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16th International Conference on Evaluation & Assessment in Software engineering (EASE 2012)

作者： Federico Tomassetti Marco Torchiano Alessandro Tiso Filippo Ricca Gianna Reggio Department of Control and Computer Engineering Politecnico di Torino Italy Department of Computer and Information Science Universitá di Genova Italy

ISBN: (纸本)9781622762538

Background: The main claimed advantage of model driven engineering is the improvement of productivity. However, little information is available about its actual usage during software development and maintenance in the industry. Objective: The main aim of this work is investigating the level of maturity in the usage of software models and model driven engineering in the Italian industry. The perspective is that of software engineering researchers. Method: First, we conducted an exploratory personal opinion survey with 155 Italian software professionals. The data were collected with the help of a web-based on-line questionnaire. Then, we conducted focused interviews with three software professionals to interpret doubtful results. Results: Software modelling is a very relevant phenomenon in the Italian industry. Model driven techniques are used in the industry, even if (i) only for a limited extent, (ii) despite a quite generalized dissatisfaction about available tools and (iii) despite a generally low experience of the IT personnel in such techniques. Limitations: Generalization of results is limited due to the sample size. Moreover, possible self-exclusion from participants not interested in modelling could have biased the results. Conclusion: Results reinforce existing evidence regarding the usage of software modelling and (partially of) model driven engineering in the industry but highlight several aspects of immaturity of the Italian industry.

关键词： Model driven engineering computer software Maturity Modeling computer programs Public Opinion Polls industries immaturity Italian Italian Software design exclusion

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Fuzzy Logic-Based Scheme for Load Balancing in Grid Services

Fuzzy Logic-Based Scheme for Load Balancing in Grid Services

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Conference on computer science and Software engineering(CSSE 2012)

作者： Tarek Helmy Hamdi Al-Jamimi Bashar Ahmed Hamzah Loqman Information and Computer Science Department College of Computer Science and EngineeringKing Fahd University of Petroleum and Minerals “On leave from College of Engineering Department of Computers Engineering & Automatic ControlTanta University

Load balancing is essential for efficient utilization of resources and enhancing the responsiveness of a computational grid, especially that hosts of services most frequently used, i.e. food, health and nutrition. Various techniques have been developed and applied;each has its own limitations due to the dynamic nature of the grid. Efficient load balancing can be achieved by an effective measure of the node's/cluster's utilization. In this paper, as a part of an NSTIP project # 10-INF1381-04 and in order to assess of FAQIH framework ability to support the load balance in a computational grid that hosts of food, health and nutrition inquire services. We detail the design and implementation of a proposed fuzzy-logic-based scheme for dynamic load balancing in grid computing services. The proposed scheme works by using a fuzzy logic inference system which uses some metrics to capture the variability of loads and specifies the state of each node per a cluster. Then, based on the overall nodes' states, the state of the corresponding cluster will be defined in order to assign the newly arrived inquires such that load balancing among different clusters and nodes is accomplished. Many experiments are conducted to investigate the effectiveness of the proposed fuzzy-logic-based scheme to support the load balance where the results show that the proposed scheme achieves really satisfactory and consistently load balance than of other randomize approaches in grid computing services.

关键词： Fuzzy Logic Load Balancing Grid Computing.

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Development of a cloud-computing-based equipment monitoring system for machine tool industry

Development of a cloud-computing-based equipment monitoring ...

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2012 IEEE International Conference on Automation science and engineering: Green Automation Toward a Sustainable Society, CASE 2012

作者： Hung, Min-Hsiung Lin, Yu-Chuan Quoc Huy, Tran Yang, Haw-Ching Cheng, Fan-Tien Department of Computer Science and Information Engineering Chinese Culture University Taipei Taiwan Institute of Manufacturing Information and Systems National Cheng Kung University Tainan Taiwan Institute of System Information and Control National Kaohsiung First University of Science and Technology Kaohsiung Taiwan

ISBN: (纸本)9781467304283

This paper aims to present the design of a cloud computing-based equipment monitoring system (EMS), called CCEMS, for the CNC machine tool industry to illustrate the paradigm shift of EMSs from basing on the Internet to basing on the cloud. In the CCEMS, Graphical User Interface (GUI) plays an important role that allows users to interact with the system for controlling and operating equipment, monitoring equipment performance and statuses, detecting and diagnosing equipment faults, conjecturing production quality and precision of equipment, and so on. To overcome the shortcomings of traditional Web GUIs, this paper proposes a novel Web application implementation framework, called NWAIF, for the CCEMS, by using Service-Oriented Architecture (SOA) and Rich Internet Application (RIA) technology. Finally, a paradigm CCEMS for monitoring CNC machine tools is constructed and used to validate the efficacy of the CCEMS and NWAIF. Testing results show that the paradigm CCEMS meets the desired functional requirements and the GUIs created by using the proposed NWAIF is superior to traditional Web-based GUIs in terms of shorter response times to complete the testing operations. © 2012 IEEE.

