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International Symposium on Industrial Embedded systems

作者： C. Bradatsch T. Ungerer R. Zalman A. Lajtkep Systems and Networking Department of Computer Science University of Augsburg Augsburg Germany Automotive Electronics Microcontroller Development-System & Software Engineering Infineon Technologies Neubiberg Germany Electrics/Electronics and Driver Environment Platform Technologies Software and AUTOSAR BMW Group Munich Germany

Runtime testing is a common way to detect faults during normal system operation. To achieve a specific diagnostic coverage runtime testing is also used in safety critical, automotive embedded systems. In this paper we propose a test architecture to consolidate the hardware resource consumption and timing needs of runtime tests and of application and system tasks in a hard real-time embedded system as applied to the automotive domain. Special emphasis is put to timing requirements of embedded systems with respect to hard real-time and concurrent hardware resource accesses of runtime tests and tasks running on the target system.

关键词： Circuit faults Testing Runtime Hardware Safety Automotive engineering Embedded systems

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Implementing strategic planning capabilities within the Mars Relay Operations Service

Implementing strategic planning capabilities within the Mars...

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AIAA Infotech at Aerospace Conference and Exhibit 2011

作者： Hy, Franklin Gladden, Roy Allard, Dan Wallick, Michael Ground Data System Engineering Jet Propulsion Laboratory California Institute of Technology 264-214 Pasadena CA 91109 United States Planning and Execution System Engineering Jet Propulsion Laboratory California Institute of Technology 264-235 Pasadena CA 91109 United States Distributed Systems Technologies Jet Propulsion Laboratory California Institute of Technology 301-480 Pasadena CA 91109 United States Operations Planning Software Group Jet Propulsion Laboratory California Institute of Technology 301-250D Pasadena CA 91109 United States

ISBN: (纸本)9781600869440

Since the Mars Exploration Rovers (MER), Spirit and Opportunity, began their travels across the Martian surface in January of 2004, orbiting spacecraft such as the Mars 2001 Odyssey orbiter have relayed the majority of their collected scientific and operational data to and from Earth. From the beginning of those missions, it was evident that using orbiters to relay data to and from the surface of Mars was a vastly more efficient communications strategy in terms of power consumption and bandwidth compared to direct-to-Earth means. However, the coordination between the various spacecraft, which are largely managed independently and on differing commanding timelines, has always proven to be a challenge. Until recently, the ground operators of all these spacecraft have coordinated the movement of data through this network using a collection of ad hoc human interfaces and various, independent software tools. The Mars Relay Operations Service (MaROS) has been developed to manage the evolving needs of the Mars relay network, and specifically to standardize and integrate the relay planning and coordination data into a centralized infrastructure. This paper explores the journey of developing the MaROS system, from inception to delivery and acceptance by the Mars mission users. © 2011 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： Energy efficiency

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LIR-OSGi: Extends OSGi to support distributed and heterogeneous ubiquitous computing system

LIR-OSGi: Extends OSGi to support distributed and heterogene...

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International Conference on Pervasive Computing and Applications (ICPCA)

作者： Jinzhao Liu Xiaojuan Lu Dan Wang Xin Liu Yongqiang Lu Yu Chen Department of Computer Science and Technology Beijing University of Technology Beijing China General Hospital of PLA Second Artillery USA Research Institute of Information Technology Key Laboratory of Pervasive Computing Ministry of Education Tsinghua University Beijing China System Software and Software Engineering Group Laboratory of Pervasive Computing Department of Computer Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781457702099

As an emerging portable service platform, OSGi is now taking a more and more important role in Ubiquitous Computing environment. As a module management framework, OSGi provides the functions of dynamic loading and unloading software modules at runtime. But its use is limited because it is centralized and single programming language supported. In this paper we present LIR-OSGi, an extended framework of OSGi, which is designed to add the distribution and programming language independence to OSGi. Meanwhile it is easy to use for developers because of the transparence of service invocation and automation of distribution. Not like OSGi which can be applied only on the Java platform, LIR-OSGi makes programs which may be written in different programming languages be able to call each other transparently so that it can be applied in many different platforms such as DotNet Framework and so on. This brings much convenience to the program development in a distributed and heterogeneous environment.

