Results 131 to 140 of about 236,510 (307)

A Deep Learning Framework for Forecasting Medium‐Term Covariance in Multiasset Portfolios

Journal of Forecasting, EarlyView.
ABSTRACT Forecasting the covariance matrix of asset returns is central to portfolio construction, risk management, and asset pricing. However, most existing models struggle at medium‐term horizons, several weeks to months, where shifting market regimes and slower dynamics prevail.
Pedro Reis, Ana Paula Serra, João Gama
wiley   +1 more source

Presence of Free-living Acanthamoeba in Loa and Salado Rivers, Atacama Desert, Northern Chile. [PDF]

Microorganisms, 2022
Salazar-Ardiles C, Pérez-Arancibia A, Asserella-Rebollo L, Gómez-Silva B.   +3 more
europepmc   +1 more source

Exploring the Nexus Between Sustainability Index and Central European Stock Markets Competitiveness: Evidence Through Time–Frequency Analysis and SHAP

Journal of Forecasting, EarlyView.
ABSTRACT Sustainability has become an important factor shaping financial markets and investor behavior. This paper examines the relationship between sustainability indices and Central European stock markets using a time–frequency approach. Wavelet coherence is employed to capture time‐varying co‐movements between sustainability indices and stock market
Zuzana Janková, Dipak Kumar Jana, Michal Páleš, Elena Fleaca, Petr Dostál   +4 more
wiley   +1 more source

Remote Sensing and Ecological Variables Related to Influenza A Prevalence and Subtype Diversity in Wild Birds in the Lluta Wetland of Northern Chile. [PDF]

Viruses, 2023
Ruiz S, Galdames P, Baumberger C, Gonzalez MA, Rojas C, Oyarzun C, Orozco K, Mattar C, Freiden P, Sharp B, Schultz-Cherry S, Hamilton-West C, Jimenez-Bluhm P.   +12 more
europepmc   +1 more source

Aloe vera in Food Preservation: Harnessing Bioactive Constituents for Clean‐Label Innovation and Safety Assurance

Food Safety and Health, EarlyView.
Aloe vera‐derived biopolymers and nanoformulations enhance antimicrobial, antioxidant, and barrier functions in clean‐label edible coatings and films, whereas safety‐critical anthraquinone thresholds and regulatory constraints shape their translational potential.
Acharya Balkrishna, Hemant Sharma, Sonam Verma, Amar Jeet, Sumit Kumar Singh, Sharad Kumar Tripathi, Vedpriya Arya   +6 more
wiley   +1 more source

Genetic Diversity, Morphometric Characterization, and Conservation Reassessment of the Critically Endangered Freshwater Snail, Heleobia atacamensis, in the Atacama Saltpan, Northern Chile. [PDF]

Biology (Basel), 2023
Collado GA, Torres-Díaz C, Vidal MA, Valladares MA.   +3 more
europepmc   +1 more source

Marine Macroalgae as a Safe Healthy Food While Meeting Food Security Challenges Arising From Climate Changes

Food Safety and Health, EarlyView.
Planned harvesting and processing of marine macroalgae could meet future global food needs and mitigate fuel‐originated carbon dioxide responsible for climate change. Microalgal foods are nutritious and safe. The utilization of macroalgae would avoid environmental problems arising from the release of overgrowing macroalgae caused by heatwaves, which ...
Upali Samarajeewa
wiley   +1 more source

NOTA SOBRE LA PRESENCIA DE HELIOTROPIUM KRAUSEANUM FEDDE (HELIOTROPIACEAE) EN CHILE NOTE ON THE PRESENCE OF HELIOTROPIUM KRAUSEANUM FEDDE (HELIOTROPIACEAE) IN CHILE

Gayana: Botanica, 2004
The presence of Heliotropium krauseanum Fedde is reported near Iquique in northern Chile (19°37'S, 70°11'O). The species had been previously collected only in Perú. This report represents an important southward geographic range extension for the species,
Federico Luebert, Raquel Pinto
doaj  

Drainage Network Morphology Influences Population Structure and Gene Flow of the Andean Water Frog Telmatobius pefauri (Anura: Telmatobiidae) of the Atacama Desert, Northern Chile. [PDF]

Zool Stud, 2023
Fibla P, Sáez PA, Cruz-Jofré F, Méndez MA.   +3 more
europepmc   +1 more source

A repeating earthquake catalog for Northern Chile

Seismica
Repeating earthquakes are nearly identical seismic events that are assumed to occur reiteratively on the same fault-patch with highly consistent focal mechanisms. Their magnitude-dependent recurrence intervals can be used to estimate local fault-slip and to infer spatial and temporal patterns of aseismically creeping zones at depth.
Jonas Folesky, Jörn Kummerow, Laurens Jan Hofman   +2 more
openaire   +1 more source