• 대한교통학회지
• /
• 제27권4호
• /
• pp.103-113
• /
• 2009

교통사고 발생시 119구급대의 신속한 사고현장 도착이 사고심도 감소에 가장 중요한 역할을 한다. 교통사고가 발생하여 부상자가 심정지후 4분이 경과하면 뇌손상이 시작되고 10분이 경과하면 사망할 가능성이 높은 것으로 조사되고 있다. 이에 따라 119구급대의 설치 고려시 교통사고 발생지역까지 통행시간을 고려하여 위치를 결정할 필요가 있다. 본 논문에서는 119구급대의 위치를 결정하는 방안에 대해서 기존 location theory를 검토하여 SCLM과 minisum location theory를 상호활용하는 방안을 모색하였다. 또한 기존 minisum location theory를 적용할 경우 최대통행시간($\lambda$)보다 통행 시간이 증가하는 경우가 발생할수 있는 문제점을 개선한 수정 minisum location theory를 제안한다. 수정 minisum location theory를 적용할 경우 모든 수요를 최대거리($\lambda$)내에 도착하면서 수요량과 통행시간에 대해서 최적화된 119구급대의 위치를 알 수 있다.

• 품질경영학회지
• /
• 제13권1호
• /
• pp.41-50
• /
• 1985

The purpose of this study is to consider the criteria for decision-making of industrial location in view of substituting production factors through maximizing profit instead of minimizing transportation cost. This paper makes use of mutual relationship between spatial economy in Euclidean distance and substituting production factors in production theory. Therefore, this paper will develop weak points in classical theory of industrial location by introducing production theory which has conception of substituting production factors.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2000년도 추계학술대회논문집A
• /
• pp.177-184
• /
• 2000

In this work, some inaccuracies and limitation of prior indentation theory, which is based on the deformation theory of plasticity and experimental observations, are first investigated. Then effects of major material properties on the configuration of indentation load-deflection curve are examined via incremental plasticity theory based finite element analyses. It is confirmed that subindenter deformation and stress-strain distribution from the deformation theory of plasticity are quite dissimilar to those from incremental theory of plasticity. We finally suggest the optimal data acquisition location, where the strain gradient is the least and the effect of friction is negligible. This data acquisition point increases the strain range by a factor of five.

• 한국디지털건축인테리어학회논문집
• /
• 제12권3호
• /
• pp.27-38
• /
• 2012

The purpose of this study is to analysis the concept of location efficiency, a base for the qualitative evaluation of TOD, and to propose the method of urban design for the improvement of location efficiency. Because of the environmental crisis by urbanization, sprawl and global warming, the importance of the solution through TOD has been increasing. For the future development of TOD, it becomes important to evaluate TOD qualitatively. From the study, it is grasped that location efficiency contains the concepts of value recapture, QoL and choice, financial return, and efficient regional land use and patterns. And the method of urban design for location efficiency is proposed as the followings: Form Based Zoning as land use plan, TOD and TOC model as node function, and street systems, mixed-use development, characteristic housing with various types, and networking of neighborhood facilities as place function.

• Structural Engineering and Mechanics
• /
• 제73권2호
• /
• pp.109-121
• /
• 2020

This study aims to estimate crack location and crack length in damaged beam structures using transfer matrix formulations, which are based on analytical solutions of governing equations of motion. A single variable shear deformation theory (SVSDT) that considers parabolic shear stress distribution along beam cross-section is used, as well as, Timoshenko beam theory (TBT). The cracks are modelled using massless rotational springs that divide beams into segments. In the forward problem, natural frequencies of intact and cracked beam models are calculated for different crack length and location combinations. In the inverse approach, which is the main concern of this paper, the natural frequency values obtained from experimental studies, finite element simulations and analytical solutions are used for crack identification via plots of rotational spring flexibilities against crack location. The estimated crack length and crack location values are tabulated with actual data. Three different beam models that have free-free, fixed-free and simple-simple boundary conditions are considered in the numerical analyses.

