cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The role of the pre-frontal cortex in step initiation and aging related changes
Creators: name: Pretty, DG
Publisher: name: University Of Tasmania
Year: 2023

description: Fast voluntary stepping is crucial to reducing fall risk in older adults. Older and younger adults (n = 20, mage = 69.4 years; n =21, mage = 26.9 years respectively) performed stepping tasks on force plates while functional Near Infrared Spectroscopy recorded neural activity in the Pre-Frontal Cortex (PFC). It was hypothesised that the PFC plays a role in step initiation and therefore would have greater activity for a choice step compared to a simple step, and this was supported (p = .041, ˜í‚àëp¬¨‚â§ = .11). Age differences in stepping under levels of cognitive load (forwards and backwards digit recall dual tasks) and step complexity (simple and choice stepping) were also investigated. Older adults' step initiation was significantly more slowed by the increased step complexity (p = .022, r = .44). For the backwards digit recall dual task, older adults employed a slower stepping strategy for both step types (p = .007, r = .43). Conversely, young adults maintained fast step initiation for both step types and upregulated PFC activity more for the choice step (p = .003, r = .47). Together these findings suggest that older adults could maintain comparable stepping and PFC involvement up until executive functions were strained through either increased step decision making or higher cognitive load. Future research aiming to improve older adults' stepping speed to reduce fall risk should target more complex stepping conditions.
Bosonic Spectral Action Induced from Anomaly Cancelation
Creators: name: Andrianov, A. A.
name: Lizzi, Fedele
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show how (a slight modification of) the noncommutative geometry bosonic spectral action can be obtained by the cancelation of the scale anomaly of the fermionic action. In this sense the standard model coupled with gravity is induced by the quantum nature of the fermions. The regularization used is very natural in noncommutative geometry and puts the bosonic and fermionic action on a similar footing.
description: 14 pages
O uso do Moodle: relatos de alunos de contábeis
Creators: name: Almeida, Janaína Borges De
name: Santos, Jocyléia Santana Dos
Publisher: name: Internet Latent Corpus Journal
Year: 2015

description: O objetivo desta pesquisa foi entender como são utilizadas as Tecnologias de Informação e Comunicação Digitais, disponíveis no Moodle, no curso de Ciências Contábeis de uma Instituição de Ensino Superior do Brasil. Haja vista a compreensão de que são necessários estudos que demonstrem experiências com este ambiente virtual de aprendizagem, em instituições de ensino distintas. A metodologia adotada foi a história oral temática, para isso foram realizadas entrevistas semi-estruturadas com seis alunos do curso pesquisado, é também do tipo qualitativa. Os resultados das narrativas demonstram que o Moodle é utilizado como um repositório de material dos professores para os alunos. O uso de fóruns e chats é incipiente e consequentemente as interações e comunicações entre alunosalunos e alunos-professor também é. O uso adequado de tecnologias digitais pode propiciar a aprendizagem cooperativa, portanto há um campo oportuno a ser explorado no curso pesquisado, porém é necessário repensar as práticas existentes.
description: Internet Latent Corpus Journal, vol. 5 n.º 1 (2015)
Convergence Time Evaluation of Algorithms in MANETs
Creators: name: Patil, Annapurna P
name: Sambaturu, Narmada
name: Chunhaviriyakul, Krittaya
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Since the advent of wireless communication, the need for mobile ad hoc networks has been growing exponentially. This has opened up a Pandoras Box of algorithms for dealing with mobile ad hoc networks, or MANETs, as they are generally referred to. Most attempts made at evaluating these algorithms so far have focused on parameters such as throughput, packet delivery ratio, overhead etc. An analysis of the convergence times of these algorithms is still an open issue. The work carried out fills this gap by evaluating the algorithms on the basis of convergence time. Algorithms for MANETs can be classified into three categories: reactive, proactive, and hybrid protocols. In this project, we compare the convergence times of representative algorithms in each category, namely Ad hoc On Demand Distance Vector (AODV) reactive, Destination Sequence Distance Vector protocol (DSDV) proactive, and Temporally Ordered Routing Algorithm (TORA) hybrid. The algorithm performances are compared by simulating them in ns2. Tcl is used to conduct the simulations, while perl is used to extract data from the simulation output and calculate convergence time. The design of the experiments carried on is documented using Unified modeling Language. Also, a user interface is created using perl, which enables the user to either run a desired simulation and measure convergence time, or measure the convergence time of a simulation that has been run earlier.
description: 6 pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS 2009, ISSN 1947 5500, Impact Factor 0.423, http://sites.google.com/site/ijcsis/
Topics in natural product synthesis and biosynthesis
Creators: name: Forrester, James McLeod
Publisher: name: University of British Columbia
Year: 2011

