cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Pathology - From the Tissue Level to Clinical Manifestations and Inter-professional Care
Creators: name: Kong, Jennifer
name: Dyck, Helen
Publisher: name: University of British Columbia Library
Year: 2022
Subjects: subject: FOS: Medical and health sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: This multimedia resource provides the science behind the disease that a health care professional is managing and an explanation of the signs and symptoms a patient is experiencing, starting at the tissue level.  Each disease begins with a review of normal anatomy, histology and physiology - followed by the changes the disease has on the tissue (histopathology or anatomic pathology), organ (gross pathology), and function (pathophysiology).  Videos and photos of gross pathological specimens & histological slides are included in every topic, with videolessons guiding viewers on the observable pathological changes.  Because working with patients in their health journey is a team affair, this resource highlights the interprofessional collaboration that occurs between health care providers. This resource includes personal interviews with many health care professionals, explaining their role in a patient's diagnosis and/or treatment and management.
Modelling and analysing relations between entities using the multi-agents and social network approaches
Creators: name: Koźlak, Jarosław
name: Zygmunt, Anna
name: Nawarecki, Edward
Publisher: name: arXiv
Year: 2013
Subjects: subject: Social and Information Networks (cs.SI)
subject: Multiagent Systems (cs.MA)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In this work, the concept of a system for analysing social relations between entities using the social network analysis and multi-agent system approaches is presented. The following problems especially appear within the domain of our interests: identification of the most influential individuals in a given society, identification of roles played by the given individuals in that society and the recognition of groups of individuals strongly connected with one another. For the analysis of these problems, two application domains are selected: an analysis of data regarding phone calls and analysis of Internet Weblogs.
EFFICIENT AND DIVERSIFIABLE SYNTHESES OF STREPTOMYCES COELICOLOR GAMMA-BUTYROLACTONES
Creators: name: Lakkis, Hani G
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Organic chemistry not elsewhere classified

description: Streptomyces bacteria use γ-butyrolactone (GBL) hormones to signal biosynthesis of natural products, many of which are useful as medicines, agricultural chemicals, and chemical tools. These GBL hormones have been the target of synthetic efforts for over a decade due to their promising potential to unlock novel natural products that can aid in the fight against cancer, fungal infections, bacterial infections, and more. However, previous syntheses of the Streptomyces coelicolor GBLs suffer from lengthy syntheses, low yields, low enantioselectivity or diastereoselectivity, or lack of diversifiability. The work described herein bypasses each of these issues. The synthesis is shorter than previous efforts, accessing the final molecules in six steps while also having high enantioselectivity, diastereoselectivity, and overall yield. In addition, work has begun to create derivatives of these natural GBLs using five-membered lactam and thiolactone cores, which could have greater stability than the traditional lactone GBL core.
Stringy Membranes in AdS/CFT
Creators: name: Axenides, Minos
name: Floratos, Emmanuel
name: Linardopoulos, Georgios
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study membrane configurations in AdS_{7/4}xS^{4/7}. The membranes are wrapped around the compact manifold S^{4/7} and are dynamically equivalent to bosonic strings in AdS_5. We thus conveniently identify them as "Stringy Membranes". For the case of AdS_7xS^4, their construction is carried out by embedding the Polyakov action for classical bosonic strings in AdS_5, into the corresponding membrane action. Therefore, every string configuration in AdS_5 can be realized by an appropriately chosen stringy membrane in AdS_7xS^4. We discuss the possibility of this being also the case for stringy membranes in AdS_4xS^7/Z^k (k > 1 or k = 1). By performing a stability analysis to the constructed solutions, we find that the (membrane) fluctuations along their transverse directions are organized in multiple Lamé stability bands and gaps in the space of parameters of the configurations. In this membrane picture, strings exhibit a single band/gap structure.
description: 40 pages, 9 figures; published version
Can we measure the slopes of density profiles in dwarf spheroidal galaxies?
Creators: name: Kowalczyk, Klaudia
name: Lokas, Ewa L.
