cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Distortion Matrix Framework for High-Resolution Passive Seismic 3-D Imaging: Application to the San Jacinto Fault Zone, California
Creators: name: Touma, Rita
name: Blondel, Thibaud
name: Derode, Arnaud
name: Campillo, Michel
name: Aubry, Alexandre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Reflection seismic imaging usually suffers from a loss of resolution and contrast because of the fluctuations of the wave velocities in the Earth's crust. In the literature, phase distortion issues are generally circumvented by means of a background wave velocity model. However, it requires a prior tomography of the wave velocity distribution in the medium, which is often not possible, especially in depth. In this paper, a matrix approach of seismic imaging is developed to retrieve a three-dimensional image of the subsoil, despite a rough knowledge of the background wave velocity. To do so, passive noise cross-correlations between geophones of a seismic array are investigated under a matrix formalism. More precisely, the detrimental effect of wave velocity fluctuations on imaging is overcome by introducing a novel mathematical object: The distortion matrix. This operator essentially connects any virtual source inside the medium with the distortion that a wavefront, emitted from that point, experiences due to heterogeneities. A time reversal analysis of the distortion matrix enables the estimation of the transmission matrix that links each real geophone at the surface and each virtual geophone in depth. Phase distortions can then be compensated for any point of the underground. Applied to seismic data recorded along the Clark branch of the San Jacinto fault zone, the present method is shown to provide an image of the fault until a depth of 4 km with a transverse resolution of 80 m. Strikingly, this resolution is almost one eighth below the diffraction limit imposed by the geophone array aperture. The heterogeneities of the subsoil play the role of a scattering lens and of a transverse wave guide which increase drastically the array aperture.
description: 24 pages, 12 figures
Born-Infeld equations
Creators: name: Chernitskii, Alexander A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Electronic version of Entry in Encyclopedia of Nonlinear Science.
description: 4 pages, Internet address for Encyclopedia of Nonlinear Science is http://www.routledge-ny.com/ref/nonlinearsci/
COMPARISON OF THE EFFECTS OF ALLOPURINOL AND NITRATE ON PHOTOSYNTHATE PARTITIONING IN YAM BEAN
COMPARAISON DES EFFETS DE L'ALLOPURINOL ET DU NITRATE SUR LA REPARTITION DES PHOTOSYNTHETATS CHEZ LE DOLIQUE TUBEREUX
Creators: name: Vaillant, Victor
name: Robin, Christophe
name: Zinsou, Claude
name: Vaillant, Victor
name: Robin, Christophe
name: Zinsou, Claude
Publisher: name: Unknown
Year: 1989
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Expérience de charge en 14C02
subject: nodosités
subject: Dolique tubéreux

description: The responses of yam bean (Pachyrhizus erosus) to an alteration of ureide metabolism was investigated by 14C02- labeling studies and analysis of photosynthate partitioning and utilization in nodules. Nodulated plants were treated with allopurinol or KN03 and then utilized in a pulse-chace experiment. Plants fertilized with 20 mM KN02 showed and increased amount of total 14C present in leaves relative to control plants and a decreased amount of 14C partitioned to the tubers and nodules. The large decline in nodule total radioactivity due to the 3-fold effect of nitrate on nodule weight, was accompanied by only a 36 % decline in specific radioactivity of nodules. In addition tuber weight per plant declined by 51 % whereas the tuber specific activity was unaffected. Contrary to nitrate, allopurinol treatment had few effects on the photosynthate allocation to nodules and tuber. Due to the inhibition of ureide synthesis; radioactivity in nodules increased as percentage of total plant label, in relation with sucrose and starch accumulation. These effects confirmed the carbohydrate-deprivation hypothesis as a main cause of the inhibition of tuberous legumes nodules by nitrate. ----- Nous avons étudié les réponses du Dolique tubéreux (Pachyrhizus erosus) à une altération du métabolisme des uréides par des expériences de marquage au 14C02 et d'analyse de la distribution et de l'utilisation des photosynthétats dans les nodosités. Des plantes nodulées ont été traitées avec de l'allopurinol ou du nitrate et ensuite utilisées dans des expériences de charge en 14C02 suivies de chasse. Les plantes ayant reçu du KN03 présentent au niveau des feuilles une augmentation du 14C par rapport à des plantes témoins et une diminution du 14C des nodosités et tubercules. La forte baisse de la radioactivité des nodosités due à une diminution d'un - facteur 3 de leur poids, n'est accompagnée que d'une diminution de 36 % de leur radioactivité spécifique. En outre le poids du tubercule diminue de moitié alors que sa radioactivité spécifique ne change pas. Contrairement au nitrate, l'allopurinol n'aque peu d'effets sur l'allocation de photosynthétats aux nodosités et tubercules. En raison de l'inhibition de la synthèse des uréides, la radioactivité augmente dans les nodosités en relation avec une accumulation de saccharose et d'amidon. Ces résultats nous confirment que l'inhibition par le nitrate de l'activité des nodosités d'une légumineuse tubérifère est due essentiellement au manque de photosynthétats.
THE ANATOMY OF THE ROOT SYSTEM IN YAM BEAN, PACHYRHIZUS EROSUS (L) URBAN (FABACEAE)
L'ANATOMIE DU SYSTEME RACINAIRE CHEZ LE DOLIQUETUBEREUX, PACHIRHIZUS EROSUS (L) URBAN (FABACEAE)
Creators: name: Dabydeen, S.
name: Sirju-Charran, G.
name: Dabydeen, S.
name: Sirju-Charran, G.
Publisher: name: Unknown
Year: 1989
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Investigations have revealed that the anatomy of the primary radicular root was typically dicotyledonous except that the metaxylem was not completely developed centripetally. Most of the roots had tetrarch xylem although a few pentarch conditions were observed. Tuberization was initiated by the formation of the vascular cambium which divided to form secondary tissues in a normal fashion. Later on, anomalous secondary and tertiary cambia developed around vessel elements and these produced mostly parenchyma storage cells. Activity of this anomalous secondary cambia thickening was chiefly responsible for the growth of the mature tuber. ----- Des études ont révélé que l'anatomie de la première racine radiculaire était du type dicotylédone excepté que le métaxylème n'était pas développé entièrement de façon centripète. La plupart des racines avaient un xylème tétrarche bien que quelques cas de pentarchie aient été observés. La tubérisation était initiée par la formation d'un cambium vasculaire qui se divise pourformerdes tissus secondaires normaux. Plus tard, des cambiums anormaux secondaires et tertiaires se développent autour des éléments des vaisseaux et produisent principalement des cellules de stockage du parenchyme. L'activité de cet épaississement des cambiums anormaux secondaires est responsable du grossissement du tubercule adulte.
Hinweise | Editorial
Creators: name: Schriftleitung, Verantwortliche
Publisher: name: Zeitschrift für christlich-jüdische Begegnung im Kontext
Year: 2021

