Results 41 to 50 of about 18,792 (221)

Negative Stiffness Induced and Controlled by Constriction

open access: yesphysica status solidi (b), EarlyView.
Structures with negative stiffness can be stabilized by constriction of external displacement. Furthermore, constriction can make a conventional positive stiffness material exhibit negative stiffness, either bidirectional or unidirectional (shown in the figure).
Elena Pasternak, Arcady V. Dyskin
wiley   +1 more source

Can riots represent? A democratic theory

open access: yesAmerican Journal of Political Science, EarlyView.
Abstract Political theory has been perennially concerned with interrogating, identifying, and clarifying the political functions of riots. Yet, political theorists have mostly fallen short of explaining the relationship between riots and democracy, although this is central to the democratic theory of contestation and crucial for evaluating the ...
Alexis Bibeau‐Gagnon
wiley   +1 more source

Simplified Calculation Method for Existing Tunnel Settlement Caused by Shield Under-passing Based on Timoshenko-PasternakModel

open access: yesChengshi guidao jiaotong yanjiu
Objective It is aimed to tackle the inefficient accuracy of traditional Euler-Bernoulli beam and Winkler foundation model in calculating settlement induced by shield under-passing existing tunnels. Method Based on the Timoshenko beam theory and Pasternak
WANG Liang   +3 more
doaj   +1 more source

Enhancing Literacy Instruction through Technology [PDF]

open access: yes, 2018
Technology has altered how children experience language. As technology has taken root in society, literacy skills have expanded beyond simply reading and writing print texts to include interacting with digital texts and media.
Haugen, Kaylin M
core   +1 more source

Pressure dependence of the Verwey transition in magnetite: an infrared spectroscopic point of view [PDF]

open access: yes, 2012
We investigated the electronic and vibrational properties of magnetite at temperatures from 300 K down to 10 K and for pressures up to 10 GPa by far-infrared reflectivity measurements.
Baldassarre, L.   +5 more
core   +3 more sources

Nonlinear vibrations of fluid transporting pipelines on a viscoelastic foundation

open access: yesИнженерно-строительный журнал, 2019
The article presents the results of a study of vibration process in pipelines conveying fluid or gas. A mathematical model pipeline was used in the form of cylindrical shell and a viscoelastic foundation in the form of two-parameter model of the ...
Bakhtiyar Khudayarov, Fozil Turaev
doaj   +1 more source

Application of Differential Transform Method to Vibration Analysis of Damped Railway Bridge on Pasternak Foundation under Moving Train [PDF]

open access: yes, 2016
In this paper, we used differential transform method (DTM) to analyse free vibration of a railway bridge, modelled as an orthotropic rectangular plate, supported by Pasternak foundation. The effect of damping was considered.
Agarana, M. C., Ede, A. N.
core  

Use of Glucagon‐Like Peptide‐1 Receptor Agonists and Risk of Parkinson's Disease: Scandinavian Cohort Study

open access: yesDiabetes, Obesity and Metabolism, EarlyView.
ABSTRACT Aims To investigate the association between use of GLP‐1 receptor agonists and incident Parkinson's disease. Material and Methods Cohort study using data from nationwide registers in Denmark, Norway and Sweden and an active‐comparator, new‐user design.
Arvid Engström   +10 more
wiley   +1 more source

Nonlinear Vibration of a Nonlocal Nanobeam Resting on Fractional-Order Viscoelastic Pasternak Foundations

open access: yesFractal and Fractional, 2018
In the present study, the nonlinear vibration of a nanobeam resting on the fractional order viscoelastic Winkler–Pasternak foundation is studied using nonlocal elasticity theory.
Guy Joseph Eyebe   +3 more
doaj   +1 more source

Elastic-plastic plates on a nonlocal subgrade [PDF]

open access: yes, 2015
A thin elastic-plastic Kirchhoff plate resting on a nonlocal foundation subjected to an axisymmetric load distribution is investigated in the present work.
LANZONI, Luca   +3 more
core  

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