• 천문학회지
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• 제36권spc1호
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• pp.7-12
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• 2003

We have studied the magnetic helicity of active regions by using the data from (1) the photo-electric magnetograph of the Okayama Observatory (1983-1995) and (2) the video magnetograph of NAOJ/Mitaka (1992-2000). The latitude distribution of helicity showed a tendency that the regions in the north (south) hemisphere have negative (positive) helicities, respectively, which is already known as the hemispheric sign rule. If we look into the sign of helicity as a function of time, the sign rule was less definite or was reversed sometimes in the sunspot minimum phase. We also studied the relation between the magnetic helicity and the sunspot tilt angles, and found that these two quantities are positively correlated, which is opposite to the expectation of a theoretical model. The implications of this cycle-phase dependence of helicity signs and the correlation between magnetic he Ii city and sunspot tilt angles are discussed.

• 한국정보시스템학회지:정보시스템연구
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• 제7권1호
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• pp.129-158
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• 1998

By investigating various information promotion plans by Taegu Metropolitan City Government, Kyungbuk Provincial Government or by the ministry of Agricultural, Forestry, and Fishery Affairs, this paper intends to analyze current trends of information approached from wider perspective, and to propose multi-layered alternatives which improve informatization promulgation in rural areas of Taegu, Kyungbuk areas. This research proposes following 6 alternatives, as informatization strategies to develop rural economics ; (1) construction of Agricultural Techno Park to advance and develop informatization in rural areas, (2) construction of communication super highway to strengthen information infrastructure, (3) construction of region-specific information system to provide agricultural information unique to its region or areas, (4) provision of agriculture-related information by establishing regional information centers separated by regions like North, South, Eastern regions etc., (5) establishment information, (6) establishment of information gallery of village to provide information needed. And this research also investigates specific contents progresses of various plans by various actors.

• 한국지리정보학회지
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• 제11권3호
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• pp.174-182
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• 2008

도심공동화를 조사 분석하여 그에 적합한 도심재생방안을 부산시의 특성을 고려하여 제시할 것이다. 도심의 기능별 지역을 알기위해서 부산시의 도심(축)에 속하는 15개 동과 부도심에 속하는 12개동을 대상으로 도심의 공간적 특성과 도심공동화현상을 파악하고자 하였다. 이들 지역에 22개의 변수를 선택하여 요인분석을 사용하였다. 그 분석의 결과는 다음과 같다. 주요요인은 4개 나타났으며, 누적 설명력은 80.4%로 높게 나타났다. 이들 요인은 주거적 요인, 상업적 요인, 관리적 요인, 도심의 발전(쇠퇴) 요인을 설명하는 성분으로 나타났다. 도심(축)에 속하는 지역에서 주거적 기능의 공동화가 보이며, 부도심에서는 상업적 기능과 관리적 기능의 공동화가 나타나고 있다. 그리고 전체적인 기능별 도심공동화현상이 나타나고 있으므로 종합적인 도심재생방안의 모색이 시급하다고 할 수 있겠다. 그리고 도심의 지역별 특성이 다르게 나타나고 있으므로 지역별 특성에 부합되는 도심재생방안이 수립되어야 하겠다.

• 대한지리학회지
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• 제38권4호
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• pp.591-609
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• 2003

본 연구는 중국 철도망의 구조와 철도여객 및 화물 유동에 대한 분석을 통하여 중국 도시 네트워크의 특징과 변화를 밝히는 것을 주요 목적으로 하였다. 중국 도시의 접근성은 허난성을 중심으로 한 중부지역이 가장 높고 주변으로 향할수록 접근성이 떨어진다. 도시 네트워크의 중심은 중부지역에서 동부지역으로 이동하였으며, 3개의 남북방향 축과 주요 도시들의 지역 중심성은 여전하지만 그들의 영향권은 확대되고 중심성도 분산되었다. 도시 네트워크의 계층구조는 3단계로 구분할 수 있는데 1단계 계층에서 대부분의 영향권은 도시 성(자치구) 범위를 크게 벗어나지 않았고, 2단계 계층에서는 대부분의 지역에서 영향권 교차현상이 나타났으며 선형 패턴이 더욱 뚜렷하였다. 3단계에서는 5대 영향권으로 구분되었다.

• 디지털융복합연구
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• 제10권7호
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• pp.185-192
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• 2012

본 논문은 유비쿼터스 환경의 도시통합관제를 위한 실시간 데이터 처리 방안을 제시한다. 도시내 다양한 정보수집센서로부터 발생하는 데이터와 이벤트에 대해 분석하고 가공하여, 실시간으로 처리하는 것이 도시통합관제의 핵심이다. 본 논문은 다양하게 발생하는 이벤트 정보를 분석하고, 상황에 맞는 조치를 취하기 위한 판단모듈에 Rete 알고리즘을 이용한 추론엔진을 적용한다. 마지막으로, 본 논문에서 제안한 방법의 효율성을 평가하기 위해 시뮬레이터를 구성하여 성능을 테스트한다.

