• Earthquakes and Structures
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• 제16권4호
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• pp.375-389
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• 2019

During earthquakes, the performance of structures needs to be evaluated, which provides guidance for selecting suitable retrofitting schemes. The purpose of this paper is to accomplish seismic assessment of a simple steel residential building. Once the responses of the system are determined, the scope of the study extends to evaluate selected retrofitting strategies that are intended to rehabilitate the flaws of the structure under prescribed ground motions with high probability of occurrence at the site. After implementing the retrofits, seismic assessment of the upgraded structure is carried out to check if the remediation at various seismic performance levels is acquired or not. Outcomes obtained from retrofitted scenarios are compared to the results obtained from the initial un-retrofitted configuration of the structure. This paper presents the process for optimal selection of rehabilitation solutions considering the cost of implementation, downtime and disruption to property owners while improving the seismic performance level of the structure.

• International Journal of Internet, Broadcasting and Communication
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• 제14권1호
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• pp.10-18
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• 2022

Since High Sierra, APFS has been used as the main file system. It is a well-established file system that has been used stably thus far. From the perspective of digital forensics, there are still many areas to be investigated. Apple File System Reference is provided to the apple developer site, but it is not satisfactory to fully analyze APFS. Researchers know more about the structure of APFS than before, but they have not yet fully analyzed its structure to a perfect level about it. In this paper, we develop APFS object identification tool for digital forensics. The most basic and essential object identification and analysis of the APFS filesystem will be conducted with the tool. The analysis in this study serves as the background for an analysis of the checkpoint operation principle and structure, including the more complex B-tree structure of APFS. There are several options for the developed tool, but the results of two use cases will be shown here. Based on the implemented tool, it is hoped that more functions will be added to make APFS a useful tool for faster and more accurate analyses.

• 방사성폐기물학회지
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• 제20권4호
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• pp.533-540
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• 2022

Because of the massive development of nuclear power plants in China in recent years, China is facing the challenge of radioactive waste disposal. China has established complete regulatory requirements for radioactive waste disposal, but it also has encountered problems and challenges in low-level radioactive waste disposal in terms of management, selection of disposal facility sites, and implementation of a site selection plan. Three low-level radioactive waste disposal facilities that have been operated in China are described, and their activity limits, locations, and capacities are also outlined. The connotations of "regional" and "centralized" disposal policies are discussed in light of the characteristics of the radioactive waste. The characteristics and advantages of the regional and centralized disposal policies are compared. It is concluded that the regional disposal policy adopted in 1992 can no longer meet the current disposal needs, and China should adopt a combination of the two disposal policies to solve the problem of radioactive waste disposal.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.709-713
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• 2005

The conflict problems encountered in the construction projects led to prolonged delays in implementation, interruptions and sometimes suspension. This paper has described ten fundamental management principles to avoid conflicts in construction field and increase the productivity. They are: i) hire good (not cheap) construction professionals ii) set reasonable time and cost goals iii) recognize contractors and designers are in business to make profit iv) draft a clear contract document v) pick a suitable project delivery system vi) implement a front-end approach vii) accept construction project as a dynamic process viii) need of education and training of professionals ix) accountability and teamwork in construction site, and x) avoid negligence.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.38-39
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• 2020

Since a lot of fugitive dust is generated at construction and civil engineering construction sites in Korea, the fine dust regulation at construction sites has been strengthened in accordance with the implementation of the Special Act on Fine Dust Reduction. In a construction site, water is generally sprayed to temporarily reduce the generation rate of scattered dust, but there is a problem that when water evaporates, it scatters again. In this study, the performance of a scattering dust inhibitor incorporating a polymer that stabilizes the ground and reduces the rate of scattering dust by forming a polymer film even when water evaporates using a polymer and a surfactant was evaluated.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 가을학술발표대회논문집
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• pp.237-238
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• 2023

Urbanization and the increase in building scale have amplified the complexity of M.E.P design. Traditional design methods face limitations when considering intricate pathways and variables, leading to an emergent need for research in automated design. Initial algorithmic approaches encountered challenges in addressing complex architectural structures and the diversity of M.E.P types. However, with the launch of OpenAI's ChatGPT-3.5 beta version in 2022, new opportunities in the automated design sector were unlocked. ChatGPT, based on the Large Language Model (LLM), has the capability to deeply comprehend the logical structures and meanings within training data. This study analyzed the potential application and latent value of LLMs in M.E.P design. Ultimately, the implementation of LLM in M.E.P design will make genuine automated design feasible, which is anticipated to drive advancements across designs in the construction sector.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 춘계학술대회
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• pp.227-230
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• 2015

경제의 흐름, 주가 등을 분석, 예측을 위해 경제 뉴스, 주가 등 데이터 수집이 필요하다. 일반적인 웹 크롤러는 자동적으로 웹서버를 방문하면서 웹페이지 내용을 분석하고 URL들을 추출하면서 웹 문서를 수집한다. 반면 특정한 주제의 문서만을 수집할 수 있는 크롤러 형태도 있다. 특정 사이트에서 경제 뉴스 정보만 수집하기 위하여 사이트의 구조를 분석하고 직접적으로 데이터를 수집해올 수 있는 래퍼 기반 웹 크롤러 설계가 필요하다. 본 논문에서는 빅데이터를 기반으로, 경제뉴스 분석 시스템을 위한 크롤러 래퍼를 설계, 구현하여 경제 전문 분야의 뉴스 데이터를 수집하였다. 2000년부터 현재까지 미국 자동차 시장의 주식 데이터를 래퍼 기반으로 가져오고, 사이트 상에서의 데이터가 업데이트되는 주기를 판단하여 주기적으로 업데이트 함으로써 중복되지 않게 하였다. 그리고 미국, 한국의 경제 기사를 래퍼 기반의 웹 크롤러를 사용하여 수집하고, 향후 분석이 쉽게 데이터를 정형화 시켜 저장한다.

