• The Korean Journal of Applied Statistics
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• v.4 no.2
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• pp.137-148
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• 1991

This paper describes the design of sample of the survey on the trend of house prices in city areas. The purpose of this research is to increase the precision of house price index in 39 cities and to provide with an accurate house price indes. The sample is selected in the stratified two stage sampling. In chapter 2, review and discussions are given on the sample design now in use. In chapter 3, we describe the sample size and the stratification, the house price index and error, and the substitution of sample. Finally we consider on problems of the sample design and some alternatives to solve them.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1987.05a
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• pp.11.3-12
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• 1987

삼출성 중이염은 소아연령군의 이비인후과질환중 유병율이 가장 높은 질환의 하나로 1867년 Politzer가 최초로 기술하고 치료법을 소개한 이후 그 병인 및 치료법이 다양하게 연구 개발되어 왔으며 1950년대 및 1960년대 electroacoustic impedance unit의 발전에 따라 진단법에 많은 변혁이 이루어졌다. 연자들은 1981년 1월1일 부터 1986년 12월31일까지 삼출성 중이염으로 중이내 통기관유치술 및 고막천자를 시행한 15세 이하의 290명의 환자를 대상으로 tympanogram의 양상 및 술전 기골도차를 조사하여 중이내 삼출액의 유무 및 점성도의 예측도에 대하여 살펴 보았다. Tympanometric peak pressure (T. P. P.) 가 -50mm$H_2$O 미만이며 compliance가 0.4 c.c.미만인 영역을 B영역으로. T.P.P.가 -50mm$H_2$O 미만이며 compliance가 0.4 c.c. 이상인 영역을 C영역으로 정하였을 때 중이내 삼출액 유무의 예측도는 B영역이 87.5%. C영역은 81.48%였으며 삼출액이 장액성일 경우의 예측도는 B영역이 24.51%, C영역이 22.72%이었고, 삼출액이 점액성일 경우의 예측도는 B영역이 70.39%, C영역이 54.54%이었다. 연령을 15세 - 7세군과 6세이하의 군으로 세분하였을 경우에도 비슷한 결과를 얻었다.

• 발명특허
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• v.6 no.12 s.70
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• pp.23-25
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• 1981

공업소유권제도를 설립하기 위하여 안간힘을 쓰고 있는 중공은 1980년 3월에 세계지적소유권기구(WIPO)에 가맹하고 그 준비과정에서 찬반양론이 엇갈려 아직도 답보상태에 있다. 현재 중공에서는 발명의 소유권을 인정하는 이른바 특허제도는 없으나 발명장려조령 및 상표관리조령과 기술개선보수법등으로서 꾸려나가고 있다. 그 체제는 발명이나 과학기술성과는 국민의 공통재산으로서 누구나 무상사용하되 취잉기관은 우리나라의 특허청에 유사한 전리국과 국가과학기술위원회에서 담당하고 있다. 이같은 체제가 중공내 기업의 자주적이고 적극적인 신기술창조에 저해요인이 된다 하여 특허제도도입을 서두르고 있으나 여의치가 않은 것 같다. 중공이 준비하고 있는 현단계의 관련기관과 제도체제 및 그 양상은 대체로 다음과 같다.

• Journal of The Korean Society of Grassland and Forage Science
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• v.5 no.2
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• pp.106-110
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• 1985

This trial was carried out to find out the optimum ridge and seeding rate for the seed production of Festuca arundinacea S. (variety Alta). It was composed of three ridge level (12, 18 and 24cm) and four seeding rates (10, 15, 20 and 25kg/ha) in a split-plot design with 4 replications. The experiment lasted from September 1979 to October 1981. 1. The beginning of heading state was May 12 and the date of full flowering stage was June 2. The optimum stage for the seed harvesting of Festuca arundinacea was about 43 days after beginning of heading stage. 2. The number of panicles were 157 per square meter from the best treatment 18cm ridge with 15kg seed/ha. And the 1000 grain weight was 2.79g for the treatment 12cm ridge with 10kg seed/ha. 3. The average seed yield for two years was 681kg/ha and the largest 831kg/ha for the treatment 18cm ridge with 25kg seed/ha. 4. the average germination rate of the harvested seed was 90.7 percent, and it showed a little higher germination rate from the lower level of seeding rate. 5. The average total DM production with two cuttings of aftermath was about 6715kg/ha. According to the increasing seeding rate and narrowing the ridge, DM yield was higher.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.17 no.2
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• pp.59-63
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• 1981

For the purpose of surveying accuracy of the position fix and local fluctuation of Omega signals in south coast of Korea, the author observe continuously the phase difference of the A-C pair and A-E pair form December 1, 1980, to February 28, 1981, at Cheju(33$^{\circ}$31'.0N, 126$^{\circ}$31.9E) and Busan(35$^{\circ}$7'.9 N, 129$^{\circ}$6'. 3 E). The analyzed results are as follows: 1. Omega signals at Cheju and Busan are positive correlation. Mean value of coefficients during all measured time is 0.70 with A-C pair and 0.75 with A-E pair. 2. Range of mean value of difference between the measured PPC at Cheju and Busan is 17.7~21.3 cels with A-C pair and -2.9~2.0 cels with A-E pair. 3. In case of using the differential Omega at Cheju and Busan, mean value of total errors of the position fix is 1.52 miles and its standard deviation is 0.21 miles.

