운동부하검사 시 중년여성의 유산소 체력과 혈중 젖산농도의 변화

장재훈 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5

The purpose of this study was to the Change of Exercise physical strength and Blood lactate concentration in Middle Women at Maximal Exercise test. None of them has any illness and use of any medication during the experiment. The subjects of study were 14. The experiments group were moderately trained running 3 days or more/week (G1=7) and comparisons groups 3 days under/week (G2=7). All subjects participated in Maximal Exercise test workload. All exercise test were continued until subjects stopped because of fatigue. The present study showed there VO₂max, VEmax, EX-Time in experiments group was higher than comparisons groups and there was significant difference between comparisons groups(p<.05). But there was no significant difference HRrest, HRmax, VO₂rest, VErest between comparisons groups(p>.05). The blood lactate concentration was increased during exercise, but there were no significant differences between comparisons groups(p>.05). Consequently the exercise physical strength in raised regular physical activity and frequently exercise training in the 3 days under/week. These data suggest that study about blood analysis for increasing levels of may prevent or lower coronary heart disease risk.

MATLAB을 이용한 자동차 엔진모델 설계 및 시뮬레이션

장종승,설재훈,김승철,임영도 東亞大學校 附設 情報通信硏究所 1997 情報通信硏究所論文誌 Vol.5 No.1

Detailed model of longitudinal dynamics of a typical automobile is developed. A nonlinear controller is designed for speed control of the automobile. This paper discribes the first step of a vehicle model design which designs a engine model. The design of a vehicle engine designs Matlab Simulink, and control which is compared describes characteristics be using Fuzzy and PID.

서로 다른 훈련 형태가 비만 어린이의 운동능력과 체구성비 및 혈중 지질 성분 변화에 미치는 영향

장재훈,김정규 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

This study analyzed the comparative effect of Cooper exercise and continuous aerobic exercise for 10-12-year-old children with obesity for 60 minutes daily, three times a week for 12 weeks. The selected research participants were 76 children consisted of 54 boys and 22 girls with the %fat rate over 30% and were checked for the BMI, and %fat for the obesity index and blood lipid component for TC, TG, HDL-C, LDL-C and TC/HDL before and after the program, A 12-minute running was exercised for cardiorespiratory endurance, The intensity level of HRmax 55%-65% with the Karvonen formula measured the target heart rate for the exercise, The continuous aerobic exercise was performed for 40 minutes during the main exercise, and Cooper exercise was carried out by having the research participants carry a sand bag weighing 5% of theft body weight, A two-minute dynamic break was allowed after every 12-minute exercise. The repetitive measurement value for the pre- and post-programs was analyzed for the changing factors among the groups by using the comparative t-test analysis. A significant decrease occurred between the two groups as the result of the exercise program, weight, changes in the rate of the body formation for obesity; however, no statistical significance was resulted among different exercises, Further, the LBM was increased for every group but no statistical significance was supported, All the comparative groups showed a significant increase; however, the LBM was not significantly increased according to the statistics. The change in the blood lipid component significantly decreased for both groups; but it was significantly increased for the HDL-C, For the case of the comparative group, a significant increase was resulted; while a significant drop was evidenced for the HDL-C. For the change in the cardiorespiratory endurance, statistically significant increase was observed for the continuous exercise group and the Cooper exercise group while the comparative group showed no meaningful changes. As a result, an exercise program can significantly improve the changing factors for body shape and body formation of the children with obesity, and effectively play a role for the diseases related to arteriosclerosis and coronary heart disease. No significant difference between the two exercise groups entails a necessity for a long-term program when designing an exercise program for children with obesity, rather than a short-term program according to nutrient supply and exercise mode considering the fact that they are children in grow.

IMT-2000 기지국용 이중 편파를 위한 광대역 단일 소자 안테나 설계 및 특성 개선

장원호,박주성,태재훈,이윤현 한국항행학회 2002 韓國航行學會論文誌 Vol.6 No.3

본 논문에서는 편파 다이버시티 특성을 갖는 이중 편파(Dual-Polarization)방식의 INT-2000(1.885㎓-2.17㎓)기기국용 안테나에 사용할 수 있도록 기존 Folded Dipole안테나의 특성을 개선하였다. 제작된 안테나는 PCB기판에 몰디드 다이폴 안테나 구조에 적층 형태를 갖는 마이크로 스트립 안테나로서 각 단자별 반사게수가 -20㏈ 이하, 이중 편파 구조에서 중요한 규격인 단자간 분리도는 -20㏈ 를 가지며, 이들은 전 대역에서 약 7 dBi 이상의 특성을 보였다. Design and characteristic improvement of existing folded dipole antenna is presented to adopt W-CDMA(1.885~2.170 ㎓) wideband antenna radiators. The antenna structure has +/- 45 degrees dual polarization. In order to overcome the narrow bandwidth and low gain characteristic typical of the microstrip antenna, double layered structure was employed. The antenna achieved below -20 ㏈ reflection coefficients each ports. -20 ㏈ of port isolation, above 7 dBi of gain, providing evidence that the proposed design can be used in the W-CDMA service frequency band antenna.

