• The Journal of the Korea Contents Association
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• v.14 no.6
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• pp.140-151
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• 2014

This study aims to examine the effects of adolescents' family function and School adjustment resilience on smartphone addiction through verification using the structural equation model. To attain the goal, the study collected data through a survey to elementary school fifth and sixth graders and middle school students living in Busan during March in 20l3. The result of this study shows that family function exerts negative effects on smartphone addiction and positive effects on school adjustment resilience. And smartphone addiction is found to show partial mediating effects in the relations between family function and school adjustment resilience. Based on the above results of this study, the paper suggests measures to enhance social interest in adolescent smartphone addiction and also methods to prevent smartphone addiction and intervene with families and schools for therapeutic intervention.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.498-507
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• 2020

The purpose of this study was to examine the effects of thoracic flexibility exercise on sitting balance, static standing balance, gait parameters, and the fall risk of patients with chronic stroke. The participants were randomized into the control (n=12) and thoracic flexibility exercise groups (n=12). Both groups received standard rehabilitation therapy for 30 minutes per session. The subjects in the experimental group performed additional thoracic flexibility exercises 3 times a week for 6 weeks. The trunk impairment scale, static standing balance, gait speed, cadence, and fall risk were assessed for all the participants before and after the intervention. The thoracic flexibility exercise group showed greater improvement than did the control group on the trunk impairment scale (t=-3.57, p=.002), static standing balance (t=5.37, p<.001), gait speed (t=-3.29, p=.003), cadence (t=-2.77, p=.011), and fall risk (t=6.33, p<.001). Furthermore, the thoracic flexibility exercise group significantly improved all the outcomes compared to the baseline values (P<.05). This study showed that the thoracic flexibility exercise improved the functional ability of patients with chronic stroke.

• Journal of Convergence for Information Technology
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• v.11 no.10
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• pp.239-249
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• 2021

The purpose of this study is to verify the mediating effects of psychological flexibility on the relationship between emotional dissonance and mental health(depression, anxiety, somatic symptoms) in university administration staff. For this study, a sample of 191 university administration staff completed the questionnaires. The data was analyzed using the SPSS program and Sobel Test. The results of the analysis are as follows: 1. Most of the university administration staff had difficulties with emotional dissonance(52.36%), depression(47.12%), anxiety(58.12%), and somatic symptoms(62.83%). 2. The risk group of emotional dissonance had a significantly higher level of depression, anxiety and somatic symptoms compared with the normal group. 3. Emotional dissonance and psychological flexibility had a significant effect on depression, anxiety and somatic symptoms. 4. The mediating effects of psychological flexibility on the relationship between emotional dissonance and mental health(depression, anxiety, somatic symptoms) was verified. Finally, We suggested the need to intervene in emotional labor and mental health in university administration staff and psychological flexibility as an intervention and prevention method.

• Proceedings of the Korean Vacuum Society Conference
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• 2012.02a
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• pp.202-202
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• 2012

