cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measurement of Amplifier and Mixer Noise Parameters
Creators: name: Himmelfarb, Michael
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Electronics and Electrical
subject: Noise Parameter
subject: Mixer
subject: LNA

description: The work completed in this thesis expands the theory of measuring noise parameter in linear and non-linear devices. A new method is proposed that defines the possible impedance regions that are guaranteed to produce linearly independent system of equations required for accurate noise parameter extraction. The results show the proposed regions produce noise parameter solutions within 3uncertainties of noise parameters found with patterns previously reported in literature but with the minimum of only four impedances. Additionally, a model to characterize the non-linear noise of a Gilbert Cell mixer in terms of multiple sets of noise parameters was successfully implemented using a system of non-linear equations. A measurement procedure was designed to extract the parameters in the non-linear model in order to solve for the multiple sets of noise parameters. The maximum error between measured and modeled noise factors was less than 3% at any impedance.
O lançamento da Moeda Europeia e os seus enquadramentos na Imprensa
Creators: name: Silveirinha, Maria João
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Este trabalho procura analisar, numa perspectiva comunicacional construtivista, os discursos daqueles que reportam ou comentam a construção da Europa, no contexto de uma comunidade de leitores da imprensa generalista. Sendo a Europa uma realidade com a qual nos relacionamos de formas múltiplas e tendo o lançamento da moeda constituído apenas um dos tópicos de um processo mais vasto, importa ver de que forma o discurso jornalístico o construiu. O trabalho parte do conceito de enquadramento proposto por Goffman e posteriormente trabalhado por outros autores e aplica-o à cobertura de dois jornais nacionais do lançamento da moeda europeia. O texto mostra como os diferentes tópicos e diferentes ‘camadas’ de relação com o acontecimento receberam diferentes chaves de interpretação, gerando um “guião dramático” como formas discursivas de organizar a vida colectiva nesse momento da vida nacional.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
O discurso dramático da nova imprensa partidária
Creators: name: Sousa, Pedro Diniz De
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: A presente investigação pretende testar um modelo de análise do discurso dramático na imprensa concebido há alguns anos e entretanto publicado em livro, a partir de um estudo de caso centrado no jornalismo partidário durante o chamado "PREC" (Sousa, 2003). Vimos na ocasião como a Voz do Povo, afecta à UDP e a uma ideologia abertamente marxista e revolucionária utilizava este tipo de discurso, com que objectivos e, para efeitos de comparação, usámos o jornal do PS, o então Portugal Socialista , que defendia abertamente uma democracia pluralista e a defesa das instituições democráticas vigentes e então a braços com ameaças reais. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Perilous Connections: Poverty, Food Insecurity, HIV/AIDS, and Gender in Lilongwe, Malawi
Creators: name: Mambo, Tatenda T
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Geography
subject: Food Security, HIV/AIDS, Gender, Malawi

description: Although food security has largely been a rural issue, it is increasingly an urban concern, particularly in slums and informal settlements of southern Africa. In Malawi, high urbanization rates are leading to new configurations of the urban landscape, characterized by the growth of slums. Slums highlight the increasing prominence of poverty within cities, exhibited by deplorable living conditions. Much of this poverty stems from absence of economic growth relative to the rate of urban growth. Given that cities are cash dependent, slum residents often cut back on food expenditures, which are viewed as variable compared to more fixed costs such as rent, fuel, and education. Food security is further complicated by the HIV/AIDS epidemic, which largely affects the most economically active segments of the population (15–45 years), resulting in the erosion of social and human capital, and removal of social safety nets. Good nutrition, imperative for people infected with HIV/AIDS, slows progression of the disease, makes medication more effective, and maintains immune strength to fight opportunistic infections. The burdens created at the intersection of HIV/AIDS and food security disproportionately affect women because they are physiologically more susceptible to infection and furthermore, they are the primary care givers, producers and acquirers of food within households. The status and resources available to women are therefore central to addressing the problems outlined above. Drawing on a pragmatist perspective emphasizing context, this study holistically explores the causal dynamics and linkages between poverty, food insecurity, HIV/AIDS and gender in Kauma and Mgona, two slums in Lilongwe, Malawi. While food insecurity was high in both study sites, geography accounted for the differences, affording Kauma residents a wider range of livelihood activities. Contrary to the literature, migration to the city for many women limited their ability to contribute to their household, financially or by acquiring food, and as such decreased self-determination. Gender dynamics within households and the resources available to women in the urban environment, determined women’s contributions to household food and nutritional status. Only by holistically studying food insecurity and the interrelated complexities of poverty, HIV/AIDS and gender, can we begin to find comprehensive solutions.
Quantum phase properties of nonlinear optical phenomena
Creators: name: Tanas, R.
name: Miranowicz, A.
name: Gantsog, Ts.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review some quantum-phase descriptions of optical fields. We focus on real fields that can be generated in practice in various nonlinear optical processes. Thus, we rather avoid discussions of phase formalisms as such and try to exploit their practical applicability in the description of optical fields. In the description of the phase properties we use two different, though related formalisms: the Pegg-Barnett Hermitian phase formalism and the formalism based on $s$-parametrized phase distributions.
description: 81 pages, 18 figures. Volume XXXV of Progress in Optics is out of print, while the topic of our review article seems to be still of interest
Finite Temperature and Density Effect on Symmetry Breaking by Wilson Loops
Creators: name: Shiraishi, Kiyoshi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A finite temperature and density effect of Wilson loop elements on non-simply connected space is investigated in the model suggested by Hosotani. Using one-loop calculations it is shown that the value of an "order parameter" does not shift as the temperature grows. We find that finite density effect is of much importance for restoration of symmetry.
description: 11pages, no figure
Building Babel - Towards a Security System through Co-dependency and Diversity
Creators: name: De Castro, Daniel Medeiros Nunes
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Computer Science
subject: computer security
subject: Diversity
subject: co-dependency
subject: polyglot
subject: operating system

