• Title/Summary/Keyword: development characteristic

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Railway carbody analysis technology development for application Europe crashworthiness standard. (유럽 충돌안전도 규격 적용 철도차량 차체 해석 기술 개발)

  • Jeong, Ji-Ho;Park, Hyung-Soon;Park, Guen-Soo;Lee, Jang-Wook
    • Proceedings of the KSR Conference
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    • 2006.11b
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    • pp.231-237
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    • 2006
  • Recently railroad industry pulls a new interest with stability, fixed time characteristic, low environment pollution characteristic and mass transportation characteristic. With industrial development railroad it joins in, The many research and regulation production are coming to do. Specially like this activities are coming to be advanced actively from North America and Europe. From viewpoint of railway car production company, The vehicle production that a suitable Europe standard is essentiality for find a Europe market that The whole vehicle consuming hold it does a most big specific gravity. From this study, developed finite element model for analysis technology about crashworthiness of inside GM/RT 2100 standard and analyzed crash results.

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Development of Automated Display Image Characteristic Inspection System of Braun Tube(CRT) (브라운관의 화상계측 자동화 시스템 개발)

  • 유우식;장성호;이도경
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.18 no.35
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    • pp.1-8
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    • 1995
  • Automatic inspection system software for display image characteristic of CRT is developed. There are two major contributions of this software development. One is that the data from measuring equipments which was usually collected manually is automatically collected through RS-232C port and is saved in computer, then, trend analysis graph and final reports are generated. The other is that evauation of characteristic of electron gun was automatically processed by CCD camera and image processing technique. The system is developed under MS-Windows environment utilizing Borland C++4.0 Compiler and DT 3852-8 image processor board. This system can save the time and man power to measure and to anayze the image characteristics relative to current method.

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Development and Characteristic of Elder Education Policy in Korea (한국 노인교육정책의 전개와 특징)

  • Lee, hye-youn;Kim, ki-seok
    • 한국노년학
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    • v.29 no.3
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    • pp.935-951
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    • 2009
  • This study purposed to explain the development process on elder education policy in Korea and to find out its characteristic. As previous studies mainly described the current situation of elder education policy to make a proposal, the analysis of the development process and its characteristic was ignored. Analyzing the government documents the elder education policy was started as a part of by considering the part in saemaul(New-village) movement, the current policy support for the elderly leads to the training of human resources. In the process, characteristic of policy are as follows, first, the policy objectives and targets has changed. And in the late 1990s, most of the established elder education policy was not to run. Finally, it is not match between policy making and implementation.

A Study on the characteristic of Street Markets in Land Development District (택지개발지구내 가로형시장의 특성에 관한 연구)

  • 김주현;하재명
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2002.11a
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    • pp.131-136
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    • 2002
  • The purpose of this study is to analyze the characteristic of street markets in land development district, Dae-gu(Sung-su, Yeoung-san and Si-gy Land development districts). The result of this study is as follows, Street markets are located between detached housing estates and cooperative housing estates. Street markets are classified as private road type, linear street type and mixed type, The influential area of street markets is extended form inside of detached housing estates to arterial road. The vitality of street markets is explained by the scale of dwelling area, road system and variety of function.

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A Study on the Planning for Rural Housing Complex Considering Regional Characteristic - Focused on Nok-dong district, Ian Myoun, Sang-Ju, Gyeong Buk (지역적 특성을 고려한 농촌주거단지계획 연구 - 경북 상주시 이안면 녹동마을 사례를 중심으로)

  • Lee, Ho-Jung;Ryu, Soo-Hoon
    • Journal of the Korean Institute of Rural Architecture
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    • v.10 no.1
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    • pp.75-82
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    • 2008
  • This study is about land use and site plan for resident redevelopment for districts with existing residents. The study suggests development direction focusing on preserving the regional characteristics, and presentation of suburban-style housing complex reflecting on the future tenant's individuality and demand. The preexisting development approach for suburban-style housing complex which was planned by the developer, failed to recognize taste of the future tenants. Profitability being the priority, it also resulted in a serious environmental disruption. In this development however, through a systematic direction for site development and site analysis, conducting surveys through future tenants, attempted for a continuous growth of the community. The study is presented covering the following areas; site's pathway system, nature conservation plan, lot plan, land use and arrangement plan, and community facility.

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A Study of the Scientific Characteristic of Mathematical Concepts and Curriculum Design (수학적 개념의 과학적 성격과 교육과정 구성과의 관련성 연구)

  • 고정화
    • Journal of Educational Research in Mathematics
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    • v.12 no.2
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    • pp.213-228
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    • 2002
  • We know that curriculum is, first of all, related to teaching materials, namely, contents. Therefore, when we think of mathematics curriculum, we must take account of characteristic of mathematics. Vygotsky has studied the development of scientific concepts and everyday concepts. According to Vygotsky, scientific concepts grow down through spontaneous concepts; spontaneous concepts grow upward through scientific concepts. And mathematics is a representative of subjects dealing with scientific or theoretical concept. Therefore, his study provides scientific basis for mathematics curriculum design. In this context, Davydov notes that everyday concepts are developed through empirical abstraction, while scientific concepts require a theoretical abstraction. And Davydov constructed the curriculum materials for the teaching of number concept. Davydov's curriculum is an example of reflecting Vygotsky' theoretical view and his view about the types of abstraction. In particular, it represents mathematical characteristic of a 'science' by introducing number concept through quantitative relationship and use of signs. In conclusion, stance mathematical concepts have scientific characteristic, mathematics curriculum reflects this characteristic.

