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International Conference on Computational Intelligence for Modelling, Control and Automation, and International Conference on Intelligent Agents, Web Technologies and Internet Commerce

作者： Amir Mohammad Sayidi M. Ali Nekoui N. Seifi Boghrabidi Electrical and Computer Engineering Dep. Science Research branch of Azad University Tehran Iran Electrical Engineering Dept. K.N.T. University of Technology Tehran Iran Electr. & Comput. Eng. Dep. Azad Univ. Tehran Iran

Network optimization especially in power industry is one of the main goals of system engineering. It not only reduces the cost of the system but also improves its stability. Among various methods of optimal control of power networks, like Linear Optimal Control (LOC), a model-based adaptive optimal method has been presented here which can also be used in multi machines systems with multimode high and low-frequency oscillations; although this paper only addresses linear and reduced machine-order equations which are derived from an equivalent system with an infinite-bus and a line. In this paper a model for the machine and the network is first presented and then by definitions of reference model and errors, these errors will be tend to zero in an optimal way, so that the system actually tracks the reference model. This method will be seen to be a general one and is applicable both in high and low frequencies.

关键词： Programmable control Adaptive control Optimal control Power system control Power systems Power system stability Power system modeling Power industry Power engineering and energy Systems engineering and theory

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Evaluating Aspect- and Object-Oriented Concepts to Model Distributed Embedded Real-Time Systems Using RT-UML

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IFAC Proceedings Volumes 2008年第2期41卷 6885-6890页

作者： Marco A. Wehrmeister Edison P. Freitas Dalimir Orfanus Carlos E. Pereira Franz Rammig Instituto de Informática Heinz Nixdorf Institute University of Paderborn Paderborn Germany School of Information Science Computer and Electrical Engineering Halmstad University Halmstad Sweden International Graduate School Dep. Engenharia Elétrica Federal University of Rio Grande do Sul Porto Alegre Brazil

The growing design complexity of today's embedded real-time systems requires new techniques aiming the raising of the abstraction level since earlier stages of design in order to deal with such complexity in a suitable way. This paper reports a case study, which provides an assessment of two well-know high-level paradigms, namely Aspect- (AO) and Object-Oriented (OO) Paradigms. Concepts of both paradigms were applied at modeling phase of a Distributed Embedded Real-Time System (DERTS). The handling of DERTS’ functional and non-functional requirements (at modeling level) using AO and OO concepts is discussed. Both paradigms are compared using of a set of software engineering metrics, which were adapted to be applied at modeling level. The presented results show the suitability of each paradigm for DERTS specification in terms of reusability quality of model elements.

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A composite-power-law noise generator

A composite-power-law noise generator

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2008 IEEE Instrumentation and Measurement Technology Conference (I2MTC 2008), vol.2

作者： Massimo D'Apuzzo Mauro D'Arco Rosario Schiano Lo Moriello Dep.of Electrical Engineering University of Naples ‘Federico II’ via Claudio 21 Napoli ITALY Dep. of Computer Science University of Naples ‘Federico II’ via Claudio 21 Napoli ITALY

Noise signals are often encountered in several science and engineering fields. They can be originated by a lot of different mechanisms, some of which are still not sufficiently understood. Since reliability and performance of many systems dep.nd on their noise sensitivity and noise rejection capability, suitable noise sources are required to lead appropriate tests to investigate the behavior of the same systems in the presence of noise. At present, only white noise sources are available on the market. Technicians that need to generate colored noise could use arbitrary waveform generators as noise sources;but, they will barely find application notes that support them in this challenging task. This work presents tutorial notes related to the simulation of colored noise, in particular of composite-power-law noise, and proposes an analog generator that exploits an arbitrary waveform generator as noise source.

