• 한국지구과학회지
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• 제33권5호
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• pp.422-433
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• 2012

The purpose of this study is to investigate the characteristic changes of the Changma season in the 2000s. To accomplish this goal, we have used daily rainfall data collected over nearly 40 years (1971 to 2010). The average summer precipitation data including the Changma season were collected from 16 weather stations that are placed across the three major regions (i.e. central region, southern region, and Jeju region) as Korea Meteorological Administration divided. These precipitation data were analyzed to find out characteristic changes of the Changma season. Results of the precipitation data comparison among the major regions that, monthly average precipitation in the central region was the highest in July; its precipitation tended to increase from May to September. In the southern region, the precipitation amount was lowest in June and tended to increase in May, September, and August. In the Jeju region, the precipitation has been the highest in June and July for the past 30 years, whereas September has been highest month in the last 10 years. The precipitation amount in the Jeju region decreased both in June and July, whereas it tended to grow in May, August and September. A correlation coefficient formula by Karl Pearson has been used to find out correlations between the Changma season and the precipitation of the major regions in 2000s and normal years. It was found that the correlation coefficient has decreased from 0.723 to 0.524 in the 2000s (2001 to 2010) compared to normal years (1971 to 2000).

• 디지털융복합연구
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• 제16권3호
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• pp.363-373
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• 2018

본 연구는 조혈모세포이식병동 간호사의 자율성과 직무만족도를 파악하고, 자율성과 직무만족도와의 상관관계를 규명하기 위한 조사연구이다. 국내 7개의 대학병원에 근무하는 간호사 79명을 대상으로 2013년 5월 20일부터 6월 4일까지 설문조사를 실시하였다. 분석방법은 SPSS 14.0을 이용하여 t-test, ANOVA, Pearson correlation coefficient를 실시하였다. 자율성 평균은 $165.47{\pm}19.56$점, 직무만족도 평균은 $3.15{\pm}0.35$점으로 나타났다. 자율성과 직무만족도는 상관관계를 보이지 않았으나, 직무만족도의 하부영역 중 자율성영역(r=.273)과 상호작용영역(r=.257)은 자율성과 유의한 정적 상관관계를 보였다. 이에 조혈모세포이식병동 간호사의 직무만족도 향상을 위해서 직무만족도의 하부영역인 자율성을 높일 필요가 있을 것이다. 따라서 본 연구결과는 조혈모세포이식병동 간호사들의 자율성과 직무만족도를 증가시킬 수 있는 교육과 정책프로그램을 개발에 유용한 기초자료로 이용될 수 있다.

• 한국콘텐츠학회논문지
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• 제21권7호
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• pp.609-618
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• 2021

본 연구의 목적은 자녀를 두고 있는 어머니의 분노와 우울이 유아문제행동에 미치는 영향을 확인하는데 있다. 자료수집은 2019년 5월 1일부터 7월 1일까지이며, 대전, 부산, 울산에 소재한 3곳의 유아교육기관에 영유아 자녀를 위탁한 어머니 244명이었다. 수집된 자료는 SPSS/WIN 24.0을 사용하여 기술통계, t-test, ANOVA, Pearson correlation coefficient, multiple liner regression analysis를 이용하였다. 본 연구 결과 유아문제행동은 어머니의 분노(r=.261, p<.001), 우울(r=.435, p<.001)과 통계적으로 유의한 정적 상관관계가 있는 것으로 나타났다. 다중회귀분석결과 유아문제행동에 유의하게 영향을 미치는 요인은 어머니의 우울(𝛽=16.57, p<.001)로 총 설명력은 19.2%이었다. 따라서 어머니의 정서적 지지와 함께 우울영향 요인 감소를 지원하는 부모교육프로그램 개발 필요성에 대한 시사점을 제공하였다.

• International Journal of Internet, Broadcasting and Communication
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• 제10권3호
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• pp.65-72
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• 2018

The purpose of this study was to assess the intra-tester and inter-tester reliability and validity of elbow flexion range of motion using a smart phone used by the general public. Thirty-one general people participated in this study. The range of motion in active elbow flexion was measured with a goniometer and smart phone over two times by two observers. The intra-taster and inter-tester reliability were evaluated using the intraclass correlation coefficient(ICC). The validity was measured by Pearson's correlation coefficient. The intra-observer reliability was good in all measured items ICC>0.900. The inter-observer reliability was high with ICC>0.806. All correlation coefficients of android app and goniometer were greater than 0.868 and showed a significant positive correlation (p<0.01). The range of motion measurement with a smart phone showed acceptable reliability. Therefore, using a smartphone to measure the range of motion of the elbow joint could provide convenience and economic benefits.

