• 대한치과기공학회지
• /
• 제33권4호
• /
• pp.453-466
• /
• 2011

Purpose: This study aims to investigate the general characteristics of dental technicians and their health behaviors and to analyze the related factors of their work stress and physical symptoms. Methods: The survey used structured self administered questionnaires for a survey targeting 741 members registered of the Dental Technician Association in Daegu Metropolitan City from September to October, 2009. Total of 518 replies and analyzed 490 questionnaire excluding 28 incomplete questionnaires. Results: The work stresses were higher in those who answered that they were under 30-years old, unmarried, lower in rank, or had longer work hours, lower monthly incomes or poor self-perceived health status. In addition, those who worked in a dental laboratory with poor work environment including insufficient ventilation, sand blaster with no powder collecting functions, etc., tended to experience higher work stress than others due to their work conditions. The total average of the respondents of the survey who answered that they suffered from some physical symptoms was 14.7 points. It was found that the factors affecting the score of physical symptoms include occupational features such as work hours, monthly income, etc., and physical work environment such as the presence or absence of ventilator, of dust-collectors within sand blaster, etc., and work stress, exerted significant influence. Conclusion: The outcomes of this study indicates that to lessen work stress and to ultimately alleviate physical symptoms, it is necessary to do the following: improve work environment of young unmarried women; adjust their daily working hours; ameliorate physical work environment. To improve overall physical symptoms, it is importance to establish a safe and healthy working environment.

• Child Health Nursing Research
• /
• 제25권4호
• /
• pp.377-387
• /
• 2019

Purpose: The purpose of this study was to examine the correlation between a flexible parental visiting environment and parental stress in neonatal intensive care units (NICUs). Methods: The study participants included 60 parents of premature infants in NICUs. Structured questionnaires and interviews, as well as observations by researchers using a caregiving behavior checklist, were used to measure the flexibility of the parental visiting environment and parents' stress levels. Quantitative and qualitative data were collected concurrently and were initially analyzed as separate data sets. Data collection extended from March 11, 2018 to June 30. 2018 and the data were analyzed using descriptive statistics, the independent t-test, one-way analysis of variance, and Pearson correlation coefficients. Results: There was a negative correlation (r=-.30, p=.021) between parental stress and the total number of visits in 7 days. We also found that the average duration of each visit and the number of caregiving behaviors performed by parents were positively correlated (r=.73, p<.001). Conclusion: When designing a flexible visiting environment for parents, parents should be encouraged to visit their babies. By doing so, stress can be reduced both for babies and for parents. Therefore, it is suggested that the related polices and regulations in South Korea should be changed to provide more a flexible visiting environment to promote better parent-child attachment and family adjustment.

• International Journal of Computer Science & Network Security
• /
• 제22권2호
• /
• pp.318-326
• /
• 2022

Marketing stress testing is a new method of identifying the company's strengths and weaknesses in a turbulent environment. Technically, this is a complex procedure, so it involves artificial intelligence and machine learning. The main problem is currently the development of methodological approaches to the development of the company's digital model, which will provide a framework for machine learning. The aim of the study was to identify and develop an author's approach to the parameterization of the company's business processes for machine learning-based marketing stress testing. This aim provided the company's activities to be considered as a set of elements (business processes, products) and factors that affect them (marketing environment). The article proposes an author's approach to the parameterization of the company's business processes for machine learning-based marketing stress testing. The proposed approach includes four main elements that are subject to parameterization: elements of the company's internal environment, factors of the marketing environment, the company' core competency and factors impacting the company. Matrices for evaluating the results of the work of expert groups to determine the degree of influence of the marketing environment factors were developed. It is proposed to distinguish between mega-level, macro-level, meso-level and micro-level factors depending on the degree of impact on the company. The methodological limitation of the study is that it involves the modelling method as the only one possible at this stage of the study. The implementation limitation is that the proposed approach can only be used if the company plans to use machine learning for marketing stress testing.

