• 한국주거학회논문집
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• 제16권1호
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• pp.55-63
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• 2005

The purpose of this study is to find a way of solving on parking problems at apartment complex through the trend analysis research of the parking demands according to the housing unit size. The subjects of this study are high-rise apartment complexes in Daegu city which are constructed within 10 years. The parking demand according to the housing unit size at apartment complexes had been surveyed every July for 4 years from 2000 to 2003. Specially, we knew that the parking demand of $85 m^2$ below sized housing unit at apartment complex was exceeded architectural regulation of parking supply, and the parking demand of $85 m^2$ over sized housing unit at apartment complex was kept within architectural regulation of parking supply. And, the estimating formula that can predict the future parking demand by the trend analysis according to the housing unit size at apartment complexes in Daegu city was gotten through this study. But, in order to get more accurate estimating formula, it should be based on data of funker research and investigation about apartment complexes and it should be studied continuously.

• 한국수소및신에너지학회논문집
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• 제26권1호
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• pp.15-20
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• 2015

During the liquefaction of hydrogen, the ortho hydrogen is converted into the para form with heat release that evaporates the liquefied hydrogen into the gaseous one backwards. The ortho-para conversion catalysts are usually used during liquefaction to avoid such boil-off. In order to compare and analyze the performance of the ortho-para hydrogen conversion catalysts, in-situ FT-IR device was designed and manufactured to measure the para hydrogen conversion rate in real-time. $LaFeO_3$ and $La_{0.7}Sr_{0.3}Cu_{0.3}Fe_{0.7}O_3$ perovskite catalysts were prepared by the citrate sol-gel method and their spin conversion characteristics from ortho to para hydrogen were investigated by in-situ FTIR spectroscopy at 17K. It was found that the spin conversion was affected by surface area, particle size, and crystallite size of the catalysts. Thus, the $La_{0.7}Sr_{0.3}Cu_{0.3}Fe_{0.7}O_3$ perovskite catalyst that had higher surface area, higher crystallite size, and smaller particle size than $LaFeO_3$ showed the better spin conversion property of 32.3% at 17K in 120min interaction with the perovskite catalysts.

• 대한화장품학회지
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• 제27권1호
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• pp.29-42
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• 2001

We had prepared MLV liposome with Hibiscus Esculentus Ext.(HEE) which have fluorescent light in order to evaluate its percutaneous absorption about hairless rat skin. Then we investigated particle size of MLV using confocal laser scanning microscope(CLSM) and transmission electron microscope(TEM), respectively. Stability of MLV liposome and penetration of MLV liposome to hairless rat skin was measured by CLSM. As a result of experiments, MLV was globular shape and the rage of particle size was 0.3-0.5$\mu\textrm{m}$ mostly. Cream-type MLV had high stability comparatively. When we treated with MLV to rat skin, skin penetration was enhanced, especially, the optimum concentration of MLV on penetration to rat skin was 10%. Optimum penetration time was 6hr-12hr. And MLV-type HEE was more effective on percutaneous absorption than HEE-cream or liposome-type HEE.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2003년도 정기총회 및 추계학술대회
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• pp.283-288
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• 2003

This study has analyzed the environmental characteristics of Cheong-Ju city and the priority of residential choice elements by residents. The results of analysis are as follows. 1) The rate of housing supply in Cheong-ju city is low at 80.2%, concentrated on small sized apartments. Furthermore educational and traffic facilities are much insufficient. 2) While residential choice in Chong-ju is heavily characterised by educational surroundings, it is less affected by both economy such as housing prices, the value of investments and accessibility to public transportations, distance to working places. 3) It is affected by residents' general characters like the sell age, life cycle, education level, properties, home ownership, number of room and type of house they want.

• The Journal of Asian Finance, Economics and Business
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• 제7권6호
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• pp.173-183
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• 2020

The paper investigates the determinants of foreign direct investment (FDI) in Vietnam in 2000-2019 period. This study uses difference Generalized Methods of Moments (GMM) and Pooled Mean Group (PMG) to analyse panel data officially provided by General Statistical Office of Vietnam. The results show that market size impacts positively significant on FDI attraction: 1% -1.45% (PMG) and 1% -1.25% (GMM). Besides, some other factors have positive influences as labor force, macroeconomic policy, macroeconomic stability and skilled labor. Meantime, the trade openness negatively affects FDI inflows in the short-term, while not being statistically significant in the long-term. Moreover, economic shocks often have a negative impact on FDI inflows. The findings of this study lead to the following recommendations. First, authorities should pay special attention to encourage economic growth rate in Vietnam to expand market size because this is the first priority of foreign investors. Second, authorities need to continue increasing the rate of skilled labor, especially highly qualified management force, engineers and well-skilled workers. Third, the authorities should adjust trade openness to boost the role of its determinant in attracting FDI inflows. Fourth, macroeconomic stability needs to be governed by international standards in order to secure the belief of foreign investors in the long-term.

• Asian Journal of Business Environment
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• 제1권1호
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• pp.9-12
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• 2011

This study aimed to predict retail sales of local markets in Jinan city of China with the Huff model. Using the Huff Model, we examined whether the predicted retail sales of local markets may be different in Jinan, China, from the department stores, supermarkets, shopping centers/shopping malls, and home appliance stores. The probability that a customer shops at location depends upon the store size and the travel time factors calculated by the Huff Model. We found that the predictedretail sales of shopping malls have a greater value than others. People who live in a mid-sized city may have easier access to any stores within the city boundary than people in metropolitan areas. Therefore, people in a mid-sized city are more sensitive to store size, because a bigger store size means greater opportunities, incentivizing consumers to travel further to competing stores after passing by nearer, smaller stores. This study has some limitations. First, the data is somewhat restricted in that the subject stores do not represent all of the stores in Jinan. Second, we cannot compare the estimated market share of the stores and the actual sales data. It is further suggested in this study that more databases be developed throughout such East Asian countries as Korea and Japan and that a different parameter λ value in the Huff Model be utilized for mid-sized cities.

