• 수산해양교육연구
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• 제23권3호
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• pp.400-409
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• 2011

The purpose of this study was to investigate the influence of irrational beliefs on parenting stress of mothers with early children. For achieving this purpose, Irrational Belief Test and Parenting Stress Index were administered to 300 mothers with early children in Busan and data from 234 mothers were used for statistical analysis. Collected data were analyzed using Pearson correlation coefficient and stepwise multiple regression analysis. The results of correlational analysis showed that irrational beliefs were positively related to parenting stress. Anxious over-concern factor was related to all parenting stress variables. The results of stepwise regression analysis revealed that 2~4 irrational beliefs significantly influenced parenting stress; sub-factors of parenting stress variable that irrational beliefs had the most effect on was competence factor. Based upon these results, it can be concluded that irrational belief is an important variable which predicts parenting stress of mothers with early children.

• 사상체질의학회지
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• 제30권1호
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• pp.58-65
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• 2018

Objectives This study is to identify the relationship between stress, obesity and metabolic syndrome (MetS) by Sasang constitution (SC) and to use it as a basic data for the customized healthcare system of chronic disease management. Methods In a cross-sectional study conducted in a rural area of the Gyeongju area in 2014, we extracted data on 1,847 people using data from Korean medicine Data Center (KDC). The SC types diagnosed by Sasang constitutional medicine doctor. The stress was measured by the psychosocial well-being index questionnaire, and the obesity was defined by the body mass index. Results In all SC type, the stress and obesity was associated with MetS. There was a significant difference in the prevalence and trend of MetS according to presence of stress and obesity. The prevalence of MetS was the highest in Taeumin with all the stress and obesity, in order of Soeumin and Soyangin. Regardless SC types, the stress was associated with higher risk of MetS in the obese but not in the nonobese. Conclusion The results of this study indicate that further research is necessary to the SC types for the management of the Metabolic syndrome according to stress and obesity.

• 한국직업건강간호학회지
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• 제23권3호
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• pp.171-179
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• 2014

Purpose: The purpose of this research was to provide baseline data by utilizing solutions to health problems caused by work-related stress and to examine a way of treatment by comparing and analyzing how the stresses link to fatigue and quality of researchers' life. Methods: A survey was conducted with 50 researchers working for in H research institute in Daejeon Metropolitan City from April 10th to May 10th, 2012 to examine the correlation of work stress, fatigue and quality of life. The data were analyzed using the Kruskal-Wallis test to look into examine the difference in work stress, fatigue, and quality of life. Also, the correlation of work stress, fatigue and quality of life was measured through by the Pearson correlation coefficient. The data collected through the questionnaires was were analyzed by SPSS 21.0 based on the significant level with a p-value, 0.05. Results: The results showed that fatigue was caused by work stresses in researchers and quality of life was ranked in a relatively low level. Correlation of work stresses, quality of life and fatigue and work stresses against mental health index was negative and fatigue against physical index was also negative. Conclusion: It is necessary to maintain more detailed provisions in order to improve mental health and stress level of researchers. Moreover, systematic, in-depth evaluation should be done to reduce researcher's work-related stress and fatigue. In addition, stress management and prevention program should be implemented for these researchers.

• 한국토양비료학회지
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• 제49권2호
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• pp.157-167
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• 2016

The interspecific estimation for tolerance capacities of upland crop species to excessive soil water stress in paddy field is significant in agricultural practices. Most of upland crops can be damaged by either excessive soil water or capillary rise of the water table during rainy season in paddy fields. The major objective of this study was to evaluate water stress of upland crops under different drainage classes in converted paddy field. This experiment was carried out in poorly drained soil (PDS) and imperfectly drained soil (IDS) of alluvial sloping area located at Toero-ri, Bubuk-myeon, Miryang-si, Gyeongsangnam-do. The soil was Gagog series, which was a member of the fine silty, mixed, nonacid, mesic family of Aeric Endoaquepts (Low Humic-Gley soils). Two drainage methods, namely under Open ditch drainage methods (ODM) and, Closed pipe drainage methods (PDM) were installed within 1-m position at the lower edge of the upper paddy fields. The results showed that sum of excess water days ($SWD_{30}$), which was used to represent the moisture stress index, was 42 days (the lowest) in the PDM compared with 110 days in the ODM. Most of upland crops were more susceptible to excessive soil water during panicle initial stage on more PDS than on IDS. Yield of upland crops in the PDM was continuously increased by the rate of 15.1% on sorghum, 15.4% foxtail millet, 53.6% proso millet, 49.6% soybean and 47.9% adzuki bean as compared in the ODM. The capacity for tolerance by excessive soil water based on yield of each upland crop in the poorly drained sloping paddy fields was the order of sorghum, soybean, foxtail millet, proso millet and adzuki bean. Therefore, Sorghum is relatively tolerant to excessive soil water conditions and, may be grown successfully in converted paddy field.

