cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wide-area monitoring and control utilizing PMU measurements for a system protection scheme
Creators: name: Palizban, Atefeh
Publisher: name: University of British Columbia
Year: 2015

description: The ever increasing complexity of the electrical grid has made it difficult to predict and anticipate contingencies. This is mainly due to the advent of deregulated electricity markets, aging transmission infrastructure and the growing penetration of renewable resources. The wave of blackouts in recent years has made utilities much more aware of the need for power system wide monitoring and control. One of the fundamental requirements to achieve that goal is to have common measurement reference. A few technology enablers have emerged which have led to development of a new kind of measurement paradigm; Phasor Measurement Units, or PMUs. PMUs bear high potential for wide-area system monitoring and control as well for conducting advanced engineering analysis. PMUs can provide time-synchronized high-resolution estimates of voltage and currents (both phase amplitude and angle) as well as frequency and rate of change of frequency. Such measurements, alternatively called synchrophasors, can provide visibility of a power system distributed over a wide geographical area and can be utilized in a multitude of applications including real-time monitoring, advanced power system protection, and advanced control schemes. In this thesis, a new special protection scheme (SPS) is proposed based on synchronized measurements provided by PMUs. An existing remedial action scheme (RAS) protecting for contingencies impacting the tie-line interconnecting the Alcan system to B.C. Hydro, using conventional relays is studied, and a new scheme based on time-synchronized, and high-resolution voltage angle measurements from PMU’s in a Wide-are monitoring system (WAMs) is proposed . In this new scheme, the angles of the buses at large power plants in both systems are examined and used to calculate various criteria based on region center of angle and the kinetic energy function to implement RAS. The results of a number of time domain simulations demonstrate that the proposed scheme can lead to faster operation of the SPS and decreased amount of generation and load shedding in the Alcan system. The achieved speed and efficiency of the proposed scheme in comparison to the existing installed scheme further highlight the opportunity in utilizing PMU measurements in online applications for power system protection and monitoring.
The Virtual Institute for Integrative Biology (VIIB)
Creators: name: Rivera, Gustavo
name: González-Nilo, Fernando
name: Perez-Acle, Tomás
name: Isea, Raul
name: Holmes, David S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences

description: The Virtual Institute for Integrative Biology (VIIB) is a Latin American initiative for achieving global collaborative e-Science in the areas of bioinformatics, genome biology, systems biology, metagenomics, medical applications and nanobiotechnolgy. The scientific agenda of VIIB includes: construction of databases for comparative genomics, the AlterORF database for alternate open reading frames discovery in genomes, bioinformatics services and protein simulations for biotechnological and medical applications. Human resource development has been promoted through co-sponsored students and shared teaching and seminars via video conferencing. E-Science challenges include: interoperability and connectivity concerns, high performance computing limitations, and the development of customized computational frameworks and flexible workflows to efficiently exploit shared resources without causing impediments to the user. Outreach programs include training workshops and classes for high school teachers and students and the new Adopt-a-Gene initiative. The VIIB has proved an effective way for small teams to transcend the critical mass problem, to overcome geographic limitations, to harness the power of large scale, collaborative science and improve the visibility of Latin American science It may provide a useful paradigm for developing further e-Science initiatives in Latin America and other emerging regions.
description: 10 pages, ISBN 978-84-7834-565-6
Isotropization of locally rotationally symmetric Bianchi-I universe in $f(Q)$-gravity
Creators: name: De, Avik
name: Mandal, Sanjay
name: Beh, J. T.
name: Loo, Tee-How
name: Sahoo, P. K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Despite having the somewhat successful description of accelerated cosmology, the early evolution of the universe always challenges mankind. Our promising approach lies in a new class of symmetric teleparallel theory of gravity named $f(Q)$, where the non-metricity scalar $Q$ is responsible for the gravitational interaction, which may resolve some of the issues. To study the early evolution of the universe, we presume an anisotropic locally rotationally symmetric (LRS) Bianchi-I spacetime and derive the motion equations. We discuss the profiles of energy density, equation of state and skewness parameter and observe that our models archive anisotropic spatial geometry in the early phase of the universe with a possible presence of anisotropic fluid and as time goes on, even in the presence of an anisotropic fluid, the universe could approach isotropy due to inflation and the anisotropy of the fluid fades away at the same time.
description: Accepted on 12/01/2022 for publication in the journal EPJC
Parental involvement in children's mathematics learning : a case of a rural community, Ghana
Creators: name: Yaro, Kwesi
Publisher: name: University of British Columbia
Year: 2015

