cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gestion du risque et information des consommateurs : l'exemple du méthyle-mercure dans le poisson
Creators: name: Blanchemanche, Sandrine
name: Marette, Stephan
name: Roosen, Jutta
name: Verger, Philippe
name: Blanchemanche, Sandrine
name: Marette, Stephan
name: Roosen, Jutta
name: Verger, Philippe
Publisher: name: Unknown
Year: 2007
Subjects: Food Consumption/Nutrition/Food Safety

description: De plus en plus fréquemment, l'information des consommateurs est utilisée comme un outil de gestion des risques sanitaires, par le biais de l'étiquetage, de programmes de prévention ou de recommandations de consommation. Nous nous sommes particulièrement intéressés à ce dernier outil utilisé au niveau international pour la gestion du risque lié à la présence de méthyle-mercure dans le poisson. Dans ce cas, une recommandation vise à modifier les comportements de consommation afin de diminuer la consommation d'espèces contaminées en méthyle-mercure, tout en garantissant des apports suffisants en acide gras oméga-3 par la consommation d'autres espèces. Ce document montre, via une méthode expérimentale "de terrain", l'efficacité limitée d'une telle recommandation.
Local density of states of a d-wave superconductor with inhomogeneous antiferromagnetic correlations
Creators: name: Atkinson, W. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The tunneling spectrum of an inhomogeneously doped extended Hubbard model is calculated at the mean field level. Self-consistent solutions admit both superconducting and antiferromagnetic order, which coexist inhomogeneously because of spatial randomness in the doping. The calculations find that, as a function of doping, there is a continuous cross over from a disordered ``pinned smectic'' state to a relatively homogeneous d-wave state with pockets of antiferromagnetic order. The density of states has a robust d-wave gap, and increasing antiferromagnetic correlations lead to a suppression of the coherence peaks. The spectra of isolated nanoscale antiferromagnetic domains are studied in detail, and are found to be very different from those of macroscopic antiferromagnets. Although no single set of model parameters reproduces all details of the experimental spectrum in BSCCO, many features, notably the collapse of the coherence peaks and the occurence of a low-energy shoulder in the local spectrum, occur naturally in these calculations.
description: 9 pages, 5 figures
title: Labour law for the worker? An examination of the effectiveness of post-war and contemporary labour law in protecting hospitality workers
Creators: name: Forde, Catherine
Publisher: name: University of Glasgow
Year: 2021
Subjects: subject: Labour law, employment rights, post-war and contemporary, hospitality, zero-hours contracts, worker experiences.

description: This thesis examines and compares the protection afforded to hospitality workers by labour law in the years following the Second World War and today. The primary issue addressed throughout the thesis is the effectiveness of labour law in these two time periods in providing hospitality workers with decent terms and conditions of employment. When compared to other industries and sectors, work in hospitality has traditionally been unstable and unpredictable, due in part to fluctuating demand across working weeks and seasons, and reliance on customers for tips. Today, the high prevalence of precarious employment relationships, such as zero-hours contracts, compound these problems, placing many workers in a vulnerable position and making it especially difficult for them to access and enforce employment rights. The investigation of the effectiveness of labour law proceeds in four stages. First, the general organisation of labour law in the two periods is discussed. Second, the legal implications of work on a zero-hours contract, as well as some wider implications for workers, are examined. Third, labour law specifically relating to hospitality workers in the two periods is examined, as well as the way in which the nature of work in hospitality can exacerbate precarious employment. Finally, there is an examination of data and literature relating to employer non- compliance with employment law in the two periods. The thesis concludes that the catering wages boards that existed in the post-war years provided hospitality workers with a more effective model for ensuring employer compliance with employment law, and worker involvement in setting terms and conditions of employment. It is suggested that for labour law today to effectively provide hospitality workers with decent terms and conditions of employment, a similar model to the wages boards could be adopted.
title: Generating stable demers Cartograms and Iso-Hexagon cartograms
Creators: name: Nickel, Soeren
Publisher: name: TU Wien
Year: 2019
Subjects: subject: Graph Drawing
subject: Geovisualisierung
subject: Algorithm Engineering
subject: Graph Drawing
subject: Geovisualisierung
subject: Algorithm Engineering

