cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Investigation on the Production of Water-Stable, Porous Metal-Organic Materials
Creators: name: Reid, Margaret Elizabeth
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Chemistry--Inorganic
subject: Metal-Organic Framework
subject: Phosphonate
subject: Mg-MOF-74
subject: HKUST-1
subject: Silica
subject: water stability

description: Two mechanisms of increasing the water and structural stability of metal-organic frameworks (MOFs) were investigated. Two carboxylate MOFs, Mg-MOF-74 and HKUST-1, were post-synthetically modified with silica to increase structural stability while retaining the originally high zero-loading heats of adsorption, 65.4 kJ/mol and 32.2 kJ/mol, respectively. The modified materials were characterized by NMR, IR, SEM/EDX, PXRD, TGA, and adsorption of CO2 and N2. The silicated HKUST-1 showed remarkably high water stability, whereas the silicated Mg-MOF-74 did not. A second approach to stability was investigated using a novel phosphonate ligand, 2,7-bis(ethylphosphono)fluorene, yielding hollow microspheres upon hydrothermal reaction with cobalt (II) nitrate. The microspheres were thermally stable to 450°C, and were stable to sonication in water. The mechanism of formation, structure and chemical stability were investigated and will be discussed.
Internal multiple prediction: an application on synthetic data, physical modeling data and field data
Creators: name: Hernandez, Melissa
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: multiples

description: In this work we examined and applied a method of internal multiple prediction based on the inverse scattering series. The internal multiple prediction algorithm predicts and then suppresses all order of internal multiples independent of the subsurface reflectors that generate them. In this thesis we promote a stepped approach to predicting multiples in a given field data set: first, by carrying out synthetic/numerical examples; second by carrying out tests on laboratory physical modeling data; and finally by testing prediction of a field data set suspected to be strongly contaminated with internal multiples. In the synthetic examples we draw conclusions about the central frequency of the seismic wavelet and the optimum choice for parameter epsilon (є). The physical modelling study, in which internal multiples are deliberately generated in order to be predicted, is the first of this kind. The results confirm the synthetic’s study conclusions regarding the estimation of epsilon (є), and motivated the development of a method for optimum estimation of epsilon (є) based on autocorrelation. In the land data study, the prediction allows us to confirm and precisely predict the presence of internal multiples in regions where they were expected.
Das Chaṭṭhasaṅ̇gītipiṭakaṃ
Creators: name: Roock, Andreas
name: Stark-Wild, Sonja
Publisher: name: Masala: Newsletter Virtuelle Fachbibliothek Südasien
Year: 2014

description: Masala: Newsletter Virtuelle Fachbibliothek Südasien, Bd. 9 Nr. 1 (2014)
Existence, stability and oscillation properties of slow decay positive solutions of supercritical elliptic equations with Hardy potential
Creators: name: Moroz, Vitaly
name: Van Schaftingen, Jean
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J61 (Primary) 35B05, 35B33, 35B40 (Secondary)

description: We prove the existence of a family of slow decay positive solutions of a supercritical elliptic equation with Hardy potential in the entire space and study stability and oscillation properties of these solutions. We also establish the existence of a continuum of stable slow decay positive solutions for the relevant exterior Dirichlet problem.
Museus virtuais: a importância da usabilidade na mediação entre o público e o objecto museológico
Creators: name: Muchacho, Rute
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Este paper surge no decorrer de um projecto de investigação em curso pelo CICANT – Centro de Informação, Comunicação, Artes e Novas Tecnologias da Universidade Lusófona de Humanidades e Tecnologias e de uma dissertação de mestrado cujo objecto de estudo se centra na temática dos museus virtuais. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Főhivatalnok a bürokrácia útvesztőiben. Ajn Ali jövedelmeinek alakulása 1593 és 1611 között
Creators: name: Dávid, Géza
name: Howard, Douglas
Publisher: name: Kőrösi Csoma Társaság
Year: 2019

description: Keletkutatás, 2019. ősz ISSN 0133-4778
Multi-parametric Programming for Microgrid Operational Scheduling
Creators: name: Umeozor, Eva Chinedu
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Energy
subject: Engineering--System Science
subject: Engineering--Operations Research
subject: Microgrids
subject: Energy Management
subject: Parameterization
subject: Optimal Scheduling

description: This study presents a multi-parametric programming (MPP) based approach for energy management in microgrids. The algorithm creates operational strategies for efficient and tractable coordination of distributed energy sources in a residential level microgrid. The hybrid energy system comprises of renewable (solar photovoltaic and wind turbine), conventional systems (microturbine and utility grid connection), and battery energy storage system. The overall problem is formulated using multi-parametric mixed-integer linear programming (mp-MILP) via parameterizations of the uncertain coordinates of the wind and solar resources. This results in a bi-level optimization problem, where choice of the parameterization scheme is made at the upper level while system operation decisions are made at the lower level. The mp-MILP formulation leads to significant improvements in uncertainty management, solution quality and computational burden; by easing dependency on meteorological information and avoiding the multiple computational cycles of the traditional online optimization techniques. Results evidence the feasibility and effectiveness of MPP.
Eszkatológia mint propagandaeszköz az Oszmán Birodalomban a 18. század hajnalán. Adalékok Ibrahim Müteferrika polemikus értekezésének értelmezéséhez
Creators: name: Kovács, Nándor Erik
Publisher: name: Kőrösi Csoma Társaság
Year: 2019