• 생태와환경
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• 제40권3호
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• pp.459-467
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• 2007

동일 수계에 위치하며 하천의 규모가 비슷하지만 유역의 특성에 따라 강우시 탁수의 영향을 크게 받는 탁수하천과 대조하천을 대상으로 어류서식지 및 군집구조의 특성을 비교하였다. 탁수하천인 대기천의 하천바닥은 주로 모래로 구성되었으며, 대조하천인 봉산천과 계방천은 큰 돌과 작은 돌이 우점하였다. 강우시 탁수하천에서 강우량에 따른 단위면적당 SS 유출은 대조하천에 비해 $4{\sim}200$배정도 높았으며, 이에 따른 서식지의 스트레스 지수는 탁수하천이 약 84배정도 더 크게 받는 것으로 나타났다. 탁수하천과 대조 하천간에 출현종수는 큰 차이를 보이지 않았지만 우점종은 서로 다르게 나타났다. 맑은 하천인 봉산천에서는 하천의 최상류어종인 금강모치, 열목어, 둑중개 등이 우점하였으나, 탁수하천인 대기천에서는 금강모치와 참갈겨니, 종개 등 하천의 중 상류성 어류들이 우점하는 것으로 나타났다. 단위면적당 어류밀도를 비교해본 결과, 탁수하천인 대기천은 대조하천인 봉산천에 비해 1/4로 낮게 나타났다. 집괴분석결과 대기천의 어류군집은 다른 하천의 어류군집과 전혀 다르게 나타났으며, 봉산천은 최상류의 어류군집을 유지하고 있는 것으로 나타났다. 결론적으로, 탁수는 어류의 개체나 개체군을 사멸시킬 확률이 높지 않으나, 강한 스트레스 아래에서 어류군집은 충분히 변화할 수 있다. 같은 수계에서 우점종의 차이가 나타난 것은 탁수가 군집수준에서 만성생태 독성으로 작용하였음을 보여주는 결과이다.

• Advances in materials Research
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• 제9권2호
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• pp.115-131
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• 2020

Limit elastic speed analysis of Al/SiC-based functionally graded annular disk of uniform thickness has been carried out for two cases, namely: metal-rich and ceramic rich. In the present study, the unknown field variable for radial displacement is solved using variational method wherein the solution was obtained by Galerkin's error minimization principle. One of the objectives was to identify the variation of induced stress in a functionally graded disk of uniform thickness at limit elastic speed using modified rule of mixture by comparing the induced von-Mises stress with the yield stress along the disk radius, thereby locating the yield initiation. Furthermore, limit elastic speed has been reported for a combination of varying grading index (n) and aspect ratios (a/b).Results indicate, limit elastic speed increases with an increase in grading indices. In case of an increase in aspect ratio, limit elastic speed increases up to a critical value beyond which it recedes. Also, the objective was to look at the variation of yield stress corresponding to volume fraction variation within the disk which later helps in material tailoring. The study reveals the qualitative variation of yield stress for FG disk with volume fraction, resulting in the possibility of material tailoring from the processing standpoint, in practice.

• 반도체디스플레이기술학회지
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• 제4권3호
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• pp.1-4
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• 2005

Silicon oxynitride films were deposited using ammonia as a nitrogen source via PECVD (plasma enhanced chemical vapor deposition) to study the physical properties of the films. Silane and nitrous oxide were used as silicon and oxygen sources, respectively. The composition of the silicon oxynitride films was well controlled by changing the ratios of the sources and confirmed by XPS. The silicon oxynitride films with high oxygen content showed bigger compressive stress and less refractive index, while the values of surface roughness were around 1 nm, irrespective of the variation of the source ratios.

• 한국학교ㆍ지역보건교육학회지
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• 제4권
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• pp.61-78
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• 2003

