Of the several factors which influence electrocatalytic activity, particle size and structural effects are of crucial importance, but their effects and mechanism of interaction, vis-a-vis overall performance, have been, at best, vaguely understood. The situation is further aggravated by the use of a wide range of experimental conditions resulting in non-comparable data. This paper attempts syst...

We give a geometric approach to the relation between the irreducible components of the characteristic varieties of local systems on a plane curve arrangement complement and the associated pencils of plane curves discovered recently by M. Falk and S. Yuzvinsky [10] in the case of line arrangements. In this case, this geometric point of view was already hinted to by A. Libgober and S. Yuzvinsky, ...

Among the different aspects of converting an engineering drawing to CAD, 3-D reconstruction from several views has only been dealt with from a geometric perspective, although a lot of information is of symbolic nature and can be recognized as such directly on a single view. In this paper, we present a first prototype of a system combining geometric reconstruction through the “fleshing out proje...

In this tutorial paper we will report on our experience in the use of geometric algebra (GA) in robot vision. The results could be reached in a long term research programme on modelling the perceptionaction cycle within geometric algebra. We will pick up three important applications from image processing, pattern recognition and computer vision. By presenting the problems and their solutions fr...

This paper reviews in a condensed form the main tools and results of the geometric approach developed in the last forty years. Because of the vastness of the subject, this tutorial does not pretend to be exhaustive, and more emphasis will be given to selected topics and to the related computational tools. The authors hope their effort to provide a unified view of geometric control theory may be...

This paper goes beyond recognizing human actions from a fixed view and focuses on action recognition from an arbitrary view. A novel learning algorithm, called latent kernelized structural SVM, is proposed for the view-invariant action recognition, which extends the kernelized structural SVM framework to include latent variables. Due to the changing and frequently unknown positions of the camer...

This paper gives an overview of selected topics in mechanics and their relation to questions of stability, control and stabilization. The mechanical connection, whose holonomy gives phases and that plays an important role in block diagonalization, provides a unifying theme. 1 The Mechanical Connection The mechanical connection is a basic object that links mechanics and gauge theory. This point ...

In this paper, a particular technique for the application of elementary multilevel 8 ideas to problems with warped boundaries is studied in the context of the numerical simulation 9 of elastic contact problems. Combining a general multilevel setting with a different perspec10 tive, namely an advanced geometric modeling point of view, we present a (monotone) multi11 grid method based on a hierar...

A category of methods usually called Image Based rendering has appeared recently to produce realistic images of objects. Instead of creating models from geometric primitives which are then rendered according to the point of view and the illumination given, the light reflected/emitted from objects is captured from enough different points of view to be able to reconstruct the light received from ...

The decoding scheme of a stimulus can be different from the stochastic encoding scheme in the neural population coding. The stochastic fluctuations are not independent in general, but an independent version could be used for the ease of decoding. How much information is lost by using this unfaithful model for decoding? There are discussions concerning loss of information (Nirenberg & Latham, 20...