cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimising the nutrient specifications of manufactured feeds for farmed juvenile greenlip abalone (Haliotis laevigata Donovan)
Creators: name: Coote, TA
Publisher: name: University Of Tasmania
Year: 2023

description: A series of experiments were conducted to investigate the protein, energy and lysine requirements of greenlip abalone Haliotis laevigata. An initial experiment estimated the optimal crude protein requirement. Digestibility coefficients of the protein and energy components of feed ingredients were then estimated and used to formulate diets to investigate the optimal dietary ratio of digestible protein to digestible energy and the effect these parameters have on tissue quality in abalone. Finally, the lysine requirement of greenlip abalone was estimated using two methods of lysine supplementation. The first experiment involved feeding a series of semi-purified diets in which the essential amino acid profile was similar to that of the soft tissue of abalone. Abalone grew fastest at a crude protein level of 20.1%. Excess dietary protein reduced the growth rate. The optimal digestible protein:digestible energy ratio was estimated at 14.4 gDP.M.VDE. Leaching of essential amino acids over 24 hours immersion ranged from 26-54%. The apparent and true digestibility coefficients of the protein and energy components of five feedstuffs were estimated. Defatted soyflour provided the most digestible protein (96.7% digestible). Pre-gelled starch provided the most digestible energy (80.6%). Cost analysis indicated that defatted soyflour was the most costeffective source of protein and energy of the feedstuffs studied. In a factorial experiment, abalone were fed diets at ten levels of protein and two levels of energy. The optimal dietary digestible protein level was estimated at only 13%, and the optimal ratio of digestible protein:digestible energy between `12.3-17.9 g.M.J^-1`. Abalone grew poorly on diets with fish oil levels of 6.0 - 9.0%, although their growth rate increased when returned to a commercial diet containing less oil. The composition of abalone foot muscle and, to a lesser extent, viscera, was affected by dietary protein level and, in some cases, by dietary energy level. Carcass partitioning revealed that meat yield was also affected by dietary protein level. The lysine requirement of greenlip abalone was determined using two methods of lysine supplementation; the addition of free L-lysine-hydrochloride to diets and the use of gluten enriched with covalently-bound lysine. Abalone showed a linear response to free-lysine, and a curvilinear response to covalently-bound lysine. The former method was therefore unable to produce an estimate of dietary lysine requirement. Use of covalently-bound lysine predicted that maximal growth occurred when lysine accounted for 3.9% of crude protein.
Measurement-based quantum computation
Creators: name: Briegel, H. J.
name: Browne, D. E.
name: Dür, W.
name: Raussendorf, R.
name: Nest, M. Van den
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computation offers a promising new kind of information processing, where the non-classical features of quantum mechanics can be harnessed and exploited. A number of models of quantum computation exist, including the now well-studied quantum circuit model. Although these models have been shown to be formally equivalent, their underlying elementary concepts and the requirements for their practical realization can differ significantly. The new paradigm of measurement-based quantum computation, where the processing of quantum information takes place by rounds of simple measurements on qubits prepared in a highly entangled state, is particularly exciting in this regard. In this article we discuss a number of recent developments in measurement-based quantum computation in both fundamental and practical issues, in particular regarding the power of quantum computation, the protection against noise (fault tolerance) and steps toward experimental realization. Moreover, we highlight a number of surprising connections between this field and other branches of physics and mathematics.
Elevated 4R-tau in astrocytes from asymptomatic carriers of the MAPT 10+16 intronic mutation.
Creators: name: Setó-Salvia, Núria
name: Esteras, Noemi
name: de Silva, Rohan
name: de Pablo-Fernandez, Eduardo
name: Arber, Charles
name: Toomey, Christina E
name: Polke, James M
name: Morris, Huw R
name: Rohrer, Jonathan D
name: Abramov, Andrey Y
name: Patani, Rickie
name: Wray, Selina
name: Warner, Thomas T
Publisher: name: The Francis Crick Institute
Year: 2022
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine
subject: Stem Cells
subject: Cell Biology

description: The microtubule-associated protein tau gene (MAPT) 10+16 intronic mutation causes frontotemporal lobar degeneration (FTLD) by increasing expression of four-repeat (4R)-tau isoforms. We investigated the potential role for astrocytes in the pathogenesis of FTLD by studying the expression of 4R-tau. We derived astrocytes and neurons from induced pluripotent stem cells from two asymptomatic 10+16 carriers which, compared to controls, showed persistently increased 4R:3R-tau transcript and protein ratios in both cell types. However, beyond 300 days culture, 10+16 neurons showed less marked increase of this 4R:3R-tau transcript ratio compared to astrocytes. Interestingly, throughout maturation, both 10+16 carriers consistently displayed different 4R:3R-tau transcript and protein ratios. These elevated levels of 4R-tau in astrocytes implicate glial cells in the pathogenic process and also suggests a cell-type-specific regulation and may inform and help on treatment of pre-clinical tauopathies.
Spinor condensate of $^{87}$Rb as a dipolar gas
Creators: name: Świsłocki, Tomasz
name: Brewczyk, Mirosław
name: Gajda, Mariusz
name: Rzążewski, Kazimierz
Publisher: name: arXiv
Year: 2009
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider a spinor condensate of $^{87}$Rb atoms in F=1 hyperfine state confined in an optical dipole trap. Putting initially all atoms in $m_F=0$ component we find that the system evolves towards a state of thermal equilibrium with kinetic energy equally distributed among all magnetic components. We show that this process is dominated by the dipolar interaction of magnetic spins rather than spin mixing contact potential. Our results show that because of a dynamical separation of magnetic components the spin mixing dynamics in $^{87}$Rb condensate is governed by dipolar interaction which plays no role in a single component rubidium system in a magnetic trap.
Mechanical power remote transmission
Creators: name: Flores, António Manuel Luzano De Quadros
Publisher: name: Neutro à Terra
Year: 2021

