• Journal of information and communication convergence engineering
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• 제7권2호
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• pp.209-214
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• 2009

The employment of the induction generator is preferable in the natural energy utilization by the minimum maintenance and the mechanical robustness, Another merit is also expected when it is connected to the power network system, because constant-voltage and constant frequency (CVCF) power generation is easily realized in spite of the variation of the rotor speed. However the induction generator needs much amount of the reactive power that reduces power factor in the primary side. The improvement of power factor in the primary side requires large VAR compensator, this point is solved, the merit of the induction machine as a main generator will become more established. This paper proposes a novel approach where the secondary is controlled by a PWM inverter not only to get CVCF power but also to improve the primary power factor. Basically the inverter is controlled so that the field current is supplied from the secondary side in this approach. The required capacity of the inverter is small, because only the slip power is controlled in the secondary side. In the experimental system where the sea wave torque simulator is used, the power factor is well improved by the microcomputer controlled PWM inverter.

• 대한가정학회지
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• 제39권7호
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• pp.59-70
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• 2001

The study was designed to heap reduce daily household waste and promote the recycling of society's resources. the focus is on promoting environment-friendly activities and slevating a sense of nature-conscious domestic welfare, as well as providing wars to encourage garbage-savvy shopping, waste disposal by content and recycling. The thesis utilized demographic data obtained from 225 female homemakers and includes results based on frequency, ratio, mean, Duncan's Multiple range Test and Multiple Regression analysis. The main results are as follows: 1. Environmental consciousness appears to be higher than that of the adjustment of purchases to reduce waste and of recycling. Conversely more action seems to be taken on the waste disposal separation established since the launch of the volume-based waste collection fee system than on environmental education. 2. Homemakers with relatively higher environmental consciousness reciprocate with correspondent shopping habits, waste disposal eparation and recycling. Factors that influence daily waste reducing action include environmental consciousness homemaker employment status and the type of residence. 3. Activities reducing daily domestic wastes appear to effect a meaningful variable in explaining a sense of environmental welfare. The more respondents practice related shopping habits, waste disposal separation or recycling the more they recognize their living environment as desirable.

• 지역사회간호학회지
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• 제15권4호
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• pp.566-576
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• 2004

Purpose: The study was to determine variables related to the depressive impact of emotional labor among workers. Method: 443 respondents were surveyed through the NIOSH generic job stress questionnaire from December 1st through December 30th, 1999. Results: 1. Employment type and job insecurity showed a significant relationship with developing depression, load and role ambiguity. 5. Intervention programs and effective communication networks are needed to help workers cope with their job stress in a positive manner. Conclusions: First, given the correlation between the frequency of avoiding tactics and depression levels, an intervention program is needed to help workers cope with their job stress in a positive manner, Lastly, because role ambiguity was one of the main causes of depression among workers who perform emotional labor, establishing an effective communication network is important to make communication flow within the workplace clear and open.

• 대한간호학회지
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• 제40권6호
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• pp.852-862
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• 2010

Purpose: This study was done to investigate differences in health behaviors by job stress level in male and female workers in a large-sized company. Methods: Participants were 576 male and 228 female workers who completed questionnaires. Job stress was measured using the 'Short Form Korean Occupational Stress Scale (SF-KOSS)'. Health behaviors included smoking, alcohol consumption, regular exercise, and diet. Frequency, mean, SD, chi-square test, and multivariate logistic regression using SAS version 9.1 were used to analyze data. Results: Smoking, drinking and regular exercise rates were not different by job stress level in male or female workers. Only regular diet was significantly different by job stress level in male and female workers. From multivariate analysis, the alcohol consumption rates for female workers differed by marital status. Regular exercise rate was significantly related to age for male workers and type of employment for female workers. After adjusting for demographic and work-related characteristics, regular diet significantly differed by shift work for male workers and marital status and shift work for female workers. Conclusion: The findings of the study indicate that nursing interventions should be developed to manage job stress to improve diet habits for male and female workers in large-sized companies.

• 한국주거학회논문집
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• 제27권6호
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• pp.95-104
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• 2016

The purpose of this research is to compare housing wealth effects of home-owning single income couples (SIC) and dual income couples (DIC) on their non-durable consumption and to assess the effects by location, age groups, housing structure type, debt-to-asset ratio and employment status. Using the Korean Labor and Income Panel Study (KLIPS) of 2014, this empirical study identified 1,198 SIC households and 1,044 DIC households, and employed multiple regression analysis. The main results reveal that the difference of financial portfolios between SIC and DIC households was little but housing wealth effects were stronger among SIC households than DIC counterpart. It's evident that housing wealth effects were conspicuous for SIC and DIC households who were headed by wage earners aged over 40s, and resided in apartment outside the Seoul Metropolitan Area. However, household debt became a determinant in contradicting housing wealth effects of SIC and DIC households. While the household financial dimension was in proportion to income, DIC households didn't gain much financial security due to increasing expenditure. Further, this research imply that liquidity constraints explicitly posed a more serious threat to SIC households whose dependence on housing asset is larger than their counterpart.

