cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Macroscopic analysis of time dependent plasticity in Ti alloys
Creators: name: Xiong, Yi
name: Karamched, Phani S.
name: Nguyen, Chi-Toan
name: Collins, David M.
name: Magazzeni, Christopher M.
name: Tarleton, Edmund
name: Wilkinson, Angus J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Component failure due to cold dwell fatigue of titanium and its alloys is a long-standing problem which has significant safety and economic implications to the aviation industry. This can be addressed by understanding the governing mechanisms of time dependent plasticity behaviour of Ti at low temperatures. Here, stress relaxation tests were performed at four different temperatures on three major alloy systems: commercially pure titanium (two alloys with different oxygen content), Ti-6Al-4V (two microstructures with differing beta phase fractions) and Ti-6Al-2Sn-4Zr-xMo (two alloys with different Mo content x= 2 or 6, and portion of beta phase). Key parameters controlling the time dependent plasticity were determined as a function of temperature. Both activation volume and energy were found to increase with temperature in all six alloys. It was found that the dwell fatigue effect is more significant by oxygen alloying but is suppressed by the addition of Mo. The presence of the beta phase did not strongly affect the dwell fatigue, however, it was suppressed at high temperature due to the low strain rate and strain rate sensitivity.
(100212) William Herbert
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A simplified algorithm for the topological entropy of multimodal maps
Creators: name: Amigó, José M.
name: Giménez, Angel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: A numerical algorithm to compute the topological entropy of multimodal maps is proposed. This algorithm results from a closed formula containing the so-called min-max symbols, which are closely related to the kneading symbols. Furthermore, it simplifies a previous algorithm, also based on min-max symbols, which was originally proposed for twice differentiable multimodal maps. The new algorithm has been benchmarked against the old one with a number of multimodal maps, the results being reported in the paper. In particular, the comparison is favorable to the new algorithm, except in the unimodal case.
AS NARRATIVAS DIGITAIS NA APRENDIZAGEM DOS ALUNOS DO 1.o CICLO DO ENSINO BÁSICO
Creators: name: Vasconcelos, Susana
Publisher: name: Internet Latent Corpus Journal
Year: 2019

description: As narrativas digitais desempenham um papel muito relevante nas aprendizagens dos alunos, quer na aquisição de conhecimentos, competências e valores, quer nas atividades de carácter lúdico. Neste sentido, o concurso “Conta-nos uma História – podcast na Educação”, promovido pelo Ministério da Educação (ME) apresentou, recentemente, uma nova categoria de participação, introduzindo a língua inglesa para o conto de histórias digitais, intitulada “Once Upon a Time...”. É de referir que o inglês faz parte do currículo do 1.o ciclo do ensino básico, obrigatório para os 3.o e 4.o anos de escolaridade. Neste artigo propomo-nos apresentar uma experiência de ensino e aprendizagem realizada no âmbito de sala de aula, para alunos do primeiro ciclo do ensino básico, em articulação com a disciplina de inglês, baseada na metodologia de projeto e na aprendizagem colaborativa, que teve como produto final uma narrativa digital para o concurso “Conta-nos uma História”.
description: Internet Latent Corpus Journal, Vol 8 No 1 (2018)
Cutaneous IgA Deposits in Bullous Diseases Function as Ligands to Mediate Adherence of Activated Neutrophils
Creators: name: Mangum, Karen
name: Hendrix, John
name: Zone, John
name: Gammon, W. Ray
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: Linear IgA bullous dermatosis and dermatitis herpetiformis are inflammatory subepidermal blistering diseases characterized by IgA deposits at the cutaneous epithelial basement membrane and in dermal papillae, respectively. Inflammation in both disorders localizes to sites of IgA deposition and is characterized by a predominance of neutrophils. From these observations we postulate that IgA deposits in both diseases may contribute to the recruitment and/or localization of neutrophils. In this study we examined the ability of in vitro and in vivo bound IgA anti-basement membrane autoantibodies from patients with linear IgA builbus dermatosis and in vivo bound IgA deposits in dermal papillae from patients with dermatitis herpetiformis to mediate adherence of neutrophils stimulated by granulocyte macrophage colony-stimulating factor. The study showed that stimulated neutrophils adhered to basement membranes and dermal papillae containing IgA deposits. Adherence was IgA anti-basement membrane antibody concentration dependent and correlated with the immunofluorescence staining intensity of IgA deposits in dermal papillae. Adherence to IgA deposits but not IgG deposits could be inhibited by purified exogenous secretory IgA but not IgG and adherence to IgG deposits could be inhibited by purified exogenous IgG but not secretory IgA. These results provide direct experimental evidence that cutaneous IgA deposits in linear IgA bullous dermatosis and dermatitis herpetiformis can function as ligands for neutrophil adherence and have a role in the localization of inflammation in these disorders.
