• Title/Summary/Keyword: Variance of Analysis

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Influence of post-traumatic stress and compassion competence on the quality of life of emergency medical technicians (119 구급대원의 외상 후 스트레스와 공감역량이 삶의 질에 미치는 영향)

  • Seo, Kawoun;Park, Jung-Hee
    • The Korean Journal of Emergency Medical Services
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    • v.24 no.3
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    • pp.129-140
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    • 2020
  • Purpose: This descriptive correlational study investigated the effects of post-traumatic stress and compassion competence on the quality of life of 119 Emergency medical technicians(EMTs). Methods: The data of 119 EMTs were collected between May 1 and September 30, 2020. Data analysis was performed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and hierarchical multiple regression with SPSS 24.0 program. Results: Post-traumatic stress was seen to be negatively correlated with the quality of life (r=-.456, p<.001) and compassion competence was positively correlated with quality of life (r=.250, p=.006). Participants' subjective health status (β=0.30, p<.001), post-traumatic stress (β=-0.39, p=.001) and compassion competence (β=0.29, p<.001) explained 38.5% of variance in the quality of life of the 119 EMTs. Conclusion: These findings indicate that post-traumatic stress and compassion competence are important factors to improve the quality of life of EMTs. Therefore, systematic programs for reducing post-traumatic stress and enhancing compassion competence levels should be developed.

The Impact of Product Consumption Strategy and Financial Autonomy on Competitiveness of Technology Firms in Vietnam

  • PHAM, Van Thi Hong;NGUYEN, Quynh Thuy
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.4
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    • pp.819-826
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    • 2021
  • This study aims to determine the impact of product consumption strategy and financial autonomy on the competitiveness of technology firms in Vietnam. This study employs panel data of 27 technology firms collected from listed financial statements of the business for the period (2010-2019). The study also uses some indicators reflecting the macroeconomic situation of the economy collected from the World Bank. Instead of Exploratory Factor Analysis which has been used before, the study uses the feasible generalized least squares (FGLS) estimation as the main method. The FGLS corrects the variance changes and autocorrelation on the dataset of these Vietnamese technology firms. The results reveal that the strategy of product consumption and financial autonomy positively affect the competitiveness of technology firms. These are also two core factors of the technology industry, which have a strong impact on the increase in the competitiveness of firms. The findings of this study suggest that technology firms do not need to invest in many long-term assets, but mainly in short-term assets in order to quickly respond to the strategies for consuming new technology products of the business. In addition, the increase in Gross Domestic Product per capita also positively affects the increase in the competitiveness of technology firms.

Optimization fluidization characteristics conditions of nickel oxide for hydrogen reduction by fluidized bed reactor

  • Lee, Jae-Rang;Hasolli, Naim;Jeon, Seong-Min;Lee, Kang-San;Kim, Kwang-Deuk;Kim, Yong-Ha;Lee, Kwan-Young;Park, Young-Ok
    • Korean Journal of Chemical Engineering
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    • v.35 no.11
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    • pp.2321-2326
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    • 2018
  • We evaluated the optimal conditions for fluidization of nickel oxide (NiO) and its reduction into high-purity Ni during hydrogen reduction in a laboratory-scale fluidized bed reactor. A comparative study was performed through structural shape analysis using scanning electron microscopy (SEM); variance in pressure drop, minimum fluidization velocity, terminal velocity, reduction rate, and mass loss were assessed at temperatures ranging from 400 to $600^{\circ}C$ and at 20, 40, and 60 min in reaction time. We estimated the sample weight with most active fluidization to be 200 g based on the bed diameter of the fluidized bed reactor and height of the stocked material. The optimal conditions for NiO hydrogen reduction were found to be height of sample H to the internal fluidized bed reactor diameter D was H/D=1, reaction temperature of $550^{\circ}C$, reaction time of 60 min, superficial gas velocity of 0.011 m/s, and pressure drop of 77 Pa during fluidization. We determined the best operating conditions for the NiO hydrogen reduction process based on these findings.