description: In dieser Arbeit behandeln wir das Thema der automatischen Generierung von stabilen Demers Kartogrammen und Iso-Hexagon Kartogrammen. Ein Demers Kartogramm/Iso-Hexagon Kartogramm ist eine Repräsentation von Daten auf einer Karte, in welcher alle Länder als Quadrate/reguläre Sechsecke dargestellt werden und die assoziierten Daten eines Landes die Größe diese Quadrats/regulären Sechsecks bestimmen. Diese Art von Kartogrammen ist beliebt um Unterschiede zwischen der Größe eines Landes und anderen georeferenzierten Daten aufzuzeigen, sowie um die Veränderung in diesen Daten über einen gewissen Zeitraum hinweg zu visualisieren. In diesen Serien von Kartogrammen, aber auch in einem Kartogramm generell, ist es von größter Wichtigkeit das mentale Modell des Betrachters so wenig wie möglich zu stören. Um dies zu erreichen, versuchen wir stabile Demers Kartogramme und Iso-Hexagon Kartogramme zu erstellen, die gewissen Quaitätskriterien---wie zum Beispiel benachbarte Regionen, wenn möglich, benachbart zu halten---entsprechen. Wir präsentieren darüber hinaus NP-Hardness Beweise für einige generalisierte Versionen der auftretenden Probleme sowie eine Methode, eine verlorene Adjazenz zwischen benachbarten Regionen in einem Iso-Hexagon Kartogramm zu visualisieren. Und schließlich präsentieren wir eine experimentelle Auswertung unseres Models.
description: In this thesis we approach the topic of automated generation of stable Demers cartograms and iso-hexagon cartograms. A Demers cartogram/iso-hexagon cartogram is a representation of a data set on a map, which represents each country as a square/regular hexagon and uses the associated data for every country to determine the size of this square/regular hexagon. These kinds of cartograms are widely used to visualize discrepancies between the size of a country and some other georeferenced data as well as to visualize the change of a data set over time. In these series of cartograms, but also in a cartogram in general, it is of vital importance to disturb the mental model of the user as little as possible. In order to achieve this, we try to create stable sets of cartograms, which fulfill certain quality criteria, like keeping as many adjacencies as possible. For this, we present an LP formulation which can be used to create stable sets of Demers cartograms and iso-hexagon cartograms. We further present a NP-hardness proof for a generalized version of some of the problems and present a method of visualizing lost adjacencies in a iso-hexagon cartogram. Finally we present an experimental evaluation of our model.
Evidence for biquadratic exchange in the quasi-two-dimensional antiferromagnet FePS$_3$
Creators: name: Wildes, A. R.
name: Zhitomirsky, M. E.
name: Ziman, T.
name: Lançon, D.
name: Walker, H. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: FePS$_3$ is a van der Waals compound with a honeycomb lattice that is a good example of a two-dimensional antiferromagnet with Ising-like anisotropy. Neutron spectroscopy data from FePS3 were previously analysed using a straight-forward Heisenberg Hamiltonian with a single-ion anisotropy. The analysis captured most of the elements of the data, however some significant discrepancies remained. The discrepancies were most obvious at the Brillouin zone boundaries. The data are subsequently reanalysed allowing for unequal exchange between nominally equivalent nearest-neighbours, which resolves the discrepancies. The source of the unequal exchange is attributed to a biquadratic exchange term in the Hamiltonian which most probably arises from a strong magnetolattice coupling. The new parameters show that there are features consistent with Dirac magnon nodal lines along certain Brillouin zone boundaries.
description: 8 pages, 4 figures. The following article has been accepted by the Journal of Applied Physics. After it is published, it will be found at (https://publishing.aip.org/resources/librarians/products/journals/). The article was submitted as part of a special topic edition (https://publishing.aip.org/publications/journals/special-topics/jap/2d-quantum-materials-magnetism-and-superconductivity/)
Communication sur le lieu de travail et productivité : effets directs et externalité d’agglomération
Creators: name: Charlot, Sylvie
name: Duranton, Gilles
name: Charlot, Sylvie
name: Duranton, Gilles
Publisher: name: Unknown
Year: 2006
Subjects: Community/Rural/Urban Development
Productivity Analysis

description: Les fondements économiques de la concentration spatiale des activités en ville reposent, en partie, sur l'hypothèse de l'existence d'un gain de productivité lié à la plus grande possibilité d'échanges d'informations pertinentes en face-à-face, sans surcoût (en particulier de transport), dans les lieux à forte densité. La mesure de ces externalités de communication permet d'une part d'en évaluer l'impact effectif sur la productivité et, d'autre part, d'appréhender les effets des technologies de l'information et de la communication (TIC), en termes de re-dispersion des activités vers les espaces ruraux. Les effets indirects de l'environnement local (taille de la population et part locale de salariés très formés) passant par l'intensité de la communication représentent environ 22% de leurs effets directs, confirmant ainsi l'hypothèse d'externalité d'agglomération et remettant fortement en question la possibilité de redéploiement des activités vers les espaces ruraux, basée sur le seul développement des TIC.
Mixed magnetic phases in (Ga,Mn)As epilayers
Creators: name: Hamaya, K.
name: Taniyama, T.
name: Kitamoto, Y.
name: Yamazaki, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two different ferromagnetic-paramagnetic transitions are detected in (Ga,Mn)As/GaAs(001) epilayers from ac susceptibility measurements: transition at a higher temperature results from (Ga,Mn)As cluster phases with [110] uniaxial anisotropy and that at a lower temperature is associated with a ferromagnetic (Ga,Mn)As matrix with <100> cubic anisotropy. A change in the magnetic easy axis from [100] to [110] with increasing temperature can be explained by the reduced contribution of <100> cubic anisotropy to the magnetic properties above the transition temperature of the (Ga,Mn)As matrix.
TILOS ISLANDS - Technology Innovation for the local scale optimum integration of battery energy storage (WEBINAR 22/03/2021)
Creators: name: Kondili, Emilia
Publisher: name: Zenodo
Year: 2021

