• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 춘계학술발표대회 논문집
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• pp.83-87
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• 2005

The supply of Korean housing has met the demand thoughout the fourth quarter of the twentieth century, and demographic, social and economic changes have been entailed. All the circumstances became a significant foundation to develop digital homes. This study was designed to find out the residents' current use of and needs for digital services, and the interview with three housewives residing in a recently developed digital home was conducted. The three households used most of the digital services, and favored cellular phone, as the main device to use digital functions, since it's small and easy to carry out and operate. It was noticed that the use and preference of digital services was likely to be explained by the lifecycle each household and the lifestyles of an individual. The participants didn't use the webpage of the digital home since the information contained in the web site wasn't quite useful. Also the interviewees perceived that digital home brings many conveniences and benefits. Currently, the main constraints for further development of digital home in Korea are affordability and the establishment of a variety of life scenarios from real situations.

• 대한산업공학회지
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• 제37권3호
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• pp.234-247
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• 2011

Product-service system (PSS) is a novel type of business model integrating products and services in a single system. It provides a strategic alternative to product-oriented economic growth and price-based competition in the global market. This paper first reviews the current status of PSS, including its concept, characteristics, benefits, and cases. This paper then reviews the existing literature and identifies major research issues for three main phases of a PSS development lifecycle, namely, PSS design, PSS evaluation, and PSS operation. This research is expected to contribute to promoting awareness and improving understanding of PSS in our society and planning of future research in this field.

• 한국의류산업학회지
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• 제23권5호
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• pp.598-610
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• 2021

Korean textile and fashion companies have played a major role not only in developing the Korean economy since Korea's industrialization started in the early 1960s but also in providing opportunities to form and expand chaebols (conglomerates of family-owned businesses). This study reviewed and analyzed the historical development of chaebols, which started the fiber/textile/fashion business before the 1960s and maintained their chaebol status until 2010. The Samsung, Samyang, Kolon, Taekwang, Hyosung, LG, and SK groups were included in the study, and data were collected from diverse sources, including the publications and websites of the chaebol companies, newspapers, magazines, and research articles. The strategies of the companies at the corporate and group levels were examined based on the corporate lifecycle, which consists of existence, growth, maturity, rebirth, and decline stages. The results showed that all the analyzed companies actively engaged in product line expansion during the growth stage. Vertical integration, especially backward integration, was common during the growth stage. Some groups established new companies to manage additional product lines and integration, while others pursued growth strategies mainly at the corporate level. The rebirth stage occurred in only a few companies and groups. Some seemed to be going through the decline stage, and the rest of the groups exited the textile and fashion business.

• Nuclear Engineering and Technology
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• 제54권2호
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• pp.749-763
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• 2022

The fulcrum of economic development is a sustainable supply of electricity. Nigeria is plagued with blackouts, with one of the lowest per capita electricity consumption in the world (circa. 120 kWh per capita). Hence, policies have been instigated to integrate electricity generation from nuclear power plants (NPP) on or before 2027. However, a critical requirement for NPP generation is the implementation of robust human resource development (HRD) programs. This paper presents the perspective of Nigeria in assessing human resources needs over the entire NPP lifecycle following the milestone approach and employing the IAEA's Nuclear Power Human Resource (NPHR) modeling tool. Three workforce organizations are in focus including the owner/operator, regulators, and construction workers following three decades timeframe (2015-2045). The results indicate that for the study period, a maximum of approximately 9045 personnel (73% construction workers, 24% owner/operator, and 3% regulators) should be directly involved in the NPP program just before the commissioning of the third NPP in 2033. However, this number decreases by about 73% (2465 personnel including 94% operator and 6% regulator) at the end of the study timeframe. The results can potentially provide clarity and guidance in HRD decision-making programs.

