탠덤형 히트펌프 시스템의 난방성능에 관한 연구

주정동(Jeong-Dong Ju),배경수(Kyung-Su Bae),이윤용(Yun-Yong Lee),황영규(Young-Kyu Hwang),정규하(Gyoo-Ha Jeong),이재승(Jae-Seung Lee),오상경(Sang-Kyoung Oh) 대한설비공학회 2003 대한설비공학회 학술발표대회논문집 Vol.2003 No.-

CNC선반의 오버라이드 기능을 이용한 칩 형상제어

오정규(Jeong Kyu Oh),김평호(Pyeong Ho Kim),구준영(Joon Young Koo),김덕환(Duck Whan Kim),김정석(Jung Suk Kim) 한국생산제조학회 2014 한국생산제조시스템학회 학술발표대회 논문집 Vol.2014 No.4

순동선삭가공에서 AE 신호를 이용한 칩 형상 제어

오정규(Jeong Kyu Oh),김평호(Pyeong Ho Kim),구준영(Joon Young Koo),김덕환(Duck Whan Kim),김정석(Jeong Suk Kim) 한국생산제조학회 2014 한국생산제조학회지 Vol.23 No.4

킨텍스(KINTEX) 제 2전시장 구조설계

조정규(Jeong Kyu Cho),오창기(Chang Ki Oh),후연희(Yeon Hee Hou),류종열(Jong Yeol Ryu),김승철(Seung Cheol Kim) 한국강구조학회 2009 韓國鋼構造學會誌 Vol.21 No.4

경희 - 프랑크푸르트 임상검사 ( Kyung Hee - Frankfurter Beschwerde Fragebogen ) 의 표준화 연구

김정규(Jung Kyu Kim),장환일(Hwan Il Chang),염태호(Tae Ho Yum),송지영(Ji Young Song),윤도준(Doh Joon Yoon),정우승(Woo Syng Jeong),오동재(Dong Jae Oh) 한국정신병리진단분류학회 1993 精神病理學 Vol.2 No.1

N/A N/A

대학(大學) Communicator의 공신력(公信力)과 학생(學生)의 정보습득(情報習得), 태도변화(態度變化)와의 상관관계연구(相關關系硏究) -건국대학교(建國大學校) 학생(學生)들의 반응분석(反應分析)을 중심(中心)으로-

김정규 ( Jeong Kyu Kim ),오성삼 ( Sung Sam Oh ) 건국대학교 교육연구소 1977 교사와 교육(구 교육논집) Vol.2 No.-

