RSM 법에 의한Li₂O-Al₂O₃-SiO₂ (LAS) 유리의 소결 거동과 결정화에 대한 연구

이규호,김영석,정영준,김태호,서진호,류봉기,Lee, Kyu-Ho,Kim, Young-Seok,Jung, Young-Joon,Kim, Tae-Ho,Seo, Jin-Ho,Ryu, Bong-Ki 한국세라믹학회 2007 한국세라믹학회지 Vol.44 No.8

This paper presents results and observations obtained from a study of sintering behavior and crystallization in $Li_2O-Al_2O_3-SiO_2$ (LAS) Glass by screen printing method. The variable experimental conditions were determined carefully by Thermal-Mechanical Analyzer (TMA), Differential Thermal Analyzer (DTA) for setting the optimum transparent sintering conditions in LAS glass system, $10.5Li_2O-14.7Al_2O_3-58.1SiO_2-16.7B_2O_3(wt%)$, such as glass-ceramics which usually have low crystallization temperatures. Crystallization glasses generated during sintering was observed from diffraction patterns by X-Ray Diffraction (XRD), transmittance by UV-Vis spectrometer. Finally, the optimum sintering condition of LAS glass and the relation between factors and results in several sintering conditions were given by using Response Surface Methodology (RSM). From this study, we confirmed that crystallization interrupted densification during glass powder sintering. Furthermore, we observed that main effect of factors in glass powder sintering with concurrent crystallization depended on experimental conditions from main effects plot by MINTAB-14.

이유시기가 한우 송아지의 발성빈도에 미치는 영향

이규호,유정원,김상욱,정왕용,이원현,이상락,Lee, Kyu-Ho,Yu, Jung-Won,Kim, Sang-Wook,Jung, Wang-Yong,Lee, One-Hyun,Lee, Sang-Rak 한국축산환경학회 2014 한국축산시설환경학회지 Vol.20 No.4

This study was conducted to investigate the effect of weaning period on the vocalization frequency of Hanwoo calf. Twelve Hanwoo calves were allocated into 4 groups, control (forced weaning on 90days) and treatment (weaning on 70, 90 and 120days with 5 adaptation days). After weaning, behavior and vocalization of Hanwoo calves were recorded on 3 consecutive days with closed circuit television (DTC-R5254, Digite Co., Ltd., Korea) and digital audio tape recorder (SR-900, Idamtech Co., Ltd., Korea). Vocalization frequency of Hanwoo calf were not significance difference with control and treatment group. Thus, additional studies of feed intake and body weight gain were needed to determine the weaning period of Hanwoo calves.

적응형 인자 모델을 이용한 개선된 진공펌프 상태진단에 관한 연구

이규호,이수갑,임종연,정완섭,Lee, Kyu-Ho,Lee, Soo-Gab,Lim, Jong-Yeon,Cheung, Wan-Sup 한국진공학회 2011 Applied Science and Convergence Technology Vol.20 No.3

본 논문에서는 건식 진공펌프에서 측정한 다중 변수로 구성된 배치데이터의 통계적인 특성을 소개한다. 흡입구 및 배출구 압력과 부스터/드라이 펌프의 소비전류와 같은 상태변수의 변위분포는 2개나 3개의 특정적인 구간으로 나뉘는 특성이 있다. 이런 관측을 통해 발견한 통계학적 특성을 나타내기 위해 적응형 인자 모델(APM)을 사용하였다. APM 모델기반의 배치 데이터는 건식 진공펌프의 상태를 진단하는데 적절함을 증명하였고, 이전의 동적 시간 왜곡 알고리즘과 비교하였을 때 계산시간 및 필요 메모리 면에서 효율적임을 확인하였다. This paper introduces statistical features observed from measured batch data from the multiple operation state variables of dry vacuum pumps running in the semiconductor processes. The amplitude distribution characteristics of such state variables as inlet pressures, supply currents of the booster and dry pumps, and exhaust pressures are shown to be divided into two or three distinctive regions. This observation gives an idea of using an adaptive parametric model (APM) chosen to describe their statistical features. This modelling, in comparison to the traditional dynamic time wrapping algorithm, is shown to provide superior performance in computation time and memory resources required in the preprocessing stage of sampled batch data for the diagnosis of running dry vacuum pumps. APM model-based batch data are demonstrated to be very appropriate for monitoring and diagnosing the running conditions of dry vacuum pumps.

