• 대한가정학회지
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• 제43권9호
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• pp.109-127
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• 2005

The present study examined the relationships among maternal attachment, self-concept, peer relationship, and school adjustment. The subjects were 293 Korean-Chinese elementary school students living in Yanji and Shenyang, China. The Inventory of Parent and Peer Attachment (Armsden & Greenberg, 1987), Social Competence Inventory(Doh & Falbo, 1999), and Self-Perception Profile for Adolesents(Harter, 1988) were used to measure the subjects' maternal attachment, and peer relationship, school adjustment, and self-concept, respectively. When structural equation modeling was applied, the results supported not only the model that maternal attachment and self-concept exert an influence on peer relationship, but also the model that they exert an influence on school adjustment. The results of this study suggest that the secure maternal attachment of Korean-Chinese works as an important mechanism that explains their peer relationship and adjustment at elementary school.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2012년도 제44회 KOSCO SYMPOSIUM 초록집
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• pp.247-248
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• 2012

Unidentified self-ignitions were reported when the high-pressure hydrogen gas suddenly leaked out. This paper presents a flow visualization study to investigate the self-ignition mechanism in a test tube how the ignition process is initiated and the flame propagates with measurement of a number of pressure and light sensors installed in the tube supported the analysis of the self-ignition. The test result showed the location of the self-ignition taken place and critical static pressure at the boundary layer for self-ignition.

• 대한가정학회지
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• 제29권4호
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• pp.99-114
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• 1991

This study was designed to determine the relative importance of specific family environmental variables and positive self-concept of psychological variables in explaining family life satisfaction. Data were collected from 423 housewives in Daegu City. Multivariate regression and factor analysis and path analysis were used to analyze the data. The results of this study partially supported the hypothesis that positive self-concept of psychological factors would be more closely associated with family life satisfaction than would family environmental factors. The findings were as follows: 1. Urban housewives' positive self-concept and family life satisfaction were relatively high. 2. Among family environment variables, health, wives' education level, husband's satisfaction with job significantly influence on positive self-concept. 3. The variables which significantly affect family life satisfaction are husband's satisfaction with job, monthly family income, health. 4. From the path analysis, it found that positive self-concept has the most great influence on family life satisfation.

• 한국지반신소재학회논문집
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• 제22권3호
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• pp.11-25
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• 2023

본 연구에서는 시멘트혼합처리토를 활용한 경사 자립식 흙막이공법에 대한 설계법과 해석법에 대하여 연구하였다. 경사 자립식 흙막이 벽체의 경우 경사에 따른 주동토압계수의 감소와 자중효과로 주동측압이 감소하고 수동토압계수의 증가와 자중모멘트의 증가로 인해 전체적인 안정성이 증가하였다. 흙막이 벽체는 경사에 따라 굴착측으로의 전도파괴에서 활동파괴로의 형태 변화가 발생되었고, 최적의 경사는 10°인 것으로 평가되었다. 수치해석에서의 전체 안정성은 강도감소법과 비교하여 한계평형해석이 보수적인 결과를 도출하므로 설계 시 본 방법으로 검토해야 하는 것으로 나타났다. 매개변수 연구 결과, 지지력파괴와 압축파괴에 대한 안정성은 상재하중이 작은 경우(약 20kPa 이하) 경사 10°이상에서는 크게 증가하지 않았다. 배면 지반의 점착력이 있는 경우 수치해석과 유사한 결과는 점착력을 고려한 경우로 나타났다. 활동, 전도, 전단, 인장에 대한 안정성은 벽체의 두께에 비례하여 증가하지만, 일정 경사각(약 10°) 이상에서는 벽체의 두께와 상관없이 지지력과 압축응력의 안정성에 큰 변화가 없는 것으로 평가되었다.

• Structural Engineering and Mechanics
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• 제43권5호
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• pp.583-605
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• 2012

This paper presents a spatial catenary cable element for the nonlinear analysis of cable-supported structures. An incremental-iterative solution based on the Newton-Raphson method is adopted for solving the equilibrium equation. As a result, the element stiffness matrix and nodal forces are determined, wherein the effect of self-weight and pretension are taken into account. In the case of the initial cable tension is given, an algorithm for form-finding of cable-supported structures is proposed to determine precisely the unstressed length of the cables. Several classical numerical examples are solved and compared with the other available numerical methods or experiment tests showing the accuracy and efficiency of the present elements.

• Structural Engineering and Mechanics
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• 제17권6호
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• pp.879-898
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• 2004

A method of making simply supported girders continuous is described for bridges with spans of 30-45 m. The splicing method takes advantage of an induced secondary moment to transform the self-weight stresses in the precast simply supported girders into values representative of a continuous girder. The secondary moment results from prestressing of continuity tendons and detensioning of temporary tendons in the girders. Preliminary sections are selected for spliced U-girder bridges with a range of span lengths. Use of the proposed technique results in girder depth reductions of 500-800 mm when compared to standard simply supported I-girder bridges. The flexural behavior of an example bridge with 40-m spans is examined to illustrate the necessary considerations for determining the optimum sequence of splicing operations.

