Results 31 to 40 of about 48,844 (123)

Heterogeneous‐Scale Multi‐Graph Convolutional Network Based on Kernel Density Estimation for Traffic Prediction

IET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.
Heterogeneous‐scale multi‐graph convolution networks based on kernel density estimation is proposed, which integrates two core components: the frequency feature layer and the heterogeneous‐scale spatiotemporal layers. The frequency feature layer employs a mapping network to learn and equalize traffic flow distributions, mitigating the effects of ...
Mengyun Xu, Zhichao Wu, Sibin Cai, Yuqing Shi, Jie Fang   +4 more
wiley   +1 more source

Who moves first? Resource price interdependence through time‐varying Granger causality

Natural Resource Modeling, Volume 37, Issue 3, August 2024.
Abstract This paper investigates the interdependence among natural resource prices. Commodities belonging to three different groups (energy commodities, metals, agricultural commodities) are considered. The analysis is performed via a battery of time‐varying Granger causality tests.
Roberto Esposti
wiley   +1 more source

Machine Learning and AI Approaches for Analyzing Diabetic and Hypertensive Retinopathy in Ocular Images: A Literature Review

IEEE Access
The field of healthcare holds significant global importance due to its profound impacts on both individual well-being and the broader healthcare system.
Miguel Alberto Urina-Triana, Marlon Alberto Pineres-Melo, Mirary Mantilla-Morron, Shariq Butt-Aziz, Luisa Galeano-Munoz, Sumera Naz, Paola Patricia Ariza-Colpas   +6 more
doaj   +1 more source

The role of tourism in driving economic growth: An asymmetric augmented autoregressive distributed lag analysis of Singapore's experience

International Journal of Tourism Research, Volume 26, Issue 4, July/August 2024.
Abstract Tourism has long been recognized as a potential force for economic growth in various parts of the globe. This study revisits this causal relationship to demonstrate the consequences of long‐run and short‐run effects between tourism development and economic growth in the context of Singapore for the period 1983:1 to 2020:4.
Mohammad Sharif Karimi, Huseyin Karamelikli, Babak Naysary   +2 more
wiley   +1 more source

Structural and Raman Vibrational Studies of CeO2-Bi2O3 Oxide System

Advances in Materials Science and Engineering, 2009
A series of ceramics samples belonging to the CeO2-Bi2O3 phase system have been prepared via a coprecipitation route. The crystallized phases were obtained by heating the solid precursors at 600∘C for 6 hours, then quenching the samples.
L. Bourja, B. Bakiz, A. Benlhachemi, M. Ezahri, J. C. Valmalette, S. Villain, J. R. Gavarri   +6 more
doaj   +1 more source

Estudios cromosómicos en Lycium (Solanaceae) de Norteamérica

Botan‪ical Sciences, 1982
Se presenta la información de los estudios cromosómicos reportados sobre especies de Lycium en todo el mundo. Usando la técnica del "squash" se efectuaron recuentos cromosómicos a partir de células madres del polen en taxa de Lycium norteamericanos y ...
Fernando Chiang
doaj   +1 more source

Effectiveness of pericapsular nerve group block for hip fracture pain management in the emergency department: results of the ED-PENG-B randomised controlled trial

BMC Emergency Medicine
Background Hip fractures (HFs) managed in the emergency department (ED) are associated with severe pain. Locoregional anaesthesia (LRA) using the pericapsular nerve group (PENG) block may be an effective option for pain management in the ED, helping to ...
Patrick Calati, Camille Lenoir, Larbi Chaht Kamel, Nicolas Contie, Jean-Denis Firoloni, Adele Sichez, Annas Sebai, Jonathan Chelly, Laurent Caumon   +8 more
doaj   +1 more source

Anatomía de la madera de algunas especies del género Mimosa (Leguminosae)

Botan‪ical Sciences, 1990
Se describen las características macroscópicas y microscópicas del xilema secundario de especies arbóreas de la serie Xantiae del género Mimosa: M. lactiflua con 3 variedades: var. lactiflua, var. psilocarpa y var. goldmanii, M.
Teresa Chehaibar, Rosaura Grether
doaj   +1 more source

Anti-Bacterial Adhesion Activity of Tropical Microalgae Extracts

Molecules, 2018
The evolution of regulations concerning biocidal products aimed towards an increased protection of the environment (e.g., EU Regulation No 528/2012) requires the development of new non-toxic anti-fouling (AF) systems.
Claudia Zea-Obando, Alina Tunin-Ley, Jean Turquet, Gérald Culioli, Jean-François Briand, Alexis Bazire, Karine Réhel, Fabienne Faÿ, Isabelle Linossier   +8 more
doaj   +1 more source

El VaR para la gestión del riesgo del portafolio de inversiones

Quipukamayoc, 2019
Objetivo: Analizar cómo la rentabilidad diaria, la varianza de cada uno de los componentes de una cartera de inversiones y la correlación entre los activos de la cartera tienen incidencia en el VaR del portafolio de inversiones.
Pedro Pablo Chambi Condori
doaj   +1 more source