유연성 투명 전도막은 현대 전자산업의 발전에 있어 필수적인 부품소재로서, 가시광선의 투과율이 80% 이상이고 면저항이 $100{\Omega}/sq.$ 전후이며 휘거나 접히고 나아가 두루마리의 형태로도 응용이 가능한 소재를 일컫는다. 이러한 유연성 투명 전도막은 차세대 정보디스플레이 산업 및 유비쿼터스 사회의 중심이 되는 유연성 디스플레이, 터치패널, 발광다이오드, 태양전지 등 매우 다양한 분야에 응용이 기대된다. 이러한 이유로 고 신뢰성 유연성 투명 전도막 개발기술은 차세대 산업에 있어서의 핵심기술로 인식되고 있다. 현재로서는 인듐 주석 산화물(indium tin oxide; ITO) 및 전도성 유기고분자를 사용하여 투명 전도막을 제조하고 있으나, ITO 박막의 경우 인듐 자원의 고갈로 인한 가격상승 및 기판과의 낮은 접착력, 열팽창계수의 차이로 인한 공정상의 문제, 산화물 특유의 취성으로 인한 유연소자로서의 내구성 저하 등의 문제가 제기되고 있다. 전도성 유기고분자의 경우는 낮은 전기전도도와 기계적강도, 유기용매 처리 등의 문제점이 지적되고 있다. 따라서 높은 전기전도도와 투광도 뿐만 아니라 유연성을 지니는 재료의 개발이 요구되고 있는 실정이다. 최근 이러한 재료로서 그래핀(graphene)과 탄소나노튜브(carbon nanotube; CNT)를 중심으로 하는 탄소나노재료가 주목받고 있으며 많은 연구가 활발히 진행되고 있다. 본 연구에서는 열화학기상증착법(thermal vapor deposition; TCVD)으로 합성된 그래핀 및 CNT를 이용하여 탄소나노재료 복합체 기반의 유연성 투명 전도막을 제작하고 그 특성을 평가하였다. 그래핀과 CNT합성을 위한 기판으로는 각각 300 nm 두께의 니켈과 1 nm 철이 증착된 실리콘 웨이퍼를 이용하였으며, 원료가스로는 메탄(CH4)과 아세틸렌(C2H2)등의 탄화수소가스를 이용하였다. 그래핀의 경우 원료가스의 유량, 합성온도, 냉각속도를 변경하여 대면적으로 두께균일도가 높은 그래핀을 합성하였으며, CNT의 경우 합성시간을 변수로 길이 제어합성을 도모하였다. 합성된 그래핀은 식각공정을, CNT는 스프레이 증착공정을 통해 고분자 기판(polyethylene terephthalate; PET) 위에 순차적으로 전사 및 증착하여 탄소나노재료 복합체 기반의 유연성 투명 전도막을 제작하였다. 제작된 탄소나노재료 복합체 기반의 유연성 투명 전도막은 물리적 과부하를 받았을 때 발생할 수 있는 유연성 투명 전도막의 구조적결함에 기인하는 전도성 저하를 보상하는 특징이 있어, 그래핀과 탄소나노튜브 각각으로 제조된 유연성 투명 전도막보다 물리적인 하중이 반복적으로 인가되었을 때 내구성이 향상되는 효과가 있다. 40% 스트레인을 반복적으로 인가하였을 때 그래핀 투명 전도막은 20 사이클 이후에 면저항이 $1-2{\Omega}/sq.$에서 $15{\Omega}/sq.$ 이상으로 급증한 반면 그래핀-CNT 복합체 투명 전도막은 30사이클까지 $1-2{\Omega}/sq.$ 정도의 면저항을 유지하였다.

• Science of Emotion and Sensibility
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• v.14 no.4
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• pp.495-502
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• 2011

The plastic optical fiber has been previously known to have the limits in fabrication and care, due to its lack of flexibility and durability. Recently, an innovative technology of 'water-resistant & flexible optical fiber', in which the surface of etched POF(i.e., plastic optical fiber) is to be coated with a type of synthetic resin, has been developed. In this study, the post-treated POF-based flexible textiles were evaluated in terms of luminance, physical visibility and perceived visibility, according to the fabric lengths and colors of the light source. The POF-based flexible textile with 10cm fabric length and green light source appeared to show relatively higher illuminating effects. The maximum distance for perceived visibility of the POF-based flexible textiles was found to be 100m. Therefore, the results of this study are expected to be utilized as a fundamental for the further studies to develop the digital color clothing with application of POF-based flexible textile.

• The Journal of the Korea Contents Association
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• v.11 no.5
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• pp.393-402
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• 2011

The purpose of this study was to examine the relationship between the self-Esteem and resilience in married immigrant women, to explore the moderate effect of psychology happiness on those relationship and to suggest practical implications for social work services for those married immigrant women. Data for this study were collected through the use of a survey instrument completed by 139 samples from 148 samples. Collected data were analysed by moderated multiple regression. The findings of this study were as follows: First, this study provided clear evidence that the self-Esteem was very important variable which affected on resilience in married immigrant women. Second, the life satisfaction had moderate effect on relationship between self-Esteem and resilience. Based on these findings, Practice and policy implications as well as further research topics were discussed to aid the search for highly effective interventions.

• Journal of the Korean Applied Science and Technology
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• v.36 no.4
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• pp.1312-1326
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• 2019

