• The Journal of Korean Physical Therapy
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• 제15권1호
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• pp.119-154
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• 2003

In this paper, the proprioceptive sensitivity was compared by Foot-Hand task method and the effect of the proprioceptive sensitivity and auditory to the standing position between blind and normal children was measured using BPM for 56 children in 7, 8, 9 and 10 years old. There are three measurement methods are used for BPM : Rest, Forward Looking, 'Sound' position. The following conclusions were obtained from the above measurements. 1. In comparison of proprioceptive sensitivity between blind and normal children, there is no significant difference(p > .05). There is no significant difference in comparison of each age group and also there is no difference in each gender group(p > .05). 2. In comparison of standing position measurement between blind and normal children, there is any difference (p > .05) in three measurement(Rest, Forward Looking, 'Sound' position) but there is no significant difference in each gender difference(p > .05). There is any difference between Rest and 'Sound' position of blind children, also there is any difference between Forward Looking and ' Sound ' position, rest and 'Sound' position of normal children(p > .05). 3. There is no significant difference of correlation between proprioceptive sensitivity test and standing position measurement in Pearson correlation coefficient(p > .05).

• 대기
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• 제27권4호
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• pp.483-498
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• 2017

Sky view factor can quantify the influence of complex obstructions. This study aims to evaluate the best available SVF method that represents an urban thermal condition with land cover in complex city of Korea and also to quantify a correlation between SVF and mean air temperature; the results are as follows. First, three SVF methods comparison result shows that urban thermal study should consider forest canopy induced effects because the forest canopy test (on/off) on SVF reveals significant difference range (0.8, between maximum value and minimum value) in comparison with the range (0.1~0.3) of SVFs (Fisheye, SOLWEIG and 3DPC) difference. The significance is bigger as a forest cover proportion become larger. Second, R-square between SVF methods and urban local mean air temperature seems more reliable at night than a day. And as the value of SVF increased, it showed a positive slope in summer day and a negative slope in winter night. In the SVF calculation method, Fisheye SVF, which is the observed value, is close to the 3DPC SVF, but the grid-based SWG SVF is higher in correlation with the temperature. However, both urban climate monitoring and model/analysis study need more development because of the different between SVF and mean air temperature correlation results in the summer night period, which imply other major factors such as cooling air by the forest canopy, warming air by anthropogenic heat emitted from fuel oil combustion and so forth.

• 대한임상검사과학회지
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• 제39권3호
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• pp.156-160
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• 2007

We evaluated the newly developed plastic sodium citrate tubes for routine coagulation test by direct comparison with glass citrate theophylline adenosine dipyridamole (CTAD) tubes. Blood was drawn from 100 patients into glass CTAD tubes and plastic sodium citrate tubes. After collection, samples were centrifuged at 1500 ${\times}$g for 15 min at $22^{\circ}C$. Prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen were measured by using the Coagrex-800 (IRC, Japan). We used comparison plot by linear regression model and difference plot graphs to compare the results of the independent measurements of PT, aPTT, fibrinogen between glass CTAD tubes and plastic sodium citrate tubes. On the comparison study between glass CTAD tubes and plastic sodium citrate tubes, the correlation coefficients (R) were 0.99 for PT, 0.97 for aPTT and 0.97 for fibrinogen. This results implicated good correlation of each parameter between two tubes. Although the difference plot graph analysis showed statistically significant differences between glass and plastic tubes for PT, aPTT and fibrinogen, the range of difference was acceptable according to the CLSI/NCCLS guideline. The plastic sodium citrate tubes showed good correlation with the glass CTAD tubes, so it can substitute glass citrate tube for routine coagulation tests.

• 대한공간정보학회지
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• 제18권2호
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• pp.35-45
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• 2010

