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2006 IEEE computer Society Conference on computer Vision and Pattern Recognition, CVPR 2006

作者： Parag, Toufiq Elgammal, Ahmed Mittal, Anurag Dept. of Computer Science Rutgers University Piscataway NJ 08854 Real-time Vision and Modeling Dept. Siemens Corporate Research Princeton NJ 08540 Dept. of Computer Science and Automatic Control University of Alexandria Egypt Dept. of Computer Science and Engg IIT Madras Chennai India

ISBN: (纸本)0769525970

Background subtraction is a widely used paradigm to detect moving objects in video taken from a static camera and is used for various important applications such as video surveillance, human motion analysis, etc. Various statistical approaches have been proposed for modeling a given scene background. However, there is no theoretical framework for choosing which features to use to model different regions of the scene background. In this paper we introduce a novel framework for feature selection for background modeling and subtraction. A boosting algorithm, namely RealBoost, is used to choose the best combination of features at each pixel. Given the probability estimates from a pool of features calculated by Kernel Density Estimate (KDE) over a certain time period, the algorithm selects the most useful ones to discriminate foreground objects from the scene background. The results show that the proposed framework successfully selects appropriate features for different parts of the image. © 2006 IEEE.

关键词： Object recognition

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Methods of adjusting MPLS network policies

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UPB Scientific Bulletin, Series C: Electrical Engineering 2009年第3期71卷 121-132页

作者： Rughinis, Razvan Deaconescu, Razvan Dept. of Automatic Control and Computer Science University POLITEHNICA of Bucharest Romania

This paper discusses adjustment strategies for MPLS networks, taking into account users demands. Recent developments in MPLS technology are used to propose a new method for analyzing network adjustments, on four dimensions: security, error recovery, Quality of Service and network integration - with a special focus on Grid systems. Two options are evaluated for each dimension: internal differentiation and inter-dimension compensation.

关键词： Quality of service

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FaitH: Trusted Chain Network for Non-Cooperative D2D Communication Underlying HetNet 13

FaitH: Trusted Chain Network for Non-Cooperative D2D Communi...

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13th International Conference on Electronics, computers and Artificial Intelligence, ECAI 2021

作者： Gupta, Rajesh Rathod, Tejal Reebadiya, Dakshita Tanwar, Sudeep Bhattacharya, Pronaya Pricop, Emil Nirma University Dept. of Computer Science and Engg. Ahmedabad India Petroleum-Gas University of Ploiesti Automatic Control Comp. and Elect. Dept Ploiesti Romania

ISBN: (纸本)9781665425346

The requirement of Device-to-device (D2D) communication is increasing day-by-day for rapid data transmission by bypassing the base station. Communication can be established either through cooperative devices or non-cooperative devices. Cooperative devices relay the information to the weak user, but the non-cooperative behavior of some intermediate nodes leads to malicious activities like fraud, misguide, and data-threat. In non-cooperative communication, the source node directly transmits data to the destination node (with a direct link) to eliminate the intermediate nodes for higher trust. But, such communications are vulnerable to various security and privacy threats such as spoofing, data modification, etc. due to the long-distance coverage of signal from source to destination. To overcome these security issues, this paper proposes a blockchain-based trusted network for non-cooperative D2D communication in a heterogeneous network, FaitH. Here, the devices are communicating via a secured blockchain network, where all the involved peer devices validate each transmission of data. Blockchain records each activity performed by any D2D node in communication. It helps to detect the malicious behavior of any D2D user. Each device is connected to a smart contract having some predefined rules. FaitH ensures secure, trusted, and reliable communication over traditional systems. © 2021 IEEE.

关键词： Smart contract

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Petri net approach for deadlock prevention in robot planning

Petri net approach for deadlock prevention in robot planning

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2013 IEEE 18th International Conference on Emerging Technologies and Factory Automation, ETFA 2013

作者： Kloetzer, Marius Mahulea, Cristian Colom, Jose-Manuel Dept. of Automatic Control and Applied Informatics Technical University Gh. Asachi of Iasi Romania Dept. of Computer Science and Systems Engineering Univ. of Zaragoza Spain

ISBN: (纸本)9781479908622

This paper provides a strategy for supervising the motion of some mobile robots that evolve in the same environment. Some regions of the environment are assumed to have a limited capacity in terms of the number of robots that can simultaneously occupy them, and a set of possible trajectories is available for each robot. The solution comprises the construction of a specific Petri net model for the available trajectories, and the use of resource-allocation techniques based on restricted-capacity regions and on deadlock-free execution. © 2013 IEEE.

关键词： Petri nets

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Weight Selection in the LQ-Problem with Finite Final Time

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IFAC Proceedings Volumes 1996年第8期29卷 117-122页

作者： Cornelia Botan Călin Belta Dept.of Automatic Control and Industrial Informatics Faculty of Automatic Control and Computer Science “Gh.Asachi” Technical University of laşi România

The paper indicates an analytic computing relation for the solution to Riccati differential matrix equation and -based on that- it establishes the weight matrices influence on the solution of the equation and on the LQ-Problem’s criterion minimum value either. It indicates also an efficient way for the optimal controller implementation.

关键词： optimal control linear quadratic controller implementation weight matrix

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Optimization strategies for MPLS traffic engineering

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UPB Scientific Bulletin, Series C: Electrical Engineering 2009年第1期71卷 91-102页

作者： Rughinis, Razvan Deaconescu, Razvan Dept. of Automatic Control Computer Science University POLITEHNICA of Bucharest Bucharest Romania

The paper analyzes optimization strategies for Multiprotocol Label Switching (MPLS) Traffic Engineering in three different areas: Quality of Service awareness, network awareness and the design of routing algorithms. Recent developments in MPLS technology are discussed while identifying the main balancing possibilities within and between the three areas.

