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Prediction of retention of uncharged solutes in nanofiltration by means of molecular descriptors

  • Nowaczyk, Alicja;Nowaczyk, Jacek;Koter, Stanislaw
    • Membrane and Water Treatment
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    • 제1권3호
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    • pp.181-192
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    • 2010
  • A linear quantitative structure-property relationship (QSPR) model is presented for the prediction of rejection in permeation through membrane. The model was produced by using the multiple linear regression (MLR) technique on the database consisting of retention data of 25 pesticides in 4 different membrane separation experiments. Among the 3224 different physicochemical, topological and structural descriptors that were considered as inputs to the model only 50 were selected using several criteria of elimination. The physical meaning of chosen descriptor is discussed in detail. The accuracy of the proposed MLR models is illustrated using the following evaluation techniques: leave-one-out cross validation procedure, leave-many-out cross validation procedure and Y-randomization.

NbFeB 분말사출성형에소 저잔류탄소를 위한 결합제 및 탈지거동 (A binder system for low carbon residue and debinding behaviors in injection molding of NdFeB powder)

  • 최준환
    • 한국분말재료학회지
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    • 제6권2호
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    • pp.132-138
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    • 1999
  • A new binder system and debinding process for low carbon residue in the injection molding of Nd(Fe, Co)B powder are investigated. In the injection molding of magnetic materials, it is demanded to reduce carbon residue which deteriorates their magnetic properties. The binder system developed is composed of polyethylene glycols (PEGs) and polypropylene (PP). PEG was selected as a major binder is component to be extracted in a molecular state by solvent extraction in ethanol, which step would leave no residue. PP was selected as a minor binder component to be subsequently removed by thermolysis which step would leave carbon residue. The behaviors of solvent extraction with the variations of PEG molecular weight, temperature, and time were examined. The dependency of residual carbon content on thermolysis atmosphere was also studied. Opened pore channels introduced in a green body by the solvent extraction and microstructures of the sintered magnets were observed using SEM.

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기업의 가족친화제도가 기혼 직장여성의 출산의향에 미치는 영향: 여성의 연령 집단별 비교 (The impact of family-friendly policies in the workplace on the childbearing intention of married-employed women: A comparison of two age groups)

  • 고선강
    • 가족자원경영과 정책
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    • 제20권3호
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    • pp.151-171
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    • 2016
  • The purpose of this study was to identify the relationship between family-friendly policies in working places and the childbearing intentions of married-employed women. The analysis included 415 married working women from the 2012 wave of the Korean Longitudinal Survey of Women and Family. The factors influencing the childbearing intentions of the women were age, education, number of children under age 18, childbirth leave, childcare facilities, and flextime. The women whose work-places provided childbirth leave had stronger childbearing intentions. The women under age 35 had stronger childbearing intentions when their work-places had flextime policies. In conclusion, my recommendation is that the government should pay more attention to the micro-personal factors, such as the Family-friendly Workplace Practices proposed in this study, when executing policies to reverse the current trend of low fertility.

가족친화지수 추세분석에 관한 연구 (A Study of the Transition of the Family-Friendly Index)

  • 정영금;윤소영;조성은
    • 가족자원경영과 정책
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    • 제18권2호
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    • pp.17-35
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    • 2014
  • This study analyzes the transition of the Family-Friendly Index from 2007 to 2012. This index was developed using a questionnaire survey that is distributed to listed companies and public institutions every year by the Ministry of Gender Equality & Family(MOGEF) and the Family-Friendly Support Center. The Family-Friendly Index contains an introduction to and the practical use of family-friendly regulations and programs, such as flexible working systems, parental leave, family leave, EAP, and family-friendly culture. The number of companies involved in the Family-Friendly Index is increasing every year, and has increased from 41.7 in 2007 to 58.9 in 2012. In particular, family-friendly companies testimonialized by the MOGEF are using more family-friendly programs than other company.

