• Journal of Korean Biological Nursing Science
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• 제13권2호
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• pp.102-108
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• 2011

Purpose: The purpose of this study was to examine the effects of first clinical training on stress, anxiety and changes in autonomic nervous system in nursing students. Methods: Seventy-four nursing students were assigned to the experimental group (n=36) that had two weeks of clinical training, and the control group (n=38) that had only two weeks of regular classes. Perceived stress, state anxiety and heart rate variability (HRV) were measured at the beginning and end of the experiment. Results: Perceived stress in the experimental group was significantly higher than in the control group. However, State anxiety was not significantly different between the two groups. All indices of HRV except LF/HF ratio were significantly different between the two groups. LF norm in the experimental group was significantly higher than in the control group, and HF norm in the experimental group was significantly lower than in the control group. Conclusion: Based on these results, it can be suggested that clinical training increases the perceived stress and affects the changes in autonomic nervous system in nursing students.

• 한방재활의학과학회지
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• 제20권4호
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• pp.147-157
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• 2010

Objectives : The study is performed to investigate the influence of psychological stress on neck muscles tone and heart rate variability(HRV). Methods : This study was carried out with the data from stress response index score(SRI), surface electromyography(sEMG) and HRV. First subjects were divided into two group according to the SRI points. Subjects in group A had points of SRI in which lower than 30 points. Subjects in group B had points of SRI in which higher than 30 points. Then we investigated how to difference of the index of sEMG and HRV according to each groups. Results : In this study, the muscle contraction of both upper trapezius muscle in stress group were higher than non-stress group significantly. Complexity, root mean square of successive differences of R-R intervals(RMSSD), standard deviation difference between adjacent normal to normal intervals(SDSD), high frequency oscillation power(Ln(HF)), normalized HF(Norm HF) in stress group were lower than non-stress group significantly and normalized LF(Norm LF) was higher. Conclusions : This results show that the stress was associated with neck muscle condition and autonomic nervous system.

• 한국심리학회지ㆍ건강
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• 제14권2호
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• pp.277-292
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• 2009

급성 스트레스 상황에 따른 Type D 성격의 자율신경계 반응을 심박률 변동성을 중심으로 조사하였다. Type DS-14의 점수에 근거하여 Type D 집단(n=23명)과 non-Type D 집단(n=23명)을 구성하였다. 심박률 변동성(heart rate variability, HRV)을 이용하여 기저선, 스트레스 단계 및 회복 단계 동안의 심박활동을 측정하였으며 스트레스 과제로는 Stroop 색채단어 검사가 사용되었다. 반복측정 변랑분석을 통해 두 집단의 심박활동을 비교하였으며, 회귀분석을 통해 Type D 척도와 스트레스 취약성 척도가 기저선 상태에서의 심박활동의 변화를 예측할 수 있는지를 알아보았다. 연구 결과, Type D 집단은 non-Type D 집단보다 고주파수(high frequency, HF) 활성화가 더 낮았고 저주파수(low frequency, LF) 활성화는 더 높았다. 스트레스 과제 수행 시, non-Type D 집단에서는 교감신경계 활성화 지표(LF component, LF/HF)가 증가하고 부교감신경계 활성화 지표(HF component)가 감소하는 것이 관찰된 반면, Type D 집단에서는 심박활동 비율상의 유의한 변화가 나타나지 않았다. 또한, Type D 척도의 총점수, 부정적 정서 소척도와 사회적 억제 소척도는 기저선 상태에서의 심박활동 반응에 대한 유의한 예측인자로 나타났다. 이러한 결과는 Type D 성격이 non-Type D 성격에 비해 교감신경계 활성화 비율이 높거나 또는 부교감신경계 활성화비율이 낮음을 시사한다. 즉, Type D가 스트레스에 취약한 성격임을 시사하며, Type D에서 관찰된 심박 활동 양상, 즉 높은 교감신경계 혹은 낮은 부교감신경계 활성화는 Type D 성격이 심장혈관 장애 등을 포함한 정신신체 질환과 관련될 수 있음을 시사한다.

