• 대한지리학회지
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• 제28권4호
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• pp.356-378
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• 1993

본 논문은 도시산업구조의 경쟁력과 특화도, 그리고 그것의 변화특성에 관한 연구이다. 사례지역은 미국 Arizona의 42개 도시로서, 1970년부터 1990년까지의 9개 산업부 문을 대상으로 분석하였다. 본 언구에서 설정된 가설은 다음과 같다. (1) 1차 산업부문에 특 화된 도시들은 쇠퇴하기 쉬운 경향이 있다. (2) 도시의 규모는 산업의 다변화와 밀접한 관련 이 있다. 즉 도시규모가 클수록 산업 구성에 있어서 다변화되는 경향이 있다. (3) 대도시까 지의 거리는 도시산업의 다변화와 무관하다. (4) 도시들은 시간이 경과되면서 대체로 더욱 다변화되며, 그래서 도시특성이 상호간에 더욱 유사해진다. 이러한 가설들을 검증하기 위해 서 도시산업구성에 대한 클러스터분석(cluster analysis)을 통해서 1970년부터 1980년, 그리 고 1990년까지의 도시기능의 변화특성을 살펴보았고 도시기능과 산업구성상의 경쟁력이 관 계가 있음이 Arcelus가 변형한 변화, 할당모형의 분석을 통해서 확인되었다. 즉 1차산업(농 업, 광업)에 특화된 도시들은 경쟁력이 약해서 성장이 지체되는 경향이 나타났다. 특화계수 (coefficient of specialization)의 상관분석을 통해서는 산업특화 수준이 인구와 고용을 지표 로 한 도시규모와 밀접하게 연관이 되어 있어서 큰 도시일수록 산업구성이 다변화되는 것이 확인되었다. 그러나 대도시까지의 거리와 도시의 특화정도의 상관성은 약하게 나타났다. 1970년부터 1990년까지의 특화계수의 변화를 살펴보면, 시간이 경과되면서 도시들은 더욱 다변화하는 경향이 확인되었고, 이것은 결국 도시상호간의 산업구조상의 차별성을 약화시켜 서 서로 수렴되는 특성으로 나타난다.

• 대한지리학회지
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• 제30권3호
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• pp.311-323
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• 1995

본 연구에서는 종로구 국민학교의 입지와 대안적 학구안을 제시하고자 하였다. 연 구 방법은 GIS Network의 입지-배분 모델을 이용하였다. 본 연구는 학교 입지에 각 변인의 가중치를 고려하지 못하고 분석 단위를 동단위로 했다는 점과 학구 조정에 있어서 학생들의 분포를 도로상에 균등하게 분포시킴으로써 현실과의 차이점이 다소 생길 수 있는 문제점을 가지고 있음을 밝혀 둔다. 기존의 학군에서 평균 통학거리 8,568m, 최대 통학거리 16,804m 인데 반하여 수정된 최소 통학거리 학군에서는 평균 통학거리가 8,328m, 최대 통학거리가 16,182m로 나타났다. 그리고 통학안정성 중심의 조정 학군에서는 평균 통학거리가 8,517m, 최대 통학거리가 16,768m이었다.

• 한국조경학회지
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• 제34권6호
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• pp.22-38
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• 2007

Since 1990, urban areas have been expanded rapidly due to the concentration of the population and several development projects including large scale apartment complexes and residential developments. Due to these development projects, the quality and functions of ecosystems have been continuously degraded, regardless of public agencies' efforts introducing development index, guideline, and amendment of law for sustaining the quality of ecosystems. Substantial guideline and content cannot expect the sustainable maintenance of nation's natural resources. Recent improve this situation, ecological planning was introduced, but research data of environments and objective systems were not enough showing the limits. The purposes of this study were to reduce the urban sprawl caused by residential development plans for environment-friendly residential developments, to establish applicable ecological planning, and to suggest the land use plans that reduce adverse effects of developments to nature ecosystem.

• 천문학회보
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• 제37권1호
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• pp.99.2-99.2
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• 2012

혜성에서 방출되는 CH 분자는 핵에서 방출되어 태양 빛에 의해 분해되는 시간인 lifetime이 짧다. Lifetime이 짧은 분자는 모든 energy state로의 천이가 충분히 일어나 안정된 상태인 fluorescent equilibrium상태에 도달하기 전에 분해되어 버리기 때문에 혜성 속의CH의 특성을 파악하기 위해서는 Time-dependent calculation이 꼭 필요하다. Time-dependent calculation 은 CH 분자가 핵에서 방출된 후 시간에 따라 변하는population을 계산함으로써 각 혜성의 조건에 알맞은 CH model을 얻을 수 있어 혜성에서 방출되는 분자들을 연구하기에 적합한 방법이다. 우리는 BOES로 관측한 Machholz(C/2004 Q2), 103P/Hartley혜성을 포함한 Hyakutake (C/1996 B2)혜성과 Austin (1990V)혜성의 고분산 분광자료를 이용하여 Time-dependent calculation 을 실시하였고, 그 결과를 소개하고자 한다.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 2001년도 추계학술대회 및 정기총회
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• pp.35-36
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• 2001

According to the recent epidemiological data, the numbers of patients of Reumatoid Arthritis(RA) in the world are reported to be 350mi11ion and 700,000 in the world and in Japan, respectively For the treatment of RA, NASIDs as the first choice drug have been widely used worldwide, and more than 50 NSAIDs have been in market up to today in Japan. Early 1990s, DMARDs as the new drug for RA treatment came into market, and the number of DMARDs has been increased every year. These drugs are recognized to have several advantages in treatment of RA, however, disadvantages are also reported, i.e., (1) high incidence of side effects, (2) high non-responder population, (3) decreased efficacy in chronic treatment, and (4) slow starting of the efficacy. For example, Methotrexate which has been widely used as the immunosuppressant has been recently used for treatment of Reumatoid. However, this drug has several disadvantages such as 60-70% improvement of the disease, 80% incidence of side effects, and 2-4 weeks to recognize the efficacy after treatment. In addition to these two.