description: In Part I of this thesis is described the syntheses of radiolabelled ∝-bisabolene, monocyclofarnesol and farnesol-10 ,11-epoxide, and the evaluation of their role as precursors of the mould metabolite trichothecin. ∝-Bisabolene was prepared by dehydration of radiolabelled ∝-bisabolol, which itself was prepared by the action of ¹⁴C-methyl magnesium iodide on 2-methyl-6-keto-6-(4'-methylcyclohex-3'-enyl)-hex-2-ene. This ketone was prepared in a modified Grignard reaction from 5-bromo-2-methyl-pent-2-ene, (obtained from cyclopropyl methyl ketone by treatment with methyl magnesium iodide followed by reaction of the intermediate 2-cyclopropylpropan-2-ol with 48% hydrogen bromide) and 4-methylcyclohex-3-ene carboxylic acid (prepared in a Diels Alder reaction between acrylic acid, or its methyl ester, and isoprene). Monocyclofarnesol was prepared from β-ionone by reduction of the central double bond to dihydro- β-ionone followed by a modified Wittig reaction with radiolabelled trimethyl phosphono- acetate, prepared from trimethyl phosphite and 1- ¹⁴C-methyl bromoacetate. Farnesol-10,11-epoxide was prepared from geraniol by formation of geranyl bromide which was condensed with ethyl acetoacetate. Hydrolysis and decarboxylation then gave geranyl acetone which was treated in the same way as dihydro- -ionone to give ¹⁴C-labelled farnesol. Treatment of farnesol with N- bromosuccinimide in aqueous glyme followed by base catalysed ring closure gave ¹⁴C-labelled farnesol-10,11-epoxide. The mechanisms whereby these compounds could be converted to trichothecin are described and the relevance, to contemporary reports, of their non-incorporation into trichothecin is discussed. In Part II is described an attempted synthesis of ∝-cuparenone from 5-acetoxy-6-methyl-2-p-tolylhepta-1,5-diene. Reaction of p-tolualdehyde with 5-bromo-2-methylpent-2-ene gave 6-keto-2-methyl-6-p-tolylhex-2-ene . Protection of the ketone as a ketal followed by hydroboration of the double bond and acetylation of the resulting alcohol, gave, after deketalisation and Wittig reaction, 5-acetoxy-6-methyl-2-p-tolylhept -1-ene. Hydrolysis of the acetate and oxidation gave 6-methyl-2-p-tolylhept-l-ene 5-one which gave 5-acetoxy-6-methyl-2-p-tolylhepta-1,5-diene on treatment with isopropenyl acetate and p-toluenesulpfionic acid. This enol acetate could not be converted to ∝-cuparenone. In Part III is described the photochemistry of triacetic acid lactone methyl ether. Photolysis of this compound in methanol solution gave 6,6-dimethoxy-4-methyl-2-pyrone which on treatment with water gave cis - β -carbomethyoxymethylcrotonic acid. The mechanism for this process is discussed.
Solvable Systems of Linear Differential Equations
Creators: name: Robertson, Katherine M.
name: Saad, Nasser
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34A05, 34G10 (Primary); 33C20 (Secondary)

description: The asymptotic iteration method (AIM) is an iterative technique used to find exact and approximate solutions to second-order linear differential equations. In this work, we employed AIM to solve systems of two first-order linear differential equations. The termination criteria of AIM will be re-examined and the whole theory is re-worked in order to fit this new application. As a result of our investigation, an interesting connection between the solution of linear systems and the solution of Riccati equations is established. Further, new classes of exactly solvable systems of linear differential equations with variable coefficients are obtained. The method discussed allow to construct many solvable classes through a simple procedure.
description: 13 pages
Avaliação de vídeos, da Internet, para uso na educação sexual
Creators: name: Pena, Andreia Lelis
name: Miranda, Fernanda Pimentel De
name: Mól, Gerson De Souza
Publisher: name: Internet Latent Corpus Journal
Year: 2015

description: A globalização impõe um intercâmbio dinâmico de conhecimentos. Na sociedade atual, o debate a respeito da sexualidade humana extrapola o espaço escolar, sendo potencializado pelas Tecnologias de Informação e Comunicação. Este estudo analisou o potencial pedagógico de 67 vídeos do YouTube sobre educação sexual. Para tanto, realizou-se a análise de conteúdo e discurso por meio das categorias: forma de apresentação, público alvo, gênero artístico, tema principal e abordagem em educação sexual. O YouTube aparece como significativa ferramenta da internet. No entanto, não é tarefa fácil à seleção de vídeos que podem servir à função pedagógica. É função do professor avaliar e selecionar os vídeos que podem contribuir para um ensino que desperte a consciência crítica. Dentre os gêneros analisados, as animações representam uma possibilidade para dinamizar e modificar o ensino. A análise dos vídeos, quanto as diferentes abordagens em educação sexual, desvelou o predomínio da abordagem biológico-higienista.
description: Internet Latent Corpus Journal, vol. 5 n.º 1 (2015)
4º Congresso Ibero-Americano em Investigação Qualitativa (CIAIQ2015)
Creators: name: Veríssimo, Sofia
name: Bicudo, Maria Aparecida
name: Costa, António Pedro
Publisher: name: Internet Latent Corpus Journal
Year: 2015

