• 농업과학연구
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• 제27권2호
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• pp.182-189
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• 2000

The issue of food security will become one of the most widely concerned area of public policy in North East Asia coming 21st century. Although those countries such as China, Japan, South and North Koreas and Mongolia places emphasis on the need to have stable and reliable capacity for food production, it will be highly possible for these regions to experience the shortage of food supply due to growing population, expanding urbanization and rapid industrialization within next decade. Since world food markets are characterized as unstable structure and dominated by large multinational firms, their reliances on importing staple food may create the aggravation of food shortage problem in emergency situations. One possible proposal for solving food security in north-east region might be movements toward multilateral food supply assurance agreements as a component of trade negotiations among these countries. As measures for cooperation for securing food supply in these regions, following principles would be suggested; 1) encouraging agricultural cooperation based on private business, 2) exchange of technical and human resources rather than material support, 3) developing mutual concern and benefits, 4) managing joint buffer stock for staple food.

• 한국항해학회지
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• 제3권1호
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• pp.29-46
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• 1979

The climate of a given region is determined by the combination of the various climatic elements. But among them, the temperature is the most important element to classify the climatic type. The author attempted to classify the climatic types in Korea by making a analysis of the characteristics of temperature distribution. To accomplish the study, the author analyzed the daily and yearly range of temperature, the warmest and coldest months, continentality and oceanicity, thermal anomaly, and relative temperature, etc. The data of 153 weather stations are used for the analysis of the above five criteria. As a result of the study, the climate of Korea can be divided into three types, namely, the continental, coastal and intermediate(or transitional) type. The Pronounced continental type is appeared in the northern part of highland area. And the coastal type is limited to the east and south coast areas, and the southern part of the west coast area. The continentality is larger, and the oceanicity smaller, than those of Siberia, Mongolia and the inland area of China where the continental climate is most remarkable in the world. The reason why the west coast area is more continental than the east coast area may be due to the terrain effect and the warm current going north along the east coastline.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.46-51
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• 2011

High-rise buildings are widely being constructed in the Middle-East, South-East, and East Asia. These buildings are usually willing to stand for the landmark of the region and, therefore, exhibit some extraordinary features such as super-tall height, elevation set-backs, overhangs, or free-form exterior surface, all of which makes the construction difficult, complex, and even unsafe at some construction stages. In addition to the elaborately planned construction sequence, prediction and monitoring of building's movement during construction and after completion are required for precise and safe construction. This is often called the Building Movement Control during construction. This study describes Building Movement Control of the KLCC Tower, a 58-story office building currently being built right next to the famous PETRONAS Twin Towers. The main items of the Building Movement Control for the KLCC Tower are axial shortening and verticality. Preliminary prediction of these items are already carried out by the structural design team but more accurate prediction based on construction stage analysis and combined with time-dependent material testing, field monitoring, and site survey is done by the main contractor. As of September 2010, the Tower is under construction at level 30, where the plan abruptly changes from rectangle to triangle. Findings and troubleshooting until the current construction stage are explained in detail and implementations are suggested for future applications.

• Asian Pacific Journal of Cancer Prevention
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• 제14권11호
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• pp.6965-6969
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• 2013

Background: Tobacco consumption has been identified as the single biggest cause of inequality in morbidity and mortality. Understanding pattern of socioeconomic equalities in tobacco consumption in India will help in designing targeted public health control measures. Materials and Methods: Nationally representative data from the India Global Adult Tobacco Survey (GATS) conducted in 2009-2010 was analyzed. The survey provided information on 69,030 respondents aged 15 years and above. Data were analyzed according to regions for estimating prevalence of current tobacco consumption (both smoking and smokeless) across wealth quintiles. Multiple logistic regression analysis predicted the impact of socioeconomic determinants on both forms of current tobacco consumption adjusting for other socio-demographic variables. Results: Trends of smoking and smokeless tobacco consumption across wealth quintiles were significant in different regions of India. Higher prevalence of smoking and smokeless tobacco consumption was observed in the medium wealth quintiles. Risk of tobacco consumption among the poorest compared to the richest quintile was 1.6 times higher for smoking and 3.1 times higher for smokeless forms. Declining odds ratios of both forms of tobacco consumption with rising education were visible across regions. Poverty was a strong predictor in north and south Indian region for smoking and in all regions for smokeless tobacco use. Conclusions: Poverty and poor education are strong risk factors for both forms of tobacco consumption in India. Public health policies, therefore, need to be targeted towards the poor and uneducated.

