• 대한기계학회논문집A
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• 제30권2호
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• pp.120-127
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• 2006

The fatigue behavior of LIPCA was so sensitive to the manufacturing condition, the environmental factors and the change of the test apparatus. Therefore, we could be considering not only the relationship between the stroke range $({\Delta}h)$ and actuating frequency but also the relationship between the stroke range $({\Delta}h)$ and the total effective moment $(M^E)$. Thus, this study proposed the calculation method of the applying $M^E$ when the $({\Delta}h)$ of LIPCA was increased from 1.mm to 20mm. To estimate the relationship between the total effective moment $(M^E)$ and the Bernoulli-Euler bending moment (M) was reviewed. And the residual stress distribution of LIPCA and THUNDER using the CLT was evaluated. In conclusions, converting the $({\Delta}h)$ of LIPCA to the radius of curvature (p) and calculating the $(M^E)$, it was found that the p by the $M^E$ changed similarly as the $({\Delta}h)$. It was found that the $M^E$ was 2.2 times as the M. While CFRP and PZT of LIPCA, which had the superior compressive characteristic, had the compressive residual stress, GFRP was subject to the tensile residual stress. Since this reversed configuration between the compressive residuals stress and the tensile one was made, the requirement of the stroke range $({\Delta}h)$ increase was satisfied.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회A
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• pp.1547-1552
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• 2008

The tip of these catheter with straight needles is not able to reach in the vicinity of the disc bulging, which are the cause of the low back pain and because the far indirect radio-frequency treatment results in the decompression, the nucleoplasty has the limit. Many incurable diseases has not been solved due to the unexistence of the advanced technique for the MIS human body catheter device. To increase the possibility of nucleoplasty, the needle tip should be located at the closest area of the lesion. For this reason, the best way to increase the success rate of the operation is that the needle tip should access 3-dimensionally to the operating field as soon as possible. To achieve this aim, our studies are restricted as follows: 1) the SMA catheter design to control the 3-dimensional direction, 2) the security of the immediate response by the positive control of the SMA element thermal distribution using Peltier thermoelectric elements, 3) the aquisition of the control data by monitoring the relationship between the temperature of SMA element and the displacement, and 4) the design of the controller to guarantee the accurate location.

• 여성건강간호학회지
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• 제9권4호
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• pp.439-448
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• 2003

Purpose: This study was accomplished to apply and to evaluate the 10-week Urinary tract Function Promotion for the Elderly Women (UFPE), and to suggest guideline and to be utilized on the community level. Method: Subjects were 30 persons of 16 healthy elderly and 14 hemiplegic elderly. This UFPE was composed of diagnosis of incontinence & evaluation of physical condition, understanding of urogenital system & urinary incontinence management. UFPE was evaluated by subjective urinary condition, intra-vaginal contraction power, continence self-efficacy (CSE), incontinence stress, geriatric depression. The collected data was analyzed using Wilcoxon Matched Signed-Ranks test by SPSS/WIN program. Result: 5 subjects (31.2%) in healthy group and 2 subjects(14.3%) in hemiplegic group have a daytime frequency, 14 subjects(87.5%) in healthy- group and 14 subjects(100%) have a nocturia. After program, subjective urinary condition was increased just only healthy elderly (Z=-2.545, p<0.05), while intra-vaginal contraction power and CSE were increased significantly only in the hemiplegic elderly (Z=-2.57, P<0.05: Z=-2.29, p<0.05). There were barriers not to comply program guidance such as inadequate perception of pelvic floor muscle, forget to do exercise, fatigue. Conclusion: UFPE was effective in increasing subjective urinary condition for healthy elderly and in increasing intra-vaginal contraction power and continence self-efficacy for the hemiplegic elderly women. I suggest that this UFPE be utilized at the health center and elderly center, and public health nurse counsel and guide the elderly's work through phone service.

