• Transactions of the Korean Society of Automotive Engineers
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• v.2 no.6
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• pp.57-65
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• 1994

A collision-free path planning algorithm between an articulated robot and polyhedral obstacles using configuration space is presented. In configuration space, a robot is treated as a point and obstacles are treated as grown forbidden regions. Hence path planning problem is transformed into moving a point from start position to goal position without entering forbidden regions. For mapping to 3D joint space, slice projection method is used for first revolute joint and inverse kinematics is used for second and third revolute joint considering kinematic characteristics of industrial robot. Also, three projected 2D joint spaces are used in search of collision-free path. A proper example is provided to illustrate the proposed algorithm.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.19 no.5
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• pp.1-8
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• 2005

Daylight responsive dimming systems have been used to save the energy in office buildings. It is needed to consider a configuration of photosensor shape for efficient management of daylight responsive dimming systems. The configuration of optimal photosensor shape must be able to measure the exact luminous flux without changing of setting positions corresponding to the changes of room situations. On this occasion optimal photosensor shape must be designed with configuration of a proper photosensor spatial distribution and location for the daylight responsive dimming systems.

• Journal of the Korean Society of Propulsion Engineers
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• v.13 no.1
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• pp.10-18
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• 2009

Numerical simulation has been performed in this study to investigate the capabilities of turbulence modeling schemes on estimating the film cooling at a referenced parallel wall jet-nozzle configuration. Also a additional simulation has been performed for film cooling under 2-dimensional axis symmetry conditions at a parallel wall jet-nozzle configuration. It was concluded that the best turbulence model is the standard $k-{\epsilon}$ model with enhanced wall functions. Also a additional simulation showed the film cooling characteristics that are resonable physically.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.33 no.9
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• pp.16-26
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• 2005

The aerodynamic design of a proprotor for the Smart UAV adopting tiltrotor aircraft concept is conducted in this study. Since proprotor of tiltrotor aircraft is operated at both rotary and fixed wing mode with single configuration rotor, the proprotor has to be designed to meet performance requirements for both flight modes. The aerodynamic design of proprotor is accomplished by combining three sources of data - the proprotor performance data, the aerodynamic data of vehicle, and the performance data of engine. The performance analysis code for proprotor is based on the combined momentum and blade element theory and validated by comparison with the TRAM data. In order to design configuration for a proprotor satisfying requirements for both rotary and fixed wing mode, various kind of performance maps are constructed for many performance and configuration parameters. From the analysis the twist angle of 38 degrees and the solidity of 0.118 are decided to be the optimal geometric parameters for both operating conditions.

• Journal of the Korean Home Economics Association
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• v.44 no.4 s.218
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• pp.133-144
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• 2006

The contemporary period is called "the age of sensibility" in which each individual consumer seeks to have her or his own products. Businesses are in need of design developments with an emphasis on customer sensitivity, and at the same time consumers must understand their own sensitivity to acquire information on designs that suit them. This research established a sensitivity and configuration database on designing men's jackets using the sensitivity engineering approach to clothing design information. The user interface was created on the Internet. Sixty-seven sensitivity terms of vocabulary appropriate for the assessment of men's jacket design were selected, and the different designs were classified into six items and 24 categories. Thirty men's jackets with different designs were produced for sensory testing and the results were analyzed in accordance with general linear I statistics. A sensitivity database was established for each category. My-sql, PHP, Java Script, and Html were used for the configuration database work. The configuration of items/categories, with the most appropriate sensitivity database information assigned to the selected sensitivity vocabulary, was programmed for display on the computer screen. The sensitivity vocabulary of a customer's choice for each factor was selected for the program to run, while the category and product configuration of the men's jacket most suitable for the search was displayed based on the user interface.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.50 no.11
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• pp.755-762
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• 2022

The wind tunnel test data for the missile configuration were compared with analysis results using various semi-empirical code and CFD analysis code. The three types of configurations were used for comparison including 2 types of main wing, inline and interdigitate configuration that the main wing and tail intersect. Additionally, it was confirmed that the vortex flow was accurately predicted by comparing the CFD analysis result with the flow visualization test result.

• Proceedings of the Korea Contents Association Conference
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• 2003.11a
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• pp.265-268
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• 2003

Using CBD methodology, Components have been developed. In this paper, we explained that Object-oriented Design frameworks are increasingly recognized as better components than objects. And we discussed the framework concept and component configuration management method using changes. Finally, we explained object sharing in several frameworks and new framework creation process.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.2
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• pp.249-255
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• 2011

The level of information system interoperability of DPMS(Defense Procurement Management System) and DCMIS(defense weapon system configuration management information system) was measured. Two information systems interoperability is analyzed using measured results and the level of interoperability were estimated. The results was directed to the future improvement project of information system.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05c
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• pp.1673-1676
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• 2003

최근 소프트웨어 개발 및 운영 환경은 C/S, 분산환경, 다중 플랫폼, 다양한 방법론 등으로 매우 복잡해지고 있으며 이러한 환경에서 만들어지는 모든 리소스들을 효율적으로 관리한다는 것은 쉽지 않은 일이다. 이에 따라 최근 몇 년 동안 국내의 개발환경에 효과적으로 적용할 수 있는 소프트웨어 형상관리(SCM: Software Configuration Management)시스템들이 개발되고 있다. 그러나 지금까지의 형상관리시스템들은 버전관리, Build 관리, 작업공간관리, 프로세스관리들에 국한되어 있다. 본 논문에서는 컴포넌트의 형상관리에 대한 방법을 제시하고 있다. 먼저, 컴포넌트의 정보를 리파지토리에 저장하여 관리한다 리파지토리에 저장된 정보를 이용하여 컴포넌트의 버전, 크기, 개발환경, 데이터베이스, 만든 날짜, 수정날짜, 엑세스한 날짜들을 파악할 수 있다. 또한 컴포넌트가 실행 될 때 연동되어 사용되는 컴포넌트 객체들을 파악할 수 있으며, 그 access 빈도수를 도표화하여 개발자나 관리자가 모니터링이 가능하도록 지원한다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.49 no.9
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• pp.721-727
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• 2021

In this paper, aerodynamic characteristics of missile configuration with various grid fins in subsonic flow. To investigate the effects of grid fin shape, four types of experimental models were used. In addition, to examine aerodynamic characteristics of missile configurations with various grid fins according to effects of Reynolds numbers and configurations of grid fins, 6-components aerodynamic forces and moments were measured by internal balance in wind tunnel test.