젊은 기혼여성의 출산 후 취업연속성 결정요인 (Factors That Decide the Job Continuity of Young Mothers)

  • 김지경
    • 대한가정학회지
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    • 제42권3호
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    • pp.91-104
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    • 2004
  • This study analyzes the critical factors that decide the job continuity of married women after one of their life events, childbirth. It is based on the employment data from KLIPS(Korea Labor and Income Panel Study). Vols. 1-4, having observed 128 young mothers who gave birth to children after 1997. The analysis showed that women's employment after their maternity leave depend on whether new mother return to their previous job or not. The Following results are obtained: First, women's age, education, availability of caretakers for their children, and family income have a positive effect on the women's return to their pre-leave employers after childbirth. Second, professional or office work and the frequency of job transition before childbirth have a positive effect on women's employment in new jobs after childbirth. Third, women's age, availability of caretakers of their children, and professional or office work are critical factors that have a positive effect on women's job continuity after childbirth, whereas the frequency of job transitions has a negative effect on employment for women.

Employees' Intention to Leave Job: The Case of Micro Finance Institution

  • Rabin Subedi;Surendra Neupane;Raju Ram Adhikari
    • Journal of Information Technology Applications and Management
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    • 제28권5호
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    • pp.51-60
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    • 2021
  • The main purpose of this study is to examine the factors that influence the employee's intention to leave the current job. A descriptive survey design was conducted and primary data were collected by using questionnaire. The study was based on random sampling; a sample of 200 was drawn from the employees who work in different micro finance institutions in Nepal. For the data analysis percentage analysis and chi square-test were used. The study revealed that salary, working condition, career growth, supervisor behavior and outstation influence the job quitting process. The study also defined the association between the reasons for leaving job such as salary, working condition, career growth supervisor behaviour & outstation and satisfaction, time spent in the organisation, training & development facility, frequency of changing job & encourage from immediate boss. This study establishes the importance of intentions of employees to quit job and provides further evidence in revealing the intentions to quit among the employees.

국내 패션기업 종사자들의 스포츠 활동참여에 따른 집단 간 직무만족, 조직몰입, 이직의도의 차이에 대한 연구 (Differences in Job satisfaction, Organizational Commitment, and Intent to Leave the Job among the Employee Groups of Korean Fashion Companies according to the Degree of Participation in Sports Activities)

  • 최소라;정성지;김나미;김태은;안시현;이민지;장미순
    • 한국의상디자인학회지
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    • 제18권1호
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    • pp.23-34
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    • 2016
  • The purpose of the study was to investigate differences in job satisfaction, organizational commitment, and intent to leave the job among the employee groups of korea fashion companies according to the degree of participation in sports activities. For the study, the questionnaire was developed by the authors and distributed to 350 employees of Korean fashion companies. A total of 300 questionnaires was collected and used for the final analysis. Data were analyzed by frequency analysis, reliability analysis, factor analysis, independent sample T-test, ANOVA and Tukey's test, using the SPSS 18.0 Package Program. The findings were as follows. The fashion industry professional group which had spent longer period and hours, and more days in sports activities tended to have higher job satisfaction and organizational commitment and lower intent to leave their job.

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다중흐름모형을 적용한 서울형 유급병가 정책 도입과정에 관한 연구 (A Study on the Policy Decision Making Process of Seoul-Type Paid Sick Leave: Applying Kingdon's Multiple Streams Model)

  • 정현우;박소현;손민성;정혜주
    • 보건행정학회지
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    • 제30권3호
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    • pp.286-300
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    • 2020
  • In 2019, the Seoul metropolitan government established its own 'Seoul-type paid sick leave project'. Although the central government had to introduce such a system, which is also called sickness benefits, it was not implemented. In order to understand the process by which the Seoul government has implemented such a policy, this study used Kingdon's multiple streams framework. As a result, in the problem stream, it was found that the economic burden of sickness has been considered only in terms of medical expenses in the past of Korea. Then Songpa's three women and Middle East respiratory syndrome incidents raised awareness of the necessity of the sickness benefit system in 2014 and 2015. In the political stream, several social affairs such as national health insurance huge surpluses and the 2017 presidential election opened policy window. At that time, Seoul Mayor actively promoted sickness benefits as a policy entrepreneur. In the policy stream, the sickness benefit system has gained new attention through political events. To summary, these three streams flowed separately and then they assembled around huge political affairs. As a result, it was confirmed that Kingdon's model is the most effective theory than any other models in analyzing the health care policy decision process in Korea.