스펙트럼 강도와 지반의 액상화 가능성에 관한 연구

박종관 서울産業大學校 1994 논문집 Vol.40 No.1

Ground reinforcements is the essential method to prevent the liquefaction of loose sand deposit. However, in the construction of the life lines, it is impossible to treat the whole loose deposit against liquefaction. As an countmeasure for the life lines against the liquefaction, a monitorning system can be considered for an immediate judgement of the liquefaction occurrence during an earthquake. Though shaking table tests on model grounds, pore pressure developments were investigated in terms of the surface spectral velocity, which was verified as a tool for the immediate judgement of the liquefaction occurrence.

파견근로자의 공정성 지각이 직무만족과 조직몰입에 미치는 영향에 있어 신뢰의 매개효과에 관한 연구

김종관,노태무 부산대학교 경영경제연구소 2007 經營 經濟 硏究 Vol.25 No.1

본 논문은 파견근로자들이 인식하는 절차공정성과 분배공성성이 종업원 개인의 직무성과인 직무만족과 조직몰입에 영향을 미치는데 있어 파견근로자들의 조직과 상사, 동료에 대한 신뢰의 매개효과를 연구하였다. 본 연구를 위해 근로자파견을 주 업무로 하는 기업 9개를 대상으로 242부의 유효한 설문결과를 활용하였으며 연구결과, 보상의 공정성과 신뢰와의 관계에 있어서 분배공정성은 조직, 상사, 동료신뢰 모두에 유의한 영향관계를 나타내었으며, 절차공정성은 조직신뢰, 상사신뢰의 경우에서만 유의한 영향관계를 나타내었다. 분배공정성의 경우, 동료신뢰가 유의한 영향을 미쳤으나, 조직신뢰와 상사신뢰의 경우에 비해 영향력이 낮게 나타났으며, 절차공정성의 지각과 동료신뢰는 직접적인 영향이 없는 것으로 나타났다. 보상의 공정성과 조직몰읩의 관계에서 정서적 몰입은 분배공정성과 절차공정성 모두 유의한 영향관계를 보였으며 분배공정성의 설명력이 절차공정성보다 높게 나타났다. 신뢰의 매개효과에 있어서도 분배공정성과 조직몰입 간의 매개효과는 나타나지 않았으나 절차공정성과 조직몰입간의 관계에서는 조직신뢰가 매개작용을 하는 것으로 나타났다. 이러한 연구결과를 바탕으로 연구의 의의, 한계 및 추후 연구과제에 대해 논의하였다. This paper studied on mediating effects of trust among dispatched worker's organization, senior and colleague. procedural justice and distributive justice which are recognized by dispatched workers effect job satisfaction that is job performance of individual employee and organizational commitment. We used 242 questionnaires from 9 firms mainly dealing with dispatching workers. It is also found that the distributive justice has significant effect on organization, senior and colleague trust and while procedural justice shows meaningful effect only on the organizational trust, senior trust. In case of distributive justice, although colleague trust has an effect on distributive justice, it shows less influence than organization trust and senior trust. In additional, there is no direct effect between perception of procedural justice and colleague trust. In the relation between justice of reward and organizational commitment, the affective commitment shows significant effect on distributive justice and procedural justice. The distributive justice has higher than procedural justice. In mediating effect of trust, there was no mediating effect between distributive justice and organizational commitment, but organizational trust works as mediating role in relation between procedural justice and organizational commitment. Based on results of this research, we discussed about meaning and limited of the research, and future study.