description: Presentation at the SOCLIMPACT webinar on 22/01/2021 to the online community. Main topics: Aegean Sea Islands The Island of Tilos TILOS Project TILOS System Main Components Sustainable Tourism Dynamics
Report on redefined comfort zones for each climate-cultural cluster - Cultural-E project Deliverable 5.1
Creators: name: Pasut, Wilmer
Publisher: name: Zenodo
Year: 2025

description: This document aims to collect and report the results of the activities ongoing within the EU-funded Cultural-E project (under grant agreement No. 870072). 

The final objective of this research (Deliverable 5.1 of the project) is to investigate user’s expectations and preferences for the indoor environment according to their preferences, climate context and cultural-social background. With a deeper focus on thermal conditions, the analysis concerns all the four main aspects of indoor environmental quality (IEQ), i.e. thermal, visual, acoustic and air quality.
Efficacité des contrats agricoles : le cas de la production de blé en Midi-Pyrénées
Creators: name: Dubois, Pierre
name: Dubois, Pierre
Publisher: name: Unknown
Year: 2006
Subjects: Crop Production/Industries
Productivity Analysis

description: Les contrats jouent un rôle de plus en plus important en agriculture. Ils restent peu étudiés en France et en Europe sur le plan microéconomique. A partir de l'analyse de tous les contrats passés entre une coopérative et ses producteurs de blé pendant quatre 4 ans, la mise en oeuvre d'un modèle microéconomique structurel de contrat permet de montrer que les contrats peuvent constituer un instrument efficace pour favoriser une production de qualité en incitant les agriculteurs produisant les meilleurs grains à augmenter leur rendements.
title: Analysing the potential of network kernel density estimation for the study of tourism based on geosocial media data
Creators: name: Tošić, Marko
Publisher: name: TU Wien
Year: 2019
Subjects: subject: Visualization
subject: Geosocial Media
subject: Network Kernel Density Estimation
subject: Street networks

description: Social media today has an important role in promoting tourist destinations. It is considered as a useful and reliable source of tourist information. The analysis of its big data can give an important insight into tourists behaviour and preferences. By using geotagged photos from social media sites, e.g. Flickr, destination management organisations can predict tourist behaviour and patterns at a destination. A major challenge today is how to track these behavioural patterns. Some of the possible methods are Kernel Density Estimation and Network Kernel Density Estimation. In this research, both analyses were used to identify areas and streets of interest of Brussels by using Flickr dataset. The assumption is that using NKDE in tourism could lead to the identification of the most popular tourist places in a city. NKDE is a density analysis on a network and it was used to identify the most popular tourist street segments in a city, while KDE was used to determine tourist areas of interest. To define tourist places, it was necessary to acquire tourist information about landmarks from various sources and compare them with the results of analyses. Areas and street segments of interest were also determined for visitors from different countries of origin. All countries of origin were included in the research and they were categorized in groups. The final product is maps presenting integration of results from both density analyses and maps with tourist attractions, per each group. Both KDE and NKDE were compared and evaluated, main differences between results of the analyses were established, and advantages and disadvantages of both methods were defined.
Automated Diagnosis and Cataloguing of Foliar Disease in Apple Trees using Ensemble of Deep Neural Networks
Creators: name: Sanku Vishnu Darshan
Publisher: name: figshare
Year: 2020
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Prior detection and identification of diseases in trees helps to eradicate the misuse of chemical fertilizers and improved production. This paper proposes the usage of Deep Ensembled Neural Networks and automation of foliar diseases identification in Apple trees by single picture of the Apple tree leaves.
Yang--Mills sphalerons in all even spacetime dimensions $d=2k$, $k>2$ : $k$=3,4
Creators: name: Brihaye, Yves
name: Tchrakian, D. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The classical solutions to higher dimensional Yang--Mills (YM) systems, which are integral parts of higher dimensional Einstein--YM (EYM) systems, are studied. These are the gravity decoupling limits of the fully gravitating EYM solutions. In odd spacetime dimensions, depending on the choice of gauge group, these are either topologically stable or unstable. Both cases are analysed, the latter numerically only. In even spacetime dimensions they are always unstable, describing saddle points of the energy, and can be described as {\it sphalerons}. This instability is analysed by constructing the noncontractible loops and calculating the Chern--Simons (CS) charges, and also perturbatively by numerically constructing the negative modes. This study is restricted to the simplest YM system in spacetime dimensions $d=6,7,8$, which is amply illustrative of the generic case.
description: 16 pages, 3 figures ; comments added, to appear in J. Phys. A
title: Cartographic symbolization for high-resolution displays
Creators: name: Mańk, Agnieszka Katarzyna
Publisher: name: TU Wien
Year: 2019
Subjects: subject: symbolization
subject: visual variables
subject: digital cartography
subject: thematic cartography
subject: SVG

