• 디지털융복합연구
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• 제15권12호
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• pp.615-623
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• 2017

본 연구는 중년 남성 근로자의 수면의 질에 미치는 영향 요인을 파악하기 위한 목적으로 시도된 서술적 조사연구이다. 본 연구의 대상자는 전남지역 사업장의 중년 남성 근로자 127명이며, 자료 조사는 구조화된 설문지를 이용한 자가 보고식으로 이루어졌다. 자료 분석은 t-test, one-way ANOVA, Pearson correlation coefficient 와 step wise multiple regression 으로 SPSS/WIN 18.0을 사용하여 분석하였다. 연구결과, 수면의 질과 관련 변인들 간의 관계를 살펴보면 직무 스트레스는 양의 상관관계를 보였고, 직무만족도는 음의 상관관계를 보였다. 직무스트레스 중 하위영역 직무요구, 직장문화와 직무만족 중 하위영역 직무자체가 수면의 질을 24.5% 설명하였다. 이에 중년 남성 근로자들의 수면의 질을 향상하기 위한 간호중재 전략과 직업만족도를 높이고 직업스트레스를 줄이는 전략을 강구해야 할 것이다. 더불어 대상자의 수면의 질 향상을 위해 과도한 업무량을 줄일 수 있는 제도적 방안 마련과 건전한 직장문화를 확립할 수 있도록 구성원 간의 노력이 필요할 것으로 생각된다.

• Journal of Periodontal and Implant Science
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• 제42권6호
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• pp.212-216
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• 2012

Purpose: The aim of this study was to evaluate the relationship between maternal periodontal disease and the health status of newborns using Apgar scores. Methods: One hundred pregnant women with periodontal disease were included in the case series and 100 pregnant women without periodontal disease were placed in the control group, respectively. The periodontal parameters of bleeding on probing (BOP), clinical attachment loss (CAL), probing depth (PD), birth weight, and Apgar scores were recorded in both groups. T-tests and Pearson's correlation coefficient were used to determine the birth weight odds ratio to analyze the relationship between the periodontal parameters of BOP, CAL, and PD on the one hand and an Apgar score of less than 7. An unpaired Student's t-test was used to analyze differences in means between the case and control groups using SPSS ver. 13. Results: The means of the ages, periodontal pocket depths, attachment loss, areas with BOP, Apgar score in the first 5 minutes and infant birth weight exhibited statistically significant differences between the case and control groups. The ratio of an Apgar score of <7 to periodontal disease was 3.14; the ratio of low birth weight risk in mothers with periodontal disease to that in mothers without periodontal disease was 2.74. Pearson's correlation coefficient revealed a significant correlation between the infant birth weight and BOP, CAL, and PD of the mother. In addition, there was a significant correlation between the Apgar score and BOP, CAL, and PD and also between the Apgar score and infant birth weight. Conclusions: The results of this study showed a significant relationship between periodontal disease and infant birth weight; in addition, there was a significant relationship between the periodontal indexes of BOP, CAL, and PD on the one hand and the Apgar score on the other.

• Smart Structures and Systems
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• 제20권6호
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• pp.769-780
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• 2017

Cable force monitoring is an essential and critical part of the safety evaluation of cable-supported bridges. A reasonable cable force monitoring scheme, particularly, sensor placement related to accurate safety assessment and budget cost-saving becomes a major concern of bridge administrative authorities. This paper presents optimal sensor placement for cable force monitoring by selecting representative sensor positions, which consider the spatial correlativeness existing in the cable group. The limited sensors would be utilized for maximizing useful information from the monitored bridges. The maximum information coefficient (MIC), mutual information (MI) based kernel density estimation, as well as Pearson coefficients, were all employed to detect potential spatial correlation in the cable group. Compared with the Pearson coefficient and MIC, the mutual information is more suitable for identifying the association existing in cable group and thus, is selected to describe the spatial relevance in this study. Then, the bond energy algorithm, which collects clusters based on the relationship of surrounding elements, is used for the optimal placement of cable sensors. Several optimal placement strategies are discussed with different correlation thresholds for the cable group of Nanjing No.3 Yangtze River Bridge, verifying the effectiveness of the proposed method.

