• 제목/요약/키워드: computer aided simulation

검색결과 347건 처리시간 0.025초

근골격계 환자의 평가와 치료에 있어서 컴퓨터 시뮬레이션의 적용 (The Role of Computer Simulation in Assessment and Treatment)

  • 신상훈;남동현
    • 대한한의진단학회지
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    • 제13권2호
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    • pp.140-148
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    • 2009
  • The primary market of acupuncture treatment is concentrated on disorders of the musculoskeletal system. This study researches the clinical use of the musculoskeletal system evaluation with a computer simulation. Two fields are examined - patient evaluation and patient treatment. In the field of evaluation, the simulation is used to evaluates the prognosis of medical treatment. In the field of treatment, the simulation is used to decide the most suitable way to perform surgery using the quantitative evaluation about various cases of surgical results.

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Enhanced Photoresponse of Plasmonic Terahertz Wave Detector Based on Silicon Field Effect Transistors with Asymmetric Source and Drain Structures

  • Ryu, Min Woo;Kim, Sung-Ho;Kim, Kyung Rok
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제13권6호
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    • pp.576-580
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    • 2013
  • We investigate the enhanced effects of asymmetry ratio variations of the source and drain area in silicon (Si) field-effect transistor (FET). Photoresponse according to the variation of asymmetry difference between the width of source and drain are obtained by using the plasmonic terahertz (THz) wave detector simulation based on technology computer-aided design (TCAD) with the quasi-plasma 2DEG model. The simulation results demonstrate the potential of Si FETs with asymmetric source and drain structures as the promising plasmonic THz detectors.

차체 스폿트 용접 공정에서의 컴퓨터 이용 로보트 시뮬레이션 및 오프-라인 티칭 시스템

  • 남동길;김재선;백범만
    • 전기의세계
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    • 제39권6호
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    • pp.35-41
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    • 1990
  • Computer Aided Robot Simulation & Off-Line Teaching System개발은 CIM의 중추적 역할을 담당하고 제품설계 단계에서부터 생산으로 이어지는 Top-Down적 flow를 구축했다는데 의의가 있으며, 본 적용 과정을 통해 Off-Line Syste의 문제점 및 한계를 인식하고 반드시 극복해야될 과제를 얻었다는 성과가 있었다.

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유동해석을 이용한 자동차용 부품(오일팬_DX2E)의 주조방안설계에 대한 사례연구 (A Case Study on Casting Layout Design of Automotive Oil Pan_DX2E Using Computer Simulation)

  • 권홍규
    • 산업경영시스템학회지
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    • 제36권4호
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    • pp.71-76
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    • 2013
  • For a die casting mold, generally, the casting layout design should be considered based on the relation among injection system, casting condition, gate system, and cooling system. Also, the extent or the location of product defects was differentiated according to the various relations of the above conditions. In this research, in order to optimize the casting layout design of an automotive Oil Pan_DX2E, Computer Aided Engineering (CAE) simulation was performed with two layout designs by using the simulation software (AnyCasting). The simulation results were analyzed and compared carefully in order to apply them into the production die-casting mold. During the filling process with two models, internal porosities caused by air entrapments were predicted and also compared with the modification of the gate system and overflow. With the solidification analysis, internal porosities occurring during the solidification process were predicted and also compared with the modified gate system.

확률적 전투모형과 분산 네트워크 적용 (Development of Distributed Interactive Stochastic Combat Simulation (DISCSIM) Model)

  • Hong, Yoon-Gee;Kwon, Soon-Jong
    • 한국시뮬레이션학회:학술대회논문집
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    • 한국시뮬레이션학회 1999년도 추계학술대회 논문집
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    • pp.210-216
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    • 1999
  • Todays computer communication technology let people to do many unrealistic things possible and the use of those technologies is becoming increasingly prevalent throughout the military operation. Both DIS and ADS are welled defined computer aided military simulations. This study discusses a simulation of stochastic combat network modeling through Internet. We have developed two separate simulation models, one for clients and another for server, and validated for conducting studies with these two models. The object-oriented design was necessary to define the system entities and their relationship, to partition functionality into system entities, and to transform functional metrics into realizations derived from system component behaviors. Heterogeneous forces for each side are assumed at any battle node. The time trajectories for mean number of survivors at each node, some important combat measures, and relative difference computations between models were made. We observe and may conclude that the differences exist and some fo these are significant based on a limited number of experiments.