关键词： Quality of service

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Design procedure for inverse model command: control method for nonlinear processes

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UPB Scientific Bulletin, Series C: Electrical Engineering 2008年第3期70卷 87-100页

作者： Lupu, Ciprian Petrescu, Catalin Ticlea, Alexandru Dimon, Catalin Udrea, Andreea Irimia, Bogdan Dept. of Automatic Control and Computer Science University Politehnica of Bucharest Bucharest Romania

Structures with inverse model represent one of the successful solutions for the real-time control of the nonlinear processes. The use of these structures imposes solving some specific problems, like determination of static characteristic of the process, construction of inverse model or robust control law design. The paper proposes a structure and the correspondent original methodology of designing and physically implementation based on inverse model command. The applicability of the structure is proved using a real-time structure with an RST control algorithm. In the end, its software implementation and the obtained results are also shown.

关键词： Robust control

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Microgrid control simulation and testing

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical Engineering and computer science 2018年第2期80卷 57-68页

作者： Puianu, Mihaela Flangea, Ramona-Oana Arghira, Nicoleta Iliescu, Sergiu Stelian Faculty of Automatic Control and Computer Science University POLITEHNICA of Bucharest Romania Dept. of Automatic Control and Industrial Informatics University POLITEHNICA of Bucharest Romania

Microgrid control becomes more and more developed with the application of this concept on a larger scale. This paper defines the modern microgrid concept and evaluates the possible architectures and control hierarchy. A small scale microgrid architecture is proposed. The components of the system are a wind turbine, a photovoltaic panel and a household. The model was implemented in Matlab/Simulink and a decision table control was proposed. The proposed decisions and actions are defined for both on and off grid operation, in order to benefit most of the local resources. The results of this study are promising in terms of microgrid off grid operation for single dwellings, considering that the house is grid supplied for a period of only 4 hours of the day. © 2018 Politechnica University of Bucharest. All rights reserved.

关键词： Decision tables

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Optimal deployment of distributed passive measurement monitors

Optimal deployment of distributed passive measurement monito...

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2006 IEEE International Conference on Communications, ICC 2006

作者： Chengchen, Hu Bin, Liu Zhen, Liu Shifang, Gao Dapeng, Wu Dept. of Computer Science and Technology Tsinghua University Beijing China Dept. of Automatic Control Northwest Polytechnical University Xi'an Shaanxi China Dept. of Electrical and Computer Engineering University of Florida Gainesville FL United States

ISBN: (纸本)1424403553

Flow-level traffic measurement is important for network management. The widely used centralized per-flow measurement faces a great challenge due to the demanding requirement on both memory bandwidth and memory size within a single traffic monitor. This paper addresses the issue of deploying a Distributed Passive Measurement System (DPMS) in a large scale network;specifically, we study how to optimally place traffic monitors and sample stochastic traffic flows, so that the probability of a packet being sampled (a.k.a. measurement coverage) is maximized. We formulate this problem as a Stochastic Chance Constrained Optimization (SCCO) problem;and we propose a Hybrid Intelligent (HI) algorithm to solve this problem. The HI algorithm consists of two major components, namely, uncertain function approximation and genetic algorithm. Equipped with the HI algorithm, we are able to address the optimal tradeoff between measurement coverage and deployment cost for networks with random traffic, which has not been studied before. Our simulations and experiments demonstrate the effectiveness of our algorithm, i.e., a small deployment cost or a small number of monitors are sufficient to maintain a high level of measurement coverage. © 2006 IEEE.

关键词： Telecommunication traffic

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Reconfigurable parallel kinematic manipulator for flexible manufacturing

Reconfigurable parallel kinematic manipulator for flexible m...

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作者： Haage, Mathias Dressler, Isolde Robertsson, Anders Nilsson, Klas Brogardh, Torgny Johansson, Rolf Dept. Computer Science LTH Lund University Lund Sweden Dept. Automatic Control LTH Lund University Lund Sweden ABB Robotics SE-72168 Vasteras Sweden

ISBN: (纸本)9783902661432

Flexible manufacturing puts high demands on industrial automation in terms of affordable and competitive solutions and is of key importance for short-lot production typically found in small and medium sized enterprises, situations where today manual labour is extensively used despite e.g., environmental issues and harsh working conditions. Key factors in the successful introduction of new robot automation concepts are that they provide both the desired performance and quality (technical capability), but also that they enable fast deployment and extend available task repertoire. The Gantry-Tau manipulator is a new robot concept which in contrast to other high-performance parallel kinematic manipulators (PKM), has a large, open working range. Its high stiffness makes it ideal for a wide range of tasks such as grinding, deburring, and cutting. An additional aspect of such a PKM is the modularity, which in this work has been studied in terms of possibilities for assembly and mechanical reconfiguration at the end-user site, integration of such a kinematically different robot with a standard industrial controller, and new needs for methods/tools to support simple (re)configuration. A range of software tools and methods were found to be useful and necessary for efficient engineering and integration of the concept in typical SME manufacturing scenarios. For experimental evaluation, two full-scale prototype robots were designed and built, the kinematic software was developed and integrated into a couple of different robot control systems, robot CAD software was adapted to the configuration needs, and both simulations and physical experiments were carried out. Our findings make us believe that enhanced software tools should be integrated on a higher symbolic (or meta-) level to better support transformation of data and code generation, but also that the Gantry-Tau type of robot (with adequate software support) will bring a new dimension of flexibility into SME manufacturing.

关键词： Kinematics

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