정신분열증 환자에서의 카페인 투여 급성반응

김도관,박종세,김용식 大韓神經精神醫學會 1988 신경정신의학 Vol.27 No.1

This study was conducted to investigate the acute effects of caffeine in chronic schizophrenia. Eighteen DSM-Ⅲ diagnosed chronic schizophrenic patients and sixteen healthy subjects were orally administered caffeine, 10㎎/㎏, in a double blind placebo controlled design after being free of caffeine for a minimum of 2 weeks. The effects of caffeine were assessed by employing Brief Psychiatric Rating Scale, Hamiltion Anxiety Scale, and measures of blood pressure, pulse and plasma caffeine level, prior to the challenge and 60 minutes afterwards. The results were as follows : 1) Activation factor(tension, excitement, mannerism and posturing) of BPRS was worsened significantly by caffeine challenge in the schizophrenic patients. 2) Caffeine produced significant increase in somatic anxiet factor score of HAMA in the healthy subjects. 3) There was no significant difference in blood pressure and pulse rate between caffeine and placebo-group except sitting diastolic BP in the healthy subjects, which was higher in experimental group. There findings suggest that caffeine tend to exacerbate symptoms of psychosis but do not increase anxiety in the schizophrenic patients compared with the healthy subjects demonstrated decreased sensitivity to the anxiogenic effects of caffeine.

대나무재의 접착성

노정관,김재경,김사익,조종수,윤승락 진주산업대학교 1999 산업과학기술연구소보 Vol.- No.6

3종의 죽재(맹종죽, 왕대 및 솜대)에 대한 특성(생재함수율, 절간길이, 두께등)의 변이 및 상온경화형 수지 접착제에 대한 죽재의 접착성능을 검토한 결과는 다음과 같다. 생재함수율은 죽고 및 절부나 절간부에 관계없이 솜대가 가장 낮았으며, 솜대나 맹종죽은 죽고가 증가함에 따라 점점 감소하는데 반해 왕대는 중간부가 가장 높았다. 절간부의 길이는 3죽종 모두 하간부나 상간부에서 보다 중간부에서 길었으며, 절간수 20까지의 절간길이의 평균은 왕대, 솜대, 맹종죽의 순이었다. 동일직경에서 간벽의 두께는 맹종죽이 가장 두꺼웠으며, 왕대가 가장 얇았다. 맹종죽에 대한 상온경화형 수지 접착제의 접착성능은 PVAc와 요소수지가 우수하였으며, 동일접착조건에서의 목재(낙엽송)와 목재 접착재료 보다도 내수접착강도는 약 2배 우수하였다. 구조용 상온경화형 수지 중에서는 수성고분자-이소시아네이트 수지 접착제의 접착성능이 가장 양호하였다. 접착성능이 비교적 우수한 PVAc 및 수성고분자-이소시아네디트수지에 의한 왕대의 접착성능은 양수지 모두 맹종죽 보다 우수하였다. 접착부위(절부+절부, 절부+절간부, 절간부+절간부)나 적층시의 접착면(외피부+외피부, 외피부+내피부, 내피부+내피부)에 따른 맹종죽의 접착성능에는 큰 차이가 없으나, 단지 내피부간의 절부와 절부의 접착성능은 타 접착면이나 접착부위 보다 10∼20㎏f/㎠ 낮았다. The variation of characteristics including green moisture content, internode length, and clum-wall thickness and the bonding properties of ambient setting resin adhesives in three bamboo species, Phyllostachys pubesens Mazel. et Z (Moso bamboo), P. bambusoides Sieb. et Zucc (Giant Timber bamboo), and P. nigra var. henosos Stapf (Hachiku bamboo), were evaluated. Among three species, Hachiku bamboo showed the lowest green moisture cintent without exception for culm height, node and internode parts. In species of Hachiko and Moso bamboos, as the culm height was increased, green moisture content in middle culm. Compared with lower or upper culms, the internode length was the longest in middle culm of all three species. and the order of averaged internode length under internode number 20 was as followed; Giant Timber bamboo>Hachiku bamboo>Moso bamboo. With same value of diameter, Moso bamboo contained the thickest culm-wall, while Giant Timber bamboo the thinnest. The superior bonding property of ambient setting resin for mon-structural uses in Moso bamboo was obtained in PVAc and urea-formaldehyde resin, and the wet bonding strength was two times better than in wood (Larix species) adhesion, Among the ambient setting resins for structural uses, water based polymer-isocyanate resin adhesives showed the best bonding properties. In Giant Timber bamboo, the bonding properties using PVAc and water based polymer-isocyanate resin adhesives were better than in Moso bamboo. There were no significant differences on bonding properties in Moso bamboo depending on adhesion position and zone, but the bonding property of node-node parts, which were bonded as inner layer and inner layer, was lower by 10 to 20㎏f/㎠ than other adhesion position and zone.

