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Understanding power efficiency of TCP/IP packet processing over 10GbE

Understanding power efficiency of TCP/IP packet processing o...

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18th IEEE Symposium on High Performance Interconnects, HOTI 2010

作者： Liao, Guangdeng Zhu, Xia Larsen, Steen Bhuyan, Laxmi Huggahalli, Ram Department of Computer Science and Engineering University of California Riverside United States Circuit and System Research Lab. Intel Corporation United States

ISBN: (纸本)9780769542089

With the rapid evolution of network speed from 1Gbps to 10Gbps, a wide spectrum of research has been done on TCP/IP to improve its processing efficiency on general purpose processors. However, most of them did studies only from the performance perspective and ignored its power efficiency. As power has become a major concern in data centers, where servers are often interconnected with 10GbE, it becomes critical to understand power efficiency of TCP/IP packet processing over 10GbE. In this paper, we extensively examine power consumption of TCP/IP packet processing over 10GbE on Intel Nehalem platforms across a range of I/O sizes by using a power analyzer. In order to understand the power consumption, we use an external Data Acquisition system (DAQ) to obtain a breakdown of power consumption for individual hardware components such as CPU, memory and NIC etc. In addition, as integrated NIC architectures are gaining more attention in high-end servers, we also study power consumption of TCP/IP packet processing on an integrated NIC by using a Sun Niagara 2 processor with two integrated 10GbE NICs. We carefully compare the power efficiency of using an integrated NIC with using a PCI-E based discrete NIC. We make many new observations as follows: 1) Unlike 1GbE NICs, 10GbE NICs have high idle power dissipation, and TCP/IP packet processing over 10GbE consumes significant dynamic power. 2) Our power breakdown reveals that CPU is the major source of the dynamic power consumption, followed by memory. As the I/O size increases, the CPU power consumption reduces but the memory power consumption grows. Compared to CPU and memory, NIC has low dynamic power consumption. 3) Large I/O sizes are much more power efficient than small I/O sizes. 4) While integrating a 10GbE NIC slightly increases CPU power consumption, it not only reduces system idle power dissipation due to elimination of PCI-E interface in NICs, but also achieves dynamic power savings due to better processing efficienc

关键词： Electric power utilization

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Study on image feature selection: A genetic algorithm approach

Study on image feature selection: A genetic algorithm approa...

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Institution of engineering and Technology International Conference on Frontier Computing : Theory, Technologies and Applications

作者： Huang, H.I. Wu, Y.S. Chan, Y.K. Lin, C.H. Department of Computer Science and Information Engineering National Taichung Institute of Technology Taiwan Graduate School of Computer Science and Information Technology National Taichung Institute of Technology Taiwan Department of Management Information System National Chung Hsing University Taiwan

ISBN: (纸本)9781849192088

This study was mainly about genetic algorithms of feature selection. The features adopted by this paper include CCM and DBPSP for the relationship between color and texture, CHKM for the color information of an image. The genetic algorithm of this study is implemented by MatLab program. The genetic algorithm optimization and searching technology adopted mechanics of genes and natural selection, and the algorithm implementation steps are: population initialization, fitness functions, selection, crossover, mutation, iteration and evolution. Feature selections used here are Sequential Forward Selection (SFS), Sequential Backward Selection (SBS), and the genetic algorithm-based feature selection used in this essay respectively. This study was analyzed and compared the result of the experiment respectively. The experiment was carried out for comparing the image retrieval accuracy, feature selection and computing time of image retrieval.

关键词： Genetic algorithms

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Noninvasive biosignal measurement of a subject in bed using ceramic sensors

Noninvasive biosignal measurement of a subject in bed using ...

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作者： Shino, Toshihiro Watanabe, Kajiro Kobayashi, Kazuyuki Suzuki, Kaoru Kurihara, Yosuke System Control Engineering Department Faculty of Engineering Hosei University Koganei-shi Tokyo Japan Department of Computer and Information Science Faculty of Science and Technology Seikei University Musashino-shi Tokyo Japan

This paper describes a novel noninvasive method for sensing heartbeat, respiration and body-movement biosignals of a subject in bed by using ceramic piezo devices set under the legs of the bed. © 2010 SICE.

ISBN: (纸本)9784907764364

关键词： Noninvasive medical procedures

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A simple data embedding scheme for spatial-domain images with low distortion

A simple data embedding scheme for spatial-domain images wit...

