• 전력전자학회논문지
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• 제8권4호
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• pp.328-335
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• 2003

본 논문에서는 전기자동차용 전동기/제어기를 시험하기 위한 절차를 제시하였다. 현재 전기자동차용 전동기/제어기의 시험에 관한 국제 규격은 주로 안전 운전을 위한 최소 기준치를 정의하고 있지만 상세한 시험 방법에 대해서는 기술하고 있지 않다. 시험 항목 및 방법을 개발하기 위하여 기존의 선진국 규격에 대하여 전문가들의 의견을 바탕으로 보완 작업을 수행하였다. 개발된 규격에 따라 전동기/제어기의 시험 방법을 제시하였으며 다양한 부하 장치를 사용할 경우의 시험 방법을 제시하였다. 시험 절차는 주로 전동기 제어기 조합시험에 주안점을 두었으며 부하 장치로는 전동기-발전기, 와전류형 엔진 다이나모, 교류 다이나모 등을 사용하였으며 전동기/제어기를 차량에 탑재하지 않은 상태에서 전동기/제어기의 실제 주행모드 운전 특성을 시험하기 위한 방법을 제시하였다.

• Journal of Animal Science and Technology
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• 제61권6호
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• pp.371-378
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• 2019

The purpose of this study was to investigate the effects of group combined intervention that combined animal-assisted therapy and integrated elderly play therapy on the depression, self-esteem, and emotional expression of geriatric patients residing in nursing homes. This was achieved by providing cognitive, physical, and emotional activities and social interaction at the same time. The group combined intervention method was applied to twelve elderly patients (six in the control group, six in the experimental group) aged 65 or older who live in a nursing home for the elderly in C province, from May 3, 2019 to June 21, 2019, for a total of 8 times (once a week, 50 minutes at a time). The quantitative evaluation was analyzed through SPSS 21.0 for comparison before and after the program was implemented, using the Korean version of the depression and the self-esteem scale. The qualitative evaluation compared emotional expression pre-test and post-test. The major results of the study were as follows: First, the group combined intervention was effective in reducing depression levels of the experimental group among the elderly patients. Second, it was effective in improving the self-esteem of the experimental group among the elderly patients. Third, it showed a significant difference in the emotional expression of the experimental group among the elderly patients. Therefore, it was found that group combined intervention reduces depression and improves self-esteem and emotional expression of the elderly. Based on these results, it is hoped that this study will be a cornerstone in the development of concrete programs for the benefit of elderly patients living in facilities.

• 대한물리의학회지
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• 제17권3호
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• pp.59-67
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• 2022

PURPOSE: This study examined the effectiveness of task gait exercise combined with self-observation training to provide basic clinical data by analyzing the factors that task gait exercise combined with self-observation training has on the leg muscle activity and gait improvement in stroke patients. METHODS: The subjects were assigned randomly to experimental Group I, which mediated task gait exercise combined with self-observation training, and experimental Group II, which mediated task-walking movement. They received 30-minute interventions three times a week for four weeks. The leg muscle activity and 10 m walking test (10MWT) were conducted as pre-intervention tests, and they underwent a post-test four weeks later in the same manner as the pre-test. RESULTS: A statistically significant difference was observed in all muscles and 10MWT (p < .01) in experimental group I (p < .05), while there were significant differences only in the rectus femoris, biceps femoris, and 10MWT (p < .05). In a comparison of the changes between groups, there were statistically significant differences only in the tibialis anterior, soleus muscle, and 10MWT (p < .05). CONCLUSION: Self-observation training in experimental group I was effective in increasing the leg muscle activity and improving walking speed by discovering and correcting incorrect movements and following a normal gait pattern using the ankle joint. Therefore, the task gait exercise combined with self-observation training should be introduced and actively utilized for the rapid social recovery of stroke patients.

• 대한통합의학회지
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• 제11권3호
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• pp.147-157
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• 2023

Purpose : Stroke patients exhibit considerable variations in gait patterns. Stroke patients generally show abnormal muscle tone and gait. This study was performed to evaluate the effects of treadmill gait training combined with muscle tone control technique (TM) on gait ability in patient with chronic stroke. Methods : A single-blind, randomized controlled trial was conducted with 36 patient with chronic stroke. They were randomly allocated 2 groups; treadmill gait training combined with muscle tone control technique group (TM group; n=18) and conservative treatment group (CG group; n=18). The TM group received 15 minutes muscle tone control technique and 15 minute treadmill gait training. In the conservative treatment group received 30 minutes conservative physical therapy. Each group performed 30 minutes a day 3 times a week for 8 weeks. The primary outcome gait ability were measured by gait measurement system (Optogait, Microgate, Italy) and 10 m walking test (10MWT). An independent t-test was used to statistically analyze the pre-test and pos-ttest gait ability results. Results : Both groups demonstrated significant improvement of outcome in gait ability during intervention period. TM group showed significant differences in gait ability as compared to the CG groups (p<.05). TM group showed significant differences in 10MWT as compared to the CG groups (p<.05). Our results showed that TM was more effective on gait ability in patients with chronic stroke. Conclusion : Our findings of this study confirmed that the treadmill gait training combined with muscle tone control technique provided significant improvements on gait ability in patient with chronic stroke. Therefore treadmill gait training combined with muscle tone control technique may positive influenced gait ability. This study will be able to be used as an intervention data for recovering gait ability in patients with chronic stroke.