• 국제초고층학회논문집
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• 제11권2호
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• pp.75-86
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• 2022

High-rise buildings often can accommodate the population of small horizontal cities. The investment in high-rise buildings is considerable and therefore a rapid return on investment is necessary. The immediate availability of high-rise buildings can be achieved by automated prefabrication of highly finished modules and their instant on-site assembly by robotic and automated construction sites. A high-rise building as a vertical city can be considered as a sophisticated organism that can constantly change throughout its lifecycle in response to economic growth, demographic change, and environmental pressures. To date, many new urban high-rise developments claim to be "vertical cities", yet few represent this important characteristic. This article analyzed the technological readiness and innovations in the field of construction automation and robotics including single-task construction robots, automated on-site construction factories, and ambient assisted living. These technological advances enable the realization of future vertical cities that are able to continuously grow and transform in terms of form and function. Finally, the article proposes a visionary archetype of vertical city in the name of "dynamic vertical urbanism" that is easy to expand vertically and horizontally in order to achieve instant availability and full life cycle resilience thanks to advanced building technologies.

• International Journal of Naval Architecture and Ocean Engineering
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• 제6권2호
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• pp.471-483
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• 2014

Since 2009 of global financial crisis, shipbuilding industry has undergone hard times seriously. After such a long depression, the latest global shipping market index shows that the economic recovery of global shipbuilding market is underway. Especially, nations with enormous resources are going to increase their productivity or expanding their shipyards to accommodate a large amount of orders expected in the near future. However, few commercial projects have been carried out for the practical shipyard layout designs even though those can be good commercial opportunities for shipbuilding engineers. Shipbuilding starts with a shipyard construction with a large scale investment initially. Shipyard design and the equipment layout problem, which is directly linked to the productivity of ship production, is an important issue in the production planning of mass production of ships. In many cases, shipbuilding yard design has relied on the experience of the internal engineer, resulting in sporadic and poorly organized processes. Consequently, economic losses and the trial and error involved in such a design process are inevitable problems. The starting point of shipyard construction is to design a shipyard layout. Four kinds of engineering parts required for the shipyard layout design and construction. Those are civil engineering, building engineering, utility engineering and production layout engineering. Among these parts, production layout engineering is most important because its result is used as a foundation of the other engineering parts, and also, determines the shipyard capacity in the shipyard lifecycle. In this paper, the background of shipbuilding industry is explained in terms of engineering works for the recognition of the macro trend. Nextly, preliminary design methods and related case study is introduced briefly by referencing the previous research. Lastly, the designed work of layout design is validated using the computer simulation technology.

• 가정과삶의질연구
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• 제23권3호
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• pp.153-167
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• 2005

This study was conducted to help develop women's human resources and promote married women's return to workforce. Using various data, we examined the patterns of Korean women's economic activities over the lifecycle, career discontinuation and return to the workforce. We also interviewed twenty full-time housewives who wanted to return to workforce. The interview questions included reasons for seeking employment, desired working conditions, and difficulties in finding a job. Major findings are as follows: First, there were two groups with respect to reasons why they want employment One was an economic need such as earning basic living expenses and supporting the family. The other was self-realization and social participation. Second most women wanted to do unskilled labor such as housekeeping work, whereas some young or well-educated women looked for a professional job. Third, married women preferred part-time jobs, which were compatible with their family care demands. Most of them wanted a workplace located close to home. The women with child-care responsibility preferred working at home. Fourth, regarding difficulties of returning to workforce, they pointed out vocational ability problems due to their career discontinuation, social prejudice such as gender discrimination and psychological pressure in maintaining work and family at the same time. In order to promote employment of married women, it is required not only to change social prejudices but also to increase effectiveness in policy implementation. In addition, counseling for job-search and vocational ability training programs should be provide.

