• Title/Summary/Keyword: Height Control

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A Fundamental Study of Optimization to Control on Height of Roller Shade in Office Building through Mock-up Experiment (Mock-up 실험을 통한 사무소 건축물의 Roller Shade 높이 제어 최적화에 관한 기초적 연구)

  • Lim, Ji-Sun;Kim, Yu-Sin;Choi, An-Seop;Lee, Jeong-Ho
    • 한국태양에너지학회:학술대회논문집
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    • 2008.04a
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    • pp.148-153
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    • 2008
  • An inflow of daylight to the room offers comfortable view environment, psychological and physical security to people in the room and there are merits such as a work efficiency and energy saving. But, it has many problems as an excessive direct sunlight, cooling and heating. We can expect to have energy saving effect for illumination with comfortable view environment creation through control on height of roller shade. This study will be a used a fundamental approach to control on height of roller shade to changing daylight.

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A Study on the Fuzzy Control in the Modeling Equipment of the Height-level of Water by the Personal Computer

  • Munakata, Tsunehiro
    • 제어로봇시스템학회:학술대회논문집
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    • 2001.10a
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    • pp.93.6-93
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    • 2001
  • This paper describes the results on the fuzzy control in the modeling equipment of the height-level of water, in comparison with the results of PID control in the same system. By using two types of the fuzzy control, it is reported that the response rapidity, smoothness and complexity of the fuzzy control are superior to PID control by the experiment results.

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Growth Performance, Plasma Fatty Acids, Villous Height and Crypt Depth of Preweaning Piglets Fed with Medium Chain Triacylglycerol

  • Chwen, Loh Teck;Foo, Hooi Ling;Thanh, Nguyen Tien;Choe, D.W.
    • Asian-Australasian Journal of Animal Sciences
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    • v.26 no.5
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    • pp.700-704
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    • 2013
  • A study was conducted to investigate the effects of feeding medium chain triacylglycerol (MCT) on growth performance, plasma fatty acids, villus height and crypt depth in preweaning piglets. A total of 150 new born piglets were randomly assigned into one of three treatments: i) Control (no MCT); ii) MCT with milk (MCT+milk); iii) MCT without milk (MCT+fasting). Body weight, plasma fatty acid profiles, villus height and crypt depth were measured. Final BW for the Control and MCT+fasting was lower (p<0.05) than MCT+milk. The piglets fed with MCT regardless of milk provision or fasting had greater medium chain fatty acids (MCFA) than the Control. In contrast, the Control had greater long chain fatty acid (LCFA) and unsaturated fatty acid (USFA) than the MCT piglets. The piglets fed with MCT regardless of milk provision or fasting had higher villus height for the duodenum and jejunum after 6 h of feeding. Similar observations were found in piglets fed with MCT after 6 and 8 days of treatment. This study showed that feeding MCT to the piglets before weaning improved growth performance, with a greater concentration of MCT in blood plasma as energy source and a greater height of villus in duodenum, jejunum and ileum.

The Effects of Neuro-feedback Training on Self-regulation of Acquired Factors and Height Growth (뉴로피드백 훈련이 후천적 요인의 자기조절력과 키 성장에 미치는 영향)

  • MINGYANG, QU;Lee, Ji-An
    • Journal of Convergence for Information Technology
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    • v.8 no.6
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    • pp.15-20
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    • 2018
  • This study aimed to find an effective intervention measure through establishing the correlation between self-regulation (control over life style) and height growth through neuro-feedback training. 40 elementary students in grades two to four with height growth programs (20 experimental group students, 20 control group students) were examined for the changes before and after undergoing neuro-feedback training. The experiment lasted for three months with one 30-minute training session two times a week. After analyzing the differences in self-regulation among the control group with no neuro-feedback training and the experimental group with neuro-feedback training, the differences in height growth were analyzed. First of all, there were positive changes in self-regulation of the experimental group compared with the control group. Secondly, the experimental group showed larger changes in height growth. In conclusion, neuro-feedback training had positive effects upon the self-regulation that adjusts the acquired factors of height growth, which led to positive effects.

A Study on Real-time Control of Bead Height and Joint Tracking Using Laser Vision Sensor

  • Kim, H. K.;Park, H.
    • International Journal of Korean Welding Society
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    • v.4 no.1
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    • pp.30-37
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    • 2004
  • There have been continuous efforts on automating welding processes. This automation process could be said to fall into two categories, weld seam tracking and weld quality evaluation. Recently, the attempts to achieve these two functions simultaneously are on the increase. For the study presented in this paper, a vision sensor is made, a vision system is constructed and using this, the 3 dimensional geometry of the bead is measured on-line. For the application as in welding, which is the characteristic of nonlinear process, a fuzzy controller is designed. And with this, an adaptive control system is proposed which acquires the bead height and the coordinates of the point on the bead along the horizontal fillet joint, performs seam tracking with those data, and also at the same time, controls the bead geometry to a uniform shape. A communication system, which enables the communication with the industrial robot, is designed to control the bead geometry and to track the weld seam. Experiments are made with varied offset angles from the pre-taught weld path, and they showed the adaptive system works favorable results.