description: O número especial do Internet Latent Corpus Journal (ILCJ) é composto por cinco artigos selecionados pelas comissões organizadora e científica do 4º Congresso Ibero-Americano em Investigação Qualitativa (CIAIQ2015), de entre os melhores trabalhos de investigação da conferência cujo corpus de dados tem a sua origem na Internet ou tem na Internet a sua fonte substancial de dados. O CIAIQ2015 decorreu nos dias 5, 6 e 7 de agosto de 2015, na Universidade Tiradentes, em Aracaju, Brasil. O CIAIQ2015 recebeu um total de 464 submissões de artigos. Cada artigo foi submetido a um processo de revisão double-blind realizada por uma comissão científica composta por elementos altamente qualificados nas diversas áreas científicas do congresso. (...)
description: Internet Latent Corpus Journal, vol. 5 n.º 1 (2015)
Perfect and partial hedging for swing game options in discrete time
Creators: name: Dolinsky, Y.
name: Iron, Y.
name: Kifer, Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: The paper introduces and studies hedging for game (Israeli) style extension of swing options considered as multiple exercise derivatives. Assuming that the underlying security can be traded without restrictions we derive a formula for valuation of multiple exercise options via classical hedging arguments. Introducing the notion of the shortfall risk for such options we study also partial hedging which leads to minimization of this risk.
What Drives the Adoption of Climate Smart Agricultural Practices? Evidence from Maize Farmers in Northern Nigeria
Creators: name: Oyawole, F. P.
name: Dipeolu, A. O.
name: Shittu, A. M.
name: Obayelu, A. E.
name: Fabunmi, T. O.
name: Oyawole, F. P.
name: Dipeolu, A. O.
name: Shittu, A. M.
name: Obayelu, A. E.
name: Fabunmi, T. O.
Publisher: name: Unknown
Year: 2019
Subjects: subject: Environmental Economics and Policy
subject: Climate smart agriculture
subject: Multivariate Probit
subject: Sustainable agriculture

description: The adoption of Climate Smart Agriculture (CSA) remains low in sub-Saharan Africa, despite its promotion as a sustainable production system for mitigating agriculture’s contribution to climate change, as well as for helping farmers adapt to the adverse effects of climate change. This necessitates continuing research on its determinants, in order to identify appropriate mechanisms to encourage adoption. This paper investigates the factors that drive CSA practices’ adoption using recent plot-level survey data from Northern Nigeria. A Multivariate Probit Model was used to analyse the adoption of six CSA practices and control for the influence of socioeconomic, plot and institutional factors. Our study finds that the likelihood of CSA practices’ adoption is influenced by land ownership, social capital, gender, off-farm work participation and plot distance from homestead. However, these factors do not unanimously influence the six CSA practices considered and vary significantly among them. It was concluded that these factors have to be considered when designing policies to promote CSA towards the achievement of sustainable livelihoods among farm households in Nigeria. We recommend that farmers be encouraged to join groups (farmer groups, cooperatives), in order to build their social capital, which could expose them to better practices, obtain informal training from those who have adopted them, and obtain help for implementation.
Multimode analysis of non-classical correlations in double well Bose-Einstein condensates
Creators: name: Ferris, Andrew J
name: Davis, Matthew J
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The observation of non-classical correlations arising in interacting two to size weakly coupled Bose-Einstein condensates was recently reported by Esteve et al. [Nature 455, 1216 (2008)]. In order to observe fluctuations below the standard quantum limit, they utilized adiabatic passage to reduce the thermal noise to below that of thermal equilibrium at the minimum realizable temperature. We present a theoretical analysis that takes into account the spatial degrees of freedom of the system, allowing us to calculate the expected correlations at finite temperature in the system, and to verify the hypothesis of adiabatic passage by comparing the dynamics to the idealized model.
description: 12 pages, 7 figures
The spatial distribution of stars in open clusters
Creators: name: Sanchez, Nestor
name: Alfaro, Emilio J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this work we study the internal spatial structure of 16 open clusters in the Milky Way spanning a wide range of ages. For this, we use the minimum spanning tree method (the Q parameter, which enables one to classify the star distribution as either radially or fractally clustered), King profile fitting, and the correlation dimension (Dc) for those clusters with fractal patterns. On average, clusters with fractal-like structure are younger than those exhibiting radial star density profiles. There is a significant correlation between Q and the cluster age measured in crossing time units. For fractal clusters there is a significant correlation between the fractal dimension and age. These results support the idea that stars in new-born clusters likely follow the fractal patterns of their parent molecular clouds, and eventually evolve toward more centrally concentrated structures. However, there can exist stellar clusters as old as 100 Myr that have not totally destroyed their fractal structure. Finally, we have found the intriguing result that the lowest fractal dimensions obtained for the open clusters seem to be considerably smaller than the average value measured in galactic molecular cloud complexes.
description: To appear in the proceedings of IAU Symposium 266: "Star Clusters: Basic Galactic Building Blocks Throughout Time And Space", eds. R. de Grijs and J. Lepine
title: Formation of chalcogenide-templated inorganic clusters via building block control
Creators: name: Purcell, Jamie W.
Publisher: name: University of Glasgow
Year: 2017
Subjects: subject: Inorganic chemistry, coordination chemistry, materials chemistry, structural determination, self-assembly, chalcogenides, polyoxometalates, inorganic synthesis, supramolecular chemistry.

description: This body of work is concerned with the synthesis and characterisation of new inorganic clusters based on the [Mo2O2S2]2+ dimeric unit. By utilising simple chalcogenide building blocks, we have discovered several collections of new compounds and gained valuable insight into the self-assembly process that governs the formation of inorganic supramolecular materials.

