• 대한간호학회지
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• 제37권6호
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• pp.844-854
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• 2007

Purpose: This study was to verify the effect of muscle strengthening exercises using a Thera-Band on the lower limbs. Methods: The design utilized for this study was a nonequivalent control group pretest-posttest design. A control group (16) and experimental group (16) were selected from stroke patients of K Oriental Medicine Hospital who were hospitalized for 5 months from December 2005 through April 2006. While only acupuncture therapy and physical therapy were used on the control group, acupuncture, physical therapy and additional muscle strengthening exercises using a red thera band were used on the experimental group. Muscle strengthening was performed 20 minutes per session, more than one session a day for 4 weeks. Hypotheses for this study were verified using Two-way repeated ANOVA and ANCOVA using a pre test score as a covariate. Results: The experimental group with thera band muscle strengthening exercises showed a decrease in asymmetry weight loading percentage(F=14.704, P= .010), range of knee (Z=-3.15, P= .001) & deep tendon reflex score(Z=-2.52, P= .012) and moving performance(F=12.328, P= .001)compared to the control group. Conclusion: It is confirmed that muscle strengthening exercises using a Thera-Band can be used as an effective nursing intervention to improve the function of the lower limb of hemiplegic stroke patients.

• 한국동물생명공학회지
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• 제34권3호
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• pp.166-172
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• 2019

Heart rate is a relatively simple and non-invasive method that is used as an important physiological indicator in many studies and has a close relationship with heart structure and function, cardiovascular disease and sudden cardiac death. In general, appropriately low heart rate during resting means effective heart function and cardiovascular fitness; heart rate at recovery is an important indicator of health and disease condition. We found a beagle dog (Dog_1) with a high heart rate in the previous preliminary experiment. Therefore, purpose of this study was to compare the heart rate response of the Dog_1 with the control group during 12 weeks of interval exercise, to evaluate the structural and functional abnormalities of the heart and to verify the applicability of exercise program. Heart rate was checked during 12 weeks of interval exercise, and after the exercise was over, imaging examination and hematological and serum biochemistry were performed. As a result, Dog_1 (165.6 ± 1.5) showed significantly higher heart rate in low intensity session of interval exercise than control group (133.3 ± 0.5, p < 0.01). In addition, Dog_1 (181.2 ± 1.4) showed significantly higher heart rate than control group (155.1 ± 0.9) in high intensity session (p < 0.01). The heart rate (30 sec, 60 sec) during recovery state was higher in Dog_1 (30 sec: 156.8 ± 4.0, 60 sec: 166.8 ± 5.8) than in the control group (30 sec: 111.2 ± 2.5, 60 sec: 104.0 ± 5.1, p < 0.01). The results of the imaging examination of Dog_1 with high heart rate confirmed that the heart had no functional and structural abnormalities. All beagles with the interval exercise program did not show maladjustment, and in the hematological and serum biochemistry results, all the parameter were within the reference range. If the interval exercise program of this study is used in the future, it is expected to be used as an important basic data to achieve the purpose of health, welfare, and physical fitness improvement of dogs.

• 한국콘텐츠학회논문지
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• 제14권7호
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• pp.10-17
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• 2014

컨퍼런스 서비스에서 컨퍼런스 세션의 설정 및 유지 기능을 제공하는 포커스는 참가자 수가 증가 할수록 부하가 커지며 이는 대규모 컨퍼런스 서비스의 확장성을 제한하는 주요 요소가 된다. 본 논문에서는 이와같은 문제점을 해결하기 위하여 포커스의 부하를 여러 컨퍼런스 노드로 분산 시켜 대규모 컨퍼런스 서비스의 구현을 용이하게 하는 새로운 분산 포커스 제어 방식을 제안하였다. 여기서 컨퍼런스 노드들 중 포커스 기능을 가진 노드는 자신의 정보를 컨퍼런스 서버의 컨퍼런스 정보 데이터베이스에 등록하며 시스템 전체 컨퍼런스 참가자 수의 증감에 따라서 필요한 포커스가 능동적으로 할당되어 참가자의 처리를 담당한다. 이를 위하여 본 논문에서는 분산 포커스 제어를 위한 컨퍼런스 제어 이벤트 패키지가 제시되었고 아울러 포커스와 컨퍼런스 참가자들 사이의 SIP 메시지 교환 절차도 함께 제시되었다. 제안된 시스템의 성능은 시뮬레이션 실험을 통하여 분석하였다.

