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11th Workshop on Requirements engineering, WER 2008

作者： Romero, Miguel Vizcaino, Aurora Piattini, Mario Department of Computer Science And Information Technologies University of Bio-Bio Avenida Andres Bello s/n 3780000 Chillán Chile Alarcos Research Group Dep. of Information Technologies and Systems University of Castillo-La Mancha Spain

ISBN: (纸本)9788476531440

The requirements elicitation process is particularly difficult in Global Software Development (GSD) environments owing principally to cultural differences and communication problems derived from the geographical distance that separates stakeholders. For this reason it is necessary to train professionals in the skills needed to confront a requirements elicitation process in a GSD environment. In this paper we present the generic and specific competences derived from our review of literature that a software engineer must have if s/he Li to carry out requirements elicitation. We have used these skills to design a tool to support the teaching of requirements elicitation in GSD. This tool is a simulator which, by using virtual gents, will enable students and professionals to acquire a subset of the skills necessary for requirements elicitation in GSD.

关键词： Software design

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A solar energy harvesting circuit for low power applications

A solar energy harvesting circuit for low power applications

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IEEE International Conference on Sustainable Energy Technologies, ICSET

作者： D. Dondi A. Bertacchini L. Larcher P. Pavan D. Brunelli L. Benini Dep. of Information Engineering (DII) at University of Modena and Reggio Emilia Reggio Emilia Italy Dep. Engineering Sciences and Methodologies (DISMI) at University of Modena and Reggio Emilia Reggio Emilia Italy Dep. Engineering Sciences and Methodologies (DISMI) at University of Modena and Reggio Emilia Italy Dep. of Electronics Computer Sciences and Systems (DEIS) at University of Bologna Italy

In this paper we present a solar energy harvesting circuit for low-power applications describing circuit architecture and guidelines for an optimal design. We evaluate the performance of two implemented prototypes intended to power a wireless embedded system under different light intensities and different switching frequencies. Measurements show that higher switching frequencies allow reaching the maximum efficiency (~90%) at higher light intensities, whereas lower operating frequencies perform better under lower irradiance. Experimental results show that circuit optimization dep.nds on light conditions and the proposed solar energy harvester can autonomously supply the nodes of a wireless sensor network WSN.

关键词： Solar energy Circuits

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Adaptive Optimal Control for a One-Machine Infinite-Bus Power System

Adaptive Optimal Control for a One-Machine Infinite-Bus Powe...

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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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Statistical modeling of medical indexing processes for biomedical knowledge information discovery from text 8

Statistical modeling of medical indexing processes for biome...

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8th International Workshop on Data Mining in Bioinformatics, BIOKDD 2008 - Held in conjunction with 14th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, KDD 2008

作者： Bundschus, Markus Dejori, Mathaeus Yu, Shipeng Tresp, Volker Kriegel, Hans-Peter Institute for Computer Science University of Munich Oettingenstr. 67 Munich80538 Germany Integrated Data Systems Dep. Siemens Corporate Research 755 College Road East PrincetonNJ08540 United States CAD and Knowledge Solutions Siemens Medical Solutions 51 Valley Stream Parkway MalvernPA19355 United States Information and Communications IC4 Siemens CT Otto-Hahn-Ring 6 Munich81739 Germany

ISBN: (纸本)3642125182

The overwhelming amount of published literature in the biomedical domain and the growing number of collaborations across scientific disciplines results in an increasing topical complexity of research articles. This represents an immense challenge for efficient biomedical knowledge discovery from text. We present a new graphical model, the so-called Topic-Concept Model, which extends the basic Latent Dirichlet Allocation framework and reflects the generative process of indexing a PubMed abstract with terminological concepts from an ontology. The generative model captures the latent topic structure of documents by learning the statistical dep.ndencies between words, topics and MeSH (Medical Subject Headings) concepts. A number of important tasks for biomedical knowledge discovery can be solved with the here introduced model. We provide results for the extraction of the hidden topic-concept structure from a large medical text collection, the identification of the most likely topics given a specific MeSH concept, and the extraction of statistical relationships between MeSH concepts and words. Moreover, we apply the introduced generative model to a challenging multi-label classification task. A benchmark with several classification methods on two indep.ndent data sets proves our method to be competitive. © 2008 ACM

关键词： Ontology

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A Simulator for Education and Training in Global Requirements engineering: A Work in Progress

A Simulator for Education and Training in Global Requirement...

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International Conference on Advanced Learning Technologies (ICALT)

作者： Miguel Romero Aurora Vizcaíno Mario Piattini Department of Computer Science and Information Technologies University of Bio-Bio Chillan Chile Alarcos Research Group-Institute of Information Technologies & Systems Department of Information Technologies & Systems Escuela Superior de Informatica University of Castilla La Mancha Spain Dep. of Information Technologies & Systems-Escuela Superior de Informática Alarcos Research Group-Institute of Information Technologies & Systems

ISBN: (纸本)9780769531670

The requirements elicitation process is that which is the most critical in software development. For this reason it is necessary to train professionals in the skills needed to confront this process. Traditionally this has not been an easy task and with the arrival of new paradigms such as global software development (GSD) it has become more difficult. It thus becomes necessary to rely on new methods and tools which should support this process in a GSD environment. In this work we outline the characteristics of a simulator for the education and training of global requirements engineering and indicate the competences that this simulator would allow us to develop.

关键词： Programming Information technology Medical simulation Telephony Educational technology Computational modeling computer simulation computer science education computer science Software engineering

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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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Motivation and Competitive Learning in a Social Robot

Motivation and Competitive Learning in a Social Robot

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2008 IEEE/RSJ International Conference on Intelligent Robots and systems, Pages 3661-4172

作者： Salvador Dominguez Eduardo Zalama Jaime G. Garcia-Bermejo Jaime Pulido Robotics Computer Vision and Real Time Division CARTIF Foundation Boecillo Valladolid Spain DepDepartment of Systems Engineering and Automatic Control Industrial Engineering School University of Valladolid Spain University of Valladolid (Spain) Dep. of Systems Engineering and Automatic Control Industrial Engineering School Comput. Vision & Real Time Div. CARTIF Found. Valladolid

ISBN: (纸本)9781424420575

This paper describes the motivation and learning subsystems of Arisco which is a mechatronic head with interactive capacity which includes high expressivity through gesturing, voice recognition, text to speech generation, visual tracking, and internet information retrieval. The general architecture is first described in the paper. Then, the learning capacity of Arisco is addressed. It learns and performs associations between different stimulus responses through several dynamic neural networks, guided by motivational drives. A number of experiments are discussed, covering stimulus competition, habituation, classical and operant conditioning.

关键词： Social robot learning interaction computer vision motivation

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Emerging interactions as a resource for designing learning environments 07

Emerging interactions as a resource for designing learning e...

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

作者： Napoletano, Linda Fanò, Filippo Communication Science Dep. University of Siena Via Roma 56 53100 Siena Italy Computer Science and Information Systems Dep. Interaction Design Centre University of Limerick Ireland

ISBN: (纸本)9781595937476

This paper shows the relevance of a design approach based on emerging behaviours and context potentialities in educational environments. It reports on a music educational course evaluated over a period of five months by a team of interaction designers. The analysis of the activities allowed us to collect two types of data: the problematics and the emergent qualities of the context. The results of the analysis and the definition of a theoretical framework converged toward the description of some challenges for the design, which will be explored in the future collaboration. Copyright 2007 ACM.

关键词： E-learning

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