• Journal of Convergence for Information Technology
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• v.9 no.9
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• pp.258-268
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• 2019

The purpose of this study was to investigate the effects of stress factors on fatigue and depression of aesthetician. The subjects of this study were 133 Aesthetician in Busan Metropolitan City. Analysis was done by frequency analysis, t-test, one-way ANOVA and regression analysis. The results of this study are as follows. First, the aesthetician showed an average 2.57 of job stress. Second, the aesthetician showed an average 2.45 of socio-psychological stress. Third, the aesthetician showed an average fatigue(4.16) and depression(1.54). Therefore, in order to reduce the duties and socio-psychological stress of the aesthetician, fatigue and depression are reduced through regularization of the employees, adjustment of legal working hours, and establishment of similar paying system. Finally, it is necessary to lower the turnover rate of the aesthetician and increase the job satisfaction.

• Journal of Convergence for Information Technology
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• v.11 no.7
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• pp.223-231
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• 2021

The study analyzes the relationship between job stress, organizational trust, and the job change intentions of beauty industry workers. Three-hundred sixty-nine workers in the beauty industry with longer than three months of working experience were chosen as this study. The study used to perform frequency analysis, exploratory factor and reliability, correlation, confirmation, and structural equation model verification. The following results are as follows. First, job stress had a positive influence. Second, stress related to fairness had a negative effect on organizational trust. Third, organizational trust had a negative effects. In conclusion, organizational trust and stress related to fairness are the important variables. Furthermore, this study suggests that each organization needs to make an effort to increase organizational trust and to relieve stress related to fairness in order to reduce the job change intentions.

• Journal of Korean society of Dental Hygiene
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• v.22 no.3
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• pp.199-207
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• 2022

Objectives: The objectives of this study were to find the influential factors of dental hygienists' work environment and level of perception of rights on their retention intention, and to provide basic data for protecting their rights and interests and improving their employment rate. Methods: From June 6 to July 24, 2021, a questionnaire survey was conducted among 214 dental hygienists via an online link. After questionnaire collection, IBM SPSS program (ver. 21.0; IBM Corp., Armonk, NY, USA) was used to conduct frequency analysis, t-test, one-way ANOVA and multiple regression analysis. Results: The significant and positive influential factors of dental hygienists' retention intention were married individuals (p=0.022), fewer working hours (p<0.001, p=0.007), good work environment (p=0.002), higher wages (p<0.001, p<0.001), higher education (p=0.032), and perception of rights in a mid-level (p=0.038). Conclusions: It is necessary to consider wages and welfare equivalent to dental hygienists' work intensity and workload. By regularly educating dental hygienists to increase their perception of rights, expanding an opportunity of participation, and improving their work environment, it will be possible to increase their retention intention and efficiently establish manpower in dental clinics.

• Journal of Korean Academy of Dental Administration
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• v.6 no.1
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• pp.43-47
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• 2018

Online data can be explored for topics browsed by an unspecified population to detect professional information demands more quickly. The purpose of this study was to collect and analyze online questionnaires in order to find information required by dental hygienists. We analyzed the frequency of posting words after isolating nouns from questions of the Korean Dental Hygienists Association homepage's Q & A section, the Naver Knowledge-iN service, and a dental hygienists' online meeting site in Naver. We found that queries of the Korean Dental Hygienists Association's homepage were concentrated on education renewal and license notification. The queries about dental hygienists in the Naver Knowledge-iN service used words related to job or career choice, and the queries of the dental hygienist-affiliated site had many words related to dental practice, dental work, and turnover. This study showed that the information needs of unspecified dental hygienists varied depending on the online environment such as homepage, blog, and information service.

• Korean Chemical Engineering Research
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• v.50 no.2
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• pp.229-237
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• 2012

Phosphorus was incorporated into Co/$Al_2O_3$ catalyst for FTS by impregnating an acidic precursor, phosphoric acid, in ${\gamma}-Al_2O_3$ support to improve the mechanical strength, the hydrothermal stability of the catalyst particle, and the catalytic performance as well. Surface characterization techniques such as FT-IR revealed that $AlPO_4$ phase was generated on the surface of the P-modified catalyst. The addition of phosphorus was found to alleviate the interaction between cobalt and alumina surface, and to increase reducibility of catalyst. The catalytic activity such as $C_{5+}$ productivity and turnover frequency (TOF) was calculated to evaluate catalytic performance. The influence of calcination temperature of the $Al_2O_3$ containing 2 wt.% P on the catalytic performance was also investigated. Through hydrothermal stability test and XRD analysis, the P-modified catalyst had strong resistant to the pressurized and hot $H_2O$. The mechanical strength of the P-modified catalyst was also examined through an in-house fluidized-bed vessel, and it was found that the catalyst fragmentation could be successfully suppressed with P. Taken as a whole, the best performance was shown to be at 1~2 wt.% P in alumina and at the calcination temperature of $500^{\circ}C$.

