• Title/Summary/Keyword: anchor frame

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On determining seismic anchor force of anchoring frame structure supporting three-stage slope

  • Lin, Yu-liang;Lu, Li;Li, Ying-xin;Xue, Yuan;Feng, Zhi-jun;Wang, Zhi-meng;Yang, Guo-lin
    • Geomechanics and Engineering
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    • v.22 no.3
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    • pp.265-275
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    • 2020
  • As a flexible supporting structure, the anchoring frame structure is widely adopted to support multistage slopes in high earthquake-intensity area for its effectiveness and practicality. The previous study indicates that the anchor of anchoring frame structure is the most likely to be damaged during earthquakes. It is crucial to determine the pull-out capacity of anchor against seismic force for the seismic design of anchoring frame structure. In this study, an analytical model of a three-stage slope supported by anchoring frame structure is established, and the upper bound method of limit analysis is applied to deduce the seismic anchor force of anchoring frame structure. The pull-out capacity of anchor against seismic force of anchoring frame structure at each stage is obtained by computer programming. The proposed method is proved to be reasonable and effective compared with the existing published solution. Besides, the influence of main parameters on the pull-out capacity of anchor against seismic force is analyzed to provide some recommendations for the seismic design of anchoring frame structure.

An Automatic News Video Semantic Parsing Algorithm (뉴스 동영상 자동 의미 분석 알고리즘)

  • 전승철;박성한
    • Proceedings of the IEEK Conference
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    • 2001.06c
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    • pp.109-112
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    • 2001
  • This paper proposes an efficient algorithm of extracting anchor blocks for a semantic structure of a news video. We define the FRFD to calculate the frame difference of anchor face position rather than simply uses the general frame difference. Since, The FRFD value is sensitive to existing face in frame, anchor block can be efficiently extracted. In this paper, an algorithm to extract a face position using partial decoded MPEG data is also proposed. In this way a news video can be structured semantically using the extracted anchor blocks.

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Rule-Based Anchor Shot Detection Method in News Video: KBS and MBC 9 Hour News Cases (규칙기반 뉴스 비디오 앵커 TIT 검출방법: KBS와 MBC 9시 뉴스를 중심으로)

  • Yoo, Hun-Woo;Lee, Myung-Eui
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.1
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    • pp.50-59
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    • 2007
  • In this paper, an anchor shot detection method, which is a basic technology for managing news videos for index and retrieval purposes is proposed. To do that, two most popular news program such as 'KBS 9 Hour News' and 'MBC 9 Hour News' are analyzed and 4-step rule based detection method is proposed First, in the preprocessing, video shot boundaries are detected and the 1st frame of each shot is extracted as a key frame. Then, the detected shot is declared as an anchor shot, if all the following 4 conditions are satisfied. 1) There is an anchor face in the key frame of a shot. 2) Spatial distribution of edges in the key frame is adequate. 3) Background color information of the key frame is similar to the color information of an anchor model. 4) Motion rate in the shot is low. In order to show the validity of the proposed method, three 'KBS 9 Hour News' and three 'MBC 9 Hour News', which have total running time of 108 in minute and are broadcasted at different days, are used for experiments. Average detection rates showed 0.97 in precision, 1.0 in recall, and 0.98 in F-measure.

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Anchor Frame Detection Using Anchor Object Extraction (앵커 객체 추출을 이용한 앵커 프레임 검출)

  • Park Ki-Tae;Hwang Doo-Sun;Moon Young-Shik
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.43 no.3 s.309
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    • pp.17-24
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    • 2006
  • In this paper, an algorithm for anchor frame detection in news video is proposed, which consists of four steps. In the first step, the cumulative histogram method is used to detect shot boundaries in order to segment a news video into video shots. In the second step, skin color information is used to detect face regions in each shot boundary. In the third step, color information of upper body regions is used to extract anchor object, which produces candidate anchor frames. Then, from the candidate anchor frames, a graph-theoretic cluster analysis algorithm is utilized to classify the news video into anchor-person frames and non-anchor frames. Experiment results have shown the effectiveness of the proposed algorithm.

An Efficient Anchor Range Extracting Algorithm for The Unit Structuring of News Data (뉴스 정보의 단위 구조화를 위한 효율적인 앵커구간 추출 알고리즘)

  • 전승철;박성한
    • Journal of Broadcast Engineering
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    • v.6 no.3
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    • pp.260-269
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    • 2001
  • This paper proposes an efficient algorithm extracting anchor ranges that exist in news video for the unit structuring of news. To this purpose, this paper uses anchors face in the frame rather than the cuts where the scene changes are occurred. In anchor range, we find the end position (frame) of anchor range with the FRFD(Face Region Frame Difference). On the other hand, in not-anchor range, we find the start position of anchor range by extracting anchors face. The process of extracting anchors face is consists of two parts to enhance the computation time for WPEG decoding. The first pact is to find candidates of anchors face through rough analysis with partial decoding MPEG and the second part is to verify candidates of anchors face with fully decoding. It is possible to use the result of this process in basic step of news analysis. Especially, the fast processing and the high recall rate of this process are suitable to apply for the real news service.

