• Title/Summary/Keyword: Control variable

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A STUDY ON THE RELATIONSHIP BETWEEN THE LEVEL OF CAREER AWARENESS AND SELF-ESTEEM OF CHILDREN IN ELEMENTARY SCHOOLS (초등학교 아동들의 진로인식 수준과 자아존중감과의 관계 연구)

  • Kim, Mi-Ran
    • 한국초등상담교육학회:학술대회논문집
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    • 2004.01a
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    • pp.205-222
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    • 2004
  • Fundamental direction of the seventh education curriculum aims to nurture active and creative Koreans for globalized and information-oriented society of 21 century, and emphasizes the importance of career education identifying its subsections that are practices of student-focused education of aptitude, ability and career. Hence, as a clear targeting of career objective from elementary school through relevant career education enables them to recognize appropriate career for themselves, the basis of self- actualization and social contribution must be settled. This paper seeks to identify the relationship between career awareness and self-esteem by examining and analysing differences of sex, region and level. This study selected 536 samples from 4th and 6th year elementary school students in C city and S town of Chungcheong province. Career awareness test and self-esteem test is used as a measurement, statistical process control (SPC) of career awareness and self-esteem (M, SD, r) is made for each variable, and the significance was tested. The result of this research can be summarized as follows: First, generally there is very significant regional differences of career awareness (F=16.817, p<.001), which contains that urban children has higher career awareness (M=120.22) than that of rural children (M=113.87). In subsections of career awareness, self-esteem of urban children is higher than that of rural children, and the attitude & for career and values of girls is higher than that of boys. In terms of the career planning, urban children and 6th year students are higher than rural children and 4th year students. Second, self-esteem generally has very significant regional difference (F=12.123, p<.01), which contains that the self-esteem of urban children (M=106.50) is higher than that of rural children (M=101.80). In comparison of different forms, a very significant difference is as much as p<.01 level (F=11.046), which contains 4th year students (M=105.63) have higher self-esteem than 6th year students (M=102.05). In subsections of self-esteem, gross self-esteem and social self-esteem of urban children are higher than rural children. In terms of family self-esteem, urban children and 4th year students have higher figure than rural children and 6th year students. In school self-esteem, 4th year students had higher level than the 6th. Third, the career awareness and self-esteem are generally related as r= .50, it was very significant at p<. 001 level. All subsections of career awareness had positive relationships except the school self-esteem. According to the result, rural children had relatively low career awareness and self-esteem. This is presumably due to relatively poor circumstances for rural children, comparing to that of urban children. Therefore rural elementary schools should try to let them have appropriate career awareness by associating with family, school and local society to expand the opportunity of experiences for the self perception of aptitude, nature and interest. In addition, we have to strive for the whole-minded education increasing the self-esteem of rural children and giving them positive thinking through career counselling, personal counselling and group counselling.

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Genes profile related to modulation of natural killer cell activity induced by electroacupuncture (전침이 자연살해세포 활성에 미치는 유전자 발현 profile에 대한 연구)

  • Choi, Gi-soon;No, Sam-woong;Oh, Sang-deog;Bae, Hyun-su;Ahn, Hyun-jong;Ha, Yoon-mun;Kim, Kwang-ho;Min, Byung-il
    • Journal of Acupuncture Research
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    • v.19 no.6
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    • pp.111-124
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    • 2002
  • A line of study reported that electroacupuncture(EA) modulate natural killer cell(NK Cell) activities. One report suggested that EA enhanced splenic interferon-gamma($IFN-{\gamma}$), interleukin-2(IL-2), and NK cell activity in Sprague-Dawley rats. Another study suggested that $IFN-{\gamma}$ mediates the up-regulation of NK cell activity, and endogenous ${\beta}$-endorphin secretion also play a role in the up-regulation of NK cell activity induced by EA stimulation. In order to better understand the molecular regulation underlying the activation of NK cell induced by EA, we have utilized cDNA microarray to elucidate how EA alters program of gene expression of spleen in rats. First, we divided three groups, group I was EA group treated with EA in restriction holder, group II was sham group with only holder stress, and last group III was control group with no treatment. We measured NK cell activity after EA stimulation three times for 2 days using $^{51}Cr$ release assay. Second, Biotin-labeled cDNA probes synthesized from EA group and sham group, were competitively hybridized to the microarray that contained variable genes. Such high-throughput screening has identified a number of EA-responsive gene candidates. Of these, we found that EA induced a subset of genes of genes that functionally could modulatory effects on NK cell activity. Genes(vascular cell adhesion molecule-1, protein-tyrosine kinase, CD94 mRNA) related to boost NK cell activity, were increased by EA And, genes(protein-tyrosine-phospatase mRNA, protein-tyrosine phosphatase(SHP-1) mRNA) related to inhibit NK cell activity, were decreased by EA. These EA-responsive genes may provide key insights from which to understand mechanisms of activation of NK cell induced by EA.

