Search results for "Dean"
showing 10 items of 278 documents
Geostatistical computing of acoustic maps in the presence of barriers
2009
Acoustic maps are the main diagnostic tools used by authorities for addressing the growing problem of urban acoustic contamination. Geostatistics models phenomena with spatial variation, but restricted to homogeneous prediction regions. The presence of barriers such as buildings introduces discontinuities in prediction areas. In this paper we investigate how to incorporate information of a geographical nature into the process of geostatistical prediction. In addition, we study the use of a Cost-Based distance to quantify the correlation between locations.
Tietojoukkojen anonymisointi ja jälleentunnistaminen
2016
Nykyään ihmisistä kerätään ja tallentuu massiivisia määriä henkilökohtaista dataa, mutta kyseisen datan yksityisyydensuojasta ja turvallisuudesta ei aina voida olla täysin varmoja. Kun ihmisten henkilökohtaisia tietoja, kuten sairaushistoriaa tai hoitotietoja, julkaistaan esimerkiksi tutkimuskäyttöön, tulee tiedot anonymisoida riittävällä tavalla eli käsitellä siten, ettei yksittäisiä henkilöitä kyetä tunnistamaan tiedoista. Vaikka anonymisointitekniikoita on useita ja ne voivat olla tehokkaita, eivät ne ole täydellisiä: joskus anonymisointi voi pettää ja ihmisten mahdollisesti arkaluontoisiakin tietoja voi tulla julki ja päätyä vääriin käsiin. Anonymisoinnin pettäminen voi johtua joko ihmi…
A principled approach to network-based classification and data representation
2013
Measures of similarity are fundamental in pattern recognition and data mining. Typically the Euclidean metric is used in this context, weighting all variables equally and therefore assuming equal relevance, which is very rare in real applications. In contrast, given an estimate of a conditional density function, the Fisher information calculated in primary data space implicitly measures the relevance of variables in a principled way by reference to auxiliary data such as class labels. This paper proposes a framework that uses a distance metric based on Fisher information to construct similarity networks that achieve a more informative and principled representation of data. The framework ena…
Evidencialidad indirecta en aimara y en el español de La Paz. Un estudio semántico-pragmático de textos orales
2017
This study investigates the expression of the indirect evidential subdomain in two languages in contact, i.e. the northern variety of Central Aymara and the variety of Spanish spoken in La Paz (Bolivia). For this aim, the study uses first-hand data collected in La Paz and El Alto (Bolivia) during 2014 and 2015. Data was elicited through: the “Family Problems Picture” task (San Roque et al. 2012), formulated by the members of the Max Planck Institute for Psycholinguistics and created specifically for the activation of cognitive categories such as evidentiality and mirativity; the “Pear Story” designed for Wallace Chafe, professor at the University of California, to collect narrative texts th…
Video display terminal use and dry eye: preventive measures and future perspectives
2022
Background: Dry eye disease (DED) is a common cause of ocular pain and discomfort. Dry eye disease (DED) stems from a loss-of-tear film homeostasis and is frequently seen in video display terminal (VDT) users. Video display terminal (VDT) use reduces blink rates and increases incomplete blinks, leading to tear film instability and ocular inflammation, promoting DED. Purpose: To assess and evaluate the methods for preventing VDT-associated DED and ocular discomfort. Methods: Studies were found using PubMed and Embase with the search terms: (digital visual terminal* OR computer use OR screen use OR smartphone OR display OR visual display terminal* OR computer vision syndrome OR tablet OR phon…
Generation of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa
2014
Abstract We report zircon ages, Hf-in-zircon isotopes as well as whole-rock geochemistry and Hf–Nd isotopic systematics for Palaeoarchaean grey gneisses of the Ancient Gneiss Complex of Swaziland, the oldest components of the Kaapvaal craton, southern Africa. The Hf-in-zircon isotopic compositions in these compositionally heterogeneous, multicomponent, migmatitic gneisses are highly variable, even in the oldest zircons dating back to 3.66 Ga, suggesting growth of zircon from melts representing a mix of juvenile and anatectic material derived from differentiated continental crust of Eoarchean to late Hadean age. In contrast, the initial Nd and Hf whole-rock isotopic compositions are frequent…
Intersektionaaliset toverit : Jodi Deanin poliittisesta ajattelusta
2021
Quechua influence in the Andean Spanish in Cuentos y leyendas populares de la Argentina
2017
En la actualidad, no podemos obviar la existencia de un español con rasgos indígenas en Hispanoamérica. En particular, en Argentina encontramos el denominado Español andino en el norte del país, en concreto en el noroeste argentino. En esta zona observamos el contacto entre el español de Argentina y el quechua. Aunque está demostrado el contacto indígena del español en esta zona, todavía se discute hasta qué punto existe esa influencia en aspectos que vayan más allá del léxico. Por ello, en este trabajo vamos, en primer lugar, a situar geográficamente esta variante del español indígena, para después poder investigar en qué niveles lingüísticos hay influencia del quechua y, finalmente, anali…
Väitöskirjojen lähdeluetteloiden kertomaa -sarja. Osa 7: neljä bio- ja ympäristötieteiden väitöskirjaa
2014
Geometric Aspects of Thermodynamics
2016
This chapter deals with mathematical aspects of thermodynamics most of which will be seen to be primarily of geometrical nature. Starting with a short excursion to differentiable manifolds we summarize the properties of functions, of vector fields and of one-forms on thermodynamic manifolds. This summary centers on exterior forms over Euclidean spaces and the corresponding differential calculus. In particular, one-forms provide useful tools for the analysis of thermodynamics. A theorem by Caratheodory is developed which is closely related to the second law of thermodynamics. The chapter closes with a discussion of systems which depend on two variables and for which there is an interesting a…