• Proceedings of the KSME Conference
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• 2001.06c
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• pp.164-169
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• 2001

A comprehensive extension of functions and efficiency of the software system, DS/Block, developed earlier for the purpose of simulation of the motion of a ship block during lifting and turnover operation. A viewpoint change used in 3D-CAD is utilized and saves the time for displays of a series of configurations for the motion. The Euler parameters are adopted to convert 3 rotational degrees of freedom about global coordinate system to those about local coordinate system defined in Pro/ENGINEER. DS/Block provides FEM input data for stress and strain analyses. Several functions are incorporated for user-friendliness. DS/Block is to be tested and installed in a shipyard.

• Journal of the Korean Society for Precision Engineering
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• v.17 no.6
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• pp.83-88
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• 2000

In machining large screws such as those of extruders, it takes long time to machine them on conventional machines which usually use single-tipped fixed tools. And it is also difficult to use an existing CAD/CAM coftware when trying to get over the problems of conventional machines and making use of CNC machines. In this paper, generation of machining program using rotational tools for large screws defined by longitudinal-section profile is descrebed. Use of rotational tools in machining plays an important role in saving machining time. In the sort of extruder screws, it is easy to define a screw shape by longitudinal-section profile, and by which improvement of dimensional accuracy can be expected. The CAM software developed in this paper is based on user's and designer's friendliness.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.11 no.2
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• pp.125-139
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• 2000

The purpose of this paper is to introduce and propose the vision of information design for the user-friendliness and accessibility for web-based information services. Information design, which focuses more narrowly on the information itself in one or more information units, and may encompass the information aspects of elements of design(labels, knobs, and the physical interface), information content design, page design, Web site design, typography decisions, and so forth. Information design is an alternative to all traditional approaches to information (science, philosophy, and others). Information is designed according to consciously chosen principles and criteria. rather than by following habitual patterns of a traditional profession.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.11
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• pp.180-187
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• 2003

A CAD-based seamless design system for MEMS named DS/MEMS was developed which performs coupled-field analysis, optimal and robust design. DS/MEMS has been developed by means of integrating commercial codes and inhouse code-SolidWorks, FEMAP, ANSYS and CA/MEMS. This strategy results in versatility that means to include various analysis model, corresponding analyses and approximated design sensitivity analysis and user friendliness that design variables are taken to be selectable directly from a CAD model, that the problem is formulated under a window environment and that the manual job during optimization process is almost eliminated. DS/MEMS works on a parametric CAD platform, integrating CAD modeling, analysis, and optimization. Nonlinear programming algorithms, the Taguchi method, and response surface method are made available for optimization. One application problem is taken to illustrate the proposed methodology and show the feasibility of DS/MEMS as a practical tool.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1994.04a
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• pp.344-354
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• 1994

In the development of executive information systems (EIS) the selection of an appropriate software package as a system building tool is regarded as a key technology. This paper attempts to shed some light on the evolving field of EIS software packages and provides a helpful Guideline for selecting the most suitable product by addressing significant considerations. A framework is presented that includes a six-step evaluation process: need analysis, team building, vendor survey, identification of decision criteria, and building an evaluation model and its verification. The major evaluation criteria of the full-featured software include: special functionality, reporting, graphics. decision support capability user friendliness, general functionality physical requirements, communication linkage, vendor support, cost related factors, performance, and documentation capability. An illustrative model using the analytic hierarchy process (AHP) method is also discussed to prove the appropriateness of our approach.

• Quality Improvement in Health Care
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• v.19 no.1
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• pp.74-81
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• 2013

Research Problem: 45-65% of all medical supplies in hospital are used in operating rooms. Medical supplies in operating rooms are difficult to manage in general because many of them are frequently used and come in a variety of types. Purpose: Our aim was to strive for user-friendliness and reduce the inventory through efficient management of medical supplies stocked in operating rooms. Medical Facility: Korea University, Ansan Hospital Quality Improvement Activity: On the last day of each month, we checked the inventory of medical supplies in all operating rooms by identifying the amount of medical supplies in each room, warehouse, and OCS, identified problems, and presented the ways to improve. Improvement Outcome: We increased the number of post-processing medical supply items by 8%, and reduced the inventory cost by 15% through improved management of medical supplies.

