복합조직강 중 변태페라이트양에 따른 기계적 특성 변화

김동건,이기정,이준정 대한금속재료학회(대한금속학회) 1984 대한금속·재료학회지 Vol.22 No.10

Effect of transformed ferrite content on the mechanical properies of dual-phase steels has been studied and analyzed on the basis of observation on the austenite-to-ferrite transformation behavior during post-anneal cooling. Various contents of transformed ferrite were obtained by changing intercritical annealing temperature. As the transformed ferrite content was increased up to about 40%, dual-phase properties became better due to the finer distribution of martensite particles. However, the dual-phase properties were deteriorated when the transformed ferrite content becomes larger than the retained ferrite content. The significance of these results is discussed in relation to the austinite-to-ferrite trans formation behavior during intercritical annealing.

金·銀 硫化精鑛의 靑化에 關한 實驗的 硏究(Ⅰ)

金東健,李在夏 전북대학교 공업기술연구소 1976 工學硏究 Vol.5 No.-

This experiment was made to investigate the possibility of recovering gold and silver by all slime cyanidation process from a sulphide flotation concentrate with recovery of 95 percent gold and 65 percent silver. The sample furnished for this experiment was from Geochang mine and subjected to grind to minus 150mesh prior to leaching. Leaching is carried out by aero-agitation in the solution of 0.20 per cent NaCN, and 0.03 percent CaO as protective alkali and the pulp dilution was 2:1. The experiment showed 95percent gold and 65 percent silver recovery after 72 hour cyanidation.

獨逸體育 確立에 關한 硏究 : Jahn을 中心으로 With Emphasis on Jahn

金東建,安容奎,李大珩 충남대학교 1991 忠南科學硏究誌 Vol.18 No.1

I have surveyed the study of establishment of physical education of Germany with emphasis on Jahn. An idea of traditional physical education of Germany is derived from physical education of championship and is influenced by the culture of Rome and Christianity. As a result, it has become a prominent figure of a new idea of physical education. That is to say, physical education at that time took a passive attitude because of the thought that physical exercise was meaningless. Thereafter, Basedow who was influenced by Rousseau conducted physical education on the basis of patriotism. Gutsmuths encouraged physical education from the view point of pure education. But Jahn developed physical education based on nationalism. Jahn born to a religious family was a model of nationalism. He devoted his whole life to cultivating healthy body, team spirit and strong nationalism by means of Turmen movement. He thought national traits of Germany resulted from the people's union which was inner instinct, a life and productive power of the people. Therefore, he tried to cultivate the spirit of nation through physical training. Jahn intended to achieve the goal of nationalism through gymnastics. He conducted the life of body on the basis of national traits of Germany, topographical character and powerful physical strength in relation to the goal of nationalism.

