18,714 research outputs found
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Improving interoperability in distributed and physical union catalogues through co-ordination of cataloguing and indexing policies : report for work package B of the JISC CC-interop project
Full text linkThis report addresses section 7.2.4 (Guidelines and Strategy for Cataloguing and Indexing Standards) of the CC-interop project plan and fulfills deliverable B3 of work
package B
Conversores utilizando células de comutação de quatro estados
Full text linkTese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.O presente trabalho versa sobre conversores estáticos baseados em uma célula de comutação de quatro estados. Esta célula é formada por três interruptores, três diodos e um transformador trifásico conectado em . O comando dos interruptores é defasado em 120 , fazendo com que os conversores baseados nesta célula tenham três regiões de operação dadas em função da razão cíclica. A partir da célula de comutação proposta foram gerados os seis conversores CC-CC básicos e conversores CC-CA meia-ponte e ponte completa. Os conversores CC-CC buck, boost e buck-boost foram analisados em todas as regiões de operação, tanto no modo de condução contínuo, quanto no descontínuo. Para estas situações, foram mostradas as etapas de operação, as principais formas de onda, o ganho estático, a característica de saída, as ondulações e os filtros de entrada e saída, e ainda resultados experimentais e/ou de simulação. Foram estudados conversores CC-CA meia-ponte baseados nas células de comutação de três e quatro estados. Para os dois casos, realizou-se a análise teórica para o modo de condução contínuo, o estudo da modulação PWM senoidal e do filtro empregado, bem como se implementou as estruturas. O conversor CC-CA meia-ponte apresenta tensão de saída de três níveis quando se utiliza a célula de três estados e, de quatro níveis quando se utiliza a célula de quatro estados. Como características gerais dos conversores baseados na célula de comutação de quatro estados pode-se destacar que a freqüência nos elementos dos filtros é três vezes maior que a freqüência de comutação, e que a tensão e/ou a corrente sobre estes elementos é um terço da que estariam submetidos nos conversores clássicos. Desse modo, ao utilizar a célula de comutação de quatro estados obtém-se uma significativa redução dos filtros, reduzindo peso e volume, além de possibilitar a melhora da resposta dinâmica
jDHBenelux Author Template
No full textThis repository contains the latest official GitHub hosted versions of the LaTeX template that authors are required to use when they finalize their contribtions to the DH Benelux Journal. The repository synchronises with the corresponding easy-to-use and well-documented Overleaf Template that provides authors with a low threshold environment for writing LaTeX – but can be used with any LaTeX compiler.
About this Release: Apart from some minor changes to the .cls, v2.0 introduces a number of new files to improve open source development with git and GitHub, including a README, a CC-BY 4.0 License, and a .gitignore file. It also prepares the repository for synchronisation with Zenodo, to improve sustainability.
Full Changelog: https://github.com/DHBenelux/jDHBenelux-author-template/compare/v1.1...v2.
Scalar soliton quantization with generic moduli
Full text linkThis article is distributed under the terms of the Creative Commons
Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credArticle funded by SCOAP3. CP is
a Royal Society Research Fellow and partly supported by the U.S. Department of Energy
under grants DOE-SC0010008, DOE-ARRA-SC0003883 and DOE-DE-SC0007897. ABR
is supported by the Mitchell Family Foundation. We would like to thank the Mitchell
Institute at Texas A&M and the NHETC at Rutgers University respectively for hospitality
during the course of this work. We would also like to acknowledge the Aspen Center
for Physics and NSF grant 1066293 for a stimulating research environment which led to
questions addressed in this paper
Electrodeposition of CdSe on nanopatterned pillar arrays for photonic and photovoltaic applications
No full textThis work investigates the electrodeposition of CdSe photonic nanostructures into two dimensional (2D) resist templates generated by X-ray
lithography. This templated electrolytic infiltration process is particularly interesting for photonic and photovoltaic applications. Both current and
voltage controlled electrochemical depositions have been performed to infiltrate CdSe onto the 2D templates. Followed by the removal of the
template, triangular arrays of CdSe pillars or networks with more than 1 μm in height were obtained. The detailed studies of deposition parameters
such as applied voltage, current density, deposition time, concentrations of electrolytes and temperatures were carried out to determine the optimum
conditions to obtain high quality 2D CdSe photonic crystals (PhCs). The full optical and structural characterization of the CdSe nanostructures
showed that the CdSe films prepared have a cubic structure with nanometer grain size. Optical absorption studies reveal a bandgap of 2.1 eV for the
thin film grown CdSe, blue-shifted from the characteristic 1.7 eV of bulk CdSe, resulting from size quantization effect. Preliminary optical
characterization by a micro-reflectance technique is performed in order to assess the performance of the fabricated samples as 2D PhCs
Vertebral compression fractures: a review of current management and multimodal therapy
No full textCyrus C Wong, Matthew J McGirt Vanderbilt University Medical Center, Nashville, TN, USA Abstract: Vertebral compression fractures are a prevalent disease affecting osteoporotic patients. When symptomatic, they cause significant pain and loss of function and have a high public health impact. In this paper we outline the diagnosis and management of these patients, with evidence-based review of treatment outcomes for the various therapeutic options. Diagnosis involves a clinical history focusing on the nature of the patient's pain as well as various imaging studies. Management is multimodal in nature and starts with conservative therapy consisting of analgesic medication, medication for osteoporosis, physical therapy, and bracing. Patients who are refractory to conservative management may be candidates for vertebral augmentation through either vertebroplasty or kyphoplasty. Keywords: vertebral compression fractures, osteoporosis, bracing, vertebroplasty, kyphoplast
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