• 한국학교ㆍ지역보건교육학회지
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• 제19권3호
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• pp.53-64
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• 2018

Objectives: The purpose of this study was to investigate the factors affecting the satisfaction of tutoring and some dental hygiene students and to investigate whether the self - efficacy and subjective norm are mediating effects. Methods: This study was conducted on 81 students in the first year, 82 students in the second year, 30 students in third year of girls who are majoring in the dental hygiene of a college in north Gyeonsang province Form September 1 to October 15 2017 asked them to answer the questionnaire and retrieved the questionnaire, among the 193 questionnaires except for the inaccurate response, 186 were final analysis. Results: In the relationship between the affective factors of tutoring learning and the satisfaction of tutoring learning, the relationship of social interdependence, group intimacy, program usefulness, group commitment, academic self - efficacy, subjective norm, It was found to be relevant. The usefulness of the program was found to have a significant effect on the satisfaction of tutoring learning. Conclusions: It is expected that the tutoring learning satisfaction is mediated by the academic self - efficacy and the subjective norm, so that it can be utilized as the basic data of the study application of the new education program in the field of dental hygiene.

• 대한수학회보
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• 제56권4호
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• pp.841-852
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• 2019

We establish the generalized Myers theorem for Finsler manifolds under integral Ricci curvature bound. More precisely, we show that the forward complete Finsler n-manifold whose part of Ricci curvature less than a positive constant is small in $L^p$-norm (for p > n/2) have bounded diameter and finite fundamental group.

• 한국웰니스학회지
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• 제6권3호
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• pp.13-21
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• 2011

The purpose of this study was to examine the potential predictors of leisure behavior intention using the theory of planned behavior(TPB). A convenience sample of 369 participants was obtained from university students in Korea and America. For the purposes of this study, potential predictors of leisure behavior intention were selected from the following categories: attitude, subject norm, perceived behavior control, group conformity and face saving. In order to better understand the dynamics of the TPB process that influenced leisure behavior intention, this study used structural equation modeling(SEM) to test the TPB model. According to the results, attitude, subject norm, and perceived behavior control influenced to leisure behavior intention of both Korean and American university students and face saving influenced to leisure behavior intention of Korean university students. However, group conformity did not influence to leisure behavior intention of either Korean and American university students. For future study, more specific and decomposed factors are recommended to understand leisure behavior intention in theoretical way.

• 대한한방부인과학회지
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• 제21권3호
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• pp.99-110
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• 2008

Purpose: Premenstrual syndrome(PMS) is a collection of physical, psychological and emotional symptoms related to a women's menstrual cycle. The symptoms are related with Autonomic Nervous system. The purpose of this study is to investigate the activity of Autonomic Nervous system in women with premenstrual syndrome(PMS) by using Heart Rate Variability(HRV). Methods: We studied 26 patients visiting ㅇㅇ hospital from 26th December 2005 to 26th April 2006. Activity of Autonomic Nervous system was assesed by means of Heart Rate Variability(HRV). The subjects were categorized in two groups, PMS group(10) and non-PMS group(16). We studied the difference of HRV between two groups by Mann-Whitney U-test using SPSS for windows (version 12.0). Results: SDNN of PMS group was non-significantly lower than non-PMS group. RMS-SD of PMS group was significantly lower than non-PMS group. Mean PR of PMS group was non-significantly higher than non-PMS group. TP, VLF, LF, HF norm of PMS group was non-significantly lower than non-PMS group. HF of PMS group was significantly lower than non-PMS group. LF norm, LF/HF ratio of PMS group was non-significantly higher than non-PMS group. Conclusion: The results suggest that PMS can be related to decreased activity of parasympathetic nervous system. HRV can be useful to diagnose PMS. The more studies to diagnose PMS would be needed.

