• Korea journal of population studies
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• 제34권1호
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• pp.99-127
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• 2011

This study examines whether educational differentials in health are greater in more recent cohorts in Korea. This study utilizes latent growth-curve modeling to examine intercohort trends in health for three educational subgroups, using panel data (2003-2007) based on a national probability sample of 9,639 adults. Among young and middle adults with less than a high school diploma, the 4-year newer cohort demonstrated better health at the same age, implying a favorable trend. Middle and older adults with college level and a high school diploma also enjoyed favorable trends in health. This study suggests the possibility that the education-based overall disparity in health is increasing, but there are variations in the trend depending on age group. The increasing disparity mainly occurred among older adults.

• Korea journal of population studies
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• 제33권3호
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• pp.75-99
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• 2010

This paper aims to examine the causes and features of current generational conflicts in Korea and to discuss their implications. The data utilized in the study include collective data on presidential and general elections and secondary data obtained from empirical research. The findings are as follows. First, generational power conflicts express itself by struggles among generations concerning the timing of political power transfer. An average age of assemblymen decreases consistently regardless of changes in overriding ideological atmosphere in general - conservative vs. liberal. Second, ideological conflicts among generations were highly intensified around 2002 presidential election, but gradually moderated since 2004 general election. The conflicts might be re-intensified if a set of conditions were satisfied. Third, cultural conflicts between older and younger generations were contrasted around three cultual axes: economic growth with top priority vs. consumerism, collectivism vs. individualism, and authoritarianism vs. post-authoritarianism. To ease strained relations between generations, intergenerational programs were suggested.

• Land and Housing Review
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• 제2권1호
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• pp.1-8
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• 2011

During the 1990's, five new towns were constructed around Seoul such as Bun-Dang and Il-San. These new towns are very popular since they were created based on systemic urban planning and they provide various residential amenities. Many people consider them livable cities. Taking such advantages, other small-scale new public and private developments continued around those new towns and consequently created 'agglomerated region with new development'. The most representative area is Bun-Dang and north-western Yong-In area which are formed along the Seoul-Busan expressway. This area is a mega-community having more than one million residents in 2005.Judging from recent development trends in the Seoul metropolitan area, it is expected that the formation of other 'agglomerated region with new development' would be continued for the time being. This study is aimed to analyze the residential environment of Bun-Dang and north-western Yong-In and find implications to the management of 'agglomerated region with new development'. The relevant existing studies have their limits, only focusing on analyzing current conditions and pointing out current problems. This study could be differentiated from the existing analyses in that it conducted comprehensive analyses on various factors that constitute urban residential environment. The conclusion of this study was derived from diverse analyses of current development condition, residential sites, regional transportation, awareness of residents, and oversee cases.

• Proceedings of the Plant Resources Society of Korea Conference
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• 한국자원식물학회 2018년도 춘계학술발표회
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• pp.79-79
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• 2018