• 한국기후변화학회지
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• 제1권2호
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• pp.133-145
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• 2010

이 연구에서는 2009년 북서태평양 태풍활동의 특성과 이에 영향을 끼친 대기 순환장을 분석하였다. 2009년에 북서태평양에서는 평년(1979~2009 평균값: 25.8개)보다 적은 22개의 태풍이 발생했는데, 7~10월에 집중적으로 발생하였다. 태풍의 발생은 필리핀 북쪽 해역과 북서태평양 동쪽 지역에서 많았고, 발생한 태풍은 대기순환 흐름에 의해서 대부분 남중국해와 일본 동쪽으로 향했다. 상대적으로 동중국해와 우리나라로 접근하는 태풍은 적었다. 대기대순환 관점에서 보았을 때, 2009년 태풍활동은 엘니뇨 현상과 서태평양 지역의 평년보다 활발한 대류활동에 의해 유도된 대기순환에 의해 영향을 받았다. 잘 알려진 바와 같이, 엘니뇨 시기에는 열대 해수면 온도의 동서 경도에 의해 서태평양 적도 지역에서는 강한 서풍 아노말리가 유도되는데, 2009년에도 이들의 영향으로 북서태평양 몬순 기압골이 동쪽으로 크게 확장되었고, 태풍의 발생 위치도 평년보다 동쪽으로 치우쳤다. 또한, 서태평양 지역의 강한 대류활동으로부터 유도된 로스비파가 남중국해로부터 중위도로 전파되면서 남중국 지역에서는 지향류의 동풍 아노말리, 동중국해 및 한국 근처에서는 북서풍 아노말리, 일본 동쪽에서는 남서풍 아노말리가 연이어 나타났다. 이로 인해 태풍의 진로가 동중국해 및 한국으로 진행하지 못하고 남중국해와 일본 동쪽 해상으로 유도되었다. 결과적으로 우리나라는 최근 21년 만에 직접적으로 영향을 준 태풍이 없는 무태풍년으로 기록되었다. 2009년의 예와 같이 평년과 크게 다른 태풍의 활동과 관련 대규모 순환장 패턴을 분석하는 연구를 통해 앞으로 기후변화에 따른 동아시아에서 지역별 태풍 영향에 대한 예측성 향상에 도움을 줄 것으로 기대한다.

• 천문학회지
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• 제27권1호
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• pp.1-11
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• 1994

We have observed the emission of $HC_3N$ J=4-3, 5-4,10-9 and 12-11 transitions toward the Sgr B2 central region in an area of $150'\times150'$ with resolutions of 16'-48'. The intensities and central velocities of line profiles show significant variations with positions. In contrast to the intensities of the low J-level transitions which gradually increase from the central source toward the outside region, the $HC_3N$ emission of the high J-level transition become stronger toward 'the central radio continuum source MD5. Systematic change in the radial velocity of each line profile occurs along north-south direction. There are a few peaks in most line profiles, and these indicate that there are multiple velocity components along the line of sight. Distributions of excitation temperature and column density which were estimated from the excitation calculations show the existence of a small $(1\times2pc),\;hot\;(T_{ex}>50K)$ core which contains two temperature peaks at-15' east and north of MD5. The column density of $HC_3N\;is\;(1-3)\times10^{14}cm^{-2}$ Column density at distant position from MD5 is larger than that in the central region. We have deduced that this 'hot-core' has a mass of 105M 0, which is about an order of magnitude larger than those obtained by previous studies.

• 한국항공운항학회지
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• 제23권4호
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• pp.12-21
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• 2015

Due to the influence of Han-la Mountain which is located at the center of Jeju Island, a radar blind sector has been appearing in the south-east, low-altitude area of Jeju Island. Thus, the region is perilous for aircraft using surveillance in this area with the existing radar equipment that is currently available. In addition, as the popularity for domestic leisure aviation is on the rise, the safety in low-altitude area should be guaranteed. Where not only IFR flights but also VFR flights are mainly used. Therefore, immediate measures to the present state of radar blind sector in Jeju Island should be taken into serious account. Regarding the circumstances, this study's purpose is to help secure the aviation safety in Jeju region by analyzing the current air traffic surveillance system in Jeju Island and comprehending its vulnerable factors. Moreover, this study compares secondary radar surveillance system, ADS-B and MLAT(Multilateration) system with factors based on the guidance materials from ICAO Asia and Pacific region office to suggests an adequate surveillance technology considering the regional characteristics of Jeju.