• 융합정보논문지
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• 제10권5호
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• pp.83-91
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• 2020

본 연구는 간호대학생의 식행동 정도를 살펴보고, 식행동에 영향을 미치는 요인을 분석하기 위해 실시된 조사연구이다. 수집된 304명의 자료를 SPSS 18로 기술통계, t-test, ANOVA, pearson's correlation coefficient와 stepwise multiple regression을 실시하였다. 본 연구대상자의 식행동의 평균 평점은 2.72점이었다. 식행동과 건강관심도 및 식생활 태도와는 유의한 정적인 상관관계를 보여주었고, 영양지식과는 유의한 상관관계가 없었다. 간호대학생의 식행동에 영향을 미치는 요인으로는 건강관심도, 지각된 건강상태, 운동, 식생활 태도와 거주형태로 나타났으며, 이는 간호대학생의 식행동에 대해 24.4%의 설명력을 보였다. 그 중에서 건강관심도가 가장 중요한 영향요인이었다. 향후 간호대학생의 바람직한 식행동을 형성하기 위해서는 식행동에 영향을 미치는 요인을 가진 학생들을 중심으로 건강관심도를 강화한 실질적인 중재 방안의 개발 및 적용이 필요할 것이다.

• 대한한방소아과학회지
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• 제17권2호
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• pp.161-171
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• 2003

This study was to investigate the relationship of headache and back shape using the Moire interferometer and Questionnaire investigations. In this study the subjects consisted of 317 pupils[168 boys(53%), 149girls(47%)] attending S high school in Sungnamsi, Kyoungkido in 2002, and their ages ranged from sixteen to eighteen. The results are following. 1. In questionnaire investigation, we observed that the ratio of headache was more than 70% and the ratio of girls are more than that of boys. The inclination for ages was not shown. 2. In moire topography, the remainder values of scapular region were from 0.5 cm to 1.1 cm in boys, and from 0.45 cm to 1 cm in girls. The remainder values of gluteal region were from 0.2 cm to 0.8 cm in boys, and from 0.4 cm to 0.6 cm in girls. The reminder values of the vertical lines of cervical and buttock region were from 0.71 cm to 1.51 cm in boys, and from 0.96 cm to 1.43 cm in girls. More frequent findings of reminder value of the vertical lines of cervical and buttock region were observed that the vertical lines of cervical region were inclined to left than the vertical lines of buttock 3. Through the Pearson's Correlation analysis of headache and Moire topography, we found the close relationship of headache and the remainder values of scapular region(Pearson correlation coefficient : 0.116, P<0.05) and gluteal region(Pearson correlation coefficient : 0.153, P<0.01). But the relevances to headache and the remainder values of neck lines, sacral lines and neck-sacral lines were not found.

• 한국환경보건학회지
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• 제47권1호
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• pp.64-77
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• 2021

Objective: Biological monitoring of trace elements in human blood samples has become an important indicator of the health environment. The purpose of this study was to detect and evaluate multiple metal items in blood samples based on ICP-MS, to perform comparative evaluation with the existing analysis method, and to develop and verify a new method. Methods: 100 μL of whole blood from 80 healthy subjects was used to analyze ten metals (Sb, tAs, Cd, Pb, Mn, Hg, Mo, Ni, Se, Tl) using ICP-MS. Verification of the analysis method included calculation of linearity, accuracy, precision and detection limits. In addition, a comparative test with the conventional graphite furnace atomic absorption spectroscopy (GF-AAS) method was performed. In the case of Pb, Cd, and Hg in whole blood, cross-analysis between Pb, Cd, and Hg analysis methods was performed to confirm the difference between the existing method and the new method (ICP-MS). Results: The coefficient of determination (R2) was 0.999 or higher in seven items and 0.995 or higher in three items. The Pb result showed that Pearson's correlation coefficient was very high at 0.983, and the intraclass correlation coefficient was 0.966. The Cd result showed that Pearson's correlation coefficient was 0.917 between the existing method and the new analysis concentration value. Its intraclass correlation coefficient was 0.960, and there was no significant difference between the two groups. Hg had a low correlation at 0.687, and the intraclass correlation coefficient was 0.761, which was lower than that of Pb and Cd. The intra-day and inter-day accuracy of Pd and Cd were satisfactory, but Hg did not meet the criteria for both accuracy and precision when compared with the conventional analysis method. Conclusion: This study can be meaningful in that it proposes a more efficient and feasible analysis method by verifying a blood heavy metal concentration experiment using multiple simultaneous analyses. All samples were processed and analyzed using the new ICP-MS. It was confirmed that the agreement between the two methods was very high, with the agreement between the current and new methods being 0.769 to 0.998. This study proposes an efficient simultaneous methodology capable of analyzing multiple elements with small samples. In the future, studies of various applications and the reliability of ICP-MS analysis methods are required, and research on the verification of accurate, precise, and continuous analysis methods is required.