현대사회에서 스트레스, 환경오염 등으로 인하여 중년남성의 전유물로 여겨져 왔던 탈모가 젊은 사람들에게서도 나타나며, 탈모로 고민하는 인구가 약 700만 명 이상으로 추산되고 계속해서 증가하는 추세이다. 우리나라 탈모관련 시장은 현재 약 4조원 규모이며 지속적인 성장세에 있으며, 주로 한약재등 천연추출물을 혼합하여 제품화하였다. 본 연구에서는 어성초, 금잔화 70% 에탄올 추출물을 이용하여 천연발모제 소재화를 목적으로 섬유아세포, 모유두세포, 지방전구세포에 대한 세포독성 및 지방전구세포 분화를 통한 발모 효능을 확인하여 약용작물을 이용한 향장품 소재화를 시도하고자 한다. 섬유아세포에 각 시료에 대한 세포 독성을 확인한 결과는 어성초 70% 에탄올 추출물을 50, 100, $500{\mu}g/mL$으로 처리하였을 때 107.3%, 109.6%, 128.2%로 세포 생존율이 증가하였다. 모유두세포에 대한 각 시료의 세포 독성은 나타나지 않았으며, 모발의 생육을 촉진하는 혈소판에서 유래하는 성장인자를 분비하여 모발 재생에 효과를 나타내는 지방전구 세포의 지방 분화 확인 결과 금잔화와 어성초 70% 에탄올 추출물을 $10{\mu}g/mL$의 농도로 처리하였을 때 각각 104.3%, 103.9%의 분화율을 나타내었고, 어성초 출물의 경우 처리 농도의 증가에 따라 지방분화율이 유의적으로 크게 증가하였다. 본 연구를 통해 육모용 모발제품 소재 개발을 위한 생약초 자원들의 in-vitro 육모활성관련 실험 결과 어성초와 금잔화는 각 세포에 대한 독성을 나타내지 않았으며, 어성초 70% 에탄올 추출물은 지방전구세포를 자극하여 지방 분화를 유도하는 것으로 확인되었다. 이상과 같은 결과로 어성초와 금잔화 70% 에탄올 추출물은 탈모관련 향장품 개발 소재로 높은 가능성을 가지고 있는 것으로 생각된다.

• Journal of the Korean Society for Railway
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• 제13권6호
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• pp.595-600
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• 2010

The Bimodal Tram being developed in Korea is a new transit system that provides both benefits of rail and bus systems in terms of accessibility and fixed time schedule. The Bimodal Tram is expected to take an important role of transit system in Korea under the national strategy of transportation system such as 'Low Carbon and Green Growth' for the next generation. This study does define the key indices considered for a decision of introducing the Bimodal Tram system and develop a finalized index, BSI(Bimodal Score for Introduction), showing the level of Bimodal Tram system introduced at a city level. The transport/transit system varies depending on cities with respect to demographic characteristics, travel patterns, financial capabilities, etc. This study will help any cities where transport agencies are trying to introduce the Bimodal Tram as a new transit system.

• Journal of the Korean Data and Information Science Society
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• 제21권6호
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• pp.1081-1090
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• 2010

Most nations including Korean government make a great endeavor to realize low-carbon and green-growth world. We also work hard to expand bicycle facilities and bicycle road in order to increase bicycle transportation rate. Nowadays number of cyclists is increasing but fortunately, bicycle accidents also increase rapidly. Most data of bicycle accidents published by National Police Agency annually are represented as frequencies in two dimensional contingency tables. In this work, risk rates and characteristics of bicycle accidents are analyzed by using concepts of the probability and conditional probability. Especially with numbers of estimated cyclists and registered cars, risk rates of various kinds of bicycle accidents are obtained. Under the assumption of the conditional independence, probability of bicycle accident occurred at realistic situations could be estimated. Furthermore we discuss to reduce bicycle accidents with these results obtained in this work.

• International Commerce and Information Review
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• 제14권2호
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• pp.173-199
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• 2012

The purpose of the study is to test and analyze differences in consumers' satisfaction and influences of competitiveness of goods on consumers' purchase decision by demographic characteristics and by channel distribution. The hypotheses have been tested through T-test and ANOVA with one-way and two-way using SPSS Win Ver. 12.0. The distribution channels are classfied with five ones such as company direct operation shop, agent licensed shop, department store, internet home shopping and outlet goods shop. This study can indirectly suggest a local clothing brand industry countermeasures for raising competitiveness and changing consumer preferences in the open domestic market.

