• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.29 no.4
• /
• pp.367-380
• /
• 2011

This paper has focused on deriving a GPS based geodetic network adjustment strategy to continuously determine coordinate sets of the national geodetic control points. After domestic literature review on the topic and overseas case studies about countries that recently reformed their geodetic infrastructure have been carried out, a simplified geodetic network consisting of two layers, namely GPS active and passive network, has been proposed to maximize effectiveness of the network adjustment through reducing the number of the passive points. Furthermore, a GPS data processing and network adjustment procedure has been derived to support the continuous management scheme. While a scheme for the active layer adopts a sequential least squares adjustment based on a multi-baseline, that of the passive layer employs a multi-session adjustment technique with respect to 3-dimensional baseline vectors. Finally, experimental adjustment against a network comprising 24 active and 6,900 passive stations has been performed to demonstrate the efficiency and the effectiveness of the proposed method.

• Journal of Environmental Impact Assessment
• /
• v.26 no.4
• /
• pp.257-271
• /
• 2017

In Korea, soil is being transported in and taken out for the purpose of national land development, but the soil is being moved without consideration of soil contamination. Therefore, this is a policy-focused study of the management system on soil moving. In this study, we analyzed current state of domestic and foreign management and suggested three alternatives for management of soil moving in 1) self-regulation, 2) obligatory regulation, 3) phase-in according to types of regulation. In order to establish a clear and reasonable management system for soil movement in the future, it is necessary to improve the legal and institutional limitations of the current soil environmental law as suggested by this study.

• Journal of Digital Convergence
• /
• v.13 no.10
• /
• pp.185-194
• /
• 2015

We are living in big data. Specially, female consumers are the hottest issue. Female consumers have a great effected on consumer culture as comparing male consumers. Therefore, this study analysis characteristics of female consumers through case study and literature review. The summarized results of research are as follows. First, percentage of economically active population of unmarried female of 20s is high, so they actively spend lots of money on buying goods and so on. Second, they are ahead of the curve and follow entertainers. Third, domestic case studies(SD online buz marketing, C.S.I. Shinsegaemall project, Service center only for female consumers of Shinhan Card, Travel Service of Lotte Tour) and international case studies(Big data service of Target, ZARA, and Walmart) show that if we utilize big data, we can raise re-purchasing desire and analysis needs of female consumers and create new female consumers.

• Research in Community and Public Health Nursing
• /
• v.20 no.4
• /
• pp.421-432
• /
• 2009

Purpose: This study investigated trends in family nursing intervention studies and evaluated the quality of studies using the RCT design. Methods: This study included a total of 898 abstracts published from 1977 to 2007 in order to describe trends in family nursing intervention studies. Out of 898 studies, 153 RCT studies were selected for quality evaluation. The criteria of Jadad et al. (1996) were employed for the quality evaluation. Results: The number of RCT studies on family nursing interventions increased since 2001. Only 6.8% of the studies were published in the area of nursing. Most of the family interventions (27.1%) focused on individual family members and only 8.2% of the studies provided interventions to family as a whole unit. Nine different modes of family nursing intervention could be categorized, but none of the studies used the double blind design. Few studies utilized protocols for interventions. Only 17.5% of the studies reported the rationale for sample size. The mean score was 1.6 out of 5 according to the criteria of Jadad et al. (1996). Conclusion: Refined definitions and attributes of family nursing intervention modes are needed. Most of the studies did not meet the expectations of RCT. Thus, it is needed to improve the quality of design. More RCT studies should be conducted to provide evidence-based practice of family nursing interventions.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.22 no.4
• /
• pp.78-84
• /
• 2008

Inundation of substation and ground power equipment broke out every summer season in low-lying downtown and low-lying shore by localized heavy rain, typhoon and tidal wave. In case inundation excluding the exchanging cost of equipment, it occurs a great economic and social loss owing to recovery time and events of electric shock occur by inundation electrical facility. So we researched the installation situation of substation and power equipment and inundation loss at Flood Danger Area. And we analyzed refutation or law relating to the flood protection counterplan of US, England Australia. We present flood protection countermeasures by survey and analyzing the internal standard and his paper will be used to resent a reform proposal of electrical feinted law about flood protection.

• Korean Journal of Remote Sensing
• /
• v.27 no.1
• /
• pp.1-7
• /
• 2011

Satellite imagery information have not been fully utilized due to the low R&D investment in remote sensing application though Korea had succeeded in developing series of earth observing satellites during the last decades. However, another series of earth observing satellites such as KOMPSAT 3, 3-A, 5 are going to be launched in the near future. And recent global warming issues stimulate both private and public sectors to make the most of satellite imagery information. Therefore, it is inevitable to promote the utilization of Korean satellite imagery information. In this study, we analyzed the demand and restrictions in exploitation of satellite imagery information in Korea through the online survey and interview. The results showed that the standardization of pre-processing, service of detailed technical information, fast and reliable image data delivery system are mostly required.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.3 no.2
• /
• pp.1-29
• /
• 2008

The objective of this study is to develop new entrepreneurship education program and to enhance the program by applying new program. First, this paper examined domestic studies for preceding research on entrepreneurship education, and did foreign studies as theoretical background based on the examination. And this paper drew new models for entrepreneurship education program by analyzing education program from American and Japanese graduate school of entrepreneurship. The model of entrepreneurship education program was drawn by theoretical range, educational system and practical model, and presented reform measures by applying that on the Graduate School of Entrepreneurship. The range of entrepreneurship education program is defined from the moment when an entrepreneur decided to his entrepreneurship to initial growth stage, and should educate specific knowledge required to the development of companies and measures against potential problems on the way to growth it. An entrepreneurship training program should be organized curriculum by the growth stages of company.