name: Kazantzidis, Stelios
name: Mayer, Lucio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using collisionless N-body simulations of dwarf galaxies orbiting the Milky Way (MW) we construct realistic models of dwarf spheroidal (dSph) galaxies of the Local Group. The dwarfs are initially composed of stellar disks embedded in dark matter haloes with different inner density slopes and are placed on an eccentric orbit typical for MW subhaloes. After a few Gyr of evolution the stellar component is triaxial as a result of bar instability induced by tidal forces. Observing the simulated dwarfs along three principal axes of the stellar component we create mock data sets and determine the their half-light radii and line-of-sight velocity dispersions. Using the estimator proposed by Wolf et al. we calculate masses within half-light radii. The masses obtained this way are over(under)estimated by up to a factor of two when the line of sight is along the longest (shortest) axis of the stellar component. We then divide the initial stellar distribution into an inner and outer population and trace their evolution in time. The two populations, although affected by tidal forces, retain different density profiles even after a few Gyr. We measure the half-light radii and velocity dispersions of the stars in the two populations along different lines of sight and use them to estimate the slope of the mass distribution in the dwarfs following the method proposed by Walker & Penarrubia. The inferred slopes are systematically over- or underestimated, depending on the line of sight. In particular, when the dwarf is seen along the longest axis of the stellar component, a significantly shallower density profile is inferred than the real one measured from the simulations. Since most dSphs are non-spherical and their orientation with respect to our line of sight is unknown, the method can be reliably applied only to a large sample of dwarfs when these systematic errors are expected to be diminished.
description: 13 pages, 15 figures, 1 table, accepted for publication in MNRAS
The distribution of r-free numbers in arithmetic progressions
Creators: name: Gibson, Jason
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11N25 (Primary), 11N69 (Secondary)

description: A positive integer n is called r-free if n is not divisible by the r-th power of a prime. Generalizing earlier work of Orr, we provide an upper bound of Bombieri-Vinogradov type for the r-free numbers in arithmetic progressions.
description: 5 pages
Vocalnayno: Designing a Game-Based Intervention to Support Reading Development in Primary Schools
Creators: name: Scott, Michael 'Adrir'
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: K.3.1

description: Encouraging children to read frequently and helping them to develop their reading skills as effectively as possible can be a challenge for some primary schools. This research questions whether the use of a game-based intervention can integrate into the existing teaching culture to aid volunteer teaching assistants in achieving a more significant impact on pupil reading development. A prototype based on the initial process of requirements gathering is presented using Multimedia Fusion Developer 2. The design incorporates a game-like exercise where a foam volcano character releases bubbles containing letters and words. Pupils must read these aloud in order to burst them open, which is recorded as a metric of reading ability.
description: Presented at the 6th European Conference on Games-Based Learning, Oct 4-5, 2012, Cork, Ireland
On the third- and fourth-order constants of incompressible isotropic elasticity
Creators: name: Destrade, Michel
name: Ogden, Ray W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Consider the constitutive law for an isotropic elastic solid with the strain-energy function expanded up to the fourth order in the strain, and the stress up to the third order in the strain. The stress-strain relation can then be inverted to give the strain in terms of the stress with a view to considering the incompressible limit. For this purpose, use of the logarithmic strain tensor is of particular value. It enables the limiting values of all nine fourth-order elastic constants in the incompressible limit to be evaluated precisely and rigorously. In particular, it is explained why the three constants of fourth-order incompressible elasticity $μ$, $\bar{A}$, and $\bar D$ are of the same order of magnitude. Several examples of application of the results follow, including determination of the acoustoelastic coefficients in incompressible solids and the limiting values of the coefficients of nonlinearity for elastic wave propagation.
Determination of the neutrino mass ordering by combining PINGU and Daya Bay II
Creators: name: Blennow, Mattias
name: Schwetz, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The relatively large measured value of theta_13 has opened various possiblities to determine the neutrino mass ordering, among them using PINGU, the low-energy extention of the IceCube neutrino telescope, to observe matter effects in atmospheric neutrinos, or a high statistics measurment of the neutrino energy spectrum at a reactor neutrino experiment with a baseline of around 60 km, such as the Daya Bay II project. In this work we point out a synergy between these two approaches based on the fact that when data are analysed with the wrong neutrino mass ordering the best fit occurs at different values of |Delta m^2_31| for PINGU and Daya Bay II. Hence, the wrong mass ordering can be excluded by a mismatch of the values inferred for |Delta m^2_31|, thanks to the excellent accuracy for Delta m^2_31 of both experiments. We perform numerical studies of PINGU and Daya Bay II sensitivities and show that the synergy effect may lead to a high significance determination of the mass ordering even in situations where the individual experiments obtain only poor sensitivity.
description: 23 pages, 7 figures (15 eps files), typos and minor mistakes corrected, final version to appear in JHEP
title: Climate change effects on earthworms - a review
Creators: name: Singh , Jaswinder
name: Schädler, Martin
name: Demetrio, Wilian
name: Brown , George G.