description: Editorial »Die deutsche Erinnerungskultur erlebt gerade einen Umbruch«, schreibt die Kulturwissenschaftlerin und Gedächtnisforscherin Aleida Assmann im Jahr 2020. Neben dem bereits häufig thematisierten Forschungsfeld des Übergangs von der Zeitzeugen- Generation zur Adressaten-Generation zeigt sich Erinnerungskultur als ein mehrdimensionales Phänomen. Bedingt durch kulturelle und gesellschaftliche Transformationsprozesse ist die Erinnerungskultur im stetigen Wandel und muss als dynamisch aufgefasst werden. Dies umfasst auch, dass eine Pluralisierung der Ausgestaltungsmöglichkeiten von Erinnerungskultur stattfindet, insbesondere die digitalen Medien bieten dazu neue und vielversprechende Möglichkeiten. So können neben dem gemeinsamen Erinnern an Gedenktagen, Orten und Anlässen, welche vor allem von Präsenz und persönlicher Begegnung leben, nichtpräsenzbasierte und individuelle Formen von Erinnerungskultur gefördert werden. Die Nutzung digitaler Medien soll keine Revision oder Ablösung klassischer Erinnerungsformen bedeuten, stattdessen sollen diese an gezielten und sinnvollen Punkten ergänzt und bereichert werden.
description: Zeitschrift für christlich-jüdische Begegnung im Kontext, Nr. 01-02 (2020): Erinnerungskultur im Wandel
What's video got to do with it? : a community-university research partnership in Vancouver's Downtown Eastside
Creators: name: Vallillee, André David
Publisher: name: University of British Columbia
Year: 2011

description: This paper argues that collaborative video projects offer a new, innovative model for community-university research partnerships to inform community planning processes. We begin with a brief review of participatory planning theory in the broader planning theory field. The work of Ken Reardon in East St. Louis is then used to illustrate the emergence of community-university research partnerships as a conduit for increasing participation in community planning processes. Building on the successes of Reardon's work the paper moves on to explore the use of video in community-university research partnerships. Using the author's participation in a community-university research partnership in the form of a collaborative video project in Vancouver's Downtown Eastside, the paper sheds light on the opportunities and challenges collaborative video projects present in pursuit of a more inclusive, democratic planning process.
Impressum | Heftbezug | Abonnement
Creators: name: Schriftleitung, Verantwortliche
Publisher: name: Zeitschrift für christlich-jüdische Begegnung im Kontext
Year: 2021

description: Sehr geehrte Leserin , sehr geehrter Leser, vielen Dank für Ihr Interesse an unserer Zeitschrift für christlich-jüdische Begegnung im Kontext (ZfBeg). Eine PDF-Datei mit Bestellformularen finden Sie im dunkelroten Kasten.
description: Zeitschrift für christlich-jüdische Begegnung im Kontext, Nr. 03 (2020): Emmanuel Levinas. Ein epochaler Impulsgeber für Theologie, Philosophie und Kulturwissenschaften
Beyond Quantum Noise Spectroscopy: modelling and mitigating noise with quantum feature engineering
Creators: name: Youssry, Akram
name: Paz-Silva, Gerardo A.
name: Ferrie, Christopher
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ability to use quantum technology to achieve useful tasks, be they scientific or industry related, boils down to precise quantum control. In general it is difficult to assess a proposed solution due to the difficulties in characterising the quantum system or device. These arise because of the impossibility to characterise certain components in situ, and are exacerbated by noise induced by the environment and active controls. Here we present a general purpose characterisation and control solution making use of a novel deep learning framework composed of quantum features. We provide the framework, sample data sets, trained models, and their performance metrics. In addition, we demonstrate how the trained model can be used to extract conventional indicators, such as noise power spectra.
Frozen Futures: Exploring the potential of scenario planning techniques for thinking and talking about digital divides in Arctic contexts
Creators: Hackwell, Jennifer
Publisher: name: University of Alberta Library
Year: 2024

