• Title/Summary/Keyword: Factor Regression Model

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A Study on Factors Effecting the Hair Care of Female University Students (여대생의 모발건강관리행위에 영향을 미치는 요인에 관한 연구)

  • Cho, Sung-Sun;Moon, In-Ok
    • The Journal of Korean Society for School & Community Health Education
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    • v.3
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    • pp.1-13
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    • 2002
  • Female university students generally have a lower intake of nutrition compared to other age groups due to their adverse interests in their appearance. Drinking, smoking, too much weight control, accumulation of psychological and physical stress are causes of inadequate diet. The result is deterioration of hair health. Establishment of good diet and hair care is the foundation of a healthy hair in adulthood. For this reason, there is a great need for a healthy hair care. The data from a questionnaire survey was analyzed with 800 female undergraduate students responding. Seventeen universities were included in the study, 8 of which were from Seoul, 6 from other large cities and 3 from smaller towns. The objective of this study is to investigate the correlations of these factors and to provide preliminary data for developing an effective hair care education program. Results include the following: 1. Knowledge score of hair care based on general characteristics were higher for students in larger cites compare to small cites or regions. Also, students in higher academic year, more allowance, interest in their apparence and family income showed higher knowledge in this field. These factors had meaningful effect on the statistics of this study. 2. Attitude score towards hair care based on general characteristics were higher for students in larger cites compare to small cites or regions. Also, students in higher academic year, more allowance, interest in their apparence and family income showed higher knowledge in this field. These factors had meaningful effect on the statistics of this study. 3. Behavior score towards hair care was higher for students with greater family income, allowance, interest in appearance. These factors had meaningful effect on the statistics of this study. 4. The correlation study between knowledge, attitude and behavior showed that higher the knowledge and attitude, better the behavior. 5. The analysis of factors effecting hair care behavior showed that interest in health, acknowledgement of current hair condition, total family income were a viable factor in predicting hair care behavior. The predictability of regression model is 38.9 %($R^2$) Therefore, in order to maximize the hair care behavior, consistent and systematic study should be earned out to develope an effective education program to improve health interest.

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Determinants of Length of Stay in Geriatric Hospitals - Focused on Alzheimer Dementia's Inpatients (요양병원 입원 알츠하이머 치매노인의 재원일수 결정요인 분석)

  • Bang, Hyo-Jung;Lee, Kwang-Soo
    • The Journal of the Korea Contents Association
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    • v.13 no.12
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    • pp.900-909
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    • 2013
  • This study purposed to analyze the determinants of length of stay for patients having alzheimer dementia in geriatric hospitals. Sample data was collected from the National Patient Sample (NPS) produced by the Health Insurance Review & Assessment Service (HIRA) in 2009. Total 538 alzheimer inpatients over 65 years were used in the analysis. Patients were classified into 5 risk groups to represent the case-mix differences of patients. Organizational characteristics of geriatric hospitals such as number of beds, doctors, and nurses were included in the analysis model. In multivariate regression analysis, hospital variables were not statistically significant in explaining the length of stay. Two risk group were statistically significant in analysis, However, their signs of relationship with the dependent variable were opposite to the expectations. These results suggest that the characteristics of patients and hospitals did not have impacts on the length of stay. There will be needs to test the effects of other factor such as social needs which represents the socio-economic status of the family for the patients.

A Study on the Accelerated Life Test of BLDC Motor in Ceiling Mounted Digital Signage Rotating System (천정 거치형 디지털 사이니지 회전 시스템의 BLDC모터 가속수명시험에 관한 연구)

  • Kim, Ki-Hong;Kwon, Soon-Hong;Kwon, Soon-Gu;Park, Jong-Min;Kim, Jong-Soon;Jung, Sung-Won;Choi, Won-Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.21 no.3
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    • pp.141-147
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    • 2018
  • In a time when product development cycles are getting shorter and shorter, many companies are making efforts to develop products with high reliability in a short period of time, accelerated life test is widely used as a method to quickly evaluate reliability. Accelerated life test reduces the test life or the life of the product from the observed data by shortening the lifetime of the product or abruptly lowering the performance under the worse condition than the actual condition in order to shorten the test cost or the test time. In this paper, BL3640A-06P+RB35, DC12V model, which is used in the support device of an automatic rotation type digital signage, which display various information such as textures and images on a display screen in a public place or a commercial space, BLDC motors were subjected to a constant stress test and at the rotational speed of 1rpm, $180^{\circ}$ rotation and reverse rotation under actual use conditions, the stress was imposed on the rotating speed of 2rpm and the weight of the actual installed product from 22.2kgf to 10kgf were installed. The lifetime of the actual use environment condition is 23,545 hours and the rotation speed is accelerated. The life time of the acceleration condition with the additional weight is 1,380 hours. The acceleration factor is calculated as 17.06, the one year guarantee test day is 235 days to 14 days, of the period from 470 days to 28 days, and the third year from 704 days to 42 days. The test date of the BLDC motor was tested on the shortened test date, and the rotational speed and the current value were measured. It is found that there is no defect even if it operates as the test date corresponding to the specified one year warranty period and the 3 year accelerated life test which is experimented. Using the statistical technique of the regression analysis the expected time for the motor to defect to #4 samples was 20 years.