• 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.

• 디지털융복합연구
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• 제20권4호
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• pp.483-490
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• 2022

본 연구는 간호대학생의 자아탄력성, 진로의식성숙 및 취업스트레스 간의 관계를 파악하고자 하였다. 자료수집 기간은 2021년 10월 22일부터 11월 21일까지이며, 구조화된 설문지를 이용하여 187명의 간호대학생을 대상으로 일반적 특성, 자아탄력성, 진로의식성숙 및 취업스트레스를 파악하였다. 자료분석은 IBM SPSS 21.0 프로그램을 이용하여 기술통계, t-test, ANOVA, Pearson's correlation coefficient, Multiple regression으로 분석하였다. 본 연구결과 자아탄력성은 진로의식성숙과 양의 상관관계가 있었고, 진로의식성숙은 취업스트레스와 음의 상관관계가 있었다. 취업스트레스에 영향을 미치는 변수는 진로의식성숙이었고, 취업스트레스를 43% 설명하는 것으로 나타났다. 따라서 본 연구를 통해 간호대학생이 취업스트레스를 줄이고 직업에 대한 긍정적인 진로계획을 세울 수 있도록 간호대학생의 취업역량강화 프로그램 개발과 적용이 필요하다.

• 산업융합연구
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• 제21권12호
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• pp.123-129
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• 2023

본 연구는 간호대학생의 인권의식, 공감능력 및 다문화수용성의 정도를 파악하고 상관관계를 파악하기 위해 시도되었다. 자료는 본 연구의 자료수집은 2022년 10월 11일부터 2022년 11월 5일까지 G시 소재 일 대학의 간호대학생 175명을 대상으로 수집되었다. 수집된 자료는 SPSS/WIN 22.0 Program을 이용하여 t-test, pearson's correlation coefficient으로 분석하였다. 본 연구 결과는 다음과 같다. 간호대학생의 인권의식은 간호윤리교육 유무, 외국인이나 이주민 친구 유무에 따라 유의한 차이를 보였다. 본 연구의 결과, 인권인식은 공감능력과 유의한 상관관계가 있었으나, 인권인식과 다문화수용성, 공감능력과 다문화수용성은 유의한 상관관계가 나타나지 않았다. 본 연구 결과는 간호대학생의 전문직으로서 역량 강화에 기여하기 위한 간호교육에 기여하게 될 것이다.

• Journal of Trauma and Injury
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• 제22권2호
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• pp.148-153
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• 2009

Purpose: The osmolar gap increases in proportion to the ethanol level. Some previous studies have shown that the correlation between the osmolar gap and the ethanol level is weak in trauma patient by using an indirect comparison with other patients. We conducted a direct comparison of the correlation of the osmolar gap to the ethanol level between trauma patients and non-trauma patients. We also analyzed the accuracy of the estimated ethanol level between the two groups. Methods: The research candidates were adult patients who had visited the emergency department of our hospital from December 2003 to November 2008. By using a retrospective chart review, we classified them into three subgroups: non-trauma without shock, trauma without shock, and trauma with shock. In each group, we compared the correlation between the osmolar gap and the measured ethanol level, and we analyzed the accuracy of the estimated ethanol level by using Lin's concordance correlation coefficient. Results: Four hundred forty-seven patients were enrolled in this study. For correlation of the osmolar gap and the measured ethanol level, Pearson's correlation coefficient was 0.916 in all patients, 0.939 in non-trauma without shock patients, 0.917 in trauma without shock patients, and 0.844 in trauma with shock patients. In the analysis of the accuracy of the estimated ethanol level by using Lin's concordance correlation coefficient, the accuracy in trauma with shock patients was lower than that in non-trauma without shock patients. Conclusion: We found that the correlation between the osmolar gap and the measured ethanol level in the patient group with trauma was lower than it was in the patient group without trauma. Moreover trauma patients with shock had a lower accuracy of the estimated ethanol level than non-trauma patients.

