1,724,795 research outputs found
v Table of Contents
No full textSecond Supervisor Prof. Dr. Alireza Tourani-Rad ii to my MOTHER and FATHER with love iii band für die Deutsche Wissenschaft ” for financial support during three years ’ period. The scholarship allowed me to concentrate on research and thesis preparation, and as a result i
Time-Domain Model of Dispersive Transmission Line
No full textOF THE MASTER'S THESIS Author: Anu Lehtovuori Name of the thesis: Time-domain model of dispersive transmission line Date: May 31, 2000 Number of pages: 61 Department: Electrical and Communications Engineering Professorship: Circuit Theory Supervisor: Prof. Martti Valtonen The simulation of lossy and dispersive transmission lines has become an essential part of the design process. On the other hand, their accurate and e#cient simulation in the time domain is still a problem
Transport and manipulation of laser driven proton beams for diagnostics and applications
Full text linkThe aim of this doctoral thesis is to study the transport and the manipulation of laser driven proton beams for both diagnostics and applications.
This work is mainly separated into two parts: (1) a theoretical study of a
new spectrometer for laser ion diagnostics and (2) a detailed study of a laser
Particle Induced X-Ray Emission (PIXE) beamline for material science ap plications.
It also includes part of the experimental results related to the participation in August 2016 in the TITAN experimental campaign in Livermore, California, and the participation in the first trimester of 2020 in the experimental
campaign at Extreme Light infrastructure Attosecond Light Pulse Source
(ELI-ALPS) research center in Szeged, Hungary.
A better knowledge of the source of the laser-generated protons is translated
in being able to “control” and increase the understanding of the evolution of
the acceleration process at the beginning, whereas developing a customized
transport beamline is translated in increasing the “control” of the final proton parameters required for a specific application
Shape switchable azo macrocycles
Full text linkThe present thesis is organized in three main chapters. The first section discusses a research project for the integration of azobenzene motives as a functional unit in macrocyclic molecular structures. The optically addressable switching units give access to two conformations with large differences in exterior form. Due to the rigid design with a m�terphenyl backbone and the integration of two azo units a considerable stabilization of the thermodynamically less favored cis�isomer is obtained.
In a second project the modification of platinum electrodes with different functional molecules, in order to obtain tailor made surfaces is investigated. By electrochemical grafting the electrodes with a suitable diazonium salt, an organic coated platinum electrode exposing iodoaryls is obtained. Subsequent Sonogashira cross-coupling chemistry with tailor made acetylene molecules allows substituting the exposed iodines with various functional groups. The new technique is improved in order to introduce a wide range of functional groups onto surfaces with a high surface coverage of functional subunits.
In a last project a bridged biphenyl as a novel molecular switch and memory device based on “mechanical” motion in a molecular biphenylic structure was synthesized. To alter the transport properties by an external stimulus, such as light, an azobenzene derivative as a bistable molecular subunit with state dependent length as the bridging system was integrated
The Italian Monetary Trasmission Mechanism: a small stylised model appraisal. Master of Science in Economics, University of Warwick, UK, Dissertation. Supervisor: Prof. Ken Wallis
No full textMaster of Science in Economics, University of Warwick, UK, Dissertation. Supervisor: Prof. Ken Walli
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Diachronical Text Classification A study of text properties and their changes over time
No full textI would like to take this opportunity to thank several people who have enabled me to prepare, start, continue and finish this thesis. These people are, of course, my supervisor Prof. Dr. Ing. John Nerbonne, who allowed me to start this project, which deals with a topic I feel very passionate about. I thank him for his clear guidance, hands-on approach, tips and pointers in addition to forcing me to work in a more structured manner than I sometimes felt I was able to; I learned some valuable lessons. Dr. Carl Vogel, the second reader and my supervisor at Trinity College, has also been instrumental in my learning to look more critical at my own work. Carl, I look forward to the rest of the time we can work together. On a more personal level, several people have influenced and supported me in very different and positive ways as well. So, Natasja, Fred, Tonny, Henk, Alice, David
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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