Results 181 to 190 of about 367,454 (315)

A reconfigurable dielectric elastomer actuator via phase-transitional ferrofluid enables sustainable operation. [PDF]

open access: yesSci Adv
Lee YH   +11 more
europepmc   +1 more source

Performance evaluation using bootstrapping DEA techniques: Evidence from industry ratio analysis

open access: yes
In Data Envelopment Analysis (DEA) context financial data/ ratios have been used in order to produce a unified measure of performance metric. However, several scholars have indicated that the inclusion of financial ratios create biased efficiency ...
Halkos, George, Tzeremes, Nickolaos
core  

Water Losses and Environmental Efficiency in Urban Water Supply Systems: A Comparative Assessment for Spain and Portugal

open access: yesSustainable Development, EarlyView.
ABSTRACT Water losses are a critical environmental and operational challenge, especially in regions exposed to increasing water stress. This study assesses the environmental productivity of municipal water supply services in Spain and Portugal during the period 2014–2022, explicitly treating losses as an undesirable output.
Elisabet Zafra Gómez   +4 more
wiley   +1 more source

Network Latency Estimation for Telesurgery Using Deep Reinforcement Learning

open access: yesSmartBot, EarlyView.
Overview of the proposed two‐stage deep reinforcement learning framework for network latency prediction in telesurgery. The pipeline includes data collection from simulated catheter navigation sessions (Philippines–Botswana), feature engineering, DQN‐based direction prediction (85.8% accuracy), direction‐to‐value transformation, and value forecasting ...
Bakang Kgopolo   +2 more
wiley   +1 more source

Monolithic Opto‐Acoustic Synesthetic Transduction of Color and Sound in a Single Chiral Liquid Crystal Elastomer

open access: yesSmall, EarlyView.
Monolithic cholesteric liquid crystal elastomers simultaneously generate color and sound under electrically programmed stimuli. Low‐frequency electric fields modulate the helical pitch to produce tunable structural colors, while high‐frequency excitation induces membrane vibration for acoustic emission.
Ji Yoon Park   +6 more
wiley   +1 more source

Fluorinated copolymer resists for high‐resolution negative‐tone lithography: Preparation and patterning performance

open access: yesSmart Molecules, EarlyView.
Electron‐beam induced C–F cleavage in –CF3 generates F−, which abstracts a proton to form the acid that catalyzes tBMA deprotection during post‐exposure baking. This self‐sensitization mechanism enables the precise formation of high‐resolution negative‐tone patterns with enhanced sensitivity and resolution.
Yuting Tang   +9 more
wiley   +1 more source

Nanomaterials‐Decorated Biomass‐Derived Carbon for Overall Water Splitting: Interfacial Engineering, Mechanistic Insights, and Device Translation

open access: yesThe Chemical Record, EarlyView.
Biomass‐derived carbon provides a sustainable, porous, and conductive scaffold that stabilizes nanomaterials for bifunctional hydrogen evolution reaction/oxygen evolution reaction catalysis. This review summarizes design strategies (defects, heteroatom doping, heterostructures, single atoms), mechanistic/density functional theory insights, degradation ...
Paricha Jebin   +8 more
wiley   +1 more source

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