• 수산해양기술연구
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• 제33권3호
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• pp.189-193
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• 1997

We make an ultrasonic system as a trial to measure the distance between trawl doors, and carried out a water tank ($24{\times} 24$m, water depth 1 m) experiment for confirming the practical use of the system in October 1996. This system calculates the distance between the pinger (50 kHz) and the transponder (50 kHz/70 kHz) attached each one on the trawl door by measuring the time-difference of receiving with two channels receiver on the trawler. This paper assums that both the length of the warp from the stern to the trawl door is same. At results the system shows a good relation between the distance and the time-difference of receiving while the location of the pinger is moved in variously in the water tank, and it was found that the method of measuring techniques on the prototype system could be applied to the measurement of the trawl door opening in the field experiment.

• 설비공학논문집
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• 제24권4호
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• pp.330-335
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• 2012

A characteristic behavior of the thermal storage tank for varying thermal load in heat pump water heater was studied. The control method was suggested and applied. By measuring the temperature within the storage tank, the heat pump was ON/OFF controlled. The appropriate measuring position and the size of heat exchanger gives the minimized power consumption of heat pump. As the length of heat exchanger increases, the temperature measuring position goes down of the storage tank and the power consumption increases.

• 한국생활과학회지
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• 제8권3호
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• pp.551-563
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• 1999

In this study, university students were allowed to wear the slacks varying the thigh circumference(slim/straight type) and crotch length(long, middle, short crotch type). Tightness and uncomfortability for each slacks were measured to be expressed 5point-likert type. The results can be summarized as follows: 1. At the research for measuring uncomfortability, measures of slim types and straight types of thigh circumference, crotch length B and C, and the body movement such as sitting down on the chair, sitting down with their body curling like a ball, and getting down on their knees were higher in slim types than in straight types. 2. Only crotch length C had different measures between these two types in tightness. 3. In uncomfortability, each of them had different measures among three kinds of crotch length and two types of thigh circumference had different measures among three kinds of crotch length. Four kinds of movement had different measures among three kinds of crotch length in uncomfortability. While uncomfortability of crotch length B was the highest one, that of crotch length A was the lowest one. 4. In tightness, each of them had different measures among three kinds of crotch length. While tightness of crotch length C was the highest one, that of crotch length A was the lowest one. Four kinds of movement had different measures among three kinds of crotch length in tightness.

• 패션비즈니스
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• 제8권4호
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• pp.22-32
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• 2004

The purpose of this research is to know the pattern of Hanbok Jegory with measuring Jegory and studying manufacturing method of the Jegory used currently. It is a purpose to find constitutional problem caused by the character of the bending somatotype and, to study the standard model of the Jegory for bending somatotyped women in old age, by comparison of this fitness for bending-somatotyped women in old age. The results obtained are as follows; 1. The kinds of measurements considered in manufacturing process are Hwajang Length, Bust girth, and the skirt length. The length of Jegory and width of Neck are also considered. 2. Manufacturers consider somatotype the most important thing when they make Jegory for women in old age. Front length, Back length and Width of the Jegory are considered secondly important. 3. The results of the comparison show that the Standard Hanbok drafting method is not suitable for drafting Jegory for bending somatotyped women in old age. 4. The suitability test for the model designed by the above methods shows that it fits in bending somatotyped women in old age better than standard drafting method. The results show the superiority of the above methods especially in the breast width, the Godae length, and the adaptedness to the body.