关键词： Servers Sockets Indexes Program processors Logic gates Dynamic compiler

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Dependability evaluation of complex systems with TimeNET

Dependability evaluation of complex systems with TimeNET

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1st Workshop on Dynamic Aspects in Dependability Models for Fault Tolerant systems, DYADEM-FTS 2010, Co-located to the European Dependable Computing Conference, EDCC 2010

作者： Zimmermann, Armin Technische Universität Ilmenau Faculty of Computer Science and Automation System and Software Engineering Group PF 100 565 D-98684 Ilmenau Germany

This paper presents recent changes to TimeNET, a software tool for the modeling and performability evaluation using stochastic Petri nets. A rare-event simulation module has been implemented for colored stochastic Pet... 详细信息

ISBN: (纸本)9781605589169

关键词： Computer software selection and evaluation

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Teaching software engineering from a collaborative perspective: Some Latin-American experiences

Teaching software engineering from a collaborative perspecti...

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21st International Workshop on Database and Expert systems Applications, DEXA 2010

作者： Giraldo, Fáber D. Collazos, César A. Ochoa, Sergio F. Zapata, Sergio De Clunie, Gisela Torres System and Computer Engineering Department University of Quindío Armenia IDIS Research Group University of Cauca Popayan Colombia Computer Science Department University of Chile Santiago Chile Informatics Institute National University of San Juan San Juan Argentina Software Engineering Department Technological University of Panama Panama City Panama

ISBN: (纸本)9780769541747

Teaching software engineering has been recognized as an important challenge for computer science undergraduate programs. Instruction in such area requires not only to deliver theoretical knowledge, but also to perform practical experiences that allow students to assimilate and apply such knowledge. This paper presents some results of two Computer-Supported Collaborative Learning (CSCL) experiences that involved students of software engineering courses from four Latin American Universities. The obtained results were satisfactory and indicate the reported collaborative activity could be appropriate to address teaching software engineering. © 2010 IEEE.

关键词： E-learning

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Model-Driven Runtime Resource Predictions for Advanced Mechatronic systems with Dynamic Data Structures

Model-Driven Runtime Resource Predictions for Advanced Mecha...

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International Symposium on Object-Oriented Real-Time Distributed Computing

作者： Stefan Henkler Simon Oberthür Holger Giese Andreas Seibel Software Engineering Group University of Paderborn Paderborn Germany Design of Distrib. Embedded Syst. Res. Group Univ. of Paderborn Paderborn Germany System Analysis and Modeling Group University of Potsdam Potsdam Germany

The next generation of advanced mechatronic systems is expected to enhance their functionality and improve their performance by context-dependent behavior. Therefore, these systems require to represent information about the complex environment and changing sets of collaboration partners internally. This requirement is in contrast to the usually assumed static structures for embedded systems. In this paper, we present a model-driven approach which overcomes this situation by supporting dynamic data structures while still guaranteeing that valid worst-case execution times can be derived. It supports a flexible resource management which avoids to operate with the prohibitive coarse worst-case boundaries but instead supports to run applications in different profiles which guarantee different resource requirements and put unused resources in a profile at other applications' disposal. By supporting the proper estimation of worst case execution time (WCET) and worst case number of iteration (WCNI) at runtime, we can further support to create new profiles, add or remove them at runtime in order to minimize the over-approximation of the resource consumption resulting from the dynamic data structures required for the outlined class of advanced systems.

关键词： Predictive models Runtime Mechatronics Data structures Embedded system Resource management Object oriented modeling Real time systems Object oriented programming Distributed computing

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Virtual integration of model-based functions under autosar

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AutoTechnology 2010年第1期10卷 46-50页

作者： Michailidis, Alexander Ringler, Thomas Hedenetz, Bernd Kowalewski, Stefan Department of E/E Architectures and Standards Group Research and Advanced Engineering Division Daimler AG Böblingen Germany Team E/E System Design and Applications Group Research and Advanced Engineering Division Daimler AG Böblingen Germany Software for Embedded Systems RWTH Aachen University Germany

The functionality of comfort and interior systems such as interior light, seat heating, central locking is typically distributed on several Electronic Control Units (ECU). These systems very often consist of a central main function and many other smaller so-called client functions. The system or rather the ECU integration and thus the examination of the interplay of the functions with one another or with the hardware specific software is carried out in the right branch of the V-model according to the availability of the real ECUs. The construction of such models was up to now not practical due to the inconsistent ECU software architectures at the different suppliers. With the extensive adoption of the standardized Autosar software architecture and a consistent function-oriented Autosar SWC description, the design of virtual integration models in the earlier stages of development is for the first time possible with a reasonable effort.

