We aim at splitting a given multiply connected polygon into a set of convex quadrilaterals. Our approach consists in repeatedly removing quadrilaterals from the given polygon. We will first derive theoretical results pertaining to quadrangulation of simple polygons from the usual 2-ear theorem. Unfortunately, that theorem holds only for simply connected polygons while we are interested in quadr...

Percutaneous dilatational tracheostomy is a common procedure in intensive care. This guideline from the Danish Society of Intensive Care Medicine (DSIT) and the Danish Society of Anesthesiology and Intensive Care Medicine (DASAIM) describes indications and contraindications, timing, complications compared to surgical tracheostomy, anaesthesia and technique, decannulation strategy, as well as tr...

Rewilding--the proposed restoration of ecosystems through the (re-)introduction of species--is seen by many as a way to stem the loss of biodiversity and the functions and services that biodiversity provides to humanity. In addition, rewilding might lead to increased public engagement and enthusiasm for biodiversity. But what exactly is rewilding, and is it based on sound ecological understandi...

Mountains are centres of global biodiversity, endemism and threatened species. Elevational gradients present opportunities for species currently living near their upper thermal limits to track cooler temperatures upslope in warming climates, but only if changes in precipitation are sufficiently in step with temperature. We model local population extirpation risk for a range of temperature and p...

In this paper, we present a technique that first align the page (Skew Correction) after that removing the pre-printed rule lines in handwritten Devanagari document images. This paper is first approach toward the rule line removal from Devanagari Script. In survey we found a lot of work has done on English, Greek, Arabic etc. language which has different script and style to write. We use common ...

One of the newer scales of suicide risk devised by Plutchik and colleagues was tested to see if it could discriminate between levels of suicide ideation and suicide attempts. A sample of 80 subjects were placed into various categories of suicide risk on the basis of a psychiatric examination. Results showed that the full scale did not adequately discriminate among groups. An explantation of the...

Surgical-site infection is a preventable adverse event. Implementation of good practices for correct surgical-site preparation can contribute to lessen this safety problem. The objective of this study was to describe the presence and quality of protocols on surgical-site preparation in the Murcia (Spain) regional network of public hospitals. The indicator "existence of protocol for surgical-sit...

objective : iud is a highly effective, safe, private, long-acting, and rapidly reversible method of contraception with few side effects. the aim of this study was to assess the continuation rate and cause of iud discontinuation in isfahan, iran. materials and methods: this historical cohort study wascarried out on 12 randomly selected health centers of isfahan province in 2007. 244 literate mar...

background:  the purpose of this study was to report the preoperative complaints and postoperative outcome of patients after removal of the radial head prosthesis.   methods:  this is a retrospective review of 14 adult patients (6 females and 8 males) from 2007 to 2011, who underwent radial head prosthesis removal by three surgeons. the average time between implantation and removal was 23 month...