description: Remote transmission of mechanical energy would certainly be a dream two centuries ago. Nowadays we live with it and we may not even realize that we use mechanical energy wherever we want, but that it was actually produced hundreds, if not thousands of miles away. The transmission of mechanical energy from places where it is available to places where it is necessary, is nowadays achieved by means of machines that transform mechanical energy into electrical and electrical into mechanical energy. Electromagnetism plays a fundamental role in the conversion of energy and their understanding is important to have a complete mastery of the subject. The magnetic field that involves the operation of the electric machines can be originated in permanente magnets or can be created by coils. The approach to magnetism created by permanent magnets or coils is usually based on the observable effects and not on the atomic model explanation of these phenomena, using arguments associated with experimental observations, such as "equal poles repel" or "lines of magnetism are closed", without actually giving a physical interpretation. The purpose of this article is to explain the atomic processes associated with the remote transmission of mechanical energy related to magnetic and electrical phenomena, making clear and more transparent concepts such as magnetic poles, attraction / magnetic repulsion interaction, magnetic field, flow, induction, etc.
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
Energy storage in isolated electrical system
Creators: name: Miguel, Miguel José Rodrigues Teixeira
name: Nogueira, Teresa Alexandra Ferreira Mourão Pinto
Publisher: name: Neutro à Terra
Year: 2021

description: Energy storage has become a key issue in management of any renewable energy system. That is even more important in an isolated electrical system, as is the case with island system, due to the inherent fluctuating operation and inaccurate energy forecast. The growth of the decentralized generation in an isolated electrical grid means load stability problems and requires energy storage as a potential solution to guarantee safety and reliability standards. The study described in this paper highlights the need to store energy in Madeira island electrical system and evaluate the technical and environment benefits with the introduction of batteries to strengthen power network. A simulation tool was developed, suitable to quantify the impact of batteries in wind energy and thermal power plants existing technologies. This tool also allows the graphical analysis of the daily production, as well as the evolution of the power and energy in battery.
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
МНОГОЯЗЫЧНАЯ СИСТЕМА СОЗДАНИЯ ПРОДУКЦИОННЫХ БАЗ ЗНАНИЙ ДЛЯ ИНТЕЛЛЕКТУАЛЬНЫХ МЕТОДОВ ПРОЕКТИРОВАНИЯ С АВТОМАТИЧЕСКИМ ПРОГРАММИРОВАНИЕМ
Creators: name: Маняшин, Александр
Publisher: name: ООО Цифра
Year: 2023
Subjects: Industry 5.0
digital manufacturing
Internet of Knowledge
Internet of Things
integrated systems
Индустрия 5.0
цифровые производства
Интернет знаний
Интернет вещей
интегрированные системы

description: Международный научно-исследовательский журнал, Выпуск 12 (138) 2023
Reforço de potência de Venda Nova III
Creators: name: Ribeiro, Nuno Eduardo
Publisher: name: Neutro à Terra
Year: 2021

