• Title/Summary/Keyword: 스트랩

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Stable Power Plan Technique for Implementing SoC (SoC 구현을 위한 안정적인 Power Plan 기법)

  • Seo, Young-Ho;Kim, Dong-Wook
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.12
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    • pp.2731-2740
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    • 2012
  • ASIC(application specific integrated circuit) process is a set of various technologies for fabricating a chip. Generally there have been many researches for RTL design, synthesis, floor plan & routing, low power scheme, clock tree synthesis, and testability which are widely researched in recent. In this paper we propose a new methodology of power strap routing in basis of design experience and experiment. First the power strap for vertical VDD and VSS and horizontal VDD and VSS is routed, and then after the problems which are generated in this process are analyzed, we propose a new process for resolving them. For this, the strap guide is inserted to protect the unnecessary strap routing and dumped for next steps. Next the unnecessary power straps which are generated the first inserting process are removed, and the pre-routing is performed for the macro cells. Finally the resultant power straps are routed using the dumped routing guide. Through the proposed process we identified the efficient and stable route of the power straps.

Experimental Study on the Cyclic Behavior of Modular Building with Strap Braced Load Bearing Steel Stud Walls (스트랩 브레이스를 갖는 내력벽식 모듈러건축 스틸스터드 벽체의 반복하중에 대한 거동 연구)

  • Lee, Doo Yong;Cho, Bong Ho;Kim, Tae Hyeong;Ha, Tae Hyu
    • Journal of Korean Society of Steel Construction
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    • v.28 no.6
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    • pp.415-425
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    • 2016
  • Load-bearing steel stud wall system is widely used for the middle-to-high rise modular buildings worldwide. Seismic performance is a key issue to apply load-bearing steel stud wall system to modular buildings in Korea. This study proposes a new strap braced steel stud wall system with enhanced seismic performance and design equations considering the flexural behaviour of the vertical outer studs. For the verification, two specimens with different strap braces and vertical outer stud were designed and tested. The test results showed that the total strengths were evaluated to be 1.11 to 1.18 times higher than the predicted values. Usually strap braced walls are considered to have low energy dissipation capacities. The proposed system showed enhanced seismic performance with equivalent damping of 9.42% due to the reduced pinching effects.

Nonlinear Dynamic Behavior of a Cold-Formed Steel Shear Panel by Shaketable Tests (진동대 실험을 통한 조립식 스틸 전단 패널의 비선형 동적 거동)

  • Kim, Tae-Wan;Lee, Moon-Sung
    • Journal of the Earthquake Engineering Society of Korea
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    • v.9 no.6
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    • pp.31-39
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    • 2005
  • The purpose of this study was to investigate the nonlinear behavior of a cold-formed steel (CFS) shear panel, which was composed of built-up columns and tension-only diagonal straps for bracing, when excited by earthquake motions. For the purpose, shaketable tests of a full-scale two-story cold-formed steel (CFS) shear panel were conducted. in the shear panel, the diagonal strap is a major lateral force resisting system, which is a very ductile member, and the columns, which are gravity resisting members, are fabricated by wooing studs, which can't develop their full flexural strength because they may buckle locally. The test results showed that the straps dissipate most of energy of the shear panel in a tension-only and pinched way and the columns dissipate it relatively smaller than the straps but they still contribute to overall dissipation. As a result of this study, investigating real nonlinear behavior of a structure in earthquakes is a very important process by shaketable tests even though it is simple.

A Study on Calculation of Test Load for Full-Scale Airframe Structural Test of Composite Aircraft (복합재 항공기 전기체 구조시험 시험하중 산출 방법 연구)

  • Choi, Ik-Hyeon;Ahn, Seok-Min
    • Aerospace Engineering and Technology
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    • v.10 no.2
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    • pp.146-153
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    • 2011
  • Some methods of calculation of test load value from design load data were investigated which will be applied at strap installed full-scale airframe of composite aircraft. These methods were applied to left wing of KC-100 composite aircraft and the calculated test load values were compared with each others. Generally since test load values are differently calculated according to each aircraft type and position of straps, all calculation methods mentioned at this study need to be applied and compared to each aircraft. Finally the most appropriate method needs to be selected.

The Application of Bootstrap Methods for Correspondence Analysis (대응분석에 있어서 붓스트랩 방법의 활용에 대한 고찰)

  • 강창완;김대학;전명식
    • The Korean Journal of Applied Statistics
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    • v.14 no.2
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    • pp.401-413
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    • 2001
  • 이차원 분할자료에 대해서 행과 열의 관계를 저차원상에 시각적으로 표현하는 탐색적대응분석에 대하여 붓스트랩방법의 사용가능성을 살펴보았다. 기존의 탐색적 면만이 강조되어 왔던 대응분석에서 좌표점의 변이와 좌표점간의 거리에 대한 통계적 추론을 붓스트랩방법으로 해결할 수 있음을 보이고 또한 좌표축의 설명력에 대하여 붓스트랩신뢰구간의 포함확률의 일치성을 모의실험을 통해 제시하였다.