• Clean Technology
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• v.21 no.1
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• pp.68-75
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• 2015

In this study, we investigated the structure and properties of a highly heat conductive metal-ceramic core-shell CoAl₂O₄@Al micro-composite for heterogeneous catalysts support. The CoAl₂O₄@Al was prepared by hydrothermal surface oxidation of Al metal powder, which resulted in the structure with a high heat conductive Al metal core encapsulated by a high surface area CoAl₂O₄ shell. For comparison, CoAl₂O₄ was also prepared by co-precipitation method and also utilized for a catalyst support. Rh catalysts supported on CoAl₂O₄@Al and CoAl₂O₄ were prepared by incipient wetness impregnation and characterized by N₂ adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), CO chemisorption, and temperature-programmed reduction (TPR). The properties of catalysts were investigated for glycerol steam reforming reaction for hydrogen production at 550 ℃. Rh/CoAl₂O₄@Al exhibited about 2.8 times higher glycerol conversion turnover frequency (TOF) than Rh/CoAl₂O₄ due to facilitated heat transport through the core-shell structure. The CoAl₂O₄@Al and CoAl₂O₄ also showed some catalytic activities due to a partial reduction of Co on the support, and a higher catalytic activity was also found on the CoAl₂O₄@Al core-shell than CoAl₂O₄. These catalysts, however, displayed deactivation on the reaction stream due to carbon deposition on the catalysts surface.

• Journal of Practical Agriculture & Fisheries Research
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• v.23 no.2
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• pp.71-86
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• 2021

This study was conducted to find information on the university's image from words related to 'Korea National College of Agriculture and Fisheries (KNCAF)' in Naver News. For this purpose, word frequency analysis, TF-IDF evaluation and semantic network analysis were performed using web crawling technology. In word frequency analysis, 'agriculture', 'education', 'support', 'farmer', 'youth', 'university', 'business', 'rural', 'CEO' were important words. In the TF-IDF evaluation, the key words were 'farmer', 'dron', 'agricultural and livestock food department', 'Jeonbuk', 'young farmer', 'agriculture', 'Chonju', 'university', 'device', 'spreading'. In the semantic network analysis, the Bigrams showed high correlations in the order of 'youth' - 'farmer', 'digital' - 'agriculture', 'farming' - 'settlement', 'agriculture' - 'rural', 'digital' - 'turnover'. As a result of evaluating the importance of keywords as five central index, 'agriculture' ranked first. And the keywords in the second place of the centrality index were 'farmers' (Cc, Cb), 'education' (Cd, Cp) and 'future' (Ce). The sperman's rank correlation coefficient by centrality index showed the most similar rank between Degree centrality and Pagerank centrality. The KNCAF articles of Naver News were used as important words such as 'agriculture', 'education', 'support', 'farmer', 'youth' in terms of word frequency. However, in the evaluation including document frequency, the words such as 'farmer', 'dron', 'Ministry of Agriculture, Food and Rural Affairs', 'Jeonbuk', and 'young farmers' were found to be key words. The centrality analysis considering the network connectivity between words was suitable for evaluation by Cd and Cp. And the words with strong centrality were 'agriculture', 'education', 'future', 'farmer', 'digital', 'support', 'utilization'.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.6
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• pp.2613-2618
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• 2014

