• Tribology and Lubricants
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• 제37권6호
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• pp.232-239
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• 2021

Petroleum is the most consumed energy source in Korea with a usage rate of 38.7% among the available primary energy sources. The price of liquid petroleum products in Korea includes taxes such as transportation·environment·energy tax. Thus, illegal production and distribution of liquid petroleum is widespread because of its huge price difference from that of the normal product and its tax-free nature. Generally, the illegal petroleum product is produced by mixing liquid petroleum with other similar petroleum alternatives. The two kinds of gasoline, common gasoline and premium gasoline, are being distributed in Korea. The premium gasoline is often adulterated with cheaper common gasoline that lowers the octane number of gasoline. It is possible to distinguish them with their color difference, green and yellow for different grade gasoline. However, when small volume of common gasoline is added to premium gasoline, it is difficult to determine whether premium gasoline contained common grade or not. In this study, we inspect gasoline, which is illegally produced by mixing common gasoline to premium gasoline. When the ratio of mixing common gasoline is increased, premium gasoline shows decreasing absorbance at 600 nm and 650 nm under UV-Vis spectrometer. Moreover, the detected intensity (mV·s) of green dye in high performance liquid chromatography (HPLC) was decreased by common gasoline under 0.99 correlation value. The more the common gasoline is mixed, the more olefin and naphthene are detected by gas chromatography. In addition, trimethyl pentane as octane improver, paraffin and toluene are decreased by common gasoline mixing. The findings of this study suggests that illegal petroleum can be identified by analysis of components and simulated samples.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2009년도 공동학술대회
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• pp.397-401
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• 2009

세계적인 경제위기 시기를 맞아 최근 정부는 경제위기 극복은 물론 저탄소 녹색성장을 통하여 경제의 성장동력을 찾고자 노력하고 있다. 그리고 2008년 초에 불어닥친 초고유가 사태는 해양교통시설업무를 추진함에 있어 관련 운영시설의 비효율적인 에너지 낭비 요소를 적극 발굴하고 친환경적인 대체에너지 체계를 적극 도입하는 계기가 되었다. 이에 따라 예산절감 등 정부의 '초 고유가 대응 에너지절약대책'에 부응하기 위하여 추진되었던 태양광발전시스템 확충 등의 자체 개선사례 분석을 통하여 해양교통시설의 친환경 에너지시스템 적용가능성에 관하여 논하고자 한다.

• 한국경제지리학회지
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• 제16권1호
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• pp.71-85
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• 2013

본 연구는 개별 상업용 건물들을 중심으로 주변지역에 위치한 상업용 건물들과 주거지 개발패턴이 해당 건물가격에 미치는 영향을 고찰함으로써 물리적 도시공간구조가 부동산시장, 특히 상업용 부동산시장에 미치는 영향을 분석하고자 한다. 이를 위해 GIS 소프트웨어를 이용하여 용도간 근접성을 체크하였다. 연구 결과, 용도혼합이 오프스 건물가격에 긍정적인 영향을 미치는 것으로 나타나, 뉴 어버니즘에서 강조하는 복합용도개발을 통해 지속가능한 커뮤니티를 만들 수 있다는 가능성을 확인하였다. GIS기술을 이용하여 기존 연구들이 경제사회변수와 같은 대리변수를 사용했던 한계를 극복하고, 공간구조를 보다 정밀하게 측정할 수 있었다. 또한 토지이용에 따른 2차원분석이 아니라, 각 건물의 높이를 계산하여 3차원 분석을 함으로써 공간의 이용과 함께 밀도까지 고려한 방법론을 사용한 의의가 있다.

• 한국건설관리학회논문집
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• 제11권5호
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• pp.41-52
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• 2010

리츠는 주식시장에 상장되어 있으면서 부동산 개발을 위한 자금조달의 성격과 부동산에 투자하는 특징도 있으므로, 주식 시장과 건설 및 부동산시장과 관계가 있을 것으로 예상할 수 있다. 본 연구에서는 리츠와 주식시장, 건설 및 부동산 경기와 관계된 지표들을 시계열 분석하여, 리츠와의 영향관계를 분석하였다. 시계열 분석은 백터자기회귀모형과 백터오차수정모형을 사용하였으며, 다음의 세 부분으로 분류하여 분석하였다. 첫째, 리츠와 건설 코스피 지수와의 관계를 분석한 결과, 건설 코스피 지수가 리츠에 영향을 주는 것으로 분석되었다. 둘째, 리츠와 건설경기 동행지수인 건축착공면적, 부동산 경기 지수인 오피스 임대지수와 주택매매가격지수와의 관계를 분석하였다. 각 지표들은 서로 인과관계는 없는 것으로 분석되었지만, 리츠와 주택매매가격지수는 서로에게 영향을 주는 것으로 분석되었다. 셋째, 리츠와 건설경기 선행지수인 건축허가면적의 관계를 분석하였다. 두 지표는 서로 인과관계가 없는 것으로 분석되었지만, 건축허가면적이 리츠에 영향을 미치는 것으로 분석되었다. 본 연구를 통해 리츠는 주식시장과 주택경기, 건설경기 선행지표인 건축허가 면적에 영향을 받지만, 건설경기 동행지표인 건축착공면적과 오피스 임대지수에는 상대적으로 영향을 작게 받는 것으로 분석되었다.

