INTRODUCTION: Digital technologies can offer a safe training environment for familiarisation with new surgical procedures. To enhance access and control of these virtual environments a Java Based Interface is used. ME...
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ISBN:
(纸本)078036449X
INTRODUCTION: Digital technologies can offer a safe training environment for familiarisation with new surgical procedures. To enhance access and control of these virtual environments a Java Based Interface is used. METHODS: The Exeter Virtual Worlds (EVW) Shoulder Arthroscopy Simulator is designed to teach surgical pattern recognition skills via an interactive media, using a thin client via distributed computer architecture. A Java based interface has been developed to enable the EVW system to be operated remotely from within a declarative (factual) web-based training environment. RESULTS: By using Java for the control interface, it was possible for the surgeon to operate the virtual environment from a remote machine using familiar windows style controls, which a focus group confirmed adequate for the task. CONCLUSIONS: The development of networking computerarchitectures will assist the assimilation of multiple sources and media. The interface now offers the opportunity to collect statistically significant data from such simulationsystemsembedded in an educational environment.
The proceedings contain 27 papers. The special focus in this conference is on Product Family Practice, Business, Product Family Concepts and Product Family Methods. The topics include: Component frameworks for a medic...
ISBN:
(纸本)9783540414803
The proceedings contain 27 papers. The special focus in this conference is on Product Family Practice, Business, Product Family Concepts and Product Family Methods. The topics include: Component frameworks for a medical imaging product family;meeting the product line goals for an embedded real-time system;a two-part architectural model as basis for frequency converter product families;a product line architecture for a network product;railway-control product families;a decision support tool for scoping product lines;dependency navigation in product lines using xml;summary of product family concepts session;software connectors and refinement in family architectures;organizing for software product lines;a comparison of software product family process frameworks;issues concerning variability in software product lines;a first assessment of development processes with respect to product lines and component based development;requirement modeling for families of complex systems;creating product line architectures;extending commonality analysis for embedded control system families;stakeholder-centric assessment of product family architecture and engineering software architectures, processes, and platforms for system families.
The proceedings contain 51 papers. The special focus in this conference is on System Software and Algorithms. The topics include: Charon message-passing toolkit for scientific computations;dynamic slicing of concurren...
ISBN:
(纸本)3540414290
The proceedings contain 51 papers. The special focus in this conference is on System Software and Algorithms. The topics include: Charon message-passing toolkit for scientific computations;dynamic slicing of concurrent programs;an efficient run-time scheme for exploiting parallelism on multiprocessor systems;characterization and enhancement of static mapping heuristics for heterogeneous systems;optimal segmented scan and simulation of reconfigurable architectures on fixed connection networks;reducing false causality in causal message ordering;the working-set based adaptive protocol for software distributed shared memory;evaluation of the optimal causal message ordering algorithm;register efficient mergesorting;applying patterns to improve the performance of fault tolerant CORBA;design, implementation and performance evaluation of a high performance CORBA group membership protocol;analyzing the behavior of event dispatching systems through simulation;a domain-specific semi-automatic parallelization tool;practical experiences with java compilation;performance prediction and analysis of parallel out-of-core matrix factorization;integration of task and data parallelism;parallel and distributed computational fluid dynamics;parallel congruent regions on a mesh-connected computer;can scatter communication take advantage of multidestination message passing?;a first class design constraint for future architectures;embedded computing;instruction level distributed processing;speculative multithreaded processors;a fast tree-based barrier synchronization on switch-based irregular networks;meta-data management system for high-performance large-scale scientific data access and parallel sorting algorithms with sampling techniques on clusters with processors running at different speeds.
The proceedings contain 34 papers. The special focus in this conference is on RTL Power modeling, Power Estimation, System-Level Design, Transistor-Level modeling and Asynchronous Circuit Design. The topics include: A...
ISBN:
(纸本)9783540410683
The proceedings contain 34 papers. The special focus in this conference is on RTL Power modeling, Power Estimation, System-Level Design, Transistor-Level modeling and Asynchronous Circuit Design. The topics include: Architectural design space exploration achieved through innovative RTL power estimation techniques;power models for semi-autonomous RTL macros;RTL estimation of steering logic power;reducing power consumption through dynamic frequency scaling for a class of digital receivers;framework for high-level power estimation of signal processing architectures;adaptive bus encoding techique for switching activity reduced data transfer over wide system buses;accurate power estimation of logic structures based on timed Boolean functions;a holistic approach to system level energy optimization;design-space exploration of low power coarse grained reconfigurable datapath array architectures;internal power dissipation modeling and minimization for submicronic CMOS design;degradation delay model extension to CMOS gates;second generation delay model for submicron CMOS process;semi-modular latch chains for asynchronous circuit design;comparative study on self-checking carry-propagate adders in terms of area, power and performance;VLSI Implementation of a low-power high-speed self-timed adder;low power design techniques for contactless chipcards;dynamic memory design for low data-retention power;data-reuse and parallel embeddedarchitectures for low-power, real-time multimedia applications and modeling of power consumption of adiabatic gates versus fan in and comparison with conventional gates.