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Validation of Generalized State Space Averaging Method for Modeling and Simulation of Power Electronic Converters for Renewable Energy Systems

  • Rimmalapudi, Sita R.;Williamson, Sheldon S.;Nasiri, Adel;Emadi, Ali
    • Journal of Electrical Engineering and Technology
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    • 제2권2호
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    • pp.231-240
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    • 2007
  • This paper presents an advanced modeling and simulation technique applied to DC/DC power electronic converters fed through renewable energy power sources. The distributed generation (DG) system at the Illinois Institute of Technology, which employs a phase-l system consisting of a photovoltaic-based power system and a phase-2 system consisting of a fuel cell based primary power source, is studied. The modeling and simulation of the DG system is done using the generalized state space averaging (GSSA) method. Furthermore, the paper compares the results achieved upon simulation of the specific GSSA models with those of popular computer aided design software simulations performed on the same system. Finally, the GSSA and CAD software simulation results are accompanied with test results achieved via experimentation on both, the PV-based phase-l system and the fuel cell based phase-2 power system.

한국형 고속전철의 열차 관리제어기의 설계 및 검증 방법 (Design and Verification Method for the Train Supervisory Controller of the Korean High-Speed Tarin)

  • 유승필;이두용
    • 제어로봇시스템학회논문지
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    • 제7권1호
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    • pp.1218-1225
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    • 2001
  • This paper presents a design procedure for the supervisory controller(SC) of the high-speed train car. The proposed SC manages control logic and scenario of the overall train system, and monitors input/output signals among the sub-controllers in the system, The roles and functions of each sub-control system are defined, and the interfaces among the control systems are developed. Train control system is modeled with automata, and the model is implemented into a program using a computer-aided software engineering(CASE) tool, Object GEODE, The designed SC is verified and evaluated by using simulation. The SC is shown to successfully perform the designed functions without any errors.

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와이어 컷 방전가공을 위한 자동프로그래밍 시스템 '오토 컷'의 개발에 관한 연구 (A Study on the Development of the computer aided part programming system 'AUTO-CUT' for wire-cut EDM)

  • 이재원;강신한;강호진
    • 대한기계학회논문집
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    • 제12권2호
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    • pp.200-205
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    • 1988
  • 본 연구는 와이어 컷 방전가공을 위한 자동프로그래밍 시스템 오토 컷 (AUTO-CUT)의 개발에 관한 것으로 저자가 수행했던 연구를 확장한 것이다.

A Comparison of Three Dimensional Structures of Insulin, Proinsulin and Preproinsulin Using Computer Aided Molecular Modeling

  • Oh, Mi-Na;Mok, Hun;Lim, Yoong-Ho
    • Applied Biological Chemistry
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    • 제41권8호
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    • pp.568-571
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    • 1998
  • The conformations of human insulin precursors, proinsulin and preproinsulin, are described in terms of molecular dynamics simulations. Despite the presence of the C-peptide and/or the signal peptide, molecular dynamics calculations utilizing the hydration shell model over a period of 500 ps indicate that the native conformations of the A and B chains are well conserved in both cases. These results further support the NMR spectroscopy results that the C-peptide is relatively disordered and does not influence the overall conformation of the native structure. The robustness of the native structure as demonstrated by experiment and simulation will permit future protein engineering applications, whereby the expression or purification yields can be improved upon sequence modification of the C-peptide and/or the signal peptide.

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압출금형 설계자동화에 관한 연구 (A Study on Computer-Aided Design of Extrusion Dies)

  • 이승훈;김창우;이춘만
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 1999년도 압출 및 인발 심포지엄
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    • pp.83-88
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    • 1999
  • This study presents development of an software for process and die design of hot extrusion through square dies. The design of extrusion dies is still an art rather than a science with increasing complexity of shape and thinness of section. Therefore, most of the die design is still dependent on personal judgement, intuition and experience. The objective of this study is to develop an software system which includes a design rule extracted from literatures and experts in the extrusion industry. The system also includes finite element simulation program. The developed system is effectively used to design extrusion processes and dies with lead time and trial extrusion.

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