• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.28 no.3
• /
• pp.317-328
• /
• 2010

This paper describes the results of complete Bouguer anomalies computed from the Free-air anomalies that derived from Sandwell and DNSC08 marine gravity models. Complete bouguer corrections consist of three parts: the bouguer correction (Bullard A), the curvature correction (Bullard B) and the terrain correction (Bullard C). These all corrections have been computed over the East Sea on a $1'{\times}1'$elevation data (topography and bathymetry) derived from ETOPO1 global relief model. In addition, a constant topographic (sea-water) density of $2,670kg/m^3$($1,030kg/m^3$) has been used for all correction terms. The distribution of complete bouguer anomalies computed from DNSC08 are -34.390 ~ 267.925 mGal, and those from Sandwell are -32.446 ~ 266.967 mGal in East Sea. The mean and RMSE value of the difference between DNSC08 and Sandwell is $0.036{\pm}2.373\;mGal$. The highest value of complete bouguer anomaly are found around the region of $42{\sim}43^{\circ}N$ and $137{\sim}139^{\circ}E$ (has the lowest bathymetry) in both models. These values show that the gravity distribution of both models, DNSC08 and Sandwell, are very similar. They indicate that satellite-based marine gravity model can be effectively used to analyze the geophysical, geological and geodetic characteristics in East Sea.

• Journal of Hospice and Palliative Care
• /
• v.7 no.2
• /
• pp.232-237
• /
• 2004

Purpose: DNR order is generally accepted for cancer patients near the end of life at Hospice Ward. It means not only no CPR when cardiopulmonary arrest develops but no aggressive meaningless medical interventions. Usually on admission, we discuss with the patients' family about DNR order at the Hospice Ward. Recently, we experienced a terminal lung cancer patient who had been on the ventilator for two months after pulmonary arrest. CPR and artificial ventilation were performed because patient's family refused DNR order. There is no consensus when, who, and how DNR order could be written for terminal cancer patients in Korea, yet. Methods: Hospice charts of 60 patients who admitted between Jan and Jun 2003 to Hospice Ward were reviewed retrospectively. Results: The median age was 66(range $31{\sim}93$) and there were 31 males and 29 females. Their underlying cancers were lung (12), stomach (12), biliary tract (7), colon (6), pancreas (4) and others (19). The persons who signed DNR order were son (22), spouse(19), daughter (16) and others (3). But, there was no patients who signed DNR order by oneself. Thirty families of 60 patients signed on day of admission and 30 signed during hospitalization when there were symptom aggravation (19), vital sign change (4), organ failure (3) and others (4). There were 13 patients who died within 5 days after DNR order. Most of patients died at our hospice ward, except in 1 patient. The level of care was mostly 1, except in 2 patients. (We set level of care as 3 categories. Level 1 is general medical care: 2 is general nursing care: 3 is terminal care.) Conclusion: We have to consider carefully discussing DNR order with terminal cancer patients in the future & values on withholding futile intervention.

• The Korean Journal of Applied Statistics
• /
• v.27 no.5
• /
• pp.743-753
• /
• 2014

Kim et al. (2006) and Kim et al. (2009) reported a set of explanatory variables affecting donation frequency when they analyzed nationwide survey data on donations collected in 2002 by Volunteer 21, a nonprofit organization in Korea. The primary purpose of this paper is to correct computational errors found in Kim et al. (2006) and Kim et al. (2009), to rectify major results in the Tables and Figures and to supplement Kim et al. (2009) by providing new results. We add two logistic regressions to the ZIP and a mixture of two Poisson regressions of Kim et al. (2009). Through these two logistic regressions we could detect a set of explanatory variables affecting donation activity (0 or 1) and another set of explanatory variables, in which the volunteer (0, 1) variable is common, discriminating the infrequent donor group from the frequent donor group.