水宮歌 毛族會議 대목의 존재양상과 의미

김동건 慶熙大學校 大學院 1998 高凰論集 Vol.22 No.-

製絲時(韓國,中國産고치)의 界面活性劑(Monopol LX, Emulon DO#113) 處理가 製絲成績에 미치는 影響

최진섭,裵啓宣,鄭元福,金東建 東亞大學校生命資源科學大學附設 農業資源硏究所 1992 農業生命資援硏究 Vol.1 No.1

본 實驗은 界面活性劑인 Monopol LX와 Emulon DO #113을 0.04%, 0.07%, 0.1%로 稀釋하여 煮菌時의 低溫渗透部 단독 處理區와 低溫渗透部 및 繰絲湯의 동시 處理區로 하여 中國産고치와 韓國産고치의 繰絲成績 및 絲質을 調査 分析한 結果는 다음과 같다. 1. 解舒率은 韓國産, 中國産 모두 無處理區에 비해 Monopol LX 와 Emulon DO #113을 處理時에 增加하였으며 0.1% 濃度에서 그 경향이 높았다. 2. 解舒絲長은 解舒率과 같은 傾向으로 無處理區보다 Monpol LX와 Emulon DO #113 處理區에서 전반적으로 길어졌는데 특히 中國産고치에서 Monopol LX 0.1% 處理時 高度의 有意差를 보였다. 3. 菌絲長은 處理別로 다소의 增感은 있었으나 無處理區와 거의 비슷한 傾向을 나타내었다. 4. 菌絲量은 Monopol LX와 Emulon DO #113약제 처리시에 감소하는 경향을 나타내었다. 5. 生絲量比率은 無處理區에 비해 減少하는 경향을 나타내었다. 6. 副蠶絲量은 界面活性劑 處理의 結果 그 양이 減少되었으며 특히 韓國産 누에고치에서 0.07%, 0.1%의 Emulon do#113 渗透部 및 繰絲湯 處理區에서 5%의 有意差를 보였다. 7. 解舒率이 높을수록 無處理區에서는 强力은 負의 相關을 解舒絲長, 繭絲長, 繭絲量, 生絲量比率, 伸度등에서는 正의 상관을 나타내었고, Monopol LX 0.1% 處理區는 副蠶絲量에서, 그리고 Emulon Do#113 0.1% 處理區에서는 副蠶絲量, 繭絲織度, 伸度 등에서 負의 相關을 나타내었다. 8. 한국산 고치에 비해 중국산 고치는 고치의 크기가 작고, 解舒率, 解舒絲長, 繭絲長, 繭絲量, 生絲量比率, 伸度등의 成績이 떨어졌으며, 副蠶絲量이 많은 편이었다. This experiment was carried out to investigate the reeling silk results and silk quality of Korean cocoon and Chinese cocoon which were experimented on the following condition that Monopol LX & Emulon DO #113(penetrating agents) were 0.04%, 0.07%, 0.1% under only low temperature osmose treatment and simultaneous treatment of low temperature osomose & reeling bath in cocoon cooking, and the results obtained were as follows; 1. The percentage of reliability increased in the treatment of Monopol LX, Emulon DO #113 as compared with control in both Korean cocoon & Chinese cocoon exhibited a high tendency in 0.1% concentration to the extent to show a significant difference. 2. The nonbreaking length of a bave was totally longer in the treatment of Monopol LX, Emulon DO #113 than control as in the percentage of rawsilk, especially, showed a highly significance in the treatment of Monopol LX 0.1% of Chinese cocoon. 3. The length of a bave showed almost similar tendency to control with more or less increase and decrease according to the treatments. 4. Decreasing tendency was revealed in treating Monopol LX and Emulon DO #113 on the terms of the bave weight. 5. On the terms of the percentage of rawsilk, decreasing tendency was appeared in treating plots as compared with control. 6. The weight of byproduct was decreased by treating the penetrating agents especially on Korean cocoon, the statistically significant differences of 5% were revealed in treating the osomose and reeling both of Emulon DO #113 concentrated with 0.07% and 0.1%. 7. Negative correlation in tenacity was appeared in control as increasing the percentage of rawsilk, and positive correlation in the nonbreaking length, length of a bave weight, percentage of reliability, and elongation was convinced and also negative correlation was revealed in weight of byproduct treated with Monopol LX(0.1%) and in weight of by product, size of bave, and elongation treated with Emulon DO #113(0.1%), 8. The percentage of rawsilk, nonbreaking length of a bave, percentage of reliability, weight of a bave, size of a bave and elongation of Chinese cocoon were all lower than those of Korean cocoon, and on the hand, the weight of byproduct was more.

최소자승 혼합분포추정에서의 최소자승 교차타당성 최적 평활계수의 추정

김동건 동덕여자대학교 2001 정보과학연구 Vol.5 No.-

최소자승혼합분포(The Least Squares Mixture Decomposition Density Estimation)는 기존의 커널 분포추정을 최소자승 기준 하에서 확장한 분포 추정법으로 커널추정보다 간략한 표현으로 확률밀도함수를 추정할 수 있는 장점이 있다. 본 연구에서는 Rudemo가 커널 추정시 최적 평활 계수 선정법으로 제안한 최소자승 교차타당성함수를 이용하여 최소자승 혼합분포 추정시 최적 평활 계수를 선정하는 방법을 고찰하였다. The least squares mixture decomposition density estimation is a modified version of kerne1 density estimation under the least squares criterion and provides a sparse representation of underlying probability density function. In this study, the least squares cross-validation method originally proposed by Rudemo (1982) for the optimal smoothing parameter in kernel estimation has been modified for the least squares mixture estimation.

