• Title/Summary/Keyword: Dimensional Control

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Housing / Urban Development Integrated with Flood-Control Reservoirs in Japan

  • Watanabe, Naoyuki
    • Land and Housing Review
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    • v.5 no.3
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    • pp.203-214
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    • 2014
  • The purpose of this paper is to introduce two integrated urban development projects in Japan that take full advantage of flood-control reservoirs: the Tetsugakudo Park Collective Housing Development Project and the Koshigaya Lake Town Project. The former project - implemented cooperatively by the Tokyo metropolitan government in charge of river management, Shinjuku and Nakano wards (in Tokyo) responsible for park management, and the Urban Renaissance Agency, a housing project developer - set a significant precedent for three-dimensional river use by realizing the three-dimensional integrated development of a flood control reservoir, a park, and collective housing. The Koshigaya Lake Town Project, launched as a drastic storm water management measure for a low-lying area often plagued by flooding, has achieved a sustainable coexistence between the waterfront environment and the urban living environment, with an artificial flood-control reservoir as the core for urban development. This project is fully committed to environmental coexistence through the optimal use of local environmental resources, with the cooperation of the central government, Saitama Prefecture and Koshigaya City.

Study on Non-linear Error Effect of Three Dimensional Control Surface Linkage Using Kinematic Analysis (3차원 조종면 변위센서 링크의 운동학적 해석을 통한 비선형 오차 영향 연구)

  • Lee, Sug-Chon;Kim, Jae-Eun;Lee, Sang-Jong
    • Journal of Aerospace System Engineering
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    • v.5 no.1
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    • pp.1-6
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    • 2011
  • It is very important to correctly set control surface linkage. But a lot of bad setting case has been seen in especially remote controled airplanes and middle size UAVs. In this paper, a three dimensional linkage from control surface to deflection sensor was analyzed kinematically and a position analysis was simulated using algebraic algorithm in terms of nonlinear error of deflection angle. Three correct settings of the linkage came out of this research. One is two-dimensional motion, another is link ratio of 1 and the other is that effective lever of the control surface should be perpendicular to a pushrod in their neutral position.

Development of Unit Commitment Methodology Considering Direct Load Control by 3-Dimensional Dynamic Programming (3차원 동적계획법에 의한 직접부하제어를 고려한 기동정지계획 방법론의 개발)

  • Lee, Buhm;Kim, Yong-Ha;Choi, Sang-Kyu;Kim, Hyeong-Jung
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.51 no.12
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    • pp.591-596
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    • 2002
  • This Paper Presents a new methodology for Direct Load Control(DLC) and Unit Commitment. To consider economical effect of DLC, we developed 3-Dimensional dynamic programming which can combine unit commitment and DLC. Traditional dynamic programming has 2-Dimensional which consist of state and stage, but newly developed dynamic programming has DLC state, U.C. state, and stage. As a result, economical DLC and unit commitment schedule of the power system is possible. This method is applied to the test system, and the usefulness of the method is verified.

A STUDY ON DIMENSIONAL STABILITY OF IMPRESSION MATERIALS FOLLOWING IMMERSION DISINFECTION (수종 인상재의 침지 소독이 경석고 모형의 크기 안정성에 미치는 영향에 관한 연구)

  • Song, Ki-Yong;Yang, Jae-Ho;Lee, Sun-Hyung;Chung, Hun-Young
    • The Journal of Korean Academy of Prosthodontics
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    • v.37 no.4
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    • pp.506-515
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    • 1999
  • Dental practice can produce and spread some infectious diseases from patients to dentist, dental assistant, and dental labors. One possible method for preventing these cross-contamination is to immerse dental impression in chemical disinfectants. So for many investigators studied on the dimensional changes of dental impressions and on the surface qualities of stone casts made from impression following immersion in disinfectants. This study was proposed to evaluate some popular impression disinfectant combination from the point of dimensional stability. Impression was taken from dental arch-shaped metal model. Irreversible hydrocolloid and 3 elastomers(polyvinyl siloxane, polysulfide, polyether) were immersed in 3 disinfectants (2% glutaraldehyde, 1% povidone-iodine, 0.5% sodium hypochlorite) for 10 minutes and measured both cross-arch and anterior-posterior distance under stereo microscope to evaluate dimensional change. The results obtained were as follows: 1. Dimensional changes of irreversible hydrocolloid impression was statistically different in cross-arch and anterior-posterior distance when immersed in 2% glutaraldehyde solution and in anterior-posterior distance when immersed in 0.5% sodium hypochlorite solution from control group (p<0.05). 2. Dimensional changes of polyvinyl siloxane and polysulfide impression were not statistically different from control group (p>0.05). 3. Dimensional changes of polyether impression was statistically different in cross-arch distance when immersed in 0.5% sodium hypochlorite solution and in anterior-posterior distance when immersed in 1% povidone-iodine solution from control group (p<0.05). 4. In all cases, dimensional changes were less than 0.1% from the original dimension and concluded clinically acceptable.