• The Transactions of the Korea Information Processing Society
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• v.5 no.6
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• pp.1537-1551
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• 1998

금후의 고도의 정보화 사회에서 발샐할 다양한 형태의 시스템 요구와 기대에 능동적이고도, 효과적으로 대처해 나가기 위해서는 보다 체계적인 컴퓨터 통신 소프트웨어 개발 방법론의 정비와 확립이 절실히 요구되고 있다. 본 논문에서는 (1)종래의 형식적 기술 기법보다 사용자 친화성(user-friendliness)이 높은 표현 기법으로 통합형 에디터의 제공, (2)(1)에서의 새로운 표현 기법으로부터 국제 표준의 형식적 기술 기법인 LOTOS로의 자동변환법의 제공, (3)형식사양 수준에서의 소프트웨어 재사용의 방법론을 제공한다. 그 결과, 사용자는 특정 FDT(Formal Description Technique)에 대한 깊은 지식이나 충분한 사용 경험이 없어도 시스템에 대한 깊은 지식이나 충분한 사용 경험이 없어도 시스템에 대한 구조적 요구와 동작요구, 데이터요구만 가지고 최종적으로 원하는 형식사양을 생성해 낼 수 있다. 이는 특정 FDT를 직접적으로 이용하는 것 보다 상대적으로 초기 학습의 부담이 적고 기술과 이해가 용이하다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2003.10a
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• pp.57-60
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• 2003

An axisymmetric compressible flow solver accounting for chemical equilibrium has been developed as an analysis tool exclusively suitable for performance prediction and optimum contour design of LRE thrust chamber. By virtue of several features focusing on user-friendliness and effectiveness including automatical grid generation and iterative calculations with changes in design parameters prescribed through only one keyword-type input file, a design engineer can evaluate very fast and easily the influences of various design inputs such as geometrical parameters and operating conditions on propulsive performance. Validations have been carried out for various aspects by detailed comparisons with the result of CEA code, experimental data of JPL nozzle, actual data for two historical engines, and ReTF data for KSR-III.

• Progress in Superconductivity and Cryogenics
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• v.17 no.3
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• pp.62-66
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• 2015

The cryostat is designed for the superconducting quadrupole magnets to be used in a heavy-ion accelerator facility. The main accelerator is superconducting linac, which can accelerate a $^{238}U$ beam to 200 MeV/u (Mega electron voltage per nucleon). The cryostat for the magnet employs an innovative design primarily driven by the requirement of the compactness, user-friendliness and reliability. Also, several ancillary requirements such as background field, space restriction due to the beam line and cryostat structure need technical attentions. The development of the cryostat for three quadrupole magnets in the in-flight fragmentation separator is presented in the paper. The concept of cryogenic design is reported and the amount of cryogenic load is estimated by a relevant analysis. The structure of the cryostat to endure the heavy iron yoke including three quadrupole magnets is presented. In addition, the design as well as the performance test of the support link for the cold mass is described.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.06a
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• pp.869-872
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• 2003

This paper presents a geometric machining simulation algorithm to enhance the reliability and user-friendliness of a comprehensive computer aided process planning (CAPP) system by verifying generated NC data. In order to represent the complex machining geometry with high accuracy, the proposed algorithm is developed based on a boundary representative (B-rep) solid modelling kernel. Solid models are used to represent the part geometry. tool swept volume and material removal volume by Boolean unite and subtract operations. By integrating a machining simulation procedure into the CAPP system, the systematic analysis of the tool path can be implemented synthetically. To demonstrate and check the validity of suggested system, a simple example of simulation is represented and the result is discussed.