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시뮬레이션을 이용한 광주광역시 지하철 운영계획에 관한 연구
전태웅,박수희,이항진 조선대학교 환경공해연구소 1999 環境公害硏究 Vol.15 No.2
This study is concerned with the operation planning in Kwang-ju subway. The operation planning in subway that one is electronic car operating interval time, one other is the number of trailer car. The evaluation criteha of alternatives is average queue time of passenger and the degree of congestion in the trailer car. The alternatives of operating planning and the experiment of alternatives is presented in this paper by simulation with ARENA. The results of experiments, electronic car operating interval time is 3.5 minutes and the number of trailer car is four in 2004 year.
전태웅,박수희,이항진 조선대학교 경영경제연구소 1999 經營經濟硏究 = Management and economics research Vol.22 No.2
This study is concern to determine production capacity for rack production system using simulation. In rack production system, generally, the production capacity is determine by the number of operatior and the time of operator, that is decision parameters. The fourth-four alternatives that is eleven alternatives to the number of operator and four alternatives to the quaranty of production is simulated in this study. The overhead cost is decision criteria in the selection to alternatives.
세포질내 정자주입법(ICSI)에 있어서 정자흡입 및 난자내 주입방법에 관한 연구
이택후,김항진,송건호,김대근,전상식,박윤규,서태광,전병균,류은경,이은숙,문진수,김광철 경북대학교 의학연구소 2000 경북대학교병원의학연구소논문집 Vol.4 No.1
Study on Method of Sperm Aspiration and Injection into an Oocyte in Intracytoplasmic Sperm Injection(ICSI) Immobilization of spermatozoa prior to intracytoplasmic sperm iniection(ICSI) sometimes results in crooked tail and this makes it difficult to aspirate sperm into an injection pipette tail first. Head-first sperm aspiration into an injection pipette avoid this problem due to the bigger size of the sperm head. The effect of head or tail-first sperm injection into an oocyte on fertilization cleavage, percentage of grade I embryos and development to blastocyst stage in ICSI program has been studied. A single living immobilized spermatozoa from oligoasthenozoospermic patient was injected into an oocyte head-first or tail-first according to the treatment. Eighteen hours after microinjection, oocytes ware inspected for survival and fertilization Fertilized oocytes with two pronuclei were cultured in 30μl drop of mHTF supplemented with 10% heat-inactivated follicular fluid(FF) at 37℃. On day 2. embryo transfer was performed with cleaved embryos. The remaining 2-8 cell stage embryos were co-cultured with BRL cells in mHTF + 10% FF for 72 hours and the developmental stage was observed. The data were analyzed by Analysis of Variance. A total of 164 oocytes from 36 cycles were assigned to earth treatment and ICSI was performed(88 head-first, tail-first). The rates of normal fertilization were 81.8% and 76.3% for head-first and tail-first, respectively. Of the fertilized oocytes, the percentage of cleaved embryos and the percentage of grade 1 embryo among cleaved embryos were 88.9% and 68.8%, 93.1% and 74.1% for head-first and tail-first, respectively. Of the 2-8 cell embryos cultured, 44.4%(16/36) and 50.0%(10/20) for head first and tail first, respectively developed to blastocyst stage. There were no differences in fertilization, cleavage, rates of grade 1 embryos, and development to blastocyst stage. In conclusion, head-first or tail-first sperm injection into an oocyte in ICSI program does not affect fertilization and subsequent embryo development to blastocyst stage in vitro.
남녀 중학생의 체육학습 태도에 관한 연구 : 인천광역시 소재 중학생 대상
김경호,김형룡,천광호 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3
This research is designed to provide basically necessary for the sake of promoting the normalization of physical- education classes and shedding light upon the actual conditions of operating physical- education at school by making an analysis of middle-school boys and girls at school. 1. The understanding of the objectives of physical education. In regard to the enhancement of sociality, improvement of physical strength, understanding of exercise, function of exercise, one's health brought about by their physical education, boy-girl combined classes are more excellent than the rest, and as for the understanding of the pursuit of life, boys are better than girls. Concerning the understanding of exercise, physical education is said to be of help in the sequence of boy-girl separated co-ed schools. 2. The attitude of taking part in physical education activities. The survey has it that warning up and finishing exercise are sincerely practiced, While students are little impressed by the safety of facilities and instruments in the physical-education classes, both boys and girls are highly satisfied with the explanations and demonstrations of physical education teachers. 3. The attitude of tolerating the evaluation of physical education, Students say that they are under a lot of notice in the beginning of each term, which is designed to let them enhance the justice and confidence of the evaluation of practical training, and that they are not satisfied with a variety of evaluation and the evaluation of practical training in the field of physical education.
