In this paper we present the Umbrella protocol, a novel distributed hash table architecture that supports key publishing and retrieval on top of an overlay network for content distribution. The Umbrella protocol provides a scalable environment with efficient algorithms based on a distributed routing table of constant size for each node, thus minimizing traffic load and scalability problems. Thr...

BACKGROUND Obesity and dental caries are global public health problems which can impact in childhood and throughout the life course. In simple terms, childhood dental caries and body weight are linked via the common risk factor of diet. An association between dental caries and obesity has been described in a number of studies and reviews. However, similarly, a relationship has also been noted b...

Forty patients were catheterized for closure of atrial septal defects with the Rashkind patent ductus arteriosus umbrella device, a modified Rashkind umbrella device, and the newly designed Lock Clamshell Occluder. Patients weighed 8 kg or more (a requirement for transvenous access with the 11F delivery sheath) and had defects suitable for closure based on two-dimensional echocardiography. The ...

Abstract—This contribution deals with the blocking probability in a hierarchical network with two mobility behaviors. A continuous coverage is achieved with micro-cells that accommodate both fresh calls and handover requests. Over this micro-cell coverage umbrella-cells, which only accept handover, are implemented. At every handover, the sojourn time of the terminal in the cell is measured. If ...

he studies on membrane dynamics in urinary bladder umbrella cells were focused on proteins as important factors for maintaining the permeability barrier and their role as pathways modulators for the discoidal/fusiform endocytic vesicles which is one of the main features of the umbrella cells. However, our workgroup has dedicated to the study of lipid membrane composition and its biological impa...

Background and Objective: This umbrella review presents comprehensive data on the evidence of the association between cerebral venous thrombosis (CVT) and COVID-19 vaccinations. Methods: We searched related databases to access issue-related systematic reviews both with meta‐analyses or without it that studied the connotation between COVID 19 vaccination and CVT in any languages from initiatio...