The proceedings contain 93 papers. The topics discussed include: physical planning with retiming;corner block list: an effective and efficient topological representation of non-slicing floorplan;modeling non-slicing f...
ISBN:
(纸本)0780364457
The proceedings contain 93 papers. The topics discussed include: physical planning with retiming;corner block list: an effective and efficient topological representation of non-slicing floorplan;modeling non-slicing floorplans with binary trees;event driven simulation without loops or conditionals;observability analysis of embedded software for coverage-directed validation;a methodology for verifying memory access protocols in behavioral synthesis;symbolic debugging scheme for optimized hardware and software;automated data dependency size estimation with a partially fixed execution ordering;effects of global interconnect optimizations on performance estimation of deep submicron design;impact of systematic spatial intra-chip gate length variability on performance of high-speed digital circuits;and miller factor for gate-level coupling delay calculation.
The proceedings contain 43 papers. The special focus in this conference is on Modularization Concepts, Distributed System Modelling, Software architectures, Visual Graph Transformation Languages and Tool Development. ...
ISBN:
(纸本)9783540451044
The proceedings contain 43 papers. The special focus in this conference is on Modularization Concepts, Distributed System Modelling, Software architectures, Visual Graph Transformation Languages and Tool Development. The topics include: Term graph rewriting and mobile expressions in functional languages;graph transformation modules and their composition;modeling distributed systems by modular graph transformation based on refinement via rule expressions;from UML descriptions of high-level software architectures to LQN performance models;on a uniform representation of transformation systems;a note on modeling agent systems by graph transformations;compositional construction of simulation models using graph grammars;graph-based reverse engineering and reengineering tools;support for design patterns through graph transformation tools;conditional graph rewriting as a domain-independent formalism for software evolution;from graph transformation rules to rule-based programming with diagrams;using fujaba for the development of production control systems;a formal definition of structured analysis with programmable graph grammars;creating semantic representations of diagrams;defining the syntax and semantics of natural visual languages;a development environment for visual languages;a combined graph schema and graph grammar approach to consistency in distributed data modeling;improving the publication chain through high-level authoring support;learning and rewriting in fuzzy rule graphs;document table recognition by graph rewriting;image structure from monotonic dual graph contraction;planning geometric constraint decompositions via optimal graph transformations and tool support for viewpoint-oriented software development.
Recently, modeling has received a lot of attention in the design of embedded computing systems. StateCharts is one of the modeling specifications which has been successfully implemented in a commercially available too...
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Recently, modeling has received a lot of attention in the design of embedded computing systems. StateCharts is one of the modeling specifications which has been successfully implemented in a commercially available tool suite. We argue that the DEVS formalism is more expressive than StateCharts and can also be applied to the design of such systems. In this paper we want to show that we can in fact build equivalent StateChart models directly from DEVS models and execute them in the available development environments. The presented mapping of the two system modeling formalisms promises to combine the benefits of formally well-defined models and a sound tool implementation.
We propose an efficient strategy for resource management for scalable QoS guaranteed real-time communication services. This strategy is based on sink trees, and is particularly well suited for differentiated-services ...
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We propose an efficient strategy for resource management for scalable QoS guaranteed real-time communication services. This strategy is based on sink trees, and is particularly well suited for differentiated-services based architectures. We first show that finding a set of sink-trees in a given network is NP-complete. Then we propose a heuristic algorithm that always efficiently produces a set of sink-trees for a given network. Sink-tree based resource management integrates routing and resource reservation along the routes, and therefore has a number of advantages over other resource management scheme, in terms of: admission probability, link resource utilization, flow set up latency, signaling overhead, and routing over-head. In this paper we show by simulation experiments that even for simple cases the sink-tree based approach shows excellent results in terms of admission probability.
The paper describes an object oriented model and a reuse oriented methodology for the co-design of embeddedcomputersystems. Our approach is based on a hierarchy of classes which describes all possible specifications...
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The paper describes an object oriented model and a reuse oriented methodology for the co-design of embeddedcomputersystems. Our approach is based on a hierarchy of classes which describes all possible specifications of systems of a certain domain, the behavior of hardware and software components, and the target architectures. The content of this knowledge base (reusable, formalized descriptions) is determined by the analysis of known systems. We present solutions for a specification methodology, the modeling of heterogeneous systems by task graphs, and the mapping process from specified requirements down to hard- or software components in a target architecture. This approach is illustrated by functions of the domain of robot controls.
Different distributed environmental simulationsystems are presented. They take advantage of the possibilities of modern network technologies to gather input data, perform simulation and spread the simulation results....
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Different distributed environmental simulationsystems are presented. They take advantage of the possibilities of modern network technologies to gather input data, perform simulation and spread the simulation results. The term 'distributed' applies in this context both to the simulation, which is a parallel (distributed) simulation on computer networks, and to the fact, that all components (pre- and postprocessing and the simulation models) may reside in different locations and will be accessed via the Web. The systems described use this architecture to a different extent. Based on this it is shown, that it should be possible to build a system which links various data sources, simulation models, visualization and information tools, all of them running possibly remotely on the corresponding hardware. Such a system would form a distributed virtual laboratory.
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