description: Although emergent literature and anecdotal experience indicate the importance of parental involvement in their children’s mathematics learning, there is still a void in literature with regard to involvement of parents with low formal education in their children’s mathematics learning in culturally diverse contexts. In an attempt to address this void, a study that employed socio cultural learning and social constructivist theories investigated how parents with low formal education are involved in their children’s mathematics learning in a rural Community, Ghana. Data was collected from six parents with low formal education, their 8-9 year old children as well as the children’s class teachers through semi-structured individual face to face interviews and home visit observations. Analysis of the data corpus revealed that 1) parents’ mentorship and engagement in local business transactions, were used as learning and evaluation contexts for a child’s mathematics competence; 2) parents perceived giving and receiving correct change as a key indicator of one’s moral standing and mediated children’s mathematics accordingly; 3) parents, teachers and children consider mathematics as a hallmark of future success; 4) parents’ belief that increasing time spent on academic activities improved children’s success, within the examination culture of the context;5) teachers see low formal education as a handicap of parental involvement in children’s mathematics learning; 6) children typically corroborate their parents’ perceived ways of supporting their mathematics learning. These findings are significant and offer insight into how parents with low formal education from a different cultural context are involved in their older children’s mathematics learning. The study adds to the literature on the topic of parental involvement from a non-western context.
Pseudodifferential operators on manifolds: a coordinate-free approach
Creators: name: Mckeag, P.
name: Safarov, Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 58G15, 58G25

description: This is a review of some coordinate-free calculi of pseudodifferential operators developed in the last years. As an application, we use a coordinate-free calculus to obtain new results on the behaviour of the spectral projections of a self-adjoint elliptic second order differential operator under perturbation of coefficients.
description: 19 pages
Azimuthal asymmetries in unpolarized Drell-Yan processes and the Boer-Mulders distributions of antiquarks
Creators: name: Barone, Vincenzo
name: Melis, Stefano
name: Prokudin, Alexei
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using a previous extraction of the quark Boer-Mulders distributions from semiinclusive deep inelastic scattering data, we fit the unpolarized Drell-Yan data on the $\cos 2 ϕ$ asymmetry, determining the antiquark Boer-Mulders distributions. A good agreement with the data is found in the region of low $q_T$, where the transverse-momentum factorization approach applies.
description: 7 pages, 3 figures
Novas descobertas documentais sobre os conflitos religiosos subjacentes à elaboração da primeira tradução da Bíblia em língua portuguesa (1642‑1694)
Creators: name: Fernandes, Luis Henrique Menezes
Publisher: name: Lusitania Sacra
Year: 2013

description: A primeira tradução da Bíblia em língua portuguesa foi elaborada ao longo da segunda metade do século XVII, nas Índias Orientais holandesas, pelo calvinista português João Ferreira A. de Almeida (c 1628‑1691). A bibliografia especializada sobre o seu contexto de produção focaliza, de modo geral, os dados biográficos disponíveis sobre o seu principal idealizador, bem como levantamentos tipográficos sobre as suas inúmeras edições, deixando em segundo plano o conteúdo das diversas fontes primárias correspondentes ao obstinado embate doutrinário católico‑calvinista subjacente à sua elaboração. Assim, supomos que somente a partir de uma análise acurada das obras polemistas produzidas nesse contexto será possível melhor compreender historicamente o significado desse processo de tradução. Neste artigo, de caráter introdutório, nos limitaremos a tecer uma breve avaliação bibliográfica das principais tendências interpretativas a respeito do assunto, para apresentar, em seguida, três relevantes descobertas documentais realizadas, ao longo de nossa pesquisa, sobre a literatura polemista produzida em seu contexto de elaboração.
description: Lusitania Sacra, n. 28 (2013): A Santidade
MPEC 2024-S48 : 2024 SN
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 SN

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
On resonances and bound states of the 't Hooft-Polyakov monopole
Creators: name: Russell, Katie M
name: Schroers, Bernd J
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present a systematic approach to the linearised Yang-Mills-Higgs equations in the background of a 't Hooft-Polyakov monopole and use it to unify and extend previous studies of their spectral properties. We show that a quaternionic formulation allows for a compact and efficient treatment of the linearised equations in the BPS limit of vanishing Higgs self-coupling, and use it to study both scattering and bound states. We focus on the sector of vanishing generalised angular momentum and analyse it numerically, putting zero-energy bound states, Coulomb bound states and infinitely many Feshbach resonances into a coherent picture. We also consider the linearised Yang-Mills-Higgs equations with non-vanishing Higgs self-coupling and confirm the occurrence of Feshbach resonances in this situation.
description: 33 pages, 7 figures
Monitoring nociception during general anesthesia with heart rate variability
Creators: name: Brouse, Chris J.
Publisher: name: University of British Columbia
Year: 2015