주파수 영역에서의 Gaussian Mixture Model 기반의 동시통화 검출 연구

이규호,장준혁,Lee, Kyu-Ho,Chang, Joon-Hyuk 한국음향학회 2009 韓國音響學會誌 Vol.28 No.4

In this paper, we propose a novel method for the cross-correlation based double-talk detection (DTD), which employing the Gaussian Mixture Model (GMM) in the frequency domain. The proposed algorithm transforms the cross correlation coefficient used in the time domain into 16 channels in the frequency domain using the discrete fourier transform (DFT). The channels are then selected into seven feature vectors for GMM and we identify three different regions such as far-end, double-talk and near-end speech using the likelihood comparison based on those feature vectors. The presented DTD algorithm detects efficiently the double-talk regions without Voice Activity Detector which has been used in conventional cross correlation based double-talk detection. The performance of the proposed algorithm is evaluated under various conditions and yields better results compared with the conventional schemes. especially, show the robustness against detection errors resulting from the background noises or echo path change which one of the key issues in practical DTD. 본 논문에서는 주파수 영역에서의 가우시안 혼합 모델 (Gaussian Mixture Model, GMM) 기반의 새로운 동시통화 검출 (Double-talk Detection, DTD) 알고리즘을 제안한다. 구체적으로 주파수 영역에서의 음향학적 반향억제 (Acoustic Echo Suppression, AES)를 위한 동시 통화 검출 알고리즘을 구성하기 위해 기존의 시간 영역에서의 동시통화 검출에 사용되는 상호 상관계수를 이산 푸리에 변환을 통해 16개 채널의 주파수 영역으로 변환하였다. 이러한 주파수 영역에서의 상호 상관계수를 GMM의 보다 효과적인 구성을 위해 통계적 분류 특성에 근거하여 우수한 7개를 선별하였다. 본 논문은 이러한 특징 벡터로 패턴인식에서 우수한 성능을 보이는 GMM을 구성하였으며 원단화자만 있는 구간, 동시통화 구간, 근단 화자만 있는 구간을 우도 (Likelihood) 비교에 따라 분류함으로써 별도의 원단 화자 신호에 대한 음성 검출기 (Voice Activity Detector, VAD)의 사용 없이 잡음환경과 반향 경로 변화에서 강인한 동시통화 검출 알고리즘을 제안한다. 다양한 실험 결과 제안된 방법은 기존의 상호 상관계수를 고정된 문턱 값과 가부 비교하여 동시 통화 구간을 검출하는 hard decision 방법에 비해 검출 오류 확률 (Detection Error Probability)을 비교한 결과 우수한 성능을 보였다.

GZO 타겟 결정성에 따른 박막의 전기적 광학적 특성

이규호,김경환,Lee, Kyu-Ho,Kim, Kyung-Hwan 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.2

In this research, we prepared Ga doped zinc oxide(ZnO:Ga, GZO) targets each difference sintering temperature $700^{\circ}C$, $800^{\circ}C$, and doping rate 1 wt.%, 2 wt.%, 3 wt.%. The characteristics of thin film on glass substrates which deposited by facing target sputtering in pure Ar atmosphere are reported. Ga doped zinc oxide film is attracted material through low resistivity, high transmittance, etc. When prepared target powder's structure was investigated by scanning electron microscope, densification and coarsening by driving force was observed. For each ZnO:Ga films with a $Ga_2O_3$ content of 3 wt.% at input power of 45W, the lowest resistivity of $9.967{\times}10^{-4}{\Omega}{\cdot}cm$ ($700^{\circ}C$) and $9.846{\times}10^{-4}{\Omega}{\cdot}cm$ ($800^{\circ}C$) was obtained. the carrier concentration and mobility were $4.09{\times}10^{20}cm^{-3}$($700^{\circ}C$), $4.12{\times}10^{20}cm^{-3}$($800^{\circ}C$) and $15.31cm^2/V{\cdot}s(700^{\circ}C)$, $12.51cm^2/V{\cdot}s(800^{\circ}C)$, respectively. And except 1 wt.% Ga doped ZnO thin film, average transmittance of these samples in the range 350-800 nm was over 80%.

국산박류의 사료적 가치에 관한 연구 9 . 제독피마자박의 사료가치에 관한 시험

이규호,한인규,정천용 ( Kyu Ho Lee,In K . Han,Chon Yong Chung ) 한국축산학회 1978 한국축산학회지 Vol.20 No.2

