cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Homogeneous pattern selection and director instabilities of nematic liquid crystal polymers induced by elongational flows
Creators: name: Wang, Qi
name: Zhou, Hong
name: Forest, M. Gregory
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: We characterize homogeneous patterns, their stability, and phase transitions in nematic liquid crystalpolymers(LCPs) with imposed elongational flows. We combine the flow-induced analysis of order parameters by See et al. [J. Chem. Phys. 92, 792 (1990)], Bhave et al. [J. Rheol. 37, 413 (1993)], Rey [Macromol. Theory Simul. 4, 857 (1995)], and Wang [J. Non-Newtonian Fluid Mech. 22, 147 (1997)], with the pure nematic, full tensor analysis of Shimada et al. [J. Chem. Phys. 88, 7181 (1988)]. To make contact with these seminal studies, we select a moment-averaged Doi kinetic model for flows of rod-like nematic LCPs with a quartic short-range intermolecular potential; the connection with alternative kinetic and continuum models for flows of LCPs is noted. New elongation-induced director instabilities are revealed for patterns previously identified as candidates for stable pattern selection. From a full tensor analysis, we determine the complete phase diagram for homogeneous patterns in the parameter space of LCP concentration and elongation rate. With respect to experimental predictions, in axial extension, biaxial patterns exist but they are all unstable and the only stable patterns are uniaxial; in planar extension, above a moderate concentration the only stable nematic patterns are biaxial.
Quantum-confinement and Structural Anisotropy result in Electrically-Tunable Dirac Cone in Few-layer Black Phosphorous
Creators: name: Dolui, Kapildeb
name: Quek, Su Ying
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: 2D materials are well-known to exhibit interesting phenomena due to quantum confinement. Here, we show that quantum confinement, together with structural anisotropy, result in an electric-field-tunable Dirac cone in 2D black phosphorus. Using density functional theory calculations, we find that an electric field, E_ext, applied normal to a 2D black phosphorus thin film, can reduce the direct band gap of few-layer black phosphorus, resulting in an insulator-to-metal transition at a critical field, E_c. Increasing E_ext beyond E_c can induce a Dirac cone in the system, provided the black phosphorus film is sufficiently thin. The electric field strength can tune the position of the Dirac cone and the Dirac-Fermi velocities, the latter being similar in magnitude to that in graphene. We show that the Dirac cone arises from an anisotropic interaction term between the frontier orbitals that are spatially separated due to the applied field, on different halves of the 2D slab. When this interaction term becomes vanishingly small for thicker films, the Dirac cone can no longer be induced. Spin-orbit coupling can gap out the Dirac cone at certain electric fields; however, a further increase in field strength reduces the spin-orbit-induced gap, eventually resulting in a topological-insulator-to-Dirac-semi-metal transition.
description: 8 Pages and 8 figures in the main text + 8 supplementary figures
(2300) Jacob Naylor
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Finite time large deviations via matrix product states
Creators: name: Causer, Luke
name: Bañuls, Mari Carmen
name: Garrahan, Juan P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent work has shown the effectiveness of tensor network methods for computing large deviation functions in constrained stochastic models in the infinite time limit. Here we show that these methods can also be used to study the statistics of dynamical observables at arbitrary finite time. This is a harder problem because, in contrast to the infinite time case where only the extremal eigenstate of a tilted Markov generator is relevant, for finite time the whole spectrum plays a role. We show that finite time dynamical partition sums can be computed efficiently and accurately in one dimension using matrix product states, and describe how to use such results to generate rare event trajectories on demand. We apply our methods to the Fredrickson-Andersen (FA) and East kinetically constrained models, and to the symmetric simple exclusion process (SSEP), unveiling dynamical phase diagrams in terms of counting field and trajectory time. We also discuss extensions of this method to higher dimensions.
description: 6+2 pages, 3+2 figures
The averaging of gravity currents in porous media
Creators: name: Miller, Cass T.