description: We have developed a novel real-time cardiorespiratory coherence (CRC) algorithm to monitor nociception during general anesthesia. We have made two novel and significant contributions to the field. We have developed a novel filter for measuring the respiratory sinus arrhythmia (RSA) in the heart rate variability (HRV) in real-time. The filter uses information from a secondary signal source (a respiration rate derived from a respiration signal) to track the RSA as it moves in time and frequency. It then uses this information to dynamically tune the centre frequency and bandwidth of a band-pass filter to isolate and measure the RSA. This filter is very effective at tracking the RSA in time and frequency, and it may provide the most robust measure of RSA yet devised. We have integrated multiple signals and algorithms together into an end-to-end software system for robust continuous real-time nociception monitoring during general anesthesia. The software system incorporates not only our novel RSA filter to measure nociception, but also many peripheral algorithms for detecting and rejecting artifacts in the input signals. The input signals required for real-time nociception monitoring can be extremely noisy, and artifacts are a very significant challenge. To our knowledge, no other nociception monitor includes such robust artifact handling using redundant signal channels. We estimated the sensitivity of our real-time CRC algorithm to nociception and antinociception, and compared it to traditional univariate HRV measures and standard clinical vital signs. Following ethics approval and informed parental consent, data were collected from 48 children receiving general anesthesia during dental surgery. A total of 42 dental dam insertion (nociception) and 57 anesthetic bolus (antinociception) events were noted. A nociception index was created for each HRV algorithm, ranging from 0 (no nociception) to 100 (strong nociception). Dental dam insertion changed the CRC nociception index by an average of 27 [95% CI from 21 to 33] (P < 0.000005), and a bolus dose of anesthetic changed it by an average of -19 [-27 to -12] (P < 0.00003). Real-time CRC was more sensitive to nociception and antinociception than were the traditional measures.
Investigations of the origin, regulation, and substrate specificities of protein kinases in the human kinome
Creators: name: Lai, Shenshen
Publisher: name: University of British Columbia
Year: 2015

description: The eukaryotic protein kinases (ePKs) constitute one of the largest families of enzymes encoded by eukaryotic genomes. They regulate all cellular processes by transducing inter- and intracellular signals via the phosphorylation of specific protein substrates. The primary sequences of ePK catalytic domains are highly conserved, indicating a common ancestry. They all share a conserved catalytic core for their phosphotransferase function and often a common activation mechanism by phosphorylation of a variable segment known as the activation T-loop. Starting from a manually aligned and annotated map of 492 typical human protein kinase domains, I first explored the origin of ePKs using a modified BLAST method in various species. Comparisons of primary, secondary and tertiary structures supported the hypothesis that protein kinases and choline kinases evolved from an ancient aminoacyl-tRNA ligase. Secondly, I studied the functional roles of two extremely conserved phosphosites that exist ubiquitously in the activation T-loops of most protein-serine/threonine kinases. The extensively examined extracellular signal-regulated kinases (ERKs) 1/2 from the mitogen-activated protein kinase family were used as a model in this study. I discovered that both Thr-207 and Tyr-210 from human ERK1 were essential for regulation of its phosphotransferase activity. Autophosphorylation of Thr-207 played an inhibitory role to control ERK1 activity after the initial phosphorylation and activation by MEK1. This may serve as a general mechanism for kinase autoinhibition. I also examined the substrate specificities of more than 200 human protein kinases with peptide microarrays populated with semi-optimal substrate sequences. The resultant data were used to expand the training datasets for development of next generation protein kinase substrate predictive algorithms. Additionally, I describe a novel method to produce a more unbiased polyclonal generic phosphotyrosine antibody than the monoclonal antibodies that are commonly used to enrich and track tyrosine-phosphorylated proteins. The tools and knowledge resulting from this research should enable improvements in the characterization of protein kinases and establishing their linkages to a variety of human diseases for the development of better diagnostic tests and therapeutic drugs. This work also provides basic insights into the evolution of life and the specific architecture of protein kinase-based signalling systems.
Progenitors of type Ia supernovae in elliptical galaxies
Creators: name: Gilfanov, Marat
name: Bogdan, Akos
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Although there is a nearly universal agreement that type Ia supernovae are associated with the thermonuclear disruption of a CO white dwarf, the exact nature of their progenitors is still unknown. The single degenerate scenario envisages a white dwarf accreting matter from a non-degenerate companion in a binary system. Nuclear energy of the accreted matter is released in the form of electromagnetic radiation or gives rise to numerous classical nova explosions prior to the supernova event. We show that combined X-ray output of supernova progenitors and statistics of classical novae predicted in the single degenerate scenario are inconsistent with X-ray and optical observations of nearby early type galaxies and galaxy bulges. White dwarfs accreting from a donor star in a binary system and detonating at the Chandrasekhar mass limit can account for no more than ~5% of type Ia supernovae observed in old stellar populations.
description: To be published in Proceedings of "Astrophysics of neutron stars", Cesme, 2010
Optical Properties of Peaked Spectrum Radio Sources
Creators: name: Nascimento, R. S.
name: Rodríguez-Ardila, A.
name: Dahmer-Hahn, L.
name: Fonseca-Faria, M. A.
name: Riffel, R.
name: Marinello, M.
name: Beuchert, T.
name: Callingham, J. R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work, we study the optical properties of compact radio sources selected from the literature in order to determine the impact of the radio-jet in their circumnuclear environment. Our sample includes 58 Compact Steep Spectrum (CSS) and GigaHertz Peaked Spectrum (GPS) and 14 Megahertz-Peaked spectrum (MPS) radio sources located at $z\leq 1$. The radio luminosity ($L_R$) of the sample varies between Log\,L$_R\sim$ 23.2 and 27.7 W\,Hz$^{-1}$. We obtained optical spectra for all sources from SDSS-DR12 and performed a stellar population synthesis using the {\sc starlight} code. We derived stellar masses (M$_\star$), ages $\langle t_\star \rangle$, star formation rates (SFR), metallicities $\langle Z_\star \rangle$ and internal reddening A$_V$ for all young AGNs of our sample. A visual inspection of the SDSS images was made to assign a morphological class for each source. Our results indicate that the sample is dominated by intermediate to old stellar populations and there is no strong correlation between optical and radio properties of these sources. Also, we found that young AGNs can be hosted by elliptical, spiral and interacting galaxies, confirming recent findings. When comparing the optical properties of CSS/GPS and MPS sources, we do not find any significant difference. Finally, the Mid-Infrared WISE colours analysis suggest that compact radio sources defined as powerful AGNs are, in general, gas-rich systems.
description: 44 pages, 12 figures, 5 tables, accepted for publication in MNRAS
title: LoPS – Lokales Positionsbestimmungssystem (LoPS – Local Positioning System)
Creators: name: Rudolph, Alexander
name: Kleinschmidt, Torsten
name: Blank, Marcel
name: Adamy, Jürgen
Publisher: name: De Gruyter
Year: 2021