This experiment was carried out using 440 broiler chicks to study the nutritive value of detoxicated castor bean meal for about 75 days when it was used in broiler rations. The castor bean meal used in this experiment was detoxicated by the method of autoclaving at 120℃ and 1㎏/㎠ pressure and then water treatment. The results obtained are summarized as follows: 1. The body weight gains were significantly different (P$lt;0.01) among treatments. Data revealed that the body gain was decreased as the level of castor bean meal increased in feed. The treatments 6, 10, 9, 2 and 3 containing the castor bean meal less than 5% in their rations were not significantly different with control group in body weight gain. 2. The weight gain of treatments 5 containing the castor bean meal up to 20% was significantly inferior to the ether treatments and some birds in this treatment have shown coma symptom during 1-2 weeks of age. 3. Feed required per ㎏ of body weight gain were significantly increased (P$lt;0.05) as the level of castor bean meal increased. However, among the treatments substituting castor bean meal for perilla oil meal or sunflower seed oil meal differences were not significant in feed efficiency. 4. The content of crude protein, crude fat and crude fiber of castor bean meal was 37.5%, 6.7% and 26.8%, respectively. Amino acid composition of castor bean meal was relatively superior to sunflower seed oil meal, similar to perilla oil meal and inferior to soybean meal. 5. It was found that the utilizability of dry matter, crude protein, crude fat and total carbohydrates of finisher diets were depressed as the level of castor bear meal increased in feeds. 6. The carcass rate was decreased (P$lt;0.05) in same trend as weight gain did and the carcass rate of treatment 5 was significantly inferior to the other treatments. 7. The values of thyroid gland weight, skin pigmentation score and serum cholesterol content were no significantly affected by the feeding castor bean meal.

이 기종 체계 연동을 위한 객체 모델 변환 프레임워크 연구

이규호 ( Kyu-ho Lee ),심준용 ( Jun-yong Shim ),김대영 ( Dae-young Kim ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1

국방 분야의 시스템 개발은 다양한 데이터표준 및 프로토콜로 인해 체계 간 상호 연동에 어려움이 있다. 특히, 다양한 아키텍처가 적용되는 LVC 연동훈련 체계는 적용 프로토콜 간 데이터 교환을 위해서 공통의 표준기술이 필요하다. 본 논문은 이러한 이기종 체계들 간 상호 연동을 위해서 객체 모델변환 프레임워크를 제시하였다. 제안 프레임워크는 다양한 이기종 체계가 가지는 객체 모델들과 프로토콜들을 구분하여 독립적으로 연동할 수 있도록 하였다. 또한, 체계 간의 종속성을 줄이고 구성 요소의 유연한 설계를 제공하기 위해서 3-Part 지원 모듈의 플러그인 방식 구조로 설계하였다.

LAS계 유리의 결정화 속도론 연구

이규호 ( Kyu Ho Lee ),김태호 ( Tae Ho Kim ),정영준 ( Young Seok Kim ),김영석 ( Young Joon Jung ),나영훈 ( Young Hoon Na ),류봉기 ( Bong Ki Ryu ) 대한금속재료학회 ( 구 대한금속학회 ) 2008 ELECTRONIC MATERIALS LETTERS Vol.4 No.1

This paper presents results and observations obtained from a study of crystallization behavior in Li2O-Al2O3- SiO2 (LAS) glass powders. Variable kinetic parameters have been obtained in order to investigate the crystallization behavior by using non-isothermal differential thermal analysis. LAS glass powders including B2O3 which induce a low firing process have been melted and crushed to obtain coarse and fine glass powder. In case of coarse particles with 88 μm, the crystallization have been generated at 649~699°C, the crystallization of fine particles with 44 μm have been observed at 640~684°C according to heating rate. In order to obtain the activation energy of crystallization (EC) and Avramic constant (n), Kissinger and Ozawa equations have been used. The average activation energies of crystallization were [44 μm=48.09±1 kcal/ mol, 88 ?m = 53.02±1 kcal/mol] Avramic constant (n) were [44 μm=1.3, 88 ?m=1.6] in Li2O-Al2O3-SiO2 (LAS) glass. Finally, we have observed the surface and bulk crystallization of β-spodumene were occurred simultaneously in this glass powder by using SEM (Scanning Electron Microscopy) and XRD (X-ray diffraction).