This study was aimed to find out the effects of credibility toward university administrative staff upon the efficiency of communication to the students. Recently, one of the most remarkable problems in organization has been problem of communication. Organization is created to get the job done efficiently. Communication has an important role in the achievement of that goal. Communication is made up of individual`s work with other individuals, groups, and the organization as a whole. And it can serve a variety of functions which may persuade, change attitude and inform, etc. The assurance of effectiveness and efficiency in the university communication is a vital factor in initiating and maintaining a quality of Education. So this study focuses attention on the factors for the communication effects in university organization. To find out the factors for the effects of communication, the study was conducted using bibliographical survey. Through this survey related theories, models and the related studies were drawn out. As the result of bibliographical survey, investigator had several questions such as the following: (1) Is there any correlation between the credibility of the university administrative staff and the communication effects on students? (2) Are there any differential effects of credibility by the intermediating of sox difference and educational age of students? And to solve above questions, investigator established two main hypotheses and four sup- porting hypotheses: 1. There is some correlation between the credibility of university administrative staff and the communication effects on students. I-a There is some correlation between the credibility and the information gain of student as a communication effect. I-b There is some correlation between the credibility and the attitude change of student as a communication effect. II. But there will be some differential effects in relationship to sex difference and education age. II-a Female student would be more influenced by the credibility than male student. II-b The higher division student would be less influenced by the credibility than those of lower division. To test these hypotheses, the study employed the filed survey. It was done by giving four kinds of questionnaire to Kon Kuk University Students (50 freshmen, 50 sophomore, 100 junior, 50 senior) in the first semester of 1977. The reason why investigator selected 100 junior was to compare sex differences within the same grade level. The procedures were as follows: Firstly, the credibility of university administrative staff was measured by the "Semantic Differential Scales" (15-bipolar adjectives- 5 safety, 5 qualification, 3 dynamism, 1 sociability) which were previously used by Berlo and Lemert. Secondly, investigator measured the information gain score and the attitude change score of students by giving questionnaire to high credibility group and low credibility group. Lastly, investigator calculated each measurements according to each hypotheses as follows: Hypothesis [I-a] was calculated by the correlation co-efficient between the credibility score of university administrative staff and the information gain score of student. And [I-b] was calculated by the correlation coefficient between the credibility score and attitude change score of students using the method of "Pearson". Hypothesis [II-a] was calculated by the Chi-Square (x(2)) between the credibility socre of university administrative staff and the information gain score of student. Hypothesis [II-b] was calculated by the Chi-Square (x(2)) between the credibility score and the attitude change score. And next the hypotheses [II-a], [I1-b] was calculated again by employing the 2x2 factorial analysis of Variance (F-test), such as high and low credibility x female and male students, high and low credibility x higher and lower division students. As the results of the above, initial hypotheses of this study was reexamined; (1) The hypothesis [I-a] was not supported in this study, because investigator did not find out the significant correlation coefficient the level is p) .05 (2) The hypothesis [I-b] was supported by mean score to the degree of the level of 0.01 So, the credibility of university administrative staff could influence the change of attitude of student as a communication effect. (3) The hypothesis [II-a] that female would be more influenced by the credibility than male student was not supported. F=.26 df=l p> .05 (4) The hypothesis [II-b] that higher division student would be less influenced by the credibility than those of lower division student was supported. The mean was significant at the 0.01 level. F=5.05 df=3 p> .01 Based on the above results, it was concluded that credibility of university administrative staff influences the attitude change of student in university communication, but does not influence information gain of student. Also, the credibility of university administrative staff could have less influence on higher division student than on those of lower division. But, there is no sex differences in influence of credibility.

구강건조증 환자의 임상적 특징에 관한 연구

오정규,김연중,고홍섭,Oh, Jeong-Kyu,Kim, Youn-Joong,Kho, Hong-Seop 대한안면통증구강내과학회 2001 Journal of Oral Medicine and Pain Vol.26 No.4

Advances in medical procedures and utilization of medication have resulted in expanding aged population, which leads to increased aged patients with salivary hypofunction and its associated symptoms in dental clinic. The purpose of this study was to investigate clinical characteristics of patients with dry mouth and its correlation with their salivary flow rate. Forty dry mouth patients (7 males, 33 females, mean age 42.0 years) whose flow rate of unstimulated whole saliva was less than 0.15 ml/min were included and their gender- and age-matched controls (7 males, 33 females, mean age 42.9 years) who did not report any complaints, suggestive of salivary gland dysfunction and had the flow rate of greater than 0.20 ml/min were included for comparison. The salivary flow rate was measured in both unstimulated and stimulated conditions. Dry mouth-related clinical information including history, dry mouth associated symptoms, exacerbating and relieving factors, drugs, systemic diseases, and family history was investigated using questionnaires. The differences in distribution of patients and control subjects to each question and their relation to the salivary flow rate were analyzed and we came to following conclusions. 1. There were statistically significant differences in the distribution of patients and controls to the following questions: the period and frequency of suffering from dry mouth; severity of dry feeling during a meal; severity of discomfort during swallowing; necessity of sipping liquids during swallowing dry foods, severity of discomfort in usual life due to dry feeling; self-assessment of residual salivary volume; taking medications. 2. The patients had more stress-related medical histories including indigestion, insomnia, and gastritis compared with controls. The patients took many kinds of medications to control their systemic diseases. 3. There were statistically significant differences in the salivary flow rate between different groups of patients to following questions: severity of dry feeling during a meal; severity of discomfort during swallowing; necessity of sipping liquids during swallowing dry foods. The difference was more significant in the case of stimulated salivary flow rate rather than unstimulated one. 4. The salivary flow rate of patients taking medications was significantly less than that of patients who did not take medications. The difference was more significant in the case of stimulated salivary flow rate rather than unstimulated one.

