• Title/Summary/Keyword: Homogeneity analysis

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A Correlation Research of Digestion According to Sasang Constitution (소화에 관한 체질별 상관성 연구)

  • Baek, Tae-Ho;Choi, Jeong-Rak;Park, Seong-Sik
    • Journal of Sasang Constitutional Medicine
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    • v.16 no.1
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    • pp.112-119
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    • 2004
  • Objectives This paper was designed for studying the features of digestion according to Sasang Constitution and to be helpful to make a diagnosis Sasang Constitution. Using the result of this study, it will be helpful to diagnose a Sasang constitution. Methods There were 588 patients(248 men, 340 women) who answered questionnaire and were diagnosed by the Sasang Constitution Specialist at Constitutional Clinic of Dongguk Bundang Oriental Hospital. Using the response of questionnaire and several statistical techniques such as homogeneity test and multiple comparison, we tried to find the characteristics of each constitution depending on its dining behavior. Results As a result of the analysis of questionnaire, Taeumin and Soyangin answered to 'Because digestion is well, I overeat frequently' many more than Soeumin(p<0.01). Soeumin answered to 'When I eat cold food or greasy food, it hardly digests' many more than Taeumin(p<0.05). Soeumin and Taeyangin answered to 'Because I have indigestion, I have suffered from infancy' many more than Taeumin(p<0.01). Soeumin answered to 'I have easily a digestive upset' many more than Taeumin(p<0.01). Soeumin answered to 'indigestion in case of paying attention' many more than Taeumin and Soyangin(p<0.01).

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A Clinical Study of Sleep According to Sasang Constitution (사상체질에 따른 수면의 특징에 대한 연구)

  • Park, Seong-Sik;Choi, Jeong-Rak
    • Journal of Sasang Constitutional Medicine
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    • v.15 no.3
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    • pp.204-215
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    • 2003
  • Objectives : This paper was for studying the features of sleep according to Sasang Constitution and to be helpful to make a diagnosis Sasang Constitution. Using the result of this study, it will be helpful to diagnose a Sasang constitution. Methods : There were 610 patients(258 men, 352 women) who answered questionnaire and were diagnosed by the Sasang Constitution Specialist at Constitutional Clinic of Dongguk Bundang Oriental Hospital. Using the response of questionnaire and several statistical techniques such as homogeneity test and multiple comparison, we tried to find the characteristics of each constitution depending on its sleep behaviors. 3. Results : As a result of the analysis of questionnaire, Soeumin has many dreams in comparison with other constitution(p<0.01). Taeumin and Soyangin have a few dream in comparison with Soeumin(p<0.01). Taeyangin has a characteristic that 'he is not drowsy comparatively, he awakes easily, he is not drowsy if it is cold, he is not drowsy and has many dreams if he has many stress.(p<0.01) Taeumin has a characteristics that 'he has a few dream in ordinary times'(p<0.01).

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Natural Frequencies of Laminated Composite Plates with Attached Mass Under an Uniform Axial-Loading (등분포 축하중을 받고 첨가질량이 재하된 적층복합판의 고유진동수에 관한 연구)

  • Hong, Chang-Woo;Kim, Kyeong-Jin
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.4 no.4
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    • pp.181-190
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    • 2000
  • Vibration analysis for some of simple supported antisymmetric composite laminated plate loaded uniform axial-loading and attached mass was carried out. Because it is complicated to analyze this type of plate by theory of antisymmetric laminate possibility for application of theory of special orthotropic laminate was studied, and natural frequency of laminated plate attached mass was calculated. Stiffness $B_{16}$, $B_{26}$, $D_{16}$, $D_{26}$ for this type of antisymmetric laminated plate converge on zero as the number of ply increases and it is possible to use classical theory by reason that considered plate has quasi-homogeneity without relevance to variation of angle. Difference between results by theory of antisymmetric and special orthotropic laminate is 0.36~1.96%, therefore it is convenient to analyze this by use of theory of special orthotropic laminate. When composite laminated plate with attached mass is analyzed range that Was able to neglect self-weight of plate was proposed.

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The Effects of Foot Reflexology on Pain and Depression of Middle-aged Women with Osteoarthritis (발반사마사지가 골관절염을 가진 중년여성의 통증과 우울에 미치는 효과)

  • Oh, Hyun-Sook;Ahn, Seong-Ah
    • The Korean Journal of Rehabilitation Nursing
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    • v.9 no.1
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    • pp.25-33
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    • 2006
  • Purpose: This study was to examine the effects of foot reflexology on pain and depression of middle-aged women with Osteoarthritis Method: The subjects were 41 osteoarthritis patients resided in the Jinju city from March to May, 2005. The foot reflexology was applied to the experimental group 3 times a week for 4 weeks, 30 minutes eachs. For the data analysis, $X^2$-test was conducted to verify the homogeneity of general characteristics, and t-test was done to verify the homogeneity of pain and depression. To examine the relative efficacy of the intervention, t-test, paired t-test and repeated measures ANOVA were conducted. Results: After foot reflexology, the subjects in experimental group showed significant improvement in pain (F=155.77, p=.000) and depression ((F=20.00, p=.000). Conclusion: The results suggest that the foot reflexology is effective in relieving of pain and depression. Therefore, it is necessary to develop foot reflexology as an independent nursing intervention.

