• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1993년도 한국자동제어학술회의논문집(국내학술편); Seoul National University, Seoul; 20-22 Oct. 1993
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• pp.276-280
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• 1993

An articulated, multifinger mechanical hand can carry out grasping and manipulation operations on objects of different type and shape. In this paper the architecture of the mechanical hand is presented. Joints are driven by two antagonist tendons. Strain gauges are used to derive tendon tensions, and located in the palm of the hand. Angular defection of the joints is measured by Hall effect sensors attached to the joints. A multiprocessor-based architecture for controlling the hand is illustrated.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2006년도 하계종합학술발표회 논문 초록집
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• pp.253-253
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• 2006

• 동서간호학연구지
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• 제6권1호
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• pp.37-45
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• 2001

The purpose of this study was to identify the effect of hand acupuncture for reduction of dysmenorrhea. 71 female middle school and high school students were selected as subjects from April to May 2001, among which 38 students consisted of the experimental group while 22 students were the control group by convenient assignment. The experimental group participated in hand acupuncture treatment. The experimental treatment was to puncture corresponding points(A4, A5, J1, J3, J23, H2, F7) on both the palm and back of a hand with disposable acupuncture needles and to remove needles after 20-30 minutes' recess during which the subjects reposed themselves on bed. The collected data were processed using the SPSS PC Program and analyzed using $X^2test$ and The results of this study were as follows 1. The symptoms of premenstrual syndrome have decreased, but no significant differences were statistically observed between hand-acupunctured group and non-hand acupunctured group. 2. Subjective pain degree has decreased after hand acupuncture. 3. As for objective pain degree, a significant reduction in voice change was observed between two groups. Facial expressional changes and perspiration degree reduced but showed no significant statistically changes between two groups. 4. Comfort has increased after hand acupuncture. These results suggest that the hand acupuncture therapy works effectively on easing menstrual pain and symptoms as well as partially on reducing discomfort. It is particularly efficacious for a reduction in subjective pain and facial expressional changes in positive respect. Therefore the hand acupuncture therapy can be considered as an independent nursing intervention for dysmenorrhea reduction.

• 대한전자공학회논문지TC
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• 제49권5호
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• pp.91-98
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• 2012

최근 국내외 주요 이동통신 사업자들이 본격적으로 4G 무선표준 방식인 LTE (Long Term Evolution) 서비스를 시작 하면서 LTE 방식을 지원하는 이동단말의 MIMO (Multi Input-Multi Output) OTA (Over The Air) 성능 평가 방법의 필요성이 중요해 지고 있다. 본 논문에서는 3GPP (3rd Generation Partnership Project)에서 논의되고 있는 MIMO OTA 시스템에서의 LTE 이동 단말기의 핸드 효과에 의한 안테나의 특성변화를 이론 및 실험적으로 검증하였다. 핸드 효과에 의한 LTE 이동 단말기의 성능은 MIMO OTA 시스템에서의 LTE PDSCH throughput 비교를 통해 link level에서 확인하였다.

• 한국위성정보통신학회논문지
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• 제9권1호
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• pp.102-106
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• 2014

본 논문에서는, 이중대역 안테나를 가진, 인체 거치용 단말장치 모사구조의 HAC(보청기 EMC) 지수가 실재환경으로부터 받는 영향에 대한 관찰이 이뤄진다. 첫째, 부착형 이동통신 장치에 필수적인 인접 구조를 고려한 이중대역 내장형 안테나가 설계된다. 이 설계는 모사구조의 제작을 통해 실제의 모습을 갖춘다. 둘째, 이 장치의 HAC 지수는 손에 부착하기 전과 후에 대해 모의시험 및 측정을 통해 얻어진다. 특히, 실재 장치의 전자장 모의시험 결과는 표준 측정법에 의해 타당성이 확인된다. 마지막으로, HAC 기주는 대역, 실장환경, 손(인체) 효과의 관점에서 분석된다.

• 여성건강간호학회지
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• 제16권1호
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• pp.87-94
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• 2010

Purpose: The purpose of this study was to examine the effects of a 16-week Self-help Tai Chi for Arthritis (SHTC) combined with health education for Korean American older women. Methods: This research was a designed quasiexperimental pre-posttest. Forty one women aged 55~79 were recruited 20 in SHTC group 21 in control group and, but twelve in SHTC group and thirteen in control group were left after 16 weeks. SHTC group was educated for 1 hour health education and 1hour TCA, once a week during 16 wks. Measurements for comparison were taken three times, at baseline, 8 wks and 16wks. The effect were evaluated with self-efficacy, shoulder flexibility, back flexibility, both hand grip strength and standing balance with closed eyes. Results: All variables except for left hand grip strength at baseline had significant homogeneity between both groups. After 16 weeks intervention, there was a significant interaction effect of time and group on right hand grip strength by repeated measure of ANOVA (F=3.398, p=.044). No significant interaction effects were found on self-efficacy, shoulder and back flexibility, left hand grip strength and standing balance with closed eyes. Conclusion: I can suggest this self-help Tai Chi program may be effective partially, but further research is needed to establish the best times and periods to intervene for a better effect.

