Within the framework of the OMID joint project (1999 2002) funded by the BMBF, a universal, fluidically driven actuator plate is being developed in cooperation with the project partners of Bartels Mikrotechnik GmbH an...
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ISBN:
(纸本)0970827571
Within the framework of the OMID joint project (1999 2002) funded by the BMBF, a universal, fluidically driven actuator plate is being developed in cooperation with the project partners of Bartels Mikrotechnik GmbH and AN-SOFT GmbH. This actuator plate is to be applied as an integrated microsystem component for the conversion of fluidic energy into mechanical energy. Applications of the micro actuator include tactile arrays for high-resolution Braille displays or high-pole micro relays. The present contribution deals with topology optimization using evolutionary algorithms and a parameterizable finite element method (FEM) simulation model. The use of evolutionary algorithms requires short simulation times for evaluation. For this reason, close-to-physics simulation models based on discrete element methods cannot be used so far for this purpose, due to their usually long computation times (compared to higher models). In contrast to this, the parallel version of the GADO (Genetic Algorithms for Design optimization) optimization tool developed by our Institute allows for the use of close-to-physics simulation models in optimization with a global search strategy.
PROMODEL's simulationmodeling products are powerful yet easy-to-use simulation tools for modeling all types of systems and processes. ProModel® is designed to model manufacturing systems ranging from small...
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PROMODEL's simulationmodeling products are powerful yet easy-to-use simulation tools for modeling all types of systems and processes. ProModel® is designed to model manufacturing systems ranging from small job shops and machining cells to large mass production, flexible manufacturing systems, and supply chain systems. Other simulation products available from PROMODEL Corporation include MedModel®, ServiceModel®, Innovate™, and ProModel PI™ (for process improvement). PROMODEL products are Windows based applications with intuitive graphical interfaces and object-oriented modeling constructs, eliminating the need for programming. They combine the flexibility of a general-purpose simulation language with the convenience of data-driven simulators. This paper provides an overview of ProModel and presents its modeling, analysis, and optimization capabilities.
Melt growth processes provide the basic crystalline materials for many applications. The research and development of crystal growth processes is therefore driven by the demands which arise from these specific applicat...
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Melt growth processes provide the basic crystalline materials for many applications. The research and development of crystal growth processes is therefore driven by the demands which arise from these specific applications;however, common goals include an increased Uniformity of the relevant crystal properties at the micro- and macro-scale, a decrease of deleterious crystal defects, and all increase of crystal dimensions. As melt growth equipment and experimentation becomes more and more expensive, little room remains for improvements by trial and error procedures. A more successful strategy is to optimize the crystal growth process by a combined use of experimental process analysis and computer modeling. This will be demonstrated in this paper by several examples from the bulk growth of silicon, gallium arsenide. indium phosphide, and calcium fluoride. These examples also involve the most important melt growth techniques, crystal Pulling (Czochralski methods) and vertical gradient freeze (Bridgman-type methods). The power and success of the above optimization strategy, however, is not limited only to the given examples but can be generalized and applied to many types of bulk crystal growth. (C) 2002 Elsevier Science B.V. All rights reserved.
The proceedings contains 117 papers. Topics discussed include substrate modeling, design for low power, routing, advances in testing, high level synthesis, formal techniques for validation and synthesis, subthreshold ...
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The proceedings contains 117 papers. Topics discussed include substrate modeling, design for low power, routing, advances in testing, high level synthesis, formal techniques for validation and synthesis, subthreshold leakage modeling and reduction techniques, timing-driven placement, inductance modeling, efficient simulation for analog and radio frequency, interconnect optimization, chip-level communication structures, density functional theory, system-level analog design, inductance modeling, circuits and systems, low power and transistor level optimization, statistical techniques for power and timing estimation, computer aided design computation for manufacturability, satisfiability checking, molecular electronics, circuit level analog computer aided design, physical effects in deep sub micron technology, verification at the switch, logic synthesis, memory issues in high level synthesis, noise effects on circuit operation, low level aware behavior synthesis, advances in timing analysis accuracy, customization of embedded system architectures, advances in combinatorial synthesis and system level performance and power modeling and optimization, model order reduction, advances in dynamic voltage scheduling and Boolean engines for formal hardware verification.