본 연구는 고해상도 위성영상을 정사보정하여 위치정확도를 검증하고 정사보정된 고해상도 영상간의 밴드 상관성과 NDVI 상관성을 분석하는데 목적이 있다. KOMPSAT2와 IKONOS 영상의 정사보정은 RPC자료로 정오차를 제거하고 GPS측량자료로 비평면적 왜곡을 보정하였다. 그리고 정사영상내 동일한 위치의 영상점을 선점하여 각 영상의 영상점과 GPS 측량점간 위치정확도를 비교하고 영상간 영상점의 위치정확도를 분석하였다. 밴드 상관성과 NDVI 상관성은 구입시 정사보정된 Quickbird영상과 항공사진을 추가하여 밴드별로 DN값의 기술통계를 구하고 각 영상간 밴드상관성과 NDVI의 상관성을 분석하였다. 그 결과, KOMPSAT2와 IKONOS 정사영상의 위치정확도 비교에서 각 영상내 영상점과 GPS 측량점간 RMSE는 KOMPSAT2가 3.41m, IKONOS가 1.45m로 1.96m의 차이를 보였고 영상점간 RMSE는 1.88m였다. Quickbird, KOMPSAT2, IKONOS, 항공사진을 이용한 영상간 밴드와 NDVI 상관성은 Band2에서 항공사진과 KOMPSAT2의 상관성이 높은 것을 제외하면 모든 Band와 NDVI에서 Quickbird 와 IKONOS의 상관성이 높게 나타났다. 밴드간 상관성이 낮은 경우는 Band1에서 Quickbird와 항공사진, Band2와 Band4에서 KOMPSAT2와 IKONOS, Band3에서 KOMPSAT2와 항공사진이었고 NDVI는 KOMPSAT2가 QuickBird, IKONOS 모두와 낮은 상관성을 보였다.

• International Journal of Air-Conditioning and Refrigeration
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• 제14권3호
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• pp.118-123
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• 2006

A few commonly used correlation equations of the enthalpy of vaporization essential to the analysis of refrigeration cycles are reviewed. A new four-parameter correlation equation is proposed assuming that the enthalpy of vaporization could be represented with a linear form of the temperature and an additional function which slowly decreases as the temperature increases. It is not a common practice to measure the enthalpy of vaporization by experiment; therefore, performance of the new correlation is examined using numeric data from the ASHRAE tables for 22 pure substance refrigerants. The new correlation equation and other existing ones are fitted to the data optimizing the root mean squared deviation. All data points are weighted equally and NBP (normal boiling point) is used as a fixed point since the NBP is important for refrigeration application. The new four-parameter equation yields an average absolute deviation of 0.05% for 22 refrigerants which is smaller than those of other four-parameter equations, such as Guermouche-Vergnaud (0.08%), Aerebrot (0.13%), Radoz-Lyderson (0.08%), and Somayajulu four-parameter equation (0.08%).

• Journal of Nutrition and Health
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• 제22권1호
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• pp.23-31
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• 1989

The purpose of this study was to evaluate the validity of various dietary methods. Dietary intake of 24 patients on regular diet was investigated by three methods. One method was a precise weighing method, the others were 24-hour dietary recall method and convenient dietary questionnaries. The results obtained are summarized as followes ; 1) There were no significant differences in mean nutrient intake of subjects among three dietary survey methods. 2) The validity coefficient between the precise weighing method and 24-hour recall method, ranging from 0.26(fat) to 0.59(carbohydrate) showed significant correlation for carbohydrate, vitamin A, thiamin, riboflavin and ascorbic and intakes. 3) The validity coefficient between precise weighting method and covenient dietary questionnaires, ranging from 0.14(fat) to 0.80(vitamin A), showed a significant correlation for most nutrients. 4) Female showed higher correlation between the precise weighing method and 24-hour recall method than male subjects for most nutrients. However, there was no significant sexual difference of correlation between weighing method and convenient method. 5) The correlation coefficient between the precise weighing method and the other two methods by age group showed younger sujbects have a higher significant correlation than older subjects for most nutrients.

• 한국컴퓨터정보학회논문지
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• 제14권3호
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• pp.75-82
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• 2009

영상의 비교는 PSNR을 이용하는 것이 일반적이다. PSNR이 35이상일 경우 육안으로 품질 차이를 구분하기 어렵다고 판단한다. 2006년 Lee 등은 원본 이미지 대신 원본 이미지의 MSB 비트열을 공개함으로써 소유권을 증명할 수 있는 프로토콜을 제안하면서, 두 이미지의 MSB 비트열의 유사도를 측정하기 위한 새로운 함수를 사용하였다. 이때의 유사도는 품질을 측정하기 위한 PSNR과는 그 의미가 조금 다른 측면이 있다. 즉, 원본 이미지로부터 생성된 대상 이미지가 현저히 떨어질 경우, PSNR은 매우 낮은 값을 보이지만 품질이 떨어지더라도 유사도 측면에서 본다면 두 영상의 상관관계는 매우 높게 나와야 할 것이다. 본 논문에서는 Lee 등이 제안한 MSB 비교 함수를 수정한 후, ICOR함수를 제안하였으며, 이 함수를 이용하여 두 이미지의 상관관계 판단에 적용할 수 있는지 분석하였다.