description: Zur Durchführung von Serviceaufgaben ist die Navigation eine Basiskompetenz eines mobilen Systems. In dieser Arbeit wird ein trilaterationsbasiertes Navigationssystem auf Ultraschallbasis vorgestellt. Das Lokale Positionsbestimmungs-System LoPS ermöglicht die Bestimmung von Objektpositionen in großen Räumen. LoPS zeichnet sich durch einfache Handhabung und flexible Einsatzmöglichkeiten aus. Bei der Entwicklung wurde großer Wert auf preisgünstige, robuste und unkomplizierte Sensorik gelegt. LoPS wurde als Referenzmesssystem für Roboternavigationsverfahren konzipiert, sein Einsatz ist aber in allen, auf die Bestimmung von kartesischen Koordinaten abzielenden Messaufgaben möglich.
Historiografia da santidade no século XXI: percursos prévios, problemáticas atuais: balanço e reflexão
Creators: name: Rosa, Maria De Lurdes
Publisher: name: Lusitania Sacra
Year: 2013

description: O artigo procura apresentar a produção historiográfica mais recente sobre o tema da santidade. Sem possibilidades de uma apresentação exaustiva, constitui‑se sobretudo como um guia de leitura para a bibliografia que se anexa, com concentração nos títulos publicados na última década. Para melhor e mais correta compreensão das abordagens analisadas, é feito previamente um enquadramento histórico da historiografia sobre santidade, nos séculos XIX e XX.
description: Lusitania Sacra, n. 28 (2013): A Santidade
Cosmological radiative transfer for the line-of-sight proximity effect
Creators: name: Partl, Adrian M.
name: Dall'Aglio, Aldo
name: Müller, Volker
name: Hensler, Gerhard
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the proximity effect in the Ly-a forest around high redshift quasars as a function of redshift and environment employing a set of 3D radiative transfer simulations. The analysis is based on dark matter only simulations at redshifts 3, 4, and 4.9 and, adopting an effective equation of state for the baryonic matter, we infer the HI densities and temperatures in the cosmological box. The UV background (UVB) and additional QSO radiation with Lyman limit flux of L_{νLL} = 1e31 and 1e32 erg / Hz s are implemented with a radiative transfer code until an equilibrium configuration is reached. We analyse mock spectra originating at the QSO in the most massive halo, in a random filament and in a void. The proximity effect is studied using flux transmission statistics, in particular with the normalised optical depth. Beyond a radius of r > 1 Mpc / h from the quasar, we measure a transmission profile consistent with geometric dilution of the QSO ionising radiation. A departure from geometric dilution is only seen, when strong absorbers intervene the line-of-sight. The cosmic density distribution around the QSO causes a large scatter in the normalised optical depth. The scatter decreases with increasing redshift and increasing QSO luminosity. The mean proximity effect provides an average signal that is biased by random large scale density enhancements on scales up to r \approx 15 Mpc / h. The distribution of the proximity effect strength provides a measure of the proximity effect along individual lines of sight. It shows a clear maximum almost without an environmental bias. Therefore it can be used for an unbiased estimate of the UVB. Differing spectral energy distributions between the QSO and the UVB modify the profile which can be reasonably well corrected analytically. A few Lyman limit systems have been identified that prevent the detection of the proximity effect due to shadowing.
description: 18 pages, 16 figures, submitted to A&A, including corrections due to the referees report
Back to school : re-engagement from the adolescent perspective
Creators: name: Bendell, Jacqueline
Publisher: name: University of British Columbia
Year: 2015

