• 제목/요약/키워드: bivariate correlation analysis

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Differences in Psychopathology and Effectiveness of Individual Counselling According to Learning Environment of Agricultural Specialized College Students (농업계 특수전문대학 학생들의 학습 환경에 따른 정신병리 차이와 개인상담의 효과검증)

  • Lee, D.K.;Nho, W.G.;Jeong, D.S.;An, J.S.
    • Journal of Practical Agriculture & Fisheries Research
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    • 제19권1호
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    • pp.153-163
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    • 2017
  • This study is aimed at researching on psychopathological characteristics of agriculture-specialized college students, in a specific educational environment, consulting some students who show maladjusted characteristics, verifying its effects and providing basic data for college life instructions. The complete survey MMPI was conducted for 676 freshmen and juniors attending K agriculture-specialized college located in Jeollabuk-do. To analyze the results, basic statistics, bivariate correlation analysis, and multiple regression analysis were implemented. The results of this study are as follows; First, the level of overall clinical scale was lower than 50 points, standard point, and freshmen showed higher depression (D), hysteria (Hy) and psychasthenia (Pt) in general. Such results are different from the other study results. It is considered an anxiety in early stage, resulted from a living in a dormitory. For the juniors who came back from one-year practice, anxiety about employment seems little because they are already employed. Second, The effects of personal consultation for maladjusted students were proved (p<.01). The students who got consultation showed improvement effect from 'very bad condition' to 'considerable depression', which is low score. This study has a meaning in preventing from any accident, by screening maladjusted students who are supposed to learn in a specific situation, by relieving their symptoms through consultation and letting them concentrate on learning.

Analysis of Rainfall Spatial Correlation Structure Using Minutely Data (분단위 자료를 이용한 강우의 공간상관구조 분석)

  • Yoo, Chul-Sang;Park, Chang-Yeol;Kim, Kyoung-Jun;Jun, Kyung-Soo
    • Journal of the Korean Society of Hazard Mitigation
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    • 제8권6호
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    • pp.113-120
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    • 2008
  • This study analyzed the spatial correlograms of minutely rainfall data with respect to various accumulation times. A bivariate mixed lognormal distribution was applied for rainfall modelling. A total of 26 minutely rainfall data sets from rain gauge stations in the central part of Korean peninsula were analyzed, also repeated for several storm types like Jang-Ma, typhoon and convective storms for their comparison. The accumulation times 1, 2, 3, 5, 10, 30 and 60 minutes were considered in this study. As results, it was found that the minutely rainfall data available was not good enough for estimating minutely rainfall intensity at ungaged locations. It seems more practical to use the hourly rainfall data with much higher rain gauge density, if proper methods for interpolation and data dis-aggregation are provided.

Genetic Parameters and Annual Trends for Birth and Weaning Weights of a Northeastern Thai Indigenous Cattle Line

  • Intaratham, W.;Koonawootrittriron, S.;Sopannarath, P.;Graser, H.-U.;Tumwasorn, S.
    • Asian-Australasian Journal of Animal Sciences
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    • 제21권4호
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    • pp.478-483
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    • 2008
  • Records of a Northeastern Thai indigenous cattle line population were used to estimate genetic parameters and annual trends for calf weights. The data set comprised records of 1,922 and 1,489 animals for birth and weaning weight, respectively born from 1993 to 2004. A bivariate analysis was carried out for variance and covariance components estimations using average information restricted maximum likelihood procedure. Average estimated breeding value and maternal breeding value of the animals born in 1993 were set to zero as a base group. Genetic trends of each trait were calculated by regressing average estimated breeding values and maternal breeding values on birth year of calves. Phenotypic trends for each trait were calculated by regressing the yearly adjusted weight on birth year of calves. The results revealed that the estimate of direct heritability, maternal heritability and maternal permanent environmental variance as a proportion of phenotypic variance for birth and weaning weight was 0.40, 0.14 and 0.04; 0.27, 0.05 and 0.23, respectively. Direct heritability was moderately heritable and genetic improvement through selection can be achieved. The estimate of phenotypic, direct genetic, maternal genetic and maternal permanent environmental correlation between birth and weaning weight was 0.48, 0.65, 0.98 and 0.73, respectively. The phenotypic trend, genetic trends of estimated breeding value and maternal breeding value for birth weight was 0.18, 0.04 and 0.01 kg/year, respectively. The phenotypic trend, genetic trends of estimated breeding value and maternal breeding value for weaning weight was -1.36, 0.32 and 0.03 kg/year, respectively. As maternal genetic effect was considerably less important than direct genetic effect, selection for improved weaning weight of this Northeastern Thai indigenous cattle line can place more emphasis on the direct genetic effect.

