نتایج جستجو برای: dual map

تعداد نتایج: 347564  

Journal: :Mechanisms of Development 2002
Andrea Klock Bernhard G Herrmann

Mitogen-activated protein (MAP) kinase phosphatases (MKPs) constitute a growing family of dual specificity phosphatases, which dephosphorylate both serine/threonine and tyrosine residues of MAP kinases. MAP kinase signaling cascades are involved in the control of cell proliferation, differentiation and apoptosis. In mammals, ten members of the dual-specificity MKP family have so far been identi...

Journal: :The EMBO journal 2007
Matt K Lee Cécile Pardoux Marie C Hall Pierre S Lee David Warburton Jing Qing Susan M Smith Rik Derynck

Erk1/Erk2 MAP kinases are key regulators of cell behaviour and their activation is generally associated with tyrosine kinase signalling. However, TGF-beta stimulation also activates Erk MAP kinases through an undefined mechanism, albeit to a much lower level than receptor tyrosine kinase stimulation. We report that upon TGF-beta stimulation, the activated TGF-beta type I receptor (TbetaRI) recr...

2008
David Sontag Talya Meltzer Amir Globerson Tommi S. Jaakkola Yair Weiss

Linear Programming (LP) relaxations have become powerful tools for finding the most probable (MAP) configuration in graphical models. These relaxations can be solved efficiently using message-passing algorithms such as belief propagation and, when the relaxation is tight, provably find the MAP configuration. The standard LP relaxation is not tight enough in many real-world problems, however, an...

2012
COLIN ADAMS

The bridge index and superbridge index of a knot are important invariants in knot theory. We define the bridge map of a knot conformation, which is closely related to these two invariants, and interpret it in terms of the tangent indicatrix of the knot conformation. Using the concepts of dual and derivative curves of spherical curves as introduced by Arnold, we show that the graph of the bridge...

1980
W. G. DWYER

The indicated operation algebra is studied by methods dual to the usual ones for studying the Steenrod algebra. In particular, the operations are constructed using higher symmetries of the shuffle map and their "Adem relations" are computed using the transfer map in the cohomology of symmetric groups.

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1983
F E Browder

The classical degree function constructed earlier for pseudomonotone mappings has been used to develop a broader degree theory of classical type for the sum of a maximal monotone map from a reflexive Banach space to its dual together with a bounded pseudomonotone map. The proof uses the generalized Yosida approximation of the maximal monotone mapping.

Journal: :The Journal of biological chemistry 1993
R K Jaiswal M B Murphy G E Landreth

Nerve growth factor treatment of PC12 cells results in the rapid activation of MAP kinases. These enzymes are activated through interaction with a protein "activator." The mitogen-activated protein (MAP) kinase activator has been partially purified by ion exchange and gel filtration chromatography. The activator has an apparent molecular mass of 50-60 kDa. The MAP kinase activator is rapidly ge...

2015
Ye-Kyu Rhee Yoon-Hyuk Huh Lee-Ra Cho Chan-Jin Park

PURPOSE The aim of this study is to evaluate the appropriate impression technique by analyzing the superimposition of 3D digital model for evaluating accuracy of conventional impression technique and digital impression. MATERIALS AND METHODS Twenty-four patients who had no periodontitis or temporomandibular joint disease were selected for analysis. As a reference model, digital impressions wi...

Journal: :Diagnostic and interventional radiology 2017
İlknur Özdeniz İlkay S İdilman Seyfettin Köklü Erhan Hamaloğlu Mustafa Özmen Deniz Akata Muşturay Karçaaltıncaba

PURPOSE We aimed to determine dual-energy computed tomography (DECT) characteristics of colorectal cancer and investigate effectiveness of DECT method in differentiating tumor from stool in patients with colorectal cancer. METHODS Fifty consecutive patients with colorectal tumors were enrolled. Staging was performed by DECT (80-140 kV) using dual-source CT after rectal air insufflation and wi...

Journal: :IEEE Journal on Selected Areas in Communications 1998
Andrew J. Viterbi

An intuitive shortcut to understanding the maximum a posteriori (MAP) decoder is presented based on an approximation. This is shown to correspond to a dual-maxima computation combined with forward and backward recursions of Viterbi algorithm computations. The logarithmic version of the MAP algorithm can similarly be reduced to the same form by applying the same approximation. Conversely, if a c...

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