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3rd International Conference on Broadband Communications, Informatics and Biomedical Applications, BroadCom 2008

作者： Kurschl, Werner Mitsch, Stefan Schoenboeck, Johannes Upper Austria University of Applied Sciences Research Center Hagenberg Department of Software Engineering Softwarepark 11 A-4232 Hagenberg Austria

ISBN: (纸本)9780769534534

Due to increasing anticipated average life and health expenditure ambient assisted living (AAL) systems attract the attention of researchers. To successfully build and deploy AAL systems knowledge from different fields of computer science is needed: pervasive computing to gain the raw data, machine learning and pattern recognition to interpret these data and HCI knowledge to allow implicit interaction with the system. In this paper we propose a reference architecture for building AAL systems. Based on this reference architecture we introduce a toolbox that simplifies the development of AAL systems. The toolbox consists of a meta-model for pipeline systems, a low-level context model, high-level context ontologies, customizable components and tool support. © 2008 IEEE.

关键词： Pattern recognition

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An analysis of a project reuse approach in an industrial setting

An analysis of a project reuse approach in an industrial set...

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Lecture Notes in Computer Science

作者： Gasparic, Marko Janes, Andrea Sillitti, Alberto Succi, Giancarlo Center for Applied Software Engineering Free University of Bolzano-Bozen Piazza Domenicani 3 Bolzano-BozenI-39100 Italy

ISBN: (纸本)9783319141299

We performed an industrial exploratory case study to analyze the software reuse process of a medium size company which is a technology leader in a niche market. Two unstructured interviews and code duplication analyses of four SVN dumps report about a development practice that resulted in more efficient maintenance, due to archiving complete versions of every shipped software, and more efficient development, due to duplication and modification of the most similar program, instead of implementing a new program from scratch. © Springer International Publishing Switzerland 2014.

关键词： Computer software reusability

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Automatic position determination of fixed infrastructure sensor network nodes based on topology sensing and maps

Automatic position determination of fixed infrastructure sen...

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2008 International Conference on Wireless Networks, ICWN 2008

作者： Kurschl, Werner Gottesheim, Wolfgang Mitsch, Stefan Prokop, Rene Schönböck, Johannes Upper Austria University of Applied Sciences Research Center Hagenberg Department of Software Engineering Softwarepark 11 A-4232 Hagenberg Austria

ISBN: (纸本)1601320914

The tracking of objects and humans has recently received a lot of attention as a tool to improve business processes, occupational and public safety. In industrial environments wireless sensor networks can facilitate deployment of tracking applications as they can establish a standalone communication infrastructure (a so called mesh network). Many such positioning and location tracking systems deploy a fixed infrastructure (so-called beacons) with known positions to determine the position of mobile nodes in the network. For large-scale deployments the installation effort of such systems may be a major cost-factor, as the exact position of each beacon needs to be manually determined and associated with map material. We therefore propose a position determination tool that automatically finds the positions of beacons based on the sensor network's topology, digital map material of the environment, and a small set of anchor nodes.

关键词： Topology

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Pair programming and software defects - An industrial case study

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作者： Phaphoom, Nattakarn Sillitti, Alberto Succi, Giancarlo Center for Applied Software Engineering Free University of Bozen-Bolzano Piazza Dominicani 3 Bozen-Bolzano I-39100 Italy

ISBN: (纸本)9783642206764

In the last decade there has been increasing interest in pair programming. However, despite work has been done, there is still a lack of substantial evidence of pair programming effects in industrial environments. To increase a body of evidence regarding the real benefits of pair programming, we investigate its relationship with software defects. The analysis is based on 14-months data collected from a large Italian manufacturing company. The team of 17 developers adopted a customized version of extreme programming and used pair programming on a daily basis. We explore and compare the defect rate of the code changed by doing pair and solo programming. The results show that defects appear to be lower for the code modified during pair programming. As a consequence, we formulate a hypothesis that pair programming is effective in reducing the introduction of new defects when existing code is modified. © 2011 Springer-Verlag Berlin Heidelberg.

