• Journal of the Korean Association of Geographic Information Studies
• /
• v.3 no.1
• /
• pp.12-22
• /
• 2000

Recently urbanization and industrialization around the Nak-dong river watershed have lead to the regional environmental problems. In this viewpoint, we took up variables which were related to watershed environment, and found out spatial and environmental properties of the Nak-dong river using factor analysis, ANOVA test and geographic information system. The results may be summarized as follows; three common factors which were named as urban, agricultural and industrial pollutant factor extracted from statistical methods. Spatial distribution of watershed environment could be found by connection attributes of factor scores derived from factor analysis to digital map using GIS. According to the results, distribution of pollutant sources were concentrated in the main stream of the Nak-dong river and its tributaries, Kum-ho river. So it is necessary to manage the watershed environment in due consideration of environmental carrying capacity.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.35 no.6
• /
• pp.1329-1338
• /
• 2015

This article aims to develop model for the right policy Tools available from the cause analysis regarding the regional differences of subway modal split in Seoul metropolitan area. This allows two major factors of the most influential subway modal split to be proved and Portfolio Analysis is conducted. The results are as follows. Firstly, the two primary factors affecting subway modal split were shown as subway adjacent area and local line bus. It signifies that expansion of subway adjacent area, establishing the number of the subway stations and increase of local line bus are required in order to improve a diminishing subway modal split. Following that, pattern of the improvement to strengthen better subway connections are classified according to the two areas which are Concentration Area of Improvement in Subway Station Area (CAISSA) and Concentration Area of Improvement in Local Bus (CAILB). Our study revealed that Ganbukgu, Seodaemungu, Geumcheongu, and Gwanakgu were selected as the area of CAILB and Songpagu, and Junggu were selected as the area of CAISSA. As all things are considered, transportation policy makers should be taken into account in the two main factors driven by our study according to types in order to enhance the future subway share proportion.

• Journal of Hospice and Palliative Care
• /
• v.5 no.2
• /
• pp.94-100
• /
• 2002

Purpose : The system to refer terminally ill patients to palliative or hospice care which ultimately give them emotional, psychological, and social support hasn't been fully developed and organized yet in Korea. The controversies concerning the current referral system are being analyzed to present the improvements. Methods : The questionnaires were asked to be filled out by family members of the 76 patients by phone interview, who were referred from the Seoul National University Hospital between April, 2001 to March, 2002. They were referred to the 35 palliative and hospice care-giving institutes and hospitals which were given questionnaires by mail. Results : Of the 76 patient's family members, 47 family members accepted to answer the questionnaire. The first thing that influence to family to determine the referral of patient was solicitation of doctors or nurses (44%). And they were influenced by allowance for the other things such as convenience of patients (32%), convenience of caring family members (24%). In the course of determining of referred institutes, responders had considered at first their dwelling area, and then fame of institutes, the place which patent had wanted to spend last hours or which is suitable for patient's funeral service, and their financial condition. Thirty-eight the 47 responders answered that they had experienced difficulties in referral procedure. The worst among difficulties was unwanted discharge, and followings were lack of information about the referred institutes, concern about patient's suffering, resistance of patient and opposition of other family members, etc. Although they expressed dissatisfaction in referral procedure, most of them answered they had been satisfied with hospice care at referred institute after referral. Merits of referral which responders counted were patient's peace, caring family's comfort and reduced cost in order. Of the 35 referred institutes, 24 institutes' staffs responded mail questionnaires and sent to us in return. Except one responder, the rest approved the referral system and thought that referred patients had been satisfied with their hospice care. And they claimed that systemic support of the government is definitely necessary. The most difficult thing which responders experienced in care of referred patients was lack of information about patients. Besides, there were patient's financial problems, lack of understanding about their institutes of patients or family, and inconvenience of terminal cancer patient's pain control. Conclusion : The development and support of the organized referral system is needed to alleviate the troubles which patients, family members, and palliative or hospice institutes and hospitals have to face through the procedure of the referral.

