cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The widespread occurence of water vapor in the circumstellar envelopes of carbon-rich AGB stars: first results from a survey with Herschel/HIFI
Creators: name: Neufeld, D. A.
name: González-Alfonso, E.
name: Melnick, G.
name: Szczerba, R.
name: Schmidt, M.
name: Decin, L.
name: Alcolea, J.
name: de Koter, A.
name: Schöier, F. L.
name: Bujarrabal, V.
name: Cernicharo, J.
name: Dominik, C.
name: Justtanont, K.
name: Marston, A. P.
name: Menten, K.
name: Olofsson, H.
name: Planesas, P.
name: Teyssier, D.
name: Waters, L. B. F. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the preliminary results of a survey for water vapor in a sample of eight C stars with large mid-IR continuum fluxes: V384 Per, CIT 6, V Hya, Y CVn, IRAS 15194-5115, V Cyg, S Cep, and IRC+40540. This survey, performed using the HIFI instrument on board the Herschel Space Observatory, entailed observations of the lowest transitions of both ortho- and para-water: the 556.936 GHz 1(10)-1(01) and 1113.343 GHz 1(11)-0(00) transitions, respectively. Water vapor was unequivocally detected in all eight of the target stars. Prior to this survey, IRC+10216 was the only carbon-rich AGB star from which thermal water emissions had been discovered, in that case with the use of the Submillimeter Wave Astronomy Satellite (SWAS). Our results indicate that IRC+10216 is not unusual, except insofar as its proximity to Earth leads to a large line flux that was detectable with SWAS. The water spectral line widths are typically similar to those of CO rotational lines, arguing against the vaporization of a Kuiper belt analog (Ford & Neufeld 2001) being the general explanation for water vapor in carbon-rich AGB stars. There is no apparent correlation between the ratio of the integrated water line fluxes to the 6.3 micron continuum flux - a ratio which measures the water outflow rate - and the total mass-loss rate for the stars in our sample.
description: Accepted for publication in the Astrophysical Journal Letters
From Correlators to Wilson Loops in Chern-Simons Matter Theories
Creators: name: Bianchi, Marco S.
name: Leoni, Matias
name: Mauri, Andrea
name: Penati, Silvia
name: Ratti, CarloAlberto
name: Santambrogio, Alberto
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study n-point correlation functions for chiral primary operators in three dimensional supersymmetric Chern-Simons matter theories. Our analysis is carried on in N=2 superspace and covers N=2,3 supersymmetric CFT's, the N=6 ABJM and the N=8 BLG models. In the limit where the positions of adjacent operators become light-like, we find that the one-loop n-point correlator divided by its tree level expression coincides with a light-like n-polygon Wilson loop. Remarkably, the result can be simply expressed as a linear combination of five dimensional two-mass easy boxes. We manage to evaluate the integrals analytically and find a vanishing result, in agreement with previous findings for Wilson loops.
description: 32 pages, 6 figures, JHEP3
Minimization of Handoff Failure Probability for Next-Generation Wireless Systems
Creators: name: Sarddar, Debabrata
name: Jana, Tapas
name: Saha, Souvik Kumar
name: Banerjee, Joydeep
name: Biswas, Utpal
name: Naskar, M. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: During the past few years, advances in mobile communication theory have enabled the development and deployment of different wireless technologies, complementary to each other. Hence, their integration can realize a unified wireless system that has the best features of the individual networks. Next-Generation Wireless Systems (NGWS) integrate different wireless systems, each of which is optimized for some specific services and coverage area to provide ubiquitous communications to the mobile users. In this paper, we propose to enhance the handoff performance of mobile IP in wireless IP networks by reducing the false handoff probability in the NGWS handoff management protocol. Based on the information of false handoff probability, we analyze its effect on mobile speed and handoff signaling delay.
description: 16 Pages
Three-Point Correlation Functions of SDSS Galaxies: Constraining Galaxy-Mass Bias
Creators: name: McBride, Cameron K.
name: Connolly, Andrew J.
name: Gardner, Jeffrey P.
name: Scranton, Ryan
name: Scoccimarro, Roman
name: Berlind, Andreas A.
name: Marin, Felipe
name: Schneider, Donald P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We constrain the linear and quadratic bias parameters from the configuration dependence of the three-point correlation function (3PCF) in both redshift and projected space, utilizing measurements of spectroscopic galaxies in the Sloan Digital Sky Survey (SDSS) Main Galaxy Sample. We show that bright galaxies (M_r < -21.5) are biased tracers of mass, measured at a significance of 4.5 sigma in redshift space and 2.5 sigma in projected space by using a thorough error analysis in the quasi-linear regime (9-27 Mpc/h). Measurements on a fainter galaxy sample are consistent with an unbiased model. We demonstrate that a linear bias model appears sufficient to explain the galaxy-mass bias of our samples, although a model using both linear and quadratic terms results in a better fit. In contrast, the bias values obtained from the linear model appear in better agreement with the data by inspection of the relative bias, and yield implied values of sigma_8 that are more consistent with current constraints. We investigate the covariance of the 3PCF, which itself is a measurement of galaxy clustering. We assess the accuracy of our error estimates by comparing results from mock galaxy catalogs to jackknife re-sampling methods. We identify significant differences in the structure of the covariance. However, the impact of these discrepancies appears to be mitigated by an eigenmode analysis that can account for the noisy, unresolved modes. Our results demonstrate that using this technique is sufficient to remove potential systematics even when using less-than-ideal methods to estimate errors.
description: 18 pages, 17 figures. Submitted to ApJ
Seminário Internacional «História dos Arquivos e da Informação: um campo de investigação». Lisboa e Vila Real, 8 e 9 de Junho de 2012
Creators: name: Gonçalves, Paulo
Publisher: name: Lusitania Sacra
Year: 2012

