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펄트루젼 구조용 휨부재의 국부좌굴 거동 (Local Buckling Behavior of Pultruded Structural Flexural Members)

  • 정재호;윤순종
    • 한국복합재료학회:학술대회논문집
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    • 한국복합재료학회 2003년도 춘계학술발표대회 논문집
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    • pp.147-151
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    • 2003
  • In this study, we discussed the local buckling behavior of pultruded structural flexural members. Previous works were briefly reviewed and the local buckling behavior of orthotropic box-shape flexural members was discussed. The simplified form of equation for finding the width ratio of plate element of box-shape flexural members in which all plate components buckle simultaneously was proposed and the macro flow-chart for finding local buckling strength of pultruded flexural members was also suggested. To establish the design guide line for the local buckling of pultruded flexural members, further studies need to be performed as follows; the simplified form of solutions for finding the minimum buckling coefficient of orthotropic plate with various loading and boundary conditions including rotationally restrained boundary conditions, the simplified form of equation for calculating the coefficient of restraint provided by the adjacent plate elements.

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LSM을 사용한 합성 PC 부재의 현장생산 공기 산정 기초연구 (Basic study for time analysis of insitu production of composite precast concrete members using linear scheduling method)

  • 임채연;김선국
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2014년도 추계 학술논문 발표대회
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    • pp.92-93
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    • 2014
  • Green Frame is a method for Rahmen structure construction composed of composite PC members. The composite PC members of Green Frame which are based on in-situ production can reduce the construction cost and are more likely to secure quality when compared to production in factories. Previous studies developed forms for in-situ production of Green Frame composite PC members and proposed algorithms to arrange them on site. However, it requires not only their arrangement, but also calculation of an accurate production period to produce the required PC members in a limited space and supply them in a timely manner. In particular, it is necessary to clearly define the properties of detailed processes for in-situ production of PC members and to calculate the time required for respective process. To do so, this study is a basic research on calculating the time for in-situ production using a linear scheduling method.

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Minimum shear reinforcement ratio of prestressed concrete members for safe design

  • Park, Min-Kook;Lee, Deuck Hang;Ju, Hyunjin;Hwang, Jin-Ha;Choi, Seung-Ho;Kim, Kang Su
    • Structural Engineering and Mechanics
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    • 제56권2호
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    • pp.317-340
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    • 2015
  • Design codes have specified the minimum shear reinforcement requirement for reinforced concrete (RC) and prestressed concrete (PSC) members to prevent brittle and premature shear failure. They are, however, very different from one another, and particularly, ACI318 code allows the required minimum shear reinforcement to be reduced in PSC members, compared to that in RC members, by specifying the additional equation for PSC members whose basis is not clear. In this paper, the minimum shear reinforcement ratio for PSC members was proposed, which can provide a sufficient reserved shear strength and deformation capacity. The proposed equation was also verified by the test results of PSC specimens lightly reinforced in shear, comparing to design codes and other proposed equations from previous studies.

Experimental evaluation on the seismic performance of high strength thin-walled composite members accounting for sectional aspect ratio effect

  • Hsu, H.L.;Juang, J.L.;Luo, K.T.
    • Steel and Composite Structures
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    • 제9권4호
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    • pp.367-380
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    • 2009
  • This study focuses on the experimental evaluation of the flexural-torsional performance of high strength thin-walled composite members. A series of tests on composite members with various sectional aspect ratios subjected to eccentric cyclic loads were conducted. Test results show that the composite member's torsional strength could be approximated using a series of linear segments and evaluated using the superposition of the component steel and reinforced concrete responses. It is also validated from the tests that the strength deterioration of members subjected to combined loads is closely related to the aspect ratios of the sections. An interaction expression between the bending and torsion for high strength thin-walled composite members is proposed for engineering practice references.