The purpose of this study is to examine whether the 12-week Nordic walking can improve the physical function and arthritis pain of elderly women with osteoarthritis This study were divided into randomly assigned Nordic Walking Exercise Group (n=9) and Control Group (n=7) for 16 Elderly women diagnosed with Osteoarthritis (age: 73±3.79 year, height: 154.3±4.09 cm). The exercise group used Nordic sticks to carry out 30 minutes of Nordic walking exercise three times a week for 12 weeks, and the kinetic intensity was set at 40-60% of HRR. The control group maintained daily life for the same period. Body composition (weight, percentage body fat, skeletal muscle mass), muscular strength, Flexibility (muscular strength of upper and lower limbs, flexibility of upper and lower limbs), balance ability (static balance, dynamic balance) and pain level were measured as subordinate variables. These indicators were measured twice before and after the exercise program. The study shows that percentage body fat and skeletal muscle mass in the body composition function over 12 weeks of Nordic walking exercise have significant effects after the exercise than before (p=004)(p=.003), and it also shows significant interaction effects between the groups and timings(p=.018)(p=.005). In muscular strength, Flexibility factors, there were significant effects between the groups and timings in the upper limb muscular strength and the lower limb flexibility (p=.009)(p=.036), and a significant difference between the exercise group and the control group(p=.006) in the lower limb muscular strength. In addition, in the upper limb flexibility, there was a more significant difference after the exercise than before(p=.020). There were improvement effects after the exercise than before in the balance ability and the static balance(p=.016), but no difference in the dynamic balance(p>.05). In pain, there was a significant improvement after the exercise than before(p=.022), and a significant difference between the exercise group and the control group(p=.013). In conclusion, the 12-week Nordic walking exercise has positive effects on the body composition functions of the elderly women with Osteoarthritis, and has a positive effect on the improvement of upper limb muscular strength and lower limb flexibility in the health fitness factors. These effects are believed to have contributed effectively to the improvement of the level of pain by contributing to the improvement of physical and motor functions of the elderly women with Osteoarthritis. Therefore, it is considered that Nordic walking exercise, which enhances stability and balance of the patients with Osteoarthritis by using poles, is an effective exercise method for the improvement of the body and motor functions by lowering the pain of the joints and reducing the muscular strength and percentage body fat.

• 한국노년학
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• v.29 no.3
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• pp.987-1000
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• 2009

The purpose of the study was to examine the effect of resistance training on joint flexibility and muscle strength of upper extremities of institutionalized elderly with impaired cognition. The study design was pretest-posttest control group study and inclusion criteria were elderly aged 65-year older, MMSE score 23 or less, ones who had no serious physical and/or mental problem except impaired cognition, and were capable to carry out resistance training. After consents were obtained participants were randomly assigned. Pre-post evaluation was performed by staff nurses trained beforehand. Among those 4-week study period, experiment was carried out during 5 consecutive days a week for 3 weeks. ROM and extension range of shoulder joints and muscle strength of shoulders and hands for both sides were measured. Flexion, extension, abduction range of right shoulder joint was significantly improved. Flexion and extension muscle strength of left side shoulder and abduction muscle strength of both sides of shoulder were significantly improved. With the study result, it could be concluded that resistance training has therapeutic effects on joint flexibility and muscle strength. More studies adopted longer experimental period to evaluate timing of effect and extinction to refine the protocol are called for.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.04a
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• pp.806-808
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• 2000

급변하는 세계시장으로부터 다양한 요구에 유연하게 대응하기 위해서 대부분의 생산 시스템들이 혼류 생산 체제로 바뀌어 가고 있다. 이에 맞추어 자동화 시스템 또한 유연성을 고려하여 투자가 진행된다. 이런 자동화된 생산 시스템들을 효과적으로 도입하기 위해서는 다각적인 분석이 필요하다. 최근 들어 컴퓨터 시뮬레이션 기법의 발전으로 유용한 도구가 개발되어 많은 시간과 비용이 요구되는 자동화 시스템을 분석하는데 효과적으로 활용되고 있다. 컴퓨터 시뮬레이션이란 복잡하고 어려운 시스템을 직접 변경시키지 않고 현 시스템의 자료를 바탕으로 이를 컴퓨터에 모델링하여 분석하는 도구이다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.614-625
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• 2018

This study was conducted to investigate the level of resilience and the factors affecting resilience in nursing students, and to provide basic data to develop a program that improves resilience of nursing students. Data were collected from 155 nursing students in D city from April 15 to May 30, 2018 using the Resilience Scale, College Life Stress Scale, Self-Efficacy Scale (SES), Multi-Dimensional Scale of Perceived Social Support (MSPSS), Positive Affect Scale, and Stress Coping Strategy Scale. Data were analyzed using t-tests, ANOVA, Pearson's correlation coefficient, and multiple regression. The mean score for resilience in nursing students was 3.54 points. There was a significant difference in resilience according to academic score and satisfaction with major. Resilience was significantly correlated with self-efficacy, social support, and active stress coping strategy. Factors that impacted resilience in multiple regression were self-efficacy (${\beta}=0.39$, p<0.001), active stress coping strategy (${\beta}=0.26$, p<0.001), and social support (${\beta}=0.16$, p<0.001). These factors explained 51.0% of the variance in the resilience of nursing students. Therefore, it will be necessary to develop a program that can enhance resilience by strengthening protective factors such as self-efficacy, active stress coping strategies, and social support.