• Journal of Family Resource Management and Policy Review
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• v.24 no.2
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• pp.1-21
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• 2020

The purpose of this research was, first, to classify work-life satisfaction among married wage workers aged 20-59 years into several distinct types based on two dimensions of work and life, using data from the 20th(2017) wave of the Korean Labor & Income Panel Study. Second, the study aimed to assess the differences in socio-demographic characteristics (sex, age, educational level, average monthly income), and workplace-related variables (weekly working hours, full-time employment, job stability, business type, family-friendly leave policies) by work-life satisfaction type. Accordingly, four types of work-life satisfaction were identified: work-life satisfaction, work-life dissatisfaction, work satisfaction, and life satisfaction. There was a significant difference in the type of work-life satisfaction among married waged workers based on sex, age, educational level, and average monthly income. Additionally, there was a significant difference in the type of work-life satisfaction for all workplace-related variables, namely, weekly working hours, full-time employment, job stability, business type, and family-friendly leave policies. In particular, proportionally higher values of work-life satisfaction were evident among the workers in companies with family-friendly leave policies such as paid leave, menstrual leave, maternity leave, childcare leave, and family events leave, whereas there was a high rate of work-life dissatisfaction among the workers in companies without family-friendly leave policies.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.04a
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• pp.369-372
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• 2008

This study analysis fundamental properties of high-strength concrete corresponding to W/B ratio for suggested table of high strength concrete, mixed with premixed cement. As a result of this study, the amount of using air entraining and high-range water reducing agent for intended slump flow and air content decreased as W/B increased, and the setting time corresponding to the W/B ratio delayed as W/B ratio increased except 20% W/B ratio. The compressive strength according to W/B ratio decreased as W/B ratio increased, and there was no great deferent as the intended slump flow. Also it could possible to use this study at work as the correlation coefficient is high enough as 0.9646 substituting B/W and compressive strength for the regression formula.

• Journal of the Korean Institute of Gas
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• v.21 no.6
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• pp.15-22
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• 2017

The pressure safety valve is very important device for securing the safety in the facilities which is operated by high pressure gases. The performance test should be periodically inspected by relate law because the failure of pressure safety valves might be main causes of serious accidents in the industrial fields. Shop test is mainly use for inspecting the performance test of pressure safety valves but the test method is not to be a solution for securing the safety. So, the development of alternative method is required. In this paper, there is a limit to securing the safety if the performance test is with just shop test. The limitation is checked from analysis result based on performance test results of pressure safety valves. The necessity for introducing the in-service test is reviewed to surmount the limitation. As a result, in-service test method should be developed and introduced to improve the inspection efficiency and economical loss. Also, it can be reduce the risk level.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.2011-2015
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• 2010

비점오염원에 의한 수질오염은 지표수 오염과 지하수 오염으로 분리될 수 있는데 보통 지하수는 지표수에 비하여 수질이 양호 하다고 여겨지만 오염된 하천 주위의 지하수 오염이 심각할 수 있다. 이러한 지하수에 의한 오염원을 산정하고 분석하기 위해 여러 가지 수문관련 공식이나, HSPF, MODFLOW, SWAT 모형 등이 사용되고 있는데 이 중, SWAT 모형은 다양한 작물 및 재배방법이 지표수 및 지하수 수질에 미치는 영향을 유역단위로 평가가 가능하여 국내 외 에서 널리 활용되고 있다. SWAT 모형은 소유역별 수문학적 반응단위인 HRU를 이용하여 유역 내 수문 및 수질을 평가하는데 소유역내 HRU의 공간적인 정보를 고려하지 않는 준 분포형 모형으로 다양한 영농방법이 지표수 및 지하수에 미치는 영향을 공간적으로 분석 하는데는 한계가 있다. 따라서 본 연구에서는 이러한 SWAT 모형의 단점을 개선하여 공간적으로 분석할 수 있는 SWAT HRU Mapping module을 개발하였고 강원도 평창군 대관령면 횡계2리 지역에 적용하여 지하수 함양량 및 대수층 유입 $NO_3$-N 부하량 및 농도를 분석하였다. 적용결과, 횡계2리 유역의 2006년 대수층 유입 $NO_3$-N 부하량 및 농도를 비교하면 일반적으로 농경지에서의 대수층 유입 $NO_3$-N 부하량이 큰 것으로 나타났고, 대부분 농경지에서 대수층으로 유입되는 $NO_3$-N의 농도가 산림에 비해서 상당히 높은 것으로 분석되었으며 2007년의 결과도 비슷한 경향이 나타났다. 본 연구의 결과에서와 같이 같은 밭이라 하더라도 재배되는 작물의 종류 및 시비량 등에 따라 대수층으로 유입되는 오염부하에는 상당한 영향이 있을 수 있으며, 또한 재배 작물과 토양 특성에 따라 $NO_3$-N이 대수층으로 유입될 것으로 판단된다. 따라서 본 연구에서 개발된 HRU Mapping Module은 유역에서의 수질 개선시기저유출을 통한 오염원의 시공간적 분석을 하는데 매우 유용하게 활용될 수 있으리라 판단된다.