The factors affecting therapeutical diversification of domestic pharmaceutical companies in Korea (국내 제약기업의 치료제 질환분야 다각화 결정요인)

  • Jung, Seung-Yeon;Lee, Sang-Won
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.10
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    • pp.490-497
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    • 2018
  • This study is to identify factors influencing therapeutic diversification strategy for Korean pharmaceutical companies. So, it purposes to find deciding factors for companies to adopt strategy for diversification or specialization. In this paper, we set six factors that are expected to influence diversification. The factors are asset scale, sales, profitability, and growth potential. Also, we included number of employees and SG&A cost ratio as factors that reflect business characteristics. We analyzed the impacts of each factor on diversification and found a relationship amongst each other. In this paper, regression analysis is applied with forward selection method, considering that it takes 5 years for companies to decide on diversification strategy. As a result, asset scale, the number of employees and profitability have significantly influenced decisions of diversification at t-1 time, and growth potential was significantly influenced at t-2 time. Korean pharmaceutical companies generally tend to go with specialization model if they have larger asset scale, higher profitability and growth potential. However, they have tendency to decide on diversification strategy, if they have large number of employees. Overall, the result of this study is expected to provide useful information for Korean pharmaceutical companies to set the suitable strategy for their situation to become a competitive company in global pharmaceutical market.

Path Dependence in Industry-University Cooperation - In terms of Industry's Voluntary Participation (산학협력에서 경로 의존성에 대한 연구 - 산업계의 자발적 참여 관점)

  • Han, Sang-Seol;Yim, Duk-Soon
    • The Journal of Industrial Distribution & Business
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    • v.9 no.3
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    • pp.45-56
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    • 2018
  • Purpose - The Korean university education system is facing innovation and change, including cooperation between industry and university, Therefore It is important to activate the industry-university cooperation. This paper aims to demonstrate the factors that activate industry-university cooperation, particularly about the voluntary participation induction by industry and researching in path dependency perspectives. Research design, data, and methodology - The subject of this research were companies that are aware of the industry-university cooperation program. This research hypothesis is derived from the literature of previous studies of industry-university cooperation, This study have constructs that was defined operationally with reference to previous studies, this research model design to figure out structural relationship among technology leadership of university, university specialization, local network strength, fixation of local economy, recognition of path dependence, participation by industry, performance of industry-university cooperation. From 2017 July. 1 to Sept. 31, questionnaire survey targeting company staff who is involving in industry-university cooperation. 257 questionnaire survey had conducted. 249 investigated data were used for empirical analysis except wrong data. This data were used for AMOS(structural equation) & Regression statistics to verify hypothesis which developed by researcher. Results - The results of this study are as follows. First, technology leadership of universities has a significant effect on voluntary participation by industry. University specialization has significant effect on voluntary participation by industry. Second, local network strength has significant effect on voluntary participation by industry. but fixation of local economy does not affect voluntary participation by industry. Third, recognition of path dependence has moderating effect between Independent(university, company characteristics) and dependent variables(voluntary participation by industry) When recognition level of path dependence is high, preceding factors have a significant effect on voluntary participation by industry than recognition level of path dependence is low. As a result, the degree of recognition of path dependence was shown important variables that induce voluntary participation of industry for industry-university cooperation program. Conclusions - This study suggests that voluntary participation of industry is a very important factor in the achievement of industry-university cooperation. Recognition of interdependence as well as leading factors that encourage voluntary participation of industry is also just as important. If recognition of path dependence was high, Industry's voluntary participation was high.

