• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.05a
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• pp.675-676
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• 2012

• Proceedings of the KSCN Conference
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• 2003.05a
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• pp.100-100
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• 2003

외식산업은 노동집약적 산업인 동시에 인적서비스 그 자체가 하나의 상품으로서 중요시되므로 전문적 지식과 기술을 가지고 있는 유능한 인적자원의 확보와 유지가 중요시된다. 그러나 외식산업의 인적자원의 중요도에 비해 양질의 인력수급이 이루어지고 있지 않다. 이러한 인력부족 및 이직문제는 많은 비용의 지출, 근로자의 사기 저하 등 부정적인 측면을 가지고 있으며, 무엇보다 중요한 것은 이직에 따른 서비스질의 손상의 문제이다. (중략)

• Proceedings of the KSR Conference
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• 2004.06a
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• pp.921-926
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• 2004

In this paper, a nonlinear structural damage identification algorithm is derived by taking into account the non-linearity of damage. The structural damage identification analyses are conducted by using the direct method and the Newton-Raphson method. It is found that, the Newton-Raphson method in general provides the better damage identification results when compared with the results obtained by the direct method.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.239-242
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• 2011

NFPA-805 불확실도 분석 요건에 따른 경수형 원전 스위치기어실 모터제어반의 화재시나리오에 대한 입력변수 불확실도 평가를 수행하였고 이를 통해 화재모델링의 불확실도 평가방안을 제시하였다. 화재모델링은 FDS5를, 불확실도분석은 MOSAIQUE를 사용하였고 Wilks 방법에 근거하여 93회의 latin hypercupe 샘플링을 수행하였다. 스위치기어실 케이블의 최소 평균손상시간은 212초로 예측되어 화재발생시 스위치기어실의 화재진압은 약 4분 이내에 이루어져야 하는 것으로 확인되었다.

• The Korean Journal of Rehabilitation Nursing
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• v.10 no.2
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• pp.108-115
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• 2007

Purpose: This study was to investigate the effects of respiratory rehabilitation training on the respiratory functions of hospitalized cervical spinal cord injury patients. Methods: One group pre and post test design was used. Subjects were 20 cervical spinal cord injury inpatients of the national rehabilitation center. Training program consisted of air cumulation training, manual assisted coughing training, and abdominal breathing. Trained rehabilitation nurse implemented 20 minutes program twice a day for 4 weeks. Respiratory function was measured as peak coughing flow rate, and perceived respiratory difficulty after activity on wheel chair for 30 minutes and during speaking and singing. Perceived respiratory difficulty was measured with modified Borg scale. Also content analysis was done with the result of open ended question about subjective feeling about training. All variables were measured 3 times before, 2weeks and 4 weeks after the program. Results: Peak coughing flow rate significantly improved after compared to before training. Also all three perceived respiratory difficulty variables decreased significantly after training. In the content analysis, 'it's easier to cough up phlegm' was the most frequent answered subjective feeling. 'Sound at speaking and coughing became louder', 'respiratory volume increased', and 'comfortable chest feeling' were frequent answered subjective feeling, in order. Conclusion: Although it is preliminary since no control group, respiratory rehabilitation training was found to be effective to improve respiratory function in terms of peak coughing flow rate, perceived respiratory difficulty, and subjective feeling. It is necessary further systemic research to investigate the effects of respiratory rehabilitation training.

• Journal of Korean Academy of Nursing
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• v.26 no.3
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• pp.544-555
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• 1996

The Study of the Development of Efficacy Expectation Promoting Program and it's Effect for Cervical Spinal Cord Injury Patients. This study was conducted to develop on Efficacy Expectation Promoting Program (EEPP) based on the Self-Efficacy Theory of Bandura for Cervical Spinal Cord Injury Patient(CSCIP), and invesgated it's effects. The research process of this study was done in three phases. The first phase was an analysis of the patient's life experience. The second phase was to develop an Efficacy Expectation Promoting VTR Tape Program(EEPP) that reflected the life experience of the CSCIPS. EEPP was composed Performance Accomplishment and Vicarious Experience with a home visitation program based on Verbal Persuation, which are all induction modes of efficacy expectation of Bandura. The third phase was an experimental stage. The experimental design was an AB Single Experimental Design. Research subjects were three CSCIPs (cervical area 5-7). The data was collected from 24th June to 22th Oct, 1995. The result of the experimentation showed great increase self-efficacy score, subject self-care score, all competence of daily living score, and social activities. In conclusion, it was found that an EEPP is an effective home nursing intervention technique for rehabilitation of CSCIPs.

