Introduction. White matter hyperintensities (WMHs) are a common finding on MRI scans of older people and are associated with vascular disease. We compared 3 methods for automatically segmenting WMHs from MRI scans. Method. An operator manually segmented WMHs on MRI images from a 3T scanner. The scans were also segmented in a fully automated fashion by three different programmes. The voxel overl...

OBJECTIVES Co-prescribing of proton pump inhibitors (PPIs) with non-selective NSAIDs (nsNSAIDs) is recommended in patients at risk of gastrointestinal (GI) events. This study estimated usage of PPI co-therapy among chronic nsNSAID users and determined factors associated with concurrent nsNSAID-PPI use. METHODS The retrospective study was based on the Intercontinental Marketing Services (IMS) ...

In this work we study overlap degrees expressed in terms of overlap functions. We present the basic properties that from our point of view must satisfy these overlap functions. We study a construction method, we analyze which t-norms are also overlap functions and we prove that if we apply particular aggregations to such functions we recover the overlap index between fuzzy sets as defined by Du...

In 1960, Reid described a method of quantitating the bronchial mucous gland hypertrophy that occurs in chronic bronchitis. She expressed the bronchial mucous gland size as a ratio of the bronchial mucous gland thickness to the thickness of the bronchial wall, as measured from the epithelial basement membrane to the inner perichondrium. This ratio was increased in chronic bronchitis, and there w...

PURPOSE Cyberbullying appears to be on the rise among adolescents due in part to increased access to electronic devices and less online supervision. Less is known about how cyberbullying differs from traditional bullying which occurs in person and the extent to which these two forms overlap. Our first aim was to examine the overlap of traditional bullying (relational, verbal, and physical) with...

hyperspectral sensors provide a large number of spectral bands. this massive and complex data structure of hyperspectral images presents a challenge to traditional data processing techniques. therefore, reducing the dimensionality of hyperspectral images without losing important information is a very important issue for the remote sensing community. we propose to use overlap-based feature weigh...

BACKGROUND Ratios of age-adjusted rates between a set of geographic units and the overall area are of interest to the general public and to policy stakeholders. These ratios are correlated due to two reasons-the first being that each region is a component of the overall area and hence there is an overlap between them; and the second is that there is spatial autocorrelation between the regions. ...

In this paper, we study the problem of computing the similarity of two protein structures by measuring their contact-map overlap. Contact-map overlap abstracts the problem of computing the similarity of two polygonal chains as a graph-theoretic problem. In R3, we present the first polynomial time algorithm with any guarantee on the approximation ratio for the 3-dimensional problem. More precise...

purpose: the purpose of this study was to investigate the structure of the discipline categorization and its overlap with isi subject categories. this will help detect the systematic errors arising from the scientometrics studies. methodology: the scientometrics methodology was used. all articles which were indexed in the web of science database (2007) and also the articles citing them during 2...