description: A common misconception in computer security is that a computer is able to evaluate whether or not it is compromised. However, if we consider a compromised system, the evaluation is not reliable, thus meaningless. By reducing the set of trusted software components to a minimum size, allowing feasible verification of security, and by having the evaluation of any other software happening physically apart from the computer in question, we could avoid contamination of the evaluation process. This research project called “Babel” consists of an innovative approach for computer security. We envision a system where, from the user’s viewpoint, everything seems exactly the same, but the computer is unable, by itself, to execute any installed software. Babel requires a third party to incrementally translate all or part of a program, thus allowing the program to be executed. We call this requirement for an external party “secure co-dependency”. Babel assumes that the computer and each program running on this computer speak a different language. We imagine these different languages as instructions for different processors, which can be implemented as virtual machines (VMs). The computer needs to communicate to an external interpreter to execute any program. This interpreter not only translates code instructions but it also performs security checks. Inspired by the idea of software diversity, we use different languages among processes to enforce co-dependency. Additionally, software diversity makes it harder for adversaries (malicious software or external attackers) to infect or disrupt program execution. Babel consists of two main, separate systems: a client with the operating system where users run their programs; and a server, responsible for translation and for security checks. Babel components consist basically of a flexible VM (where we can define different instruction sets and registers for each instance) and a communication module. On the server side, the main components of Babel are a translator (or interpreter), which initially provides a VM specification and later on translates the programs to that VM, and a security checker responsible for detecting malicious activity. This dissertation documents our experiences and successes developing a proof-of-concept of Babel.
title: Nucleolar dynamics in cellular senescence
Creators: name: Park, Gyuryang
Publisher: name: The University of Edinburgh
Year: 2021
Subjects: subject: nucleolus
subject: ribosome biogenesis
subject: stressors
subject: nucleolar stress
subject: oncogene-induced senescence (OIS)
subject: replicative senescence
subject: senescence-associated heterochromatin foci (SAHF)

description: The nucleolus is a subnuclear structure widely known as the site of ribosome biogenesis. Recently, additional functions of the nucleolus have been described, one of which is serving as a stress sensor. When the nucleolus senses stressors, it causes nucleolar stress characterised by changes to nucleolar area and function, along with signalling pathways including p53. Although alterations in nucleolar area were identified under nucleolar stress, the dynamic of nucleolar area triggered by different senescence inducers remains elusive. Besides, gene expression associated with enlarged nucleoli is not well understood. Here, I show nucleolar dynamics in different types of cellular senescence including oncogene-induced senescence (OIS), secondary senescence, and replicative senescence (RS). I have used human diploid fibroblast that were subjected to immunofluorescence with fibrillarin antibodies, which were subsequently quantitated by automated image analysis. I found enlarged nucleolar area upon the induction of OIS and RS but were not found in secondary senescence. Furthermore, nucleolar expansion was more significant in OIS than RS. In addition to nucleolar hypertrophy, changes in nuclear area and the enrichment of senescence-associated heterochromatin foci (SAHF) formation were identified along with enlarged nucleoli in OIS. Notably, SAHF-positive cells exhibited significantly enlarged nucleoli over SAHF-negative cells, suggesting alterations in nucleolar area may link with SAHF formation. Conversely, secondary senescence did not give rise to such nuclear alteration and chromosomal rearrangements. RS showed increased nuclear area, but no enrichment of SAHF formation in conjunction with nucleolar enlargement. The examination of candidate genes related with alterations in nucleoli in OIS and RS revealed distinct gene expression. For example, ribosomal protein L5 and L11 were overexpressed in OIS, yet they were suppressed in RS. The results demonstrate nucleolar stress in response to different senescence inducers leads to unique nucleolar dynamics, changes to nuclear and heterochromatin structure, and altered gene expression.
Field-dependent anisotropic magnetoresistance and planar Hall effect in epitaxial magnetite thin films
Creators: name: Naftalis, N.
name: Kaplan, A.
name: Schultz, M.
name: Vaz, C. A. F.
name: Moyer, J. A.
name: Ahn, C. H.
name: Klein, L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A systematic study of the temperature and magnetic field dependence of the longitudinal and transverse resistivities of epitaxial thin films of magnetite (Fe3O4) is reported. The anisotropic magnetoresistance (AMR) and the planar Hall effect (PHE) are sensitive to the in-plane orientation of current and magnetization with respect to crystal axes in a way consistent with the cubic symmetry of the system. We also show that the AMR exhibit sign reversal as a function of temperature, and that it shows significant field dependence without saturation up to 9 T. Our results provide a unified description of the anisotropic magnetoresistance effects in epitaxial magnetite films and illustrate the need for a full determination of the resistivity tensor in crystalline systems.
Heat transfer characterization of secondary cooling in the horizontal direct chill casting process for aluminum alloy re-melt ingot
Creators: name: Xue, Boran
Publisher: name: University of British Columbia
Year: 2010