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The Effects of Foot Reflexology on ADL and Fatigue in Stroke Patients (발반사요법이 뇌졸중환자의 일상생활동작과 피로에 미치는 효과)

  • Song, Mi-Ryeong;Song, Hyeong-Mi
    • The Korean Journal of Rehabilitation Nursing
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    • v.8 no.2
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    • pp.139-148
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    • 2005
  • Purpose: This study was to examine the effects of foot reflexology on ADL and fatigue in stroke patients. Method: The subjects were 31 stroke patients hospitalized in the Oriental Medicine Hospital of D University from June to November, 2002. Foot reflexology was applied to the experimental group twice a week for 6 weeks, 40 minutes each. For the data analysis, $x^2$-test was conducted to verify the homogeneity of general characteristics and clinical characteristics, and t-test was done to verify the homogeneity of ADL and fatigue. To examine the relative efficacy of the intervention, ANOVA and ANCOVA were conducted. Results: After foot reflexology, the subjects in the experimental group showed significant improvement in ADL. They also had less physical, psychological, and neurosensory fatigue, which are three areas of fatigue. Conclusion: The results suggest that foot reflexology is an effective intervention that helps the body work efficiently, eases stress and strain, and enhances the homeostasis of the body through stimulating the reflex zone of internal organs in the body. Therefore, it is necessary to develop foot reflexology as an unique nursing intervention.

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A Study on Prototype Hybrid (LTS/HTS) Magnet for NMR Application

  • Choi, Suk-Jin;Hwang, Young-Jin;Ko, Tae-Kuk
    • Journal of Magnetics
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    • v.16 no.3
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    • pp.312-317
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    • 2011
  • NMR over 1 GHz (23.5 T) level has difficulties in design and fabrication with only low temperature superconducting (LTS) wire because of its material characteristics such as the decay of critical current under the magnetic field. Because High temperature superconducting (HTS) tape has a good performance under the extremely high magnetic field, it has been developed for high-field magnet over 23.5 T. In this paper, the LTS magnet was made for applying magnetic fields externally and the HTS coil was designed and fabricated. The electromagnetic field analysis has been done with respect to the structure and the operating current of the LTS and HTS coil. Considering to the field homogeneity and the center field, the design parameters which is suitable for the HTS coil were found. The HTS insert coil was impregnated with epoxy resin in order to prevent the movement of winding during energizing the magnet. The hybrid magnet (LTS/HTS) magnet was fabricated and tested based on the design parameters. The experimental result shows that the LTS background magnet and the HTS insert coil can be operated stable beyond 220 A and 210 A. The final value 4.32 T at the center was acquired.

Developing the Prediction Model for Color Design by the Image Types in the Office Interior (오피스 실내 색채계획을 위한 이미지별 예측모델 작성)

  • 진은미;이진숙
    • Korean Institute of Interior Design Journal
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    • no.32
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    • pp.97-104
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    • 2002
  • The purpose of this study is to suggest the prediction model for the color design by the image types in the office interior. This prediction model of the color design is for the more comfortable environment by using suitable, various colors fitted with business functions. In this research, we carried out the evaluation experiment with the variables such as the color on ceiling, wall, floor and the harmonies of color schemes. We set the prediction index through the multi-regression analysis. And the prediction model was made by these results. The design methods by the prediction model are as follows. 1) The $\ulcorner$variable$\lrcorner$ image was deeply influenced by the value and chroma and it was marked high in low value and high chroma and the harmonies of contrast and different color. 2) The $\ulcorner$comfortable$\lrcorner$ image was related to the value and chroma and it was marked high in high value and low chroma and harmonies of homogeneity and similar. 3) The $\ulcorner$warm$\lrcorner$ image was greatly influenced by the hue and the harmony of color schemes, and it was marked high in the warm colors and harmonies of homogeneity.