关键词： colored noise power-law noise composite-power-law noise filter design filter stability

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Towards a framework for analysis of biophotonic images of mouse models of cancer

Towards a framework for analysis of biophotonic images of mo...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Vidya Kamath Dmitry Goldgof Raul Argilagos Lori Hazlehurst Steven Eschrich Biomedical Engineering program University of South Florida USA Department of Computer Science University of South Florida USA Department of Interdisciplinary Oncology Moffitt Cancer Center and College of Medicine University of South Florida USA Dep. of Interdisciplinary Oncology H. Lee Moffitt Cancer Center and College of Medicine University of South Florida USA

Biophotonic imaging can be used to characterize tumor growth in animal models. Estimation of the numbers and location of target cells is dep.ndent on accurate segmentation of a target region from the background luminescence of the animal body. Existing software systems extract general regions of interest in complex images but can fail to detect details or faint regions of interest in the presence of higher luminescent activity. Limited work has been published in the analysis of these images. We explore the use of popular medical image segmentation techniques in segmentation of bioluminescence images. The ability of each algorithm in detecting regions of interest is tested using established performance measures. Based on the characteristics of bioluminescence images of animal tumor models, and the performance of the algorithms, we formulate a framework for segmentation techniques best suited for this application.

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Discrete methods for association search and status prediction in genotype case-control studies

Discrete methods for association search and status predictio...

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7th IEEE International Conference on Bioinformatics and Bioengineering, BIBE

作者： Brinza, Dumitru Zelikovsky, Alexander Dep. Computer Science and Engineering University of California at San Diego San Diego CA 92093 United States Department of Computer Science Georgia State University Atlanta GA 30303 United States

ISBN: (纸本)1424415098

Recent improvements in high-throughput genotyping technology make possible genome-wide association studies and status prediction (classification) for common complex diseases. This paper addresses three challenges commonly facing such studies: (i) searching an enormous amount of possible gene interactions, (ii) validating reproducibility of associations and (iii) reliably predicting disease status. These challenges have been traditionally addressed in statistics while here we apply computational approaches - optimization and cross-validation. A complex risk factor is modeled as a subset of SNP's with specified alleles and the optimization formulation asks for the one with the maximum odds ratio. When searching for disease associated risk factor, we show that greedy heuristics are much faster and lead to significantly better solutions than exhaustive heuristics in a reasonable amount of time. We propose a novel randomized complimentary greedy search method that is advantageous to the previously best search method. To measure and compare ability of search methods to find reproducible risk factors, we propose to apply a cross-validation scheme usually used for prediction validation. The proposed heuristic association search methods promise better reproducibility than exhaustive searches. We then show that k-fold cross-validation is more reliable than leave-one-out cross-validation for disease status prediction methods since it captures overtraining effect. We have applied known search methods with proposed enhancements as well as status prediction methods (based on these search methods) to real case-control studies for several diseases (Chron's disease, autoimmune disorder, tick-born encephalitis, lung cancer, and rheumatoid arthritis). 2- and 3-fold cross-validations show that the new methods find strongly associated risk factors and reliably predict disease status for considered case-control studies. ©2007 IEEE.

关键词： Genes

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An integrative approach for teaching/tutoring process models using meta-models

An integrative approach for teaching/tutoring process models...

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IADIS International Conference on Cognition and Exploratory Learning in Digital Age, CELDA 2007

作者： Martens, Alke Harrer, Andreas University of Rostock Dep. of Computer Science and Electrical Engineering Albert-Einstein-Str. 21 D-18059 Rostock Germany University of Eichstätt Dep. of Mathematics and Geography Ostenstr. 14 D-85072 Eichstätt Germany

ISBN: (纸本)9781627483322

This paper discusses different formal models to represent educational processes and their use by computer systems. Currently most of these models are tied to specific application scenarios and tools, which reduces the transferability and re-usability of these models in different contexts. To achieve the interoperable use and transfer between different educational systems we propose the meta-modeling approach GOLEM (Graphically Organized Learning and Educational Metamodel) using an intermediary visual language the different models are mapped to. We describe the different mappings and discuss potential and limitations of the transformations.