• Natural Product Sciences
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• 제11권4호
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• pp.189-192
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• 2005

Anti-amnestic activities of Korean red ginseng (Ginseng Radix Rubra) and Crude drug-combined preparations (RGCDP-1, RGCDP-2, and RGCDP-3) were evaluated by the animal experiment. RGCDP-1 and RGCDP-2 were prepared based on Korean folk prescriptions, 'Chongmyongtang' and 'Guibitang', respectively, while RGCDP-3, by a combination of both. Among the three preparations, RGCDP-3 was found to show the most potent anti-amnestic activity as evaluated by the passive avoidance test with mice, indicating synergistic action by combined effect of RGCDP-1 and RGCDP-2.

• 설비공학논문집
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• 제13권6호
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• pp.474-481
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• 2001

Aluminum/Freon22 grooved hat pipes which have 26 axial grooves in a cross-section were manufactured and tested. The performance test was conducted by varying filling ratio and tilt angle. Operation limit, thermal resistance, overall heat transfer coefficient were investigated. The experimental result was compared with previous study which conducted in the case of a heat pipe with combined wick. The experimental result shows that thermal resistance of this heat pipe is twice smaller than that of the heat pipe with combined wick and operation limit is increased about 75%, comparing with that of heat pipe with combined wick.

• 콘크리트학회논문집
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• 제11권4호
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• pp.157-167
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• 1999

Among several non-destructive testing methods, ultrasonic pulse velocity method and rebound index method have been widely used for the evaluation of concrete strength. However, such methods might not provide accurate estimated results since factors influencing the relationship between strength and either ultrasonic pulse velocity or rebound index are not considered. In this paper, the evaluation method of concrete strength using rod-wave velocity measured by impact-resonance method is proposed. A basic equation is obtained by the linear regression of velocity vs, strength data at specific age and then, aging factor is employed in the equation to consider the difference of the increasing rate between wave velocity and strength. Strengths predicted by the proposed equation agree well with test results. Furthermore, the combined method of rod-wave velocity and rebound index is proposed.

• Nuclear Engineering and Technology
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• 제55권11호
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• pp.4146-4158
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• 2023

This paper proposes a combined plastic and creep constitutive model of A533B1 pressure vessel steel to simulate progressive deformation of nuclear pressure vessels under severe accident conditions. To develop the model, recent tensile test data covering a wide range of temperatures (from RT to 1,100 ℃) and strain rates (from 0.001%/s to 1.0%/s) was used. Comparison with experimental data confirms that the proposed combined plastic and creep model can well reflect effects of temperature and strain rate on tensile behaviour up to failure. In the companion paper (Part II), the proposed model will be used to simulate OECD lower head failure (OLHF) test data.

• 생명과학회지
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• 제21권10호
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• pp.1443-1451
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• 2011

본 연구는 규칙적으로 운동에 참여하지 않는 65세 이상의 비만 여성노인 24명을 대상으로 12주 복합운동이 비만 여성노인의 자립생활체력과 성장호르몬에 미치는 영향을 구명하기 위하여 운동 전과 운동 후의 자립생활체력 변인과 성장호르몬을 측정하여 비교분석하였다. 본 연구 결과 자립생활체력은 복합운동집단이 유의하게 증가하였고, 성장호르몬도 복합운동집단 유의하게 증가를 하였다. 이상의 결과 규칙적인 12주 복합운동이 비만 여성 노인들의 자립생활체력과 성장호르몬의 변화에 긍정적인 영향을 미친 것으로 생각되며, 향후 비만 여성노인들의 체력과 신체여건에 알맞은 효율적인 복합운동프로그램이 지속적으로 개발되고 노년기의 건강유지 및 삶의 질을 높이는데 도움을 줄 수 있는 후속 연구가 다양하게 이루어져야 할 것으로 사료된다.

• 대한통합의학회지
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• 제4권4호
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• pp.21-32
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• 2016

Purpose: The purpose of this study was to identify whether task-related circuit exercise program combined with sensorimotor training for 4 weeks could improve the balance and gait in stroke patients. Method: Fifteen stroke patients who had agreed with the study were randomly divided into 3 groups categorized as task-related circuit exercise program combined with sensorimotor training group (experimental group 1, n=5), task-related circuit exercise program group (experimental group 2, n=5), and control subjects performed conventional physical therapy (control group, n=5). The balance and gait were assessed by BT-4 force platform system, Berg Balance Scale, 10meter Walk Test and Smart Step at before training and after training. Wilcoxon signed rank test was used to analyze change before and after intervention in intra-group. Kruskal Wallis H test, Mann-Whitney U test and Bonfferoni correction were used to analyze changes of all variables in inter-groups. Result: The experimental group 1 showed significant improvements in postural sway area, BBS scores, walking velocity and plantar pressures of affected foot, whereas the experimental group 2 showed significant improvements in BBS scores, and the control group were no significantly different in all variables following training. The changes of postural sway area and BBS scores in the experimental group 1 were significantly greater than them of the control group. The changes of postural sway area in the experimental group 1 was significantly greater than that of the experimental group 2. Conclusion: The result of this study suggest the task-related circuit exercise program combined with sensorimotor training is an effective intervention to improve balance and gait in stoke patients.