Kinesin & Dynein-family Proteins

Data aproximadaCivit, Josep Ma.Primer pla d'un suport múltiple per a telèfons públics. Els colors de l'element són el blau i el verd, és a dir, els corporatius de Telefònica

The Riemann mapping theorem

Nún. 9811 a Art PúblicLlopart, Ramó

Abstract

Pla general de la plaça Santa Eulàlia on hi destaca una font pública de fundició. Aquesta té dues tasses. Les aixetes són de llautó

Weighted polynomial approximation on unbounded intervals

AbstractMüntz-type theorems are proven for sequences of the form w(t)tαk defined on unbounded intervals

Adolf Prag (1906–2004)

Digitalitzat per Tecnodo

Wavelets and Imaging Informatics: A Review of the Literature

AbstractModern medicine is a field that has been revolutionized by the emergence of computer and imaging technology. It is increasingly difficult, however, to manage the ever-growing enormous amount of medical imaging information available in digital formats. Numerous techniques have been developed to make the imaging information more easily accessible and to perform analysis automatically. Among these techniques, wavelet transforms have proven prominently useful not only for biomedical imaging but also for signal and image processing in general. Wavelet transforms decompose a signal into frequency bands, the width of which are determined by a dyadic scheme. This particular way of dividing frequency bands matches the statistical properties of most images very well. During the past decade, there has been active research in applying wavelets to various aspects of imaging informatics, including compression, enhancements, analysis, classification, and retrieval. This review represents a survey of the most significant practical and theoretical advances in the field of wavelet-based imaging informatics

Asymptotic spectral properties of totally symmetric multilevel Toeplitz matrices

AbstractLet n=(n1,…,nk) be a multiindex and κ(n̲)=∏j=1knj. We say that n→∞ if ni→∞, 1⩽i⩽k. If r=(r1,…,rk) and s=(s1,…,sk), let ∣r−s∣=(∣r1−s1∣,…,∣s1−sk∣). We say that a multilevel Toeplitz matrix of the form Tn̲=[t|r̲-s̲|]r̲,s̲=1̲∞̲ is totally symmetric. Let Qk be the k-fold Cartesian product of Q=[−π,π] with itself, and let {tr̲}r̲=-∞̲∞̲ be the Fourier coefficients of a function f=f(θ1,…,θk) in L2(Qk) that is even in each variable θ1,…,θk, so that Tn is totally symmetric for every n. We associate the multiindex n with 2k multiindices m(n,p), 0⩽p⩽2k−1, such that limn→∞κ(m (n,p))/κ(n)=2−k, 0⩽p⩽2k−1, and ∑p=02k-1κ(m̲(n̲,p)=κ(n̲), and show that the singular values of Tn separate naturally into 2k sets Sn̲,0,…,Sn̲,2k-1 with cardinalities κ(m(n,0)),…,κ(m(n,2k−1)) such that the singular values in each set Sn̲,p are associated with singular vectors exhibiting a particular type of symmetry. Our main result is that the singular values in Sn̲,p and the singular values of Tm(n,p) are absolutely equally distributed with respect to the class G of functions bounded and uniformly continuous on R as n→∞, 0⩽p⩽2k−1. If f is real-valued, then an analogous result holds for the eigenvalues and eigenvectors of Tn

Generic Hecke algebra for Renner monoids

AbstractTo each Renner monoid R we associate a generic Hecke algebra H(R) over Z[q] which is a deformation of the monoid Z-algebra of R. If M is a finite reductive monoid with Borel subgroup B and associated Renner monoid R, then we obtain the associated Iwahori–Hecke algebra H(M,B) by specialising q in H(R) and tensoring by C over Z, as in the classical case of finite reductive groups

AATS Aortic Symposium 2014

Ajuntament de Barcelona. Servei d'Elements UrbansPla general, picat, d'un model de paviment, el Superpanot 4 pastilles (de formigó comprimit). Al costat d'aquest, panot estriat, i altres elements: una paperera Barcelona i un gual de vianants amb pas de peatons. S'ubica a la rambla Catalun

Petanca

Pla general d'una part del Jardí Juan de Mena on es mostren diferents camps per a jugar a la petanca, els quals es separen per unes columnes. Al començament de cada camp hi han bancs de fusta