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检索条件"任意字段=2012 IEEE International Conference on Control System, Computing and Engineering, ICCSCE 2012"

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Evaluation of scalability of Hybrid Wireless Mesh Protocol in ieee 802.11

Evaluation of scalability of Hybrid Wireless Mesh Protocol i...

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international conference on Advances in ICT for Emerging Regions

作者： S.J. Sooriyaarachchi W.A.C. Fernando C.D. Gamage Department of Computer Science and Engineering University of Moratuwa Sri Lanka Faculty of Engineering and Physical Sciences University of Surrey Guildford Surrey UK

Mobile ad-hoc networks (MANETs) enable ubiquitous computing with wide availability of smart mobile devices and applications. However, robust and lightweight protocols are yet to be implemented for multihop communication. The latest ieee 802.11 standard released in 2012 captures the concept of multihop MANETs under Wireless Mesh Networks and proposes Hybrid Wireless Mesh Protocol (HWMP) as the default multihop path selection protocol. Previous studies on the performance of HWMP have not addressed operating scenarios of mass mobility (to model human user mobility), non-availability of root nodes (to model absence of infrastructure support) and a wide span of node densities (to model different application scenarios). This paper analyses the scalability of HWMP in a MANET of ieee 802.11 standard wireless mesh stations that move at human walking speeds. The end-to-end delay, data packet delivery ratio and path selection control overhead are evaluated in the presence of random waypoint and mass mobility models for increasing node densities. The simulation results show that there are no significant variations in any of the above important performance metrics among static, random waypoint mobility and mass mobility models. Furthermore, HWMP shows almost a linear path selection control overhead profile for increasing node densities while the packet delivery ratio and the end-to-end delay reaches a steady level as node density increases up to about 250 nodes.

关键词： Ad hoc networks Mobile computing Yttrium Bit rate

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Notice of Violation of ieee Publication Principles: Question answering system: A survey

Notice of Violation of IEEE Publication Principles: Question...

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international conference on Smart Technologies and Management for computing, Communication, controls, Energy and Materials (ICSTM)

作者： Ashish Mathur M.T.U. Haider Computer Science & Engineering Deptt. National Institute of Technology Patna Patna India

Notice of Violation of ieee Publication Principles "Question Answering system: A Survey," by Ashish Mathur and M. T. U. Haider, in the Proceedings of the international conference on Smart Technologies and Management for computing, Communication, controls, Energy and Materials (ICSTM), May 2015, pp. 47-57 After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of ieee's Publication Principles. This paper duplicates the content and figures from the paper cited below. The original content was copied without attribution (including appropriate references to the original author(s) and/or paper title) and without permission. Due to the nature of this violation, reasonable effort should be made to remove all past references to this paper, and future references should be made to the following article: "The Question Answering systems: A Survey" by Ali Mohamed Nabil Allam and Mohamed Hassan Haggag in the international Journal of Research and Reviews in Information Sciences (IJRRIS)Vol. 2, No. 3, September 2012, pp. 211-221 Question answering (QA) is new research domain in the field of Information Science comes into focus in last few decades. Question answering systems are pretty much different from web based search engines which works on the principal of Information Retrieval (IR), however QA systems works on the concept of Information Retrieval (IR) as well as Information Extraction (IE). Web based search engines takes user's query in natural language and responds the same with references and URLs of related documents and websites, but they failed when a user wants precise answer for their query. By considering these limitations of search engines people finds that there is a need for such a system which answer the user's query rather responds with references or URLs of related documents. User should be provided with the precise answer to their question. They are one st

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A Voltage Stability Preventive control Approach based on Generator Reactive Power Reserve Sensitivities

A Voltage Stability Preventive Control Approach based on Gen...

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2015 international conference on Electrical, Automation and Mechanical engineering(EAME 2015)

作者： J.Zhao Y.Rao College of Energy and Electrical Engineering Hohai University

ISBN: (纸本)9781510806528

The generator reactive power reserve is closely related to the power system voltage *** voltage stability margin can be effectively improved by improving the critical generator reactive power reserves.A static stability preventive control approach based on reactive power reserve sensitivities is *** proposed approach can be divided into a sensitivity computation sub-problem and a sensitivity-based quadratic programming optimization *** the previous sub-problem,critical generators are identified by calculating the load margin and sensitivities of generator reactive power reserve are *** the latter sub-problem,the most effective control actions are selected to improve the computation efficiency of quadratic optimization *** results on ieee 30-bus power system indicate that the proposed method is effective.