关键词： Graphical user interfaces

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Research on Stochastic Stability of Model Based Networked control System

Research on Stochastic Stability of Model Based Networked Co...

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The 24th Chinese control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)

作者： Fengxia Xu Qunhong Tian Zhongda Lu Wu Ouyang College of Computer and Control Engineering Qiqihar University Qiqihar 161006 China Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China

In this paper, We analysis on the Model-Based Networked control System where the plant is continuous and the states are available (full state feedback). we consider the problem of having a sensor that is connected to the actuator/controller by a network. Two types of stochastic stability are discussed, namely Almost Sure or Probability-1 Asymptotic Stability and Mean Square or Quadratic Asymptotic Stability. The stochastic stability of NCS is analyzed and proved.

关键词： Networked control System stochastic stability Mean Square Stability Quadratic Asymptotic Stability

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Hierarchical and distributed discrete event control of manufacturing processes

Hierarchical and distributed discrete event control of manuf...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Olaf Stursberg Control and System Theory Department of Electrical Engineering and Computer Science University of Kassel Kassel Germany

The supervisory controllers used in manufacturing processes to establish nominal sequences of production steps can theoretically be synthesized based on the supervisory control theory (SCT). The fact, that in practice manual design procedures are preferred over the SCT, is (among other reasons) due to the fact that the models used in the SCT are of an abstract type rather than reflecting the signal flow within a discretely controlled process, and that sets of permissible behaviors are obtained rather than selected (optimal) behaviors within this set. This paper proposes a modeling and synthesis scheme for discrete control which aims at retaining the closed loop structure of the controlled process. An algebraic representation of the discrete event dynamics is chosen to enable the transfer of concepts from continuous control to the supervisory control task. In addition, the scheme considers that the plant to be controlled often comprises continuous quantities (from which events need to be extracted), and that larger manufacturing processes typically have a modular and hierarchical structure.

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Asynchronous dual descent for separable network optimisation

Asynchronous dual descent for separable network optimisation

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American control Conference (ACC)

作者： Olivier Bilenne Department of Electrical Engineering and Computer Science Control Systems Group Technical University of Berlin Germany

This study is concerned with the class of convex network optimisation problems forming the Network Utility Maximisation (NUM) framework. Dual decomposition is commonly used to decompose the NUM problem into smaller problems that can be solved locally by the nodes. The typical dual descent techniques suffer however from slow convergence and require the distributed computations to be synchronised. Yet global node synchronisation is a difficult task in self-organised ad-hoc networks, where preference is given to asynchronous protocols. The algorithm proposed in this study proceeds sequentially and asynchronously for each node to local projected gradient descents, combined with local step-size selection routines of the type Armijo. Global convergence is ensured provided that the gradient of the dual function is Lipschitz continuous. Scaling the gradient to the local Newton directions accelerates the process and guarantees linear convergence. The proposed algorithm is tested on the problem of maximum-lifetime routing of a wireless sensor network.

关键词： Convergence Optimization Vectors Nickel Mercury (metals) Symmetric matrices Acceleration

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Using 10–23 DNAzyme to solve simple 0–1 programming problem

Using 10–23 DNAzyme to solve simple 0–1 programming proble...

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International Conference on Information science and Technology (ICIST)

作者： Fengyue Zhang Wenbin Liu Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan China College of Computer Science and Engineering Wenzhou University Wenzhou Zhejiang China

10-23 DNAzyme can be used as a logical operation due to its amputation mRNA at the AU point. In this paper, a new DNA computing model using 10-23 DNAzyme was presented to solve 0-1 programming problem, which is an important problem in operation and has very widespread applications. Benefited from vast parallelism, extraordinary information density and easy manipulation of solution-based DNA computation, the designed model further simplified the read-out steps by DNAzyme. The result, verified by computer simulation, suggested the great potential of DNA computing on solving complex programming problems.

