• Spatial Information Research
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• 제10권2호
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• pp.185-199
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• 2002

본 연구에서는 가변적 공간 단위의 문제를 고려한 시공간 자료 분석 방법을 탐색하는 것을 목적으로 하였다. 기존의 시계열 연구에서는 행정 구역 신설이나 경계 변동같은 공간 단위(areal unit)의 가변성을 제대로 반영하지 못했기 때문에 속성 자료와 공간 자료의 불부합 현상이 있었다. 지역의 공간적 특성과 시공간적 변화를 지가 변동분석을 통하여 살펴보기 위해서는 분석 공간 단위의 가변성에 영향을 받지 않도록 개별적인 정보를 유지할 수 있는 시공간 데이터베이스를 구축하는 것이 필요하다. 이 연구에서는 기본 격자로 공간 단위를 구성함으로써 분석 기준 시점의 속성 자료와 공간자료를 일치시킬 수 있었기 때문에 ‘가변적 공간 단위의 문제’를 보완할 수 있었다.

• 한국의류학회지
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• 제26권5호
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• pp.606-617
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• 2002

The purpose of this study is to develop a decision model that helps manufacturers and retailers determine the optimal timing of markdown in order to maximize their profit. An optimal timing decision model was developed based on three steps; conjoint measurement, scenario analysis and simulation. Data were collected from the sample of 149 out of 170 undergraduate and graduate students in Seoul in 1997. From the Jeans market, 8 brands; Levi's, lee, Guess, Calvin Klein, Pintos, Get used, MFG, and Basic, were selected as competitors for this study. In the conjoint measurement, respondents estimated the level of preference, from 1 to 100, for each item in which brand, price, style, and colors were used to explain product characteristics. Then, in order to reflect competitive situation in Jeans market, four types of scenarios were developed. In each scenario, simulations were applied to decide optimal timing of markdowns that leads to maximal profitability and sales volume. The profit was calculated based on the equation; Profit = Jean's market volume x market share of each brand - cost, where market volume was obtained by integral calculus for market utility function, and market share by logit value of part-worth from the conjoint analysis. For the purpose of the parsimony of the research, costs and the level of markdown were fixed to 30% of the regular price. In results, the optimal timing decision model identified 3 different types of brands. The brands that do not need to take markdown were Ievi's, MFG, and Basic Jeans characterized by the highest brand power and the highest price zone. The brands that needed to take early markdowns were Guess, Lee, Calvin Klein, and Get Used with the intermediate level of brand power and price. The brand that need late markdown was Pintos with the weakest brand power among the competitors and the lowest price. The optimal range of markdown remains for further research.

• 대한전기학회논문지:전력기술부문A
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• 제55권4호
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• pp.156-162
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• 2006

Transmission zones can be defined based on LMPs. Each zone consists of nodes with similar LMPs, and zonal price is determined by average nodal prices in each zone.[1] Network reduction is still important for the analysis of zonal systems under electricity market environments, even though the computing capability of computer system can deal with entire power systems. The Similarity Index is a good performance measure for the network reduction.[2] It can be applied to the network reduction between zones categorized by the nodal prices. This paper deals with a novel network reduction method between zones based on the similarity Index. Line admittances of reduced network were determined by using the least square method. The proposed method was verified by IEEE 39 bus test system.

• Journal of Construction Engineering and Project Management
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• 제3권4호
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• pp.12-19
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• 2013

Green Frame is an environmentally friendly column-beam system composed of composite PC members that can increase buildings' life spans while reducing resource consumption. Typically, connections of PC and RC columns occur at the boundaries of each floor, which is at the upper section of slabs, causing the boundary of each floor to generate the maximum moment. Although it is not optimal in terms of structural safety to connect members at a location where the moment is high, this approach is highly adopted due to its constructability. We propose that a superior approach that employs the concept of connecting columns at the low bending moment zone can be applied to quickly and safely install green columns, the main structural members of Green Frame. Connection of green columns at the low bending moment zone can be classified into three techniques, depending on the method of reinforcing the joints, which have different connection characteristics and construction methods. Research is needed to compare the features of each method of reinforcing the joints so that the most appropriate column connection method can be chosen for the site conditions. This study aims to confirm the structural safety of the connection component at the low bending moment zone and to compare and analyze the construction duration, unit price, quality and safety performance of each column connection method. The study results are anticipated to activate the use of composite precast concrete and to be used as development data in the future.

• 대한토목학회논문집
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• 제40권3호
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• pp.295-302
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• 2020

방재지구는 재해위험이 큰 지역에 대해서 지정을 의무화하고, 법적 근거를 통해 재해에 안전한 지역으로 개선하기 위한 용도지구이다. 그러나 현재 방재지구 지정시 대상지역의 부동산 가치하락을 이유로 지정을 기피함에 따라 제도의 실효성 저하가 문제점으로 지적되고 있다. 따라서 본 연구는 2006년에 지정된 서울특별시 방재지구 4개소를 대상으로 방재지구의 지정과 토지가격의 상관성을 규명하고자 한다. 분석결과, 예상과는 반대로 방재지구로 지정된 필지의 개별 공시지가가 방재지구로 지정되지 않은 주변지역보다 약 42만원 높은 것으로 나타났으며, 통계적으로 유의하였다. 즉, 방재지구로 지정되었다고 해서 해당 방재지구의 부동산 가치가 하락한다고는 단정하기 어렵다. 따라서 방재지구 지정에 따른 해당 지역의 연계사업, 방재지구에 대한 지역주민들의 인식 등 방재지구의 실효성 저하에 대한 원인을 명확하게 규명할 필요가 있다. 그런 의미에서 본 연구결과는 단순히 방재지구의 지정이 토지의 가격을 하락할 것이라는 인식을 전환하기 위한 근거를 마련했다고 볼 수 있다.

