• 국제학술발표논문집
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• The 10th International Conference on Construction Engineering and Project Management
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• pp.791-798
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• 2024

Construction industry records poor safety records annually due to a large number of injuries and accidents on construction jobsite. In order to improve existing safety performance, object detection approaches have been extensively studied using vision-sensing techniques and deep learning algorithms. Unfortunately, an insufficient number of datasets (e.g., images) and challenges that reside in manually collecting quality datasets constitute a significant hurdle in fully deploying object recognition approaches in real construction sites. Although advanced technologies (e.g., virtual reality) have attempted to address such challenges, they have achieved limited success because they still rely on labor-intensive work. A promising alternative is to adopt generative AI-based data augmentation methods attributed to their efficiency in creating realistic visual datasets and proven performance. However, there remain critical knowledge gaps on how such alternatives can be effectively employed by safety managers on real construction sites in terms of practicability and applications. In this context, this study establishes a framework that can identify effective strategies for improving object detection performance (e.g., accuracy) using generative AI technologies. The outcome of this study will contribute to providing guidelines and best practices for practitioners as well as researchers by exploring different generative AI-driven augmentation approaches and comparing the corresponding results in a quantitative manner.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2001년도 학술발표회 발표논문집
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• pp.355-359
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• 2001

Soil is potentially suitale alternatives for use in many environments because many of the conventional materials have been encountered to be shortage due to excessive use by human. However soil without any modifications has been found to be unsuitable for building construction materials. Soil with reinforcement are naturally an answer to these alternatives. Through recent studies about fiber mixed soil, it has been shown that. fiber is a good material to be applied to the building wall. In this study, engineering properties of fiber mixed soil are collectively shown and ideas about use of fiber mixed soil are proposed in addition to the use for building wall,.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1995년도 Proceedings of the Korea Automation Control Conference, 10th (KACC); Seoul, Korea; 23-25 Oct. 1995
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• pp.328-331
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• 1995

A successful, computer-aided design support system can help a process designer focus on making effective design decisions, not merely tedious routine calculations. Such a system is essential to enhance quality of design in terms of economics, environmental benignity, reliability, robustness, and operability. Such a statement is even more accepted when applied to conceptual design problems, where gross design specifications are given while a combinatorial number of design alternatives exists. This paper presents an agent-based approach as a systematic and efficient way to design a design support system for the synthesis of conceptual chemical processes. An agent-based approach allows us to handle design knowledge as an object and thus greatly improve the modularity and reusability of that knowledge. Such modularity and reusability lead to the increased productivity in the development of a design support system and the increased ease in the relaxation of design decisions and the generation of design alternatives, both of which functions are critically important in dealing with the complexity and uncertainty of conceptual design problems.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2000년도 추계학술대회 논문집
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• pp.101-108
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• 2000

Tins paper is designed (ⅰ) to envisage the characteristics of high speed rail stations that will be in operation when the Seoul-Pusan line currently under construction is completed and (ⅱ) to assist policy makers in mapping out transportation strategies by providing insights into how advanced countries have handled problems under similar circumstances. Ultimately, tins paper intends to present alternatives of trans-modal systems in an attempt to set a direction for future policy making in the high speed rail sector. The alternatives recommended in tins report stress two important elements for maximized utility of high speed rail: One is to maintain consistency in transportation policies and the other is to attract consumers to the station areas.

• 경영과정보연구
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• 제7권
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• pp.381-400
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• 2001

Our country has been encountered with severe economic depression since IMF loan(1997). Korean economic system should be reformed according to the globalization and the world industrial trends based on adavanced technologies and skills. Todays the venture business should be considered to be the alternative of recovering Korean economy and increasing highly estimated values. Generally speaking, the venture business is defined as a new business with high risk-high return with new technical entrepreneurship. This treatise suggests the activating alternatives of the venture business in Korea. These alternatives are suggested as follows. First, several measures to incruit excellent technicians are suggested. These measures includes incruitment of parttime technicians, application of cooperative program of education training unemployees, the stock option system, a stock-sharing plan for the employees, etc. Second, in the financial aspect, activation of the foundation investment company, activation of the COSDAQ market, strengthening of technology security are suggested. Third, in the technical development aspect, amplification of inauguration assistant center, construction of technology accumulative network, etc. These measures will contribute to the development of Korean economy and the welfare of Korean people.