description: Horizontal direct chill (HDC) casting is a continuous process used to produce extrusion billet and re-melt aluminum ingot. As in vertical DC casting, secondary cooling, where water directly impinges on the cast surface, is an important process that can affect cast quality and production rates. During HDC casting, secondary cooling is further complicated by horizontal water flow and the water spray conditions. Characterizing the heat transfer during the secondary cooling process is necessary for improved understanding of the process. Since the accessibility of the HDC casting machine is limited and the direct measurement of heat transfer in secondary cooling are difficult, numerical modeling thus becomes a good approach for process development. In this research, the heat transfer occurring in secondary cooling of an HDC ingot has been studied. Water spray conditions on three different casting surface were simulated separately by quenching the blocks of HDC cast A356 aluminum alloy which was cut from a T-ingot. The temperature history during the cooling within the blocks was recorded by sub-surface thermocouples. An inverse heat transfer model was developed and used to calculate the heat fluxes on the casting surfaces using measured temperature data. The heat fluxes were characterized via boiling curves, which are the functions of surface temperatures, in each spray configuration. The effects of operational parameters, including the casting speed and the water cooling rate, were investigated by comparing the characteristic features of the calculated boiling curves. The spray configuration effect was also studied with the calculated results from the stationary tests in a qualitative fashion. Then a fitting technique was developed to idealize the calculated boiling curves. The idealized boiling curves were summarized into the functions, which provide practical database for application of the results in this research. All in all, the simulation apparatus and the IHC model provide the ability of characterizing the heat transfer occurring in secondary cooling region of HDC casting with lab-scale experiments. Consequently, the expensive and risky plant trials can be avoided.
Impacto das políticas para a Imprensa Regional nos dois jornais regionais diários com sede em Braga
Creators: name: Ribeiro, Luísa Teresa Rebolo
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Este ensaio visa reflectir sobre o impacto das políticas públicas para o sector da imprensa regional nos jornais regionais diários com sede em Braga: Correio do Minho e Diário do Minho . A hipótese de trabalho que orientou a investigação, e que pensamos poder confirmar com os dados recolhidos, é que as políticas para o sector da imprensa regional vão tendo cada vez menos impacto nos jornais à medida que eles criam estruturais empresariais sólidas.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Modeling Coupled Transport and Reaction Phenomena in Porous Media by Lattice Boltzmann Method: Micro Reactors and Polymer Electrolyte Fuel Cell Electrode
Creators: name: Tarokh, Atefeh
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Chemical
subject: Lattice Boltzmann Method
subject: Micro-reactors
subject: Polymer electrolyte fuel cell

