• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.658-668
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• 2009

Earth-moving operation has a great impact on the overall budget and schedule of any heavy civil projects. More often than not, the operational decisions are made largely based on field personnel's experience and judgment. In particular, decisions on earth moving operations by scraper-dozer fleets have been heavily influenced by the following belief: "The longer a dozer pushes a scraper for loading, the better earth-moving productivity is gained by the fleet." Even though there is some truth to this notion, scraper-dozer earth moving operations involve a much complex process that requires a systematic analysis for predicting the maximum production. To this end, this paper presents a spreadsheet-based scraper-dozer fleet operation model for its production optimization. Various optimization techniques, including a genetic-algorithm method, are presented for comparison and each technique's pros and cons are discussed.

• 한국산업융합학회 논문집
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• 제27권2_2호
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• pp.403-414
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• 2024

The aim of this study is to evaluate the productivity of multilayered modular housing units during the prefabrication phase. Additionally, it shows the results of productivity analysis conducted using the Web Cyclone technique. Initially, an review of literature and prior studies helped outline the comprehensive manufacturing process of laminated modular apartments, examining the range of minimum, average, and maximum work durations along with workforce size. Subsequently, the productivity of the multilayered apartments' prefabrication was assessed using the Web Cyclone technique, focusing on the workflow, duration, and personnel involved. This analysis also included a comparison of productivity against the initial plan based on the outcomes of a sensitivity analysis.

• 한국건설관리학회논문집
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• 제6권4호
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• pp.133-141
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• 2005

본 연구는 6시그마 경영기법의 건설업에 대한 적용 성과를 분석하고자 수행하였다. 이를 위하여 S 건설업체의 조직 및 인력별 6시그마 적용 프로젝트의 품질비용을 분석하고, S 건설업체의 임직원들을 대상으로 6시그마 경영에 대한 설문조사를 실시하였다. 위와 같은 목적과 방법에 따라 진행된 본 연구의 결과를 요약하면 다음과 같다. : 1) S 건설업체의 6시그마 경영기법의 도입은 03년과 04년에 걸쳐 258건의 프로젝트를 수행하면서 품질비용 절감효과를 발생시켰다. 또한, S 건설업체는 6시그마 적용 전 시그마 수준이 업무 분야별 평균 2.8이었으나, 적용 후 평균 3.6으로 향상되었다. 특히, 공사 관리 분야는 적용 전 1.3시그마에서 적용 후 2.6시그마로 매우 높은 향상율을 보였다. 2) 6시그마 경영활동에 대한 업무수행 기대성과에 관한 분석결과 대다수의 직원들은 6시그마 경영이 비용절감 효과가 있으며, 품질향상에 도움이 되는 것으로 인식하고 있었다. 그러나 현 시점은 S 건설업체에 있어 6시그마 경영기법의 도입 초기단계이므로 업무처리의 효율성에는 큰 효과를 보이지 않는 것으로 조사되었다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.453-457
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• 2006

1963년 우수 기술인력의 확보를 위해 기술사제도를 도입한 후, 주택건설 200만호 건설 등 건설경기의 활성화로 인한 건설기술자의 수급불균형 등을 해결하기 위하여 학력 및 경력기술자를 건설기술자로 인정하는 제도를 1995년에 도입하였다. 이러한 인정기술자제도의 도입으로 건설기술자는 양적으로 크게 증가하여 2000년 이후 건설기술자의 심각한 공급초과가 발생하였고, 이에 따라 최고 기술자격인 기술사의 활용에 있어 심각한 폐해가 일어나고 있다. 정부는 최근 WTO협약에 의한 기술개방, 국가간 상호인증 등과 관련한 기술사의 전문성을 확보할 수 있는 법 ${\cdot}$ 제도적 기반을 마련하고 있다. 이러한 제도적 측면을 반영한, 정확한 기술사의 인력수급예측을 통하여 기술사 인력 수급의 문제점을 분석하고, 향후 기술사 인력의 수급을 조정하기 위해 제도적인 측면의 개선방안을 제시하고자 한다. 본 연구의 결과는 향후 선진수준의 기술사 인력수급체계 구축은 물론 효율적이고 일관된 기술사 양성 및 활용 체제 구축에 이용될 수 있을 것이다.

• 한국건설순환자원학회논문집
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• 제7권2호
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• pp.131-137
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• 2019

본 연구에서는 공사중단 건축물이 위치한 지역의 공무원 및 주민 등의 관계자들을 대상으로 공사중단 건축물에 대한 인식을 조사하고 어떠한 문제가 내재되어 있고 효율적 관리 방안을 분석하였다. 전국에 산재하여 있는 공사중단 건축물은 강원지역에 63개가 위치하고 있고 이는 전체에서 16%를 차지하고 있으며, 용도별 분류로서는 공동주택이 31%로 가장 많이 차지하고 있으며, 10년 이상의 공사중단 장기방치 건축물이 241개로 62%를 차지하고 있었다. 공사중단 건축물을 효율적으로 관리하기 위하여 시특법 상에 준하는 시설물 등급관리와 주기적이고 지속적 관리를 통하여 안전성확보 및 범죄예방을 위한 보호조치가 이루어져야 한다. 공사중단 건축물의 효율적 관리를 위하여 예산과 인력부분에 대하여 효율적인 지원이 필요한 실정이다.

