• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1608-1614
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• 2009

In recent days, the study of urban regeneration has been conducting with purposeful and sincere intent starting out with the residential environment improvement works. Within the range of urban regeneration, the low-cost housing technology means development of totally-integrated housing technology that may be applied to the regeneration project, especially for the rundown areas where infrastructure facilities in the urban zone have been degraded and obsoleted. In line with this, among many and varied methods in order for realization of the low-cost housing as a part of urban regeneration project, this study should like to propose an improvement methods of the key technologies in relation to the construction works by type of work with which construction costs (directing cost) would be reduced. And, in order to elicit the method for element technology that has been developed and improved in the most optimal manner centering on the selected construction work by the type of work, the researcher conducted comparative review of summary of element technologies related to the construction works concerned, characteristics, and construction method thereof. In particular, the researcher investigated the expenses (construction cost and labor cost), constructions (contractibility and productivity), safety, quality of works, and the technical status in environmental aspects, and the researcher also conducted analyses and evaluations thereof.

• 한국건축시공학회지
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• 제12권3호
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• pp.340-346
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• 2012

최근 건설 산업은 정보화를 바탕으로 하여 체계적인 시스템의 도입을 추구하고 있다. 그 중에서 자원 조달관리의 경우 건축공사에서 비용과 품질에 직접적으로 관계되는 중요한 부분이다 또한 비용 및 일정과 불가분의 관계가 있어 이를 효율적으로 연계시키는 것은 매우 중요하다. 따라서 본 연구에서는 조달 자원의 다양한 분류 및 활용을 위하여 액티비티와 내역을 연계시킨 기초자료를 구축하였다. 또한 각각의 액티비티에 할당된 일위대가 세부품목을 연계하였다. 그리고 기준 시점에서 조달되어야하는 각종 자원 및 정보를 다양한 형태로 분류 가공하여 활용할 수 있는 액티비티별 소요자원 조달계획 모델을 제안하였다. 이때 제안된 소요자원 조달계획 모델은 기존의 수동적인 조달관리에서 발생하는 다양한 문제점을 파악하여 수정 및 보완할 수 있는 부가적 기능을 제공함으로써 그 활용성이 증대할 것으로 사료된다.

• 경영과정보연구
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• 제13권
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• pp.141-162
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• 2003

This article discusses the issues of the estimated size and characteristics of irregular employment work force in Korea after IMF economic crisis in 1997. The issues of the estimated size of irregular employment work force originated from different concepts and its operationalizations among the labor economists, despite their utilization of the same labor force data, 'Economically Active Population Survey(EAPA)' collected from Korea National Statistical Office(KNSO). And the issues contribute toward the understandings of the irregular employment and the limits of the EAPA, despite its various usefulness. This article also describes the summary characteristics of irregular employment work force from both sides of labor supply and its demand. The major characteristics of irregular employment work force on the labor supply side appears in the concentration of social minorities, i.e. woman, the aged, lower educated and skilled populations. On the labor demand of irregular employment work force, the majority of it concentrated on the establishments under 10 employees, and probably the important incentives for irregular employment work force of the firms is labor cost efficiency. Finally, this article propose an alternative against the discrimination between the regular and irregular work force.

• 플랜트 저널
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• 제8권1호
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• pp.50-59
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• 2012

The current dual-watchdog estimation system has individually calculated the construction, the engineering and the procurement cost. The dual-watchdog estimation system is inefficient and prolonged estimation period because of the lack of the interoperability and the difference of material unit cost and construction unit cost. In order to resolve this problem, new estimation software was developed. The estimation software is developed by making up for the weak points in existing estimation method. The cost data with the same standard is the key point. And this software enhanced accuracy and speed of the data search in stylized estimation standard. A summary of the construction, the engineering and the procurement cost was generated in this estimation software. The unit rate about the labor cost, equipment and expense through a sheet was handled. The developed estimation software has five categories on engineering cost, procurement cost, construction cost and subcontractor management sheet. In this study, the estimation software to supplement the faults of the existing estimation method was developed. And estimation software on petrochemical projects increases an efficiency of the estimation work.

• Current Photovoltaic Research
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• 제3권2호
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• pp.45-49
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• 2015

In the past few decade's researchers, scientists, engineers of photovoltaic (PV) industry are working towards low cost high efficiency Si solar cells. Over the last decade the interest in back contact solar cell has been acquiring as well as a gradual introduction to industrial applications is increasing. As an alternative to conventional solar cells with a front and rear contact, the back-contact cells has remained a research topic. The aim of this work is to present a comprehensive summary of results incurred in the back contact back junction solar cells such as interdigitated back-contact (IBC), emitter wrap-through (EWT) and metallization wrap-through (MWT) over the years.

• 대한가정학회지
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• 제30권3호
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• pp.79-89
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• 1992

Indicies of the labor productivity were assessed from 80 industry foodservice erstablishments in terms of meals served per labor hour, labor minutes per meal served, and labor cost per meal served. The labor productivity indicies were also assessed according to variables related to work such as working hours, paryment for the workers, volume of feeding, utilization of foodservice equipment, use of processed foods, and background of employees. The summary of the results was as follows: 1. Manufacturing sector among surveyed industry foodservice showed the highest labor productivity indicies followed by training institute. 2. 28.8% of surveyed establishments used dishwashing machine, while manual dishwashing was used in 71.3% of subjects, equipped rate point was 9.8 out of 20, and disposable dish was used in 30% of subjects. 3. A significant positive relationship was found between the number of meals and the labor procductivity indicies. As the number of meals increased, more meals were served per worker as per labor hour. 4. A significant negative relationship was found between price of meal and the labor productivity didicies. As the price of meal increased, less meals were served per worker as well as per labor hour.