description: The design guidelines for maps on screens constrain the symbol sizes due to the screen resolution limitations. However, high-resolution screens become increasingly popular and rethinking the map design for screens may be necessary. To investigate, if indeed currently available high-resolution screens create new rendering opportunities, first the related scientific work was reviewed on related topics such as visual acuity, visual display resolution, visual variables, and design guidelines for screens. Furthermore, the study with 27 participants was conducted, focusing on shape difference legibility for point and line symbols. The experiment was designed establish the smallest legible point symbols on tested high-resolution screens, and to inquire whether the screen resolution indeed limits the smallest symbols legibility. The results suggest, that only few people with perfect vision are likely to benefit from high-resolution displays. The minimal sizes of circles, squares and triangles were established for tested screen resolutions and compared to legibility results for proposed line symbols. Lastly, study limitations and research outlook was discussed.
3D outer bulge structure from near infrared star counts
Creators: name: Picaud, S.
name: Robin, A. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We attempt to study the characteristics of the different stellar populations present in the Galactic central region. A Monte Carlo method is used to simultaneously fit 11 thin disc and triaxial outer bulge density parameters on (Ks,J-Ks) star count data in almost 100 windows from the DENIS near infrared large scale survey at -8 deg < l< 12 deg and -4 deg < b < 4 deg. Various bulge density profiles and luminosity functions were tested uing a population synthesis scheme. The best models, selected by a maximum likelihood test, give the following description: the outer bulge is proxy, prolate, and oriented 10.6+/-3 deg with respect to the Sun-center direction. It seems that the main bulge population is not older than 10 Gyr, but this preliminary result needs further work to be confirmed. A significant central hole is found in the middle of the thin disc. We discuss these results in regard to previous findings and the scenario of bulge formation.
description: 17 pages, 12 figures, accepted for publication by A&A
La baisse de revenus et l’essoufflement de la productivité dans l’agriculture française depuis 1998
Creators: name: Butault, Jean-Pierre
name: Butault, Jean-Pierre
Publisher: name: Unknown
Year: 2006
Subjects: Productivity Analysis

description: Les premières années de l'application de la réforme de la PAC de 1992 ont été marquées par une évolution favorable, en termes réels, des revenus agricoles par tête (graphique 1). Elles ont été suivies d'un retournement de tendance autour des années 1998 avec une dégradation de ces revenus. Ces évolutions n'ont pas été similaires dans les différentes orientations et on a observé, par exemple, un meilleur maintien du revenu dans les exploitations de viande bovine que dans les orientations de grandes cultures. Quels sont les déterminants de ces évolutions ? Tiennent-elles à la baisse des prix des produits ? A la hausse du prix des charges ? Au système de compensation par les aides directes ? A un essoufflement des gains de productivité ? Comment se sont combinés ces différents éléments dans la formation des revenus et pourquoi n'ont-ils pas joué dans le même sens dans les différentes orientations ? Cette étude vise à apporter des éléments de réponse à ces questions en analysant l'évolution des prix des produits et des facteurs, des subventions et des gains de productivité, entre 1990 et 2004, à partir des comptes par orientation construits par le SCEES.
CD34 and CD43 block mast cell adhesion and are required for optimal mast cell reconstitution
Creators: name: Drew, Erin Christina
Publisher: name: University of British Columbia
Year: 2009

description: CD34 is a cell surface sialomucin expressed by hematopoietic stem cells (HSC) and vascular endothelia and is widely used for the enrichment of human hematopoietic stem cells because of its selective expression on progenitor cells and absence on mature hematopoietic cells. Although CD34 was undetectable in all murine progenitor cell lines tested, high expression was detected in bone marrow-derived mast cells (BMMC) and in peritoneal mast cells analyzed in vivo. Our results demonstrate that, contrary to current dogma, CD34 is expressed by one mature hematopoietic lineage: mast cells. Our data also demonstrate that antigenically, murine mast cells, and their precursors, closely resemble HSC. However, in contrast, human CD34 is not expressed by human mast cells, and this dichotomy represents a regulatory difference for this protein between these two species. Despite its popularity as an HSC marker, the function of CD34 on hematopoietic cells remains enigmatic. Here I have addressed this issue by examining the behavior of mutant mast cells lacking CD34, the related sialomucin, CD43, or both molecules. Loss of these molecules leads to a gene-dose-dependent increase in mast cell homotypic aggregation with CD34/CD43KOs > CD43KO > CD34KO > wild type. Importantly, re-expression of CD34 or CD43 in these cells caused reversal of this phenotype. Furthermore, I found that loss of these sialomucins prevented mast cell repopulation and hematopoietic precursor reconstitution in W/W[sup v] recipients. However, the ability of these cells to reconstitute lethally irradiated wild type mice is not impaired, presumably due to irradiation induced differences within the host. Our data provide the first clear-cut evidence for a hematopoietic function for CD34 and suggest that it acts as a negative regulator of cell adhesion.
title: CPS/IoT Ecosystem : exploring operational scopes for industrial internet-of-things and an analysis of quality-of-service properties
Creators: name: Dukkon, Ádám
Publisher: name: TU Wien
Year: 2019
Subjects: subject: IoT
subject: QoS
subject: IoT
subject: QoS