description: Keletkutatás, 2019. ősz ISSN 0133-4778
Schopenhauer's Pessimism and Kant's Moral Argument
Creators: name: Reid, Walter Joseph
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Schopenhauer
subject: Kant
subject: Pessimism
subject: After life
subject: Moral Argument
subject: Mortalism

description: In this thesis, I argue that Kant's Moral Argument gives good grounds to reject Schopenhauer's pessimism. I begin by defining pessimism as the view that "life is not choiceworthy," and dispelling some initial objections to it. Having established that pessimism doesn't succumb to obvious objections, I develop three lines of argument that tell in favor of it, each articulated in a chapter of its own that explains how Schopenhauer reconceives the categories of, in order, will, goodness, and death. Schopenhauer’s overall argument moves from will to goodness to death; and in the third and final section of the thesis I demonstrate how Kant's Moral Argument undercuts the crucial assumption about death on which his case for pessimism depends (i.e. mortalism). I conclude by rejecting an evidentialist objection to the Moral Argument, according to which evidence provides the only justifiable grounds for believing in anything, including, crucially, in a just afterlife.
Neu im Regal: Aus der Neuerwerbungsliste der Bibliothek des Südasien-Instituts
Creators: name: Merkel, Nicole
Publisher: name: Masala: Newsletter Virtuelle Fachbibliothek Südasien
Year: 2014

description: Masala: Newsletter Virtuelle Fachbibliothek Südasien, Bd. 9 Nr. 1 (2014)
"Konfliktfaktor Religion? Die Rolle von Religionen in den Konflikten Südasiens" hrsg. von Janet Kursawe und Verena Brenner
Creators: name: Geyer, Robby
Publisher: name: Masala: Newsletter Virtuelle Fachbibliothek Südasien
Year: 2014

description: Masala: Newsletter Virtuelle Fachbibliothek Südasien, Bd. 9 Nr. 1 (2014)
Local models of heterotic flux vacua: spacetime and worldsheet aspects
Creators: name: Carlevaro, Luca
name: Israel, Dan
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We report on some recent progress in understanding heterotic flux compactifications, from a worldsheet perspective mainly. We consider local models consisting in torus fibration over warped Eguchi-Hanson space and non-Kähler resolved conifold geometries. We analyze the supergravity solutions and define a double-scaling limit of the resolved singularities, defined such that the geometry is smooth and weakly coupled. We show that, remarkably, the heterotic solutions admit solvable worldsheet CFT descriptions in this limit. This allows in particular to understand the important role of worldsheet non-perturbative effects.
description: Proceedings from a seminar given during the XVIth European Workshop on String Theory 2010, Madrid, 14--18 June 2010; v2:refs added
Linguagens tecnológicas são resultado da cultura
Creators: name: Cunha, Mágda Rodrigues Da
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: O surgimento de cada nova mídia determina o debate sobre a permanência ou morte dos meios já existentes. Esta tendência poderia ser detectada mesmo antes da comunicação assumir o formato midiático. O desenvolvimento da escrita desvalorizaria a oralidade, a impressão prejudicaria o registro manuscrito, o jornal levaria ao fim do livro e da leitura, além do rádio que terminaria com o jornal, e a televisão com a mídia radiofônica. Já o final do século XX marca o início dos debates sobre uma reacomodação das mídias provocada pelo desenvolvimento da internet. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Exoplanet Science with JWST & Roman: A Journey through Through Space and Time
Creators: name: Grunblatt, Samuel
Publisher: name: Zenodo
Year: 2023
Subjects: Surveys of the Very Nearby Universe

description: 14 years ago, the launch of the NASA Kepler mission revolutionized our understanding of exoplanets in our Galactic neighborhood. 18 months ago, the launch of another NASA mission triggered a similar sea change in exoplanet science. The James Webb Space Telescope is actively transforming our ability to characterize the planet population in our Galactic neighborhood, providing new and unexpected insights into planet compositions and atmospheres that were previously impossible. In the near future, the Roman Space Telescope will extend our knowledge of exoplanets even further, identifying planets in regions of parameter space that are currently incredibly difficult to access. The Roman Galactic Bulge Time Domain Survey will reveal tens to hundreds of thousands of planets and candidates in more distant regions of our Galaxy. Thousands of these planets will be detected at star-planet separations similar to the known Solar System planets, which cannot be probed in large numbers using current facilities, thanks to the wide field NIR capabilities and astrometric precision of Roman. Clues about planet demographics from JWST will better inform yield estimates from Roman and help us to identify the most effective approaches to extend exoplanet science. Together, JWST and Roman will unveil planet demographics across the Milky Way.
How Important is Quality Teaching and Learning within the Community College System and What Supports are Available and Effective in Promoting Quality Teaching?
Creators: name: Itwaru, Sharmaine
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Education--Higher
subject: instructor education pedagogy adult education community college faculty development