• 대한토목학회논문집
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• 제31권5D호
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• pp.633-639
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• 2011

적정수준의 택시규모를 산정하기 위해 본 연구에서는 타코미터 데이터 분석을 통해 법인택시와 개인택시의 운행실태를 분석하였다. 대상예시지역으로 평택시를 선정하여, 도시특성을 기반으로한 택시총량산정 수리모형을 개발하였다. 개발된 도시특성기반 모형의 분석결과 결정계수(수정된 R제곱) 값이 0.970로 모형이 유의한 것으로 나타났다. 모형적용결과 평택시에 적합한 택시총량은 2014년까지 총1,794대로 이는 2009년 기준년도보다 214대 많은 것으로 분석되었다. 또한 실제 택시의 운영데이터를 기반으로한 실차율에 의한 택시총량산정 모형을 분석하였다. 실차율모형 적용결과 2014년까지 총1,224대로 이는 2009년 보다 356대 적은 것으로 분석이 되었다. 결론적으로 평택시의 택시총량은 실차율모형과 도시특성을 반영한 두 모델을 적용한 결과 2014까지 평택시의 택시총량공급계획은 2009년 1,580보다 71대 적은 1,509대로 분석되었다.

• 한국산학기술학회논문지
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• 제17권1호
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• pp.357-366
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• 2016

본 연구는 세종시 신설 초등학교의 학교규모와 배치계획의 개선점을 제시하기 위한 것으로 24개 학교를 대상으로 교지면적, 학교규모, 외부공간 구성비를 비교분석하였다. 연구결과 현재 초등학교 50학급 이상의 규모계획은 병설유치원 포함 48학급 이하로 조정이 필요하며, 학교규모 산정시 학생 수가 아닌 학급 수에 따른 기준을 적용해 교지면적 대비 적정 학급 수를 유지하는 노력이 필요하다. 교지 대비 교사면적은 평균 24.6%로 타 시도대비 높게 나타나고 체육장은 19.9%로 낮게 나타남으로 교사면적 비율을 20%대 초반으로 낮추어 체육장을 비롯한 외부공간의 구성비를 높여야 한다고 판단된다. 아울러 교지면적과 학교규모 산정시에 지구단위계획, 교지의 특수성으로 손실되는 면적을 고려하여 배치가능 면적과 외부공간으로 활용 가능한 면적을 구분하여 적용할 필요가 있다.

• 대한원격탐사학회지
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• 제6권2호
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• pp.89-113
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• 1990

The purpose of this study is to develop means to apply GIS and remote sensing technology to the analysis of Korean urban open spaces. To achieve this objective, a framework of analysis of urban open spaces was developed, and then the framework was applied for the evaluation of the potential and suitability of open spaces of Ansan City, which is a new town developed to accomodate industries relocation from Seoul, Korea, mainly due to their pollution problems. The software used in this study are IDRISI, a grid-based GIS, and KMIPS, a remote sensing analysis system. Both packages are based on IBM PC/AT computers with Microsoft DOS. Landsat MSS and TM data were used for the land use classification, land use change detection, and analysis of transformed vegetation indices. The size of the geographic data base is 110 rows and 150 columns with the spatial resolution of 100m$\times$100m. The framework of analysis includes both quanititative and qualitative analysis of open spaces. The quantitative analysis includes size and distribution of open spaces, urban develpment of open spaces, and the degree of vegree of vegetation removal of the study area. The qualitative analysis includes evaluative criteria for primary productivity of land, park use potential, major visual resources, and urban environmental control. The findings of this study can be summarized as follows. First, the size of builtup areas increased 18.73km$^2$, while the size of forest land decreased 10.86km$^2$ during last ten years. Agricultural lands maintained its size, but shifted toward outside of the city into forest. Second, the potential of open spaces for park use is limited mainly due to their lack of accessibility and connectivity among open spaces, in spite of ample acreage and good site conditions. Third, major landscape elements and historic sites should be connected to the open space system of the city by new accesses and buffers.

• The Journal of Asian Finance, Economics and Business
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• 제7권4호
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• pp.145-154
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• 2020

The paper aims to investigate the interactions between rule of law, economic growth and the shadow economy in 18 selected transition economies. This study uses annual data over the period 2002-2015 for 18 transition countries to estimate the effects of rule of law and other factors on the size of shadow economy. The transition country group is classified based on International Monetary Fund resources and is selected on the basis of the availability of data. The data examined in this research are derived from the World Bank, Worldwide Governance Indicators project and Working Paper from International Monetary Fund. This study employs GMM method. The results show that the economic growth indicators have negative and statistically significant impact on the shadow economy. Additionally, these results also reveal that in transition countries the size of shadow economy is negatively related to the quality of rule of law. However, the findings of this research also point out that there are positive relationships between inflation, public expenditure and the size of shadow economy. Hence the results from this study suggest that the size of shadow economy could be controlled by improving the effectiveness of rule of law and the growth of economy particularly in transition countries.