name: Anderson, Daniel M.
name: McLaughlin, Richard M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003

description: We explore the problem of a moving free surface in a water-saturated porous medium that has either a homogeneous or a periodically heterogeneous permeability field. We identify scaling relations and derive similarity solutions for the homogeneous, constant coefficient case in both a Cartesian and an axisymmetric, radial coordinate system. We utilize these similarity scalings to identify half-height slumping time scales as a rough guide for field groundwater cleanup strategies involving injected brines. We derive averaged solutions using homogenization for a vertically periodic, a horizontally periodic, and a two-dimensional periodic case—the solution of which requires solving a cell problem. Using effective coefficients, we connect the first two of these homogenized solutions to the similarity scaling solution derived for the homogeneous case. By simplifying to a thin limit, retaining variations of the porous media in the horizontal direction, we derive a homogenization solution in agreement with the general horizontally layered solution and an expression for the leading-order correction. Finally, we implement two numerical solution approaches and show that self-similar scaling and agreement with leading-order averaging emerge in finite time, and demonstrate the accuracy and convergence rate of the leading order correction for both the interior and the boundary of the domain.
(2296) Louisa Elizabeth Carr
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Additional file 1 of Ultraprotective versus apneic ventilation in acute respiratory distress syndrome patients with extracorporeal membrane oxygenation: a physiological study
Creators: name: Graf, Peter T.
name: Boesing, Christoph
name: Brumm, Isabel
name: Biehler, Jonas
name: Müller, Kei Wieland
name: Thiel, Manfred
name: Pelosi, Paolo
name: Rocco, Patricia R. M.
name: Luecke, Thomas
name: Krebs, Joerg
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Inclusion criteria, exclusion criteria, criteria for discontinuation of the study. Fig. S1. Schematic flow chart of the study design. Ventilator management. Calculation of respiratory system mechanics. Computed tomography assessment.
Appendix S2 from A tropical arthropod unravels local and global environmental dependence of seasonal temperature-size response.
Creators: name: Pequeno, Pedro Aurélio Costa Lima
name: Franklin, Elizabeth
name: Norton, Roy A.
name: Morais, José W. De
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Developmental Biology

description: Sensitivity analysis of results on Rostrozetes ovulum, and methods used in the comparative analysis on environmental dependence of the strength of the seasonal TSR
An internal splash: Levitation of falling spheres in stratified                     fluids
Creators: name: McLaughlin, Richard M.
name: Adalsteinsson, David
name: Agyapong, Akua
name: Abaid, Nicole
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: We experimentally explore the motion of falling spheres in strongly stratified fluids in which the fluid transitions from low density at the top to high density at the bottom and document an internal splash in which the falling sphere may reverse its direction of motion (from falling, to rising, to falling again) as it penetrates a region of strong density transition. We present measurements of the sphere’s velocity and exhibit nonmonotonic sphere velocity profiles connecting the maximum and minimum terminal velocities, matching earlier measurements [J. Fluid Mech. 381, 175 (1999)], but further exhibit the new levitation phenomenon. We give a physical explanation of this motion which necessarily couples the sphere motion with the stratified fluid, and vice versa, and supplement this with a simplified, reduced mathematical model involving a nonlinear system of ordinary differential equations which captures the nonmonotonic transition and agrees with the measuredvelocity profiles at all depths except those in the vicinity of the sharp transition for which the model deviates from the measured speeds. We repeat the experiments adjusting the distance between the camera and falling sphere thereby reducing the optical blur associated with the change in optical refractive index associated with the strong density transition. By directly measuring the residual optical distortion with a center plane, vertical ruler, we exhibit that the measuredvelocity profile within the transition layer is strongly sensitive to the details of the measured optical distortion, and show subsequent improved agreement between the measurement and the model. Through direct measurement of the nonlinear mapping between physical and imaged coordinates we document measuredvelocity error trends which may occur from inaccurately accounting for this optical distortion. We suggest strategies for correcting this localized measurement detail generally.