This capstone examines the use of scenario planning methodology as an alternative way for

thinking and talking about Arctic digital divides, specifically in a Canadian telecommunications

context. Despite an abundance of research into digital divides and decades of attempts to close

the gap, the divide persists. Exploratory in nature, this study uses a mixed-methods approach

combining content analysis methods within a future-focussed scenario planning framework.

Computer-assisted content analysis was conducted on publicly-available transcripts from a

CRTC hearing held in Whitehorse, Yukon, to create a dataset of trends and influences of key

importance from the hearing. This dataset of “driving forces” was then run through a scenario

planning exercise to see if anything can be deduced about the value of the methodology in the

context of Arctic digital divides. Results identified that scenario planning was particularly adept

at handling a range of complex ideas and uncertainty in a systematic way. However, blind spots

were identified based on participants’ own experiences and biases. This led to the

recommendation that scenario planning should not be used in isolation, but that it could provide

value as a secondary resource in decision making and policy guidance. This study walks the line

between traditional and creative research approaches, highlighting the underestimated value of

participants’ lived realities, interpretations, and imaginations in problem solving complex issues.
Power law load dependence of atomic friction
Creators: name: Fusco, C.
name: Fasolino, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a theoretical study of the dynamics of a tip scanning a graphite surface as a function of the applied load. From the analysis of the lateral forces, we extract the friction force and the corrugation of the effective tip-surface interaction potential. We find both the friction force and potential amplitude to have a power law dependence on applied load with exponent $\sim 1.6$. We interpret these results as characteristic of sharp undeformable tips in contrast to the case of macroscopic and elastic microscopic contacts.
description: 4 pages, 4 figures
title: 'The Time that Used to Go': A Psychosocial Study of the Care Relationship in Residential Care Homes for People with Dementia
Creators: name: Ramsay-Jones, Esther
Publisher: name: The Open University
Year: 2018

description: This thesis aims to explore the relational field in dementia care by focusing on the particularity of experiences between carers and residents in two dementia care homes, while also keeping in view the social context of such experiences. Drawing on psychoanalytical ideas, the study examines in detail the dynamic psychic processes which took place between the people who lived and worked in both care settings, as well as noting the ways in which they came to inform the organisational culture of each site which was simultaneously constitutive of the relational field and also constituted by it. Using research methods influenced by psychosocial ideas, data was gathered through two psychoanalytically informed observations of the care settings, a series of loosely structured interviews with staff and residents and notes from a personal research diary. There is a discussion of Living Well: A National Dementia Strategy, which focuses on the appropriateness of the ‘living well’ discourse for people in advanced stages of dementia, in which the experience of decline, dependency and death is present.
Quantum random access memory via quantum walk
Creators: name: Asaka, Ryo
name: Sakai, Kazumitsu
name: Yahagi, Ryoko
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A novel concept of quantum random access memory (qRAM) employing a quantum walk is provided. Our qRAM relies on a bucket brigade scheme to access the memory cells. Introducing a bucket with chirality left and right as a quantum walker, and considering its quantum motion on a full binary tree, we can efficiently deliver the bucket to the designated memory cells, and fill the bucket with the desired information in the form of quantum superposition states. Our procedure has several advantages. First, we do not need to place any quantum devices at the nodes of the binary tree, and hence in our qRAM architecture, the cost to maintain the coherence can be significantly reduced. Second, our scheme is fully parallelized. Consequently, only O(n) steps are required to access and retrieve O(2n) data in the form of quantum superposition states. Finally, the simplicity of our procedure may allow the design of qRAM with simpler structures.
description: 13 pages
Estimates for the strong approximation in multidimensional central limit theorem
Creators: name: Zaitsev, A. Yu.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F05, 60F15, 60F17

description: In a recent paper the author obtained optimal bounds for the strong Gaussian approximation of sums of independent $\R^d$-valued random vectors with finite exponential moments. The results may be considered as generalizations of well-known results of Komlós--Major--Tusnády and Sakhanenko. The dependence of constants on the dimension $d$ and on distributions of summands is given explicitly. Some related problems are discussed.
Systematic Evaluation and Usability Analysis of Formal Tools for System Design (additional material)
Creators: name: , Alessio
Publisher: name: Zenodo
Year: 2020
Subjects: formal methods, software engineering, system design, railway, empirical software engineering, empirical formal methods