关键词： DNA Programming Computational modeling DNA computing Biological system modeling Libraries

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Time-varying linear and nonlinear parametric model for Granger causality analysis

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Physical Review E 2012年第4期85卷 041906-041906页

作者： Yang Li Hua-Liang Wei Steve A. Billings Xiao-Feng Liao Department of Computer Science and Engineering Chongqing University China Department of Automatic Control and Systems Engineering The University of Sheffield Mapping Street S1 3JD Sheffield United Kingdom

Statistical measures such as coherence, mutual information, or correlation are usually applied to evaluate the interactions between two or more signals. However, these methods cannot distinguish directions of flow between two signals. The capability to detect causalities is highly desirable for understanding the cooperative nature of complex systems. The main objective of this work is to present a linear and nonlinear time-varying parametric modeling and identification approach that can be used to detect Granger causality, which may change with time and may not be detected by traditional methods. A numerical example, in which the exact causal influences relationships, is presented to illustrate the performance of the method for time-varying Granger causality detection. The approach is applied to EEG signals to track and detect hidden potential causalities. One advantage of the proposed model, compared with traditional Granger causality, is that the results are easier to interpret and yield additional insights into the transient directed dynamical Granger causality interactions.

关键词： Numerical methods

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An embedded co-AdaBoost and its application in classification of software document relation

An embedded co-AdaBoost and its application in classificatio...

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2012 8th International Conference on Semantics, Knowledge and Grids, SKG 2012

作者： Liu, Jin Li, Juan Xie, Yuan Lei, Jeff Hu, Qiping State Key Lab. of Software Engineering Computer School Wuhan University China State Key Lab. of Intelligent Control and Management of Complex Systems Institute of Automation CAS China Department of Computer Science and Engineering University of Texas Arlington TX United States International School of Software Wuhan University China

ISBN: (纸本)9780769547947

To enhance classification performance by making use of easily available unlabelled data to overcome the scarcity of labelled data, this paper proposes an Embedded Co-Adaboost algorithm that integrates multi-view learning into the Adaboost learning framework and at the same time leverages the advantages of Co-training algorithm for performance enhancement. Experimental results demonstrate the effectiveness of the proposed algorithm in terms of the convergence rate, the accuracy, and the steady performance as compared to the original AdaBoost algorithm, without relying on redundant and sufficient feature sets. As a algorithm application in software engineering, the Embedded Co-AdaBoost has been applied to the classification of software document relations to improve the quality of the architecture design documents and the reusability of design knowledge. © 2012 IEEE.

关键词： Reusability

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Design of multiple anti-windup loops for multiple activations

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science China(Information sciences) 2012年第9期55卷 1925-1934页

作者： WU XiongJun 1,2 & LIN Zongli 3,1 1 department of Automation,Shanghai Jiao Tong University,and Key Laboratory of System control and Information Processing,Ministry of Education of China,Shanghai 200240,China 2 No.802 Institute of Shanghai Academy of Space Flight Technology,the Eighth Academy of China Aerospace science and Technology Corporation,Shanghai 200090,China 3 Charles L.Brown department of Electrical and computer engineering,University of Virginia,P.O.Box 400743,Charlottesville,VA 22904-4743,USA Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China No. 802 Institute of Shanghai Academy of Space Flight Technology the Eighth Academy of China Aerospace Science and Technology Corporation Shanghai China Charles L. Brown Department of Electrical and Computer Engineering University of Virginia Charlottesville USA

This paper considers anti-windup design for linear systems subject to actuator *** anti-windup gains are designed for activations immediately at the occurrence actuator saturation,after the saturation has reached a certain level and in anticipation of the occurrence of saturation,*** design is based on the minimization of L 2 gain from the disturbance to the controlled output of the resulting closed-loop *** anti-windup scheme involves a single anti-windup loop for immediate activation.A recent innovation is to design a single anti-windup loop for delayed or anticipatory activation,as well as to design two anti-windup gains,one for immediate activation and one for delayed *** design of three anti-windup gains for three different activations is shown through simulation to lead to significant further performance improvement over the previous activation schemes.

关键词： actuator saturation anti-windup anticipatory activation delayed activation L 2 gain nonlinear control

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