Diagnostic Values of the Measurement of Fungiform Papillae in Patients with Burning Mouth Syndrome (구강작열감증후군 환자에서 심상유두 수 측정의 진단적 가치)

  • Lee, Eom-jee;Park, Jae-woo;Kim, Jin-sung
    • The Journal of Internal Korean Medicine
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    • 제37권6호
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    • pp.978-989
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    • 2016
  • Objectives: This study evaluated the diagnostic values of measuring the number of fungiform papillae in patients with burning mouth syndrome (BMS). Methods: Seventy participants (35 BMS patients and 35 Healthy control) participated in this study. The number of fungiform papillae (FP) was measured on the anterior part of the tongue within an area of $9mm^2$ using a digital camera. The subjects were evaluated on their yin deficiency and blood stasis conditions using the Yin-Deficiency Questionnaire (YDQ) and Blood Stasis Questionnaire (BSQ). Moreover, the severities of subjective tongue pain in the BMS patients were assessed using Visual Analog Scale. Results: There were significant differences in the number of FP and the YDQ and BSQ scores between the two groups. The number of FP and the YDQ scores in the BMS group showed statistically significant correlations with the VAS score of tongue pain. In the bivariate logistic regression analysis, the factor that most strongly contributed to BMS was the number of FP. The optimal cut-off value of the number of fungiform papillae was calculated as 5.5 with 71.4% sensitivity and 82.9% specificity. There was no statistically significant correlation between the number of FP and the YDQ or BSQ score. Conclusions: According to these findings, measuring the number of FP could be a valuable evaluation indicator of BMS.

Predictors of Participation in Prostate Cancer Screening among Older Men in Jordan

  • Abuadas, Mohammad H;Petro-Nustas, Wasileh;Albikawi, Zainab F.
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권13호
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    • pp.5377-5383
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    • 2015
  • Background: Participation is one of the major factors affecting the long-term success of population-based prostate cancer screening programs. The aim of this study was to explore strong factors linked to participation in prostate cancer screening among older Jordanian adults using the Health Belief Model (HBM). Materials and Methods: Data were obtained from Jordanian older adults, aged 40 years and over, who visited a comprehensive health care center within the Ministry of Health. A pilot test was conducted to investigate the internal consistency of the the Champion Health Belief Model Scale for prostate cancer screening and the clarity of survey questions. Sample characteristics and rates of participation in prostate cancer screening were examined using means and frequencies. Important factors associated with participation in prostate cancer screening were examined using bivariate correlation and multivariate logistic regression analysis. Results: About 13% of the respondents had adhered to prostate cancer screening guidelines over the previous decade. Four out of the seven HBM-driven factors (perceived susceptibility, benefits and barriers to PSA test, and health motivation) were statistically significant. Those with greater levels of susceptibility, benefits of PSA test and health motivation and lower levels of barriers to PSA testing were more likely to participate in prostate cancer screening. Family history, presence of urinary symptoms, age, and knowledge about prostate cancer significantly predicted the participation in prostate cancer screening. Conclusions: Health professionals should focus more on the four modifiable HBMrelated factors to encourage older adults to participate in prostate cancer screening. Intervention programs, which lower perceived barriers to PSA testing and increase susceptibility, benefits of PSA testing and health motivation, should be developed and implemented.

The Effect Factors on the Growth of Phytoplankton and the Sources of Organic Matters in Downstream of South-Han River (남한강 하류수역에서 식물플랑크톤 증식의 영향인자 및 수중유기를 기원)

  • Park, Hae-Kyung;Byeon, Myeong-Seop;Choi, Myeong-Jae;Kim, Young-Jin
    • Journal of Korean Society on Water Environment
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    • 제24권5호
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    • pp.556-562
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    • 2008
  • We divided the downstream of South-Han River into three water zones, such as river zone, transition zone and lacustrine zone depending on the flow rate, and elucidated the major effect factors on the growth of phytoplankton and the sources of organic matters in each water zone. The difference of chlorophyll-a concentration which represents the standing crop of phytoplankton was statistically significant among the water zones. From the results of bivariate correlation analysis between chlorophyll-a concentration and water quality parameters in each water zone, the outflow of Chungju dam and hydraulic retention time of Lake Paldang which are directly related with the flow rate seemed to have obvious impact on phytoplankton growth in the downstream of South-Han River. The concentration of nutrients such as phosphorus and nitrogen exceeded the criterion of eutrophication and did not showed significant relationship with chlorophyll-a concentration. There were strong correlations between $BOD_5$ and chlorophyll-a concentrations in transition and lacustrine zone showing autochthonous production of phytoplankton was dominant source of organic matters in these zones especially in dry seasons. The results of this study show that the control of abundance of phytoplankton is the key target for reduction of the organic pollution in the downstream of South-Han River.

The Relationship between Obesity and Cardiac Autonomic Regulation in College-Aged Male Smokers (남자흡연대학생의 비만과 심장자율신경조절의 관련성)

  • Kim, Choun Sub;Kim, Maeng Kyu
    • Journal of the Korean Applied Science and Technology
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    • 제36권1호
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    • pp.142-152
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    • 2019
  • This study aimed to explore the association between obesity index and heart rate variability (HRV) in college-aged male smokers. A total of 85 male college students (> 10 cigarettes per day for at least 3 years) were participated in this study. According to a standardized protocol, body mass index (BMI), percent body fat (%BF), waist circumference (WC), and waist-to-hip ratio (WHR) were taken as obesity indices. Resting r-r interval was monitored for HRV analysis as an indicator of cardiac autonomic regulation. Compared with low WHR subjects, high WHR subjects had significantly lower values of rMSSD, pNN50, HF, and SD1, suggesting decreased parasympathetic activity. No such differences in LF/HF ratio were found between the WHR-based subgroups. Bivariate correlation analysis showed that obesity indices of WC, WHR, and %BF were significantly associated with rMSSD, pNN50, HF, and SD1, with a tendency for correlation coefficient to be higher with WHR than with WC or %BF. No significant association was found between BMI and HRV parameters indicative of parasympathetic activity. This study suggest that central obesity is significantly associated with decrease in parasympathetic activation, independent of BMI as an indicator of obesity, in male college smokers.

