• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2009년도 학술발표회 초록집
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• pp.1311-1315
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• 2009

Understanding of the hydraulics of flow is very important to support the management of river. The cross-sectional area, average velocity, flow depth and discharge can be regarded as a power function each other. In this paper the flow of Bocheong stream basin is experimentally studied. The correlation analysis was performed between observed hydraulic factors by the power type function. The constants resulted from the correlation analysis were calculated by the geomorphologic characteristics of the watershed using the power type function. The correlation coefficients between the hydraulic factors were appeared close to unit having strong correlationship. The two conditions of equality of the continuity equation were analysed, and the conditions were found to be good results. From these results the observed hydraulic data of Bocheong stream basin can be concluded as a reliable data. The correlation coefficients between the parameters of the hydraulic characteristics and geomorphologic factors were found to be close to unit.

• Journal of Information Processing Systems
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• 제14권5호
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• pp.1215-1224
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• 2018

Interval-valued neutrosophic hesitant fuzzy set (IVNHFS) is an extension of neutrosophic set (NS) and hesitant fuzzy set (HFS), each element of which has truth membership hesitant function, indeterminacy membership hesitant function and falsity membership hesitant function and the values of these functions lie in several possible closed intervals in the real unit interval [0,1]. In contrast with NS and HFS, IVNHFS can be more flexibly used to deal with uncertain, incomplete, indeterminate, inconsistent and hesitant information. In this study, I propose the novel correlation coefficient of IVNHFSs and my paper discusses its properties. Then, based on the novel correlation coefficient, I develop an approach to deal with multi-attribute decision-making problems within the framework of IVNHFS. In the end, a practical example is used to show that the approach is reasonable and effective in dealing with decision-making problems.

• 한국식품영양과학회지
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• 제27권5호
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• pp.920-927
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• 1998

The purpose of this study was to investigate the correlation between serum component and immune function in Korean female college students according to the body mass index. There were significant increased in weight, body fat, LBM, TBW, WHR in subjects as their BMI increase(p<0.001). It was found obese group had higher levels of serum components such as total cholesterol, LDL-cholesterol and Cu levels than those of the normal group. There was a significant positive correlation between HDL-cholesterol level and NK cell number(p<0.01), between A/G ratio and T lympocytes number(p<0.05), between Cu levels and B lympocytes(p<0.01) in normal group. There was a significant positive correlation between TG level and CD4/8 ratio(p<0.001), between and IgG(p<0.001) in obese group.

• 재활복지
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• 제20권4호
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• pp.265-281
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• 2016

본 연구는 삼킴장애를 가진 뇌졸중 환자의 특성에 따른 삼킴기능, 식이수준, 인지기능, 일상생활의 비교와 상관관계를 알아보고자 하였다. 본 연구의 대상자들은 삼킴장애가 있는 뇌졸중 환자 56명이었다. 결과측정은 기능적 삼키장애 척도(FDS), 미국언어청각협회 삼킴척도(ASHA NOMS), 한국판 간이 정신상태 검사(K-MMSE), 한국판 수정바델지수(K-MBI)를 사용하였다. 수집한 자료는 대상자들의 일반적 특성에 따른 각 평가들의 차이를 비교하기 위하여 독립 t 검정을 이용하여 분석하였고 각 평가들의 상관관계를 알아보기 위하여 피어슨 상관분석을 수행하였다. 연구 결과, 대상자들의 손상위치에 따른 삼킴기능은 유의한 차이가 있었다. 발병기간에 따른 인지기능은 유의한 차이가 있었다. 대상자들의 나이는 식이수준, 인지기능과 유의한 상관이 있었다. 삼킴기능은 식이수준, 인지기능과 유의한 상관이 있었다. 인지기능은 식이수준, 일상생활과 유의한 상관이 있었다. 본 연구의 결과를 기반으로 삼킴장애가 있는 뇌졸중 환자에 대한 삼킴재활 치료는 환자들의 특성과 인지기능을 고려하여 수행해야 할 것으로 사료된다.

