Results 41 to 50 of about 3,388 (272)
Jordan left derivations in full and upper triangular matrix rings
, 2010 In this paper, left derivations and Jordan left derivations in full and upper triangular matrix rings over unital associative rings are ...
Zhang, Hong-Ying, Xu, Xiao-Wei
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Optimization of the Production of Rubber Compounds Using Mathematical Models
Advanced Engineering Materials, EarlyView.Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle +7 more
wiley +1 more source
A Unified Approach to Generalizing π-Extending and π-Baer Rings
Journal of MathematicsThis paper introduces and examines the right essentially π-Baer ring property, which serves as a new extension of the π-extending and π-Baer ring conditions. The initial phase of the study involves the development of several foundational results.
Yeliz Kara
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Derived equivalences of upper-triangular ring spectra via lax limits
Comptes Rendus. MathématiqueWe extend a theorem of Ladkani concerning derived equivalences between upper-triangular matrix rings to ring spectra. Our result also extends an analogous theorem of Maycock for differential graded algebras.
Jasso, Gustavo
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Retractable and Coretractable Modules over Formal Triangular Matrix Rings
, 2019 In this paper, we study retractable modules and coretractable modules over a formal triangular matrix ring T = [A O M B], where A and B are rings and M is a (B,A)-bimodule.
Tribak, Rachid +1 more
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Nondestructive Testing of Welded Composite Metal Foams
Advanced Engineering Materials, EarlyView.X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva +2 more
wiley +1 more source
Complete blocked triangular matrix rings over a Noetherian ring
, 1998 We show that the underlying Boolean matrix B of a complete blocked triangular matrix ring M(B, R) over a left Noetherian ring R is unique, i.e. if M(B1, R) and M(B2, R) are isomorphic complete blocked triangular matrix rings over a left Noetherian ring R,
Dăscălescu, S., van Wyk, L.
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Advanced Engineering Materials, EarlyView.This work shows that the mechanical performance of multimaterial digital light processing (DLP) printed thermoset composites is governed by resin compatibility and interfacial design rather than spatial patterning alone. Brittle and ductile resin combinations produced premature interfacial failure, while graded interfaces and mechanically compatible ...
Ahmed M. H. Ibrahim +3 more
wiley +1 more source
Journal of Chemistry, 2017 In order to investigate the residual characteristics, sources, and ecological risk of PAHs in sediment from urban rivers, the sediments of 15 typical sites from Qinhuai River and Xuanwu Lake, which are typical urban rivers and lake, were collected from ...
Zhenhua Zhao +3 more
doaj +1 more source
A pseudorandom bit generator based on block upper triangular matrices
, 2003 The popularity of the Web has created a great marketplace for businesses to sell and showcase their products increasing the need for secure Web services such as SSL, TLS or SET.
Antonio Zamora +7 more
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