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Chemical Effects of Nuclear Transformations in Metal Salts (金屬鹽의 原子核變換의 化學的 效果)

  • Byung Hun Lee;Jong Du Lee
    • Journal of the Korean Chemical Society
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    • v.19 no.5
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    • pp.331-338
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    • 1975
  • The distribution of $^{51}Cr\;and\;^{128}I$ recoil species following radiative-neutron capture in chromates, dichromates, iodates and periodates has been investigated by using paper-electrophoresis. In view of the effective recoil energy and the effect of the internal conversion, it is unlikely that an atom which has captured a neutron can remain bound in its original molecule. It is also unlikely that the energy of the recoil atom is dissipated in heating a small region of the crystal. However, the results of paper-electrophoresis separation of recoil $^{51}Cr\;and\;^{128}I$ indicated that many more of the recoil atoms were bound in the parent molecule. The disorder model for the reaction was proposed from observations of retention. In considering cations, the greater their radii, the higher is the probability of the recoil atom breaking through the secondary cage. In ammonium salt, the ammonium ion behaved as a reducing agent in the disorder zone and resulted in low retention. Crystal structures with their greater free space have shown low retention.

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Seam Strength Depending on the Change of Cutting Direction of Fine Cotton Fabrics (세번수 면직물의 재단 방향 변화에 따른 봉합강도)

  • Uh, Mi-Kyung
    • Journal of the Korea Fashion and Costume Design Association
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    • v.15 no.3
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    • pp.33-40
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    • 2013
  • This paper focused on investigating the seam strength by cutting direction depending on the fabrics and weave by comparing the tensile strength and elongation of bias, warp and weft of 4 kinds of find cotton fabrics and combining 6 kinds of seam cutting directions. The cutting directions are selected the warp direction, weft direction and 45-degree bias direction. Then, three kinds of directions, the warp/warp direction, the weft/weft direction and the bias/bias directions, and the three different kinds of directions, the warp/weft direction, the warp/bias direction and the weft/bias directions, were finally selected. The results are as follows: The tensile strength of all fabrics was higher in the order of warp, bias and weft direction and tensile elongation was higher in the order of bias, warp and weft direction in almost all fabrics. 100's and 150's cotton fabrics showed the highest seam strength when they were cut in the bias/bias direction. The seam strength of the fabrics cut in the same direction was the highest in the fabrics cut in the bias/bias direction. Four kinds of fabrics demonstrated the similar seam strength. However, for the seam strength of fabrics cut in the different directions, 100's cotton fabrics had the difference of seam strength by direction and weave, but 150's cotton fabrics didn't have any difference in seam strength by direction and weave. As described above, the seam strength was influenced by the cutting direction of fabrics. Accordingly, the seam strength can be improved by changing the cutting direction of seam when making the clothing.

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Image differences based on changes in hip circumference and crotch length in baggy pants - Focused on women in their 20s - (배기팬츠 엉덩이둘레 여유분과 밑위길이 여유분 변화에 따른 시각적 이미지 - 20대 여성을 중심으로 -)

  • Choi, Eunju;Suh, Mi-A;Uh, Mi-Kyung
    • The Research Journal of the Costume Culture
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    • v.20 no.6
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    • pp.912-922
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    • 2012
  • With a long crotch length and much ease in the hip area, baggy pants are visually expressed in a variety of designs when compared with regular pants. The purpose of this study is to define the image differences of various baggy pants designs according to hip circumference and crotch length ease. To that end, this study deduced the visual image variable of experimental baggy pants and analyzed visual images according to changes in hip circumference and crotch length. Nine baggy pants with different levels of hip circumference and crotch length ease were produced as experimental pants. The image of each pair of experimental baggy pants was evaluated based on pictures taken of the pants worn by a woman in her 20s with a standard body figure. The image assessment team was composed of 105 clothing majors. The research results are as follows. Four visual image factors of experimental baggy pants were extracted: whole body compensation, lower body compensation, hip compensation, and waist compensation. Among the 4 factors, the whole body compensation factor was shown as the most representative factor. The body compensation image was higher with less hip circumference ease in the experimental baggy pants, and more hip circumference ease created the optical illusion of a larger body figure, presenting a significant difference between waist circumference and hip circumference. The lower body compensation factor, hip compensation factor, and waist compensation factor all showed a significant influence on changes in hip circumference ease. This result shows that changes in hip circumference ease exerted more influence on the body compensation image than did changes in crotch length ease. The results of this study provide basic data for predicting visual images according to differences in the level of ease in baggy pants, helping people select clothing suitable to their preferences and body shapes.

