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Designing a human computer interface using Laser Track Pad (LTP) for the physically challenged people

Designing a human computer interface using Laser Track Pad (...

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1st IEEE International Conference on Communication and Industrial application, ICCIA 2011

作者： Ghosh, Arghya Garai, Chandan Hajra, Prasun Paul, Pranam Dept. of Computer Science and Engineering National Institute of Technical Teachers' Training and Research Kolkata West Bengal India Dept. of Computer Application Narula Institute of Technology West Bengal India

ISBN: (纸本)9781457719172

In this paper, we have proposed a Human computer Interface, replacing all the basic mouse operations by simple laser beam operations controlled by a Laser Pen (LP) & tracked by the Laser Track Pad (LTP). This approach helps to overcome the limitations of the physically challenged people for interacting with the computer systems. The main emphasis of this work is on mapping the Display Units (DUs) of various resolutions with our fixed-resolution LTP. We have introduced an algorithm to solve the Intermediate Pixel Reachability problem with minimal movement of the laser beam on the LTP (i.e., also with minimal movement of the body part holding the laser pen). The potentiality and possibilities for future works are considered. © 2011 IEEE.

关键词： Pixels

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An interference graph based MAC protocol for multi rate ad hoc networks

An interference graph based MAC protocol for multi rate ad h...

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2011 World Congress on Information and Communication Technologies, WICT 2011

作者： Varma, Sunita Tokekar, Vrinda Department of Computer Technology and Application Shri G.S. Institute of Technology and Science Indore India Department of Information Technology Institute of Engineering and Technology Indore India

ISBN: (纸本)9781467301251

Prior works on the hidden terminal problem in wireless networks often assume that the SNR requirement and the transmission range in a networks are fixed. In fact they are rate dependent. Because of this assumption many of the prior conclusions about the hidden terminal are not accurate. A new analysis of the hidden terminal problem is presented in the paper. The new insights provided by the analysis lead to a IG-MAC scheme for tackling the hidden terminal problem in multi rate ad hoc networks. The key point is to model the interference information by means of Interference Graph and send busy tone with encoded communication information to prevent the potentially interfering nodes from initiating new transmissions. Through the simulations our protocol can solve the hidden terminals problem caused by 802.11 and improve the network performance substantially. © 2011 IEEE.

关键词： Graphic methods

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Improved filtering method used for linear CCD light spot image

Improved filtering method used for linear CCD light spot ima...

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3rd International Conference on Image Analysis and Signal Processing, IASP 2011

作者： Lan, Jiming Zhang, Haiyan Xiong, Gang School of Computer Science Sichuan University of Science and Engineering Zigong China School of Science Sichuan University of Science and Engineering Zigong China State Key Laboratory of Precision Measurement Technology and Instruments Tsinghua University Beijing China Department of Military Oil Application and Administration Logistical Engineering University Chongqing China

ISBN: (纸本)9781612848808

The light spot image of linear CCD is a kind of the representative peak signal. During filtering, it is difficult to suppress noise and preserve the peak features as much as possible. The position, amplitude, area, edge steepness of the signal peak is inevitably affected. Based on the analysis of ordinary weighted moving average (WMA) filtering algorithm, a new weight concept of amplitude and phase bivariate distance is proposed, and a kind of improved adaptive moving average (MA) filtering method, weighting this bivariate distance, is also developed. This method takes into account not only the phase correlation, but also the amplitude correlation among the sampled pixels during WMA computation. Experiments and engineering applications show that the proposed method can obtain a good result in both removing noise and preserving signal features. © 2011 IEEE.

关键词： Adaptive filtering

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QoS priority based scheduling algorithm and proposed framework for task scheduling in a grid environment

QoS priority based scheduling algorithm and proposed framewo...

