نتایج جستجو برای: stepwise regression analysis

تعداد نتایج: 2987474  

2015
Nolan J. T. Pearce Adam G. Yates

Best management practices (BMPs) are tools commonly used to mitigate negative impacts of agriculture on water quality; however, the relationship between BMPs and aquatic ecological function is unknown. Our research goal was to determine the association between both stream ecosystem metabolism and water quality, and the abundance and location of four different BMPs in agricultural catchments. Di...

2005
P. J. van Helvoort Peter Filzmoser Pauline F.M. van Gaans

Sequential Factor Analysis (seqFA) is presented here as an enhanced alternative to multivariate factorial techniques including robust and classical Factor Analysis (FA) or Principal Component Analysis (PCA). A geochemical data set of 145 sediment samples from very heterogeneous, mainly riverine, deposits of the Rhine-Meuse delta (The Netherlands) analyzed for 27 bulk parameters was used as a te...

Journal: :تحقیقات علوم رفتاری 0
ایلناز سجادیان حمید طاهر نشاط دوست حسین مولوی رضا باقریان سرارودی ilnaz sajjadian hamid taher neshat dost

aim and background: pain is a complex experience involving psychological factors which results in functional disorder. this study aimed to analyze the correlation between cognitive and emotional factors with chronic low back pain among women in isfahan, iran. methods and materials: in this cross-sectional research, the target population included all women with chronic low back pain that referre...

2012
Kyung Do Han Yong Gyu Park

purpose of this section is to show how many observations are actually analyzed in multivariate analyses, such as multiple linear regression analysis or multiple logistic regression analysis, when there are different numbers of missing values in each explanatory variable. Let’s perform a multiple linear regression using the following hypothetical data (Table 1). In this data, explanatory variabl...

H. Rahimi N.M. Yaghoubi

The current paper studies the relationship between organizational spirituality and organizational health in the Department of Culture and Islamic Guidance consisting of 168 employees. Data were gathered using two questionnaires. The validity of the questionnaires was confirmed by the academic and organizational experts, and the reliability was tested using Cronbach's alpha. The collected da...

H. Rahimi N.M. Yaghoubi

The current paper studies the relationship between organizational spirituality and organizational health in the Department of Culture and Islamic Guidance consisting of 168 employees. Data were gathered using two questionnaires. The validity of the questionnaires was confirmed by the academic and organizational experts, and the reliability was tested using Cronbach's alpha. The collected da...

2015
Iosune Torio Alexandra Bagney Monica Dompablo Maria Jose Campillo Lorena Garcia-Fernandez Javier Rodriguez-Torresano Miguel Angel Jimenez-Arriero Tomas Palomo Roberto Rodriguez-Jimenez

Background and Objectives: A relationship has been found between cognition and functioning in patients with schizophrenia. Our objective was to study the relationship between the cognitive domains assessed by the MATRICS Consensus Cognitive Battery (MCCB), and functioning as evaluated using the functioning subscale of the Global Assessment of Functioning scale (GAF-f). Methods: A sample of 83 c...

2017
Yibo Tang Meinan Zhang

Objective: To determine the influencing factors for hospital cost of patients with spinal fractures using E-CHAID category tree, we performed this retrospective study. Patients and methods: The data on 2109 patients with spinal fractures in our hospital, including the comorbidity conditions, surgical and other clinical characteristics, were collected. After Pearson correlation test was performe...

2003
Yee Leung Chang-Lin Mei Wen-Xiu Zhang

Geographically weighted regression (GWR) is a way of exploring spatial nonstationarity by calibrating a multiple regression model which allows different relationships to exist at different points in space. Nevertheless, formal testing procedures for spatial nonstationarity have not been developed since the inception of the model. In this paper the authors focus mainly on the development of stat...

2006
Di Wu Lei Feng Yong He

This paper presents a method based on chemometrics analysis to select the optimal wavebands for variety discrimination of Chinese cabbage seed by using a Visible/Near-infrared spectroscopy (Vis/NIRS) system. A total of 120 seed samples were investigated using a field spectroradiometer. Chemometrics was used to build the relationship between the absorbance spectra and varieties. Principle compon...

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