description: O projeto de Reforço de potência de Venda Nova III(VNIII) é o último projeto contruído de uma série de projetos hidroelétricos construídos na zona de Venda Nova , situados na serra do Gerês, em que o primeiro projeto, Venda Nova iniciou produção de energia elétrica em 1951. Todos os projeto deste empreendimento interligam, através de condutas com água, os rios Cávado e Rabagão. O projeto VNIII tem instalados dois grupos reversíveis com uma potência de cerca 495 MVA cada. Este artigo tem como objetivo descrever os principais fornecimentos, equipamentos, envolvidos na construção de um dos principais projeto desenvolvidos em Portugal, o projeto de Reforço de potência de Venda Nova III. Trabalho com suporte em documentação do projeto de execução de Venda Nova III, Site da EDP produção.
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
Turbulent dynamos with shear and fractional helicity
Creators: name: Käpylä, P. J.
name: Brandenburg, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Dynamo action owing to helically forced turbulence and large-scale shear is studied using direct numerical simulations. The resulting magnetic field displays propagating wave-like behavior. This behavior can be modelled in terms of an αΩdynamo. In most cases super-equipartition fields are generated. By varying the fraction of helicity of the turbulence the regeneration of poloidal fields via the helicity effect (corresponding to the α-effect) is regulated. The saturation level of the magnetic field in the numerical models is consistent with a linear dependence on the ratio of the fractional helicities of the small and large-scale fields, as predicted by a simple nonlinear mean-field model. As the magnetic Reynolds number (Rm) based on the wavenumber of the energy-carrying eddies is increased from 1 to 180, the cycle frequency of the large-scale field is found to decrease by a factor of about 6 in cases where the turbulence is fully helical. This is interpreted in terms of the turbulent magnetic diffusivity, which is found to be only weakly dependent on Rm.
description: 8 pages, 11 figures, changed to match published version
Quantum Process Tomography of a Universal Entangling Gate Implemented with Josephson Phase Qubits
Creators: name: Bialczak, Radoslaw C.
name: Ansmann, Markus
name: Hofheinz, Max
name: Lucero, Erik
name: Neeley, Matthew
name: O'Connell, Aaron
name: Sank, Daniel
name: Wang, Haohua
name: Wenner, James
name: Steffen, Matthias
name: Cleland, Andrew
name: Martinis, John
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum logic gates must perform properly when operating on their standard input basis states, as well as when operating on complex superpositions of these states. Experiments using superconducting qubits have validated the truth table for particular implementations of e.g. the controlled-NOT gate [1,2], but have not fully characterized gate operation for arbitrary superpositions of input states. Here we demonstrate the use of quantum process tomography (QPT) [3,4] to fully characterize the performance of a universal entangling gate between two superconducting quantum bits. Process tomography permits complete gate analysis, but requires precise preparation of arbitrary input states, control over the subsequent qubit interaction, and simultaneous single-shot measurement of the output states. We use QPT to measure the fidelity of the entangling gate and to quantify the decoherence mechanisms affecting the gate performance. In addition to demonstrating a promising fidelity, our entangling gate has a on/off ratio of 300, a level of adjustable coupling that will become a requirement for future high-fidelity devices. This is the first solid-state demonstration of QPT in a two-qubit system, as solid-state process tomography has previously only been demonstrated with single qubits [5,6].
Non-radial oscillations in the red giant HR7349 measured by CoRoT
Creators: name: Carrier, F.
name: De Ridder, J.
name: Baudin, F.
name: Barban, C.
name: Hatzes, A. P.
name: Hekker, S.
name: Kallinger, T.
name: Miglio, A.
name: Montalban, J.
name: Morel, T.
name: Weiss, W. W.
name: Auvergne, M.
name: Baglin, A.
name: Catala, C.
name: Michel, E.
name: Samadi, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Convection in red giant stars excites resonant acoustic waves whose frequencies depend on the sound speed inside the star, which in turn depends on the properties of the stellar interior. Therefore, asteroseismology is the most robust available method for probing the internal structure of red giant stars. Solar-like oscillations in the red giant HR7349 are investigated. Our study is based on a time series of 380760 photometric measurements spread over 5 months obtained with the CoRoT satellite. Mode parameters were estimated using maximum likelihood estimation of the power spectrum. The power spectrum of the high-precision time series clearly exhibits several identifiable peaks between 19 and 40 uHz showing regularity with a mean large and small spacing of Dnu = 3.47+-0.12 uHz and dnu_02 = 0.65+-0.10 uHz. Nineteen individual modes are identified with amplitudes in the range from 35 to 115 ppm. The mode damping time is estimated to be 14.7+4.7-2.9 days.
description: 8 pages, A&A accepted
Keep medical students moving: Using lean methodology to adapt a student-driven wellness program during the COVID-19 pandemic
Creators: name: Ally, Syeda Akila
name: Wellness, Student
Publisher: name: F1000 Research Limited
Year: 2023

description: A no-cost student-led and designed intervention to increase fitness of medical students that adapted through lean methodology and helped build connections virtually during the early days of the covid-19 pandemic.
Conceção de um sistema fotovoltaico híbrido: térmico e elétrico
Creators: name: Maurício, José Adelino Marçal
name: Nogueira, Teresa Alexandra Ferreira Mourão Pinto
Publisher: name: Neutro à Terra
Year: 2021

