고등어 旋綱의 魚探記錄에 關하여 : Submarine Illumination and Distribution of Fish Shoal Aggregated by Attracting Lamp 集魚??誘集時 水中照度와 魚群分布

朴正埴 제주대학교 1975 논문집 Vol.7 No.-

This study described on the submarine illumination and the fish finder recordings for the distribution of fish shoal when the mackerel of fishes of the main object in the purse seine of the Jeju was aggregated by attracting lamp, which was investigated from Apr, to Oct, 1975 in the mackerel fishing ground of Jeju near sea. Arrangement of the attracting lamps and a method of submarine illumination's measurement indicated to Fig. 2. 1. Results of a submarine illumination's measurement was equal to Fig. 4A, B 2. In case of fish shoal was aggregated by submarine attracting lamp, distribution of a vertical direction was 10∼25m depth centering lamp and distribution of a horizontal direction was 20∼30m radius. Submarine illumination of this time was 12-1 Lux at vertical direction and 1∼0.2 Lux at horizonted direction. 3. Distance of between the fish shoal and the lamp reduced about 4∼5m in the 30m boundary centering attracting lamp. 4. Alternation of age of the moon for a unit attracting catches show a peak in 6 day and 27 day of age of the moon. 5. Alternation of attracting time was 70% before 2.00 a.m and 28% after 2.00 a.m into 2.00 hour boundary. 6. Catches for the time required of aggregating was 44.2% in 1∼1.5 hour's time and 45.5% in 1.5∼2hour's time.

축방향 그루브형 히트파이프의 형상에 따른 성능특성

서정세,박영준,권운식 慶尙大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.14 No.-

In this study, analysis is made for the effects of groove shape on the thermal performance of a axial groove heat pipe. The mathematical models of two-phase flow in grooved heat pipe are presented for the capillary limitation as steady state. Generally, the heat pipe performance depends on the capillary pressure and liquid flow. The friction force of liquid flow through the groove increases with the groove width decreased, and then the capillary pressure is improved in the gas-liquid interface of groove. Therefore, the optimal groove width shape exists for the maximum thermal performance of heat pipe. In this paper, the optimal groove shape and scale are presented by considering both capillary pressure and liquid flow.

自動 曳繩釣 漁具의 試作

朴正植,徐斗玉 濟州大學校 海洋資源硏究所 1982 해양과환경연구소 연구논문집 Vol.6 No.-

濟州島 近海의 表層에 來游하는 가다랭이, 방어, 잿방어, 부시리, 삼치등의 漁獲에 利用할 無端式 曳繩釣魚具와 回轉機器를 試作하여 小型 漁船에 裝置하고 試驗하여 良好한 結果를 얻었으며 그 結論은 아래와 같다. 1. 回轉機器는 船尾部와 船의 中央部 甲枚에 設置하여 無斷式 曳繩釣魚具를 曳引하면서 連續 回傳시킬 수 있었다. 2. A型 漁具는 機器의 驅動로라에 의해 22.8㎝/sec로 連續 回傳되면서 曳引되었다. 3. 船速을 3m/sec로 하고 A型 漁具를 曳引할 때의 張力은 15.7㎏였다. Skipjack (Katsuwonus pelamis), Yellow tail (Seriola quinqueradiate), Pudder fish (Seriola purpurascens). Jack (Seriola aureovittata) and Spanish mackerel (Scomberomorus niphonius) were caught mainly by trolling gear in the coastal water of Jeju Island. mainly by trolling gear in the coastal water of Jeju Island. As this conventional gear was improved the automatic trolling gear which composed of an endless trolling gear and a rotary equipment, it was manufactured and made an experiment in the sea. 1. The rotary equipment which was installed on the stern or the center deck of fishing boat could be revolved an endless trolling gear. 2. The endless trolling gear of type A was continually rotated with 22.8㎝/sec in revolving speed of main line by a rotary epuipment. 3. The hydrodynamic resistance of the automatic trolling gear was 15.7Kg when a fishing boat towed fishing gear of type A with a towing speed of 3m/sec. This automatic trolling gear has set on a fishing boat(G.T. : 8.1 ton, 45HP), the result was very satisfactory.