Three clusters were successfully discovered and characterised with the tellurite anion, TeO32-, as the only template- the first confirmation that this species is is able to act as a template in this system with no other templating agents present. The template was observed to form five different building blocks with the dimer, which then combined to form the full clusters. While the basic architecture is consistent with precedents that had already been set for this chemistry, none of the building blocks had been observed before. This template was found to have a remarkable symmetry lowering effect on the structures, with the first fully inorganic chiral polyoxothiometalate cluster a part of this set.

When the squarate anion, C4O42-, a species already proven to template a vast array of structures in this system, was introduced to add an element of competition between the two templates, another new collection of four compounds was discovered. A valuable discovery here was that squarate was the preferred template, as shown by the fact that most of the building blocks from which these compounds were derived had been observed before in compounds where squarate was the only template present. Over the course of this investigation, it was observed that no variable has a greater influence over the reaction system than pH, and identifying the optimal pH ranges for each compound allowed for the creation of a rudimentary map of the parameter space that governs the self-assembly process

With the selenite anion being established as a viable POTM template in previous work, it was also added to the squarate anion so it could compete in a similar manner to tellurite. In addition to this, mononuclear molybdate anions were added to the system as a third potential templating agent in an effort to increase the competition even further. The results of these studies were the discovery of five new compounds, two from the dual-templated reactions, and three compounds from reactions with three templates present. These compounds were based on a common library of three building blocks, one of which was newly discovered with these compounds.
Charge and spin transport in strongly correlated one-dimensional quantum systems driven far from equilibrium
Creators: name: Benenti, Giuliano
name: Casati, Giulio
name: Prosen, Tomaz
name: Rossini, Davide
name: Znidaric, Marko
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the charge conductivity in one-dimensional prototype models of interacting particles, such as the Hubbard and the t-V spinless fermion model, when coupled to some external baths injecting and extracting particles at the boundaries. We show that, if these systems are driven far from equilibrium, a negative differential conductivity regime can arise. The above electronic models can be mapped into Heisenberg-like spin ladders coupled to two magnetic baths, so that charge transport mechanisms are explained in terms of quantum spin transport. The negative differential conductivity is due to oppositely polarized ferromagnetic domains which arise at the edges of the chain, and therefore inhibit spin transport: we propose a qualitative understanding of the phenomenon by analyzing the localization of one-magnon excitations created at the borders of a ferromagnetic region. We also show that negative differential conductivity is stable against breaking of integrability. Numerical simulations of non-equilibrium time evolution have been performed by employing a Monte-Carlo wave function approach and a matrix product operator formalism.
description: 20 pages, 19 figures. Published version
Helioseismic Travel-Time Definitions and Sensitivity to Horizontal Flows Obtained From Simulations of Solar Convection
Creators: name: Couvidat, S.
name: Birch, A. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We study the sensitivity of wave travel times to steady and spatially homogeneous horizontal flows added to a realistic simulation of the solar convection performed by Robert F. Stein, Ake Nordlund, Dali Georgobiani, and David Benson. Three commonly used definitions of travel times are compared. We show that the relationship between travel-time difference and flow amplitude exhibits a non-linearity depending on the travel distance, the travel-time definition considered, and the details of the time-distance analysis (in particular, the impact of the phase-speed filter width). For times measured using a Gabor wavelet fit, the travel-time differences become nonlinear in the flow strength for flows of about 300 m/s, and this non-linearity reaches almost 60% at 1200 m/s (relative difference between actual travel time and expected time for a linear behaviour). We show that for travel distances greater than about 17 Mm, the ray approximation predicts the sensitivity of travel-time shifts to uniform flows. For smaller distances, the ray approximation can be inaccurate by more than a factor of three.
description: 24 pages, 10 figures
London penetration depth and superfluid density in single crystals of Fe(Te,Se) and Fe(Te,S) superconductors
Creators: name: Kim, H.
name: Martin, C.
name: Gordon, R. T.
name: Tanatar, M. A.
name: Hu, J.
name: Qian, B.
name: Mao, Z. Q.
name: Hu, Rongwei
name: Petrovic, C.
name: Salovich, N.
name: Giannetta, R.
name: Prozorov, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The in-plane London penetration depth, $λ(T)$, was measured in single crystals of the iron-chalcogenide superconductors Fe$_{1.03}$(Te$_{0.63}$Se$_{0.37}$) and Fe$_{1.06}$(Te$_{0.88}$S$_{0.14}$) by using a radio-frequency tunnel diode resonator. As is also the case for the iron-pnictides, these iron-chalcogenides exhibit a nearly quadratic temperature variation of $λ(T)$ at low temperatures. The absolute value of the penetration depth in the $T \to 0$ limit was determined for Fe$_{1.03}$(Te$_{0.63}$Se$_{0.37})$ by using an Al coating technique, giving $λ(0)\approx560 \pm 20$ nm. The superfluid density $ρ_s(T)=λ^2(0)/λ^2(T)$ was fitted with a self-consistent two-gap $γ-$model. While two different gaps are needed to describe the full-range temperature variation of $ρ_s(T)$, a non-exponential behavior at low temperatures requires additional factors, such as scattering and/or significant gap anisotropy.
GaGa: A parsimonious and flexible model for differential expression analysis
Creators: name: Rossell, David
Publisher: name: arXiv
Year: 2009
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Hierarchical models are a powerful tool for high-throughput data with a small to moderate number of replicates, as they allow sharing information across units of information, for example, genes. We propose two such models and show its increased sensitivity in microarray differential expression applications. We build on the gamma--gamma hierarchical model introduced by Kendziorski et al. [Statist. Med. 22 (2003) 3899--3914] and Newton et al. [Biostatistics 5 (2004) 155--176], by addressing important limitations that may have hampered its performance and its more widespread use. The models parsimoniously describe the expression of thousands of genes with a small number of hyper-parameters. This makes them easy to interpret and analytically tractable. The first model is a simple extension that improves the fit substantially with almost no increase in complexity. We propose a second extension that uses a mixture of gamma distributions to further improve the fit, at the expense of increased computational burden. We derive several approximations that significantly reduce the computational cost. We find that our models outperform the original formulation of the model, as well as some other popular methods for differential expression analysis. The improved performance is specially noticeable for the small sample sizes commonly encountered in high-throughput experiments. Our methods are implemented in the freely available Bioconductor gaga package.
description: Published in at http://dx.doi.org/10.1214/09-AOAS244 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Supplementary document for Experimental certification of quantum dimensions and irreducible high-dimensional quantum systems with independent devices - 4723334.pdf
Creators: name: Li, Chuanfeng
name: Sun, Yong-Nan
name: Liu, Zhao-Di
name: Bowles, Joseph
name: Chen, Geng
name: Xu, Xiao-Ye
name: Tang, Jian-Shun
name: Guo, Guang-can
Publisher: name: Optica Publishing Group
Year: 2020
Subjects: Uncategorized