Monodomain dynamics for rigid rod and platelet suspensions in strongly coupled coplanar linear flow and magnetic fields. II. Kinetic theory
Creators: name: Forest, M. Gregory
name: Sircar, Sarthok
name: Zhou, Ruhai
name: Wang, Qi
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: We establish reciprocity relations of the Doi-Hess kinetic theory for rigid rod macromolecular suspensions governed by the strong coupling among an excluded volume potential, linear flow, and a magnetic field. The relation provides a reduction of the flow and field driven Smoluchowski equation: from five parameters for coplanar linear flows and magnetic field, to two field parameters. The reduced model distinguishes flows with a rotational component, which map to simple shear (with rate parameter) subject to a transverse magnetic field (with strength parameter), and irrotational flows, for which the reduced model consists of a triaxial extensional flow (with two extensional rate parameters). We solve the Smoluchowski equation of the reduced model to explore: (i) the effect of introducing a coplanar magnetic field on each sheared monodomain attractor of the Doi-Hess kinetic theory and (ii) the coupling of coplanar extensional flow and magnetic fields.
Dynamics of probability density functions for decaying passive scalars in periodic velocity fields
Creators: name: Martinsen-Burrell, Neil
name: McLaughlin, Richard M.
name: Camassa, Roberto
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The probability density function (PDF) for a decaying passive scalar advected by a deterministic, periodic, incompressible fluid flow is numerically studied using a variety of random and coherent initial scalar fields. We establish the dynamic emergence at large Péclet numbers of a broad-tailed PDF for the scalar initialized with a Gaussian random measure, and further explore a rich parameter space involving scales of the initial scalar field and the geometry of the flow. We document that the dynamic transition of the PDF to a broad-tailed distribution is similar for shear flows and time-varying nonsheared flows with positive Lyapunov exponent, thereby showing that chaos in the particle trajectories is not essential to observe intermittent scalar signals. The role of the initial scalar field is carefully explored. The long-time PDF is sensitive to the scale of the initial data. For shear flows we show that heavy-tailed PDFs appear only when the initial field has sufficiently small-scale variation. We also connect geometric features of the scalar field with the shape of the PDFs. We document that the PDF is constructed by a subtle balance between spatial regions of strong and weak shear in conjunction with the presence of small-scale scalar variation within the weak shear regions. For cellular flows we document a lack of self-similarity in the PDFs when periodic time dependence is present, in contrast to the self-similar decay for time independent flow. Finally, we analyze the behavior of the PDFs for coherent initial fields and the parametric dependence of the variance decay rate on the Péclet number and the initial wavenumber of the scalar field.
Group Authentication for Drone Swarms
Creators: name: Aydin, Yucel
name: Kurt, Gunes Karabulur
name: Ozdemir, Enver
name: Yanikomeroglu, Halim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In parallel with the advances of aerial networks, the use of drones is quickly included in daily activities. According to the characteristics of the operations to be carried out using the drones, the need for simultaneous use of one or more drones has arisen. The use of a drone swarm is preferred rather than the use of a single drone to complete activities such as secure crowd monitoring systems, cargo delivery. Due to the limited airtime of the drones, new members may be included in the swarm, or there may be a unification of two or more drone swarms when needed. Authentication of the new drone that will take its place in the drone swarm and the rapid mutual-verification of two different swarms of drones are some of the security issues in the swarm structures. In this study, group authentication-based solutions have been put forward to solve the identified security issues. The proposed methods and 5G new radio (NR) authentication methods were compared in terms of time and a significant time difference was obtained. According to the 5G NR standard, it takes 22 ms for a user equipment (UE) to be verified by unified data management (UDM), while in the proposed method, this time varies according to the threshold value of the polynomial used and it is substantially lower than 22 ms for most threshold values.
description: Published in IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)
Additional file 1 of Dose error reduction software in medication safety risk management – optimising the smart infusion pump dosing limits in neonatal intensive care unit prior to implementation
Creators: name: Kuitunen, Sini
name: Kärkkäinen, Krista
name: Linden-Lahti, Carita
name: Schepel, Lotta
name: Holmström, Anna-Riia
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Additional file 1: Figure. A more detailed description of the abductive content analysis in Part 1B of the study.
