• Title, Summary, Keyword: stress state

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Perceived Stress, Mood State, and Sympotms of Stress of the Patient with Chronic Illness (만성질환자의 스트레스 지각, 기분상태, 스트레스 증상에 관한 연구)

  • 한금선
    • Journal of Korean Academy of Nursing
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    • v.33 no.1
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    • pp.87-94
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    • 2003
  • Purpose: The purpose of this study was to identify the factors influencing Symptoms of Stress in patients with chronic illness. Method: Data were collected by questionnaires from 1,748 patients with chronic disease in General Hospital in Seoul. Chronic diseases of were cardiac disease including hypertension, peptic ulcer, pulmonary disease included COPD and asthma, DM, and chronic kidney disease. The data were analyzed using descriptive statistics, pearson correlation coefficients, and stepwise multiple regression. Result: 1. The level of symptoms of stress was moderate(M=2.17). 2. The score of symptoms of stress showed significantly positive correlation with the score of mood state(r=.58, p=.00), perceived stress(r=.57, p=.00), and ways of coping(r=.33, p=.00). The symptoms of stress showed significantly negative correlation with the score of social support(r=-.37, p=.00) and self-esteem(r=-.19, p=.00). 3. The most powerful predictor of symptoms of stress was mood state and the variance explained was 34%. A combination of mood state, ways of coping, perceived stress, social support, and duration of illness account for 45% of the variance in symptoms of stress of the patients with chronic illness. Conclusion: This study suggest that mood state, ways of coping, perceived stress, and social support are significantly influencing factors on symptoms of stress of the patients with chronic illness.

Stress analysis model for un-bonded umbilical cables

  • Chen, Xiqia;Fu, Shixiao;Song, Leijian;Zhong, Qian;Huang, Xiaoping
    • Ocean Systems Engineering
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    • v.3 no.2
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    • pp.97-122
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    • 2013
  • For the optimization design and strength evaluation of the umbilical cable, the calculation of cross section stress is of great importance and very time consuming. To calculate the cross section stress under combined tension and bending loads, a new integrated analytical model of umbilical cable is presented in this paper. Based on the Hook's law, the axial strain of helical components serves as the tensile stress. Considering the effects of friction between helical components, the bending stress is divided into elastic bending stress and friction stress. For the former, the elastic bending stress, the curvature of helical components is deduced; and for the latter, the shear stress before and after the slipping of helical components is determined. This new analytical model is validated by the experimental results of an umbilical cable. Further, this model is applied to estimate the extreme strength and fatigue life of the umbilical cable used in South China Sea.

Consideration of FEM Analysis and Effect of Structure in Fault Rock (단층의 해석상의 고려사항과 암반구조물에 미치는 영향)

  • Ahn, Sung-Youll
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.160-169
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    • 2007
  • In this study, Analyzed stress history, state of stress, ratio of stress/strength to use FEM. Fault Zone depth is 3m, 6m, 9m, 12m and 15m for study, and also Distance is 3m, 6m, 9m, 12m and 15m at center of tunnel with thickness 3m fault zone. It is not appeared that Arching in stress state and stress history by FEM. On the other hand, excessive shear stress and high compressive stress happened. Therefore, Tunnel design is desirable that do it so that state of stress that is the imbalance may be uplemented. it is important that examine each state of stress and stress history in detail tunnel design.

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A Research on Health State According to Stress Perceptual Level by Constitution of the Korean (한국인의 체질별 스트레스 인지정도에 따른 건강상태 연구)

  • 전은영;김귀분
    • Journal of Korean Academy of Nursing
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    • v.22 no.1
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    • pp.17-28
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    • 1992
  • The purpose of this study was to find out the differences in stress perceptual levels of the Koreans according to their constitution and to analyze the effects of them on physical and mental health state. The subject of investigation was 87 outpatient department of constitution on Kyung - Hee Oriental Medicine Hospital. Data were collected by using interview with Questionaire. The measurement tools were Questionaire of constitution Identity(by B.H.Go), Stress Scale (by P.S.Lee ) and Cornell Medical Index. All of the tools were pre -tested for their reliability and validity. Analysis of data was done using frequency, t-test, ANOVA, Pearson correlation and ANCOVA in SPSS program. The results obtained are as follows. 1. Stress perceptual level of the Koreans were significantly different as their constitution(F=9.68, P<.001). SOEMIN was the highest constitution in stress perceptual level. 2. In health state, there were considerable difference among the three constitutions(F=6.654, P<.05). SOEMIN was the lowest one at health state. 3. An inverse correlation was found out between stress perceptual level and health state(r=- .6034, P=.0001). 4. There were no differences in health state of the Koreans according to their constitutions if stress perceptual level excluded(F=1.01, P=.37). In conclusion, health state was effected not by constitutions alone, but by stress perceptual level according to constitutions of the Koreans.