name: Eisenhauer , Nico
Publisher: name: SOIL ORGANISMS 91(3)
Year: 2019

description: Climate change can have a plethora of effects on organisms above and below the ground in terrestrial ecosystems. Given the tremendous biodiversity in the soil and the many ecosystem functions governed by soil organisms, the drivers of soil biodiversity have received increasing attention. Various climatic factors like temperature, precipitation, soil moisture, as well as extreme climate events like drought and flood have been shown to alter the composition and functioning of communities in the soil. Earthworms are important ecosystem engineers in the soils of temperate and tropical climates and play crucial roles for many ecosystem services, including decomposition, nutrient cycling, and crop yield. Here, we review the published literature on climate change effects on earthworm communities and activity. In general, we find highly species- and ecological group-specific responses to climate change, which are likely to result in altered earthworm community composition in future ecosystems. Earthworm activity, abundance, and biomass tend to increase with increasing temperature at sufficiently high soil water content, while climate extremes like drought and flooding have deleterious effects. Changing climate conditions may facilitate the invasion of earthworms at higher latitudes and altitudes, while dryer and warmer conditions may limit earthworm performance in other regions of the world. The present summary of available information provides a first baseline for predictions of future earthworm distribution. It also reveals the shortage of studies on interacting effects of multiple global change effects on earthworms, such as potential context-dependent effects of climate change at different soil pollution levels and across ecosystem types.
Norm-conserving pseudopotentials with chemical accuracy compared to all-electron calculations
Creators: name: Willand, Alexander
name: Kvashnin, Yaroslav O.
name: Genovese, Luigi
name: Vázquez-Mayagoitia, Álvaro
name: Deb, Arpan Krishna
name: Sadeghi, Ali
name: Deutsch, Thierry
name: Goedecker, Stefan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: By adding a non-linear core correction to the well established Dual Space Gaussian type pseudopotentials for the chemical elements up to the third period, we construct improved pseudopotentials for the Perdew Burke Ernzerhof (PBE) functional and demonstrate that they exhibit excellent accuracy. Our benchmarks for the G2-1 test set show average atomization energy errors of only half a kcal/mol. The pseudopotentials also remain highly reliable for high pressure phases of crystalline solids. When supplemented by empirical dispersion corrections the average error in the interaction energy between molecules is also about half a kcal/mol. The accuracy that can be obtained by these pseudopotentials in combination with a systematic basis set is well superior to the accuracy that can be obtained by commonly used medium size Gaussian basis sets in all-electron calculations.
description: 11 pages, 10 figures
Adaptive strategies for the deployment of rapid diagnostic tests for COVID-19: a modelling study
Creators: name: Cilloni, Lucia
name: Kendall, Emily
name: Dowdy, David
name: Arinaminpathy, Nimalan
Publisher: name: Zenodo
Year: 2022
Subjects: COVID-19, lateral flow assays, mathematical modelling

description: Supporting information for "Adaptive strategies for the deployment of rapid diagnostic tests for COVID-19: a modelling study"
Free field representation and form factors of the chiral Gross-Neveu model
Creators: name: Britton, Stephen
name: Frolov, Sergey
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The free field representation of the Zamolodchikov-Faddeev algebra for the chiral Gross-Neveu model is analysed in detail, and used to construct an integral representation for form factors of the model.
Multiplicative functionals on ensembles of non-intersecting paths
Creators: name: Borodin, Alexei
name: Corwin, Ivan
name: Remenik, Daniel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The purpose of this article is to develop a theory behind the occurrence of "path-integral" kernels in the study of extended determinantal point processes and non-intersecting line ensembles. Our first result shows how determinants involving such kernels arise naturally in studying ratios of partition functions and expectations of multiplicative functionals for ensembles of non-intersecting paths on weighted graphs. Our second result shows how Fredholm determinants with extended kernels (as arise in the study of extended determinantal point processes such as the Airy_2 process) are equal to Fredholm determinants with path-integral kernels. We also show how the second result applies to a number of examples including the stationary (GUE) Dyson Brownian motion, the Airy_2 process, the Pearcey process, the Airy_1 and Airy_{2->1} processes, and Markov processes on partitions related to the z-measures.
description: 32 pages, 1 figure
Characterizing the Orbital and Dynamical State of the HD 82943 Planetary System With Keck Radial Velocity Data
Creators: name: Tan, Xianyu
name: Payne, Matthew J.
name: Lee, Man Hoi
name: Ford, Eric B.
name: Howard, Andrew W.
name: Johnson, John. A.
name: Marcy, Geoff W.
