• Journal of Preventive Medicine and Public Health
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• 제55권2호
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• pp.144-152
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• 2022

Objectives: This study aimed to identify the social and policy determinants of coronavirus disease 2019 (COVID-19) infection across 23 countries. Methods: COVID-19 indicators (incidence, mortality, and fatality) for each country were calculated by direct and indirect standardization. Multivariable regression analyses were used to identify the social and policy determinants of COVID-19 infection. Results: A higher number of doctors per population was related to lower incidence, mortality, and fatality rates of COVID-19 in 23 countries (β=-0.672, -0.445, and -0.564, respectively). The number of nurses/midwives per population was associated with lower mortality and fatality rates of COVID-19 in 23 countries (β=-0.215 and -0.372, respectively). Strengthening of policy restriction indicators, such as restrictions of public gatherings, was related to lower COVID-19 incidence (β=-0.423). A national Bacillus Calmette-Guérin vaccination policy conducted among special groups or in the past was associated with a higher incidence of COVID-19 in 23 countries (β=0.341). The proportion of the elderly population (aged over 70 years) was related to higher mortality and fatality rates (β=0.209 and 0.350, respectively), and income support was associated with mortality and fatality rates (β=-0.362 and -0.449, respectively). Conclusions: These findings do not imply causality because this was a country-based correlation study. However, COVID-19 transmission can be influenced by social and policy determinants such as integrated health systems and policy responses to COVID-19. Various social and policy determinants should be considered when planning responses to COVID-19.

• 한국산림과학회지
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• 제103권2호
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• pp.196-202
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• 2014

본 연구는 팥배나무의 열매에 대한 우수개체 선발을 위한 기초자료를 얻고자 11개 집단에서 총 107개체를 선발하여 선발목 열매의 형태적 특성 변이를 조사하고 주성분 분석과 군집분석을 실시하였으며 열매 특성에 의한 선발효과를 추정하였다. 주성분 분석 결과, 제4 주성분까지 75.4%의 설명력을 나타냈으며 군집분석에서는 4 그룹으로 구분되어짐을 알 수 있었다. 열매 수확량과 관련된 특성인 열매 폭과 길이 그리고 송이 당 수확량 특성을 대상으로 광교산1, 2와 덕유산7 그리고 마니산 29, 30 등 5개체의 우수개체 후보목을 선발하였다. 선발개체 5본에 대해서 전체 평균 형질과 비교하여 선발효과를 추정한 결과, 열매 폭은 122.8%, 열매 길이는 115.5%, 송이 당 수확량은 182.7%의 선발효과를 추정할 수 있었다.

• 융합보안논문지
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• 제17권1호
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• pp.89-100
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• 2017

이 연구는 공항 특수경비원들의 직무자원이 직무태도 및 이직의도에 미치는 영향을 분석하는데 있다. 연구의 분석을 위하여 인천과 김포, 청주, 대구지역 공항을 중심으로 4곳의 공항 특수경비원을 모집단으로 설정하였으며, 설문지는 비확률 표본 추출법 중 유의표집법을 통하여 300명을 대상으로 배포하였다. 조사기간은 2016년 7월부터 10월까지 약 4개월간에 걸쳐서 실시하였으며, 설문지는 회수되지 않거나 극단치가 있는 40부를 제외한 총 260부를 최종 데이터로 활용하였다. 데이터 분석을 위하여 이 연구에서는 SPSS 18.0 통계패키지를 활용하였으며, 영향 관계는 다중회귀분석을 통하여 가설을 검증 하였다. 분석결과, 직무자원은 직무태도에 통계적으로 p<.01 수준에서 정(+)의 영향을 미치는 것으로 나타나 가설이 채택되었다. 그리고 직무자원은 이직의도에 통계적으로 p<.001 수준에서 정(+)의 영향을 미치는 것으로 나타나 가설이 채택되었으며, 직무태도도 이직의도에 통계적으로 p<.01 수준에서 정(+)의 영향을 미치는 것으로 나타나 가설이 채택되었다. 또한, 직무태도는 직무자원과 이직의도 간의 관계에서 통계적으로 p<.05 수준에서 정(+)의 영향을 미치는 것으로 나타나 매개역할을 할 것이라는 가설은 채택되었다. 이러한 연구결과를 통하여 공항 특수경비원들의 직무자원과 직무태도 및 이직의도 간의 관계에서 직무자원은 중요한 변수로 작용한다는 것으로 나타났다.