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Effects of Progressive Muscle Relaxation on Behavioral States and Emotional Reactions of Adolescent Athletes (점진적 근육이완요법이 청소년 운동선수의 행동상태와 정서반응에 미치는 효과*)

  • Park Sun-Nam
    • Child Health Nursing Research
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    • v.7 no.3
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    • pp.383-396
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    • 2001
  • This study was designed to investigate the effects of the progressive muscle relaxation on behavioral states and emotional reactions of adolescent athletes. The participants were 167 adolescent male soccer players aged between 12 and 18 who were junior or high school students in Seoul. Ninety-three of them were assigned to the experimental group, while seventy-four to the control group. The experimental group was treated by 10 sessions (20 min./session) of Jacobson's progressive muscle relaxation for two weeks, while the control group was not treated. The self and observer reported behavioral states, general stress by visual analogue scale, physical symptoms of stress, athletic stress, state anxiety, depression, self-esteem were measured before and after two weeks of the progressive muscle relaxation. The results were as follows ; 1. The self and observer reported behavioral states were significantly decreased in the experimental group compared with the control group. 2. The general stress and the gastrointestinal symptoms of stress were significantly decreased in the experimental group compared with the control group. No significant difference on athletic stress was found between the two groups. The depression and the state anxiety were significantly decreased in the experimental group compared with the control group. The self-esteem was significantly increased in the experimental group compared with the control group. 3. The influential factors on behavioral state of adolescent male athlete were depression and state anxiety. The accelerating factor on behavioral state change after the progressive muscle relaxation was state anxiety. These results are suggested that the progressive muscle relaxation could be effective in stabilizing behavioral state, decreasing general stress, gastrointestinal symptoms of stress, depression, state anxiety, in increasing self-esteem of adolescent male athletes. And the behavioral state change after the progressive muscle relaxation was influenced by state anxiety.

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Improvement of heat and drought photosynthetic tolerance in wheat by overaccumulation of glycinebetaine

  • Wang, Gui-Ping;Hui, Zhen;Li, Feng;Zhao, Mei-Rong;Zhang, Jin;Wang, Wei
    • Plant Biotechnology Reports
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    • v.4 no.3
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    • pp.213-222
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    • 2010
  • Within their natural habitat, crops are often subjected to drought and heat stress, which suppress crop growth and decrease crop production. Causing overaccumulation of glycinebetaine (GB) has been used to enhance the crop yield under stress. Here, we investigated the response of wheat (Triticum aestivum L.) photosynthesis to drought, heat stress and their combination with a transgenic wheat line (T6) overaccumulating GB and its wild-type (WT) Shi4185. Drought stress (DS) was imposed by controlling irrigation until the relative water content (RWC) of the flag leaves decreased to between 78 and 82%. Heat stress (HS) was applied by exposing wheat plants to $40^{\circ}C$ for 4 h. A combination of drought and heat stress was applied by subjecting the drought-stressed plants to a heat stress as above. The results indicated that all stresses decreased photosynthesis, but the combination of drought and heat stress exacerbated the negative effects on photosynthesis more than exposure to drought or heat stress alone. Drought stress decreased the transpiration rate (Tr), stomatal conductance (Gs) and intercellular $CO_2$ concentration (Ci), while heat stress increased all of these; the deprivation of water was greater under drought stress than heat stress, but heat stress decreased the antioxidant enzyme activity to a greater extent. Overaccumulated GB could alleviate the decrease of photosynthesis caused by all stresses tested. These suggest that GB induces an increase of osmotic adjustments for drought tolerance, while its improvement of the antioxidative defense system including antioxidative enzymes and antioxidants may be more important for heat tolerance.

Strength Characteristics of Clay Soil by Preconsolidation Pressure (선행하중(先行荷重)에 의한 점토(粘土)의 강도특성(强度特性))

  • Chon, Yong-Baek;Shin, Young-Gi
    • Journal of the Korean Society of Industry Convergence
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    • v.6 no.3
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    • pp.185-192
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    • 2003
  • This study consolidation undrain Triaxial Compression Tests using constant confining pressure in clay that receive preconsolidation stress that is different and, void ratio, pore water pressure coefficient, shear strength compare with another thing theory and studied analyzing change relation of elastic modules. The summary of analysis is follows: If preconsolidation stress increases in same confining stress in relation of preconsolidation stress and deviator stress, deviator stress is proportional and increased. Can know that excess void pressure is proportional and decreases in size of preconsolidation stress in same confining stress state if preconsolidation stress increases preconsolidation stress and relation of excess void pressure. Also, over consolidated state can assume that this is thing by Dilatancy's effect though excess void pressure decreased remarkably. Preconsolidation stress and relation of stress path can know that shear strength degree increases preconsolidation stress increases, and specially, preconsolidation stress was appear in stress path form of overconsolidated state case of clay that receive at 300, 400, 500kPa in 100, 150kPa's deviator stress.