description: This thesis addresses the problem of monitoring the Quality of Service in CPS/IoT systems. In such heterogeneous systems, where each component is from different vendors and use diverse programming languages, the configuration, deployment, and maintenance is challenging. In order to overcome this problem, performed a QoS analysis with the result of a quality model. This quality model is used to compare different IoT use-cases based on their QoS requirements. As an IoT architecture, we suggest a scalable, fault-tolerant solution, based on Arrowhead and Docker swarm, with a deployment workflow and monitoring system. To ensure a certain QoS level within the system, we implemented a QoS monitoring and reconfiguration service. This service ensures that the system works optimal, it detects and reacts to the possible QoS violations. As an evaluation, we provide a series of experiments, and an industrial use-case, which validates our solution in a real-world scenario.
Parton Saturation Approach in Heavy Quark Production at High Energies
Creators: name: Goncalves, V. P.
name: Machado, M. V. T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The high parton density regime of the Quantum Chromodynamics (QCD), where the physics of parton saturation is expected to be dominant, is briefly discussed. Some phenomenological aspects of saturation are described, mainly focusing on possible signatures of the non-linear QCD dynamics in the heavy quark production in electron-proton/nucleus collisions. Implications of these effects in the heavy quark production in ultraperipheral heavy-ion collisions are also presented.
description: Invited brief review for Mod. Phys. Lett. A, 15 pages, 3 figures; Refs added
Le soja brésilien est compétitif mais à quel prix pour l’environnement ?
Creators: name: Bertrand, Jean-Pierre
name: Bertrand, Jean-Pierre
Publisher: name: Unknown
Year: 2006
Subjects: Crop Production/Industries
Environmental Economics and Policy

description: Le Brésil se trouve au coeur des débats sur l'analyse de la dynamique agricole et agro-alimentaire mondiale grâce à ses performances en termes de compétitivité sur les marchés internationaux mais aussi à cause des risques que le développement de son modèle de production agricole fait courir à l'environnement. Son poids s'est considérablement renforcé dans les négociations commerciales menées dans le cadre de l'Organisation mondiale du commerce (OMC) à mesure que s'accroissait sa part dans la production et les échanges mondiaux. La poursuite de l'expansion de sa frontière agricole et la modernisation de son agriculture lui ont permis d'augmenter rapidement ses exportations agricoles et agro-alimentaires, et singulièrement celles de soja, de viande de volaille et de porc qui s'ajoutent à celles, plus traditionnelles, de sucre ou de café. En même temps, il est devenu un interlocuteur majeur dans toutes les discussions concernant la préservation de l'environnement, notamment à propos de l'Amazonie. Le cas du développement accéléré de la culture du soja illustre bien les défis auxquels le Brésil est confronté. L'expansion du "complexe soja" dans les régions du Nord du pays est-elle une chance ou une menace ?
Suppression of Spin Frustration due to Orbital Selection
Creators: name: Onishi, Hiroaki
name: Hotta, Takashi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In order to clarify a crucial role of orbital degree of freedom in geometrically frustrated systems, we investigate both ground- and excited-state properties of the e_g-orbital degenerate Hubbard model on two kinds of lattices, ladder and zigzag chain, by using numerical techniques. In the ladder, spin correlation extends on the whole system, while the zigzag chain is decoupled to a double chain and spin excitation is confined in one side of the double chain due to the selection of a specific orbital. We envision a kind of self-organization phenomenon that the geometrically frustrated multi-orbital system is spontaneously reduced to a one-orbital model to suppress the spin frustration.
description: 4 pages, 4 figures
Braking indices of young radio pulsars: theoretical perspective
Creators: name: Igoshev, A. P.
name: Popov, S. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently, Parthsarathy et al. analysed long-term timing observations of 85 young radio pulsars. They found that 11 objects have braking indices ranging $\sim 10-100$, far from the classical value $n=3$. They also noted a mild correlation between measured value of $n$ and characteristic age of a radio pulsar. In this article we systematically analyse possible physical origin of large braking indices. We find that a small fraction of these measurements could be caused by gravitational acceleration from an unseen ultra-wide companion of a pulsar or by precession. Remaining braking indices cannot be explained neither by pulsar obliquity angle evolution, nor by complex high-order multipole structure of the poloidal magnetic field. The most plausible explanation is a decay of the poloidal dipole magnetic field which operates on a time scale $\sim 10^4-10^5$ years in some young objects, but has significantly longer time scale in other radio pulsars. This decay can explain both amplitude of measured $n$ and some correlation between $n$ and characteristic age. The decay can be caused by either enhanced crystal impurities in the crust of some isolated radio pulsars, or more likely, by enhanced resistivity related to electron scattering off phonons due to slow cooling of low-mass neutron stars. If this effect is indeed the main cause of the rapid magnetic field decay manifesting as large braking indices, we predict that pulsars with large braking indices are hotter in comparison to those with $n\approx 3$.
description: Submitted to MNRAS
title: Soil Additives and Alternative Crops for Drought Defense in the Intermountain West
Creators: name: Sullivan, Tina M.
Publisher: name: Utah State University
Year: 2024