• Journal of the Korea Convergence Society
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• v.8 no.6
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• pp.131-138
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• 2017

The purpose of this study is to investigate the effects of incremental oral health care perceptions and experiences on oral health care performance by analyzing the results of incremental oral health care management for adults. As age increased, incremental oral health care experience is significantly higher. The results have shown that as age increases, interest in incremental oral health care becomes even higher. And, the group using secondary oral care products has significantly higher incremental oral care experience(p<0.05). Also, those who visit dental clinic regularly continue to experience incremental oral health care(p<0.05). In addition, the group that had experienced preventive dental services continued to be significantly highly relevant to oral health care(p<0.05). Based on the results of this study, it is possible to analyze the experience and influence of incremental oral health management and it can be used as basic data for the construction of incremental oral health care program in dental clinic.

• Journal of Environmental Health Sciences
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• v.36 no.5
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• pp.373-382
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• 2010

A number of recent studies have shown that occupational stress is closely associated with increased fatigue and decreased job satisfaction. This study was designed to assess stress in workers in the field of EIA (environment impact assessment) from July 2009 through september 2009, and questionnaires were uesd to analyze the stress scores and identify the primary factors influencing stress in this occupation. The number of respondents was 272 working in the Capital (Seoul and Kyunggido), Chungcheongdo, Jejudo area. A structured questionnaire was used to evaluate the participants' socio-demographics, job-related factors, health-related behaviors, occupational stress, reaction factor (self-perceived fatigue, job satisfaction) and buffer factor (social support). Occupational stress and self-perceived fatigue were assessed using the Korean Occupational Stress Scale-Short Form (KOSS-SF) and the Multidimensional Fatigue Scale (MFS), respectively. The analysis revealed a strong correlation between occupational stress, job satisfaction, and social support, with occupational stress being associated with an increased risk of fatigue and decreased job satisfaction. In the multiple regression analysis(stepwise), the main factors influencing occupational stress were found to be job satisfaction, supervisor, fatigue, working time, no. of personnel, career. The results of this study suggest that occupational stress is a determinant predictor of self perceived fatigue and job satisfaction. Thus, a strong recommendation is made for a stress management program for reduction of occupational stress, and for the development of relevant experts on the health and quality of life of environment impact assessment workers.

• Journal of Embryo Transfer
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• v.18 no.3
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• pp.227-235
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• 2003

한우의 mt DNA cytochrome oxidase subunit I, II, 및 III complex지역의 유전적 다형현상을 제한효소를 이용하여 검출하였다. PCR primer 6종에 대하여 20가지 제한효소를 처리하였으며, Pst I, Pvu II, Rsa I, Eco RI, Bgl II, and Msp I 제한효소를 사용하여 유전적 변이를 검출하였다. 검출된 변이체와 한우의 성장과의 관련성을 조사한 결과 cytochrome oxidase subunit III complex 지역의 유전염기서열을 근거로 제작한 primer Mt9 좌위에서 제한효소 PvuII를 이용한 절단형과 체중형질 인 WT15(P<0.05) 및 WT18(P<0.01)에서 고도의 유의성이 관찰되었다. 아울러 , Mt9-Pvu II(P=0.07), Mt6-Bgl II(P=0.05), and Mt8-Rsa I(P=0.05) 좌위 또한 WT9, WTl5, and WT15에서 각각 통계적 유의성이 관찰되었다. 따라서 본 결과는 cytochrome oxidase subunit III complex segments가 candidate gene으로서 기초적 유전정 보 제공은 물론 유전적 개량을 위해 사용될 수 있을 것으로 사료된다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.579-582
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• 2004

File share system in client/server method requires server of High performance and capacity and this server is very expensive and management is complex and is been influenced much to flatform. Also, extension of correct memory or hard drive etc. causes a lot of expenses to server. While, may minimise human who happen by buying high-capacity server by dispersing file public ownership way unuse expensive server in client/serve. way who put up files in PC(client) to a sewer and manage files and make use of only client computers because public ownership of data and government official in P2P(peer to peer) environment, waste of material resources. Many people are interested to P2P by such reason, researches that use P2P to connection field to be Moba that have Gakgwangbatgo current are gone vigorously.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.12
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• pp.3001-3008
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• 2013

To diagnose the cardiac valve abnormalities using analysis of phonocardiogram, first of all, accurate detection of S1, S2 components is needed for heart sound segmentation. In this paper, a new method that uses the third moment characteristics of an envelope of the PCG is proposed for accurate detection of S1 and S2 components of the heart sound with cardiac murmurs. The envelope of the PCG is obtained from the short-time energy profile, and its third moment profile with slope information is used for accurate time gating of the S1, S2 components. Experimental results have shown that the proposed method is superior to the conventional second moment method for detection of S1 and S2 regions from the heart sound signals with cardiac murmurs.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.3
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• pp.83-90
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• 2019

Recently, the need to prevent or treat cognitive impairment in older adults has been arising. In particular, they tried to diagnose MCI as an early stage of Alzheimer's disease and to delay the progression to dementia through training cognitive function. Most of cognitive function training have been manufactured to game contents which related to several cognitive function, and it needs to be verified quantitatively whether subjects are paying attention to cognitive function training. Thus in this study, we measured and analyzed EEG signals while performing attention training game contents. As an analysis method, we utilized CI, which shows how much they are focusing on, and RI, which shows how stable they are. The result of this study can be seen that all the subjects' CI were increased, which means that the subjects performed game contents with concentration.