• Educational Technology International
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• v.19 no.1
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• pp.123-151
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• 2018

This study aims to examine the effects of self-directed learning readiness (SDLR) on academic performance and the perceived usefulness for each elements of flipped learning. Based on their SDLR scores, 69 students were assigned to a high SDLR group and a low SDLR group. Academic performance was measured by the completion rate of a pre-class online learning and the final exam score, and perceived usefulness for each element of flipped learning was measured by a survey designed by the researcher. For academic performance, the high SDLR group showed a significantly higher completion rate than the low SDLR group, but no significant difference was observed in their final exam scores. Students in the high SDLR group perceived in-class student-centered activities as more useful than those in the low SDLR group. Additional qualitative analyses indicated that students needed more support from instructors and well-prepared peers. Finally, this study suggested that more examination on the various learning characteristics that may influence the effectiveness of flipped learning should be done.

• The Journal of Korean Physical Therapy
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• v.23 no.3
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• pp.71-77
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• 2011

Purpose: In this study, we tried to determine the effect of upper extremity training such as functional reaching on improved trunk control and ADL performance in post-stroke hemiplegic patients. Methods: We randomly selected 11 stroke patients in the hospital, who had a problem with the upper extremity, trunk and ADL performance. The patients were divided into the conservative training group and the functional reaching training group. We applied general occupational therapy only in the conservative training group whereas we applied upper extremity training with a focus on functional reaching in the functional reaching training group. To compare the two groups we used several assessment tools such as Modified Barthel Index (MBI), total Trunk Impairment Scale (TIS), static TIS, dynamic TIS and coordinative TIS. Results: The results obtained were as follows: (1) In the functional reaching training group, there was a statistically significant difference in the total TIS score, dynamic TIS score, and MBI. (2) We compared the results obtained before training with the changes in the results obtained after training and found that there was a relation between the assessment outcomes. Especially, static TIS score showed a relation in both groups. Conclusion: Functional reaching training influenced both the trunk control and ADL performance. Especially, the functional reaching training group demonstrated better static trunk control ability than the conservative treatment group.

• Child Health Nursing Research
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• v.24 no.3
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• pp.310-318
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• 2018

Purpose: The purpose of this study was to develop a first aid coaching program (FACP) and to investigate its effects on the first aid knowledge, confidence, and performance of childcare teachers. Methods: A Delphi survey that included 16 experts was used to develop the FACP. A total of 60 participants were included to test the effectiveness of the program. The FACP developed using the survey results focused on improving first aid knowledge, confidence, and performance using a coaching-based method. First aid and cardiopulmonary resuscitation (CPR) performance was assessed using 39 items from the program content. Results: Using a 3-round Delphi survey, 6 areas and 42 detailed topics for group and individual coaching programs were developed. The knowledge scores were significantly higher in the experimental group than in the control group (t=4.24, p=.001). The confidence scores were significantly higher in the experimental group than in the control group (F=3.89, p<.001). The performance scores were significantly higher in the experimental group than in the control group (t=12.40, p<.001). Conclusion: Continuous application of the FACP among child care teachers is expected to minimize the harm caused by minor accidents at child care facilities. This program should be formally implemented on a consistent basis.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.45 no.3
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• pp.204-213
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• 2022

Most of the prior studies on the servitization of manufacturing companies have been actively studied, focusing on the performance and cases of servitization at the single company level. According to the results, most of the servitization at the single company level has been expanded based on the relevance of the company's core products. However, the form of companies that form a large axis of the Korean economy is a large-scale business group, and these business groups incorporate service affiliates for various purposes, so they show different characteristics from that of a single corporate. In addition, since the purpose of forming a business group is different for each business group, the service relevance between affiliates within the business group is different. Therefore, this study aims to examine the effect of service relevance between affiliates within a business group on the management performance of each business group. To this end, an empirical analysis will be conducted using panel data for 10 years from 2011 to 2020 for a total of 98 affiliates listed on KOSPI and KOSDAQ of 9 domestic business groups. Based on these results, the direction for improving management performance and establishing future servitization strategies for large business groups in Korea will be expected to be made.

• Journal of The Korean Society of Integrative Medicine
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• v.8 no.1
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• pp.101-111
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• 2020

Purpose : The purpose of this study was to identify the comparison of the effects of manual therapy combined with exercise on range of motion (ROM), muscle strength, and functional performance in adolescent baseball players with internal impingement syndrome of the shoulder. Methods : The subjects were 30 patients diagnosed with impingement syndrome of the shoulder. Thirty subjects are randomly assigned to each 3 different groups; Group 1. (exercise group), Group 2. (exercise+mobilization; EMOB group), Group 3. (exercise+mobilization with movement; EMWM group). The interventions were performed three times a week for 4 weeks. The main outcome measures were goniometer, Biodex dynamometer, and Korean Kerlan Jobe shoulder-elbow (K-KJOC) scores. The ROM (external and internal rotation), muscle strength (external and internal rotation: 60 °/sec., 180 °/sec.), and functional performance were compared among the groups. Results : No significant difference was observed among the groups in the range of external rotation of the shoulder before and after the intervention, but the range of internal and total rotation was significantly increased in Group 2, 3 compared to Groups 1. Muscle strength of external and internal rotation (60 °/sec., 180 °/sec.) was not significantly different among Group 1, 2, 3, and functional performance was significantly increased in Group 2, 3 compared to Group 1. However, there was no significant difference between Group 2 and Group 3 in all measurements. Conclusion : An intervention with manual therapy such as EMOB and EMWM was more effective than exercise alone for rapid recovery from shoulder injury and improvement in functional performance. However, further efforts are needed to identify effects of specific interventions with manual therapy.

