국지측량에서의 RTK-GPS 정확도 분석

박운용,김천영 東亞大學校 建設技術硏究所 2001 硏究論文集 Vol.25 No.2

Real-time Kinematic GPS enables high accuracy positioning by real time. If ambiguity use an integer solution, can obtain accuracy of several "mm", and can obtain accuracy of tens "cm" if use real solution. In this study, we accomplish surveying by existent traditional surveying techniques (Total Station), Static GPS techniques and new technology RTK –GPS techniques by Field Calibration about uniformity measuring point and then compared and analyzed each techniques positioning accuracy etc ., Result that achieve by Static-GPS in Plane area, about all measuring points, expressed error fewer than 3cm. Result that achieve RTK-GPS Surveying by Field Calibration in Plane area, could know that RTK-GPS techniques by Field Calibration is available in Plane area because expressing errors fewer than all 6cm, except case that do not get fixed solution of ambiguity. RTK-GPS by Field Calibration could know economically than existent conventional type measurement and existent GPS's measurement techniques that efficiency is very high.

위성항법시스템을 이용한 대상지별 단기선 정확도 분석

박운용,김천영 東亞大學校 建設技術硏究所 2001 硏究論文集 Vol.25 No.2

Satelite visibility, Accuracy, and Availability were increased by the combined GPS/GLONASS, But there are some problems such as differences in the time frame, differences in the coordinate datum, and the problem of solving carrier phase ambiguities in the combined carrier frequency solutions due to different GLONASS frequency. Therefore, the accuracy of single point positioning using the combined GPS/GLONASS will be assessed, and intend to study the characteristics of the combined GPS/GLONASS with considered the rate of data acquisition according to the visibility of satellite and elevation cutoff at the combined GPS/GLONASS.

