Results 81 to 90 of about 728 (237)

Elation generalized quadrangles with extra automorphisms and trivial spans

, 2007
We show that the parameters of a finite elation generalized quadrangle for which the point spans containing the elation point (∞) are trivial, and which admit extra automorphisms fixing (∞) linewise, are powers of the same prime, so that the elation ...
Thas, Koen, Koen Thas
core   +1 more source

Stability Evaluation and Parametric Optimization of Coal‐Concrete Composite Bearing Systems Under Mine‐Water‐Induced Deterioration: Experiments and FEINN Analysis

Energy Science &Engineering, EarlyView.
Mine‐water immersion tests reveal pronounced coal weakening (vs. minor concrete degradation), identifying coal pillars as the stability‐limiting component in composite dams. A coupled FEINN framework quantifies extreme‐pressure stability and ranks multi‐parameter designs via a normalized multi‐indicator scheme, enabling optimized dam configuration for ...
He Wen, Hongchuan Dai, Guixin Zhang, Pengzhe Li, Tong Yang, Cang Gong, Renbo Gao   +6 more
wiley   +1 more source

K/UR ; 147 [PDF]

, 1981
"Results of a reconnaissance geochemical survey of the Scottsbluff Quadrangle are reported. Field and laboratory data are presented for 567 groundwater and 402 stream sediment samples.
National Uranium Resource Evaluation Program
core  

Inter‐Material Transfer Learning for Accelerated Nanofluid Heat Transfer Prediction: A Machine Learning Approach for Energy Systems

Energy Science &Engineering, EarlyView.
This study presents an inter‐material transfer learning framework for nanofluid heat transfer prediction in energy systems. By leveraging knowledge from Al2O3‐water data, the model accurately predicts hybrid Al2O3‐TiO2 nanofluid performance with only 20 simulations, achieving R2 = 0.985 and reducing computational requirements by 78. ABSTRACT This paper
Soumaya Hadj Salah, Aymen Ochi, Sonia Bezi   +2 more
wiley   +1 more source

Generalized Quadrangles and Projective Axes of Symmetry

, 2020
We investigate generalized quadrangles Γ that admit at least two projective axes of symmetry. We show that if there are three such axes incident with a common point x, then x is a translation point of Γ.
Günter F Steinke, Hendrik Van Maldeghem
core  

K/UR ; 159 [PDF]

, 1981
"Results of a reconnaissance geochemical survey of the O'neill Quadrangle are reported. Field and laboratory data are presented for 23 groundwater and 292 stream sediment samples.
National Uranium Resource Evaluation Program
core  

Edge‐Based Discretizations on Triangulations in Any Dimension, With Special Attention to Four‐Dimensional Space

International Journal for Numerical Methods in Fluids, EarlyView.
This article provides important geometric formulas for node‐centered, edge‐based schemes in any number of dimensions. These formulas are noteworthy, as they do not require the explicit formation of dual regions. We prove several key geometric results, with a particular focus on the four‐dimensional case, due to potential space‐time applications ...
Nicholas Tufillaro, David M. Williams, Hiroaki Nishikawa   +2 more
wiley   +1 more source

Quality Metrics in Acute Stroke: Time to Own. [PDF]

Indian J Crit Care Med, 2023
Ahmed A.
europepmc   +1 more source

Flexibilizing inorganic thermoelectrics

FlexMat, EarlyView.
This perspective reviews advances in flexible inorganic thermoelectric materials, covering ductile bulks, thin films, and fibers/yarns. It highlights strategies like warm metalworking, van der Waals material screening, orientation and sandwich engineering, and device integration, offering pathways to combine flexibility and performance for wearable ...
Xiao‐Lei Shi, Nan‐Hai Li, Meng Li, Zhi‐Gang Chen   +3 more
wiley   +1 more source

Nonisomorphic generalized quadrangles

Journal of Algebra, 1971
AbstractFor each integer e > 2 a class of somewhat more than φ(e) pairwise non-isomorphic quadrangles is exhibited and shown to yield nonisomorphic (v, k, λ)-designs. The collineation groups of these quadrangles and designs are determined. Also a class of quadrangles with s = q − 1, t = q + l, q any prime power, is constructed.
openaire   +1 more source