description: This package includes additional data for the paper ``Systematic Evaluation and Usability Analysis of Formal Tools for System Design''. The paper concerns the systematic evaluation and usability analysis of 14 formal tools for system design, namely CADP (2020-g), FDR4(4.2.7), NuSMV(1.1.1), ProB(1.9.3), Atelier B (4.5.1), Simulink (R2020a), SPIN (6.4.9), UMC (4.8), UPPAAL (4.1.4), SCADE (6), mCLR2 (202006.0), SAL (3.3), TLA+ (2) and CPN Tools (4.0). The current package includes the following content: Tool Evaluation.pdf: a document including the reference evaluation template, and the evaluation sheet of each tool. Tool Evaluation Table.pdf: a table summarizing the results of the evaluation. Tool Evaluation Table.xlsx: the table in Excel format. System Usability Test - SUS Results.xlsx: an excel file with multiple sheets with all the raw results of the usability test for the tools. Preprint.pdf: the preprint of the paper associated with this package.
COMPARAISON DE LA PRODUCTION DE POMME DE TERRE (Solanum tuberosum) SELON L'ORIGINE DES TUBERCULES (GUADELOUPE OU FRANCE) LEUR MODE ET DUREE DE CONSERVATION
COMPARISON OF IRISH POTATO YIELD (Solanum tuberosum) ACCORDING TO ORIGIN (GUADELOUPE OR FRANCE) MODE AND LENGTH OF CONSERVATION OF THE PLANTING SETS
Creators: name: Mathurin, P.
name: Rousselle, P.
name: Leberre, J.
name: Elliseche, D.
name: Mathurin, P.
name: Rousselle, P.
name: Leberre, J.
name: Elliseche, D.
Publisher: name: Unknown
Year: 1989
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Pomme de terre
subject: tubercule
subject: température
subject: conservation
subject: âge physiologique
subject: vigueur
subject: production

description: La production de pomme de terre issues de tubercules semences conservés 6,7,8 et 9 mois en chambre froide (7°), puis mis au terrain en basse altitude dans les conditions de la Guadeloupe, a été comparée à celle des tubercules importés nouvellement récoltés et conservés à température ambiante. Les meilleures productions sont enregistrées avec les plants de tubercules conservés. Un léger effet dépressif de la conservation n'apparait qu'à partir de 9 mois Dans la perspective d'une plantation, il ressort que les tubercules sains récoltés en Février dans nos conditions peuvent être plantés la saison de culture suivante avec une sécurité de production satisfaisante. ----- Yiel of Irish Potatofrom planting sets kept 6,7,8 and 9 months in cold storage (7° C) compared with that of imported sets freshly harvested and kept at room temperature. Best yields are obtained with stored sets. Slight depressive effect of storage is noticeable only after 9 months... Regarding production it results that healthy tubers harvested in February in Guadeloupe can be stored for planting at the following season with a good prospect
Minimal surface representations of virtual knots and links
Creators: name: Dye, H. A.
name: Kauffman, Louis H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57M25, 57M27, 57N05

description: Kuperberg [Algebr. Geom. Topol. 3 (2003) 587-591] has shown that a virtual knot corresponds (up to generalized Reidemeister moves) to a unique embedding in a thichened surface of minimal genus. If a virtual knot diagram is equivalent to a classical knot diagram then this minimal surface is a sphere. Using this result and a generalised bracket polynomial, we develop methods that may determine whether a virtual knot diagram is non-classical (and hence non-trivial). As examples we show that, except for special cases, link diagrams with a single virtualization and link diagrams with a single virtual crossing are non-classical.
description: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol5/agt-5-22.abs.html Version 5: a minor correction and a citation added
The evolution of a civilian power : the ESDP and the 'civilianisation' of security
Creators: name: Aceti, Julia Rose
Publisher: name: University of British Columbia
Year: 2011