TTS System를 위한 휴지 유무 판별 통계모형비교

김동건,조진남 동덕여자대학교 2002 정보과학연구 Vol.6 No.-

본 연구에서는 자연스러운 합성음을 생성하는 한국어 TTS 시스템의 성능 향상을 위하여 필수적인 휴지 유무 예측에 적용할 수 있는 통계 모형들을 소개하고, 각 모형의 성능을 비교 분석하였다. 남성 단일화자가 발성한 400문장 음성 코퍼스를 바탕으로 휴지 유무에 대한 분류트리, Bagging Tree, Ada Boost와 SVM 모형을 적용하여 휴지 유무 예측에 대한 성능을 비교 평가하였다. 그 결과 SVM, Bagging Tree, Ada Boost, 분류트리의 순으로 성능이 좋았으나 그 향상의 정도는 크지 않은 것으로 나타났다. This study surveys and compares the performance of different statistical models for pause detection which play essential roles in enhancing the TTS systems performance. We have used classification tree, bagging tree, Ada Boost and SVM on the corpus generated from 400 sentences by a single male speaker. SVM model outperforms the other three models with marginal enhancement.

편마비 환자의 정상측과 마비측의 비복근 운동점에서의 근육 두께 차이

김동건,도현경,김현동,황지선,정규영,정호중 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.1

Objective : To investigate any difference of muscle thickness in the motor points of the gastrocnemius between the paretic and non-paretic legs in hemiplegics. Method : Ultrasonography was used to assess in vivo the gastrocnemius muscle thickness at the motor points in the paretic and non-paretic legs of twenty-four patients with stroke. Results : Muscle thickness at the motor points were reduced in the paretic legs compared to the non-paretic legs (p<0.05). There was no correlation between muscle thickness and duration of hemiplegia, site of hemiplegia. However, it did not take regular pattern of the muscular atrophy in the paretic legs. Conclusion : The gastrocnemius muscle of the paretic leg had smaller thickness compared with the non-paretic leg. The present results indicate that paresis in hemiplegics may affect the accuracy of intramuscular injection of botulinum toxin A. Therefore, we recommend ultrasonography for visually controlled, anatomically precise injection of botulinum toxins.

학교폭력예방 및 대책에 관한 법률 개정의 주요쟁점

김동건 培材大學校 社會科學硏究所 2012 사회과학연구 Vol.34 No.1

The word, "Student Juvenile Violence" indicate the violences committed by student and committed to the student in Korea. Student Juvenile Violence is very severe problem in Korea. It led many student to death nowaday in Korea. So the National Assembly in Korea legisㅣated “Prevention and Countermeasure of Student Juvenile Violence Law” This Law aimed to prevent the student juvenile violence and to give the countermeasure for that. But the law have several problems. This article indicate the problems in it and point out the solution for that by revising some provision in it.

태권도 지도자의 자질에 관한 연구

김동건,장태윤 충남대학교 체육과학연구소 2006 體育科學硏究誌 Vol.23 No.1

This study was conducted to identify the most important qualities that Taekwondo masters need for their jobs. It used questionnaire among 175 of the 190 Taekwondo masters and their members from Daejeon city. 71 items suggested by the researcher were divided into seven categories by a panel of professors: (a) characteristics and attitudes, 12 items, (b) abilities and skills, 13 items, (c) knowledge, 14 items, (d) education and experience, 7 items, (e) instructional methods, 12 items, (f) interpersonal relationships, 6 items, and (g) management, 7 items. The respondents were asked to identify the most important qualities that they perceive themselves to be necessary for success on the job. The results of this study showed that the most important qualities regarding characteristics and attitudes were social trait, martial spirit, physical health. With regard to abilities and skills, the item that received the counseling sills was regarded as more important than the other items. In the instructional method category, devise instructional plans and executed them accordingly was regarded as more important than the other items. With regard to knowledge, coaching and instruction was considered to be the most important quality that masters should have. With regard to education and experience category, instructing experience was considered to be the most important quality that masters should have. The results of this study lead to the conclusion that these items should be a major concern for masters who wish to be successful on the job, and they should be aware of the need to develop their qualities accordingly.