간이정신진단검사(SCL-90-R) : 입영장정을 위한 집단선별검사로서의 가능성에 대한 예비적 연구

朴容千 漢陽大學校 精神健康硏究 1987 精神健康硏究 Vol.5 No.-

한국 고등학생에 대한 스트레스상황 대처검사(CISS:Coping Inventory for Stressful Situation)의 타당도 평가

박용천,김광일,Noh, Samuel 大韓神經精神醫學會 2000 신경정신의학 Vol.39 No.1

연구목적: 스트레스상황 대처검사(CISS: Coping Inventory for Stressful Situation)는 기질에 따른 스트레스 대처방식을 조사하는 도구로서 과업중심, 정서중심, 회피중심의 3가지 하위척도로 구성된 48문항의 도구이다. 저자들은 이 도구가 한국에서 적용될 수 있는지 여부를 알아보려 하였다. 방 법: 1997년 5월 1일부터 1997년 6월30일 사이에 서울의 남녀 고등학교 2학년 학생 300명에게 CISS 검사지에 답하게 하였다. 자료분석은 탐험적 요인분석을 하였고 각 척도에 대한 신뢰도, 상관관계, 평균 등을 조사하였다. 결 과: 탐험적 요인분석 결과 전체구조는 기존 CISS의 요인부하와 같이 과업중심, 정서중심, 회피중심의 대처구도를 재현하였다. 그러나 48개의 CISS항목 중 9개가 문제가 있었다. 회피중심 하위척도에서 4개의 항목, 정서중심 하위척도에서 5개의 항목이 불명료하였다. 하위척도간의 상관관계에서 여학생의 경우 요인간의 독립성이 있었으나 남학생의 경우 독립성이 약하였다. 결 론: 첫째, CISS가 횡문화적으로 안정성이 있다고 확실히 말할 수 없다. 세 가지 요인 추출은 북미의 경우와 동일하였지만 문항간 교차부하가 있었던 점, 각 요인간 상관관계가 있었던 점은 이들 구성이 상호 독립적인 측정법을 만족시키지 않을 수 있다는 것을 암시한다. 둘째, 대처의 개념화가 문화적 풍습과 선호도에 의해 영향을 받는다는 것을 알 수 있었다. 즉, 한국의 각 개인은 CISS에서 측정된 것과 같은 대처의 특수차원을 특별히 구분하는 것 같지 않다. 또한 구체적인 내용의 문항에 비해 추상적인 내용의 문항이 다른 요인에 교차 부하된 점은 번역이라는 문제를 생각하지 않을 수 없다. Objectives: CISS(Coping Inventory for Stressful Situation) is one of the measures to access the coping dimension with dispositional approach. Consisting of three subscales(i.e., task-focused, emotion-focused and avoidance-focused coping), CISS has 48 items and each subscales has 16 items. We undertook an investigation of the psychometric properties of the CISS in Korean highschool students to determine the extent to which this measure was generalizable to non-western populations. Methods: The duration of the survey was from 1st of May to 30th of June, 1977. The subjects were 300 of 2nd grade students from 6 highschools in Seoul. Exploratory factor analysis was performed, and reliability, correlations and mean difference were estimated. Results: Comparison of the factor loading patterns in our sample with published factor loading of the CISS confirmed that our loading patterns replicated established task-focused, emotion-focused and avoidance-focused coping constructs. However, 9 out of the 48 items were problematic. Of the avoidance-focused subscale, 4 items had unclear results, and of the emotion-focused subscales, 5 items had unclear results. Internal coefficients of the three subscales of the CISS range from 0.82-0.90 for male and female students. In intercorrelations among subscales, independence among factors was found in female students, but independence among subscales was not found in male students. Conclusion: Our results were equivocal in suggesting the cross-cultural stability of the structure of the CISS. We identified three underlying factors that replicated the established structure of the CISS in North America. However, instances of cross-loading among items and significant intercorrelations between factors suggest that these constructs may not constitute the mutually independent measures. Conceptualization of coping can be affected by the influence of cultural practices and preferences. The implication of the results is that Korean students in this sample did not consistently distinguish uniquely among the specific dimensions of coping as measured by the CISS in North America. We may have experienced more difficulties in replicating the factor structures of more abstract domains than concrete constructs due to the nuance of translation.

道를 바탕으로 한 정신과 진료

박용천 漢陽大學校 精神健康硏究 1998 精神健康硏究 Vol.17 No.-

우리문화에 적합한 정신과 진료 : 개업의에 대한 조사

박용천,김광일 漢陽大學校 精神健康硏究 1998 精神健康硏究 Vol.17 No.-

정신분열증에서 혈청 면역글로불린 농도의 변동과 관련되는 요인

朴容千,楊秉煥,金光日 漢陽大學校 精神健康硏究 1988 精神健康硏究 Vol.7 No.-

다짐粘土와 자연粘土의 透水係數 豫測

김용희,류제천,김송만,박춘수 忠南大學校 産業技術硏究所 2001 산업기술연구논문집 Vol.16 No.2

The permeability means a factor to affect the movement of fluid under the gravity or the body force. the number of engineering problems, as seepage problem, calculation of settlement velocity, and slope stability, is related with the coefficient of permeability of soils. Therefore, it is very important for geotechnical engineers to understand properties of coefficient of permeability. Hence, after his study adapted Kozeny-Carman's equation to variety factors which affected the permeability of clay soils. an appropriate factor could be selected. The study came to the conclusion that the most related factor between specific surface and permeability appears to be mass of #200 passing percentage in the case of compacted clay and clay content for natural clay. For that reason, the permeability of natural clay is affected by the electric-chemical property but the compacted clay appears to be affected by the change of clay fabric, because the compaction change flocculated structure into dispersed structure to destroy the fabric of clay particle. New equation was developed to applied #200 passing percentage and clay content to Kozeny-Carman equation. The coefficient of permeability of developed equation appeared that was contented in the limit of confidence level for the measured coefficient of permeability. The developed equation can use for estimating values in the coefficient of permeability of compacted clay and natural clay. In the future one will need many studies for getting more accurate coefficient of permeability

