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检索条件"任意字段=The 2010 IEEE International Conference on Progress in Informatics and Computing"

共 1879 条记录，以下是41-50 订阅

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Research on ZigBee based Wireless Network System Core Techniques: A Theoretical Approach 3

Research on ZigBee based Wireless Network System Core Techni...

引用

3rd ieee international conference on progress in Informatcs and computing (ieee PIC)

作者： Xu, Peifu Zhang, Xun China Tobacco Zhejiang Ind Co LTD Hangzhou 310009 Zhejiang Peoples R China

ISBN: (纸本)9781467390880

With the bursting and rapid development of computational science and ZigBee engineering related techniques, it is becoming capital research area. The network of wireless sensors which is to be considered in this research deals with fixed and mobile wireless sensors and treated with mesh and tree topologies. This paper takes up the effect of Acknowledgement technique to search for better throughput and end to end delay of wireless sensors network. The results show that the acknowledgement technique has different effects on the performance of the network depending on the type of topology and state of sensors (fixed or mobile). The usage of Acknowledgement gives better performance in terms of throughput and end to end delay for tree topology with mobile stations, and mesh topology with fixed stations. Further potential research topics are also discussed with case study and simulation.

关键词： wireless network system ZigBee technique ieee standards

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Invariant Lighting Hand Posture Classification

Invariant Lighting Hand Posture Classification

引用

the 2010 ieee international conference on progress in informatics and computing

作者： Thi-Thanh-Hai Tran Thi-Thanh-Mai Nguyen MICA International Research Center Hanoi University of Science and Technology VietNam

ISBN: (纸本)9781424467860

Hand posture classification is a key problem for many human computer interaction ***,this is not a simple *** this paper,we propose to decompose the hand posture classification problem into 2 *** the first step,we detect skin regions using a very fast algorithm of color segmentation based on thresholding *** segmentation is robust to lighting condition thank to a step of color normalization using neural *** the second step, each skin region will be classified into one of hand posture class using Cascaded Adaboost *** contributions of this paper are:(i) By applying a step of color normalization,the posture classification rate is significantly improved under varying lighting condition;(ii) The cascaded Adaboost technique has been studied for the problem of face detection(2 classes).In this paper, it will be studied and evaluated in more detail in a problem of classification of hand postures(multi-classes).

关键词： Hand posture classification Cascaced Adaboost Color normalization Neural network Lighting invariance

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An Importance-Based Approach for Mining Approximate Roles 5

An Importance-Based Approach for Mining Approximate Roles

引用

2017 international conference on progress in informatics and computing(PIC)

作者： Lei Sun Ning Pan Liangsheng He Zhiqiang Zhu Zhengzhou Information Science and Technology Institute

ISBN: (纸本)9781538619797;9781538619780

Role Based Access Control(RBAC) has become the de facto access control model in recent *** order to deploy RBAC,organizations have to define a set of roles from the existing user-permission assignment relationships,the process of which is called role *** have been many role mining algorithms proposed to devise a complete and correct set of roles which may not be necessary because the user-permission assignment(UPA) relationships are *** this paper,we define the evaluation criterion and the 8-Approx Important Role Mining Problem(δ-IRMP) which is proved to be NP-complete first,then we propose a heuristic bottom-up role mining approach that reduces the total number of roles with important assignments and permissions ***,we carry out the experiments with public datasets to evaluate our approach and the experimental results compared with other algorithms demonstrate the effectiveness of our proposed approach.

关键词： RBAC role mining evaluation approximate heterogeneity

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Capacities-based distant-water fishery cold chain network design considering yield uncertainty and demand dynamics 5

Capacities-based distant-water fishery cold chain network de...

引用

2017 international conference on progress in informatics and computing(PIC)

作者： Xiangqun Song Qianli Ma Wenyuan Wang Yun Peng State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology

ISBN: (纸本)9781538619797;9781538619780

In distant-water fishing industry, production, supply and distribution activities are realized in a dynamic environment including uncertainties of resources in fishing grounds and demands from global markets. Moreover, the capacity of the port cold storage is of great importance to the cold chain network as most of catch is handled and temporarily stored at seaports. Here, a multi-product, three-echelon and multiperiod network model is applied to a distant-water fishery cold chain design problem based on capacities. This network-design includes optimal cold storage facility locations and optimal flow amounts. And a two-stage stochastic programming method is used to handle the uncertainties.

关键词： cold storage capacity network optimization distant-water fishery uncertainty two-stage stochastic programming

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Distribution Law of User Comments on Hot News 5

Distribution Law of User Comments on Hot News

引用

2017 international conference on progress in informatics and computing(PIC)

作者： Hong Zong Xiuzhi Wu Chunxiang Xue Fen Chen Nanjing University of Science and Technology Jiangsu Collaborative Innovation Center of Social Safety Science and Technology

ISBN: (纸本)9781538619797;9781538619780

The distribution of online news comments can reveal the rules of users behavior and laws of regional association, and facilitate governance of website society. This study takes comments of hot news as research objectives, and derives futures of comment distribution from three aspects, i.e., quantity, time and spa psychological rhythms and time arrangement. And the space of comment distribution is associated with regional economic levels, geographical locations and statuses. The study also finds that news with different themes or events has remarkable differences in comment distributions.

