• Title/Summary/Keyword: Anchor Effect

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Pullout Behavior of Typical friction Anchors and Development of Design Method (앵커 형식별 인발거동과 설계법 개발)

  • 송일준;김가야;홍석우
    • Journal of Ocean Engineering and Technology
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    • v.17 no.4
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    • pp.43-51
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    • 2003
  • The resistance mechanism of anchor changes according to the types of anchor. Friction anchors are classified into tension and compression types. In this study, the characteristics and mechanism of pullout are analysed, and the design method of anchor and computer program for design are developed through compression test results of anchor body grout. The characteristics of compression anchor, compared with tension anchor, are summarized mainly as follows: (1) The effect of progressive failure of compression anchor body are much smaller than those of tension anchor during pullout of anchor: (2) The skin friction resistance is increased by Possion effect of grout (anchor body) during pullout of compression anchor.

The Impacts of News Lasciviousness, News Anchor's Mention and Attractiveness on Viewers (앵커 멘트의 선정성이 시청자에 미치는 영향: 앵커 매력성과 시청자 성별의 조절효과를 중심으로)

  • Park, Dongmin;Yoon, Sungwook
    • Journal of Service Research and Studies
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    • v.10 no.2
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    • pp.59-76
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    • 2020
  • The purpose of this study is to analyze the impacts of the lasciviousness of news anchor's mention on viewers'negative emotions, news reliability and their attitude towards the broadcasting company. This study also analyzed the moderating effect of anchor's attractiveness and viewers' sex. First, the more lascivious anchor's mention in news report gets, the more negative the viewers felt. Second, stronger lascivious expressions of news anchor's mention in news report had a negative effect on news reliability. Third, the moderating effect of the anchor attractiveness was found when news anchor's mention influences the viewers' attitude towards the broadcasting company : those who thought news anchor attractive showed less negative emotions and their news reliability and attitude towards the broadcasting company were higher compared to those who thought news anchor less attractive. Fourth, the moderating effect of the viewers' sex was found when news anchor's mention influences on viewers' negative emotions and the viewers' attitude towards the broadcasting company. This study has an academic and practical implication by studying the lasciviousness of news anchor's mention and anchor's attractiveness. This study is also a new approach of integrating the fields of journalism : News report and Anchor into the marketing fields : Attractiveness and Reliability. This can be meaningful for both journalism and marketing field.

Development of Design Method of Compression(SSC) Anchor (압축헝 앵커의 설계법 개발)

  • 임종철;홍석우;이태형;이외득
    • Journal of the Korean Geotechnical Society
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    • v.15 no.1
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    • pp.63-78
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    • 1999
  • For the design of compression anchor, three things should be considered. The first is a resistance force by skin friction, the second is a tension strength of tendon, and the third is a compressive strength of grout. Especially, compressive strength of grout is the most important design parameter of compression anchor. When compression anchor is pulled out from the ground, the compressive strength of grout increases by confining pressure of ground($\sigma_{tg$). Here, $\sigma_{tg$ is the confining pressure which is produced by earth pressure at rest and by lateral expansion of grout. We call this phenomenon of increase of confining pressure "poisson effect". In this paper, the design method of compression anchor called SSC anchor and the computer program for the design are developed through compression tests of anchor body grout.ody grout.

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Analysis on Reinforcing Effect at Fixed Part of Compression Anchor by Laboratory Element Tests (실내요소실험에 의한 압축형 앵커의 정착부 보강효과 분석)

  • 홍석우
    • Journal of Ocean Engineering and Technology
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    • v.16 no.5
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    • pp.49-55
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    • 2002
  • The compression anchor is characterized by decrement of progressive failure, simple site work, economy and durability compared with tension anchor. In this paper, compression anchor is analysed through the laboratory element tests. The formula to be estimate the grout strength in fixed part of compression anchor and the effective reinforcement method for several types of soil were suggested. The following conclusions were made from this study : (1) A formula, which is able to calculate the grout strength in the fixed part of the compression anchor, is suggested. (2) The strength increment ratios( $R_{si}$) are 100%, 132%, 147%, 217% according to the reinforcement method of grout. The reinforcement method is Non, Outside spiral, Inside-Outside spiral, Steel pipe, respectively. (3) The strength increment ratios( $R_{si}$) by reinforcing can be 8.23 times the strength increment effect according to the reinforcement types and ground confining pressure. (4) The steel pipe reinforcement is most effective in decomposed soil while, in the case of hard rock ground, high confining pressure is exerted on the grout, so there is no need to use reinforcements.

The Influence of Humor on Anchor Credibility and Viewers' Attitude toward the Anchor: A Moderating Effect of News Type (유머가 앵커에 대한 신뢰성과 시청자 태도에 미치는 영향: 뉴스 유형에 따른 조절효과)

  • Yoon, Sung-Wook;Park, Dong-Min
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.3
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    • pp.1541-1547
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    • 2014
  • The purpose of this study is to analyze the effect of the humor on anchor credibility, attitude and to examine the moderating impact of news type. We showed two versions of the news broadcast: one with humor, the other without it to 222 university students and analyzed how the presence of humor affects on the anchor credibility, attitude and examined the moderating role of news type. The results demonstrate that the use of humor has a negative influence on anchor credibility, but doesn't affect anchor attitude. Regarding the moderating effect of news type, the group who watched soft news was not influenced by the presence of humor, but the group who watched hard news revealed that their anchor attitude became dramatically better with the use of humor.