• Journal of Ecology and Environment
• /
• 제47권3호
• /
• pp.103-116
• /
• 2023

Background: This study analyzed the physiological adaptations of a woody plant, Vitex rotundifolia, in Goraebul coastal sand dunes from May to September 2022. Environmental factors and physiological of plants growing under field and controlled (pot) conditions were compared. Results: Photosynthesis in plants growing in the coastal sand dunes and pots was the highest in June 2022 and July 2022, respectively. Chlorophyll fluorescence indicated the presence of stress in the coastal sand dune environment. The net photosynthesis rate (P_N) and Y(II) were highest in June in the coastal sand dune environment and July in the pot environment. In August and September, Y(NPQ) increased in the plants in the coastal sand dune environment, showing their photoprotective mechanism. Chlorophyll a and b contents in the pot plant leaves were higher than those in the coastal sand dune plant leaves; however, chlorophyll-a/b ratio was higher in the coastal sand dune plant leaves than in the pot plant leaves, suggesting a relatively high photosynthetic efficiency. Carotenoid content in the coastal sand dune plant leaves was higher in August and September 2022 than that in the pot plant leaves. Leaf water and soluble carbohydrate contents of the coastal sand dune plant leaves decreased in September 2022, leading to rapid leaf abscission. Diurnal variations in photosynthesis and chlorophyll fluorescence in both environments showed peak activity at 12:00 hour; however, the coastal sand dune plants had lower growth rates and Y(II) than the pot plants. Plants in the coastal sand dunes had higher leaf water and ion contents, indicating that they adapted to water stress through osmotic adjustments. However, plants growing in the coastal sand dunes exhibited reduced photosynthetic activity and accelerated decline due to seasonal temperature decreases. These findings demonstrate the adaptation mechanisms of V. rotundifolia to water stress, poor soils, and high temperature conditions in coastal sand dunes. Conclusions: The observed variations indicate the responses of the V. rotundifolia to environmental stress, and may reveal its survival strategies and adaptation mechanisms to stress. The results provide insights into the ecophysiological characteristics of V. rotundifolia and a basis for the conservation and restoration of damaged coastal sand dunes.

• 정보교육학회논문지
• /
• 제24권2호
• /
• pp.177-188
• /
• 2020

본 연구는 플립드러닝 환경에서 초등 교사가 지각하는 테크노스트레스와 관련 변인 간 관계를 살펴보는 데 목적이 있다. 연구 목적 달성을 위한 연구 문제는 다음과 같다. 첫째, 초등 교사가 지각하는 테크노스트레스의 차이는 어떠한가? 둘째, 초등 교사가 지각하는 테크노스트레스 관련 변인의 차이는 어떠한가? 셋째, 초등 교사가 지각하는 TPACK의 정도와 교사효능감, 학교 환경 지원은 테크노스트레스에 어떠한 영향을 주는가? 본 연구를 위하여 플립드러닝 수업을 운영한 경험이 있는 초등 교사 207명을 대상으로 설문조사를 실시하였다. 테크노스트레스, TPACK, 교사효능감, 학교 환경 지원으로 구성된 연구도구를 활용하였으며, 독립표본 t 검정, ANOVA, 중다회귀분석을 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 선도학교에서 근무하는 교사가 지각하는 테크노과부하, 테크노복잡성은 높다. 둘째, 교사의 경력, 선도학교 근무 여부에 따라 TPACK, 교사효능감, 학교 환경 지원의 지각 정도에 차이가 있다. 셋째, TK, TCK, TPACK 그리고 교사효능감의 교육 지원과 학교 환경 지원의 테크놀로지 어포던스는 테크노스트레스와 정적인 관계가 있다. 본 연구의 결과는 플립드러닝 환경에서 초등 교사의 테크노스트레스 감소를 위한 기초 자료를 제시하였다는 점에서 의의가 있다.

• 한국산학기술학회논문지
• /
• 제22권2호
• /
• pp.160-168
• /
• 2021

본 연구는 간호대학생이 경험하는 무례함과 임상실습교육환경이 임상실습스트레스에 미치는 영향을 확인하기 위해 시도하였다. 연구대상자는 임상실습 경험이 있는 3, 4학년 간호대학생 204명이며, 자료는 구조화된 설문지를 배부하고 자가보고하는 형식으로 2019년 4월 1일부터 4월 30일까지 수집되었다. 자료 분석을 위해 SPSS 22.0 program을 이용하여 기술적 통계, t-test, ANOVA, Pearson 상관계수, 다중회귀분석을 실시하였다. 본 연구의 결과는 다음과 같다. 간호대학생이 경험한 무례함의 평균은 1.58점, 임상실습교육환경의 평균은 2.79점, 임상실습스트레스의 평균은 3.33점으로 나타났다. 임상실습스트레스는 간호대학생이 경험한 무례함과 정적 상관관계, 임상실습교육환경과는 부적 상관관계가 있는 것으로 나타났다. 간호대학생이 경험한 무례함과 임상실습교육환경은 부적 상관관계가 있는 것으로 확인되었다. 임상실습 중 경험한 무례함과 임상실습교육환경은 임상실습스트레스에 유의한 영향요인으로 나타났으며 22.5%의 설명력을 보였다. 본 연구결과를 바탕으로 간호대학생들의 임상실습스트레스를 효과적으로 관리하기 위해서는 임상현장에서 경험하는 무례함을 감소시키고 임상실습교육환경을 개선하는 노력이 필요 할 것이다.

• Corrosion Science and Technology
• /
• 제23권4호
• /
• pp.266-277
• /
• 2024

Due to its good corrosion and heat resistance with excellent mechanical properties, 304L stainless steel is commonly used in the fabrication of spent nuclear fuel dry storage canisters. However, welds are sensitive to stress corrosion cracking (SCC) due to residual stress generation. Although SCC resistance can be improved by stress relieving the weld and changing the chloride environment, it is difficult to change corrosion environment for certain applications. Stress control in the weld can improve SCC resistance. Ultrasonic shot peening (USP) needs further research as compressive residual stresses and microstructure changes due to plastic deformation may play a role in improving SCC resistance. In this study, 304L stainless steel was welded to generate residual stresses and exposed to a chloride environment after USP treatment to improve SCC properties. Effects of USP on SCC resistance and crack growth of specimens with compressive residual stresses generated more than 1 mm from the surface were studied. In addition, correlations of compressive residual stress, grain size, intergranular corrosion properties, and pitting potential with crack propagation rate were determined and the improvement of SCC properties by USP was analyzed.