name: Wright, Jason T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present an updated analysis of radial velocity data of the HD 82943 planetary system based on 10 years of measurements obtained with the Keck telescope. Previous studies have shown that the HD 82943 system has two planets that are likely in 2:1 mean-motion resonance (MMR), with the orbital periods about 220 and 440 days (Lee et al. 2006). However, alternative fits that are qualitatively different have also been suggested, with two planets in a 1:1 resonance (Gozdziewski & Konacki 2006) or three planets in a Laplace 4:2:1 resonance (Beauge et al. 2008). Here we use \c{hi}2 minimization combined with parameter grid search to investigate the orbital parameters and dynamical states of the qualitatively different types of fits, and we compare the results to those obtained with the differential evolution Markov chain Monte Carlo method. Our results support the coplanar 2:1 MMR configuration for the HD 82943 system, and show no evidence for either the 1:1 or 3-planet Laplace resonance fits. The inclination of the system with respect to the sky plane is well constrained at about 20(+4.9 -5.5) degree, and the system contains two planets with masses of about 4.78 MJ and 4.80 MJ (where MJ is the mass of Jupiter) and orbital periods of about 219 and 442 days for the inner and outer planet, respectively. The best fit is dynamically stable with both eccentricity-type resonant angles θ1 and θ2 librating around 0 degree.
description: 55 pages, 21 figures. Accepted for publication in ApJ
Thermal width and quarkonium dissociation by inelastic parton scattering
Creators: name: Brambilla, Nora
name: Escobedo, Miguel Angel
name: Ghiglieri, Jacopo
name: Vairo, Antonio
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In a weak-coupling effective field theory framework we study quarkonium dissociation induced by inelastic scattering with partons in the medium. This is the dominant dissociation process for temperatures such that the Debye mass is larger than the binding energy. We evaluate the dissociation cross section and the corresponding thermal decay width. At leading order we derive a convolution formula relating the two, which is consistent with the optical theorem and QCD at finite temperature. Bound state effects are systematically included. They add contributions to the cross section and width that are beyond a quasi-free approximation, whose validity is critically reviewed. For temperatures such that the Debye mass is smaller than the binding energy, the dominant dissociation mechanism is gluo-dissociation consisting in quarkonium dissociation induced by the absorbtion of a gluon from the medium. We calculate the gluo-dissociation cross section and width at next-to-leading-order accuracy.
description: 33 pages. 11 figures
MHD Turbulence and Cosmic Ray Reacceleration in Galaxy Clusters
Creators: name: Beresnyak, Andrey
name: Xu, Hao
name: Li, Hui
name: Schlickeiser, Reinhard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Cosmological MHD simulations of galaxy cluster formation show a significant amplification of seed magnetic fields. We developed a novel method to decompose cluster magnetized turbulence into modes and showed that the fraction of the fast mode is fairly large, around 1/4 in terms of energy. This is larger than that was estimated before, which implies that cluster turbulence interacts with cosmic rays rather efficiently. We propose a framework to deal with electron and proton reacceleration in galaxy clusters that includes feedback on turbulence. In particular, we establish a new upper limit on proton and electron fluxes based on turbulence intensity. These findings, along with detailed modeling of reacceleration, will help to reconcile the observed giant radio haloes and the unobserved diffuse gamma-ray emission from these clusters.
Meaning of Interior Tomography
Creators: name: Wang, Ge
name: Yu, Hengyong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: The classic imaging geometry for computed tomography is for collection of un-truncated projections and reconstruction of a global image, with the Fourier transform as the theoretical foundation that is intrinsically non-local. Recently, interior tomography research has led to theoretically exact relationships between localities in the projection and image spaces and practically promising reconstruction algorithms. Initially, interior tomography was developed for x-ray computed tomography. Then, it has been elevated as a general imaging principle. Finally, a novel framework known as omni-tomography is being developed for grand fusion of multiple imaging modalities, allowing tomographic synchrony of diversified features.
description: 47 pages, 14 figures, to appear in Physics in Medicine and Biology
Twisted space-time reduced model of large N QCD with two adjoint Wilson fermions
Creators: name: González-Arroyo, Antonio
name: Okawa, Masanori
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The space-time reduced model of large N QCD with two adjoint Wilson fermions is constructed by applying the symmetric twist boundary conditions with non-vanishing flux $k$. For large but finite $N=L^2$, the model should behave as the large N version of the ordinary lattice gauge model on a $V=L^4$ space-time volume. We perform a comparison of the $N$ dependence of several quantities in this model and in the $k$=0 model (corresponding to periodic boundary conditions). Although the Z$^4$(N) symmetry seems unbroken in all cases, the N-dependence analysis favours the use of the same values of $k$ and $L$ for which the symmetry is also unbroken in the pure gauge case. In particular, the $k=0$ model, studied recently by several authors, shows a large and irregular dependence on $N$ within our region of parameters. This makes this reduced model very impractical for extracting physical information about the large N lattice theory. On the contrary, the model for $N=289=17^2$ and large enough $k$ gives consistent results, even for extended observables as Wilson loops $W(R,T)$ up to $R,T$=8, matching the expected behaviour for the lattice model with a $17^4$ space-time volume.
