• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.22 no.4
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• pp.189-196
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• 2010

U-factor and solar heat gain coefficient(SHGC) usually can be used as the index to evaluate the thermal performance. U-factor is a concept for heat loss by the temperature difference between inside and outside, so it's useful to be applied in heating season. But SHGC that indicates the fraction of heat from incident solar radiation that flows through a window by means of optical transmission, as well as absorption, re-radiation and convection is for cooling season. In other words, U-factor and SHGC of windows by cities have to be reflected to select the window of the energy conservation. The purpose of this research is to analyze the energy use impacts by SHGCs of windows for detached house in Inchon and Ulsan through energy simulation by eQUEST.

• Transactions of the Korean Society of Automotive Engineers
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• v.8 no.4
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• pp.59-67
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• 2000

Recently the world is faced with the very serious problems related to the increasing use of the conventional petroleum fuels. THe air pollutions in big cities were also occurred by the exhaust emissions from automobiles. many researchers have been attracted various oxygenated fuels as an alternative fuel and a renewable fuel for the measure of these problems. In this study the effect of oxygen in fuel on the exhaust gas emissions has been investigated with oxygenated fuels as an alternative fuel for diesel engine. The exhaust gas emission were investigated by comparing with that of the diesel fuel. The vegetable fuel oil such as soybean oil gives lower smoke level than that with diesel fuel. Furthermore the smoke emission is more affected by the oxygen content in fuel than by the fuel viscosity. This study concluded that the fuels including oxygen might be a good measure to reduce smoke in diesel engine because the oxygen strongly influenced the combustion process.

• Journal of Korean Society of Transportation
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• v.11 no.1
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• pp.5-22
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• 1993

This study examines the 1980 Census and the 1987 Travel Survey data sets, in order to identify commuting trends in the Seoul Metropolitan Area. The commuting field of Seoul includes the cities and counties contiguous to Seoul, as well as Inchon, Suwon and Ansan City and Paju County. The study finds little support for the expansion of the commuting field toward distant counties of Kyonggi Province; instead an intensification of commuting within the field is more salient. The most prominent trend, within the city limit of Seoul, is that journey-to-work toward the city center has decreased whereas peripheral journeys increased considerably. The work trips have increased most in the southwestern sector of the city; a moderate increase in the northeastern and southwestern sectors; and decreases in the center and the northwestern sector of the city. Factorial analyses of the work trip data also reveal the emergence of sub-regions of journey-to-work in the peripheries of the city. Such a spatial pattern of commuting changes resemble that of population changes, and correspond in part to the layout of the subway system.

• Journal of Environmental Science International
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• v.9 no.6
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• pp.469-474
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• 2000

The traffic accidents in large cities such as Pusan metropolitan city have been increased every year due to increasing of vehicles numbers as well as the gravitation of the population. In addition to the carelessness of drivers, many meteorological factors have a great influence on the traffic accidents. Especially, the number of traffic accidents is governed by precipitation, visibility, cloud amounts temperature, etc. In this study, we have analyzed various data of meteorological factors from 1992 to 1997 and determined the standardized values for contributing to each traffic accident. Using the relationship between meteorological factors(visibility, precipitation, relative humidity and cloud amounts) and the total automobile mishaps, and experimental prediction formula for their traffic accident rates was seasonally obtained at Pusan city in 1997. Therefore, these prediction formulas at each meteorological factor may by used to predict the seasonal traffic accident numbers and contributed to estimate the variation of its value according to the weather condition it Pusan city.

• Journal of Korea Port Economic Association
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• v.20 no.2
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• pp.101-130
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• 2004

Such Hinterland in New Busan-Jinhae Port are so placed as to do harm to their surrounding residential areas due to traffic, noise and dirt, etc. according to the current plan. So they are likely to fail to serve as harbors and residential districts. Because this is responsible for a conflict between harbors and urban functions, plans for the use of such areas should be well planned enough to achieve win-win results by getting rid of a conflict between the harbors and urban functions by creating manufactural and industrial complexes and green parks close to harbor logistics, by consolidating the functions of the cities through exchanges, commercial business and educational facilities and by adding comfort facilities at the hinterland of Ungdong and Myeongji.

