Results 81 to 90 of about 8,221 (217)

Solar Energy in 2025: Global Deployment, Cost Trends, and the Role of Energy Storage in Enabling a Resilient Smart Energy Infrastructure

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This paper explores global solar PV deployment, cost trends, and grid integration challenges in 2025. It examines the role of energy storage in firming solar output and supporting electric vehicle (EV) growth, alongside policy shifts, investment flows, and technological innovations.
Ehsan Rezaee, S. Ravi P. Silva
wiley   +1 more source

Low‐temperature soft electrochemical actuator based on hierarchically structured polypyrrole membranes for subzero operation

open access: yesFlexMat, EarlyView.
A soft electrochemical actuator using a hierarchically structured polypyrrole membrane with coral‐like hollow vesicles achieves stable performance at −24°C. The unique architecture ensures continuous conductivity and rapid ion diffusion, resulting in large strain, low energy consumption, and high coulombic efficiency under subzero conditions. This work
Lizhen Lan   +6 more
wiley   +1 more source

CATEDRAL DE AGUA, SANTIAGO, CHILE

open access: yesARQ, 2012
La determinación de un parámetro generó las variaciones en los elementos que configuran esta cubierta y las resultantes condiciones espaciales bajo ella.
Jorge Godoy, Lene Nettelbeck
doaj  

Machine Learning Approaches to Forecast the Realized Volatility of Crude Oil Prices

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT This paper presents an evaluation of the accuracy of machine learning (ML) techniques in forecasting the realized volatility of West Texas Intermediate (WTI) crude oil prices. We compare several ML algorithms, including regularization, regression trees, random forests, and neural networks, to several heterogeneous autoregressive (HAR) models ...
Talha Omer   +3 more
wiley   +1 more source

Impact of Using an Exchange Model (EM) to Support the Early Assessment Process of Industrialized Timber Projects

open access: yesBuildings
Standardized information on the processes and requirements for information exchanges is critical to ensure accurate cost estimations. However, traditional methods based on 2D information lack the standardization and information required for efficient and
Claudia Rojas   +5 more
doaj   +1 more source

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

open access: yesJournal 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

Dos travesías en los Andes

open access: yesARQ, 2009
Las travesías en Sudamérica buscan el reconocimiento de un territorio y la definición de una manera particular de abordarlo. En el mar interior americano, entre el altiplano y los valles centrales, dos intervenciones temporales proponen refugios en acero
Boris Ivelic, Juan Baixas
doaj  

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

open access: yesJournal 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   +4 more
wiley   +1 more source

Refugio Los Canteros: Farellones, Chile

open access: yesARQ, 2009
Una vivienda multifamiliar para la temporada de esquí, en la localidad de Farellones, se plantea como un volumen único y vertical que es a la vez refugio y mirador del ambiente cordillerano.
Max Núñez, Nicolás del Río
doaj  

New House, New Furniture, New Room: Children’s Pandemic Landscapes of Care in Chile

open access: yesUrban Planning
Standing at the intersection between geographies of care and children’s geographies, we present three ethnographic stories (emerging from three ethnographic studies) through which we argue that, as a result of pandemic confinement in Chile, children’s ...
Susana Cortés-Morales   +3 more
doaj   +1 more source

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