• Korean Journal of Radiology
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• 제25권2호
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• pp.126-133
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• 2024

Large language models (LLMs) have revolutionized the global landscape of technology beyond natural language processing. Owing to their extensive pre-training on vast datasets, contemporary LLMs can handle tasks ranging from general functionalities to domain-specific areas, such as radiology, without additional fine-tuning. General-purpose chatbots based on LLMs can optimize the efficiency of radiologists in terms of their professional work and research endeavors. Importantly, these LLMs are on a trajectory of rapid evolution, wherein challenges such as "hallucination," high training cost, and efficiency issues are addressed, along with the inclusion of multimodal inputs. In this review, we aim to offer conceptual knowledge and actionable guidance to radiologists interested in utilizing LLMs through a succinct overview of the topic and a summary of radiology-specific aspects, from the beginning to potential future directions.

• 기술사
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• 제15권1호
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• pp.46-50
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• 1982

Following rapid industrial development and urbanization in Korea, there is a need for the Government to implement effective control of pollution and to undertake specific schemes in areas where pollution of the environment is severe. In response to this need, Government of Korea prepare Han River Basin Environmental Master Plan Project for water, air, solid waste to cover environmental protection of the Han River Basin. The Project area is approximately 27,000 sq. Km extending over Seoul, Kyunggi, Kwangwon, Chungbuk Province. The total population of Master Plan Project area is approximately 11.6 million, or one-third of the total population of Korea. There are about 8,000 industries, including those located in 16 industrial complexes, in the project area. The scope of work and terms of reference are the following: (1) A Summary of existing land use and forecasts for changes in land use by the year 2,000. (2) Emission inventories for air, waste water, and solid wastes. (3) Forecasts of future population growth patterns and pollution loadings. (4) Identification of specific projects needs to reduce pollution levels and satisfy the environmental quality standards. (5) A Program of enforcement to include (i) self monitoring, and (ii) governmental inspections and surveillance. (6) A program for quality improvement and quality assurance of environmental measurements. (7) Reports summarizing all data collected analyzed during the study. (8) Conceptual design and feasibility studies, including cost estimates, for needed pollution control projects. (9) A financial plan for future detailed design and construction of public facilities, for financial incentives to industry, and for user charges for industrial use of public treatment of disposal works.

• 한국지하수토양환경학회지:지하수토양환경
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• 제25권2_spc호
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• pp.55-69
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• 2020

Permeability-analyzing methods commonly involve small-scale drilling, such as pumping or slug test, but it is difficult to identify overall distribution of permeability of the entire target sites due to high cost and time requirement. Spectral induced polarization (SIP) method is known to be capable of providing distributions of both the porosity and the pore size, the two major parameters determining permeability of the porous medium. The relationship between SIP variables and permeability has been studied to identify the hydrological characteristics of target sites. Kozeny-Carman formula has been improved through many experiments to better predict fluid permeability with electrical properties. In this work, the permeability prediction techniques based on SIP data were presented in accordance with the hydrogeological and electrical characteristics of a porous medium. Following the summary of the techniques, various models and related laboratory experiments were analyzed and examined. In addition, the field applicability of the prediction model was evaluated by field case analysis.

• 디지털융복합연구
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• 제12권12호
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• pp.457-467
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• 2014

본 연구는 의료기관 내 검진센터의 선택요인, 만족도, 재이용의사를 파악하여 이용자의 선호도를 이해하고 검진센터 이용자의 지속적인 검진센터 유도방안을 모색하기 위하여 2013년 2월 22일부터 2013년 4월 5일 까지 부산시 의료기관 내 검진센터를 운영하고 있는 10개소를 선정하여 구조화된 설문지를 이용하여 검진센터를 방문한 수검자들을 대상으로 하여 892부의 설문지를 이용하여 빈도, 비율, 평균의 차이분석, 로지스틱 회귀분석을 실시한 결과, 연구대상자들의 인구사회학적 특성은 여성, 50대 연령, 대졸 이상의 학력, 사무 전문직, 월평균 소득 200만원 미만, 직장인 일반 신검자, 신검센터의 방문이 처음이 아닌 사람, 질병이 없고, 건강하다고 생각하는 사람에서 높은 분포를 보였다. 검진센터 선택요인은 접근성, 직장과의 제휴, 주변권유 순의 결과를 보였다. 검진센터에 대한 만족도는 접근성(3.59), 검진내용(3.59), 브랜드인지도(3.58)시설 환경(3.50), 비용경제성(3.40) 순의 결과를 보였다. 질병이 없는 40~50대 연령층에서 검진센터를 재방문 할 의향이 높게 나타났다. 그러므로 이들 집단에 대한 적극적인 관리방안의 모색이 필요하다. 그리고 검진센터의 검진 종류 및 검진 항목을 다양화하여 이용자의 특성에 적합한 건강 검진이 이루어져야 할 것이다.