description: School absenteeism and disengagement is a growing concern among adolescents in North America. However, numerous students have been successful in reengaging into school and completing their education. As such, the purpose of this research was to contribute to literature on school re-engagement by exploring an adolescent perspective of the experiences that were helpful and unhelpful in returning to school. This qualitative study employed the Enhanced Critical Incident Technique (ECIT; Butterfield, Borgen, Maglio, & Amundson, 2009) to answer the following central research question: What meaningful experiences do adolescents perceive as influencing their high school re-engagement? More specifically, three sub-questions were addressed (a) What do adolescents perceive as being helpful in the re-engagement process? (b) What do adolescents perceive as being unhelpful in the re-engagement process? (c) What do adolescents feel would have been helpful during the time of their re-engagement? Semi-Structured interviews were conducted with 16 adolescents, ages 14-18, who had successfully re-engaged in high school after a period of problematic school absenteeism. Using a set of standardized procedures to analyze participants’ interview data, 14 meaningful categories emerged as being facilitative or hindering of the school re-engagement experience. According to participants, in decreasing order of importance, helping, hindering, and wish list categories included (a) teacher variables, (b) perspective shift, (c) emotional distress, (d) peer relationships, (e) family factors, (f) problem resolution, (g) sleep, (h) school factors, (i) consequences, (j) professional supports, (k) goal attainment, (l) extracurricular activity, (m) substance use, and (n) other priorities. Results of this study have important implications for training and practice. Moreover, directions for future research are discussed.
«Vidas», «Histórias», «Crónicas», «Tratados»: sobre a escrita e a edição de hagiografias e de biografias devotas em Portugal (séculos XVI‑XVIII)
Creators: name: Mendes, Paula Almeida
Publisher: name: Lusitania Sacra
Year: 2013

description: Tendo como pano de fundo a questão da escrita e da edição de «Vidas» de santos, beatos, veneráveis e varões e mulheres «ilustres em virtude», este estudo pretende apresentar um corpus bibliográfico relativo a este filão textual – nomeadamente de hagiografias e de biografias devotas individuais – tentando chamar a atenção para aspetos relacionados com a ofensiva contrarreformística no domínio do culto dos santos, do seu reconhecimento oficial e da codificação de vários e diversos modelos de «santidade» – ou, pelo menos, de perfeição – no âmbito de uma estratégia de disciplinamento e de modelização de comportamentos e gestos propostos aos fiéis.
description: Lusitania Sacra, n. 28 (2013): A Santidade
Assesing high altitude Andean wetlands using plant community structure : a multivariate analysis and remote sensing approach
Creators: name: Ruiz-Esquide, María José
Publisher: name: University of British Columbia
Year: 2015