description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Graphical prediction of quantum interference-induced transmission nodes in functionalized organic molecules
Creators: name: Markussen, Troels
name: Stadler, Robert
name: Thygesen, Kristian S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantum interference (QI) in molecular transport junctions can lead to dramatic reductions of the electron transmission at certain energies. In a recent work [Markussen et al., Nano Lett. 2010, 10, 4260] we showed how the presence of such transmission nodes near the Fermi energy can be predicted solely from the structure of a conjugated molecule when the energies of the atomic p_z orbitals do not vary too much. Here we relax the assumption of equal on-site energies and generalize the graphical scheme to molecules containing different atomic species. We use this diagrammatic scheme together with tight-binding and density functional theory calculations to investigate QI in linear molecular chains and aromatic molecules with different side groups. For the molecular chains we find a linear relation between the position of the transmission nodes and the side group pi orbital energy. In contrast, the transmission functions of functionalized aromatic molecules generally display a rather complex nodal structure due to the interplay between molecular topology and the energy of the side group orbital.
description: 7 pages
Red blood cell trans-dispersion revealing biophysical signatures in malaria parasitism
Creators: name: Santoso, Aline Teresa
Publisher: name: University of British Columbia
Year: 2015

description: Red blood cell (RBC) deformability plays an important role in the pathogenesis of Plasmodium falciparum malaria, and therefore could potentially enable simple, rapid, and reagent-free biophysical assays. A key challenge, however, is that pathological cells often only represent a small fraction of the sample, which requires testing a large number of individual cells to enable their detection. Additionally, it is often desirable to perform multiple assays simultaneously, which require technologies capable of parallelized analysis. Traditional technologies for analyzing RBC deformability are limited by their experimental difficulty, extensive instrumentation requirements, as well as their lack of throughput and parallelizability. Here, a new microfluidic mechanism called trans-dispersion is developed to address these issues, enabling a high-throughput and parallelized analysis of RBC deformability. The trans-dispersion mechanism transports single RBCs through a series of constrictions in a microfluidic channel, where their transit speed is a function of their deformability. This process is analogous to gel-electrophoresis, where the migration speed of molecules depends on their length. To ensure a sensitive and consistent measurement, the geometry of the constriction is sized such that the transiting cell forms a temporary seal with each constriction while supporting microchannels ensure consistent forces are applied to each deformation channel. After undergoing repeated deformations, the final position of each RBC, indicating its deformability, is determined using simple bright-field microscopy and automated image processing, and thereby resulting in a repeatable, high-throughput and parallelized process. The performance of this mechanism was evaluated by detecting changes in RBC deformability resulting from chemical degradation, malaria parasitism and exposure to anti-malarial drugs. This device can distinguish variation in RBC deformability following chemical degradation using small concentrations (0.0005%) of glutaraldehyde (GTA). P. falciparum-infected RBCs (iRBCs) show distinct deformability curves compared to the uninfected controls. The linear correlation between the parasitemia and the percentage of non-transiting cells could potentially be used to infer the parasitemia of clinical specimen. Furthermore, this device was able to simultaneously assess the efficacy of several antimalarial compounds; showing that rigidification of P. falciparum-iRBCs can potentially be used to evaluate antimalarial drug efficacy, as well as serve as a functional screen for new antimalarials.
Application of stable isotope tracers to examine phenylalanine metabolism and protein requirements in children with phenylketonuria (pku)
Creators: name: Turki, Abrar Mohammed
Publisher: name: University of British Columbia
Year: 2015