description: A numerical code based on Lattice Boltzmann Method (LBM) capable of solving coupled reaction-transport phenomena (i.e. heat, mass, fluid flow and reaction) in porous media was developed. LBM is a powerful numerical technique for modeling transport phenomena in complex geometries. The developed in-house LBM code is then used to: First, modeling ammonia decomposition in the micro-reactors made of catalyst-coated posts. Fluid flow, heat and mass transfer along with chemical reaction simultaneously occur in micro-reactors. A parametric study in terms of post shapes and arrangements was performed. It was found that square shape posts with hexagonal arrangement yield maximum based on hydrogen production. Second, modeling the oxidation reduction reaction in the cathode of a polymer electrolyte fuel cell as an idealized single pore geometry. Oxygen, ion and electron diffusions are modeled. Fuel cell performance based on the generated polarization curve is examined for various ionomer thickness.
Observation of a superfluid Hall effect
Creators: name: LeBlanc, L. J.
name: Jimenez-Garcia, K.
name: Williams, R. A.
name: Beeler, M. C.
name: Perry, A. R.
name: Phillips, W. D.
name: Spielman, I. B
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Measurement techniques based upon the Hall effect are invaluable tools in condensed matter physics. When an electric current flows perpendicular to a magnetic field, a Hall voltage develops in the direction transverse to both the current and the field. In semiconductors, this behaviour is routinely used to measure the density and charge of the current carriers (electrons in conduction bands or holes in valence bands) -- internal properties of the system that are not accessible from measurements of the conventional resistance. For strongly interacting electron systems, whose behaviour can be very different from the free electron gas, the Hall effect's sensitivity to internal properties makes it a powerful tool; indeed, the quantum Hall effects are named after the tool by which they are most distinctly measured instead of the physics from which the phenomena originate. Here we report the first observation of a Hall effect in an ultracold gas of neutral atoms, revealed by measuring a Bose-Einstein condensate's transport properties perpendicular to a synthetic magnetic field. Our observations in this vortex-free superfluid are in good agreement with hydrodynamic predictions, demonstrating that the system's global irrotationality influences this superfluid Hall signal.
description: 5 pages, 4 figures, plus 3 pages supplementary information
Exploring Flood Risk Perceptions and Risk Management Preferences in the Aftermath of the Calgary Flood of 2013
Creators: name: Tanner, Alexa
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Geography
subject: risk
subject: Flooding
subject: Risk Perception

description: Many studies have examined the general public’s flood risk perceptions; however, discussion continues around clarifying the variables that drive perceptions and management preferences. This thesis examines flood risk perceptions and management preferences of the general public within the City of Calgary in the aftermath of the 2013 Alberta flood. The findings reveal that short-term flood risk is influenced by direct experience with flooding, while long-term risk perceptions are not. Using perceptions of distance, direct experience was found to influence perceptions of distance, and by proxy, risk perceptions. Further, participants’ views towards climate change were found to be more influential in shaping risk perceptions than being evacuated due to the risk of flooding. In addition, it was found that response-efficacy and flood mitigation preferences were influenced by direct experience during the flood. These results are significant in understanding the role evacuation experience plays in risk perception formation and shaping mitigation preferences.
Land-based Practice for Indigenous Health and Wellness in Yukon, Nunavut, and the Northwest Territories
Creators: name: Redvers, Jennifer Metisse
Publisher: name: Environmental Design
Year: 2016
Subjects: subject: Education--Health
subject: Ecology
subject: FOS: Biological sciences
subject: Mental Health
subject: Indigenous
subject: Land-based
subject: resilience
subject: Health
subject: Education

description: This thesis examines the cultural concept and role of the Land as healer in Indigenous communities in the Northwest Territories, Yukon, and Nunavut, and the importance of facilitating modern Land-based programs and activities for integrated health, education, and environmental outcomes. It describes a yet largely undefined field of professional practice currently being negotiated on the ground in communities. This valid form of integrative practice, centered in Indigenous pedagogy and wisdom, recognizes that people are intimately interwoven and connected with their traditional lands, and that directly cultivating this fundamental relationship can shape and influence all areas of interaction with society, including our health and wellness. Research methods were framed by an Indigenous methodology of narrative experience. Eleven Land-based practitioners were interviewed, and their narratives speak to the recognition of Land practice as an important part of individual and community resilience in the face of rapid colonial change and its subsequent challenges.
On the critical nature of plastic flow: one and two dimensional models
Creators: name: Salman, Oguz Umut
name: Truskinovsky, Lev
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Steady state plastic flows have been compared to developed turbulence because the two phenomena share the inherent complexity of particle trajectories, the scale free spatial patterns and the power law statistics of fluctuations. The origin of the apparently chaotic and at the same time highly correlated microscopic response in plasticity remains hidden behind conventional engineering models which are based on smooth fitting functions. To regain access to fluctuations, we study in this paper a minimal mesoscopic model whose goal is to elucidate the origin of scale free behavior in plasticity. We limit our description to fcc type crystals and leave out both temperature and rate effects. We provide simple illustrations of the fact that complexity in rate independent athermal plastic flows is due to marginal stability of the underlying elastic system. Our conclusions are based on a reduction of an over-damped visco-elasticity problem for a system with a rugged elastic energy landscape to an integer valued automaton. We start with an overdamped one dimensional model and show that it reproduces the main macroscopic phenomenology of rate independent plastic behavior but falls short of generating self similar structure of fluctuations. We then provide evidence that a two dimensional model is already adequate for describing power law statistics of avalanches and fractal character of dislocation patterning. In addition to capturing experimentally measured critical exponents, the proposed minimal model shows finite size scaling collapse and generates realistic shape functions in the scaling laws.
description: 72 pages, 40 Figures, International Journal of Engineering Science for the special issue in honor of Victor Berdichevsky, 2012
Identidade e políticas de reconhecimento social na sociedade de rede
Creators: name: Ferreira, Gil Baptista
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Este artigo considera a importância dos novos media no processo de formação das identidades nas sociedades modernas, ao constituírem-se em espaço privilegiado e instrumento poderoso em relação aos processos simbólicos de reconhecimento intersubjectivo. O meu objectivo é demonstrar como a categoria do reconhecimento social, associada às dinâmicas que os novos media propiciam, pode surgir não apenas como categoria fundamental para uma reflexão acerca das novas questões do mundo em que vivemos, mas ainda como opção válida para a compreensão de aspectos decisivos dos actuais processos de constituição das identidades.
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Boundary Lubricating Ability of Proteoglycan 4 at an Articular Cartilage-Meniscus Biointerface
Creators: name: Dorosz, Samuel
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Biomedical
subject: Proteoglycan 4
subject: Meniscus
subject: Boundary Lubrication
subject: Osteoarthritis