description: High altitude wetlands of the Central Andes Cordillera in South America are unique ecosystems with valuable ecosystem functions and one of the environments most threatened by climate change. They play a significant role in sustaining endemic biota, in providing the grasslands for herd of alpacas, llamas and vicuñas and by storing water and releasing it during the year to one of the driest regions on the earth, the Atacama Desert. This ecosystem is dependent on groundwater sources, and vegetation regulates the amount of water available during the dry periods. In Chile, the increasing demand for water requires more technical knowledge and research in order to prevent further degradation. The objective of this research is the description of Tarapacá and Atacama regions’ wetlands plant communities, the abiotic factors and human impacts that are more strongly associated with them by multivariate analysis and a remote sensing approach. Chapter 1 is a review of high altitude Andean wetlands and their importance. In Chapter 2, I identified differences in plant communities’ structure. Each region was distinguished by 5 different plant communities according to the vegetation wetland types. Abiotic factors and physical attributes that were more strongly associated with plant communities were the number and width of principal streams found on the wetland and amount of rocks, bare land and percent of organic matter along the vegetation transects. Using field work and remote sensing, in Chapter 3, I performed a spectral discrimination among plant communities using IKONOS-2 and Geoeye-1 high resolution satellites images. They were used to identify which bands and vegetation indices were the most effective for discriminating vegetation classes. Vegetation classes did express different spectral behaviors. The classes with more reflectance variation were mixed grasses with Oxychloe andina, mixed grasses with salt patches and mixed grasses with Zameioscirpus atacamensis, while classes dominated by O. andina, Z. atacamensis and Festuca chrysophylla expressed less variation on the spectral range. General Discriminant Analysis showed that the most important spectral bands and vegetation indices for distinguishing differences between vegetation classes were Band 1-blue, band 4-NIR and the Wide Dynamic Range Vegetation Index.
The Burrell-Optical-Kepler-Survey (BOKS) I: Survey Description and Initial Results
Creators: name: Feldmeier, John J.
name: Howell, Steve B.
name: Sherry, William
name: von Braun, Kaspar
name: Everett, Mark E.
name: Ciardi, David R.
name: Harding, Paul
name: Mihos, J. Christopher
name: Rudick, Craig S.
name: Lee, Ting-Hui
name: Kutsko, Rebecca M.
name: van Belle, Gerard T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the initial results of a 40 night contiguous ground-based campaign of time series photometric observations of a 1.39 sq. deg field located within the NASA Kepler mission field of view. The goal of this pre-launch survey was to search for transiting extrasolar planets and to provide independent variability information of stellar sources. We have gathered a data set containing light curves of 54,687 stars from which we have created a statistical sub-sample of 13,786 stars between 14< r <18.5 and have statistically examined each light curve to test for variability. We present a summary of our preliminary photometric findings including the overall level and content of stellar variability in this portion of the Kepler field and give some examples of unusual variable stars found within. We present a preliminary catalog of 2,457 candidate variable stars, of which 776 show signs of periodicity. We also present three potential exoplanet candidates, all of which should be observable in detail by the Kepler mission.
description: 51 pages, 26 figures. Accepted for publication in AJ. Full resolution version, as well as variable star tables available at: http://class.ysu.edu/~jjfeldme/publications.html
Hardware-Efficient Deconvolution-Based GAN for Edge Computing
Creators: name: Alhussain, Azzam
name: Lin, Mingjie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Generative Adversarial Networks (GAN) are cutting-edge algorithms for generating new data samples based on the learned data distribution. However, its performance comes at a significant cost in terms of computation and memory requirements. In this paper, we proposed an HW/SW co-design approach for training quantized deconvolution GAN (QDCGAN) implemented on FPGA using a scalable streaming dataflow architecture capable of achieving higher throughput versus resource utilization trade-off. The developed accelerator is based on an efficient deconvolution engine that offers high parallelism with respect to scaling factors for GAN-based edge computing. Furthermore, various precisions, datasets, and network scalability were analyzed for low-power inference on resource-constrained platforms. Lastly, an end-to-end open-source framework is provided for training, implementation, state-space exploration, and scaling the inference using Vivado high-level synthesis for Xilinx SoC-FPGAs, and a comparison testbed with Jetson Nano.
description: To be presented in the 56th Annual Conference on Information Sciences and System (CISS), 9-11 March 2022, and published in the IEEE Xplore Digital library
Devoção, disciplina e preconceito: a construção da santidade em conventos e recolhimentos da América portuguesa
Creators: name: Santos, Georgina Silva Dos
Publisher: name: Lusitania Sacra
Year: 2013

description: As dificuldades impostas pela Coroa lusa para construção de conventos na América portuguesa estimularam a formação de recolhimentos femininos. Criados e custeados, em geral, por iniciativa de particulares, os recolhimentos se tornaram o espaço colonial privilegiado para o desenvolvimento de experiências místicas, em detrimento dos conventos que, salvo exceções, apresentavam um ambiente adverso ao cumprimento das regras de cada ordem, pois seus critérios de admissão baseavam‑se, sobretudo, em condicionantes econômicos e sociais.
description: Lusitania Sacra, n. 28 (2013): A Santidade
Absorption of the $ω$ and $ϕ$ Mesons in Nuclei
Creators: name: Wood, M. H.
name: Nasseripour, R.
name: Paolone, M.
name: Djalali, C.
name: Weygand, D. P.
name: Collaboration, the CLAS
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Due to their long lifetimes, the $ω$ and $ϕ$ mesons are the ideal candidates for the study of possible modifications of the in-medium meson-nucleon interaction through their absorption inside the nucleus. During the E01-112 experiment at the Thomas Jefferson National Accelerator Facility, the mesons were photoproduced from $^{2}$H, C, Ti, Fe, and Pb targets. This paper reports the first measurement of the ratio of nuclear transparencies for the $e^{+}e^{-}$ channel. The ratios indicate larger in-medium widths compared with what have been reported in other reaction channels.
description: 6 pages, 4 figures
Quando os santos recolhem ao leito: mística, santidade e modernidade em Portugal entre os séculos XVII e XX
Creators: name: Ribeiro, António Vitor
Publisher: name: Lusitania Sacra
Year: 2013