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International Conference on Recent Trends in Information Technology (ICRTIT)

作者： T Amudha T T Dhivyaprabha Department of Computer Application School of Computer Science & Engineering Bharathiar University Coimbatore India

Grid computing comprises of distributed computer systems which are geographically dispersed to share the combination of resources in a heterogeneous environment. Grid computing is one of the latest technologies to solve very complex problems in scientific applications, using the resource sharing concept in the dynamic virtual organizations. The main problem occurs in most of the organization is that the resources are become idle and underutilized. In some organizations, even the server machines can often be relatively idle. Grid computing provides an approach for exploiting these underutilized resources and thus has the possibility of substantially increasing the efficiency of resource usage. Effective and Efficient Task scheduling is an important aspect of Grid computing. The objective of this paper is that a grid scheduler first allocates the important(high priority) jobs to the resources and then it allocates the low prioritize job so as to achieve the maximum resource utilization rate, minimize the makespan and avoid the load balancing level problem. In this paper, we propose a new framework and QoS(Quality of Service) Priority Based Scheduling Algorithm for effective task scheduling to the resources in the grid environment. The algorithm is simulated using Java. The results show that our proposed QoS priority based scheduling algorithm gives better results in makespan and resource utilization rate than other algorithms such as QoS guided weighted mean time min (QWMTM), Min-Min and Max-Min heuristic algorithms.

关键词： Quality of service Scheduling Resource management Complexity theory Scheduling algorithm Heuristic algorithms Schedules

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High current density ternary-alloy-film dispenser cathode for terahertz vacuum devices

High current density ternary-alloy-film dispenser cathode fo...

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2011 IEEE International Vacuum Electronics Conference, IVEC-2011

作者： Barik, R.K. Raju, R.S. Tanwar, A.K. Das, Supriyo Park, G.S. School of Electrical Engineering and Computer Science Seoul National University Korea Republic of 333 031 India Department of Physics and Astronomy Seoul National University Korea Republic of School of Electrical Engineering and Computer Science Seoul National University Center for THz-Bio. Application Systems Korea Republic of

ISBN: (纸本)9781424486595

Dispenser cathode is used in microwave tubes as source of electrons. We investigate high current density emission capabilities of alloy-coated cathodes used for terahertz vacuum devices. In this paper the developmental work carried out on ternary-alloy-film cathode (2Os:2Re:1W) and the results are presented. The cathodes were tested inside a closed spaced diode and also analytical chamber containing Auger Electron Spectroscopy (AES), Thermionic Emission Microscope (THEM) facility. Emission current densities measured in the diode structure at 1300° K temperature were above 60 A/cm2. The work function was found 1.72 eV using 73% slope method. To ensure the life of the cathode accelerated life test has been carried out in closed spaced diode at 1300° K temperature. © 2011 IEEE.

关键词： Auger electron spectroscopy

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CCD digital camera system for measuring curvature and ovalization of each cross-section of circular tube under cyclic bending

CCD digital camera system for measuring curvature and ovaliz...

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作者： Lee, Kuo-Long Hung, Chao-Yu Pan, Wen-Fung Department of Computer Application Engineering Far East University Tainan County Taiwan Department of Mechanical Engineering R.O.C. Military Academy Kaohsiung Taiwan Department of Engineering Science National Cheng Kung University Tainan Taiwan

In this article, a CCD digital camera system, which comprises a CCD digital camera, two inclinometers, and a self-designed bracket, was built to measure the curvature and ovalization of each cross-section of a circular tube subjected to cyclic bending. The CCD digital camera can take photographs of the changes in the circular tube during the bending process. Simultaneously, the images taken by the CCD digital camera are analyzed by means of software to determine the cross-sectional ovalization of the circular tube. In addition, two inclinometers are employed to measure and control the magnitude of curvature of the circular tube under bending. To test the capability of this newly designed measurement system, a tube-bending machine was employed to test, experimentally, a 7005-T53 aluminum alloy tube under cyclic bending, and the CCD digital camera system was utilized to measure the curvature and each cross-sectional ovalization of the tube. © 2011 The Chinese Institute of Engineers.

关键词： CCD cameras

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Feature reduction using principal component analysis for agricultural data set

Feature reduction using principal component analysis for agr...

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International Conference on Electronic computer Technology

作者： Mishra, Subhadra Mishra, Debahuti Das, Satyabrata Rath, Amiya Kumar Department of Computer Sc. and Application Center for Post Graduate Studies OUAT Bhubaneswar India Institute of Technical Education and Research Siksha O Anusandhan University Bhubaneswar India Department of Computer Science and Engineering CEB Odisha India

