외상성 고막천공의 임상적 고찰

박형욱,김용기,임동명,윤신의,최봉남 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1

The authors observed the clinical findings of 99 cases of traumatic drum perforations, who visited the department of otolaryngology of Chosun University Hospital and KwangYang Hospital from January 1988 to August 1991 The results obtained were as follows; 1) As an etiologic factor, the indirect trauma occupies the most case (79.8%), out of which the most cases is by assault. 2) Age distribution indicates 30 decade(32.3%) and 20 decade(26.3%) in the declining order and sex distribution indicates male to female is 1;1.3. 3) On occupation, house wife is the most frequently involved (35.4%) and officials & students are in the next order. 4) Most common complaint is Hearing impairment and the next complaints are tinnitus, otalgia and hemorrhage in order. 5) The most frequent site of perforation is the central portion of anteroinferior and posteroinfehor quadrant, Gradel in size and triangular shape are common. 6) Seasonal variation indicates that the most frequent occurence of perforation is on summer. 7) Average 25-35㏈ of hearing loss is most common, and the degree of hearing loss is well correlated with the size of perforation. 8) Two way of therapeutic measure are compared. a. stimulating with trichloroacetic acid ; spontaneously healing in 22 cases (22.2%) b. closing procedure with paper patch ; healing in 68 cases (68.7%) 9)The overall healing time is within 2 months in the most of case (about 80%).

스포츠 에어로빅스 국제 우수 선수와의 연기내용 비교 분석

박종성,김원경,신용석 명지대학교 예체능연구소 1999 藝體能論集 Vol.10 No.-

The purpose of this study is to pursue a better dancing composition by conducting a comparison analysis the number of the degree of difficulty and the level composing the time of the major performance of the works of Korean players together with the work of the players of mixed pair part among the winners of top 6th palce in sports aerobics world championship contest. Taking a view over the result of this study, specially in the space composition(large in size) the distinguished foreign players demonstrated a colorful performance over the four (4) aspects of the stage. Although the Korean players had acted over many portions of the stage space their motion was somewhat restricted in simply straight form such as moving forward and back, left and right, montonously. Secondly, regarding the time for the performance, both of he local and foreign players took almost equal time respectively. Thirdly, in the level of degree of difficulty, while the foreign players had distributed the number of their degree of difficulty almost uniformly over their entire range of performance, the local players failed in demonstrating an equally distributed number of degree of difficulty that their last part of performance were noticed as remarkably drop down of the degree compared with that of foreign players. Based on the result of this study, the researcher would suggest that in the composition of space the local team of players will require a well diversified space motion rather than concentration in straght motion though they have had displayed a colorful dancing performance by using the four aspects of the stage. Regarding the time of performance, their dancing performance may be carried on in a consideration of well proportionated physical strength and effective allocation of the given time. Lastly, in regard with the number of degree of representation of artistic sentiment by performing an accurate degree of difficulty by equal distribution of the number of degree of difficulty over the ensure works.

