• Title/Summary/Keyword: measuring scale

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An Analysis on Elementary Students' Measuring Abilities by Using a Microgenetic Method (미시발생학적 방법을 이용한 초등학생의 측정 능력 분석)

  • Yang, Il-Ho;Song, Jin-Lyoung;Lim, Sung-Man;Lim, Jae-Keun
    • Journal of Korean Elementary Science Education
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    • v.27 no.4
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    • pp.341-355
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    • 2008
  • The purpose of this study was to analyze the measuring abilities of elementary school students by using a microgenetic method. The participants were seven elementary students in the fourth grade. To analyze their measuring abilities, students attended three physical quantities measuring tasks such as length, volume, and time task by six times. Results were as follows. First, in the measuring length task, students selected appropriate measuring instruments but they didn't consider measuring amounts. And as their measuring experience increased, they desirably improved management abilities of measuring instruments. In the measuring volume task, they dealed with measuring instruments, but not very well. And these tendency were maintained. In the measuring time task, they were not measure exactly. Second, as their measuring experience increased, their ability to read the scale marks improved. However, they had difficulties in estimating the volume between scale marks. Results indicate that, elementary students need to basic education about measuring instruments, their usage, and scale reading ability for their science experiment courses in schools.

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Performance Assessment of Elementary 'School Children's Measuring Skills (초등학생들의 측정 수행 능력 평가)

  • Jung, Gui-Hyang;Kim, Beom-Ki
    • Journal of The Korean Association For Science Education
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    • v.17 no.2
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    • pp.127-137
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    • 1997
  • The purpose of this study was to assess elementary student's ability of measuring length, area, and volume and reading metric scales. The findings of this study were as follows. All students were successful in measuring without scale, regardless of grades. But they were less successful in measuring the task using standard and nonstandard scales. Especially, in measuring area, lower grade students were not able to perform the task using nonstandard instruments, but higher grade students were able to perform the task. Measuring area using grade paper was least successful for sixth graders. In measuring volume, students under fifth grade read the upper scale when using graduated cylinder. In measuring by direct comparison, students were more successful in measuring length than in measuring area and volume using given material. The use of given nonstandard material was successful for 4th, 5th, and 6th grade students. In measuring using metric scale, lower grade students did not pay attention to the zero of the scale, but just read the end point. Higher grade students considered both zero and end points.

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A Study on the Units of Measuring Scale in Hwangnyongsa Temple Planning (황룡사 가람계획 척도 연구)

  • Kim, Sookyung
    • Journal of architectural history
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    • v.25 no.4
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    • pp.65-73
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    • 2016
  • This paper aimed to identify the units of measuring scale in Hwangnyongsa temple planning with the published excavation survey reports. Hwangyongsa temple site was planned under Silla Capital's urban planning in 6~7C, its full size was $800{\times}800$, and main temple was $400{\times}515$ of Goguryeo's system of measurement. Main hall was located in the center of Hwangnyongsa temple site, and its location could be seen that there was the arrangement of main temple divided into 3 : 2. Building plan measuring units proved to be 351~356mm and 294~ 296mm by analyzing measured data of remains. Lecture hall and Wooden pagoda were rebuilt by using the ancestors' units of measuring scale again and Bell hall was not planned by Tang's system of measurement in middle of 8C. In this respect, it would be important to have a deliberate attitude and lay down stereotypes on research of the units of measuring scale in ancient architecture.

Development of a measuring device for scale accuracy of measuring tapes (줄자눈금정밀도 측정장치 개발에 관한 연구)

  • 이종원;김희식;유형석
    • 제어로봇시스템학회:학술대회논문집
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    • 1988.10a
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    • pp.380-384
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    • 1988
  • An optical device, named "T-MES", to measure the accuracy of printed scale of measuring tapes was developed. It has 11 optical sensors, that are exactly positioned every 100 mm on the 1 m frame. The sensors detect the beginning of the printed part and generate the puleses. The time difference between each signal pulse and the first sensor signal pulse is proportional to the error of printed scale. The measured data are trasmitted through a IEEE-488 interface to a IBM-AT computer and analyzed. The analysis software continuously displays the measured result on the CRT.n the CRT.

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Development of Scale on Soundness of Family Life in Korea (한국가정의 건전도 측정을 위한 척도의 개발)

  • 이영호
    • Journal of Families and Better Life
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    • v.16 no.4
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    • pp.233-250
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    • 1998
  • This study describes the development of the scale for measuring soundness of family life in Korea. The scale developed by this study was composed of 52questions in 7categories selected from 110sentences,. Advertges by using this scale hereafter are as follows : This scale make itself useful as a guidline for managing family life in view of prospect to carry out the specifical and practical management behavior as a test materials for designing and bringing up the family life and finally first of all useful of describing and measuring the conditions and soundness of family life in view of Korean

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Ne-Ne 레이저의 간섭을 이용한 고정밀 리니어 스케일의 제작에 관한 연구

  • 전병욱;박두원;이명호;한응교
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1991.04a
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    • pp.176-194
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    • 1991
  • A study on the Manufactiring of High-Precision Linear Scale by the Use of He-Ne Laser Interference Of late, along with the advancement of procision machining technology, the reauirement of super-precision measurement increases as time goes on, and the precision and accuracy of standard scale which is a basis of procision measurement has been cognized as a oriterion of industrial development in a nation. Up to now, mechanical and chemical methods have been widely employed to carve scale lines on linear scale, and it is impossible for the linear scale manufactured by means of those methods to guarantee the measurement with sub-micron level owing to errors attended with various problems. And the measuring length also bears errors subjected to the influence of surroundings condition, and shows inefficient circumstances in measurement on the ground of the complexity of measuring procedure as well as massive measuring apparatus. Hence in this paper, we described on technology by which we can carve scale lines thru optical method under the condition of laboratory by using rhcoherence of He-Ne two-mode stabilized laser and in turn, put it to practical use as linear scale for the measurment of lengrh. In this researchin the case of setting scale interval to 20 .mu. m, we employed super-precision scale-carving device associated by Ar larser and acoustic optical modulator in lieu of flsahing lamp scale-carving device, and we consequently obtained superior linear scales carved with precision and accuracy of .+-. 0.3 .mu. m.