• Tunnel and Underground Space
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• v.2 no.1
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• pp.1-10
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• 1992

As our global population grows each day, it is apparent that we must find new ways to provide space for habitation and the services necessary to support large urban areas. It is no longer advisable nor acceptable to continue to expand our cities on the surface, encroaching on valuable agricultural land and open space. We must also find ways to be more energy efficient in every aspect of our societies. Effective use of underground space can provide the space necessary to accommodate larger populations and the services necessary for their support in existing urban areas we can also find new ways to utilize underground facilities to improve urban efficiency and function. Underground technology has improved dramatically in the last two decades and continues to evolve to meet a great variety of applications. The confluence of available technology, economic feasibility, and greater acceptance of underground solutions with recognition of the need to change the ways we build and use out urban areas and their surrounding environment indicates that we are witnessing only the beginning of appropriate and innovative use of underground space future generations will indeed 'Think deep'.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.05b
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• pp.59-61
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• 2003

1952년 런던 스모그 사건을 시작으로 대기오염이 인체 건강영향에 미치는 연구가 꾸준히 진행되면서 고농도의 대기오염에서뿐만 아니라 대기오염 기준치 이하의 농도에서도 사망자 수의 증가(Schwartz과 Dockery, 1992; Lee 등, 1999), 호흡기 및 심혈관계 질환 환자의 증가(Schwartz, 1994)등을 초래한다는 연구들이 최근 수 년간 일관성 있게 보고되고 있다(Stieb 등, 2002). 따라서 본 연구에서는 1998년 1월부터 2001년 12월까지의 7개 대도시(서울, 부산, 대구, 광주, 대전, 인천, 울산)의 일일사망자료와 환경측정 자료 및 기상자료를 이용하여 시계열 분석방법으로 대기오염물질이 일별 사망에 미치는 영향을 추정하고자 하였다. (중략)

• Journal of the Korean Society of Food Science and Nutrition
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• v.10 no.1
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• pp.123-135
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• 1981

The purpose of this paper is investigation on the consumption and the nutrition of marketing fermented milk in Korea. The objectives were selected randomly from 3 cities in Jeonbug province, Jeonju, Iri, and Gunsan, and they were grouped into students, housewives, patients, and officers from July to September 1980. (male: 591, Female; 673, total: 1,264). Findings in detail are summarized in Table 1.15. Among the many kinds of marketing fermented milk in Korea, products from the five manufacturers, whose numbers of Lactic acid acid bacteria were standarized, were sampled and divided into groups, A,B,C,D,E. The constituents of nutrition of them were analyzed by HPLC and AAS.

• The Korean Journal of Applied Statistics
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• v.4 no.2
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• pp.137-148
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• 1991

This paper describes the design of sample of the survey on the trend of house prices in city areas. The purpose of this research is to increase the precision of house price index in 39 cities and to provide with an accurate house price indes. The sample is selected in the stratified two stage sampling. In chapter 2, review and discussions are given on the sample design now in use. In chapter 3, we describe the sample size and the stratification, the house price index and error, and the substitution of sample. Finally we consider on problems of the sample design and some alternatives to solve them.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.18 no.4
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• pp.452-462
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• 2011

Purpose: The purpose of this study was to examine the factors affecting body image among undergraduate students. Method: The research design for this study was a descriptive survey design using a convenience sampling. Data collection was done using self-report questionnaires with 319 undergraduate students located in 3 cities, Seoul, Gangneung and Seosan. Pearson correlation coefficients and hierarchical multiple regression with the SPSS Win 12.0 Program were used to analyze the data. Results: In the hierarchical multiple regression analysis, gender, height, weight and college major were controlled. Body surveillance and body shame significantly predicted 72.3% of appearance orientation. Sociocultural attitudes toward appearance and self-esteem significantly predicted 33.5% of appearance evaluation. Self-esteem and body surveillance significantly predicted 15.9% of health orientation. Self-esteem significantly predicted 23.3% of health evaluation. Conclusion: Findings from this study provide a comprehensive understanding of body image and related factors in undergraduate students in Korea. However, further study with a larger random sample and more a detailed research design is necessary.