• 노동경제논집
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• 제40권2호
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• pp.69-87
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• 2017

본 연구는 "한국교육고용패널" 조사를 이용하여 학자금 대출이 대졸자 직업탐색 기간에 미치는 영향에 대해 추정하였다. 특히 학자금 대출이 그 유형에 따라 대출의 보유자에게 상이한 영향을 미칠 가능성을 고려하였다. 추정 결과에 따르면, 첫째, 학자금 보증 대출의 경우 비대출자에 비해 상대적으로 더 긴 직업탐색 기간을 갖는 것으로 나타났으며, 이는 원리금 상환을 고려하여 더 높은 임금을 제안받기 위한 선택일 개연성이 있다고 사료된다. 둘째, 취업 후 상환 학자금 대출의 경우 비대출자에 비해 상대적으로 더 짧은 직업탐색 기간을 소비할 뿐만 아니라 역시 더 낮은 임금을 받는 것으로 나타났다. 이와 같은 사실은 이 대출의 보유자가 취업 시까지 납부할 이자는 유예되지만, 축적되는 이자 부담과 여타 학자금 대출 제도에 비해 상환 계획이 짧다는 점 등에 부담을 느끼는 심리적 부담에 의한 역기능이 발생한다고 해석할 수 있다.

• 한국식품영양학회지
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• 제31권1호
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• pp.173-184
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• 2018

This research was conducted to examine coffee shop customers' preference and satisfaction by different types of promotion. Research samples ware adults with experience of any form of coffee shop promotion (n=209). Descriptive statistics, Chi-square, t-test and one-way ANOVA were used to analyze the relations among variables. Results showed that 'free coupon' was the most preferred ones. SNS was the most frequently used search method for coffee shop coupon promotion information. The most preferred event promotion was 'freebies', and preference levels were significantly different by age and employment status. 'Barista experience' was ranked highest in preference among cultural experience events. Drinking coffee was the most important purpose of visiting coffee shops, especially among unemployed, twenties, and women respondents. Coupon was evaluated the highest in usefulness and satisfaction among the three promotion methods. Event and cultural experience were preferred more by respondents in their twenties than those in their thirties. Results indicated that all promotion strategies are effective for increasing customer satisfaction and for inducing revisit. Findings also showed that preference for promotion was affected by customer characteristics such as age and gender. Therefore, coffee shops should consider using the most effective and attractive promotion strategy for their target market, while maintaining a consistent service quality level to fulfill customer expectation.

• 가족자원경영과 정책
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• 제12권3호
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• pp.59-79
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• 2008

In this study, the investigator examined employees' work-family conflict, and analyzed its relationship with family health, to clarify the two-way influence of work-family and to verify the influence of a family friendship system based upon work-family compatibility and a healthy family. Data from 379 married female and male corporate employees were collected. Collected data were analyzed on the SPSS WIN 12.0 program. Study findings are as follows: First - For the individual, in domain variables of work-family conflict according to socio-demographic characteristics, gender has a significant influence upon strain-based conflict, family interference with work, and time-based conflict. Second - Work domain variables such as occupation, career, employment type, and working hours have a significant influence upon work interference with family, while career, and a working couple have a significant influence upon family interference with work. Finally - average housework hours and children have a significant influence upon work interference with family, whereas the length of a marriage, the average housework hours, and a housework helper have a significant influence upon family interference with work.

• 산업진흥연구
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• 제1권1호
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• pp.35-40
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• 2016

본 연구는 패널 데이터를 분석하여 대졸 청년층의 직장만족 요소가 이직준비 여부에 미치는 영향을 검증하였다. 연구결과 이직준비 여부에 유의한 영향을 미치는 요소는 전반적 직장만족, 개인의 발전가능성, 자율성/권한, 현 직장 월평균 근로소득(p<.001), 근무환경, 근무시간, 전공도움정도(p<.01), 인사체계, 고용안정성, 복리후생(p<.05) 순으로 영향력이 높았다. 또한 성별, 혼인상태, 학교유형(국공사립), 전공계열, 대학유형, 학교소재권역, 고용형태(종사상지위, 정규직여부) 등에 따른 이직준비 여부의 차이가 나타났다. 본 연구는 대졸 청년층의 직장만족도가 이직준비 여부에 미치는 영향을 분석함으로써 청년층 근로자의 이직을 줄이고 안정적인 직장 정착을 높이기 위한 고용정책을 펼치는 데 시사점을 제공한 것에 그 의의가 있다.

• Journal of Preventive Medicine and Public Health
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• 제52권2호
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• pp.72-81
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• 2019

Objectives: The current study presents a new conceptual framework for physician-induced demand that comprises several influential components and their interactions. Methods: This framework was developed on the basis of the conceptual model proposed by Labelle. To identify the components that influenced induced demand and their interactions, a scoping review was conducted (from January 1980 to January 2017). Additionally, an expert panel was formed to formulate and expand the framework. Results: The developed framework comprises 2 main sets of components. First, the supply side includes 9 components: physicians' incentive for pecuniary profit or meeting their target income, physicians' current income, the physician/population ratio, service price (tariff), payment method, consultation time, type of employment of physicians, observable characteristics of the physician, and type and size of the hospital. Second, the demand side includes 3 components: patients' observable characteristics, patients' non-clinical characteristics, and insurance coverage. Conclusions: A conceptual framework that can clearly describe interactions between the components that influence induced demand is a critical step in providing a scientific basis for understanding physicians' behavior, particularly in the field of health economics.