• 선박안전
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• 통권22호
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• pp.54-64
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• 2007

This study is about the size and the number of toilets in the passenger ships. National regulations and other countries regulations were searched and analyzed. The toilets in the passenger ship, that are engaged in Busan City, Inchen City and Mokpo City were also searched and these present situation of the toilets were used with basic data of this study. Finally, we give a suggestion on the size and the number of toilets in the passenger ship.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1995년도 추계학술대회논문집
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• pp.268-279
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• 1995

The purpose of this study is to suggest a brassiere sizing chart for elderly women. It is found that there is no direct linear relationship between cup size and under bust girth from the analsis of breast measurements. These 2 factors(under bust girth and cup size) were chosen as 2 axes of brassiere size chart. A loss function was used to determined intervals of bust girth and cup size of size chart, because the loss function introduces the concept of frequency to size chart for better customer's satisfaction. From the dual distribution table whose intervals had been determinde by a loss function. The 15 sizes, which had more than 2% of appearance were suggested for brassiere size chart. The suggested brassierc sizes covened 87.6% of all subjects. Considering that KS brassiere size thart consisting of 32 sizes covers 88.5%, the suggested brassiere size chart would be considered quite feasible. Also is suggested supply reference measurement chart relevant to brassiere manufacturing for 10 most frequent sizes.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 추계종합학술대회
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• pp.548-551
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• 2003

JSize 는 유닉스 운영체제의 size 프로그램에 대응하는 자바 등가 프로그램이다. 유닉스 size 프로그램은 실행 파일을 분석하여 그 파일이 메모리에 적재되었을 때 얼마 정도의 코드와 데이터 영역을 차지할지를 예측하게 한다. 마찬가지로 JSize 는 자바 클래스 파일을 분석하여 그 파일이 메모리에 적재되었을 때 얼마 정도의 클래스 영역 메모리를 차지할지를 예측하게 하는 기능을 갖는다. 본 논문은 클래스 파일을 분석하여 얻은 정보로부터 클래스 영역의 크기를 예측할 수 있게 하는 원리에 대해 소개한다. 아울러 실험을 통해 JSize 의 예측 정확성을 실제로 알아보았다.

• 한국정보처리학회논문지
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• 제4권9호
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• pp.2366-2377
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• 1997

본 논문은 ATM망의 트래픽 제어에서 예방적 기법인 가변 토큰풀(Variable Token Pool : VTP)을 이용한 적응적 사용 파라메터 제어에 관한 메카니즘을 제안한다. 가변 토큰풀 메카니즘은 ON-OFF형 트래픽의 버스트 기간과 침묵 기간을 장기간 감시하여 토큰풀을 가변시킴으로서 최대 비트율 뿐만 아니라 평균 비트율과 버스트 기간 위반을 함께 감시할 수 있다. 또한 제안된 메카니즘은 버스트 기간과 평균 비트율 위반에 대한 민감성을 개선할 수 있고, 위반 사항에 대한 반응이 빨리 나타난다. VTP 크기는 버스트와 침묵 구간마다 계단 형태로 변하고, 하향 간격 (Down_size)과 상향 간격 (Up_size)의 값에 따라 제어된다. 본 논문에서 제안한 메카니즘을 시뮬레이션을 통해 LB와 JW 메카니즘과의 성능을 비교 분석하였다. VTP메카니즘은 기존에 제안된 메카니즘보다 좀더 엄격한 제어 능력을 보였다. VTP 메카니즘의 셀 손실율은 VTP의 파라메터 (Down_size, Up_size)값의 증감에 따라 다르게 나타났으며, 두 파라메터 값이 트래픽 상황에 따라 적당한 값으로 결정되어야 함을 보여주었다.

• 대한인간공학회지
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• 제5권1호
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• pp.19-28
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• 1986

To study the body trunk form which is essential to clothing constructions, necessary body sizes were measured indirect1y from 216 unmarried women from 19 to 24 years old by a photographic network method. The results are obtained as follow; 1) In this study of body type measurements, the four factors of bust, abdomen, column and hip size have been divided into four-stage intervals and given the body type codes 1, 2, 3 and 4, with 1 designating the size difference of the factor with the minimum size difference of the factor with the maximum size difference from waist size. These body type codes can be easily, linguistically interpreted. In this study, among $4^4=256$ possible body types, 54 types appeared frequently. These 54 types are integrated into 6 groups of types by clustering analysis. Representative types of each group are types 3333 and 2333 in group 1, 2233, 1233 and 1332 in group 2, 2222, 1222 and 1223 in group 3, 2223 in group 4, 2323 and 2322 in group 5, and 3323, 3223 and 3322 in group 6. In the types of groups 1, 2, and 3, the change is mainly in bust size, and in the types of group 4. is single type. In the types of group 5 the change is mainly in hip size, and in the types by groups 6 the change is mainly in abdomen size and hip size. 2) The analysis by measuring the four elements of body trunk in reference to waist size is scientific and grading of similar styles is possible in clothing construction. 3) Assuming that the human body is oval, using the calculating method, the size of girth, which cannot be measured by the indirect measuring method, is obtained approximate to actual size, with an error of ${\pm}2.8cm$.

