Siemens AG, Healthcare Sector, Imaging, Particle Therapy, Hofmannstr. 26, 91052 Erlangen, Germany Ruprecht-Karls-Universität Heidelberg, Faculty of Physics and Astronomy, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany Heidelberg Ion Therapy Center and Department of Radiation Oncology, Im Neuenheimer Feld 450, 69120 Heidelberg, Germany Present address: Department of Radiation Oncology, Unive...

This paper proposes a novel system for the automatic detection of important anatomical structures such as the Optic Disc (OD), Blood Vessels and Macula in digital fundus retinal images. The novelty is in extraction of blood vessels and localization of macula. OD localization is done using Principle Component Analysis (PCA) followed by an active contour based approach for accurate segmentation o...

Challenges in eradicating BVD (bovine viral diarrhoea) include lack of farmer motivation, difficulties in encouraging compliance with biosecurity and testing protocols, and variations in opinions regarding responsibility to eradicate the disease (gunn and others 2005, Booth and Brownlie 2012). a coordinated approach, industry support, farmer cooperation, achievable targets and effective communi...

Bovine viral diarrhea (BVD) is one of the most important infectious diseases of cattle with respect to animal health and economic impact. Its stealthy nature, prolonged transient infections, and the presence of persistently infected (PI) animals as efficient reservoirs were responsible for its ubiquitous presence in cattle populations worldwide. Whereas it was initially thought that the infecti...

This paper investigates the conditions under which dominant airlines internalize self-imposed delays in a deterministic bottleneck model of airport pricing, complementing the similar analysis of Brueckner and Van Dender (BVD, 2008) for the standard congestion-pricing model. A unified model of bottleneck tolling includes untolled, uniform-, coarse-, multi-step-, and continuous-toll equilibria as...

ABSTRACT: This study aimed to establish the prevalence of animals persistently infected (PI) with bovine viral diarrhea virus (BVDV) in dairy farms at Parana State, Brazil. Samples were collected from 6,465 female Holstein Friesian Dairy Cattle, including less than two years old, females over old who had not given birth farm, and mothers calves diagnosed as infected. The cattle came 40 herds di...

UNLABELLED BACKGROUND In the frame of an eradication program for bovine viral diarrhea (BVD) in Swiss livestock, the question was raised whether free-ranging wildlife could threaten the success of this sanitary measure. Therefore, we conducted serological and virological investigations on BVD virus (BVDV) infections in the four indigenous wild ruminant species (roe deer, red deer, Alpine cha...