Results 91 to 100 of about 323,104 (323)

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

open access: yesAdvanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu   +14 more
wiley   +1 more source

On polynomial digraphs

open access: yesDiscrete Mathematics, 2006
Let $ (x,y)$ be a bivariate polynomial with complex coefficients. The zeroes of $ (x,y)$ are given a combinatorial structure by considering them as arcs of a directed graph $G( )$. This paper studies some relationship between the polynomial $ (x,y)$ and the structure of $G( )$.
Josep M. Brunat, Antonio Montes
openaire   +3 more sources

Synthesis of algorithms for complex filtering of measurements for satellite navigation systems of unmanned aerial vehicles

open access: yesТехнічна інженерія
The widespread use of unmanned aerial vehicles (UAVs) of various classes in both the military and civilian spheres requires the development and production of high-precision on-board navigation systems of low cost, weight and dimensions.
I. Zimchuk   +3 more
doaj   +1 more source

Comparison of Two Interpolation Methods for Resampling Center of Mass Velocity Data [PDF]

open access: yesSport Mont, 2016
Data interpolation methods are highly useful for estimating missing values. Another usage of these methods is resampling the measured data. In the field of biomechanics sometimes researchers have to deal problems related to data acquisition rate or ...
Uğur Ödek
doaj  

q-Bernstein polynomials, q-Stirling numbers and q-Bernoulli polynomials [PDF]

open access: yesarXiv, 2010
In this paper, we give new identities involving Phillips q-Bernstein polynomials and we derive some interesting properties of q-Berstein polynomials associated with q-Stirling numbers and q-Bernoulli polynomials.
arxiv  

Material Composition Gradient Controls the Autonomous Opening of Banksia Seed Pods in Fire‐Prone Habitats

open access: yesAdvanced Functional Materials, EarlyView.
The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe   +7 more
wiley   +1 more source

ANALYTICAL SOLUTION OF BASIC SHIP HYDROSTATICS INTEGRALS USING POLYNOMIAL RADIAL BASIS FUNCTIONS

open access: yesBrodogradnja, 2015
One of the main tasks of ship's computational geometry is calculation of basic integrals of ship's hydrostatics. In order to enable direct computation of those integrals it is necessary to describe geometry using analytical methods, like description ...
Dario Ban, Josip Bašić
doaj  

Polynomial Form of Binary Cyclotomic Polynomials [PDF]

open access: yesarXiv, 2018
This paper presents a closed form polynomial expression for the binary cyclotomic polynomial. We contrast this against expressions for binary cyclotomic polynomials in (Lam and Leung 1996) and (Lenstra 1979).
arxiv  

Wetting of Surface Grafted Hydrophilic‐b‐Hydrophobic Block Copolymer Brushes

open access: yesAdvanced Functional Materials, EarlyView.
The wetting properties of surface grafted diblock copolymer brushes are influenced by the thickness of the hydrophilic bottom block and the hydrophobic top block. The surface adapts in presence of water and the contact angles of the bottom block shine through. Abstract The wetting of diblock copolymer brushes by water is studied.
Benjamin Leibauer   +7 more
wiley   +1 more source

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