• 로봇학회논문지
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• 제17권4호
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• pp.387-396
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• 2022

Logistics industry still heavily relies on human labor in many field processes. However, robot applications in logistics are rapidly increasing, encouraged by technological progresses in robotics and cheaper robot solutions from competition between robot suppliers. Effectiveness of logistics automation are higher productivity for cost reduction and increased process capabilities for better profit, which is witnessed in many fields of logistics industry. In this paper, differences in logistics services - contract logistics, parcel, and fulfillment - are addressed, and characteristics and issues in application of various kinds of logistics robots such as AGV, AMR, ASRS, box/piece handling robots and robotic wearable devices are discussed. The advantages from flexibility and scalability of logistics automation by robots will benefit the future logistics business.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.780-785
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• 2005

This paper aims to consider an overall benefit-duration optimization (OBDO) problem for the sake of maximizing owner's economic benefits, whilst considering influences of schedule compression incurred opportunity income on the profitability of a large-scale construction project. Unlike previous schedule optimization models and techniques that have focused on project duration or cost minimization, with greater weight on contractors' interests, OBDO facilitates owner's economic benefits through overall benefit-duration optimization. In this paper, the objective function of OBDO model is formulated. An example is illustrated to prove the feasibility and practicability of the overall benefit-duration optimization problem. The significance of employing OBDO model and future research work are also described.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1093-1099
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• 2022

The number of buildings is increasing day by day. The next logical footstep is tackling challenges regarding scarcity of resources and sustainability, as well as shifting focus on existing building structures to renovate and retrofit. Many existing old and heritage buildings lack documentation, such as building models, despite their necessity. Technological advances allow us to use virtual reality, augmented reality, and mixed reality on mobile platforms in various aspects of the construction industry. For these purposes, having a BIM model or high detail 3D model is not always necessary, as a simpler model can serve the purpose within many mobile platforms. This paper streamlines a framework for generating a lightweight 3D model for mobile platforms. In doing so, we use an existing structure's site survey data for the foundation data, followed by mobile VR implementation. This research conducted a pilot study on an existing building. The study provides a process of swiftly generating a lightweight 3D model of a building with relative accuracy and cost savings.

• 한국의학물리학회지:의학물리
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• 제2권1호
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• pp.3-16
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• 1991

Abstract. An area of particularly rapid technological growth in the last 15 years has been medical imaging (conventional X-ray, ultrasound, X-ray computed tomography (CT), magnetic resonance imaging (MRI). As the number and complexity of imaging studies rises, it becomes ever more important to distribute these images and the associated diagnoses in a timely and cost-effective fashion. The purpose of this paper is to describe the requirements for a future digital radiology system which will efficiently handle the large volume of images that generated, add new functionality to improve productivity of physicians, technologists, and other health care providers, and provide enough flexibility to allow the system to grow as medical image technology grows.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.251-252
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• 2021

With the recent emergence of the 4th Industrial Revolution, the government is promoting the development of smart construction technology and institutional improvement through various policies to induce cutting-edge and technological innovation in the construction industry. As part of such smart construction technology, the application of BIM is being activated, and related regulations and guidelines are constantly being supplemented. In relation to BIM, there are many studies on the fields of library, design standards etc., but research on specific unit price utilization and unit price DB construction for calculating construction cost is insufficient. Therefore, in this study, a basic study was conducted on the linkage of the construction standard market unit price and the BIM library. Based on the basic research conducted in the future, we intend to establish specific standards for calculating BIM-based construction costs.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2010년도 춘계학술대회 초록집
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• pp.128.2-128.2
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• 2010

For stationary 1kW-class fuel cell systems to be used widely, it is essential to achieve dramatic improvements in system durability as well as cost reduction. In order to address this engineering challenge, it is important to develop innovative technologies associated with BOP components. According to this background, in 2009, the Korean Government and "Korea Institute of Energy Technology Evaluation and Planning(KETEP)" launched into the strategic development project of BOP technology for practical applications and commercializations of stationary fuel cell systems, named "Technology Development on Cost Reduction of BOP Components for 1kW Stationary Fuel Cell Systems to Promote Green-Home Dissemination Project". The objectives of this project are to develop fundamental technologies to meet these requirements, and to improve the performance and functionality of BOP components with reasonable price. The project consortium consists of Korea's leading fuel cell system manufacturers, BOP component manufacturers which technologically specialized, and several research institutions. This paper is to provide a summary of the project, as well as the achievements made through the 1st period of the project(2009~2010). Several prototypes of BOPs - Cathode air blowers, burner air blowers, preferential oxidation air blowers, fuel blowers, cooling water pumps, reformer water pumps, heat recovery pumps, mass flow meters, valves and power conditioning systems - had been developed through this project in 2010. As results of this project, it is expected that a technological breakthrough of these BOP components will result in a substantial system cost reduction.

