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International Symposium on Underwater Technology

作者： Shalini Jain Emmanuel S Pilli M. C Govil D Vijay Rao Department of Computer Engineering Malviya National Institute of Technology (MNIT) Jaipur India Institute for System Studies and Analyses Delhi India

Performance advancements in acoustic communication technology have fostered to provide technical platform for numerous interdisciplinary applications ranging from bathymetry, hydrographic surveys, disaster prevention, to tactical surveillance over underwater sensor networks (UWSN). Supporting real-time data transmission over error-prone UWSN is increasingly important as these networks become more widely deployed. Existing UWSN routing protocols caters the requirements of non-real time applications where as delay sensitive applications requires solutions that can improve efficiency and reliability, often dynamically throughout the event detection and data transmission session. Congestion control is vital to achieve a high throughput and a long network lifetime. In particular, it is important for a routing protocol to provide congestion control by incorporating metrics like throughput, delay, packet loss ratio, etc. This paper presents a comparative analysis of UWSN routing protocols over real time multimedia data, using H.265/HEVC encoded video sequences. The aim of this study is to extend the in-built support in UWSN routing protocols for transmission of real time data traffic. The applicability of congestion control protocols in UW framework has been explored and the performance characteristics of the protocols have been studied under different multimedia load conditions with varying mobility. This methodology has been illustrated using the case studies in the military and ocean monitoring domains.

关键词： Delays Routing protocols Multimedia communication Distributed Bragg reflectors Streaming media Wireless sensor networks

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A new transmission line pilot differential protection principle using virtual impedance of fault component

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Canadian Journal of Electrical and computer engineering 2015年第1期38卷 37-44页

作者： Ma, Jing Pei, Xun Ma, Wei Wang, Zengping State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing071003 China Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University BlacksburgVA24061 United States Fangshan Power Supply Bureau State Grid Beijing Electric Power Grid Beijing100031 China State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Changping Beijing102206 China

A novel line pilot differential protection principle based on the virtual impedance of fault component is proposed in this paper. First, according to the fault component of the measured current and voltage at both line ends, the fault component of the current and voltage at the line midpoint is calculated. Second, the virtual impedance is defined as the calculated voltage fault component divided by the calculated current fault component. And then, according to the two virtual impedances calculated at two line ends, the ratio restraint criterion is formed with the sum of the virtual impedances and the smaller virtual impedance. Finally, by analyzing different characteristics of the criterion in different fault cases, the fault can be identified. Simulation results verify that the proposed method is able to identify different kinds of fault accurately with high sensitivity. It is highly reliable and not affected by the fault location, transition resistance, load current, distributed capacitance, and data synchronization. Even in the case of transitional fault, selectivity can still be guaranteed with the proposed method. © 2003-2010 IEEE.

关键词： Capacitance

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Making programmer suitable for team-leader: Software team composition based on personality types

Making programmer suitable for team-leader: Software team co...

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International Symposium on Mathematical Sciences and Computing Research (iSMSC)

作者： Abdul Rehman Gilal Jafreezal Jaafar Shuib Basri Mazni Omar Muhammad Zahid Tunio Sukkur Institute of Business Administration (IBA) Pakistan Department of Computer and Information Sciences Universiti Teknologi PETRONAS Malaysia School of Computing Universiti Utara Malaysia Department of Computer System Engineering Dawood University of Engineering & Technology Pakistan

The profuse use of software has turned the world into global village where everything is accessible at finger tips. The past studies have confirmed the rapid increase in the demand of software whereas its quality supply has drastically decreased to 6%. As high demand and low supply normally generate numerous problems, many researchers, therefore, have raised their concern to develop software affordable, less time consuming and feasible to achieve organisational ends. The findings of the past research studies have determined the fact that besides technical skills, human resources (i.e., personality type for team composition) is of pivotal importance for developing software which has not been seriously addressed. This study has tried to address this prevailing problem by focusing on patterns of personality types of programmer role monitored with team-leader. Additionally, to draw the attention of practitioners, the results are validated with several classification techniques and results appeared with high accuracy. The study has implications on both software developers and researchers having their interest in role of team composition in software development.

关键词： Software Genetic algorithms Training Rough sets Veins Software engineering Algorithm design and analysis

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Response Policies to Process Module Failure in Single-Arm Cluster Tools Subject to Wafer Residency Time Constraints

Response Policies to Process Module Failure in Single-Arm Cl...