'한글풍월'의 부흥과 미디어 활용 방안

이규호(Lee Kyu-Ho) 대구대학교 인문과학연구소 2010 人文科學硏究 Vol.34 No.-

The term, Hangeulpungwol was used on the 《Dongailbo》 in 1939 for the first time, succeeding to its former ones, Gukmunpungwol and Eunmunpungwol. The 《Dongailbo》 asked its readers under the Japanese reign to send in Hangeulpungwol for the prize from all over the country three times between 1939 and 1940, and selected thirty one winning works. At that time, it seemed that Hangeulpungwol was thought not only as an 'entertainment-education' but also as 'Hangeul-keeper' by the 《Dongailbo》. As a result, this harmony between the entertainment of composing Hangeulpunwol and the education of enlightening Hangeul must be the key to the revival of it in the future. On the other hand, Hangeulpungwol has had the satirical and resisting functions in itself, having coped with Chinese, Japanese, and English as a countermeasure over times so far. In this point, the rehabilitation of its 'composing-for fun' spirit for depreciating, satirizing, and deriding the objects, must be the essence of the revival of it, too. Hangeulpunwol is easy for from children to adults to compose, as far as they keep to some rules, such as using only Korean alphabets and keeping rhymes and 4ㆍ3 meter, etc. In fact, most students in my class composed Hangeulpungwol and 'Hangeul seventeen-letter poem' very well, even trying Hangeulpungwol in the form of 'Sasiga', or 'Four-season' song. Now, it is necessary that we Korean people concentrate on writing and spreading Hangeulpungwol through the various kinds of media, so that it will be a brilliant global brand that can represent Korea. (Daegu University)

사이버불링에 대한 형법적 대응

이규호(Lee, Kyu-Ho) 한국법학회 2014 법학연구 Vol.56 No.-

최근 스마트폰의 보급 확대와 함께 SNS의 등장으로 이전에는 불가능했던 방대한 불량의 정보검색이나 온라인 교육 등이 시간과 공간을 초월하여 가능하게 된 반면에 개인정보침해나 해킹과 함께 피해자에게 지속적인 따돌림과 괴롭힘을 가하고 자살을 유도하는 글을 게시하는 경우까지도 발생하여 사이버불링을 당한 사람이 자살까지 하는 사태의 발생함으로써 사이버불링이 세계적으로 사회적인 이슈가 되고 있다. 우리나라의 경우에도 직장에서 왕따를 당한 피해자가 보복으로 칼부림을 벌이는 등 직장이나 학교와 같은 친밀감이 높은 집단에서 신고없이는 인지가 어렵다는 점을 이용하여 은밀하게 발생되기 때문에 왕따 · 괴롭힘 · 따돌림 등으로 인한 피해가 더욱 속출하고 있다. 특히 현실공간에서의 불링이 사이버공간에서도 함께 이루어져 피해자에게는 그 고통이 매우 심각하다. 그로 인하여 피해자가 매우 소극적인 방어기재로 자살을 선택하거나, 매우 극단적인 방어기재로 가해자를 살해하는 등 2차적인 문제까지 발생하는 경우도 있다. 따라서 각국은 사이버불링에 대응하기 위한 법제도를 마련하고 있으며, 우리나라 역시 2012년 학교폭력 예방 및 대책에 관한 법률의 개정을 통하여 사이버 따돌림에 대한 정의를 내리고 피해자지원을 위한 법제정의 근거를 마련한 상황이다. 그러나 학생이 아닌 일반인의 사이버불링에 대해서는 그 적용대상에 한계가 있어 법의 사각지대가 발생될 수 있다. 따라서 본 논문은 이러한 문제점과 동시에 사이버불링의 특성에 맞는 형법적 대응방안을 모색하기 위하여 사이버 불링의 개념과 원인에 대해서 살펴보고 각국의 사이버 불링에 대한 입법례를 검토한 후, 사이버 불링의 우리 형법에의 도입방향을 제시하고자 한다. The latest smart phone with expanding the supply of the SNS defective bridging the information search, you couldnt in the past with the advent of online education that transcends time and space makes it possible. On the other hand, with personal information infringement for victims of sustained bullying and harassment pose even occurring in the case to a lengthy letter to induce the suicides and the cyber bulling. The outbreak of suicide risks by people who had been cyber bulling and become a global issue. We bullied victim in the work will also brandish a knife in retaliation if of the country of staging the incident occurred. Without work or school and reported high concentration in the kind of closeness is difficult to know that using privately generated in bullying, and because bullying and harassment, damage caused by the back are even spring up. Especially in real space in cyber space is bulling. The victim had voted with the pain is so serious. A passive defensive suicide by his/her choice or due to his victims are very, very extreme I wrote the defense to perpetrators, including the murder of two primary problems that occur. Therefore, all the countries of the cyber response fire ring for 2012 also revised down and raise the legal systems, our country about school violence prevention and measures to revise the law. Through about cyber bullying and for victim support legislation a definition of a basis for the situation. But the students is not a general for cyber fire ring, for the applications I had a limit on the dark corners of the law can occur. Therefore, this paper is these problems and criminal law response measure that matched the characteristics of which fit on the same time look at them and the cause of concepts and, in order to seek cyber bulling. After reviewing the case, after each nations cyber fire ring, cybe bulling of introduction the direction to present our criminal law.