• 한국융합학회논문지
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• 제8권2호
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• pp.163-168
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• 2017

기존의 공공사업 타당성 평가는 경제성분석을 위주로 추진되었으나, 계층분석법(AHP: Analytic Hierarchy Process)을 도입하면서 정책성, 지역균형발전, 기술성 등의 항목이 추가로 평가되고 있다. 이 연구는 최근 3년간 건설사업과 연구개발사업의 예비타당성조사 데이터를 분석하고, 비용편익비(Cost-Benefit Ratio)와 계층분석의 가중치(weight) 간의 상관관계 분석을 통해 상호 관련성을 검증하고자 한다. 연구결과 비용편익비와 AHP 가중치의 상관관계가 건설사업의 경우 0.744, 연구개발사업의 경우 0.899로 나타났다. 즉, 사업시행 여부를 결정하는 AHP 결과가 비용편익분석 결과에 의해 크게 좌우됨으로, 경제성 위주의 평가를 보완하기 위해 도입된 AHP가 당초 기대와는 달리 종합적 분석의 역할을 충분히 수행하지 못하고 있다. 따라서 AHP 분석의 효과를 극대화 할 수 있는 다양한 연구설계가 지속적으로 논의될 필요가 있다.

• Journal of Chest Surgery
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• 제25권4호
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• pp.438-444
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• 1992

We analysed 7,180 annual cases of surgical treatment performed by Department of Thoracic and Cardiovascular Surgery of 6 major institutes in Seoul Korea, All cases were applied to 101 of 140 coded items applicable to the field of Thoracic and Cardiovascular Surgery, in the book of "Standard Price List for Medical Service" which was notified by the Ministry of Health and Social Affairs, and of them, applied field specific items were 70 of 93 applicables. The most frequently applied items were those associated to ECC[extracorporeal circulation] 1,510 cases, and then item of closed thoracostomy 751 cases was next. Except the items associated to ECC, the coded item of the highest "Total cost[fee x total applied numbers]" was mitral valve replacement 182,356,570 won[534,770 won x 341 cases]. 140 items were arranged in "Total cost" order, and then categorized into 5 groups. Medical insurance fees of each group were modified by different grades without changes in sum of total fees. Fees of Group 1, the highest group in "Total cost" were pulled up, on the other hand, Group 4, the lowest group, were pulled down, Group 5, composed of overlapping items with other fields, were not changed. The result of adjustment by grouping showed 21.2% increment effect[535,749,105 won] in real income. And we found that new coded items for modern high technological procedures should be added to "Standard Price List for Medical Service “Standard Price List for Medical Service".

• 한국항행학회논문지
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• 제20권6호
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• pp.519-527
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• 2016

본 논문에서는 해운선사의 운영비용 관리를 위해서 현존선의 항차 단위의 선박 경제운항 기술을 위한 개념 연구를 수행하였다. 해운산업 현황과 경제운항 기술개발 현황, 기술 요구사항 및 선박 운영에 필요한 비용 요소를 분석하여 경제운항 관리요소를 도출하였다. 개별 항차를 기준으로 현존선의 경제운항은 연료비와 항만에서 사용되는 비용을 최소화 하는 것이며, 이를 위해서 저속운항, 정속운항, 배수량 관리, 최적 트림, 최적 항로 선정, 터미널 생산성 관리, 선박 에너지 절감 활동을 관리한다. 최적항로, 터미널 생산성 관리는 절감된 시간으로, 저속운항, 정속운항, 최적트림, 선박 에너지 절감은 권고사항 만족 여부를 관리한다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 1998년도 21세기 한반도 농업전망과 대책(한국작물학회.한국육종학회 공동주관 심포지움 회보)
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• pp.68-111
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• 1998

The structure of the Hanwoo (Korean Native Cattle) Industry remains very weak and vulnerable to the WTO/IMF system. Considering that the majority of cattle farmers are small sized, and that marketing systems are outdated and inefficient, rapid expansion of lower priced beef imports by WTO system and rapid increasing of production costs by IMF system would lead to the deprivation of a regular source of farm income and threaten the stability of rural life. Accordingly, the Hanwoo industry should be expanded in accordance with progress in the implementation of (1) programs for the structural adjustment and (2) measures to compensate for the loss. Efforts for lowering major production factor costs needs to continue, In order to increase the supply of calves at low cost, the programs of collective cow-calf farms should be expanded, thereby reducing the cost of calf purchase, which constitutes the largest share of Hanwoo production cost. Also, feedlot operations should be encouraged for small herd farms in order to achieve a substantial saving in beef production costs by integrated operations from calf production to cattle fattening. A substantial saving would also be made by collective purchase and distribution of various inputs through the cooperatives' channels. Extension services should be strengthened for cattle farm management, cattle care and feeding, prevention of cattle disease, etc. In order to minimize cash outlays for commercial mixed feeds, utilization of far by-products as feeds should be enhanced and production of forage crops productive of resources, such as land and rural labor, during the farm o(f-season, needs to be encouraged. Also, technological development for enhancing the nutritional value of farm by-products should be encouraged. Measures for successful segregation of the Hanwoo beef market should be implemented, thereby enhancing incentive for quality beef producers and protecting consumers willing to pay higher price for quality beef. For development of the Hanwoo industry, a considerable time frame would be required in order for (1) small livestock farmers to make a successful adjustment by staying in the enterprise and achieving increased price efficiency (2) livestock farmers to acquire know-how for producing quality Hanwoo beef, (3) the ongoing Government policy of enhancing price-quality competitiveness, and for improving the quality Hanwoo beef marketing to take root. (4) consumers to increase their ability to distinguish meat quality, and others.