• Title/Summary/Keyword: Measurement of association

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A Study on the Standardization of Anthropometric Terms (I) -Terms of measurement points and lines- (인체 측정용어의 표준화에 관한 연구(I) -측정기준에 관한 용어-)

  • 박수찬
    • Journal of the Korean Home Economics Association
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    • v.27 no.2
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    • pp.43-52
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    • 1989
  • This study deals with the standardization of anthropometric terms related to body measurement points and lines that are to be the basis in body measurement. It investigates the state-of-the art of anthropometric terms used among middle and high schools, universities, dressmaking schools, and experts and set up the directions of standardization. According to the directions, 39 body measurement points and 9 body measurement lines were studied and a draft standards on anthropometric terms was suggested.

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측정기의 효율적 운영에 관한 실증적 연구

  • Yu, Hyeon-Jong;Jeong, Su-Il
    • Journal of the Korea Construction Safety Engineering Association
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    • s.48
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    • pp.64-74
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    • 2009
  • Measurement is a essential part in all kinds of industry, especially in manufacturing. But until now, measurement hasn't been located to the core of manufacturing in domestic. This improvement guide line for the multilateral problems of measuring instrument investigation of small and medium-sized enterprises. To use measuring treat it must be accustomed with the structure, the performance, the method. must be corrected periodically. The correcting-schedule is established with accuracy, stability, purpose, condition, and frequency.

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Considerations for error factors in four measurement systems determined in JEITA standard ED2523 (Measuring methods for matrix reflective LCD modules)

  • Narutaki, Yozo;Sakai, Eiji;Shimizu, Shinji;Tsuda, Keisuke;Uehara, Masao;Uehara, Toshinori;Katoh, Shinsuke;Yoda, Yuji
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.1362-1365
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    • 2008
  • ED-2523 (Measuring methods for matr ix reflective LCD modules) was published by JEITA (Japan Electronics and Information Technology Industries Association) in 2001. Since then, round robin tests had been done and the accuracy of measurement values had been discussed. In this paper, considerations for error factors in four measurement systems are showed.

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A Study on Body Measurement for Slacks Construction (Mainly with women's College Student in Seoul City Area) (Slacks 구성을 위한 인체계측 -서울특별시의 여대생을 중심으로-)

  • 김경자
    • Journal of the Korean Home Economics Association
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    • v.17 no.2
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    • pp.1-8
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    • 1979
  • Recently, the Korean women has been steadily growing in number of wearing slacks , therefore the measurement data on lower part of body for slacks pattern construction have become needed. Thus, in order to obtain the measurement data, 304 of sophomore and junior classes form universities and colleges in Seoul city area were selected on purposed and , set to the object of study. In the course of measurement , thirteen items on lower part of body which is the basis of slacks pattern construction were measured, and then average balue, standard deviation and the mutual correlation were obtained.

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Strategies Used by Young Children in Weight Measurement Tasks ($4{\sim}6$세 유아의 무게 측정전략 발달에 관한 연구)

  • Rhee, Bo-Young;Kim, Ju-Young
    • Journal of the Korean Home Economics Association
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    • v.45 no.7
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    • pp.49-60
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    • 2007
  • The purpose of this study was to analyze the weight measurement tasks according to children's ages and whether 4-to 6-year-old children use proper measurement equipment to measure weight. The study subjects were 105 preschool children: 37,38, and 30 4-, 5-, and 6-year-old children, respectively. The results showed that young children use 3 to 4 strategies. They used a strategy to estimate objects visually on the first step in measurement by direct comparison. On the second step, in measurement by nonstandard unit, they held up objects with one hand or two hands. That is, two strategies were shown in measuring objects with hands in this second step. On the third step, which is measured by standard unit, they used a strategy to choose the equal arm balance out of suggested measurement equipment.