여자 축구선수들이 받는 스트레스 원인과 해소방법에 관한 연구

장재훈 강원대학교 체육과학연구소 2001 江原大學校附設體育科學硏究所論文集 Vol.- No.24

This research has the purpose of finding out the cause of stress which is inflicted on the women soccer players belonging to girls' high schools and women's colleges, and examining the different methods of solving their stress. To turn out reliable calculations of average and standard deviation, I used the data collected through questionnaires which are answered by the total number of 266 women soccer players (188 high school players and 78 women's college players), which is followed by the conclusion reached with the t-test for statistical verification, Among the causes of stress imposed on soccer players of the women's high schools and colleges, the most stressful low-factor is the time when they are despised by the others, the least stressful factor is the problem with the other sex. The difference of the causes of stress classified by factors reveals that the athletics performance factor is the highest for both the groups of soccer players of women's high schools and colleges. The factor with the most meaningful difference between both the groups of women soccer players is before-competition factor (girls' high school: 2.49±.69; women's college: 2.27±.72), with the meaningful difference at the level of t=2.38 p <.018, and the rest of the factors don't make any meaningful difference. The low factor of the stress-solving method which soccer players of girls' high schools and women's colleges have chosen the most is thinking the matter over and over, the low factor chosen the least by them is depending on smoking and drinking, and the difference of stress-solving methode classified by factors demonstrates that the clarification of the causes of stress is the highest factor for both the groups of soccer players of girls' high schools and women's colleges. The factor with the most meaningful difference between both the groups of women soccer players is conversation factor (girls' high school: 2.06±.78; women's college: 1.79±.64), with the meaningful difference at the level of t=2.38, p <.006, and the physical factor is the next (girls' high school: 2.04±.61, women's college: 2.25±.62), with the meaningful difference at the level of t=-2.25, p <.011, and the rest of the factors don't make any meaningful difference. Therefore, the fact that women soccer players get much of serious stress from a sense of shame tells us that we should be more careful about our words and deeds in the field service. In addition, fear of failure accts greatly as the cause of stress, which requires a preventive alternative through psychological training, Finally, it is thought that it is necessary to make athletics performance ability maximalized by making the most of healthy leisure hours.

남ㆍ여 고교 축구선수들이 받는 스트레스 원인과 해소방법에 관한 연구

장재훈,부기원 강원대학교 체육과학연구소 2001 江原大學校附設體育科學硏究所論文集 Vol.- No.24

This research has the purpose of finding out the cause of stress which is inflicted on men · women soccer players in high schools. To turn out reliable calculations of average and standard deviation, I used the data collected through questionnaires which are answered by the total number of 472 soccer players(284 men in a high school, 188 women in a high school), and the conclusion was reached with the t-test for statistical verification. Among the cause of stress imposed on soccer players of man's high schools, the most stressful low-factor is when they lost the game, while among woman's high school soccer players, it is when they are despised by the others, and the least stressful factor is the problem with the other sex. The difference of the causes of stress classified by factors reveals that the athletics performance factor is the highest for both the groups of soccer players of women's high schools and colleges. The factor with the most meaningful difference between both the groups of women soccer players is before-competition factor(girl's high school: 2.48±.68, boy's high school: 2.14±1.17), with the meaningful difference at the level of t=-3.64, p<.001, and the rest of the factor don't make any meaningful difference. The stress-mitigating method which soccer players have chosen the most is thinking the matter over and over, but the lowest chosen by them is depending on smoking and drinking. The difference of stress-relieving methods classified by factors demonstrates that the clarification of the causes of stress is the highest factor for both the groups of soccer players. The factor with the most meaningful difference between both the groups is conversation(girl's high school: 2.06±.77, boy's high school: 1.79±.76), with the meaningful difference at the level of t=-3.670, p<.001, and the compensate factor is the next(girl's high school: 2.24±.82, boy's high school: 2.04±.77), with the meaningful difference at the level of t=-2.683, p<.009, and the physical factor is(girl's high school: 2.04±.61, boy's high school: 2.17±.60), with the meaningful difference at the level of t=2.373, p<.018. Therefore, the fact that boy soccer players get much of serious stress from the result of competition tells us that we should be more careful about our words and deeds in the field service. In addition, fear of failure acts greatly as the cause of stress, which requires a preventive alternative through psychological training. Finally, it is thought that it is necessary to make athletics performance ability maximized by making the most of healthy leisure hours.