農村에 있어서의 母子保健實態 現況

李性寬,金斗熙,金希敎,洪淳鎬,芮旻海,鄭鍾學,申在鉉,朴在錫,申泰圭 慶北大學校 醫科大學 1972 慶北醫大誌 Vol.13 No.2

Tree 구조의 Data Flow Machine에서의 Grain-size 결정에 관한 연구

유관종,신현산 충남대학교 1985 忠南科學硏究誌 Vol.12 No.2

This dissertation discusses the grain-size of tree-structured data flow machine, AMPS & DDM1. We know that the factors which decide grain-size are each structure, communication overhead, and load balancing. Above factors affect the structural characteristics of tree-structured date flow machine. Therefore, we need to decide the grain-size appropriate to each data flow machine. As a result, we aim at Coarse-grain in AMPS and Fine-grain in DDM1.

데이타 플로우 시스템에서의 스케듀링 기법에 관한 연구

유관종 충남대학교 1991 忠南科學硏究誌 Vol.18 No.1

In this paper, we describe the existing scheduling algorithms and propose new heuristic schduling algorithm. This algorithm accepts program graph as input, and assign the nodes of graph, i. e. tasks, into processors and generates scheduled chart which describes the state of assignment of tasks and the processing overview of multiprocessor system. Program graph is a another representation of partitioned parallel program and we assume the execution time of each task and the communication time between tasks are given before scheduling with various values.

화강풍화토의 동역학적 특성치에 대한 실험적연구

박종관 서울産業大學校 1990 논문집 Vol.31 No.1

화강풍화토는 한국에서 대부분 차지하고 있는 대표적인 토질이다. 본 연구는 화강토의 동역학적 특성치를 실험적으로 연구함으로써 화강토에 기초를 둔 구조물의 동역학적 해석에 기여하고자 한다. 입도가 서로 다른 두 종류의 화강토를 상대밀도에 따라 시료를 성형하여 진동 삼축압축실험을 실시하였다. 실험을 통하여 전단계수와 감쇠계수를 시료와 상대밀도와 구속응력을 달리하여 구하고 이를 전단 변형율의 크기에 따라 표시하였다. 대표적인 결과로써, 전단계수는 화강토를 구성하는 입도 분포에 따라 구속응력, 시료의 상대밀도 및 전단 변형율과 관련하여 큰 변화를 나타내고 있다. 한편 감쇠계수는 입도에 따라 전단 변형율 또는 토질의 상대밀도와 관계없이 거의 일정한 값을 가지고 있다. Weathered granitic soil is the most representative as a surface soil in Korea. In this paper, the dynamic properties of Korea granitic soil are studied through the experiments. These dynamic characteristics are very important on the analysis of the foundations under dynamic loading such as machine vibration and earthquake. Soil samples having different grain sizes were prepared at the relative densities between 80% and 90%. Through dynamic triaxial compression tests, shear moduli and damping ratios were obtained at the levels of shear strain. As the results, shear moduli of granitic soils at a particular relative density show large variations according to the samples of different grain sizes. Hence, the damping ratio of a granitic soil seems to be a constant irrelevant to the levels of shear strain or relative densities of soils.