• Environmental and Resource Economics Review
• /
• v.23 no.2
• /
• pp.157-185
• /
• 2014

The Kyoto Protocol has extended its life until 2020 by the decision at COP18 in Doha, Qatar in 2012. So has the Kyoto Mechanism of CDM, JI, and ETS. Nonetheless, the sustainability of CDM projects is jeopardized by the recent rule changes in the international emissions trade market such as EU ETS and the price decrease in emission credits. In particular, the domestic CDM projects reducing non-$CO_2$ GHG emissions are being directly affected. This study examines the trend of carbon credit price change in the international market. It also examines how the rule changes in the international emissions trade market have affected domestic non-$CO_2$ CDM projects through which mechanisms. The policy implications drawn from this study is two-fold: it suggests how the government can assist the project developers in utilizing GHG emission reduction technologies and the market in promoting investment environment before the domestic ETS enters into effect in 2015; apart from possible measures within ETS, an additional measures such as bilateral carbon offset system is suggested to help the private sector reduce uncertainty in investment and increase options to choose.

• Journal of Korea Port Economic Association
• /
• v.38 no.3
• /
• pp.1-13
• /
• 2022

The Busan-Ulsan-Gyeongsangmando(BuUlGyeong) megacity aims to grow into the second metropolitan area by strengthening the growth and connectivity of the southeast region in Korea. In order to analyze the linkage between port logistics and regional economic development, this study focused on the economic community of BuUlGyeong. The findings are as follows. First, it was found that vessel entry and departure had a positive (+) significant effect on cargo volume. Second, the cargo volume was found to have a preemptive effect on the vessel entry and exit ports and the composite index. Third, the composite Index was found to have a significant positive (+) effect on cargo volume. From the results of the variance decomposition, it can be confirmed that the composite index has a weak impact on ship entry/exit and cargo volume. Based on the above findings, some policy implications are derived. First, regional governments in BuUlGyeong should provide incentives to revitalize the maritime economy such as the expansion of maritime port infrastructure and encouraging investment. Second, since an increase in cargo transport volume at major national ports linked to the BuUlGyeong region has a positive (+) effect on economy. Therefore it is necessary to expand actively port marketing and regular service for the country and ports. Third, investments should be made continuously to expand the marine port infrastructure such as the expansion of facilities so that global shipping companies can continue to call megacities in BuUlGyeong ports for super-large ships and cruises.

• Journal of Internet Computing and Services
• /
• v.21 no.1
• /
• pp.201-210
• /
• 2020

This paper proposes a framework for the battle damage assessment (BDA) of electronic warfare linked to cyber warfare. Thanks to the rapid development of information and communication technology, the importance of cyber warfare and electronic warfare in cyberspace is increasing. Therefore, the BDA for cyber warfare and its associated electronic warfare in cyberspace is an important factor that affects the success or failure of military operations. In this paper, we propose a method to calculate measure of performance and measure of effectiveness by classifying the electronic warfare system into large / medium / small classes according to the type of electronic warfare. By setting up a hypothetical scenario, we show the effectiveness of the proposed framework.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2016.05a
• /
• pp.125-125
• /
• 2016

