2,393 research outputs found
Intentionality versus Constructive Empiricism
Get PDFBy focussing on the intentional character of observation in science, we argue that Constructive Empiricism – B.C. van Fraassen’s much debated and explored view of science – is inconsistent. We then argue there are at least two ways out of our Inconsistency Argument, one of which is more easily to square with Constructive Empiricism than the other
Circumveiloped by Obscuritads. The nature of interpretation in quantum mechanics, hermeneutic circles and physical reality, with cameos of James Joyce and Jacques Derrida
Get PDFThe quest for finding the right interpretation of Quantum Mechanics (QM) is as old as QM and still has not ended, and may never end. The question what an interpretation of QM is has hardly ever been raised explicitly, let alone answered. We raise it and answer it. Then the quest for the right interpretation can continue self-consciously, for we then know exactly what we are after. We present a list of minimal requirements that something has to meet in order to qualify as an interpretation of QM. We also raise, as a side issue, the question how the discourse on the interpretation of QM relates to hermeneutics in Continental Philosophy
Over de elektrodynamika van bewegende lichamen
No full textVertaling van "Over de Elektrodynamika van
Bewegende Lichamen" van A. Einstein door F.A. Mulle
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
On Witness-Discernibility of Elementary Particles
Get PDFIn the context of discussions about the nature of ‘identical particles’ and the status of Leibniz’s Principle of the Identity of Indiscernibles in Quantum Mechanics, a novel kind of physical discernibility has recently been proposed, which we call witness-discernibility. We inquire into how witness-discernibility relates to known kinds of discernibility. Our conclusion will be that for a wide variety of cases, including the intended quantum-mechanical ones, witness- discernibility collapses extensionally to absolute discernibility, that is, to discern- ibility by properties
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
Structuren in de filosofie van de wetenschap
Get PDFDeze masterthesis gaat over het de vraag wat het karakter van een wetenschappelijke theorie
is. Tevens wordt onderzocht wat een theorie ons vertelt over de werkelijkheid. Er zijn in de
wetenschapsfilosofie drie stromingen die een antwoord formuleren op de vraag wat het
karakter van een theorie is. De syntactici stellen de logica centraal en hun kennis van de
werkelijkheid baseren ze op het empirisme (onze kennisbron is de waarneming). De
semantici vormen de tweede groep, zij verdedigen het standpunt dat een theorie uit een
collectie modellen bestaat, waarbij een model opgevat worden als een wiskundige structuur.
Het uitgangspunt van kennis bij deze visie is naast het empirisme ook het realisme (de termen
in de beweerzinnen verwijzen naar entiteiten). De derde categorie die een metatheorie
beschrijft is de structuur-visie van Muller. Dit is eigenlijk een soort synthese van de andere
twee opvattingen. In de structuur-visie wordt gezegd dat de werkelijkheid bestaat uit structuur
(d.i. structuralisme). Voorts worden kritieken op de verschillende visies besproken en geeft de
auteur zijn voorkeur aan de structuur-visie
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