• 설비공학논문집
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• 제26권10호
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• pp.486-490
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• 2014

In our country, which imports 97% of the energy consumed, an energy saving policy is required. The price inflation of utility bills is caused by a steep rise in the prices of imported oil. This study aims to solve the difficulties that cause poor environmental conditions for workers in the energy services sector, and especially, to systematize energy consumption reports to manage energy goals by suggesting an example of written energy-saving reports. To this end, this research focuses on energy consumption of target facilities including office spaces in a main building and multi-use facilities of an office building. A system where all employees can participate is structured through the analysis of energy usage in the target buildings.

• 국제초고층학회논문집
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• 제5권2호
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• pp.137-144
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• 2016

This paper discusses the economics of skyscraper construction in Manhattan since 1990. First the paper reviews the economic theory of skyscraper height. Next it documents the frequency and heights of skyscraper construction in the last 25 years. Then the paper reviews the relative movements of office rents, condominium prices, and construction costs. Statistical results suggest that the resurgence of Manhattan's skyscraper construction is being driving by the rise in the average price of apartments, and is not being driven by rising office rents or falling construction costs. Statistical evidence shows that the height premium has not been rising over the last decade. Developers have been purchasing air rights (and bidding up the prices) in order to satisfy the demand for supertall buildings. In the next five to ten years, Manhattan is likely to see over thirty 200-meter or taller buildings, as compared to only four since 2010.

• 한국의류학회지
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• 제19권3호
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• pp.434-447
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• 1995

This research was intended to identify variables influencing on risk perception and risk reduction behavior in clothing purchase situations. Responses from 631 female adults living in Seoul area were collected and analyzed. Towner for social occasions or working in office was used as clothing stimulus. The analysis included three product variables(price, style, type of clothing), 4 personality variables(generalized self-confidence, specific self-confidence, generalized informativeness, fashion informativeness), 2 clothing attitude variables(clothing importance, clothing interest), 4 demographic variables(age, educational level, occupation, income), and 3 situational variables(purchase planning, time pressure, effects of shopping company). Multiple regression revealed the fact that each type of clothing risk and each type of risk reduction behavior was influenced by the set of different variables. Generalized self- confidence and age and time pressure had more effects on clothing risk perception, while clothing risk reduction behavior was more influenced by clothing risk type, clothing interest, price of clothing and fashion informativeness. Implications for marketing strategies planning were also provided.

• Journal of Forest and Environmental Science
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• 제24권3호
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• pp.171-174
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• 2008

The increasing price of liquefied petroleum gas (LPG) has forced many households to shift to firewood/charcoal in the Philippines, causing tremendous pressure on the dwindling forest. This transition is more obvious in the rural area where firewood price is almost half of that in the cities. Both problems on big demand for firewood and the pressure on our forest can be partly solved by going into firewood plantation. After all, the country has vast track of idle lands, both private and government lands, waiting to be developed. What the government can do are: a) aggressive promotion of firewood plantation, b) simplify further the old technology on establishing firewood plantation to encourage more farmers, c) improve charcoal processing and d) promote the use of efficient stoves. This write up discusses the need for firewood plantation, areas available for planting, where to plant in farms, what species to plant in a particular soil type/location for optimum growth, planting methods, harvesting, marketing, and the side lights on the ecological benefits derived from plantation aside from wood.

• 국제초고층학회논문집
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• 제5권2호
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• pp.145-154
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• 2016

When the tall office building first appeared in the street of Chicago in the end of Nineteenth Century, this building type has become a commodity in the development of real estate and been defined as a machine that makes the land pay. With the investigation of land price samples of the high-rise commercial buildings and the overall land price development in the central district of International Settlement in Shanghai, this paper tries to examine the site selection and construction of high-rise commercial buildings have important positive effect on the land value development.

• Asia Marketing Journal
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• 제19권4호
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• pp.87-114
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• 2018

The objective of this study is to find the effects of consumer values on eco-friendly buying behavior. This study examines environmental attitudes and involvement as moderating variables to explain eco-friendly buying behavior of consumers. Hypotheses were developed based on Focus Group Interviews, Depth Interviews, and literature reviews. To test such hypotheses, questionnaires were distributed and collected among female adults aged 18 or above, and who are either office workers or housewives. The analysis results show that personal values, sociocultural values, and values related to ecofriendly products affect consumers in their eco-friendly buying behavior. Among those values, concern about safety and health, eco-friendly culture and trend, willingness to pay price premiums and functional effects of eco-friendly products have significant effects on eco-friendly buying behavior. Reflecting these results, business marketers must appeal to consumers with more focus on safety and health, perceived consumer effectiveness, self-monitoring, eco-friendly culture and trend, media exposure, willingness to pay price premiums, design excellence and functional effects, to implement marketing communication strategies accordingly.