• Title/Summary/Keyword: member

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The Development of 42' 2D/3D Switchable Display

  • Kang, Hoon;Jang, Mi-Kyoung;Kim, Kyeong-Jin;Ahn, Byung-Chul;Chung, In-Jae;Park, Tae-Soo;Chang, Jin-Wook;Lee, Kyoung-Il;Kim, Sung-Tae
    • Journal of Information Display
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    • v.8 no.1
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    • pp.22-25
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    • 2007
  • Stereoscopic/autostereoscopic systems have been developed to express 3D images, but have not been successfully use in practise. In order to apply 3D display to promising applications such as advertisements and games, we developed a 42" 2D/3D switchable display. It has characteristics that do not require special glasses for 3D images, uses multi-view technology for improving 3D viewing characteristics, and has a 2D/3D switching function to express dynamic 3D contents as well as conventional 2D contents.

System and member reliability of steel frames

  • Zhou, W.;Hong, H.P.
    • Steel and Composite Structures
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    • v.4 no.6
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    • pp.419-435
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    • 2004
  • The safety level of a structural system designed per code specifications can not be inferred directly from the reliability of members due to the load redistribution and nonlinear inelastic structural behavior. Comparison of the system and member reliability, which is scarce in the literature, is likely to indicate any possible inconsistency of design codes in providing safe and economical designs. Such a comparative study is presented in this study for moment resisting two-dimensional steel frames designed per AISC LRFD Specifications. The member reliability is evaluated using the resistance of the beam-column element and the elastic load effects that indirectly accounts for the second-order effects. The system reliability analysis is evaluated based on the collapse load factor obtained from a second-order inelastic analysis. Comparison of the system and member reliability is presented for several steel frames. Results suggest that the failure probability of the system is about one order of magnitude lower than that of the most critically loaded structural member, and that the difference between the system and member reliability depends on the structural configuration, degree of redundancy, and dead to live load ratio. Results also suggest that the system reliability is less sensitive to initial imperfections of the structure than the member reliability. Therefore, the system aspect should be incorporated in future design codes in order to achieve more reliability consistent designs.

A Case Study on Earthquake Resistant Reinforcement Method for the Corner of Existing Underground R.C Box Structures using Pre-flexed Member System (프리플렉스 부재를 이용한 기존 철근콘크리트 지중박스구조물 우각부에 대한 내진보강공법 사례연구)

  • Chung, Jee-Seung;Kim, Jin-Gu;Lee, Jin-Hyuk
    • Journal of the Korean Society of Safety
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    • v.31 no.3
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    • pp.68-74
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    • 2016
  • This paper presents a new strengthening method of underground box structures against seismic loads for anti-seismic capacity improvement. A threaded steel member with pressure devices(so called 'Pre-flexed member system') is used to improve seismic capacity of the RC box structure. The pre-flexed member system is fixed the corner of opening after chemical anchor was installed by drilling hole on the box structure. The structural performance was evaluated analytically. Two bracing types of strengthening methods were used; conventional bracing method and I-bracing pressure system. For the performance evaluation, seismic analyses were performed on moment and shear resisting structures with and without strength member system. Numerical results confirmed that the proposed pre-flexed member system can enhance the seismic capacity of the underground RC box structures.

The Effect of Team Member Characteristics and Team Process on Team Effectiveness (팀구성원 특성과 팀과정이 팀효과성에 미치는 영향에 관한 연구)

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    • Journal of the Korea Safety Management & Science
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    • v.6 no.1
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    • pp.269-281
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    • 2004
  • This study aims to examine the effects of team member characteristics(change reception, work understand) and team process(potency, social support, workload sharing, communication and cooperation within the team) to team effectiveness(job commitment, job satisfaction and productivity), As the result, both team member characteristics and team process have positive relations with team effectiveness.

Structural Characteristics of Concrete Filled Glass Fiber Reinforced Composite Tube (콘크리트 충진 유리섬유 복합소재 튜브 합성압축부재의 구조적 특성분석)

  • 이성우;박신전;최석환
    • Proceedings of the Korea Concrete Institute Conference
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    • 1999.10a
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    • pp.571-574
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    • 1999
  • Due to many advantages of advanced composite material, research on the composite compression member is initiated. In this paper structural characteristics of concrete filled glass fiber reinforced composite tubular member si studied. Experimental results shows that strength and ductility of composite compression member is considerably increased due to concrete confinement action of composite surface. Thus it can be anticipated that increased strength of concrete will be incorporated in the design of composite compression member.

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Shape Optimization for Reinforced Concrete Culvert (철근콘크리트 암거의 형상 최적화)

  • Kim, Kee-Dae
    • Journal of the Korean Society of Industry Convergence
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    • v.5 no.3
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    • pp.261-268
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    • 2002
  • In this paper, the shape optimization is considered over the upper slab of reinforced concrete culvert. The sequential linear programming method (SLP) is used as a rational approach to this shape optimization. To make a comparison between the arch shaped member and the straight member for the upper slab, the culverts with 5~20m earth height were adopted. It is shown that the optimum rise/span is about 7%-13%, and the arch shaped member is more cheap (over 10%) than the straight member for the construction cost.