Performance of Six-Layered Cross Laminated Timber of Fast-Growing Species Glued with Tannin Resorcinol Formaldehyde

  • Deazy Rachmi TRISATYA;Adi SANTOSO;Abdurrachman ABDURRACHMAN;Dina Alva PRASTIWI
    • Journal of the Korean Wood Science and Technology
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    • v.51 no.2
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    • pp.81-97
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    • 2023
  • The aim of this study were to evaluate tannin resorcinol formaldehyde (TRF) for the preparation of cross-laminated timbers (CLTs) made from fast-growing tree species and to analyze the physical and mechanical properties of CLTs. TRF copolymer resin was prepared by using the bark extracts of Swietenia mahagoni (L.) Jacq. It was observed that the TRF adhesive possessed less solid content (23.59%), high viscosity (11.35 poise), and high pH values (10.0) compared to the standard phenol resorcinol formaldehyde. The TRF adhesive was applied to produce CLTs with the addition of 15% tapioca and flour as an extender. The six-layered CLTs were produced from sengon (Falcataria moluccana Miq.), jabon [Anthocephalus cadamba (Roxb) Miq.], coconut (Cocos nucifera L.), and the combination of coconut-jabon and coconut-sengon wood. The analysis of variance revealed that the layer composition of CLT significantly affected the physical and mechanical properties of the beam. While the modulus of rupture met the standard, the moisture content and modulus of elasticity values did not fulfill JAS 1152-2007. All of the CLTs produced in this study demonstrated low formaldehyde emission, ranging from 0.001 mg/L to 0.003 mg/L, thereby satisfying the JAS 1152 for structural glue laminated timber.

Relation between clinical learning environment and clinical performance competency in dental hygiene students (치위생대학생의 현장실습교육환경과 임상수행능력 간의 관계)

  • Hae-Kyung Hong;Young-Nam Kim;Gyeong-Soon Han
    • Journal of Korean society of Dental Hygiene
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    • v.23 no.6
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    • pp.501-509
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    • 2023
  • Objectives: This study aimed to analyze the relation between factors related to the clinical performance competency of dental hygiene students and their clinical learning environment. Methods: The study conducted a survey of dental hygiene students from October 18 to 30, 2023. The data were analyzed using one way analysis of variance, t-test, and stepwise multiple regression. Results: The total practicum lasted ≤10 weeks, 11-15 weeks, and ≥16 weeks for 41.7%, 33.5%, and 24.8% of the students, respectively. Half of them had experience at only one clinical institution. Clinical learning environment had an average score of 3.46 points, whereas the average clinical performance competency of the participants was 3.60 points. The major influencing factors on clinical performance competency were identified as preceptor' s guidance (β=0.277), work participation opportunities (β=0.213), and perceived importance of clinical practice (β=0.136). Conclusions: Efforts are required to provide students with prior education on the importance of clinical practice, improve the clinical learning environment with a focus on preceptor's guidance and work participation opportunities. And standardize various elements to resolve differences in the practice of clinical institutions across regions.

Satisfaction of Foodservice and Eating Behavior of Male Military Personnel in Backryung-do (백령도 주둔 신세대 장병의 군급식 만족도 및 식행동)

  • Choi, Doo-Young;Lee, In-Sook
    • Journal of the East Asian Society of Dietary Life
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    • v.22 no.5
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    • pp.576-584
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    • 2012
  • The purpose of this study was to provide basic references in order to improve the quality of military foodservice by investigating the eating behavior, preferred items for improvement and foodservice satisfaction of male military personnel in Backrung do. A total of 213 male military personnel (66 sergeants, 44 corporals, 80 privates first class and 27 privates third class) responded to a survey questionnaire. Frequencies, t tests, analysis of variance, and Cronbach's alpha, were carried out by SPSS Win V.18.0. The results of the study were as follows. The satisfaction level of military foodservice was slightly below 3 out of 5 points, and Korean cuisine was the favorite food. Military male personnel preferred frying and stewing as their favorite cooking methods. Sixty-six percent of subjects answered that their favorite principal ingredients were meat and fish. Therefore, as young soldiers' taste preferences were westernized, proper nutrition education programs for good health are needed. Further, the current military dining environment should be changed into a quiet and neat atmosphere, with clean dishes, nutritious meal items, and quick and proper serving methods, etc. Based on the results above, military authorities should develop an adequate menu for the male military personnel at Backrung do military base that includes a variety of foods, and cooking methods.

The Relationships of Work-Family Conflict, Social Support, Job Satisfaction, and Organizational Commitment in Korean Married Hospital Nurses (기혼 간호사의 직장-가정 갈등, 사회적 지지, 직무만족도 및 조직몰입간의 관계)

  • You, Mi-Ae;Son, Youn-Jung
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.16 no.4
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    • pp.515-523
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    • 2009
  • Purpose: The purpose of this study was to examine the relationship between work-family conflict, social support, job satisfaction, and organizational commitment which are closely linked to staff turnover from the perspective of married hospital nurses. Method: A survey was conducted using self-report structured questionnaire from 220 married nurses. Data analysis included descriptive statistics, t-test, one-way ANOVA, correlation and multiple linear regression with SPSS Win 17.0 program. Results: Job satisfaction, social support, work-family conflict and age were strong predictors of organizational commitment. These variables explained 46.5% of the variance of the organizational commitment. Higher levels of organizational commitment were associated with greater job satisfaction and social support. Nurse with lower levels of work-family conflict and older age reported a high level of organizational commitment. Conclusion: These results show that improving job satisfaction has the best effect on enhancing nurses' organizational commitment. Also supportive relationships, reduction of work-family conflict and older age were significantly correlated with organizational commitment. Organizations should design more family-friendly policies and provide opportunities for career development to health professionals to induce organizational commitment.

