Results 71 to 80 of about 267,916 (279)

4D‐Printed Spin Crossover Metamaterials with Giant Programmable Positive or Negative Thermal Expansion

open access: yesAdvanced Materials, EarlyView.
Spin crossover composite filaments are implemented for the rational design of 4D‐printed mechanical metamaterials. The obtained bi‐material structures guided by a theoretical analysis based on analytical calculations and Finite Element Analysis simulations exhibit giant programmable positive or negative deformation with coefficients of thermal ...
Adelais Trapali   +7 more
wiley   +1 more source

ON THE DISTRIBUTION OF THE SECOND DEGREES OF CONFIGURATION GRAPHS VERTICES

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
The object is configuration graphs with N vertices, numbered from 1 to N, whosevertex degrees are independent identically distributed random variables.
Elena Khvorostyanskaya
doaj   +1 more source

Actuation of Cell Layers in Three Dimensions

open access: yesAdvanced Materials, EarlyView.
ABSTRACT The alignment of fibers and cells in living tissues affect their mechanical properties and functionality. In this context, one can draw an analogy between tissues and nematic liquid crystal elastomers. We explore this analogy by growing fibroblasts on 2D‐patterned substrates and observing the contraction of cell sheets upon detachment from the
Kirsten Endresen   +6 more
wiley   +1 more source

Wilson-Hilferty-type approximation for Poisson Random Variable

open access: yesAdvances in Science, Technology and Engineering Systems Journal, 2020
n ...
Giammatteo Paolo, Di Mascio Tania
openaire   +1 more source

Elephant‐Skin‐Inspired Porous Cementitious Tiles with Programmable Crack Networks for Passive Cooling

open access: yesAdvanced Materials, EarlyView.
Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang   +5 more
wiley   +1 more source

Compound Poisson point processes, concentration and oracle inequalities

open access: yesJournal of Inequalities and Applications, 2019
This note aims at presenting several new theoretical results for the compound Poisson point process, which follows the work of Zhang et al. (Insur. Math. Econ. 59:325–336, 2014).
Huiming Zhang, Xiaoxu Wu
doaj   +1 more source

The Effect of Corruption on International Trade: A Case Study of Indonesian Trade to Nine Countries

open access: yesEko-Regional, 2018
Corruption is a form of abuse of ethical authority by public officials, which is divided into two parts: bribery and forced collection. The effect of corruption like bribes and illegal levies is widespread in the public sector.
Danang Ibnu Atsir, Sunaryati Sunaryati
doaj   +1 more source

Bounds in Poisson Approximation for Random Sums of Bernoulli Random Variables

open access: yesJournal of Mathematics Research, 2012
Let $(X_n)$ be a sequence of Bernoulli random variables and $N$ a positive integer value random variable. Assume that $N, X_1, X_2,\ldots$ are independent. In this paper, we investigate uniform and non-uniform bounds in Poisson approximation for random sums $X_1+X_2+\cdots+X_N$.
Sasithorn Kongudomthrap   +1 more
openaire   +2 more sources

Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance

open access: yesAdvanced Materials Interfaces, EarlyView.
Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad   +3 more
wiley   +1 more source

On extended stochastic integrals with respect to Lévy processes

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
Let $L$ be a Levy process on $[0,+\infty)$. In particular cases, when $L$ is a Wiener or Poisson process, any square integrable random variable can be decomposed in a series of repeated stochastic integrals from nonrandom functions with respect to $L ...
N.A. Kachanovsky
doaj   +1 more source

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