웹3D 서비스 생성 시스템 개발

朴昌根,李明苑 水原大學校 2002 論文集 Vol.20 No.-

In this paper, we present a system for generating web-3D services which need virtual reality and database processing. It requires that databases should be updated automatically whenever some change occurs in the virtual environment, and that the environment should be modified according to the change in the databases correspondingly. In addition, it requires also that the object information in the 3D scene should be visualized so that users can modify each object's attribute directly in the scene, and that an interface should be provided for users to map textures on the objects using photo images. For the purpose, the system visualizes VRML objects composing the scene in a tree structure through which their attributes can be updated interactively. The modified attributes are recorded in the database automatically, and then they change the web-3D service contents accordingly. We present also a texture mapping algorithm using the weighted interpolation of viewpoints. Finally, we show a virtual shop application using the system.

顔貌變形症 患者에 있어서 顎矯正 手術前 心理 評價에 關한 臨床的 硏究

양명철,신효근,진우정 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.1

The need to assess preoperative psychological characteristics of orthoganathic surgery patients has recently been recognized. Fifty six patients were involved in this study, they were investigated in the preoperative psychosocial aspects. Korean Version Eysenk Personality Questionaire and Korean Version Tennessee Self-Concept Scale were used for psychological test. The results were as follows : 1. There was no significant difference of sex and age in the personality diamension, the selfconcept scale, and the preoperative tests(P>0.05). 2. 37% of subjects showed phonetic problem, 60% masticatory problem and 56% social problem for facial deformity. The first choice was the face in the order of correctionfor mastication, phonation and face. And 83% of the subjects forecasted the change in their face after surgical correction, The answer was generally vague. 64% of the subjects expected their personality to become more lively as a result of their operation. 3. Total positive self score and personal self score were less improved in the groups with high scores of toughmindness and neuroticism(P<0.05), degree of suffering was increased in the group with high scores of neuroticism(P<0.05). 4. Degree of subjective deformity, self-consciousness, and degree of dissimilarity were more improved in the group of intraversion, there was a significant correlation with degree of dissimilarity in the group with high score of toughmindness(r=-.64, P<0.05). 5. There was a significant correlation with the forecast of change in the groups with high score in extraversion(r=.59, P<0.01) and with low score in neuroticism(r=-.39, P<0.05).

용접 불티 차단막의 방염 및 난연성능 평가

권오승,이근원,하동명 한국화재소방학회 2001 한국화재소방학회논문지 Vol.15 No.2

본 연구에서는 조선 및 화학공장 등 산업현장에서 용접ㆍ용단작업 공정에서 비산 되는 불티에 의한 화재 예방를 위하여 불티 차단막에 관한 방염 및 난연 성능 평가를 실시하였다방영성능 실험결과 기존제품의 용접 불티 차단막 6종 모두 충분한 방염성능을 갖고 있었다그러나, 용접ㆍ용단 불꽃에 의한 난연성실험 결과 섬유유리에 수지코팅한 제품 2종은 용접ㆍ용단 불티에 대한 화재예방성능이 부족한 것으로 나타났다용접 불티 차단막의 최소산소지수의 국내기준은 30이상으로 고려하는 것이 좋을 것으로 사료된다용접 불티 차단막의 성능향상을 위한 지속적인 연구가 필요하며, 방염 및 난연성능 기술지침 개발의 기초자료로서 활용될 수 있을 깃으로 사료된다. This study was undertaken to evaluate the performance of flame retardant for fire precaution from sparks at welding-cutting process in industry sites such as shipbuilding yard and chemical factoryAs the results of the performance experiment, six kinds of welding blanket in samples that are used commercially had enough in the performance of flame retardantNevertheless, the performance to fire precaution on welding blanket shows that the coating product of two kinds is not sufficientThe lower oxygen index to welding blanket is considered that it is more than 30 in domestic standardWe suggested that the performance improvement of flame retardant for welding blanket need continuously, and the guideline of the flame retardant to welding blanket should be considered and established.

급성 심근경색후 생존심근 진단에서 Dobutamine 심초음파도와 Thallium 심근스캔의 정확성 비교

이근,강덕현,송재관,이철환,최기준,홍명기,김재중,박성욱,박종훈,박승정 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.2