description: O rendimento dos painéis fotovoltaicos decresce com o aumento da temperatura de funcionamento, aspeto particularmente relevante em locais onde a temperatura diária máxima atinge temperaturas elevadas, como é o caso de Portugal. Este facto tem implicações no dimensionamento de um painel fotovoltaico, desde a fase de projeto no cálculo das correntes e tensões de operação dos equipamentos a jusante do painel, até à sua operação, com influência relevante nas condições económicas de exploração. Um rendimento elétrico inferior implica mais tempo para amortizar o painel, resultando num projeto de investimento menos atrativo. Este estudo propõe a conceção de um sistema de arrefecimento térmico do painel, com base na circulação forçada de água, sendo apresentados benefícios que justificam a sua exploração. A utilização do princípio de extração do calor pode ser integrada com sistemas de aquecimento de águas (painéis solares) existentes nos edifícios, permitindo diluir os custos da solução e aumentar o rendimento global elétrico e térmico através de um pré-aquecimento.
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
An optical spectroscopic survey of the 3CR sample of radio galaxies with z<0.3. I. Presentation of the data
Creators: name: Buttiglione, Sara
name: Capetti, Alessandro
name: Celotti, Annalisa
name: Axon, David J.
name: Chiaberge, Marco
name: Macchetto, F. Duccio
name: Sparks, William B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a homogeneous and 92 % complete dataset of optical nuclear spectra for the 113 3CR radio sources with redshifts < 0.3, obtained with the Telescopio Nazionale Galileo. For these sources we could obtain uniform and uninterrupted coverage of the key spectroscopic optical diagnostics. The observed sample, including powerful classical FR II radio-galaxies and FR I, together spanning four orders of magnitude in radio-luminosity, provides a broad representation of the spectroscopic properties of radio galaxies. In this first paper we present an atlas of the spectra obtained, provide measurements of the diagnostic emission line ratios, and identify active nuclei with broad line emission. These data will be used in follow-up papers to address the connection between the optical spectral characteristics and the multiwavelength properties of the sample.
description: Accepted for publication in A&A. Includes 104 gif figures
The effects of the Spanish Civil War on the writers of the British left : an investigation of political and literary interaction
Creators: name: Bonner, FJ
Publisher: name: University Of Tasmania
Year: 2023

description: There are times in the history of literature when writers are like hermits and retreat into themselves, writing of personal matters, of fantasy, and shunning any relationship with the contemporary world. There are other times, howrever, when the writers become intensely involved with political movements. This interaction of literary and political viewpoints is generally beneficial to both literature and politics, but usually of more benefit to the latter. Such a time of literary/political interaction occurred in the 1930s prior to and during the Spanish Civil War. It was the war in Spain which brought the political involvement of the writers to a peak, but it was also this war which helped to destroy it. In the Twenties the British people were passing through a period of intense revulsion from war. The First World War had made people realize the horrors of fighting, and it was hoped that by the institution of the League of Nations, war would no longer be the final means of settling disputes among nations. The main object of the study is to investigate the political ideas of various British writers before, during and after a crisis. The chosen crisis is the Spanish Civil War and the writers on whom it had the greatest effect were the young, politically-aware poets, novelists, dramatists and critics who first began to publish their work in the early 1930s. The study will attempt to demonstrate the interdependence of politics and literature in the Thirties and the importance of literary figures to a political movement. It is hoped to reach a final conclusion that writers become important and influential on the eve of a crisis, but that their experience of their own impotence during a war, contrasted with their influence beforehand, causes them to become politically indifferent following the crisis. To achieve this conclusion, it will first be shown that the Thirties witnessed a development of political consciousness among the young writers, the Spanish Civil War intensified and crystallized this political consciousness, but when the young writers were exposed to the harsh political realities of the Spanish Civil War, they became aware of their impotence and generally retreated from politics. However, an attempt will be made to show that these writers were important as propagandists or publicists for their political beliefs whether or not they consciously wrote propaganda.
Cultural diversity and multilingualism foster cultural competency in health professions students
Creators: name: Hakyoung Kim
name: Ihara, Keiko
name: Stearns, Dana
name: McWatt, Sean
name: Green, Alexander
name: Kunzel, Carol
name: Lee, Chang
name: Brassett, Cecilia
name: Geoffray Noel
name: Wu, Anette
Publisher: name: F1000 Research Limited
Year: 2023

description: Background: During this time of globalization, intercultural competency (IC) skills are essential in the health professions. However, health professions students across the globe have different cultural characteristics, and IC learning varies among populations with diverse cultural backgrounds. This study explored demographic factors affecting IC learning to improve the integration of IC into global medical curricula.

 

Summary of work: Health professions students (medical, dental, nursing, biomedical, and health sciences) from 20 universities in 20 countries across four continents participated in a four-month online exchange program. Students from different backgrounds networked with each other, sharing cultural values, comparing medical curricula, and discussing current healthcare issues with respect to diverse systems and cultures. Validated questionnaires assessing IC skills were provided, and the results were analyzed for demographic differences in IC skills and preparedness, pre- and post-program, using R version 4.0.3. 

 

Summary of results: Analyses of pre- (n = 305) and post-program (n = 67) responses to the 40 self-graded questionnaire items targeting levels of IC, attitudes towards varying cultures, IC preparedness, and IC skills revealed statistically significant differences among two demographic factors: 1) in ten of the questions relating to student attitudes towards cultural relevance in healthcare and IC skills, students from Asian countries scored lower in the pre-program questionnaire (range of p < 0.001 to p = 0.041), and 2) multilingual students scored higher on six of the questions related to IC preparedness and skills compared to monolingual students (range of p < 0.001 to p = 0.045). 

 

Discussion and Conclusion: The lower pre-program scores among students from Asian countries could be due to the more homogenous populations in those countries and a lack of cultural diversity in their education. In such culturally homogenous countries with low intercultural exposure, IC should be further emphasized and widely integrated in medical curricula. Further, higher IC preparedness scores among multilingual students could indicate that learning additional languages can foster IC through exposure to those different cultures. 