关键词： generator reactive power reserve preventive control generator exciting current limit reactive power reserve sensitivity quadratic programming

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Screening Method Research on Main Water Polluters of Liao River in Jinzhou

Screening Method Research on Main Water Polluters of Liao Ri...

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2015 4th international conference on Mechatronics,Materials,Chemistry and Computer engineering(ICMMCCE 2015)

作者： Xiang He Runlei Cai Xuejiao Feng Fan Wang School of Municipal and Environmental Engineering Shenyang Jianzhu University

ISBN: (纸本)9781510817371

The water polluters of Liao river basin in Jinzhou is elected preliminarily basing on the basin of the key water polluters of Jinzhou city, combining with the principle of polluters screening and the computing method of equal standard pollution load, optimizing and assessing the indexes which involves the discharge of waste water, the discharge destination of waste water,the pollution discharge of COD and the pollution discharge of NH3-N etc. Then the primary results are further elected with the method of hierarchy analysis basing on the standard layer indexes which involves the result of equal standard pollution load, the discharge destination of waste water,the industry category,the discharge method of waste water and the level of pollution source management. Finally, the rankings are compared and the final selection list is *** method provides technical support of the control of both the concentration and total quantity of the water pollution source, and the implementation of monitoring of total pollutant quantity.

关键词： water polluters equal standard pollution load analytic hierarchy process controlling totalquantity

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Screening Method Research on Main Water Polluters of Liao River in Fushun

Screening Method Research on Main Water Polluters of Liao Ri...

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2015 4th international conference on Mechatronics,Materials,Chemistry and Computer engineering(ICMMCCE 2015)

作者： YongYong Wang Xiang He Runlei Cai Fan Wang School of Municipal and Environmental Engineering Shenyang Jianzhu University

The water polluters of Liao river basin in Fushun is elected preliminarily basing on the basin of the key water polluters of Fushun city, combining with the principle of polluters screening and the computing method of equal standard pollution load, optimizing and assessing the indexes which involves the discharge of waste water, the discharge destination of waste water,the pollution discharge of COD and the pollution discharge of NH3-N etc. Then the primary results are further elected with the method of hierarchy analysis basing on the standard layer indexes which involves the result of equal standard pollution load, the discharge destination of waste water,the industry category,the discharge method of waste water and the level of pollution source management. Finally, the rankings are compared and the final selection list is *** method provides technical support of the control of both the concentration and total quantity of the water pollution source, and the implementation of monitoring of total pollutant quantity.

关键词： water polluters equal standard pollution load analytic hierarchy process controlling total quantity

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A Parallel Cross-Language Retrieval system for Patent Documents

A Parallel Cross-Language Retrieval System for Patent Docume...

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2015 6th ieee international conference on Software engineering and Service Science(ICSESS 2015)

作者： Xin Shen Heyan Huang Lingzhi Li Yonggang Huang Beijing Engineering Research Center of High Volume Language Information Processing & Cloud Computing Application Beijing Institute of Technology Overhaul Branch Beijing Electric Power Company

In order to help people obtain useful information from patent documents in different languages. This paper proposes a cross-language retrieval system to search Chinese and English patent documents simultaneously. This system consists of query translation module, document retrieval module and user interaction module. Query translation module is used to translate query based on bilingual dictionaries. Document retrieval module consists of monolingual retrieval system using standard vector space model. In order to retrieve in highly parallel, we use the Map Reduce model to calculate the similarity. User interaction module provides users with interactive mechanism used to improve the retrieval accuracy in the system. It contains two parts: the second translation and relevance feedback. The experimental results show that our system has good performance.

关键词： Patent document cross-language information retrieval parallel retrieval Hadoop

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Research and Experiment on Precision Seeding control system of Maize Planter

Research and Experiment on Precision Seeding Control System ...

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The 9th international conference on Computer and computing Technologies in Agriculture (CCTA 2015)

作者： Nana Gao Weiqiang Fu Zhijun Meng Xueli Wei You Li Yue Cong Beijing Research Center of Intelligent Equipment for Agriculture

ISBN: (纸本)9783319483566

A precision seeding control system was developed based on GPS,which could achieve real-time adjustment of seeding speed to ensure seed distribution uniformity. Parameters including seeding rate, row spacing and hole number of seed metering device were entered by users which were transferred by CAN bus to the controller. Its electronic speed control system could work out rotational speed of sowing axis matching with operating speed of tractor automatically. Seed metering device was driven by the hydraulic motor. The field experiment results demonstrated that rate of spacing of normally sown seeds and variable coefficient of this system comparing to traditional land wheel driven planter was relatively 94.1 %, 24.6 % and 89.1 %, 33.1 % while operating speed was 5.9 km/h. If the variation range of seeding spacing shrinks 40 %according the standard request, rate of spacing of normally sown seeds of precision seeding control system was 89.7 % exceeded the traditional land wheel 23 %.