关键词： online news comments user comments distribution law

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The Study of Image Feature Extraction and Classification 5

The Study of Image Feature Extraction and Classification

引用

2017 international conference on progress in informatics and computing(PIC)

作者： Jingjin Guo Lizhen Liu Wei Song Chao Du Xinlei Zhao Information and Engineering College Capital Normal University Foreign Language College Capital Normal University

ISBN: (纸本)9781538619797;9781538619780

As we all know, research continues in the areas of image classification development in computer vision. People eagerly hope to achieve a perfect classification accuracy, however,many results of these experiments are less than satisfactory because of many complex factors. Therefore, in order to find these factors and improve the classification accuracy, we describe the details of classification methods with logistic regression and support vector machine algorithm, then discuss the impact of different methods on classification results and the factors that affect the classification accuracy in one *** that we briefly introduce the image feature extraction which plays a necessary role of image classification.

关键词： feature extraction logistic regression SVM image classification

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A Rule-based Method for Detecting the Missing Common Requirements in Software Product Line 5

A Rule-based Method for Detecting the Missing Common Require...

引用

2017 international conference on progress in informatics and computing(PIC)

作者： Jianzhang Zhang Yinglin Wang Wentao Wang Nan Niu School of Information Management and Engineering Shanghai University of Finance and Economics Department of EECS University of Cincinnati

ISBN: (纸本)9781538619797;9781538619780

The problem of incomplete requirements has been one of the most critical issues in requirements *** requirements in the software product line establish the foundation to implement the core functionalities of a family of software *** this paper,we propose a framework to detect the missing common requirements in the context of software product *** framework mainly consists of two parts:a set of rules to extract the common requirements,the dependency relationships among them and a procedure for detecting the omission in an incoming set of *** experiments are conducted on a group of medical applications to validate our *** results indicate that our proposed framework is effective.

关键词： requirements engineering missing requirements rule-based software product line

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Scalable stream Bayes classification based on Dirichlet prior 5

Scalable stream Bayes classification based on Dirichlet prio...

引用

2017 international conference on progress in informatics and computing(PIC)

作者： OUYANG Bina YU Yanhua School of Computer Science Beijing University of Posts and Telecommunications

ISBN: (纸本)9781538619797;9781538619780

Learning from fast data stream is one of the most challenging tasks in data stream mining. The fact that data streams are unbounded sequences, highlights exclusive challenges in contrast to classifiers from batch data. Most of methods aren't naturally parallel and thus their scalability is limited. This paper proposes a scalable data stream Bayes classifier utilizing a new estimation(DIB). The new estimation takes conjugate Dirichlet prior as parameter's prior distribution and thus improves the predictive accuracy. Meanwhile, this paper proposes a new distributed implementation of DIB on Flink. Experiments show that DIB classifier significantly outperforms Na?ve Bayes in terms of accuracy. Also, the experiment proves parallel DIB running on Flink enhances the throughput and reduces execution time.

关键词： Scalable Stream Classification Conjugate Dirichlet Prior Bayes Inference Flink

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A Parallel Algorithmic Approach to Simulate Acoustical Fields with Respect to Scattering of Sound due to Reflections 4

A Parallel Algorithmic Approach to Simulate Acoustical Field...

引用

4th ieee international conference on progress in informatics and computing (ieee PIC)

作者： Chusov, Andrey Lysenko, Alexey Statsenko, Lubov Kuligin, Sergey Unru, Petr Rodionov, Alexandr Far Eastern Fed Univ Sch Engn Vladivostok Russia

ISBN: (纸本)9781509034840

The article presents an algorithmic model of sound propagation in rooms to run on parallel and distributed computer systems. This algorithm is used by the authors in an implementation of an adaptable high-performance computer system simulating various fields and providing scalability on an arbitrary number of parallel central and graphical processors as well as distributed computer clusters. Many general-purpose computer simulation systems have limited usability when it comes to high-precision simulation associated with large numbers of elementary computations due to their lack of scalability on various parallel and distributed platforms. The more the required adequacy of the model is, the higher the numbers of steps of the simulation algorithms are. Scalability permits a use hybrid parallel computer systems and improves efficiency of the simulation with respect to adequacy, time consumptions, and total costs of simulation experiments. The report covers such an algorithm which is based on an approximate superposition of acoustical fields and provides adequate results, as long as the used equations of acoustics are linear. The algorithm represents reflecting surfaces as sets of vibrating pistons and uses the Rayleigh integral to calculate their scattering properties. The article also provides a parallel form of the algorithm and analysis of its properties in parallel and sequential forms.

关键词： Computer simulation high-performance computing parallel algorithms problem-oriented programming

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Research progress of Security Protection for Dispatching Automation System 6

Research Progress of Security Protection for Dispatching Aut...

引用

ieee international conference on progress in informatics and computing (PIC)

作者： Tang, Yunshan Zou, Nibin Shi, Yangyang Wang, Xingya Nari Grp Corp State Grid Elect Power Res Inst Nanjing Jiangsu Peoples R China Nanjing Univ State Key Lab Novel Software Technol Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781538676721

Dispatching Automation System (DAS) has been widely used in many critical areas such as power dispatch, transport dispatch, and water dispatch. It provides a reliable guarantee for the development of social economy, which in turn puts forward higher quality requirements for DAS. Thus, security protection, which provides a basis for safe and stable operation, plays a crucial role in DAS. Although a number of studies focus on improving the protective ability of security on DAS, there is no comprehensive research on these techniques. To fill this gap, we conduct a preliminary research on DAS protection. In this paper, we present the DAS security risk taxonomy and reviews the corresponding protective works. Moreover, we also point out the future directions in DAS protection.

关键词： dispatching automation system security risk security protection

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