Results 11 to 20 of about 358,542 (314)

Polarity Inversion in Polar-Nonpolar-Polar Heterostructures [PDF]

open access: yesPhysical Review Letters, 2001
We have observed an epilayer-thickness-dependent polarity inversion for the growth of CdTe on Sb(Bi)/CdTe(111)B. For films with Sb(Bi) thicknesses of less than 40 A (15 A), the CdTe layer shows a B (Te-terminated) face, but it switches to an A (Cd-terminated) face for thicker layers.
Cho, Sunglae   +6 more
openaire   +4 more sources

Polarization and Polar Codes [PDF]

open access: yesFoundations and Trends® in Communications and Information Theory, 2012
This tutorial treats the fundamentals of polarization theory and polar coding. Arikan’s original results on binary source and channel polarization methods are studied. Error probability and complexity analyses are offered. The original results are generalized in several directions.
openaire   +2 more sources

Frontiers: Polarized America: From Political Polarization to Preference Polarization

open access: yesMarketing Science, 2023
This paper investigates whether the polarization of political ideology extends to consumers’ preferences, intentions, and purchases.
Verena Schoenmueller   +2 more
openaire   +2 more sources

Universal Polarization [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
A method to polarize channels universally is introduced. The method is based on combining two distinct channels in each polarization step, as opposed to Arikan's original method of combining identical channels. This creates an equal number of only two types of channels, one of which becomes progressively better as the other becomes worse. The locations
Eren Sasoglu, Lele Wang 0001
openaire   +2 more sources

Polar shapelets [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2005
The shapelets method for image analysis is based upon the decomposition of localised objects into a series of orthogonal components with convenient mathematical properties. We extend the "Cartesian shapelet" formalism from earlier work, and construct "polar shapelet" basis functions that separate an image into components with explicit rotational ...
Massey, R., Refregier, A.
openaire   +3 more sources

Neuronal Polarity [PDF]

open access: yesCold Spring Harbor Perspectives in Biology, 2009
The assembly of functional neuronal networks in the developing animal relies on the polarization of neurons, i.e., the formation of a single axon and multiple dendrites. Breaking the symmetry of neurons depends on cytoskeletal rearrangements. In particular, axon specification requires local dynamic instability of actin and stabilization of microtubules.
Tahirovic, S., Bradke, F.
openaire   +3 more sources

Polarity-Sensitive Cell Membrane Probe Reveals Lower Polarity of Tumor Cell Membrane and Its Application for Tumor Diagnosis

open access: yes, 2022
Cancer is a health threat worldwide, and it is urgent to develop more sensitive cancer detection methods. Herein, a polarity-sensitive cell membrane probe (named COP) was developed for detecting cancer cells and tumors sensitively and selectively at the ...
Jiaxin Hong (6939563)   +4 more
core   +1 more source

Political polarization [PDF]

open access: yesProceedings of the National Academy of Sciences, 2007
Failures of government policies often provoke opposite reactions from citizens; some call for a reversal of the policy, whereas others favor its continuation in stronger form. We offer an explanation of such polarization, based on a natural bimodality of preferences in political and economic contexts and consistent with Bayesian rationality.
Dixit, Avinash, Weibull, Jörgen
openaire   +5 more sources

Cell polarity and PIN protein positioning in Arabidopsis requie STEROL METHYLTRANSFERASE1 function [PDF]

open access: yes, 2003
Plants have many polarized cell types, but relatively little is known about the mechanisms that establish polarity. The orc mutant was identified originally by defects in root patterning, and positional cloning revealed that the affected gene encodes ...
Friml, Jirí   +12 more
core   +1 more source

Cell Polarity and Morphogenesis: Functions and Mechanisms of Cell Divisions in Vertebrate Gastrulation [PDF]

open access: yes, 2004
Gastrulation shapes a vertebrate embryo from an egg-shaped aggregate of cells. In many vertebrates, massive cell divisions occur during gastrulation. In this thesis, I investigate the pattern, function, and regulation of mitotic divisions in zebrafish ...
Gong, Ying, Ying Gong
core   +1 more source

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