• 농업과학연구
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• 제20권1호
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• pp.88-101
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• 1993

This study is aimed at evaluating the present management status of the rural special production area development projects and identifying managerial problems to propose new direction of the political countermeasures for the projects. In the con text of implementing the five year's economic developent plans for the past three decades, agricultural production and farm-household income have also been grown rapidly. However the income gap between rural and urbarn laborer, as an internal problem, has widened during the decades and the UR problems concerning free trade of agricultural products, as an external problems, are now agonizing the small-holder farm economy in Korea. The internal and external farm problems could be solved through improvement of agricultural structure and provision of off-farm jobs for farm household income increase. As a part of the off-farm income sources, the rural special production area development projects have propelled by the government throughout the country. The main problems to be solved for the successful implementation of the projects are as follows : 1. Present loan amount by the financial fund was estimated at 6-7% of the total installation costs required. To expand and implement the project successfully, enough financial credit support with favorable terms and conditions have to be considered by the government. 2. The operation patterns of the special production area development project should be recommended from the view point of cooperative and private operation to maximize farm household incomes including profits, marketing charges and dividens. 3. Improvement of the marketing channel of the products and marketing information through TV program and other mass communication should be implemented strongly to promote marketsales by the financial supports of the government. 4. In connection with the off-farm income increase, the population migrating to urban area in outside Chungnam province equivalent to 10-12 thousand persons with age of 20-49 years should be taken into account politically to be employed in the projects in the province. 5. Surplus farm labors should be created by means of improvement of agricultural structure including large farm management with farm mechanization and job opportunities have also to be provided in connection with the rural special production area development projects. The two imminent subjects are the prerequisites to increase off-farm incomes for the farmers living in Chungnam province. 6. Required credit supports for investment and operation costs of the projects should be taken actions by the government.

• 한국인구학
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• 제20권1호
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• pp.27-46
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• 1997

일반적으로 우리나라의 인구 총조사 자료는 질적으로 매우 우수한 것으로 알려져 있다. 조사의 완전성이 최소 97% 이상을 유지하고 있으며 연령보고의 오류도 세계에서 가장 낮은 그룹에 속하고 있다. 그러나 연령계층별 오차율의 차이, 조사방법의 비경제성 등은 앞으로 개선되어야할 분야이다. 그러므로 우리나라의 장래 발전을 위하여 실제 고려 할 수 있는 주요 사항을 다음과 같이 정리하였다. 1. 국민 모두 기초 교육을 받은 우리 사회에서 자계식 조사의 재시도를 적극 검토하여 면접 타계식 조사의 한계를 극복하고, 경비를 절약할수있는 방안을 강구할때이다. 2. 정확한 연령을 파악하기 위하여는 4개의 조사사항(보통나이, 띠, 생년월일,양음력)을 질문하여 연령조사방법은 노력에 비하여 실효성이 높지 않으므로 조사 항목의 단순화를 검토할때이다. 3. 사후 조사를 더욱 연구하여 연령 자료만이 아니라 그외 주요조사항목에 대한 정확한 평가 결과를 공표하여 활용하면 총 조사의 발전과 좋은 결과를 얻을수 있는 계기가 될것이다. 4. 영유아인구와 이동이 많은 연령계층의 순 누락이 많은것은 총조사가 반복되어도 계속나타나는 현상이므로 특히 이 연령계층에 해당되는 인구의 확인을 위한 조사항목을 두어서라도 조사의 정확성을 높이는데 노력하여야 한다. 5. 표본 조사 자료를 중심으로 1995년 총조사 2% 표본 Data File을 조기에 편집하여 일반에 공개함으로써 특성별 자료의 활용가치를 높여야 할것이다. 또한 통계자료의 효율성은 시계열 축적에 있으므로 1985년 이전 총조사 2% 자료의 File화와 시계열의 축적이 가능해질때 우리나라 사회과학연구의 발전에 직접적인 도움이 될것이다.

• Journal of Ecology and Environment
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• 제44권4호
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• pp.275-285
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• 2020

