Results 111 to 120 of about 1,644,647 (303)
Skylab parasol material evaluation [PDF]
Results of experimental work to evaluate the degradation rate of a parasol that was used as a means of alleviating thermal problems encountered soon after the launch of the Skylab 1 space vehicle are presented.
Jacobs, S.
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Do we agree with liquid chromatograph operational qualification provided from manufacturers? [PDF]
, 2013 Good manufacturing practices include the concept of equipment qualification which aims to demonstrate in a documented way that equipment operates correctly for its intended use and that it is properly maintained and calibrated. Equipment qualification is
Blanco Roca, Maria +4 more
core
Associations of Rheumatoid Arthritis Disease Activity With Frailty Over Five Years of Follow‐up
Arthritis Care &Research, EarlyView.Objective To evaluate whether rheumatoid arthritis (RA) disease activity is associated with frailty both in cross‐section and longitudinally. Methods Participants within the Veterans Affairs Rheumatoid Arthritis (VARA) registry enrolled from 2003 to 2022 were included.
Courtney N. Loecker +14 more
wiley +1 more source
Machine learning-based method to improve equipment selection and time prediction accuracy
Mechanics & IndustryIn the existing Manufacturing Execution System (MES), process design relies on manual experience, equipment selection is not accurate enough, and the error in working time prediction is significant, which seriously restricts production efficiency and ...
Yin Lei, Gao Qi
doaj +1 more source
A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems
International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam +2 more
wiley +1 more source
Verimlilik DergisiPurpose: The selection of material handling equipment is a strategic decision for companies, as it requires significant capital and affects operational efficiency.
Damla Çevik Aka
doaj +1 more source
Systems cost performance analysis (study 2.3). Volume 1: Executive summary [PDF]
A methodology for developing balanced designs of spacecraft subsystems which interrelates cost, performance, safety, and schedule considerations was developed.
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Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source
Dynamic conversion of solar generated heat to electricity [PDF]
The effort undertaken during this program led to the selection of the water-superheated steam (850 psig/900 F) crescent central receiver as the preferred concept from among 11 candidate systems across the technological spectrum of the dynamic conversion ...
Fourakis, E. +5 more
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