• 대한간호학회지
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• 제48권3호
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• pp.298-310
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• 2018

Purpose: The purpose of this study was to examine the effects of the laughter therapy program on perceived stress and psycho-neuro-endocrine-immune responses in obese women. Methods: A nonequivalent control group with a pretest-posttest design was used. The participants (n=60), whose age ranged from 30 to 50 years (pre-menopausal and body mass index of over $25kg/m^2$), were assigned to the experimental group (n=24) or control group (n=26). The experimental group was provided with the laughter therapy program (12 sessions) for 6 weeks. Results: There were significant differences in perceived stress, psychological stress response, fasting blood sugar, interleukin-6, and tumor necrosis factor alpha between the two groups after the program. However, there were no significant differences in normalized low frequency (norm LF), normalized high frequency (norm HF), LF/HF ratio, and cortisol between the two groups after the program. Conclusion: It was found that the laughter therapy program had positive effects on some variables in terms of perceived stress and psycho-neuro-endocrine-immuno responses. It is suggested that the laughter therapy in this study can provide the direction for developing a program for obese women.

• 지식경영연구
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• 제17권1호
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• pp.113-133
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• 2016

Why illegal digital contents sharing happens? This study pays attention to the fact that file sharing is an exchanging behavior between people and it is expanding despite of an illegal behavior and proposes that it is necessary for the phenomenon to be understood from social cultural point of view beyond a personal dimension. Based on the social exchange theory, this study demonstrates effects of file sharing attitudes and continuity, regarding 'group norm', 'popular demand', 'reciprocity' and 'social solidarity' as main factors. The main findings of this study are as followed;- First, it is shown that a tacit agreement of a group on file sharing is a determinant of positive attitude to file sharing and the intent of continual file sharing. Second, it is not found that the social relationship factors that are regarded as potential influential factors on file sharing attitude have effects on file sharing behavior, except for 'group norm'. Unlike previous studies, the results may come from the fact that this study deals with an illegal behavior. The third finding indicates a structural relationship between social relationship factors. When members of a group have more amicable attitude to file sharing including silence or a tacit agreement on file sharing, more people ask illegal sharing of files that they need. Such public demand creates expectation of reciprocity. As reciprocity maintains, social connectedness is strengthened. Then, strong social connectedness escalates the intent to maintain file sharing. It is important to notice that this study promotes understanding of how digital contents sharing happens by structuring and demonstrating influential relationship between characteristic factors of the social relationship.

• 한국융합학회논문지
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• 제8권7호
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• pp.341-348
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• 2017

본 연구는 K-WISC-IV 프로파일을 통해 고기능 자폐 스펙트럼 장애(ASD) 아동의 인지적인 특성을 확인하여 고기능 ASD 아동의 진단에 도움을 주며, 임상 및 교육 장면에서 효과적인 개입을 위한 정보를 제공하는데 목적이 있다. 이에 6~16세의 고기능 ASD 아동 90명을 대상으로 K-WISC-IV의 전체 IQ, 지표 점수와 소검사 환산점수의 평균을 살펴보았으며, 이와 같은 점수들이 규준 집단과 차이가 있는지 확인하고자 단일 집단 t 검정을 시행하였다. 그 결과 처리속도 지표, 작업기억 지표에서 고기능 ASD아동이 규준 집단에 비해 유의하게 낮은 점수를 얻었고, 소검사 수준에서는 이해, 공통그림찾기, 빠진 곳찾기, 순차연결, 산수, 동형찾기, 기호쓰기에서 유의미하게 부진한 수행을 보였다. 다시 말해, K-WISC-IV 프로파일을 통해 고기능 ASD 아동들이 처리 속도가 느리고 사회적 판단력이 부족하며 비언어적인 자극을 빠르게 포착하거나 시각 자극의 핵심적 측면을 파악하는 것이 어렵다는 특성을 알 수 있었다.