description: Departing from the 'civilian power Europe' debate, my thesis explores the development of the European Security and Defence Policy and considers the emergence of a new international identity for the European Union. Though the recent development of military capabilities seems to have ended the EU's tradition as a 'civilian power,' the ESDP actually functions as an expression of civilian power by providing the EU with an additional policy tool in its developing role as a comprehensive security actor. Though the Union has ultimately evolved beyond its civilian presence, the EU's new global role is informed by its civilian origins. First, I provide an outline of the civilian power Europe debate and consider how civilian power qualities have shaped current EU external activity. Next, I discuss the development of the ESDP and review its unique characteristics. Finally, I explore the idea of comprehensive security and highlight its impact on the burgeoning security culture of the EU. I reinforce the distinct features of the ESDP by considering a variety of EU operations in two locations: Bosnia and Herzegovina and the Democratic Republic of Congo. Rather than representing a regression into power politics, the ESDP is a unique expression of military might that maintains as its ultimate goal the reduction of violent conflict worldwide.
Topological quantum control: Edge currents via Floquet depinning of skyrmions in the $ν= 0$ graphene quantum Hall antiferromagnet
Creators: name: Iyer, Deepak
name: Foster, Matthew S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a defect-to-edge topological quantum quench protocol that can efficiently inject electric charge from defect-core states into a chiral edge current of an induced Chern insulator. The initial state of the system is assumed to be a Mott insulator, with electrons bound to topological defects that are pinned by disorder. We show that a "critical quench" to a Chern insulator mass of order the Mott gap shunts charge from defects to the edge, while a second stronger quench can trap it there and boost the edge velocity, creating a controllable current. We apply this idea to a skyrmion charge in the $ν= 0$ quantum Hall antiferromagnet in graphene, where the quench into the Chern insulator could be accomplished via Floquet driving with circularly polarized light.
description: 6 pages including refs, 4 figures
QUELQUES PROBLEMES CONCERNANT LA FLORAISON DE L'IGNAME
SOME PROBLEMS CONCERNING THE FLOWERING OF YAM
Creators: name: Faderin, B.
name: Degras, L.
name: Faderin, B.
name: Degras, L.
Publisher: name: Unknown
Year: 1989
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: La floraison des ignames est très complexe. De plus, le sexe-ratio est déséquilibré avec une prédominance mâle. Le comportement floral de trois clones issus d'une population hybride et un clone local de Dioscorea cayenensis - rotundata a été étudié en appliquant trois substances de croissance. Ces substances GA3, CCC et ETHREL ont été appliquées par pulvérisation aérienne, 30 jours après la levée. Une différence de potentialité de floraison entre les clones mâles et femelles a été mise en évidence. Le GA3 semble influencer la floraison des deux sexes mais les doses optimales restent à déterminer. On devrait s'interroger sur les différences génétiques et/ou enzymatiques entre les deux sexes. ----- The flowering of yams is complex. Moreover, the sex-ratio is unbalanced with a preponderance of staminate flowers over pistillate flowers. The flowering behavior of three clones issued from a hybrid population and a local clone of Dioscorea cayenensis-rotundata was studied, using three growth substances. These growth substances : GA3, CCC and ETHREL were sprayed on the aerial parts of plants, 30 days after sprouting. A difference in the flowering potentiality between sex was illustrated. GA3 seems to influence the flowering of both sex but the optimal dose of application remains to be determined. One should enquire on the genetic and/or the enzymatic différencies between the two sexes.
Additional file 3 of The effectiveness and complexity of interventions targeting sedentary behaviour across the lifespan: a systematic review and meta-analysis
Creators: name: Blackburn, Nicole E.
name: Wilson, Jason J.
name: McMullan, Ilona I.
name: Caserotti, Paolo
name: Giné-Garriga, Maria
name: Wirth, Katharina
name: Coll-Planas, Laura
name: Alias, Sergi Blancafort
name: Roqué, Marta
name: Deidda, Manuela
name: Kunzmann, Andrew T.
name: Dhayana Dallmeier
name: Tully, Mark A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 3: Supplement C. Risk of Bias
The constraints as evolution equations for numerical relativity
Creators: name: Gentle, Adrian P.
name: George, Nathan D.
name: Kheyfets, Arkady
name: Miller, Warner A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Einstein equations have proven surprisingly difficult to solve numerically. A standard diagnostic of the problems which plague the field is the failure of computational schemes to satisfy the constraints, which are known to be mathematically conserved by the evolution equations. We describe a new approach to rewriting the constraints as first-order evolution equations, thereby guaranteeing that they are satisfied to a chosen accuracy by any discretization scheme. This introduces a set of four subsidiary constraints which are far simpler than the standard constraint equations, and which should be more easily conserved in computational applications. We explore the manner in which the momentum constraints are already incorporated in several existing formulations of the Einstein equations, and demonstrate the ease with which our new constraint-conserving approach can be incorporated into these schemes.
description: 10 pages, updated to match published version
Local Inhomogeneity in Asymmetric Simple Exclusion Processes with Extended Objects
Creators: name: Shaw, Leah B.
name: Kolomeisky, Anatoly B.
name: Lee, Kelvin H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Totally asymmetric simple exclusion processes (TASEP) with particles which occupy more than one lattice site and with a local inhomogeneity far away from the boundaries are investigated. These non-equilibrium processes are relevant for the understanding of many biological and chemical phenomena. The steady-state phase diagrams, currents, and bulk densities are calculated using a simple approximate theory and extensive Monte Carlo computer simulations. It is found that the phase diagram for TASEP with a local inhomogeneity is qualitatively similar to homogeneous models, although the phase boundaries are significantly shifted. The complex dynamics is discussed in terms of domain-wall theory for driven lattice systems.
description: 11 pages, 5 figures
Erinnern 2.0. Digitales Gedenken an die Schoah
Creators: name: Münch-Wirtz, Julia
Publisher: name: Zeitschrift für christlich-jüdische Begegnung im Kontext
Year: 2021

