• 국제강구조저널
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• 제18권4호
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• pp.1470-1481
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• 2018

Building-level response to post-earthquake fire hazards in steel buildings has been assessed using primarily two-dimensional analyses of the lateral force resisting system. This approach may not adequately consider potential vulnerabilities in the gravity framing system. For this reason, three-dimensional (3D) finite element models of a 10-story case study building with perimeter moment resisting frames were developed to analyze post-earthquake fire events and better understand building response. Earthquakes are simulated using ground motion time histories, while Eurocode parametric time-temperature curves are used to represent compartment fires. Incremental dynamic analysis and incremental fire analysis procedures capture a range of hazard intensities. Findings show that the structural response due to earthquake and fire hazards are somewhat decoupled from one another. Regardless of the level of plastic hinging present in the moment framing system due to a seismic event, gravity column failure is the initiating failure mode in a fire event.

• Advances in nano research
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• 제14권1호
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• pp.67-80
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• 2023

Economic investigation is one of the main issues regarding the design and production of small-scale structures. This paper concerns the creation, implementation, and economic aspects of the cross-section profile of small-scale structures regarding the dynamic response of the free and forced vibration behavior of spinning nanoscale beams based on big data analysis. According to the financial analysis, the three practical non-uniform functions of cross-sections are compared to the uniform beam in the same weight and the equal material used. The previous studies reported that the uniform beams are more stable and contain a better frequency response based on the mechanical analysis. Still, concerning the economic investigation, which means the considered structures should have equal length and have the same weight in the aspect of material used, the conclusion can be different from the mechanical aspect. Consequently, in the current paper, the dynamic response along with computer technology as well as the big data analysis of the free and forced vibration of the nanobeam regarding the economic shape of the cross-section is scrutinized.

• Steel and Composite Structures
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• 제49권3호
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• pp.349-359
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• 2023

Dynamic response and economic of a laminated porous concrete beam reinforced by nanoparticles subjected to harmonic transverse dynamic load is investigated considering structural damping. The effective nanocomposite properties are evaluated on the basis of Mori-Tanaka model. The concrete beam is modeled by the sinusoidal shear deformation theory (SSDT). Utilizing nonlinear strains-deflection, energy relations and Hamilton's principal, the governing final equations of the concrete laminated beam are calculated. Utilizing differential quadrature method (DQM) as well as Newmark method, the dynamic displacement of the concrete laminated beam is discussed. The influences of porosity parameter, nanoparticles volume percent, agglomeration of nanoparticles, boundary condition, geometrical parameters of the concrete beam and harmonic transverse dynamic load are studied on the dynamic displacement of the laminated structure. Results indicated that enhancing the nanoparticles volume percent leads to decrease in the dynamic displacement about 63%. In addition, with considering porosity of the concrete, the dynamic displacement enhances about 2.8 time.

• 한국재난정보학회 논문집
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• 제19권3호
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• pp.451-470
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• 2023

연구목적: COVID-19가 2019년 12월에 중국에서 처음 발견된 이후 전 세계로 빠르게 확산되면서, 개인의 생활뿐만 아니라 기업과 국가에도 심각한 경제적·사회적 문제를 야기하였다. 개인, 기업, 정부 모두는 COVID-19의 확산을 방지하기 위하여 다양한 노력을 하였다. 감염병에 대응하고 관리하기 위해서는 개인, 기업, 정부 모두의 역할이 중요하나 선행연구에서는 부분적으로만 연구를 진행하였다. 따라서 본 연구에서는 감염병 재난관리 대응에서 성과를 내기 위해 개인, 기업, 정부의 역할에 대해 종합적으로 연구를 진행하였으며, 감염병 재난관리에 대한 근로자의 인식과 정부 및 기업 역량이 재난대응 성과에 미치는 영향을 파악하고자 하였다. 연구방법: 설문조사는 울산, 경주, 양산지역의 자동차 제조업 종사자를 대상으로 실시하였고, 분석은 빈도분석, 요인분석, 상관관계분석, 회귀분석을 실시하였다. 연구결과: 근로자 인식은 재난관리성과 뿐만 아니라 정부역량과 기업역량 모두에 긍정적인 영향을 주는 것으로 나타났다. 또한 정부역량과 기업역량은 재난관리성과에 긍정적인 영향을 주었다. 결론: 본 연구의 결과는 재난대응 성과를 달성하기 위해서는 근로자의 인식뿐만 아니라 정부와 기업의 역량이 중요함을 밝혔다는 점에서 의미를 가진다. 뿐만 아니라 근로자들은 정부와 기업에서 주어지는 교육과 참여의 기회를 잘 활용하고 근로자가 할 수 있는 범사회적인 노력을 기울여야 할 것이다.