description: Phenylketonuria (PKU) is an inherited inborn error of phenylalanine (PHE) metabolism caused by deficiency of hepatic enzyme phenylalanine hydroxylase (PAH). Therefore, PHE accumulates in plasma leading to mental retardation and developmental delay. Kuvan® (Sapropterin dihydrochloride), a synthetic form of tetrahydrobiopterin (BH₄), has been shown to reduce plasma PHE levels in PKU, but not all patients respond to sapropterin treatment. The major mode of treatment remains nutritional management with dietary restriction of PHE and provision of sufficient protein. The dietary protein requirement in children with PKU remains unknown. Therefore the objectives of the current thesis were: 1) to identify sapropterin responsiveness in PKU children using a minimally invasive L-[1-¹³C] phenylalanine breath test (¹³C-PBT), and 2) to determine protein requirements in PKU children using the indicator amino acid oxidation (IAAO) technique. Experiment 1- Nine children with PKU (5-18y) underwent ¹³C-PBT tracer protocols twice, once before and once after 1-2 weeks of sapropterin therapy. ¹³CO₂ was measured using isotope ratio mass spectrometer (IRMS). The study protocol was tested in healthy children (n= 6) as proof of principle. Experiment 2- Four PKU children (5-18y) were recruited to participate in test protein intakes (ranging from deficiency to excess 0.2 – 3.2 g/kg/d) with the IAAO protocol using L-[1-¹³C] leucine, followed by collection of breath and urine samples over 8 hours. Results 1- ¹³CO₂ productions in all children with PKU pre-sapropterin treatment were low, except in one child (PKU04). Five children with PKU showed a significantly higher peak enrichment after sapropterin treatment at 20min. Three PKU children had no change in ¹³CO₂ production post sapropterin therapy. Results 2- The mean protein requirement, identified using 2-phase linear regression analysis was determined to be 1.85 g/kg/d. This result is significantly higher than the most recent PKU recommendations (2014) (1.14 – 1.33g/kg/d, based on 120-140% above current recommended dietary allowance RDA). These findings show that the ¹³C-PBT can be a minimally invasive method to examine in vivo PHE metabolism in PKU children responsive to sapropterin therapy. Also, current recommendations for optimal protein intake may be underestimated.
VI Seminário Internacional Luso‑Brasileiro: «Os Franciscanos no Mundo Português III. O Legado Franciscano». Ponte de Lima, 4 a 6 de outubro de 2012
Creators: name: Ferreira-Alves, Natália Marinho
Publisher: name: Lusitania Sacra
Year: 2012

description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Heteronuclear Decoupling by Multiple Rotating Frame Technique
Creators: name: Arthanari, Haribabu
name: Wagner, Gerhard
name: Khaneja, Navin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The paper describes the multiple rotating frame technique for designing modulated rf-fields, that perform broadband heteronuclear decoupling in solution NMR spectroscopy. The decoupling is understood by performing a sequence of coordinate transformations, each of which demodulates a component of the Rf-field to a static component, that progressively averages the chemical shift and dipolar interaction. We show that by increasing the number of modulations in the decoupling field, the ratio of dispersion in the chemical shift to the strength of the rf-field is successively reduced in progressive frames. The known decoupling methods like continuous wave decoupling, TPPM etc, are special cases of this method and their performance improves by adding additional modulations in the decoupling field. The technique is also expected to find use in designing decoupling pulse sequences in Solid State NMR spectroscopy and design of various excitation, inversion and mixing sequences.
description: 18 pages , 5 figures
Security analysis of malicious socialbots on the web
Creators: name: Boshmaf, Yazan
Publisher: name: University of British Columbia
Year: 2015

description: The open nature of the Web, online social networks (OSNs) in particular, makes it possible to design socialbots—automation software that controls fake accounts in a target OSN, and has the ability to perform basic activities similar to those of real users. In the wrong hands, socialbots can be used to infiltrate online communities, build up trust over time, and then engage in various malicious activities. This dissertation presents an in-depth security analysis of malicious socialbots on the Web, OSNs in particular. The analysis focuses on two main goals: (1) to characterize and analyze the vulnerability of OSNs to cyber attacks by malicious socialbots, social infiltration in particular, and (2) to design and evaluate a countermeasure to efficiently and effectively defend against socialbots. To achieve these goals, we first studied social infiltration as an organized campaign operated by a socialbot network (SbN)—a group of programmable socialbots that are coordinated by an attacker in a botnet-like fashion. We implemented a prototypical SbN consisting of 100 socialbots and operated it on Facebook for 8 weeks. Among various findings, we observed that some users are more likely to become victims than others, depending on factors related to their social structure. Moreover, we found that traditional OSN defenses are not effective at identifying automated fake accounts or their social infiltration campaigns. Based on these findings, we designed Íntegro—an infiltration-resilient defense system that helps OSNs detect automated fake accounts via a user ranking scheme. In particular, Íntegro relies on a novel approach that leverages victim classification for robust graph-based fake account detection, with provable security guarantees. We implemented Íntegro on top of widely-used, open-source distributed systems, in which it scaled nearly linearly. We evaluated Íntegro against SybilRank—the state-of-the-art in graph-based fake account detection—using real-world datasets and a large-scale, production-class deployment at Tuenti, the largest OSN in Spain with more than 15 million users. We showed that Íntegro significantly outperforms SybilRank in ranking quality, allowing Tuenti to detect at least 10 times more fake accounts than their current abuse detection system.
Congresso Internacional «Na Ibéria e na Diáspora: Língua e cultura de judeus e mouros». Évora, 5‑6 de novembro de 2012
Creators: name: Tavim, José Alberto Rodrigues Da Silva
Publisher: name: Lusitania Sacra
Year: 2012

description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Plínio Salgado e integralismo: relação franco‑luso‑italiana
Creators: name: Gonçalves, Leandro Pereira
Publisher: name: Lusitania Sacra
Year: 2012