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作者： Ku, Houng-Kuo Koo, Horng-Show Department of Computer Science and Information Engineering Fortune Institute of Technology Kaohsiung County 831 Taiwan Department of Optoelectronic System Engineering Ming-Hsin University of Science and Technology Hsinfeng Hsinchu 304 Taiwan

ISBN: (纸本)9781617827020

We propose a simple data hiding algorithm, the one's complement substitution process, for spatial-domain still images. Different from the LSBs substitution and optimal pixel adjustment process (OPAP), our method limits the distortion of each pixel within 2 bits while 3 bits (k=3) or 4 bits (k=4) of information are to embed/replace the original 3 or 4 LSBs, at the cost of one extra bit (k=3) or two bits (k=4) for recovering if the one's complement process has been performed. Experimental results show the proposed method improves in average 10.2% (for k=3) and 27.19% (for k=4), in PSNR respectively, as compared with the OPAP, for the benchmark images.

关键词： Steganography

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E-cost estimation using expert judgment and COCOMO II

E-cost estimation using expert judgment and COCOMO II

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2010 International Symposium on Information Technology, ITSim'10

作者： Mansor, Zulkefli Bin Kasirun, Zarinah Mohd Arshad, Noor Habibah Hj Yahya, Saadiah Department of Computer Science Faculty of Industrial Information Technology Universiti Industri Selangor Selangor Malaysia Department of Software Engineering Faculty of Computer Science and Information Technology Universiti Malaya Kuala Lumpur Malaysia System Science Studies Faculty of Computer Science and Mathematics Universiti Teknologi Mara Selangor Malaysia Computer Technology and Networking Studies Faculty of Computer Science and Mathematics Universiti Teknologi Mara Selangor Malaysia

ISBN: (纸本)9781424467181

The accuracy and efficiency of cost estimation methodology for web-based application is very important for software development as it would be able to assist the management team to estimate the cost. Furthermore, it will ensure that the development of cost is within the planned budget and provides a fundamental motivation towards the development of web-based application proíéct. The literature review reveals that COCOMO II provides accurate result because more variables are considered including reuse parameter. The parameter is one of the essential variables in estimating the cost in web-based application development. This research investigates the feasibility to combine and implement COCOMO II and el pert I Udgment technil be in a tool called WebCost. In estimating a cost, the tool considers all variables in COCOMO II and rei bires el pert l udgment to key-in the input of the variables such as pro I éct size, pro I éct type, cost ad i Ustment factor and cost driven factor. I leveloped in JA I A, WebCost is proven able to estimate cost and generate its estimation result. The usability evaluation conducted had shown that WebCost is usable when compared with other tools I lit has its own advantages. WebCost is evidence suitable for everyone especially the prolect managers, software practitioners or software engineering student in handling the cost estimation tasks. © 2010 IEEE.

关键词： Software design

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DAWN: Energy efficient data aggregation in WSN with mobile sinks

DAWN: Energy efficient data aggregation in WSN with mobile s...

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2010 IEEE 18th International Workshop on Quality of Service, IWQoS 2010

作者： Tang, Shao Jie Yuan, Jing Li, Xiang Yang Liu, Yunhao Chen, Gui Hai Gu, Ming Zhao, Ji Zhong Dai, Guojun Department of Computer Science Illinois Institute of Technology Chicago IL United States State Key Laboratory of Novel Software Technology NanJing University NanJing China Department of Computer Science and Engineering HKUST China Key Laboratory of Information System Security Tsinghua University China Institute of Computer Application Technology Hangzhou Dianzi University China Department of Computer Science and Engineering Xi'An JiaoTong University China

ISBN: (纸本)9781424459889

The benefits of using mobile sink to prolong sensor network lifetime have been well recognized. However, few provably theoretical results remain are developed due to the complexity caused by time-dependent network topology. In this work, we investigate the optimum routing strategy for the static sensor *** further propose a number of motion stratifies for the mobile sink(s) to gather real time data from static sensor network, with the objective to maximize the network lifetime. Specially, we consider a more realistic model where the moving speed and path for mobile sinks are constrained. Our extensive experiments show that our scheme can significantly prolong entire network lifetime and reduce delivery delay.

关键词： Sensor networks

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A taxonomy of Botnet detection techniques

A taxonomy of Botnet detection techniques

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2010 3rd IEEE International Conference on computer science and Information Technology, ICCSIT 2010

作者： Zeidanloo, Hossein Rouhani Zadeh, Mohammad Jorjor Shooshtari Amoli, Payam Vahdani Safari, M. Zamani, Mazdak Faculty of Computer Science and Information System University of Technology Malaysia 54100 Kuala Lumpur Malaysia Industrial Engineering Department AmirKabir University of Technology Tehran Iran

