타원 패치-슬롯형 UWB 안테나의 해석

장준원,최경,황희용 江原大學校 産業技術硏究所 2007 産業技術硏究 Vol.27 No.B

In this paper, an modal analysis based on the distribution of the electromagnetic fields on the UWB elliptical patch-slot antenna is presented. We designed the UWB antenna by iterating the dimensional parameters of the antenna as the traditional design method. Then the antenna was carefully analyzed using 3D E-M simulator. The result of the analysis shows that the slot antenna operates on a series of the multi-pole radiations based on TE modes matched to the system impedance. This result gives us an easier method to design the similar antennas, which is the impedance matching to the system impedance after once constructing a proper structure with a series of multi-mode resonances.

와인 잔 형태 슬롯-패치 UWB 안테나의 설계

장준원,황희용 강원대학교 정보통신연구소 2008 정보통신논문지 Vol.12 No.-

In this pafer, we proposed a wineglass slot-patch UWB antenna using approximately symmetry plane for prototype antenna of circular-slot UWB antenna. Using on field patterns, we show that the prototype circulat-slot UWB antenna operates on a series of multi-pole radiation based on TEn modes and the first resonant frequency by designed prototype antenna slot size. Ee designed and fabricated the wineglass slot-patch UWB antenna on FR4 substrate with t=1.524mm, εr=4.4 and tanδ=0.025, which not only has the half size of the original but also maintains UWB characteristics. The measured gain is reduced a little however radiation patterns are similar to that of the prototype antenna and maintain identical direction of max gain for all operation frequency.

FeCl₃-Si초매시스템을 이용한 ABS/SAN의 난연화에 관한 연구

장준원,김진화,배진영 한국고분자학회 2002 한국고분자학회 학술대회 연구논문 초록집 Vol.2002 No.10

위치결정 스테이지의 정밀위치결정을 위한 가상모드 입력성형기 응용에 관한 연구

장준원,박상원,서용규,홍성욱 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

This paper deals with precise positioning of positioning stage by input shaping, Input shaping is well known to be a very effective tool for suppressing the residual vibration of flexible structures. However, the input shaping tends to increase the rise time of the system. This problem often degrades the performance of system, In order to improve this problem, this paper proposes an input shaping method using the virtual mode concept for positioning stage. The virtual-mode input shaper is proved effective through experiments.

양극산화에 의한 나노튜브형 광촉매 박막개발

장준원,박재우 대한환경공학회 2007 대한환경공학회 학술발표논문집 Vol.2007 No.12

산소플라즈마와 급속열처리에 의해 제조된 티타니아 박막의 휴믹산 제거

장준원,박재우,Jang, Jun-Won,Park, Jae-Woo 한국지하수토양환경학회 2007 지하수토양환경 Vol.12 No.3

본 연구에서는 산소플라즈마로 티타늄을 산화하고 급속열처리하여 티타니아 광촉매 박막을 제조하고 휴믹산 제거실험을 수행하였다. 플라즈마 화학기상증착장치에서의 산소플라즈마는 티타늄 표면을 산화시킴으로써 광촉매 피막을 생성하게 된다. 증착조건에서 RF power는 최대 500 W 이하에서 100 W, 150 W, 300 W, 처리시간은 5분, 10분에서 조절되었다. 박막의 특성은 XPS와 XRD로 측정하였다. 실험으로서 우리는 박막이 높은 성능을 나타내는 최적을 조건을 찾았다. 또한 제조된 박막의 경우 기존 Thermal spray Titania film에 비해 2배정도 우수하였고 분말만큼 광촉매 성능을 갖는다. Titanium was oxidized with oxygen plasma and calcinated with rapid thermal annealing for degradation of humic acid dissolved in water. Titania photocatalytic plate was produced by titanium surface oxidized with oxygen plasma by Plasma Enhanced Chemical Vapor Deposition (PECVD). RF-power and deposition condition is controlled under 100 W, 150 W, 300 W and 500 W. Treatment time was controlled by 5 min and 10 min. The film properties were evaluated by the X-ray Photoelectron Spectroscopy (XPS) and X-Ray Diffraction (XRD). From the experimental results, we found the optimal condition of titania film which exhibited good performance. Moreover photocatalytic capacity was about twice better than thermal spray titania film, and also as good as titania powder.

국민학생의 체육수업에 대한 정신적 기능 연구

장준원 仁川敎育大學校 1991 論文集 Vol.25 No.2

The purpose of this study is to examin the psychological skills for physical education instruction in elementary school student, to provide informations on instructional process for elementary school teachers. The informants used in this study were 1486 students(male 777, female 709). They included 3rd, 4tbt 5th, 6th elemantary school students. The sample population were selected at random. The research instrument was PSIS (Psychological Skills Inventary for Sports) Form 5 designed by Michael J. Mahoney. The treatment of data used in this study was 2-Way ANOVA. The conclusion were as follows: 1. In bitems of psychollgical skills for physical education unstruction in elementary school student, Korean PSIS questionaire isshowed a significant of validity and reliability. 2. In the anxiety level of physical education instruction, there is significant difference variance among the four class and between the sex. 3. In the concentration level of physical education instruction, there is significant difference variance among the four class but no significant difference vaviance the sex. 4. In the confidence level of physical education instruction, there is significant difference variance among the four class and between the sex. 5. In the mental preparation level of physical education instruction, there is significant difference variance among the four class and between the sex. 6. In the motivation level oFphysical education instruction, there is significant difference variance among the four class and between the sex. 7. In the team emphasis level of physical education instruction, there is significant difference variance among the four class and between the sex.

