• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 춘계 학술발표회 논문집
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• pp.1343-1350
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• 2005

In this study, the whole deformation conditions of domestic old tunnels and reinforcement methods for deformation tunnels were investigated and analysed, and the present conditions, occurrence cause and reinforcement methods of cavity behind the tunnel lining were investigated and analysed comprehensively. The deformation causes of domestic old tunnels could be classified in three kinds : change of earth pressure operating tunnel ground, material problem of concrete lining, mistake of design and construction. As a result of analysis, the tunnel deformation was occurred by not specific cause but various cause As a result of investigation for 455 domestic tunnel data, more than 70% of the tunnel deformation was related to leakage and the other deformation cause also accompanied leakage mostly. An applied reinforcement method was related to leakage and flood prevention measures, but application of reinforcement method for boundary area between tunnel and ground and tunnel periphery which influence on the tunnel stability was still defective. The cavity of domestic old tunnel occupied about 16% of the total tunnel length and about 68% of cavity was located in the crown of tunnel, and besides, the occurrence cause of cavity was analysed to design, construction and management cause. The filling method for cavity using filling material was comprehensively appling to cavity behind tunnel lining.

• 국제지역연구
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• 제18권3호
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• pp.293-316
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• 2014

본 연구는 국내의 일반가정과 다문화가정을 대상으로 가정폭력에 관한 비교연구를 하고자 하는 것이 주된 목적이다. 가정폭력에 대한 실증연구를 수행한 2009-2014년의 국내 논문과 학술지를 대상으로 메타분석방법(Meta-Analysis Method)을 사용하여 국내 일반가정과 다문화 가정의 가정폭력요인을 분석하기 위하여 사회복지학 7편, 교육학 7편, 상담학 및 심리학 6편 등 전체 20편의 학술지를 대상으로 메타분석을 수행한 결과 다음과 같은 연구결과를 얻었다. 첫째, 국내 일반가정과 다문화가정을 대상으로 한 가정폭력요인 간의 효과가 차이가 있었다. 둘째, 국내 일반가정과 다문화가정의 가정폭력에 대한 모형은 임의효과모형보다 고정효과모형이 더 적합하였다. 셋째, 국내 일반가정과 다문화가정을 대상으로 한 가정폭력요인 간의 차이를 분석한 결과 상대적 효과와 누적효과에 대해서 차이를 보였다.

• 한국실내디자인학회논문집
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• 제25권5호
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• pp.140-147
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• 2016

This research aims to establish the size standard of university library's user space, and present the standard and method to calculate total area required in the planning of new building construction and remodeling. Nine university libraries newly constructed or remodeled since 2000 were selected among the libraries of large scale universities with more than 10,000 enrolled students as the target libraries in this research. The target libraries were classified into A group (five cases partially remodeled) and B group (four cases newly constructed or fully remodeled) on the basis of the change of times. A university library can be divided into three spaces (user space, administration space and public space). This research classified the reading room in the user space into bookshelf zone, reading zone, information/office zone and hall/other zone, and analyzed area ratio according to each zone. B group's bookshelf zone decreased 12% more than A group, and B group's reading zone increased 10% more than A group. However, there was no big change in the area ratio of information/office zone and hall/other zone. This can be interpreted that university library changes from book and archive preservation-oriented space to user-oriented space. This research presented a proper reading room area calculation method, based on the capacity of books, by reflecting such a change. Each zone's standard was set up through classification of domestic and international standards, based on which, the calculation method of university library's total floor area required was presented. The reason why there was difference in university library's total floor area required according to domestic standard and international standard was that the number of enrolled students per seat in the reading room was different. The area calculation methods presented in this research can be utilized as useful data upon planning university library construction or remodeling.

• Nuclear Engineering and Technology
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• 제23권4호
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• pp.410-419
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• 1991

국내 남동지역에서 수집된 4가지 벤토나이트 시료를 대상으로 X-선 회절과 화학조성을 분석한 결과 Ca-벤토나이트인 것으로 나타났다. 4가지 시료의 비표면적, 양이온교환능 및 팽윤도를 비교하여, 분배계수 측정을 위한 적절한 재료로서 동해 A 시료를 선택하였다. Cs, Co 및 Am의 흡착평형은 약 10일 정도에서 이루어졌으며, Sr의 경우는 이보다 훨씬 발리 이루어졌다. 분배계수 측정 결과로부터 국산 벤토나이트가 높은 흡착능을 가지고 있음을 알았으며, 농도변화에 대한 분배계수 감은 약 $10^{-7}$ mo1/$\ell$의 농도범위에서 최고를 나타내었다.

• 한국산학기술학회논문지
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• 제15권10호
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• pp.6264-6269
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• 2014

본 논문에서는 UWB 대역에 관한 해외 각국의 주파수 정책에 대해 살펴보고 그 결과를 우리나라 실정에 적용할 수 있는 방안에 대해 연구를 수행하였다. 그 결과 현재 우리나라의 기술 기준은 미국이나 유럽 등의 외국과 달리 주로 통신 서비스분야에서 사용할 수 있도록 규정되어 있음을 확인하였다. 그러나 UWB의 서비스 영역이 다양한 분야로 확대되고 있어 이러한 규정은 국내 산업의 보호 및 활성화를 저해하는 요소로 작용하고 있다. 따라서 외국의 사례와 같이 방송 통신을 제외한 다양한 영역에서 사용할 수 있도록 출력기준만 만족하면 언제, 어디서든지 사용할 수 있는 비허가 무선기기항목으로 지정하여 관련 산업보호 및 활성화를 도모해야 할 것으로 사료된다.