The Influence of Calling on School Organizational Commitment of School Health Nurses (보건교사의 소명의식이 학교조직몰입에 미치는 영향)

  • Kim, Hyo Soon;Lee, Yoonshin;Kim, Ok Sun;Sok, Sohyune
    • The Journal of the Korea Contents Association
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    • v.20 no.10
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    • pp.535-543
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    • 2020
  • With the emergence of new infectious diseases and changes in the educational environment, the health problems of school-age students are increasing. Accordingly, the role of school health teachers is expanding and becoming more important. The study was to examine the effect of calling on school organizational commitment of school health nurses. Samples were a total of 143 school health nurses working in elementary, middle, and high schools, Gyeonggi-do, South Korea who understood the purpose of this study and voluntarily participated in the study. Measures were Calling and Vocation Questionnaire-Korea (CVQ-K) and organization commitmen questionnaire. Data were analyzed using SPSS/WIN 23.0 program. The analyses showed that the prediction model for school organizational commitment of school health nurses was significant (F=16.142, p<.001). The value of the adjusted R2 was 0.307, which corresponds to the explanatory power of 30.7%. The factor that was found to have the most influence on school organizational commitment of school health nurses was purpose/meaning (β=.28, p=.011), followed by number of classes (β=-.20, p=.006). In order to improve the school organizational commitment of school health nurses, the purpose/meaning and the number of classes should be considered.

Affecting Factors of Insulin Resistance in Obese Children and Adolescents (소아 및 청소년 비만증에서 인슐린 저항성에 미치는 요인)

  • Kim, Duk Hee;Eun, Ho Seon;Choi, In Kyung;Kim, Ho Seung;Cha, Bong Soo;Kim, Dong Kee
    • Clinical and Experimental Pediatrics
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    • v.48 no.10
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    • pp.1076-1081
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    • 2005
  • Purpose : Insulin resistance is the most important risk factor linked to the development of impaired glucose tolerance(IGT), diabetes mellitus and cardiovascular diseases in childhood and adolescent obesity, The purpose of this study was to see whether insulin resistance of obese adolescent is higher than that of obese children. and to analyze gender difference and affecting factors of insulin resistance. Methods : Of the 9,837 school children from 5 to 16 tears old, 92 obese children and 187 adolescent, underwent a two-hour oral glucose tolerance test and plasma glucose, insulin, lipid profiles, leptin and high sensitive C-reactive protein(hs-CRP) were measure. Results : Plasma insulin levels of female were higher compared to those of males during oral glucose tolerance test(P<0.05). Four(4.3%) in obese children and twenty five(13.3%) in obese adolescents met the criteria of IGT. Female, leptin, adiponectin and triglyceride concentrations were strongly correlated with homeostatic model assessment insulin-resistance(HOMA-IR) by multiple linear regression analysis(P<0.05). Conclusion : Obese adolescents might have higher insulin concentrations compared to obese children and obese girls higher insulin concentrations than obese boys. Obese boys and children with impaired glucose tolerance have higher insulin concentrations than those with normal glucose tolerance. HOMA-IR was significantly correlated with female, plasma leptin, adiponectin and triglyceride concentrations.

Assessment of Relationship between Fyn-related Kinase Gene Polymorphisms and Overweight/Obesity in Korean Population

  • Jung, Mi-Young;Kim, Bum-Shik;Kim, Youn-Jung;Koh, In-Song;Chung, Joo-Ho
    • The Korean Journal of Physiology and Pharmacology
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    • v.12 no.2
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    • pp.83-87
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    • 2008
  • The fyn-related kinase (FRK) belongs to the tyrosine kinase family of protein kinases. Recent studies have shown that Frk affects pancreatic beta cell number during embryogenesis and promotes beta cell cytotoxic signals in response to streptozotocin. To investigate the genetic association between FRK polymorphisms and the risk of obesity in Korean population, single nucleotide polymorphisms (SNPs) in the FRK gene region were selected and analyzed. The body mass index (BMI) was calculated, and biochemical data (systolic blood pressure, diastolic blood pressure, hemoglobin A1C, triglyceride, total cholesterol, high density lipoprotein, and low density lipoprotein) of blood sample from each subject were also measured. One hundred fifty five healthy control and 204 overweight/obesity subjects were recruited. Genotype frequencies of six SNPs [rs6568920 (+8391G>A), rs3756772 (+56780A>G), rs3798234 (+75687C>T), rs9384970 (+68506G>A), rs1933739 (+72978G>A), and rs9400883 (+75809A>G)] in the FRK gene were determined by Affymetrix Targeted Genotyping Chip data. According to the classification of Korean Society for the Study of Obesity, control (BMI 18 to < 23) and overweight/obesity (BMI$\geq$23) subjects were recruited. For the analysis of genetic data, EM algorithm, SNPStats, Haploview, HapAnalyzer, SNPAnalyzer, and Helixtree programs were used. Multiple logistic regression analysis (codominant, dominant, and recessive models) was performed. Age and gender as covariates were adjusted. For biochemical data, Student's t test was used. The mean value of BMI in the control and overweigh/obesity groups was 21.1${\pm}$1.2 (mean${\pm}$SD) and 25.6${\pm}$2.0, respectively. All biochemical data of the overweight/obesity group were statistically significance, compared with the control group. Among six SNPs, two linkage disequilibrium (LD) blocks were discovered. One block consisted of rs1933739 and rs9400883, and the other comprised rs3756772 and rs3798234. One SNP (rs9384970, +68506G>A) showed an association with overweight/obesity in the codominant model (p=0.03). Interestingly, the AA genotype distribution in the overweight/obesity group (n=7, 3.5%) was higher than those in the control group (n=1, 0.6%), which is not found in either Japanese or Chinese subjects. Therefore, the AA genotype of rs9384970 may be a risk factor for development of obesity in Korean population. The results suggest that FRK may be associated with overweight/obesity in Korean population.