Plyometric Training과 비타민 C 투여가 남고생의 체력, 혈중 젖산, 암모니아 및 젖산탈수소효소에 미치는 영향

장준원,김세종,이현미,서혜림,조현숙,고정림,염종우,예정복,백영호 釜山大學校 附設 體育科學硏究所 2003 體育科學硏究所 論文集 Vol.19 No.-

The purpose of this was to examine the effect of plyometric training and vitamin C ingestion on physical fitness and fatigue substance....

레슬링 選手의 경기능력과 體格 및 體力要因간의 상관관계

장준원 인하대학교 스포츠과학연구소 2000 論文集 Vol.12 No.-

This research measured 18 physique factors (body weight, standing height, sitting height, girth of head, girth of neck, girth of waist, girth of thigh, girth of the calf of the leg, girth of ankle, strethch of arms, length of hand, length of foot, girth of forearm and length of leg) and 15 physical fitness factors(trunk flexion, back strength, left-hand grip strength, right-hand grip strength, trunk extention, 30m speed, 100m speed, 400m speed, 800m speed, pull-up, standing board jump, sargent or vertical jump, side step test, burpee test and vertical jump reaction time) to show the co-relation among the factors of competition cpmpetence, physique and physical fitness. For competition competence, we used the one-year results of wrestlers from the first to the fifth of national matches. The numbers of wrestlers that were used was 28. To sum up the results of the research according to the statistic co-relation, the physique excellent freestyle wrestlers are tall sitting height, small grith of the calf of the leg, thick girth of neck, small girth of head, thick girth of wrist. And there were no physical fitness characteristics. Excellent Greco-roman wrestlers and this physical fitness characteristics are strong back strength, fast vertical jump reaction time.

단안 하사근약화술 후 반대안의 하사근기능항진

장준원,경성은 대한안과학회 2015 대한안과학회지 Vol.56 No.3

Purpose: To investigate the effect of unilateral inferior oblique weakening procedures on contralateral inferior oblique muscle functions and factors that may have an effect on contralateral inferior oblique muscle overaction (IOOA). Methods: A retrospective chart review was conducted of medical records of 40 patients who underwent unilateral inferior oblique(IO) muscle weakening procedures from 2007 to 2011 and were observed during a follow-up period of more than 6 months.These patients were composed of primary IOOA (4 patients), secondary IOOA due to superior oblique muscle (SO) palsy (21 patients),secondary IOOA due to inferior rectus muscle palsy (1 patient), and dissociated vertical deviation (DVD) accompanied with IOOA (14 patients). Factors that may have an effect on contralateral IOOA after undergoing the operation were assessed. Results: There were 7 patients (17.5%) who had over +2 IOOA after operation. IOOA on contralateral eye was increased from average of +0.00 to average of +0.66 ± 0.14 in 6 months after operation (p < 0.01). There were no statistically significant differences between preoperative factors and functional changes in contralateral IO muscle. Conclusions: There were no statistical factors that may have an effect on contralateral IOOA but the possibility of masked SO palsy before performing unilateral IO weakening procedures should be considered. In patients who have unilateral DVD associated with IOOA or small hypertropia, the contralateral IOOA can be more definite after operation; thus caution should be taken before operation. 목적: 단안에 시행된 하사근약화술이 반대안의 하사근기능항진에 영향을 주는 인자들에 대하여 알아보고자 하였다. 대상과 방법: 본원에서 2007년부터 2011년까지 단안 하사근약화술을 시행 받은 환자 중 6개월 이상 추적 관찰된 40명 환자들을 대상으로 의무기록을 후향적으로 조사하였다. 40명의 환자들은 원발성 하사근기능항진(4명), 상사근마비에 의한 이차성 하사근기능항진(21명), 하직근마비(1명), 하사근기능항진을 동반한 해리수직편위(14명)이었으며 단안 하사근약화술 후 반대안의 하사근기능항진에 영향을 주는 인자들에 대하여 조사하였다. 결과: 단안 하사근약화술 후 반대안에 +2 이상의 하사근기능항진은 7명(17.5%)에서 관찰되었다. 반대안의 하사근기능항진은 수술 전평균 +0.00에서 수술 6개월 후 평균 +0.66 ± 0.14로 유의하게 증가하였다(p<0.01). 수술 전 진단, 환측의 하사근기능항진 정도,동반되어 있는 수평사시의 유무 및 양, 머리기울임 유무에 대해 수술 후 반대안의 하사근기능항진에는 통계학적 유의한 차이가 없었다. 결론: 반대안의 하사근기능항진에 관여하는 유의한 인자는 없었으나 단안 하사근약화술 시 가면된 상사근마비의 가능성을 고려하고,적은 양의 상사시, 하사근기능항진을 동반한 한눈 해리수직편위의 경우 반대안의 하사근기능항진이 확연해질 수 있으므로 주의해야 할 것으로 생각한다.