• 한국안전학회지
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• 제5권1호
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• pp.77-81
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• 1990

In the event of fire, the tendency of over­buildings and high­building resulted from the concentration in population in cities causes great losses of human lives and property. Man is able to prevent fire itself from taking place on his own efforts. One of fire preventions at high­buildings is to Survey the environmental situations around the constructions from the beginning, and when the construction is going on, it is indispensable to install appropriate water­proof dampers with all sorts of equipments. Hence, lots of the owner's investment of the buildings in fire prevention facilities is necessary and, so is constructions in agreement with every regulations.

• 한국농촌건축학회논문집
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• 제5권2호
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• pp.52-61
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• 2003

It is to be profound that the population in rural area has been decreased, as a greate number of people have moved to urban area, in accordance with rapidly civilization in Korea. In 1990's years, it is become to as the social problem. As a result, many elementary schools in rural area were to be closed. Closed school facilities were used as a community facilities in rural area, but that reusing rates and method is not systematic. A decline in the work of construction is need to involve with the interior and remodeling. The purpose of this study is to suggest the effective employment and using methodology as a community facilities of closed school in rural area.

• 대한간호학회지
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• 제20권1호
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• pp.5-15
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• 1990

The purpose of this study was to identify the degree of family function and to determine factors influencing family function. The subjects for this study were 451 adults and high school students among the general population from J city. Data were collected by questionnaire from Sept. 1 to Nov. 30, 1989. The measurement tool was the Family Function Questionnaire(APGAR) developed by Smilkstein. Data were analysed by statistical methods including Mean, S.D. t-test and ANOVA. The following results were obtained : 1. The mean Family APGAR score was 5.70$\pm$0.11, in a range from 0-10. 2. Scores from 0 to 6, which fall into the dysfunctional family range, were recorded for 266 families(59.6%) 3. Significant variables among general characterisics influencing family function were age, sex, marital status, educational levels. monthly income and occupation(p＜.001). 4. Significant variables among family characteristics influencing family function were family life cycle (p＜.01), utilization of family resources(p＜.01) and family atmosphere( p＜.001).

• Journal of Preventive Medicine and Public Health
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• 제25권4호
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• pp.357-373
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• 1992

After medical insurance came into effect in Korea, health care system has undergone tremendous changes. Changing patterns of newly established clinics is one of them. To investigate changes and trends, a total of 10,184 clinics which were newly established from 1981 to 1990 were analysed. Data were obtained from the file of contracting medical facilities of the Federation of Medical Insurance Societies. The proportion of newly establishied clinics has increased gradually, so that they amount to 13% of the total medical facilities in Korea. Meanwhile, the number of newly established medium-size hospitals and general hospitals have decreased. The number of newly established clinics per 100,000 populations has increased in the all areas, but the rate of increase has decreased in the cities except in 6 major cities in 1990. The rate of increase in newly established clinics surpasses that of population increase. This study has identified the trend of young physicians' early driving into their solo medical practice than before. This indicates chance of the medical specialty training nowadays toughen due to the limited openings in residency programs. However, the sex ratio of physicians at newly established clinics has not changed. The decreasing tendency to open medical practice without beds and the increasing size of clinics are found in this study(The size has been measured in terms of medical manpower, of beds, and of medical equipment in this study). Two thirds of general practitioners have opened their clinics without beds, although such trend has been less in the case of specialists. All three indicators show increasing size, especially in the case of rural clinics. However, among them, the number of medical equipments has increased most significantly from 8.9 items in 1981 to 12.9 in 1990.

• 한국환경보건학회지
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• 제23권4호
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• pp.73-81
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• 1997

Diphtheria was the world-spread, respiratory infectious disease in the past. But after developing the diphtheria toxoid, diphtheria vaccine, composed of diphtheria toxoid, is generalized, so prevalence of diphtheria is sharply dropped. But diphtheria is come back in NIS(New Independent States) in 1990s. It is believed that recurrence of diphtheria is mainly due to shortage of protective diphtheria antibody titer in adults. And it is related to 70% prevalence in adults, not in children. Considering this changing environment, this study was designed to research the diphtheria antibody titer of whole population and existence of titer difference by sex. Also it was studied whether ELISA has fitness as determination method of diphtheria antibody titer compared with neutralization method on microcell culture. This study was done to 277 samples of three hospitals in Seoul area, and sera was tested by neutralization method on microcell culture and ELISA method. The results of this study were as follows 1) Of this studied population, 31.05% had an antibody titer below the protective level (<0.01 IU/ml), 40.79% had a titer of a relative degree of protection (0.01-0.09 IU/ml) and 28.16% had a reliable degree of protection ($\geq$0.1 IU/ml). Therefore, 68.95% had a basic protective antibody titer level. 2) 20-40 age group showed the lowest diphtheria antibody titer among the studied population. 3) GMT of diphtheria antibody titer was the highest in the children. But, after child period, GMT was fallen. Standard deviation value was the lowest in older group. 4) Protective level of diphtheria antibody titer of male was slightly higher than female (70.94% vs 66.66%). But this difference was not statistically significant. 5) Diphtheria antibody titer by ELISA method was wholly higher than by neutralization method on microcell culture. Compared the two results by ELISA and neutralization, the regression coefficient was 0.38. And in titer, which was obtained by ELISA method, false-positive results was abundant.