نتایج جستجو برای: nonparametric statistics
تعداد نتایج: 194101 فیلتر نتایج به سال:
In this paper, we present a novel method to generate a panoramic background image from a sequence of moving camera images. Our method is based on nonparametric statistics and robust model estimation using meanshift. Each frame is projected to panoramic space by homography matrix which is calculated by SURF(Speeded Up Robust Features) matching. To generate reliable panoramic background image, we...
OBJECTIVE This study investigated attendees' motivation and motives for participation in day centres and their satisfaction with the rehabilitation, while also addressing the influence of day centre orientation (work- or meeting-place orientation), gender and age. METHODS Ninety-three Swedish day centre attendees participated in a cross-sectional study and completed questionnaires about motiv...
BACKGROUND This article aims to demonstrate computational synthesis of Web-based experiments in undertaking experimentation on relationships among the participants' design preference, rationale, and cognitive test performance. The exemplified experiments were computationally synthesised, including the websites as materials, experiment protocols as methods, and cognitive tests as protocol module...
The American Psychological Association (APA) Task Force on Statistical Inference was formed in 1996 in response to a growing body of research demonstrating methodological issues that threatened the credibility of psychological research, and made recommendations to address them. One issue was the small, even dramatically inadequate, size of samples used in studies published by leading journals. ...
Previous studies of occlusal force have provided conflicting results. The purpose of these studies was to determine whether the extent of vertical opening, contralateral occlusal support, or head posture influenced vertical occlusal forces during swallowing, simulated chewing, and maximum biting effort. Three samples of subjects with normal vertical facial proportions--one each of children, ado...
Injury-associated deaths have substantial economic consequences. In 2013, unintentional injury was the fourth leading cause of death, suicide was the tenth, and homicide was the sixteenth; these three causes accounted for approximately 187,000 deaths in the United States. To assess the economic impact of fatal injuries, CDC analyzed death data from the National Vital Statistics System for 2013,...
OBJECTIVES To examine the use of the multi-rater Kappa measure of agreement (Nonparametric Statistics for the Behavioural Sciences, McGraw Hill, New York, 1988) in team based, mixed method, qualitative nursing research. DESIGN The article presents an illustrative description of the application of the qualitative coding procedure and associated multi-rater Kappa measurement at four time points...
We assess the extent to which differences in socio-economic status are associated with racial and ethnic gaps in a fundamental measure of population health: the rate at which infants die. Using micro-level Vital Statistics data from 2000 to 2004, we examine mortality gaps of infants born to white, black, Mexican, Puerto Rican, Asian, and Native American mothers. We find that between-group morta...
OBJECTIVE This study explored the care-giving and care-seeking behaviours of parents who took their children to the emergency department (ED) of a large urban hospital in Western Canada for non-urgent care. METHOD Data were collected from a convenience sample of 114 parents during a two-week period in January 1992, using a self-administered 53-item questionnaire. The data were analyzed using ...
We propose efficient nonparametric statistics to compare medical imaging modalities in multi-reader multi-test data and to compare markers in longitudinal ROC data. The proposed methods are based on the weighted area under the ROC curve, which includes the area under the curve and the partial area under the curve as special cases. The methods maximize the local power for detecting the differenc...
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