• Journal of Chest Surgery
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• v.29 no.7
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• pp.734-740
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• 1996

The relative importance of various factors influencing the prognosis and survival in the treatment of thymoma is still controversial. Sixty ave patients operated on for thymoma from Jan. 1981 to Dec. 1994 were evaluated, 28 patients (43.1 %) with myasthenia gravis and 37 patients (56.9%) without. Masaoka staging revealed stage I disease in 28 patie ts(4).1%) , stage ll in 1) patients(20.0%), stage 111 In 22 patients(33.8%), stage IVa in 1 patients(1.5%), and stage IVb in 1 patient(1.5%). There was no operative mortality. A complete resection was performed in 48 patients (73.8%) patients, associated in 10 patients (15.4%) with postoperative adjuvant treatment(radiotherapy 5; chemotherapy 1: radio- and chemotherapy 4). Thymomas were found to be predominantly of the epithelial type in 16 patients(24.6%), predominantly Iymphocytic type in 18 patients(27.7%), and mlxed in 22 patients (33.9%). The overall 5- and 10-year survival rates were 87% and 82%, respectively, Factors indicating a poor prognosis included local invasion, incomplete excision, thymic carcinoma, advanced staging and myasthenia gravis. The de- gree of tumor invasion turned out to be the main prognostic factor, and treatment should be planned ac- cordingly. The prognosis is best predicted by the stage of the tumor as determined intraoperatively and is poorer in patie ts with incomplete resection than in those with complete resection of the thynoma. No recurrence developed In patients with stage I disease.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.19-20
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• 2013

겨울철에 우리나라 서해 및 서해안은 북서계절풍이 지배적이다. 지속성이 강한 계절풍은 선박의 안전운항과 기상재해에 큰 영향을 미친다. 이 연구에서는 30년간(1981-2010년)의 장기간의 데이터를 이용하여 우리나라 서해안에 있어서의 겨울철 계절풍의 변화를 분석하였다. 얻어진 결과는 다음과 같다. 우리나라 서해안의 인천, 군산 및 목포에 있어서의 풍속은 12월, 1월 그리고 2월에 공통적으로 시간의 흐름과 함께 약해지는 경향을 보인다. 풍속이 약해지는 정도는 특히 군산에서 크고 인천과 목포에서는 서로 비슷하다. 우리나라 남해안에 위치하는 통영의 경우는 시간의 흐름과 함께 오히려 풍속에 강해지는 변화 특성을 보여 서해안의 계절풍 변화와는 큰 차이를 보인다. 인천, 군산 및 목포 중에서 풍속이 가장 강한 곳은 목포이고, 그 다음은 군산, 인천의 순이다. 우리나라 서해안의 계절풍이 약해지는 것은 겨울철의 전형적인 서고동저형 기압배치의 변화 등에서 그 원인을 찾을 수 있을 것이다.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.16 no.2
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• pp.75-81
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• 1983

The studies on the age determination of the spottybelly greenling, Agrammus agrammus, caught in the shore of Tongbaeksom were done by the articulative fossae of the vertebra through a stero-dissecting microscope. For determining annunli the vertebra had been cleaved lengthwise in the dorsoventral direction. Half of the vertebra had been fixed on Canada balsam with the flat side directed upwards. The alternation of two zones on the vertebra was observed. One is wide and light-colored, and the other is narrow and dark-colored. The annual layer, where the dark-colored zone shifts to the light-colored one, was appeared extending from July to August once a year. Study of the growth of A. agrammus was carried out by the method of back calculation from the vertebra.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1982.05a
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• pp.14.1-14
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• 1982

The Clinicostatical and Bacteriological studies on the otofuruncles were carried out on 297 pts who had visited OPD of ENT depart of St. Benedict Hospital during the 2 years from Jan. 1980, Until Dee, 1981. The results obtained were as follows; 1) The otofuruncle ratio to the whole ENT visiting cases was 27,149:991. (3.6%) 2) The age distribution showed the highest incidence in 0-10 years. (63%) 3) The ratio, male vs female was 180:133 (1.3:1). 4) The seasonal incidence showed the highest incidence in July and August. 5) The side of otofuruncle was left side (56.7%). 6) The site of otofuruncle was posterior (21%), anterior (19%), multiple (13%). 7) Average duration of illness on first visiting was 4.7 days. 8) The numbers of cases who performed I&D was 103 pts. (35%). 9) The most common causative organism was Staph. aureus (88%). 10) Average duration of treatment was 5.3 days.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.23 no.4
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• pp.177-183
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• 1987

The catch by the set net fishery from 1971 to 1985 were analyzed in order to reveal its fluctuation characteristics. Generally, the catch increased from 16,787M/T in 1971 to 84,103M/T in 1985 and showed maximum in 1979 with 99,475M/T of catch. This trend was mainly related to the higher production of file fish which accounts for 64% of the total catch in 1979, and the change of catch statistical classification according to the revising of fishery law in 1976. It was also closely related to the variation of the sea water temperature in coastal area. The main fishing period of the set net fishery appeared from October to November. Catch of the set net fishery was led by that in the southern coast before 1976 and by that in the eastern coast from 1977 to 1980, the tendency changed irregular from 1981. Three groups of fishes could be distinguished by principal component analysis of the annual catch. A group showing steady decreasing tendency was composed of the fishes such as whiting, sand fish, hair tail and anchovy. The another group composed of small alaska pollack, round herring, goby, gizzard shad, sand lance and file fish revaled an increasing tendency. The other fishes did not show any annual tendency.