• 대한간호학회지
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• 제29권6호
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• pp.1273-1283
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• 1999

This study was done to explore the effects of dance therapy on pulmonary and cognitive functions in the elderly. The design of this study was a non-equivalent pre-post test experiment. The subjects consisted of elderly persons living in a facility located in Kyoungi-Do. Fifty eight subjects had normal cognition, sensory function and resting blood pressure. They underwent tests of pulmonary and cognitive function as baseline data before dance therapy, and at 6th week and at the end of 12nd week after following dance therapy. Twenty seven elderly persons were assigned to the experimental group and participated with the dance therapy. This therapy was based on the Marian Chace's dance therapy and Korean traditional dance with music. The dance therapy consisted of 50 minutes session, 3 times a week for 12 weeks. One session consisted of warming-up, expression, catharsis, sharing and closing stage. the intensity of the dance therapy was at the 40% of age-adjusted maximum heart rates. Data were analyzed with mean, standard deviation, Chi-square test, unpaired t-test, repeated measures ANOVA, and Bonferroni multiple regression using SAS program. The results were as follows : 1. Pulmonary function(forced expiratory volume at one second and forced vital capacity) of the experimental subjects significantly increased over time more than that of the control subjects. 2. The experimental group had significantly higher score for pulmonary function than the control group at the 12nd week after dance therapy. 3. Cognitive function of the experimental subjects significantly increased over time more than that of the control subjects. 4. The experimental group had significantly higher score for cognitive function than the control group at the 6th week and 12nd week after dance therapy. The findings showed the dance therapy could be effective in improving the pulmonary and cognitive function of the elderly.

• 한국콘텐츠학회논문지
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• 제15권5호
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• pp.27-35
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• 2015

스마트 기기 사용자의 증가와 통신 기술 발전으로 시간과 장소에 제약 없이 업무환경에 대한 영역이 확대되고 있다. 사용자 개인의 장비를 활용하여 업무에 도입되어지고 있으며, 이를 BYOD(Bring Your On Device)라고 한다. 하지만 기존의 무선 환경에서 발생하고 있는 보안위협에 취약하며, 기업 내부에 의한 중요 정보 유출, 사용자 부주의로 인한 단말기 분실/도난 등으로 인하여 보안취약점이 이슈화 되고 있다. 그러므로 본 논문에서는 BYOD환경에서 사용자 정보 기반으로 세션 키를 생성하여 사용자 권한에 따른 접근 제어 프로토콜에 관하여 연구하였다. 사용자 정보 및 사용자 기기 정보를 기반으로 세션 키를 생성하였으며, 이후 접근제어 프로토콜을 설계하였다. 제안하는 프로토콜은 BYOD 환경 및 무선 랜 환경에서 발생할 수 있는 공격으로부터 보호할 수 있고, 사용자 권한을 관리하여 기업 내부의 중요 콘텐츠 유출로부터 보안 요구사항과 안전성을 강화하였다.

• 공학교육연구
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• 제10권3호
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• pp.79-92
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• 2007

본 연구에서는 학습과정에 우수성, 유효성, 그리고 경제적인 효율성을 향상시키기 위해 웹기반 가상실험실과 웹기반 원격실험실을 적절하게 통합한 하이브리드 공학실험시스템을 개발하였다. 먼저 클라이언트/서버 분산환경을 설계하여 디지털 시스템과 전기전자회로 실험에 대한 웹기반 가상실험시스템을 개발하였다. 제안된 가상실험시스템은 개념학습세션, 가상실험세션, 평가세션등의 3개의 주요한 세션과 이들 주요세션을 유기적으로 통합하여 학습효율의 극대화를 달성하기 위한 관리시스템으로 구성되어 있다. 다음으로 본 연구에서는 가상실험세션 동안에 발생할 수 있는 현실감의 부족을 해결하기 위해 전기/전자회로를 실험할 수 있는 웹기반 원격 실험실을 구현하였다. 더욱이 간결하고 사용자가 친근하게 접근할 수 있는 설계기법을 사용하였기 때문에 많은 사용자들이 쉽게 원격실험실에 접속할 수 있으며, 고가의 실험장비가 실제 실험실에 구비되어 있지 않더라도 자기주도의 심화학습이 가능하다. 제안된 가상/원격실험시스템은 독립적으로 사용될 수도 있으나 학습효율을 향상시키기 위해서 웹상에서 두 개의 시스템을 통합하여 하이브리드 공학실험시스템을 개발하였다. 제안된 하이브리드 공학실험시스템은 학습자들에게 상호작용적인 학습환경을 제공하여 공학실험교육을 효율적으로 관리하는 새로운 접근방식이다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 ICEIC The International Conference on Electronics Informations and Communications
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• pp.294-301
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• 2004