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作者： Qiao, Yan Pan, Chun-Rong Wu, Nai-Qi Zhou, Mengchu Department of Industrial Engineering School of Electro-Mechanical Engineering Guangdong University of Technology Guangzhou510006 China School of Mechatronics and Electrical Engineering Jiangxi University of Science and Technology Ganzhou341000 China Institute of Systems Engineering Macau University of Science and Technology Taipa China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai201804 China Department of Electrical and Computer Engineering New Jersey Institute of Technology NewarkNJ07102-1982 United States

In semiconductor manufacturing, wafer residency time constraints make the scheduling problem of cluster tools complicated. A process module (PM) in cluster tools is prone to failure. It is crucial to deal with any such failure in a proper and timely manner. If there are feasible periodic schedules in operating a cluster tool before and after a PM failure, it is desired to make it operate continuously when such a failure occurs. However, due to wafer residency time constraints, it is highly challenging to control a tool such that it can be correctly transferred from a feasible schedule before failure to another after it. To solve this problem, a Petri net model is developed to describe the dynamic behavior of a single-arm cluster tool and failure response policies are proposed. The proposed policies are formulated via simple control laws for their easy implementation. Examples are given to show them. © 2015 IEEE.

关键词： Scheduling

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On the Walsh spectrum of a family of quadratic APN functions with five terms

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Science China(Information Sciences) 2014年第2期57卷 271-277页

作者： QU LongJiang TAN Yin LI Chao Department of Mathematics and System Science Science CollegeNational University of Defense Technology Department of Electrical and Computer Engineering University of Waterloo

Recently,a family of quadratic APN functions was demonstrated by Bracken et *** exist over F22k with k even and 3 *** family of APN functions was firstly proposed by Budaghyan et *** they exist provided the existence of a quadratic polynomial of the type x2s+1+cx2s+c2k x+1 with no zeros in *** et *** such polynomials when k is even and 3 *** this paper,we show that such polynomials exist for all even integers *** a result,the APN functions over F22k exist for all even ***,the Walsh spectra of these APN functions is shown to be the same as the one of the Gold APN *** gives a positive answer to one conjecture.

关键词： APN function Walsh spectrum nonlinearity quadratic polynomial polynomial with no zeros

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Comparison Between Passive and Active Measurement Methods of Radon Pollution in Historical Heritage Buildings 1

Comparison Between Passive and Active Measurement Methods of...

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1st International Conference on Metrology for Archaeology, MetroArchaeo 2015

作者： Nastro, V. Lamonaca, F. Carnì, D.L. Riccio, M. Vasile, M. Dept. of Chemistry and Chemical Technology University of Calabria CS Rende Italy Dept. of Computer Science Modelling Electronic and System University of Calabria CS Rende Italy Department of Engineering University of Sannio Benevento Italy Medical School Ovidius University Constanta Romania

ISBN: (纸本)9788894045338

In this work the applicability of active and passive measurement techniques for the Radon’s concentration level (222Rn) evaluation in historical heritage buildings is studied. In particular, for a given lithology of the ground and material of construction, the measurement techniques evaluate the different variations of indoor concentration of222Rn. The measurements are performed in three old churches located in San Giovanni in Fiore (Cosenza, Italy). The monitored sites are erected on the common granite massif of Sila by using the local granite stone, that contains heavy metals producing Radon gas during their degradation. The analysis of the measurement results are used to determine the most effective solution to be used in this type of buildings and to have a wide view about the accumulation of Radon gas, in the various monitored spaces. © 2015 Metrology for Archaeology, MetroArchaeo

关键词： Radon

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High-power efficient Yb-doped fiber Laser with low quantum defect

High-power efficient Yb-doped fiber Laser with low quantum d...

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Workshop on Specialty Optical Fibers and their Applications, WSOF 2015

作者： Gu, Guancheng Liu, Zhengyong Kong, Fanting Tam, Hwayaw Shori, Ramesh K. Dong, Liang Holcombe Department of Electrical and Computer Engineering Clemson University AMRL Building 91 Technology Drive AndersonSC29625 United States Photonics Research Centre Department of Electrical Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong SPAWAR System Center 53560 Hull Street Code 71730 San DiegoCA92152 United States

Using an ytterbium-doped-phosphosilicate double-clad leakage channel fiber with ~50μm core and ~420μm cladding, we have achieved ~70% optical-to-optical efficiency at 1018nm. The much larger cladding enables use of ... 详细信息

ISBN: (纸本)9781943580057

关键词： Ytterbium compounds

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Distance measure to cluster spatiotemporal scenarios for strategic air traffic management

Distance measure to cluster spatiotemporal scenarios for str...