• Nuclear industry
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• 제37권8호
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• pp.24-33
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• 2017

영화 '판도라'에 투입된 정도의 돈은 막대한 예산을 갖고 있는 국제 그린피스나 매년 전 세계 TV 광고에만 수천만 달러를 쏟아 붓는 천연가스 이익단체들의 예산에 비하면 조족지혈의 수준이다. 국제 그린피스의 연간 예산이 대략 4억 달러, EDF가 1억4천만 달러, 천연자원보호협회(NRDC)와 시에라클럽이 1억 달러가 넘고, 이들 단체가 예금이나 주식에 투자한 돈만 해도 수억 달러나 된다. 시에라클럽이나 NRDC, EDF는 블로그에 원자력을 화석연료로 대체하는 것에 반대하는 글을 올리면서 다른 한편으로는 뉴욕에 있는 Indian Point, 캘리포니아에 있는 Diablo Canyon, 그리고 오하이오에 있는 여러 원전들을 천연가스로 대체해야 한다고 주장하는 기만책을 쓰고 있다. 자연과의 조화를 위해서라도 신재생에너지를 사용해야 한다는 그들 주장의 베일 뒤에는 더 큰 어두운 그림자가 깔려 있다. 가난한 나라는 계속해서 가난하도록 해야 '과잉 인구'와 '과소비'를 막을 수 있다는 반인륜적인 멜더스(Malthusian) 이론과 그들이 주장하는 반핵의 오랜 역사는 서로 그 맥을 같이하고 있기 때문이다. 탈원전이 추진되면 전기요금도 올라가고 실업률도 증가한다는 사실, 그리고 환경 오염도 더 심해지고 그로 인해 조기 사망자 수도 증가한다는 사실을 보여주는 데 반드시 어려운 경제 모델이나 환경 모델이 필요한 것은 아니다. 원자력을 천연가스로 대체하면 그에 따른 비용 상승이 연간 최소 110억 달러나 된다. 물론 신재생에너지로 대체하게 되면 그 상승폭은 더욱 커지게 된다. 그리고 한 경제 분석 전문기관의 연구에 따르면 전기요금이 상승되면 한국의 경제는 저성장에서 벗어나지 못하게 된다. 결국 지금 우리에게 가장 필요한 것은 원자력 휴머니즘, 즉 원자력 에너지가 갖고 있는 훌륭한 도덕적인 목적을 다시 한 번 상기하면서, 우리 인류가 가지고 있는 가장 중요한 환경 기술을 반인륜적인 집단으로부터 구해내기 위한 풀뿌리 시민사회의 가열찬 노력이라고 할 수 있다. 우리와 같은 원자력 휴머니스트들에게는 그린피스나 기타 여러 반인륜적 집단들이 갖고 있는 풍부한 자원이 없다. 그러나 우리에게는 그런 종류의 자원이 필요한 것이 아니다. 우리에게는 그것보다 훨씬 더 중요한 진실이라는 자원이 있다는 사실을 결코 잊어서는 안될 것이다.

• Resources Recycling
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• 제14권2호
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• pp.43-55
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• 2005

As world population increases and the world economy expalds, so does the demand for natural resources especially strategic metals such as cobalt. An accurate assesment of the nation's minerals must include not only the resources available in the ground but also those that become available through recycling. In this paper, data on domestic and international supply of cobalt and its applications by end-user were analyzed for stable security of cobalt resources and effective recycling of cobalt scraps. Also, an initial evaluation of the flow of cobalt-containing materials in the United States was prepared. In 2003, 8,000 metric tons of cobalt were consumed in the United States and an estimated 28% of U.S. cobalt supply was derived from scrap. The superalloy industry and catalyst industries have well-established recycling or cobalt recovery practices. Recycling rates of cobalt scraps from magnet alloy and cemented carbide were relatively low.

• Journal of the Korean Geographical Society
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• 제28권4호
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• pp.356-378
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• 1993

This study examines the competitiveness of urban industrial structure and its changing characteristics. Cluster analysis of Arizona towns based on economic functions revealed the changing characteristics of urban functions over time. The relationship between the changes of urban functions and industrial competitiveness was confirmed through shift-share analysis. The level of industrial specialization has become more closely related to urban size in terms of both population and employment, but the relationship between metropolitan location and specialization level is not clear. Also, it is validated that the economies of Arizona towns have become more diversified and, consequently, have tended to converge toward the state average in industrial structure over time.