A Study of Psychometric Function Curve for Korean Standard Monosyllabic Word Lists for Preschoolers (KS-MWL-P) (한국표준 학령전기용 단음절어표 (Korean Standard Monosyllabic Word Lists for Preschoolers, KS-MWL-P)의 심리음향기능곡선 연구)

  • Shin, Hyun-Wook;Kim, Jin-Sook
    • The Journal of the Acoustical Society of Korea
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    • v.28 no.6
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    • pp.534-541
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    • 2009
  • Word recognition test (WRT) for the children can be useful for diagnosing the degree of communication disability, prescribing hearing instruments, planning aural rehabilitation and speech therapy, and determination of site of lesions. The Korean standard monosyllabic word lists for preschoolers (KS-MWL-P) were developed considering the criteria given by the literatures. However, the authors of KS-MWL-P suggested more children should be included to verify homogeneity of the lists using psychometric function curve since only 8 children participated in the developing process. The purpose of this study was to explore the homogeneity of KS-MWL-P for supplementing the limitations of the lists employing psychometric analysis. To 23 preschoolers who have normal-hearing, 100 monosyllabic KS-MWL-P words were examined with the pictures. Psychometric function curve with linear slopes of 20% and 80%'s correct rates through accounting recognition scores of each monosyllabic word at variable intensities from -10 to 40 dBHL was obtained and analyzed. As a result, s-shaped psychometric function curve was presented with increasing correct rate depending on intensity and showed no statistical significant differences among each word and list. The congruous graph shapes among lists also indicated good homogeneity and the list 1,2,3,4's average slopes were 4.48, 3.86, 4.65, 4.50. It was verified that the homogeneity was suitable because the analysis of variance showed no statistical significance among lists (p>0.05). However, KS-MWL-P's order of slope according to the order of the number of items, $1{\sim}10$, $1{\sim}20$, $1{\sim}25$ showed no difference with the p-value of 0.93, 0.59, 0.91, 0.70 for the lists 1,2,3, and 4, respectively. Although KS-MWL-P was assumed that the lower-numbered items were easy for testing younger ages, this study's results could not agree with the author's conclusion. Considering this matter, rearranging of the number of items should be performed according to the analysis of slope suggested by this study for testing younger children with easier items. Other than this, in conclusion, KS-MWL-P was proved to be useful for clinical and rehabilitative evaluating and training tools for preschoolers.

Estimating design floods for ungauged basins in the geum-river basin through regional flood frequency analysis using L-moments method (L-모멘트법을 이용한 지역홍수빈도분석을 통한 금강유역 미계측 유역의 설계홍수량 산정)

  • Lee, Jin-Young;Park, Dong-Hyeok;Shin, Ji-Yae;Kim, Tae-Woong
    • Journal of Korea Water Resources Association
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    • v.49 no.8
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    • pp.645-656
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    • 2016
  • The study performed a regional flood frequency analysis and proposed a regression equation to estimate design floods corresponding to return periods for ungauged basins in Geum-river basin. Five preliminary tests were employed to investigate hydrological independence and homogeneity of streamflow data, i.e. the lag-one autocorrelation test, time homogeneity test, Grubbs-Beck outlier test, discordancy measure test ($D_i$), and regional homogeneity measure (H). The test results showed that streamflow data were time-independent, discordant and homogeneous within the basin. Using five probability distributions (generalized extreme value (GEV), three-parameter log-normal (LN-III), Pearson type 3 (P-III), generalized logistic (GLO), generalized Pareto (GPA)), comparative regional flood frequency analyses were carried out for the region. Based on the L-moment ratio diagram, average weighted distance (AWD) and goodness-of-fit statistics ($Z^{DIST}$), the GLO distribution was selected as the best fit model for Geum-river basin. Using the GLO, a regression equation was developed for estimating regional design floods, and validated by comparing the estimated and observed streamflows at the Ganggyeong station.

Error cause analysis of Pearson test statistics for k-population homogeneity test (k-모집단 동질성검정에서 피어슨검정의 오차성분 분석에 관한 연구)

  • Heo, Sunyeong
    • Journal of the Korean Data and Information Science Society
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    • v.24 no.4
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    • pp.815-824
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    • 2013
  • Traditional Pearson chi-squared test is not appropriate for the data collected by the complex sample design. When one uses the traditional Pearson chi-squared test to the complex sample categorical data, it may give wrong test results, and the error may occur not only due to the biased variance estimators but also due to the biased point estimators of cell proportions. In this study, the design based consistent Wald test statistics was derived for k-population homogeneity test, and the traditional Pearson chi-squared test statistics was partitioned into three parts according to the causes of error; the error due to the bias of variance estimator, the error due to the bias of cell proportion estimator, and the unseparated error due to the both bias of variance estimator and bias of cell proportion estimator. An analysis was conducted for empirical results of the relative size of each error component to the Pearson chi-squared test statistics. The second year data from the fourth Korean national health and nutrition examination survey (KNHANES, IV-2) was used for the analysis. The empirical results show that the relative size of error from the bias of variance estimator was relatively larger than the size of error from the bias of cell proportion estimator, but its degrees were different variable by variable.