description: Proteoglycan 4 (PRG4) is a glycoprotein in synovial fluid (SF) and on the articular cartilage surface, where it acts as a boundary lubricant. Hyaluronan (HA) is another SF constituent that acts as a boundary lubricant at the cartilage-cartilage biointerface and interacts with PRG4 to synergistically lower friction. The meniscus is a fibrocartilaginous pad in the knee, on which PRG4 exists, that is critical for joint health. This thesis aimed to develop an in vitro lubrication test to determine the boundary lubricating ability of PRG4 and HA, alone and in combination, at the cartilage-meniscus biointerface, and assess the surface adsorption of recombinant human PRG4 (rhPRG4). A novel cartilage-meniscus test demonstrated that (rh)PRG4 and HA, alone and in combination, act as effective boundary lubricants at this biointerface. rhPRG4 adsorbed to the meniscal surface. This work contributes to the understanding of meniscus lubrication and potential development of osteoarthritis biotherapeutic treatments.
THE IMPACT OF STRATEGIC VIGILANCE ON ORGANIZATIONAL INGENUITY IN YEMEN'S MOBILE PHONE COMPANIES
Creators: name: MOHAMMAD ALI HUSSEIN AL-DHUFRI
name: D. MUHAMMAD ABDULLAH AL-ASHWAL
Publisher: name: Zenodo
Year: 2024
Subjects: Strategic Vigilance, Organizational Ingenuity.

description: Abstract

The study aimed to measure the impact of strategic vigilance on regulatory ingenuity in the Yemen's mobile phone companies. The identification tool was based on a random cast eye of 220 workers. The results of the study were as follows: The level of strategic vigilance in Yemen's mobile phone companies from the overall point of view of workers was high, with an average calculation of (5.36) With a standard deviation (0.71 and76.57%, the results of the study also showed that the level of organizational ingenuity in Yemen's mobile phone companies from the overall point of view of workers was high, with an average calculation of (5.14) with standard deviation (0.83) and 73.43%, and a statistically significant effect at a level (0.05≥α) strategic vigilance in its dimensions (technological vigilance, commercial vigilance, environmental vigilance, competitive vigilance) over the organizational ingenuity in Yemen's mobile phone companies.
Neutrino and Antineutrino Cross sections at MiniBooNE
Creators: name: Dharmapalan, Ranjan
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The MiniBooNE experiment has reported a number of high statistics neutrino and anti-neutrino cross sections-among which are the charged current quasi-elastic (CCQE) and neutral current elastic (NCE) neutrino scattering on mineral oil. Recently a study of the neutrino contamination of the anti-neutrino beam has concluded and the analysis of the anti-neutrino CCQE and NCE scattering is ongoing.
description: 3 pages, 6 figures. Proceedings of the XII International Workshop on Neutrino Factories, Super beams and Beta beams. (NuFact 2010, Tata Institute of Fundamental Research, Mumbai, India)
Arendt: uma perspectiva feminina do Espaço Público?
Creators: name: Martins, Carla
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: O espaço público, bem como as formas de a ele ter acesso e participar, têm sido modulados a partir de um entendimento predominantemente masculino. Na verdade, a questão de género está ausente da maior parte das reflexões teóricas que consideramos referenciais acerca do espaço público, como a proposta habermasiana. Como ponto de partida, admite-se a possibilidade de a conceptualização de domínio público presente na obra de Hannah Arendt consubstanciar, pelo menos indirectamente, uma visão feminina da esfera de visibilidade. Arendt lança as bases de uma nova teoria política e pode questionar-se se a arquitectura deste edifício, pelas categorias, argumentos, experiências históricas e definições que a suportam, legitima uma interpretação especificamente feminina ou no mínimo contrastiva do espaço público e, por maioria de razão, da política e do político. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
A Geospatial Infrastructure to Collect, Evaluate, and Distribute Volunteered Geographic Information for Disaster Management
Creators: name: Poorazizi, Mohammad Ebrahim
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Computer Science
subject: Disaster Management
subject: Volunteered Geographic Information
subject: Content Discovery
subject: Quality Assessment
subject: Interoperability

