• 제목/요약/키워드: Correlations Analysis

검색결과 3,885건 처리시간 0.03초

3D Blood Pressure Pulse Analyzer로 측정한 맥파 에너지와 산후 부종과의 상관성 연구 (Correlations between Postpartum Edema and Pulse Energy Measured by 3D Blood Pressure Pulse Analyzer)

  • 이지연;윤영진
    • 대한한방부인과학회지
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    • 제27권1호
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    • pp.167-175
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    • 2014
  • Purpose: This study was performed to find correlations between Edema Index and Pulse Energy in early postpartum period. Methods: Fiftynine postpartum women were participated in this study which was conducted with Inbody 720 (Biospace Co. Ltd) and 3D Blood Pressure Pulse Analyzer (3D-MAC). Edema Index (Extra Cellular Water/Total Body Water) calculated after body composition analysis and 3D-MAC result (Pulse Energy) were analysed within a week after delivery. Results: The results were as follows 1. Edema Indexes of the upper, lower limbs, trunk and whole body were associated with each other respectively. 2. Edema Indexes and Right Kwan pulse energy had significant positive correlation. 3. Right Kwan pulse energy showed positive correlations with Left Kwan, Right Chon, Right Cheok. Conclusions: Viscera associated with Postpartum Edema are Spleen, Lung, Liver and Vital Gate. The most important thing is thought to be Spleen.

Association between Solar Variability and Teleconnection Index

  • Kim, Jung-Hee;Chang, Heon-Young
    • Journal of Astronomy and Space Sciences
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    • 제36권3호
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    • pp.149-157
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    • 2019
  • In this study, we investigate the associations between the solar variability and teleconnection indices, which influence atmospheric circulation and subsequently, the spatial distribution of the global pressure system. A study of the link between the Sun and a large-scale mode of climate variability, which may indirectly affect the Earth's climate and weather, is crucial because the feedbacks of solar variability to an autogenic or internal process should be considered with due care. We have calculated the normalized cross-correlations of the total sunspot area, the total sunspot number, and the solar North-South asymmetry with teleconnection indices. We have found that the Southern Oscillation Index (SOI) index is anti-correlated with both solar activity and the solar North-South asymmetry, with a ~3-year lag. This finding not only agrees with the fact that El $Ni{\tilde{n}}o$ episodes are likely to occur around the solar maximum, but also explains why tropical cyclones occurring in the solar maximum periods and in El $Ni{\tilde{n}}o$ periods appear similar. Conversely, other teleconnection indices, such as the Arctic Oscillation (AO) index, the Antarctic Oscillation (AAO) index, and the Pacific-North American (PNA) index, are weakly or only slightly correlated with solar activity, which emphasizes that response of terrestrial climate and weather to solar variability are local in space. It is also found that correlations between teleconnection indices and solar activity are as good as correlations resulting from the teleconnection indices themselves.

Correlation among Motor Function and Gait Velocity, and Explanatory Variable of Gait Velocity in Chronic Stroke Survivors

  • Lee, Dong Geon;Lee, Gyu Chang
    • Physical Therapy Rehabilitation Science
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    • 제11권2호
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    • pp.181-188
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    • 2022
  • Objective: The purpose of this study to investigate the correlations among the motor function, balance, and gait velocity and the strength that could explain the variation of gait velocity of chronic stroke survivors. Design: This was a cross-sectional cohort study. Methods: Thirty hemiplegic stroke survivors hospitalized in an inpatient rehabilitation center were participated. The muscle tone of ankle plantarflexor and muscle strength of ankle dorsiflexor were measured respectively with modified Ashworth scale (MAS) and hand-held dynamometer. And the motor recovery and function with Fugl-Meyer assessment (FMA), balance with Berg balance scale (BBS) and timed up and go (TUG) test were measured. Gait velocity was measured with GAITRite. The correlation among motor function, muscle tone, muscle strength, balance, and gait were analyzed. In addition, the strength of the relationship between the response (gait velocity) and the explanatory variables was analyzed. Results: The gait velocity had positive correlations with FMA, muscle strength, and BBS, and negative correlation with MAS and TUG. Regression analysis showed that TUG (𝛽=-0.829) was a major explanatory variable for gait velocity. Conclusions: Our results suggest that gait velocity had correlations with muscle strength, MAS, FMA, BBS, and TUG. The tests and measurements affecting the variation of gait velocity the greatest were TUG, followed by FMA, BBS, muscle strength, and MAS. This study shows that TUG would be a possible assessment tool to determine the variation of gait velocity in stroke rehabilitation.