description: Este ensaio tem como objetivo a investigação da trajetória de Plínio Salgado para a formação e o desenvolvimento do integralismo brasileiro. Com matrizes múltiplas, este movimento tinha como propósito a construção de uma doutrina política original. No entanto, a circularidade de ideias do período fez com que Plínio Salgado sofresse influências consideráveis para a formação de seu pensamento, tendo, em Portugal, o exemplo doutrinário, o Integralismo Lusitano: um movimento de cunho nacionalista da direita radical que teve visível formação embasada na precursora do conservadorismo, a Action Française, que, assim como todos os grupos políticos do princípio do século XX, estabeleceu uma resposta prática à teoria proferida pelo Papa Leão XIII, em 1891, através da Rerum Novarum. Com base no conceito de cultura política, o artigo propôe a análise do pensamento do líder do integralismo brasileiro centrada no contexto de influência lusitana e basicamente católica, preceito que o acompanhou por toda a vida.
description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Cotunneling theory of inelastic STM spin spectroscopy
Creators: name: Delgado, F.
name: Fernández-Rossier, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose cotunneling as the microscopic mechanism that makes possible inelastic electron spectroscopy of magnetic atoms in surfaces for a wide range of systems, including single magnetic adatoms, molecules and molecular stacks. We describe electronic transport between the scanning tip and the conducting surface through the magnetic system (MS) with a generalized Anderson model, without making use of effective spin models. Transport and spin dynamics are described with an effective cotunneling Hamiltonian in which the correlations in the magnetic system are calculated exactly and the coupling to the electrodes is included up to second order in the tip-MS and MS-substrate. In the adequate limit our approach is equivalent to the phenomenological Kondo exchange model that successfully describe the experiments . We apply our method to study in detail inelastic transport in two systems, stacks of Cobalt Phthalocyanines and a single Mn atom on Cu$_2$N. Our method accounts both, for the large contribution of the inelastic spin exchange events to the conductance and the observed conductance asymmetry.
description: 12 pages, 6 figures
A questão religiosa em José Luciano de Castro: a lógica do Estado Liberal nas relações com a Igreja
Creators: name: Leal, Manuel M. Cardoso
Publisher: name: Lusitania Sacra
Year: 2012

description: Com uma carreira de mais de 50 anos, José Luciano de Castro (1834‑1914) foi um dos políticos mais representativos do Estado Liberal português, em particular nas relações com a Igreja Católica. A análise das múltiplas intervenções que fez sobre temas eclesiásticos, enquanto jornalista, deputado, alto funcionário, governante e chefe partidário, é o objetivo do presente artigo. Nessas intervenções José Luciano de Castro foi sempre fiel a uma visão regalista, segundo a qual a religião e o clero deviam estar ao serviço do poder legítimo, instruindo os cidadãos nos preceitos da moral e na obediência às leis. José Luciano de Castro era a favor da religião católica como religião oficial do Estado, mas defendeu também a liberdade de consciência, no sentido de permitir o casamento civil ou de permitir aos cidadãos nacionais o culto particular e doméstico já concedido aos estrangeiros, desde que tal liberdade não implicasse a separação da Igreja e do Estado. O conceito de «a Igreja livre no Estado livre» causava‑lhe o receio de ver surgir um forte «partido clerical», à semelhança do que ocorreu em outros países europeus. Já no século XX opôs‑se ao laicismo, apregoado sobretudo pelos republicanos e que em parte contagiou os partidos monárquicos, alegando não querer ferir os interesses da Igreja «onde nascera e desejava morrer».
description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Clarinet ornamentation techniques influenced by the traditional use of an historical instrument : the tárogató
Creators: name: Milosevic, Milan
Publisher: name: University of British Columbia
Year: 2015

description: There is very little literature available related to traditional ornamentation performance conventions from Eastern Europe. This dissertation thus explores the ornamentation performed on the tárogató, a Hungarian historical instrument, as the inspiration for new ornaments to be used both in existing and new compositions for the tárogató and clarinet. As a result of research and study awards received from the University of British Columbia and the British Columbia Arts Council, I conducted fieldwork with Hungarian and neighbouring Romanian and Serbian folk performers in their natural performance environments. Throughout the twentieth century, such performers developed their own variety of music ornamentation and articulation methods on the tárogató related to several different cultural regions of current-day Hungary, Romania, and Serbia. In this dissertation, these traditional ornaments are used as an inspiration to create six new different ornamental models. They can be performed on either the clarinet or tárogató. I begin by outlining the various interpretations of the most similar ornaments to my new models and the symbols used to depict them in related treatises used in Western Europe from the early seventeenth century until modern times. For the purpose of clarity and differentiation from the historical ornamental symbols most commonly used today, I designed a set of six new visual depictions of the ornaments, accompanied by a practical guide to the new side-key and finger-bounce fingerings and the resultant pitch measurements. I conclude with several compositional examples representing my suppositions on the most tasteful ornamental placements within the possible variety of musical contexts of traditional and contemporary origins. Such suppositions are not intended to change the texture or the original composers' suggestions on ornaments; rather, it is my wish to use them to underline and amplify the traditional style in which the piece is to be performed.
Formation of Muslim Elites in British India: Sayyid Ahmad Khan and the Muhammadan Anglo‑Oriental College
Creators: name: Mohomed, Carimo
Publisher: name: Lusitania Sacra
Year: 2012