description: In Zeiten der Digitalisierung, in denen sich unsere Kommunikation und die sozialen Interaktionen in vielen Bereichen nachhaltig verändert haben und sich besonders junge Erwachsene als digital natives ganz selbstverständlich in diesem Gefüge bewegen, drängt die Frage, wie die Geschehnisse der Schoah unter diesen veränderten medialen Bedingungen in Erinnerung gehalten werden können und trotz der digitalen Beschleunigung, die eher ein Vergessen als ein Erinnern befürchten lässt, die Schoah ein wesentlicher Bestandteil unseres Gedächtnisses bleibt. In diesem Zusammenhang ist an Johann Baptist Metz’ Begriff der anamnetischen Kultur zu denken, denn für ihn bleibt das »Eingedenken fremden Leids (...) eine fragile Kategorie einer Zeit, in der sich Menschen am Ende nur noch mit der Waffe des Vergessens, mit dem Schild der Amnesie gegen die immer neu hereinstürzenden Leidensgeschichten und Untaten wappnen zu können, meinen: Gestern Auschwitz, heute Bosnien und Ruanda und morgen?«
description: Zeitschrift für christlich-jüdische Begegnung im Kontext, Nr. 01-02 (2020): Erinnerungskultur im Wandel
Galactic Center constraints on self-interacting sterile neutrinos from fermionic dark matter ("ino") models
Creators: name: Yunis, R.
name: Argüelles, C. R.
name: Mavromatos, N. E.
name: Moliné, Á.
name: Krut, A.
name: Carinci, M.
name: Rueda, J. A.
name: Ruffini, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The neutrino minimal standard model ($ν$MSM) has been tightly constrained in the recent years, either from dark matter (DM) production or from X-ray and small-scale observations. However, current bounds on sterile neutrino DM can be significantly modified when considering a $ν$MSM extension, in which the DM candidates interact via a massive (axial) vector field. In particular, standard production mechanisms in the early Universe can be affected through the decay of such a massive mediator. We perform an indirect detection analysis to study how the $ν$MSM parameter-space constraints are affected by said interactions. We compute the X-ray fluxes considering a DM profile that self-consistently accounts for the particle physics model by using an updated version of the Ruffini-Argüelles-Rueda (RAR) fermionic ("ino") model, instead of phenomenological profiles such as the Navarro-Frenk-White (NFW) distribution. We show that the RAR profile accounting for interacting DM, is compatible with measurements of the Galaxy rotation curve and constraints on the DM self-interacting cross section from the Bullet cluster. A new analysis of the X-ray NuSTAR data in the central parsec of the Milky Way, is here performed to derive constraints on the self-interacting sterile neutrino parameter-space. Such constraints are stronger than those obtained with commonly used DM profiles, due to the dense DM core characteristic of the RAR profiles.
description: 24 pages, 10 figures, 2 tables, published in in Physics of the Dark Universe. arXiv admin note: substantial text overlap with arXiv:1810.05756
PRELIMINARY INVESTIGATIONS ON INDIGENOUS STRAINS OF RHIZOBIUM NODULATING YAM BEAN (Pachyrhizus erosus Urban) IN GUADELOUPE
RESULTATS PRELIMINAIRES SUR LA SELECTION ET LA CARACTERISATION DES SOUCHES DE Rhizobium INDIGENES NODULANT LE DOLIQUE TUBEREUX (Pachyrhizus erosus Urban ) EN GUADELOUPE
Creators: name: Vansuyt, G.
name: Zinsou, C.
name: Vansuyt, G.
name: Zinsou, C.
Publisher: name: Unknown
Year: 1989
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Yam bean plants formed efficient nodules with indigenous strains of Rhizobium living in vertisols (pH 8.4), in neutral ferralitic soils (pH 6.9) but not in.acid ferrallitic soils (pH 4.6). Mineral amendments imploying Urea, basic slag, lime incorporation in the acid soils overcome the pH inhibition of nodule formation. Rhizobium strains from the different soils were isolated and characterized. Apparent rate of growth (ARG) and rate of nodulation in gibson tubes (RNG) were determined. Their aptitude to use sugars and other compounds was assessed by API STAPH tests. The efficiency of the symbiosis of each strain of Rhizobium-Pachyrhizus was measured by estimating the biomass produced in gibson tubes and by determining carbohydrates, ureides and amino-compounds in the nodules of the plant. ----- Le dolique tubéreux forme des nodosités efficientes avec des souches de Rhizobium indigènes des vertisols (pH 8) et des sols ferralitiques neutres (pH 6.9). La nodulation est inexistante dans les sols ferralitiques acides (pH 4.6). L'incorporation des amendements minéraux (urée, scories de déphosphoration, chaux) capables d'élever le pH permet de lever l'inhibition de la formation des nodosités dans ces derniers sols. Les souches de Rhizobiumont été sélectionnées et caractérisées. Les vitesses de croissance apparente et de nodulation en tubes Gibson ont été déterminées. Leur aptitude à utiliser les sucres et d'autres composés ont été mis en évidence par les tests API STAPH. L'efficience de chaque souche a été estimée par la matière organique produite en tubes Gibson, les quantités de sucres solubles, d'uréides, et composés aminés des nodosités.
Inaccessible entanglement in symmetry protected topological phases
Creators: name: de Groot, Caroline
name: Stephen, David T.
name: Molnar, Andras
name: Schuch, Norbert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the entanglement structure of symmetry-protected topological (SPT) phases from an operational point of view by considering entanglement distillation in the presence of symmetries. We demonstrate that non-trivial SPT phases in one-dimension necessarily contain some entanglement which is inaccessible if the symmetry is enforced. More precisely, we consider the setting of local operations and classical communication (LOCC) where the local operations commute with a global onsite symmetry group $G$, which we call $G$-LOCC, and we define the inaccessible entanglement $E_{inacc}$ as the entanglement that cannot be used for distillation under $G$-LOCC. We derive a tight bound on $E_{inacc}$ which demonstrates a direct relation between inaccessible entanglement and the SPT phase, namely $\log(D_ω^2) \leq E_{inacc} \leq \log(|G|)$, where $D_ω$ is the topologically protected edge mode degeneracy of the SPT phase $ω$ with symmetry $G$. For particular phases such as the Haldane phase, $D_ω= \sqrt{|G|}$ so the bound becomes an equality. We numerically investigate the distribution of states throughout the bound, and show that typically the region near the upper bound is highly populated, and also determine the nature of those states lying on the upper and lower bounds. We then discuss the relation of $E_{inacc}$ to string order parameters, and also the extent to which it can be used to distinguish different SPT phases of matter.
description: 16 pages, 7 figures
Additional file 1 of The effect of probiotics supplementation on blood pressure: a systemic review and meta-analysis
Creators: name: Qi, Dan
name: Nie, Xiao-Lu
name: Zhang, Jian-Jun
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy

