide the (k+1)-th price wit...
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ISBN:
(纸本)0769509517
This paper presents a new protocol for anonymous power auction, a style of auction in which the highest k bidders win with the (k+1)-th price. A set of distributed servers collaborates to decide the (k+1)-th price without revealing any bids including the winner's bids.
Ordinary people already have great difficulty using the advanced features of digitally-operated household devices, and the problem is getting worse as more customization and programming features are continually being ...
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Ordinary people already have great difficulty using the advanced features of digitally-operated household devices, and the problem is getting worse as more customization and programming features are continually being added. This usability problem cannot be solved using only the tiny displays and limited control buttons typically found on home appliances. In this paper we describe how, using home networking to share a larger and more powerful display, we can provide home appliances with a new type of collaborative interface, called DiamondHelp, in which the appliance actively helps the user, especially with complex features that are only occasionally used.
distributed clouds have been regarded as the key enabling technology to provide new trends of services. The contribution of this paper is twofold. First, we discuss current distributed clouds architecture and highligh...
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distributed clouds have been regarded as the key enabling technology to provide new trends of services. The contribution of this paper is twofold. First, we discuss current distributed clouds architecture and highlight the issues involved, specifically scalability. Second, we investigate the benefits of the use of the Recursive InterNetwork Architecture (RINA) as a networking solution for the distributed clouds. Our proposal, called Scalable Forwarding with RINA (SFR), has been evaluated via simulations and showed to reduce the routing table size by around 75%. The paper concludes by highlighting the advantages of the RINA-based approach over current distributed clouds networking solutions in terms of scalability, simplicity and manageability.
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