• Journal of the Ergonomics Society of Korea
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• v.33 no.5
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• pp.337-354
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• 2014

Objective: The purpose of this study was to examine the various sizing systems and specified anthropometric data as well as the fit issues used today. Background: A standard sizing system for clothes is a system that is developed based on body shape and size classifications method. To develop an efficient sizing system, we have to classify the database from the majority of the samples. Method: The method of this paper deals with the secular trend of height spanning from 1997 to 2010 along with the morphological feature patterns for Koreans. It also investigates the comparison of the growth pattern between male and female and the body shape classification according to the drop values based on the anthropometric data samples of KATS taken from the 2010 surveys in order to develop and define the new guidelines for the size designation systems of clothes. Results: The results are classified with body size and shape categories according to the drop values by age and sex in order to develop the new guidelines for the size designation systems based on these body dimensions from the analyzed anthropometric database. Conclusion: These new guidelines for the size designation system will eliminate the confusion that currently exists among countries and individual apparel designers. Application: The adopted standards could be used to compare the sizing systems worldwide.

• Journal of the Korea Institute of Military Science and Technology
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• v.20 no.6
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• pp.844-852
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• 2017

Since guided weapon is high-cost and one-shot device which is non-reusable, it requires a lot of resources to prove required accuracy as a part of reliability demonstration. Once a test for proving accuracy rate of guided missile fails, it causes an additional cost and delay of schedule. This study introduces an equation for proper sample size and plan for guided-missile accuracy rate test in order to minimize the risk of test failure. Proper sample size for the test is derived by considering the reliability growth. Furthermore, each task for accuracy rate test is defined according to the development step. Therefore, this study can contribute to reduce sample size for accuracy rate test in order to meet the reliability requirement and assure transparency in the test process.

• Journal of the Korean Institute of Intelligent Systems
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• v.4 no.2
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• pp.3-8
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• 1994

In this paper, the hypergraph is fuzzified. In a hypoergraph, there are 3types of sets which can be fuzzified. According to the fuzzificatioin level, 7 types of fuzzy hypergraphs can be obtained. After defining the 7 thpes of hypergraphs, some interesting concepts are developed such as the order, size and degree of such as the order, size and degree of the fuzzy hypergraph.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2002.11a
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• pp.51-54
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• 2002

This study is intended to investigate an influence of the kinds and the maximum size of aggregate on the compressive strength of small size core specimen. According to the results, the compressive strength of standard specimen is large in order of basalt, granite and limestone aggregate, and shows increasing tendency as the maximum size of aggregate grows large. The compressive strength of concrete using basalt aggregate shows similar tendency to granite aggregate, and that of concrete using limestone aggregate decreases slightly, compared with granite aggregate. The reducing ratio of the compressive strength of 25mm core specimen is least when the maximum size of aggregate is 10mm. But the compressive strength of 50 and 100mm core specimen is almost not influenced by the maximum size of aggregate.

• Electrical & Electronic Materials
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• v.8 no.2
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• pp.204-210
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• 1995

The characteristics of the internal circuits and the load capacitance should be included to optimize the size of BiCMOS buffer. In order to get the optimum size and delay time of the BiCMOS buffer, new size plane is suggested. By using the size plane, the optimum characteristics of CMOS buffer according to the number of stages can be obtained. From this method, delaytime, .tau.$_{D}$, is obtained 2.39 nsec with $V_{\var}$=5V, $C_{L}$=5pF, W=30.mu.m and $A_{e}$=135.mu. $m^{2}$.>..>...>.

• The Korean Journal of Applied Statistics
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• v.26 no.4
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• pp.595-610
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• 2013

Testing of order-restricted alternative hypothesis in $2{\times}k$ contingency tables can be applied to various fields of medicine, sociology, and business administration. Most testing methods have been developed based on a large sample theory. In the case of a small sample size or unbalanced sample size, the Type I error rate of the testing method (based on a large sample theory) is very different from the target point of 5%. In this paper, the exact testing method is introduced in regards to the testing of an order-restricted alternative hypothesis in categorical data (particularly if a small sample size or extreme unbalanced data). Power and exact p-value are calculated, respectively.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.17 no.4
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• pp.238-266
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• 2013

The Interaction Picture (IP) method is a valuable alternative to Split-step methods for solving certain types of partial differential equations such as the nonlinear Schr$\ddot{o}$dinger equation or the Gross-Pitaevskii equation. Although very similar to the Symmetric Split-step (SS) method in its inner computational structure, the IP method results from a change of unknown and therefore do not involve approximation such as the one resulting from the use of a splitting formula. In its standard form the IP method such as the SS method is used in conjunction with the classical 4th order Runge-Kutta (RK) scheme. However it appears to be relevant to look for RK scheme of higher order so as to improve the accuracy of the IP method. In this paper we investigate 5th order Embedded Runge-Kutta schemes suited to be used in conjunction with the IP method and designed to deliver a local error estimation for adaptive step size control.

