Sökresultat

Filtyp

Din sökning på "*" gav 532100 sökträffar

Long-term recurrence and death rates after acute pancreatitis

The aim of this study was to compare long-term recurrence and death rates after a first episode of acute pancreatitis in patients with and without gallstones. Additionally, it was of interest to find out if there were factors predictive of readmission or death.

Urban preferences, amenities and age : Exploring the spatial distribution of age in Stockholm from 1991 to 2011

Cities exhibit a rich and complex heterogeneity in people and activities. This poses a sizable challenge for planners when planning new neighbourhoods or the reconstruction of old ones as well as when considering the allocation of supply of and demand for amenities, e.g. kindergartens or health facilities. However, individual preferences may also exhibit common denominators that may provide struct

Social capital in epidemiology

Inspired by Putnam’s study of Italy, this chapter develops applications that test the issue of social capital and health in the context of social epidemiology. Three central concepts are explained. The chapter attends to the technical issues, including, for example, the portion of children in subgroups identifying conflicts. The author then comes to his main message: the value of longitudinal expe

Spatio-temporal clustering and forecasting method for free-floating bike sharing systems

Free-floating bike sharing systems are an emerging new generation of bike rentals, that eliminates the need for specific stations and allows to leave a bicycle (almost) everywhere in the network. Although free-floating bikes allow much greater spontaneity and flexibility for the user, they need additional operational challenges especially in facing the bike relocation process. Then, we suggest a m

Quantifying the impacts of horizontal and vertical equity in transit route planning

Equity refers to a fair sharing of costs or resources. Horizontal equity concerns distribution among individuals or groups with the same necessities, whereas vertical equity should be considered in situations with different levels of needs. This paper deals with transit service, looking at how to make it equitable from a spatial and social point of view. Traditionally equity has been neglected in

Risk reduction: perioperative smoking intervention

Smoking is a well-known risk factor for perioperative complications. Smokers experience an increased incidence of respiratory complications during anaesthesia and an increased risk of postoperative cardiopulmonary complications, infections and impaired wound healing. Smokers have a greater risk of postoperative intensive care admission. Even passive smoking is associated with increased risk at ope

Effects of Intravenous Fluid Restriction on Postoperative Complications: Comparison of Two Perioperative Fluid Regimens: A Randomized Assessor-Blinded Multicenter Trial

Objective: To investigate the effect of a restricted intravenous fluid regimen versus a standard regimen on complications after colorectal resection.Summary Background Data: Current fluid administration in major surgery causes a weight increase of 3–6 kg. Complications after colorectal surgery are reported in up to 68% of patients. Associations between postoperative weight gain and poor survival a

Mobility and Entrepreneurship: Finding Value in Geographic Diversity

Contemporary entrepreneurial research has experienced the shift from examining various characteristics of (nascent) entrepreneurs to investigating career pathways that lead to entrepreneurship. The proposed paper develops the analytical framework which complements this career perspective on entrepreneurship with the economic geography perspective on spatial mobility as a knowledge accumulation mec

Paleomagnetism, magnetic anisotropy and U-Pb baddeleyite geochronology of the early Neoproterozoic Blekinge-Dalarna dolerite dykes, Sweden

Paleogeographic proximity of Baltica and Laurentia in the supercontinent Rodinia has been widely accepted. However, robust paleomagnetic poles are still scarce, hampering quantitative tests of proposed relative positions of the two cratons. A recent paleomagnetic study of the early Neoproterozoic Blekinge-Dalarna dolerite (BDD) dykes in Sweden provided a 946–935 Ma key pole for Baltica, but earlie

Low-molecular-weight heparin (Fragmin) versus heparin for anticoagulation during cardiopulmonary bypass in open heart surgery, using a pig model

Fragmin and heparin were studied in pigs during 120 min of cardiopulmonary bypass (CPB) and up to 240 min postoperatively, with respect to clotting, bleeding and the effects of protamine. Thirty-three pigs received bolus injections of 300 IU/kg with or without additional dosage during CPB and with or without subsequent protamine sulphate. Doses of Fragmin 60% higher were necessary to prevent clott

Transatrial-transpulmonary repair of atrioventricular septal defect with right ventricular outflow tract obstruction

Twenty patients had a repair of an atrioventricular septal defect with tetralogy of Fallot (n = 13) or double outlet right ventricle (n = 7). Mean age was 3.5 years. Surgical technique included transatrial-transpulmonary resection of right ventricular outflow tract obstruction and transatrial two patch repair of the atrioventricular septal defect. Ten patients required a transannular patch and one

Critical steps for computational inference of the 3′-end of novel alleles of immunoglobulin heavy chain variable genes - illustrated by an allele of IGHV3-7

Sequencing of immunoglobulin germline gene loci is a challenging process, e.g. due to their repetitiveness and complexity, hence limiting the insight in the germline gene repertoire of humans and other species. Through next generation sequencing technology, it is possible to generate immunoglobulin transcript data sets large enough to computationally infer the germline genes from which the transcr

Feature Detection and Description using a Harris-Hessian/FREAK Combination on an Embedded GPU

GPUs in embedded platforms are reaching performance levels comparable to desktop hardware, thus it becomes interesting to apply Computer Vision techniques. We propose, implement, and evaluate a novel feature detector and descriptor combination, i.e., we combine the Harris-Hessian detector with the FREAK binary descriptor. The implementation is done in OpenCL, and we evaluate the execution time and