description: After the Indian Mutiny of 1857‑1858, also known as the Sepoy Revolt or Uprising, and the end of the Mughal Dynasty, India became under the direct rule of the British Government, and there were a considerable number of Muslim political intellectuals who sought to reform and revitalize Islam in India and as a whole. The responses were various and the debates would surpass geographical boundaries, anticipating questions which are relevant even nowadays, like gender relations, new forms of religious institutionalization and the role of religion in politics. The aim of this paper is to analyze the thought of Sayyid Ahmad Khan (1817‑1898) and the educational impacts of his Muhammadan Anglo‑Oriental College, also known as the Aligarh Movement.
description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Complex magnetic behavior and high spin polarization in Fe(3-x)Mn(x)Si alloys
Creators: name: Ležaić, Marjana
name: Mavropoulos, Phivos
name: Blügel, Stefan
name: Ebert, Hubert
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Fe3Si is a ferromagnetic material with possible applications in magnetic tunnel junctions. When doped with Mn, the material shows a complex magnetic behavior, as suggested by older experiments. We employed the Korringa-Kohn-Rostoker (KKR) Green function method within density-functional theory (DFT) in order to study the alloy Fe(3-x)Mn(x)Si, with 0 < x < 1. Chemical disorder is described within the coherent potential approximation (CPA). In agreement with experiment, we find that the Mn atoms align ferromagnetically to the Fe atoms, and that the magnetization and Curie temperature drop with increasing Mn-concentration $x$. The calculated spin polarization P at the Fermi level varies strongly with x, from P=-0.3 at x=0 (ordered Fe3Si) through P=0 at x=0.28, to P=+1 for x>0.75; i.e., at high Mn concentrations the system is half-metallic. We discuss the origin of the trends of magnetic moments, exchange interactions, Curie temperature and the spin polarization.
Strong reality of finite simple groups
Creators: name: Vdovin, E. P.
name: Gal't, A. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20D06, 20E45, 20G41

description: The classification of finite simple strongly real groups is complete. It is easy to see that strong reality for every nonabelian finite simple group is equivalent to the fact that each element can be written as a product of two involutions. We thus obtain a solution to Problem 14.82 from the Kourovka notebook from the classification of finite simple strongly real groups.
An analysis of ecological traits as reproductive barriers between the MacGillivray’s (Geothlypis tolmiei) and Mourning (G. philadelphia) warblers
Creators: name: Porter, Alison Nicole
Publisher: name: University of British Columbia
Year: 2015

description: Speciation in birds is often thought to be influenced by ecological diversification, which may form barriers to reproduction between species. Ecological selection can act as a premating barrier by reducing the chance of interactions between species, or as a postmating barrier if hybrids have ecological traits that are unfavourable. My objective in this study is to understand the role of ecological traits in maintaining isolation between MacGillivray’s (Geothlypis tolmiei) and Mourning warblers (G. philadelphia), which are two songbird species that form a narrow hybrid zone in northeastern British Columbia. I generate ecological niche models for each species to investigate whether the niche might have a role in explaining the location and width of the hybrid zone by comparing niche and range limits, and whether there is evidence for niche divergence. I show that the species have niches that are similar but have diverged in climatic variability and precipitation measures. These differences may partly explain why the niche models predicted that geographic regions within a species’ own range were the most suitable for that species. The contact zone was the only region where both models predicted high suitability, suggesting that hybridization occurs only where conditions are suitable for both species. I also present two analyses of how genotype is related to ecological characteristics in the hybrid zone. I use the niche models to predict the relative suitability of locations where birds occupied breeding territories in the hybrid zone and compared the relative scores among a gradient of hybrid genotypes. At those same hybrid zone territories I measure microhabitat characteristics of territories and conducted a Principal Component Analysis to examine whether there is a relationship between microhabitat of territories with genotype. I found no evidence that genotype was related with ecological traits in the hybrid zone. This suggests that when under the same ecological conditions the two species are ecologically equivalent, and that hybrids likely do not experience a disadvantage in terms of the ecological traits of their breeding territories. Overall, these results suggest that niche divergence likely had only a small role in the diversification between the MacGillivray`s and Mourning warblers.
title: Die Methode der Linienmomente zur konturbasierten Echtzeit- Bildverarbeitung und industrielle Anwendungen
Creators: name: Lambert, Georg
Publisher: name: De Gruyter
Year: 2021