Foreign-Born Public Relations Faculty Members' Relationship with their Universities as a Soft Power Resource in U.S. Public Diplomacy

  • Ertem-Eray, Tugce;Ki, Eyun-Jung
    • Journal of Public Diplomacy
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    • 제2권1호
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    • pp.6-27
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    • 2022
  • With globalization and new communication technologies, governments aim to cultivate relationships with their foreign publics. This goal represents the convergence of the public relations and public diplomacy domains. In this regard, this study aims to explore how foreign-born faculty members' attitudes and behaviors toward the U.S. are shaped by their relationships with their universities. Findings confirm a significant link between foreign-born faculty members' perceived relationships with their universities and their attitudes and behavioral intentions toward the U.S. The authors conclude that a positive relationship between universities and foreign faculty members can serve as a soft power resource in U.S. public diplomacy. This study contributes to governments' public diplomacy efforts by analyzing the roles of the foreign-born faculty members as strategic communication channels in cultivating relationships between a host country and their homelands.

The Effect of manager's Communication Type on Organizational Culture and Innovative Behavior

  • Kang Woon Jo;Moon Jun Kim;Hwan Cheol, Hwang
    • International journal of advanced smart convergence
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    • 제12권2호
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    • pp.143-152
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    • 2023
  • This study confirmed the effect of manager's communication type perceived by organizational members on innovative behavior and the mediating effect of organizational culture. In other words, the manager's communication type was statistically positive for organizational members' innovation behavior (Hypothesis 1) and organizational culture (Hypothesis 2). Organizational culture improved innovative behavior of organizational members (Hypothesis 3). In addition, organizational culture played a mediating role between the manager's communication type and organizational members' innovative behavior (Hypothesis 4). In other words, the importance of improving the innovative behavior of organizational members, which is a key factor for advancing organizational sustainability management, was confirmed. It was confirmed that the manager's communication type and organizational culture act as a key factor for the advancement of innovative behavior. Therefore, executives and managers confirmed the importance of systematic managers' communication-type competency development and organizational culture revitalization plans and the necessity of implementing them in order to improve innovative behavior.

A Study on the Effect of ICT Enterprise Executives Affect Organizational Performance and the Consistency of the Values of Members

  • Kim, Moon Jun
    • International journal of advanced smart convergence
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    • 제8권4호
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    • pp.93-103
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    • 2019
  • We examined the mediating effect of the consistency of the values of organizational members on the relationship between the values of IT enterprise executives and organizational performance. Hypotheses 1, 2, and 3, which were set up to achieve the purpose of this study, were verified as follows. First, Hypothesis 1 proposed that the values of management will have a positive effect on organizational performance. Second, Hypothesis 2 proposed that the values of management are likely to have a positive effect on the consistency of the values of organizational members. Third, Hypothesis 3 proposed that the consistency of the values of organizational members will have a positive (+) influence on organizational performance. We found that the consistency of the values of organizational members has a positive (+) influence on organizational performance. Hypothesis 3 was adopted. Fourth, the consistency of the values of the organizational members proved that the organizations with high consistency of values performed well by mediating the values and organizational performance of management. In other words, according to the values of the management, we can improve an organization's sustainability management system by increasing the value of organizational performance and the values of organizational members. Therefore, we must establish plans that can be shared systematically and strategically about the values of management. In addition, the consistency of the values of organizational members has a direct or indirect influence on improving organizational performance. Therefore, we need to systematically derive and improve various factors that can increase the consistency of the values of organizational members in terms of strategic human resource management, such as organizational vision, core values, talent awards, selection process, and motivation. Therefore, the greatest significance of this study is in its theoretical and practical implications for increasing the sustainability management system by using the influence of the executives' can do to further improve the organizational performance.