• 산업경영시스템학회지
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• 제42권1호
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• pp.55-63
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• 2019

This paper develops an algorithm to determine the batch size of the batch process in real time for improving production and efficient control of production system with multiple processes and batch processes. It is so important to find the batch size of the batch process, because the variability arising from the batch process in the production system affects the capacity of the production. Specifically, batch size could change system efficiency such as throughput, WIP (Work In Process) in production system, batch formation time and so on. In order to improve the system variability and productivity, real time batch size determined by considering the preparation time and batch formation time according to the number of operation of the batch process. The purpose of the study is to control the WIP by applying CONWIP production system method in the production line and implements an algorithm for a real time batch size decision in a batch process that requires long work preparation time and affects system efficiency. In order to verify the efficiency of the developed algorithm that determine the batch size in a real time, an existed production system with fixed the batch size will be implemented first and determines that batch size in real time considering WIP in queue and average lead time in the current system. To comparing the efficiency of a system with a fixed batch size and a system that determines a batch size in real time, the results are analyzed using three evaluation indexes of lead time, throughput, and average WIP of the queue.

• 한국음향학회지
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• 제28권8호
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• pp.815-821
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• 2009

소음이 존재하고, 신호의 전달 시스템이 가변적인 환경에서 신호처리는 일반적으로 적응 알고리즘에 의해 이뤄진다. 다양한 적응 알고리즘들 중에서 LMS 알고리즘은 연산량이 적고, 구현이 쉬우며, 성능이 훌륭해 가장 널리 쓰이는 알고리즘이 되었다. LMS 알고리즘의 성능에 영향을 미치는 가장 중요한 요소 중 하나가 Step Size이다. 일반적으로, Step Size가 크면, 알고리즘 수렴 속도는 빨라지지만, 수렴 오차는 커지게 되고, Step Size가 작으면 수렴 오차는 작아지지만, 수렴 속도는 느려진다. Step Size의 이러한 특성을 상호 보완하고자 많은 방법들이 제안되어 오고 있다. 본 논문에서는 오차 제곱 변화 곡선의 기울기로부터 현재 상태에 대한 카테고리를 분류하여, Step Size를 매 단계마다 적절하게 가변시킴으로써, 결과적으로 수렴 속도와 정확도, 연산량을 향상시킨 새로운 개념의 Categorized 가변 스텝 사이즈 LMS 알고리즘을 제시하고, 그 성능은 실험을 통하여 수렴 속도와 Excessive Mean Square Error (EMSE), 연산량의 관점에서 향상되었음을 검증하였다.

• KCI Concrete Journal
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• 제14권1호
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• pp.43-50
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• 2002

In this study, size effect tests were conducted on axial compressive strength of concrete members. An experiment of Mode I failure, which is one of two representative compressive failure modes, was carried out by using dimensionally proportional cylindrical specimens (CS). An adequate notch length was taken from the experimental results obtained from the compressive strength experiment of various initial notch lengths. Utilizing the notch length, specimen sizes were then varied. In addition, new parameters for the modified size effect law (MSEL) were suggested using Levenberg-Marquardt's least square method (LSM). The test results show that size effect was apparent for axial compressive strength of cracked specimens. Namely, the effect of initial notch length on axial compressive strength size effect was apparent.

• 기술혁신학회지
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• 제2권2호
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• pp.169-186
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• 1999

This study empirically investigates innovative behaviors of the firm. In so doing, a Probit was employed and estimated. We used the raw data of the "corporate innovation survey"(CIS), which, in consent with OECD efforts, is regularly undertaken by the Science and Technology Policy Institute(SIEPI). The data set includes more than 3400 firms in the manufacturing sector. Three types of innovation, i.e., new product, product improvement and process innovation, are studied, assuming that determinants of innovation are firm′s age. number of employees as the size of firm, ratio of foreign ownership and innovation costs. To investigate the relationship between firm′s innovation behavior and the size, we estimate the Probit including the quadratic term of the firm size. Empirical findings showed that the sign of the quadratic term of the firm size turned out to be negative. It means that the probability of firm's making innovation shows the inversed-U relationship with the firm size. Such an empirical result may have a significant implication for the industrial policy.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 봄 학술발표회 논문집(I)
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• pp.321-326
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• 1998

Shear failure of reinforced concrete beams is serious problem due to sudden brittle failure and many experimental results proved that size effect in shear behavior is an important feature of reinforced concrete members. For this reason, the structural safety of the reinforced concrete beams for shear has been checked by applying empirical design formula, which includes the size-effect, derived from experimental data. However, as the sizes of reinforced concrete members become extremely large, experiments sometimes become very difficult so that the formula or the experimental data could not be obtained and size-effect analyses of shear behavior become significant. In this study, size-effect analysis of shear behavior in reinforced concrete beams is performed by modeling tension stiffening/shear stiffening on reinforced concrete and the tension softening/shear softening on plain concrete. Then, the influences of models in the size-effect analyses of shear behavior in reinforced concrete beams are analyzed.