A study on pattern development to improve the fitness of women's slim-fit tailored jackets - Focused on the somatotypes of Korean women in their 30s - (여성복 슬림 핏 테일러드 재킷의 맞음새 향상을 위한 패턴 개발 - 국내 30대 여성 체형을 중심으로 -)

  • Jeong, JaeChul;Park, SunKyung;Uh, MiKyung
    • The Research Journal of the Costume Culture
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    • v.23 no.4
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    • pp.569-580
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    • 2015
  • The recent fashion market failed to satisfy the needs of female customers in their 30s who are demanding a slim jacket that makes the wearer look young and slim. Accordingly, the slim-fit jackets of domestic brands targeting the women in their 30s were collected to conduct look and movement fitting evaluations based on the standard somatotype, and a slim-fit tailored jacket prototype was developed based on the present findings. This research aims to increase the satisfaction level of the slim-fit jacket customers reflecting a variety of somatotypes of women in their 30s. The research process was developing jacket patterns fully reflecting the properties in terms of extra space and design lines for different somatotypes of women in their 30s based on the jacket pattern formulated through the advanced research, and then suggesting pattern design methods for the different somatotypes. In this sense, this research attempted to identify the problems concerning the slim-fit tailored jacket fitting for different somatotypes of women in their 30s. The main aim was to suggest ways to improve the customers' satisfaction level regarding the fit, and enable the manufacturers to produce a well-fitting jacket reflecting the peculiarities of each somatotype.

Eggs Development and Early Life History of Pale Chub, Zacco platypus from Wicheon (위천에 서식하는 피라미(Zacco platypus)의 난 발생 및 초기생활사)

  • Park, Jae-Min;Han, Kyeong Ho
    • Korean Journal of Ichthyology
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    • v.29 no.3
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    • pp.190-196
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    • 2017
  • The egg and larval development of pale chub, Zacco platypus were determined by observation of laboratory reared larvae from hatching. The experimental adult fish were collected in Wicheon of Nakdong river in June 2016, The eggs and larvae were reared in the experimental tanks, and observed their morphological change. The egg diameter ranged from 1.68 to 1.78 mm ($mean{\pm}SD$, $1.73{\pm}0.07mm$, n =30). The eggs were hatch 70 hours after fertilization. The total length (TL) of the newly hatched larvae ranged from 5.39 to 5.42 mm ($5.40{\pm}0.02mm$, n=10). On the 8 days after hatching, 10 fin rays were formed in caudal fin at 7.89~7.93 mm TL ($7.91{\pm}0.02mm$, n=10). On the 44 days after hatching, the juveniles ranged from 16.1~16.5 mm TL ($16.3{\pm}0.28mm$, n=10).

A Hybrid of Rule based Method and Memory based Loaming for Korean Text Chunking (한국어 구 단위화를 위한 규칙 기반 방법과 기억 기반 학습의 결합)

  • 박성배;장병탁
    • Journal of KIISE:Software and Applications
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    • v.31 no.3
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    • pp.369-378
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    • 2004
  • In partially free word order languages like Korean and Japanese, the rule-based method is effective for text chunking, and shows the performance as high as machine learning methods even with a few rules due to the well-developed overt Postpositions and endings. However, it has no ability to handle the exceptions of the rules. Exception handling is an important work in natural language processing, and the exceptions can be efficiently processed in memory-based teaming. In this paper, we propose a hybrid of rule-based method and memory-based learning for Korean text chunking. The proposed method is primarily based on the rules, and then the chunks estimated by the rules are verified by memory-based classifier. An evaluation of the proposed method on Korean STEP 2000 corpus yields the improvement in F-score over the rules or various machine teaming methods alone. The final F-score is 94.19, while those of the rules and SVMs, the best machine learning method for this task, are just 91.87 and 92.54 respectively.