description: The Western U.S. looks for water optimization and conservation as agriculture is the largest water diverter, and resources are pressured by urban growth, winter snowpack instability, and drought persistence. Agricultural producers have several potential options to optimize water use with different investments associated with them. Options with varying levels of risks and known management practices include alternative crops, soil wetting agents, and crop biologicals.
An alternative crop that grew incredibly fast in popularity was industrial hemp (Cannabis sativa) despite limited agronomic knowledge for best management practices. Field trials occurred (2020-2022) near Logan, UT to test a total of 17 common regionally available hemp cultivars. The cultivars producing the best yields and quality included Abacus Improved, Trump, and Royal South. However, high performance variability of cultivars indicated that more testing may be required as stability in cultivar stock occurs.
A two-year (2020-21) hemp trial examined combinations of three hemp cultivars, four sprinkler irrigation sprinkler technologies, and four irrigation rates. The three hemp cultivars responded similarly to irrigation management, although there was high plant variability. This research suggested that floral hemp could be irrigated less than other common region crops to maintain yield in the region and potentially control THC concentrations.
An online grower survey gathered responses from 85 licensed Utah hemp growers to understand practices implemented in the beginning years, representing 72% of Utah counties and covering outdoor and indoor growing conditions. Results indicated opportunities for improved fertilizer, irrigation, and pest best management practices for hemp to refine product quality, production costs, and revenues.
Similar studies were conducted to test soil wetting agents and bio-stimulants. Both product types were tested in silage corn (Zea mays), alfalfa (Medicago sativa), and small grain forage (Triticum aestivum, Hordeum vulgare, and Secale cereale × Triticum aestivum). Trials were conducted from 2019 to 2023 for wetting agents, and 2022 to 2023 for biologicals at Logan, Vernal, and Cedar City, Utah. Yield and forage quality parameters were rarely enhanced by product application. Based on these results, tested soil wetting agents nor biologicals should not be used as drought protectors in soils with limited soil restriction.
Avoiding BBN Constraints on Mirror Models for Sterile Neutrinos
Creators: name: Mohapatra, R. N.
name: Nasri, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We point out that in models that explain the LSND result for neutrino oscillation using the mirror neutrinos, the big bang nucleosynthesis constraint can be avoided by using the late time phase transition that only helps to mix the active and the sterile neutrinos. We discuss the astrophysical as well as cosmological implications of this proposal.
description: 5 pages, latex; more discussion added; results unchanged
title: Context enrichment of crowdsourcing tasks for ontology validation
Creators: name: Gamerith, Stefan
Publisher: name: TU Wien
Year: 2019
Subjects: subject: Ontology Validation
subject: Crowdsourcing
subject: Context