description: Die industrielle Qualitätssicherung mit Bildverarbeitungssystemen stellt hohe, zeitkritische Anforderungen an automatische Inspektionssysteme. Der vorliegende Artikel stellt einen neuartigen Ansatz, basierend auf einer Echtzeit-Konturextraktion und Polygonapproximation mit anschließender schneller Algorithmik zur Verarbeitung der Konturdaten vor. Ausgehend von den bekannten Flächenmomenten wird die Formulierung für Konturen in Form von Linienmomenten vorgenommen. Der Linienmomentenansatz bietet dabei die Möglichkeit, nicht zusammenhängende Konturfragmente ohne geschlossenen Rand als Einheit zu modellieren und bietet damit weitaus mehr Flexibilität als andere konturbasierte Methoden. Auf die schnelle Berechnung der Linienmomente wird eingegangen. Erweiterungen des Linienmomentenansatzes auf verschiedene Momententypen ermöglichen die Berechnung einer Vielzahl von Invarianten bezüglich Translation, Skalierung und Rotation. An zwei Anwendungen wird die Güte der verschiedenen Linienmomenten-Invarianten untersucht und die Erkennungsleistung der Methode herausgestellt.
A formação dos pregadores de missões internas na época contemporânea
Creators: name: Sanches, Acácio
Publisher: name: Lusitania Sacra
Year: 2012

description: Os pregadores de missões internas ou populares são agentes eclesiásticos enviados a uma determinada região do interior do território, onde tratam de desenvolver ações pastorais segundo a metodologia missionária, com o fim de cristianizar o povo e avivar a sua fé. Dadas as características deste género oratório, os missionários eram sujeitos a uma preparação exigente, que compreendia os doze anos de estudos académicos de Humanidades, Filosofia e Teologia, comuns aos outros eclesiásticos, seguidos de um período de formação intelectual e espiritual de cerca de cinco anos. Durante este longo tempo de formação, os pregadores tinham de dar provas da sua capacidade nos campos da eloquência e da teologia bíblica, dogmática e moral. Era‑lhes igualmente exigido que tivessem elevados conhecimentos no campo do Direito Canónico, da História da Igreja e da Teologia Espiritual. Cada pregador criava a sua coleção de sermões, práticas e conferências, que o acompanhava ao longo da sua carreira.
description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Chemotherapeutic decontamination of dental implants colonized by multispecies oral biofilm
Creators: name: Dostie, Sébastien
Publisher: name: University of British Columbia
Year: 2015

description: Objectives: A recent meta-analysis reported that 18.8% of patients treated with dental implants are affected by peri-implantitis. Chemotherapeutic agents are often used during surgical decontamination of the dental implant despite limited evidence to support their efficacy. It is also known that mature biofilms are more resistant to antimicrobial agents. No studies have tested disinfectants on mature multispecies oral biofilms on titanium substrata. The aim of this study is to develop a multispecies oral biofilm implant model and to determine its susceptibility to antimicrobial agents. The null hypothesis is that no chemical agent is more effective than saline rinse to decontaminate sandblasted acid etched (SLA) titanium dental implant. Methods: Collagen-coated SLA titanium discs were inoculated with dispersed dental plaque with minimum bacterial cell concentration of 3.2 × 10⁷ CFU/ml. After 21 days of anaerobic incubation, discs were rinsed with 0.9% NaCl to remove unattached biofilm, and exposed for 2 minutes to tetracycline paste, 1% chlorhexidine (CHX) gel, 35% phosphoric acid gel. Discs were rinsed again to remove the chemical agents. Bacterial counts were quantified from standardized scanning electron micrographs of the implant surface. Disinfectants were compared within each other and with the control groups (rinse and double-rinse). Results: After three weeks, the biofilm thickness on SLA discs was approximately 30 µm and showed the presence of multitude of rod and coccoid organisms. Rinsing the surfaces with 0.9% NaCl removed the majority of the biofilm. However, bacteria persisted in all specimens regardless of the treatment and none of the disinfectants was superior to the saline double-rinse group. CLSM analysis showed that CHX and Etch groups had a statistically significant reduction of viable bacteria within the biofilms, although small. New chemical and peeling-off techniques were also tested but did not remove significantly more bacteria than the double-rinse group. Conclusions: This mature multispecies biofilm model may be useful for the evaluation of decontamination of SLA implant surface. The tested chemical agents and the peeling-off techniques did not improve the decontamination effect when compared with the 0.9% NaCl rinse. CHX and Etch may provide a slight advantage in killing some of the remaining bacteria.
Broadening of the Derivative Discontinuity in Density Functional Theory
Creators: name: Evers, F.
name: Schmitteckert, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We clarify an important aspect of density functional theories, the broadening of the derivative discontinuity (DD) in a quantum system, with fluctuating particle number. Our focus is on a correlated model system, the single level quantum dot in the regime of the Coulomb blockade. We find that the DD-broadening is controlled by the small parameter $Γ/U$, where $Γ$ is the level broadening due to contacting and $U$ is a measure of the charging energy. Our analysis suggests, that Kondoesque fluctuations have a tendency to increase the DD-broadening, in our model by a factor of two.
description: 4 pages, 2 figures
Hybrid asymptotic-numerical analysis of pattern formation problems
Creators: name: Moyles, Iain
Publisher: name: University of British Columbia
Year: 2015