Long-Lasting Black-Hole Jets in Short Gamma-Ray Bursts
Creators: name: Kisaka, Shota
name: Ioka, Kunihito
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Whether a short gamma-ray burst (GRB) is caused by a black hole (BH) or a neutron star (NS) after the merger of a NS binary is a crucial problem. We propose a BH model that explains short GRBs with long-lasting activities such as extended emission and plateau emission up to $\sim10000$ s. To extract the BH rotational energy, the topological evolution of the magnetic field should accompany the mass ejection, mass fallback, and magnetic field reconnection. The observations suggest the magnetic field decay from $\sim10^{14}$ G to $\sim10^{13} - 10^{11}$ G at the BH, bounded below by the pre-merger strength and kept constant while the luminosity is constant, and the fallback mass of $\sim10^{-4} - 10^{-2} M_{\odot}$, comparable to the ejecta mass implied by the macronova (or kilonova) in GRB 130603B. The BH model has implications for gravitational waves and the equation of state of NS matter.
description: 7 pages, 4 figures. Accepted for publication in Astrophysical Journal Letters
SUPERVISÃO: REPRESENTAÇÕES NAS PRÁTICAS E DESENVOLVIMENTO PROFISSIONAL
Creators: name: Ramalho, Andreia
Publisher: name: Internet Latent Corpus Journal
Year: 2019

description: Atualmente as organizações, tais como a escola e os hospitais definem metas, objetivos e dinâmicas com fim à melhoria da prestação de um serviço eficaz. Desta forma, temos como objetivo neste trabalho encontrar e definir o conceito de supervisão e desenvolvimento profissional, assim como conceitos-chave coincidentes na forma como são definidos nas áreas de formação dos autores desta meta-análise. Assim, utilizámos uma metodologia de paradigma interpretativo-qualitativo, na análise de 12 artigos diferenciados pela área de formação de cada um dos autores. Os resultados desta pesquisa afirmam que os docentes, assim como os enfermeiros, veem a supervisão como impulsionadora para a atualização de conhecimentos profissionais. Concluímos, que a supervisão é um conceito que está intimamente relacionado com o desenvolvimento profissional dos docentes e dos enfermeiros, apesar das práticas profissionais terem objetivos diferenciados.
description: Internet Latent Corpus Journal, Vol 8 No 1 (2018)
(100208) John R Hughes
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
OzDES Reverberation Mapping Program: H$β$ lags from the 6-year survey
Creators: name: Malik, Umang
name: Sharp, Rob
name: Penton, A.
name: Yu, Z.
name: Martini, P.
name: Lidman, C.
name: Tucker, B. E.
name: Davis, T. M.
name: Lewis, G. F.
name: Aguena, M.
name: Allam, S.
name: Alves, O.
name: Andrade-Oliveira, F.
name: Asorey, J.
name: Bacon, D.
name: Bertin, E.
name: Bocquet, S.
name: Brooks, D.
name: Burke, D. L.
name: Rosell, A. Carnero
name: Carollo, D.
name: Kind, M. Carrasco
name: Carretero, J.
name: Costanzi, M.
name: da Costa, L. N.
name: Pereira, M. E. S.
name: De Vicente, J.
name: Desai, S.
name: Diehl, H. T.
name: Doel, P.
name: Everett, S.
name: Ferrero, I.
name: Frieman, J.
name: García-Bellido, J.
name: Gerdes, D. W.
name: Gruen, D.
name: Gruendl, R. A.
name: Gschwend, J.
name: Hinton, S. R.
name: Hollowood, D. L.
name: Honscheid, K.
name: James, D. J.
name: Kuehn, K.
name: Marshall, J. L.
name: Mena-Fernández, J.
name: Menanteau, F.
name: Miquel, R.
name: Ogando, R. L. C.
name: Palmese, A.
name: Paz-Chinchón, F.
name: Pieres, A.
name: Malagón, A. A. Plazas
name: Raveri, M.
name: Rodriguez-Monroy, M.
name: Romer, A. K.
name: Sanchez, E.
name: Scarpine, V.
name: Sevilla-Noarbe, I.
name: Smith, M.
name: Soares-Santos, M.
name: Suchyta, E.
name: Swanson, M. E. C.
name: Tarle, G.
name: Taylor, G.
name: Tucker, D. L.
name: Weaverdyck, N.
name: Wilkinson, R. D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Reverberation mapping measurements have been used to constrain the relationship between the size of the broad-line region and luminosity of active galactic nuclei (AGN). This $R-L$ relation is used to estimate single-epoch virial black hole masses, and has been proposed for use to standardise AGN to determine cosmological distances. We present reverberation measurements made with H$β$ from the six-year Australian Dark Energy Survey (OzDES) Reverberation Mapping Program. We successfully recover reverberation lags for eight AGN at $0.12
description: Published in MNRAS
Introduction to Continuous Testing for Scientific Software
Creators: name: Kabadshow, Ivo
Publisher: name: Zenodo
Year: 2023
Subjects: Testing, Continuous Testing, RSE, Research Software Engineering,

description: This is Episode 1 of the special series 'HiRSE Summer of Testing' and is given by Ivo Kabadshow, titled 'Introduction to Continuous Testing'. The video accompanying these slides can be found on our YouTube channel.