description: Validating the relevance of ontologies is considered an important task in the Semantic Web Lifecycle. This holds especially for learned ontologies which contain quite naturally errors. Although many errors can be tackled algorithmically, solving more complex problems by machines can be very tricky. Crowdsourcing offers a cost effective alternative in which tasks are solved by a large group of human workers. However, the performance of existing approaches that combine ontology validation with Crowdsourcing is still not satisfying. A promising way of tackling this problem is to enrich Crowdsourcing tasks with additional contextual information to improve their understanding. This Context has not only a positive impact on the crowds performance but also raises the results quality. Even though recent research showed advances in this area, the use of Context was not explicitly targeted. In this thesis we present three novel methods that enrich Crowdsourcing tasks with contextual information to validate the relevance of concepts for a particular domain of interest. First, the Ontology based Approach processes hierarchical relations. Second, the Metadata based Approach generates descriptions based on annotations that are encoded within the ontology. Third, the idea of the Dictionary based Approach is to build up contextual information from example sentences by consulting the online dictionary WordNik. For the analysis of all three approaches, we integrated these into the existing uComp Protege Plugin which facilitates the creation and execution of crowdsourcing tasks for ontology validation from within the Protege ontology editor. The evaluation was performed on three ontologies covering the domains of climate change, tennis and finance. For each dataset, the performance metrics Precision, Recall and F-Measure were calculated to compare the methods against the existing baseline approach that used no contextual information. The results showed that the Metadata based Approach outperformed all other methods. The other two approaches had some difficulties in certain situations, for example the Dictionary based Approach sometimes added inappropriate explanations, especially for concepts with multiple meanings associated. Likewise, the Ontology based Approach had problems with loosely connected ontologies containing just a few subsumption relations. However, all three approaches delivered results of high quality (F-Measure above 80%), indicating that adding Context to Crowdsourcing tasks is a cost-effective method of improving the crowds performance.
XMM-Newton Observations of G32.45+0.1and G38.55+0.0: diffuse hard X-ray sources found with the ASCA Galactic Plane Survey
Creators: name: Yamaguchi, Hiroya
name: Ueno, Masaru
name: Koyama, katsuji
name: bamba, Aya
name: Yamauchi, Shigeo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on XMM-Newton observations of G32.45+0.1 and G38.55+0.0. These were discovered as diffuse hard X-ray sources with the ASCA Galactic plane survey, but the limited spatial resolution of ASCA could not conclude whether these are truly diffuse or a group of unresolved point-sources. XMM-Newton, with higher spatial resolution than ASCA, confirmed that G32.45+0.1 has a diffuse shell-like structure with a radius of ~4'. The spectrum shows featureless continuum, hence can be fitted with a power-law model of Gamma ~2.2 with an absorption of N_H~5.2*10^{22}cm^{-2}. From this N_H value, we estimate the distance to G32.45+0.1 to be ~17kpc, then the luminosity (in the 0.5-10.0keV band) and radius of the shell are ~9.5*10^{34}ergs/s and ~20pc, respectively. The radio complex sources in the NRAO/VLA Sky Survey (NVSS; 1.4GHz) are globally associated to the X-ray shell of G32.45+0.1. Therefore G32.45+0.1 is likely to be a synchrotron dominant shell-like SNR. No significant diffuse structure was found in the XMM-Newton image of another ASCA diffuse source G38.55+0.0. The upper limit of the observed flux (0.5-10.0keV) is estimated to be 9.0*10^{-13}ergs/cm^2/s being consistent with the ASCA result.
description: Accepted for publication in Publications of the Astronomical Society of Japan, 12 pages, 5 figures
Quantum criticality in the 2d quasiperiodic Potts model
Creators: name: Agrawal, Utkarsh
name: Gopalakrishnan, Sarang
name: Vasseur, Romain
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quantum critical points in quasiperiodic magnets can realize new universality classes, with critical properties distinct from those of clean or disordered systems. Here, we study quantum phase transitions separating ferromagnetic and paramagnetic phases in the quasiperiodic $q$-state Potts model in $2+1d$. Using a controlled real-space renormalization group approach, we find that the critical behavior is largely independent of $q$, and is controlled by an infinite-quasiperiodicity fixed point. The correlation length exponent is found to be $ν=1$, saturating a modified version of the Harris-Luck criterion.
description: 6 pages, 3 figures, 4 pages of supplemental material
Signes officiels de qualité : éléments de bilan d'une politique publique
Creators: name: Hassan, Daniel
name: Requillart, Vincent
name: Monier-Dilhan, Sylvette
name: Hassan, Daniel
name: Requillart, Vincent
name: Monier-Dilhan, Sylvette
Publisher: name: Unknown
Year: 2006
Subjects: Agricultural and Food Policy
Food Consumption/Nutrition/Food Safety

description: Les signes officiels de qualité constituent un dispositif important de la politique agricole française. D'abord destinés à des agriculteurs auxquels ils apportent une possibilité de relâcher la concurrence par les coûts, leur domaine d'application a été progressivement élargi à l'ensemble des produits agro-alimentaires. Ils sont ainsi associés fréquemment à de grandes marques privées et, plus récemment, aux marques d'enseigne de la grande distribution. Par delà ses aspects techniques - homogénéisation et signalement de la qualité -, cette politique de qualité constitue également une politique de développement et d'occupation de l'espace rural. Quelles conséquences a-t-elle eu en matière de valorisation des produits par rapport aux produits standard ? Quelle redistribution vers l'amont, vers les producteurs agricoles initialement destinataires permet-elle ? L'objet de ce document est de présenter quelques résultats de recherche concernant ces deux questions.
Localization of Kv1.5 in native and heterologous cell systems
Creators: name: Eldstrom, Jodene
Publisher: name: University of British Columbia
Year: 2009