고강도 콘크리트 기둥부재의 횡보강효과 산정에 관한 연구

장일영,박훈규,송재호 金烏工科大學校 1998 論文集 Vol.19 No.-

High-strength concrete represents a rather recent development in concrete materials technology. In recent years, a considerable amount of research work has been carried out on the mechanical and structural properties of high-strength concrete. However, there has been little research on the behavior of hight-strength concrete columns laterally reinforced with square ties and subjected to compressive loading. With the addition of transverse reinforcement which lead to triaxial compressive state, ductility behavior of high-strength column member shall be increased. In this study, rational quality and quantity evaluations were made to investigate the ultimate strength and strain ductility by confinement effect of tie reinforced hight-strength concrete columns subject to uniaxial loads. Concrete failure theory at the triaxial compressive state and statistical results based on conventional experimental data were applied for this propose. Up to 185 columns, tested under monotonically increasing concentric loading, were evaluated in terms of strength and strain ductility. Analytical results show that confinement stress, maximum compressive strength, and increase of strain equations were developed with the consideration of concrete strength, yield strength, spacing, volumetric ratio, and configurations of tie reinforcement.

아메바성 대장염과 연관된 Henoch-Scho¨nlein Purpura 1예

장재현,원경준,이준,변유미,이재광,김영훈,박찬국,김만우 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Henoch-SchonIein purpura is a common form of vasculitis primarily involving the skin, the gastrointestinal tract, the joints, the kidneys, and the nervous system. The etiological investigations are essential, because triggering factors are found in approximately half the patients such as viral, bacterial and parasitic infections, drugs, toxins, systemic diseases and cancer. But it's the correlation between Henoch-SchonIein purpura and Entamoeba histolytica has been rarely reported. We report a 29-years-old woman with Henoch-SchoIein purpura complicated by the lower gastrointestinal bleeding caused by the amoebic colitis. She complained of cramping abdominal pain, lower extremity purpura and hematochezia. Cysts and trophozoites of Entamoeba histolytica were detected in her stool. Skin biopsy demonstrated the leukocytoclastic vasculitis. She was administered metronidazole 1,500㎎ a day for the treatment of amebic colitis. Her hematochezia was improved, but the abdominal pain and purpura were not. The subsequent corticosteroid therapy improved her symptoms.

우리나라에서 발생한 만성 이황화탄소(Carbon Disulfide) 중독에 관한 고찰

장성훈,최재욱 大韓産業醫學會 1991 대한직업환경의학회지 Vol.3 No.1

One of the important occupational disease is the earbon disulfide poisoning in Korea. But there had been controversies about the diagnosis of CS₂poisoning in relation to Workers Compensation. We reviewd the CS₂poisoning cases occurred in one viscose rayon factory and the diagnostic methods of CS₂poisoning in Korea. The major clinical apperance of the CS₂poisoning in Korean is CNS damage (34.3%-87.5%), PNS damage (34.2-100.0%), ophthlamoogicae abnormality (31.6-87.5%), and renal damage (23.7-50.0%). This aspect is similiar to those of Japan rather than those of Western European. Diagnostic method of CS₂poisoning in legal periodic examination has to be amended. The future study will be evaluation of health effect and early diagnostic techniques about low concentration CS₂exposure.

GMDP 신경망 알고리즘과 PID 제어기를 이용한 효율적인 PLANT 제어에 관한 연구

장진청,설재훈,장종승,추연규,임영도 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2

Adapative control theory or parameter tuning of PID controller is mainly limited in linear systems. But in this paper, using a nonlinear mapping capability of NNS, we derive a realtime tuning method of PID controller based on a Back-Propagation method of single GMDP NN. A variety of neural models, especially higher-order networks, are known to computationlly powerful for complex application. While they have advantages over traditional multilayered perceptrons, the uniformity in their network structures, learning algorithms and loop time creates practical problems. Thus this paper evaluates the capability between MLP and GMDP for performing velocity control. Backpropagation is applied to the GMDP as learning rule.