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Effects of Entrepreneurship, Information Technology Acceptance, and Media Utilization on Office Worker Commitment: with Moderating Effect of Learning Orientation (기업가정신, 정보기술 수용성, 미디어 활용역량이 직장인의 업무몰입에 미치는 영향: 학습지향성 조절 효과를 반영하여)

  • Lee, Sang Gil;Ha, Kyu Soo
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.12 no.3
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    • pp.37-51
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    • 2017
  • We investigated how entrepreneurship, information technology acceptance, and media utilization influence on office worker commitment and how effects are modulated by learning orientation. The purpose of this study is to identify variables that influence on office worker commitment. To do so, entrepreneurship, information technology acceptance, and media utilization that are the core competencies of individuals and organizations in the era of smart information are proposed as predictor variables, office worker commitment as a outcome variable and learning orientation as a modulator. For this study, a questionnaire survey was conducted on office workers, and finally 340 valid questionnaires are used for analysis. Hierarchical regression analysis is used with demographic characteristics as control variables and learning orientation as a modulating variables. A result showed that the higher need for achievement and proactiveness of entrepreneurship is, the higher job commitment is and that the perceived usefulness of information technology acceptance and communication utilization ability of media utilization competitiveness have a positive effect on job commitment. A research showed that learning orientation is modulating the relationship between entrepreneurship and job commitment, and between media utilization capability and job commitment, respectively. We concluded that we should actively seek synergies of learning orientation along with accumulation of online communication utilization capacity and perceived usefulness of information technology, and of proactiveness need for achievement and in entrepreneurship in order to improve the work committment in the smart information society where the digital environment is advanced.

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Robust Optimization of the Solenoid Assembly in Electromagnetic Limited Slip Differential by Considering the Uncertainties in Machining Variables (가공변수의 불확실성을 고려한 전자제어식 차동제한장치 솔레노이드 어셈블리의 강건 최적설계)

  • Oh, Sang-Kyun;Lee, Kwang-Ki;Suh, Chang-Hee;Jung, Yun-Chul;Kim, Young-Suk
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.35 no.10
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    • pp.1307-1313
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    • 2011
  • The mechanical limited slip differential (LSD) in vehicles is being replaced by the electromagnetic LSD because of its fast response and better active control characteristics. The coil housing made of STS 304 is one of the most important parts in the solenoid assembly of the electromagnetic LSD. High geometrical accuracy is a prerequisite for the manufacture of such coil housings, but precision machining is difficult because of the use of STS 304 thin plate and the variance in machining variables. The aim of this study is to optimize the mean and variance of the shape accuracy in the coil housing by finding a robust solution for the machining process conditions. The mean and standard deviation of the jaw contact pressure, cutting speed, and feed rate are considered to be the major parameters for minimizing the geometrical mean and variance. The response surface model based on the second-order Taylor series is combined together to minimize the mean and variance of the shape accuracy of the coil housing.

Effects of Self-efficacy on Job Embeddedness, Innovation Behaviors, and Organizational Citizenship Behavior - the Moderating Effect Worked Mainly in the Form- (자기효능감이 직무착근도, 혁신행동과 조직구성원 행동에 미치는 영향 -근무형태에 따른 조절효과 중심으로-)

  • Hong, Hyun-Kyong;Chung, Kyoo-Yup;Kim, Won-Hee
    • The Journal of the Korea Contents Association
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    • v.12 no.5
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    • pp.415-430
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    • 2012
  • Under fastly moving businese circumstance, it is very important to retain par excellence human resource and innovation. The purpose of this study is to find out casual relationship among self-efficacy, job embeddedness, innovative behavior, and organizational citizenship behavior, which is dependent variable. With the help of information technology. To verify hypotheses such statistical analyses as factor analysis, reliability test, and path analysis by AMOS 18.0. The population of this study is employees of super deluxe hotels in korea and they are divided into two categories such as front-of-the-house and back-of-the-house respectively with same numbers. In case of mutual relationship between self-efficacy and innovative behavior, self-control and task difficultness factors significantly influence innovative behavior in case of front-of-the house employees and vice-versa in those of back-of-the-house. In case of interactive relationship between self-efficacy and organizational citizenship behavior, slightly different results are revealed between front-and back-of-the-house employees, employees, i.e. all factors are significantly related in former but not in latter.