동적공간패널모형을 이용한 지역 실업률 결정요인 분석 (Analysis of Determinants of Regional Unemployment Rate Using Dynamic Spatial Panel Model)

  • 김소연;류수열
    • 아태비즈니스연구
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    • 제13권1호
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    • pp.277-288
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    • 2022
  • Purpose - This study analyzed the determinants of local unemployment rate in Korea using panel data from 16 metropolitan cities and provinces from 2000 to 2018. Design/methodology/approach - We use a dynamic spatial panel model that considers characteristics of the regional unemployment rate such as the common factors effect, spatial dependence, and serial correlations. Findings - The local unemployment rate is affected by the past and present values of the national unemployment rate. And it is significantly affected by the past local unemployment rate and the past neighboring unemployment rate because spatial dependence and serial correlations are clearly present. In addition, when the industrial structure diversity and labor productivity were high, the regional unemployment rate decreased, and when the education level was high, the regional unemployment rate increased. Research implications or Originality - In order to reduce regional unemployment rate, it is necessary to plan and establish regional customized industrial structure policies under the stance of diversification rather than specializing the regional industrial structure and accompany improvement of the quality of education with the number of years of education. In addition, the redistribution of labor from low labor productivity sectors to high labor productivity sectors through technology development will help to reduce the local unemployment rate.

공군 조종사의 안전의식과 그릿에 관한 예비 연구 (A Pilot Study on Air Force Pilots' Safety Consciousness and Grit)

  • 권오영;신승환
    • 한국항공운항학회지
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    • 제30권4호
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    • pp.98-104
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    • 2022
  • The aim of this study was to analyze pilots' safety consciousness and grit level, and the correlations between them. Participants were 142 pilots for pilot qualification (n=78), certification 1 (n=12), and 2 (n=52) level. The data were gathered from questionnaire for safety consciousness and grit scale from April to August 2022. Statistical treatment were processed (by SPSS 21.0 for windows) by descriptive analysis for all variables. One-way ANOVA was processed for analyze pilots' safety consciousness and grit scale by their groups. And the correlations were analyzed for investigating relations between them. Statistical significancy was set as p<.05. The results were as follows. First, pilots' safety consciousness showed higher trend in certification 1, qualification and certification 2 as considerable. The grit scale showed higher trend in qualification, certification 2 and 1 in order. The grit and its subfactor passion showed significance (p<.05). Second, the correlations among factors showed significance(p<.05). Conclusionly, safety consciousness was importantly recognized to the certification 1(F-4/5) pilots and grit to qualification pilots. The limit of this research was in small sample size, although need further study for practical using.

초등학교 아동의 비만 진단에 있어서 생체 전기저항 분석법의 의의 (The Clinical Significance of Bioelectrical Impedance Analysis for The Diagnosis of Obesity on Elementary Students)