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Effectiveness of Acupuncture Therapy on Stress in a Large Urban College Population

  • Schroeder, Stefanie;Burnis, James;Denton, Antony;Krasnow, Aaron;Raghu, T.S.;Mathis, Kimberly
    • Journal of Acupuncture & Meridian Studies
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    • v.10 no.3
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    • pp.165-170
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    • 2017
  • This study is a randomized controlled clinical trial to study the effectiveness of acupuncture on the perception of stress in patients who study or work on a large, urban college campus. The hypothesis was that verum acupuncture would demonstrate a significant positive impact on perceived stress as compared to sham acupuncture. This study included 111 participants with high self-reported stress levels who either studied or worked at a large, urban public university in the southwestern United States. However, only 62 participants completed the study. The participants were randomized into a verum acupuncture or sham acupuncture group. Both the groups received treatment once a week for 12 weeks. The Cohen's global measure of perceived stress scale (PSS-14) was completed by each participant prior to treatment, at 6 weeks, at 12 weeks, and 6 weeks and 12 weeks post-treatment completion. While participants of both the groups showed a substantial initial decrease in perceived stress scores, at 12 weeks post treatment, the verum acupuncture group showed a significantly greater treatment effect than the sham acupuncture group. This study indicates that acupuncture may be successful in decreasing the perception of stress in students and staff at a large urban university, and this effect persists for at least 3 months after the completion of treatment.

The Oxide Characteristics in Flash EEPROM Applications (플래시 EEPROM 응용을 위한 산화막 특성)

  • 강창수;김동진;강기성
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.855-858
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    • 2001
  • The stress induced leakage currents of thin silicon oxides is investigated in the VLSI implementation of a self learning neural network integrated circuits using a linearity synapse transistor. The channel current for the thickness dependence of stress current, transient current, and stress induced leakage currents has been measured in oxides with thicknesses between 41 ${\AA}$, 86${\AA}$, which have the channel width ${\times}$ length 10 ${\times}$1${\mu}$m, 10 ${\times}$0.3${\mu}$m respectively. The stress induced leakage currents will affect data retention in synapse transistors and the stress current, transient current is used to estimate to fundamental limitations on oxide thicknesses. The synapse transistor made by thin silicon oxides has represented the neural states and the manipulation which gaves unipolar weights. The weight value of synapse transistor was caused by the bias conditions. Excitatory state and inhitory state according to weighted values affected the channel current. The stress induced leakage currents affected excitatory state and inhitory state.

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A Research on the Health State According to Each of the Korean Constitution's Perceptual Level of Stress (한국인의 체질별 스트레스 인지정도에 따른 건강상태에 대한 연구)

  • Jeon, Eun-Young;Ko, Byung-Hee;Kim, Kwuy-Bun
    • Journal of Sasang Constitutional Medicine
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    • v.4 no.1
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    • pp.81-106
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    • 1992
  • The purpose of this study was to find out the causal relationship between perceptual level of stress and health state according to Korean constitutions and to analyze that effect on the Korean constitution's health state. Subjects of this study were 87 out patient department of constitution at Kyung-Hee Oriental Medicine Hospital. Data were collected by using interview with Questionaire during 6 months from Feb. 2 to June 31, 1991. The Measurement tools used by this researcher were Go's The Questionaire of Identify about constitution, Lee's stress scale and Go's modified Cornell Medical Index which were approved it's reliability and validity. All of the questionaires of were used after pre- test. For the purposes of the study, the collected data were analyzed by frequency, t-test, ANOVA and Pearson correlation. And then this research's issue was tested by SAS program's ANCOVA. The findings of this study was summarized as follow. 1. There was significantly differences in stress perceptual level in Korean constitution. (F=9.68, P=.000). The So Em In (小陰人) were higher than the other constitution on stress perceptional level. 2. In health state, there was significantly difference among Korean constitution. (F=6.654, P=.002). Also the So Em In (小陰人) was lower than the other constitution at health state. Therefore, it was considerate that So Em In (小陰人) was higher perceptual level of stress than the other constitution and the resulting poor health state. 3. Stressful perception was effected on the health state, as a result inverted correlation was constructed between stress perception and health state. (r=-.6034, P=.0001) 4. After exclusion of stress perceptual level, each of the Korean Constitution's health state was not difference (F=1.01, P=.37). It was mean that differences of the Korean Constitution's perceptual level of stress effected on the health state. Bacause So Em In (小陰人) had higher perceptual level of stress than other constitution (F=9.687, P=.000), in proportion to that one's health state was poor. From the results of this study, it could be concluded that the higher stress perceptual level according to Korean constitution, the poorer health state. Further study in this area needs to be consideration that in order to coping with stress, researcher grope for quality nursing intervention with more accurative assessment about Korean constitution.

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