title: Investigating variability in marine mollusk carbonates using infrared spectroscopy and radiocarbon analysis
Creators: name: Dusseault, Marisa
Publisher: name: Memorial University of Newfoundland
Year: 2021

description: Marine bivalve mollusks are complex hierarchical calcium carbonate (CaCO₃) materials that are frequently used in archaeological studies and in chronologies that are used to study marine environment and climate change. Radiocarbon (¹⁴C) analysis of these materials is central to most of these studies. I study the variability of ¹⁴C signatures within marine bivalve mollusk shells from British Columbia, Canada by considering both the raw, uncalibrated fraction of modern carbon measurements and the calibrated age ranges. I use infrared (IR) spectroscopy as a method to screen for diagenesis - contamination or alteration of the original shell CaCO₃ - prior to radiocarbon analysis, and as a method to investigate the natural variability in the composition and structure of the shell CaCO₃. Using IR spectroscopy, I show that in three archaeological samples of the butter clam (Saxidomus gigantea) from Sechelt, British Columbia, only one shell contained contaminating calcite. However, analysis of the relative IR peak intensities showed a consistent difference between the inner nacreous aragonite layer and the outer crossed lamellar aragonite layer for all three shells. This consistent difference is likely correlated with that natural variability in aragonite microstructures. Three other archaeological shell samples from Deep Bay and Comox, British Columbia, were analyzed for ¹⁴C at three different locations within each of the shells. One sample displayed a variation in fraction of modern carbon within the shell while the others did not. I highlight that ¹⁴C measurements are meaningless without an understanding of date calibration and the choices that must be made when calibrating marine and mixed marine-terrestrial samples. My results are a starting point for developing best practices for ¹⁴C dating marine shell samples and for more focused studies on the links between crystallinity, diagenesis, and ¹⁴C.
Distributed Transmission and Spatially Coupled Forward Error Correction in Regenerative Multipoint-to-Point Networks
Creators: name: Schmalen, Laurent
name: Eriksson, Tobias A.
name: Buchali, Fred
name: Dischler, Roman
name: Gebhard, Ulrich
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We investigate the performance of coded modulation for multi-hop regenerative optical networks. We analyze options for computing decoder input LLRs, show reach increases by optimized regenerator placement and experimentally compare strategies and guidelines for distributed FEC.
description: published at European Conference on Optical Communication (ECOC) 2017
Enhanced Synthesis of Collagenase by Human Keratinocytes Cultured on Type I or Type IV Collagen
Creators: name: Woodley, David
name: Petersen, Marta
name: Stricklin, George
name: O'Keefe, Edward
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: Human keratinocytes in culture are known to produce collagenase. As part of studies to ascertain the physiologic stimuli for collagenase production by keratinocytes, we wanted to determine whether extracellular matrix could modulate the production of collagenase in vitro. Immunoprecipitable collagenase from the conditioned medium of cells grown on different types of matrix was measured. Metabolically labeled human keratinocytes were cultured in 0.1 mM calcium in serum-free medium on colloidal gold-coated coverslips plus type IV collagen, type I collagen, or laminin or in the absence of matrix. Immunoprecipitation of the conditioned medium with anti-collagenase antiserum was performed and the immunoprecipitates were analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis, fluorography, and densitometry. The keratinocytes cultured on type IV or type I collagen produced more collagenase than did those cultured on laminin or in the absence of matrix. This effect did not reflect a general increase in secreted proteins, because the production of tissue inhibitor of metalloproteinase, or TIMP, did not increase under the same conditions. Phagocytosis of the gold salts by the keratinocytes migrating on types I or IV collagen did not account for the increased collagenase produced by these cells since the effect persisted in the absence of the colloidal gold and phagocytosis of latex beads did not augment collagenase production.