미각 이상 환자의 미각 역치 검사에 관한 증례 보고

홍주희,오정규,고홍섭,Hong, Ju-Hee,Oh, Jeong-Kyu,Kho, Hong-Seop 대한안면통증구강내과학회 2001 Journal of Oral Medicine and Pain Vol.26 No.2

The authors performed the taste threshold tests in two patients complaining taste problem who visited the Department of Oral Diagnosis, Seoul National University Dental Hospital. The taste thresholds were determined using a concentration series of five tastants, sucrose ( sweet ), NaCl ( salty ), citric acid ( sour ), quinine hydrochloride ( bitter ) and monosodium glutamate ( umami ). The taste solutions were diluted by half quarter logarithmic steps. The two patients showed higher taste thresholds level than normal but the taste threshold results did not coincide with the patients appeal. Further researches are needed for developing simple and precise diagnostic methods which can be applied to the patients with taste disorder.

습식표면처리 및 열 사이클에 따른 Cu/SiN_x 계면접착에너지 평가 및 분석

정민수,김정규,강희오,황욱중,박영배,Jeong, Minsu,Kim, Jeong-Kyu,Kang, Hee-Oh,Hwang, Wook-Jung,Park, Young-Bae 한국마이크로전자및패키징학회 2014 마이크로전자 및 패키징학회지 Vol.21 No.1

반도체 미세구리배선 적용을 위하여 구리배선의 습식 표면처리 및 열 사이클에 따른 구리 박막과 실리콘질화막 도포층 사이의 계면접착에너지를 4점굽힘시험을 통해 정량적으로 평가하였다. 구리배선을 화학적 기계적 연마한 후 습식 표면처리를 통하여 구리 박막과 실리콘질화막의 계면접착에너지는 $10.57J/m^2$에서 $14.87J/m^2$로 증가하였다. $-45{\sim}175^{\circ}C$범위에서 250사이클 후, 표면처리를 하지 않은 시편의 계면접착에너지는 $5.64J/m^2$으로, 표면처리를 한 시편은 $7.34J/m^2$으로 감소하였으며, 모든 시편의 박리계면은 구리 박막과 실리콘질화막 계면으로 확인되었다. X-선 광전자 분광법으로 계면 결합 상태를 분석한 결과, 화학적 기계적 연마 공정 후 구리배선의 표면 산화물이 습식표면처리에 의해 효과적으로 제거된 것을 확인하였다. 또한, 열 사이클 처리동안, 구리 박막과 실리콘질화막의 큰 열 팽창 계수 차이로 인한 열응력으로 인하여 구리 박막과 실리콘질화막 계면이 취약해지고, 계면을 통한 산소유입에 따른 구리 산화층이 증가하여 계면접착에너지가 저하된 것으로 판단된다. Effects of wet chemical treatment and thermal cycle conditions on the quantitative interfacial adhesion energy of $Cu/SiN_x$ thin film interfaces were evaluated by 4-point bending test method. The test samples were cleaned by chemical treatment after Cu chemical-mechanical polishing (CMP). The thermal cycle test between Cu and $SiN_x$ capping layer was experimented at the temperature, -45 to $175^{\circ}C$ for 250 cycles. The measured interfacial adhesion energy increased from 10.57 to $14.87J/m^2$ after surface chemical treatment. After 250 thermal cycles, the interfacial adhesion energy decreased to $5.64J/m^2$ and $7.34J/m^2$ for without chemical treatment and with chemical treatment, respectively. The delaminated interfaces were confirmed as $Cu/SiN_x$ interface by using the scanning electron microscope and energy dispersive spectroscopy. From X-ray photoelectron spectroscopy analysis results, the relative Cu oxide amounts between $SiN_x$ and Cu decreased by chemical treatment and increased after thermal cycle. The thermal stress due to the mismatch of thermal expansion coefficient during thermal cycle seemed to weaken the $Cu/SiN_x$ interface adhesion, which led to increased CuO amounts at Cu film surface.