• 동굴
• /
• 제86호
• /
• pp.8-15
• /
• 2008

본 연구는 최근 광광자원으로 각광을 받고 있는 동굴관광지에 대한 관계적 입지특성을 파악하고자 할 때, 분석 기법으로서 적용 가능한 그래프이론(graphic theory)의 효율성에 관한 연구이다. 동굴관광지를 포함하는 일정 공간내의 주변관광지나 교통 결절점(node)과의 관계를 네트워크화하고, 각종 지수를 통한 전체 네트워크의 구조분석은 동굴의 연결 강도 파악과 관계적 입지특성 파악에 유용한 방법이라고 할 수 있다. 특히 동굴관광지를 포함한 관광개발계획의 공간범위 설정 등에 유용하게 사용할 수 있다.

• 한국주거학회논문집
• /
• 제10권2호
• /
• pp.213-222
• /
• 1999

This study, from conditions connected with water in Feng-Shui theory, is to find out their influence of the location and spatial composition of the studied villages, Hawei and Yangdong, and then to offer the result as basic data for the study of the traditional village in the future. The study method is to analyze topography by the map and present state of villages studied, to interprete them on the base of location, spatial composition, and chi, and then to analyze the relevancy of Feng-Shui theory of them. The result of the study are to be following: Houses of Hawei village are situated on the inside of a winding stream of waterway, while those of Yang dong village are located on the outside of a winding stream of waterway. In case of Hawei village, showed the close interrelation between the distribution of present houses and running speed of waterway by positin. Judging from the location, orientation and surroundings of mountains and waterway, topographical composition of Hawei village is Duk su guk, but that of Yang dong village is Juang feng guk. Comparing with Yang dong and Hawei in location and spatial composition, the conditions of waterway as being locational factor, for example, the geomancy of situation, orientation, and phisical phenomena(lenth, width, and depth of waterway in front of village) of waterway, are more importantly considered in Hawei village being situated on even land than in Yang dong located at the foot of the mountain.

• 대한안전경영과학회지
• /
• 제10권1호
• /
• pp.91-105
• /
• 2008

Nowadays, circulation industry is taking charge of important role in improvement of competitive power on the manufacturing industry and public welfare increase of consumer, price stabilization, employment creation and so on. A lot of research have been progressing for formation of total circulation complex, but decision making for selection of location on some facility is only calculated the optimum value when correct data values are inserted. However, a lot of decision making is accomplished in situation that have little knowledge of objective and constraints and as real world is also evaluated inclusive of analyst's subjectivity about variable, indefinite and fuzzy part, so it is decreasing a reliability on evaluation result and complicating objective evaluation on various effect and negative impact. Accordingly, from under like this situation, this study is to develop location decision model of circulation complex using fuzzy theory from the intention for the most reasonable decision making in fuzzy situation based on decision making problem on conventional location and size decision that did to be satisfactory constraints necessarily.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2000년도 추계학술대회논문집A
• /
• pp.185-192
• /
• 2000

A novel indentation theory is proposed by examining the data from the incremental plasticity theory based finite element analyses. First the optimal data acquisition location is selected, where the strain gradient is the least and the effect of friction is negligible. This data acquisition point increases the strain range by a factor of five. Numerical regressions of obtained data exhibit that strain hardening exponent and yield strain are the two main parameters which govern the subindenter deformation characteristics. The new indentation theory successfully provides the stress-strain curve with an average error less than 3%.

• Korean Journal of Acupuncture
• /
• 제37권2호
• /
• pp.122-129
• /
• 2020

Objectives : The objective of this study was to examine the acupoint location of Sameumgyo (SP6) from classic literatures. Methods : A review of SP6 acupoint location on 13 classics of acupuncture and moxibustion was performed. Results : Differences of SP6 acupoint location were found by classics of acupuncture and moxibustion. 9 classics of acupuncture and moxibustion said the acupoint of SP6 was located on 3 cun above the tip of the medial malleoulus, however acupoint location of SP6 was described on 8 cun above the tip of the medial malleoulus by 4 classics of acupuncture and moxibustion. Conclusions : Through a classic literature review, it was possible for the explanation that the location of SP6 was 8 cun above the tip of the medial malleoulus, but it was not intended to overturn the theory of 3 cun above the tip of the medial malleoulus regarding location of SP6. This study may be the starting point for future experimental or clinical studies for exploring new acupoint, and is expected to follow up.