Beyond the effective length: How to analyze magnetic interference patterns of thin-film planar Josephson junctions with finite lateral dimensions
Creators: name: Fermin, Remko
name: and, Bob de Wit
name: Aarts, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The magnetic field dependent critical current $I_{\text{c}}(B)$ of a Josephson junction is determined by the screening currents in its electrodes. In macroscopic junctions, a local vector potential drives the currents, however, in thin film planar junctions, with electrodes of finite size and various shapes, they are governed by non-local electrodynamics. This complicates the extraction of parameters such as the geometry of the effective junction area, the effective junction length and, the critical current density distribution from the $I_{\text{c}}(B)$ interference patterns. Here we provide a method to tackle this problem by simulating the phase differences that drive the shielding currents and use those to find $I_{\text{c}}(B)$. To this end, we extend the technique proposed by John Clem [Phys. Rev. B, \textbf{81}, 144515 (2010)] to find $I_{\text{c}}(B)$ for Josephson junctions separating a superconducting strip of length $L$ and width $W$ with rectangular, ellipsoid and rhomboid geometries. We find the periodicity of the interference pattern ($ΔB$) to have geometry independent limits for $L \gg W$ and $L \ll W$. By fabricating elliptically shaped S$-$N$-$S junctions with various aspect ratios, we experimentally verify the $L/W$ dependence of $ΔB$. Finally, we incorporate these results to correctly extract the distribution of critical currents in the junction by the Fourier analysis of $I_{\text{c}}(B)$, which makes these results essential for the correct analysis of topological channels in thin film planar Josephson junctions.
The non-gravitational interactions of dark matter in colliding galaxy clusters
Creators: name: Harvey, David
name: Massey, Richard
name: Kitching, Thomas
name: Taylor, Andy
name: Tittley, Eric
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Collisions between galaxy clusters provide a test of the non-gravitational forces acting on dark matter. Dark matter's lack of deceleration in the `bullet cluster collision' constrained its self-interaction cross-section σ_DM/m < 1.25cm2/g (68% confidence limit) for long-ranged forces. Using the Chandra and Hubble Space Telescopes we have now observed 72 collisions, including both `major' and `minor' mergers. Combining these measurements statistically, we detect the existence of dark mass at 7.6σsignificance. The position of the dark mass has remained closely aligned within 5.8+/-8.2 kpc of associated stars: implying a self-interaction cross-section σ_DM/m < 0.47 cm2/g (95% CL) and disfavoring some proposed extensions to the standard model.
description: 5 Pages, 4 Figures and 18 pages supplementary information
Understanding how Physicians and Nurses Communicate with Dietitians and Perceive their Role in the Nutritional Management of Patients with Inflammatory Bowel Disease within Primary Care in Ontario
Creators: name: Daniel, Manar
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: Inflammatory bowel disease
Primary health care
Healthcare professionals
Interprofessional communication
Role clarification
Dietetic Referrals

description: À la demande de l'auteur, le résumé a été retiré en raison de la nature confidentielle de la thèse. Il sera ajouté une fois la période d'embargo terminée. At the author’s request, the abstract has been removed due to the confidential nature of the thesis. It will be added once the embargo period has passed.
$^{12}$CO emission from the Red Rectangle
Creators: name: Anh, Pham Tuan
name: Diep, Pham Ngoc
name: Hoai, Do Thi
name: Nhung, Pham Tuyet
name: Phuong, Nguyen Thi
name: Thao, Nguyen Thi
name: Darriulat, Pierre
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of an unprecedented quality made by ALMA on the Red Rectangle of CO(3-2) and CO(6-5) emissions are analysed jointly with the aim of obtaining as simple as possible a description of the gas morphology and kinematics. Evidence is found for polar conical outflows and for a broad equatorial torus in rotation and expansion. Simple models of both are proposed. Comparing CO(6-5) and CO(3-2) emissions provides evidence for a strong temperature enhancement over the polar outflows. Continuum emission (dust) is seen to be enhanced in the equatorial region. Observed asymmetries are briefly discussed.
description: 16 pages, 12 figures, typos added, accepted for publication in Research in Astronomy and Astrophysics (RAA)
Hierarchical Quality-Diversity for Online Damage Recovery
Creators: name: Allard, Maxime
name: Smith, Simón C.
name: Chatzilygeroudis, Konstantinos
name: Cully, Antoine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Adaptation capabilities, like damage recovery, are crucial for the deployment of robots in complex environments. Several works have demonstrated that using repertoires of pre-trained skills can enable robots to adapt to unforeseen mechanical damages in a few minutes. These adaptation capabilities are directly linked to the behavioural diversity in the repertoire. The more alternatives the robot has to execute a skill, the better are the chances that it can adapt to a new situation. However, solving complex tasks, like maze navigation, usually requires multiple different skills. Finding a large behavioural diversity for these multiple skills often leads to an intractable exponential growth of the number of required solutions. In this paper, we introduce the Hierarchical Trial and Error algorithm, which uses a hierarchical behavioural repertoire to learn diverse skills and leverages them to make the robot more adaptive to different situations. We show that the hierarchical decomposition of skills enables the robot to learn more complex behaviours while keeping the learning of the repertoire tractable. The experiments with a hexapod robot show that our method solves maze navigation tasks with 20% less actions in the most challenging scenarios than the best baseline while having 57% less complete failures.
description: Accepted at GECCO 2022
(100204) Mary Hughes
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
H$_2$ + H$_2$O -> H$_4$O: Synthesizing Hyper-hydrogenated Water in Small-Sized Fullerenes?
