47 research outputs found
A Benchmark and Evaluation of Non-Rigid Structure from Motion
Non-Rigid structure from motion (NRSfM), is a long standing and central
problem in computer vision, allowing us to obtain 3D information from multiple
images when the scene is dynamic. A main issue regarding the further
development of this important computer vision topic, is the lack of high
quality data sets. We here address this issue by presenting of data set
compiled for this purpose, which is made publicly available, and considerably
larger than previous state of the art. To validate the applicability of this
data set, and provide and investigation into the state of the art of NRSfM,
including potential directions forward, we here present a benchmark and a
scrupulous evaluation using this data set. This benchmark evaluates 16
different methods with available code, which we argue reasonably spans the
state of the art in NRSfM. We also hope, that the presented and public data set
and evaluation, will provide benchmark tools for further development in this
field
Danish study of Non-Invasive testing in Coronary Artery Disease (Dan-NICAD):study protocol for a randomised controlled trial
BACKGROUND: Coronary computed tomography angiography (CCTA) is an established method for ruling out coronary artery disease (CAD). Most patients referred for CCTA do not have CAD and only approximately 20–30 % of patients are subsequently referred to further testing by invasive coronary angiography (ICA) or non-invasive perfusion evaluation due to suspected obstructive CAD. In cases with severe calcifications, a discrepancy between CCTA and ICA often occurs, leading to the well-described, low-diagnostic specificity of CCTA. As ICA is cost consuming and involves a risk of complications, an optimized algorithm would be valuable and could decrease the number of ICAs that do not lead to revascularization. The primary objective of the Dan-NICAD study is to determine the diagnostic accuracy of cardiac magnetic resonance imaging (CMRI) and myocardial perfusion scintigraphy (MPS) as secondary tests after a primary CCTA where CAD could not be ruled out. The secondary objective includes an evaluation of the diagnostic precision of an acoustic technology that analyses the sound of coronary blood flow. It may potentially provide better stratification prior to CCTA than clinical risk stratification scores alone. METHODS/DESIGN: Dan-NICAD is a multi-centre, randomised, cross-sectional trial, which will include approximately 2,000 patients without known CAD, who were referred to CCTA due to a history of symptoms suggestive of CAD and a low-risk to intermediate-risk profile, as evaluated by a cardiologist. Patient interview, sound recordings, and blood samples are obtained in connection with the CCTA. All patients with suspected obstructive CAD by CCTA are randomised to either stress CMRI or stress MPS, followed by ICA with fractional flow reserve (FFR) measurements. Obstructive CAD is defined as an FFR below 0.80 or as high-grade stenosis (>90 % diameter stenosis) by visual assessment. Diagnostic performance is evaluated as sensitivity, specificity, predictive values, likelihood ratios, and C statistics. Enrolment commenced in September 2014 and is expected to be complete in May 2016. DISCUSSION: Dan-NICAD is designed to assess whether a secondary perfusion examination after CCTA could safely reduce the number of ICAs where revascularization is not required. The results are expected to add knowledge about the optimal algorithm for diagnosing CAD. TRIAL REGISTRATION: Clinicaltrials.gov identifier, NCT02264717. Registered on 26 September 2014. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s13063-016-1388-z) contains supplementary material, which is available to authorized users
The Coastal Observing System for Northern and Arctic Seas (COSYNA)
The Coastal Observing System for Northern and Arctic Seas (COSYNA) was established in order to better understand the complex interdisciplinary processes of northern seas and the Arctic coasts in a changing environment. Particular focus is given to the German Bight in the North Sea as a prime example of a heavily used coastal area, and Svalbard as an example of an Arctic coast that is under strong pressure
due to global change. The COSYNA automated observing and modelling system is designed to monitor real-time conditions and provide short-term forecasts, data, and data products to help assess the impact of anthropogenically induced change. Observations are carried out by combining satellite and radar remote sensing with various in situ platforms. Novel sensors, instruments, and algorithms are developed to further improve the understanding of the interdisciplinary interactions between physics, biogeochemistry, and the ecology of coastal seas. New modelling and data assimilation techniques are used to integrate observations and models in a quasi-operational system providing descriptions and forecasts of key hydrographic variables. Data and data products are publicly available free of charge and in real time. They are used by multiple interest
groups in science, agencies, politics, industry, and the public
Austria and Central Europe
At least since the sixteenth century the position of Austria on the geopolitical map of Europe has always been a consequence of its position and self-definition as either a German or a Central European power. But until the rise of ethnic political legitimization in the nineteenth century, the Habsburg Empire with its growing territorial reach in eastern and southeastern Europe had little need to make decisions between a leading political role in the German-speaking area and its growing role a..
Austrian Cultural and Public Diplomacy After the End of the Cold War
Since the beginning of the Second Austrian Republic, cultural and public diplomacy played a central part in positioning Austria in an international context and in rebuilding reputation after the Second World War. The conscious decision to communicate internationally Austrian culture and heritage (including natural landscape) became a part of national identity building and complemented Austria’s status of neutrality after 1955. This priority agenda was upheld throughout the time of the Cold Wa..