• Journal of Radiation Protection and Research
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• v.26 no.4
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• pp.357-365
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• 2001

Intervention levels for protection of the public in a radiological emergency are theoretically derived by the cost-benefit approach with the concept of justification and optimization. Intervention levels on the sheltering, evacuation, temporary relocation and permanent resettlement for protection of the public are estimated with the cost to protective countermeasures and the value from dose averted which are the site specific parameters. As a result, it is confirmed that IAEA guidelines for intervention levels are applicable to the radiological emergency in Korea. Optimum ranges of 5 - 10 mSv/2days for sheltering, 25 - 130 mSv/week for evacuation, 15 - 90 mSv/month lot temporary relocation and 600 - 3,500 mSv/lifetime for permanent resettlement for intervention levels are also provided. The result can be applied as useful data to update intervention levels under the theoretical background in Korea.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.344-346
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• 2022

최근 자율운항기술개발이 활발하게 이루어짐에 따라 자율운항선 실증이 증가하고 있으며, 또한 자율운항선의 효율적 운용 특히 운항의 안전성을 위해 입출항 시기의 적절성 또한 중요해지고 있다. 이에 해상교통혼잡도를 예측하고자 하였고, AIS 빅데이터를 통해 선박별항적을 분석 및 분류하고자 하였다. 장기적 관점에서 PORT-MIS 선박입출항현황 데이터(호출번호, 입항일시, 출항일시, 전출항지, 차항지, 계선지)를 과거 AIS 빅데이터와 연결시켜 과거 항적 중 가장 가까운 항적을 찾고자 하였다. 그리고 당시 소요 시간을 반영하여 12개의 시간대별로 어느 시점에 어느 위치 구간에 선박들이 놓이게 될지 예측하였고, 특히 입출항 시기의 적절성에 핵심이 되는 13개로 모델링된 영역에 몇 개의 선박들이 항로를 지나는지에 따라 혼잡도(원활, 혼잡, 정체)를 구분하였다. 또한, 본 연구에서는 단기적 관점에서 실제 AIS가 수신된 후에도 유사한 항적을 검사해가며 혼잡도를 예측하고자 하였고, 이러한 장단기적 혼잡도 예측을 통해 미래 자율운항선입출항 지원 서비스의 안전과 그 적절성을 제공하고자 하였다.

• Journal of the Korean Geographical Society
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• v.51 no.6
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• pp.799-817
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• 2016

This article aims to reveal the ways in which a "space of difference" is produced and interpret the space as a heterotopic space, drawing the case of Filipino elderly care-givers in Israel. The in-betweens and temporariness of the migrants'experiences in the Israeli society lead to the creation of a heterotopic space. Paying attention to their particular life rhythm as live-in care-givers, namely weekdays-workplace and weekend-flat, this article explores how the migrant care-givers build their own society through a variety of spatial practices and multiple social relations based on the flat. In making the flat a perfect form of a lifestyle for their own, the migrants inscribe their presence in the flat in unique ways for different purposes, in a way different to that which surrounds it. However, the structure of flat not only signifies the migrants' marginality but also reflects the challenging position. The flat has functions in relation to all other space that remains, even if such connection often creates effects of contrast and difference. In this light, the flat is not merely an alienated and circumscibed exotic migrant enclave but a heterotopic space which is dynamically constructed in relation to other sites in the wider societal order.

• Journal of East-West Nursing Research
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• v.17 no.1
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• pp.48-56
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• 2011

Purpose: This study explored the health-related information of international students in Korea. Methods: Data were collected from 112 international students of 4 universities in P city regarding perceived health belief, health status, health habits, health management and medical costs. Results: International students in Korea perceived that their health belief was good and most of them belonged to healthy group. Also they reported good health habits and less severe physical complaints which can be easily treated. However, the portion of underweight or obese was large and physical complaints were frequent. Conclusion: To promote health of international students, nurses in university or community should develop appropriate programs to improve health habits and to access to health care services.

• Korean Architects
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• no.11 s.71
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• pp.18-22
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• 1974

금번 문화공보부 초청으로 내한한 '해외교포모국방문단'일행 중 해외건축계에서 활약하고 계신 건축가 두 분이 함께 내한 하였다. 이번'해외교포모국방문단'은 한국과 외교관계를 가지고 있는 세계 각국에서 한분씩 대표로 추천되어 되어서 내한케 된 것 입니다. 그 중 건축가 강석원씨는 불란서 파리 '한국교민회'회장으로서 '건축설계사무소'를 경영하고 계시며, 한국을 떠난 지 팔년이나 된다. 또 건축가 김성문씨는 '덴마크' '코펜하겐' 에서 '설계 사무소'를 개설하고 있으며 주로 공원, 도로, 어린이 놀이터 등의 조경계획을 담당하고 있으며 한국을 떠난 지 15년이나 된다. 그리고 최근에 이리노이주 공대에서 공학박사 학위를 받고, 일시 귀국한 건축가 김종성씨 세 분을 모시고 건축에 관한 좌담회를 가져 보았다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.31-33
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• 2002