description: Este estudo pretende investigar as razões profundas para uma mutação essencial no modelo de santidade em Portugal durante o século XVII. Essa mutação, que é bastante nítida nos processos inquisitoriais de falsa santidade, teve lugar em meados do século e consistiu numa interiorização da vivência mística, em detrimento de manifestações exteriores. O corpo inanimado do alegado santo impõe‑se a partir daí como signo e única forma de manifestação externa, substituindo‑se parcialmente às visões, locuções e outros favores divinos. Esta “somatização” da mística resultou em grande medida do processo de interiorização trazido pela chamada “modernidade”, na qual têm destaque a autobiografia, a confissão e a direcção espiritual. Ao mesmo tempo, o final do século XVII trouxe o fenómeno da marginalização da mística, levando a que este género de manifestações se confinasse às camadas populares, principalmente camponesas, transmitindo uma falsa ideia de arcaísmo a um fenómeno que era, na sua essência, um produto historicamente recente.
description: Lusitania Sacra, n. 28 (2013): A Santidade
S. Jozé de Cupertino: “santo dei voli” in Portogallo? Itinerari di ricerca tra letteratura, iconografi a e rappresentazione sociale
Creators: name: Nestola, Paola
Publisher: name: Lusitania Sacra
Year: 2013

description: O presente estudo apresenta‑nos algumas linhas de investigação sobre um santo conventual originário da região da Apúlia, Itália, conhecido como o “santo dos voos”. Quem era São Jozé de Cupertino, quais as suas qualidades e que atributos iconográficos distinguem este elemento da corte celeste franciscana? Este contributo procura trazer à luz os esquemas hagiográficos segundo os quais este santo estrangeiro era proposto aos devotos portugueses, sublinhando a especificidade dos vários modelos de difusão em territórios distintos dos da sua origem. Além disso, pretende colocar em evidência as tipologias dos vínculos coletivos e individuais estabelecidos na terra de origem do cupertinense e em alguns centros de Portugal; confronta, por fim, o modelo mítico do “santo dos voos”, com o de Bartolomeu de Gusmão, o “padre voador” nativo de Santos (Brasil), inventor de uma célebre máquina aerostática.
description: Lusitania Sacra, n. 28 (2013): A Santidade
Flexible clustering via hidden hierarchical Dirichlet priors
Creators: name: Lijoi, Antonio
name: Prünster, Igor
name: Rebaudo, Giovanni
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The Bayesian approach to inference stands out for naturally allowing borrowing information across heterogeneous populations, with different samples possibly sharing the same distribution. A popular Bayesian nonparametric model for clustering probability distributions is the nested Dirichlet process, which however has the drawback of grouping distributions in a single cluster when ties are observed across samples. With the goal of achieving a flexible and effective clustering method for both samples and observations, we investigate a nonparametric prior that arises as the composition of two different discrete random structures and derive a closed-form expression for the induced distribution of the random partition, the fundamental tool regulating the clustering behavior of the model. On the one hand, this allows to gain a deeper insight into the theoretical properties of the model and, on the other hand, it yields an MCMC algorithm for evaluating Bayesian inferences of interest. Moreover, we single out limitations of this algorithm when working with more than two populations and, consequently, devise an alternative more efficient sampling scheme, which as a by-product, allows testing homogeneity between different populations. Finally, we perform a comparison with the nested Dirichlet process and provide illustrative examples of both synthetic and real data.
Direção espiritual, experiência mística e destino hagiográfico: Frei Bernardino das Chagas e a Venerável Maria do Lado
Creators: name: Jacquinet, Maria Luísa
Publisher: name: Lusitania Sacra
Year: 2013

description: Apartando‑se da questão da bondade intrínseca da experiência devota de Maria do Lado (1605‑1632), o presente artigo procura analisar, segundo critérios e coordenadas do saber histórico, o percurso de perfeição da beata louriçalense, ilustrando, no quadro da espiritualidade da época Moderna, a compaginação entre a aspiração à bem‑aventurança, o papel da direção espiritual na condução do foro íntimo da consciência e a mística como veículo e penhor de santidade. Movendo‑se invariavelmente na charneira entre ortodoxia e heterodoxia e concitando a vigilância da autoridade eclesiástica, mas logrando, muito embora, resultar na fundação de uma família religiosa, o caso assume, na sua complexa riqueza, a interpelação do sentido e limites da confissão enquanto (e porquanto) relação humana, da contingência dos instrumentos e mecanismos de disciplinamento moral e social, em suma, da historicidade inerente a modelos e critérios de santidade.
description: Lusitania Sacra, n. 28 (2013): A Santidade
EOSC-Pillar D5.2
Creators: name: Candela, Leonardo
name: Cazenave, Nicolas
name: Frosini, Luca
name: Le Franc, Yan
name: Mangiacrapa, Francesco
Publisher: name: Zenodo
Year: 2021
Subjects: FAIR Data Space
Data Catalogue

