Results 51 to 60 of about 4,722,607 (293)

A Knowledge‐Based Approach for Understanding and Managing Additive Manufacturing Data

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing processes generate a large amount of data. Effectively managing, understanding, and retrieving information from this data remains a major challenge. Therefore, we propose an ontology‐based approach to integrate heterogeneous data, enable semantic queries, and support decision‐making.
Mina Abd Nikooie Pour   +5 more
wiley   +1 more source

65% Efficient Multijunction Photovoltaic Laser Power Converters Operating over 150 W/cm2

open access: yesPhotonics
Multijunction laser power converters are demonstrated for the first time with high efficiencies for average optical irradiances exceeding 150 W/cm2. The GaAs-based photovoltaic power converting III-V heterostructures are designed with six GaAs subcells ...
Simon Fafard, Denis Masson
doaj   +1 more source

Living and Working Safely Around High-Voltage Power Lines. [PDF]

open access: yes, 1998
High-voltage transmission lines can be just as safe as the electrical wiring in the homes--or just as dangerous. The crucial factor is ourselves: they must learn to behave safely around them.
United States. Bonneville Power Administration.
core   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

Agile Phased Array Calibration Strategy for Wireless Power Transfer in Large-Scale Battery-Less Sensor Networks With Cold-Start and Phase Pre-Warping

open access: yesIEEE Access
This paper introduces an agile phased array calibration strategy for wireless powering large-scale battery-less sensor networks. The calibration strategy compensates for the systematic phase errors in the transmitter (TX) panel and wavefront traveling ...
Zhiyong Zhang   +6 more
doaj   +1 more source

The Radio to GeV Afterglow of GRB 221009A

open access: yesThe Astrophysical Journal Letters, 2023
GRB 221009A ( z = 0.151) is one of the closest known long γ -ray bursts (GRBs). Its extreme brightness across all electromagnetic wavelengths provides an unprecedented opportunity to study a member of this still-mysterious class of transients in ...
Tanmoy Laskar   +29 more
doaj   +1 more source

Laser power beaming for satellite applications

open access: yes, 1993
A serious consideration of laser power beaming for satellite applications appears to have grown out of a NASA mission analysis for transmitting power to lunar bases during the two week dark period.
Friedman, H. W.
core   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

Probing Evolution of Long Gamma-Ray Burst Properties through Their Cosmic Formation History

open access: yesThe Astrophysical Journal
The astrophysics of long gamma-ray burst (LGRB) progenitors as well as possible cosmological evolution in their properties still poses many open questions.
Nikita S. Khatiya   +5 more
doaj   +1 more source

The PRIMA Thesaurus for Materials Science and Engineering

open access: yesAdvanced Engineering Materials, EarlyView.
The PRIMA Thesaurus is a structured vocabulary designed to improve how materials science data is described and shared. Developed with input from multiple experts, it enables clear documentation of research workflows, data exchange, and reuse across platforms.
Rossella Aversa   +8 more
wiley   +1 more source

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