description: latex. 14 text pages, 3 tables and 7 figures
Lepton Mixing Patterns from a Scan of Finite Discrete Groups
Creators: name: Holthausen, Martin
name: Lim, Kher Sham
name: Lindner, Manfred
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The recent discovery of a non-zero value of the mixing angle theta_13 has ruled out tri-bimaximal mixing as the correct lepton mixing pattern generated by some discrete flavor symmetry (barring large next-to-leading order corrections in concrete models). In this work we assume that neutrinos are Majorana particles and perform a general scan of all finite discrete groups with order less than 1536 to obtain their predictions for lepton mixing angles. To our surprise, the scan of over one million groups only yields 3 interesting groups that give lepton mixing patterns which lie within 3-sigma of the current best global fit values. A systematic way to categorize such groups and the implications for flavor symmetry are discussed.
description: 15 pages, 3 figures, references added and minor improvements, matches version to be appeared in Physics Letters B
Vaccination intervention on epidemic dynamics in networks
Creators: name: Peng, Xiao-Long
name: Xu, Xin-Jian
name: Fu, Xinchu
name: Zhou, Tao
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Vaccination is an important measure available for preventing or reducing the spread of infectious diseases. In this paper, an epidemic model including susceptible, infected, and imperfectly vaccinated compartments is studied on Watts-Strogatz small-world, Barabási-Albert scale-free, and random scale-free networks. The epidemic threshold and prevalence are analyzed. For small-world networks, the effective vaccination intervention is suggested and its influence on the threshold and prevalence is analyzed. For scale-free networks, the threshold is found to be strongly dependent both on the effective vaccination rate and on the connectivity distribution. Moreover, so long as vaccination is effective, it can linearly decrease the epidemic prevalence in small-world networks, whereas for scale-free networks it acts exponentially. These results can help in adopting pragmatic treatment upon diseases in structured populations.
description: 11 pages, 8 figures, RevTex4
Phase Evolution and Freeze-out within Alternative Scenarios of Relativistic Heavy-Ion Collisions
Creators: name: Ivanov, Yu. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Global evolution of the matter in relativistic collisions of heavy nuclei and the resulting global freeze-out parameters are analyzed in a wide range of incident energies 2.7 GeV $\le \sqrt{s_{NN}}\le$ 39 GeV. The analysis is performed within the three-fluid model employing three different equations of state (EoS): a purely hadronic EoS, an EoS with the first-order phase transition and that with a smooth crossover transition. Global freeze-out parameters deduced from experimental data within the statistical model are well reproduced within the crossover scenario. The 1st-order-transition scenario is slightly less successful. The worst reproduction is found within the purely hadronic scenario. These findings make a link between the EoS and results of the statistical model, and indicate that deconfinement onset occurs at $\sqrt{s_{NN}}\gsim$ 5 GeV.
description: 7 pages, 5 figures, version published in Phys. Lett. B
Feedback-induced stationary localized patterns in networks of diffusively coupled bistable elements
Creators: name: Kouvaris, Nikos E.
name: Mikhailov, Alexander S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Effects of feedbacks on self-organization phenomena in networks of diffusively coupled bistable elements are investigated. For regular trees, an approximate analytical theory for localized stationary patterns under application of global feedbacks is constructed. Using it, properties of such patterns in different parts of the parameter space are discussed. Numerical investigations are performed for large random Erdös-Rényi and scale-free networks. In both kinds of systems, localized stationary activation patterns have been observed. The active nodes in such a pattern form a subnetwork, whose size decreases as the feedback intensity is increased. For strong feedbacks, active subnetworks are organized as trees. Additionally, local feedbacks affecting only the nodes with high degrees (i.e. hubs) or the periphery nodes are considered.
title: Efficienza energetica e sostenibilità industriale: un prototipo di essiccatore a coclea
Creators: name: Crea, Francesco
name: Pagnotta, Leonardo
name: Kaliakatsos, Dimitros
Publisher: name: Università della Calabria
Year: 2016

description: Scuola "Pitagora" Scienze Ingegneristiche, Dottorato di Ricerca in Ingegneria Meccanica XXVIII Ciclo, a.a. 2015-2016
Accessing, analyzing and visualizing research data metadata using DataCite and Jupyter Notebooks
Creators: name: Ninkov, Anton
Publisher: name: Zenodo
Year: 2022

description: Interest in measuring data citation and developing metrics for data is increasing. Despite this interest, research investigating data sharing, data reuse and data citation practices remains relatively nascent. In this presentation, we will look at some of the work that has been done in the Meaningful Data Counts project in this effort. As such, the presentation will primarily focus on how the DataCite GraphQL API can be leveraged to access, analyze, and visualize research data metadata (using a Jupyter notebook). Anton will walk through the various resources and explain the functionality. Additionally, we will look the broader Meaningful Data Counts project and discuss subject classification mapping done to improve subject classification metadata as well as provide an overview of an ongoing survey about data sharing behaviours of academics will be presented. This was presented at the DH Toolbox series at the University of Ottawa.