 

Take home message: Accounting for cultural and demographic differences in health professions curricula is central to improving IC skills and preparedness in future healthcare providers across the globe.
A critical reassessment of the evidence of long swings in residential construction in Great Britain, 1860-1940 : with special emphasis on the local experience in Lancashire and South Wales
Creators: name: Olesen, Richard Mogens
Publisher: name: University of British Columbia
Year: 2011

description: This thesis examines the evidence of long swings in British house-building from 1860 to 1914. The central issue of the present inquiry concerns the existence of cyclical fluctuations in residential construction and the nature of the causal mechanisms by which these phenomena might be explained. A general analysis of the structure of the housing market and the institutional peculiarities which give rise to the lagged adjustment process by which changes in demand are translated into changes in the supply of housing accommodation suggests that the appropriate level at which to analyze the behavior of house-building is the regional or local level. The importance of specifying relationships whose underlying behavioral implications are consistent with the level of aggregation, is stressed. With this in mind, a general regional model of housebuilding activity is developed and its theoretical solutions explored. This provides a conceptual analytical framework used subsequently to study the regional (and local) housebuilding experience of South Wales and South-east Lancashire. These disaggregated regional studies show local patterns of residential construction to exhibit a wide range of variation. Operative causal mechanisms found to exist at this level of analysis disclose significant regional differences which seriously question the validity of the macro-causal relationships which have been offered to explain fluctuations in British house-building. The limits of the present analysis and the tentative nature of our conclusions are emphasized. With this in mind, there are suggested a number of areas which require far more intensive study than they have received in the past. Only when we learn more about the inter-relationships in the pattern of regional development will we be able to more fully understand the mechanisms of the long swings.
D6.1 Collaboration with EU Projects and initiatives (1)
Creators: name: Tsantakis, Manolis
Publisher: name: Zenodo
Year: 2021

description: ENVISION has established connections with 8 relevant projects by carrying out introductory online meetings with projects’ presentations and initial discussions and exchange of views. The fields of potential collaboration that were proposed by ENVISION include joint meetings, events and activities, formal provision of advice, exchange of information, joint use of EC services and cooperation regarding the projects’ available communication channels. The main outcome is that all 8 projects are open for further discussions in due course. However, there are also fields already recognised as having a strong potential and relevant discussions were quite focused.
 The next relevant deliverable D6.5 “Collaboration with EU projects and initiatives (2)” is due in month 20 and will further elaborate on the solutions derived from the projects, the ENVISION strengths and potential contributions from the other projects.
Comparação de tecnologias em veículos automóveis
Creators: name: Andrade, António Carvalho De
Publisher: name: Neutro à Terra
Year: 2021

description: O domínio do Motor de Combustão Interna (MCI) começa a ser ameaçado pelo aparecimento das tecnologias Zero Emissão (ZE). Há mesmo países que já anunciaram a intensão de proibir a comercialização dos automóveis com MCI a partir de 2030, devido às suas emissões poluentes. Neste artigo são analisadas as duas tecnologias ZE disponíveis e comparadas com o MCI [1].
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
Symmetric Space Cartan Connections and Gravity in Three and Four Dimensions
Creators: name: Wise, Derek K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Einstein gravity in both 3 and 4 dimensions, as well as some interesting generalizations, can be written as gauge theories in which the connection is a Cartan connection for geometry modeled on a symmetric space. The relevant models in 3 dimensions include Einstein gravity in Chern-Simons form, as well as a new formulation of topologically massive gravity, with arbitrary cosmological constant, as a single constrained Chern-Simons action. In 4 dimensions the main model of interest is MacDowell-Mansouri gravity, generalized to include the Immirzi parameter in a natural way. I formulate these theories in Cartan geometric language, emphasizing also the role played by the symmetric space structure of the model. I also explain how, from the perspective of these Cartan-geometric formulations, both the topological mass in 3d and the Immirzi parameter in 4d are the result of non-simplicity of the Lorentz Lie algebra so(3,1) and its relatives. Finally, I suggest how the language of Cartan geometry provides a guiding principle for elegantly reformulating any 'gauge theory of geometry'.
description: Article prepared for special journal issue dedicated to Elie Cartan
A tecnologia LED nas redes de iluminação pública resultados de um caso prático
Creators: name: Camões, Maria Madalena Rodrigues
name: Nogueira, Teresa Alexandra Ferreira Mourão Pinto
Publisher: name: Neutro à Terra
Year: 2021