• Nuclear Engineering and Technology
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• v.25 no.4
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• pp.515-528
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• 1993

In a Passive PWR, the successful actuation of Automatic Depressurization System (ADS) is essentially required so that no core damage is occurred following small LOCA. But it has been shown in the previous studies that Core Damage Frequency (CDF) from small LOCA is significantly caused by unavailability of ADS. In this study, the design vulnerabilities impacting the ADS unavailability have been identified and the design improvement items have been proposed through the system reliability assessment using the fault tree methodology The impacts on CDF according to the change of system unavailability have also been analyzed. In addition, small LOCA simulation using RELAP5/MOD3 code has been performed to show the thermal-hydraulic feasibility of the suggested design enhancements.

• Journal of KIISE:Software and Applications
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• v.37 no.6
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• pp.417-429
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• 2010

Reversible watermarking inserts watermark into digital media in such a way that visual transparency is preserved and then enables to restore the original media from the marked one without any loss of media quality. This watermarking can be applied to quality-sensitive imaging such as medical imaging, military imaging, remote-sensing imaging, and precious artwork, where the original media should be preserved during image processing and analysis. In this paper, a reversible image watermarking technique that embeds message bits by modifying the differential histogram of adjacent pixels is presented. In order to satisfy both high embedding capacity and visual quality, the proposed technique exploits the fact that adjacent pixels in the image have highly spatial correlation. Also, we prevent overflow/underflow problem and salt-and-pepper artifacts by employing a predicted error compensation scheme. Through experiments using various test images, we prove that the presented technique provides perfect reversibility and high embedding capacity, while maintaining the induced-distortion low.

• Journal of Ocean Engineering and Technology
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• v.27 no.5
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• pp.63-69
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• 2013

The mooring lines of a floating type offshore plant are known to show wide banded and bimodal responses. These phenomena come from a combination of low and high frequency random load components, which are derived from the drift-restoring motion characteristic and wind- sea, respectively. In this study, fatigue models were applied to predict the fatigue damage of mooring lines under those loads, and the result were compared. For this purpose, seven different fatigue damage prediction models were reviewed, including mathematical formula. A FPSO (floating, production, storage, and offloading) with a $4{\times}4$ spread catenary mooring system was selected as a numerical model, which was already installed at an offshore area of West Africa. Four load cases with different combinations of wave and wind spectra were considered, and the fatigue damage to each mooring line was estimated. The rain flow fatigue damage for the time process of the mooring tension response was compared with the results estimated by all the fatigue damage prediction models. The results showed that both Benasciutti-Tovo and JB models could most accurately predict wide banded bimodal fatigue damage to a mooring system.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2017.10a
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• pp.147-149
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• 2017

경수 용기재배는 뿌리분의 손상 없이 식재를 할 수 있어 이식 후 활착이 용이하고, 식재시기의 계절적 제약을 적게 받아 부적기 이식 시 하자를 현저히 줄일 수 있다. 용기재배 시 용기 내 토양온도는 토양의 물리화학반응과 식물의 생육 및 물과 양분의 흡수에 영향을 주는 중요한 토양환경요소의 하나이다. 목본성 식물 용기재배의 경우 제한된 근권부의 토양이 외부기온에 의해 불안정할 수 밖에 없다. 재배용기의 유형에 따른 지온의 변화를 측정한 결과 지중재배형의 용기가 단열성능이 큰 것으로 나타났다. 지상재배 방식의 용기 중에서는 Bag in Pot-루트 스커트 형의 용기가 단열성능이 큰 것으로 나타났으며, 이는 지중재배방식의 용기와 유사한 용기 내 지온 안정화 정도를 보이는 것으로 나타났다. 향후 후속 연구에서는 본 연구를 토대로 디자인 개발된 용기의 시제품을 제작하여 테스트하고, 재배농가에 적용가능성을 검토하고자 한다.