• 대한가정학회지
• /
• 제35권3호
• /
• pp.139-150
• /
• 1997

The purpose of this study was (1) to explore the difference in parental satisfaction regarding personal/family, work, and psychological variables of employment characteristics, and (2) to investigate the most effecting variables on the parental satisfaction. For this study, the working mother with children aged under 10 year were surveyed. The results of this study were as follow; (1) There were significant differences in the parental satisfaction according to work time, job preference, income, the difficulty of work life. However, working mother's personal and family variable were not found as the related variable. Psychological variables were correlated with parental satisfaction. (2) Maternal role efficiency, dual role conflict, flexibility of work, marriage year, income, psychological stress, expanded family, durations of occupation, spouse support significantly predicted parental satisfaction. Psychological variables were important in parental satisfaction of working mothers.

• Journal of Information Technology Applications and Management
• /
• 제20권4호
• /
• pp.249-261
• /
• 2013

Through smart work using by smart technologies, many organizations wish to change traditional working styles. Lots of organizations, however, wish to do work with smartness through adoption of smart work technologies, those are not sure whether smart work will be successful or not till now. Viewpoints of members concerning efficiency and effectiveness from smart work who operate the organizations may be different. Therefore, hopefully, this research tried to investigate whether differences among members of organizations by empirical and exploratory approach. Totally, 118 questionnaires had been collected and performed test of mean difference between groups. As a result, some items such as working place, working methods, flexible time and tension of smartwork showed significant differences among groups and non-leader and leader groups. And, furthermore, from this research I believe that we can have a few insights for successful smart working environment in organizations. For successful smart work, organizations have to try to overcome or minimize differences among members of organization.

• 대한안전경영과학회지
• /
• 제19권4호
• /
• pp.253-260
• /
• 2017

Due to dramatic changes in the trend of corporate management in economics, labor and government, companies are being asked to adapt creative and innovative organizational culture in order to keep sustainability. Under the circumstances, flexible working hour becomes one of very effective method for organization culture improvement. Recently, M company has introduced the new policy of working hours that employees can choose a couple of different time options depending on their personal situations. And it turns out to be very effective to work & life balance, increasing organizational vitality, improving efficiency of business and productivity, recruitment of core human resources, and prevention of deviation; both team and personal performance levels has significantly improved. Therefore, it is highly recommended to adapt flexible working policies for companies seeking for a long term, sustainable corporate vision.

• 한국의류산업학회지
• /
• 제9권2호
• /
• pp.237-242
• /
• 2007

The purpose of this study is to examine the functionality with improved pattern-design working uniform(protocol, P) and current working uniform(control, C). Movement functionality evaluation of improved pattern-design working uniform was carried out through sensory evaluation of working uniform. Movements for the sensory evaluation consisted of four types of up and down and horizontal movements of the shoulders, four types of waist movements and five types of knee movements. The results have been shown as follows: The sensory value of back girth, wrist, side seam area of the "P" with the posture of raising an arm forward up to $90^{\circ}$ and the maximal arm's vertical movement significantly improved compared to the "C". Therefore, it can be concluded that movement functionality was increased with the improved pattern-design working uniform in the respect of arm's up and down movement. Furthermore, for P, Movement functionality improvements were shown in P with arm's horizontal movement, waist bending movement, and knee movement. Current working uniform(C) is jumper-type which wa designed without consideration for movement functionality of the arms and legs. But Pattern-design uniform(P) which was developed in this study. Therefore, the more patterns development, the better movement functionality in working uniform. The improved movement functionality improvements in working uniform will provide not only personal pleasantness but also efficiency of productivity at construction sites. In respect of human body's movement, further study for improved working uniform is required.

• 대한간호학회지
• /
• 제4권3호
• /
• pp.57-62
• /
• 1974

This study was made to assess the possibility of predicting the nurses efficiency after graduation in college through their entrance examination and general attitude test results and their academic records. It was observed that generally nurses with the highest academic records were the most efficient in their work after graduation while those with high general aptitude test results came next although their college entrance examination results were comparatively low. Therefore it could be deduced from this study that college entrance examination results alone could not be depended upon in predicting the nurse's working efficiency after bet graduation.

