1,989 research outputs found
Author Identifcation in Short Texts
No full textMost research on author identification considers large texts. Not many research is done on author identification for short texts, while short texts are commonly used since the rise of digital media. The anonymous nature of internet applications offers possibilities to use the internet for illegitimate purposes. In these cases, it can be very useful to be able to predict who the author of a message is. Van der Knaap and Grootjen [28] showed that authors of short texts can be identified using single words (word unigrams)
with Formal Concept Analysis.
In theory, grammatical information can also be used as an indication of the author of the text. Grammatical information can be captured by word bigrams. Word bigrams are pairs of successive words, so they reveal some information on the sentence structure the author used. For this thesis I performed experiments using word bigrams as features for author identification to determine whether performance increases compared to using word unigrams as features. In most languages many grammatical relations within a sentence are between words that are not successive. The DUPIRA parser, a natural language parser for Dutch, produces dependency triplets that represent relations between non successive words, based on the Dutch grammar. I used these triplets as features, either alone or in combination with unigrams or bigrams. People often use smileys when communicating with someone using digital media.
Therefore, I also examined the influence of smileys on author identification.
The messages used for the experiments are obtained from the subsection `Eurovision Songfestival 2010' of the fok.nl message board. With these messages the data files for 7 feature sets were constructed: word unigrams excluding smileys, word unigrams including smileys, word bigrams excluding smileys, word bigrams including smileys, only dependency triplets, triplets+word unigrams, triplets+word bigrams. A support vector machine algorithm (SVM) was used as the classification method. This is a commonly used algorithm for author identification. There are different implementations of SVM. In this thesis SMO, LibSVM and LibLINEAR are compared. The LibLINEAR algorithm gave the best results.
The results revealed that in all conditions the performance is above chance level. So all reveal some information about the author. The performance for the word unigrams including smileys showed the best results, while the performance using the dependency triplets is the lowest. Results also revealed that when smileys are considered the performance increases, so smileys provide additional information about
the author
Polymer multimode waveguide optical and electronic PCB manufacturing
No full textThe paper describes the research in the £1.3 million IeMRC Integrated Optical and Electronic Interconnect PCB Manufacturing (OPCB) Flagship Project in which 8 companies and 3 universities carry out collaborative research and which was formed and is technically led by the author. The consortium’s research is aimed at investigating a range of fabrication techniques, some established and some novel, for fabricating polymer multimode waveguides from several polymers, some formulations of which are being developed within the project. The challenge is to develop low cost waveguide manufacturing techniques compatible with commercial PCB manufacturing and to reduce their alignment cost. The project aims to take the first steps in making this hybrid optical waveguide and electrical copper track printed circuit board disruptive technology widely available by establishing and incorporating waveguide design rules into commercial PCB layout software and transferring the technology for fabricating such boards to a commercial PCB manufacturer. To focus the research the project is designing an optical waveguide backplane to tight realistic constraints, using commercial layout software with the new optical design rules, for a demonstrator into which 4 daughter cards are plugged, each carrying an aggregate of 80 Gb/s data so that each waveguide carries 10 Gb/s
Il problema del fondamento in F.A. Lange
No full textIl contributo di F.A. Lange, autore della nota "Geschichte des Materialismus und Kritik seiner Bedeutung in der Gegenwart", alla ripresa del pensiero kantiano. Centralità della "Kritik der reinen Vernunft" e della sua rivoluzione. La "psychophysische Organisation" alla base dell'attività teoretica.The contribution of Fr. Albert Lange, author of the famous "Geschichte des Materialismus und Kritik seiner Bedeutung in der Gegenwart", to the "zurück zu Kant". The key role of “Kritik der reinen Vernunft” and its revolution. The “psychophysische Organisation” at the base of theoretical activity