• 간호행정학회지
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• 제7권1호
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• pp.165-172
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• 2001

The purpose of this study was to determine the relationship between self-efficacy and adherence of exercise in patients with ankylosing spondylitis. The subjects for this study were the 50 patients with ankylosing spondylitis who had been diagnosed as out patients in the Rheumatism Center of one university hospital in Seoul and participated in the 8 weeks exercise program. The data were collected by a questionnaire the period from April 1 to May 2, 2000. Data were analyzed by t-test, ANOVA, Pearson's correlation coefficient, Frequencies, using the SAS program. The results were as follows: The mean duration for exercise adherence of ankylosing spondylitis was 12.2 months. The mean self-efficacy score was 74.3 in a possible range of 10 to 100. A significant difference of self-efficacy was found between adherers and non-adherers and self-efficacy of adherer was higher than that of non-adheres(t=4.25, p=.001). Self-efficacy was significantly associated with the total duration of an exercise adherence(r=.42, p=.001). These findings may indicate that the relationship between self-efficacy and exercise adherence in patients with ankylosing spondylitis was supported. From these results, it can be suggested that the relationship between self-efficacy and exercise adherence in patients with ankylosing spondylitis. Therefore, intervention is needed to promote self-efficacy of ankylosing spondylitis and futher studies should develop self-efficacy promoting programs for patients with ankylosing spondylitis.

• 디지털산업정보학회논문지
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• 제11권2호
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• pp.167-179
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• 2015

Recently the small and medium sized companies are more difficult to find people than large companies. So it is natural that having a great interest in leadership and its effects in organizations. This study examines how transformational leaders influence on empowerment, self-efficacy and job satisfaction in IT company. Investigating the effect between transformational leadership and job satisfaction in IT company may also be a tip of an understanding of how to manage employee turnover. Samples of 387 employees in IT companies were analyzed by structural equation modeling using Lisrel 8.7 and it showed acceptable data-fit of proposed model and supported all of research hypotheses. The empirical results indicated that transformational leadership significantly influences empowerment, self-efficacy and job satisfaction and also it confirmed that empowerment and self-efficacy are effective mediators linking job satisfaction. That is the findings reveal that transformational leaders boost employee's job satisfaction indirectly.

• 지식경영연구
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• 제21권1호
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• pp.151-173
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• 2020

The purpose of this study is to identify the antecedents that impact on the individual knowledge sharing based on motivational perspectives. Specifically, the authors investigate the roles of general self-efficacy and popularity on knowledge sharing drawn on costly signaling theory and trait activation theory. Data from 227 pairs of employees and coworkers working in companies located in South Korea supported the model. General self-efficacy was positively related to knowledge sharing and popularity was positively associated to knowledge sharing. Also, by taking an interactional approach, our study demonstrated the moderating effect of popularity on the relationship between general self-efficacy and knowledge sharing. The positive relationship between general self-efficacy and knowledge sharing is significant when popularity is low, but not significant when popularity is high. Our findings suggest that the various motivation types including intrinsic and extrinsic motivations for knowledge sharing of individuals exist simultaneously and these motivations have an interactive effect on knowledge sharing.

• 디지털융복합연구
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• 제19권4호
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• pp.193-204
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• 2021

본 연구는 취약계층 아동·청소년이 이용하는 지역아동센터 문화프로그램 몰입이 진로인식과 진로발달에 주는 영향을 사회적 지지에 의해 조절된 자기효능감의 매개효과를 검증하고자 하였다. N시 지역아동센터 22개소에 다니는 190명의 아동청소년을 대상으로 문화프로그램 몰입, 진로인식, 진로발달, 사회적 지지와 자기효능감에 관한 설문조사를 실시하였다. 본 연구의 통계처리를 위해 SPSS PC+ 25.0의 SPSS MACRO가 사용되었다. 본 연구결과 첫째, 문화프로그램 몰입은 자기효능감, 사회적지지, 진로인식, 진로발달과 정적 상관관계가 있었다. 둘째, 문화프로그램 몰입이 자기효능감을 매개로 진로인식과 진로발달에 영향을 주며, 문화프로그램 몰입이 진로인식과 진로발달에 주는 영향을 매개하는 자기효능감을 사회적지지가 조절하는 것이 검증되었다. 지역아동센터에 다니는 아동·청소년이 지각하는 사회적 지지가 높을수록 자기효능감의 매개효과가 커지고, 문화프로그램몰입이 진로인식과 진로발달에 주는 긍정적 영향이 촉진된다고 할 수 있다. 본 연구의 한계점과 향후 연구과제가 논의되었다.