석회암 유래 토양에서의 물의 이동특성과 토양 입자 및 유기물과의 관계에 따른 Pedo-Transfer Function의 결정

허승오(Seung-Oh Hur),정강호(Kang-Ho Jung),손연규(Yeon-Kyu Sonn),하상건(Sang-Keun Ha),김정규(Jeong-Gyu Kim) 한국토양비료학회 2009 한국토양비료학회지 Vol.42 No.2

강원도 남부(영월)와 충북 제천, 단양 등지에 널리 분포하는 석회암에서 유래된 토양은 점토 및 철분함량이 많은 식질계 토양으로 세립(細粒)질로 구성이되어 있고 자갈이나 잔돌이 있는 토양으로 분류되므로 토양의 침투 및 투수속도가 화강암이나 화강편마암 유래 토양과는 다른 양상을 보인다. 본 연구는 석회암 유래 토양의 침투속도와 토양층위별 투수속도 측정결과인 현장 포화수리전도도(Kfs, field saturationhydraulic conductivity)에 토양의 입도 분포 및 유기물 함량이 미치는 영향을 파악하고자 그들 사이의 상호관계를 분석하였다. 실험을 위해 이용된 토양은 과림, 모산, 장성, 마지,안미, 평안의 6개 토양통이었고 장력 침투계(disctension infiltrometer)와 투수속도 측정계(Guelphpermeameter)로 침투 및 투수속도를 측정하고 입도분포와 유기물함량을 분석했다. 전체 측정대상 토양의 표토 및 층위별 Kfs와 그 토양들의 모래, 미사, 점토 및 유기물 함량과는 유의한 상관관계를 찾을 수없었다. 그것은 측정 토양이 농경지 토양 외에도 산림 토양이 포함되어 있고, 산림토양도 유기물 층이 존재 한다거나 다량의 자갈이나 잔돌 등의 함량이 존재하기 때문인 것으로 여겨진다. 이것은 포화수리 전도도가 토양의 입도분포나 유기물 함량과의 관계가 있다고 했던 다수의 연구와는 상반된 결과이므로 이를 더검토해볼 필요성이 있다. 이를 위해, 측정된 6개의 대상 토양 중에서 암쇄토인 모산통과 유기물 함량이9.2%로 일반토양보다 월등히 높은 과림통의 O충을 제외하고 토양 입도분포 및 유기물 함량과 침투 및 투수속도와의 관계를 살펴보았다. 분석결과 모래의 함량과 Kfs의 관계는 결정계수(R<SUP>2</SUP>)가 0.309로 비교적 낮게 나타나고 있지만 정의 직선 상관관계를 나타냈으며, 미사함량과는 관계가 없었고, 점토함량과는 결정계수가 0.3164로서 부의 직선 상관관계를 나타냈다. 유기물 함량과는 다른 토양 입도분포들보다 결정계수가 높으며(R<SUP>2</SUP>=0.4884<SUP>*</SUP>) 지수함수 관계를 나타내고 있다. 이러한 결과들을 종합하면 석회암 유래토양에서의 현장포화수리 전도도는 모래나 유기물 함량이 많으면 증가하고 점토 함량이 많으면 감소할 것이므로 이들을 조합한다면 현장 포화수리전도도를 예측하는 PTF(Pedo-Transfer Function)를 작성할 수 있다. 본연구에서는 이를 위해 모래, 점토, 유기물 함량을 고려해 PTF를 분석한 결과 점토는 다중 공선성 때문에 제외를 하고 모래와 유기물 함량만을 이용해 Kfs를 예측할 수 있는 PTF를 작성했다. Soils originated from limestone, located at the southern part of Kangwon province and Jecheon, Danyang of Chungbuk province are mainly composed of fine texture, have different properties from soils originated from granite and granite gneiss, especially for water movement. This study was conducted for making PTF(Pedo-Transfer Function) for Kfs(field saturaton hydraulic conductivity) estimation, and for investigating the relation between soil particle distribution and the infiltration and percolation rate in soils originated from limestone. Soils used for the experiment were 6 soils of Gwarim, Mosan, Jangseong, Maji, Anmi and Pyongan series. Infiltration and percolation rate for the soil were measured by a disc tension infiltrometer and a Guelph permeameter, respectively. The particle size distribution and organic matter content of the soils were analyzed. Kfs was not related with sand, silt, clay, and organic mattrer (OM) content because of forest soils which contained high gravel, pebble, and cobble content, and O layer with high OM content. After Mosan soil series and O layer of Gwarim series were excluded for the data analysis, Kfs was explained as a linear function with sand and clay content and a exponential function with OM content. As a result, the PTF equation was obtained as Kfs=-4.20558+0.479706*(S) +0.023187*exp(1.829*OM) (R<SUP>2</SUP>=0.6558<SUP>*</SUP>).