The proceedings contain 67 papers. The topics discussed include: simulation of DGSOI MOSFETs with a Schrodinger-Poisson based mobility model;ensemble Monte Carlo/molecular dynamics simulation of inversion layer mobili...
ISBN:
(纸本)4891140275
The proceedings contain 67 papers. The topics discussed include: simulation of DGSOI MOSFETs with a Schrodinger-Poisson based mobility model;ensemble Monte Carlo/molecular dynamics simulation of inversion layer mobility in Si MOSFETs -effects of substrate impurity;a strategy for enabling predictive TCAD in development of sub-100nm CMOS technologies;GIDL simulation and optimization for 0.13 fl m11.W low power CMOS transistor design;TCAD driven drain engineering for hot carrier reduction of 3.3V U0 PMOSFET;circuit-simulation model of gate-drain-capacitance changes in small-size MOSFETs due to high channel-field gradients;a comprehensive simulation study on strained-SUSiGe nMODFET scaling for RF applications;realistic scaling scenario for sub-100nm embedded SRAM based on 3-dimensional interconnect simulation;on the large-signal CMOS modeling and parameter extraction for RF applications;drift-diffusion-based modeling of the non-quasistatic small-signal response for RF-MOSFET applications;and multiscale simulation of diffusion, deactivation, and segregation of dopants - ab-initio to continuum.
The proceedings contain 34 papers. The special focus in this conference is on Object-Oriented Information Systems. The topics include: Reuse in object-oriented information systems design;software reuse with use case p...
ISBN:
(纸本)9783540440888
The proceedings contain 34 papers. The special focus in this conference is on Object-Oriented Information Systems. The topics include: Reuse in object-oriented information systems design;software reuse with use case patterns;promoting reuse through the capture of system description;a specification-oriented framework for information system user interfaces;the role of pattern languages in the instantiation of object-oriented frameworks;IS components with hyperclasses;Collaborative simulation by reuse of COTS simulators with a reflexive XML middleware1;efficient web-based information systems;semantic integration and query optimization of heterogeneous data sources*: (Invited Paper);“Real World” as an argument for covariant specialization in programming and modeling;extracting information from semi-structured web documents;object-oriented mediator queries to internet search engines;Warp-edge optimization in XPath;A caching system for web content generated from XML sources using XSLT;finding similar queries to satisfy searches based on query traces;WOnDA: An extensible multi-platform hypermedia design model;model-driven approaches to software development;executable and symbolic conformance tests for implementation models (position paper);object-oriented theories for model driven architecture;systems engineering foundations of software systems integration;maintaining class membership information;Using the model paradigm for real-time systems development: ACCORD/UML;generating enterprise applications from models;tool support for aspect-oriented design;model-driven architecture;model-based development of embedded systems;hierarchies in object oriented conceptual modeling;specialization/generalization in object-oriented analysis: Strengthening and multiple partitioning;towards a new role paradigm for object-oriented modeling;analysing object-oriented application frameworks using concept analysis;using both specialisation and generalisation in a programming language: Why and
Detailed two-dimensional modeling of double-shell gas puffs driven by both the Double Eagle facility and the Decade Quad facility have been performed using the Air Force Research Laboratory MHD code, MACH2. The calcul...
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Detailed two-dimensional modeling of double-shell gas puffs driven by both the Double Eagle facility and the Decade Quad facility have been performed using the Air Force Research Laboratory MHD code, MACH2. The calculations have been benchmarked against experimental results in a variety of ways;comparisons between calculations and experiments will be presented. The calculations use a simple two-level model of atomic physics to predict the K-shell yield of the imploding argon load. This provides a quick means of assessing the performance of the PRS. An optimization study has been conducted to determine the best plena pressures with respect to K-shell yield;results from this study will be presented. The role of heat conduction from the nozzle walls to the expanding gas and is also examine and found to be of potential importance. Finally, the role of nozzle geometry is studied. Specific geometries used in experiments are compared to one another with respect to their argon K-shell yield.
