Infrared thermograms applied to near-field testing

Electromagnetic fields close to radiant structures can be measured quickly using an infrared camera. Examples of induced fields by wire antennas over a detection screen at distances shorter than one wavelength are presented. The measured thermograms agree with simulations that take into account heat propagation on the detection screenPeer ReviewedPostprint (published version

Two-point functions for N=4 Konishi-like operators

We compute the two-point function of Konishi-like operators up to one-loop order, in N=4 supersymmetric Yang-Mills theory. We work perturbatively in N=1 superspace. We find the expression expected on the basis of superconformal invariance and determine the normalization of the correlator and the anomalous dimension of the operators to order g^2 in the coupling constant.Comment: 10 pages, 3 figures; added references and some clarifying comment

Active zone self-similarity of fractal sierpinski antenna verified using infra-red thermograms

The surface current distribution of a Sierpinski fractal antenna shows a self-similar behaviour determined by the self-similar properties of its geometry. The application of infra-red thermography to electromagnetic near field detection allows the experimental verification of the active region scaling of a fractal antenna operating at different bands.Peer ReviewedPostprint (published version

A Classification Module for Genetic Programming Algorithms in JCLEC

JCLEC-Classi cation is a usable and extensible open source library for genetic program- ming classi cation algorithms. It houses implementations of rule-based methods for clas- si cation based on genetic programming, supporting multiple model representations and providing to users the tools to implement any classi er easily. The software is written in Java and it is available from http://jclec.sourceforge.net/classification under the GPL licens

Los sulfuros masivos volcanogénicos de la Cuenca Lancones (Piura-Perú)

The Lancones basin is located on the north west coastal belt area of Peru, in the Department of Piura. It isbordered to the west by the Palaeozoic Amotapes coastal massif and to the east by the Western Andespre-mountain range region. This basin extends to Ecuador, where it is called Celica basin.The Lancones basin contains arc-related felsic and mafic volcanic rocks, which make it an excellent targetfor exploration for volcanogenic massive sulphide (VMS) deposits in Peru. Actually the Lancones basinhosts the Tambogrande VMS group of deposits, which constitute the most advanced VMS project in Peru.This group consists of three world-class massive sulphide deposits TG1, TG3 and B5.The Lancones basin is part of a first-order extensive rift, in which tholeiitic oceanic-arc crust was generated.This extensional basin developed between the late Jurassic and the early Cretaceous period. The breakupof Laurasia and Gondwana, which began in the middle Jurassic, resulted in the north-west movement ofwhat is presently the South American continent. The rift formed along a subduction zone on the westernside of this continent.The stratigraphy of the submarine volcanic sequences is composed of a basal formation, the Basal VolcanicGroup or GBV, which is disconformably overlain by a volcano-sedimentary formation, the VolcanicSedimentary Group or GVS. These two formations contain two distinct metallogenic suites within theLancones basin. Each is distinguished by specific lithogeochemical, petrographic and mineral attributes,age determinations and VMS deposit types.The pre-Albian mafic bimodal GBV contains high grade, large tonnage Cu-Zn type VMS deposits(Tambogrande type) associated to dacitic domes formed in second – or third-order extensional basins. Themiddle to upper Albian GVS contains low tonnage Zn-Pb-Cu type VMS mineralizations (Kuroko type).These are associated with felsic sequences of rhyolitic to dacitic composition, associated with a felsicdominatedarc setting. The rocks of the GBV, which contain the polymetallic Tambogrande deposits, aretholeiitic. The rocks of GVS are mainly transitional between calc-alkaline and tholeiitic