description: The interconnection between teaching and learning in higher education has been the subject of academic investigation for some time. However, within the community college context, the efficacy of pedagogically trained instructors on student learning has remained an under-examined area of scholarly research. This study advances greater understanding regarding the importance of quality teaching within the community college system in Ontario and endeavours to explore how institutional policy and practices support or impede the promotion of quality teaching. A mixed methods sequential explanatory design was employed at a Toronto college in order to gauge the perspectives of participants in three sub-groups of the College strata: administrators, instructors, and students. A pragmatic approach was utilised from which multiple methods of data collection (i.e., semi-structured interviews, focus groups, and online questionnaires) were selected to exhaustively address the primary research question. Key findings revealed that formal instructor pedagogical education was perceived by the majority of participants as foundational to effective teaching practice, and that more comprehensive academic development was needed to improve both current practice and student academic achievement. Most instructors and students concurred that learner-centred approaches, both in class and in field placements, led to a deeper level of learning. From an institutional standpoint, participants also believed that college policy and practice were misaligned with respect to promoting quality instruction, and that greater strides towards this end were necessary. This study adds to the current instructor education discourse by providing impetus for institutional change towards the professionalisation of college instructors and also recognises the inextricable tie between instructor education and student learning.
Creating a genomic resource for Grosmannia clavigera
Creators: name: DiGuistini, William Scott
Publisher: name: University of British Columbia
Year: 2010

description: Rapid advances in DNA sequencing have created the possibility for probing deeply into the genomes and transcriptomes of organisms; however, bioinformatic tools for handling these massive quantities of data are changing rapidly. In this thesis I describe the bioinformatic methods and molecular resources developed for studying the ascomycete fungus Grosmannia clavigera (Gc), a lodgepole pine (Pinus contorta) pathogen specifically associated with the Mountain Pine Beetle (MPB), and results from initial analyses using these resources. We have developed genomic resources for Gc including: a) the whole genome sequence, b) expressed sequence tags (ESTs), and c) RNA-seq data. We have annotated the genome using the transcriptome resources (e.g. ESTs and RNA-seq) and computational (gene prediction software) data. In an initial analysis of the Gc genome we focused on aspects important for colonizing the host tree and for tolerance towards conifer defence chemicals. We showed that Gc is heterothallic, and report evidence for repeat-induced point mutation. Gene expression profiling provided insight into mechanisms for Gc’s tolerance towards conifer defence chemicals, specifically oleoresin terpenoids. RNA-seq revealed a substantial antimicrobial stress response of Gc induced by terpenoids, and our data suggests that Gc may reduce the toxicity of these defence chemicals by utilizing them as a carbon source. Terpenoid treatment strongly activated a ~100 kb region of the Gc genome that contains a set of genes that may be important for detoxification of these host defence chemicals. Using a recently developed Gc gene knock-out system, we provide evidence that a PDR-type ABC transporter is important for the successful response of Gc against host terpenoids.
The Relationship Among and Between Social-Cognitive Variables, Peer Victimization, and Anxiety in School Aged Children
Creators: name: Purcell, Victoria
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Educational Psychology
subject: Anxiety
subject: Peer Victmization
subject: Peer perceptions
subject: Social self-efficacy
subject: Social-cognitive variables
subject: School-aged children

description: Internalizing challenges, such as anxiety, have been found to be a one of the many adverse outcomes associated with peer victimization in middle childhood. The current study extends the literature by examining the relationship among and between peer victimization, social cognitive variables (i.e., peer perceptions and social self-efficacy), and anxiety among school aged children and youth aged 12 to 15. Specifically, this study assessed the predictive nature of peer victimization on anxiety symptoms and looked at whether peer perceptions and social self-efficacy were mediators and moderators of this relationship respectively. Participants included 81 school aged children (female: 52, male: 29; M age: 12.78). Results showed that reports of peer victimization predicted the severity of anxious symptoms, and children’s beliefs about their school peers influenced this relationship. Further, there were overall differences between different types of victimization (overt, relational, and reputational) and anxiety symptoms in youth. These results further demonstrate the importance of addressing peer victimization within Canadian schools and this should be considered in the treatment of anxiety among youth.
Possibility of "magic" trapping of three-level system for Rydberg blockade implementation
Creators: name: Morrison, Muir J.
name: Derevianko, Andrei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The Rydberg blockade mechanism has shown noteworthy promise for scalable quantum computation with neutral atoms. Both qubit states and gate-mediating Rydberg state belong to the same optically-trapped atom. The trapping fields, while being essential, induce detrimental decoherence. Here we theoretically demonstrate that this Stark-induced decoherence may be completely removed using powerful concepts of "magic" optical traps. We analyze "magic" trapping of a prototype three-level system: a Rydberg state along with two qubit states: hyperfine states attached to a J=1/2 ground state. Our numerical results show that, while such a "magic" trap for alkali metals would require prohibitively large magnetic fields, the group IIIB metals such as Al are suitable candidates.
description: 5 pages, 3 figures
SAGD Performance with Multiphase Flows: A Mathematical Study
Creators: name: Li, Qingmao
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Petroleum
subject: SAGD