Development of Optical Probe to Inspect Micron Scale Part in Micro-Factory (Micro-Factory 공정간 마이크로 부품 검사 프로브 개발)

  • Kim Geehong;Lee D.W.
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2005.05a
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    • pp.424-428
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    • 2005
  • This paper shows a non-contact optical method to inspect micron scale parts which will be manufactured in micro-factory system. This inspection system should have some characteristics like a small size, flexibility, and high measuring speed. In the viewpoint of measuring capabilities, it also has resolution under micron scale with measuring range over millimeter scale. Two methods will be presented in this paper, one is Moire and the other is white-light scanning interferometry. Also some experimental results will be presented to show the possibilities of the proposed inspection system.

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A Study on the Master Plan of the Temple Site of Baekje Period (백제 사찰 조영계획 고찰)

  • Tahk, Kyung-Baek
    • Journal of architectural history
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    • v.20 no.4
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    • pp.7-28
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    • 2011
  • This study intends to investigate the measuring scales, locations and scales through arrangement plans for a research on construction plans. Through an analysis of the artifacts-measuring scales, the relation of two scales found, which further helped suppose the measuring scales applied during the foundation period. Southern dynasties-scale was still used even after the capital was transferred to Sabi till Tang-scale was introduced. Tang-scale was used for Buddhist temples mostly founded in the 7th century. On the other hand, Goguryo-scale seemed to be used almost at the same period as Southern dynasties-scale used, but it seemed that Goguryo-scale disappeared earlier than Southern dynasties-scale. The locations of Buddhist temples could be classified into mountains, flatlands and mountain valley. Buddhist temples founded in mountains were mostly small-sized, but ones located on flatlands could secure flat fields through mounding operations. In addition, through location conditions of Neungsa and Wangheungsa, it was possible to find out the district setting of Sabi Capital Castle. Finally, the expansion range of Buddhist temples were found to be towards the east and the west. As for the scales of temples according to such conditions of location, it was found a similarity in Temple sites. In general, it was possible to assume that the scales of Buddhist temples tended to be expanded along with spatial expansion and there were regular systems in Buddhist temples related to the Royal family. Through the analysis of arrangement plans between individual buildings, it was found that the basic arrangement of Gate-Pagoda-Main Hall-Lecture Hall was preserved, but the proportion of distances between individual buildings varied depending on cases. As a result, there were differences between scales of entire building sites, construction subjective influences and master plan for each location of a Buddhist temple.

Developement of Measuring Units of Space Motion Accuracy in Machining Center (Machining Center의 공간정도 측정장치의 개발)

  • Kim, Young Seuk;Namgung, Suk
    • Journal of the Korean Society for Precision Engineering
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    • v.12 no.2
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    • pp.37-47
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    • 1995
  • In recent years, it has been variously developed for testing the accuracy of circular motion of NC machine tools, for example Telescoping Ball Bar Method by Bryan, Circular test Method by Knapp and $r^{-{\theta} }$ Method by Tsutsumi etc., but these methods are all 2-dimentional measuring methods on plane. These simple methods of circular motion accuracy test of NC machine tools have been studied by many reserchers as above, but it is not yet settled in the code of measuring methods of motion errors of NC machine tools, because of errors of measuring units and sensors, and also especially the difficulties of centering of measuring units and the spindle of machining center. In this paper, in use of 2 rotary encoders and 1 magnetic type linear scale with resolution of 0.5 .mu. m, it has become possible for measuring of 3 dimentional space motion accuracy.

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The Effect of Rhythmic Activity Program on IADL, Depression and Sleep of the Elderly (율동적 동작프로그램이 노인의 일상생활 수행능력, 우울 및 수면에 미치는 효과)

  • Lee, Kang-Yi
    • The Journal of Korean Academic Society of Nursing Education
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    • v.12 no.1
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    • pp.28-35
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    • 2006
  • Purpose: This study was performed to verify the effect of rhythmic activity program on the elderly particularly their level of instrumental activities of daily living(IADL), depression and sleep. Method: The design of this study is one-group pretest-post test design. Three self-reported questionnaires were used as follows: first, the IADL Scale developed by Lawton and Brody(1969) and revised by Suh(1996) for measuring IADL, second, the Geriatric Depression Scale developed by Sheikh and Yesavage(1986) and revised by Song(1991) for measuring depression, third, Korean Sleep Scale developed by Oh, Song, & Kim(1998) for measuring sleep aspects; fourth, the applied version of Facial Pain Scale developed by Wong & Baker(1988) and revised by Song(2004) for measuring sleep quality. Twenty-seven elderlies carried out 50 minutes of rhythmic activity program for 4 weeks. Before and after the experiment, they were tested for IADL, depression and sleep. Collected data were processed using the SPSS/WIN 12.0 program analyzed by the frequency, percentage, mean and paired t-test. Results: The improvement in IADL of the elderly was not enhanced significantly but depression and sleep disorders significantly decreased. Conclusion: Rhythmic activity program is an effective nursing intervention for the elderly.

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