• 한국방재학회:학술대회논문집
• /
• 2011.02a
• /
• pp.64-64
• /
• 2011

최근 전 세계적으로 구제역, 화산, 지진재해 등 장기적이고 광역적인 재해 재난의 심각성을 반영하는 듯 다양한 기술개발과 재난관리 적용성에 관한 연구가 전개되고 있다. 그 가운데 인공위성에 대한 가치와 활용에 대한 기대치가 높아짐에 따라 국내외로 신속한 재난대응 및 광역적 피해지역에 대한 조기분석 등에 관한 다양한 지원체계구축에 대한 연구가 심화되고 있다. 국내에서도 재해 재난에 대한 인공위성의 활용성 및 실무적 대안마련에 대한 검토가 시작되고 있으며, 특히 재해시 영상의 확보 및 분석과 의사결정지원 등 재난관리 프로세스에 대한 정부부처의 활용방안 마련에 대한 기대가 높아지고 있는 가운데 재난총괄기관인 소방방재청은 국립방재연구소에 방재영상분석팀을 신설하였다. 2010년 1월 HAITI 지진피해, 2010년 12월 삼척 산불모니터링, 2011년 1월 포항 폭설피해 등의 재해 재난 분석을 통해 의사결정지원체계를 구축하고 있다. 위성영상 분석기술은 국외기관과 비슷한 실정이나, 본질적으로는 영상촬영 및 수급문제 해소에 있다고 하겠다. 현재, 지구관측센터(KEOC) 및 한국항공우주연구원에서도 이와 같은 수급체계에 대한 문제의식을 공유하고 있다는 점은 재난관리업무 담당자로서 고무적이고 개선에 대한 희망이 밝다. 향후 본 연구를 기반으로 우리나라 재난관리업무에 있어 위성영상을 기반으로 하는 선제적이고 과학적인 재난관리기법이 개발되고 방재분야의 위성영상활용의 위상이 높게 제고 되었으면 한다. 이와 관련하여 본 논문에서는 현재 전 세계적으로 운영되고 있는 인공위성들을 대상으로, 시 공간 해상도별 분포도를 작성하여 인공위성의 특성을 살펴보았다. 특히, 한국항공우주연구원과 소방방재청에서 2010년 10월에 가입한 국제재해관리를 위한 위성영상활용 협력기구인 International Charter에서 재해 재난관련 위성영상 분석 및 현황을 조사하여 재난유형별 활용성을 검토하였다. 마지막으로 조사 분석된 내용을 토대로 위성영상을 통한 재난관리 분야에 적합한 업무 프로세스를 도출하였다. 또한, 재해발생지역에 대한 신속한 위성영상의 확보와 정량적 피해규모 파악에 따른 응급 복구지원이 가능한 대응전략에 대해서 검토하였다.

• Journal of Korean Tunnelling and Underground Space Association
• /
• v.15 no.1
• /
• pp.25-31
• /
• 2013

In this study, the total loss and damage ratio of maintenance monitoring which is installed and operated in the domestic and foreign tunnel structure is researched and analyzed for estimating the loss and damage ratio of maintenance monitoring sensor of subway tunnel. The total loss and damage ratio at the elapsed time of 5-6 years after installation is 14.2% in the Seoul metro line no.5,6 and 7, 14.8% in the section 1 of the Seoul metro line no.9, 13.9% in the Channel tunnel of England and all of them are close to 15%. Therefore, it is reasonable to reflect that the total loss and damage ratio of maintenance monitoring sensor of subway tunnel is estimated provisionally 15% on design, and hence the study of the loss and damage ratio with the number of elapsed years in long-term by the measurement category will be needed.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.43 no.5
• /
• pp.456-465
• /
• 2015

Dual-bell nozzle can overcome the performance losses of the conventional bell-shaped nozzles which induced by off-design operations with either over-expanded or under-expanded exhaust flow and minimize the losses of the specific impulse. In United States, Rocketdyne analyzed thrust characteristics according to the shape of the expansion nozzle and NASA conducted hot firing tests with various altitudes. DLR, which is one of the research institute of the Europe, is carrying out research for the different cases of inflection angle, nozzle length and expansion ratio. MAI of Russia applied the slot nozzle to the expansion region in order to reduce the performance losses. In Asia, both the Japan and the India are researching on the dual-bell nozzle and Mitsubishi cooperation of the Japan registered its patent. In this paper, concepts and performance of dual-bell nozzle, which can compensate altitude, are investigated and trends of current research are summarized. It is necessary for Korea to research on the dual-bell nozzle for lucrative space development.