Results 51 to 60 of about 29,813 (281)

Almost structural completeness; an algebraic approach [PDF]

open access: yes, 2014
A deductive system is structurally complete if its admissible inference rules are derivable. For several important systems, like modal logic S5, failure of structural completeness is caused only by the underivability of passive rules, i.e. rules that can
M. Stronkowski, Michał, Wojciech Dzik
core  

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

Groups whose universal theory is axiomatizable by quasi-identities

open access: yesJournal of Group Theory, 2002
A group \(G\) is called square-like if the universal theory of \(G\) coincides with that of its direct square \(G\times G\). It is shown that the class of square-like groups is first-order axiomatizable. A group \(G\) is said to be discriminating if and only if \(G\) discriminates \(G\times G\).
Fine, Benjamin   +3 more
openaire   +4 more sources

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

open access: yesAdvanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart   +3 more
wiley   +1 more source

The Impacts of Teaching the Educational Pattern on Improving the Parent-Child Relationship and the National and Religious Identity [PDF]

open access: yesپژوهش در نظام‌های آموزشی, 2018
The current research aims to study the impacts of teaching the educational pattern on improving the parent-child relationship and the national and religious identity.
fariba farazi   +3 more
doaj   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente   +3 more
wiley   +1 more source

Pilot study of a serious board game intervention to facilitate narrative identity reconstruction in mental health recovery

open access: yesHealth Psychology Open, 2020
This quasi-experimental study explores the effects of a narrative coaching board game intervention aimed at enhancing participants’ sense of self-mastery as part of facilitating narrative identity reconstruction. Three mixed analyses of variance compared
Douglas JR Kerr   +2 more
doaj   +1 more source

Supertropical SLn [PDF]

open access: yes, 2015
Also arXiv:1508.04483Extending earlier work on supertropical adjoints and applying symmetrization, we provide a symmetrized supertropical version SLn of the special linear group, which we partition into submonoids, based on " quasi-identity " matrices ...
Izhakian, Zur, Niv, Adi, Rowen, Louis
core   +2 more sources

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

open access: yesAdvanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu   +4 more
wiley   +1 more source

Essentially Quasi-Invertible Submodules and Essentially Quasi-Dedekind Modules

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
        Let R be a commutative ring with  identity . In this paper  we study  the concepts of  essentially quasi-invertible submodules and essentially  quasi-Dedekind modules  as  a generalization of  quasi-invertible submodules and quasi-Dedekind ...
I.M-A Hadi, Th. Y. Ghawi
doaj  

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