• Smart Media Journal
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• v.7 no.3
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• pp.22-28
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• 2018

Air pollution problems in Korea are gradually becoming a higher concern due to various reasons such as fine dust, causing anxiety among people with regard to their health. Although various studies have been carried out on the relationship between the influence of fine dust and a certain disease, they are mostly focusing on the analyzation that fine dust is related to specific illnesses such as respiratory and cardiovascular diseases, hypertension and diabetes. In this paper, we utilize the public data of medical history information to extract ten medical care subjects with the highest number of monthly care in 2016, and analyze the relation of fine dust with certain medical subjects using Pearson correlation coefficient. We also subdivide and analyze the correlation between fine dust and the medical subjects according to their gender and age. Middle-aged Female group with the strongest positive correlation between fine dust and the medical subjects is analyzed with the correlation from 2011 to 2015, with its relevance coefficient extracted by regression analysis in order to predict the correlation with the medical subjects according to the fine dust concentration.

• Journal of Korea Water Resources Association
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• v.49 no.3
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• pp.207-215
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• 2016

In this study, it is analyzed how large scale climate variation has an effect on climate systems over Korea using correlation analysis between climate indices and Intrinsic Mode Functions (IMFs) of precipitation and temperature. For this purpose, the estimated IMFs of precipitation and temperature from the accompanying paper were used. Furthermore, cross correlation coefficients and lag time between climate indices and IMFs were calculated considering periodicities and tendencies. As results, more accurate correlation coefficients were obtained compared with those between climate indices and raw precipitation and temperature data. We found that the Korean climate is closely related with climate variations of $El-Ni{\tilde{n}}o$ in terms of periodicity and its tendency is followed with increasing sea surface temperature due to climate change.

• School Mathematics
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• v.19 no.3
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• pp.461-480
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• 2017

The aim of this study was to analyze characteristics of teachers' knowledge about correlation with data presented in $2{\times}2$ tables. In order to achieve the aim, this study conducted didactical analysis about two-way tables through examining previous researches and developed a questionnaire with reference to the results of the analysis. The questionnaire was given to 53 middle and high school teachers and qualitative methods were used to analyze the data obtained from the written responses by the participants. This study also elaborated the framework descriptors for interpreting the teachers' responses in the light of the didactical analysis and the data was elucidated in terms of this framework. The specific features of teachers' knowledge about correlation with data presented in $2{\times}2$ tables were categorized into three types as a result. This study raised several implications for teachers' professional development for effective mathematics instruction about correlation and related concepts dealt with in probability and statistics.

• Water for future
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• v.26 no.4
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• pp.85-95
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• 1993

Three purposes of this study are as follows: The first was the development of the extention method for the limited data observed in an urban drainage basin. The second was the analysis of the correlation between storm water runoff and NPS(non-point source) pollutant discharge, The last was the calculation of the monthly and annual specific NPS loads using the established correlation. the selected model was the SWMM monthly and annual specific NPs loads using the established correlation. The selected model was the SWMM (Storm Water Management model) developed by the US EPA(environmental Protection Agency). As a result of this study, the best correlation between storm wate runoff and NPS pollutants discharge was produced by the non-linear correlation between runoff rate(mm/hr)and specific loads rate(g/ha/sec)for all pollutants studied ; SS, COD, BOD, and TN. The best correlation through the analysis based on evently total mass was made by the linear correlation between the specific accumulated runoff(mm) and the specific accumulated loads(kg/ha) for CASE 1., and by the non-linear correlation for CASE 2. The NPS annual specific loads for the urban basin studied were 4933 kg/ha/year for SS, 775kg/ha/year for BOD, 3094kg/ha /year for COD,257kg/ha/year for TN, respectively. And the proportion of the NPS annual specific loads to the total annual specific loads were 42 % for SS, 13 % for BOD, 29% for COD, and 21 % for TN.

• Journal of Korean Library and Information Science Society
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• v.32 no.2
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• pp.145-164
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• 2001

This study attempts to identify use of information technology In university libraries and to analyze the relationship between utilization of information technology and organizational culture of university libraries. A questionnaire developed through literature review is used to survey staff in university libraries. In conclusion, utilization of information technology by librarian and rational goal model of culture have negative relation and two variables are correlated at .05 significant level.

• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.349-350
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• 2016

본 연구의 목적은 대학생의 부모애착, 대인관계, 정신건강과 스마트폰 중독 간의 관계를 알아보고, 스마트폰 중독에 미치는 영향 요인을 파악하고자 하였다. H대학의 학생 293명을 대상으로 2016년 2월 4일부터 일주일간 편의추출하였다. 주요 변수들과의 상관관계에서는 부모애착와 대인관계, 정신건강과 스마트폰 중독과는 양의 상관관계를 가지는 반면, 부모애착과 정신건강, 부모애착과 스마트폰 중독은 음의 상관관계를 가진다. 스마트폰 중독에 영향을 미치는 스마트폰 사용시간, 정신건강, SNS 사용시간, 부모애착 순으로 나타났으며, 이들 변수의 설명력은 13.0%이었다.

• Journal of Nutrition and Health
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• v.50 no.4
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• pp.350-360
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• 2017

Purpose: This study examined and compared the associations of the iron status and food intake with the blood lead, mercury, and cadmium concentrations among Korean adolescent girls, premenopausal women, and postmenopausal women. Methods: The data from the 2010~2011 Korea National Health and Nutrition Examination Survey (KNHANES) was used. The subjects were classified into three groups: adolescent girls (n = 268), premenopausal women (n = 1,157), and postmenopausal women (n = 446). The iron status was assessed by hemoglobin, hematocrit, serum ferritin, and iron concentrations, as well as the total iron binding capacity (TIBC). The food intake was estimated by a food frequency questionnaire. Results: The blood heavy metal concentrations and poisoning rate in postmenopausal women were higher than in the other groups. The iron status in the adolescent girls and postmenopausal women was higher than that in the premenopausal women. In the adolescent girls, the iron status was inversely associated with the blood cadmium concentration. The dairy food intake was inversely related to the blood lead and cadmium concentrations. In premenopausal women, the iron status was inversely associated with the cadmium concentrations. The fish and shellfish food intakes were positively associated with the mercury concentrations. In postmenopausal women, the iron status was positively associated with the mercury and cadmium concentrations. Fast foods and fried foods were inversely associated with the lead concentration. Conclusion: The premenopausal women showed a lower iron status than the adolescent girls and postmenopausal women. The associations of the iron status with the blood heavy metal concentrations were different among the adolescent girls, premenopausal women, and postmenopausal women. In addition, the relationships of the food intakes with the blood heavy metal concentrations differed among adolescent girls, premenopausal women, and postmenopausal women. Further studies will be needed to confirm these findings.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.6
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• pp.2869-2879
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• 2013

The purpose of this study was to investigate burnout, interpersonal relations, professional self-concept and depression in clinical nurses and to examine the relationship between these variables and depression. Data were collected through self reported structured questionnaire form 150 nurses in 8 nursing units of A general hospital by convenient sampling methods form December 10, 2012 to January 30, 2013. Burnout was negatively related to interpersonal relations and professional self-concept and was positively related to depression. Interpersonal relations were positively related professional self-concept and were negatively related to depression. Professional self-concept was negatively related to depression. Among these main variables and variables which showed significant differences in depression (age, marital status, career length, working part), only burnout accounted for 43% of the nurse's depression. Therefore, for controlling depression and improving mental health, it is necessary to develop nursing intervention to reduce burnout at the working environment.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.08a
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• pp.109-112
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• 2008

최근에 대학교에서는 e-learning 수업이 활성화되고 있다. e-learning에서는 각 단원의 마지막에 단원평가를 실시하여 학생들의 수업에 대한 성취도를 평가하고 있다. 그러나 대부분의 e-learning 수업에서는 단원평가 점수를 최종 성적에 반영하고 있지 않고 있다. 이유는 단원평가 성적과 시험 성적과의 상관관계에 대한 정확한 데이터도 없고, 시스템성의 원인 때문으로 이해된다. 본 연구에서는 2학기에 걸쳐 e-learning으로 수업이 진행된 과목을 대상으로 단원평가 점수와 학업 성취도 사이의 관계를 분석하였다. 분석 결과는 상관관계는 유의미한 것으로 나타났다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.22 no.1
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• pp.7-10
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• 1977

Positive correlations were observed between protein content and $\textrm{K}_2\textrm{O}$, protein and ash, protein and moisture content, and $\textrm{P}_2\textrm{O}_5$ and ash in soybean seeds. On the contrary, negative correlations were observed between fat and CaO, fat and ash, $\textrm{K}_2\textrm{O}$ and moisture content, CaO and moisture content, and MgO and ash content in soybean seeds.