This paper presents a combination of optimization concept and congestion control for multicast communications to bring best benefit for the network. For different types of Internet services, there will be different utility functions and so there will be different ways to choose on how to control the congestion, especially for real time multicast traffic. Our proposed algorithm OMCC brings the first implementation experiment of utility-based Multicast Congestion Control. Simulation results show that OMCC brings better network performances in multicast session throughput while it still keeps a certain fairness of unicast and multicast sessions, and thus, provides better benefit for all network participants.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.192-193
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• 2014

업무수행자(사용자)의 역할(Role)과 데이터 사용행위에 기반한 접근 및 권한 통제가 이루어져야 한다. 중요 정보의 대량 조회 및 변경 작업은 사전 결재를 득해야 한다. 일정 시간 무행위 세션에 대해 통제를 해야 한다.

• Physical Therapy Rehabilitation Science
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• 제4권2호
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• pp.66-72
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• 2015

Objective: The aim of this study was to investigate the effect of balance training with plantar flexor stretching on ankle dorsi flexion range of motion (ROM), balance, and gait ability in stroke patients. Design: A randomized controlled pilot trial. Methods: Thirty stroke patients volunteered to participate in this study. The subjects were randomly allocated to two groups: the experimental group (n=15) received the neurodevelopment therapy plus balance training with plantar flexor stretching for 20 minutes in one session. The control group (n=15) received the same neurodevelopment therapy plus plantar flexor static stretching for 20 minutes in one session. Both groups underwent sessions four times a week, for a total of 4 weeks. Measurements included passive range of motion (PROM), active range of motion (AROM) of ankle dorsiflexion using a goniometer, timed up and go (TUG), the functional reaching test (FRT), and the 10 m walk test (10 MWT). Results: There were significant improvements in AROM and PROM of ankle dorsiflexion, TUG, and FRT scores after the intervention in the experimental group (p<0.05). However, the control group showed no statistically significant differences except for PROM of ankle dorsiflexion. The experimental group showed a significant improvement in PROM, TUG, and FRT scores compared to the control group (p<0.05). Conclusions: Balance training with plantar flexor stretching improves ankle dorsiflexion ROM and balance ability in patients with stroke. Therefore, this therapeutic intervention will be effective for rehabilitation of stroke patients in the clinical setting.

• 대한간호학회지
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• 제30권1호
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• pp.171-182
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• 2000

This study was performed to investigate the effect of kangaroo care on body weight, physiological responses and behavioral states in premature infants. The subjects were 32 premature infants, fifteen for the kangaroo care group and seventeen for the control group, who hospitalized in a neonatal intensive care unit at a university-affiliated hospital. The kangaroo care was applied 8 times during the twenty five days with 40 minutes for each session. The kangaroo care provides the skin-to-skin contact during which a premature infant wearing a diaper and a hat is placed on its mother's chest. As for the measures, body weight was measured everyday. The levels of epinephrine, norepinephrine and 17-OHCS were measured twice, before beginning the first intervention and after finishing the last intervention. While each session of the care is undergoing, such physiological responses were measured periodically as heart rate, respiration rate, oxygen saturation, core temperature and skin temperature. The results were as follows : 1. The weight gain was significantly greater in the kangaroo care group than that in the control group during the period of performing the kangaroo care. 2. No significant difference was revealed between the two groups in heart rate, respiration rate, oxygen saturation and core temperature. The kangaroo care group also showed significant increases in the skin temperature. 3. The differences in the levels of epinephrine, norepinephrine and 17-OHCS were not significant between the kangaroo care and the control groups. The level of norepinephrine in the two groups was significantly increased over time. 4. Sleep pattern changed significantly in the kangaroo group from a very restless sleep to a very quiet sleep. These results suggest that kangaroo care is an effective nursing intervention for premature infants in gaining weight, achieving stable physiological responses and facilitating a quiet sleep.