논리 정보를 이용한 회로분할 알고리즘 연구

김정환,장영식,이성준 啓明專門大學 産業開發硏究所 2001 啓明硏究論叢 Vol.19 No.1

일반적으로 분할은 그래프 정보를 이용하여 이루어졌으나 논리 정보의 유용성을 보이기 위한 여러 방법들도 제안되었다. 본 논문에서는 분할된 회로의 절단집합에서, 절단선을 두번 이상 지나는 경로는 개선이 가능하다고 가정하고, 선택된 경로에 논리적 정보를 이용하여 변환함으로써 절단 집합의 크기를 줄일 수 있음을 보이고 있다. 잘 알려진 FM 알고리즘을 이용하여 초기분할을 만들고, 논리정보를 이용하여 선택된 개선 가능 경로를 기능적으로 동일한 회로로 변환하였다. 실험 결과에 따르면, 제안 알고리즘은 약 15%의 절단 집합 축소를 보여준다. Generally, graph information is used for partitioning but, various partitioning method have been proposed to show availability of logic information of circuit. In this paper, we suggest that the path to go through a cut-line more than twice can be improved and show that the size of cut-set is reduced by decomposing the path using logic information. First, we perform initial partitioning for a given circuit using FM algorithm. and then transform into the functionally equivalent circuit for the selected improbable path using logic information. This partitioning algorithm using logic information shows 15% reduction of cut-set size compared to FM algorithm.

채널에러에 대한 암호시스템 동기 성능개선에 관한 연구

장영식,김정환 啓明專門大學 産業開發硏究所 2001 啓明硏究論叢 Vol.19 No.1

암호시스템의 일반적인 특성 및 채널에러에 대한 문제점을 소개하고, 암호시스템 중 가장 효율적으로 실현되는 스트림 암호시스템을 모델링하여 암호블럭의 키이 인증코드 및 키이정보 전송시 채널 에러율에 따른 특성을 분석하였으며, 또한 키이정보 손실로 발생되는 채널에러를 극복할 수 있는 다수결법칙 방법 제시하고, 그 특성분석을 통하여 보다 효율적인 암호 시스템 적용이 가능함을 보여 주었다. We introduce the characteristic of a general cryptosystem and problems about a channel error-propagation in data communication, and then analyze a ratio of transmission errors about a stream cryptosystem with key-identification-codes and key-information-codes. In addition, new error recovery method based on majority-rules was designed and an experiment was carried out to estimate the effect of channel error-propagation. In pages, it showed that the method was very effective in cryptosystem design with channel errors.

정신분열증 환자의 출생과 계절과의 관계

김정기,장대식,김종길 大韓神經精神醫學會 1987 신경정신의학 Vol.26 No.3

In this study, to find out the seasonality of schizophrenic birth and to analyze the relationship between schizophrenic subgroups and their birth seasonality, we compared the monthly and seasonal birth distribution of 367 schizophrenic inpatients, admitted in the neuropsychiatric department of Maryknoll General Hospital from March 1982 to February 1987, to those of the general population as control group. And the monthly births of the subgroups classified according to the clinical subtype and course were also compared. The results of this study were as follows; 1) Comparing with the general population, the birth rates of schizophrenics were higher in November through March and the excess of birth rate during these months was 8.6%. In statistical analysis, there were significant excess of birth in January and significant deficit in June. And there were significant excess of birth in late autumn through early spring, especially in winter. The excess of winter birth rate was 4.6%. 2) In comparisions of the monthly births of each subgroups classified according to the clinical subtype and course (including 4 comparisions; paranoid type Vs. non-paranoid type, paranoid type plus schizoaffective Vs. the rest of the types, schizophrenia Vs. schizophreniform disorder, subchronic schizophrenia Vs. chronic schizophrenia), there were no statistically significant differences in any comparisions. Therefore we confirmed the seasonality of schizophrenic births that there was an excess of winter or spring births among schizophrenics but the hypothesis that seasonality of birth is associated with an increased risk for a subtype of schizophrenia was not supported.

청소년 Dextromethorphan Hydrobromide(?러미라) 남용6례

장대식,김정기 大韓神經精神醫學會 1986 신경정신의학 Vol.25 No.4

저자들은 1983년 1월부터 1985년 5월까지 러미라 남용으로 입원한 청소년 환자 6례를 증례 보고하고 이들의 러미라 남용의 양상과 이 약물에 의한 중독증을 비교 검토하였다. 보고된 6례의 환자들은 대부분 남자로서 그들의 최초 러미라 사용연령은 20.6세로 청소년기에 속했다. 이들은 하루 300내지 900㎎의 러미라를 처음엔 수일에 한 번씩 복용해 오다가 뒤에는 이틀에 한번 복용했었다. 이들이 처음 러미라를 복용한 동기는 대개 "친구의 권유에 의해서 "였으며, 그후 일상 생활의 스트레스나 권태감을 제거하거나 다행감을 얻기 위한 목적으로 계속 남용하여 1내지 3년간 지속하였다. 대부분의 증례에서 러미라를 복용후 다행감, 의식의 변화, 심한 정신운동성 항진, 지각, 사고, 판단의 장애등 정신증상을 경험했으며 , 매우 과량을 복용한 경우에서는 항콜린계 중독증상과 유사한 신체증상을 보였다. patterns of romilar abuse and intoxication symptoms. Of the 6 cases, 5 were males and their mean age of initial romilar use was 20.5 years. Their daily dosages of romilar were 300 to 900 ㎎, and at first they used it once in several days but later more frequently, daily or every other day. In most cases, their motivation for initial romilar use was 'by their friend's invitation' and thereafter they abused it continuously for 1 to 3 years to produce euphoria which allows the user to withdraw from the stresses and boredom of everyday reality. After the intake of romilar, most patients had experienced euphoria, altered states of consciousness, psychomotor activation. They also had experienced disturbances of perception, thought, and judgement. In extreme high dosage they revealed physical symptoms and sign similar to those of anticholinergic intoxication.