• Korean Journal of Applied Biomechanics
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• v.24 no.3
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• pp.295-300
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• 2014

The purpose of this study was to investigate the effects on jump performance and balance in soccer player with functional ankle instability of difference of neuromuscular training. In 33 male college soccer player with functional ankle instability subjects of this study randomization, combined training group (group I, n=11), balance training group (group II, n=11) and control group (group III, n=11) that included in the plyometric training and balance training was classified group. The intervention was conducted three times a week for 8 weeks. Before and after intervention, measured in surface area ellipse and countermovement jump and countermovement jump with arm swing. Showed a significant improvement in postural control and jump performance from the combined training group and balance training group compared to the control group. Showed a significant improvement in countermovement jump from the combined training group compared to the balance training group. Combined training and balance training showed the increased jump performance and postural control in soccer player with functional ankle instability.

• The Korean Journal of Rehabilitation Nursing
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• v.1 no.1
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• pp.83-92
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• 1998

This study was designed to determine the outcomes of the team-based cardiac rehabilitation programs for patients with Ischemic Heart Disease(IHD) on their level of health behavior performance, anxiety, and quality of life. A total of 19 in-patients with IHD who have had PTCA treatment at G.Hospital in Inchon were selected as subject to data collection from 1 May 1998 to 30 Oct. 1998. The experimental group, consisting of 11 patients participated in the Hospital's cardiac rehabilitation program was compared with the non-rehabilitation control group of 8 patients. The experimental group has been trained on the cardiac rehabliltation programfor 120-150minute during hospitalization by a team consisted of four specialists, those are cardiologist, head nurse, dietian, and the author. Also individual follow-up training and interview were performed for the members of experimental group at their every visit to the Hospital after discharge. For all subjects, scores on health behavior performance, anxiety, and quality of life were collected two days and 12 weeks after PTCA treatment by questionnaire. The collected data were analyzed with the SPSS. The results of this study were summarized as follows : 1) The experimental group shows significant increase in health behavior performance score compared to the control group(-2.27, p=.022). 2) There was no significant difference between two group's anxiety scores (-.24, p= .803) and quality of life scores(-1.86, p= .061). 3) The correlation between health behavior performance and anxiety ( .07, p= .771), and that between health behavior performance and quality of life( .12, p= .621) respectively were not significant statistically. But the correlation between anxiety and quality of life were significant reversely ( .49, p= .032).

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.15 no.3
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• pp.265-270
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• 2004

This paper addresses the effect of group delay in satellite communication system. Phase of signal is distorted by the non-constant group delay. Group delay can be modeled as linear, parabolic and cubic type according to the polynomial characteristic. We investigate BER performance of satellite communication system with each 3 kinds of group delay. As signal bandwidth becomes wider, group delay makes more influence on the signal. BNR performance of satellite communication system is found when data rates are 1Mbps, 4Mbps and 8Mbps. Convolution coding with the code rate of 1/2 or 7/8 is used. At BER =10$\^$-5/, system with group delay needs more SNR of minimum 0.3㏈ to maximum 4.4㏈ than system without group delay. The worst case of BER performance happens in the linear group delay, 7/8 punctured convolution coding and 8 Mbps. The required SNR is increased by 4.4㏈ at this worst case.

• Korean Journal of Exercise Nutrition
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• v.16 no.1
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• pp.51-59
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• 2012

The purpose of this study was to examine the effects of endurance training and prolonged L-arginine supplementation on blood glucose, blood insulin, muscle glycogen, muscle glycogen synthase (GS), muscle nitric oxide (NO), muscle nitric oxide synthase (NOS), endurance performance. We equally divided 36 Sprague-Dawley mice to be distributed into control group, L-NMMA treated group and L-arginine treated group. The L-arginine treated group and L-NMMA treated group consumed 10 mg/kg/day of L-arginine and 5 mg/kg/day of L-NMMA for 6 weeks period. Mice of control group, L-arginine treated group, and L-NMMA treated groups performed swimming exercise training for 60 min once a day, 5 days per week for 6 weeks. Blood glucose had tendency to increase in L-arginine treated group than the control group, and insulin significantly increased in L-arginine treated group than the control group. L-arginine treated group showed significant increase in glycogen, GS, NO and NOS in the gastrocnemius muscle and soleus muscle compared to the control group. Whereas L-NMMA treated group showed the lowest glycogen, GS, NO and NOS in the gastrocnemius muscle and soleus muscle compared to control group and L-arginine treated group. Exhaustive swimming time had tendency to increase in L-arginine treated group compared to the value for control group. These reults indicate that endurance training and prolonged L-arginine supplementation appear to be effective in exhancing nitric oxide production, glycogen concentration and endurance performance.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07a
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• pp.799-801
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• 2005

There have been many streaming servers that provide a large number of contents for a user's preference. General purpose streaming sewer makes use of a RTSP protocol for streaming controls such as message passing with client players. To date, there has been minimal research regarding streaming server's performance test tools. For measuring streaming server's performance, performance evaluation technique is needed and also achieved by RTSP based controls, a server's performance result and its miscellaneous test tools such the PseudoPlayer for pumping data to a specified port and the PseudoMonitor for gathering information. In this paper, We implement a test toolkit for evaluating a streaming server's performance and show the case of its application