An Empirical Study on the Relationship between Performance and Behaviors of Participants in the Knowledge Sharing Virtual Community (지식공유 가상커뮤니티에서 사용자의 성과와 행동에 관한 실증연구)

  • Cho, Hurn-Jin;Jahng, Jung-Joo
    • Asia pacific journal of information systems
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    • v.19 no.1
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    • pp.63-82
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    • 2009
  • Virtual community is a social aggregation to attain some goals in an IT-supported virtual space (Lee et al., 2002). As lots of virtual communities generate robust and reliable outputs with low control and low incentive, previous researchers was interested in the questions, "why do they participate?" or "how are they controlled?". But. as Katz (1964) said, the most important part of the high-performing organization is the behaviors of members in the organization. Therefore, this research is to examine the relationship between the performance and the behaviors of participants in the virtual community. First, we propose 6 types of behaviors related to high performance in the virtual community: 'Continuous Attendance', 'Complying with the organizational value, policies, and regulations', 'Protection', 'Suggestion for the improving', 'Self-training', and 'Favorable behavior'. The six types of behaviors are extracted from the framework of Katz (1964) and Brief and Motowidlo (1986). The reason why each behavior is positively related with high-performance is that those who continuously attend have more responsibility than temporary participants do; complying with the rules of a virtual community means that they may make more reliable outcome; 'Protection' is one of the prosocial-behaviors and those who protect the community may concern the benefit of the virtual community when they participate: those who suggest some ideas for improvement may contribute to the virtual community; 'Self-training' behavior means that participants really want to have high quality in their contribution: those who have 'Favorable attitude' consider other members in the virtual community when they participate. Then, we perform an empirical analysis with the survey from participants in the Knowledge service of Naver.com, to show those behaviors are associated with the high-performance. To make the measurement for the six behaviors, we use CVR (content validity ratio) method (Lawshe, 1975), interviewing 12 experts. The dependent variable, performance of participation, is measured by 'ratio of selected answer' given by the Naver.com. We use email survey. We sent 1200 emails to randomly selected participants in the knowledge service and received 282 responses. The results of our empirical analysis show that 4('Continuous Attendance', 'Suggestion for the improving', 'Self-training', 'Favorable attitude') are positively related to the performance, but 2('Complying with the organizational value, policies, and regulations' and 'Protection') are not significant. In line with Fitzgerald (2006), we expect that participants in the virtual community may behave similarly to employees in the off-line firms for the high performance. But 2 behaviors have different results. The reason that the 'Complying with the organizational value' behavior is not sufficiently related to performance is that the motivation of participants is more related to intrinsic pleasure or altruism than external reward. Also, the 'Protection' behavior has no significant relationship with performance, which means that the high-performing participants have little concern about the problems in the community.

The Relationship between the Task Characteristics and the Success Factors of End-User Computing (현업부서의 과업특성과 현업사용자주도 전산의 성공요인과의 관계)

  • 김상훈
    • Journal of Korea Society of Industrial Information Systems
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    • v.5 no.1
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    • pp.87-101
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    • 2000
  • End-User Computing(EUC) is a rapidly growing phenomenon in organizations As EUC gets to be a major segment of information systems, it becomes more important to manage EUC effectively. This paper focuses on developing an integrative framework of EUC management in the contingent perspective. The characterstic of task for which EUC is implemented was considered as a contingent variable. Based on systematic review of previous research on success factors of EUC implementation, three generic variables for EUC management were identified theoretically, which were support, promotion and control. The contingent relationships between these three EUC management variables and EUC performance were reasoned and four hypotheses concerning these relationships were derived. A field study was undertaken to test the hypotheses. Data were collected from 83 End-Users belonging to Korean business organizations. Correlation analyses and Fisher's Z tests were employed to test the hypotheses. The results supported the hypotheses for the most part and gave implications and future research directions for the management for EUC.