Author Correction: Human neutrophils phagocytose and kill Acinetobacter baumannii and A. pittii
No full textAdrián Fernández was omitted from the author list in the original version of this Article. This has been corrected in the PDF and HTML versions of the Article, and in the accompanying Supplementary Information file. The updated Author List now reads: María Lázaro-Díez, Itziar Chapartegui-González, Santiago Redondo-Salvo, Chike Leigh, David Merino, David San Segundo, Adrián Fernández, Jesús Navas, José Manuel Icardo, Félix Acosta, Alain Ocampo-Sosa, Luis Martínez-Martínez & José Ramos-Vivas The Author Contributions section now reads: J.R.V. conceived the experiments, J.R.V and D.S.S. designed the experiments, M.L.D., I.C.G., S.R.S., C.L., D.M., A. F., F.A., A.O.S., J.M.I. and J.R.V. performed the experiments, M.L.D., I.C.G., J.N., F.A., J.M.I. L.M.M. and J.R.V. analyzed the data, A.O.S., D.S.S., J.N., F.A., J.M.I. contributed with reagents/materials/analysis tools, J.R.V. wrote the paper. All authors reviewed the manuscript.1,244,379Q1Q1SCI
Lichtstrahlen aus seinen Briefen an eine Freundin, an Frau von Wolzogen, Schiller, G. Forster und F.A. Wolf /
No full textMode of access: Internet
Stabilisation of a landslide on the M25 highway London's main artery
No full textThis paper describes the lessons learnt in the assessment, stabilization and subsequent monitoring of a landslide, which mobilized over 90,000 m3 of material and threatened to completely close England’s busiest highway, the M25 around London. The wedge shaped slide occurred on the 19th December 2000 and extended some 80m up the slope with a slip surface up to 10 m below the ground surface. Due to the strategic importance of the M25, the design and construction was fast tracked to be completed before the fall rains when further movements would be inevitable. The adopted solution used a combination of 1050 mm diameter augered piles, a deep cutoff trench and counterforts at the toe and was extensively instrumented.The collected data for the winter 2001/02 demonstrates that not only were the remedial works successful in stabilizing the slope but that the proposed design method can accurately predict the bending moments and forces produced in the pile
The Case Against Redistribution: F.A. Hayek on Social Justice
No full textIn this thesis, F.A. Hayek\u27s argument is against social justice is given context, discussed, and evaluated. Hayek was one of the leading voices of libertarian ideology in the Twentieth Century. While Road to Serfdom is his most popular work, Hayek\u27s philosophy is most fully expressed in his three volume set, Law, Legislation and Liberty. His thoughts against social justice are found the in the second volume, entitled The Mirage of Social Justice. It is the conclusion of the author that Hayek\u27s argument against social justice, in the form of redistribution, falls short as it depends on a presupposition that an evolutionary moral and legal process will necessarily end in securing a libertarian style of government. The only possible means of salvaging the argument would to accept inherent and inviolable human rights, which Hayek fundamentally rejects as he claims the Kantian tradition
La función del juez en el pensamiento de F.A. Hayek
No full textThis paper shows the relationship between the due process and the liberal theory of law of Friedrich Hayek. The author highlights the rules of just conduct in contrast of result rules. The author sustains that Hayek’s theory applies not only to substantive law, but also to adjective law. At the same time, he explains the function of judges in a liberal order in contrast to the activist approach. As a conclusion, the author defends that an adversarial system founded in rules of just conduct is vital for a Free Society, in opposition to an inquisitorial system, or a mixture of them.En este artículo se aborda la relación entre debido proceso y la teoría liberal del derecho de F.A. Hayek, con énfasis en las normas de recta conducta en contraposición a las normas de resultado. Se postula que la teoría de Hayek no sólo es aplicable al derecho sustancial, sino que también al derecho procesal. Al mismo tiempo, se explica la misión del juez en un orden liberal y garantista, contraria a la postura activista del juez. Concluyendo que un sistema acusatorio fundado en normas de recta conducta es indispensable para una Sociedad Libre, en oposición a sistemas inquisitivos o mixtos
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