description: Steam Assisted Gravity Drainage (SAGD) is one of the most widely used in-situ thermal recovery methods for bitumen production in Alberta, Canada. In the present work, we investigate the effect of water mobility inside a reservoir on SAGD performance. In particular, the components of heat transfers (i.e. conduction and convection) ahead of a steam chamber are analyzed and formulated by considering steam condensate flow. We develop an unsteady state semi-analytical 2D SAGD model which couples convective and conductive heat transfer mechanisms with multiphase flows. The developed model is capable of predicting steam chamber expansion, oil and water production rates, and also distributions of temperature, fluid saturation and fluid mobility ahead of steam chamber. The result examination illustrates that the convection mechanism enhances heat transfer only in the vicinity of steam chamber edge while maximum oil mobility oil happens a few meters beyond the steam interface.
Masala - Newsletter Virtuelle Fachbibliothek Südasien
Creators: name: Merkel, Nicole
Publisher: name: Masala: Newsletter Virtuelle Fachbibliothek Südasien
Year: 2014

description: Masala: Newsletter Virtuelle Fachbibliothek Südasien, Bd. 9 Nr. 1 (2014)
Atmospheric Carbon Dioxide Leak Detection from Carbon Capture and Storage Sites
Creators: name: Mostafavi Pak, Seyedeh Nasrin
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences
subject: Environmental Sciences
subject: Atmospheric Science
subject: Carbon capture and storage
subject: Air quality measurement
subject: Dispersion modeling
subject: Carbon dioxide and Oxygen measurements

description: Carbon Capture and Storage is one of the proposed technologies to reduce anthropogenic carbon dioxide emissions. One of the concerns about the feasibility and safety of this technology is the possible atmospheric leakage of CO2 from geological storage sites. Leakage may intercept shallow aquifers, surface body waters, and escape to the atmosphere, which can be hazardous to both ecosystems and human health. A system was developed in this study for sampling plumes of CO2 and determining whether they are likely to be from a CO2 storage site. Since atmospheric CO2 levels naturally fluctuate due to photosynthesis, respiration, biomass and fossil fuel combustion, elevations in CO2 concentration do not necessarily represent a leakage. It is possible to differentiate between different sources of CO2 by looking at the ratio of O2 depletion to CO2 elevation of a plume relative to the background air (dO2/dCO2). A gas analysis system was used to measure differentials in CO2 and O2 concentrations for different plume samples relative to background air. The CALPUFF dispersion model was used to estimate the location and maximum concentration levels of CO2 in the atmosphere. Then a CO2 leakage from a storage site was simulated by release of pure CO2 with emission rate of about 100 L/min for seven hours at a measurement site. The dO2/dCO2 of the plume samples were measured relative to background air collected at the site. Measured absolute values of dO2/dCO2 for plume samples from pure CO2 emissions (0.23 - 0.31) were significantly different from the measured values for plume samples from combustion of different types of carbon based fuels (1.06 - 1.97).
Integração de vídeo e multimédia
Creators: name: Almeida, André Valentim
name: Santos, Beatriz Sousa
name: Ferreira, Carlos
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: É inquestionável, nos dias de hoje, a presença vincada do multimédia e das Imagens em Movimento no mundo contemporâneo. Todavia, a anunciada integração do vídeo na matriz do multimédia encontra-se longe do horizonte, prevalecendo, ainda, um desfasamento significativo entre os circuitos audiovisual e multimédia. É, neste contexto, que se enquadra o presente artigo, que pretende introduzir a temática da difícil integração de vídeo e multimédia e, posteriormente, conduzir uma revisão bibliográfica que revele algumas possíveis causas responsáveis pelo problema enunciado.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Noncommuting local common causes for correlations violating the Clauser-Horne inequality
Creators: name: Hofer-Szabó, Gábor
name: Vecsernyés, Péter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the paper the EPR-Bohm scenario will be reproduced in an algebraic quantum field theoretical setting with locally finite degrees of freedom. It will be shown that for a set of spatially separated correlating events (projections) maximally violating the Clauser-Horne inequality there can be given a common causal explanation if commutativity is abandoned between the common cause and the correlating events. Moreover, the noncommuting common cause will be local and supported in the common past of the correlating events.
Implicações sócio-espaciais das interacções online
Creators: name: Antunes, Maria João
name: Castro, Eduardo Anselmo
name: Mealha, Óscar
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Partindo da análise das respostas recolhidas através de um questionário online, realizado a 3129 utilizadores da Internet em Portugal, aborda-se o contributo dos novos serviços de comunicação para o alargamento das redes de interacção dos sujeitos, avalia-se como o enraizamento dos indivíduos ou instituições nos espaços físicos influi nas interacções que se estabelecem online e averiguam-se as mais-valias que têm sido retiradas desses novos relacionamentos.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Making the Necessary Sacrifice: The Military's Impact on a City at War, Calgary, 1939-1945
Creators: name: Sewell, Sarah
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: History--Canadian
subject: History--Military
subject: Calgary
subject: Homefront
subject: British Commonwealth Air Training