  • 최기철;안영준;양은석;박상기;박종;문경래
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제1권1호
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    • pp.107-114
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    • 1998
  • 목 적: 소아 비만의 평가에 이용되는 측정방법들 간의 상관관계와 생체 전기저항 분석법의 유용성을 알아보고자 한다. 대상 및 방법: 1997년 5월부터 7월까지 광주시내 초등학교 남.여 학생 206명을 대상으로 하여 신장, 체중, 허리둘레, 둔부둘레, 피지두께를 계측한 후, 생체전기저항 법에 신체조성을 측정하여 각 측정방법들 간의 상관관계를 비교하였다. 피지 두께치로 계산한 체지방률과 생체전기저항 법으로 측정한 체지방률의 상관관계를 비교 분석하였다. 결 과: 1) 남아에서 비만 측정방법들 간의 상관 관계; 상완 배측부 피지두께는 체질량 지수(r=0.74)와 가장 높은 상관관계가 있었고, 다음으로 체지방률(r=0.59)과 높은 상관관계가 있었으며 체중, 뢸러지수, 체지방량 순서로 비교적 높은 상관 관계가 있었다. 허리/둔부의 둘레 비, 신장, 체지방체중과는 낮은 상관 관계가 있었다(p<0.001). 견갑골하부 피지두께는 체질량 지수(r=0.64)와 가장 높은 상관관계가 있었으며 뢸러 지수, 체중, 체지방률, 체지방량 순서로 비교적 높은 상관관계가 있었으나(p<0.001), 허리/둔부의 둘레비, 신장, 체지방체중 등과는 낮은 상관관계가 있었다(p<0.01). 생체전기저항법으로 측정한 체지방률은 체질량지수(r=0.62)와 가장 높은 상관관계가 있었으며 상완 배측부 피지두께, 뢸러 지수, 체지방량, 견갑골하부 피지 두께, 체중의 순서로 비교적 높은 상관관계가 있었다(p<0.001). 제지방체중, 신장과는 유의한 상관관계가 없었다. 2) 여아에서 비만 측정방법들 간의 상관관계; 상완 배측부 피지두께는 체질량 지수와 가장 높은 상관관계가 있었고(r=0.70), 다음으로 체중, 제지방체중, 신장, 체지방률 순서로 높은 상관 관계가 있었다(p<0.001). 그러나 뢸러 지수, 허리/둔부의 둘레 비, 체지방량과는 상대적으로 낮은 상관 관계가 있었다(p<0.05). 견갑골하부 피지두께는 체질량 지수, 체중, 제지방체중의 순서로 비교적 높은 상관관계가 있었으며(p<0.001), 뢸러 지수, 신장과는 낮은 상관관계가 있었다(p<0.01). 그러나 체지방률, 허리/둔부 둘레 비, 체지방량과는 유의한 상관관계가 없었다. 생체전기저항법으로 측정한 체지방률은 체질량지수, 뢸러지수, 상완 배측부 피지두께와의 순서로 비교적 높은 상관관계를 보였으며(p<0.001), 체지방량, 체중과는 상대적으로 낮은 상관 관계를 보였다. 그러나 견갑골 하부 피지두께, 신장, 제 지방체중, 허리/둔부의 둘레 비와는 유의한 상관 관계가 없었다. 3) 생체전기저항 법과 피하지방 두께치에 의한 체지방률; 피지두께로 계산한 체지방률과 생체 전기저항 법으로 측정한 체지방률은 유의한 상관 관계가 있었으며(p<0.01), 특히 여아보다 남아에서 더 높은 상관관계가 있었다. 결 론: 피지두께치 및 생체전기저항 법으로 측정한 체지방률을 소아의 비만 판정 및 추적 관찰에 유용하게 사용할 수 있다.

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하천에서의 영양물질 관리를 위한 총질소 환경기준 설정에 관한 연구 (Deriving Water Quality Criteria of Total Nitrogen for Nutrient Management in the Stream)

  • 김학관;정한석;배승종
    • 한국농공학회논문집
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    • 제57권3호
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    • pp.121-127
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    • 2015
  • The objective of this study is to suggest the water quality criteria of total nitrogen in order to efficiently manage the nutrient pollution in the stream. For this, correlations between water quality parameters were examined using the water quality data collected from the water quality monitoring network in the four rivers between 2003 and 2012. T-N showed positive correlations with T-P (0.636), COD (0.577), BOD (0.574), TOC (0.440), and SS (0.367). The statistical analysis including percentile analysis for the T-N and T-P concentrations was utilized to develop the water quality criteria of T-N. The feasibility of the suggested water quality criteria was evaluated by calculating the achievement rate to water quality target at the representative points in mid-watershed, then the draft water quality standard of T-N was suggested. The suggested water quality standard of T-N in the stream may be used to efficiently control the nutrient pollution in the public water body.