• 한국병원경영학회지
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• 제13권3호
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• pp.94-113
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• 2008

The purpose of this study to develop the Hospital Management Award(HMA) programme which would be a basic information for advancing hospital industry in Korea. HMA programme in the study are designed with general census building method of researchers and with the data of professions opinion which was survey with structured questionnaire Major results of this study are as follows. First, Hospital Management Award(HMA) programme is perceived very necessary and useful for advancing hospital industry of Korea (positive response rate: 93.0%). Second, Criteria, Classification of hospitals may be the function, size and ownership of hospital. Third Evaluating area of hospital management, examining method and evaluation marking points are designed on the basis of hospital management information system. Forth, this study suggests same strategies for execution of the programme. On the basis of the study results this study suggests that Hospital Management Award(HMA) programme would rather actualized in advance by formal institute and/or association. And some in depth studies are required mainly for development of the action plan of HMA programme.

• 한국주거학회논문집
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• 제18권5호
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• pp.53-64
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• 2007

In recent, the concept of management is emphasizing the aspects of social welfare, especially in permanent rental housing that most of the residents are very low income households. Although the quality of service for the residents of permanent rental housing was improved comparatively, it still needs to continually change in response to the needs of residents. To figure out the better way of supporting the service for the residents of permanent rental housing, this study examined the role and function of management office and compared perception on management services between management staffs and residents of permanent rental housing. Based on the in-depth interview with 5 managers of permanent rental housing, two types of survey questionnaire (residents/staffs of management office) were developed for the research purpose. A sample of 89 management office staffs and 111 residents were used for the data analysis. Most of the respondents recognized the need of a cooperation system among management office, social welfare center, and residents for providing better management system and welfare service.

• 대한안전경영과학회지
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• 제15권4호
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• pp.323-330
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• 2013

The number of domestic smartphone users exceeded 30 million people, and the time in the future everyone will use a smartphone that will come with ago. Past purchase decisions, related research and product from the competition between the past case and the relevant literature for the smartphone market smartphone type to derive a purchase decision factors in the decision to purchase any difference between the factors. Literature and practices through performance, switching costs, product loyalty, design, brand, after-sales service, the price more than 7 variables were analyzed. One hundred people surveyed, respectively, did not obtain the response of a variety of ages and occupations, age of the sample used in the analysis of this study, and is concentrated as a student at the university of smartphones used to facilitate users analysis was done. We expect smartphone companies and related companies to be able to give guidelines for effective technology management.

• 디지털산업정보학회논문지
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• 제16권2호
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• pp.35-43
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• 2020

Cloud computing integrates computing resources such as servers, storage, and networks with virtualization technology to provide suitable services according to user needs. Due to the structural characteristics of sharing physical resources based on virtualization technology, threats to availability can occur, so it is essential to respond to availability threats in cloud computing. Existing over-provisioning method is not suitable because it can generate idle resources and cause under-provisioning to degrade or disconnect service. System resources must be allocated in real-time according to the system load to guarantee the cloud system's availability. Through appropriate management measures, it is necessary to reduce the system load and increase the performance of the system. This paper analyzes the work response time according to the allocation or migration of virtual machines and discusses an efficient resource management method considering the system load.

• International Journal of Quality Innovation
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• 제5권2호
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• pp.70-78
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• 2004

Client-supplier collaboration in new product development (NPD) has been a strategy in response to fierce global competition. Traditionally, Hong Kong suppliers collaborate with worldwide clients through original equipment manufacturing (OEM) arrangement in which suppliers manufacture products according to clients' design. In recent years, a growing number of Hong Kong suppliers have transformed to original design manufacturing (ODM) in which they are assigned a design responsibility other than manufacturing products. The ODM arrangement necessitates a close interaction between clients and suppliers, which brings about intense conflict. Conflict has been recognized as an important factor affecting NPD performance including product quality. This paper studies the conflict handling practices of Hong Kong ODM suppliers based on 87 survey data. The results show that the suppliers frequently adopt effective conflict handling practices by which they can develop products of good quality through better design decisions. The results also suggest that the use of ineffective conflict handling behaviors, particularly avoiding, should be reduced for better product quality.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2000년도 추계학술대회 및 정기총회
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• pp.215-218
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• 2000

Workflow Management System(WfMS) enables corporations to manage business processes efficiently The purpose of this research is to develop a management system that is capable of managing complicated business processes efficiently under distributed environment where many companies or divisions are participating. Run-time encapsulation proposed in this paper is a system design methodology that enables appropriate response to the dynamically changing processes by using nested processes. We have implemented WfMS under Web environment using run-time encapsulation. Run-time encapsulation using nested process is an efficient development methodology for implementing heterogeneous and distributed WfMS under web environment.