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CNNA 2016;15th International Workshop on Cellular Nanoscale Networks and their Applications

作者： Franz Richter-Gottfried Dietmar Fey Computer Science 3 (Computer Architecture) Friedrich-Alexander-Universitt Erlangen-Nurnberg (FAU)

Cellular Neural Networks (CNNs) are an inherently parallel computational model for multiple applications, and they are especially appropriate for image processing tasks. Besides of implementing them with analogue electronic circuits, they can be simulated on digital processor architectures like CPUs and GPUs, with the drawback of limited parallelism. FPGAs offer a fine-grained parallel execution with low power consumption and are thus attractive for embedded systems like smart cameras, for which it is not possible to use a full-featured CPU or GPU with tens or hundrets of watts. The drawback of implementing CNNs with FPGAs, to profit from the high performance-to-power ratio, is the time-consuming design process with conventional hardware descriptions languages. High-level-synthesis, e.g., from OpenCL, eases the process of generating CNNs in FPGAs. By using the OpenCL programming model, the programmer can explicitly express the parallel nature of CNNs in a platform-independent way. To investigate its applicability to CNNs, we compare the execution of an unmodified OpenCL kernel on a recent CPU with an FPGA design generated with Altera's SDK for OpenCL. The results show, that though the CPU is faster, the FPGA solution performs better in terms of energy efficiency and fits for smart camera systems.

关键词： Cellular neural networks central processing units Field programmable gate arrays Smart cameras Energy efficiency image processing task Processor architectures low power consumption Embedded systems Computational modeling design process

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Internet Based Support for Architectural Planning Processes

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International Journal of Architectural Computing 2003年第3期1卷 361-373页

作者： Dirk Donath Katharina Richter Stefan Hansen Bauhaus-Universität Weimar InfAR Chair for Computer Science in Architecture Belvederer Allee 1 99421 Weimar Germany

As building projects become increasingly more complex, the number of project participants grows as does their spatial distribution. An effective decentralised work process and co-operation is of increasing importance. The global computer network, the internet, has great potential and recent times have seen the development of a variety of techniques in this field. The project described here is based upon this approach and also takes it a step further. A specific analysis of the topic and the subsequent identification of potential approaches formed the basis for an architectural application that brings the architect in contact with other project participants using the internet as a powerful yet simple and easy to use medium.

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Mastering the future: Agile model-based system design for BMW’s electrified next generation platform

Mastering the future: Agile model-based system design for BM...

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18th International Stuttgart Symposium on Automotive and Engine Technology, 2018

作者： Kriebel, Stefan Richenhagen, Johannes Schulze, Christoph Moyses, Vincent Orth, Philipp Pischinger, Stefan Greifenberg, Timo Rumpe, Bernhard BMW AG Germany Chair Computer Science 3 RWTH Aachen University Germany FEV Europe GmbH Germany FEV Group GmbH Germany

ISBN: (纸本)9783658211936

Future mobility systems are becoming more complex. Existing processes for hardware component oriented development reach a limit for highly integrated systems. High quality cannot be efficiently ensured any longer at shorter development cycles and reduced budgets. This article shows an approach to master system design and system verification with two approaches taken over from software industries: digital and agile transformation. Digital transformation of systems engineering based on model based specification with SysML helps to master complexity and agile transformation based on cross-functional teams with domain engineers and computer scientists contributes to sustainable consistency and a test first approach. As a consequence, testing efforts are frontloaded and quality increases due to early stakeholder involvement. Furthermore, this approach supports the know-how exchange between the specialists of different domains at expert level. This enables an efficient high performance large scale development under series project conditions. © Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature 2018.

关键词： Budget control

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Dynamic re-encoding during MDD minimization

Dynamic re-encoding during MDD minimization

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International Symposium on Multiple-Valued Logic

作者： F. Schmiedle W. Gunther R. Drechsler Institute of Computer Science Chair of Computer Architecture Albert Ludwig University Freiburg im Breisgau Germany Institute of Computer ScienceChair of Computer Architecture Albert Ludwig University Freiburg im Breisgau Germany

Multi-valued decision diagrams (MDDs) are a generalization of binary decision diagrams (BDDs). They often allow efficient representation of functions with multi-valued input variables similar to BDDs in the binary case. Therefore they are suitable for several applications in synthesis and verification of integrated circuits. MDD sizes counted in number of nodes vary from linear to exponential dependent on the variable ordering used. In all these applications, minimization of MDDs is crucial. In many cases, multi-valued variables are composed by a certain number of binary variables, and so the multi-valued inputs arise by grouping binary variables. The selection of these groups, that is, the decision which variables to merge, has enormous impact on MDD sizes. Techniques for finding variable groupings before starting MDD minimization have been proposed recently. In this paper we present a new method that uses re-encoding, i.e. dynamic variable grouping. We don't choose one fixed variable grouping before minimizing MDDs, but allow to change the binary variables to be considered together during the minimization process. This is possible since MDDs are simulated on top of BDDs. By this, the underlying binary variables remain accessible throughout the minimization process. This technique is described in detail and we also show experimental results that demonstrate the efficiency of our approach.

关键词： Data structures Boolean functions Minimization Input variables Integrated circuit synthesis computer science computer architecture Application specific integrated circuits Encoding Logic design

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QoS-Aware Service Composition: A Survey

QoS-Aware Service Composition: A Survey

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European Conference on Web Services (ECOWS)

作者： Anja Strunk Department of Computer Science Institute of Systems Architecture Chair of Computer Networks Technische Universität Dresden Dresden Germany

Service compositions build new services by orchestrating a set of existing services. In the Internet of Services there may be many functional similar services, but with different Quality of Service (QoS). Thus a significant research problem in service compositions is how to select the composition's composite services that the overall QoS of the composition is being maximized. This paper summarizes, classifies and evaluates major research efforts in this area and gives an overview about further open research questions.