남강 권역은 5개의 단위유역으로 구성되어 있으며, 남강A, 남강B, 남강C, 남강D와 남강E로 명명되고 1단계 수질오염총량관리제도 시행 이후 유역 내 개발 등으로 인한 오염원이 증가하고 장기간 퇴적된 저니층으로부터 오염물질이 용출되는 등 수질의 자정능력보다 더 많은 오염물질이 수체내로 유입됨으로써 수질이 악화되자 수량확보 뿐만 아니라 남강의 수질관리에 대해서 관심을 가지기 시작하였다(GNDI, 2010). 남강 하류수계는 하상구배가 매우 완만하며 유속이 느리다. 따라서 물의 체류시간이 호수와 비슷한 양상을 보이고 있다. 더욱이 남강 하류수계는 주변의 도시와 농경지로부터 물의 소모량이 크기 때문에 하류수계의 물의 흐름이 더욱 완만해지고 이로 인하여 수질 악화가 가속화되고 수역의 영양단계가 점점 증가하는 부영양화현상이 발생되고 있다. 남강하류수계와 같이 부영양화 된 수계내의 미처리 된 영양염을 이용한 식물플랑크톤의 생산에 의해 자생BOD가 공급된다. 따라서 남강댐 하류지역과 같은 수리 수문학적 특징을 가진 유역은 수질관리를 위해서 특정 수역에 유입 BOD와 자생 BOD가 어느 정도 기여하는가를 정량적으로 파악한 후, 기여도에 따라 오염원인 물질을 줄이기 위한 수질관리 방안이 설정되어야 한다. 본 연구에서는 남강유역의 오염원의 기여율 분석을 위해 하천수질모델인 QUALKO2를 사용하였으며, 점오염원 뿐만 아니라 수질에 상당한 영향을 끼치는 비점오염원의 영향을 통합적으로 고려하기 위하여 유역 모델인 SWAT과의 연계방안을 제시하였다. 또한 모델의 연계 적용을 통해 산정된 내부오염원과 내부오염원의 기여율과 수질측정결과를 활용하여 분석한 기여도와의 비교를 수행하여 신뢰성을 확보하였다.

• Journal of Science Education
• /
• v.43 no.2
• /
• pp.195-206
• /
• 2019

The study aims to find a way to guarantee high school students choose science subjects by exploring its necessity as a prerequisite for admission to university science and engineering major courses. For this purpose, a survey was administered to 516 science & engineering college students to investigate their cognition and completion of the prerequisite science subjects related to their major, department adjustment, and influence on their major of study. Among nine major clusters, Physics was identified as a science domain with a high relevance to majors in five major clusters, and Chemistry in three. The students who completed both science I and II subjects related to their majors responded most positively to the usefulness of prerequisite subjects to their studies. Suggestions include conditions for the opening of science II subjects, strengthening the connection between science subjects and IT, promotion of linkage between the prerequisite subject and major studies to assert students' choice of science subjects in high school.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2006.05a
• /
• pp.819-823
• /
• 2006

본 연구는 SWAT-MODFLOW에 포함된 양수모듈 (MODFLOW의 well package와 SWAT의 결합)을 경안천 유역에 시험적으로 적용한 것이다. SWAT-MODFLOW 모형에서 SWAT 모형의 대수층과 MODFLOW 모형의 Well Package의 연계는 함양우물과 배출우물 모두 사용이 가능하며 이 중 얕은 대수층에서의 배출우물에 관한 적용을 수행하였다. 물이동의 목적지는 하천, 저수지일 수도 유역외일 수도 있는데 양수된 물이 유역 밖으로 소비되는 경우로 국한하였다. 이를 위해서 소유역내 MODFLOW의 셀에 배출정을 위치시키고 두 가지 경우의 양수량에 대해 지하수위 변화와 물수지 변화를 살펴보았다. 양수 후 일정기간이 지난 시점에서 양수정 영향권내 유역 단면(남-북방향)에서의 지하수위 변화를 살펴본 바 개선된 양수모듈은 유역내 물이동을 효과적으로 묘사하고 있으며 지하수 유출량의 감소분은 하천으로 옮겨져 지표수 증가분으로 계산되고 있음을 물수지 변화를 통해 확인할 수 있었다.

• Journal of Navigation and Port Research
• /
• v.39 no.6
• /
• pp.499-506
• /
• 2015

To analyze the port choice hierarchy, factorial and AHP analysis were conducted based on the survey for shippers using west coastal ports. As the result of analysis with 17 factors, 6 main factors; port service, port operation and geographical condition, connectivity to hinterland, port cost, accessibility and facilities were chosen. Based on this, AHP and correlation analysis of each factor were conducted. And the results were shown as cost, service, facility, connectivity, accessibility and operation in order. In addition, several ways for incentive program, the most important factor based on AHP analysis, to influence shippers around west coastal port were reviewed. As the result of review for the incentive program of domestic container ports, it was shown that three ports, Gun-san, Dae-san and Mok-po, offer incentive to shipper while two ports, Pyeong-tak and Dang-jin, do not. Therefore, the former three ports need to reinforce the existing incentive program while the latter ones introduce it.