VCR用 DD캡스턴 모터의 特性 改善을 위한 設計製作 硏究

白壽鉉,任泰彬 東國大學校 1991 東國論叢 Vol.30 No.-

The DD capstan motor for VCR must be designed fast and adaptively as a small, light and slim type and have the high accuracy of control characteristic because the life cycle of its applying machinery has become shorter and it requires high accuracy of control characteristic. In this study, the design theory of the electric and magnetic parts for DD captan motor for VCR is systematized. Also the design theory and manufacturing method of MR sensor device as a speed detector is presented to enhance the accuracy of speed control, and the flux density of permanent magnet is made uniformly so as to magnetize the super multi-poles and as that result the FG with a high output and high accuracy can be designed and manufactured, which has 0.2% maximum fluctuation of the frequency and -60 dB minimum ratio of S/N. Applying these results to the design of DD capstan motor for VCR, the excellency of this can be proved.

초임계이산화탄소에 의한 유기염소계 잔류농약의 포집효율

임상빈,좌미경,김수현 濟州大學校 産業技術硏究所 1996 산업기술연구소논문집 Vol.7 No.1

Collection efficiencies of organochlorine pesticides by supercritical fluid extraction(SFE) was investigated to develop a simple, fast and inexpensive extraction method. Standard organochlorine pesticides mixture(SOPM, no water) showed no evidence of metering valve plugging in contrast to the plugging associated with SFE of fish tissues(wet sample). Maximum percent recovery of SOPM was obtained at bar by collecting the extract within 3 min through the metering valve without heating into a capped screw-top tube half filled with solid CO_(2) Recovery of SOPM itself shwes 98.3% while recovery of that spiker in fish tissue 85.6%.

競技種目別 運動選手들의 筋力에 관한 硏究

박철빈,송종국,박수연,박찬호 경희대학교 체육과학연구소 1996 體育學論文集 Vol.24 No.-

The purpose of this study was to estimate physique and muscular strength in collegiate athletes. On a sample of 70 athletes (basketball, baseball, soccer, and ice-hockey) anthropometric measurements (height, weight, bone width, circumference and skinfold thicknesses) were taken, For the measurements of muscular strength grip strength, back strength, arm flexion and leg extension strength were tested. The results of this study showed that basketball players were highest for height, weight, humorous and femur diameters, chest circumference, and calf circumference. Ice-hockey players were highest for upper arm and flexed upper arm circumferences. On the other hand ice-hockey players were lowest for height, soccer players for weight, baseball players for humerous and femur diameters, soccer players for chest circumference. For skinfold thickness baseball players (10.1mm) were highest for triceps, basketball players (14.5mm) for subscapular, ice-hockey players (13.3mm) for suprailiac and medial calf (9.0mm) skinfold thicknesses. While soccer players were lowest for triceps (8.7mm), subscapular (8.6mm), suprailiac (9.8mm) and medial calf (7.5mm) skinfold thicknesses. There were significant differences (P〈0.01) for height, weight, femur diameter, upper arm and flexed upper arm circumferences among athletes. Grip strength (left and right) was highest in baseball players (52.1kg, 50.8kg) but lowest for soccer players (42.3kg, 42.8kg). Baseball players were highest for back strength (162.0kg). On the other hand back strength was lowest in ice-hockey players (127.1kg). For arm flexion and leg extension strength (left, right) basketball players (42.0kg, 44.9kg) were highest for both strength tests. While soccer players were lowest for arm flexion strength and baseball players for leg extension strength. Ice-hockey players were highest for sit-up (59.2). Significant differences (P〈0.01) were found for grip, back, arm flexion and leg extension strength and sit-up among athletes.

수정봉(충청남도)의 식물상

임수진,이웅빈 용인대학교 자연과학연구소 2009 自然科學硏究所論文誌 Vol.14 No.1

The investigated area is located 36° 44′ 50″∼36° 46′ 40″ N in latitude at 126° 36′ 20″∼126° 37′ 40″ E in longitude. The investigated vascular plants consist of total 126 taxa: 3 forms, 21 varieties, 102 species, 90 genera, 46 families, 25 orders, 4 classes. 6 special plants designated by Ministry of Environment were investigated: 4th grade for 2 taxa, 3rd grade for 2 taxa, 2nd grade for 2 taxa. There is two taxa korean endemic plant that is Lespedeza thunbergii var. intermedia (Nak.) T. Lee, Saussurea eriophylla Nakai. As for the useful plants, there were 72 taxa of edible ones(57.1%), 59 taxa of medicinal ones(46.8%), 20 taxa of ornamental ones(15.9%), 50 taxa of industrial ones(39.7%), and 2 taxa of poisonous ones(1.6%). Naturalized plants were distributed 4 taxa.