• Journal of Korean Society of Rural Planning
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• v.23 no.3
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• pp.53-60
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• 2017

In order to export Korean spray roses to the China, it is needed to analyse chinese preferences, rose attributes, and purchase intentions. The purpose of this study is to present the implications on the production and distribution of roses for export by analyzing the quality preference attributes and purchase intention of Korean rose for Chinese flower experts. A survey on the preference and purchase intention of Korean flower roses by Chinese flower experts was conducted through face - to - face interviews with flower show participants in China. Approximately 100 Chinese flower experts who participated in the Flower Show in 2016 received the questionnaire, and 86 survey results could be used for analysis. Survey data were analyzed using ordered probit and bivariate probit models. As a result of an analysis, it was found that Chinese flower experts were more likely to buy Korean roses than Chinese roses even if they consider flower color, leaf shape and size and color diversity. The probability of purchasing more than twice the price was higher than that of the color diversity considering the flower shape, leaf shape and size, but the bivariate order probit model was larger than that of flowers, leaves and size, and the order of probability size was changed. In order to increase the export of Korean spray roses to the Chinese market, We need to increase Chinese experts' preferences and satisfaction. For this purpose, it is very important to develop export varieties of roses with large flower buds and shape / coloring, and to apply the useful post-harvest technology that can extend freshness and distribution period of export roses.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.9_10 s.157
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• pp.1378-1388
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• 2006

We conducted a questionnaire survey of 481 Korean female college students and measured anthropometrically 2 girth of their bodies(bust, under bust girth) in order to understand the psychological needs about brassiere and the physical characteristics of consumers aged between 19 and 25(the 1924 generation). There were two major problems to be solved to improve the fit of brassiere in aspect of size. First, most brands for this age group aimed at product differentiation mainly on visual design not on brassiere size. According to the body measurements, the distribution of brassiere size had 6 sections '70AA, 70A, 70B, 75AA, 75A and 75B cups' showing a rate of 63.8% but most brands for this age group were producing '75A, 80A, 85A, 75B, 80B and 85B cups' showing a rate of 24.7%. Second, most subjects of this survey didn't know their own breast size and the sizing system of brassiere which are necessary in order to select the proper brassiere size. And most subjects were wearing a bigger size brassiere than their own body size even though one was in the range of '75A, 80A, 85A, 75B, 80B and 85B'. It might be possible that the dimensions of brassiere products in the market and the sizes indicated on the labels do not correspond. For increasing the consumer satisfaction it is necessary to adjust the production rate of brassiere sizes and to develop ergonomic brassiere products with proper dimensions and shapes for each brassiere size.

• Journal of Korean Home Economics Education Association
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• v.13 no.2
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• pp.1-14
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• 2001

The purpose of this study was to find out and advocate the intake of vitamin A and C rich foods in Korean people. Forty kinds of vitamin A and C rich foods were selected by the vitamin quantity in 100g edible portion. in single serving size. and by the 1997 national food supply data. The results were summarized as follows. 1. The vitamin A rich foods 1) The food sources of vitamin A presented in the middle and high school home economics textbooks were liver. egg/egg yolk. milk/dairy products. and green and yellow vegetables. etc. 2) The vitamin A rich foods by 100g edible portion ere in order of red pepper(dried). laver(dried). carrot. meat edible viscera. eel. etc. And the vitamin A rich foods by the vitamin A content in single serving size were in order of carrot. eel. meat edible viscera. water shield. red pepper(dried). etc. 3) The vitamin A suppling foods according to the 1997 national food supply data were in order of red pepper(dried). meat edible viscera. laver. carrot. etc. The green and yellow vegetables. fish and shellfish. and seaweeds were the most important sources of vitamin A in Korean. 2. The vitamin C rich foods 1) The food sources of vitamin C presented in the textbooks of middle and high school were strawberry. citrus fruits. and vegetables such as spinach. chinese cabbage. radish. crown daisy. etc. 2) The vitamin C rich foods on the basis of the vitamin C content in 100g edible portion were in order of sweet pepper. goose berry. citron. strawberry. water shield. etc. And the vitamin C rich foods by the quantity in single serving size were in order of strawberry. goose berry. citron. sweet pepper. lemon. etc. 3) The vitamin C suppling foods according to the 1997 national food supply data were in order of chinese cabbage. radish. citrus fruits. strawberry. etc. Not only vegetables and fruits but also seaweeds like dried laver and sea mustard were the most important source of vitamin C in korean.