The Development of Convergence Teaching-Learning Program for the Clothing Section of Home Economic Focused on Up-cycling (업사이클링 주제의 가정과 의생활 영역 융합교육 프로그램 개발)

  • Yang, Hyun-Sook;Lee, Youn-Hee;Uh, Mi-Kyung
    • Journal of the Korea Fashion and Costume Design Association
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    • v.19 no.2
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    • pp.49-61
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    • 2017
  • The purpose of this study was to develop an educational program designed to allow students to experience 'up-cycling' first-hand during class and understand its significance by helping them improving their practical problem-solving abilities. Teachers of home economics, Korean, and social studies to third grade middle schooler were asked to analyze the curriculums of their subjects. The analysis results were then used to identify common elements among the units, reconstruct the curriculums, and develop an integrated lesson program to offer integrated activities. Based on these, a lesson program was developed to make an eco-bag and running shoes under the theme of 'up-cycling' in the unit of 'environmentally-friendly clothing and mending of clothes' in the home economics subject. The results were as follows: First, a topical fusion lesson program was developed to integrate three subjects together. The development process involved the integration of the topic of up-cycling, a program model for integrated lessons, and a teaching and learning process plan for topical integrated education. Secondly, a lesson program for home economics was developed that was applicable to actual home economics lessons based on the topical integrated lesson program. The lesson domains were divided into large, medium, and small to create a ten-lesson teaching and learning process plan needed for the lessons, teaching materials that could be put to actual uses in lessons, and activity and evaluation logs for learners.

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Spawning and Larval Development of the Jicon Scallop, Chlamys farreri (비단가리비, Chlamys farreri의 산란과 유생사육)

  • Park Ki-Yeol;Kim Su-Kyoung;Seo Hyung-Chul;Ma Chae-Woo
    • Journal of Aquaculture
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    • v.18 no.1
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    • pp.1-6
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    • 2005
  • This study focused on spawning season, induce spawning, spawning and larval development of the Jicon scallop in Daehuksan Island of southwestern waters in Korea. The condition index and gonadosomatic index were used to investigate the reproductive pattern of the Jicon scallop. The major spawning season was from July to August, showing an unimodal gametogenic cycle per year. Several different tests were carried out to induce spawning of the mature male and female C. farreri. For females, the injection of serotonin, temperature induction technique and the combination of the both treatments produced significantly faster gamete release. Unlike females, males spawned only in response to the UV rays irradiation stimulation. Mean size of fertilized eggs was 69.5 $\mu$m in diameter. After fertilization, the zygote could be divided into 2 cells as early as 2 hours. It took about 8 hours to develop the 8-cell stage, about 20 hours to hatch trochophore larvae, and about 40 hours to be D-shaped larvae.

A Study on the Construction of the Automatic Extracts and Summaries - On the Basis of Scientific Journal Articles - (자동 발췌문/요약 시스템 구축에 관한 연구 - 학술지 논문기사를 중심으로 -)

  • Lee Tae-Young
    • Journal of the Korean Society for Library and Information Science
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    • v.39 no.3
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    • pp.139-163
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    • 2005
  • Various corpus-based approaches, rhetorical roles of discourse structure, and unifications of similar sentences were applied to construct the automatic Ext/Sums(extracts and summaries). Rhetorical roles of sentences like objective, method, background, result, conclusion, etc. for making elastic Ext/Sums were established and extraction engines according to respective role were prepared. The $90\%$ of Success rate in extracting the important sentences of sample articles was accomplished. Rearranging the selected sentences, it used unification of similar sentences using the cosine coefficient equation, deletion of unnecessary modification and insertion clauses, junction of short sentences, and connection of sentences able to link. They suggest the methods applying rhetorical roles of sentences, meaning and signature of noun and verb in clauses, and cue words and location will be researched to construct the more effective Ext/Sums.

Joint analysis of binary and continuous data using skewed logit model in developmental toxicity studies (발달 독성학에서 비대칭 로짓 모형을 사용한 이진수 자료와 연속형 자료에 대한 결합분석)

  • Kim, Yeong-hwa;Hwang, Beom Seuk
    • The Korean Journal of Applied Statistics
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    • v.33 no.2
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    • pp.123-136
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    • 2020
  • It is common to encounter correlated multiple outcomes measured on the same subject in various research fields. In developmental toxicity studies, presence of malformed pups and fetal weight are measured on the pregnant dams exposed to different levels of a toxic substance. Joint analysis of such two outcomes can result in more efficient inferences than separate models for each outcome. Most methods for joint modeling assume a normal distribution as random effects. However, in developmental toxicity studies, the response distributions may change irregularly in location and shape as the level of toxic substance changes, which may not be captured by a normal random effects model. Motivated by applications in developmental toxicity studies, we propose a Bayesian joint model for binary and continuous outcomes. In our model, we incorporate a skewed logit model for the binary outcome to allow the response distributions to have flexibly in both symmetric and asymmetric shapes on the toxic levels. We apply our proposed method to data from a developmental toxicity study of diethylhexyl phthalate.