강판-콘크리트 구조 벽체-지지대 접합부의 거동특성에 관한 연구

김강식,김우범,이정민 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

An experimental and analytical study on the behavior of SC(steel plate - concrete) structure's wall-support joint for nuclear power plants was performed. Nine full scale specimens were tested with horizontal monotonic load, all acting in the same plane causing uni-axial moment on the SC structure's wall-support beam joint. The major focus relates to the identification of the behavior and capacity of the SC composite joint system. The effects of variations of the location of support, the thickness of steel-plate and the depth of support were studied. The horizontal force-displacement relationship, steel-plate strains, plate deformation, support strains were observed and analyzed in order to evaluate the behavior of the system.

시스템 결함 관리를 위한 소프트웨어 패키지 개발

김길용,고정국,윤재식,옥을석 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.55 No.-

최근 들어 컴퓨터의 사용 범위가 항공기나 우주선의 자동 항법 시스템, 발전소 제어 시스템 간은 응용 분야에까지 확장되고 있다. 이런 응용 분야에 사용되는 컴퓨터 스스템에서 발생하는 고장은 치명적인 인적, 재정적 손실을 야기할 수 있기 대문에 하드웨어의 고장 또는 소프트웨어 오류가 존재하는 경우에도 자신의 작업을 중단함이 없이 계속 정확하게 수행할 수 있는 시스템을 필요로 하다. 따라서 본 논문에서는 이러한 문제점에 대한 해결책으로 시스템이 동작하는 동안 발생하는 결함에 대한 원인을 분석하고 효과적인 해결 방안을 제시하는 보고서를 자동으로 작성함으로써 결함 탐지와 진단, 보고 기능을 수행하는 결함 관리를 위한 소프트웨어 패키지를 개발하였다. 결함 탐지 방법은 결함 조건 구성 형태에 따라 단일로그 활용방법과 다중로그 활용방법으로 구분되며, 기능 시험 결과 결함 관리 소프트웨어 패키지의 정확한 동작을 확인할 수 있었다. 클라이언트-서버 구조로 구현된 시스템 결함 관리 기능은 소프트웨어 기법 활용하기 때문에 추가적인 비용이 소요되지 않고도 기존 컴퓨터 시스템의 결함 관리 서비스에 활용될 수 있다. Nowadays, the application of computer is widely extending to many spheres such as a navigation system and power plant control system. However, the faults of computer systems in these fields may cause a loss of haman and financial resources, or a disaster, we need a system that can carry out their jobs through hardware errors or software faults. In this paper, as a solution for the problem described above, we developed a software package for fault management that performs fault detection, deagnosis, and reporting through analyzing cause of faults and generating a system fault report automatically. The fault detection methods are divided into two classes based on error log utilizing scheme of a fault analyzer : single log scheme and multiple log scheme. We accomplished a facility test results show that the software package can correctly detect faults. The results also show the usefulness of this package int system fault management. Because this package utilizes software scheme, there is an advantage that it can be used to provide a system fault management with existing computer systems without additional costs.

간 낭종을 동반한 성인 다낭신 환자에서 간 낭종의 감염 1예

정규성,서정철,주기산,김원식,임영국,정종훈,문철웅 朝鮮大學校 附設 醫學硏究所 1993 The Medical Journal of Chosun University Vol.18 No.1

Adult polycystic kidney disease(APKD) usually accompanies with renal and extrarenal manifestations and liver cysts are present in aproximately 30% of patients with APKD. Kidney cysts often accompany with hemorrhage, rupture, infection, however, liver cysts are usually asymptomatic and do not impair liver function. Rare complication of liver cysts in patient with APKD include portal hypertension with bleeding esophageal varices and hepatic failure with encephalopathy. But, in APKD patient, infection of liver cysts without infection of renal cysts is extremely rare. We report a case of infected liver cyst in a patient with APKD who has complained generalized abdominal pain and high fever which was confirmed by ultrasound and aspiration. The patient was treated successfully with repeated aspiration and systemic antibiotics.