• 로봇학회논문지
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• 제18권4호
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• pp.367-375
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• 2023

Most partial hand amputees experience limited wrist movement, which hinders the efficient functioning of upper limb, affecting hand-to-use coordination and the usability of the prosthetic hand. This limitation can lead to secondary musculoskeletal issues due to repetitive compensatory movement patterns. However, current partial hand prosthetic lack rotational wrist movement due to challenges in accommodating various hand shapes and limited space. In our study, we proposed a prosthetic hand with a wrist rotation module for partial hand amputees, aiming to reduce compensatory movement. To validate the proposed wrist rotation module, we conducted motion analysis during reach-to-grasp task. Furthermore, during the Jebsen-Taylor hand function test, we evaluated both the effect on upper limb movement and the usability of the prosthetic hand, comparing configurations with and without the wrist rotation module. The results showed that the prosthetic hand equipped with rotational wrist movements reduces compensatory movements and promotes efficient upper limb movement patterns. This finding highlights the value of incorporating a wrist rotation module in prosthetic hands to improve upper limb movement for partial hand amputees.

• 대한인간공학회지
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• 제32권5호
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• pp.413-420
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• 2013

Objective: The objective of this study was to compare one-hand and two-hands lowering activity in terms of biomechanical stress for the range of lowering heights from knuckle height to 10cm above floor level. Background: Even though two-hands lifting/lowering activity of manual materials handling tasks are prevalent at the industrial site, many manual materials handling tasks which require the worker to perform one-hand lifting/lowering are also very common at the industrial site and forestry and farming. Method: Eight male subjects were asked to perform lowering tasks using both a one-handed as well as a two-handed lowering technique. Trunk muscle electromyographic activity was recorded while the subjects performed the lowering tasks. This information was used as input to an EMG-assisted free-dynamic biomechanical model that predicted spinal loading in three dimensions. Results: It was shown that for the left-hand lowering tasks, the values of moment, lateral shear force, A-P shear force, and compressive force were increased by the average 6%, as the workload was increased twice from 7.5kg to 15kg. For the right-hand lowering task, these were increased by the average 17%. For the two-hands lowering tasks, these were increased by the average 14%. Conclusion: Even though the effect of workload on the biomechanical stress for both one-hand and two-hands lowering tasks is not so significant for the workload less than 15kg, it can be claimed that the biomechanical stress for one-hand lowering is greater than for two-hands lowering tasks. Therefore, it can be concluded that asymmetrical lowering posture would give greater influence on the biomechanical stress than the workload effect for one-hand lowering activity. Application: The result of this study may be used to provide guidelines of recommended safe weights for tasks involved in one-hand lowering activity.

• 임상간호연구
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• 제15권1호
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• pp.55-65
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• 2009

Purpose: The purpose of this study was to compare the 1% chlorhexidine gluconate/61% ethanol (CHG/ethanol), 45% ethanol/18% 1-propanol (ethanol/propanol) and 7.5% povidone-iodine (PVI) scrub with brush to evaluate their antimicrobial effect. Method: Utilizing repeated measures design, 9 nurses participated in the study. Glove juice sampling procedure was used to evaluate microbial hand counts before the surgical hand antisepsis, one minute after hand wash, and after the surgery. Results: Waterless rub using CHG and ethanol combination resulted in a 3.94 log reduction at 1 min and 2.78 log reduction at 3 hrs. Ethanol/propanol resulted in a 2.42 at 1 min and 2.22 at 3 hrs. The traditional scrub using PVI with brush resulted in a 0.94 at 1 min and 0.95 at 3 hrs (p=.003) and 3 hrs (p=.026) after the surgical hand antisepsis. Repeated measures ANOVA results showed that there was a statistically significant difference among group (p=.002). Duncan post hoc test result showed that the PVI was less effective (p<.05) in sterilizing microbials on hands than CHG/ethanol or ethanol/propanol. Conclusion: Both of the two alcohol-based antiseptic rubs are acceptable alternatives to the PVI with brush for surgical hand antisepsis.

• 성인간호학회지
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• 제16권2호
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• pp.256-263
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• 2004

Purpose: The purpose of this study was to identify the effect of hand moxibustion for reduction of pain during menstruation. Method: Fifteen women were selected as subjects and data collection was conducted from September to December 2003. The Visual Analogue Scale (VAS) and Digital Infrared Thermotraphic Image (DITI) were used to measure the degree of pain and body heat. Result: The results showed that there was a significant reduction of pain during menstruation when hand moxibustion was performed. Also, there were significant differences in the change of body heat. These were left hands (Z=-2.805, p=.005), right hands (Z=-2.805, p=.005) and lower abdomen (Z=-2.803, p=.005). Conclusion: It was found that hand moxibustion decreased pain during menstruation and increased body heat. Therefore, hand moxibustion may be a good method for intervention to decrease pain during menstruation.