Creators: name: Wang, Endong
name: Gao, Yi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanoscale confinement provides an ideal platform to rouse some exceptional reactions which cannot happen in the open space. Intuitively, H2 and H$_2$O cannot react. Herein, through utilizing small-sized fullerenes (C$_{24}$, C$_{26}$, C$_{28}$, and C$_{30}$) as nanoreactors, we demonstrate that a hyperhydrogenated water species, H$_4$O, can be easily formed using H2 and H$_2$O under ambient conditions by ab initio molecular dynamics simulations.The H$_4$O molecule rotates freely in the cavity of the cages and maintains its structure during the simulations. Further theoretical analysis indicates that H$_4$O in the fullerene possesses high stability thermodynamically and chemically, which can be rationalized by the electron transfer between H$_4$O and the fullerene. This work highlights the possibility of utilizing fullerene as a nanoreactor to provide confinement constraints for unexpected chemistry.
description: This work has been accepted by J. Phys. Chem. A (J. Phys. Chem. A 2023, 127, 5, 1190-1195)
Hypothesen über sozio-strukturelle Auswirkungen der Entwicklungshilfe im ländlichen Raum Westafrikas
Creators: name: Kohnert, Dirk
name: Elwert, Georg
Publisher: name: Zenodo
Year: 1983
Subjects: Entwicklungshilfe
Staatshaushalt
Verschuldung
Entwicklungsländer
Westafrika
ländliche Entwicklung
sozio-ökonomische Differenzierung
Bauernschaft
Schattenhaushalt

description: ABSTRACT & ZUSAMMENFASSUNG: The cumulative impact of successful and unsuccessful rural development projects in Africa since the beginning of colonial rule has been felt in some West African developing countries to such an extent that it has structured the economies and social systems of these countries. The experience of these projects has also had an impact on the mindset of the farmers concerned. Today, development aid (at least for many LLDCs) can be seen as a kind of hidden "shadow budget", which not only serves to divert resources from productive use, but also to widen the gap between the strong and the weak in general. Commercialisation and bureaucratisation - accelerated by development aid - have also led to socio-economic differentiation within the African peasantry and even within individual farming households (along gender and age lines). Finally, the accumulated experience of development aid over two or more generations has had a negative impact on farmers: the apparently change-resistant, tradition-conscious, risk-averse "African farmer" is more the result of this experience than - as is often claimed - a natural inclination of the African farmer.  -------------------------------------------------------------------------------------------------- ZUSAMMENFASSUNG:  Die Gesamtfolgen erfolgreicher wie erfolgloser ländlicher Entwicklungsprojekte in Afrika seit Beginn der Kolonialherrschaft haben sich in bestimmten westafrikanischen Entwicklungsländern in einem solchen Ausmaß bemerkbar gemacht, dass sie die Wirtschaft und das Sozialsystem dieser Länder strukturierten. Die Erfahrungen dieser Projekte hatten auch eine Auswirkung auf die Denkweise der betroffenen Bauern. Heutzutage kann Entwicklungshilfe (zumindest für viele LLDCs) als eine Art getarnter „Schattenhaushalt“ betrachtet werden, der nicht nur dazu führt, Ressourcen von der produktiven Nutzung abzulenken und die Kluft zwischen den Starken und den Schwachen im Allgemeinen zu vergrößern. Kommerzialisierung und Bürokratisierung – beschleunigt durch Entwicklungshilfe – haben auch zu sozioökonomischen Differenzierungen innerhalb der afrikanischen Bauernschaft und sogar innerhalb der einzelnen Bauernhaushalte (entlang von Geschlecht und Alter) geführt. Im Endeffekt haben die angehäuften Erfahrungen mit Entwicklungshilfe von zwei oder mehr Generationen die Bauern negativ geprägt: Der scheinbar veränderungsresistente, traditionsbewusste, risikoscheue „afrikanische Bauer“ ist eher das Ergebnis dieser Erfahrung und entspringt weniger – wie vielfach behauptet – einer natürlichen Neigung des afrikanischen Landwirtes.
Heavy and Light Chain Isotypes of Immunoglobulin in Epidermolysis Bullosa Acquisita
Creators: name: Gammon, W Ray
name: Mooney, Ellen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: Epidermolysis bullosa acquisita (EBA) is a chronic acquired blistering disease with characteristic clinical, pathologic, and immunopathologic features. The disease is characterized immunopathologically by circulating and tissue-bound IgG class autoantibodies (EBA antibodies) to the basement membrane zone of stratified squamous epithelium. Previous studies have shown that circulating and tissue-bound EBA antibodies are heterogenous in their ability to activate complement and have raised the possibility that functional heterogeneity might be related to IgG subclass restriction. In this study, we have characterized the IgG subclasses of the circulating and tissue-bound EBA antibodies by immunofluorescence and have examined the relationship between IgG subclass and complement binding. The results show that EBA antibodies belonging to all IgG subclasses are present in the skin of EBA patients. The results also show that EBA antibodies belonging to all IgG subclasses are present in the sera of most patients, including sera with and without complement binding EBA antibodies.