description: Este artigo tem por objetivo demonstrar que a introdução de luminárias de tecnologia LED nas redes de iluminação pública conduz a benefícios económicos e ambientais sem prejuízo da qualidade de serviço prestada aos utentes do espaço público. O artigo tem por base um projeto que foi implementado, permitindo constatar os efetivos benefícios inerentes à substituição das luminárias convencionais por luminárias LED. São apresentados os resultados da sua aplicação a um caso prático, um exemplo real relativo a um município português.
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
Radio and X-ray study of two multi-shell Supernova Remnants: Kes79 and G352.7-0.1
Creators: name: Giacani, E.
name: Smith, M. J. S.
name: Dubner, G.
name: Loiseau, N.
name: Castelletti, G.
name: Paron, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate two multi-shell galactic supernova remnants (SNRs), Kes79 and G352.7-0.1, to understand the causes of such morphology. The research was carried out based on new and reprocessed archival VLA observations and XMM-Newton archival data. The surrounding was investigated based on data extracted from the HI Canadian Galactic Plane Survey, the 13^CO Galactic Ring Survey and the HI Southern Galactic Plane Survey. The present study revealed that the overall morphology of both SNRs is the result of the mass-loss history of their respective progenitor stars. Kes79 would be the product of the gravitational collapse of a massive O9 star evolving near a molecular cloud and within the precursor's wind-driven bubble, while G352.7-0.1 would be the result of interactions of the SNR with an asymmetric wind from the progenitor together with projection effects. No radio point source or pulsar wind nebula was found associated with the X-ray pulsar CXOU J185238.6+004020 in Kes79. The X-ray study of G352.7-0.1, on its hand, revealed that most of the thermal X-ray radiation completely fills in the interior of the remnant and originates in heated ejecta. Characteristic parameters, like radio flux, radio spectral index, age, distance, shock velocity, initial energy and luminosity, were estimated for both SNRs.
description: 14 pages, 13 figures. Accepted to be published in Astronomy and Astrophysics
Máquinas Elétricas de Corrente Contínua. Reação Magnética do Induzido e Comutação
Creators: name: Carvalho, José António Beleza
Publisher: name: Neutro à Terra
Year: 2021

description: Na máquina elétrica de corrente contínua (máquina DC) vai manifestar-se a existência de dois campos magnéticos que vão compor-se entre si originando um campo resultante no entre ferro da máquina, cuja amplitude direção e sentido tem fortes consequências no funcionamento da máquina, particularmente no que diz respeito ao fenómeno da comutação da máquina de corrente contínua.
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
Evolution of the curvature perturbation during and after multi-field inflation
Creators: name: Choi, Ki-Young
name: Gong, Jinn-Ouk
name: Jeong, Donghui
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the evolution of the curvature perturbation on the super-horizon scales starting from the inflationary epoch until there remains only a single dynamical degree of freedom, presureless matter, in the universe. We consider the cosmic inflation driven by a multiple number of the inflaton fields, which decay into both radiation and pressureless matter components. We present a complete set of the exact background and perturbation equations which describe the evolution of the universe throughout its history. By applying these equations to the simple but reasonable model of multi-field chaotic inflation, we explicitly show that the total curvature perturbation is continuously varying because of the non-adiabatic components of the curvature perturbation generated by the multiple inflaton fields throughout the whole evolution of the universe. We also provide an useful analytic estimation of the total as well as matter and radiation curvature perturbations, assuming that matter is completely decoupled from radiation from the beginning. The resulting isocurvature perturbation between matter and radiation is at most sub-percent level when the masses of the inflaton fields are distributed between $10^{-6}m_{pl}$ and $10^{-5}m_{pl}$. We find that this result is robust unless we use non-trivial decay rates, and that thus, in general, it is hard to obtain large matter-radiation isocurvature perturbation. Also, by using the $δ{N}$ formalism, we point out that the inflationary calculation, especially when involving multiple inflaton fields, is likely to lose the potentially important post-inflationary evolution which can modify the resulting curvature perturbation.
description: 31 pages, 6 figures, Final version to appear in JCAP. Add calculation of power spectrum and spectral index. We provide more discussion
Analysis of the white--light flickering of the Intermediate Polar V709 Cas with wavelets and Hurst analysis
Creators: name: Tamburini, F.
name: De Martino, D.
name: Bianchini, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We characterize the flickering observed in the optical lightcurve of the Intermediate Polar system V709 Cas by determining its position in the alpha-Sigma as in the Fritz and Bruch (1998) classification scheme. Sigma represents the strength of flickering at a given timescale, while alpha describes the energy distribution of the flickering at different time scales. Here alpha is independently obtained with both the wavelets and the Hurst R/S analysis. The flickering shows self-similarity in the time scale ranging from tens of minutes down to 10 seconds with stochastic persistent memory in time. alpha and Sigma appear anticorrelated. In the alpha-Sigma diagram V709 Cas falls in the region of magnetic systems. Since V709 Cas shows the spin period of the magnetic WD only in the X-ray but not in the optical, we conclude that this method can be used to characterize CV subtypes especially when their classification is uncertain.
description: 6 figures
Editorial
Creators: name: Carvalho, José António Beleza
Publisher: name: Neutro à Terra
Year: 2021