자가간호역량의 행사 측정도구의 타당성 및 예측요인 조사 (Validation of an Instrument to Measure Exercise of Self-Care Agency and its Predictors)

  • 소향숙;이은숙
    • 대한간호학회지
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    • 제19권3호
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    • pp.273-284
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    • 1989
  • The aim of this investigation was to delineate concepts contributing to the Exercise of Self-Care Agency (E.S.C.A.) Scale developed by Kearney & Fleischer (1979) and to test its construct validity and its predictors. The results are summarized as follows ; 1. By means of principal factor analysis and maximal likelihood factor analysis upon data generated from 280 undergraduate students, the factors of Concern about Health Knowledge, self-Concept, Information - Seeking Behavior, Decision -making and Responsibility, Self-esteem, and Passivity emerged. The total percent of variance explained by the 6 factors was 75.1% 2. To assess factor independence and instrument homogeneity, correlations among the 6 factors were computed. The correlations ranged from .24 to .46 indicating that the factors and the items were not too similar or redundant. 3. Test-retest reliability of the total scale is r=.70. Cronbach's $\alpha$ coefficient for internal consistency of the total scale is .86 and that of the factors ranged from .750 to .661 (only factor 6 .497). 4. In additional analysis of the Exercise of Self-Care Agency Scale in relationship to Multiple Health Locus of Control, Family Environmental Scale, and Cornell Medical Index using stepwise multiple regression, the Internal Health Locus of Control Score predicted 21.8%(F=53.34, p=.0001), Family Environmental Score 8.3%(F=22.59, P=.0001), Modified Cornell Medical Index Score 5.4%(F=15.74, P=.0001) of the score of the E.S.C.A.

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sEMG와 Dynamometer를 이용한 슬관절 신전근의 피로 분석 (Fatigue Analysis of Knee Extensor Using sEMG and Dynamometer)

  • 정진규;김용남;박장성;김태열
    • 대한임상전기생리학회지
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    • 제3권1호
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    • pp.31-47
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    • 2005
  • Fatigue is a common experience in our daily life and in therapeutic exercises. Human muscle fatigue has been studied using a wide variety of exercise models, protocols and assessment methods. This study conducts quantitative evaluation of fatigue of knee extensor with surface electromyography and dynamometer and is to provide basic materials in physical therapy diagnosis and assessment of skeletal muscle. Measurement of two stages was conducted with 88 normal adults between their twenties and seventies, correlations and differences using collected data according to age was compared and correlations among measured items were analyzed and then the following conclusions were obtained. Analysis of sEMG and dynamometry of knee extensor showed that MDF, FI, MVIC, ET had the closest relations with age and MDF, FI, MVIC were significantly increase with aging. In addition, it was found that there were high correlation among items of analysis.

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3차원 보행분석을 통한 무릎 모음 모멘트와 고관절 내외회전의 임상적 특성 (Clinical Characteristics of Hip Joint Rotations and Knee Adduction Moment through 3D Gait Analysis)

  • 김용욱;강승묵
    • 대한통합의학회지
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    • 제5권4호
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    • pp.41-48
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    • 2017
  • Purpose : The purpose of this study was to verify the relationships among the knee adduction moment, hip rotation range, strength of hip rotators, and Foot Posture Index of healthy young adults. Method : Thirty-two healthy adults(24 male, 8 females) participated in this study. Subjects performed 5 walking trials to evaluate the knee adduction moments using a three-dimensional motion analysis system. Hip rotation ranges and hip rotator strengths were measured using a standard goniometer and a handheld dynamometer, respectively. The mean of three trials of clinical tests was used for data analysis. Results : The first peak knee adduction moment was significantly correlated with the hip rotation ranges and hip rotator strengths (P<.05). The second peak knee adduction moment was showed significant correlations with hip external rotation and rotation ratio. There were no correlations between Foot Posture Index and all knee adduction moments (P>.05). Conclusion : This study suggests that imbalances of the range of motion and strength of the internal and external rotation of the hip joint can affect knee adduction moments. The impact may exacerbate musculoskeletal disorders such as osteoarthritis of the knee. Therefore, further studies should be conducted to evaluate the effects of clinical interventions to correct these imbalances on the reduction of the knee adduction moments in patients with knee osteoarthritis.