Background: In Korea, Symplocos prunifolia Siebold. & Zucc. is only found on Jeju Island. Conservation of the species is difficult because little is known about its distribution and natural habitat. The lack of research and survey data on the characteristics of native vegetation and distribution of this species means that there is insufficient information to guide the management and conservation of this species and related vegetation. Therefore, this study aims to identify the distribution and vegetation associated with S. prunifolia. Results: As a result of field investigations, it was confirmed that the native S. prunifolia communities were distributed in 4 areas located on the southern side of Mt. Halla and within the evergreen broad-leaved forest zones. Furthermore, these evergreen broad-leaved forest zones are themselves located in the warm temperate zone which are distributed along the valley sides at elevations between 318 and 461 m. S. prunifolia was only found on the south side of Mt. Halla, and mainly on south-facing slopes; however, small communities were found to be growing on northwest-facing slopes. It has been confirmed that S. prunifolia trees are rare but an important constituent species in the evergreen broad-leaved forest of Jeju. The mean importance percentage of S. prunifolia community was 48.84 for Castanopsis sieboldii, 17.79 for Quercus acuta, and 12.12 for Pinus thunbergii; S. prunifolia was the ninth most important species (2.6). Conclusions: S. prunifolia can be found growing along the natural streams of Jeju, where there is little anthropogenic influence and where the streams have caused soil disturbance through natural processes of erosion and deposition of sediments. Currently, the native area of S. prunifolia is about 3300 ㎡, which contains a confirmed population of 180 individual plants. As a result of these low population sizes, it places it in the category of an extremely endangered plant in Korea. In some native sites, the canopy of evergreen broad-leaved forest formed, but the frequency and coverage of species were not high. Negative factors that contributed to the low distribution of this species were factors such as lacking in shade tolerance, low fruiting rates, small native areas, and special habitats as well as requiring adequate stream disturbance. Presently, due to changes in climate, it is unclear whether this species will see an increase in its population and habitat area or whether it will remain as an endangered species within Korea. What is clear, however, is that the preservation of the present native habitats and population is extremely important if the population is to be maintained and expanded. It is also meaningful in terms of the stable conservation of biodiversity in Korea. Therefore, based on the results of this study, it is judged that a systematic evaluation for the preservation and conservation of the habitat and vegetation management method of S. prunifolia should be conducted.

• 산업융합연구
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• 제20권11호
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• pp.85-93
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• 2022

2019년 말 기준 전국의 총 인구는 51,849,861명 이며, 최근 5년간 세대 당 인구는 2015년 2.45명/세대에서 2019년 2.31명/세대로 연평균 1.52%의 감소를 보이고 있다. 여기서 연령대별 인구분포 현황을 살펴보면 65세 이상의 고령자 비율이 부산광역시가 18.2%로 가장 높았으며, 세종특별자치시가 9.4%로 가장 적은 것으로 나타났다. 특히 2019년 기준 교통약자에 대한 인구는 전국 15,219천 명으로 전국 인구대비 약 29.4%의 비율을 보이고 있다. 따라서 교통약자가 안전하고 편리하게 이동할 수 있도록 이동편의시설에 따른 이동권 확보가 중요하다. 이와 같은 배경 하에 본 연구는 안전하고 편리한 이동을 위한 교통약자중심의 교통복지시설에 가치를 두고, 특히 고령화 사회의 진입과 교통약자의 지속적인 증가에 대응하기 위한 방안을 제시함에 있어 대중교통시설인 교통복지시설이 교통약자에 미치는 영향을 분석하고 이에 대한 시사점을 제시하는 데 연구의 목적이 있다. 연구 방법은 주요선행연구와 전문가 설문조사를 통해 통계적 분석방법 결과를 제시하였다.

• 한국가구학회지
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• 제24권1호
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• pp.88-103
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• 2013

Households of today tend to gradually change from a large household to a small one. The tendency starts from urban concentration of population with modern industrial society. Small-sized households have rapidly increased with the following three reasons: (i) one-person households with aging society, (ii) individualistic pursuit of happiness, and (iii) emergence of single households due to high prices and a decline in the quality of life. With these social changes, various products for small-sized households have been created and there have also been changes in dwelling patterns with small-size housing and one rooms increasing. Current small-sized living space has combined space of a living room, a bedroom and a kitchen, which makes a house compositive space. A bathroom, however, requires a differentiated suggestion from existing one since it is special space where water is used. Based on this issue, this study intends to present bathrooms in small-sized living space.

• World Technopolis Review
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• 제2권2호
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• pp.50-63
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• 2013

The Hsin-Chu Science-Based Industrial Park (HSIP), established in 1980, has made significant contribution to the development of Hsinchu technopolis. In the past three decades, not only the population structure and industrial patterns have changed significantly, but also a special knowledge-based industrial network has been developed. The 30 years experience of HSIP development provides an excellent opportunity for planners to review the long term impacts of science park development. This paper will review the evolution Hsinchu technopolis in areas of socioeconomic transformation and knowledge interactions between technology community and industrial clustering. In addition to the interpretation of its development by prevailing theories, critical factors influencing the future development of HSIP technopolis will also be discussed in this paper.

• 대한산업공학회지
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• 제25권3호
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• pp.310-320
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• 1999

A mixed model assembly line (MMAL) is a special type of production line where a variety of product models similar in product characteristics are assembled. Determining the model sequence is an important problem for the efficient use of MMALs. This paper considers interactive multiobjective decision making problems for MMAL sequencing. Evolution program is employed as an underlying framework. In this study, a way of approximating the linear utility function is first studied. To improve its search efficiency to the solution space preferred by a decision maker, some modifications of a standard evolution program are made: operating several subpopulations instead of a single population and merging two or more subpopulations to a single subpopulation, and using a Pareto pool. Extensive computational experiments are carried out to verify the performance of the proposed approach. The computational results show that our approach is promising in solution quality.