• Proceedings of the KAIS Fall Conference
• /
• 2012.05a
• /
• pp.25-29
• /
• 2012

본 연구의 목적은 농어촌지역의 음주문제 관련 상담센타, 사업장 중심의 절주 프로그램이나 치료 서비스가 취약한 형편이어서 농어촌 지역 직장인의 음주문제에 대한 대책을 마련하고자 하는데 있다. 본 연구의 대상자는 일 농어촌 지역에 거주하는 20세 이상의 남녀 직장인 530명을 대상으로 하였고, 설문에 동의하여 회수된 설문지는 512부였으며 이중 부실하게 응답한 12명의 자료를 제외한 500명의 자료를 최종 분석대상으로 하였다. 자료수집은 2007년 6월 12일부터 2007년 8월 25일까지 시행되었으며, 설문지의 내용을 이해하며 의사소통이 가능한 자에게 본 연구의 취지를 설명하고 연구에의 참여를 동의한 대상자에게 구조화된 설문지를 이용해 자료를 수집하였다. 1. 본 연구에 참여한 대상자의 음주에 대한 인식은 긍정적 인식의 평균은 2.93, 부정적 인식의 평균은 3.18로 나타났다. 2. 음주행태에서 음주경험여부는 현재 음주자가 79.7%로 가장 많았고, 비음주자 13.1%, 과거 음주자 7.2%로 나타났다. 음주빈도는 음주경험이 있는 대상자 중 '월 2-4회 마시는 경우'가 38.2%로 가장 많았고, 평소 음주량은 '소주 10잔 이상'이 34.6%로 많았으며 '소주 3잔 이상'인 경우가 전체 대상자의 92.2%를 차지하였다. 3. 대상자의 문제음주 정도 및 특성은 전체 대상자 중 CAGE를 통해 선별된 알코올 의존자(4개 문항 중 2개 이상이 그렇다고 응답하면 알코올 의존으로 규정)의 비율이 96명(25.1%)이었고, AUDIT를 통해 선별된 문제성 음주자(8점 이상)의 비율은 241명(64.8%)으로 나타났다. 4. 대상자의 음주로 인한 질병은 위장계 질환이 31.3.%로 가장 많았다. 이상의 연구결과를 종합해볼 때, 농어촌지역 직장인의 음주문제에 관한 구체적인 해결방안으로는 음주 문화에 대한 인식개선과 산업체 중심의 절주사업이 필요하며 농어촌 직장인 중 문제음주자 및 알코올 의존자의 조기발견 및 관리를 위한 알코올중독 예방 교육 및 진단 치료에 관한 교육 프로그램 개발이 필요하다.

• The Transactions of the Korea Information Processing Society
• /
• v.4 no.3
• /
• pp.685-697
• /
• 1997

A Viedo-on-Demand(VOD) service is a multimedia service that is realized by the rapid advance of computer and data communication techmologies. Basically, a VOD system is composed of a server and a number fo clients.The server stores and manages a large amount of digital moving picture data. Each slient sends an on-line requwet to the server and receives data for real-time displying. Many researches are performed on a VOD server using hard disks for the permanent video fata storage. However, a hard disk is less reliable and requires more storage cost than a massive storage device. Due to these resasons, a multi-level VOD system is proposed for using teh jukeboxes of optical disks as the permanent video storage,device. In this paper, we prpose the necessary software modules and protocols between the server and its clients for the implementation of the multi-level VOD server.

• Current Industrial and Technological Trends in Aerospace
• /
• v.5 no.2
• /
• pp.23-32
• /
• 2007

헬리콥터 주 로터 시스템은 헬리콥터 전체 성능을 좌우하고, 비행특성을 결정하는 핵심 구성품이다. 주 로터 시스템은 회전하면서 추력 및 조종력을 발생시키기 때문에 동적 밸런싱을 맞추는 것도 중요한 개발단계업무 중에 하나이다. 주 로터 시스템의 개발 과정에서 헬리콥터 비행시제 장착 전에 동적 밸런스 시험, 성능시험, 안정성 시험 등을 포함하는 훨시험(whirl test)을 수행하게 된다. 이 시험 수행을 위해 제작되는 시험장치가 훨타워(whirl tower)이다. 세계 유수 헬리콥터 회사들은 주 로터 훨시험을 위한 설비인 훨타워를 보유하고 있으며, 지속적으로 성능 개량 등을 통해 최신의 기술 및 장비를 적용하여 운영하고 있다. 본 논문에서는 대표적으로 사용되고 있는 해외 헬리콥터 회사들의 훨타워의 사례를 설명하고 설비의 기능을 기술함으로써 기술적 동향에 대하여 살펴보았다. 현재 한국형헬기개발사업(KHP)에서 구축중인 다목적 의 WTTF(whirl tower test facility) 요구조건 및 설계 현황에 대해서도 기술하였다. 당 연구원의 WTTF는 한국형기동헬기(KUH)의 주 로터 훨시험 및 내구성 시험을 위해 구축되고 있다. 본 시험설비는 연구개발용 시험과 양산용 시험을 모두 수행할 수 있도록 다목적으로 개발될 예정이다. 본 설비는 기존 해외 설비와는 차별화되어 다목적 시험을 할 수 있도록 설계가 진행중이며, 2008년12월에 구축 완료 예정이다.