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A Study on the Effects of Dissatisfaction of the Users of Internet Shopping Malls on Shopping Attitude And Shopping Propensity in China - Focused on the Moderating Effect of Economy Benefit - (중국인터넷쇼핑몰 이용자불만이 쇼핑태도와 쇼핑성향에 미치는 영향에 관한 연구 - 경제적 효익 조절효과 중심으로-)

  • Jeun, Sang-Taek;Park, Byung-Ki
    • Management & Information Systems Review
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    • v.37 no.2
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    • pp.23-42
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    • 2018
  • As the development of the Internet in China has led to the active shopping of the internet, the number of Chinese internet users and online shopping malls is increasing rapidly. Chinese internet shopping malls are experiencing satisfaction and discontent with their websites. Research has focused on the satisfaction of customers using internet shopping malls and internet shopping malls reported complaints to users as complaints about products and websites. The study looked at seven area Chinese internet users (Beijing, Harbin, Shenyang, Ganssu, Xian, Shanghai and Henan). The effect of product complaints and site complaints on shopping attitudes and behaviors of internet shopping users was studied, and economic benefits were studied as a control variable. As a result, There was no effect on controlling the economic benefits of the complaint against the product, but the controlling the economic benefits of the complaint on the site was effect. About 83 percent of those surveyed were in their 20s and 30s who had experience shopping online and in internet. And It is intended to present theoretical reviews and guidelines for Korean internet shopping malls operating here, as they plan to expand to China by analyzing their internet shopping mall users.

A Study on Visual Comfort for Light Control Method of Applied Daylighting (자연채광방식의 응용에 따른 시각적 쾌적성에 관한 연구)

  • Han, Sang-Pil;Han, Sang-Cheol
    • 한국태양에너지학회:학술대회논문집
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    • 2012.03a
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    • pp.140-145
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    • 2012
  • The purpose of this study is to understand the change of impression by comparing the uniformity lighting with the compound lighting. In previous study, we proposed a light controlling method to harmonize daylight from a window and artificial lights from a ceiling and obtained the results to support our method. We referred this method as the Adjusted Compound-Lighting Model (AC Model). The model claims that lighting in a room with a side-window are perceived as harmonious when the overall light distribution in the room is well approximated by a compound of lights from the window and the entire ceiling. The experiment is carried out with the scaled-models and mock-up spaces that were supposed to be an office space. One is lit by the uniform lighting and the other by the compound lighting in each experimental space. In order to present varying illuminance distributions, thetwo variables were used in this study. One was the ratio of thelight from the window and ceiling in the standard and evaluation box. The standard box was provided by the ratio of 20% to 40% from the window and 80% to 60% from the ceiling as two lighting ratio patterns [Wu20(=Cu80) and Wu40(=Cu60)]. And the evaluation box was provided by the light ratio of 0% to 40 from the window and 100% to 60% from the ceiling [Wcp0(=Ccp100), Wcp20(=Ccp80) and Wcp40(=Ccp60)]. The other variable was themean illuminance level in both boxes. Two level of mean illuminance (700lx and 300lx) were used in this experiment. Each lighting condition was established at equal horizontal mean illuminance level, held constant near 700lx or 300lx in both boxes. Both of them were similar in the shape of distribution when there were same ratios of lights from the window and the ceiling. Subjects were asked to evaluate the point of difference by semantic differential rating on their overall impression after comparing with two rooms. The results showed that the impressions of compound lighting were more positive score than that of uniformity lighting on the items of 'dim-bright', 'dislike-like', 'artificial-natural' and 'closed-open', and that there was no significant difference in impressions between two spaces on other items.

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Design and Implementation of Data Distribution Management Module for IEEE 1516 HLA/RTI (IEEE 1516 HLA/RTI 표준을 만족하는 데이터 분산 관리 모듈의 설계 및 구현)

  • Ahn, Jung-Hyun;Hong, Jeong-Hee;Kim, Tag-Gon
    • Journal of the Korea Society for Simulation
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    • v.17 no.2
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    • pp.21-29
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    • 2008
  • The High Level Architecture(HLA) specifies a framework for interoperation between heterogeneous simulators, and Run-Time Infrastructure(RTI) is a implementation of the HLA Interface Specification. The Data Distribution Management(DDM) services, one category of IEEE 1516 HLA/RTI management services, control filters for data transmission and reception of data volume among simulators. In this paper, we propose design concept of DDM and show its implementation for light-weighted RTI. The design concept of DDM is to minimize total amount of message that each federate and a federation process generate using the rate of RTI service execution. The design of our proposed DDM follows that a data transfer mechanism is differently applied as the rate of RTI service execution. A federate usually publishes or subscribes data when it starts. The federate constantly updates the data and modifies associated regions while it continues to advance its simulation time. Therefore, the proposed DDM design provides fast update or region modification in exchange of complex publish and subscribe services. We describe how to process the proposed DDM in IEEE 1516 HLA/RTI and experiment variable scenarios while modifying region, changing overlap ratio, and increasing data volume.

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