• International Journal of Human Ecology
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• 제12권2호
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• pp.39-50
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• 2011

This study surveys the state of 'children's snacks' sold within the Green Food Zone and that of High Calorie Foods with Low Nutrition Value (HCFLNV). The main purposes are the analyses of foods in accordance to KFDA Program for HCFLNV and an analysis of differences in HCFLNV that are dependent on relevant factors such as food types, school types, origins, the scale of manufacturing company, area and price. Based on the analyses, educational and political implications have been sought that will form nutritious dietary habits, contribute to the prevention of obesity, and improve health in child consumers. The methodologies of this study are literature studies and surveys. The results of this study can be summarized as following. First, the number of children's snacks is 517 items of total 645 gathered within 150 Green Food Zones. Candies are the most popular item, next are cookies, chocolates, and breads. Second, in the real state survey there are 186 HCFLNV (36.0%) among children's snacks sold within Green Food Zone. Based on the survey results, the marking of HCFLNV on the package of children's snacks and the extension of the ban of HCFLNV sales to all stores within the Green Food Zone are strongly suggested. This provides preliminary data related to children's snacks and food safety. With enforcement of the Special Act on the Safety Management of Children's Dietary Life, the rate of HCFLNV has decreased and the child snack product environment in stores has improved. However, it is necessary to supervise low-priced snacks and promote an awareness of HCFLNV along with the child consumer education of food safety is needed.

• 한국지리정보학회지
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• 제18권2호
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• pp.16-27
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• 2015

기존의 수작업에 의한 토지이동 대상필지 업무는 시간과 비용측면에서 매우 비효율적이며, 특히 접도구역의 구간을 고려하지 않았기 때문에 보상비 산정시 많은 어려움을 야기시켰다. 본 연구에 서는 전라북도 김제시를 대상지로 선정하였으며, 지적도와 새주소시스템의 실폭도로 레이어를 기 반으로 접도구역 구간을 고려하여 토지이동 대상필지수와 면적을 분석할 수 있었다. 또한 도로편 입률에 따른 퍼지함수를 적용한 후 토지이동 대상 필지별 개별공시지가 정보를 이용하여 접도구역 구간별로 보상비를 분석하였다. 특히 접도구역별 퍼지소속함수에 따라 공유지와 사유지의 보상비 변화를 살펴볼 수 있었다. 그리고 접도구역 구간별로 읍면동별 토지이동 대상필지에 대한 보상비를 산정함으로서 지자체의 토지이동 대상필지 우선 순위를 결정하는데 매우 유용한 자료를 제공할 수 있었다.

• 지역연구
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• 제38권4호
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• pp.45-58
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• 2022

본 연구는 10여 년의 역사를 지니고 국제학교의 계기가 된 인천 송도국제학교를 대상으로 국제학교 입지가 아파트 매매 및 전월세 가격에 미치는 영향요인 비교·분석이다. 개교 후 10년이 경과한 최근 시점에서 국제학교 인근지역 아파트를 매매시장과 전월세시장으로 구분하여 분석을 실시한다. 계획도시로 설계된 송도국제도시를 공간적 범위로, 코로나 이후의 부동산 과열시기를 피해 상대적으로 부동산 안정기에 해당하는 2018-19년도를 시간적 분석기간으로 설정하였다. 국제학교 주변에 형성된 학원가와 국내외 대학의 송도캠퍼스 개교 등 '신 교육특구' 의 도시이미지를 고려하여 교육요인 변수를 추가하여 전통적 헤도닉 가격모형을 바탕으로 다중회귀모형을 적용하였다. 실증분석 결과, 첫째, 매매와 전월세의 가격결정요인에서 차이점이 확인되었다. 둘째, 국제학교 가격영향력이 다른 변수보다 매우 높게 나왔다. 셋째, 국제학교 영향력은 매매시장보다 전월세 시장에서 두드러지게 나타났다.

• 한국의류학회지
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• 제31권8호
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• pp.1180-1189
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• 2007

The purpose of this study is to search the level of localization strategy of imported brands in Korean Market, to investigate relationship between the brand characteristics and localization strategy, and to study the case about localization strategy of the brand selected according to the type of brand. The survey research was employed and for the data analysis, descriptive statistics, one-way ANOVA, and multiple-regression were used. For the case study, interview with the person who works in the each kind of company was used. The results of this study were as follows: Firstly, the level of localization strategy is found in order price, place, promotion and product. Secondly among the brand characteristics, type of brand, proportion of garments, price zone, launching time, number of shop are related with localization strategy, but turnover and number of the staff are not. Thirdly, license brand has the characteristics like as national brands and the differences between the branch and the agent is confidence and communication that are the basic elements of localization. This study can help national brands to refer the localization strategy and provide the understanding of localization strategy of imported brands in Korean fashion market.

• 전기학회논문지
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• 제59권2호
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• pp.291-297
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• 2010

A system called demand response programs (DRP) is being introduced among various countries owing to the lack of new generation capacity and the higher fuel generation cost. It is a program which provides for the end-users to select their consumption of electricity by recognizing the value of their consumption in real time. That is, Demand Response can be defined as the changes in electric usage by end-use customers from their normal consumption patterns in response to changes in the price of electricity or other signals. It is expected that the effects of DRP are preventing price spike, improving supply reliability and social welfare and increasing option of customers. Considering the customer's thermal comfort zone, this paper determines the most profitable combination of optimal incentives and amounts of load reduction for a retailer to maximize profits according to predicted outdoor temperatures while implementing DRP.