The Policy Effects on Traditional Retail Markets Supported by the Korean Government (정부의 전통시장 지원 정책 효과에 대한 실증연구)

  • Lee, Kyu-Hyun;Kim, Yong-Jae
    • Journal of Distribution Science
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    • v.13 no.11
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    • pp.101-109
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    • 2015
  • Purpose - A traditional retail market is a place that offers economic opportunity to employees and employers alike it also is a place where the community can meet. The Korean government has invested three trillion won to improve physical and non-physical aspects in traditional retail markets since 2004. However, little research on this has been conducted. We explore this research gap that could lead to theory extension. We analyze consumption behavior with respect to traditional retail markets through an empirical analysis, thus overcoming limits in previous research. We empirically analyze policy effects of traditional retail market projects supported by the Korean government. Research design, data, and methodology - We propose a traditional retail market improvement plan via the relation between cause and effect resulting from the analysis. More specifically, logit analysis was carried out with 1,754 consumers in 16 cities nationwide. In order to analyze consumer consumption behaviors nationwide, the probability was analyzed using a logit model. This research analyzes the link between support and non-support by the Korean government using binary values. The dependent variable is whether Korean government support is implemented; the binomial logistic regression is used as the statistical estimation technique. The object variables are:1 (support) or 0 (nonsupport), and the prediction value is between 1 and 0. As a result of the factor analysis of questions related to attributes of service quality, four factors were extracted: convenience, product, facilities, and service. Results - The results indicate that convenience, product, and facilities have a significant influence on consumer satisfaction in accordance with the government's traditional retail market support. Additionally, the results reveal that convenience, product, facilities, and service all have a significant influence on consumer satisfaction in a traditional retail market's service quality and consumer satisfaction. Finally, the analysis indicates that the highly satisfied traditional retail market customer has a significant influence on revisit intention. Moreover, the results reveal that the highly satisfied traditional retail market customer has a significant influence on recommendation intention. Conclusions - This research focused on consumers nationwide to measure policy effects of traditional retail markets compared to previous research that focused on one traditional retail market or a specific area. We verified the relationship of service quality and customer satisfaction and consumer behavior based on service quality theory. The results indicate that consumer satisfaction of traditional retail markets supported by service quality factors has a significant impact. In a concrete form, the results indicate that these effects are from facility modernization projects and marketing support projects of the Korean government. The results also imply that these facility and management support effects from the Korean government have been consistent. We realize that the Korean government has to selectively support traditional retail markets in major cities and small and medium-sized cities. To that end, the Korean government needs to select a concentration strategy for the revitalization of traditional retail markets.

Community-Residing Elderly's Attitude toward Own Aging and Effects of Personal Resources, Social Support, and Social Participation: Focused on Elderly in Daejeon Metropolitan City (지역사회 노인의 자신의 노화에 대한 태도와 개인자원, 사회적 지지, 사회참여가 미치는 영향: 대전광역시 거주 노인을 중심으로)

  • Choi, Hae-Kyung
    • The Journal of the Korea Contents Association
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    • v.18 no.3
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    • pp.509-519
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    • 2018
  • The purpose of this study was to examine the attitude toward own aging among community-residing elderly and the predictors of the attitude focusing on personal resources, social support, and social participation. Data were collected from 198 elders aged 60+ with the cooperation of several social service center for the aged, senior centers, and senior citizen associations in Daejeon Metropolitan City. SPSS 22.0 software was used for descriptive analysis, correlation analysis, and hierarchical regression analysis. The results showed that (1) the research participant elderly's attitude toward own aging indicated fairly negative perception of their own aging; (2) self-esteem and economic status were statistically significant factors indicating the higher levels of self-esteem and economic status predicting the positive attitude of their own aging; (3) emotional support from family was statistically significant factor that predicted the positive attitude of their own aging; (4) the level of social participation was also statistically significantly associated with the positive attitude; (5) In the full model of all independent variables, the significance of emotional support from family and social participation disappeared, but self-esteem and economic status among personal resources remained statistically significant influential factors. Based on the findings, suggestions for social welfare policy and practice to improve community-residing elderly's positive attitude toward their own aging were discussed.