description: Recent disasters, such as the 2010 Haiti earthquake, have drawn attention to the potential role of citizens as active information producers. By using location-aware devices such as smartphones to collect geographic information in the form of geo-tagged text, photos, or videos, and sharing this information through online social media, such as Twitter, citizens create Volunteered Geographic Information (VGI). This thesis presents a framework for the effective use of VGI in disaster management platforms. The proposed framework consists of four components: (i) a VGI brokering module, to provide a standard service interface to retrieve VGI from multiple social media streams, (ii) a VGI quality control component, to evaluate spatiotemporal relevance and credibility of VGI, (iii) a VGI publisher module, which uses a service-based delivery mechanism to disseminate VGI, and (iv) a VGI discovery component, which acts like a yellow-pages service to find, browse, and query available VGI datasets. A set of quality metrics specifically designed for VGI evaluation is introduced. This research also presents a prototype implementation including an evaluation with social media data collected during Typhoon Hagupit (i.e., Typhoon Ruby), which hit the Philippines during December 2014. The evaluation results suggest that the proposed framework provides a promising solution towards an effective use of VGI in disaster management platforms. Utilization of the proposed quality metrics on the collected VGI database – with multiple social media stream contributions – will allow disaster response teams to make informed decisions that could save lives, meet basic humanitarian needs earlier, and perhaps limit environmental and economic damage.
Structural and electrical characterization of hybrid metal-polypyrrole nanowires
Creators: name: Gence, L.
name: Faniel, S.
name: Gustin, C.
name: Melinte, S.
name: Bayot, V.
name: Callegari, V.
name: Reynes, O.
name: Demoustier-Champagne, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present here the synthesis and structural characterization of hybrid Au-polypyrrole-Au and Pt- polypyrrole-Au nanowires together with a study of their electrical properties from room-temperature down to very low temperature. A careful characterization of the metal-polymer interfaces by trans- mission electron microscopy revealed that the structure and mechanical strength of bottom and upper interfaces are very different. Variable temperature electrical transport measurements were performed on both multiple nanowires - contained within the polycarbonate template - and single nanowires. Our data show that the three-dimensional Mott variable-range-hopping model provides a complete framework for the understanding of transport in PPy nanowires, including non-linear current-voltage characteristics and magnetotransport at low temperatures.
description: Phys. Rev. B Vol. 76 Issue 11 (2007)
A recepção da Declaração Universal dos Direitos do Homem e do Cidadão na Imprensa Portuguesa no ano de 1789
Creators: name: Morgado, Isabel Salema
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Corria o ano de 1789 e em França sucediam-se os acontecimentos revolucionários que propiciariam a passagem do Antigo Regime a uma monarquia constitucionalista. Imprimiam-se em Portugal os periódicos noticiosos “Gazeta de Lisboa” e “Jornal Enciclopédico”e lia-se o papel volante “Notícias de Madrid”. D. Maria I ocupava o trono, tendo por ministro do Reino José de Seabra da Silva e como intendente-geral da Polícia da Corte e do Reino Pina Manique. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
DEVELOPING SPEAKING SKILLS IN MIXED CLASSES
Creators: name: Urolova, Khadicha
Publisher: name: Zenodo
Year: 2023