성인병에 대한 한방치료법(증치의학과 사상의학)에 관한 연구 : 고혈압에 대한 한방치료법(중치의학과 사상의학)에 관한 연구

박동일,김영균,안창범,이인선,김종원,권정남,장경전,이인선,이성근,장용우,신영민 동의대학교 한의학연구소 1999 동의한의연구 Vol.3 No.-

We had a result of the treatment as below when is devided Korean medicine Tx.. Western medical Tx., Cooperative Tx.. 1) At the improvement of BP control, an average in Korean medicine Tx. (from 170㎜Hg/100㎜Hg to 150㎜Hg/90㎜Hg), an average in Western medical Tr. (from 170㎜Hg/100㎜Hg to 130㎜Hg/80㎜Hg), an average in Cooperative Tx.(from 180㎜Hg/110㎜Hg to 130㎜Hg/90㎜Hg), generally all pars had improvements of BP control. But it is not significant of each case. 2) At the improvement of symptoms by the apologetics, Cooperative Tx. is profitable in cases of 'GanHwa',' DamEum', 'EumYangYangHer', 'EumHer'. Korean medicine Tx. is superior in case of 'GiChe'. 3) At the improvement of symptoms by a questionnaire, Korean medical Tx., Western medical Tx., Cooperative Tx. groups had improvements, but each practice group didn't have specific significance. Only it was somewhat profitable to Korean medical Tx. in the 210㎜Hg/110㎜Hg, Western medical Tx. in the 180㎜Hg/110㎜Hg, Cooperative Tx, in the 170㎜Hg/90㎜ Hg. 4) There are the apparent improvements in patients whose BP are over 200㎜Hg of Korean medical Tx. group, whose BP are over 190㎜Hg of Western medical Tx. group and whose BP are over 170㎜Mg of Cooperative Tx. group. There are the improvement of diastolic BP in 110㎜Mg(Korean medical Tx., Western medical Tx.) and 90㎜Hg(Cooperative Tx.). 5) At the improvement of Pulse pressure, generally Pulse pressure are decreased. There are similar improvements in all of Korean medical Tx., Western medical Tx., and Cooperative Tx.. 6) At the Symptomatic approvement according to ages, Korean medical Tx., Cooperative Tx. are somewhat good for his twentieth, and Western medical Tx. is somewhat good for his forties. 7) the correlation of Obesity-grade and BP, as Obesity-grade is higher as BP is higher, but there are no similarity in the improvement. 8) At the EAV improvements, as examination into correlation with the point of 1~3th, we could get results as below. There are high improvements of DRHTM, DRALM, DLLYM, DLLIM in Cooperative Tx. There are high improvements of DRPASI, DLLARI in the Korean medical Tx. group. There are high improvements of DRFADM in Western medical Tx. group.

고속 퓨리에 변환을 이용한 지문의 분류

박신재,이정문,권용호 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-

Classification of fingerprints is one of the major subjects on which many researchers have been studying for efficient identification, But fingerprints should be preprocessed in various ways prior to being classified. Factors such as the accuracy and the processing time should be considered in classified. Factors such as the accuracy and the processing time should be considered in classification of fingerprints. In this paper, we propose a method for classifying fingerprints into several frequent patterns. This method consists of two stages. A fingerprint image is first converted to a skeleton form to find out the center. Then it is identified as a member of one of preclassified pattern by the frequency domain feature. Experiments show that the proposed method is quite useful in classifying fingerprints into typical patterns

분광 엘립소메트리의 응용을 위한 0차 Retardation Plate의 Alignment

이용달,박명규,김세덕,방경윤,안일신 한양대학교 이학기술연구소 2000 이학기술연구지 Vol.2 No.

A zero-order retarder was fabricated using two pieces of magnesium fluoride plates. In order to achieve desired zero-order retardation for specific wavelength, both the thickness of plates and the alignment of two fast axes were very important. We found that the alignment should be checked using broad band detection system for spectroscopic application, We devised alignment method by which the two fast axes lie perpendicularly to each other. The periodic oscillation feature in retardation angle versus wavelength disappeared with good alignment. We also developed calibration method to deduce the retardation angle over a wider spectral range using rotating compensator ellipsometer. 두 조각의 마그네슘 플로라이드 판을 이용한 0차 retarder를 제작하였다. 특정한 파장에 대하여 원하는 0차 retardation을 얻기 위해서는 판의 두께와 alignment가 매우 중요하였다. 분광학적인 응용을 위해서는 넓은 파장 영역을 측정할 수 있는 detection system의 사용이 필요하였다. 이를 이용하여 두 판의 fast axes가 서로 수직으로 놓이게 할 수 있는 alignment 방법을 개발하였다. 파장에 대한 retardation 각도에서의 주기적인 진동의 모양은 alignment를 잘하게 되면 사라지게 된다. 또한 rotating compensator ellipsometer를 사용 할 때 넓은 분광영역에 걸친 retardation angle을 측정해 낼 수 있는 calibration 방법을 개발하였다.

