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International Conference on Transparent Optical Networks

作者： Arash Rashedi Yousef S. Kavian Karim Ansari-Asl Zabih Ghassemlooy Department of Computer Architecture Islamic Azad University Iran Faculty of Engineering Shahid Chamran University Ahvaz Iran School of Computing Engineering and Information Sciences Northumbria University UK

In this paper an application of intelligent systems for optical networks design is proposed. The Routing and Wavelength Assignment (RWA) in Dense-Wavelength-Division-Multiplexing (DWDM) optical networks under dynamic traffic patterns is addressed. We mainly focus on how to apply Artificial Bee Colony (ABC) algorithm to solve dynamic RWA problem by minimizing the blocking probability for a sequence of arrival connection requests subject to total number of wavelengths in optical network and wavelength continuity constraints. Simulation results demonstrate that the proposed ABC based DRWA algorithm has better performance in reducing the blocking probability comparing to Fixed-alternate routing algorithm.

关键词： Heuristic algorithms Routing Wavelength assignment Simulation Algorithm design and analysis Optimization

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Artificial Bee Colony model for routing and wavelength assignment problem

Artificial Bee Colony model for routing and wavelength assig...

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International Conference on Transparent Optical Networks

作者： Arash Rashedi Yousef S. Kavian Zabih Ghassemlooy Department of Computer Architecture Islamic Azad University Iran Faculty of Engineering Shahid Chamran University Ahvaz Iran School of Computing Engineering and Information Sciences Northumbria University UK

ISBN: (纸本)9781457708817

In this paper a novel approach for modelling Routing and Wavelength Assignment (RWA) problem in wavelength-routed Dense Wavelength Division Multiplexing (DWDM) optical networks is proposed. A new idea based on Artificial Bee Colony (ABC) algorithm is introduced for solving RWA problem which is known to be an NP-hard problem. In the proposed ABC-RWA approach every food source represents a possible and feasible lightpath between each original and destination node pair in demand matrix. The positions of food sources are modified by some artificial bees in the population where the aim is to discover the places of food sources. The food source with the highest nectar value seems to be a solution which is evaluated by the fitness function. The simulation results demonstrate the ability and efficiency of proposed approach for solving RWA in real-world optical networks. The proposed approach could be extended for dynamic RWA schemes in real-time applications and employed by network resilience architectures.

关键词： Routing Wavelength assignment Algorithm design and analysis Clustering algorithms Optimization Simulation

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A scheduling algorithm for private clouds

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Journal of Convergence Information Technology 2011年第7期6卷 1-9页

作者： Li, Jiandun Peng, Junjie Zhang, Wu School of Computer Engineering and Science Shanghai University Shanghai 200072 China Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Science Beijing 100190 China

In contrast with public clouds, private clouds have some unique features, especially when related to workflow scheduling. Of course, the tradeoff problem between power and performance remains to be one of the key concerns. Based on our previous research, in this paper, we propose a hybrid energy-efficient scheduling algorithm using dynamic migration. The experiments show that it can not only reduce the response time, conserve more energy, but also achieve higher level of load balancing.

关键词： Scheduling algorithms

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An energy-efficient scheduling approach based on private clouds

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Journal of Information and Computational Science 2011年第4期8卷 716-724页

作者： Li, Jiandun Peng, Junjie Lei, Zhou Zhang, Wu School of Computer Engineering and Science Shanghai University Shanghai 200072 China Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Science Beijing 100190 China

With further development and wide acceptance of cloud computing, lots of companies and colleges decide to take advantage of it in their own data centers, which is known as private clouds. Since private clouds have some unique characteristics and special requirements, it is still a challenging problem to effectively schedule virtual machine requests onto compute nodes, especially with multiple objectives to meet. In this paper, we explore couples of characteristics related to workflow scheduling in the scenario of private clouds and propose a hybrid energy-efficient scheduling approach. The experiments show that it can save more time for users, conserve more energy and achieve higher level of load balancing. Copyright © 2011 Binary Information Press.