description: This thesis explores the military’s impact on a Canadian community at war. Calgary is the subject of this study because of the unique relationship and history it has with the military. This thesis seeks to examine the Second World War experience of a community whose major contribution to the war was hosting active and reserve personnel of the three armed forces, their families and a significant portion of the British Commonwealth Air Training Plan. Through this study, a greater understanding of the military’s impact on the complexities of daily life in a city at war can be understood and placed within the national context.
Geração expedita de modelos virtuais com base em informação geográfica 2D
Creators: name: Carvalho, Alexandre Valle De
name: Bártolo, Luís Cordeiro
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Até recentemente, e no contexto dos organismos públicos nacionais, locais, a utilização dos Sistemas de Informação Geográfica (SIG) centrava-se, fundamentalmente, em actividades internas, pelo que, os benefícios da utilização dos SIGs não eram directamente visíveis pelo público. Só mais recentemente se explora o potencial da internet e dos serviços online que têm como base a disponibilização de informação geográfica. Este facto resultou do crescente interesse dos cidadãos em aceder a informações específicas, relacionadas com a gestão autárquica de uma forma ágil, a partir de qualquer lugar.Resultaram assim novos serviços online, que recorrem aos SIGs como o repositório privilegiado de informação. No entanto, fruto do legado tecnológico e das necessidades originais de representação de informação geográfica, os SIGs capturam representações bidimensionais do mundo real, pelo que grande parte dos serviços online disponibilizam a visualização da componente espacial na forma de mapas bidimensionais. A constituição de serviços online para diversas áreas, por exemplo, o turismo, a cibercultura e o lazer, que utilizam informação tridimensional revela-se desejável. Neste âmbito torna-se essencial produzir modelos 3D que sirvam de conteúdos a esses serviços. Por outro lado, a recolha dessa informação, 3D, revela-se uma tarefa árdua e morosa, pelo que os esforços podem dirigir-se para a exploração do potencial existente na informação geográfica bidimensional já recolhida. Neste contexto, a presente comunicação analisa a possibilidade de gerar automaticamente modelos tridimensionais com base na informação geográfica existente numa autarquia. Estes modelos constituem a base da criação de serviços online para fins turísticos e culturais, entre outros, que não só eliminam as restrições espaciais e temporais no acesso como também permitem aumentar o grau de imersividade e de envolvimento no consumo dos conteúdos.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Discrete antiferromagnetic spin-wave excitations in the giant ferric wheel Fe18
Creators: name: Ummethum, J.
name: Nehrkorn, J.
name: Mukherjee, S.
name: Ivanov, N. B.
name: Stuiber, S.
name: Strässle, Th.
name: Tregenna-Pigott, P. L. W.
name: Mutka, H.
name: Christou, G.
name: Waldmann, O.
name: Schnack, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The low-temperature elementary spin excitations in the AFM molecular wheel Fe18 were studied experimentally by inelastic neutron scattering and theoretically by modern numerical methods, such as dynamical density matrix renormalization group or quantum Monte Carlo techniques, and analytical spin-wave theory calculations. Fe18 involves eighteen spin-5/2 Fe(III) ions with a Hilbert space dimension of 10^14, constituting a physical system that is situated in a region between microscopic and macroscopic. The combined experimental and theoretical approach allowed us to characterize and discuss the magnetic properties of Fe18 in great detail. It is demonstrated that physical concepts such as the rotational-band or L&E-band concepts developed for smaller rings are still applicable. In particular, the higher-lying low-temperature elementary spin excitations in Fe18 or AFM wheels in general are of discrete antiferromagnetic spin-wave character.
description: 16 pages, 10 figures
The Woman and the Lyre
Creators: name: Aska, Alyssa
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Music
subject: Composition
subject: music theatre
subject: electronic music
subject: contemporary music