A Stochastic Geometry Framework for Analyzing Pairwise-Cooperative Cellular Networks
Creators: name: Giovanidis, Anastasios
name: Baccelli, Francois
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Cooperation in cellular networks has been recently suggested as a promising scheme to improve system performance, especially for cell-edge users. In this work, we use stochastic geometry to analyze cooperation models where the positions of Base Stations (BSs) follow a Poisson point process distribution and where Voronoi cells define the planar areas associated with them. For the service of each user, either one or two BSs are involved. If two, these cooperate by exchange of user data and channel related information with conferencing over some backhaul link. Our framework generally allows variable levels of channel information at the transmitters. In this paper we investigate the case of limited channel state information for cooperation (channel phase, second neighbour interference), but not the fully adaptive case which would require considerable feedback. The total per-user transmission power is further split between the two transmitters and a common message is encoded. The decision for a user to choose service with or without cooperation is directed by a family of geometric policies depending on its relative position to its two closest base stations. An exact expression of the network coverage probability is derived. Numerical evaluation allows one to analyze significant coverage benefits compared to the non-cooperative case. As a conclusion, cooperation schemes can improve system performance without exploitation of extra network resources.
description: 54 pages, 23 figures
Chiral Symmetry Breaking and Meson Wave Functions in Soft-Wall AdS/QCD
Creators: name: Gutsche, Thomas
name: Lyubovitskij, Valery E.
name: Schmidt, Ivan
name: Vega, Alfredo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider mesons composed of light and heavy quarks and discuss the construction of the corresponding meson wave functions in soft-wall AdS/QCD. We specifically take care that constraints imposed by chiral symmetry breaking and by the heavy quark limit are fulfilled. The main results are: i) the wave functions of light mesons have a nontrivial dependence on the current quark mass, which gives rise to a mass spectrum consistent with the one including explicit breaking of chiral symmetry; ii) the wave functions of heavy-light mesons generate their correct mass spectrum, the mass splittings of vector and pseudoscalar states, and the correct scaling of leptonic decay constants f(Q \bar q) \sim 1/sqrt(mQ); iii) the wave functions of heavy quarkonia produce their correct mass spectrum and lead to a scaling behaviour of the leptonic decay constants f(Q \bar Q) \sim sqrt(mQ) and f(c \bar b) \sim mc/sqrt(mb) at mc << mb, consistent with potential models and QCD sum rules.
description: 10 pages
Comparative analysis of model-independent methods for exploring the nature of dark energy
Creators: name: Nesseris, Savvas
name: Garcia-Bellido, Juan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We make a comparative analysis of the various independent methods proposed in the literature for studying the nature of dark energy, using four different mocks of SnIa data. In particular, we explore a generic principal components analysis approach, the genetic algorithms, a series of approximations like Padé power law approximants, and various expansions in orthogonal polynomials, as well as cosmography, and compare them with the usual fit to a model with a constant dark energy equation of state w. We find that, depending on the mock data, some methods are more efficient than others at distinguishing the underlying model, although there is no universally better method.
description: 39 pages, 24 figures, changes match published version
Opinion Maximization in Social Networks
Creators: name: Gionis, Aristides
name: Terzi, Evimaria
name: Tsaparas, Panayiotis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The process of opinion formation through synthesis and contrast of different viewpoints has been the subject of many studies in economics and social sciences. Today, this process manifests itself also in online social networks and social media. The key characteristic of successful promotion campaigns is that they take into consideration such opinion-formation dynamics in order to create a overall favorable opinion about a specific information item, such as a person, a product, or an idea. In this paper, we adopt a well-established model for social-opinion dynamics and formalize the campaign-design problem as the problem of identifying a set of target individuals whose positive opinion about an information item will maximize the overall positive opinion for the item in the social network. We call this problem CAMPAIGN. We study the complexity of the CAMPAIGN problem, and design algorithms for solving it. Our experiments on real data demonstrate the efficiency and practical utility of our algorithms.