关键词： Cloud computing

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An Ontology-Based Approach to Adaptive Home Careflows

An Ontology-Based Approach to Adaptive Home Careflows

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International Workshop on Database and Expert Systems Applications

作者： Abdel-Rahman Hani Tawil Anousak Litnhouvongs Quentin Chevalier Adel Taweel School of Architecture Computing & Engineering University of East London UK ISIS Engineering School in Health Information Systems Champollion University Castres France Department of Informatics/Public Health Sciences Kings College London UK

In the healthcare domain, a profusion of workflows are utilised and lots of implicit knowledge is used by domain experts in their daily activities. Ontologies can facilitate the personalized construction of care workflows (care flows) and guide their management in contingency cases, thus allowing them to deviate from their standard prescribed static definition. In this paper we propose a formalization of workflow to automatically adapt the process of homecare for elderly people. We use an ontology of Business Process Modeling Notations(BPMN) associated with both Actor and Case Profile Ontologies to dynamically build flexible care flows capable of guiding the continuity of care.

关键词： Ontologies Adaptation models Business OWL Diseases Senior citizens

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A new approach to evaluating security assurance

A new approach to evaluating security assurance

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International Symposium on Information Assurance and Security (IAS)

作者： Moussa Ouedraogo Haralambos Mouratidis Artur Hecker Cedric Bonhomme Djamel Khadraoui Eric Dubois David Preston School of Architecture Computing and Engineering University of East London UK Telecom ParisTech LTCI-CNRS France Public Research Center Henri Tudor Kirchberg Luxembourg

This paper first analyzes the current gap in the literature in security assurance. It then proposes new metrics for the appraisal of security assurance at runtime. Our metrics are based on key concepts pertinent to gaining confidence on a security mechanism to meet its functions. Such parameters include: security correctness; security effectiveness and the quality of the security verification process. Validation of our approach has been achieved through tool implementation, and application to another of security components including firewall, DNS and antivirus.

关键词： Security Measurement Availability Probes Risk management Fires

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Hard to access the information in the healthcare system? i See! - An innovative touch-screen information board for pediatric hospitals

Hard to access the information in the healthcare system? i S...

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2011 9th IEEE International Conference on Pervasive computing and Communications Workshops, PERCOM Workshops 2011

作者： Tseng, Rung-Yu Chuang, Kevin Hermann, Kristin Koehler, Jon Ellen Yi-Luen Do College of Architecture Georgia Institute of Technology Atlanta GA 30332 United States School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA 30332 United States Health System Institute Georgia Institute of Technology Atlanta GA 30332 United States College of Computing Georgia Institute of Technology Atlanta GA 30332 United States

ISBN: (纸本)9781612849379

Confusion, frustration and anxiety are caused by the ineffective communication in healthcare system. Patients and family members usually have a hard time to acquire necessary information in hospitals. The healthcare literacy, a wide range of patient-age population, and the text-only teaching sheets are important factors to block the communication. Therefore, the proposed work presents an innovative information board that is designed specifically for current pediatric healthcare environment to deliver messages more effectively through a fun and interactive approach. The I See! System carries four goals: Inform, Set expectation, Educate and Ease Anxiety (I.S.E.E). The innovative I See! System achieves these goals through categories, such as introduction video clip, interactive games, key words section and parents' place. Using different sections in the module, patients and families can engage more effectively in medical procedures. The distinguishing features in I See! module are Age-Adaptable, Audio-Visual, Multi-Lingual, Multi-Sensory, Interactive and Procedural. In addition, this module is a mobile, touch-screen and web-based appliance to prepare patients and families well to take the examinations in hospitals. Lastly, this work also discusses how the information in healthcare system could be delivered to patients and families more efficiently. © 2011 IEEE.

关键词： Hospitals

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Providing immersive virtual experience with first-person perspective omnidirectional movies and three dimensional sound field

Providing immersive virtual experience with first-person per...

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4th International Conference on Virtual and Mixed Reality, Virtual and Mixed Reality 2011, held as part of the 14th International Conference on Human-Computer Interaction, HCI International 2011

作者： Kondo, Kazuaki Mukaigawa, Yasuhiro Ikeda, Yusuke Enomoto, Seigo Ise, Shiro Nakamura, Satoshi Yagi, Yasushi Academic Center for Computing and Media studies Kyoto University Yoshida honmachi Sakyo-ku Kyoto Japan The Institute of Scientific and Industrial Research Osaka University 8–1 Mihogaoka Ibaraki-shiOsaka Japan Spoken Language Communication Group National Institute of Information and Communications Technology 3–5 Hikaridai Keihanna Science City Japan Graduate school of engineering Department of Architecture and architectural engineering Kyoto University Kyotodaigaku-katsura Nishikyo-ku Kyoto Japan