越南一農村地域에 있어서의 疥癬感染者 調査

李鐘寬 서울大學校 保健大學院 1968 公衆保健雜誌 Vol.5 No.2

This study was conducted to look about the status of scabies infections and the effectiveness of benzene hexachloride and Eurax for scabies patients. The sample selected for the study was on 214 scabies patients among 3.986 Vietnamese outpatients of the Korean Army Dispensary (Construction Supporting Group in Vietnam) which located near the market of L??i Thi??u District in Binh-Dung Province of Vietnam. The results of this study were as follows: 1. The infection rate on 214 scabies cases among 3,986 Vietnamese outpatients was 5.4%. 2. Scabies affects all ages and sexes. 3. Scabies occurred most commonly where cleanliness and medical facilities were lacking. 4. The scabies occurred throughout the year, and no occurate seasonal variation was observed. 5. The most common parasitic site of scabies was webs of fingers, and next volar surface of the wrists, groin, lower part of the abdomen, lower part of the buttocks, thigh, leg and feet, anterior axillary folds, umbilicus and periumbilical zone, elbow, perimammary areas. shoulder blades, and shaft and glans of the penis were followed in order. 6. Therapeutic effects of Eurax and Gammexane to scabies were excellent, and Eurax was more effective than Gammexance in subsiding the itching sensation.

保健所 登錄 肺結核患者의 管理 및 治療에 미치는 諸要因에 關한 硏究

鄭鍾學,李性寬 慶北大學校 醫科大學 1972 慶北醫大誌 Vol.13 No.2

The purpose of this study was to obtain available data concerning the attitude of ambulatory patients registered at health centers on the tuberculosis control, the management of patients by participants of health center, analysis of various factors effecting antituberculosis treament and the causes of interruption of chemotherapy. This study was conducted from March 1970 to February 1971. Materials and method: One thousand three hundred and fifty-four patients registered at three health centers in Taegu City were randomly selected for collection of data about the attitude of patients concerning tuberculosis control and management by the health center's officers. Eight hundred and twenty-six patients, for analysis of various influential factors in relation to efficacy of treatment, and 562 patients discharged during the past one year, for analysis of the causes of discontinued chemotherapy were selected. 1. Attitude of patients about tuberculosis control and management by health center's officers. Patients' attitude: The majority of the patients(95%) lived in poor economic conditions and 51 percent had families to support. There was high rick of infection for their family because they all lived in the same room(64%) and because of careless disposal of sputum(30%). Contacts examination for early detection of disease among families was as low as 40 percent. More than forty percent of patients had to work to support their families as hard as healthy persons. Most of the patients conducted normal marital lives and 39 percent of the patients had experienced a pregnancy during the illness. Fifty-five percent of the patients were registered late more than one month after the diagnosis of the disease. By the time of registration, 66 percent of patients had never been treated and among treated cases 61 percent took their medicine irregularly. Management of health center: Inadequate drug regimen at the time of registration by health officers was up to 32 percent and the rate of irregular drug collection was 26 percent. Irregular examination of sputum and X-ray turn out to be 48 and 16 percent, respectively. 2. Results(sputum negative conversion and X-ray improvement) of treatment by socioeconomical factors of patients and various factors concerning tuberculosis control and management. There were no differences of results between males and females. By age, those younger showed more favorable results than those older patients. There was proportional tendency between efficacy of treatment and living standard. The main causes of the failure of the treatment were that treatment began late in the course of the disease, unsupervised treatment before registered at health center, heavy-work which lead to fatigue, thoughtless marital life and pregnancy, inadequate drug regimen at health conter and irregular collection of drugs. 3. Drug resistance. Emergency of drug resistance: The rate of resistance at minimal inhibitory concentration of drugs was 87.5 percent among patients who took the medicine for more than 6 months period. The emergency of drug resistance was closely related to the experience of previous treatment conducted irregularly and inadequate regimen at health center and irregular collection of drug. According to degree of resistance, the slight resistant group revealed favorable results as well as the sensitive group while the moderate and high resistant group had unfavorable results. 4. Status of discharge. Forty-nine percent of patients discharged were treated completely but this does not imply complete healing. Among defaulters(interruption of treatment) fifty percent of them could not be reasonable discharged. The status of sputum and X-ray finding at the time of discharge concluding complete treatment, revealed 51 percent sputum positive and 53 percent active lesions in X-ray finding of patients, namely more than fifty percent of patients were discharged as infectious cases.