자동차 차체 다점용접부의 면외변위측정에 관한 연구

차용훈,성백섭,이연신,박영문,김충환 朝鮮大學校 機械技術硏究所 2002 機械技術硏究 Vol.5 No.1

The very few non-contact method are still in the early stage. One of the non-contact methods is by the use of the laser that has high-level of the accuracy for the measurement, and this laser also has excellent characteristics on which many studies for its applications are focused throughout the many fields. The dissertation is on the measurement of the strain caused by the characteristics of the spot welded zone which is used with 3-D ESPI system that is functionally modified through the laser ESPI(Electronic Speckle Pattern Interferometry) system. This system employed the SGCC 1.2t which are mainly used for the steel plate such as automobile, structure, electronics instrument, building material and electronic appliances.

비닐 조각 섞은 모래의 剪斷强度와 變形 特性

金榮信,朴鎔遠 명지대학교 공학기술연구소 1991 공학기술연구소 논문집 Vol.6 No.-

Every industrialized country has environmental problems due to the tremendous amount of industrial, agricultural and home wastes. Polymeric material wastes such as polyethelene, polypropylene, polyvinyl and polyester are growing rapidly in volume and most of them are not disposed properly. Using the polymer wastes as construction material is expected to be a way to mitigate the wastes disposal problem. This paper performes triaxial tests on sand samples mixed with polyethylene film cuttings measuring the effects of admixture on the shear strength and deformation characteristics of sand. The KS standard sand and two kinds of polyethylene film square(0.5×0.5mm) cuttings(0.1 and 0.2mm thickness) are used for test samples. Mixing rates of PEF 5 and 8% by weight are used. The results show that a proper amount of PEF mixed in sand increases the angle of shear resistance and brings a small cohesion intercept. The ductility of PEF mixed sand becomes larger than that of pure sand. Though the tests performed in this study are not much, it shows the possibility of using polymer wastes as construction material.

용접판재의 피로강도에 미치는 잔류응력 평가

차용훈,김덕중,이연신,채경수,성백섭,박회식 조선대학교 동력자원연구소 1997 動力資源硏究所誌 Vol.19 No.1

The objective of this thesis is to investigate the influence of the initial residual stress on the fatigue crack growth after the distribution of the initial residual stress is measured when the crack is growing from the compressive residual stress to the tensile residual stress field. In the case of as welded material, respective of load ratio, the span of the fatigue is the shortest in base metal, while in weld metal and HAZ, the crack growth was retarded due to the effect of the compressive residual stress at the crack tip as well as the span of the crack is longer than base metal. In region II that is in stable growth state of the fatigue crack, da/dN=C(ΔK)^m of power law was satisfied. Also, it was considered that the value of m is not affected by residual stress. Superimposing welding residual stress intensity factor K_res on ΔK, the value of ΔK_eff calculated was lower than ΔK in the same value of da/dN, while the ΔK_eff is almost the same at the high ΔK.

산화아연계 무기질과 솔잎추출물 첨가에 의한 농산물 포장 필름의 광 및 미생물 열화능 개선

한신,나현정,강용구,박찬영 전남대학교 촉매연구소 2001 觸媒硏究 論文集 Vol.22 No.-

To invent environmentally friendly materials for packaging of agricultural produce, morphological and mechanical properly changes after daylight exposure and soil deposit for LDPE films composed of different incorporation substances have been investigated. Silver coated ceramic, zinc oxide, fine particle of ferrofluid and pine needle's extract were the incorporated substances. The pine needle's film degrades fast in soil while the silver coated ceramic's film shows daylight decay more on the morphological view. The mechanical strength keeps almost same. But turndown of elongation is explicit on the pine needle's film and silver coated ceramic's film.

공업고등학교 전기학과의 전기수학교육에 관한 연구

이상석,신용철,김민회,박찬규,이재용 영남이공대학 2004 論文集 Vol.33 No.-

This research is that concern in electrical mathematics education of Technical high school Department of Electricity in the 7th educational curriculum. In the 7th educational curriculum, indicated problem about mathematics education of Technical high school Department of Electricity and examine major subject, contents of mathematics that use in major subject and analyzed contents of mathematics that must supplement. With this analysis, established necessary electrical mathematics contents for major subject studying of Technical high school Department of Electricity.