description: supplementary material
Creating Conversos: The Carvajal-Santa María Family in Early Modern Spain
Creators: name: Martínez-Dávila, Roger Louis
Publisher: name: University of Notre Dame
Year: 2023

description: In Creating Conversos, Roger Louis Martínez-Dávila skillfully unravels the complex story of Jews who converted to Catholicism in Spain between the fourteenth and sixteenth centuries, migrated to colonial Mexico and Bolivia during the conquest of the Americas, and assumed prominent church and government positions. Rather than acting as alienated and marginalized subjects, the conversos were able to craft new identities and strategies not just for survival but for prospering in the most adverse circumstances. Martínez-Dávila provides an extensive, elaborately detailed case study of the Carvajal-Santa María clan from its beginnings in late fourteenth-century Castile. By tracing the family ties and intermarriages of the Jewish rabbinic ha-Levi lineage of Burgos, Spain (which became the converso Santa María clan) with the Old Christian Carvajal line of Plasencia, Spain, Martínez-Dávila demonstrates the family’s changing identity, and how the monolithic notions of ethnic and religious disposition were broken down by the group and negotiated anew as they transformed themselves from marginal into mainstream characters at the center of the economies of power in the world they inhabited. They succeeded in rising to the pinnacles of power within the church hierarchy in Spain, even to the point of contesting the succession to the papacy and overseeing the Inquisitorial investigation and execution of extended family members, including Luis de Carvajal “The Younger” and most of his immediate family during the 1590s in Mexico City.

Martinez-Dávila offers a rich panorama of the many forces that shaped the emergence of modern Spain, including tax policies, rivalries among the nobility, and ecclesiastical politics. The extensive genealogical research enriches the historical reconstruction, filling in gaps and illuminating contradictions in standard contemporary narratives. His text is strengthened by many family trees that assist the reader as the threads of political and social relationships are carefully disentangled.
Studies on the biosynthesis of coumarins
Creators: name: Verma, Ashok Kumar
Publisher: name: University of British Columbia
Year: 2011