Multiple magnetic transitions in the spin-$\frac12$ chain antiferromagnet SrCuTe2O6
Creators: name: Ahmed, N.
name: Tsirlin, A. A.
name: Nath, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using thermodynamic measurements and density-functional band-structure calculations, we explore magnetic behavior of SrCuTe2O6. Despite being a structural sibling of a three-dimensional frustrated system PbCuTe2O6, this spin-1/2 quantum magnet shows remarkably different low-temperature behavior. Above 7 K, magnetic susceptibility of SrCuTe2O6 follows the spin-chain model with the antiferromagnetic intrachain coupling of J = 49.3 K. We ascribe this quasi-one-dimensional behavior to the leading third-neighbor coupling that involves a weakly bent Cu--O......O--Cu superexchange pathway with a short O.....O contact of 2.79 Å. Below 5 K, SrCuTe2O6 undergoes two consecutive magnetic transitions that may be triggered by the frustrated nature of interchain couplings. Field dependence of the magnetic transitions (phase diagram) is reported.
description: 9 pages, 11 figures, 1 table
ESHITISHIDA NUQSONI BOʻLGAN BOLALARNI KASBGA YOʻNALTIRISHNING METODOLOGIK ASOSLARINI TAKOMILLASHTIRISH
Creators: name: Turgʻunboyeva, Zulxumor
name: Bekmirzayeva, Nigora
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada eshitishida nuqsoni boʻlgan bolalarni kasbga yoʻnaltirishning metodologik asoslarini takomillashtirish va chet el olimlarining  ushbu sohada olib borilgan ilmiy izlanishlari to’grisidagi fikrlari  yoritilgan.
Additional file 1 of Conceptualising specialist supportive clinical management (SSCM): current evidence and future directions
Creators: name: Kiely, Laura
name: Touyz, Stephen
name: Conti, Janet
name: Hay, Phillipa
Publisher: name: figshare
Year: 2022
Subjects: subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Additional file 1. Secondary Analysis.
(2293) Walter Thackeray
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Appendix S2 from A tropical arthropod unravels local and global environmental dependence of seasonal temperature-size response
Creators: name: Pequeno, Pedro Aurélio Costa Lima
name: Franklin, Elizabeth
name: Norton, Roy A.
name: Morais, José W. De
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Developmental Biology

description: Sensitivity analysis of results on Rostrozetes ovulum, and methods used in the comparative analysis on environmental dependence of the strength of the seasonal TSR
(2294) Alice Mary Thackeray
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Inference and Learning for Generative Capsule Models
Creators: name: Nazabal, Alfredo
name: Tsagkas, Nikolaos
name: Williams, Christopher K. I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Capsule networks (see e.g. Hinton et al., 2018) aim to encode knowledge of and reason about the relationship between an object and its parts. In this paper we specify a generative model for such data, and derive a variational algorithm for inferring the transformation of each model object in a scene, and the assignments of observed parts to the objects. We derive a learning algorithm for the object models, based on variational expectation maximization (Jordan et al., 1999). We also study an alternative inference algorithm based on the RANSAC method of Fischler and Bolles (1981). We apply these inference methods to (i) data generated from multiple geometric objects like squares and triangles ("constellations"), and (ii) data from a parts-based model of faces. Recent work by Kosiorek et al. (2019) has used amortized inference via stacked capsule autoencoders (SCAEs) to tackle this problem -- our results show that we significantly outperform them where we can make comparisons (on the constellations data).