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Effectof natural type ABA foliar application on growth, yield of Codonopsis lancelata (天然型 ABA의 葉面散布가 더덕의 生長, 收量에 미치는 影響)

  • 김학현
    • Korean Journal of Plant Resources
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    • v.11 no.3
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    • pp.301-306
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    • 1998
  • In order to improve cultivation technuque of C. lanceolata, natural ABA was treated with foliar application periodically during differenctitation of node. The higher is concentration and the earier its foliar application was, the shoter plant height was. Especially, when $10mg;.L{-1}$ of ABA was treated at differentiated stage of 3rd node, plant height was inhibited to 60% of control. But leaf length, leaf width, and number of branches have no significant differnence in comparison wiht control. The fresh weight of subterranean part was similar to control independent of treat-time in the case of $10mg;.L{-1}$. When 1,5 and $10mg;.L{-1}$ of ABA were treated at initial differentiated node stage, plant height inhibited to 20~30% of control, but subterranean part was similar to control. All treatement showed slight antitumor activity by the P388 cytotoxic screening test.

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A Study of the Thermal Analysis for the Crack Control of Underground Pier Footing (지하 교각 기초의 온도균열 제어를 위한 수화열 해석 연구)

  • Park, Weon-Tae
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.10 no.2
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    • pp.91-101
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    • 2006
  • Lately, massive concrete structures are increasingly built. In such massive structures, the heat of hydration of mass concrete causes thermal cracks. To avoid thermal crack, methods widely acceptable for practical use are pre-cooling, pipe cooling and control of placing height. Thermal stress analysis is performed to find the way of controlling the thermal crack of pier footing mat in this paper. The footing mat model for the analysis is $12m{\times}14m$area and 3m height. The analysis results are compared with method of control of lift height and method of pipe cooling. The analysis results show that thermal crack can be removed by method of placing control and pipe cooling at footing mat placed on the ground.

Measurement Technique for Sea Height of Burst Using Image Recognition

  • Park, Ju-Ho;Hong, Sung-Soo;Kang, Kyu-Chang;Joon Lyou
    • Transactions on Control, Automation and Systems Engineering
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    • v.2 no.1
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    • pp.76-83
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    • 2000
  • A measurement technique of a sea height of burst is introduced for a proximate test using the image recognition of video cameras. In the burst of fuse on the ocean, the burst center of fuse, the sea surface level and the height of calibration poles are measured by the process of image obtained from cameras. Finally, the height of burst of fuse can be computed by Hough transform algorithm. The error compensation algorithms are proposed to eliminate the errors caused by camera level and environmental parameters. As a result of experiment, it has been proved that the proposed measurement system shows the recognition of the center point of the burst image with ${\pm}$0.5m error.

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TDOA Measurement Based Taylor Series Design Method Considering Height Error for Real-Time Locating Systems (실시간 위치추적 시스템에서 높이 오차를 고려한 TDOA 측정치 기반 테일러 급수 설계 방법)

  • Kang, Hee-Won;Hwang, Dong-Hwan;Park, Chan-Sik
    • Journal of Institute of Control, Robotics and Systems
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    • v.16 no.8
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    • pp.804-809
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    • 2010
  • This paper proposes a Taylor-series design method which reduces the height error of the tag when readers are arranged at the same height in 3-dimensional space. The proposed method consists of two steps. Firstly, the planar position is estimated by the Taylor-series method using the TDOA measurement. Next, the height is estimated from the estimated planar position. In order to show the validity of the proposed method, computer simulations were performed for the static case and linear trajectory of the tag. Results show that the proposed method gives convergent estimated position and better height estimate than the Taylor series method.

Height and Labor Market Outcome: Evidence from Panel Data (신장과 노동시장 성과 관계 : 패널 데이터를 이용한 분석)

  • Cho, Hyunkuk
    • Journal of Labour Economics
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    • v.37 no.2
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    • pp.79-103
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    • 2014
  • Previous studies show that tall people have better labor market outcomes, but controlling for their abilities reduces the size of height effects. This implies that a failure to properly control for one's ability could overestimate the OLS estimate. This paper contributes to the literature by being the first to control for individual fixed effects (FE) and to examine height effects on the probability of one's attaining a leadership position. The data used are panel data of a cohort obtained during the cohort's middle and high school years. In OLS estimation, this paper finds positive height effects for boys. However, when controlling for individual fixed effects, the estimate is not statistically significant. For girls, the height effects are found on neither OLS nor FE model.

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