• 설비공학논문집
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• 제21권2호
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• pp.118-125
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• 2009

The purpose of this study is to evaluate the stack effect reduction alternatives in tall complex buildings in cold climates. The main problems in tall buildings occur in elevators. Such problems as elevator doors that do not close and exhaust airflows result in excessive pressure differences across elevator doors due to stack effect. Under the expected conditions causing these pressure differences, Field measurements are performed in three tall buildings. Each result of the measurements is analyzed in architectural design aspects. With these analysis, building design guidelines are proposed and analyzed by field measurements and computer simulations.

• 대한전기학회논문지:전력기술부문A
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• 제48권4호
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• pp.358-364
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• 1999

The auxiliary transformers or start-up/stand-by transformer(s) are installed against the start-up and shut-down of generator and emergency status in fossil power plant. The on-site power supply configuration using these transformers must be determined, considering configuration requirements, site characteristics, reliability and availability severely because it is remarkably important for safety and ecfonomy of plant. The auxiliary or start-up/stand-by power supply configuration has been determined considering only safety requirements and construction cost until now in Korea. This paper presents general theorems for the reliability estimation and proposes 2-unit based 4 alternatives for the start-up power supply stystem of 500㎿ standardized fossil power plant. The reliability and unavailability of equipment, system and configuration are determined using minimal cut-set methodology. The optimized plan of 4 alternatives is determined based on this ultimate reliability and unavailability.

• Journal of Construction Engineering and Project Management
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• 제5권3호
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• pp.18-28
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• 2015

Bidding and contract systems are used for public construction projects to select contractors following fair competition principles and to execute national budgets effectively. Many challenges have arisen due to a lack of transparency and fairness and because bidding practices have been luck-based. Few comprehensive or comparative analyses have been conducted on the performance and limitations of bidding and contract systems, and empirical analyses designed to improve policies on and the practice of such systems are lacking. This study empirically analyzed current bidding and contract systems to seek ways of improving them. The study proposes several alternatives to resolve the problems with and irrationalities of the current system: 1) improving bidding and selection systems by changing them from a luck-based price competition into a technical merit- and value-based competition; 2) improving the assessment criteria to meet the current market level of bid and winning prices; 3) adjusting contractual responsibilities and sharing structures to meet the current trend; and 4) strengthening the competitiveness and expanding the social responsibility-based procurement systems of construction companies.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.410-413
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• 2003

건설시장에서 경쟁력을 강화하고 국제정책에 대응하기 위하여 설계업체와 시공업체의 협력을 장려하는 설계시공 일관입찰방식이 대두되었다. 설계시공일괄입찰방식은 공기단축, 사업비 절약, 품질 향상을 위한 전도 유망한 입찰방식이지만 국내 건설산업에서는 제도의 미비, 관계자들의 경험 및 인식부족 등으로 이러한 장점을 살리지 못하고 있다. 이에 따라 본 연구에서는 국내 공공공사 설계시공일괄입찰방식에서의 문제점을 사업비, 품질, 사업기간의 측면에서 분석하여 개선방안을 제안하고자 한다.

• 한국산업융합학회 논문집
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• 제6권2호
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• pp.131-139
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• 2003

The links operating interrupted flow are intend to yield the traffic between the out flow and inflow part effect zone of street section, we build the delay model using the time gap between under construction and not. We review the applicability of interrupted flow, and thus we can put this data to practical use as the basis data to compute the inducement charge for traffic delay. Also building about traffic effect zone of interrupted flow wouldn't produce at the section beside occupying roads and construction cross section, thus we must review the plan to minimize traffic delay by the construction occupying road. In future there must be advanced the incomplete in this study, and groping for the various alternatives to minimize the traffic delay by the road occupying construction, with developing the various sets of detailed analyzing models, that is analysis on the street strength, crossroads geometrical forms of crossroads, public traffics, pedestrians, occupying types.