description: 31 pages, 6 figures. This paper extends our previous work (arxiv:2103.06676) by covering the learning of the models as well as inference. Paper accepted for publication in Neural Computation
(2295) George Edwin Thackeray
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(2289) Richard Reavely
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Additional file 2 of Using the Goal Attainment Scale adapted for depression to better understand treatment outcomes in patients with major depressive disorder switching to vortioxetine: a phase 4, single-arm, open-label, multicenter study
Creators: name: McCue, Maggie
name: Sarkey, Sara
name: Eramo, Anna
name: François, Clement
name: Parikh, Sagar V.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2: Supplementary Table 1. Correlations between goal scores and depressive symptoms, illness severity, and improvement [23]. Supplementary Table 2. Correlations between goal scores and Quality of Life (Q-LES-Q) [23]. Supplementary Table 3. Correlations between goal scores and cognitive performance/perceived deficit [23].
Actual and long-term population size in the different scenarios tested in the study. from Overestimation of the adaptive substitution rate in fluctuating populations.
Creators: name: Rousselle, Marjolaine
name: Mollion, Maeva
name: Benoit Nabholz
name: Bataillon, Thomas
name: Galtier, Nicolas
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Estimating the proportion of adaptive substitutions (α) is of primary importance to uncover the determinants of adaptation in comparative genomic studies. Several methods have been proposed to estimate α from patterns polymorphism and divergence in coding sequences. However, estimators of α can be biased when the underlying assumptions are not met. Here we focus on a potential source of bias, i.e. variation through time in the long-term population size (N) of the considered species. We show via simulations that ancient demographic fluctuations can generate severe overestimations of α, and this is irrespective of the recent population history.
Velocity fluctuations of initially stratified sedimenting spheres
Creators: name: Brenner, M. P.
name: Mucha, P. J.
name: Weitz, D. A.
name: Tee, Shang You
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The study of velocity fluctuations in the sedimentation of spheres is complicated by the time evolution of the underlying particle distribution, both at the microscale and in the bulk. We perform a series of experiments and simulations to isolate the effect of an initial, stable stratification in the particle concentration. The directly observed dependence of velocity fluctuations on stratification agrees with a previously obtained scaling theory.
Representing Social Networks as Dynamic Heterogeneous Graphs
Creators: name: Maleki, Negar
name: Padamanabhan, Balaji
name: Dutta, Kaushik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Graph representations for real-world social networks in the past have missed two important elements: the multiplexity of connections as well as representing time. To this end, in this paper, we present a new dynamic heterogeneous graph representation for social networks which includes time in every single component of the graph, i.e., nodes and edges, each of different types that captures heterogeneity. We illustrate the power of this representation by presenting four time-dependent queries and deep learning problems that cannot easily be handled in conventional homogeneous graph representations commonly used. As a proof of concept we present a detailed representation of a new social media platform (Steemit), which we use to illustrate both the dynamic querying capability as well as prediction tasks using graph neural networks (GNNs). The results illustrate the power of the dynamic heterogeneous graph representation to model social networks. Given that this is a relatively understudied area we also illustrate opportunities for future work in query optimization as well as new dynamic prediction tasks on heterogeneous graph structures.
Adaptive rate estimation in the extended McDonald-Kreitman framework. from Overestimation of the adaptive substitution rate in fluctuating populations.
Creators: name: Rousselle, Marjolaine
name: Mollion, Maeva
name: Benoit Nabholz
name: Bataillon, Thomas
name: Galtier, Nicolas
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Estimating the proportion of adaptive substitutions (α) is of primary importance to uncover the determinants of adaptation in comparative genomic studies. Several methods have been proposed to estimate α from patterns polymorphism and divergence in coding sequences. However, estimators of α can be biased when the underlying assumptions are not met. Here we focus on a potential source of bias, i.e. variation through time in the long-term population size (N) of the considered species. We show via simulations that ancient demographic fluctuations can generate severe overestimations of α, and this is irrespective of the recent population history.