• 음성과학
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• 제10권2호
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• pp.249-258
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• 2003

This study attempted to examine a speaker identification method using difference sum and correlation coefficient determined from a pair of intensity level matrices of band-pass-filtered numeric sounds produced by ten female speakers of similar age and height. Subjects recorded three digit numbers at a quiet room at a sampling rate of 22 kHz on a personal computer. Collected data were band-pass-filtered at five different band ranges. Then, matrices of five intensity levels at 100 proportional time points were obtained. Pearson correlation coefficients and the sum of absolute intensity differences between a pair of given matrices were determined within and across the speakers. Results showed that very high correlation coefficient and small difference sum generally occurred within each speaker but some individual variation was also observed. Thus, the matrix pair with a higher coefficient and a smaller difference sum was averaged to form each individual's model. Comparison among the speakers yielded generally low coefficients and large differences, which suggests successful speaker identification, but among them there were a few cases with very high coefficients and small differences. Future studies will focus on finer band ranges and additional spectral parameters at some peak points of the intensity contour at a low frequency band.

• Physical Therapy Rehabilitation Science
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• 제7권2호
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• pp.61-66
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• 2018

Objective: Patellofemoral pain syndrome (PFPS) is a condition that is characterized by patellar discomfort or pain that is aggravated during certain activities such as ascending/descending stairs. The Patellofemoral Disability Index (PDI) was developed to assess the effect of pain on functional activities in individuals with PFPS. The objectives of the current study were to determine the internal consistency, test-retest reliability, and validity of this index. Design: Cross-sectional study. Methods: Forty-one subjects who had PFPS with a mean age of $28.8{\pm}5.0years$ and a mean body mass index of $25.6{\pm}4.7kg/m^2$ participated in the study. All subjects were concurrently enrolled in a clinical trial for which they were instructed to complete hamstring-resistance exercises for 4 weeks. Over the course of the intervention, they completed both the PDI and the Oswestry Disability Index (ODI) at baseline after two weeks, and after four weeks. Pearson correlation coefficient was used to assess the criterion validity. Cronbach's ${\alpha}$ was used to examine the internal consistency. Intraclass correlation coefficients with 95% confidence interval were computed to examine test-retest reliability. Results: Subjects' responses within both the PDI and the ODI yielded Pearson correlation coefficient values that were positive and highly significant (range, 0.73-0.97; p<0.001). There was a high level of internal consistency (Cronbach's ${\alpha}{\geq}0.8$), with the exception of stair climbing (Cronbach's ${\alpha}=0.65$). Intraclass correlation ranged from 0.87 to 0.92, indicating high levels of test-retest reliability. Conclusions: The PDI is a valid, reliable, and feasible method of assessing pain and functional ability in patients with PFPS.

• 한국산학기술학회논문지
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• 제15권7호
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• pp.4157-4164
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• 2014

목적 이 연구는 한국군 병사의 자살사고 예방을 위해 영적안녕, 자기통제, 조직몰입의 상관관계를 밝히는 것이다. 방법 599여명의 한국군 병사를 대상으로 2013년 12월 1일부터 31일까지 조사한 설문지를 통해 영적안녕, 자기통제, 조직몰입의 상관성을 조사한 양적인 설문조사연구이다. 자료는 SPSS 18.0 프로그램을 이용한 t-test, ANOVA, Pearson's correlation coefficient로 처리하였다. 결과 영적안녕, 자기통제, 조직몰입 간에는 정적 상관관계가 있다. 결론 영적안녕과 자기통제는 대상자들의 조직몰입과 정적 상관관계를 갖는다. 조직몰입을 높이기 위해서는, 건강문제로서 영적안녕에 대한 필요성이 중요함을 인식할 필요가 있다. 또한 영적안녕, 자기통제에 대한 교육 프로그램의 도입 및 자체 개발 및 적용이 필요하다. 이는 병사의 삶을 더욱 건강히 하고, 사회적으로 큰 이득이 될 것이다.