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The Influencing Factors on Health Related Quality of Life(HRQOL) in Married Working Women (기혼 직장여성의 건강관련 삶의 질에 영향을 미치는 요인)

  • Son, Youn Jung
    • Korean Journal of Adult Nursing
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    • v.19 no.3
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    • pp.422-435
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    • 2007
  • Purpose: The purpose of this study is to identify the factors that influence HRQOL for married working women. Methods: The subjects of the study were 577 full-time working married women living in five province. The data were collected using a structured questionnaire, from April to September 2006. Results: As for the general characteristics, there was a statistically significant difference in the level of HRQOL(total) according to age, education, menopause, family income, leisure activities, residence, duration of marriage, number of children, firstborn age, household duties of husband, job, career, type of work, women's income, and purpose of working. The level of HRQOL showed a statistically significant difference according to BMI and behavioral factors except for caffeine intake and follow up health screening. The HRQOL were significantly correlated with depression, marital satisfaction and job satisfaction. The multiple regression analysis showed that the HRQOL were significantly predicted by depression, marital satisfaction, education, regular exercise, daily working hours and job satisfaction. These variables explained 48.5% of the variance of HRQOL. Depression was the main predictor of HRQOL. Conclusion: It could be concluded that nursing intervention to reduce depression should be developed to promote the HRQOL for married working women.

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A Prediction Model of Drug Misuse Behaviors in Community-Dwelling Older Adults (재가노인의 약물오용행위 예측모형)

  • Hong, Se Hwa;Yoo, Kwang Soo
    • Journal of Korean Academy of Nursing
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    • v.46 no.5
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    • pp.630-641
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    • 2016
  • Purpose: This study was designed to construct a model which explains drug misuse behaviors in community-dwelling older adults. Methods: The design of this research is a cross-sectional study using structure equation modeling. The hypothetical model consisted of two types of variables: the exogenous variables of health status, cognitive ability, and negative emotion, and the endogenous variables of number of drugs, and drug misuse behaviors. The data collection was conducted from September 2 to September 21, 2013 through self-report questionnaires. Participants were 320 community-dwelling adults over the age of 65 living in J city. Data were analyzed with SPSS 21.0 program and Amos 18.0 program. Results: The results of the model fitness analysis were satisfied. The predictor variables for the hypothetical model explained 62.3% of variance regarding drug misuse behaviors. Drug misuse behaviors were directly affected by health status, cognitive ability, negative emotion and number of drugs and indirectly affected by health status, and negative emotion through number of drugs. Conclusion: These findings indicate factors that should be used in developing effective nursing interventions for safe and proper drug use and the prevention of drug misuse behaviors in community-dwelling older adults.

Application of Taguchi Method and Orthogonal Arrays for Optimization of Adhesion of $SrZrO_3$ Coatings on Ag/Bi(2223) Tapes

  • Lee, Se-Jong;Lee, Deuk-Yong;Song, Yo-Seung;Kim, Bae-Yeon
    • Progress in Superconductivity and Cryogenics
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    • v.5 no.1
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    • pp.13-16
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    • 2003
  • Adhesion of $SrZrO_3$ resistive oxide barrier on Ag sheathed Bi(2223) tapes prepared by the sol-gel and dip-coating method was evaluated with an aid of Taguchi method and Lie($2^1{\times}3^7$) orthogonal arrays to determine the optimal process combination of levels of factors that best satisfy the bigger is better quality characteristic (QC=B). For analyses of results statistical calculations such as average and analysis of variance (ANOVA) were employed to analyze the results for improving the performance qualities of the dip-coated $SrZrO_3$ film. Experimentally, the performance of the films was evaluated in terms of bond strength by varying Sr/Zr moi ratio (A), amount of organic vehicle additives (B), drying temperature (C) and time (D), heat treatment temperature (E) and time (F), respectively. The optimal combination of levels of factors was determined to be $A_3B_2C_3D_2E_1F_3$ having a 90% confidence level.