敎養課程으로서의 「人口와 未來」開設 및 運營에 관한 實驗硏究 : 梨花女子大學校를 中心으로
康宇哲,徐洸善,田贊和,金在恩,蘇興烈 이화여자대학교 한국문화연구원 1979 韓國文化硏究院 論叢 Vol.33 No.-
This is a research report of the research that led to the opening of a population education course at Ewha Womans University. The research itself may be divided into the following four parts: planning for the research ; preparatory work for a population education course; opening of a population course; and evaluation of the population course. In the first stage of the research, the work, as usual, consisted of organizing the research team, setting up the research objectives, planning the research schedule, etc. The project began in the Fall of 1974, and concluded in the Fall of 1978. In the second stage of the research, the work was carried out for the preparation of a course in population education. Several sessions of faculty conference, in which more than 40 professors from various fields of specialization participated, were held in order to determine the specific objectives of the proposed course, to draw up a syllabus, and to prepare for a textbook for the course. When a rough sketch of the syllabus, and the contents of the course was made a student group was organized to examine and evaluate it. In the third stage of the research, a population education course titled "Population and Future" was opened as an elective course in the general education curriculum. This was in the Fall of 1875, and the course remained open every semester until now. An anthology with the same title as the course itself was used for reading, and the teaching was carried out as a team teaching by a team of 6-9 professors. In the fourth stage of the research, an evaluative study was taken up in order to evaluate the course with regard to its structure, textbook, teaching method, and its contents, as well as to assess the effectiveness of the course on terms of the students' change in their cognitive and emotive or attitudinal response to population problem.
'부로일러' 飼料의 油脂 添加에 대한 飼養 試驗과 經濟性 分析에 관한 硏究 (第2報) : 高熱量 水準 飼料에서
吳世正,金春洙,權恒基 건국대학교 1972 學術誌 Vol.13 No.1
The experiments were supported jointly by National Renderers Association, Far East Office and Korea Mixedfeed Association, and were conducted in three different poultry farms of In-san, Kun-kuk and So-shin in or vicinity of Seoul, Korea. The objectives were to demonstrate the economy and the nutritional value of using tallow as a feed ingredient in formulating the high energy broiler rations. It was also to determine the dietary level of tallow which is most feasible for the economy of broiler production in Korea. Per this purposes, the feeding trials were set fur four different dietary levels of 0, 3, 5 and 7 percent tallow, and the rations were formulated to meet all the known nutritional requirements for the optimum broiler production. The dietary energy levels were increased with increasing the dietary levles of tallow, and the levels of dietary protein were also increased accordingly to maintain constant theoretic calorie-protein ratios of 62 for the starter and 70 for the finisher rations. During the course of experiments, the comparative effects of four different rations were made upon weekly weight, feed consumption and fried convection. Other are studies on losses, carcass quality and finally upon the economy of broiler productions.
보릿짚의 수분함량 및 수확시기가 소각시 대기오염물질 발생에 미치는 영향
고지연,강항원,이재생,김춘송,박성태,김복진 한국환경농학회 2004 한국환경농학회지 Vol.23 No.2
영남지방 벼-보리 이모작답에서 가장 널리 시행되고 있는 보릿짚 처리방법인 소각이 대기환경에 미치는 영향을 소각시 발생하는 온난화가스, 대기오염가스 및 분진발생량을 중심으로 살펴보았다. 보릿짚 소각시 온난화가스 발생량은 CO₂376.8, CH₄ 1.56, N₂O 0.05 kg/10a 로서 CO₂의 발생량이 가장 많았으며, 대기 오염가스 중에는 유기물의 불완전 연소시 배출되는 CO발생량이 28.8 kg/10a로서 가장 많았다. 그 외 SO₂ H₂S, NH₃, NO등의 질소 및 황 함유 유해가스도 소량 발생되었고 발생된 PM 10 분진의 대부분은 인체에 미치는 영향이 PM 10보다 큰 PM 2.5로 이루어져 있었다. 또한 수확시기가 빠르거나 수분함량이 높은 보릿짚일수록 온난화가스 및 대기오염 가스의 발생량이 증가하고 소각 연기내 PM 10 분진중 PM 2.5의 미세분진 비중이 높았다. 수확적기로 알려진 출수 40일 이후의 보릿짚은 출수 후 40일된 보릿짚 소각시 발생하는 대기오염가스 발생량과 큰 차이가 없었다. This study was carried out to determine impacts of burning of barley straw produced from rice-barley double cropping paddy field on air quality by investigating emissions of greenhouse gases (CO₂, CH₄ and N₂O), air pollution gases (CO, SO₂, H₂S, NH₃ and NO) and particulate matters (PM 10 and PM 2.5). When the barley straw at a rate of 4.5 t/ha was burned at open status, the emitted GHGs amounts were CO₂ 376.8 kg/10a, CH₄ 1.56 and N₂O 0.06. The amount of CO emission was the largest among air pollution gases. These results showed that the range of 45~55% of total C in barley straw was emitted as CO₂-C, followed by CO-C (6.4~5.9%) and CH₄-C (0.5~0.7%). As far as moisture content in barley straw is concerned, the higher moisture content that the barley straw contains, the larger amount of air pollution gases and the higher portion of PM 2.5 in PM 10 were emitted when it burned. In case of harvesting time of barley straw, emission amounts of greenhouse, air pollution gases and PM 2.5 portion in PM 10 had tendency to increase when earlier harvested barley straw was burned.