ISBN: (纸本)9781424486779

Many applications like video surveillance, telecommunication, weather forecasting and sensor networks uses high volume of data of different types. The effective and efficient analysis of data in such different forms becomes a challenging task. Analysis of such large expression data gives rise to a number of new computational challenges not only due to the increase in number of data objects but also due to the increase in number of attributes. Hence, to improve the efficiency and accuracy of mining task on high dimensional data, the data must be preprocessed by an efficient dimensionality reduction method. In this paper, we have proposed to use the method of k-means clustering and principal component analysis (PCA) approach for attribute reduction, which initially apply PCA to obtain reduced uncorrelated attributes specifying maximal eigenvalues in the dataset with minimum loss of information. Then again we proposed to use k-means on the PCA reduced dataset to discover discriminative features that will be the most adequate ones for classification. This is a combination of clustering approach with feature reduction to obtain a minimal set attributes retaining a suitably high accuracy in representing the original features. We have used the Greengram agricultural data set. Finally, we found that the result of clustering is same after reducing the attributes using PCA. © 2011 IEEE.

关键词： Principal component analysis

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Research on structure analysis for java program

Research on structure analysis for java program

引用

2011 4th International Conference on on Intelligent Networks and Intelligent Systems, ICINIS 2011

作者： Qin, Li-Yong Jiang, Ying Li, Ying-Na Yunnan Key Lab. of Computer Technology Application Kunming China Quality Development Institute Kunming University of Science and Technology Kunming China Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming China

ISBN: (纸本)9780769545431

Software testing includes static testing and dynamic testing. The static testing needn't run the program to be tested. The static analysis belongs to static testing, whose purpose is to collect program's information in order to do further analysis. This paper aims at analyzing the structure for java program and gaining the information at three different levels, including control flow graph at statement level, call graph at class-member level and class relation graph at class level. Then a structure analysis tool for java program (SAT4JP) is designed and implemented. Finally, some experiments are executed to verify the effectiveness of our method and SAT4JP. © 2011 IEEE.

关键词： Software testing

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SWRL bridge-peer model: An improved super-peer model based on the extended SWRL and its application

SWRL bridge-peer model: An improved super-peer model based o...

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2011 IEEE International Conference on Internet of Things, iThings 2011 and 4th IEEE International Conference on Cyber, Physical and Social Computing, CPSCom 2011

作者： Liu, Yu Wang, Ruomei Peng, Liyi Luo, Xiaonan Institute of Computer Application Sun Yat-sen University Guangzhou 510006 China Department of Computer Science Sun Yat-sen University Guangzhou 510006 China National Engineering Research Center of Digital Life Guangzhou 510006 China

ISBN: (纸本)9780769545806

Ontology is a formal explicit specification of a shared conceptualization. With the development of internet technology, how to reuse the distributed ontologies with varies semantic relevance published in the network becomes more and more important. According to the analysis of the Super- Peer Model (SPM), SWRL-Bridge-Peer Model (SWRL-BPM), an improved Super-Peer Model based on the extended SWRL is reported in this paper. In the SWRL-BPM, the query performances about flexibility and efficiency of SPM have been expended, meanwhile SWRL-BPM can solve the problems of large load handling better than SPM. The important thing is that SWRL-BPM shows the good property to reuse, expand and combine the distributed ontology by some means. The knowledge in different domains can be integrated as a larger pool of information to support new communication and use for enterprise on the Internet of Things. The experiments results indicate that SWRL-BPM shows a significant performance improvement on retrieving the dynamic information in an ontology ecosystem. © 2011 IEEE.

关键词： Ontology

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Method on change impact analysis for object-oriented program

Method on change impact analysis for object-oriented program

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2011 4th International Conference on on Intelligent Networks and Intelligent Systems, ICINIS 2011

作者： Zhou, Xiao-Bo Jiang, Ying Wang, Hai-Tao Yunnan Key Lab. of Computer Technology Application Kunming China Quality Development Institute Kunming University of Science and Technology Kunming China Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming China

ISBN: (纸本)9780769545431

Software changes are inevitable during the process of software evolution. To accommodate the changes in the software process, it is necessary to analyze the impacts of the changes. Software change impact analysis (CIA) is a key technique for identifying unpredicted and potential effects caused by changes made to software. CIA allows developers assessing the possible effects of a change, which plays an important role in software maintenance. In this paper, we present the static CIA technology based on program dependence graph (PDG) through analyzing possible change impacts for Object-Oriented source code. An analysis prototype tool for C++ program is implemented. The experimental results show that the method is effective. © 2011 IEEE.

关键词： C++ (programming language)

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