• Structural Engineering and Mechanics
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• 제58권5호
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• pp.757-781
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• 2016

The results of diagnostics and analysis of an industrial hall located on the premises of a thermal power plant severely damaged by fire are presented in the paper. The comprehensive failure-related diagnostics, non-destructive and destructive tests of steel and concrete materials, geodetic surveying of selected structural members, numerical modelling, static analysis and reliability assessment were focused on two basic goals: The determination of the current technical condition of the load bearing structure and the assessment of its post fire resistance as well as assessing the degree of damage and subsequent design of reconstruction measures and arrangements which would enable the safe and reliable use of the building. The current mechanical properties of the steel material obtained from the tests and measured geometric characteristics of the structural members with imperfections were employed in finite element models to study the post-fire behaviour of the structure. In order to compare the behaviour of the numerically modelled steel roof truss, subjected to the effects of fire, with the real post-fire response of the damaged structure theoretically obtained resistance, critical temperature and the time at which the structure no longer meets the required reliability criteria under its given loading are compared with real values. A very good agreement between the simulated results and real characteristics of the structure after the fire was observed.

• 대한후두음성언어의학회지
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• 제9권1호
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• pp.43-46
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• 1998

Background and Objectives : Singers, the vocal equivalents of Olympic athletes, may present with vocal dysfunction in the singing voice before adverse effects are noted in the speech mode. For the classically trained singers, any imbalance in the respiratory, laryngeal or resonatory subsystems may manifest first in technical compensations. Therefore it is necessary that baseline values be available in order to differentiate technique related dysfunction from abnormalities within the phonatory system. Materials and Methods : Vocal efficiency measures were collected from 55 classically trained singers and 20 untrained adults. All singers was divided into 3 groups : (1) Singers who have normal larynx with out voice symptoms. (2) Singers who have vocal nodule without voice symptoms. (3) Singers who have vocal nodule with voice complaints. Results and Conclusion : Results were compared with each other. Differences in each group wert found, suggesting the need for separate normative data to be used for the evaluation of the classically trained singers.

• 대한안전경영과학회지
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• 제16권4호
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• pp.167-173
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• 2014

Hydrogen energy is expanding in range for civil use together with development of pollution-free power sources recently, and it is judged that the use of hydrogen will increase more as a part of carbon dioxide reduction measures according to the Climatic Change Convention. Especially, it is thought that the securement of safety of the used dispenser will be the biggest obstacle in the use of high-pressure hydrogen because the hydrogen station is operated in a high pressure. This study found risks in the process and problems on operation by making use of HAZOP(6 kinds), a qualitative safety evaluation technique, and FMEA(5 kinds), a fault mode effect analysis, for the hydrogen charging system at a hydrogen gas station, derived 6 risk factors from HAZOP and 5 risk factors from FMEA, and prepared measures for it.

• 청정기술
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• 제4권1호
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• pp.24-34
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• 1998

Eco-labelling programs contributed to the promotion of international trade of environmentally friendly products. However, it has potential trade implications. From the WTO's point of view, environmental measures relevant to eco-labelling should not discriminate between home produced goods and imported goods. Transparency should be guaranteed in preparation, adoption and application of eco-labelling. Developed countries address that eco-labelling of non-product PPM criteria is included in the provisions of TBT of WTO. However, there are more general afraids that non-product PPM-based eco-labelling can be unfairly discriminately trade measures without transparency Thus, transparency of procedures of eco-labelling, harmonization and mutual recognition of eco-labelling criteria, and technical assistance should be recommended in order to reduce trade-discriminating effects of eco-labelling.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2004년도 춘계학술대회 논문집
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• pp.429-433
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• 2004

Most utiltity systems are subject to frequent changes, often due to increased loads and demand to up-grade quality of service provided. Urban renewal, expressway construction and suburban growth have also caused significant changes in urban utility distribution systems. Recently, it is required that a guideline for planning of a complete system, the reasonable design and construction methods for the efficient installation common utility tunnels must be estabilished. It prompts drastic measures to guard cities and their inhabitants against the horror of massive fires in the future. Preparedness holds the key to safety.