ISBN: (纸本)9783642220203

Providing high immersive feeling to audiences has proceeded with growing up of techniques about video and acoustic medias. In our proposal, we record and reproduce omnidirectional movies captured at a perspective of an actor and three dimensional sound field around him, and try to reproduce more impressive feeling. We propose a sequence of techniques to archive it, including a recording equipment, video and acoustic processing, and a presentation system. Effectiveness and demand of our system has been demonstrated by ordinary people through evaluation experiments. © Springer-Verlag Berlin Heidelberg 2011.

关键词： Acoustic fields

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基于漏电变化表征的参数偏差在线预测方法

基于漏电变化表征的参数偏差在线预测方法

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第七届中国测试学术会议

作者： Jin Song 靳松 Han Yinhe 韩银和 Xu Qiang 徐强 Department of Electronic and Communication Engineering School of Electrical and Electronic Engineer 华北电力大学电气与电子工程学院电子与通信工程系保定071003 State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of 中国科学院计算技术研究所计算机体系结构国家重点实验室北京100190 CUhk REliable Computing Laboratory(CURE) Department of Computer Science&Engineering The Chinese Un 香港中文大学计算机科学与工程系

负偏置温度不稳定(NBTI)引发的动态参数偏差给集成电路的生命期可靠性带来严重威胁。已有的方法主要通过设计片上检测电路实时监测关键通路的时延偏差来阻止NBTI导致的电路失效。然而，不断恶化的静、动参数偏差，不断增加的设计复杂度... 详细信息

负偏置温度不稳定(NBTI)引发的动态参数偏差给集成电路的生命期可靠性带来严重威胁。已有的方法主要通过设计片上检测电路实时监测关键通路的时延偏差来阻止NBTI导致的电路失效。然而，不断恶化的静、动参数偏差，不断增加的设计复杂度以及片上检测电路所引入的面积开销会影响上述方法的应用效果。为了弥补已有方法的不足，本文提出以测量到的电路漏电变化为表征，预测NBTI导致的电路时延偏差。首先，通过施加一组测量向量得到的电路漏电变化量被联立成一个方程组;求解方程组后可以得到关键通路上关键门的漏电变化量。随后，根据描述漏电变化与时延偏差相关性的分析表达式来预测任意关键通路的时延偏差。提出的方法对电路工作过程中的实时噪声免疫，且可以通过增加漏电测量时间抵消参数偏差对预测结果的影响。实验结果表明，提出的方法能够以可接受的精度损失有效地预测NBTI导致的电路时延偏差。

关键词：纳米集成电路负偏置温度不稳定性漏电变化时延监测

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Spherical interpolation over graphic processing units

Spherical interpolation over graphic processing units

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ACM SIGSPATIAL 2nd International Workshop on High Performance and Distributed Geographic Information Systems, ACM SIGSPATIAL HPDGIS 2011

作者： Ye, Fei Shi, Xuan Wang, Shaowen Liu, Yan Han, Su Yeon School of Computational Science and Engineering College of Computing Georgia Institute of Technology Atlanta GA United States Center for Geographic Information Systems College of Architecture Georgia Institute of Technology Atlanta GA United States University of Illinois at Urbana-Champaign Urbana IL United States Department of Geography University of Illinois at Urbana-Champaign Urbana IL United States University of Illinois at Urbana-Champaign Urbana IL United States

ISBN: (纸本)9781450310406

Spatial interpolation is a widely used GIS function for estimating values at locations where observed values are not available or adequate. One popular method for spatial interpolation is inverse distance weighted, which calculates estimated values based on a weighted sum of the values of a number of nearest neighbors that have observed values. This research focuses on solving a large-scale interpolation problem with a global coverage based on the inverse distance weighted method. Specifically, spherical distance is calculated instead of normal Euclidean distance commonly used in GIS software, which is necessary to find correct neighbors in the regions along the 180° longitude and in the polar areas. The computation of the global-scale interpolation based on spherical distance is intensive especially for achieving high-resolution results. This paper introduces how to accelerate such computation by exploiting massive parallelism provided by Graphic Processing Units (GPUs) with significant improvement of computational performance reported. © 2011 ACM.

关键词： Graphics processing unit

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