description: The Woman and the Lyre, for voice, flute, cello, piano, and electronics, is a multi-faceted musical work that integrates elements from various disciplines including poetry, drama, and movement. The text is drawn from fragments of poetry by the ancient Greek poet Sappho as well as interpretations of her work by the 20th century Canadian poet Bliss Carman. Different approaches to electroacoustic performance practice are used to enhance the emotional meaning of the text. These approaches focus on the relationship between the performer’s actions onstage and the resulting sounds, aided through the integration of live electronics. The performers interact with these electronics both with gestural controller systems and video tracking, and have varying degrees of perceived control throughout. Electronic processing is used to enhance the instrumental sound and create diverse sonic environments that serve the dramatic narrative of the composition. The Woman and the Lyre is comprised of two large parts: Sapphic Cycle, and Fayum Fragments. Sapphic Cycle is a musical setting of four poems from Bliss Carman’s work Sappho: One Hundred Lyrics. Fayum Fragments is inserted between these movements and consists of ten short miniatures, presented in variable order. Each of these miniatures musically evokes text fragments from a recovered papyrus attributed to Sappho. This portion of The Woman and the Lyre involves the singer also taking on the role of conductor: the performer’s physical gestures, tracked by a Leap Motion sensor device, determine which miniature will be performed at any given moment, thus creating the variable form of the composition. The Woman and the Lyre, therefore, while consisting of many layers of material, is unified by integrating the electronics as an important component of the narrative and form.
New insights into the star formation histories of candidate intermediate-age early-type galaxies from K'-band imaging of globular clusters
Creators: name: Georgiev, Iskren Y.
name: Goudfrooij, Paul
name: Puzia, Thomas H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate age and metallicity distributions of bright globular clusters (GCs) in the candidate intermediate-age early-type galaxies NGC 3610, NGC 584 and NGC 3377 using a combination of new Gemini/NIRI K'-band imaging and existing optical V,I photometry from HST data. The V-I vs I-K' colour-colour diagram is found to break the age-metallicity degeneracy present in optical colours, as I-K' primarily measures a populations' metallicity and is relatively insensitive, unlike optical spectroscopy, to the effect of hot horizontal branch (HB) stars, known to be present in massive old GCs. We derive GCs' photometric age, Z and masses. In general, metal-poor ([Z/H]6x10^5 M_sol) in NGC 3610 with available spectroscopic data, photometric ages are older by ~2 Gyr, and this difference is more pronounced for the metal-poor GCs. However, photometric and spectroscopic metallicities are in good agreement. We suggest that this indicates the presence of a hot HB in these massive clusters, which renders spectroscopic ages from Balmer line strengths to be underestimated. To support this suggestion we show that all Galactic GCs with M>6x10^5 M_sol feature hot HBs, except 47 Tuc. Using the relation between the most massive GC mass and the galaxy's SFR, we find that the galaxies' peak SFR was attained at the epoch of the formation of the oldest (metal-poor) GCs. Age and [Z/H] distributions of the metal-rich GCs are broad, indicating prolonged galaxy star formation histories. The peak value of the age and [Z/H] distributions of the GCs correlates with host galaxy integrated age and [Z/H], showing that GCs can indeed be used as relevant proxies of the star formation histories of galaxies.(Abridged)
description: Accepted by MNRAS; 18 pages, 12 figures, 6 tables (v2 added references)
Investigating the Antiquity of Inter-Regional Contact between Southern Yukon and the Northern Northwest Coast through an Ancient DNA Analysis of Cryogenic Wooden Biofacts Recovered from Alpine Archaeological Sites in the Northwestern Subarctic
Creators: name: Murchie, Tyler James
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Archaeology
subject: Botany
subject: Genetics
subject: FOS: Biological sciences
subject: Ancient DNA
subject: subarctic archaeology
subject: chloroplast DNA
subject: salix phylogeography
subject: cryogenic archaeology
subject: ice patch archaeology
subject: wood DNA
subject: aDNA
subject: northwestern subarctic interactions
subject: precontact alpine glacial travel
subject: bioarchaeology
subject: paleogenetics
subject: wood artifacts
subject: wood biofacts
subject: Yukon archaeology

description: The antiquity of contact between Eyak-Tlingit in Southeastern Alaska and Athabaskans in Southern Yukon is poorly understood. Archaeological evidence of inter-regional interaction is currently confined to the Late Period, although there is ethnographic evidence of more ancient networks. The discovery of a cryogenically preserved stick (willow [Salix sp.]), from the Kluane Icefields may represent the region’s earliest evidence (2430 ± 20 14C BP) of glacial travel. Ancient DNA was used in an attempt to assess the specimen’s origin based on a phylogeographic analysis of modern Salix distributed on either side of the Saint Elias Range. DNA could not be amplified from the target specimen, leading to an investigation of the viability of paleogenetics for wooden artifacts using biofacts from alpine ice patches in Southern Yukon. A considerable lack of plastid variability was observed in modern Salix ssp., although three loci were identified that may be amenable to phylogeographic applications.
The role of Notch signaling in vascular development and homeostasis
Creators: name: Chang, Linda Ya-Ting
Publisher: name: University of British Columbia
Year: 2010

