Search results for "circle"
showing 10 items of 122 documents
Angio-RM a confronto con angiografia digitale nella diagnosi degli aneurismi cerebrali.
2007
Poster congresso nazionale AINR. Bergamo, 20-23 Giugno 2007
Nutritional self-care in two older Norwegian males: a case study
2013
Solveig T Tomstad,1,2 Ulrika Söderhamn,2 Geir Arild Espnes,1,3 Olle Söderhamn21Department of Social Work and Health Science, Faculty of Social Sciences and Technology Management, Norwegian University of Science and Technology, Trondheim, 2Centre for Caring Research-Southern Norway, Faculty of Health and Sport Sciences, University of Agder, Grimstad, 3Research Centre for Health Promotion and Resources, Department of Social Work and Health Science, Faculty of Social Sciences and Technology Management, Norwegian University of Science and Technology, Trondheim, NorwayBackground: Knowledge about how to support nutritional self-care in the vulnerable elderly living in their own …
Extracranial internal carotid artery occlusion: the role of common carotid artery volume flow.
2002
BACKGROUND AND PURPOSE Quantitative measurement of blood flow volume in the common carotid artery (CCA) is now possible using the color velocity imaging quantification (CVI-Q) ultrasound technique. The aim of this study was to evaluate the cerebral hemodynamic effects of unilateral internal carotid artery (ICA) occlusion on CCA blood flow volumes (FVs) using CVI-Q. METHODS Records of ultrasound studies in our neurosonology laboratory were retrospectively reviewed to identify patients with unilateral ICA occlusions who at a minimum received both a routine color duplex carotid ultrasound examination and quantitative measurement of FV in the CCA, bilaterally, using the CVI-Q method. A total of…
Late-onset myasthenia gravis - CTLA4(low) genotype association and low-for-age thymic output of naïve T cells.
2014
Abstract Late-onset myasthenia gravis (LOMG) has become the largest MG subgroup, but the underlying pathogenetic mechanisms remain mysterious. Among the few etiological clues are the almost unique serologic parallels between LOMG and thymoma-associated MG (TAMG), notably autoantibodies against acetylcholine receptors, titin, ryanodine receptor, type I interferons or IL-12. This is why we checked LOMG patients for two further peculiar features of TAMG – its associations with the CTLA4 high/gain-of-function +49A/A genotype and with increased thymic export of naive T cells into the blood, possibly after defective negative selection in AIRE-deficient thymomas. We analyzed genomic DNA from 116 …
The virtuous cycle of stakeholder engagement in developing a sustainability culture: Salcheto winery
2020
Abstract Stakeholder engagement in sustainability represents a powerful driver for value creation. Drawing from stakeholder theory, this paper explores how a firm with a proactive sustainable behaviour engages stakeholders in developing innovation and creating value. A longitudinal, single case study of the Salcheto winery was carried out. Since the late 1990s, Salcheto has been at the forefront of wine eco-innovation and it has played a key role in the development of Montepulciano (Tuscany, Italy) as one of the first sustainable wine clusters worldwide. The development of a sustainable wine culture is one of the firm's various innovations. In doing so, the firm has had to face three challe…
A Generic Method of Line Matching for Central Imaging Systems under Short-Baseline Motion
2009
Line matching across images taken by a central imaging system (perspective or catadioptric) with focus on short baseline motion of the system is proposed. The relationship between images of lines on unitary sphere is studied and a simple algorithm for matching lines are proposed assuming the rotation of the system is known apriori or it can be estimated from some correspondences in two views. Two methods are discussed for retrieving R in the case it is not known apriori. Experimental results on both synthetic and real images are also presented.
Automatic Biological Cell Counting Using a Modified Gradient Hough Transform
2017
AbstractWe present a computational method for pseudo-circular object detection and quantitative characterization in digital images, using the gradient accumulation matrix as a basic tool. This Gradient Accumulation Transform (GAT) was first introduced in 1992 by Kierkegaard and recently used by Kaytanli & Valentine. In the present article, we modify the approach by using the phase coding studied by Cicconet, and by adding a “local contributor list” (LCL) as well as a “used contributor matrix” (UCM), which allow for accurate peak detection and exploitation. These changes help make the GAT algorithm a robust and precise method to automatically detect pseudo-circular objects in a microscop…
El Derecho internacional de las migraciones: entre la crisis y la renovación
2019
The international migration regime currently in force is manifestly insufficient for the regulation and governance of migration flows. The irreducible collision between the right of persons to leave their country and the right of States to reject the admission of migrants in its territory has led, in practice, to a vicious circle resulting in an increase in irregular migration and the multiplication of dramatic situations that hurt humanitarian feelings. In view of this situation, the United Nations promoted the adoption in January of 2019 of two instruments seeking to establish a new framework for international cooperation in this field: a Global Compact on Refugees and a Global Compact on…
The horospherical geometry of surfaces in hyperbolic 4-space
2006
We study some geometrical properties associated to the contacts of surfaces with hyperhorospheres inH + 4 (−1). We introduce the concepts of osculating hyperhorospheres, horobinormals, horoasymptotic directions and horospherical points and provide conditions ensuring their existence. We show that totally semiumbilical surfaces have orthogonal horoasymptotic directions.
First measurement of the polarization observable E and helicity-dependent cross sections in single π 0 photoproduction from quasi-free nucleons
2017
The double-polarization observable $E$ and the helicity-dependent cross sections $\sigma_{1/2}$ and $\sigma_{3/2}$ have been measured for the first time for single $\pi^{0}$ photoproduction from protons and neutrons bound in the deuteron at the electron accelerator facility MAMI in Mainz, Germany. The experiment used a circularly polarized photon beam and a longitudinally polarized deuterated butanol target. The reaction products, recoil nucleons and decay photons from the $\pi^0$ meson were detected with the Crystal Ball and TAPS electromagnetic calorimeters. Effects from nuclear Fermi motion were removed by a kinematic reconstruction of the $\pi^{0}N$ final state. A comparison to data mea…