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作者： Xie, Junfei Wan, Yan Zhou, Yi Tien, Shin-Lai Vargo, Erik P. Taylor, Christine Wanke, Craig University of North Texas DentonTX76207 United States MITRE Corporation McLeanVA22102 United States Department of Computer Science and Engineering United States Department of Electrical Engineering United States M/S N450 7515 Colshire Drive United States M/S N390 7515 Colshire Drive United States TFM Evolution and System Engineering United States

Convective weather, recognized as the leading contributor to delays in the National Airspace system, causes demand-capacity imbalance in the airspace. Strategic air traffic management aims to resolve the imbalance for offnominal conditions (for example, convective weather events) through redistributing flows and resources at the strategic timeframe (2-15 h in advance). As a component of scenario-driven strategic air traffic management, this paper develops a multiresolution spatiotemporal distance measure that, combined with standard distance-based clustering algorithms, can be used to group a wide range of possible weather-impact scenarios into a few representative clusters to facilitate corresponding management strategy design. Motivations of this new distance measure, its generation algorithm, and parameter impact analysis are described in detail to facilitate practical implementation and subsequent use in decision support. This multiresolution spatiotemporal distance measure not only addresses the needs of scenario-driven strategic air traffic management but also generally applies to broad data-driven decision support applications that involve large-scale physical processes of spatiotemporal spread dynamics, as the measure captures the similarity between scenarios of spatiotemporal spread patterns of varying shape, size, location, and intensity;corrects the "boundary effects";and is flexible to a variety of data features in temporal and spatial dimensions. Performance evaluation is conducted through comparative studies and sensitivity analysis, using real weather-impact datasets. Copyright © 2015 by Ruxandra M. Botez. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.

关键词： Sensitivity analysis

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Distributed strategic mode selection for large-scale D2D communications based on Queue State Information

Distributed strategic mode selection for large-scale D2D com...

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Annual Conference on Information Sciences and systems (CISS)

作者： Yezekael Hayel Eran Simhon David Starobinski Quanyan Zhu LIA/CERI University of Avignon Avignon France Department of Electrical and Computer Engineering New York University USA Division of System Engineering Boston University USA

Device-to-Device (D2D) communication that enables nearby mobiles to directly communicate one with another is a new paradigm aimed at increasing the capacity of next-generation wireless networks. The coexistence of D2D and cellular communication in the same spectrum poses new challenges for resource allocations and interference management in a large-scale wireless system where each mobile strategically selects its mode of communications. This paper formulates a game-theoretic framework to capture the distributed strategic behavior of a large population of mobiles in selecting their mode of communications. In particular, we investigate the impact of Queue State Information (QSI) of the base station (BS) on the mobile decisions, and we show that the common knowledge of QSI can induce bad quality of service for standard cellular traffic, when the capacity of the base station is below a certain threshold. This paradox will be used to guide the design of optimal learning and scheduling algorithms for the coexisting D2D communication networks.

关键词： Mobile communication Base stations Delays Quality of service Mobile computing Wireless communication Transmitters

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RETRACTED ARTICLE: Day of the year-based prediction of horizontal global solar radiation by a neural network auto-regressive model

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Theoretical and Applied Climatology 2015年第3期125卷 679-689页

作者： Gani, Abdullah Mohammadi, Kasra Shamshirband, Shahaboddin Khorasanizadeh, Hossein Seyed Danesh, Amir Piri, Jamshid Ismail, Zuraini Zamani, Mazdak Department of Computer System and Technology Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia Faculty of Mechanical Engineering University of Kashan Kashan Iran Department of Software Engineering Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia Department of Water Engineering Soil and Water College University of Zabol Zabol Iran Advanced Informatics School Universiti Teknologi Malaysia Johor Bahru Malaysia

The availability of accurate solar radiation data is essential for designing as well as simulating the solar energy systems. In this study, by employing the long-term daily measured solar data, a neural network auto-regressive model with exogenous inputs (NN-ARX) is applied to predict daily horizontal global solar radiation using day of the year as the sole input. The prime aim is to provide a convenient and precise way for rapid daily global solar radiation prediction, for the stations and their immediate surroundings with such an observation, without utilizing any meteorological-based inputs. To fulfill this, seven Iranian cities with different geographical locations and solar radiation characteristics are considered as case studies. The performance of NN-ARX is compared against the adaptive neuro-fuzzy inference system (ANFIS). The achieved results prove that day of the year-based prediction of daily global solar radiation by both NN-ARX and ANFIS models would be highly feasible owing to the accurate predictions attained. Nevertheless, the statistical analysis indicates the superiority of NN-ARX over ANFIS. In fact, the NN-ARX model represents high potential to follow the measured data favorably for all cities. For the considered cities, the attained statistical indicators of mean absolute bias error, root mean square error, and coefficient of determination for the NN-ARX models are in the ranges of 0.44–0.61 kWh/m2, 0.50–0.71 kWh/m2, and 0.78–0.91, respectively.

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