关键词： Defects

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TGMin： A global-minimum structure search program based on a constrained basin-hopping algorithm

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Nano Research 2017年第10期10卷 3407-3420页

作者： Yafan Zhao Xin Chen Jun Li Institute of Applied Physics and Computational Mathematics Beijing 100088 China CAEP Software Center for High Performance Numerical Simulation Beijing 100088 China Department of Chemistry and Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education Tsinghua University Beijing 100084 China

In this article, we introduce Tsinghua Global Minimum （TGMin） as a new program for the global minimum searching of geometric structures of gas-phase or surface-supported atomic clusters, and the constrained basin-hopping （BH） algorithm implemented in this program. To improve the efficiency of the BH algorithm, several types of constraints are introduced to reduce the vast search space, including constraints on the random displacement step size, displacement of low-coordination atoms, and geometrical structure adjustment after displacement. The ultrafast shape-recognition （USR） algorithm and its variants are implemented to identify duplicate structures during the global minimum search. In addition to the Metropolis acceptance criterion, we also implemented a morphology-based constraint that confines the global minimum search to a specific type of morphology, such as planar or non-planar structures, which offers a strict divide-and-conquer strategy for the BH algorithm. These improvements are implemented in the TGMin program, which was developed over the past decade and has been used in a number of publications. We tested our TGMin program on global minimum structural searches for a number of metal and main-group clusters including C60, Au20 and B20 clusters. Over the past five years, the TGMin program has been used to determine the global minimum structures of a series of boron atomic clusters （such as [B26]^-, [B28]^-, [B30]^-, [B35]^-, [B36]^-, [B39]^-, [B40]^-, [MnB16]^-, [COB18]^-, [RhB18]^-, and [TaB20]^-）, metal-containing clusters Lin （n = 3-20）, Aug（CO）8^＋ and [Cr6O19]^2-. and the oxide-supported metal catalyst Au7/γ-Al2O3, as well as other isolated and surface-supported atomic clusters. In this article we present the major features of TGMin program and show that it is highly efficient at searching for global-minimum structures of atomic clusters in the gas phase and on various surface supports.

关键词： basin hopping ultrafast shape recognition global minimum search density functional theory cluster

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SyQL: An object oriented, fuzzy, temporal query language for repositories of software artifacts

SyQL: An object oriented, fuzzy, temporal query language for...

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23rd ACM SIGPLAN Conference on Object Oriented Programming Systems Languages and Applications,OOPSLA 2008

作者： Bianco, Mirco Sillitti, Alberto Succi, Alberto Center for Applied Software Engineering Free University of Bolzano-Bozen Via della Mostra 4 I-39100 Bolzano-Bozen Italy

Data mining on software products and process metrics is hard. The relations between them are different and may vary. We present a data manipulation language called System Query Language, which partially overcomes the ... 详细信息

关键词： Data warehouses

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JAFAR: Detailed design of a pattern-based J2EE Framework

JAFAR: Detailed design of a pattern-based J2EE Framework

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6th IASTED International Conference on software engineering and Applications, SEA 2002

作者： Guelfi, Nicolas Sterges, Paul Luxembourg University of Applied Sciences Software Engineering Competence Center 6 Rue Coudenhove-Kalergi L-1359 Luxembourg-Kirchberg Luxembourg

ISBN: (纸本)0889863237

Framework-based development is one of the major challenges in the field of rapid development of distributed applications. J2EE-based web applications represent an extremely interesting context for which development frameworks should be provided. Unfortunately, there are few integrated frameworks for such environments developed from a software engineering perspective. This paper presents the detailed design of JAFAR, our patternbased J2EE framework. It provides a way for framework developers to concretely reuse our approach or to compare their approaches to JAFAR. It also shows how such frameworks should be considered from a software engineering perspective, and it highlights the advantage of relating frameworks to a development methodology supported by a case tool.

关键词： Architecture Case tools Design Design patterns Frameworks J2EE

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Using and specializing JAFAR, a pattern-based J2EE framework: An auction CASE study

Using and specializing JAFAR, a pattern-based J2EE framework...