关键词： software architecture

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Teaching software engineering from a Collaborative Perspective: Some Latin-American Experiences

Teaching Software Engineering from a Collaborative Perspecti...

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International Workshop on Database and Expert systems Applications

作者： Faber D. Giraldo Cesar A. Collazos Sergio F. Ochoa Sergio Zapata Gisela Torres de Clunie System and Computer Engineering Department University of Quindio Armenia Colombia IDIS Research Group University of Cauca Popayan Colombia Computer Science Department University of Chile Santiago Chile Informatics Institute National University of San Juan San Juan Argentina Software Engineering Department Technical University of Panama Panama

关键词： Collaboration software engineering software Education Collaborative work Programming Computers

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Developing Student Model Using Kohonen Network in Adaptive Hypermedia Learning system

Developing Student Model Using Kohonen Network in Adaptive H...

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International Conference on Intelligent systems Design and Applications (ISDA)

作者： Bariah Yusob Siti Mariyam Hj Shamsuddin Nor Bahiah Ahmad Faculty of Computer System & Software Engineering Universiti Malaysia Pahang Kuantan Pahang Malaysia Soft Computing Research Group Universiti Teknologi Malaysia Johor Malaysia

This paper presents a study on method to develop student model by identifying the students' characteristics in an adaptive hypermedia learning system. The study involves the use of student profiling techniques to identify the features that may be useful to help the researchers have a better understanding of the student in an adaptive learning environment. We propose a supervised Kohonen network with hexagonal lattice structure to classify the student into 3 categories: beginner, intermediate and advance to represent their knowledge level while using the learning system. An experiment is conducted to see the proposed Kohonen network's performances compared to the other types of Kohonen networks in term of learning algorithm and map structure. 10-fold cross validation method is used to validate the network performances. Results from the experiment shows that the proposed Kohonen network produces an average percentage of accuracy, 81.3889% in classifying the simulated data and 51.6129% when applied to the real student data.

关键词： Adaptive systems Learning systems Computer networks Educational technology Turing machines Lattices Intelligent systems Intelligent networks Application software software engineering

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Thermal/acoustic trade-off design for consumer electronics in a distributed design environment

Thermal/acoustic trade-off design for consumer electronics i...

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19th Annual International Symposium of the International Council on systems engineering, INCOSE 2009

作者： Seki, Kenichi Nishimura, Hidekazu Ishii, Kosuke Balmelli, Laurent Graduate School of System Design and Management Keio University 4-1-1 Hiyoshi Kouhoku-ku Yokohama Japan Department of Mechanical Engineering Stanford University Stanford CA 94305-4022 United States Product Lifecycle Management Solutions IBM Software Group United States Product Lifecycle Management Solutions Management Keio University Japan

ISBN: (纸本)9781615674398

Today's market demand for smaller, more powerful consumer electronics poses a major challenge to the rapid design of products. In addition, the ability to perform strategic coordination amongst different stakeholders within the enterprise increasingly becomes an important criterion to enable global engineering. We begin the paper with an introduction to a typical design process involving distributed design teams In particular the process allows the thermal-acoustic design of cavities, i.e. air space inside the enclosure, in terms of flow rate and acoustic radiation resistance. Then we proceed with the investigation of an approach leveraging recent modelling technology to support such a process efficiently. The process makes use of the system modelling language (SysML.) as product description support and the Design Structure Matrix as an analytical design tool. We use the model and the DSM as a means to drive numerical simulation and perform trade-off studies. Simulation results show that performing trade-off study in the early system design phase leads to a potentially optimal module layout for the problem studied. © 2009 SEKI, K Nishimura, H Balmelli, L.

关键词： Modeling languages

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