description: Ion channel synthesis, trafficking and localization within the plasma membrane are highly regulated processes. They involve convergence of signals at the level of mRNA synthesis, chaperone-mediated folding and trafficking, interplay of kinases and phosphatases and assembly of macromolecular complexes fixed in place via anchoring proteins connected to the cytoskeleton. Little is known regarding the mechanisms that ensure the efficient surface membrane expression and localization of the potassium ion channel, Kvl.5, within cardiac myocytes or even heterologous cell systems. The work presented here is part of an ongoing attempt to understand these mechanisms. A common protein-protein binding motif has been studied that binds PDZ proteins found to be important for the localization of many membrane proteins. The PDZ protein, PSD-95 but not SAP97, efficiently binds the C-terminal PDZ binding domain of Kvl.5 in yeast two-hybrid assays, GST pull-down experiments, and in coimmunoprecipitations. Both of these PDZ proteins can also regulate channel expression through the N-terminus of the channel. While PSD-95 and a channel C-terminal truncation mutant were co-immunoprecipitated, no direct interaction was detected with SAP97 despite obvious increases in channel surface expression. In the process of developing efficient detection methods for Kvl.5 in native cardiac tissue, the expression and localization of the channel in mammalian cardiac myocytes was defined to understand potential targeting and retention mechanisms. A detailed characterization of antibodies and expression of Kvl.5 in canine cardiac tissue unambiguously demonstrated a physiological role for the channel expressed in the atria and contributing to the repolarization phase of the atrial action potential. A more detailed examination of channel localization failed to find evidence of targeting to specialized membrane domains such as caveolae and/or lipid rafts. At the resolution of fluorescence microscopy only minor colocalization was found with the caveolar protein, caveolin-3, and the channel was absent from light-buoyant fractions along with raft markers in sucrose gradient fractionations. Overall, the work in this thesis has begun to provide insight into the multiple mechanisms regulating Kv channel surface expression and localization. Clearly, such mechanisms will prove to be of central importance in both the physiological and pharmacological control of channel activity in cardiac tissues.
Socially driven business models for people-oriented renewable energy communities in island environments (WEBINAR 22/03/2021)
Creators: name: Heinz, Helen
Publisher: name: Zenodo
Year: 2021

description: Presentation at the SOCLIMPACT webinar on 22/03/2021 to the online community Main topics: The Smart-BEEjS project Drivers for energy transition in island enviroments What is a business model? People-oriented renewable energy communities Best practice pathway: Isle of Eigg Best practice pathway: Orkney Islands Best practice pathway: Samso Island Conclusion
Quasinormal modes of hot, cold and bald Einstein-Maxwell-scalar black holes
Creators: name: Blázquez-Salcedo, Jose Luis
name: Herdeiro, Carlos A. R.
name: Kahlen, Sarah
name: Kunz, Jutta
name: Pombo, Alexandre M.
name: Radu, Eugen
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Einstein-Maxwell-scalar models allow for different classes of black hole solutions, depending on the non-minimal coupling function $f(ϕ)$ employed, between the scalar field and the Maxwell invariant. Here, we address the linear mode stability of the black hole solutions obtained recently for a quartic coupling function, $f(ϕ)=1+αϕ^4$ [1]. Besides the bald Reissner-Nordström solutions, this coupling allows for two branches of scalarized black holes, termed cold and hot, respectively. For these three branches of black holes we calculate the spectrum of quasinormal modes. It consists of polar scalar-led modes, polar and axial electromagnetic-led modes, and polar and axial gravitational-led modes. We demonstrate that the only unstable mode present is the radial scalar-led mode of the cold branch. Consequently, the bald Reissner-Nordström branch and the hot scalarized branch are both mode-stable. The non-trivial scalar field in the scalarized background solutions leads to the breaking of the degeneracy between axial and polar modes present for Reissner-Nordström solutions. This isospectrality is only slightly broken on the cold branch, but it is strongly broken on the hot branch.
description: 21 pages, 8 figures
The Quaternary landforms of the Büyük Menderes Graben System: the southern Menderes Massif, western Anatolia, Turkey
Creators: name: Özpolat, Emrah
name: Yıldırım, Cengiz
name: Görüm, Tolga
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Inorganic Chemistry
subject: Computational Biology

description: We present the first detailed Quaternary landform map of the Büyük Menderes Graben System, located in western Turkey which is one of the most active extensional domains in the world. The main map was produced with a combination of TanDEM-X (12.5 m resolution), Red Relief Image Map, unmanned aerial vehicle, Google Earth images, and multiple fieldworks. The main map is presented at a scale of 1:160,000 although landforms were mapped at a scale of 1:15,000. The ten Quaternary landforms were defined considering their surface morphology and depositional environment. The alluvial fans, river terraces, and floodplains are the most common landforms. The spatial pattern of the alluvial fans and river terraces showed the variable rates of tectonics and surface processes along the strike of the graben system. The distribution of the meander cut-offs and paleo-shorelines imply that Büyük Menderes Graben System is vulnerable to geohazards like flash-flood sedimentation and flood events.
PRESERVATION AND CONSERVATION OF LIBRARY MATERIALS - STRATEGIES FOR SUSTAINABLE ACCESS
Creators: name: Temitope Samuel, Owokole
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 461006
subject: Library studies

description: The article, Preservation and Conservation of Library Materials - Strategies for Sustainable Access by Temitope Samuel Owokole, discusses the importance of preserving and conserving library materials to ensure their long-term accessibility. It highlights the challenges libraries face in maintaining collections and proposes strategies for sustainable preservation.
S-brane solutions in gauged and ungauged supergravities
Creators: name: Gutperle, Michael
name: Sabra, Wafic
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct time dependent S-brane solutions in gauged and ungauged supergravities in various dimensions. The supergravity solutions we find are all special cases of solutions in gauged supergravities with symmetric potentials. We discuss some properties of these solutions and their relation to topological black holes in anti-de Sitter spaces.
description: 17 pages, latex, no figures, v2 references added, version to appear in PLB