• 한국식품저장유통학회지
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• 제31권3호
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• pp.333-345
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• 2024

This study aims to provide an overview of the research on the chemical composition, nutritional value, biological activities, and potential applications of Camellia oleifera seeds. Camellia oleifera Abel. (Theaceae) is a type of woody plant found in various regions, including China, Japan, India, and Southeast Asia. This plant is highly valued for its cooking oil, as the oil extracted from its seeds contains many unsaturated fatty acids (90%), mainly oleic acid (80%), and various biologically active compounds. Oil derived from C. oleifera seeds has been shown to possess numerous health benefits, such as reducing low-density lipoproteins cholesterol levels, preventing cardiovascular diseases and cancer, and regulating blood pressure. Apart from its oil, the seeds of C. oleifera also contain remarkable biological compounds that offer additional health advantages. Despite these promising attributes, C. oleifera has yet to be widely recognized as a potential source of raw materials for pharmaceutical purposes. This lack of popularity and awareness has hindered further exploration of its pharmaceutical benefits and other uses. Through this article, we hope everyone can better understand this plant and have more practical applications in the future.

• Journal of Construction Engineering and Project Management
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• 제2권4호
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• pp.32-41
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• 2012

In recent times, multi-centralization and decentralization as well as large Capital area and suburbanization in the spatial structure of capital area. With rapid growth, urbanization and industrialization are unsystematic, and growth inequality between regions caused negative effects such as discordant centralization and decentralization, fluctuating land value, and gap between living conditions. Accordingly, this study analyzed urban spatial indexes by the self-governed body in the capital area such as Seoul, Incheon, and Gyeonggi province for the analysis of the regional inequality phenomenon. We examined the characteristics of temporal and spatial changes in urban spatial structure in the capital area by utilizing the distribution pattern and density of city indexes such as population, employment, etc, and then drew the commonality of those factors through factor analysis. We evaluated the drawn results through the city standard index by each city, conducted factor score analysis, and identified the interaction between each factor and Housing Purchase Price Composite Indices index, housing rent price index(Housing Jeonse Price Composite Indices), land price fluctuation rate, diffusion ratio of house, and financial independence.

• International Journal of Advanced Culture Technology
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• 제12권2호
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• pp.353-359
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• 2024

The color temperature and light color of nighttime lighting in a particular city is an important factor in determining its nighttime identity. To quantitatively analyze the nocturnal characteristics of Seoul, this study focuses on the light color of the lighting sources that used in the places included in the Seoul Night View 100 Photobook. As a result, the color temperature of white light in the surveyed places is in the range of 2,500~3,500K, of which 3,000~3,500K represents the highest proportion. In addition, the color temperature in the 2,500~3,500K range was found to be evenly distributed across the five surveyed regions. Apart from white light, blue color hue accounts for a high percentage in the monochromic light category, and the excitation purity was measured to be 71.6% on average. In addition, 46% of the buildings with monochromic light are in urban centers.

• 한국환경과학회지
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• 제18권7호
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• pp.767-780
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• 2009

This study investigates the standard, duration period and excess mortality of extreme heat using the standardized daily mortality data from 1991 to 2004, establishing a standard threshold Criteria for Heat Health Watch Warning System in Korea. It ultimately aims to provide the guidance in building up Heat Health Watch Warning System for Korea by suggesting the standard to quantify thermal stress from heat. The standard threshold Criteria for Heat Health Watch Warning System for Seoul metropolitan city takes into account both daily maximum temperature and daily maximum heat index(HI) and consists of four phases; caution, extreme caution, danger, and extreme danger. Extreme caution phase and danger phase are used as the advisory and warning of extreme heat, respectively. Since the nationwide distribution of the frequency of extreme heat day and the excess mortality rate shows little difference across regions, the standard threshold Criteria for Heat Health Watch Warning System for Seoul metropolitan city can be used for other regions.

• Asian Journal of Innovation and Policy
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• 제7권1호
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• pp.9-29
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• 2018

Japan's manufacturing is mostly dependent on the automotive industry in Toyota-Kariya cities. However, the nearby city of Hamamatsu is the home of a start-up ecosystem known as Japan's Silicon Valley. How is it possible to evaluate the innovative potential of each regional industry? What kind of guidelines exist for continuing R&D investment when companies' net incomes are negative in the face of the 'Valley-of-Death' or financial crisis? Is it possible to measure the regional resilience ability in the context of the financial crisis? Entrepreneurial innovation is defined as a real-option portfolio consisting of investment decision to commercialize R&D findings. The subcontractor system implies a vertical and tight industrial group. However, a start-up ecosystem means a platform for horizontal and flexible partnership. In this research, the data include the financial indices of each of 18 public companies in both regions between FY2009 and FY2017. The objective of this paper is to clarify the call option or resilience function of equity for R&D investment in the context of the financial crisis in both regions by using Bayesian MCMC analysis.