• 대한물리의학회지
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• 제12권1호
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• pp.43-49
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• 2017

PURPOSE: This study investigated the relationship among hip adduction angle, tibial rotation, and ITB length during an Ober test to determine the most appropriate position for performing the test. METHODS: The study included thirty-nine asymptomatic participants (23 males, 16 females). Their hip adduction angles were measured using the Ober test during three tibial rotation conditions (internal tibial rotation, external rotation, and neutral position). ITB length was calculated by measuring the position of the patella to lateral femoral condyle using ultrasonography (patella-condyle distance; PCD). RESULTS: The relationship among hip adduction angle, tibial rotation, and ITB length was analyzed under the three conditions using the Pearson correlation. The hip adduction angle of the internal tibial rotation, the external rotation, and the neutral position were significantly related to ITB length. Moreover, the hip adduction angle measured during the internal tibial rotation had the highest correlation with ITB length among the three conditions (r=.58, p<.001). CONCLUSION: Internal tibial rotation caused by the Ober test led to increased iliotibial band (ITB) tension and a decreased adduction angle. These findings support that tibial rotation influences the flexibility of ITB. Therefore, therapists should consider the position of the internal tibial rotation when taking measurements using an Ober test.

• 한국지반신소재학회논문집
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• 제6권2호
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• pp.21-26
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• 2007

지오그리드의 인장강도 특성은 시험온도, 시료길이, 변위측정방법, 인장속도 및 시험장치 등에 영향을 받는다. 지오그리드의 인장강도시험법은 ASTM 06637 및 ISO 10319에 규정되어 있다. 그러나 이 두 시험법은 인장속도 및 시료길이에서 다소간의 차이를 가진다. 본 연구에서는 국내에서 많이 사용되고 있는 세 가지 종류의 지오그리드를 대상으로 일련의 광폭인장강도시험을 수행하여 시료길이 및 인장속도가 지오그리드의 광폭인장강도에 미치는 영향을 평가하였다.

• 한국ITS학회:학술대회논문집
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• 한국ITS학회 2003년도 제2회 정기총회 및 추계학술대회
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• pp.110-115
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• 2003

• Structural Engineering and Mechanics
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• 제33권2호
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• pp.257-260
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• 2009

• 대한수학교육학회지:수학교육학연구
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• 제19권2호
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• pp.321-340
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• 2009

본 논문은 초등학교 저학년 학생들의 길이 추론 능력을 살펴보고자, 측정 상황의 4가지 문제유형(단위 길이 비교하기, 단위의 수세기, 단위 길이 예상하기, 길이 비교하기)으로 구성된 검사지를 이용하여 375명(2학년 185명, 3학년 190명) 학생들의 반응을 분석하였다. 연구결과 학생들은 '단위 길이 비교하기'와 '단위의 수세기' 유형에서는 높은 정답률을 보인 반면에, '단위 길이 예상하기'와 '길이 비교하기' 유형에서는 상대적으로 낮은 정답률을 보였다. 또한 정답 및 오답 유형별로 대표적인 학생들의 반응과 추론을 관련지어 면밀하게 분석한 결과, 문제 유형에 따라 학생들에게 예상되는 추론의 수준이 있음이 드러났다. 본 연구 결과는 학생들이 길이를 비교하거나 측정할 때 어떻게 추론하는지에 대한 경험적 근거를 제공한다.

• Restorative Dentistry and Endodontics
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• 제29권6호
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• pp.541-547
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• 2004

The aim of this study was to compare the initial apical file (IAF) length between the mesio-buccanl and mesio-lingual canals of the mandibular molar before and after early coronal flaring. Fifty mandibular molars with complete apical formation and patent foramens were selected. After establishing the initial working length of the buccal and lingual canal of the mesial root using the Root-ZX, radiographs were taken for the working length with a 0.5 mm short of #15 K-file tip just visible at the foramen under a surgical microscope (OPMI 1-FC, Carl Zeiss Co. Germany) at 25X. After early coronal flaring using the $K^3$ file, additional radiographs were taken using the same procedure. The root canal morphology and the difference in working length between the buccal and lingual canals were evaluated. These results show that the difference in the length between the mesio-buccal and mesio-lingual canals of the mandibular molar was $\leq$ 0.5 mm. If one canal has a correct working length for the mesial root of the mandibular molar, it can be used effectively for measuring the working length of another canal when the files are superimposed or loosening. In addition, the measured the working length after early coronal flaring is much more reasonable because the difference in the length between the mesio-buccal and mesio-lingual canals can be reduced.