description: This article discusses the importance of communication skills, especially speaking skills of English, in all spheres of life. Moreover, the benefits or advantages of speaking skills in grabbing the opportunities in global market are discussed comprehensively. This article emphasizes the role of a teacher in enhancing learners' speaking skills by applying various methods, techniques and approaches in English language classrooms.
The end-to-end testbed of the Optical Metrology System on-board LISA Pathfinder
Creators: name: Steier, Frank
name: Cervantes, Felipe Guzmán
name: Marín, Antonio F. García
name: Gerardi, Domenico
name: Heinzel, Gerhard
name: Danzmann, Karsten
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: LISA Pathfinder is a technology demonstration mission for the Laser Interferometer Space Antenna (LISA). The main experiment on-board LISA Pathfinder is the so-called LISA Technology Package (LTP) which has the aim to measure the differential acceleration between two free-falling test masses with an accuracy of 3x10^(-14) ms^(-2)/sqrt[Hz] between 1 mHz and 30 mHz. This measurement is performed interferometrically by the Optical Metrology System (OMS) on-board LISA Pathfinder. In this paper we present the development of an experimental end-to-end testbed of the entire OMS. It includes the interferometer and its sub-units, the interferometer back-end which is a phasemeter and the processing of the phasemeter output data. Furthermore, 3-axes piezo actuated mirrors are used instead of the free-falling test masses for the characterisation of the dynamic behaviour of the system and some parts of the Drag-free and Attitude Control System (DFACS) which controls the test masses and the satellite. The end-to-end testbed includes all parts of the LTP that can reasonably be tested on earth without free-falling test masses. At its present status it consists mainly of breadboard components. Some of those have already been replaced by Engineering Models of the LTP experiment. In the next steps, further Engineering Models and Flight Models will also be inserted in this testbed and tested against well characterised breadboard components. The presented testbed is an important reference for the unit tests and can also be used for validation of the on-board experiment during the mission.
A Comunicação Política do XVII Governo de Portugal
Creators: name: Santos, Hália Costa
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: O objecto deste estudo é a política de comunicação do XVII Governo de Portugal, eleito em Fevereiro de 2005 com maioria absoluta. Desde a vitória nas urnas que o secretário-geral do Partido Socialista, José Sócrates, se pautou por uma conduta de silêncio. A formação do Governo foi feita de forma resguardada, sem uma intervenção directa dos media. A acção política desde Governo, pelo menos nos três primeiros meses de existência, pareceu não depender directamente da comunicação para o exterior. Ou seja, não parece haver uma transformação das medidas em espectáculo, como acontecia no passado. A questão que se coloca é: quais são as prioridades em termos de política de comunicação deste Governo? É a esta questão global que se vai tentar responder, subdividindo-a noutros aspectos. Nomeadamente a tentativa de confirmação das seguintes hipóteses: 1.A estratégia de comunicação do Governo é claramente diferente da que tinha o Governo anterior. 2.A intenção do Governo é fazer com que os seus líderes e os seus assessores de imprensa apareçam o menos possível. 3.A presença do Governo nos media, verificada, a título de exemplo, num diário de referência, durante os seus dois primeiros meses de actividade, é moderada. 4.Os jornalistas reconhecem que a imagem do Governo que passou nos primeiros meses o favorece. Para além de contextualização teórica, esta investigação baseia-se em três vertentes: entrevista semiestruturada ao ministro da Presidência, Pedro da Silva Pereira; questionário a directores e editores dos media; análise de um diário de referência (Diário de Notícias).
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Texto introdutório
Creators: name: Correia, João Carlos
name: Santos, Rogério
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: Em Portugal, tem-se verificado a ausência permanente de uma área de investigação que especificamente assuma a problemática da Comunicação e Política nos fóruns que geralmente se dedicam aos estudos comunicacionais. Poderá, à laia de explicação, sustentar-se que essa ausência manifesta, eventualmente, um receio do ecletismo, dada a vastidão que estes dois conceitos, pela sua monumentalidade, obviamente convocam. Porém, epistemologicamente, já não constitui uma surpresa dizer-se que a delimitação de um corpo de saberes se vai afirmando pela presença dos conhecimentos e saberes efectivamente presentes nas realidades institucionais que o corporizam: revistas, grupos de trabalho, projectos, escolas, etc. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
Virulence of a Predominant Community-Associated Methicillin-resistant Staphylococcus aureus Strain USA300 in a Murine Skin Infection Model
Creators: name: Zhang, Jianbo
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA)
subject: USA300
subject: dermonecrosis
subject: mouse skin infection model
subject: α-hemolysin (Hla)