Glutamate가 일측 흑질체 파괴 백서의 회전운동에 미치는 영향

한명일,정영철,은홍배,황익근,정상근 大韓神經精神醫學會 1997 신경정신의학 Vol.36 No.5

본 연구는 glutamate( , 과 M)가 일측 흑질체를 파괴한 백서에서 apomorphine으로 유도되는 회전운동에 미치는 영향을 알아보고자 하였다. 6-OHDA으로 우측 흑질체를 파괴한후 apomcrphine(0.1mg/kg)을 피하로 주사하면 병소반 대측으로 회전운동이 유발된다(641.7±163.9/hr). Glutamate는 apomorphine으로 유도되는 회전운동을 유의하게 감소시켰다. 그러나 이 glutamate의 감소효과는 GABA 길항제인 bicuculine에 의해 길항 그리고/ 또는 역전되었다. 이상의 실험결과에서 glutamate는 apomorphine으로 유도되는 회전운동을 감소시키고, 그 작용은 glutamate( ∼ M)가 선조체와 흑질체의 GABA 농도를 증가시킴으로써 나타났을 가능성을 시사한다. The aim of this study was to examine the effects of various concentrations of glutamate( , and M) on the circling movement induced by apomorphine in the unilateral substantia nigra-lesioned rats. Subcutaneous apomorphine(0.1mg/kg) elicited contralateral circling movement(641.7±163.9/hr). Glutamate( - M) significantly reduced the numbers of apomorphine-induced circling movement. This reducing effect of glutamate was antagonized and/or reversed by M GABA antagonist bicuculine. These results suggest that glutamate reduces circling movement induced by apomorphine and this reducing effect of glutamate may be mediated by increased GABA concentration in striatum and substantia nigra.

진동대 모형 실험과 3차원 수치해석을 통한 농업용 저수지의 내진안정성 분석

송창섭, 김명환, 우제근 忠北大學校 農業科學硏究所 2017 農業科學硏究 Vol.33 No.1

The object of this paper was to determine seismic safety of agricultural reservoir. This study was carried out to analysis for the displacement characteristic and seismic acceleration characteristic. This study compare and evaluated the results of shaking table tests and 3-D Numerical analysis. As a result of the shaking table test, acceleration increased 10% after the installation in the short period seismic wave toward the center of levee, The maximum displacement was 11.98 mm in long - term seismic wave, and the permissible shipment variation was corrected to be less than 1% and 220 mm in ‘Assessment and improvement of seismic performance of existing dam’. As a result of 3-D Numerical analysis by combined load of railway vibration load and ground acceleration, the acceleration increased by maximum 2.97 times from bedrock acceleration 0.154 g in short period and long period seismic wave, The displacement was found to be 79.6 mm above the bank in the long - term seismic wave after construction, and the permanent displacement was 11.5 mm in the railway. 3-D Numerical analysis results showed ‘Assessment and improvement of seismic performance of existing dam’ as well as shaking table model test. Further research is needed on the combined action of railway and seismic loads for the seismic stability of agricultural reservoirs.

TypeⅠ 極値分布의 頻度分析 및 確率圖示法에 의한 設計降雨量의 誘導

李淳爀,孟昇辰,朴明根 충북대학교 농업과학기술연구소 1994 農業科學硏究 Vol.12 No.1

Derivation of reasonable design rainfall was attempted by comparative analysis of design rainfall derived by frequency analysis of Type I extremal distribution and probability plotting technique for annual maximum 1-day, 1-hour and 10-minute rainfalls observed at Cheong Ju. The results were analyzed and summarized as follows : 1.Basic statistics were calculated for the analysis of Type I extremal distribution with annual maximum 1-day, 1-hour and 10-minute rainfalls at Cheong Ju. 2.Necessary parameters were derived by frequency analysis of Type I extremal distribution for annual maximum 1-day, 1-hour and 10-minute rainfalls at Cheong Ju. 3.Design annual maximum 1-day, 1-hour and 10-minute rainfalls in mm were derived by frequency analysis of Type I extremal distribution and probability plotting technique respectively at Cheong Ju. 4.Design annual maximum 1-hour and 10-minute rainfalls were derived by frequency analysis of Type I extremal distribution and probability plotting technique are shown to be much closer to the observed data but design annual maximum 1-day rainfall is not to be closer to the observed data. 5.Design annual maximum rainfalls following the duration derived by Type I extremal distribution are seemed to be more reasonable than those of probability plotting technique owing to the difference of individual eyefitting.

年流出量의 模擬發生에 관한 硏究

李淳赫,孟昇辰,朴明根 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.10 No.2

This study was conducted to get best fitting frequency distribution for the annual runoff and to simulate long aeries of annual flows by single-season first order Markov Model with comparison of statistical parameters which were derived from observed and synthetic flows at three watersheds in the Yeong San river basin. The results summarized through this study are as follows. 1.Hydrologic persistence for three watersheds were acknowledged by the correlogram analysis. 2.Normal distribution of the annual runoff for the applied watersheds was confirmed as the best by Kolmogorov-Smirnov test. 3.Statistical parameters were calculated from synthetic flows simulated by normal distribution. It was confirmed that those are very similar to statistical parameters of observed data. 4.Hydrologic persistence between observed flows and synthetic flows simulated was confirmed by the correlogram analysis. 5.It is to be desired that generation technique of synthetic flow in this study would be compared with other simulation techniques for the objective time series.

새마을기계화영농단의 적정모델설정에 관한 연구

김철기, 차균도, 유진채, 박명근 忠北大學校 새마을硏究所 1985 새마을 硏究 論文集 Vol.4 No.-

본문참고

청주공업단지조성이 주변농촌의 농업구조에 미친 영향 -농촌공업입지와 농가취업권조사를 중심으로-

김철기, 유진채, 박명근 忠北大學校 새마을硏究所 1985 새마을 硏究 論文集 Vol.4 No.-

본문참고