description: EOSC-Pillar is developing and integrating a set of tools and services overall supporting the construction and maintenance of an aggregated data space implementing the FAIR principles. This deliverable documents the activities and results (e.g., indicators on integrated data providers, and datasets, indicators on datasets accesses) of the operation of the EOSC-Pillar toolset enacting the development of the EOSC-Pillar data space. This first release of this typology of deliverable gives early indicators about the exploitation of the proposed services. The data space will be actually developed in the second period of the project.
Trapped electron coupled to superconducting devices
Creators: name: Bushev, P.
name: Bothner, D.
name: Nagel, J.
name: Kemmler, M.
name: Konovalenko, K. B.
name: Loerincz, A.
name: Ilin, K.
name: Siegel, M.
name: Koelle, D.
name: Kleiner, R.
name: Schmidt-Kaler, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose to couple a trapped single electron to superconducting structures located at a variable distance from the electron. The electron is captured in a cryogenic Penning trap using electric fields and a static magnetic field in the Tesla range. Measurements on the electron will allow investigating the properties of the superconductor such as vortex structure, damping and decoherence. We propose to couple a superconducting microwave resonator to the electron in order to realize a circuit QED-like experiment, as well as to couple superconducting Josephson junctions or superconducting quantum interferometers (SQUIDs) to the electron. The electron may also be coupled to a vortex which is situated in a double well potential, realized by nearby pinning centers in the superconductor, acting as a quantum mechanical two level system that can be controlled by a transport current tilting the double well potential. When the vortex is trapped in the interferometer arms of a SQUID, this would allow its detection both by the SQUID and by the electron.
description: 13 pages, 5 figures
Os santos na Corte de D. João III e de D. Catarina
Creators: name: Buescu, Ana Isabel
Publisher: name: Lusitania Sacra
Year: 2013

description: Este artigo tem como objectivo sistematizar algumas reflexões sobre a santidade no século XVI, num contexto social preciso, que é o da corte de D João III e de D Catarina Procurando evidenciar como a santidade tem sido objecto de estudo pela historiografia, dá‑se relevo a alguns aspectos particulares, na sua estreita relação com o mundo cortesão: os santos e os nomes, a iconografia régia, o mundo das relíquias que, além de “pedaços de santidade” eram também, em termos sociais, e aqui dinásticos, objecto de distinção. Tudo isto num mundo que, na sua visão do cosmos, das coisas e dos homens, se dividia ainda, em significativa medida, entre o sagrado e o profano.
description: Lusitania Sacra, n. 28 (2013): A Santidade
Learning to be students again : second language socialization of graduate students in a Canadian university
Creators: name: Kim, Mi-Young
Publisher: name: University of British Columbia
Year: 2015

description: This study reports on multiple qualitative case studies of five non-native English speaking (NNES) graduate students majoring in Teaching English as a Second Language (TESL) in an English-medium university in Canada. The students' academic discourse socialization experiences and the ways in which they negotiated and constructed their identities in this new context are highlighted as they navigate their first academic year in a graduate program in an English speaking context, as former teachers from an English as a foreign language context. Adopting a second language socialization framework (Duff, 2003, 2007; Duff & Talmy, 2011), this study employs longitudinal qualitative data, mainly participant interviews, journals, and writing samples, to examine the challenges and variability of these students’ language socialization processes. Findings demonstrate non-conformity, contestation, and partial and multiple community memberships with progress as well as setbacks, thus revealing the complexity of the processes and outcomes of language socialization. As the students worked to reconceptualize and negotiate multiple voices and identities, their language socialization processes were largely impacted by their prior learning and professional experiences as well as by their future trajectories (Gale, 1994; Hirvela & Belcher, 2001; Shen, 1989). Findings also suggest that, along with institutional and program support, students' willingness to negotiate and invest in their new communities of practice (Lave & Wenger, 1991) accelerated their (perceived) progress in learning as well as their academic socialization. The study suggests that NNESs, by perceiving themselves as individuals with unique needs, ideologies, and goals, can be better equipped to see themselves as multicompetent, legitimate, and full members of their graduate studies community, rather than language-deficient peripheral members (Cook, 2005; Pavlenko, 2003). The study enhances our understanding of the necessity to redefine and recognize the diverse needs, expectations, and ideologies of a growing number of international students who increasingly compose a significant portion of the student body in North American academia and the field of TESL.
Expansion in SL_d(Z/qZ), q arbitrary
Creators: name: Bourgain, Jean
name: Varjú, Péter P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Let S be a fixed finite symmetric subset of SL_d(Z), and assume that it generates a Zariski-dense subgroup G. We show that the Cayley graphs of pi_q(G) with respect to the generating set pi_q(S) form a family of expanders, where pi_q is the projection map Z->Z/qZ.