description: USA300 is a predominant and highly virulent community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) strain that is a leading cause of skin and soft tissue infections. Herein a murine skin infection model was established to differentiate USA300 virulence from other MRSA strains, and reveal mechanisms contributing to USA300 hypervirulence. In this model, USA300 uniformly presented as dermonecrosis while control strains caused localized skin infection (non-dermonecrosis), which mimicked the key clinical characteristics. It was also observed that the dermonecrosis induced by USA300 was associated with significantly increased neutrophil recruitment and increased production of cytokines/chemokines associated with disease severity. The α-hemolysin (Hla) depletion not only reduced USA300 wildtype virulence in causing skin lesions, but also demonstrated significant effects on reducing neutrophil recruitment and altering local cytokines/chemokines profile. These results suggest that USA300 Hla may induce host response to cause severe skin lesions. This observation may open new opportunities for therapeutic interventions.
Uma dinâmica sistémica de direcção e controle dos Processos de Comunicação ao serviço da Missão Institucional
Creators: name: Lopes, Conceição
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: A presente comunicação expõe à crítica um sistema dinâmico interaccionista de direcção e controle dos processos de comunicação institucional construído a partir de um enquadramento teórico e da observação participante sobre a realidade empírica da comunicação institucional. Refere-se, precisamente, ao que de comum existe em qualquer classe de instituição e nas organizações por ela produzidas, e exprime-se de acordo com a perspectiva sistémica da comunicação orquestral configurando diversos subsistemas e as diversas instâncias da interacção corelacionados como um todo, em interdependência permanente não somativa de acções, transacções, reacções e coproduções. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”
A grid of NLTE corrections for magnesium and calcium in late-type giant and supergiant stars: application to Gaia
Creators: name: Merle, Thibault
name: Thévenin, Frédéric
name: Pichon, Bernard
name: Bigot, Lionel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate NLTE effects for magnesium and calcium in the atmospheres of late-type giant and supergiant stars. The aim of this paper is to provide a grid of NLTE/LTE equivalent width ratios W/W* of Mg and Ca lines for the following range of stellar parameters: Teff in [3500, 5250] K, log g in [0.5, 2.0] dex and [Fe/H] in [-4.0, 0.5] dex. We use realistic model atoms with the best physics available and taking into account the fine structure. The Mg and Ca lines of interest are in optical and near IR ranges. A special interest concerns the lines in the Gaia spectrograph (RVS) wavelength domain [8470, 8740] A. The NLTE corrections are provided as function of stellar parameters in an electronic table as well as in a polynomial form for the Gaia/RVS lines.
description: 27 pages, 19 figures and 11 tables. Also on-line data; MNRAS (2011) 0000
Funding classical music: a comparison of Norwegian public policy and practitioner perspectives
Creators: name: Meling, Ådne
Publisher: name: Loughborough University
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology

description: This thesis examines ways in which public funding of the classical music sector is legitimised by the Norwegian public sector and by classical music practitioners working in Norway. The thesis examines public policy documents ssued by public authorities on the three levels of government in Norway, and the funding rationales that are expressed in these. With regards to the practitioner perspective, the thesis is informed by 37 in-depth semi-structured interviews of classical music practitioners. The thesis contributes to knowledge within the research area of cultural policy studies in three different ways. First, the thesis provides a new way of categorising funding rationales for the arts. This categorisation is built on a systematic review of the empirical material used in the thesis, and it is informed by formal requirements of typologies. The thesis ﬁnds that the funding is underpinned by three forms of rationales: Equality, collective well-being and the intrinsic value of art. Secondly, the thesis contributes to knowledge about the relationship between public funding rationales for the classical music sector that are expressed by practitioners and by the Norwegian public sector, respectively. The rationales expressed by practitioners and public authorities are compared within the structure of a thematic analysis. The main themes of thisanalysis are the three aforementioned rationales: Equality, collective well-being and the intrinsic value of art. The interviewees generally expressed a stronger preference for the equality rationale, and a more spiritual conception of the intrinsic value of art, than the Norwegian public sector. On the other hand, the creative economy rationale, which isconsidered an important rationale by the Norwegian public sector for the promotion of collective well-being, was considered less relevant by the interviewees. Thirdly, the thesis discusses possible interpretations of the viewpoints expressed by the interviewees and by the public sector. More speciﬁcally, the thesis discusses possible ways of understanding how some general worldviews might inform the interviewees’ ways of legitimising public funding of the sector within which they are employed, and possible waysof understanding why the interviewees emphasised other public funding rationales than the Norwegian public sector does.
Relações Públicas nas Organizações Beneficentes: um caminho para o Desenvolvimento
Creators: name: Lisboa, Wellington Teixeira
Publisher: name: SOPCOM: Associação Portuguesa de Ciências da Comunicação
Year: 2005

description: O cenário contemporâneo aponta para a preeminente necessidade de organizações beneficentes actuarem no processo de desenvolvimento social, especialmente em países cuja população encontra dificuldades de sobrevivência. Constata-se a multiplicação desse tipo de organização – que surge como resultado da iniciativa de indivíduos ou grupos para implementar acções de interesse público – actuando em meio às transformações que as sociedades sofrem e exigem. Ao mesmo tempo, o sector empresarial vem intensificando o investimento em questões públicas e assumindo-o como uma estratégia para garantia de credibilidade; e a prática do voluntariado vem igualmente se avultando, principalmente após 2001, considerado o Ano Internacional do Voluntariado. (...)
description: SOPCOM: Associação Portuguesa de Ciências da Comunicação, 2005: 4º SOPCOM: “Repensar os Media: Novos Contextos da Comunicação e da Informação”