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A New Electrode Structure for Color-shift Reduction in PVA LCD

  • Kwon, Yong-Hoan;Baek, Jong-In;Kim, Jae-Chang;Yoon, Tae-Hoon
    • Journal of Information Display
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    • v.8 no.3
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    • pp.17-21
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    • 2007
  • We introduce a new electrode structure for the patterned vertical alignment (PVA) mode, which has a lower color-shift at large viewing angle than the one-domain VA mode. By manipulating the period of electrode structure, we can make more multi-domains and use the existing fabrication processes without having to use additional materials.

An Analysis of the Verbal Interaction Patterns of Science-Gifted Students in Science Inquiry Activity (과학 탐구 활동에서 나타나는 과학영재들의 언어적 상호작용 유형 분석)

  • Kim, MyungHee;Kim, Youngshin
    • Journal of The Korean Association For Science Education
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    • v.35 no.2
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    • pp.333-342
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    • 2015
  • This study analyzes the verbal interaction patterns used in a social network activity analysis that appeared in a science inquiry activity of 31 small groups of science-gifted students consisting of 5 members each. The results of this study are as follows: The interaction patterns showed eight types. The most prevalent interaction pattern, type 1, is triangle-shaped, interacting with 3 members out of 5 without a central member. Type 2 is wye form, interacting with 4 members and with one alienated member. Type 3 is diamond-shaped, interacting with 4 members. Type 4 is ray form, interacting with 5 around a central member. Type 5 has an alienated member and interacts with 4 members around the central member. Type 6 is triangle-branched, 4 members linked to the central member. Type 7 is wye form linked all around the central member. Type 8 is wye form with a more complex link than type 7. These can be classified in two. One is the participation-type where the rest of the 4 members are linked to the central member. The other is the alienation-type where a member/members is/are alienated without a central member. The participation-type appeared in 9 groups (29%), type 4, type 6, type 7, and type 8. The alienation-type showed in 22 groups (71%), type 1, type 2, type 3, and type 5. On the basis of this study, we propose that the best number of members in a group is three. It helps prevent a free-riding effect or isolation of members. Also, we deem it more fruitful if there is a member playing a central role in a group.

Introduction of Whidam's Su-Gi therapy - Focused on Cervical spine (휘담식 수기요법의 소개 - 경추부를 중심으로)

  • Beag, Ji You;Cho, Min Gun;Bae, Jae Ryong;Kang, Han Joo;Kim, Jun Chul;Lee, Jae Heung;Jang, Sang Chul;Ahn, Hun Mo
    • Journal of Korean Medical Ki-Gong Academy
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    • v.17 no.1
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    • pp.24-51
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    • 2017
  • Objective : The purpose of this study is to introduce Whidam's Su-Gi therapy(WST.) as a remarkable traditional manual therapy. Main subject : WST. is a traditional manual therapy from Do-In(導引) An-Kyo(按蹻) that treats disease by controlling Gi(Gi-Gong therapy). It makes treatment effects by pushing Sa-Gi(邪氣) which becomes aggregation-accumulation(積聚) to right places by using pointillage, stroking, and rubbing with doctor's focused intention(意念). The cervical spine connects body and brain, so treating cervical spine could be a foundation of all treatment. Discussion : WST. is a manual therapy that treats not only muscles, nerves, vessels, joints but also Oriental medicine concept-meridian, acupoint and Gi(氣). Conclusions: 1) WST. is a traditional manual therapy using Gi-Gong, 2) WST. changes Sa-Gi(邪氣) into Jung-Gi(正氣), which means curing aggregation-accumulation(積聚), 3) Cervical WST. treats a passage that connects upper and lower parts of human body; heart and brain, and 4) Cervical WST. is a treatment to activate So-Ju-Cheon(小周天), which controls human body immunity.

A Test of Moderating Effect of Superior Support Between Issue Leadership and Performance: With an Emphasis on Team Member's Issue Leadership (이슈리더십과 성과 간의 관계에서 상사지원의 조절효과 검증 -팀원의 이슈리더십을 중심으로-)

  • Shin, Sung-Hyun;Baik, Ki-Bok;Choi, Ji-Sun
    • The Journal of the Korea Contents Association
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    • v.15 no.6
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    • pp.463-476
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    • 2015
  • Until now most of the leadership studies have been focused to managers having in formal authority. However, in the recent business environment, team member should also demonstrate his leadership. Hence, the purpose of this study has been focused to the team member's leadership and their leadership effectiveness. In this study, we verified how the degree of master sergeant's support can control to moderate the intensity of the team member's leadership behavior. The analysis results were as follows: we have found that team member's issue leadership can effect on positive(+) way on the audience's acceptance to the leader as well as team performance. But the moderating effects of master sergeant's support on the team member's issue leadership and leader acceptance was not significant in terms of statistical point of view. It has also shown even the negative(-) effects of master sergeants's support on the team member's issue leadership and leader acceptance as well as team performance. Through this study, we can understand that the master sergeant's support may impeding the team member's independent leadership.