关键词： Visual languages

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Throwing motion of manipulator with passive revolute joint

Throwing motion of manipulator with passive revolute joint

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作者： Sato, Asaji Sato, Osamu Takahashi, Nobuya Kono, Michio Dept. of Mechanical Engineering Miyakonojo National College of Technology Miyakonojo 885-8567 Japan Dep. of Computer Science and Systems Engineering Faculty of Engineering University of Miyazaki Miyazaki 889-2192 Japan

ISBN: (纸本)9784990288013

In this paper, equations of motion of a manipulator, whose mechanism has a passive revolute joint, are derived in consideration of characteristics of driving source. Considering the final condition about displacement and velocity, trajectories of velocity for saving energy are calculated by iterative dynamic programming. And, the dynamic characteristics of manipulator controlled based on the trajectory for saving energy are analyzed theoretically. ©ISAROB 2007.

关键词： Dynamic programming

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StorySurfer: A playful book browsing installation for children's libraries 07

StorySurfer: A playful book browsing installation for childr...

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6th international Conference on Interaction Design And Children, IDC 2007

作者： Eriksson, Eva Lykke-Olesen, Andreas IDC - Interaction Design Collegium Dep. of Computer Science and Engineering Chalmers University of Technology SE-41296 Gothenburg Sweden Department of Design Aarhus School of Architecture DK-8000 Aarhus C Denmark

ISBN: (纸本)9781595937476

In this paper, we present a large-scale interactive book browsing installation for children's libraries called StorySurfer. The StorySurfer prototype is developed within the Interactive Children's Library project, which includes interests from within design, research, industry, and libraries. The objective of the project is to give room for and encourage the physical activities of children, while pursuing to connect these with the basic digital and analogue services of the library e.g. borrowing and handing in books, searching for information, and providing access to a rich variety of media. Copyright 2007 ACM.

关键词： Digital libraries

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Implementation and evaluation of EduBingo for arithmetic drill

Implementation and evaluation of EduBingo for arithmetic dri...

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DIGITEL 2007: 1st IEEE International Workshop on Digital Game and Intelligent Toy Enhanced Learning

作者： Chang, Sung-Bin Deng, Yi-Chan Cheng, Hercy N. H. Liao, Hui-Chun Yu, Fu-N Chan, Tak-Wai Dep. of Computer Science and Information Engineering National Central University Taiwan Institute of Education National Cheng Kung University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan

ISBN: (纸本)0769528015

Bingo is a universally known, popular, and easy-toplay game. Following Bingo rules with some modifications, we have designed and implemented a game, called EduBingo, for practicing mathematics fractions. The game was implemented and experimented in a 'one-to-one' technology enhanced classroom, where every student learns with a wireless enabled computing device. The experiment investigated students' preferences, system usability, as well as the effects on their affective states of a grade 4 class with 22 students. The result of the questionnaire indicates that the usability of EduBingo is acceptable and there was increase of various affective levels of the students. The data collected by the system, after analysis, implies that, for most students, accuracy and efficiency of solving fraction questions increased. The preliminary result also suggests some directions for further research. © 2007 IEEE.

关键词： Digital arithmetic

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A Generic Multi-Robot Coordination Strategic Layer 1

A Generic Multi-Robot Coordination Strategic Layer

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1st International Conference on Robot Communication and Coordination, RoboComm 2007

作者： Certo, João Lau, Nuno Reis, Luis P. IEETA Institute of Electronics and Telematics Engineering of Aveiro Portugal FEUP Faculty of Engineering The University of Porto Portugal DETI –Informatics Electronics and Telecommunications Dep. University of Aveiro Portugal LIACC – Artificial Intelligence and Computer Science Lab. Univ. Porto Portugal

ISBN: (纸本)9789639799080

Managing a team of heterogeneous robots in a dynamic environment poses a challenging job. In this paper a model for a multi-purpose, real-time, adaptable, strategical coordination layer is presented. Based on previous work developed for the RoboCup Soccer simulation, small-size, middle-size and legged leagues, a generic coordination model was built. As both centralized and distributed environment are handled by the layer, communication was an important factor to consider only introducing a minor overhead. A multi-level hierarchical approach was followed with hybrid methods used to switch between concepts. The model was tested with two strategy instances, RoboCup Rescue Simulation and RoboCup Soccer. Strategies are designed with the help of a graphical tool. Results achieved by the team in RoboCup Rescue and Soccer Simulation competitions demonstrate the usefulness of this approach. Copyright © 2011-2012 ICST

关键词： Sports

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