The proceedings contain 49 papers. The special focus in this conference is on Arithmetics, Low-Level modeling, Characterization, Asynchronous and Adiabatic Techniques. The topics include: An improved power macro-model...
ISBN:
(纸本)9783540441434
The proceedings contain 49 papers. The special focus in this conference is on Arithmetics, Low-Level modeling, Characterization, Asynchronous and Adiabatic Techniques. The topics include: An improved power macro-model for arithmetic Datapath components;performance comparison of VLSI adders using logical effort;a high-performance low power DSP architecture;impact of technology in power-grid-induced noise;exploiting metal layer characteristics for low-power routing;instrumentation set-up for instruction level power modeling;resonant multistage charging of dominant capacitances;a new methodology to design low-power asynchronous circuits;designing carry look-ahead adders with an adiabatic logic standard-cell library;clocking and clocked storage elements in multi-GHZ environment;dual supply voltage scaling in a conventional power-driven logic synthesis environment;robust sat-based search algorithm for leakage power reduction;a new methodology for efficient synchronization of RNS-based VLSI systems;clock distribution network optimization under self-heating and timing constraints;a compact charge-based propagation delay model for submicronic CMOS buffers;output waveform evaluation of basic pass transistor structure;an approach to energy consumption modeling in RC ladder circuits;structure independent representation of output transition time for CMOS library;a low energy clustered instruction memory hierarchy for long instruction word processors;design and realization of a low power register file using energy model;register file energy reduction by operand data reuse;trends in ultralow-voltage ram technology and offline data profiling techniques to enhance memory compression in embedded systems.
simulation-based wafer fabrication optimization models require extensive computational time to obtain accurate estimates of output parameters. This research seeks to develop goal-drivenoptimization methodologies for ...
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simulation-based wafer fabrication optimization models require extensive computational time to obtain accurate estimates of output parameters. This research seeks to develop goal-drivenoptimization methodologies for a variety of semiconductor manufacturing problems using appropriate combinations of "resource-driven" (R-D), "job-driven" (J-D), and mixed (combination of R-D and J-D) models to reduce simulation run times. The initial phase of this research investigates two issues: (a) the use of the R-D simulation control variates for the J-D simulation and (b) development of metrics that calibrate the output from the R-D and J-D modeling paradigms. The use of the R-D model as a control variate is proposed to reduce the variance of J-D model output. Second, in order to use the R-D model output to predict the J-D model output, calibration metrics for the R-D and J-D modeling approaches were developed. Initial developments were tested using an M/M/1 queuing system and an M/D/1 queuing system.
simulation-based wafer fabrication optimization models require extensive computational time to obtain accurate estimates of output parameters. This research seeks to develop goal-drivenoptimization methodologies for ...
ISBN:
(纸本)9780780376151
simulation-based wafer fabrication optimization models require extensive computational time to obtain accurate estimates of output parameters. This research seeks to develop goal-drivenoptimization methodologies for a variety of semiconductor manufacturing problems using appropriate combinations of "resource-driven" (R-D), "job-driven" (J-D), and Mixed (combination of R-D and J-D) models to reduce simulation run times. The initial phase of this research investigates two issues: a) the use of the R-D simulation control variates for the J-D simulation and b) development of metrics that calibrate the output from the R-D and J-D modeling paradigms. The use of the R-D model as a control variate is proposed to reduce the variance of J-D model output. Second, in order to use the R-D model output to predict the J-D model output, calibration metrics for the R-D and J-D modeling approaches were developed. Initial developments were tested using an M/M/1 queuing system and an M/D/1 queuing system.
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