• 대한한의학회지
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• 제28권2호통권70호
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• pp.205-212
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• 2007

Objectives : Combined treatment (CT) of oriental herbal medicine and prescribed drugs is now being increasingly used among cancer patients around the world. However, in Korea, clinical information on the frequency, efficacy and safety of CT among cancer patients has not yet been thoroughly reported. This study aimed to identify the status and adverse effects of CT for the management of cancer patients. Methods : A questionnaire and medical record survey by oriental medical doctors or physicians were performed at two oriental medical hospitals and one general hospital. Of the initial 400 in-patients, 368 participated in this survey, representing a response rate of 92.0%. Results : Among cancer patients in oriental medical hospitals, the proportion of CT was 45.9%. In contrast, the proportion of CT in the general hospital was only 0.6%. The proportion of CT among breast cancer patients (20) and gastric cancer patients (35) were 85.0% and 51.4%, respectively. The proportion of CT among cancer patients was high in younger, female or married patients groups. 10 respondents (11.1%) among 90 cancer patients experienced several adverse effects including nausea, fatigue, etc. Conclusions : This study suggests that many more patients in oriental medical hospitals than general hospitals use combined treatment of oriental herbal medicine and prescribed drugs for management of cancer. Therefore, medical professionals should provide comprehensive and up-to-date clinical information about potential benefits and risks of CT to cancer patients in Korea.

• 성인간호학회지
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• 제19권5호
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• pp.138-149
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• 2007

Purpose: This study was to identify the level of quality of life in patients with woman cancer across treatment phases. Methods: The research method was a cross-sectional descriptive study. Data was collected by questionnaires from 226 female, who were in- and out-patients. They were diagnosed with breast and uterine cancer from three university hospitals and two general hospitals. The instruments used for this study included, "the Quality Of Life Scale(QOL)". The collected data were analyzed using Frequency, Percentage, ANOVA, Two-Way ANOVA. Results: Quality of life of women cancer patients was significantly different according to three treatment phases. Quality of life of women cancer patients was not significantly different according to areas of disease in the three treatment phases. Quality of life of women cancer patients was significantly different according to level of fatigue in the three treatment phases. Quality of life of women cancer patients was significantly different according to level of perceived health status in the three treatment phases(F=60.14, p=0.000). Quality of life of women cancer patients was significantly different according to education level(F=3.70, p=0.027) & occupation(F=5.67, p=0.018) in three treatment phases. Conclusion: Strategies for intervention are needed to improve the quality of life in women cancer patients across the treatment phases. The significant several characteristics of affecting on quality of life across treatment phases should be considered in sociopsychological nursing intervention.

• 대한지역사회영양학회지
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• 제6권4호
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• pp.617-627
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• 2001

This study examined health foods intakes and related variables among the middle aged(150 men and 159 women) in the Jeonbuk region. Health foods were classified into 4 groups including Chinese medicine(CM), toner foods(TF), vitamin or mineral supplements(VMS), and other manufactured health food supplements(MHFS). The number of people taking health foods were higher for those in their 50's than in their 40's. The consumption rate of TF in men was the highest among health foods, this result had significance. The reasons for taking health foods were recovery from fatigue, supplement of nutrients and making smooth body activity in general, but TF was used to increase of vigor. The consumption rate of health foods was a little different according to social-economic factors, namely, the consumption rate of CM was higher in people in rural than urban areas, those who graduated from middle school than university, blue color & self-employed as opposed to housewives and service workers, low level income than high level income, and Buddhism and no religion than Christian. The consumption rate had a correlation with the habits of smoking, alcohol drinking and exercise ; namely, the consumption rate of CM was higher than VMS and MHFS on smokers and alcohol drinkers. The more the frequency of exercise, the higher the consumption rate of TF, but the duration of the exercise was not correlated. This study suggests that middle aged people need nutritional education for the right recognition and selection of health foods and to consider the nature of each type of health foods.

• 감성과학
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• 제17권2호
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• pp.111-122
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• 2014

본 연구는 지하철 로비공간을 대상으로 한 주시실험을 통해 공간정보의 본능적 시선탐색과정에서 나타나는 주시특성에 나타난 주사경로 알고리즘을 분석하였다. 주시기간 구간별 분석에서 주시시간이 오래 경과할수록 주사유형 횟수가 증가하고 있었는데, 오래 주시할수록 주시단절이 많이 일어난 것으로 해석이 가능하며, 주시에 따른 피로나 활발한 탐색이 자연스러운 공간탐색과정에서 일어나는 과정에서 화상범위를 벗어나는 경우가 많았던 것으로 보인다. 또한 시간구간의 변화에 따른 주사유형의 변화를 추세선으로 살펴본 결과, "집중"은 시간구간의 증가와 함께 가파른 증가, "대각 수직"은 완만한 증가를 보이는 반면, "순환 혼합 수평"은 감소 경향을 보이고 있다. 공간을 주시한 피험자의 주시데이터에는 다양한 시각정보가 포함되어 있는데, "주의집중"에 나타난 주사유형을 분석한 결과, 이상과 같은 의미 있는 결론을 도출할 수 있었다. 이러한 주사유형의 증감특성은 시간의 경과에 따른 주사경향을 파악함에 있어 기초자료가 될 수 있다.