• 설비공학논문집
• /
• 제14권10호
• /
• pp.801-810
• /
• 2002

We have analyzed a combined cycle employing refrigerant Rankine cycle and simple refrigeration cycle with one working fluid. Although this cycle shows promising aspects such as simplicity, it does not have a good efficiency to compete with the other existing technologies because of high temperature at the exit of the turbine. However, by introducing a recuperator, it is found that the cycle efficiency can be improved up to the level much higher than other technology＇s efficiency.

• 육아정책연구
• /
• 제12권3호
• /
• pp.3-27
• /
• 2018

본 연구는 유치원 교사의 하루 업무수행의 경향성을 분석하고, 업무시간 운영의 실제와 효율성에 대한 인식을 알아보기 위해 공사립유치원 교사 273명을 대상으로 설문조사를 실시하였다. 연구결과, 첫째, 유치원 교사들은 단위시간(30분)별로 평균 1.41개의 업무를 수행하였으며, 업무 내용에 있어 공립과 사립 간에 차이가 있었다. 둘째, 수업준비시간이 부족한 이유로 공립 교사들은 행정업무가 많아서, 사립 교사들은 행사나 공동 업무가 우선시 되어서를 꼽았고, 수업 외 업무에서 많은 시간을 소비하여 인력지원이 필요한 업무로 공립 교사들은 사무관련 업무, 사립 교사들은 행사관련 업무를 꼽아 차이를 보였다. 셋째, 업무시간의 효율적 운영과 관련해서는 공립과 사립 모두 업무량 과다를 매우 심각하게 보았고, 더불어 공립은 보조인력 부족, 사립은 행사관련 업무 과다 및 관리자의 리더십을 문제시 하였다. 이러한 결과는 유치원 교사의 업무량 적정화, 수업준비시간의 확보 및 업무 효율화, 기관유형에 맞는 지원이 필요함을 시사한다.

• 한국수소및신에너지학회논문집
• /
• 제26권6호
• /
• pp.590-599
• /
• 2015

In this paper a performance analysis is carried out based on the first and second laws of thermodynamics for heat exchanger in organic Rankine cycle (ORC) for the recovery of low-temperature finite thermal energy source. In the analysis, effects of the selection of working fluid and pinch temperature difference are investigated on the performance of the heat exchanger including the effectiveness of the heat exchanger, exergy destruction, second-law efficiency, number of transfer unit (NTU), and pinch point. The temperature distribution are shown depending on the working fluids and the pinch temperature difference. The results show that the performance of the heat exchanger depends on the pinch temperature difference sensitively. As the pinch temperature increases, the exergy destruction in the evaporator increases but the effectiveness, second law efficiency and NTU decreases.

• 한국유체기계학회 논문집
• /
• 제16권3호
• /
• pp.10-17
• /
• 2013

The organic Rankine cycle has been widely used to convert the renewable energy such as the solar energy, the geothermal energy, or the waste energy etc., to the electric power. Some previous studies focused to find what kind of refrigerant would be a best working fluid for the organic Rankine cycle. In this study, R245fa was chosen to the working fluid, and the cycle analysis was conducted for the output power of 30kW or less. In addition, properties (temperature, pressure, entropy, and enthalpy etc.) of the working fluid on the cycle were predicted when the turbine output power was controlled by adjusting the mass flowrate. The configuration of the turbine was a radial-type and the supersonic nozzles were applied as the stator. So, the turbine was operated in partial admission. The turbine efficiency and the optimum velocity ratio were considered in the cycle analysis for the low partial admission rate. The computed results show that the system efficiency is affected by the partial admission rate more than the temperature of the evaporator.

• 한국정보통신학회논문지
• /
• 제3권2호
• /
• pp.447-453
• /
• 1999

In MHD power generation system, enthalpy of the working gas is convened to electric power directly through expansion in generator channel. It means that electric power can be generated without a moving mechanical linkage such as turbine blades. The principle of MHD generation is based on Faraday'law of induction that eletromotive force(u$\times$B) is generated when the working gas of velocity u flows a channel in which magnetic field of strength(B) exists. In this paper, helium gas seeded with cesium is used as working gas. There are two types of generator in MHD generation; linear type faraday and disk type hall generator. Rogowski coils having the bandwidth of the 100(Hz) ~ 20(kHz) were used for measuring current flowing MHD disk channel. Optimum load resistor value of the MHD generator studied was 2.5[$\Omega$]. Disk type hall generator's generation performance is the main target of this paper, which superiors to linear type Faraday generator in many points. Isentropic efficiency and enthalpy extraction rate of disk type shock tube driven hall generator is discussed here.