description: Estimados leitoresVoltámos à vossa presença com a vigésima primeira edição da nossa revista semestral. Este semestre um pouco mais tarde que ohabitual, pois os afazeres dos responsáveis pela edição da revista no fim de um ano letivo são sempre muitos e complicados. Noentanto, entendemos que a qualidade dos artigos publicados nesta edição seguramente que compensarão a curiosidade e o interessede todos os nossos habituais leitores, que nos privilegiam com o seu interesse desde o início das nossas publicações. Já são 11 anos emque sem interrupções honramos o compromisso que temos convosco.Ao longo dos últimos anos o interesse pela nossa revista foi crescendo gradualmente, destacando-se o aumento da procura por partede leitores de países estrangeiros. Este facto leva-nos a publicar com alguma regularidade artigos em língua Inglesa, especialmente osde caráter mais científico. Nesta edição publicamos dois artigos em língua Inglesa, um intitulado “Energy Storage in Isolated ElectricalSystem”, baseado num estudo efetuado na ilha da Madeira que analisa os benefícios técnicos e ambientais com a introdução debaterias para fortalecer a rede de energia elétrica, quantificando o impacto das baterias nas tecnologias existentes de energia eólica etermoelétrica.Outro artigo publicado em língua Inglesa, intitulado “Mechanical Power Remote Transmission”, pretende de uma forma simples e claraassociar à transmissão remota de energia os fenómenos eletromagnéticos que justificam a conversão eletromecânica de energia, naforma que ela é atualmente obtida e utilizada.Nesta edição merecem particular destaque os assuntos relacionados com as máquinas elétricas, os veículos elétricos, as energiasrenováveis, as infraestruturas de telecomunicações, e um artigo sobre redes de iluminação pública baseados nas tecnologias inerentesàs lâmpadas LED.Outro assunto muito interessante publicado nesta edição da nossa revista, tem a ver com o projeto de reforço de potência da centralde Venda Nova, intitulada Venda Nova III. Nesta central foram instalados dois grupos assíncronos de indução, reversíveis com umapotência de cerca 495 MVA cada. Neste artigo apresentam-se os principais passos do desenvolvimento do projeto que, neste âmbito,foi inovador a nível mundial.Fazendo votos que esta edição da revista “Neutro à Terra” vá novamente ao encontro das expectativas dos nossos leitores, estessemestre um pouco mais tarde que o habitual, apresento os meus cordiais cumprimentos.
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
Additional file 1 of The DNA demethylation-regulated SFRP2 dictates the progression of endometriosis via activation of the Wnt/β-catenin signaling pathway
Creators: name: Yang, Mei
name: Li, Lin
name: Huang, Xiaojie
name: Xing, Hui
name: Hong, Li
name: Jiang, Chunfan
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1
ITCALC: Desenho e cálculo de infraestruturas de telecomunicações
Creators: name: Martins, Hélder Nelson Moreira
name: Ramos, Sérgio Filipe Carvalho
Publisher: name: Neutro à Terra
Year: 2021

description: No início desta década a TELEVÉS lançou o Software para cálculo de redes ITED (Prescrições e especificações técnicas das Infraestruturas de Telecomunicações em Edifícios) e ITUR (Prescrições e especificações técnicas das infraestruturas de telecomunicações em loteamentos, urbanizações e conjuntos de edifícios), o CAST 60 (conforme figura 1), programa vocacionado para o auxílio ao cálculo de instalações de comunicações eletrónicas, que permitia criar redes de: ITED 2Edição, SMATV (Satellite Master Antenna Television) e CATV (Cable Television, ou Community Antenna Television).
description: Neutro à Terra, N.º 21 (2018): Revista Técnico-Científica (Primeiro Semestre)
Phase I Archaeological Survey of 5,300 Acres and Phase II NRHP Evaluations of 11 Sites. Joint Base McGuire-Dix-Lakehurst. Burlington County, New Jersey. Joint Base McGuire-Dix-Lakehurst
Creators: name: Brown, Christopher
name: Paonessa, Laurie
name: Knepper, Dennis
name: Shields, Carter
name: Rohn, Mackenzie Caldwell
Publisher: name: Versar, Inc.
Year: 2021
Subjects: subject: Burlington County, New Jersey
valueUri: https://core.tdar.org/browse/geographic-keyword/83572/burlington-county-new-jersey
subject: Joint Base McGuire-Dix-Lakehurst
valueUri: https://core.tdar.org/browse/geographic-keyword/85893/joint-base-mcguire-dix-lakehurst
subject: New Jersey (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1367/new-jersey-state-territory
subject: Woodland
valueUri: https://core.tdar.org/browse/culture-keyword/13/woodland
subject: PaleoIndian
valueUri: https://core.tdar.org/browse/culture-keyword/4/paleoindian
subject: Archaic
valueUri: https://core.tdar.org/browse/culture-keyword/8/archaic
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Resource Extraction / Production / Transportation Structure or Features
valueUri: https://core.tdar.org/browse/site-type/272/resource-extraction-production-transportation-structure-or-features
subject: Archaeological Feature
valueUri: https://core.tdar.org/browse/site-type/339/archaeological-feature
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Domestic Structure or Architectural Complex
valueUri: https://core.tdar.org/browse/site-type/251/domestic-structure-or-architectural-complex
subject: Farmstead
valueUri: https://core.tdar.org/browse/other-keyword/135027/farmstead
subject: Fort Dix
valueUri: https://core.tdar.org/browse/other-keyword/169233/fort-dix
subject: Native American
valueUri: https://core.tdar.org/browse/other-keyword/918/native-american
subject: Late Archaic
valueUri: https://core.tdar.org/browse/other-keyword/138779/late-archaic
subject: Woodland
valueUri: https://core.tdar.org/browse/other-keyword/136762/woodland