• Journal of information and communication convergence engineering
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• 제8권4호
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• pp.349-354
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• 2010

Moving pixel displacement detection algorithm using correlation functions for making panorama image on the continuous images is presented in this paper. The input images get from a CMOS image sensor (CIS). The camera is maintained by constant brightness and uniform sensing area in test input pattern. For simple navigation and capture image has to 70% overlapped region. A correlation rate in two image data is evaluated by using reference image with first captures, and compare image with next captures. The displacement of the two images are expressed to second order function of x, y and solved with finding the coefficient in second order function. That results in the change in the peak correlation displacement from the reference to the compare image, is moving to pixel length. The navigating error is reduced by varying the path because the error is shown in the difference of the positioning vector between the true pixel position and the navigated pixel position. The algorithm performance is evaluated to be different from the error vector to vary the navigating path grid.

• Industrial Engineering and Management Systems
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• 제1권1호
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• pp.79-86
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• 2002

This paper proposes a new algorithm for estimating ARMA model parameters. In estimating ARMA model parameters, several methods such as generalized least square method, instrumental variable method have been developed. Among these methods, the utilization of a bootstrap type algorithm is known as one of the effective approach for the estimation, but there are cases that it does not converge. Hence, in this paper, making use of a cross correlation function and utilizing the relation of structural a priori knowledge, a new bootstrap algorithm is developed. By introducing theoretical relations, it became possible to remove terms, which is liable to include much noise. Therefore, this leads to robust parameter estimation. It is shown by numerical examples that using this algorithm, all simulation cases converge while only half cases succeeded with the previous one. As for the calculation time, judging from the fact that we got converged solutions, our proposed method is said to be superior as a whole.

• 천문학회보
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• 제42권2호
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• pp.55.4-55.4
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• 2017

For modified gravity models with screening mechanisms, the signal of modified gravity is larger at low density areas. We could add a density weighted mark to galaxy correlation function and increase the signal to noise of modified gravity detection. Based on mock galaxy catalogs from modified gravity simulations, we try different mark functions and parameters to find the best choices for discreminating modified gravity from GR. In this talk I will present our marked correlation funciton results and discuss its advantages and disadvantages.

• Journal of Information Technology Applications and Management
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• 제22권3호
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• pp.105-114
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• 2015

This paper presents a fast Time Difference of Arrival (TDOA) estimation for sound source localization. TDOA is the time difference between the arrival times of a signal at two sensors. We propose a partial cross correlation method to increase the speed of TDOA estimation for sound source localization. We do this by predicting which part of the cross correlation function contains the required TDOA value with the help of the signal energies, and then we compute the cross correlation function in that direction only. Experiments show approximately 50% reduction in the cross correlation computation time thereby increasing the speed of TDOA computation. This makes it very relevant for real world surveillance.

• 한국통신학회논문지
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• 제22권2호
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• pp.392-400
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• 1997

In this paper we porposed WCHF-fSDF filter to obtain a roration and scale-invariant correlation output. WCHF-fSDF filter is synthesized by each single CHF exttracted from scale-changed and wavelet tranformed imagesfor a refereence image as tranining images. The wavelet transform is defined as the correlation of an input image with a wavelet function. Therefore two 4f optical correlation systems are needed for pattern recognition using wavelet transform. We here include the wavelet function for the input image in the process of the proposed filter design and substitute the two 4f optical correlation system with a single 4f optical correlation system. The Performances of the proposed filter are compared with conventional CHF-SDF, POCHF-SDF filters through the computer simulation. The results of computer simulation show that the proposed filter has the rotation and scale-invariant correlation output and it has better performances than thoseof the conventioanl filters.

• 여성건강간호학회지
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• 제19권2호
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• pp.108-118
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• 2013

Purpose: Sexual function involves a complex interaction of emotions, body image, and intact physical responses. The purpose of this study was to determine the sexual functioning of women who are incontinent and to identify associated factors. Methods: For this descriptive correlation study, data were collected from 147 women with urinary incontinence. Data were analyzed using t-test, ANOVA, and stepwise multiple regression. Results: Mean scores were 22.39 (sexual dysfunction ${\leq}26.55$) for sexual function, 13.38 (of 63) for depression, and 55.47 (range of score 17~85) for body image. Urinary symptoms and daily life symptoms averaged 36.04 (range of score 20~100) and 16.03 (range of score 8~40). Sexual function had a positive correlation with body image and negative correlation with daily life symptoms. Sexual satisfaction, daily life symptoms, marital satisfaction, and frequency of sexual intercourse were factors affecting sexual function. Conclusion: Study results indicate that urinary incontinence has a negative impact on various aspects of sexual function. Nurses should be aware of the wider consideration that needs to be made in relation to general and sexual quality of life when caring for clients suffering from urological diseases.