• 한국산학기술학회논문지
• /
• 제18권6호
• /
• pp.449-458
• /
• 2017

본 연구는 요양병원 간호사의 임종간호스트레스, 간호근무환경과 소진 정도를 파악하고, 소진과의 관련요인을 분석하기 위한 서술적 상관관계 연구로, 2016년 10월 1일부터 10월 31일까지 B광역시에 있는 8곳의 요양병원 간호사 195명을 대상으로 임종간호스트레스, 간호근무환경, 소진에 관하여 구조화된 설문지로 자료를 수집하였고, SPSS win 21.0 프로그램을 이용하여 분석하였다. 간호사가 경험하는 대상자의 임종간호스트레스는 평균평점 $3.84{\pm}0.56$이며, 간호근무환경은 평균평점 $3.25{\pm}0.60$이며, 소진 정도는 평균평점 $2.93{\pm}0.52$로 나타났다. 대상자의 임종간호스트레스와 소진과는 상관관계를 보였고 (r=.206, p=.004), 간호근무환경과 소진의 상관관계는 역 상관관계를 보였으며 (r=-.431, p<.001), 소진에 가장 중요한 유의한 변수는 간호직 만족도 (${\beta}=-.302$)이었으며, 간호근무환경 (${\beta}=-.294$), 나이 (${\beta}=.286$), 근무형태 (${\beta}=-.17$), 임종간호스트레스 (${\beta}=.164$)순으로 나타났다. 전체 설명력은 41.2%였다. 따라서 요양병원 간호사의 소진을 최소화하기 위하여 간호사로서의 자긍심과 책임감을 가질 수 있는 지지적인 근무환경 조성 및 인센티브 제공, 효율적인 업무분담과 임종간호교육 프로그램 개발 및 스트레스를 완화할 수 있도록 행정적 차원이 필요하다고 사료된다.

• 한국초등과학교육학회지:초등과학교육
• /
• 제34권2호
• /
• pp.210-223
• /
• 2015

The purpose of this study was to analyze the stresses of teachers for elementary science class. To do these, the Science Teacher Stress Inventory has been developed the Science Teacher Stress Inventory, which consisted of 45 stress factors with subcategories such as student characteristics, teacher characteristics, expertise of science education, school environment, and administrative procedures. 120 teachers for elementary science class have participated in this questionnaire survey. The results of this study are as follow: First, stress from teacher characteristics is perceived as having more stress factors than five stress factors (student characteristics, teacher characteristics, expertise of science education, school environment, and administrative procedures). but all of the five stress factors was under normal. The detail question of stress such as 'Having to guide educational guidance and course in life education', 'Having to cope with the demand of new curricula', 'Pace of the school day is too fast', 'No time to attend training of the experiment (preliminary experiment)', 'Not enough time to complete lesson preparation and marking', 'Having to cope with non-teaching delegated duties', 'Fear of getting injured as a result of lab accidents' are perceived as having a lot of stresses. Second, there were not statistically significant differences in their personal variables such as gender, the course of high school. but there were statistically significant differences in their personal variables such as whether elementary subject exclusive science teacher, career in education experience, teaching grade. Third, coping ways of stresses are active support for better science teaching conditions, training of the experiment for expertise of science education, developing a workbook for science class.

• 대한치과기공학회지
• /
• 제38권3호
• /
• pp.247-256
• /
• 2016

Purpose: This study is to analyse the job seeking stress, to see the relationship Between Job Seeking Stress and career decision-making self-efficacy in students of department of dental technology. Method: For this, the students of department of dental technology in daegu and daejeon and wonkwang university selected at May 2016. A question investigation was used in a entry method of self-estimation. Furthermore a total of 151 person was used as final analysis data. Statical analysis was performed with SPSS 22.0. An analysis of frequency, two sample t-test, one-way ANOVA, Multiple regression was used. Results: Firstly, personal expenses affected beneficially statistically the Job Seeking Stress(p<.05). Secondly, sex, Score, Major satisfaction, personal expenses affected beneficially statistically the career decision-making self-efficacy(p<.05). Thirdly, University environment and academic stress in the Job Seeking Stress affected beneficially statistically the career decision-making self-efficacy(choice target). Conclusion: The study found out that there was significant effect when increased to university environment and academic stress in Job Seeking Stress, the career decision-making self-efficacy was decreased. So the study proved that when helping students facing difficulties due to the career decision-making self-efficacy, it is important to decreased their university environment and academic stress.