(2290) James Thackeray
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Analysis of passive scalar advection in parallel shear flows: Sorting of modes at intermediate time scales
Creators: name: McLaughlin, Richard M.
name: Camassa, Roberto
name: Viotti, Claudio
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: The time evolution of a passive scalar advected by parallel shear flows is studied for a class of rapidly varying initial data. Such situations are of practical importance in a wide range of applications from microfluidics to geophysics. In these contexts, it is well-known that the long-time evolution of the tracer concentration is governed by Taylor’s asymptotic theory of dispersion. In contrast, we focus here on the evolution of the tracer at intermediate time scales. We show how intermediate regimes can be identified before Taylor’s, and in particular, how the Taylor regime can be delayed indefinitely by properly manufactured initial data. A complete characterization of the sorting of these time scales and their associated spatial structures is presented. These analytical predictions are compared with highly resolved numerical simulations. Specifically, this comparison is carried out for the case of periodic variations in the streamwise direction on the short scale with envelope modulations on the long scales, and show how this structure can lead to “anomalously” diffusive transients in the evolution of the scalar onto the ultimate regime governed by Taylor dispersion. Mathematically, the occurrence of these transients can be viewed as a competition in the asymptotic dominance between large Péclet (Pe) numbers and the long/short scale aspect ratios ( L Vel / L Tracer ≡ k ) , two independent nondimensional parameters of the problem. We provide analytical predictions of the associated time scales by a modal analysis of the eigenvalue problem arising in the separation of variables of the governing advection-diffusion equation. The anomalous time scale in the asymptotic limit of large k Pe is derived for the short scale periodic structure of the scalar’s initial data, for both exactly solvable cases and in general with WKBJ analysis. In particular, the exactly solvable sawtooth flow is especially important in that it provides a short cut to the exact solution to the eigenvalue problem for the physically relevant vanishing Neumann boundary conditions in linear-shear channel flow. We show that the life of the corresponding modes at large Pe for this case is shorter than the ones arising from shear free zones in the fluid’s interior. A WKBJ study of the latter modes provides a longer intermediate time evolution. This part of the analysis is technical, as the corresponding spectrum is dominated by asymptotically coalescing turning points in the limit of large Pe numbers. When large scale initial data components are present, the transient regime of the WKBJ (anomalous) modes evolves into one governed by Taylor dispersion. This is studied by a regular perturbation expansion of the spectrum in the small wavenumber regimes.
МОЛИЯВИЙ УНДИРУВЛАР ТУШУНЧАСИ, ТУРЛАРИ ВА МАЗМУН-МОҲИЯТИ
Creators: name: Мамарасулов, Достон
Publisher: name: Zenodo
Year: 2023

description: Молиявий ундирувларни амалга ошириш жараёнида қарздорга нисбатан кўриладиган чоралар, хусусан, қарздорнинг мол-мулкини хатлаш ва уни реализация қилиш йўли билан ундирувни қарздорнинг мол-мулкига қаратишнинг самарадорлиги мавзуси суд-ҳуқуқ ислоҳотларини амалга ошириш жараёнида муҳокама қилинаётган муҳим муаммолардан биридир. Шу боисдан, мазкур мақолада муаллиф томонидан молиявий ундирувлар тушунчаси, турлари ва мазмун-моҳияти илмий-назарий жиҳатдан атрофлича тадқиқ этилиб, таклиф ва тавсиялар берилган.
SLIM command lines for the main demographic scenarios (stable Ne, temperate species and alpine species with a soft bottleneck) and DFE-A. from Overestimation of the adaptive substitution rate in fluctuating populations.