The searchlight effect in hyperbolic materials
Creators: name: Milton, Graeme W.
name: McPhedran, Ross C.
name: Sihvola, Ari
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The quasistatic field around a circular hole in a two-dimensional hyperbolic medium is studied. As the loss parameter goes to zero, it is found that the electric field diverges along four lines each tangent to the hole. In this limit, the power dissipated by the field in the vicinity of these lines, per unit length of the line, goes to zero but extends further and further out so that the net power dissipated remains finite. Additionally the interaction between polarizable dipoles in a hyperbolic medium is studied. It is shown that a dipole with small polarizability can dramatically influence the dipole moment of a distant polarizable dipole, if it is appropriately placed. We call this the searchlight effect, as the enhancement depends on the orientation of the line joining the polarizable dipoles and can be varied by changing the frequency. For some particular polarizabilities the enhancement can actually increase the further the polarizable dipoles are apart.
description: 21 pages, 4 figures
Gauge vector field localization on 3-brane placed in a warped transverse resolved conifold
Creators: name: Costa, F. W. V.
name: Silva, J. E. G.
name: Almeida, C. A. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We have investigated the features of the gauge vector field in a braneworld scenario built as a warped product between a 3-brane and a 2-cycle of the resolved conifold. This scenario allowed us to study how the gauge field behaves when the transverse manifold evolves upon a geometric flow that controls the singularity at the origin. Besides, since the transverse manifold has a cylindrical symmetry according to the 3-brane, this geometry can be regarded as a near brane correction of the string-like branes. Indeed, by means of a new warp function and the angular metric component of the resolved conifold, the braneworld can exhibit a conical form near the origin as well as a regular behavior in that region. The analysis of the gauge field in this background has been carried out for the s-wave state and a normalizable massless mode was found. For the massive modes, the resolution parameter avoids an infinite well on the brane and controls the depth of the well and the high of the barrier around the brane. The massive modes are slightly changed near the brane but they agreed with the string-like spectrum for large distances.
description: 17 pages, 16 figures. To appear in Physical Review D
Nucleon resonances in AdS/QCD
Creators: name: Gutsche, Thomas
name: Lyubovitskij, Valery E.
name: Schmidt, Ivan
name: Vega, Alfredo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe the electroproduction of the N(1440) Roper resonance in soft-wall AdS/QCD. The Roper resonance is identified as the first radially excited state of the nucleon, where higher-Fock states in addition to the three-quark component are included. The main conclusion is that the leading 3q component plays the dominant role in the description of electroproduction properties of this resonance: form factors, helicity amplitudes and charge densities. The obtained results are in good agreement with the recent results of the CLAS Collaboration at JLab.
description: 20 pages. arXiv admin note: text overlap with arXiv:1204.6612
To the interpretation of the upturn observed by ATIC in heavy nuclei to iron ratios
Creators: name: Panov, A. D.
name: Sokolskaya, N. V.
name: Zatsepin, V. I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is argued that the upturn observed in heavy nuclei to iron ratios as measured in the ATIC experiment could be understood within the model of closed galaxy with embedded local regions containing the sources of CR (Peters, Westergaard, 1977). The universal upturn near the energies of 200-300 GeV/n in the spectra of abundant primary nuclei is also predicted by this model, but it also predicts the source spectral index to be near 2.5.
description: 4 pages, LaTeX2e, 23rd European Cosmic Ray Symposium (2012)
Comparison of a citation-based indicator and peer review for absolute and specific measures of research-group excellence
Creators: name: Mryglod, O.
name: Kenna, R.
name: Holovatch, Yu.
name: Berche, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Digital Libraries (cs.DL)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Many different measures are used to assess academic research excellence and these are subject to ongoing discussion and debate within the scientometric, university-management and policy-making communities internationally. One topic of continued importance is the extent to which citation-based indicators compare with peer-review-based evaluation. Here we analyse the correlations between values of a particular citation-based impact indicator and peer-review scores in several academic disciplines, from natural to social sciences and humanities. We perform the comparison for research groups rather than for individuals. We make comparisons on two levels. At an absolute level, we compare total impact and overall strength of the group as a whole. At a specific level, we compare academic impact and quality, normalised by the size of the group. We find very high correlations at the former level for some disciplines and poor correlations at the latter level for all disciplines. This means that, although the citation-based scores could help to describe research-group strength, in particular for the so-called hard sciences, they should not be used as a proxy for ranking or comparison of research groups. Moreover, the correlation between peer-evaluated and citation-based scores is weaker for soft sciences.
description: To be published in "Scientometrics"
Adaptive coupling induced multi-stable states in complex networks
Creators: name: Chandrasekar, V. K.
name: Sheeba, Jane H.
name: Subash, B.
name: Lakshmanan, M.