description: Additional file 1:.
Diaeretus leucopterus
Creators: name: Akhtar, Mir Samim
name: Dey, Debjani
name: Usmani, Mohd. Kamil
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Diaeretus
Diaeretus leucopterus

description: 57. Diaeretus leucopterus (Haliday)
 Aphidius leucopterus Haliday, 1834: 103.
 Aphidius exspectatus Gautier and Bonnamour, 1936: 74.
 Host. Eulachnus thunbergii Wilson on Pinus sp. (Stary and Ghosh 1975).
 Distribution. Meghalaya (Stary and Ghosh 1975).
description: Published as part of Akhtar, Mir Samim, Dey, Debjani & Usmani, Mohd. Kamil, 2011, A catalogue of aphid parasitoids (Hymenoptera: Braconidae: Aphidiinae) from India, pp. 1-31 in Insecta Mundi 2011 (151) on page 11, DOI: 10.5281/zenodo.4531563
COMPORTEMENT DE QUELQUES VARIETES DE POMME DE TERRE (Solanum tuberosum) INTRODUITES ET CULTIVEES EN BASSE ALTITUDE DANS LES CONDITIONS ECOLOGIQUES DE LA GUADELOUPE
BEHAVIOUR OF IRISH POTATO VARIETIES (Solanum tuberosoum) INTRODUCED AND GROWN IN LOW ALTITUDE IN DIFFERENT ECOLOGIES IN GUADELOUPE
Creators: name: Mathurin, P.
name: Rouselle, P.
name: Leberre, J.
name: Elliseche, D.
name: Mathurin, P.
name: Rouselle, P.
name: Leberre, J.
name: Elliseche, D.
Publisher: name: Unknown
Year: 1989
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Pomme de terre
subject: Solanum tuberosum
subject: Variétés
subject: Adaptation
subject: Basse altitude
subject: Guadeloupe

description: En 1987, à partir de tubercules de 15 variétés de pomme de terre et de 13 en 1988, nous avons réalisé des essais multilocaux en 2 localités : - Basse-Terre où le sol est ferralitique argileux avec présence de Pseudomonas solanacearum - Grande-Terre où le sol est un vertisol calcaire avec absence de Pseudomonas solanacearum Dès 1987-88, nous avons retenu 8 variétés présentant des traits intéressants du point de vue de la qualité, de la production de tubercules et des tendances significativement bonnes contre les agressions parasitaires. Dans nos essais de confirmation en 1988-89, ces variétés se sont avérées acceptables avec une dominance pour Korrigane - Spunta - Désirée et Kennebec qui sont les variétés retenues pour leurs capacités d'adaptation aux différents terrains et à nos conditions climatiques de plaine. ----- In 1987 with 15 varieties, and 1988 with 13 varieties we have realized trials in two localities : - Basse-Terre : on ferralitic clay-soils with presence of Pseudomonas solanacearum - Grande-Terre : on calcareous vertisols in absence of Pseudomonas solanacearum From 1987-1988 we have noticed 8 varieties with interesting characteristics for quality, yield and reactions to parasitism. This was confirmed in 1988- 1989 with outstanding traits for Korrigane, Spunta, Désirée and Kennebec which are the varieties retained for their adaptation to different soils in our low altitude growing conditions.
Stability and bifurcations in averaged models of dynamics
Creators: name: Sheng, Mickey
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Averaging over fast phases reduces study of stability of quasi-periodic and periodic trajectories to study of stability of periodic trajectories and equilibria. The aim of the proposed research is to study stability properties in several averaged models of dynamics. Bifurcation analysis is the central tool in study of such properties. The first and second models that we study are the simple and the spherical pendulums {with vibrating suspension points}. We give a complete description of bifurcations of their phase portraits. Main part of the research is devoted to the restricted elliptic three body problem (ER3BP). This model with large eccentricities of the planet is of particular interest in relation to study of motion of exoplanets.
Wick Quantization of Cotangent Bundles over Riemannian Manifolds
Creators: name: Gorbunov, I. V.
name: Lyakhovich, S. L.
name: Sharapov, A. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A simple geometric procedure is proposed for constructing Wick symbols on cotangent bundles to Riemannian manifolds. The main ingredient of the construction is a method of endowing the cotangent bundle with a formal Kähler structure. The formality means that the metric is lifted from the Riemannian manifold $Q$ to its phase space $T^\ast Q$ in the form of formal power series in momenta with the coefficients being tensor fields on the base. The corresponding Kähler two-form on the total space of $T^\ast Q$ coincides with the canonical symplectic form, while the canonical projection of the Kähler metric on the base manifold reproduces the original metric. Some examples are considered, including constant curvature space and nonlinear sigma models, illustrating the general construction.
description: 18 pages, LaTex2e, replaced by journal version, misprints removed
Additional file 2 of The effectiveness and complexity of interventions targeting sedentary behaviour across the lifespan: a systematic review and meta-analysis
Creators: name: Blackburn, Nicole E.
name: Wilson, Jason J.
name: McMullan, Ilona I.
name: Caserotti, Paolo
name: Giné-Garriga, Maria
name: Wirth, Katharina
name: Coll-Planas, Laura
name: Alias, Sergi Blancafort
name: Roqué, Marta
name: Deidda, Manuela
name: Kunzmann, Andrew T.
name: Dhayana Dallmeier
name: Tully, Mark A.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2: Supplement B. Characteristics of Included Studies
Rezension zu: von Lüpke, Johannes (2020): Wahrheit im Dialog. Biblisch-theologische Impulse für das interreligiöse Gespräch, Stuttgart: Calwer Verlag, 64 Seiten.
Creators: name: Schwendemann, Wilhelm
Publisher: name: Zeitschrift für christlich-jüdische Begegnung im Kontext
Year: 2021

