• Title/Summary/Keyword: the Analysis of the Present Situation

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Setting the scene: CFD and symposium overview

  • Murakami, Shuzo
    • Wind and Structures
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    • v.5 no.2_3_4
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    • pp.83-88
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    • 2002
  • The present situation of CWE(Computational Wind Engineering) and the papers presented to the CWE 2000 Symposium are reviewed from the following viewpoints; 1) topics treated, 2) utilization of commercial code (software), 3) incompleteness of CWE, 4) remaining research subjects, 5) prediction accuracy, 6) new fields of CWE application, etc. Firstly, new tendencies within CWE applications are indicated. Next, the over-attention being given to the application field and the lack of attention to fundamental problems, including prediction error analysis, are pointed out. Lastly, the future trends of CFD (Computational Fluid Dynamics) applications to wind engineering design are discussed.

A Study on the Business Convergence of TV Home Shopping Markets (TV홈쇼핑 시장의 비즈니스 컨버전스화에 관한 연구)

  • Lee, Jeong-Ho
    • International Commerce and Information Review
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    • v.6 no.3
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    • pp.19-40
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    • 2004
  • The purpose of this paper is to analyze the present condition and business convergence of TV home shopping markets. This study is focused on the current situation and promotion plans of TV home shopping markets to make it better. This thesis shows the distribution characteristic and circumstances of korean distribution market and share of market. Using analysis data, the conclusion of thesis is that TV home shopping company will increase their business sector by appling T-commerce under the Ubiqutious era.

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Analysis of network evolution model and services for next generation Broadband convergence Network (차세대 광대역 통합망에서의 네트워크 진화 모델 및 서비스에 대한 분석)

  • 김상기;김정환;박경준;김태완
    • Proceedings of the IEEK Conference
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    • 2003.11c
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    • pp.93-96
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    • 2003
  • In this paper, we analyze the concept of network convergence and characteristics of Broadband convergence Network(BcN) from the service perspective where convergence would appear. We suggest the evolutionary 3 stage steps of BcN as an ideal network strategy when considering present network situation. We also propose the features of several representative services that are expected to emerge out of network convergence.

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Analysis for Natural Suitability Evaluation of Tourism Farm Using GIS (GIS를 이용한 관광농원의 자연입지 적지평가)

  • 이강복;김기성;최진용
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 1998.10a
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    • pp.192-197
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    • 1998
  • An natural suitability evaluation of tourism farm was evaluated for Sabuk Myeon, Chunchon with considering natural location. In an evaluation of natural suitability, it was classified to the grade of one to four with evaluation items of stream, road accessibility, aspect, altitude, slope, soil drain, the present situation of land use, etc.

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A Research of Safety Education System for New Employer in Korea Enterprise (국내사업장 신규채용자의 안전교육 시스템에 대한 연구)

  • 성호경;강경식
    • Journal of the Korea Safety Management & Science
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    • v.3 no.2
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    • pp.65-71
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    • 2001
  • Comparing the rate of accident in 1999 with 1998, that has been increased about 0.06%. The 56 percentage of industrial accident had been occurred by new employer, who has been worked less than 1 year, in 1999, therefore safety training and education is required for those new employer. This study is present the analysis and investigation of safety training and educational situation and consider a counterplan.

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Development of Single Doppler Color Display Interpretation System (단일 도플러 영상 자료 분석 시스템 개발)

  • 엄원근;김동호;이충기;오미림;나종천
    • Korean Journal of Remote Sensing
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    • v.10 no.1
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    • pp.31-42
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    • 1994
  • SDIAS (Single Doppler Image Analysis System), which can estimate the vertical wind profiles from single Doppler color displays, is developed here. Various single Doppler velocity signatures are simulated using horizontally uniform wind fields that vary with height. This system is very simple and efficient for interpreting the color displays. So, SDIAS can be used to get some useful informations on wind for understanding the present weather situation and forecast.