• 한국시뮬레이션학회논문지
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• 제24권4호
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• pp.1-9
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• 2015

원자력 분야에서 안전관련(safety-related) 소프트웨어의 활용이 점차 확대됨에 따라서, 그에 상응하는 소프트웨어 안전과 신뢰도 향상을 위한 방안 연구가 지난 10여년 전부터 활발히 진행되고 있다. 원전 계측제어시스템(MMIS)은 원자력 발전소의 두뇌와 신경망에 해당하는 기능을 수행하고 있고 첨단 디지털 장비들로 구성된다. 따라서 원전 계측제어시스템의 소프트웨어 오류는 원자력 발전소 운전에 지장을 초래할 수 있고, 오동작으로 인한 발전소 정지로 경제적 손실을 초래할 수 있다. 소프트웨어 확인 및 검증(verification and validation, V&V)은 소프트웨어 품질을 향상시킬 수 있는 소프트웨어 공학의 분야로 알려져 있고, 원자력 산업계에서는 소프트웨어 생명주기에 따른 철저한 V&V 활동을 이행하고 준수할 것을 법규로 규정하고 있다. V&V 활동은 소프트웨어 전 생명주기에 따라 분석과 시험 활동들의 조합으로 다른 품질관련 공학 업무를 보완하는 역할을 한다. 본 논문에서는 명세 평가, 요건 추적, 소스코드 리뷰, 및 소프트웨어 시험을 통한 최적화된 안전관련 소프트웨어 V&V 방법론에 기반한 소프트웨어 품질 향상 방안과 단계별로 적합한 도구를 활용하여 효율성을 확보할 수 있는 방안을 제시하고자 한다. 제안된 방법론은 실제 신한울 1,2호기 원자력발전소 MMIS 시스템에 적용되어 입증되었다.

• 한국건축시공학회지
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• 제24권1호
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• pp.157-168
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• 2024

최근 국내 건축현장에서 붕괴사고가 계속해서 발생하고 있어 시공 및 자재 품질 점검과 관리에 대한 공사감리의 중요성이 증가하고 있다. 현행 제도 및 기준에 의하면, 공사감리 업무는 주요 책임이 있는 감리자가 건축현장에서 진행되고 있는 시공 품질, 자재 품질, 재시공 이력 등이 상세하게 기술하여 공사감리보고서를 작성한다. 이러한 문서는 대표적인 비정형데이터로 건축현장에서 생성되고 있는 데이터의 80%의 비중을 차지하고 있으며, 건축현장의 품질정보가 상세하게 기록되어있다. 본 연구에 건축현장에서 발생하고 있는 공사감리보고서를 텍스트마이닝으로 전처리 후 감성사전을 구축하여 품질성과 수준을 평가하고 계량화할 수 있는 SL-QPA 모델을 제안하였다. 모델에서 산정된 성과 점수와 법적 기준에 의한 지표와의 피어슨 상관관계 분석하고, 상관계수에 대한 일원분산분석 결과는 통계적으로 유의미하였다. 제안된 SL-QPA 모델은 현행 건축현장 품질성과 진단에 상호 보완적으로 활용될 수 있고, 공사단계에서 연속적으로 생성되는 비정형데이터를 활용하여 점검 및 관리 활동의 적시성을 향상시킬 것으로 기대된다.

• 한국건설순환자원학회논문집
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• 제1권2호
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• pp.114-119
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• 2013

본 연구에서는 공동주택의 난방시스템을 위한 단열재로서 지속가능한 알카리활성 기포콘크리트 배합설계를 제시하기 위한 5배합을 실험하였다. 알카리활성 결합재를 위해 73.5%의 고로슬래그와 15%의 고로슬래그가 5%의 수산화칼슘과 6.5%의 규산나트륨에 의해 활성화되었다. 주요 실험변수인 단위 결합재양은 $325kg/m^3$에서 $425kg/m^3$까지 $25kg/m^3$ 단위로 증가하였다. 실험결과 AA 기포콘크리트는 단위 결합재양이 $375kg/m^3$일 때 KS F 4039에서 제시하는 최소 강도조건 및 경제성을 만족시켰다. 또한 보통포틀랜드시멘트 기포콘크리트 대비 알카리활성 기포콘크리트의 환경영향 저감율은 광화학산화물의 경우 99%, 지구온난화의 경우 87~89%, 자원고갈의 경우 78~82%, 그리고 산성화와 인간독성의 경우 70~75% 수준으로서 매우 높았다.