description: This thesis describes the investigations on the biosynthesis of coumarins from Thamnosma montana Torr. and Frem plants and tissue cultures. Part I of this thesis discusses the degradative sequences developed for the furanocoumarins, isoimperatorin (13), allimperatorin methyl ether (7) and isopimpinellin (2) and for the coumarin, umbelliprenin (9). These degradative sequences were developed to gain information as to the distribution of radioactivity in the radioactive compounds made available from the subsequent biosynthetic studies. In Part II of this thesis, the role of mevalonate (85) in the biosynthesis of the alkyl side chains and the furan ring of furano- coumarins of Thamnosma montana tissue cultures is described. In preliminary studies, it was shown that D,L-phenylalanine-[3-¹⁴C] was being efficiently incorporated into three furanocoumarins, isoimperatorin (13), alloimperatorin methyl ether (7) and isopimpinellin (2). Incorporation experiments with various tritium labelled forms of mevalonic acid showed that mevalonic acid-[5-³H] was being incorporated into the alkyl side chain and the 6-position of the furan ring of the furanocoumarins. Similarly, experiments with mevalonic acid-[4-³H] indicated it to be a precursor of the alkyl side chains and the 7- position of the furan ring of the furanocoumarins. Mevalonic acid- [2-³H] was incorporated into the alkyl side chains but was not incorporated into the furan ring. Incorporation studies with mevalonic acid-[5-¹⁴C] supported the data already obtained with mevalonic acid- [5-³H] and revealed that any activity in the methoxy groups of furanocoumarins obtained from the [5-³H]- and [2-³H]-mevalonic acid feeding experiments was either due to a tritium exchange between the tritiated mevalonic acid and the C₁-pool in the tissue culture system or by some other unknown mechanism. Part III of this thesis describes the role of glycine (124) in the biosynthesis of the coumarins, umbelliprenin (9), alloimperatorin methyl ether (7) and isopimpinellin (2), in Thamnosma montana plants. By specific degradations, it was shown that glycine-[2-¹⁴C] was acting as an efficient precursor of the methoxyl groups of alloimperatorin methyl ether (7) and isopimpinellin (2). Glycine-[2-¹⁴C] was also shown to incorporate almost exclusively into the farnesyl-ether side chain of umbelliprenin (9) and to a small extent into the C₅-alkyl side chain of allimperatorin methyl ether (7). However, very little activity could be found in the furan ring and the coumarin portion of alloimperatorin methyl ether (7) and isopimpinellin (2). These results suggest that glycine-[2-¹⁴C] is acting as an efficient precursor of the C₁ source in Thamnosma montana plants and can also be utilized by the plant system for the biosynthesis of the C₅-alkyl side chain and, in turn, the C₁₅-alkyl-ether side chain of alloimperatorin methyl ether (7) and umbelliprenin (9), respectively.
Heavy-quark energy loss in pQCD and SYM plasmas
Creators: name: Marquet, Cyrille
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider heavy-quark energy loss and pT-broadening in a strongly-coupled N=4 Super Yang Mills (SYM) plasma, and the problem of finite-extend matter is addressed. When expressed in terms of the appropriate saturation momentum, one finds identical parametric forms for the energy loss in pQCD and SYM theory, while pT-broadening is radiation dominated in SYM theory and multiple scattering dominated in pQCD.
description: 5 pages, 2 figures, Proceedings of the IIIrd Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus-Nucleus Collisions (HotQuarks08), Estes Park, USA, August 18-23 2008
Testing Oscillating Primordial Spectrum and Oscillating Dark Energy with Astronomical Observations
Creators: name: Liu, Jie
name: Li, Hong
name: Xia, Junqing
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper we revisit the issue of determining the oscillating primordial scalar power spectrum and oscillating equation of state of dark energy from the astronomical observations. By performing a global analysis with the Markov Chain Monte Carlo method, we find that the current observations from five-year WMAP and SDSS-LRG matter power spectrum, as well as the "union" supernovae sample, constrain the oscillating index of primordial spectrum and oscillating equation of state of dark energy with the amplitude less than $|n_{\rm amp}|<0.116$ and $|w_{\rm amp}|<0.232$ at 95% confidence level, respectively. This result shows that the oscillatory structures on the primordial scalar spectrum and the equation of state of dark energy are still allowed by the current data. Furthermore, we point out that these kinds of modulation effects will be detectable (or gotten a stronger constraint) in the near future astronomical observations, such as the PLANCK satellite, LAMOST telescope and the currently ongoing supernovae projects SNLS.
description: 7 pages, 5 figures, 1 tabel
Electromyographic analysis of covert responses during global and selective stop-signal tasks : implications for theoretical models of stopping behaviour
Creators: name: Read, AZ
Publisher: name: University Of Tasmania
Year: 2023