Prediction of Tensile Strength of a Large Single Anchor Considering the Size Effect

  • Kim, Kang-Sik;An, Gyeong-Hee;Kim, Jin-Keun;Lee, Kwang-soo
    • KEPCO Journal on Electric Power and Energy
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    • v.5 no.3
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    • pp.201-207
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    • 2019
  • An anchorage system is essential for most reinforced concrete structures to connect building components. Therefore, the prediction of strength of the anchor is very important issue for safety of the structures themselves as well as structural components. The prediction models in existing design codes are, however, not applicable for large anchors because they are based on the small size anchors with diameters under 50 mm. In this paper, new prediction models for strength of a single anchor, especially the tensile strength of a single anchor, is developed from the experimental results with consideration of size effect. Size effect in the existing models such as ACI or CCD method is based on the linear fracture mechanics which is very conservative way to consider the size effect. Therefore, new models are developed based on the nonlinear fracture mechanics rather than the linear fracture mechanics for more reasonable prediction. New models are proposed by the regression analysis of the experimental results and it can predict the tensile strength of both small and large anchors.

Effect of news anchor's gender on affect of viewers and memory of news (뉴스 진행자의 젠더가 수용자의 정서와 기억에 미치는 영향)

  • Park, Dug-Chun
    • Journal of Digital Convergence
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    • v.11 no.9
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    • pp.333-339
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    • 2013
  • This research explores the effect of TV news anchor's gender on affect of viewer and memory of news based on elaboration likelihood model. For this experimental research, 2 groups of subjects composed of university students were exposed to different types of TV news and responded to survey questions about affect and short-term and long-term memory. This research found that subjects exposed to woman anchor's news showed higher degree of affect and short-term memory, but lower degree of trust than subjects exposed to man anchor's news, but interactive effect of viewers' involvement and anchor's gender as an peripheral clue was not found.

An Exploratory Study on the Effect of Price as an Anchor on Willingness-to-pay: Anchoring-and-adjustment or Selective Accessibility

  • Song, Jae-Do
    • Asia Marketing Journal
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    • v.18 no.4
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    • pp.27-49
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    • 2017
  • The two competing underlying mechanisms of anchoring, anchoring-and-adjustment and selective accessibility, have very different managerial implications for the effect of price as an anchor on willingness-to-pay (WTP). To clarify their relative roles in inducing the anchoring effect, path analysis modeling in which two paths are included in a single model was utilized. The first path proceeds directly from anchor price to WTP, representing anchor-and-adjustment. The second path, representing selective accessibility, includes a mediator formed by various explanatory variables of WTP. The results consistently show that only the direct path, anchoring-and-adjustment, is significant. The results also show that the level of available product information has no significant moderation effect on both of the paths, which implies the robustness of the result with respect to information level.

Pullout Test of Retrofit Anchors using Deformed Reinforcement and Adhesive

  • Choi, Dong-Uk;Kim, Yon-Gon
    • KCI Concrete Journal
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    • v.11 no.3
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    • pp.201-210
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    • 1999
  • An experimental study was carried out to determine pullout behavior of a new type of anchor bolt that used deformed reinforcement and a commercial adhesive. Concrete slabs and columns with about 20-MPa compressive strength were used for 136 pullout tests performed. Test variables included anchor diameter (10 mm ~ 32 mm). embedment depth (10$\Phi$ or 15$\Phi$), edge effect. and Presence of transverse reinforcement in existing concrete. In Tyre-S test. where the edge or reinforcing steel effect was not included, the anchor Pullout strengths increased with increasing anchor diameters. Anchors with 15$\Phi$ embedment depth had higher Pullout strengths than those with 100 embedment depth The largest average Pullout load of 208 kN was determined for anchors made with D25 reinforcement and with 15$\Phi$ embedment depth. In Type-E tests, where the anchors were installed close to the edge of existing concrete, there were reductions in pullout strengths when compared to those determined in Type-S tests. In Type-ER tests, influence of the reinforcement in existing concrete on the anchor pullout strengths was examined using reinforced concrete and plain concrete columns Test results indicated that existing transverse reinforcement (column ties) did not help increase the pullout strength. The overall pullout test results revealed that the new anchor bolt can develop large pullout strengths while the anchors can be made of materials that are readily available in the market.

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A Case Study on the Effect of Soil Improvement on Anchor Bond Zone (지반개량에 의한 Anchor 정착부 개선효과 사례연구)

  • Kim, Tae-Seob;Song, Sang-Ho;Cho, Kyu-Wan;Lee, Jae-Dong
    • Proceedings of the Korean Geotechical Society Conference
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    • 2006.03a
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    • pp.1008-1013
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    • 2006
  • Ground anchor method is widely used in the large scale deep excavation of urban area to support a retained wall. Excavation using the ground anchor as a supporting system near a building have many difficulties due to the limitation of construction space. This method can not be applied to the site with the insufficient space from the retained wall to the boundary line. In this case, soil improvement at the anchor bond zone can be used to secure the frictional resistance of ground anchor within the boundary. Through this method, the bond length of anchor can be shortened considerably. This paper deals with the case study on the ground excavation adjacent to a building. The object field is Yongsan Park Tower Construction Site. In this site, the enlarged anchor with soil improvement was applied to solve the problem due to the limitation of construction space. According to the results of field test and monitoring, the anchor with soil improvement is very effective to secure the frictional resistance at the anchor bond zone.

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