• The Journal of Asian Finance, Economics and Business
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• 제2권4호
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• pp.31-38
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• 2015

During the last two decades the idea that central bank independence and transparency helps to maintain price stability, became popular among economists and central bankers. Many countries' governments give their monetary authorities higher independence and transparency to achieve the price stability goal. However, emerging countries such as Kazakhstan, suffer from high inflation. This inflation occurs largely due to a low level of independence and transparency of central banks. This research project measures the current level of independence and transparency of central bank of Kazakhstan. Indices were used to measure central bank independence and transparency. Central bank independence was measured by two types of indices: based on central bank laws (legal independence) and based on central banks governor's turnover (TOR). Developing countries have a weak legal framework, implying that a legal independence index cannot be appropriate to use as a measures of actual independence. Therefore, by paying attention to the other two indices, we can say that the central bank of Kazakhstan has a low level of independence and transparency. This, in turn, can be one of the causes of high inflation in Kazakhstan.

• 한국기계기술학회지
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• 제13권2호
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• pp.9-19
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• 2011

Most real world design evaluation and risk-based decision support combine quantitative and qualitative (linguistic) variables. Decision making based on conventional mathematics that combines qualitative and quantitative concepts always exhibit difficulty in modelling actual problems. The successful selection process for choosing a design/procurement proposal is based on a high degree of technical integrity, safety levels and low costs in construction, corrective measures, maintenance, operation, inspection and preventive measures. In this paper, a design decision support framework using a composite structure methodology grounded in approximate reasoning approach and evidential reasoning method is suggested for design evaluation of machinery space of a ship engine room at the initial stages. An illustrative example is used to demonstrate the application of the proposed framework.

• 한국컴퓨터정보학회논문지
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• 제24권1호
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• pp.107-113
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• 2019

Along with the development of IOT, the number of people using IOT devices has enormously increased and the IOT era has come. Especially, people using the IP cameras among Internet devices have been drastically increasing. It is because the IP cameras are well networked and comparatively cheap compared with CCTVs, and they can also be monitored and controlled in real time through PCs and smart phones for the purposes of general theft prevention and shop surveillance. However, due to the user's serious lack of security awareness and the fact that anyone can easily hack only with simple hacking tools and hacking sites information, security crimes that exploit those have been increasing as well. Therefore, this paper describes how easily the IP cameras can be hacked in the era of IOT, what kind of security incidents occurred, and also suggests possible government measures and new technical solutions to those problems.

• International Journal of Computer Science & Network Security
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• 제21권4호
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• pp.249-254
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• 2021

Our society is depending on mobile devices that play a major role in our lives. Utilizing these devices is possible due to their speed power and efficiency in performing basic as well as sophisticated operations that can be found in traditional computers like desktop workstations. The challenge with using mobile devices is that organizations are concerned with the interference between personal and corporate use due to Bring Your Own Device (BYOD) trend. This paper highlights the importance of mobile devices in our daily tasks and the associated risks involved with using these devices. Several technologies and countermeasures are reviewed in this paper to secure the mobile devices from different attempts of attacks. It is important to mention that this paper focuses on technical measures rather than considering different aspects of security measures as recommended by the cybersecurity community.

• 문화기술의 융합
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• 제10권3호
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• pp.61-67
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• 2024

군 부대 및 기관에서 근무하는 장병은 국가안보와 관련된 민감정보 및 기밀을 다루는 업무의 특성상 엄격한 보안정책 및 기술을 적용받고 있어 보안 스트레스를 겪게 될 가능성이 크다. 본 연구의 목적은 이러한 군 장병의 보안 스트레스를 관리할 필요성을 인식하고, 관리방안을 제시하는 것이다. 이를 위해 우선 보안 스트레스를 다룬 한국학술지인용색인(KCI) 등재 및 등재후보지 12편을 대상으로 문헌 연구를 실시하였다. 보안 스트레스를 다룬 연구는 2016년 이후부터 주로 설문조사를 활용한 통계적 분석기법을 적용하여 이루어졌으며, 크게 보안 스트레스에 영향을 미치는 요인, 보안 스트레스와 보안준수 의도의 관계, 보안 스트레스를 완화하는 요인을 다룬 연구로 구분되었다. 특히 조직공정성, 조직 차원의 기술 지원, 보안 피드백 등의 요인이 보안 스트레스를 완화할 수 있다는 점이 확인되었다. 다음으로 이와 같은 문헌 연구 결과를 국방보안환경에 적용함으로써 군 장병의 보안 스트레스 관리방안으로 보안 관련 공정성 인식 향상, 기술 지원 및 보안 피드백의 측면에서 제시하였다. 본 연구를 통해 우리는 군 장병 보안 스트레스의 관리 필요성을 인식하고, 이와 관련된 실무적인 방안을 검토하였다는 점에서 의의를 찾을 수 있다.