SAPO CAMPUS COMO ESPAÇO DE APRENDIZAGEM ONLINE: ANÁLISE DAS INTERAÇÕES ENTRE PARTICIPANTES
Creators: name: Barbosa, Cláudia
Publisher: name: Internet Latent Corpus Journal
Year: 2019

description: This paper presents a case study of an online group supporting the curricular unit “Multimedia and Cognitive Architectures”, hosted in the digital communication platform Sapo Campus, with the aim of analyzing interactions between the participants in the five different stages developed in the group. A sociometric analysis of the interactions was conducted using Social Network Analysis, to assess the following indicators: density, centrality and network reciprocity. The interactions have also been categorized, using the Community of Inquiry model. As main results, it can be pointed out that (i) the sociometric analysis has demonstrated that the dynamics established in the different five stages have led to different network configurations and density, to the emergence of active students and reciprocity in the interactions; and (ii) learning becomes more evident when participants can promote their social and cognitive presences, supported by a teaching presence marked by the concept of collaborative and motivating learning.
description: Internet Latent Corpus Journal, Vol 8 No 1 (2018)
Impact of the CDF $W$-mass anomaly on two Higgs doublet model
Creators: name: Heo, Yongtae
name: Jung, Dong-Won
name: Lee, Jae Sik
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the implication of the recent CDF $W$-mass anomaly in the general framework of two Higgs doublet model. We find that the large deviation of the $S$ and $T$ parameters from their SM values of zero leads to the upper limit of about $1$ TeV on the heavy charged and neutral Higgs bosons when it is combined with the theoretical constraints from the perturbative unitarity and for the Higgs potential to be bounded from below.
description: 12 pages, 2 figures, references added. To appear in PLB. Figures updated. arXiv admin note: substantial text overlap with arXiv:2110.03908
Collagen Cross-Linking in Sun-Exposed and Unexposed Sites of Aged Human Skin
Creators: name: Haque, Zia
name: Yamauchi, Mitsuo
name: Woodley, David
name: Prisayanh, Philip
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: A recently described nonreducible, acid-heat stable compound, histidinohydroxylysinonorleucine (HHL), is a collagen cross-link isolated from mature skin tissue. Its abundance is related to chronologic aging of skin. The present communication describes the quantity of HHL from aged human skin of the same individuals in sun-exposed (wrist) and unexposed (buttock) sites. Punch biopsies were obtained from these sites from nine people of age 60 or older. HHL contents (moles/ mole of collagen) at these sites were for wrist 0.13 ± 0.07 and for buttock 0.69 ± 0.17 (mean ± SD, p < 0.001). In addition, it was found that acute irradiation of the cross-linked peptides with UVA (up to 250 J/cm2) and UVB (up to 1 J/cm2) had no effect on HHL structure. The same treatment significantly degraded another nonreducible, stable collagen cross-link, pyridinoline. The results suggest that chronic sunlight exposure may be associated with an impediment to normal maturation of human dermal collagen resulting in tenuous amount of HHL. Thus, the process of photoaging in dermal collagen is different from that of chronologic aging in human skin.
Sensitivity improvements for Shack-Hartmann wavefront sensors using total variation minimisation
Creators: name: Basden, Alastair
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We investigate the improvements in Shack-Hartmann wavefront sensor image processing that can be realised using total variation minimisation techniques to remove noise from these images. We perform Monte-Carlo simulation to demonstrate that at certain signal-to-noise levels, sensitivity improvements of up to one astronomical magnitude can be realised. We also present on-sky measurements taken with the CANARY adaptive optics system that demonstrate an improvement in performance when this technique is employed, and show that this algorithm can be implemented in a real-time control system. We conclude that total variation minimisation can lead to improvements in sensitivity of up to one astronomical magnitude when used with adaptive optics systems.