This research was conducted to identify the factors that cause school related stress among middle school students, and to develop countermeasures in order to prevent the rebellious acts of middle school students that are on the rise and to pursue after effective guidance measures. To achieve these research objectives, 856 questionnaires were distributed to the two middle schools, situated in Goyang-si, Gyeonggi Province, and these questionnaires were analyzed, using the SPSS statistical package program. The conclusions were as follows; 1. Perceived factors for School Related Stress Overall average of the perceived degree school related stress factors was a level that goes beyond the normalcy. Stress on the grade was the highest Among these, the average of question items that addressed decrease in grade was the highest of all items followed by class factors, teacher-related factors, friend-related factors, and environmental factors. Accordingly, this research demonstrated that the students feel pressured by the university entrace examination and a school life that is focused on grades. The teacher-related factors and class factors were higher than the average, and others were relatively low. 2. School Related Stress according by Individual All the factors for school related stress were statistically significant difference according to the gender, and teacher-related factors, class factors, and environmental factors were statistically significant difference according to their school years. Their grade made their grade factors statistically significant difference, and the number of friends produced a statistically significant difference result on the teacher-related factors. Wheather they had extra classes or not made a statistically significant difference result on the class factors and environmental factors, and especially the time of doing physical exercises produced statistically significant difference on the environmental factors. 3. Countermeasures for School Related Stress according by Individual As for the countermeasures for school related stress according to the individuality, the active reacting was statistically significant difference according to the gender index, and the student's degree to react passively was statistically significant difference according to their grade. The students in different school years showed statistically significant difference reactions in both passive ways and active ways. students tended to react differently in an unreality index. Lastly, Wheather they had extra classes and physical exercises made then to react passively or actively. When the results are compiled, students are most affected by the stress related to grades, which reflected the university entrance examination oriented school life. An alternative is that the development of educational program that factors in the students' talents and aptitude is needed urgently. Moreover, character and career path related guidance and education are just as important as the academics. Given that the stress factors exert some degree of influence on the countermeasures, it is necessary to block the factors in advance and for all the teachers and parents to make an effort to react actively.

• 농촌의학ㆍ지역보건
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• 제45권4호
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• pp.183-193
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• 2020

이 연구는 생태학적 연구로서 EQ-5D index로 측정되는 건강수준의 시군구 단위 변이를 파악하고 지역사회건강조사 지표에서 이러한 변이를 설명하는 요인을 탐색하고자 하였다. 2017년도 지역사회건강조사자료에서 산출되는 전국 229개 시군구의 EQ-5D index 변이는 EQ(격차비) 1.1배, CV(변이계수) 1.0으로 지역 간 변이는 연구에 포함된 독립변수들에 비해 상대적으로 작았다. EQ-5D index 값이 전국 하위 25%에 속하는 시군구 비중이 높은 광역시도는 전라북도(9개 시군, 64.3%)와 충청남도(7개 시군, 46.7%)이었다. 다중 선형회귀분석 결과 지역 간 변이의 주요요인으로 우울감 경험률, 스트레스 인지율, 자살 생각률, 관절염진단 경험률 등이 도출되었다. 지역 간 건강수준의 격차를 줄이기 위해서는 사회심리적 요인들을 포함한 상기 요인들의 개선에 우선순위를 두어야 할 것으로 사료된다.

• Journal of Nutrition and Health
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• 제41권8호
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• pp.786-796
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• 2008

본 연구는 초등학생의 영양소 섭취상태, 식습관, 학업스트레스 및 이들 요인과 학업성취도와의 관계를 분석해보고자 경기도 부천 소재 초등학교 5학년 학생 224명을 대상으로 2007년 7월에 실시하였다. 본 연구대상 학생은 정상범위의 신장과 체중 및 신체충실지수를 나타내고 있었으나 남학생에 비해 여학생에서 마른 학생의 비율이, 여학생에 비해 남학생의 비만율이 더높았다. 영양소 섭취상태는 대부분 권장량 수준으로 섭취하고 있었으며, 단백질, 비타민 A, 비타민 B1는 120% 이상 섭취하고 있었다. 그러나 칼슘 (61%)과 엽산 (66%)은 부족하게 섭취하고 있었으며, 식이섬유소와 칼륨, 엽산의 섭취량은 여학생이 남학생보다 많았다 (p < 0.05). 탄수화물：단백질：지방의 섭취비율과 n-3계열과 n-6계열 지방산 모두 적정량을 섭취하고 있었다. 식습관은 전반적으로 양호하였으으나 남학생이 여학생에 비해 불량한 편이었으며 학업스트레스는 남녀 모두 총 점수의 40% 정도로 스트레스를 적게 받고 있는 것으로 나타났다. 학업성취도는 영양소 섭취상태 (에너지, 단백질, 인, 칼륨, 아연, n-6계열 지방산, 다중불포화지방산)가 좋을수록 (p < 0.05), 식습관점수가 높을수록 좋았다 (p < 0.05). 반면, 외식 빈도수가 적을수록 학업성취도가 높은 경향을 보였다. 학업스트레스는 학업성취도가 높을수록 적게 받고 있었다 (p < 0.01). 본 연구 결과, 학업성취도가 높은 사람일수록 영양소 섭취상태와 식습관이 좋았으며 학업스트레스를 적게 받고 있었다. 따라서 영양교사와 학부모 및 담임교사들은 아동에게 체계적인 영양교육을 실시함으로서 아동의 영양 상태증진 및 올바른 식습관 정립을 통하여 학업성취도 향상에도 일부 기여할 수 있을 것으로 기대된다.