description: The current study investigated inhibitory control mechanisms and models of action cancellation. Twenty-five participants (9 male) aged between 19-40 years (M=23.96, SD=4.50) responded to a visual 'go' cue by depressing stiff or compliant buttons with their index fingers (bimanual Go task). On 30% trials, a stop-signal required countermanding of the left, right or both responses (i.e., selective or global stopping). Electromyographic (EMG) analysis determined the nature of responses in each hand, and enabled covert muscle activity (partial response) to be observed in successful stop trials. Significantly, more partial responses were observed with the stiff compared to the compliant button, and also led to degraded inhibitory control as indicated by longer stop-signal reaction times. Moreover, the presence of these partial responses challenges the assumptions of the traditional horse race model of inhibitory control, indicating that the go and stopping processes interact with one another prior to, and following, the initiation of the go response. The method employed to assess partial responses detected many more partial responses than the previous literature, indicating the utility of the technique for future research, which could aim to develop our understanding of inhibitory control across the lifespan from both a behavioural and computational modelling perspective.
Magnetic Coupling in the Quiet Solar Atmosphere
Creators: name: Steiner, O.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Three kinds of magnetic couplings in the quiet solar atmosphere are highlighted and discussed, all fundamentally connected to the Lorentz force. First the coupling of the convecting and overshooting fluid in the surface layers of the Sun with the magnetic field. Here, the plasma motion provides the dominant force, which shapes the magnetic field and drives the surface dynamo. Progress in the understanding of the horizontal magnetic field is summarized and discussed. Second, the coupling between acoustic waves and the magnetic field, in particular the phenomenon of wave conversion and wave refraction. It is described how measurements of wave travel times in the atmosphere can provide information about the topography of the wave conversion zone, i.e., the surface of equal Alfvén and sound speed. In quiet regions, this surface separates a highly dynamic magnetic field with fast moving magnetosonic waves and shocks around and above it from the more slowly evolving field of high-beta plasma below it. Third, the magnetic field also couples to the radiation field, which leads to radiative flux channeling and increased anisotropy in the radiation field. It is shown how faculae can be understood in terms of this effect. The article starts with an introduction to the magnetic field of the quiet Sun in the light of new results from the Hinode space observatory and with a brief survey of measurements of the turbulent magnetic field with the help of the Hanle effect.
description: To appear in "Magnetic Coupling between the Interior and the Atmosphere of the Sun", eds. S.S. Hasan and R.J. Rutten, Astrophysics and Space Science Proceedings, Springer-Verlag, Heidelberg, Berlin, 2009
title: Future of Great Salt Lake Survey
Creators: name: Welsh, Lisa W.
name: Endter-Wada, Joanna
name: Kettenring, Karin M.
name: McEntire, Anna
Publisher: name: Utah State University
Year: 2023

description: The Future of Great Salt Lake Survey was conducted in fall 2022 when state and global attention on Great Salt Lake was ramping up, following record lows of the elevation of lake water levels. In the survey, we asked Utahns their opinions on securing water for Great Salt Lake and focused on strategies that individuals, local communities, and the state of Utah could pursue. When it comes to how water is used and managed in Utah, there are multiple actors and institutions who all make decisions and have authority or ability to take different actions. While the state of Utah can guide growth and development and manages the state’s water resources, local county, city and town governments are primarily responsible for land use planning and delivering water to their residents. We also sought to understand what individuals would commit to do for Great Salt Lake and under what conditions. Understanding Utahns’ support for strategies across the three scales of the state, local communities, and individual is helpful, because actions across all three scales are not always coordinated. With greater emphasis on coordination and cooperation to solve the problem of a drying Great Salt Lake, the results of our survey are intended to help policymakers better implement strategies across the three scales.
High resolution photoelectron spectroscopy of some polyatomic molecules
Creators: name: Katrib, Ali
Publisher: name: University of British Columbia
Year: 2011