Psychological Characteristics and Life Satisfaction of the Elderly -Focusing on Gwangju Metropolitan City- (노인의 심리적 특성과 삶의 만족도 분석 -광주광역시를 중심으로-)

  • Chon, Lee-sang;Cho, Hong-joong
    • Journal of the Korea Convergence Society
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    • 제12권6호
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    • pp.225-232
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    • 2021
  • The purpose of this study is to identify the psychological characteristics of the elderly and to investigate the variables that affect the life satisfaction of the elderly. To achieve this purpose, psychological characteristics such as self-esteem, alienation, loss, and depression were selected. A survey was conducted on the elderly living in Gwangju Metropolitan City. A total of 218 copies were collected and 203 copies were analyzed, excluding poor responses. To draw the results of the research, quantitative analysis was conducted through questionnaires, and SPSSWIN 21.0 statistical program was used as an analysis tool. The analysis methods were frequency and ratio analysis, technical statistical analysis, bivariate correlation analysis, and linear regression analysis. The results of the analysis are as follows: First, the relationship between the psychological characteristics of the elderly showed significant correlations among the self-esteem, alienation, loss, depression, and life satisfaction of the elderly. Second, for the elderly, alienation and depression had a negative effect on life satisfaction, and self-esteem had a positive effect on life satisfaction. However, loss did not have a significant effect on life satisfaction. In conclusion, it suggests that it is necessary to develop and operate policies and programs to improve self-esteem and reduce alienation and depression in order to improve the quality of life of the elderly.

The Effects of Visitor's Service Quality Affecting Visitor's Satisfaction in National Parks (국립공원(國立公園)의 탐방(探訪)서비스 질(質)이 탐방만족도(探訪滿足度)에 미치는 영향(影響))

  • Lee, Ju-Hee;Bae, Min-Ki
    • Journal of Korean Society of Forest Science
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    • 제95권1호
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    • pp.113-123
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    • 2006
  • The purpose of this paper was to identify the effects of visitor's service quality affecting visitor's satisfaction in national parks(NPs). After reviewing the literature, this research selected and developed the indicators of visitor's service (VS) and have formulated the hypothesis of this research. This research had obtained data through a questionnaire, which surveyed 4,423 visitors at 8 NPs in 2005. We have analyzed the data using descriptive statistical methods, factor analysis, Pearson's correlation analysis, and multiple linear regression method. We found that 1) the results of factor analysis, the five factors of visitor's service (FVSs) i.e., assurance, reliability, empathy, tangibles, responsiveness have extracted. 2) in bivariate analysis, the positive relationships between user's satisfaction and FVSs are fairly low but statistically significant. The higher the value of the five factors of VS the higher the degree of user's satisfaction, 3) in multiple regression analysis, FVSs have been statistically significant at one percent level, and 4) the relative contribution of the assurance of VS on user's satisfaction have been determined to have respectively 2.85 times more important than that of the empathy of VS. The research results suggest that the management of natural resources, cultural resources, and park facilities in national park was the most important factor to increase visitor's satisfaction.

Gender Difference of Community-Residing Elderly's Satisfaction with Life and Influential Factors (지역사회 노인의 삶의 만족도와 영향 요인의 성별 차이)

  • Choi, Hae-Kyung;Kim, Jeong-Eun
    • The Journal of the Korea Contents Association
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    • 제18권6호
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    • pp.467-480
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    • 2018
  • The purpose of this study was to investigate gender difference of community-residing elderly's life satisfaction and influential factors. Data were collected from 461 elders aged 60+ with the cooperation of several social service center for the aged, senior centers, and senior citizen associations in Daejeon Metropolitan City and Chungcheongnam-do(Cheonan-si and Okcheon-gun). SPSS 22.0 software was used for t-test and cross tabulation analysis, correlation analysis, and hierarchical regression analysis. The results showed there was statistically significant difference of elderly's life satisfaction by gender in multivariate analysis including sociodemographic factors, social network and relationship with children variables, but no difference in bivariate analysis. There was also significant difference in the factors affecting community-residing elderly's life satisfaction by gender. A few factors like friend support, number of regular social gatherings, and subjective health status were statistically significant in predicting male elderly's life satisfaction. Predictors of female elderly's life satisfaction which were perceived elderly parent-children conflict, friend support, monthly income, subjective health status, support to children, support from children were more diverse, compared to the predictors for male elderly's life satisfaction. Based on the findings, suggestions for social welfare policy and practice to improve community-residing elderly's life satisfaction considering the gender difference were discussed.