Results 51 to 60 of about 40,823 (186)

Classifying representations by way of Grassmannians [PDF]

, 2014
Let $\Lambda$ be a finite dimensional algebra over an algebraically closed field. Criteria are given which characterize existence of a fine or coarse moduli space classifying, up to isomorphism, the representations of $\Lambda$ with fixed dimension $d ...
Huisgen-Zimmermann, Birge
core   +1 more source

Instrumental variables estimation of large demand systems with an application to fruit and vegetable demand and price index

Journal of the Agricultural and Applied Economics Association, EarlyView.
Abstract This paper derives the asymptotic properties of an iterated three‐stage least squares (I3SLS) estimator and applies it to estimate a Quadratic Almost Ideal Demand (QUAID) system for 47 fruits and vegetables with endogenous prices. We calculate an exact price index from the estimates and compare it with several commonly used price indexes.
Shaonan Wang, Chen Zhen, Peyton Ferrier
wiley   +1 more source

Optimization of bioactive compounds extraction from Rosa canina L. pseudofruit through the action of two hydrolytic enzyme preparations

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKROUND The pseudo‐fruit of Rosa canina L. is a rich source of bioactive compounds with antioxidant, anti‐inflammatory, anti‐cancer, anti‐diabetic, anti‐aging, and antimicrobial activities. The aim of the present study is the optimization of a green process based on the action of two hydrolytic enzyme preparations, namely Pectinex® Ultra ...
Zafeiria Lemoni, Styliani Kalantzi, Theopisti Lymperopoulou, Andromachi Tzani, Georgios Stavropoulos, Anastasia Detsi, Diomi Mamma   +6 more
wiley   +1 more source

Global topological classification of Lotka-Volterra quadratic differential systems

Electronic Journal of Differential Equations, 2012
The Lotka-Volterra planar quadratic differential systems have numerous applications but the global study of this class proved to be a challenge difficult to handle.
Dana Schlomiuk, Nicolae Vulpe
doaj  

From shape to source: sedimentary charcoal morphology as a proxy for tropical burned biomass composition

Journal of Quaternary Science, EarlyView.
ABSTRACT Sedimentary charcoal elongation is increasingly being used in paleoecology to distinguish herbaceous from woody fuel in past fires. However, the relationship between charcoal morphotypes and plant types has never been formally tested in tropical environments, despite its potential to improve understanding of fire regimes and deforestation, and
Fiona Cornet, Vincent Montade, Stéphanie C. Bodin, Justine Descloitre, Maxime Réjou‐Méchain, Gaëlle Viennois, Julie C. Aleman, Chimène Assi‐Kaudjhis, William F. Kenney, Richard Oslisly, Monique G. Tossou, Laurent Bremond, Charly Favier   +12 more
wiley   +1 more source

What Makes People so Prone to Share Celebrity Gossip? A Combination of Less Guilt and More Excitement

Psychology &Marketing, EarlyView.
ABSTRACT Taking a relational approach, this research investigates why people are so prone to gossip about their favorite celebrities relative to other targets. We focus on the emotional dynamics that characterize the choice of whether to gossip and compare parasocial relationships—one‐sided bonds in which celebrities influence consumers, but not vice ...
Gaia Giambastiani, Joseph C. Nunes, Andrea Ordanini   +2 more
wiley   +1 more source

Mean‐Variance Payoff Applied to Stackelberg Games

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We analyse a Stackelberg duopoly in which the leader faces uncertainty about the intercept demand, while the follower observes the realised demand and decides whether to enter the market after the uncertainty is resolved. The leader evaluates the uncertainty by maximising a mean‐variance utility function that captures its risk aversion.
João M. Silva, Margarida A. Brito, Alberto A. Pinto, Alberto A. Álvarez‐López   +3 more
wiley   +1 more source

Geometric configurations of singularities for quadratic differential systems with total finite multiplicity $m_f=2$

Electronic Journal of Differential Equations, 2014
In this work we consider the problem of classifying all configurations of singularities, both finite and infinite of quadratic differential systems, with respect to the geometric equivalence relation defined in [3].
Joan C. Artes, Jaume Llibre, Dana Schlomiuk, Nicolae Vulpe   +3 more
doaj  

Automated Coregistered Segmentation for Volumetric Analysis of Multiparametric Renal MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This study aims to develop and evaluate a fully automated deep learning‐driven postprocessing pipeline for multiparametric renal MRI, enabling accurate kidney alignment, segmentation, and quantitative feature extraction within a single efficient workflow. Methods Our method has three main stages.
Aya Ghoul, Cecilia Liang, Isabelle Loster, Lavanya Umapathy, Bernd Kühn, Petros Martirosian, Ferdinand Seith, Sergios Gatidis, Thomas Küstner   +8 more
wiley   +1 more source

Solving for Blameless and Optimal Control Under Prioritized Safety Constraints

Optimal Control Applications and Methods, EarlyView.
Summary of the proposed method for solving for blameless and optimal control sequences. ABSTRACT In many safety‐critical optimal control problems, users may request multiple safety constraints that are jointly infeasible due to external factors such as subsystem failures, unexpected disturbances, or fuel limitations.
Natalia Pavlasek, Behçet Açıkmeşe, Meeko Oishi, Claus Danielson   +3 more
wiley   +1 more source