• 융합정보논문지
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• 제7권1호
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• pp.25-33
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• 2017

기업에서는 정보유출을 막기 위해 방화벽, DLP 기능의 개별 보안시스템과 통합모니터링 시스템을 구축하여 내부직원에 의한 정보유출을 상시 모니터링하고 있다. 특히 통합모니터링 시스템의 많은 로그 데이터 때문에 시간과 금전적인 비용이 많이 발생하고 있으며, 시스템 속도 저하로 인해 빠른 정보유출 인원을 감지하기 힘들다. 빠른 정보유출 감지를 위해 대용량의 로그 데이터를 일자별, 개인별로 수치화하여 시스템 속도를 빠르게 할 필요가 있다. 그리고 정보유출 징후 인원에 대한 지속적인 모니터링 프로그램을 개발해서 관리할 필요성이 있다.

• 복식문화연구
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• 제14권4호
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• pp.542-555
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• 2006

The main objective of this study was to investigate the relationship between benefits segmentation and knitwear purchasing behavior of college female students in the U.S. The questionnaires for this survey were developed to measure knitwear purchasing behavior and benefits segmentation. The questionnaire was administered to 119 female college students in the University of California. The data was analyzed by percentage, frequency, mean, factor analysis, Cluster Analysis and ANOVA, Duncan Multiple Range test. The female college students in the U.S. were classified into fourth subdivisions by the cluster analysis. In the case of fashion information sources of knit wear, significant differences were found according to benefits sought subdivision in observation of famous people's clothing, fashion articles in magazines and newspapers, TV advertisements, Newspaper advertisements, advice of salespeople, and Catalogs. The evaluation criteria of knit wear product of consumers were significantly different depending on benefits sought subdivision in design/style, quality of construction, fashionable, brand and store name, pleasing to others, prestige, and sexy. The store attributes of knitwear product of consumers were significantly different depending on benefits sought subdivision in friendliness of sales personnel, product knowledge of sales personnel, brand names, new fashion, and variety of products. The outlook for the industry of knitwear look to remain bright, there should be a continuous effort to research and invest in consumer satisfaction of knitwear.

• 드라이브 ㆍ 컨트롤
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• 제14권4호
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• pp.51-60
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• 2017

In this study to develop disaster response robot in complex disaster site, we present the design of hydraulic manipulators for armored robot systems. To this end, we performed voice of customer researches with firefighters and rescue personnel. We created and analyzed the mission scenario of firefighters and rescue personnel in complex disaster situations, and derived the required functions of the robot to successfully perform missions. A heavy-duty, heat resistant, dexterous hydraulic robot manipulators is designed to realize the required functions. The designed robot has been verified through simulations and analysis in terms of the working area of the robot, actuating torques, and temperature analysis.

• 로봇학회논문지
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• 제18권3호
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• pp.293-298
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• 2023

The military is facing a continuous decrease in personnel, and in order to cope with potential accidents and challenges in operations, efforts are being made to reduce the direct involvement of personnel by utilizing the latest technologies. Recently, the use of various sensors related to Manned-Unmanned Teaming and artificial intelligence technologies has gained attention, emphasizing the need for flexible utilization methods. In this paper, we propose four dataset construction methods that can be used for effective training of robots that can be deployed in military operations, utilizing not only RGB image data but also data acquired from IR image sensors. Since there is no publicly available dataset that combines RGB and IR image data, we directly acquired the dataset within buildings. The input values were constructed by combining RGB and IR image sensor data, taking into account the field of view, resolution, and channel values of both sensors. We compared the proposed method with conventional RGB image data classification training using the same learning model. By employing the proposed image data fusion method, we observed improved stability in training loss and approximately 3% higher accuracy.

• 대한안전경영과학회지
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• 제20권1호
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• pp.11-21
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• 2018

Safety accidents, which are called industrial accidents in construction work, are often caused by unstable physical and personal conditions combined during preparation and execution of work. It is difficult to manage all the construction works, but especially in the field of apartment construction work, complex and many kinds of works are being carried out at the same time. In the current construction, safety regulations such as safety management guidelines are generally well maintained, but the execution of manpower resources that can fulfill them is limited, and it is difficult to reduce the accident rate and loss cost. Therefore, in this study, it is a reality that most of the types of construction work are under contruction by subcontracting contract, so they are limit by methods of manual maintenance and safety education. Currently, the subcontractor is also allowed to perform safety management through the composition of the safety management review body, but it is operated formally. So alternatives to this were studied. As a result, safety accidents occur in the subcontractor's worker due to vertical integration, which is characteristic of the construction industry, together to the contractor, the safety management system is based on a safety construction system in which a worker who has a certain qualification condition such as career experience of the work type, work understanding of the work type, and management experience of the work type among the subcontractor, when we manage based on mutual personality which is the personality of interpersonal relationship that can communicate with each other by work type, process and grouping, it is concluded that effective and practical safety management can be achieved to reduce the accident rate and loss cost.