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6th IASTED International Conference on software engineering and Applications, SEA 2002

作者： Guelfi, Nicolas Ries, Benoît Luxembourg University of Applied Sciences Software Engineering Competence Center 6 Rue Coudenhove-Kalergi L-1359 Luxembourg-Kirchberg Luxembourg

ISBN: (纸本)0889863237

Sun's J2EE environment is becoming one of the major technologies for the development of web applications. The reuse of stable and integrated components is a wellknown mean to achieve effective software development. Frameworks have this objective but few frameworks are available for the J2EE platform, and moreover, they are rarely integrated in a global methodological approach supported by a tool. Furthermore, the available literature mainly provides a general conceptual presentation of frameworks. The objective of this paper is to present, from a pragmatic perspective, the use of the J2EE framework called JAFAR devoted to the development of web applications. As JAFAR has been developed from a software engineering point of view, we also show how its use can be supported by CASE tools that support design modeling and allows pattern-based development. For this purpose we used the Rational XDE environment.

关键词： Object oriented programming

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Rigourous engineering of software architectures: Integrating ADLs, UML and development methodologies

Rigourous engineering of software architectures: Integrating...

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6th IASTED International Conference on software engineering and Applications, SEA 2002

作者： Guelfi, Nicolas Perrouin, Gilles Luxembourg University of Applied Sciences Software Engineering Competence Center 6 Rue Coudenhove-Kalergi L-1359 Luxembourg-Kirchberg Luxembourg

ISBN: (纸本)0889863237

Architecture engineering is an area that is under construction for being transferred to software engineers. Many results exist from high-level formal and conceptual approaches to basic good practices taken from industrial experiences. Descriptions and methodologies should be at least considered for architecture engineering. Two interesting approaches to architecture description are available: Architecture Description Languages (ADL) or modeling languages (especially UML). In the first case, efforts have been made to provide rigorous integrated languages dedicated to architecture engineering but unfortunately these languages are incomplete and not ready for technology transfer. Concerning UML, many approaches use UML models for partial architecture descriptions. In both cases, a few efforts have been made on methodology. This paper presents the current state of the art covering architecture descriptions and development methodologies for architecture engineering. We present a first integrated approach, called FIDJI that tries to take advantage from ADLs, UML, and some development methodologies. FIDJI uses UML for its models, MDA for its layering and ADLs for precision. Concerning methodology, FIDJI follows the HP recommendations and the notion of refinement and contracts taken from formal development methodologies. Finally, we briefly illustrate the use of the FIDJI approach by means of a real web-based distributed application.

关键词： software architecture

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EVALUATION OF SINGULAR AND NEARLY SINGULAR INTEGRALS IN THE BEM WITH EXACT GEOMETRICAL REPRESENTATION＊

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Journal of Computational Mathematics 2013年第4期31卷 355-369页

作者： Yaoming Zhang Wenzhen Qu Yan Gu Institute of Applied Mathematics Shandong University of Technology Zibo 255039 China State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Dalian 116024 China Center for Numerical Simulation software in Engineering and Sciences Department of Engineering Mechanics Hohai University Nanjing 210098 China

The geometries of many problems of practical interest are created from circular or ellip- tic arcs. Arc boundary elements can represent these boundaries exactly, and consequently, errors caused by representing such geometries using polynomial shape functions can be removed. To fully utilize the geometry of circular boundary, the non-singular boundary integral equations （BIEs） and a general nonlinear transformation technique available for arc elements are introduced to remove or damp out the singular or nearly singular proper- ties of the integral kernels. Several benchmark 2D elastostatic problems demonstrate that the present algorithm can effectively handle singular and nearly singular integrals occur- ring in the boundary element method （BEM） for boundary layer effect and thin-walled structural problems. Owing to the employment of exact geometrical representation, only a small number of elements need to be divided along the boundary and high accuracy can be achieved without increasing other more computational efforts.

关键词： BEM Singular integrals Nearly singular integrals Boundary layer effect Thinwalled structures Exact geometrical representation.

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