• 대한물리치료과학회지
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• 제30권4호
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• pp.71-81
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• 2023

Background: The purpose of this study was to comparison and correlation between physical and psychological functions by gender in Judo athletes. Both the physical and psychological factors of athletes are important as factors influencing athletic performance, but there are few papers that have compared and studied the correlation between physical and psychological functions of judo players. Design: Cross sectional study Methods: The 134 participants; high school students, college students, and team players. They used physical functions to measure such as self-describing KOOS, FAOS, ODI, POMS, SCAT, ASMQ, and ACSI-28. Results: There was a significant difference in the physical function according to gender in the KOOS, but no significant difference in the FAOS and ODI. For psychological function, there was a significant difference in the vitality item in the POMS, and a significant difference in the body management, training management, life management, and unique behavior management items in the ASMQ. In the ACSI-28, there were significant differences in coping with adversity, stress repayment, concentration, freedom to worry about matches, and self-coaching behavior items. Physical function and psychological function showed a significant negative correlation. The POMS showed a negative correlation between the ASMQ and ACSI-28, whereas the SCAT showed a positive correlation. Conclusion: The results of this study are expected to be used as a basic data for sports training by gender of Judo athletes.

• 항공우주시스템공학회지
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• 제18권1호
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• pp.46-52
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• 2024

엔진 시운전실은 엔진의 성능 및 운용 특성 요구도를 적절하게 검증할 수 있도록 통제된 시험 환경을 제공해야 한다. 하지만 시운전 설비마다 구조 및 특성이 완전히 같을 수는 없기 때문에, 신규 시운전실은 기준 시운전실과의 Correlation 시험을 통해 시험 결과의 신뢰성을 검증하고 차이점을 보정하는 과정이 필요하다. 본 논문에서는 터보팬과 터보샤프트 엔진의 공통점과 차이점을 바탕으로 Correlation 시험을 수행할 때 고려사항들을 연구하였으며, 경험에 따른 Correlation 시험 절차의 예시를 제시하였다. 향후 본 연구가 엔진 종류에 따른 시험 설비의 인증 표준을 설정하는 것에 도움을 줄 것으로 기대한다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제24권1호
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• pp.36-43
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• 2013

Objectives : The aim of this study was to investigate correlation of childhood trauma experience and parent-adolescents' assessment reports on problem behavior through comparison of delinquent and general adolescents. Methods : First, delinquent adolescents and general adolescents were asked to complete the Childhood Trauma Questionnaire (CTQ). Then, 71 pairs of delinquent adolescents and their parents and 133 pairs of general adolescents and their parents were asked to complete the Korean Youth Self-Report (K-YSR) and the Korean Child Behavior Checklist (K-CBCL). Finally, responses from 410 people were used for the analysis. Results : First, childhood trauma experience score was significantly higher for delinquent adolescents, compared to general adolescents. Second, t-test showed a greater difference between K-YRS and K-CBCL for general adolescents than for delinquent adolescents. Third, in the case of delinquent adolescents, the correlation analysis of K-YSR filled out by adolescents and K-CBCL filled out by parents showed significant correlation in certain areas, including social immaturity, delinquent behaviors, internalization issues, and externalization issues. On the other hand, the correlation analysis of K-YSR and K-CBCL of general adolescents showed significant correlation in all sub-categories. Fourth, the correlation analysis of delinquent adolescents' CTQ and K-YSR showed minimal yet significant correlation in social adaptation, withdrawing, depression/anxiety, and delinquent/aggressive behaviors, however, no correlation was observed between CTQ and K-CBCL. The correlation analysis of general adolescents' CTQ and K-YSR, and CTQ and K-CBCL showed significant correlation in all sub-categories, although the degree of correlation varied. Conclusion : Delinquent adolescents had more childhood traumatic experiences. However, general adolescents' childhood traumatic experiences showed minimal yet significant correlation with various adaptation indicators and their parents responded in a similar way, indicating that general adolescents with childhood traumatic experiences need close care and attention even if they have not shown prominent delinquent behaviors.