ISBN: (纸本)9781424455386

Among the diverse forms of malware, Botnet is the most widespread and serious threat which occurs commonly in today's cyber attacks. Botnets are collections of compromised computers which are remotely controlled by its originator (BotMaster) under a common Commond-and-Control (C&C) infrastructure. They provide a distributed platform for several illegal activities such as launching distributed denial of service (DDOS) attacks against critical targets, malware distribution, phishing, and click fraud. Most of the existing Botnet detection approaches concentrate only on particular Botnet command and control (C&C) protocols (e.g., IRC,HTTP) and structures (e.g., centralized), and can become ineffective as Botnets change their structure and C&C techniques. The detection of Botnet has been a major research topic in recent years. Different techniques and approaches have been proposed for detection and tracking of Botnet. This survey classifies Botnet detection techniques into two approaches. One approach is based on setting up honeynets and another approach is based on Intrusion Detection system( IDS) which has been categorized into signature-based and anomaly-based detection techniques. © 2010 IEEE.

关键词： Botnet

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Hybrid network worm emulation and analysis

Hybrid network worm emulation and analysis

引用

International Forum on Information Technology and Applications

作者： Xiaohui, Kuang MinHuan, Huang Yan, Wen Fei, Xu National Key Laboratory of Science and Technology on Information System Security Beijing Institute of System Engineering Beijing 100101 China Department of Testing and Command Academy of Equipment Command and Technology Beijing 101400 China Department of Computer Science and Technology Tshinghua University Beijing 100084 China

ISBN: (纸本)9780769541150

The worm experimental environment is the pivotal foundation for the worm research. Existing methods to build the environment can be classified into three categories: mathematical modeling, simulation and emulation. However, almost all of the existing methods inherently face a rigid fidelity-scalability tradeoff problem. Aming at this issue, this paper proposes a novel virtual-reality hybrid worm emulation model, which integrated the packet-level simulation and network emulation method to build worm experimental environment, for analyzing the behavior of worm propagation with respect to the changes of the network and worm characteristics. With the experiments, we analyze the impacts, induced by the network and worm characteristics on the worm propagation. The results indicate that our experimental environment can provide great support for the worm research. © 2010 IEEE.

关键词： Virtual reality

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Assignments acceptance strategy in a Modified PSO Algorithm to elevate local optima in solving class scheduling problems

Assignments acceptance strategy in a Modified PSO Algorithm ...

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2010 6th International Colloquium on Signal Processing and Its Applications, CSPA 2010

作者： Aziz, Mohd Azri Abdul Taib, Mohd Nasir Hussin, Naimah Mohd Department of System Engineering Faculty of Electrical Engineering Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia Computer Science Department Universiti Teknologi MARA Perlis Arau Campus 02600 Arau Perlis Malaysia

ISBN: (纸本)9781424471225

Local optima in optimization problems describes a state where no small modification of the current best solution will produce a solution that is better. This situation will make the optimization algorithm unable to find a way to global optimum and finally the quality of the generated solution is not as expected. This paper proposes an assignment acceptance strategy in a Modified PSO Algorithm to elevate local optima in solving class scheduling problems. The assignments which reduce the value of objective function will be totally accepted and the assignment which increases or maintains the value of objective function will be accepted based on acceptance probability. Five combinations of acceptance probabilities for both types of assignments were tested in order to see their effect in helping particles moving out from local optima and also their effect towards the final penalty of the solution. The performance of the proposed technique was measured based on percentage penalty reduction (%PR). Five sets of data from International Timetabling Competition were used in the experiment. The experimental results shows that the acceptance probability of 1 for neutral assignment and 0 for negative assignments managed to produce the highest percentage of penalty reduction. This combination of acceptance probability was able to elevate the particle stuck at the local optima which is one of the unwanted situations in solving optimization problems. © 2010 IEEE.

关键词： Probability

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A scenario based approach for service identification

A scenario based approach for service identification

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IEEE International Workshop on Requirements engineering for Services

作者： Kim, Suntae Kim, Minseong Sugumaran, Vijayan Park, Sooyong Department of Computer Science and Engineering Sogang University Seoul Korea Republic of Department of Computer Science George Mason University Fairfax VA 22030 United States School of Business Administration Oakland University Rochester MI 48309 United States Department of Service System Management and Engineering Sogang University Seoul Korea Republic of

ISBN: (纸本)9780769541051

Service oriented approach is increasingly being utilized to develop business applications to keep pace with the changing environment and business requirements. Service identification is one of the core activities in developing Service oriented systems. To identify proper services, business requirements and business change factors should be analyzed because the ultimate aim of a service oriented system is to achieve business requirements and business agility. We propose a service identification method based on scenario modeling and a conceptual framework to elicit possible business changes. Traceability among business requirements, business changes and the identified services are also supported by our method. © 2010 IEEE.

关键词： SOA Scenario Service Identification business agility business application business data processing scenario based approach scenario modeling service identification service oriented system software architecture

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