关键词： Precision seeding control system GPS speed measurement Hydraulic motor Maize planter Distribution uniformity of seeds control systems seed inoculation Operating speed Hydraulic motors metering device speed control system timing adjustment Seeds Spacing manipulated variable Precision

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Research and Application on Protected Vegetables Early Warning and control of Mobile Client system

Research and Application on Protected Vegetables Early Warni...

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The 9th international conference on Computer and computing Technologies in Agriculture (CCTA 2015)

作者： Guogang Zhao Haiye Yu Lianjun Yu Guowei Wang Yuanyuan Sui Lei Zhang Linlin Wang Jiao Yang College of Biological and Agricultural Engineering Jilin University Key Laboratory of Bionic Engineering Ministry of Education Changchun City Academy of Agricultural Sciences School of Information Technology Jilin Agricultural University Sixth Middle School in Changchun

ISBN: (纸本)9783319483535

Experimental vegetable production is greatly influenced by many environmental factorsThere is urgent need to supervise its air temperature and humidity, soil temperature and humidity in the facilities information such as realtime monitoring, and timely early warning and control, in case of irreparable damageThis paper adopts the IOT technology to design and develop mobile client system which is used to make warnings and protect vegetables in order to realize real-time monitoring in the process of vegetable production in the aspects of timely warning of environmental information and control.

关键词： Protected vegetables The internet of things Early warning control system Mobile client terminal

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LWCS: A Large-scale Web Page Classification system Based on Anchor Graph Hashing

LWCS: A Large-scale Web Page Classification System Based on ...

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2015 6th ieee international conference on Software engineering and Service Science(ICSESS 2015)

作者： Yi Zheng Chengcheng Sun Chengzhang Zhu Xv Lan Xiang Fu Weihong Han College of Computer National University of Defense Technology

Nowadays, while we are enjoying the convenience brought by such a huge repository of online web information, we may come across difficulties in finding the web pages we want related to particular information we are searching for. Hence, it is essential to classify web documents to facilitate the search and retrieval of pages. Existing algorithms work well with a small quantity of web pages, whereas, they become slow and even noneffective while dealing with a large scale of web pages. Recently,some of these algorithms were adapted to distributed platforms which boosted their classification speeds effectively. However, due to high dimensions of web page features, the parallel classifiers were still trained with limited capacity training sets. In addition,these methods didn't improve the classification itself, merely boosted by high computing performance of distributed *** oriented to large-scale web page classification, we propose to integrate anchor graph hashing with K-Nearest Neighbour(KNN)classifier to reduce the pages' original feature dimensions. The hash value of each page is used for training and classification instead of the original vectors. Experimental comparison with the original KNN on a large dataset demonstrates the efficacy of our proposed method.

关键词： large-scale web page classification Chinese web page classification automatic classification anchor graph hashing k-nearest neighbours

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LYAPUNOV-BASED OUTPUT FEEDBACK control OF HYPERSONIC VEHICLE 3

LYAPUNOV-BASED OUTPUT FEEDBACK CONTROL OF HYPERSONIC VEHICLE

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3rd ieee international conference on Cloud computing and Intelligence systems (CCIS)

作者： Xu, Haijing Jia, Yingmin Beihang Univ BUAA Res Div 7 Beijing 100191 Peoples R China Beihang Univ BUAA Dept Syst & Control Beijing 100191 Peoples R China

ISBN: (纸本)9781479947195

In this paper, an output feedback controller is designed for the longitudinal dynamics of a hypersonic vehicle, under the restriction that only partial information can be measured. The high gain observer (HGO) is utilized to estimate the signals for immeasurable derivatives of the vehicle's velocity and altitude, and a radial basis neural network (RBNN) based feedforward function is designed to compensate for the model uncertainties. A Lyapunov-based comprehensive stability analysis of the closed-loop system is presented, and the proposed control law is proved to be yielding semi-global uniformly ultimately bounded, while keeping all the closed-loop signals bounded. Numerical simulation results are also presented to validate the control design.

关键词： Hypersonic vehicle Output feedback control High gain observer Radial basis neural network

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