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An Analytical Study on Primary Anchor Unit for ALC Panel Curtain-wall (ALC 패널 커튼월용 부품 Primary Anchor의 해석적 연구)

  • Yoon, Myung-Ho;Ryu, Chang-Hyun
    • Journal of the Korean Society for Advanced Composite Structures
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    • v.2 no.1
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    • pp.8-14
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    • 2011
  • This study aims at grasping the structural performances of primary anchor assemblage through a nonlinear finite element analysis. Primary anchor unit may be used as one of the connection devices between ALC panel curtain-wall and RC slab or main frame of a building. From the analytical results structural characteristics such as yield strength, initial stiffness and maximum strength are obtained and fully discussed.

A New Anchor Shot Detection System for News Video Indexing

  • Lee, Han-Sung;Im, Young-Hee;Park, Joo-Young;Park, Dai-Hee
    • Journal of the Korean Institute of Intelligent Systems
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    • v.18 no.1
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    • pp.133-138
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    • 2008
  • In this paper, we propose a novel anchor shot detection system, named to MASD (Multi-phase Anchor Shot Detection), which is a core step of the preprocessing process for the news video analysis. The proposed system is composed of four modules and operates sequentially: 1) skin color detection module for reducing the candidate face regions; 2) face detection module for finding the key-frames with a facial data; 3) vector representation module for the key-frame images using a non-negative matrix factorization; 4) one class SVM module for determining the anchor shots using a support vector data description. Besides the qualitative analysis, our experiments validate that the proposed system shows not only the comparable accuracy to the recently developed methods, but also more faster detection rate than those of others.

An Experimental Study For Improvement of Joint Detail of Steel Pier - Foundation (강재교각 기초부의 연결상세 개선을 위한 실험적 연구)

  • Kim, Hee-Ju;Ham, Jun-Su;Yang, Sung-Don;Hwang, Won-Sup
    • Journal of Korean Society of Steel Construction
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    • v.24 no.5
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    • pp.491-501
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    • 2012
  • Generally, a steel pier-foundation has been designed and constructed with a anchor frame. However, because of the complicated design and construction, the foundation's size has become large and has been overdesigned. In this study, three specimens were made and the tests were conducted to suggest a new shape in regard to the pier-foundation's joint details using the high performance steel. One of the specimens was made up of the general anchors and the anchor frame. Another specimen consisted of the high tension anchors and the studs, and the other specimen was composed of the high tension anchors and the inner steels. After the performance of each specimen was compared and analyzed, the behavior characteristics according to the joint were analyzed.

Design Considerations and Pull-Out Behavior of Mechanical Anchor of Reinforcement (철근 기계적 정착장치의 설계 고려사항과 인발특성)

  • 천성철;김대영
    • Journal of the Korea Concrete Institute
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    • v.13 no.6
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    • pp.593-601
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    • 2001
  • In RC structure, sufficient anchorage of reinforcement is necessary for the member to produce the full strength. Generally, conventional standard hook is used for the reinforcement's anchorage. However, the use of standard hook results in steel congestion, making fabrication and construction difficult. Mechanical anchor offers a potential solution to these problems and may also ease fabrication, construction and concrete placement. In this paper, the required characteristics and the design considerations of mechanical anchor were studied. Also, the mechanical anchor was designed according to the requirements. To investigate the pull-out behavior and properness of mechanical anchorage, pull-out tests were performed. The parameters of tests were embedment length, diameter of reinforcement, concrete compressive strength, and spacing of reinforcements. The strengths of mechanical anchor were consistent with the predictions by CCD method. The slip between mechanical anchor and concrete could be controlled under 0.2mm. Therefore, the mechanical anchor with adequate embedment could be used for reinforcement's anchorage. However, it was observed that the strength of mechanical anchors with short spacing of reinforcements was greatly reduced. To apply the mechanical anchor in practice (e.g. anchorage of the beams reinforcements in beam-column joint), other effects that affect the mechanical anchor mechanism, such as confinement effect of adjacent member from frame action or effects of shear reinforcement, should be considered.

Characteristics of Lead Frame Chip Scale Package(LF-CSP)

  • Hong, Sung-Hak
    • Proceedings of the International Microelectronics And Packaging Society Conference
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    • 1999.12a
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    • pp.63-85
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    • 1999
  • $\cdot$New CSP using Lead Frame and solder ball techniques. $\cdot$EMC needs high filler content, low CTE and high flexural modulus. $\cdot$Solder Joint Reliability improved by anchor leads. .Uniform inner lead shape would be better at capacitance values. $\cdot$Low Assembly cost CSP.

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