성인 물질남용 환자의 치료결과와 관련된 요인

김길숙,박용천,남정현,안동현,오동열 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.5

목 적 : 본 연구는 성인 물질남용 환자의 치료프로그램 탈락율, 치료결과 및 예후에 영향을 미치는 요인을 알아보기 위해 시행되었다. 방 법 : 1992년 9월 1일부터 1997년 4월 15일까지 국립서울정신병원 물질남용 입원치료프로그램에서 치료를 받고 퇴원한 환자 97명을 대상으로 병록지 검토를 통해 인구학적 특징, 물질남용상의 특징, 입원전 위험 행동력, 치료기간중의 특징이 치료완료여부와 관련이 있는지 분석해 보았고, 이중 전화추적조사가 가능했던 53명을 대상으로 물질남용 중단여부를 조사하고, 이와 관련된 요인을 알아보았다. 결 과 : 1) 퇴원형태에 따라 59명의 탈락군(60.8%)과 38명의 완료군(39.2%)으로 나누어 비교한 결과 탈락군은 입원기간이 짧고, 자의 입원율이 낮으며, 난폭행동의 과거력이 많고, 규칙위반의 횟수가 많은 것으로 나타났다(p〈.05), 프로그램에서 탈락한 주 이유는 병동내 규칙위반(45.3%), 산책중 도망(23.7%), 외출, 외박중 미귀원(15.2%)의 순이었다. 2) 전화로 추적조사가 가능했던 53명중 32명이 물질남용을 중단했고(60.4%). 21명이 아직 남용중인 것으로(39.6%) 나타났다. 남용군은 공존정신질환의 빈도가 높고, 과거 정신과적 입원 횟수가 많으며, 자살기도력의 빈도가 높은 것으로 나타났다(p〈.05). 3) 물질남용을 중단하게 된 계기는 국립서울정신병원의 치료프로그램에 참여하고 난 후가 45.3%로 가장 많았고, 치료를 완료한 환자일수록 퇴원후 치료결과가 좋은 것으로 나타났다. 그리고 물질남용을 중단한 환자일수록 직업을 가지고 있는 경우가 더 많았다(p〈.05). 결 론 : 물질남용 여부는 공존정신질환, 과거정신과적 입원횟수, 자살기도력등 동반된 정신과적 문제와 관련이 많은 것으로 나타나 이런 요인들에 대한 철저한 평가 및 치료가 필요할 것으로 추측되고, 환자의 동기는 치료를 완료하는 중요한 요인으로 나타나 입원 과정에서 치료에 대한 동기를 강화시킬 수 있는 정신과적 면담이나 전략이 필요할 것으로 생각된다. Objectives : We investigated the factors related to the treatment outcome for substance abuse inpatients. Methods : We reviewed the medical records of 97 patients who were discharged from the substance abuse treatment unit in Seoul National Mental Hospital. We then had follow-up telephone interview with 53 family members and / or patents of 97 patients. Results : 1) Among 97 discharged patients, 59 patients were dropped out, 38 patients graduated successfully from the treatment program. The dropout group had shorter treatment period, were more often admitted involuntarily, had greater incidence of violence history and violated ward rules more often(P<0.5). The main reasons for dropout were violation of rules(45.3%), escape during outdoor activities(3.7%), and refusal of return to the hospital(15.2%). 2) At the follow-up interview, 32 patients were abstaining from substances whereas 21 patients resumed use. The abuser group had more previous psychiatric admissions, more comorbid psychiatric disorders, and higher percentage of history of suicide attempts than the abstaining group(P<0.5). 3) After the discharge from the hospital, 45% of patients showed to discontinue substance. Treatment graduates were more in recovery from substance abuse. The abstaining group had a higher percentage of employment than the abuser group(P<0.5). Conclusion : The treatment outcome was more likely to be related with co-existing psychiatric problems such as previous psychiatric admission, comorbid psychiatric disorders, and history of suicide attempts. Therefore it is suggested that careful evaluation and appropriate treatment for such factors are needed for better treatment outcome. And psychiatric interview to enhance the motivation of patients is needed for completion of treatment.

가족력이 있는 알코올 의존환자의 자기지각 및 충동성

전현수,박용천,김석현,양병환,이정식 漢陽大學校 精神健康硏究 2000 精神健康硏究 Vol.19 No.-