• 대한지역사회영양학회지
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• 제7권2호
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• pp.266-276
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• 2002

In this study, a computerized nutritional and health guide program for workers was developed. The dietitian at the work site could utilize periodically conducted medical examination data to develop an effective health care counseling model based on the developed Nutritional and Health Guide Program. A personal computer (Pentium II PC MMX-150, 32MB RAM, 2.95 GB HDD) with Microsoft Visual Basic 6.0 Enterprise Edition and Microsoft Access 97 installed, was used. The Nutritional and Health Guide Program consisted of seven main menus and 43 sub-menus. Included in the main menu were Basic Information, Periodic Health Check-ups, Visitors' Consultations, Nutritional/Health Tips, Nutritional Education according to Diseases, Help and Exit. In the Periodic Health Check-up menu, dieticians could input the health examination data of employees and touch for the recommended treatments for diseases such as obesity, diabetes, high cholesterol, hypertension and hepatitis. The Visitors'Consultation menu has been designed to compile health information about the employees who sought consultations. The Nutritional/Health Tips menu was designed to provide 14 kinds of programmed nutritional educational media and information. In the Nutritional Education According to Diseases menu, the dietitian could judge the subject's willingness to obtain treatment based on the Stage of Change Model. According, the content of the administered respective nutritional education was classified by stages. The Help menu, provide a chart of the method and procedure used as nutritional guidelines, by which the results of the health examination were classified as people in good health and those requiring special medical attention. The results of the evaluation of this program showed highly positive rates for usefulness (4.09), convenience (4.04), lettering size (4.02), interest (3.93), design (3.49). It also showed that 97.5% of the subjects thought that this program would be helpful for implementation of their company's nutritional educational program. Therefore, this menu could help dietitians plan, conduct, and evaluate their nutritional guidelines for employees. It is expected that The Nutritional and Health Guide Program developed in this study will play a role as a scientific and effective guide in conjunction with health examination results.

• 한국측량학회지
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• 제39권6호
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• pp.477-482
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• 2021

지하공간통합지도는 보안이 요구되는 기간시설 정보이나 지하공사 현장에서 굴착 공사 시 파열 사고 예방을 위하여 현장에 대한 모든 지하시설물의 정보를 제공하고 있다. 이러한 정보의 제공은 사용자에게 관심대상 이외 추가적인 정보를 제공함으로써 보안 데이터의 정보유출에 대한 위험성을 증가시키는 요인이 된다. 본 논문에서는 현장에서 지하공간통합지도 가시화시 작업자의 관심 대상 지하시설물에 대해서는 전체 가시화를 진행하시만 그렇지 않은 지하시설물은 가시화를 최소화 하여 보안 데이터 정보유출의 위험성을 최소화하는 가시화 필터링을 설계 및 구현하였다. 이를 위하여 관심대상 지하시설물들 각각에 대한 일정거리의 가시화 영역을 생성하고, 이를 공간 합집합 연산을 통해 통합된 가시화 필터를 생성하였다. 지하공간통합지도를 화면에 출력할 때 생성된 필터 정보를 사용하여 필터영역 안에 위치한 객체만 가시화를 하고, 밖에 존재하는 객체는 가시화를 하지 않음으로써 사용자에게 정보제공을 최소화 할 수 있다.

• 예술인문사회 융합 멀티미디어 논문지
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• 제6권2호
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• pp.35-44
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• 2016

최근 마이스산업이 신성장동력산업으로 떠오르고 있다. 국내의 대부분 MICE행사는 소규모/저비용으로 진행되고 있다. 행사주최자 입장에서는 반복, 소모적으로 발생하는 브로슈어, 홍보물제작 등의 인쇄물 비용의 절감과 행사진행에 필요한 단순 안내진행요원들의 경비 절감을 원하고 있다. 기존 모바일웹은 행사 참가자가 필요한 정보를 바로 얻지 못하고 스스로 정보를 찾고 검색해야 되는 단점이 있다. 따라서 행사기간에 단기적으로 사용할 수 있는 저비용, 고효율의 행사정보 제공 솔루션의 개발이 필요하다. 본 연구에서는 비콘 기술을 이용한 전시/컨벤션 행사용 통합관리시스템을 구현하였다. 비콘 기술을 적용하여 행사현장 안내시스템을 통한 행사지원 관리의 효율성을 제공하고, 콘텐츠관리시스템(CMS)을 이용한 디지털브로슈어 관리기능을 통한 정보검색 용이성과 비용절감 효과를 높일 수 있다. 소규모 전시/컨벤션 행사에 주최 측의 직접 홈페이지 구축과 현장관리시스템 운영을 통해 효율적인 행사관리를 할 수 있다.