نتایج جستجو برای: σ modification

تعداد نتایج: 149902  

Journal: :Dalton transactions 2016
Hiroyoshi Ohtsu Masaki Kawano

Iodinated pores of a Zn-based coordination network were modified by Br2 oxidation to produce brominated pores in a polycrystalline-to-polycrystalline manner while maintaining the same network topology. Ab initio X-ray powder diffraction analysis and Raman spectroscopy revealed that the brominated pore can trap Br2 or I2 by strong σ/π-type interactions. A kinetic study in solution revealed that ...

2012
Soon-Hyun Park Takami Matsuo

This paper presents an adaptive differentiator of sequential data based on the adaptive control theory. The algorithm is applied to detect moving objects by estimating a temporal gradient of sequential data at a specified pixel. We adopt two nonlinear intensity functions to reduce the influence of noises. The derivatives of the nonlinear intensity functions are estimated by an adaptive observer...

Journal: :Comptes Rendus Mathematique 2023

In this Note, we consider traveling waves in a reaction-diffusion equation dimension one. Motivated by the motion of dislocations crystals, introduce an additive parameter σ reaction term, which may be interpreted as exterior force applied on crystal. Under certain natural assumptions and for every value σ∈[σ - ,σ + ], show existence ϕ velocity c. The range σ∈(σ ) corresponds to bistable cases ...

2009
Tansel Yucelen Anthony J. Calise Wassim M. Haddad Kostyantyn Y. Volyanskyy

This paper presents a neuroadaptive full-state feedback controller design for the Boeing unmanned combat aerial vehicle (UCAV), and a neuroadaptive output feedback controller design for a damped van der Pol oscillator model. The proposed neuroadaptive controllers employ a novel controller architecture involving additional terms in the update laws that are constructed using a moving window of th...

Journal: :Formalized Mathematics 2015
Noboru Endou Kazuhisa Nakasho Yasunari Shidama

In this article, semi-ring and semi-algebra of sets are formalized so as to construct a measure of a given set in the next step. Although a semi-ring of sets has already been formalized in [12], that is, strictly speaking, a definition of a quasi semi-ring of sets suggested in the last few decades [14]. We adopt a classical definition of a semi-ring of sets here to avoid such a confusion. Ring ...

Journal: :Math. Log. Q. 2013
Vladimir Kanovei Vassily A. Lyubetsky

We prove several dichotomy theorems which extend some known results on σ -bounded and σ -compactpointsets. In particular we show that, given a finite number of Δ1 equivalence relations F1 , . . . , Fn , any Σ1 set A of the Baire space either is covered by compact Δ1 sets and lightface Δ1 equivalence classes of the relations Fi , or A contains a superperfect subset which is pairwise Fi -inequiva...

Journal: :Discrete Mathematics 2004

Journal: :Nanoscale 2015
Jian Wang Zhiqiang Wang Hyunjin Cho Myung Jong Kim T K Sham Xuhui Sun

Chemical imaging, thickness mapping, layer speciation and polarization dependence have been performed on single and multilayered (up to three layers and trilayered nanosheets overlapping to form 6 and 9 layers) hexagonal boron nitride (hBN) nanosheets by scanning transmission X-ray microscopy. Spatially-resolved XANES directly from freestanding regions of different layers has been extracted and...

2011
ALEXANDRE BELLONI

We propose a pivotal method for estimating high-dimensional sparse linear regression models, where the overall number of regressors p is large, possibly much larger than n, but only s regressors are significant. The method is a modification of the lasso, called the square-root lasso. The method is pivotal in that it neither relies on the knowledge of the standard deviation σ or nor does it need...

2007
JACOB VOSMAER

The essentially Σ1 formulae of ΣL are exactly those which are provably equivalent to a disjunction of conjunctions of 2 and Σ1 formulae.

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