description: In this thesis we present an analysis of the Gierer-Meinhardt model with saturation (GMS) on various curve geometries in ℝ². We derive a boundary fitted coordinate framework which translates an asymptotic two-component differential equation into a single component reaction diffusion equation with singular interface conditions. We create a numerical method that generalizes the solution of such a system to arbitrary two-dimensional curves and show how it extends to other models with singularity properties that are related to the Laplace operator. This numerical method is based on integrating logarithmic singularities which we handle by the method of product integration where logarithmic singularities are handled analytically with numerically interpolated densities. In parallel with the generalized numerical method, we present some analytical solutions to the GMS model on a circular and slightly perturbed circular curve geometry. We see that for the regular circle, saturation leads to a hysteresis effect for two dynamically stable branches of equilibrium radii. For the near circle we show that there are two distinct perturbations, one resulting from the introduction of a angular dependent radius, and one caused by Fourier mode interactions which causes a vertical shift to the solution. We perform a linear stability analysis to the true circle solution and show that there are two classes of eigenvalues leading to breakup or zigzag instabilities. For the breakup instabilities we show that the saturation parameter can completely stabilize perturbations that we show are always unstable without saturation and for the zigzag instabilities we show that the eigenvalues are given by the near circle curve normal velocity. The breakup analysis is based on the reduction of an implicit non-local eigenvalue problem (NLEP) to a root finding problem. We derive conditions for which this eigenvalue problem can be made explicit and use it to analyze a stripe and ring geometry. This formulation allows us to classify certain technical properties of NLEPs such as instability bands and a Hopf bifurcation condition analytically.
La formación del clero contemporáneo en España
Creators: name: Robles Munõz, Cristobal
Publisher: name: Lusitania Sacra
Year: 2012

description: Algunas de las claves para entender la decadencia y la renovacion de la formacion del clero son: el modelo de presencia de la Iglesia en la sociedad, sus alianzas y dependencias respecto al poder, su cercania a la cultura y al pueblo, su percepcion de la situacion religiosa y la decision de abandonar la rutina y poner en marcha nuevas iniciativas. La Santa Sede recibio informacion y propuestas, los operarios diocesanos, pusieron orden en la formacion moral y ellos mismos fueron un modelo de un clero no beneficial. Angel Herrera, a partir de 1933 puso en marcha una Accion Catolica misionera.
description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Effects of a school-based physical activity intervention on adolescent bone strength, structure and density : the Health Promoting Secondary Schools (HPSS) bone health study
Creators: name: Tan, Vina Phei Sean
Publisher: name: University of British Columbia
Year: 2015

description: Physical activity (PA) benefits bone strength in children but little is known of the effects of PA on bone strength in adolescents. In this thesis, my primary aim was to determine the effect of a secondary school based PA intervention on bone strength, structure and density in adolescents. This 8-month cluster, randomized-controlled, whole school-based intervention study had four intervention and five control schools. Participants were 210 Grade 10 students who were 15.3 years old, on average, at baseline. The Health Promoting Secondary Schools (HPSS) intervention was a choice-based model based on self-determination theory that aimed to increase PA, promote healthy eating and reduce screen time in adolescents. I used peripheral quantitative computed tomography (pQCT) to assess bone strength, structure and density at the distal and shaft sites of the tibia and radius. I assessed PA using a validated PA self-report questionnaire and I measured a sub-set of participants’ PA objectively using accelerometry. Part I is a systematic review and narrative synthesis of PA and pediatric bone literature. High-quality randomized-controlled trials (RCTs) with weight-bearing PA increased bone strength in children. Bone structure adaptations in response to PA were more common than adaptations in bone density (RCTs and observational studies). Only one RCT involved adolescents (average age 13.8 years) and studies often overlooked the influence of muscle on bone responses to PA. In Part II, moderate-to-vigorous PA (MVPA), vigorous PA (VPA) and grip strength positively influenced bone strength in boys and girls after controlling for ethnicity, maturity, limb length and muscle mass. Sedentary time (SED) negated the positive influence of MVPA, but not VPA, on bone strength in girls. In Part III, the HPSS intervention did not lead to significant gains in bone strength, structure or density in adolescents. The external factor of a province-wide teacher job action possibly hindered the execution of the HPSS intervention. In summary, MVPA and VPA benefit bone strength in adolescents but further investigations are warranted to determine the effects of SED on bone strength. It remains to be determined the effects of a choice-based intervention on bone strength adaptations in adolescent boys and girls.
Proyectos de formación eclesiástica en México (1833‑1899)
Creators: name: Ugarte, Marta Eugenia García
Publisher: name: Lusitania Sacra
Year: 2012

description: El artículo da cuenta de las dificultades que enfrentó la Iglesia para mantener un alto nivel académico en la formación del clero secular de México de 1833 a 1899. Para responder a esa situación se promovió la fundación del Colegio Pío Latino Americano en Roma (Píolatino) a fin de formar a los sacerdotes más distinguidos de las diversas diócesis de América Latina con un fuerte espíritu de adhesión al pontífice. A finales del siglo, la decisión de la Santa Sede de privilegiar a los egresados del Píolatino en las promociones al episcopado, mientras se marginaba a los formados en México, minó la unidad de la Iglesia. La competencia, rivalidades y celos entre los formados en México y los formados en Roma, impidió el surgimiento de un liderazgo eclesial nacional que sumara los esfuerzos de todos en una misma línea pastoral en el momento en que los tambores de guerras resonaban de nueva cuenta en el país.
description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Lideranças e modernidade: os espaços confessionais como instâncias de formacão
Creators: name: Guasco, Maurilio
Publisher: name: Lusitania Sacra
Year: 2012