description: Accepted for publication in MNRAS. Second version has type fixed (now -> not), 3rd version has corrected author list
(100206) Rowland Hughes
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A curved Henon-Heiles system and its integrable perturbations
Creators: name: Ballesteros, Angel
name: Blasco, Alfonso
name: Herranz, Francisco J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The constant curvature analogue on the two-dimensional sphere and the hyperbolic space of the integrable Hénon-Heiles Hamiltonian $\mathcal{H}$ given by $$ \mathcal{H}=\dfrac{1}{2}(p_{1}^{2}+p_{2}^{2})+ Ω\left(q_{1}^{2}+ 4 q_{2}^{2}\right) +α\left(q_{1}^{2}q_{2}+2 q_{2}^{3}\right), $$ where $Ω$ and $α$ are real constants, is revisited. The resulting integrable curved Hamiltonian, $\mathcal{H}_κ$, depends on a parameter $κ$ which is just the curvature of the underlying space and allows one to recover $\mathcal{H}$ under the smooth flat/Euclidean limit $κ\to 0$. This system can be regarded as an integrable cubic perturbation of a specific curved $1:2$ anisotropic oscillator, which was already known in the literature. The Ramani-Dorizzi-Grammaticos (RDG) series of potentials associated to $\mathcal{H}_κ$ is fully constructed, and corresponds to the curved integrable analogues of homogeneous polynomial perturbations of $\mathcal{H}$ that are separable in parabolic coordinates. Integrable perturbations of $\mathcal{H}_κ$ are also fully presented, and they can be regarded as the curved counterpart of integrable rational perturbations of the Euclidean Hamiltonian $\mathcal{H}$. It will be explicitly shown that the latter perturbations can be understood as the "negative index" counterpart of the curved RDG series of potentials. Furthermore, it is shown that the integrability of the curved Hénon-Heiles Hamiltonian $\mathcal{H}_κ$ is preserved under the simultaneous addition of curved analogues of "positive" and "negative" families of RDG potentials.
description: 13 pages, 1 figure. Based on the contribution presented at "The 30th International Colloquium on Group Theoretical Methods in Physics", July 14-18, 2014, Ghent, Belgium. To appear in Journal of Physics: Conference Series
Collagen Telopeptides (Cross-Linking Sites) Play a Role in Collagen Gel Lattice Contraction
Creators: name: Mechanic, Gerald
name: Yamauchi, Mitsuo
name: Wynn, Kimberly
name: Briggaman, Robert
name: Woodley, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: Solubilized interstitial collagens will form a fibrillar, gel-like lattice when brought to physiologic conditions. In the presence of human dermal fibroblasts the collagen lattice will contract. The rate of contraction can be determined by computer-assisted planemetry. The mechanisms involved in contraction are as yet unknown. Using this system it was found that the rate of contraction was markedly decreased when collagen lacking telopeptides was substituted for native collagen. Histidinohydroxylysinonorleucine (HHL) is a major stable trifunctional collagen cross-link in mature skin that involves a carboxyl terminal, telopeptide site 16c, the sixteenth amino acid residue from the carboxy terminal of the telopeptide region of alpha 1 (I) in type I collagen. Little, if any, HHL was present in native, purified, reconstituted, soluble collagen fibrils from 1% acetic acid-extracted 2-year-old bovine skin. In contrast, HHL cross-links were present (0.22 moles of cross-link per mole of collagen) in lattices of the same collagen contracted by fibroblasts. However, rat tail tendon does not contain HHL cross-links, and collagen lattices made of rat tail tendon collagen are capable of contraction. This suggests that telopeptide sites, and not mature HHL cross-links per se, are essential for fibroblasts to contract collagen lattices. Beta-aminopropionitrile fumarate (BAPN), a potent lathyrogen that perturbs collagen cross-linking by inhibition of lysyl oxidase, also inhibited the rate of lattice cell contraction in lattices composed of native collagen. However, the concentrations of BAPN that were necessary to inhibit the contraction of collagen lattices also inhibited fibroblast growth suggestive of cellular toxicity. In accordance with other studies, we found no inhibition of the rate of lattice contraction when fibronectin-depleted serum was used. Electron microscopy of contracted gels revealed typical collagen fibers with a characteristic axial periodicity. The data provide evidence that collagen telopeptide sites play a role in collagen gel lattice contraction.
Uma visão da Internet das Coisas na Imprensa Nacional: O Jornal Observador
Creators: name: Conde, Ângelo Silva
Publisher: name: Internet Latent Corpus Journal
Year: 2019

description: Para a realização deste estudo de caso procedeu-se a um levantamento de artigos publicados no jornal Português “Observador” sobre a Internet das Coisas, de forma a aferir qual a tipologia de notícias sobre esta tecnologia que foram publicadas no referido jornal; quais as potencialidades e desafios da IdC patentes no corpus da investigação; e qual a relação entre as publicações e as principais linhas de investigação desta área de estudo. Dos 29 artigos obtidos foi possível constatar que 12 correspondiam a anúncios de novos produtos, seguindo-se o anúncio de novos projetos (9), reflexão em torno da tecnologia (6) e criação de novas empresas (2). Constatou-se ainda que os artigos publicados têm a temática alinhada com as principais linhas de investigação sobre a IdC, destacando-se um ligeiro enfoque nas casas inteligentes e nas cidades inteligentes.