description: Der emeritierte Professor für Systematische Theologie (KiHo Wuppertal/Bethel) spürt mit seinem brillanten Büchlein einer gelingenden Kommunikation im interreligiösen Dialog nach. In acht Kapiteln wird das Thema entfaltet. Wahrheit in Bruchstücken (S. 4 –10) geht von einem Gleichnis des Sufi-Meisters Al-Rumi aus, dass die Wahrheit allein Gott gehöre und Menschen nur Bruchstücke der Wahrheit in Händen halten. Wahrheit wird im Sufi-Gleichnismit einem Spiegel verglichen – der Spiegel ist nicht die Sache selbst. (S. 5) Gottes Selbsterkenntnis sei vollkommene Gotteserkenntnis; menschliche Selbsterkenntnis bleibe dem gegenüber relativ und fragmentarisch, weil seine Erkenntnis auf Offenbarung der Gottheit und auf deren Vermittlung beruhe. (S. 6) Das Problem sei die Verwechslung von relativer und absoluter Gotteserkenntnis, was zu einer Art menschlicher Selbstüberschätzung führe.
description: Zeitschrift für christlich-jüdische Begegnung im Kontext, Nr. 03 (2020): Emmanuel Levinas. Ein epochaler Impulsgeber für Theologie, Philosophie und Kulturwissenschaften
HDD-Net: Hybrid Detector Descriptor with Mutual Interactive Learning
Creators: name: Barroso-Laguna, Axel
name: Verdie, Yannick
name: Busam, Benjamin
name: Mikolajczyk, Krystian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Local feature extraction remains an active research area due to the advances in fields such as SLAM, 3D reconstructions, or AR applications. The success in these applications relies on the performance of the feature detector and descriptor. While the detector-descriptor interaction of most methods is based on unifying in single network detections and descriptors, we propose a method that treats both extractions independently and focuses on their interaction in the learning process rather than by parameter sharing. We formulate the classical hard-mining triplet loss as a new detector optimisation term to refine candidate positions based on the descriptor map. We propose a dense descriptor that uses a multi-scale approach and a hybrid combination of hand-crafted and learned features to obtain rotation and scale robustness by design. We evaluate our method extensively on different benchmarks and show improvements over the state of the art in terms of image matching on HPatches and 3D reconstruction quality while keeping on par on camera localisation tasks.
A framework for strategic decision-making in junior and intermediate oil and gas operating companies
Creators: name: Ohaegbu, Paul
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 129999 Built Environment and Design not elsewhere classified
subject: FOS: Civil engineering

description: Understanding the rationale behind the spate of strategic decisions being undertaken by oil and gas operating company (OGOC) executives in Alberta, Canada, as a consequence of the petroleum industry’s challenges associated with low commodity prices, presented a unique research opportunity. A framework for strategic decision-making and the competencies or skills required for making such decisions are critically important.
Empirical data was gathered from case study and industry survey as well as follow-up interviews. Some of the key findings were: 1) it is imperative to continually check to confirm that the strategic decision issues remain valid throughout the process and especially during the strategic decision issue framing and implementation phases; 2) periodic benchmarking of the OGOC’s key performance indicators against peers is necessary for sustainability; 3) capturing lessons learnt (knowledge management) and reapplying those lessons learnt throughout the strategic decision-making and implementation stages are very important for an effective strategy and strategic integrity; 4) the strategic decision priorities for the specific strategic decision issue or problem should be central in the strategic decision-making process; 5) Junior and Intermediate OGOCs should continually take cognizance of the cyclic nature of the oil and gas industry and examine several scenarios while maintaining capital discipline for sustainable growth, whether in a down- or up-cycle; and 6) sustainability of the organisation is paramount irrespective of the life cycle time frame consideration of the business or organisation’s principals. Ultimately, a framework, implementation guide, and skills required for strategic decision-making in Junior and Intermediate OGOCs were proffered and validated.