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Application of the Genetic Algorithm to the Layout Problem of the Pane Considering Rotation (회전을 고려한 판재 배치 문제의 유전 알고리즘 적용)

  • 이금탁;김훈모
    • Journal of Institute of Control, Robotics and Systems
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    • v.6 no.5
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    • pp.376-382
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    • 2000
  • A problem of relevant interest to some industries is that of the optimum two-dimensional layout. In this problem, one is given a number of rectangular sheets and an order for a specified number of each of certain types of two-dimensional regular and irregular shapes. The aim is to cut the shapes out of the sheets in such a way as to minimize the amount of waste produced. In this paper, we propose a genetic algorithms using rotation parameters by which the best pattern of layout is found.

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Active control of noise induced by rotating machines - A 3-dimensional enclosure case (회전기에 의한 소음 제거를 위한 능동 소음 제어 - 3차원 공간의 경우)

  • Nam, Hyun-Do;Ahn, Dong-Jun;Lee, Ho-Seok
    • Proceedings of the KIEE Conference
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    • 1993.07a
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    • pp.290-292
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    • 1993
  • In this paper, analysis of the noise induced by rotating machines and the mode analysis of a 3-dimensional enclosure are presented. Adaptive active noise control algorithms for the multi-channel case are proposed. Computer simulations were done to show usefulness of the designed algorithm in a 3-dimensional enclosure case.

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STRONG CONTROLLABILITY AND OPTIMAL CONTROL OF THE HEAT EQUATION WITH A THERMAL SOURCE

  • Kamyad, A.V.;Borzabadi, A.H.
    • Journal of applied mathematics & informatics
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    • v.7 no.3
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    • pp.787-800
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    • 2000
  • In this paper we consider an optimal control system described by n-dimensional heat equation with a thermal source. Thus problem is to find an optimal control which puts the system in a finite time T, into a stationary regime and to minimize a general objective function. Here we assume there is no constraints on control. This problem is reduced to a moment problem. We modify the moment problem into one consisting of the minimization of a positive linear functional over a set of Radon measures and we show that there is an optimal measure corresponding to the optimal control. The above optimal measure approximated by a finite combination of atomic measures. This construction gives rise to a finite dimensional linear programming problem, where its solution can be used to determine the optimal combination of atomic measures. Then by using the solution of the above linear programming problem we find a piecewise-constant optimal control function which is an approximate control for the original optimal control problem. Finally we obtain piecewise-constant optimal control for two examples of heat equations with a thermal source in one-dimensional.

Investigating Relationship between Control Mechanisms, Trust and Channel Outcome in Franchise System

  • YI, Ho-Taek;FORTUNE, Amenuvor Edem;YEO, Chan-Koo
    • Journal of Distribution Science
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    • v.17 no.9
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    • pp.67-81
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    • 2019
  • Purpose - The overarching aim of this study is to empirically test the effect of ex-post control mechanisms on multi-dimensional trust and channel performance in franchise systems. Although the franchise system is a vertical marketing channel based on trust between the franchisor and the franchisees, issues related to franchisee's opportunistic behavior have persisted and thus requires research into the effective control system of franchise headquarters. Research design, data, and methodology - In this study, data was collected from 150 franchises to identify the effect of two types of franchising headquarters' control system on the multi-dimensional trust and franchise channel outcome between franchisor and franchisee. To test the hypotheses intended to achieve this aim, structural equations modeling technique is utilized. Results - The results of this research reveal that among the two formal control systems studied (output and process control), output control positively and significantly affects multidimensional trust. Additionally, among the three dimensions of trust employed in this study, only expertise has a positive and significant effect on contract compliance. Equally, only expertise and integrity have a negative and significant effect on opportunistic behavior. Conclusions - The study provides managerial and theoretical insights into understanding ex-post control mechanisms, trust, compliance and opportunistic behaviors in franchise systems.

Finite Dimensional Compensator Design for a Class of Infinite Dimensional Systems (무한 차원 시스템을 위한 유한 차원 보상기의 설계)

  • 서진헌
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.37 no.6
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    • pp.414-421
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    • 1988
  • This paper is concerned with a design procedure for constructing finite dimensional compensators for a class of infinite dimensional aystems. Basically, this procedure consists of decomposing the state space of the basis of its modes and utilizing well-known finite dimensional algorithms for constructing observers and state feedback control laws. The finite dimensional observer dynamics is modified to account for the effect of the residual modes so as to achieve the stabelity of the closed loop system asymptotically.

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2D Grid Map Compensation using an ICP Algorithm (ICP 알고리즘을 이용한 2차원 격자지도 보정)

  • Lee, Dong-Ju;Hwang, Yu-Seop;Yun, Yeol-Min;Lee, Jang-Myung
    • Journal of Institute of Control, Robotics and Systems
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    • v.20 no.11
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    • pp.1170-1174
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    • 2014
  • This paper suggests using the ICP (Iterative Closet Point) algorithm to compensate a two-dimensional map. ICP algorithm is a typical algorithm method using matching distance data. When building a two-dimensional map, using data through the value of a laser scanner, it occurred warping and distortion of a two-dimensional map because of the difference of distance from the value of the sensor. It uses the ICP algorithm in order to reduce any error of line. It validated the proposed method through experiment involving matching a two-dimensional map based reference data and measured the two-dimensional map.