• 산업기술연구
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• 제36권
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• pp.71-76
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• 2016

In this study, we determined the precise coordinates of TBMs (Tidal Bench Marks), which used as the national reference points in coastal area of Korea, using a GPS data analysis SW for the academic and scientific applications, GAMIT/GLOBK. For accurate 3-D positioning of TBM locations, we performed the GPS point surveying according to the national surveying policy and also acquired the GPS data for 48 TBMs located in the western and southern coastal part of Korea. Considering the results of baseline analysis to each observation session obtained from GAMIT module, the baseline analysis was realized to be done precisely because the values of Normalized RMS (NRMS) were mostly less than ${\pm}0.20mm$. Before the network adjustment using GLOBK module, we evaluated the suitability of observations for each session by applying the chi-squared test (${\chi}^2$ test) to the degree of freedom in observed session. An overall distributions of ${\chi}^2$ test were less than 1.0 for all sessions, and the statistical of ${\chi}^2$ test showed the average, 0.267 with minimum and maximum value, 0.063 and 0.653, respectively. Finally, we analyzed the network adjustment for 48 TBMs to reduce the residuals of baseline analysis on each point by connecting with 42 permanent GPS stations in Korea. In the network adjustment procedure, we set up the weighted values of each permanent station to be allocated between 0.9 and 1.14, and also removed the observed points having residual exceeds 4-times of standard deviation ($4{\sigma}$).

• 근관절건강학회지
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• 제19권1호
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• pp.71-83
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• 2012

Purpose: The purpose of this study was to develop and evaluate the effects of Tai Chi Self-help program for Hemophilic Arthritis Patients. Method: A quasi-experimental design was used. The subjects were 48 patients who underwent orthopedic surgery (24 experimental group, 24 control group). The subjects of experimental group were participated in the Tai Chi self-help group program in which 16 times for 8 weeks. The program consisted of health education on hemophilia, Tai Chi exercise, and workshop and its outcomes have been evaluated on WOMAC(Western Ontario and McMaster scale), mobility, pain, fatigue, muscle strength, depression, and quality of life(SF-36). The obtained data were analyzed by using the t-test or Fisher's exact test of PASW 18.0. Results: 1) The score of WOMAC, pain, fatigue, and depression decreased significantly in the experimental group as compared to the control group. 2) The score of mobility, muscle strength, and quality of life increased significantly in the experimental group as compared to the control group. Conclusion: Considering these research results, the program could be useful to improve joint movement, strength and psychological condition for patient with hemophilic arthritis, particularly in those who underwent orthopedic surgery.

• 한국문헌정보학회지
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• 제33권3호
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• pp.145-167
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• 1999

본 연구는 효율적인 CD-ROM 네트워크 시스템 설계 및 운영을 위해 고려해야 할 요인들을 도출시켜 시스템 설계자 및 운영자에게 도움이 되는 지침을 제공하는데 목적을 두고, 국내 72개 대학도서관의 CD-ROM 네트워크 시스템 현황과 문제점을 파악하였으며, 3개 대학 64명의 실제 이용자들을 대상으로 시스템 이용행태와 시스템에 대한 만족도를 분석하였다. 또한 이용자 만족도와 시스템 운영정책, 시스템 자원, 시스템 성능 요인간의 영향관계를 밝히기 위해 $\chi^2(Chi-Square)$검증과 F검증, 회귀분석을 실시하여 이용자 만족도에 영향을 미치는 요인들을 분석하였다.

• 근관절건강학회지
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• 제21권2호
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• pp.106-113
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• 2014

Purpose: This study was conducted to examine the effects of Tai Chi on hope, dependency, and perceived health status of elderly women. Methods: The study was a nonequivalent control group pre-post test design. Forty-seven elderly women were assigned to two groups: the experimental group (n=24) and the control group (n=23). Data were collected from June 13 to July 26, 2012 and analyzed using the SPSS/WIN 14.0 version program. The intervention was provided 2 times a week for 7 weeks. Results: There were significant differences in reported hope and perceived health status between the two groups. However, the issue of dependency was not significant. Conclusion: Tai chi can be utilized as an effective intervention for hope and perceived health status of elderly women. It will be a good solution to guide successful aging in an aging society.