A Study on the Amendment of Act to activate the Establishment of Public Kindergarten - Focusing on Urban and Architectural Planning Act - (국·공립 유치원 설립 활성화를 위한 관련 법령 개정방안 연구 - 학교용지법 등 건축 및 도시계획 법령을 중심으로 -)

  • Cho, Chang-Hee;Dong, Jae-Uk;Lee, Hwa-Ryong
    • Journal of the Korean Institute of Educational Facilities
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    • v.26 no.2
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    • pp.11-18
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    • 2019
  • There is a growing demand for public kindergartens due to the problem of private kindergartens. However, when the kindergarten is built in the residential land development area, the cost of purchasing the land increases, and the overall project cost is increasing. This situation puts a lot of burden on educational finances. Therefore, to reduce the cost of establishing a kindergarten, it is required to revise related laws including act on the special cases concerning the procurement, etc. of school sites. The purpose of this study is to propose the revised laws to expand public kindergartens. In this study, the present situation of infants and kindergartens was analyzed through policy data and statistics. And the analysis of the investment evaluation data also analyzed the problems in establishing kindergarten. In addition, we conducted surveys and FGI analyzes on school sites and kindergarten related laws and regulations. Finally, this study aims to find a way to amend related acts of urban and architectural Planning for Invigoration of Public kindergarten establishment by analysis data.

A Proposal for Inverse Demand Curve Production of Cournot Model for Application to the Electricity Market

  • Kang Dong-Joo;Oh Tae-Kyoo;Chung Koohyung;Kim Balho H.
    • KIEE International Transactions on Power Engineering
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    • v.5A no.4
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    • pp.403-411
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    • 2005
  • At present, the Cournot model is one of the most commonly used theories to analyze the gaming situation in an oligopoly type market. However, several problems exist in the successful application of this model to the electricity market. The representative one is obtaining the inverse demand curve able to be induced from the relationship between market price and demand response. In the Cournot model, each player offers their generation quantity to obtain maximum profit, which is accomplished by reducing their quantity compared with available total capacity. As stated above, to obtain the probable Cournot equilibrium to reflect the real market situation, we have to induce the correct demand function first of all. Usually the correlation between price and demand appears over the long-term through statistical data analysis (for example, regression analysis) or by investigating consumer utility functions of several consumer groups classified as residential, industrial, and commercial. However, the elasticity has a tendency to change continuously according to the total market demand size or the level of market price. Therefore it should be updated as the trading period passes by. In this paper we propose a method for inducing and updating this price elasticity of demand function for more realistic market equilibrium.

The Method for Estimating the Inverse Demand Curve of Cournot Model in Electricity Market (전력시장 적용을 위한 쿠르노 모델에서의 역수요함수 추정 방법 제안)

  • Kang Dong-Joo;Hur Jin;Kim Tae-Hyun;Moon Young-Hwan;Lee Keun-Dae;Chung Koo-Hyung;Kim Balho H.
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.54 no.2
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    • pp.79-87
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    • 2005
  • At present Cournot model is one of the most commonly used theories to analyze the gaming situation in oligopoly market. But there exist several problems to apply this model to electricity market. The representative one is to obtain the inverse demand curve able to be induced from the relationship between market price and demand response. In Cournot model, each player offers their generation quantity to accomplish maximum profit, which is accomplished by reducing their quantity compared with available total capacity. As stated above, to obtain the probable Cournot equilibrium to reflect real market situation, we have to induce the correct demand function first of all. Usually the correlation between price and demand appears on the long-term basis through the statistical data analysis (for example, regression analysis) or by investigating consumer utility functions of several consumer groups classified as residential, industrial, and commercial. However, the elasticity has a tendency to change continuously according to the total market demand size or the level of market price. Therefore it should be updated as trading period passes by. In this paper we propose a method for inducing and updating this price elasticity of demand function for more realistic market equilibrium.

A Model of Operational Situation Analysis with Functional Safety for ASIL Determination (ASIL 결정을 위한 기능안전 운전상황 분석 모형)

  • Baek, Myoung-Sig;Jang, Hyeon Ae;Kwon, Hyuck Moo
    • Journal of the Korean Society of Safety
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    • v.29 no.4
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    • pp.160-167
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    • 2014
  • To determine a proper ASIL for each hazardous event with a proper safety goal, the right classes should first be determined for the three properties of the hazardous event; (i) severity of harm from the resultant accident, (ii) exposure to the relevant operational situation, and (iii) controllability to avoid the induced risks. ASIL can be clearly determined with right classes of these three properties. But no specific methodologies or processes for their classification can be found in ISO 26262, except only a rough guideline with a simplified set of illustrative tables. In this paper, we try to present a systematic model for classifying the three properties of the hazardous event and suggest a refined procedure of ASIL determination. The proposed model provides a specific method to get a more objective ASIL compared with that in the standard. Scrutinizing the current methodology, we develop a refined method and also provide an illustrative example.