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Merging Parton Showers and Matrix Elements

Popular Abstract in Swedish Denna avhandling handlar om modeller inom partikelfysik, vilka beskriver naturens minsta beståndsdelar. En atom består av en kärna och elektroner. Kärnan består av protoner och neutroner, vilka i sin tur består av kvarkar och gluoner. Dessa partiklar samt hela den flora av andra partiklar som bara går att skapa vid experiment är vad som studeras inom partikelfysiken. DThis thesis considers models for describing high energy particle collisions. Existing phenomonological models are modified and new implementations made in order to achive a better description of states with several hard jets. To predict final state hadrons, parton showers are used together with pheonomenological hadronization models. These models describe a wide range of observables, but have the

Making MLSD-decisions on some individual symbols in a sequence by thresholding the matched filter output

We present a detector that, by thresholding the output of the matched filter, gives MLSD-decisions on binary, antipodally modulated symbols that have been corrupted by intersymbol interference and additive Gaussian noise. The detector is simple in structure, consisting of a whitened matched filter and two variable thresholds for each symbol to be detected. The detector will make decisions on some,

An integrated approach to Archaeology: From the Fieldwork to Virtual Reality Systems

The visualisation of an archaeological landscape passes through its representation, interpretation and reconstruction. Its various and complex aspects can be described just through an integrated approach of disciplines, data and technologies. Two directions have been undertaken by our research team: a narrative approach and a geographical-spatial one. The narrative approach to cultural data is foc

Homogenization of the Maxwell equations in an anisotropic material

This paper contains an overview of the homogenization of anisotropic materials at fixed frequency using the concept of two-scaled convergence. The homogenized electric and magnetic parameters, the relative permittivity and the relative permeability, respectively, are found by suitable averages of the solution of a local problem in the unit cell. A comparison between the exact homogenization method