• 한국의류학회지
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• 제44권6호
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• pp.1163-1177
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• 2020

The purpose of this study is to figure out the information needed to improve the shape and size suitability of face-applied mask sheets. The study analyzed the shape of the mask sheet from the scanned images of 50 products of 37 domestic brands. In addition, each measurement of 42 mask sheets were compared and analyzed multilaterally with the 3D measurement dimensions of the faces of men and women in their 20s from the 6th SizeKorea data. Analysis on the shapes of mask sheets indicated that domestic commercial mask sheets are mainly made of single or dual sheets, with slits for enhancing fitness to the three-dimensional face. In the dimensional analysis of Korean men, women and mask sheets, most of the lengths of the mask sheets were significantly larger or smaller than the actual faces of men and women. The horizontal length and vertical length of the forehead above the eyes are significantly shorter, thereby requiring adjustments in the dimensions of this area. In order to improve the size suitability of the mask, it is necessary to adjust the dimensions of the problem area according to the research results as well as diversify the dimensions considering the target layer.

• 한국의류산업학회지
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• 제24권5호
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• pp.636-646
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• 2022

This study attempted to investigate the research trend of MLD studies which were issued from 2001 to March 2022 by research period/area/method/purpose through the analysis of academic theses and journals and use the results for the growth and of MLD. The study results found the followings: First, in terms of the results by research period, a total of 84 academic papers and journals were published: Phase 1 (15), Phase 2 (47), Phase 3 (22). Second, when analyzed by research area, 'cosmetology' was the highest with 19 papers in terms of the number of studies. In fact, the field of study accounted for the largest portion in all three phases. Third, when analyzed by research method, quantitative research showed the largest percentage in all three phases. Fourth, when analyzed by research purpose, a practical approach was dominant with 81 papers out of the total number of 84 (3 papers in theoretical approach). Concerning a domestic MLD-related research trend, it is an essential step for MLD study establishment and qualitative improvements. Such research analysis of MLD studies is meaningful in that it has not been attempted before. In addition, it is anticipated that the study results would be helpful in searching a direction for the academic growth and development of MLD.

• 한국항만학회지
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• 제9권1호
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• pp.33-43
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• 1995

Korean economic and industrial structure has been seperated into some areas with the trend of the change to the bloc system of international economy: the Gyeongin including the capital area, the Middle-West, the South-West, the South-East, and the Eastern sea areas. Mokpo port has played a major role as the central one of the South-West area and the entrance of Yeong-san river of Jeonnam province gate. Some studies has been done on the Mokpo port, but there is no research of the analytical approach about it. In this paper, we analyze the data of 1994's on the domestic and oceangoing piers in the Mokpo port and simulate the transportation process of it through a queueing model. The results of the simulation are summarized as follows: The average arrival interval of the domestic vessel is 6.034 hours. The average service time and the berth utility rate are 24.056 hours and over 100%, respectively. The average arrival interval of the oceangoing vessel is 34.48 hours. The average service time and the berth utility rate are 120.04 hours and the 34.91%, respectively. The proposal to improving of the Mokpo port as follows: It is desirable to extend the capacity of domestic pier to about 50% for the optimal utility rate of 70% and in the case of oceangoing pier to be increase 65% of the vessel capacity for the optimal utility rate of 70%.

• 한국산업보건학회지
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• 제24권3호
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• pp.293-299
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• 2014

Objectives: The main objective of this study is to investigate domestic usage amount of insecticide for vegetable cultivation to provide fundamental data for establishing job-exposure matrix(JEM) related to farmers treating agricultural insecticide. Materials and Methods: The survey on domestic usage amount of insecticide for vegetable cultivation was conducted by two research methods. The first method is to utilize agricultural pesticides published annually from Korea Crop Protection Association(KCPA). The second method is to apply cultivation area of vegetable announced officially from Statistics Korea(SK). An estimation of domestic usage amount of insecticide for vegetable cultivation through the second method was done by multiplying total cultivation area of vegetable($m^2$) with optimal spray amount of insecticide for vegetable cultivation per unit cultivation area of vegetable ($kg/m^2$). Results: As a result of analysis of public data related to insecticide for vegetable cultivation, it was found that its domestic usage amount has decreased gradually from the first sale year(1969) to current year(2012). There is, however, a considerable difference of annual usage trend of insecticide for vegetable cultivation between shipments and estimation. The annual usage trends of insecticide for vegetable cultivation based on regional classification were different from those based on total aspect. Conclusions: The region which used insecticide for vegetable cultivation the most in Korea was Jeolla-do, followed by Gyeonsang-do, Chungcheong-do, Seoul/Gyeonggi-do, Gangwon-do and Jeju-do. Substantially, mean ratio of usage amounts of insecticide based on shipments and those based on estimation by cultivation area was $281{\pm}115%$, which indicates that usage amounts of insecticide estimated by cultivation area are three times lower than those based on shipments.

• 상하수도학회지
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• 제14권3호
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• pp.217-223
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• 2000

This study is to investigate the effect on the mount of domestic water use by the water pressure and the number of a family for the each house. Tow apartment sites which had elevated water tanks on the roof were selected as the reserch area. Tow techniques such as Analysis of Variance(ANOVA) and Analysis of Correlation were used for the analysis.