• 헤리티지:역사와 과학
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• 제52권1호
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• pp.242-257
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• 2019

비무장지대(Demilitarized Zone : DMZ)는 군사분계선(Military Demarcation Line : MDL)을 경계로 남북으로 각각 2km씩을 비무장지대로 설정하기로 협정으로 정했지만 지난 65년 동안 무장이 가득한 지대로 유지되어왔다. 남쪽의 경우 민간인 통제선(Civilian Control Zone : CCZ) 이북 지역과 그 배후의 접경지역은 사람들의 출입이 오랫동안 제한되어 오히려 비무장지대보다 자연이 상대적으로 더 잘 보전되어왔다. 자연유산(natural heritage)은 자연생태계의 보호할 가치가 있는 생물과 그 서식지, 그리고 무생물 자원으로 정의된다. 비무장지대에서는 다양한 생물들과 습지를 비롯한 서식지와 지형들이 있음이 여러 조사를 통해 확인되고 있다. 비무장지대는 완벽하고 보전이 잘 되어 있는 서식 공간은 아니었다. 하지만 한반도에서 그만한 다양성과 규모를 가진 공간이 없고, 향후 관리 방향에 따라 복원이 가능한 최적의 장소로서 의의가 있다. 그러므로 비무장지대와 잘 보호된 일부 민통선 이북 지역을 포함한 그 일원의 서식지 유형(habitat type)을 파악하고 지도를 만들어 관리한다면 한반도에서 멸종 위기에 있는 종들이나 멸종한 종들을 서식하게 하는 최적 장소가 될 것이다. 이때 한강 하구와 동해의 석호(lagoon) 등을 포함하는 것이 필요하다. 비무장지대 일원의 조사와 보호 노력을 남북 공동으로 진행해야 하므로, 특히 비무장지대 내부를 남북 과학자와 국제 전문가를 포함하여 국제 과학조사를 추진하고 장기 계획을 세워 보전과 지속 가능한 이용 방안을 모색하는 것이 필요하다.

• 한국수산과학회지
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• 제41권5호
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• pp.389-398
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• 2008

The regional characteristics of crackdown on illegal fisheries in Korea Waters are investigated using data from the Ministry of Maritime Affairs and Fisheries, local cities and Provincial governments, and the Korea Coast Guard from 1996 to 2006, focusing on the relationship between the crackdown on illegal fisheries, catches within the affected regions, and characteristics of similar crackdown in Chinese fishing vessels. Illegal fisheries in the South Sea were all strongly affected within each region, and a relationship between the crackdown and subsequent catches showed a relatively good correlation in the South Sea. As a monthly variation, a strong correlation appeared during the autumn season, but this strong correlation was not evident during the spring. This paper suggests that a relationship exists between the crackdown on illegal fisheries and subsequent catch rates, suggesting that an intensification of these efforts in the South Sea and the Yellow Sea, and attendant increases in manpower and equipment would result in a significant decrease in illegal fishing by Chinese fishing vessels from year to year.

• 한국환경과학회지
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• 제21권3호
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• pp.327-337
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• 2012

Air pollution inventories are aggregated around south-eastern part of the Korean Peninsular including Busan, Ulsan, and Changwon cities. Because densely populated cities are concentrated in this region, air pollutants emitted from one of these cities tend to be impacted on the air quality of other cities. In order to clarify the seasonal movement pattern of emitted particles, several numerical simulations using WRF/FLEXPART were carried out. Four cases were selected for each season. The Weather Research and Forecasting model (WRF) reproduced atmospheric flow fields with nested grids. The seasonal pattern of air mass of study area was determined by backward and forward trajectories. As a result, the air parcel moves from northwest to southeast due to northwesterly winds in spring and winter. Also air parcel transports from south to north in summer, and moves from west to east. Because the air mass moves differently in each season, these characteristics should be considered when performing air quality analysis.