• 한국소음진동공학회논문집
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• 제25권2호
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• pp.108-115
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• 2015

Electro-mechanical actuator installed on aircraft consists of a decelerator which magnifies the torque in order to rotate an axis connected with aircraft control surface, a control section which controls the motor assembly through receiving orders from cockpit and a motor assembly which rotates the decelerator. Electro-mechanical actuator controls aircraft altitude, position, landing, takeoff, etc. It is an important part of a aircraft. Aircraft maneuvering causes vibrations to electro-mechanical actuator. Vibrations may result in structural fatigue. For that reason, it is necessary to analyze the system structural safety. In order to analyze the system structural safety. It is needed reasonable finite element model and structural response stress closed to real value. In this paper, analytic model is derived by using the simplified finite element model, and damping ratio which is closely related to response stress is derived by using modal test. So, we developed analytic model in less than 10 % error rate, compared with modal test. Vibration response stress close to real value was estimated from analytic model modified with modal experimental damping ratio. Estimation method for damping ratio with empirical formula was suggested partly. Finally, It was proved that electro-mechanical actuator had reasonable structure margin of safety at environmental random $3{\sigma}$ stress during life cycle.

• 대한지역사회영양학회지
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• 제5권3호
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• pp.452-460
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• 2000

Aspects of health food intake were investigated by conducting a questionnaire survey with over 480 of adults in Taejon and the data were analyzed by $\chi$$^2$-test, t-test and ANOVA, using an SAS program. Eighty two percent of the subjects had taken some kind of health food. The health foods they took frequently were, for example, health drinks, green tea, ginseng products, dietary fiber drinks, honey, general tea, vitamin B, vitamin C, and tonic medicines. The main reason for taking health foods was recovery from fatigue and the frequency of taking health foods was one time per day. Most of the subjects took health foods without knowledge of their components or effects. When they health foods with a perceived knowledge of their components and effects, they responded that the health foods were very helpful for them. Twenty percent of subjects experienced side effects, such as diarrhea, stomachache, headache, nettle rash, and stomach cramps. Information on health foods was obtained mainly from friends or family. The user group showed higher intention to continue health food intake than non users(p < 0.001). Health foods were taken without any knowledge about them. Health food intake was significantly correlated with consideration of disease, suffering or disease, medical examination, and self-perceived health status, but not with food habits and health food knowledge. As for the results from the adults consumption pattern of health food, an education program should be developed to choose proper health foods according to the consumers dietary life and health conditions. Also a proper guide line should be established to be chosen the authorized health foods.

• 한국자동차공학회논문집
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• 제13권5호
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• pp.127-133
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• 2005

Rotary swaging is one of the incremental forming process which is a chipless process using the reduction of cross-sections of bars, tubes and wires. The TDS(Tube Drive Shaft) of monobloc used in automotive has been developed by the rotary swaging process. The mechanical characteristics of swaged parts such as the hardness, thickness and roughness are also estimated to conduct experimental analyses of rotary swaging process with the materials of 34Mn5 Furthermore the change in the vibration mode of TDS due to design parameters, which are the tube length, diameter and thickness, has been investigated and analysed. The weight of the TDS product is smaller by about $12.8\%$ than that of SDS with the same performance. It could be evidently found that the TDS is designed to be much lighter than SDS (Solid Drive Shaft). This advantage might give some possibility to improve the NVH (Noise-Vibration-Harshness) characteristics. A maximum torque and a total number of torsional repetitions for the TDS is checked and measured to know the torsional intensity and fatigue strength through the static torsion test and torsional durability test, respectively. A total number of the torsional repetitions up to the fracture for the TDS is greater than 250,000 times.