Creators: name: Rousselle, Marjolaine
name: Mollion, Maeva
name: Benoit Nabholz
name: Bataillon, Thomas
name: Galtier, Nicolas
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences

description: All the simulations have been rescaled by a factor ten after checking that it will not affect the result, for time saving considerations
Additional file 1 of Using the Goal Attainment Scale adapted for depression to better understand treatment outcomes in patients with major depressive disorder switching to vortioxetine: a phase 4, single-arm, open-label, multicenter study
Creators: name: McCue, Maggie
name: Sarkey, Sara
name: Eramo, Anna
name: François, Clement
name: Parikh, Sagar V.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Supplementary Figure 1. GAS-D score formula. Supplementary Figure 2. Change in overall Q-LES-Q scores from baseline. Supplementary Figure 3. Change in LEAPS score from baseline.
Actual and long-term population size in the different scenarios tested in the study. from Overestimation of the adaptive substitution rate in fluctuating populations
Creators: name: Rousselle, Marjolaine
name: Mollion, Maeva
name: Benoit Nabholz
name: Bataillon, Thomas
name: Galtier, Nicolas
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Estimating the proportion of adaptive substitutions (α) is of primary importance to uncover the determinants of adaptation in comparative genomic studies. Several methods have been proposed to estimate α from patterns polymorphism and divergence in coding sequences. However, estimators of α can be biased when the underlying assumptions are not met. Here we focus on a potential source of bias, i.e. variation through time in the long-term population size (N) of the considered species. We show via simulations that ancient demographic fluctuations can generate severe overestimations of α, and this irrespective of the recent population history.
Retention and entrainment effects: Experiments and theory for porous spheres settling in sharply stratified fluids
Creators: name: White, B. L.
name: Camassa, R.
name: McLaughlin, R. M.
name: Khatri, S.
name: Yu, S.
name: Prairie, J. C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: We present an experimental study of single porous spheres settling in a near two-layer ambient density fluid. Data are compared with a first-principle model based on diffusive processes. The model correctly predicts accelerations of the sphere but does not capture the retention time at the density transition quantitatively. Entrainment of lighter fluid through a shell encapsulating the sphere is included in this model empirically. With this parametrization, which exhibits a power law dependence on Reynolds numbers, retention times are accurately captured. Extrapolating from our experimental data, model predictions are presented.
OLIY TA'LIM MUASSASALARI RAQOBATBARDOSHLIGINI OSHIRISHNING MARKETING STRATEGIYALARI.
Creators: name: Maxmudov, Faxriddin
Publisher: name: Zenodo
Year: 2024

description: Mazkur maqolada oliy ta’lim muassasalarida raqobat sharoitida uning raqobatbardoshligini oshirishning marketing strategiyalari ishlab chiqilgan va tavsiyalar berilgan. Ilmiy maqolada oliy ta’lim tizimida marketingning o’rni, oliy ta’lim raqobatbardoshligini oshirishda marketing strategiyalarini ishlab chiqish va ularni amalga oshirish yo’llari ishlab chiqilgan. Oliy ta’lim muassasalarining raqobatbardoshligiga ta’sir ko’rsatuvchi omillar ilmiy tadqiqot manbalarini o’rganish asosida bir necha tasniflarga bo’linib o’rganilgan. Toshkent amaliy fanlar universiteti faoliyati va raqobatbardoshlik omillari statistik tahlil qilingan. Tahlil natijalariga asoslangan holda oli ta’lim muassasalarining raqobatbardoshligini ta’minlash imkonini beradigan sifatni boshqarish bo’yicha bir nechta tavsiyalar berilgan.
The Conversion of CESR to Operate as the Test Accelerator, CesrTA, Part 2: Vacuum Modifications
Creators: name: Billing, M. G.
name: Li, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Cornell's electron/positron storage ring (CESR) was modified over a series of accelerator shutdowns beginning in May 2008, which substantially improves its capability for research and development for particle accelerators. CESR's energy span from 1.8 to 5.6 GeV with both electrons and positrons makes it ideal for the study of a wide spectrum of accelerator physics issues and instrumentation related to present light sources and future lepton damping rings. Additionally a number of these are also relevant for the beam physics of proton accelerators. This paper, the second in a series of four, discusses the modifications of the vacuum system necessary for the conversion of CESR to the test accelerator, CesrTA, enhanced to study such subjects as low emittance tuning methods, electron cloud (EC) effects, intra-beam scattering, fast ion instabilities as well as general improvements to beam instrumentation. A separate paper describes the vacuum system modifications of the superconducting wigglers to accommodate the diagnostic instrumentation for the study of EC behavior within wigglers. While the initial studies of CesrTA focussed on questions related to the International Linear Collider (ILC) damping ring design, CesrTA is a very flexible storage ring, capable of studying a wide range of accelerator physics and instrumentation questions.
