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Chemistry and nuclear physics represent one of possible options of large area for practical data mining applications. Radio-active nuclides are related with many sectors, such as medicine or industry. Successful detection and identification of radio-nuclides allows the realization of specific safety precaution and then increasing of security level in nuclear power plants, or medicine institutes. Data...
Fault tolerance is an important issue in service oriented architectures like Grid and Cloud systems, where many and heterogeneous machines are used. In this paper we present a flexible failure handling framework which extends a service-oriented architecture for Distributed Data Mining previously proposed, addressing the requirements for handling fault tolerance in service-oriented Grids. In particular,...
S4 is a general-purpose, distributed, scalable, partially fault-tolerant, pluggable platform that allows programmers to easily develop applications for processing continuous unbounded streams of data. Keyed data events are routed with affinity to Processing Elements (PEs), which consume the events and do one or both of the following: (1) emit one or more events which may be consumed by other PEs,...
In the paper, two SNS buddies relationship based authorization delegation mechanisms are introduced to enable SNS users to share his/her external protected resources with friends or friends' friends. Through this solution, user can share more information or documents with his/her friends in a controlled way; he/she can easily find the wanted information or documents with the help of social network...
Due to the dynamic and anonymous nature of open environments, it is critically important for agents to identify trustful cooperators which work consistently as they claim. In the e-services and e-commerce communities, trust and reputation systems are applied broadly as one kind of decision support systems, and aim to cope with the consistency problems caused by uncertain trust relationships. However,...
We detail the notion of architectural scripting (ASL) as a way to model the dynamic aspects of runtime and deployment-time software architecture. This is complementary to the ability of architecture description languages to model architectures statically in that we define scripting operations to modify architectures at runtime. The scripting operations have as verification of the approach been implemented...
In this paper, we present a grid infrastructure we have built to support undergraduate education and research in the University of Houston-Downtown (UHD). The grid is based on four clusters of personal computers. A portal is built to allow remote access to services deployed on the clusters. To address the needs in the undergraduate education at UHD, a lab interface is designed to accommodate lab activity...
In this work we present an scientific application that has been given a Hadoop MapReduce implementation. We also discuss other scientific fields of supercomputing that could benefit from a MapReduce implementation. We recognize in this work that Hadoop has potential benefit for more applications than simply data mining, but that it is not a panacea for all data intensive applications. We provide an...
Starting from 2008, the CMS experiment will produce several Pbytes of data every year, to be distributed over many computing centers geographically distributed in different countries. The CMS computing model defines how the data has to be distributed and accessed in order to enable physicists to run efficiently their analysis over the data. The analysis will be thus performed in a distributed way...
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