name: Kurths, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Adaptive coupling, where the coupling is dynamical and depends on the behaviour of the oscillators in a complex system, is one of the most crucial factors to control the dynamics and streamline various processes in complex networks. In this paper, we have demonstrated the occurrence of multi-stable states in a system of identical phase oscillators that are dynamically coupled. We find that the multi-stable state is comprised of a two cluster synchronization state where the clusters are in anti-phase relationship with each other and a desynchronization state. We also find that the phase relationship between the oscillators is asymptotically stable irrespective of whether there is synchronization or desynchronization in the system. The time scale of the coupling affects the size of the clusters in the two cluster state. We also investigate the effect of both the coupling asymmetry and plasticity asymmetry on the multi-stable states. In the absence of coupling asymmetry, increasing the plasticity asymmetry causes the system to go from a two clustered state to a desynchronization state and then to a two clustered state. Further, the coupling asymmetry, if present, also affects this transition. We also analytically find the occurrence of the above mentioned multi-stable-desynchronization-multi-stable state transition. A brief discussion on the phase evolution of nonidentical oscillators is also provided. Our analytical results are in good agreement with our numerical observations.
description: Accepted for publication in Physica D: Nonlinear Phenomena
TWDTW.R
Creators: name: Huang, Xiaojuan
name: Pan, Baihong
Publisher: name: figshare
Year: 2021
Subjects: subject: 100504 Data Communications
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: TWDTW.R provides an implementation of the Time-Weighted Dynamic Time Warping (TWDTW) method for land cover mapping using multi-band satellite image time series (Maus et al. 2016).
Introduction of Intellectual Property Courses in STEM Curriculum
Creators: name: Srivastava, Madhur
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The paper explains and emphasizes the need to include mandatory Intellectual Property (IP) courses in the undergraduate and graduate curriculum of STEM students. It prescribes the proposed content of IP to be covered at undergraduate level, and graduate depending on the degree pursued by the STEM student. More importantly, this paper advocates for an Integrated PhD/JD degree to produce highly skilled patent attorneys and agents, to overcome the problem of poor quality of patents, and the high number of patent related litigations. A framework is suggested which would enable STEM departments and law schools to successfully offer this integrated degree, and students to successfully pursue and complete this degree program in a realistic manner; without compromising any stake holder's interest.
description: 4 pages, 1 figure, 2013 Integrated STEM Education Conference (ISEC)
A peculiar faint satellite in the remote outer halo of M31
Creators: name: Mackey, Dougal
name: Huxor, Avon
name: Martin, Nicolas
name: Ferguson, Annette
name: Dotter, Aaron
name: McConnachie, Alan
name: Ibata, Rodrigo
name: Irwin, Mike
name: Lewis, Geraint
name: Sakari, Charli
name: Tanvir, Nial
name: Venn, Kim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present Hubble Space Telescope imaging of a newly-discovered faint stellar system, PAndAS-48, in the outskirts of the M31 halo. Our photometry reveals this object to be comprised of an ancient and very metal-poor stellar population with age > 10 Gyr and [Fe/H] < -2.3. Our inferred distance modulus of 24.57 +/- 0.11 confirms that PAndAS-48 is most likely a remote M31 satellite with a 3D galactocentric radius of 149 (+19 -8) kpc. We observe an apparent spread in color on the upper red giant branch that is larger than the photometric uncertainties should allow, and briefly explore the implications of this. Structurally, PAndAS-48 is diffuse, faint, and moderately flattened, with a half-light radius rh = 26 (+4 -3) pc, integrated luminosity Mv = -4.8 +/- 0.5, and ellipticity = 0.30 (+0.08 -0.15). On the size-luminosity plane it falls between the extended globular clusters seen in several nearby galaxies, and the recently-discovered faint dwarf satellites of the Milky Way; however, its characteristics do not allow us to unambiguously class it as either type of system. If PAndAS-48 is a globular cluster then it is the among the most elliptical, isolated, and metal-poor of any seen in the Local Group, extended or otherwise. Conversely, while its properties are generally consistent with those observed for the faint Milky Way dwarfs, it would be a factor ~2-3 smaller in spatial extent than any known counterpart of comparable luminosity.
description: Accepted for publication in ApJ Letters
The measurements of the anomalous like-sign dimuon charge asymmetry in $p \bar{p}$ collisions by the DØ Collaboration
Creators: name: Hoeneisen, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this short review we present the history, an overview of the analysis, and some personal comments on the anomalous like-sign dimuon charge asymmetry measurements by the DØ Collaboration.
description: 6 pages, 2 figures. arXiv admin note: text overlap with arXiv:1109.1438