In this paper, we make the study on the unique solution for the P3P problem. After partitioning the space into several regions, the parametric function and target function for each region are presented. Under the cond...
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ISBN:
(纸本)9781605581668
In this paper, we make the study on the unique solution for the P3P problem. After partitioning the space into several regions, the parametric function and target function for each region are presented. Under the condition of knowing the approximate relative position between center of perspective and control points, the unique solution can be obtained.
This paper presents a middleware infrastructure for integration of heterogeneous embedded devices in ubiquitous computing environments. The proposed infrastructure employs the Devices Profile for Web Services (DPWS) a...
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ISBN:
(纸本)9781605581668
This paper presents a middleware infrastructure for integration of heterogeneous embedded devices in ubiquitous computing environments. The proposed infrastructure employs the Devices Profile for Web Services (DPWS) as the underlying integration technology, allowing devices that adopt different networking standards to interact with each other, through the use of interconnection devices and software components responsible for building a communication path among them. A prototype implementation of this middleware infrastructure is also described, and results of performance measurements obtained with this prototype are presented. Copyright 2009 acm.
The design paradigm service-orientation combines several proven design elements - such as decentralization, and scalability - with design elements from recent technology evolution, in particular abstraction and loosel...
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ISBN:
(纸本)9781605581668
The design paradigm service-orientation combines several proven design elements - such as decentralization, and scalability - with design elements from recent technology evolution, in particular abstraction and loosely coupling. However, few work has been conducted to investigate the complexity associated with service-oriented systems. This work provides an overview on complexity in SOC, outlines the challenges in assessing complexity in SOC, and proposes an experiment-based approach to assess the impact of various inherent properties on the complexity of service-oriented systems. Copyright 2009 acm.
We describe a strategy for parallelizing a geothermal simulation package using the shared-memory programming model OpenMP. During the code development OpenMP is employed for the direct problem in such a way that, in a...
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ISBN:
(纸本)9781605581668
We describe a strategy for parallelizing a geothermal simulation package using the shared-memory programming model OpenMP. During the code development OpenMP is employed for the direct problem in such a way that, in a subsequent step, the OpenMP-parallelized code can be transformed via automatic differentiation into an OpenMP-parallelized code capable of computing derivatives for the inverse problem. Performance results on a Sun Fire X4600 using up to 16 threads are reported demonstrating that, for the derivative computation, an approach using nested parallelism is more scalable than a single level of parallelism. Copyright 2009 acm.
With the emerging growth of web services tecnology, the Web is now evolving to become a service provider. In this context, the semantic web services discovery and composition are hard tasks because injecting context i...
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ISBN:
(纸本)9781605581668
With the emerging growth of web services tecnology, the Web is now evolving to become a service provider. In this context, the semantic web services discovery and composition are hard tasks because injecting context into adaptive service integration raises a number of significant challenges, i.e. defining effective metrics to manage adaptation. This paper proposes an algorithm for Semantic Web Services discovery and compositon which makes use of similarity metrics. Copyright 2009 acm.
Imprecise input data imposes additional challenges to grid scheduling. This paper introduces a novel scheduler based on fuzzy optimization called IP-FULL-FUZZY which considers uncertainties of both application demands...
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ISBN:
(纸本)9781605581668
Imprecise input data imposes additional challenges to grid scheduling. This paper introduces a novel scheduler based on fuzzy optimization called IP-FULL-FUZZY which considers uncertainties of both application demands and of resource availability. The effectiveness of the proposed scheduler is compared to those of a non-fuzzy scheduler as well as to those of a fuzzy scheduler which considers only uncertainties of application demands. Results evince the advantages of adopting the proposed scheduler. Copyright 2009 acm.
We propose a new cross-training based learning algorithm in this paper. This algorithm generates three classifiers based on the three subsets of original labeled and unlabeled training set. The proposed algorithm is e...
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ISBN:
(纸本)9781605581668
We propose a new cross-training based learning algorithm in this paper. This algorithm generates three classifiers based on the three subsets of original labeled and unlabeled training set. The proposed algorithm is evaluated using data from the UCI repository by the experiment. Experimental results show that our algorithm can improve classification accuracy compared to those of other algorithms. Copyright 2009 acm.
Denial of service (DoS) attacks are one of the complex problems in the current Internet. In this paper, we propose a system, DoSTRACK, that can efficiently deal with the TCP SYN and reflection Distributed Denial of Se...
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ISBN:
(纸本)9781605581668
Denial of service (DoS) attacks are one of the complex problems in the current Internet. In this paper, we propose a system, DoSTRACK, that can efficiently deal with the TCP SYN and reflection Distributed Denial of Service (DDoS) attacks. We also describe a prototype implementation of our model with HP OpenView Network Node Manager (NNM) and discuss how our model can be beneficial to the DDoS victim and the ISP. Copyright 2009 acm.
Cloud computing is gaining popularity to the extent that the new "XaaS" service category introduced will gradually take the place of many types of computational and storage resources used today. In this rega...
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ISBN:
(纸本)9781605581668
Cloud computing is gaining popularity to the extent that the new "XaaS" service category introduced will gradually take the place of many types of computational and storage resources used today. In this regard, grid computing, on which the large scale supply of cloud services is based, will play a key role in defining how those services will be provided. This paper concerns the analysis and preliminary design of a real time financial system that relies on cloud computing technologies for performing macroeconomic analysis and forecasts of the financial markets and their instruments. Cloud and grid paradigms generate different added values. Some of these are examined in the paper, for instance the use of an Instruction Set to interact with the Grid. This work uses the results obtained in the Cybersar Project managed by the COSMOLAB Consortium (Italy). The system analyzed and described herein will be implemented in the Cybersar Computational Grid by autumn 2009. Copyright 2009 acm.
Virtualization is an essential enabling technology for building and controlling computing frameworks that can dynamically adapt available physical resources to transient tasks such as the temporary creation of a virtu...
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ISBN:
(纸本)9781605581668
Virtualization is an essential enabling technology for building and controlling computing frameworks that can dynamically adapt available physical resources to transient tasks such as the temporary creation of a virtual computing center tailored to the needs of a virtual organization. In this paper we will report on our strategy for the creation of virtual computer clusters based on standard Service-Oriented Architecture (SOA) and hosts virtualization technologies. We will describe our infrastructure designed for dynamical allocation of resources to applications via a general control plane based on workflows of coordinated web services. The control plane is based on logically independent services that are responsible for physical resource management and virtual nodes deployment. The control plane is also responsible for operations on virtual clusters such as their creation, startup and control. Copyright 2009 acm.
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