description: Phase I archaeological survey within 5,303 acres; 11 new sites documented: 6 prehistoric and 5 historical. All of the prehistoric sites represent the Late Archaic through Late Woodland periods. Five prehistoric sites (BU28953, 28BU956, 28BU957, 28BU958, 28BU961) were recommended eligible for inclusion in the NRHP. A single prehistoric site, 28BU954, was recommended not eligible. None of the newly recorded historical sites (28BU955, 28BU959, 28BU960, 28BU962, and 28BU963) were recommended eligible for inclusion in the NRHP. Phase II NRHP eligibility evaluation of 11 archaeological sites. Of these, 4 of 5 prehistoric sites (or the prehistoric components of the sites) evaluated were recommended eligible (28BU250, 28U527, 28BU533, and 28BU538). None of the eight historical sites were recommended eligible for inclusion in the NRHP.
Electronic Coherence Dephasing in Excitonic Molecular Complexes: Role of Markov and Secular Approximations
Creators: name: Olsina, Jan
name: Mancal, Tomas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We compare four different types of equations of motion for reduced density matrix of a system of molecular excitons interacting with thermodynamic bath. All four equations are of second order in the linear system-bath interaction Hamiltonian, with different approximations applied in their derivation. In particular we compare time-nonlocal equations obtained from so-called Nakajima-Zwanzig identity and the time-local equations resulting from the partial ordering prescription of the cummulant expansion. In each of these equations we alternatively apply secular approximation to decouple population and coherence dynamics from each other. We focus on the dynamics of intraband electronic coherences of the excitonic system which can be traced by coherent two-dimensional spectroscopy. We discuss the applicability of the four relaxation theories to simulations of population and coherence dynamics, and identify features of the two-dimensional coherent spectrum that allow us to distinguish time-nonlocal effects.
description: 14 pages, 8 figures
Nursing recruitment in Australia's largest hospital
Creators: name: Sinclair, T
Publisher: name: University Of Tasmania
Year: 2023

description: All hospitals in Australia are challenged by a limited capacity to compete for scarce nursing talent against a backdrop of diminishing national workforce supply. This study seeks to ascertain what factors motivate nurses to apply for positions, what factors influence them to leave their current positions, and what attractors can be put in place to entice them to work in a hospital environment. The participants in this study were all applicants for any type of nursing position at Liverpool Hospital in western Sydney applying between February and September 2011. A questionnaire was distributed to the participants to capture their views and opinions on what attracted them to apply for a job at the case hospital. The questionnaire was designed to measure whether some or all of the attractor strategies devised by the Hospital were successful in attracting them to apply for a position. A total of 480 surveys were distributed to job applicants applying for positions at the Hospital (across all nursing classifications). Of these, 195 were completed and returned, giving a response rate of approximately 41%. The results from the survey provided support of the use of attractor strategies in influencing applicants to apply for a position. The evidence from this research supports the development and implementation of e-marketing strategies as one of the tools in attracting staff, and demonstrated that the development of the Liverpool Hospital website, and a specific recruitment website, was an effective tool in marketing the various attributes of the Hospital that may be effective in attracting staff. The results from this research show that factors which improve employee satisfaction (which is normally associated with retention) can specifically attract applicants to an organisation. These include options such as career progression opportunities, professional development, making one's job more challenging or stimulating, a supportive workplace culture and mentoring and support. This research identified a number of factors that might be generalisable to other hospitals when trying to attract staff to their facilities and, as such, there are a number of potential implications for similar public hospitals.
Mock galaxy redshift catalogues from simulations: implications for Pan-STARRS1
Creators: name: Cai, Yan-Chuan
name: Angulo, Raul E.
name: Baugh, Carlton M.
name: Cole, Shaun
name: Frenk, Carlos S.
name: Jenkins, Adrian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a method for constructing mock galaxy catalogues which are well suited for use in conjunction with large photometric surveys. We use the semi-analytic galaxy formation model of Bower et al. implemented in the Millennium simulation. We apply our method to the specific case of the surveys soon to commence with PS1, the first of 4 telescopes planned for the Pan-STARRS system. PS1 has 5 photometric bands (grizy), and will carry out an all-sky 3pi survey and a medium deep survey (MDS) over 84 sq.deg. We calculate the expected magnitude limits for extended sources in the two surveys. We find that, after 3 years, the 3pi survey will have detected over 10^8 galaxies in all 5 bands, 10 million of which will lie at redshift z>0.9, while the MDS will have detected over 10^7 galaxies with 0.5 million lying at z>2. These numbers at least double if detection in the shallowest band, y is not required. We then evaluate the accuracy of photometric redshifts estimated using an off-the-shelf photo-z code. With the grizy bands alone it is possible to achieve an accuracy in the 3pi survey of Delta z/(1+z)~0.06 for 0.25
description: 23 pages, 18 figures, accepted by MNRAS