description: A criacão dos seminários foi determinada pelo Concílio de Trento, mas a sua fundação enfrentou muitas dificuldades. O facto de os seminários se terem tornado um local de formação da elite política levantou o problema do controlo da autoridade civil sobre os mesmos. São apresentados os exemplos concretos de alguns países, inclusive os atuais lugares de formação da classe dirigente eclesiástica, e em particular a Academia dos Nobres Eclesiasticos de Roma, hoje conhecida como Academia Eclesiastica. Nem todos os futuros diplomatas estudam aqui, mas aqueles que o fazem estão destinados a tornar-se diplomatas da Igreja ou bispos. E também analisada a prevalência de estudos jurídicos sobre outros estudos, assim como as consequências da transformação da classe dirigente para a história da Igreja. Identificam-se como exemplo os casos recentes das conferências episcopais do Brasil e do Peru.
description: Lusitania Sacra, n. 26 (2012): Formação de Lideranças e Modernidade
Random groups arising as graph products
Creators: name: Charney, Ruth
name: Farber, Michael
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: In this paper we study the hyperbolicity properties of a class of random groups arising as graph products associated to random graphs. Recall, that the construction of a graph product is a generalization of the constructions of right-angled Artin and Coxeter groups. We adopt the Erdos - Renyi model of a random graph and find precise threshold functions for the hyperbolicity (or relative hyperbolicity). We aslo study automorphism groups of right-angled Artin groups associated to random graphs. We show that with probability tending to one as $n\to \infty$, random right-angled Artin groups have finite outer automorphism groups, assuming that the probability parameter $p$ is constant and satisfies $0.2929
No science, no democracy : environmental knowledge and scientific activism in Canada
Creators: name: Deutsh, Shoshana
Publisher: name: University of British Columbia
Year: 2015

description: “No Science, No Evidence, No Truth, No Democracy”: this phrase has appeared on signs and has been chanted at protests across Canada since the “Death of Evidence” protests in 2012. It marked the emergence of a number of pro-science organizations that have sought to protect the role of science in Canada’s democracy in the face of substantial changes to science governance in Canada. Arguing against funding cuts to environmental research and libraries, much of the protest has been centred on the emergence of a “wilful ignorance” or “war on science” in Canada. This thesis takes these pro-science activists seriously as part of an emerging social movement working towards changing how federal science is governed and how politics influences its governance. By tracking their modes of resistance, this thesis aims to understand how federal scientists conceive of their role and that of science in democratic governance since the sweeping changes of Bill C-38 and affiliated policies which have been accused of gutting environmental protections and blocking environmental knowledge. I argue that these changes reflect an institutional power shift and have generated a tension between different models of scientific practice within federal institutions. Differing conceptions of scientists as public servants have fuelled the protests, which have focused in particular on the Experimental Lakes Area (ELA), a freshwater institute in Kenora, Ontario, a freshwater research station previously managed by Fisheries and Oceans Canada and now by the International Institute for Sustainable Development. Using the ELA as my case study, I analyze how different conceptions of politics and governance have been articulated using discourse analysis as my primary method of study. Adding to current Science & Technology Studies (STS) discussions on the tension between expertise and democratic decision-making, I question the role of federal governance and perceptions of political interference in producing environmental knowledge.
MUCZNIK, Lúcia Liba [et al.] (coord.) – Dicionário do judaísmo português. Lisboa: Presença, 2009. 582 p.
Creators: name: Corrêa, Emílio
Publisher: name: Lusitania Sacra
Year: 2012

description: Lusitania Sacra, n. 25 (2012): A Expansão do Religioso: Dinâmicas, Idealizações e Expectativas (séculos XVI-XX)
Advances in multistrand composite mooring lines for FOWT, FUTURE FIBRES RIGGING SYSTEMS
Creators: name: Juanjo De La Cuesta
Publisher: name: Zenodo
Year: 2021
Subjects: wind
wind power
wind turbines
floating wind
offshore wind

description: This presentation was part of the EERA JP Wind WORKSHOP on Ongoing research in offshore wind structures (September 16 & 17, 2021, hybrid event in Amsterdam and online).
PINTO, Helena Gonçalves (coord.) – Roteiro iconográfico e devocional: Igreja de S. Roque. Lisboa: Santa Casa da Misericórdia de Lisboa, 2012. 119 p.
Creators: name: Francisco, Elisabete Correia Campos
Publisher: name: Lusitania Sacra
Year: 2012

description: Lusitania Sacra, n. 25 (2012): A Expansão do Religioso: Dinâmicas, Idealizações e Expectativas (séculos XVI-XX)