Aims: Dysfunction of the host immune system in cancer patients can be due to a number of factors, including lymphocyte apoptosis. Several studies showed that $Foxp3^+T$ cells take part in inducing this process by expressing FasL in tumor patients. However, the relationship between apoptosis, $CD8^+T$ cells and $Foxp3^+T$ cells in HCC patients is still unclear. The present study was designed to investigate the correlation between apoptosis levels and Fas/FasL expression in $CD8^+T$ lymphocytes and $Foxp3^+T$ cells in patients with HCC. Methods: $CD8^+T$ cells and $CD3^+Foxp3^+T$ cells were tested from peripheral blood of HCC patients and normal controls and subjected to multicolor flow cytometry. The expression of an apoptosis marker (annexin V) and the death receptor Fas in $CD8^+T$ cells and FasL in $CD3^+Foxp3^+T$ cells were evaluated. Serum TGF-${\beta}1$ levels in patients with HCC were measured by enzyme-linked immunosorbent assay. The relationship between apoptosis and Fas expression, as well as FasL expression in $CD3^+Foxp3^+T$ cells was then evaluated. Results: The frequency of $CD8^+T$ cells binding annexin V and Fas expression in $CD8^+T$ cells, were all higher in HCC patients than normal controls and the proportion of apoptotic $CD8^+T$ cells correlated with their Fas expression. Serum TGF-${\beta}1$ levels correlated inversely with $CD3^+Foxp3^+T$ cells. Conclusions: Fas/FasL interactions might lead to excessive turnover of $CD8^+T$ cells and reduce anti-tumor immune responses in patients with HCC. Further investigations of apoptosis induction in $Fas^+CD8^+T$ cells in vitro are required.

• The Journal of the Korea Contents Association
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• v.15 no.4
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• pp.234-245
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• 2015

This study was to investigate the effects of interpersonal relationships on job satisfaction of home-visiting care helpers and the category of interpersonal relationships was subdivided into elderly clients, guardians, colleagues and directors considering the person-to-person nature of home-visiting care helper's job characteristics. A group of 336 care helpers who engaged in home-visiting care service providing facilities in Daejeon City was selected as a research subject, and the data were analyzed with SPSS 22.0 program using reliability, frequency, correlation and hierarchical multiple regression. The results for the final analysis revealed that the effect of socio-demographic features was not significant while, among characteristics of job performances, work priority, turnover experience, and career choice reasons turned out to have significant impacts on job satisfaction. In particular, interpersonal relationships except the one with guardians were found to be the most influential variables and the effects of those relationships on job satisfaction were significant. The influencing power was stronger in relationships with director, elderly clients, and colleagues in order, and the job satisfaction level was higher as they were in better relationships with director, elderly clients, and colleagues. The results of this research shows that it is necessary to set an atmosphere where harmonious interpersonal relationships can be formed inside and outside of facilities in order to improve job satisfaction of home-visiting care helpers.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.5 no.2
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• pp.324-340
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• 1998

Nurses experience role conflict between nursing theory that they learned in school and clinical nursing practice. This conflict lead to lower self-image, self-esteem, job dissatisfaction. Also, the professionalism of nurses is estimatable by the grade of autonomy. The professional autonomy requires individual and professional obligation about her decision and performance. A lack of professional autonomy results in the Job dissatisfaction. Job dissatisfaction leads to absenteeism, increased proneness to mental and physical illness and higher turnover rates. The purpose of this study was to investigate professional autonomy and self-concept of clinical nurses. Data were collected from 262 clinical nurses in P city from June 1 to June 30, 1996. The instruments used for this study were made by Arthur(1990) and Schutzenhofer(1983). The data were analyzed for frequency and percetage, mean, SD, t-test, ANOVA, Pearson's correlation coefficient, stepwise mutiple regression, using SAS $PC^+$ Program. The findings were as it follows : 1. The mean of professional autonomy and self-concept were $152{\pm}18.48,\;70.65{\pm}8.20$(2.62), respectively. These showed mid level of professional autonomy and self-concept. 2. Professional autonomy of clinical nurses was found to vary significantly according to total years of clinical experience(F=4.49 p<0.01), position(F=3.49 p<0.05), and state under study for the degree(F=3.83 p<0.05). Professional self-concept was found to vary significantly according to age(F=3.52 p<0.05), marital status(F=7.39 p<0.001), total years of clinical experience(F=3.59 p<0.05), position(F= 5.22 p<0.01), the expectant period being on the duty as clinical nurse(F=8.34 p<0.001), and motivation of choosing nursing(F=5.17 p<0.001). 3. The statistical relationship between clinical nurses' professional autonomy and self-concept was found as positive correlation(r=0.42246 p<0.001). 4. Professional autonomy was the highest factor predicting professional self-concept(17.85%). Professional autonomy and marital status accounted for 20.60% in professional self-concept of clinical nurses. In conclusion, Professional autonomy and self-concept of clinical nurses showed significantly positive relationship. Therefore, nursing education needs to develop programs and policies to increase professional autonomy and self-concept of clinical nurses.