description: Internet Latent Corpus Journal, Vol 8 No 1 (2018)
Epitope Mapping of the Laminin Molecule in Murine Skin Basement Membrane Zone: Demonstration of Spatial Differences in Ultrastructural Localization
Creators: name: Horiguchi, Yuji
name: Fine, Jo-David
name: Abrahamson, Dale
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: Results of studies performed to date with polyclonal anti-laminin antibodies have been conflicting as to the ultrastructural localization of this glycoprotein in skin basement membrane zone (BMZ). Whereas initial reports suggested its presence solely within the lamina lucida (LL), others have suggested that laminin is instead an exclusive component of the lamina densa (LD). In an attempt to more critically address this issue, we have examined both intact and partially separated (via 1M NaCl) murine skin BMZ by indirect immunoelectron microscopy via a two-step immunoperoxidase technique on unfixed cryopreserved tissue, utilizing nine well-characterized monoclonal antibodies with binding specificity for laminin. Localization of the sites of the epitopes recognized by these antibodies on isolated laminin molecules was previously determined by rotary shadowing and by biochemical analyses on enzymatic fragments of laminin. Whereas at least faint immunoreactants were detected in both regions with eight of nine antibodies, predominant staining was noted within the LL with three of eight and within (and even sparsely below) the LD in three of eight. One antibody bound solely to the LL; another bound equally within both regions. Although some overlap was noted, it appears that the epitope on the distal portion of the long arm of the laminin molecule resides primarily within the skin LD, whereas epitopes on more central portions of the short arms are present within the LL or within both LL and LD. The findings of stratification of laminin epitopes within skin BMZ supports a similar recent observation in mouse kidney and suggests that portions of the laminin molecule span both LD and LL, and that there may be a non-random spatial orientation for the laminin molecule within murine skin BMZ.
Some special features of Cayley algebras, and $G_2$, in low characteristics
Creators: name: Castillo-Ramirez, Alonso
name: Elduque, Alberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17A75

description: Some features of Cayley algebras (or algebras of octonions) and their Lie algebras of derivations over fields of low characteristic are presented. More specifically, over fields of characteristic $7$, explicit embeddings of any twisted form of the Witt algebra into the simple split Lie algebra of type $G_2$ are given. Over fields of characteristic $3$, even though the Lie algebra of derivations of a Cayley algebra is not simple, it is shown that still two Cayley algebras are isomorphic if and only if their Lie algebras of derivations are isomorphic. Finally, over fields of characteristic $2$, it is shown that the Lie algebra of derivations of any Cayley algebra is always isomorphic to the projective special linear Lie algebra of degree four. The twisted forms of this latter algebra are described too.
Breaking bad degeneracies with Love relations: Improving gravitational-wave measurements through universal relations
Creators: name: Xie, Yiqi
name: Chatterjee, Deep
name: Holder, Gilbert
name: Holz, Daniel E.
name: Perkins, Scott
name: Yagi, Kent
name: Yunes, Nicolás
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The distance-inclination degeneracy limits gravitational-wave parameter estimation of compact binary mergers. Although the degeneracy can be partially broken by including higher-order modes or precession, these effects are suppressed in binary neutron stars. In this work, we implement a new parametrization of the tidal effects in the binary neutron-star waveform, exploiting the binary Love relations, that breaks the distance-inclination degeneracy. The binary Love relations prescribe the tidal deformability of a neutron star as a function of its source-frame mass in an equation-of-state insensitive way and, thus, allows direct measurement of the redshift of the source. If the cosmological parameters are assumed to be known, the redshift can be converted to a luminosity distance, and the distance-inclination degeneracy can thus be broken. We implement this new approach, studying a range of binary neutron-star observing scenarios using Bayesian parameter estimation on synthetic data. In the era of the third-generation detectors, for observations with signal-to-noise ratios ranging from 6 to 167, we forecast up to an $\sim70\%$ decrease in the $90\%$ credible interval of the distance and inclination and up to an $\sim50\%$ decrease in that of the source-frame component masses. For edge-on systems, our approach can result in moderate ($\sim50\%$) improvement in the measurements of distance and inclination for binaries with a signal-to-noise ratio as low as 10. This prescription can be used to better infer the source-frame masses and, hence, refine population properties of neutron stars, such as their maximum mass, impacting nuclear astrophysics. When combined with the search for electromagnetic counterpart observations, the work presented here can be used to put improved bounds on the opening angle of jets from binary neutron-star mergers.
description: 19 pages, 13 figures, text and references updated, v2 matches version published in PRD
General solution of cyclic Leibniz rule
Creators: name: Kadoh, Daisuke
name: Ukita, Naoya
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the general solution of the cyclic Leibniz rule (CLR) which was recently proposed as a new approach to the lattice supersymmetry. Introducing some mathematical preliminaries related to the cyclic symmetry, we find the general solution of the 2-body CLR for the naive symmetric difference operator. The main theorems of this paper state that the general solution can be uniquely expressed as (A) a linear combination of the two fundamental solutions with cyclic invariant coefficients, and (B) a linear combination of the minimal solutions with complex coefficients. Moreover, an extension to the general difference operators is also discussed.
description: 33 pages, 6 figures