분산중합을 이용한 Poly(MMA-co-2-HEMA)의 고 고분자량의 합성 및 특성 연구

임수빈,현수용,한병학,김형중 公州大學校 工學硏究院 生産技術硏究所 2004 論文集 Vol.12 No.-

Poly[methyl methacrylate(MMA)-co-2-hydroxyethyl methacrylate(2-HEMA)] particles were synthesized by dispersion polymerization in a cyclic hydrocarbon medium. The reactions were carried out at 72~80℃ in the presence of SIS block copolymer and t-butyl peroxy-2-ethyl hexanoate, as steric stabilizer and initiator, respectively. The used cyclic hydrocarbon medium were cyclohexane and methyl cyclohexane. The resulting poly(MMA/2-HEMA) latexes were found to be monodisperse particle diameter of 2~3㎛. Dispersion polymerization of poly(MMA/2-HEMA) were carried out to investigate the effect of concentration of initiator. The molecular weight of poly(MMA/2-HEMA) in presence of methyl cyclohexane than cyclohexane was increased.

운동수행시 혈청효소 변화 분석

박철빈,이상민,박수연 경희대학교 체육과학연구소 2000 體育學論文集 Vol.28 No.-

This study aim to compare the effects of acute physical exercise on the serum enzyme, Creatine phosphokinase(CPK), Lactate dehydrgenaes(LDH), glutamic axaloacetic transaminase(GOT) and glutamic pyruvic transaminase(GPT) in two groups of Body Mass Index. The subject was divided two groups of 8 normal(BMI〈23) and 8 obesity (BMI〉30). The exercise consisted of running on a mater driven-treadmill until the subject reached exhaust. Blood sample were drawn from the antecubital vein before, immediately after exercise, postexercise 30 minute and postexercise 60 minute. Serum enzyme activity increase immediately after exercise the end of the tradmill test in the both groups for CPK(24.5%), LDH(15.3%), GOT(39.0%), and GPT(20.6%), and gradually decrease postexercise 60 minute to approximately to base activity. The serum enzyme activity significantly different between normal and obesity groups in before exercise of CPK(40.8%), LDH(14.7%), GOT(27.&%), and GPT(72.4%)(p〈0.05), and the immediately after exercise activity nonsignificantly different for CPK(29.0%), LDH(2.9%), GOT(8.1%), but GPT is significantly different(p〈0.05). It is concluded from this study that serum enzyme activity rise after exercise and recover to the base activity after postexercise 30 and 60 minute. It is indicate that sarum enzyme release to blood from skeletal muscle, tissue and organ. Obesity group's serum enzyme activity more higher than normal group is important pathological examination especially GOT, GPT.

커패시터 放電 임펄스 着磁機의 컴퓨터 모델링 및 着磁요크의 磁界解析

白壽鉉,任泰彬,金必洙 東國大學校 1992 東國論叢 Vol.31 No.-

In a capacitor-discharge impulse magnetizer, a magnet is magnetized by the discharging current of capacitors. The conventional design of the magnetizer has been based on many year's experience. The behaviour of flux in the magnetizer should be calculated in order to produce the desired magnets. The analysis of the flux distribution in quite difficult. This is because both the magnetizing current and the applied voltage to the magnetizer are unknown. This paper describes the development of a computer model for a circuit of capacitor-discharge impulse magnetizer using SPICE. Also, the detailed distribution of the flux density in two applied type magnet magnetized by the impulse magnetizer be analyed.

사업장 소음 폭로에 의한 일과성 역치 상승과 회복

조수헌,하미나,한상환,주영수,성주헌,강종원,윤덕로,송동빈,이명학,김선태 大韓産業醫學會 1996 대한직업환경의학회지 Vol.8 No.2

To determine the recovery time from noise-induced temporary threshold shift(TTS), a prospective field study was conducted at three worksites where workers are known to be exposed high level of noise. Subjects were selected according to answers on a questionnaire which inquired about otological history and previous noise exposure, including avocational, military and occupational exposures. After excluding employee with past otologic problems, recent exposure to high level noise, and under medications, total 92 employees participated in the study. Among 92 participants, complete consecutive audiometric examinations were carried out at 0∼2 hours, 5∼7 hours, 14∼16 hours after worktime noise exposure on 26 participants wearing hearing protectors and 22 participants wearing no protective devices. The difference between the hearing level 0∼2 hours after noise exposure and 5∼7 hours is statistically significant by paired t-test(p<0.01). The median recovery times calculated from the data of 22 participants wearing no protective hearing devices are 15.6 hours at 4000Hz, and 7.7 hours, 10.3 hours, 8.4 hours at 1000Hz, 2000Hz and 8000Hz respectively. These data suggest that when measuring the pure tone audiometry for noise exposed workers, at least 16 hours noise-free interval is required.