Adaptive Data Association for Multi-Target Tracking using Relaxation

  • Lee, Yang-Weon;Hong Jeong
    • Journal of Electrical Engineering and information Science
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    • v.3 no.2
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    • pp.267-273
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    • 1998
  • This paper introduces an adaptive algorithm determining the measurement-track association problem in multi-target tracking(MTT). We model the target and measurement relationships with mean field theory and then define a MAP estimate for the optimal association. Based on this model, we introduce an energy function defined over the measurement space, that incorporates the natural constraints for target tracking. To find the minimizer of the energy function, we derived a new adaptive algorithm by introducing the Lagrange multipliers and local dual theory. Through the experiments, we show that this algorithm is stable and works well in general environments. Also the advantages of the new algorithm over other algorithms are discussed.

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Planar near-field antenna measurement method based on symplectic relation and reaction concept

  • Cho, Yong-Heui
    • International Journal of Contents
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    • v.6 no.2
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    • pp.6-9
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    • 2010
  • Using symplectic relation and reaction concept, we propose a planar near-field antenna measurement method. A generalized probe compensation equation is deduced to obtain the probe correction formulation. To verify our approach, a reflector antenna with $1{\times}2$ horn array is fabricated and measured in the near-field measurement facility. The near-field measurement results are compared with the physical optics (PO) simulation. The results of measurement and simulation agree very well near to the mainbeam.

Verification for Reduction of Membrane Stress Measurement Equipment Size Using White Noise Sound Wave (화이트노이즈를 이용한 막장력 측정장치의 소형·경량화 검증)

  • Jin, Sang-Wook
    • Journal of Korean Association for Spatial Structures
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    • v.14 no.3
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    • pp.67-74
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    • 2014
  • The author has proposed and verified the accuracy through experiments on a method of measurement through the use of sound waves that not only can quantitatively measure each of the dual directions of the fiber axis with high accuracy of membrane tension created on the surface of the membrane structure, but also can be easily operated in the field of construction. This paper reports the solution for problems of variables caused in the process of downsizing of the measurement equipment in order for practical use, and verifies the correspondence possibility of various stress ratios.

Uncertainty Analysis of Hyung San River Discharge due to the methods of Discharge Measurement (유량측정방법에 따른 형산강유량의 불확실도 분석)

  • Seo, Kyu-Woo;Kim, Su-Hyun;Kim, Dai-Gon
    • Proceedings of the Korea Water Resources Association Conference
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    • 2005.05b
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    • pp.1538-1542
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    • 2005
  • This study is to secure more accurate data of the discharge on the measurement by gaining a reliable hydrological data through the comparison the present method of measuring them and the other way that is based ISO. This study suggests the applicable measurement method of the discharge that has reliance through general elements and the analysis of uncertainty by comparing and assaying the data of the Hyung San River that is measured by the present standard. The result of this study makes us realize that we should complement the measurement method of the discharge securing the reliable and accurate hydrological data Hydrological data is very important things to perform domestic river works or install some structure in river or coast. Securing reliable and accurate hydro-data and making a thesis should go on in other to do any construction in river or coast.

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TCE Exposure Assessment of Cleaning Workers (세척공정의 트리클로로에틸렌 TWA 및 STEL 평가 사례)

  • Hyun Soo Kim
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.33 no.1
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    • pp.3-5
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    • 2023
  • Objective: This study introduces exposure concentrations of time-weighted average standard (TWA) evaluation and short-time exposure standard (STEL) evaluation for trichloroethylene in the cleaning process. Methods: Trichloroethylene measurement was conducted according to the KOSHA Guide (A-24-2019) method. It was carried out twice. Results: As a result of the first measurement, TWA concentration exceeded 4 times the exposure standard and STEL concentration exceeded 16 times, but the inaccuracy and breakthrough of the collection time could not be considered, so the second measurement was conducted. The second measurement result was lower than the first measurement result, but exceeded the exposure standards (TWA, STEL). Conclusions: We were able to confirm that the exposure level of workers in the cleaning process using trichloroethylene exceeded the exposure standard. And it is also considered necessary to grasp the approximate concentration using a detector tube in the preliminary survey.