关键词： Quality of service Time factors Optimization Availability Classification algorithms Concurrent computing

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Situation Recognition for Service Management Systems Using OWL 2 Reasoners

Situation Recognition for Service Management Systems Using O...

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IEEE Workshop on Context Modeling and Reasoning

作者： Waltenegus Dargie Eldora Julian Mendez Christoph Mobius Kateryna Rybina Veronika Thost Anni-Yasmin Turhan Chair of Computer Networks Institute of Systems Architecture Technische Universitat Dresden Chair for Automata Theory Institute for Theoretical Computer Science Technische Universitat Dresden

ISBN: (纸本)9781467350754

For service management systems the early recognition of situations that necessitate a rebinding or a migration of services is an important task. To describe these situations on differing levels of detail and to allow their recognition even if only incomplete information is available, we employ the ontology language OWL 2 and the reasoning services defined for it. In this paper we provide a case study on the performance of state of the art OWL 2 reasoning systems for answering class queries and conjunctive queries modeling the relevant situations for service rebinding or migration in the differing OWL 2 profiles.

关键词： OWL Servers Ontologies Cognition Runtime Hardware Power demand

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Automated Federation of Distributed Resources into User-Controlled Cloud Environments

Automated Federation of Distributed Resources into User-Cont...

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IEEE International Conference on Utility and Cloud Computing (UCC)

作者： Marc Mosch Hartmut Schweizer Stephan Gross Alexander Schill Department of Computer Science Institute of Systems Architecture Chair of Computer Networks Technische Universität Dresden Dresden Germany

Virtualization and broadband Internet connections enabled what is known today under the term cloud. Benefits like scalability and cost reduction by pay per use agreements are accompanied by potential harm to the users data. Since existing cloud solutions can be considered synonymous with unknown locations and potentially hostile environments security protection objectives can not be guaranteed. Motivated by cloud's potential we propose a way to get rid of this drawback. We present work in progress of an approach that enables users to benefit from cloud computing and retain data sovereignty by federating the users own resources. More precisely we present initial protocol design thoughts for this federation and an extension of the OCCI specification for the flexible description of own and foreign services.

关键词： Cloud computing Availability Protocols Encryption

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Global Accessible Objects (GAOs) in the ambicomp distributed java virtual machine

Global Accessible Objects (GAOs) in the ambicomp distributed...

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2nd International Conference on Sensor Technologies and Applications, SENSORCOMM 2008

作者： Saballus, Bjoern Eickhold, Johannes Fuhrmann, Thomas University of Karlsruhe Department of Computer Science System Architecture Group Am Fasanengarten 5 76131 Karlsruhe Germany Technical University Munich Boltzmannstrasse 3 85748 Garching Germany

ISBN: (纸本)9780769533308

As networked embedded sensors and actuators become more and more widespread, software developers encounter the difficulty to create applications that run distributed on these nodes: Typically, these nodes are heterogeneous, resource-limited, and there is no centralized control. The Ambicomp project tackles this problem. Its goal is to provide a distributed Java Virtual Machine (VM) that runs on the bare sensor node hardware. This VM creates a single system illusion across several nodes. Objects and threads can migrate freely between these nodes. In this paper, we address the problem of globally accessible objects. We describe how scalable source routing, a DHT-inspired routing protocol, can be used to allow access to objects regardless of their respective physical location and without any centralized component. © 2008 IEEE.

关键词： Sensor nodes

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An annotation tool for enhancing the user interface generation process for services

An annotation tool for enhancing the user interface generati...

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International Crimean Conference on Microwave & Telecommunication Technology

作者： Paoli Izquierdo Jordan Janeiro Gerald Hubsch Thomas Springer Alexander Schill Department of Computer Science Institute of System Architecture Chair of Computer Networks Dresden University of Technology Dresden Sachsen-Anhalt Germany

The user interface generation process is still a complex issue. The manual creation process is time consuming and complex because it requires the combination of the application developer work and the user interface designer work. Therefore, many approaches investigate the automatic user interface generation. However, currently such approaches are not able to take usability aspects into account, due to the lack of information for such a process. Thus, we propose a tool which intends to ease and enhance the automatic user interface generation process for services by introducing service annotations that are attached to services and provide additional information for the process of automatic user interface generation.

关键词： User interfaces Web services Data mining Inference mechanisms Graphical user interfaces computer science computer architecture computer networks Electronic mail Application software

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TAP – The Architectural Playground: A C++ Framework for Scalable Distributed Collaborative Architectural Virtual Environments

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International Journal of Architectural Computing 2003年第1期1卷 24-32页

作者： Hartmut Seichter Dirk Donath Frank Petzold The University of Hong Kong Department of Architecture Hong Kong China Bauhaus Universität Weimar Chair Computer Science in Architecture D-99423 Weimar Germany

architecture is built information [1]. Architects have the task of restructuring and translating information into buildable designs. The beginning of the design process, where the briefing is transformed into an idea, is a crucial phase in the design process. It is where the architect makes decisions that influence the rest of the design development process [2]. It is at this stage where most information is unstructured but has to be integrated into a broad context. This is where TAP is positioned – to support the architect in finding solutions through the creation of spatially structured information sets without impairing creative development. We want to enrich the inspiration of an architect with a new kind of information design. A further aspect is workflow in a distributed process where the architect's work becomes one aspect of a decentralised working pattern. The software supports collaborative work with models, sketches and text messages within a uniform environment. The representations of the various media are connected and combined with each other and the user is free to combine them according to his or her needs.

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