description: The vasculature is essential for the delivery of oxygen and nutrients and the removal of metabolic wastes from tissues of the body. The embryonic vasculature is developed through the processes of vasculogenesis, angiogenesis, and arteriogenesis. Once the vasculature is fully developed and stabilized, the adult vasculature shows very little proliferation or cell death. Nevertheless, the endothelium, which lines the lumen of the blood vessels, is actively involved in the control of vascular tone, permeability, blood flow, coagulation, inflammation and tissue repair. An injury to the endothelium is important for progression of diseases such as atherosclerosis and the sepsis syndrome. The Notch signaling pathway has emerged in the recent decade as an important player in multiple vascular processes and endothelial behaviors. This thesis examines the role of the Notch signaling pathway in embryonic arteriogenesis and endothelial survival signaling. The first part of this thesis investigates the developmental source of vascular smooth muscle cells. This study presents the first in situ observation of an immediate smooth muscle precursor cell present in all embryonic arteries. This Tie1⁺/CD31⁺/VE-cadherin⁻ precursor requires Notch signaling to differentiate into vascular smooth muscle cells and to ensure vascular stability of newly formed arteries. However, Notch activation is not required in the precursor cells to maintain the medial layer of the arteries once the vessel is invested with vascular smooth muscle cells. In the second part of this thesis, the mechanism of Notch-induced endothelial survival signaling is examined. In endothelial cells, Notch signaling activates phosphotidylinositol-3 kinase (PI3K) through up-regulation of a secreted factor. Activity of PI3K is required to offset the parallel apoptotic signaling induced by Notch activation and to maintain endothelial survival through the up-regulation of Slug, a direct Notch target with anti-apoptotic activity. Upon treatment with apoptotic stimuli, Notch activation shows context-dependent effects on endothelial survival. Inhibition of PI3K activity and Slug expression by a stimulus abolishes Notch-induced endothelial survival and increases apoptotic death. The work presented in this thesis shows that the Notch signaling pathway is essential for the stability of the vasculature through regulation of vascular smooth muscle cell differentiation and endothelial cell survival.
Emission Measurement of Air Pollutants from CNG-gasoline Bi-fuel Vehicles
Creators: name: Huang, Xiaoyan
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Environmental
subject: motor vehicle emission
subject: CNG
subject: bi-fuel vehicles

description: The estimation of emission factors (EFs) is the basis of accurate emission inventory. However, the EFs of air pollutants for motor vehicles vary under different operating conditions, which will cause uncertainty in developing emission inventory. Natural gas (NG), considered as a “cleaner” fuel than gasoline, is increasingly being used to reduce combustion emissions, but the information is scarce about how much emission reduction can be achieved for motor vehicles burning NG (NGVs) under real road driving conditions, which is necessary for evaluating the environmental benefits for NGVs. In this thesis, on-board measurements of the emissions from nine bi-fuel vehicles were conducted under different operating conditions on the real road. A comparative study was performed for the EFs of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx) for each operating condition when the vehicles using gasoline or compressed NG (CNG) as fuel.
Os meios de comunic@ção social na Internet: contributos para a análise sociológica dos cibermedi@
Creators: name: Soares, Tânia De Morais
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Desde 1998 que tenho vindo a tentar compreender e reflectir sobre a relação entre os ditos Velhos e Novos Media , ou mais precisamente, sobre a convergência tecnológica no universo mediático. O trabalho que tenho vindo a realizar não se centra sobretudo nas questões do Jornalismo Online, no sentido da alteração das rotinas produtivas da prática profissional do jornalismo e dos jornalistas mas, mais concretamente, no resultado dessas dinâmicas e contingências profissionais, ou seja, a produção online ou a análise dos conteúdos dos media presentes na Internet. Esta opção não descura o interesse reflexivo e crítico associado à referida problemática, até porque ela não é dissociável do trabalho que tenho vindo a realizar e aparece necessariamente incorporada no mesmo, mas resulta antes de uma escolha metodológica de direccionar o enfoque da produção científica para um campo de análise menos explorado e onde se tem verificado uma maior carência de informação empiricamente sustentada. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
CHILDREN'S DIGESTIVE SYSTEM. INJURY SYNDROMES AND METHODS OF EXAMINATION.
Creators: name: Izomov, Tohir
name: Aminova, Mohinur
name: Nuraliyeva, Madina
name: Rahmatulloyeva, Shahlo
name: Alimova, Feruza
name: Nasriyev, Dilshod
Publisher: name: Zenodo
Year: 2023