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An Experimental Study on Uniaxial Compressive Behavior of RC Circular Columns Laterally Confined with Prestressing Aramid Fiber Strap (아라미드 스트랩으로 프리스트레싱 횡구속된 RC 원형기둥의 일축압축거동에 관한 실험적 연구)

  • Han, Sang-Hoon;Hong, Ki-Nam;Lee, Jae-Bum
    • Journal of the Korea Concrete Institute
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    • v.21 no.2
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    • pp.159-168
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    • 2009
  • In this study, strength, stiffness and confinement effect with stress-strain and stress-volumetric strain curves for improved uniaxial compressive behavior of RC circular columns laterally confined with prestressing aramid fiber strap were experimentally investigated. The test variables were the specimens with or without axial reinforcing bar and the number and spacing of strap, prestressing level, the types of reinforcing fiber (CFS, GFS). As a result, the failure type of the columns was very stable and strength increase rate was about 73% comparison with the general RC columns. Moreover, the strain increase rate is very small and the axial displacement confinement effect was very effective compared with existry methods (CFS, GFS), the initial and final lateral confinement effect was excellent.

Study on Co-Simulation Method of Dynamics and Guidance Algorithms for Strap-Down Image Tracker Using Unity3D (Unity3D를 이용한 스트랩 다운 영상 추적기의 동역학 및 유도 법칙 알고리즘의 상호-시뮬레이션 방법에 관한 연구)

  • Marin, Mikael;Kim, Taeho;Bang, Hyochoong;Cho, Hanjin;Cho, Youngki;Choi, Yonghoon
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.46 no.11
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    • pp.911-920
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    • 2018
  • In this study, we performed a study to track the angle between the guided weapon and the target by using the strap-down image seeker, and constructed a test bed that can simulate it visually. This paper describes a method to maintain high-performance feature distribution in the implementation of sparse feature tracking algorithm such as Lucas Kanade's optical flow algorithm for target tracking using image information. We have extended the feature tracking problem to the concept of feature management. To realize this, we constructed visual environment using Unity3D engine and developed image processing simulation using OpenCV. For the co-simulation, dynamic system modeling was performed with Matlab Simulink, the visual environment using Unity3D was constructed, and computer vision work using OpenCV was performed.

붓스트랩방법의 실제적활용1) -군집표본추출법에 근거한 분할표분석을 중심으로

  • 전명식
    • Communications for Statistical Applications and Methods
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    • v.3 no.1
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    • pp.179-188
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    • 1996
  • 복합조사표본추출법(complex survey sampling)에 근거한 분할표분석에 카이제곱검정법을 사용할 때의 문제점들과 해결방법들을 살펴보았다. 나아가, 군집표본추출의 경우에 붓스트랩방법의 타당성을 보였으며, 실제자료분석을 통하여 실제 활용가능성과 잇점을 제시하였다.

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Wearable touch sensor array integrated with energy harvester (인체 착용을 위한 압전에너지 융합형 촉각센서 어레이)

  • Park, Jiwook;Ahn, Yongho;Yun, Kwang-Seok
    • Proceedings of the KIEE Conference
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    • pp.1221-1222
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    • 2015
  • 본 연구에서는 촉각 센서와 에너지 수확소자가 한 소자에 융합되어있는 구조를 제안한다. 이 소자는 압전 스트랩과 유연한 튜브, 폴리머 필름으로 구성되어있으며, 유연하며 잘 늘어나는 직물구조를 갖는다. 완성된 소자에 수평방향의 인장 및 수축 힘이 가해지면 전압이 발생하여 에너지 수확소자로 동작하며, 수직방향의 힘이 가해지면 정전용량이 변화하여 촉각센서로 동작한다. 제작한 소자가 에너지 수확소자로 동작할 때 최대 36.6 V의 출력 전압이 측정되었으며, 소자를 누르는 수직힘이 증가할수록 정전용량이 커지는 것을 확인하였다.

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Systematic Review on the Type and Method of Convergence Study of Inertial Measurement Unit (관성 측정 장치의 융합연구 형태와 방법에 관한 체계적 고찰)

  • Lee, Hey-Sig;Park, Hae-Yean
    • Journal of the Korea Convergence Society
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    • v.11 no.3
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    • pp.119-126
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    • 2020
  • The purpose of this study is to identify trends in the type and method of Inertial Measurement Unit (IMU) by investigating studies on the type and method of convergence study of the IMU by systematic review. The study was conducted using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. 23 studies that meet the selection criteria were selected from 630 studies identified by three databases. As a result of this study, showed that various research using IMU was being conducted around the world, and the type of IMU was strap, full body suit, belt, wrist watch, shoes and glove. Among them, the number of strap-type IMUs was the largest at 11. The IMU's strengths were simplicity, real-time data collection and ease of application, which were used as measurement methods such as task, walking, and range of joint. The result of this study is expected to be used as basic data for experts in the medical and rehabilitation fields that conduct IMU research.