발레專攻學生들의 等速性 筋力에 關한 硏究

문치빈,박수연,박철빈 경희대학교 체육과학연구소 1997 體育學論文集 Vol.25 No.-

It has reached the results as follows to measure the isometric muscle power on 42 ballet-major women college students and 42 general college women inorder to find the isometric muscle power of the ballet-major students. 1)The peak torque of the average femoral flexors of ballot-maior women college students was found to be 37.7±7.70 in 60°·S-1 of angular velocity. to be 30.29±6.52 in 180˚·S-1, and 23.39±8.06 in 300˚·S-1. In the case of the femoral extensors, the one was shown to be 71.86±9.44 in 60˚·S-1. to be 78.29± 10.44 in 180˚·S-1. and 39.86±8.78 in 300˚·S-1. 2)For general women-college student, the peak torque of the avcrage frmoral flexorswas found to be 38.1±6.31 in 60˚·S-1 of angular velocity, to be 28.00±5.51 in 780˚·S-1. and 21.86±5.43 in 300˚·S-1. high-speed angular velocity, The femoral extensors was 78.29± 10.44 in 60˚·S-1, to be 51.14±7.97 in 180˚·S-1, and 36.86±8.78 in 300˚·S-1. 3)The meaningfulness on the isometric femoral flexors of 60˚·S-1 (P>0.64), 180˚·S-1 (P>0.69), and 300˚·S-1(P>0.36), and In the femoral extensors. the one was 60˚·S-1(P>0.0.81). 180˚·S-1(P>0.49). and 300˚·S-1(P>0.61). there was no statistical meaningfulness, either. 4)In connection will % body weight, the peak torque of the isometric femoral flexors of ballet-major women college students was found to be 34.29±7.13 in 60˚·S-1 of angular velocity, to be 27.47±6.37 in 180˚·S-1, and 21.14±7.84 in 300˚·S-1, while in the femoral extensors 60˚·S-1 of angular velocity was 65.57±9.95, 180˚·S-1 was 42.29±7.97, and 36.86±8.78 300˚·S-1. 5)The femoral flexors of % peak torque of general women college students was found to be 33.57±3.87 in 60˚·S-1 of angular velocity, 24.71±4.07 in 170˚·S-1, and 19.14±4.81 in 300˚·S-1. The femoral extensors resulted in 69.71±7.25 in 60˚·S-1,45.29±6.05 in 180˚·S-1, and 35.14±7.27 in 300˚·S-1. 6)In connection with % body weight, the statistical meaningfulness of the isometric femoral flexors was found to be 60˚·S-1 of angular velocity(P>0.16). 180˚·S-1 (P>0.29), 300˚·S-1(P>0.25), and there was no it. The femoral extensors was 60˚·S-1 of angular velocity(P>0.47), 180˚·S-1 (P>0.97). and 300˚·S-1 (P>0.80), there was no statistical meaningfulness, either. 7)In case ballet-major women college students. the ratio between the femoral flexors and extensors showed 50% of range in 60˚·S-1. 61% in 180˚·S-1 and 66% in 300˚·S-1, while in case of general college women it showed 49% in 60˚·S-1.55% in 180˚·S-1 and 55% in 300˚·S-1.

소봉제품의 시장생산 모형 구축에 관한 연구

김수홍,유정빈 한국경영과학회 1996 한국경영과학회 학술대회논문집 Vol.- No.2

소봉제품에 대한 시장생산 모형을 만들기 위하여 과거 자료에서 마련된 수량화된 기초 자료를 통계적으로 분석하고 미래의 생산량을 예측하였다. 출고량에 의한 기초 자료의 통계분석 결과에서 여러 가지 계량적 시계열 분석 방법들 중 STEPAR 방법에 의한 예측 방법이 가장 우수한 것으로 나타났다. 통계분석의 결과로 나타난 출고량에 대한 예측값은 생산량을 결정하는데 있어서 매우 중요한 정보이다. 각 소봉제품들에 대해서 미래의 생산량에 대한 예측값을 STEPAR방법에 의하여 얻었다. 이 예측값들의 95% 신뢰 구간의 폭이 상당히 넓게 나왔다. 이를 개선하기 위하여 체계적인 데이터 베이스 시스템을 구축하고, 수요-생산-재고의 종합적인 관리를 하며, 이를 뒷받침하기 위한 통합 전산 시스템을 구축해야 할 것이다. A forecast on the past output data sets of small bar steels is very important information to make a decision on the future production quantities. In many cases, however, it has been mainly determined by experience (or rule of thumb). In this paper, past basic data sets of each small bar steels are statistically analyzed some graphical and statistical forecasting methods. This work is mainly done by SAS. Among various quantitative forecasting methods in SAS, STEPAR forecasting method was best performed to the above data sets. By the method, the future production quantities of each small bar steels are forecasted. As a result of this statistical analysis, 95% confidence intervals for future forecast quantities are very wide. To improve this problem, a suitable systematic database system, integrated management system of demand-production-inventory and integrated computer system should be required.