description: From childhood, it is important to have a healthy attitude to proper nutrition and lifestyle. But mothers often make mistakes when feeding young children. This article provides information about the digestive system in children, diseases and disorders, syndromes, and methods of examination.
Discovery of a stripped red giant core in a bright eclipsing binary system
Creators: name: Maxted, P. F. L.
name: Anderson, D. R.
name: Burleigh, M. R.
name: Collier-Cameron, A.
name: Heber, U.
name: Gaensicke, B. T.
name: Geier, S.
name: Kupfer, T.
name: Marsh, T. R.
name: Nelemans, G.
name: O'Toole, S. J.
name: Ostensen, R. H.
name: Smalley, B.
name: West, R. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have identified a star in the WASP archive photometry with an unusual lightcurve due to the total eclipse of a small, hot star by an apparently normal A-type star and with an orbital period of only 0.668d. From an analysis of the WASP lightcurve together with V-band and I_C-band photometry of the eclipse and a spectroscopic orbit for the A-type star we estimate that the companion star has a mass of (0.23+-0.03)Msun and a radius of (0.33+-0.01)Rsun, assuming that the A-type star is a main-sequence star with the metalicity appropriate for a thick-disk star. The effective temperature of the companion is (13400+-1200)K from which we infer a luminosity of (3+-1)Lsun. From a comparison of these parameters to various models we conclude that the companion is most likely to be the remnant of a red giant star that has been very recently stripped of its outer layers by mass transfer onto the A-type star. In this scenario, the companion is currently in a shell hydrogen-burning phase of its evolution, evolving at nearly constant luminosity to hotter effective temperatures prior to ceasing hydrogen burning and fading to become a low-mass white dwarf composed of helium (He-WD). The system will then resemble the pre-He-WD/He-WD companions to A-type and B-type stars recently identified from their Kepler satellite lightcurves (KOI-74, KOI-81 and KIC10657664). This newly discovered binary offers the opportunity to study the evolution of a stripped red giant star through the pre-He-WD stage in great detail.
description: Accepted (subject to minor revision) for publication in MNRAS. This is the re-submitted revised version
Cibercorpo: interface e (in)formação
Creators: name: Xavier, Claudio
name: Silva, Lídia Oliveira
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: No atual cenário tecnológico, para o qual a interface tem um papel determinante ao possibilitar relações de interação e troca no ciberespaço, discute a emergência do cibercorpo e de um movimento de expansão da consciência, espécie de projeção dos “eus” nas telas de computador. Sobre a importância da interface, propõe contribuir com a perspectiva de que, na cibercultura, o estatuto de corporeidade física não deve ser abandonado. Enfatiza as possibilidades comunicacionais que existem entre um cibercorpo passível de se desmaterializar e um outro que pode potencializar as redes de comunicação e de interação, territorial e virtual, através da (in)formação.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
A Randomized Wait-List Controlled Trial of Dialectical Behaviour Therapy Guided Self-Help for Recurrent Binge Eating: A Pilot Study
Creators: name: Masson, Philip
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Mental Health
subject: Psychology--Clinical
subject: Binge Eating Disorder
subject: Eating Disorders
subject: Dialectical Behaviour Therapy
subject: Guided Self-Help
subject: randomized controlled trial

description: Empirically supported treatments (ESTs) exist but are not commonly used. Guided self-help (GSH) may be one tool to increase the dissemination of ESTs. This study examined the efficacy of a GSH treatment, for individuals with either full binge eating disorder (BED) or subthreshold BED, based on dialectical behaviour therapy (DBTgsh). Sixty individuals were randomized to either a DBTgsh condition or a wait-list condition (WL) for 13 weeks. Participants (mean age 42.8 years) were recruited from media advertisements. Individuals in the DBTgsh condition received a 40-minute orientation session, a copy of the manual, and six 20-minute support calls over 13 weeks. Participants were assessed at the beginning and end of the treatment period using diagnostic items from the Eating Disorder Examination and self-report measures. Participants in the DBTgsh condition were assessed at 6 months post-treatment. At the end of treatment, DBTgsh participants, compared to WL participants, reported significantly fewer binge eating episodes (2.1 versus 12.6) and significantly greater rates of abstinence from binge eating (50.0% versus 3.7%) in the last 28 days. In addition, after 13 weeks, participants in the DBTgsh condition reported greater increases in quality of life and emotional regulation ability and significant reductions in concerns about eating, shape, and weight, the tendency to be impulsive when in a negative mood, the tendency to eat when experiencing emotions, and the expectancy that food helps emotion regulation. Dietary restraint and the tendency to be impulsive when in a positive mood did not differ between the two groups. At 6 months post-treatment, most improvements in the DBTgsh group were maintained; rates of binge eating increased, but were still significantly lower than at baseline. DBTgsh may be an effective treatment for BED.
Caminhos labirínticos para pensar os objetos tecnoinformacionais
Creators: name: Lacerda, Juciano De Sousa
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: O fio que levarei comigo nesse percurso desmesurado é a tentativa de compreender o que há de provocativo, epistemologicamente, em alguns aspectos do que venho desenvolvendo como objeto de pesquisa: os sentidos construídos no campo midiático e no mundo da vida (comunidades) sobre os usos e apropriações dos telecentros na cidade de Porto Alegre (RS). Esses aspectos envolvem a proposta de que no campo da comunicação, a compreensão das relações do sujeito com os objetos tecnoinformacionais, não se resume a uma ação do sujeito sobre o objeto (tekhné), ampliando-se a uma práxis em que a ação comunicacional põe em relação um sujeito com outro, cujas significações agenciadas, entre os sujeitos em interação, via processos tecnológicos de comunicação ganha dimensionamentos outros pela intervenção de lógicas específicas aos ambientes gerados pela mediação dessas tecnologias. Em suma, reduzir a abordagem de tecnologias, como os computadores conectados em rede dentro de um espaço de um telecentro, simplesmente como uma ferramenta, um instrumento de transmissão e armazenamento de dados de alta velocidade e fluidez é uma forma de conhecimento ainda limitada e limitante.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”