• 근관절건강학회지
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• 제16권1호
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• pp.26-35
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• 2009

Purpose: The purpose of this study was to investigate the effects of Tai Chi exercise program on physical fitness, pain, and self-efficacy in patients with osteoarthritis. Method: A preexperimental research design was applied to 22 subjects who dwelled at a welfare institution in C-city and agreed to participate in this study. The Tai Chi exercise was conducted with a duration of 60 minutes per session twice a week for 9 weeks. Outcome measures were physical fitness($VO_{2}max$, strength, flexibility, foot power, agility, balance), pain, and self-efficacy. Data were analyzed by descriptive statistics and paired t-test. Result: After participating in the Tai Chi exercise program, the subjects showed significant improvements in strength, agility, balance, pain and self-efficacy. But there were no significant differences in $VO_{2}max$, flexibility and foot power. Conclusion: The results showed that Tai Chi exercise would partially improve physical fitness and be effective for pain reduction and self efficacy as well. Further studies are needed to confirm the effects of Tai Chi exercise on physical fitness.

• 한국콘텐츠학회논문지
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• 제16권12호
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• pp.35-42
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• 2016

본 연구는 액션러닝을 적용한 간호과정 학습프로그램이 간호학과 학생들의 문제해결능력과 자기주도적 학습능력에 미치는 효과를 규명하기 위한 비동등성 대조군 전후설계 실험연구이다. 연구대상은 G시와 J도에 소재한 4년제 간호학과 2학년 중 실험군 53명, 대조군 52명으로 총 105명이었다. 주 2회, 4주간 프로그램을 실시하였으며 실시 전과 후에 문제해결능력과 자기주도적 학습능력를 측정하였다. 측정된 결과는 ${\chi}^2$-test와 Chi-Square test, t-test, paired t-test로 분석하였다. 연구결과 액션러닝 학습프로그램은 문제명료화, 원인분석, 대안개발, 계획/실행, 수행평가로 구성된 학습자의 문제해결능력을 증진시켰고 학습계획, 학습실행, 학습평가로 구성된 자기주도적 학습능력을 증진시켰다. 그러므로 본 연구는 학습방법으로의 액션러닝이 간호학과 학생들의 간호과정 수업을 하는데 효과적임을 파악한 점에서 연구의 의의를 지니며, 향후 간호관련 전공학문 분야의 효과적인 교수법으로 확대적용 할 수 있을 것으로 기대한다.

• Physical Therapy Rehabilitation Science
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• 제8권1호
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• pp.52-59
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• 2019

Objective: The purpose of this review was to investigate whether motor imagery training has an effect on the recovery of upper extremity function in individuals with hemiparetic stroke or not. Design: A systematic review and meta-analysis. Methods: PubMed and three other databases were searched up to December 18th, 2018 and randomized controlled trials (RCTs) evaluating motor imagery training on upper extremity function in persons with a diagnosis of hemiparetic stroke were included. This review selected the following information from each study: surname of the first author, published year, nation, population, intervention, therapeutic intensity of intervention, therapeutic comparison, outcome measures, additional therapy, summary of results, and descriptive statistics of outcome measures. Results: This review selected seventeen RCTs with 487 stroke survivors and the following intervention methods: six motor imagery training with additional therapeutic technology, two motor imagery training with additional modified constraint-induced therapy, four mirror therapy, and five motor imagery training. Ten RCTs were eligible for meta-analysis after systematic review. The motor imagery group were more effective than the control group based on the Fugl-Meyer assessment (3.43; 95% confidence interval [CI], 1.65 to 5.22; heterogeneity [$chi^2=8.03$, df=8, $I^2=0%$], test of overall effect Z=3.76; test for subgroup differences [$chi^2=2.56$, df=2, $I^2=21.8%$]) and the Action Research Arm Test (1.32; 95% CI, -8.12 to 10.76; heterogeneity [$Tau^2=70.74$, $chi^2=15.22$, df=3, $I^2=80%$], test of overall effect Z=3.76). Conclusions: The results of this review suggests that motor imagery shows positive effectiveness on improving upper extremity function in persons with hemiparetic stroke.