• 한국지리정보학회지
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• 제22권4호
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• pp.197-214
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• 2019

본 연구에서는 Terra/Aqua MODIS LST(Moderate Resolution Imaging Spectroradiometer Land Surface Temperature)의 Daytime, Nighttime 자료와 기상청 기상관측소 86개 지점에 대한 최고, 최저 및 평균기온을 이용하여 두 자료 사이의 상관성을 분석하고, 한파 및 폭염 발생 기간의 특성을 집중적으로 분석하였다. 모든 자료는 2008년부터 2018년까지 총 11년간 일별로 구축하였으며, Pearson 상관계수(Pearson correlation coefficient, R)와 평균제곱근오차(Root Mean Square Error, RMSE)를 이용하여 상관성 분석을 수행하였다. 시계열 분석 결과, 대상 기간 전체에서 기온과 MODIS LST 간의 변동 양상은 유사하였고, 최고 기온과 MODIS 자료의 R 0.9 이상, 평균기온과 최저 기온과는 0.8 이상으로 기온과 MODIS LST 사이의 상관성은 높은 것으로 나타났다. 특히, 최고 기온은 Terra MODIS LST Daytime과 정확도가 제일 높고, 최저 기온은 Terra MODIS LST Nighttime과 상관성이 제일 높은 것으로 분석되었다. 한파 기간에는 Terra/Aqua MODIS 모두 주간 자료보다 야간 자료의 상관성이 더 높은 것으로 분석되었으며, 특히 Terra MODIS LST Nighttime과의 상관성이 좋은 것으로 분석되었다. 폭염 기간에는 Aqua MODIS LST Daytime 자료가 가장 좋은 것으로 분석되었으나, 전체적인 R이 0.5보다 낮아 추후 활용을 위해서는 식생이나 토지이용, 고도 등 다른 요소를 활용한 추가 분석이 필요할 것으로 판단된다.

• 음성과학
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• 제10권3호
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• pp.29-36
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• 2003

The purposes of this study was to conduct a correlational analysis among $F_^{0}$, Jitter, Shimmer, and NHR (HNR), and NNE estimated by three speech analysis softwares, MDVP, Praat and Dr. Speech. Thirty females and 15 males with normal voice participated in the study. We used Sound Forge 6.0 to record their voice. MDVP, Praat and Dr. Speech were used to measure the acoustic parameters. The Pearson correlation coefficient was determined through a statistical analysis. The results came out as follows: Firstly, there was a strong correlation between $F_^{0}$ and Shimmer of both instruments. However, there was no correlation between Jitter of both instruments. Secondly, Shimmer showed a stronger correlation with HNR, NHR, and NNE than Jitter. Therefore, Shimmer was considered to be more useful and sensitive parameter to identify dysphonic voice compared to jitter.

• 음성과학
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• 제10권4호
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• pp.255-261
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• 2003

The purpose of this study was to investigate correlation of auditory development and language development of children with hearing impairment Eighteen subjects with severe or profound hearing loss participated in this study. They were 22-to 55-month-olds who had hearing parents with no additional disabling conditions. The test material was the Meaningful Auditory Integration Scale (MAIS) and MacArthur Communicative Development Inventory-Korea (MCDI-K). A Pearson Correlation Coefficient was determined through a statistical analysis. The results followed as; firstly there was a strong correlation between auditory development and receptive language development. Secondly, there was a strong correlation between receptive language development and expressive language development. Finally, there was a strong correlation between auditory development and education onset time. Therefore, auditory training is important method for auditory rehabilitation and education onset time is important variation for auditory development.