Results 51 to 60 of about 1,490 (136)
International Journal of Mechanical System Dynamics, Volume 6, Issue 2, Page 224-246, June 2026.ABSTRACT This work addresses the challenge of bidirectional trajectory tracking in solar‐powered wheeled mobile robots (WMRs), considering the mechanical structure, actuator‐driver, and power stage subsystems. Notably, this is the first study to explicitly model and control the actuator‐driver subsystem within this context. The proposed solution relies
Benjamin Natanael Santiago‐Nogales +8 more
wiley +1 more source
Dialectical Geopolitics in the Multipolar Energy Era
World Affairs, Volume 189, Issue 3, Fall 2026.ABSTRACT This paper develops a dialectical geopolitics–geoeconomics framework for interpreting the restructuring of globalization and the emergence of a multipolar energy era. It operationalizes nine dialectical prerequisites as a diagnostic “protocol” for international relations/international political economy (IR/IPE): specify endogenous ...
Dimos Chatzinikolaou
wiley +1 more source
International Journal of Sustainable EngineeringFuel cell hybrid electric vehicles employ fuel cells along with batteries or ultracapacitors as power sources, and energy management systems can control their power split.
Santiago García +5 more
doaj +1 more source
Ocean Wave Modulation of Offshore Wind Turbine Loads and Wake
Wind Energy, Volume 29, Issue 6, June 2026.ABSTRACT This study examines how wave‐induced modulation affects the operational performance and structural dynamics of fixed‐bottom offshore wind turbines operating under a neutral atmospheric boundary layer profile. To capture these effects accurately while maintaining computational efficiency, unsteady RANS modelling techniques are employed.
Guillén Campaña‐Alonso +2 more
wiley +1 more source
Results in EngineeringThe conducted research aimed to identify the presence of environmental contamination by heavy metals in sediments in the Majes - Camaná basin in the Arequipa-Peru, using indicators such as the Geo-accumulation Index (Igeo) and the Pollution Load Index ...
María Claudia Cáceres Obada +7 more
doaj +1 more source
Optimization of Bioethanol Production from Coffee Mucilage
BioResources, 2015 A response surface methodology with 2k full factorial design was applied to obtain optimum conditions for bioethanol production using coffee mucilage (CM) as the substrate and Saccharomyces cerevisiae NRRL Y-2034 as the inoculum. CM is an agro-industrial
Antonio De León-Rodríguez +3 more
doaj +1 more source
Wind Energy, Volume 29, Issue 6, June 2026.ABSTRACT Validating engineering wake models under real‐world operational conditions is essential for improving wind farm performance predictions. This study utilises a unique dataset from the Lillgrund offshore wind farm, collected during the Horizon 2020 TotalControl project campaign, integrating synchronous Supervisory Control and Data Acquisition ...
Diego Siguenza‐Alvarado +6 more
wiley +1 more source
Accounting &Finance, Volume 66, Issue 2, Page 1571-1593, June 2026.ABSTRACT This study examines how board expertise diversity influences firm performance using a novel machine learning approach to classify directors' professional backgrounds. Drawing on data from Spanish listed firms, we develop multidimensional expertise profiles that capture multiple skills held by each director.
Fernando Hernández‐Atienza +4 more
wiley +1 more source
Solar production of WO3: a green approach
Green Processing and Synthesis, 2015 The tungsten trioxide (WO3) is a promising material with important technologic and scientific applications, due to its electrochromic, gasochromic and photochromic properties.
Villafán Vidales Heidi Isabel +4 more
doaj +1 more source
Sociedad y Ambiente, 2015 Este documento describe brevemente los desafíos que enfrenta la reforma energética ante la caída de los precios de petróleo; esta situación desfavorable puede convertirse en una oportunidad para impulsar la implementación de proyectos de energías ...
Gabriela Muñoz Meléndez
doaj +1 more source