소수계 유역 인공습지에서 식생 밀도 차이에 따른 영양염류 제거효율
고지연,강항원,이재생,김춘송,Sakadevan,K.,Bavor, H. J. 한국환경농학회 2003 한국환경농학회지 Vol.22 No.4
호주 시드니 인근 도·농 복합 소도시로부터 발생하는 비점오염원을 처리하기 위하여 설치된 Plumpton park와 Woodcroft park 인공습지의 처리효율을 살펴본 결과, 수생식물의 밀도가 증가하고 식생이 안정된 Plumpton park 인공습지에서 T-P의 26.2%, T-N의 38.3%, 식생분포가 안정적이지 않은 Woodcroft park에서 14.0%와 20.2%가 각각 제거됨으로서 식물체 근권 미생물에 의한 T-P 및 T-N의 제거 효율이 상당히 큼을 알 수 있었다. 또한 T-N와 T-P에 비하여 NH₄-N, NO₃-N, PO₄^(-3)의 제거율이 높았던 것은 무기태 형태의 영양염류가 식물 및 미생물에 더 쉽게 이용되었기 때문으로 생각된다. 이상의 결과로 볼 때 인공습지에서 식물체와 근권 주위 미생물에 의한 염류제거는 인공습지가 설치한지 오래되었을 때도 효과적이었고, 또한 인공습지는 무기태 영양염류의 제거효율이 더욱 높았으므로 무기화학비료 등의 용탈이 일어나기 쉬운 농경지 비점오염원으로부터 발생하는 수질오염의 개선에 이용할 수 있는 경제적이고도 효율적인 system으로 고려되었다. This study was conducted to evaluate effects of 2 constructed wetlands with different vegetation states (Plumpton park wetland and Woodcroft park wetland) for reducing non-point source pollution from small watershed consisted of residential and agricultural area in suburban district of Sydney, Australia. The total nitrogen and phosphate removal efficiency of Plumpton park constructed wetland, composed of stable and dense vegetation, were 38.3% and 26.2% and Woodcroft park constructed wetland having still poor vegetation due to the short time to settle down transplanted plants after construction, showed relatively low removal efficiency of 20.2% and 14.0%. The removal efficiency of inorganic nutrients such as NH₄-N, NO₃-N, PO₄^(-3) were higher than total nitrogen and phosphate because plants and microorganisms in rhizosphere of constructed wetlands took up inorganic nutrients shortly. According to the type of wetland inflow, the nutrients removal efficiency of storm water flow was lower than base flow.
고정환 ; 윤옥현 ; 박홍기 ; 전기환 ; 김상민 ; 김학민 ; 박희룡 김천대학교 1999 김천대학교 논문집 Vol.20 No.-
The social education that is provided for the people will be an important part of the national growth in the 21 century. This study was taken to present the desirable direction that Kimcheon College Continuing Education has to make progress as a central organization with perceiving the importance of continuing education for the Kimcheon citizen. To achieve the objective of the study, examined a sample of 592 citizen and students from Kimcheon City and Kimcheon College. The survey revealed the following results : 1. Offer the effective operation of education policies and curriculums. 2. Perform the role of foreign language education center. 3. Introduce the saving credit system. 4. Operate the special lectures for the students of the high school graduating class after the national scholastic achievement test for university and college entrance. 5. Suppert the special skills education for high school students after-school hours. 6. Administer the new employment program. These results showed the desirable direction that the Kimcheon College Continuing Education has to take some actions for the Kimcheon citizen.