전력이나 유선망 등의 기반시설 없이 임의의 장소에서 필요에 의해 일시적으로 구성되었다가 해체한 수 있는 네트워크 형태의 필요성이 대두됨에 따라 Ad-hoc 네트워크에 관한 여러 가지 연구가 진행되고 있다. Ad-Hoc 네트워크에서는 기존의 유선 네트워크 망에서와는 달리 게이트웨이나 라우터 등의 도움 없이 모바일 기기들 간의 통신이 가능해야 한다. 이러한 임의성과 휴대성, 그리고 이동성 때문에 야기되는 여러 가지 문제들을 해결해야,안정적이고 효율적인 통신을 보장할 수 있다. Ad-hoc 네트워크에서는 대부분의 경우 배터리가 에너지원인 모바일 기기들을 사용하므로 효율적인 에너지 자원 관리가 중요한 고려대상이 된다. 본 논문에서는 Ad-hoc 네트워크의 시스템 활동시간을 최대화시키려는데 중점을둔 효율적인 라우팅방법을 제안한다. 제안된 방법에서는 데이터 전송에 따른 에너지 소비뿐만 아니라 제어신호의 전송에 따른 에너지 소비를 함께 고려하였다.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.39 no.3
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• pp.42-55
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• 2021

This study investigated the memories of the natives and the migrants who had been living with the 760-year-old Zelkova serrata located in the Keangnam Apartment Complex in Dogok 1-dong. Place memory is a newly illuminated concept since the 1980s, and is also used as a new research methodology for studying and recording multi-layered memories left in a place based on feelings and traces of vivid memories. The urban development of Gangnam, which began in the 1970s, quickly changed rural to apartment complexes. The natives of Yeokmal were scattered throughout the country, and new migrants moved in. In the process, zelkova serrata was managed in different ways from time to time, and residents also establish relationship in different ways. Natives used to take a rest in the tree or swing at Dan-o, and recognized it as a place to receive the god during the village ritual. In other words, they shared the entire process of life and death and were given various roles depending on the lives of the residents. It is also a direct experience that was experienced in detail and a place where collective memories of residents are melted. On the other hand, with the construction of Keangnam Apartment, the management of zelkova tree has become stricter, making it impossible for migrants to access. Migrants have come to enjoy zelkova serrata visually, and the annual Yeokmal Traditional Festival makes common memories in the city. In addition, many people personified trees and received mental comfort. In addition, the nature of the old big tree was highlighted in the background of the city, and the symbol of "uniqueness and speciality" was newly formed, which led to the formation of pride and attachment. Through the memories of the two subjects' zelkova tree, we were able to examine the memories of the tree value, and management of protected tree in the city.

• Korean Journal of Social Welfare Studies
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• v.44 no.3
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• pp.323-346
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• 2013

The main purpose of this study is to analyze job sequences according to poverty profiles that the working poor have had. For the stated purpose, this study examines characteristics and patterns of job sequences by diving the subgroups, using the 10 year data of KLIPS and the sequence analysis. Major findings are as follows. The working-transient poor have different characteristics, such as longer working term, less job change, less number of gap and length, and relatively higher monthly income, from the working-recurrent poor and the working-persistent poor. However, there are no different characteristics between the working-recurrent poor and working-persistent poor, except for monthly income. Job sequences are divided into 5 clusters and job sequences types according to the working poor subgroups are quite different. Such analysis results would contribute to planning poverty policies based on job sequences differently seen in subgroups and finding specific policy alternatives to relieve the working poor.

• Journal of the Korean Vacuum Society
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• v.15 no.1
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• pp.81-88
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• 2006

Laterally self-aligned InGaAs/GaAs quantum-dots (QDs) have been fabricated by using a multilayer stacking technique. For the growth optimization, we vary the number of stacks and the growth temperature in the ranges of 1-15 periods and $500-540^{\circ}C$. respectively, Atomic force microscope (AFM) images and photoluminescence (PL) spectra reveal that the lateral alignment of QDs is enhanced in extended length by an increased stack period, but severely degrades into film-like wires above a critical growth temperature. The morphological and the photoluminescence characteristics of laterally self-aligned InGaAs QDs have been analyzed through mutual comparisons among four samples with different parameters. An anisotropic arrangement develops with increasing number of stacks, and high-temperature capping allows isolated QDs to be spontaneously organized into a one-dimensionally aligned chain-like shape over a few ${\mu}m$, Moreover, the migration time allowed by growth interruption plays an additional important role in the chain arrangement of QDs. The QD chains capped at high temperature exhibit blue shifts in the emission energy, which may be attributed to a slight outdiffusion of In from the InGaAs QDs.

• Journal of the Korean Society of Marine Environment & Safety
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• v.13 no.4
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• pp.15-19
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• 2007

Mass mortalities of the farmed sea squirt, Halocynthia roretzi, occurred in August, 2006 along the Gyeongbuk coasts of the East Sea without any pathological symptom. Suspecting the No. 10 typhoon, Wukong, which had passed over the relevant locations in the middle of August, 2006 as a culprit of the mortalities, we compared water temperature stratifications of the affected coasts before and after the typhoon. Just prior to the typhoon, cold waters lower than $15^{\circ}C$ were stratified at depths deeper than 10m probably by a persisting upwelling of cold bottom waters. The typhoon enforced water off-coast waters into coasts for 5 days, replacing the cold waters at depths $10{\sim}20m$ which can be justified by Ekman Spiral Effect. The results were an increment of water temperature by $10^{\circ}C$ and more at depths where sea squirts were suspended. The sudden elevation of water temperature might drive the sea squirts under abnormal stress to mass mortality.