가상커뮤니티에서의 구성원 소속감에 영향을 미치는 요인 (Factors Affecting Members' Sense of Belonging in Virtual Community)

  • 이국용
    • 한국경영과학회지
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    • 제35권1호
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    • pp.19-45
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    • 2010
  • Virtual Communities, which are formed on the Internet, are expected to serve the needs of members for e-collaboration, e-communication, information and knowledge sharing. The executives of organizations should consider virtual community as a new innovation or knowledge pool since members share knowledge. However, many virtual community have failed due to members' low willingness to engage and furthermore to share knowledge with other members. Thus, there is a need to understand and foster the determinants of members' sense of belonging behavior in virtual community. This study develops an integrated model designed to investigate and explain the relationships between contextual factors, personal perceptions of virtual community, usability, trust and sense of belonging in using a certain virtual community. Empirical data was collected from 201 and tested using structural equation modeling (SEM) to verify the fit of the hypothetical model. The results show that the perceived usability and community trust of members significantly influences sense of belonging in using the virtual community, and information quality, system quality, familiarity on the virtual community are significantly influence the usability but not reputation. And I confirmed that perceived shared vision and responsiveness play the role of determinants in making the member's trust, perceived risk influence the making community trust in directly. The results of the study can be used to identify the motivation underlying members' sense of belonging in a certain virtual community by investigating the impacts of contextual factors and personal perceptions on virtual community, the integrated model better explains behavior than other proposed models. This study might help executives of virtual communities and organizations to manage and promote these determinants of sense of belonging to stimulate members' willingness to engage the community and futhermore enhance their virtual community loyalty.

노인간호학 교과과정에 대한 조사연구 (A Study of Gerontological Nursing Curriculum)

  • 전시자;공은숙;김귀분;김남초;김주희;김춘길;김희경;노유자;송미순
    • 대한간호학회지
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    • 제31권5호
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    • pp.808-817
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    • 2001
  • To survey the present status of the gerontological nursing course at three year diploma programs, baccalaureate degree programs(BSN), and graduate programs in Korea, and to analyze the contents of the syllabus and gerontological nursing textbooks to provide the basic data in developing a standard model for gerontological nursing curriculum. Method: Data was collected from all the nursing programs in Korea from Nov. 2000 to Feb. 2001 by mail and fax. Result: The gerontological nursing courses has been offered 36 diploma program, 40 BSN, and 17 graduate programs. And the credits of the gerontological nursing course offered by the program were as follows : one credit (10 diploma and 8 BSN), two credits (22 diploma and 29 BSN), and three credits (1 BSN). The contents of curri- culum were analyzed by comparing the core curriculum of NGNA. The majority of the schools included Gerontological Nursing in General, Theory of Aging, Aging Processes, Care Plan Options, and Common Health Problems. The subjects which very few school cover are Legal/ Ethical Issues, Evaluation, Regulatory & Reimbursement Issues, Education Issues, Nursing Research in Gerontology, and Environmental Issues of Older Adults. There were some differences in these results among diploma courses, BSNs, and graduate schools. The gerontological nursing textbooks contained similar contents to those of the diploma and the baccalaureate programs.

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스쿼트 운동 시 발의 압력에 미치는 영향 (A Study on Impact of Squat Exercise on Foot Pressure with different loads)

  • 원효헌;김민욱;배영훈;김용재
    • 수산해양교육연구
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    • 제25권4호
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    • pp.891-897
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    • 2013
  • This study is purposed to propose indices in order to achieve goals such as preventing one-sided movement of balance, preventing injuries to joints of legs, improving muscular strength of legs, and maximizing sporting achievement. In terms of methodology, this study has compared foot pressure distribution during squat exercise. This study targets 10 male students in their 20s of Department of Physical Education and 10 male students in their 20s of other departments of P University located in B City. Skilled members have been selected out of those who have had regular weight training experiences for last 3 years. As a result of analysis on impact of squat exercise on foot pressure, conclusions have been obtained as shown below. As a result of analysis on foot pressure distribution of back feet of skilled members and unskilled members during squat exercise, it was found out that foot pressure of left foot of skilled members was 0.13kgf/s, and that of unskilled members was 0.28kgf/s, showing significant difference (p<.01). As a result of analysis on foot pressure ratio of back feet of skilled members and unskilled members during squat exercise, it was found out that foot pressure ratio of left foot of skilled members was 50.03%, and that of unskilled members was 67.18%, showing significant difference(p<.01).