• Journal of the Korean Geographical Society
• /
• v.40 no.6 s.111
• /
• pp.653-670
• /
• 2005

The purpose of this study is to explore a spatial agglomeration characteristics and innovative milieu of the shoemaking industry in Seoul. In order to explain it, currently discussed dynamic agglomeration economies approach is applied and as an example, shoemaking industry in Seoul has been analyzed. The result of this research can be boardly summarized into two points. Frist, agglomeration economy is changing from urbanization economy to localization economy in this newly rising core of shoemaking industry which is Sung-Su dong area. Also, cooperative effects based on collective efficiency between companies and people are being generated within the area. This is largely affected by networking infrastructure between companies and people within the area, non-trade dependency and social capital acclamation. Secondly, the lack of institutional agglomeration formation in this area is considered to be the obstacle for the long-term development and innovation spin-off. This means recognition switch-over and institutional concern and support is needed in the future from the public sector.

• Journal of Hospice and Palliative Care
• /
• v.19 no.1
• /
• pp.26-33
• /
• 2016

Purpose: This study was conducted to identify clinical characteristics of oncologic patients at a point when they signed their do-not-resuscitate (DNR) orders. Methods: From January through December 2014, we retrospectively analyzed the records of 197 patients who passed away after agreeing to a DNR order in the hemato-oncology department of a tertiary hospital. Results: Of all, 121 patients (61.4%) were male and 76 (38.6%) were female, and their average age was 58.7 years. Ninety-four patients (47.7%) had gastrointestinal cancer. The ECOG performance status at admission was grade 3 in 76 patients (36.5%) and grade 4 in 11 (5.6%). The patients' mean hospital stay was 20 days. The mean duration from the admission to DNR decision was 13 days, and the mean duration from DNR decision to death was seven days. Conclusion: Study results indicate that a decision on signing or refusing a DNR order was made by medical staff mostly based on the opinions of patients' guardians rather than the patients themselves. This suggests that patients' own wishes are not well respected. Thus, it is urgent to establish institutional devices to enhance cancer patients' autonomy regarding DNR and to define an adequate timing for withdrawal of treatments.

• Journal of the Korean Institute of Traditional Landscape Architecture
• /
• v.31 no.2
• /
• pp.82-91
• /
• 2013

This study was performed in order to analysis the landscape change and cause of scenic sites and surrounding environment is located in the Urban Residential Area since modern. The study was carried out using of field observations, literature review, cadaster map analysis from 1962 to 2010, and survey. It trace about Seongnagwon, Mapo Choi Sa-Young's old house, Seoul Seonjamdanji, Seoul Hanyang castle and those can be process of change per period. Also, it examine to original view of cultural assets and analysis about lots alteration with landscape alteration. Seongnagwon has original view which constructed the Songseokjeong and pond in 1954. Mapo Choi Sa-Young's old house has original view that move to Sungbook-dong and restore an old house. Seoul Seonjamdanji has it define original view that remained ruins by 1960's development. Seoul Hanyang castle has original view that stone fortress. Seongnagwon's landscape was changed by institutional factors. Mapo Choi Sa-Young house's landscape was changed by society economic factors. Seoul Seonjamdanji was changed by society economic and institutional factors. Seoul Hanyang castle was changed by technical and institutional factors. Generally cultural heritage of Sungbook-dong was changed by institutional and society economic factors. It is guessed that Seoul urban planning influenced Sungbook-dong development. The establishment of capitalistic economy system was backgrounds to it. Therefore, it expect to realized desirable landscape alteration that recognized potential value as culture resources.

• Proceedings of the KIPE Conference
• /
• 2011.11a
• /
• pp.7-9
• /
• 2011

본 논문은 LED 백라이트 구동을 위한 전력변환 제어기 설계 및 동특성에 대해 설명한다. 또한 근래 산업계에서 널리 사용하는 operational transconductance amplifier(OTA)와 operational amplifier(op-amp)의 상관관계를 분석하여 각각의 소자를 이용한 최적 제어기를 설계하였다. 설계와 해석을 위해 PSIM 시뮬레이션을 사용하였으며 구현한 PSIM 모델은 실험을 통하여 타당성을 증명하였다.