• 근관절건강학회지
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• 제12권2호
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• pp.155-165
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• 2005

Arthritis is one of the most common chronic degenerative joint disease in elderly. Osteoarthritis is a widespread, slowly developing disease, with a high prevalence increasing with age in women. The large joints mostly involved by the disease are the knees. But there are no treatments available that cure the underlying process of osteoarthritis diseases. Physical exercise helps in increasing cartilage nutrition and remodeling, increases the synovial blood flow, decrease swelling, and improves muscle strength. Thus, exercise has been suggested as an important nursing strategy in osteoarthritis. Purpose: The purpose of this study were to compare muscle strength between Tai-Chi exercise and aquatic exercise for women with knee osteoarthritis. Methods: A quasi-experimental study with pretest and posttest measures was used. The study subjects were those who had been enrolled in a community health center, and agreed to participate in the study for eight weeks, signed the consent form, and obtained the physicians approval. The study dropout rates were 13.2% with the final study subjects of 17 on Tai-Chi exercise, 16 on aquatic exercise program. The collected data were analyzed using SPSS for Window (version 12.0). Independent sample t-test and paired t-test was performed to compare of muscle strength for women with osteoarthritis after 8-week Tai-Chi exercise and aquatic Exercise. Results: The homogeneity tests of demographic characteristics and study variables at the pretest data revealed no significant differences between two groups. After 8-week Tai-Chi and aquatic exercise, there was significant result in pre-post test comparison on muscle strength on Tai-Chi group, but no significant in aquatic group. There were no significant differences of knee extensor (p=.078), and hand grip(p=.118) in group comparisons on muscle strengths. But there were significant differences of knee flexor(p=.024). Conclusion: Tai-chi exercise was effective in improving knee flexor. So, it seems that Tai-chi exercise may be more suitable for aquatic exercise in osteoarthritis exercise programs. Further studies with other comparisons in physical and psycho social outcomes are necessary to confirm the more effects of exercise.

• 한국문헌정보학회지
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• 제31권3호
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• pp.165-208
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• 1997

온라인 열람목록의 이용자 인터페이스 특성이 이용행태에 미치는 영향을 파악하고, 이용자에게 보다 친근한 인터페이스를 평가하여 시스템 설계의 방향을 제시하는 데에 본 연구의 목적을 두었다. 이용자 인터페이스에 있어서 뚜렷한 특성상의 차이를 보이는 두 시스템을 대상으로 하여 $2\times2$ 교차계획법으로 이용행태연구를 위한 실험연구를 수행하였다. 65명의 탐색자가 실험에 참여하였다. $2\times2$ 교차계획법에서의 이월효과와 시스템효과, $\chi^2$검증, t 검증 매크네마 검증, 최대우도법을 통한 주변대칭성 검증, 인자분석, 회귀분석, 분산분석 등의 통계기법을 검증해야 할 가설과 데이터의 성격에 따라 적절히 적용하여 분석하였다.

• 한국보건간호학회지
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• 제29권2호
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• pp.177-189
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• 2015

Purpose: The purpose of this study was to investigate bone mineral density (BMD) and risk factors related to osteopenia in community people. Methods: The subjects consisted of 145 community people. The variables of osteoporosis knowledge and preventive health promoting behavior were measured using questionnaires. BMD and BMI (body mass index) were measured. Dietary nutrients intake related to osteoporosis was measured using 24hours recall. Data analysis was performed using the SPSS 18.0 program, using mean, standard deviation, ${\chi}^2-test$, t-test, and logistic regression. Results: Eighty six people (59.3%) had an osteopenia. According to normal group and osteopenia group, there was significant difference in gender (${\chi}^2=6.72$, p=.010) and smoking (${\chi}^2=5.18$, p=.023). Predictors of osteopenia group were male (OR=2.65, CI=1.03-8.98), BMI(OR=0.86, CI=0.72-0.96). Conclusion: Health care providers must consider factors that affect osteopenia such as gender, BMI. These results suggest the need to instruct nursing activities and interventions which are beneficial for prevention of osteoporosis.