• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.234-235
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• 2019

In the stacking and pitching items of the stone masonry and demolition process presented by 2018's standard of estimate, 7 estimating standards are presented according to the depth of masonry stone, and it is presented that the quantity per unit increases as the depth of masonry stone grows. As a result of analyzing the application status in the site, it is shown that 2 or 3 stones are mainly used according to the stone sizes regardless of the depth of masonry stone, and that as the size of the stone becomes larger, the quantity per unit decreases due to the size per square meter(㎡). Also, in most of sites, machine construction is mainly carried out by excavators with clampers attached to them. Therefore, in the 2019's application standard of estimate, it is analyzed that the size is simplified down to 3 sizes reflecting the site application status and that it is revised as a standard reflecting the result that as the stone size becomes bigger, the productivity increases.

• 교통기술과정책
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• 제9권4호
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• pp.77-82
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• 2012

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2002년도 춘계공동학술대회
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• pp.616-623
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• 2002

This paper proposes a new DFA methodology that ran estimate the standard assembly time and evaluate the assemblability of parts for small-sized product. We deride some determining and influencing factors related with assembly process and measure the assembly time using notion analysis to estimate of assemblability. We deduce quantitative store of assemblability through analysis of a correlation between determining factors and grade of influencing factors.

• 한국정밀공학회지
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• 제20권3호
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• pp.58-65
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• 2003

Vehicle acceleration data from an accelerometer and wheel speed data from standard, 50-tooth antilock braking system wheel speed sensors are used to estimate the absolute longitudinal speed of a vehicle. We develop the four velocity estimation algorithms. And we compare experimental results with the Butterworth filtered speed from the fifth wheel and find that it is possible to estimate absolute longitudinal vehicle speed during a hard braking maneuver lasting three seconds.

• 한국지반공학회논문집
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• 제27권3호
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• pp.27-40
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• 2011

본 연구에서는 점토지반에 근입된 송전철탑 연결형 기초를 대상으로 모형수평재하시험을 수행하고, 연결형 기초의 파괴기준을 제안하였다. 본 연구를 위해 전라북도 익산에 위치한 점토지반에서 연결형 기초의 모형수평재하시험을 수행하였으며, 연결형 기초의 하중-변위특성을 분석하였다. 본 실험을 위해, 강성의 변화를 고려할 수 있는 연결형 기초 모형체를 제작하였으며, 요소 및 기초전반의 거동을 파악하기 위하여 다양한 계측장치를 설치하여 실험을 수행하였다. 실험결과를 토대로, 연결형 기초의 지지력을 측정하고 비교 분석하였으며, 수평지지력 결정을 위한 파괴기준을 제안하였다.

• 품질경영학회지
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• 제25권1호
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• pp.182-192
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• 1997

The well-known standard normal distribution has been used within the limit of standard variable value of u=3.59. However, the probability values above the limit are not given in the literature. In this study, a probability computation program for standard normal distribution to u=5.99 with the proportional normal distribution a, pp.oximation suggested by Abramowitz and Stegun, Hastings is developed. The new standard normal distribution table developed by the program is presented and will be of help to estimate of probability values for testing and estimation of process mean value, lot acceptable probability, defective percentage of PPM unit of an out-of specification limit, process capability, test power of control charts, probability and statistics.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 춘계 학술논문 발표대회 학계
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• pp.171-174
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• 2009

The standard estimation system, used to estimate the predetermined cost of construction work, is measured by the standard and typical construction methods and field conditions. And the standard estimation system is applied to basic data for the measuring of construction cost, such as the consumed quantity of material, labor hours, and machinery cost. However it does not reflect sufficiently for the diversity and reality of constructions work Therefore, this study is recognized the necessity of new cost estimation models for the rational construction cost estimation. To improve estimation technique and construction ability, it was analyzed labor hours, production volume based on the work crew in construction work.

• 디지털산업정보학회논문지
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• 제8권4호
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• pp.13-18
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• 2012

In this paper, we propose a noise estimation method for noise reduction. It is based on block and pixel-based noise estimation. We assume that an input image is contaminated by the additive white Gaussian noise. Thus, we use an adaptive Gaussian filter and estimate the amount of noise. It computes the standard deviation of each block and estimation is performed on pixel-based operation. The proposed algorithm divides an input image into blocks. This method calculates the standard deviation of each block and finds the minimum standard deviation block. The block in flat region shows well noise and filtering effects. Blocks which have similar standard deviation are selected as test blocks. These pixels are filtered by adaptive Gaussian filtering. Then, the amount of noise is calculated by the standard deviation of the differences between noisy and filtered blocks. Experimental results show that our proposed estimation method has better results than those by existing estimation methods.

• 복식문화연구
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• 제13권1호
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• pp.47-59
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• 2005

This study aims to measure stretch rate of standard weight in the $2{\times}1$ rib stitch and $2{\times}2$ rib stitch, and to apply features of rib stitch to the knit pattern. The reviewer examined the sample knit for test with 100% wool, $2/48's{\times}2$, 12 gauge, and then made knit patterns and sample clothes for test considering stretch rate of standard weight of 10gf, 15gf, 20gf, 25gf based on the results from the former test, and finally estimated the try-outs for sample clothes. This study came out with the following results: From the functional estimate of knit patterns made by standard stretch rate of each stitch, the 20gf weight sample clothes of $2{\times}1$ and $2{\times}2$ rib stitchs were in high estimate. For the bust, B/4~ -4.6cm knit pattern was made of $2{\times}1$ rib stitch, B/4~5.3cm of $2{\times}2$ rib stitch. In conclusion, because $2{\times}1$ and $2{\times}2$ rib stitchs has the much higher stretch rate in the direction of the course than $0{\times}0$ ad $1{\times}1$ rib stitchs, high stretch rate of standard weight should be applied to the case of making knit wear. It is expected that this will lead stable sizing and measurement system when used in making knit patterns, and satisfy knit wearers' various needs.

• 노동경제논집
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• 제32권3호
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• pp.1-26
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• 2009

본고는 한국노동패널조사 1~10차년도 자료를 이용하여 정규직과 비정규직의 임금격차를 분석한다. 근로자 개인의 관찰되지 않은 이질성을 통제한 고정효과모형(fixed effect model)의 추정 결과에 의하면 정규직과 비정규직의 임금격차는 단순 횡단면 분석에서 나타난 임금격차의 약 50% 수준이다. 노동조합이 임금격차를 축소하거나 비정규직의 임금수준을 향상시킨다는 실증적 증거는 발견되지 않으며, 기업규모는 고용형태보다 임금수준에 더 큰 영향을 미치는 것으로 나타난다.