description: The construction of a high resolution photoelectron spectrometer (15 mV) has enabled detailed study of molecular ionization potentials. A brief account of historical and experimental developments is described. Spectra of some "divalent" sulphur-containing compounds have been recorded, and the effect of different alkyl groups on the sulphur "non-bonding" orbital is discussed. 3d orbital participation in some thionyl and sulphury1 halides (SOCl₂, SO₂Cl₂, SOF₂ and SO₂F₂) is considered in the interpretation of the spectra. The inductive and resonance effects in some dibromoethylenes is discussed, and the assignment of bromine "lone pair" orbitals is made. Evidence of (P → d) π bonding in some halisalanes SiH₃X (X = F, Cl, Br) and SiH[sub 4-n]X[sub n] (X = Cl) is discussed, and compared with analogous carbon containing compounds. CNDO/2 and INDO semi-empirical calculations are used in order to assist the assignment of the PE spectra.
FCNC Processes Waiting for the Next Decade
Creators: name: Buras, Andrzej J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: FCNC processes are expected to offer us a deep insight into the physics at very short distance scales. We present a list of 20 goals in quark and lepton flavour physics that could be reached already in the next decade. This list includes also flavour conserving observables like electric dipole moments of the neutron and leptons and (g-2)_μ. Subsequently we will present some aspects of these goals by concentrating on supersymmetric flavour models. A much more extensive presentation of this material can be found in my recent EPS09 talk.
description: 16 pages, 5 figures, Presented at the Flavianet topical workshop: Low energy constraints on extensions of the Standard Model
VLT/NACO coronagraphic observations of fine structures in the disk of beta Pictoris
Creators: name: Boccaletti, A.
name: Augereau, J. -C.
name: Baudoz, P.
name: Pantin, E.
name: Lagrange, A. -M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present ground-based observations of the disk around the A-type star $β$ Pictoris to perform a close inspection of the inner disk morphology. Images were collected with NACO, the AO-assisted near-IR instrument on the VLT (ESO) which includes two types of coronagraphs: classical Lyot masks and phase masks. In this program we took advantage of both types of coronagraphs in two spectral bands, H-band for the Lyot mask and Ks-band for the phase mask. In addition, we simulated an extended object to understand the limitations in deconvolution of coronagraphic images. The reduced coronagraphic images allow us to carefully measure the structures of the debris disk and reveal a number of asymmetries of which some were not reported before (position, elevation and thickness of the warp). In this program, the circumstellar material is visible as close as 0.7" ($13.5 $AU) owing to the phase mask while the Lyot mask generates artifacts which hamper the detection of the dust at separations closer than 1.2" ($23.2 $AU). The point source detection limit is compared to recently published observations of a planet candidate. Finally, the simulations show that deconvolution of coronagraphic data may indeed produce artificial patterns within the image of a disk.
description: 13 pages, to appear in Astronomy and Astrophysics
Universality of collapsing two-dimensional self-avoiding trails
Creators: name: Foster, D P
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Results of a numerically exact transfer matrix calculation for the model of Interacting Self-Avoiding Trails are presented. The results lead to the conclusion that, at the collapse transition, Self-Avoiding Trails are in the same universality class as the O(n=0) model of Blote and Nienhuis (or vertex-interacting self-avoiding walk), which has thermal exponent $ν=12/23$, contrary to previous conjectures.
description: Final version, accepted for publication in Journal of Physics A; 9 pages; 3 figures
On the use of structure functions to study blazar variability: caveats and problems
Creators: name: Emmanoulopoulos, Dimitrios
name: McHardy, Ian M.
name: Uttley, Phil
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The extensive use of the structure function (SF) in the field of blazar variability suggests that characteristics time-scales are embedded in the light curves of these objects. We argue that for blazar variability studies, the SF results are sometimes erroneously interpreted leading to misconceptions about the actual source properties. Based on extensive simulations we caution that spurious breaks will appear in the SFs of almost all light curves, even though these light curves may contain no intrinsic characteristic time-scales. i.e. having a featureless underlying power-spectral-density (PSD). We show that the time-scales of the spurious SF-breaks depend mainly on the length of the artificial data set and also on the character of the variability i.e. the shape of the PSD. The SF is often invoked in the framework of shot-noise models to determine the temporal properties of individual shots. We caution that although the SF may be fitted to infer the shot parameters, the resultant shot-noise model is usually inconsistent with the observed PSD. As any model should fit the data in both the time and the frequency domain the shot-noise model, in these particular cases, can not be valid. Moreover, we show that the lack of statistical independence between adjacent SF points, in the standard SF formulation, means that it is not possible to perform robust statistical model fitting following the commonly used least-squares fitting methodology. The latter yields uncertainties in the fitting parameters (i.e. slopes, breaks) that are far too small with respect to their true statistical scatter. Finally, it is also commonly thought that SFs are immune to the sampling problems, such as data gaps, which affects the estimators of the PSDs. However we show that SFs are also troubled by gaps which can induce artefacts.
description: Accepted for publication in MNRAS, 18 pages, 14 figures
Willingness to Accept Incentives for a Shift to Climate-Smart Agriculture among Lowland Rice Farmers in Nigeria
Creators: name: Kehinde, M. O.
name: Shittu, A. M.
name: Osunsina, I. O. O.
name: Kehinde, M. O.
name: Shittu, A. M.
name: Osunsina, I. O. O.
Publisher: name: Unknown
Year: 2019
Subjects: subject: Environmental Economics and Policy
subject: Willingness to accept incentives
subject: Climate-smart agriculture
subject: Lowland rice
subject: Nigeria

description: Climate change threatens agriculture and food systems in sub-Saharan Africa (SSA). Hence, shifting to agricultural practices that are climate-friendly is crucial in building resilience and reducing greenhouse gas (GHG) emissions in the pursuit of Sustainable Development Goal two (2) in SSA. This study aims to assess the preferences for shifting to agricultural practices with CSA potentials (AP-CSAPs) and to estimate the trade-off with respect to price and other attributes among lowland rice farmers in Nigeria. We used choice experiment data collected from 462 farmers in five geopolitical zones in Nigeria. Our result revealed that farmers significantly (p<0.01) showed strong preference for rice varieties that have early and medium maturing as against that of late maturing varieties. Similarly, preference was given to farmers that practiced intermittently flooding and rain-fed relative to continuously flooding the rice farm. Likewise, exporting straw from the farm to feed livestock was significantly (p<0.01) preferred to incorporating the straw into the soil for more than 30 days before cultivation as against straw incorporation less than 30 days. The study concludes that lowland rice farmers are willing to accept incentives to shift to AP-CSAPs provided the policy actions that will facilitate the implementation of all the hypothetical attributes and incentives are put in place by the government and relevant stakeholders.