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Evaluation of the Aerodynamic characteristic on the Pantograph model (구매조건부 판토그라프 모델에 대한 공력특성 평가)

  • Kim, Ki-Nam;Cho, Yong-Hyeon;Ko, Tae-Hwan;Kwon, Hyeok-Bin
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.152-161
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    • 2009
  • This thesis aims to report the result of an evaluation of the aerodynamic characteristic on the purchase conditional pantograph model that has developed for applying to the KTX-I. Development pantograph was derived the result of aerodynamic characteristic through a wind tunnel test. And design modification was proceeded to solve the difference of aerodynamic characteristic by pantograph's operating direction. The verification test and adjustment test about the modified pantograph's aerodynamic characteristic were progressed on the KTX-I. To be corresponded with requirements, the airfoil and spoiler were used.

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A Study on Effects of Franchise Distribution Employees on Occupational Identity

  • KIM, Ki-Soo;CHO, Sung-Ho;KIM, Sung-Hun
    • Journal of Distribution Science
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    • v.17 no.9
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    • pp.83-92
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    • 2019
  • Purpose - This research is to verify job fitness, empowerment, and recognition of career development support having the influence on formation of occupational identity in Korean food franchise distribution company. Research design, data, and methodology - Total 600 copies have been distributed and 394 copies have been collected, the covariance structure analysis has been implemented to verify the presented research hypothesis. Results - Demand fit and competency fit being the lower level of job fitness appeared not to have significant influence on occupational identity, and also these do not have the significant influence on the empowerment. Even though formal career development support being lower level of career development recognition appeared to have significant influence on empowerment, nonformal career development support appeared not to have significant influence on empowerment. Formal career development support and nonformal career development support appeared to have significant influence on occupational identity. Finally, empowerment appeared to have significant influence on occupational identity. Conclusions - It is implied that the psychological and subjective success felt in employee's career course may be improved by the job related job fitness, the initiative being individual characteristic and formal and formless career development support being organizational characteristic.

Effects of Swirl on Flame Development and Late Combustion Characteristic in a High Speed Single-Shot Visualized SI Engine (고속 단발 가시화 스파크 점화 엔진에서의 연소 특성에 대한 선회효과 연구)

  • Kim, S.S.;Kim, S.S.
    • Transactions of the Korean Society of Automotive Engineers
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    • v.3 no.1
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    • pp.54-64
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    • 1995
  • The effects of swirl on early flame development and late combustion characteristic were investigated using a high speed single-shot visualized 51 engine. LDV measurements were performed to get better understanding of the flow field in this combustion chamber. Spark plugs were located at half radius (R/2) and central location of bore. High speed schlieren photographs at 20,000 frames/sec were taken to visualize the detailed formation and development of the flame kernel with cylinder pressure measurements. This study showed that high swirl gave favorable effects on combustion-related performances in terms of the maximum cylinder pressure and flame growth rate regardless of spark position. However, at R/2 ignition the low swirl shown desirable effects at low engine speed gave worse performances as engine speed increased than without swirl. There were distinct signs of slow-down in flame growth during the period when the flame front expanded from 2.5mm in radius until it reached 5.0mm apparently due to the presence of ground electrode. There seemed to be heat transfer effect on the flame expansion speed which was evidenced in high swirl case by the slowdown of the late flame front presumably caused by relatively large heat loss from burned gas to wall compared with low- or no-swirl cases.

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Dynamic Characteristic Study of Hingeless Blade Stiffness Reinforcement for Bearingless Rotor Whirl Tower Test (무베어링 로터 훨타워 시험을 위한 무힌지 블레이드 강성보강에 따른 동특성 연구)

  • Kim, Tae-Joo;Yun, Chul-Yong;Kee, Young-Joong;Kim, Seung-Ho;Jung, Sung-Nam
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2012.04a
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    • pp.622-627
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    • 2012
  • During helicopter rotor system development process, whirl tower test is conducted basically. For conducting whirl tower test during bearingless hub development process, design new blade or using existing blade with repair or remodeling. Because simple shape and efficient aerodynamic characteristic, BO-105 blade is used for hub system development widely. Originally BO-105 blade is used for hingeless hub, ho flap stiffness and lag stiffness on blade root area is relatively low. So applying BO-105 blade to bearingless hub whirl tower test, root area have to be reinforce. In this process, blade root area's section property will be changed. In this paper, suggest reinforcement method of BO-105 blade root area and study dynamic characteristic of bearingless rotor system with reinforcement BO-105 blade.

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