Supporting Multi-Cloud in Serverless Computing
Creators: name: Zhao, Haidong
name: Benomar, Zakaria
name: Pfandzelter, Tobias
name: Georgantas, Nikolaos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Serverless computing is a widely adopted cloud execution model composed of Function-as-a-Service (FaaS) and Backend-as-a-Service (BaaS) offerings. The increased level of abstraction makes vendor lock-in inherent to serverless computing, raising more concerns than previous cloud paradigms. Multi-cloud serverless is a promising emerging approach against vendor lock-in, yet multiple challenges must be overcome to tap its potential. First, we need to be aware of both the performance and cost of each FaaS provider. Second, a multi-cloud architecture must be proposed before deploying a multi-cloud workflow. Domain-specific serverless offerings must then be integrated into the multi-cloud architecture to improve performance or save costs. Moreover, dealing with serverless offerings from multiple providers is challenging. Finally, we require workload portability support for serverless multi-cloud. In this paper, we present a multi-cloud library for cross-serverless offerings. We develop the End Analysis System (EAS) to support comparison among public FaaS providers in terms of performance and cost. Moreover, we design proof-of-concept multi-cloud architectures with domain-specific serverless offerings to alleviate problems such as data gravity. Finally, we deploy workloads on these architectures to evaluate several public FaaS offerings.
description: Accepted for the 15th IEEE/ACM International Conference on Utility and Cloud Computing Companion (UCC'22 Companion)
Evolutionary Divergence in Thermal Sensitivity and Diapause of Field and Laboratory Populations of Manduca sexta
Creators: name: Nagle, Annemarie
name: Kingsolver, Joel G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The tobacco hornworm Manduca sexta has been an important model system in insect biology for more than half a century. Here we report the evolutionary divergence in thermal sensitivity and diapause initiation between field and laboratory populations that were separated for more than 35 yr (>240 laboratory generations) and that are descendants from the same field populations in central North Carolina. At intermediate rearing temperatures (20 degrees-25 degrees C), mean body size was significantly larger and development time significantly faster in the laboratory than in the field populations. At higher temperatures (30 degrees -35 degrees C), these mean differences between populations were reduced or eliminated, and larval survival at 35 degrees C was significantly lower in the laboratory population than in the field population. F(1) crosses had survival and development time to wandering similar to the field population times at both 25 degrees and 35 degrees C; body mass at wandering for F(1) crosses was intermediate compared with that of the field and laboratory populations. Comparisons with earlier field and laboratory studies suggest evolutionary reductions in thermal tolerance and performance at high temperatures in the laboratory population. The critical photoperiod initiating diapause in field populations in North Carolina did not change detectably between the 1960s and 2005. In contrast, the laboratory population has evolved a reduced tendency to diapause under short-day conditions, relative to the field population.
Ontogeny and Individual Variation in the Adrenocortical Response of Zebra Finch ( Taeniopygia guttata ) Nestlings
Creators: name: Williams, Tony D.
name: Salvante, Katrina G.
name: Wagner, Emily
name: Wada, Haruka
name: Breuner, Creagh W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Abstract Numerous studies indicate interspecies variation in the ontogeny of the adrenocortical response in birds; however, little is known about the extent of interindividual variation in avian young. Toward this end, we examined the ontogeny and interindividual variation in the adrenocortical response in zebra finch (Taeniopygia guttata) nestlings. We measured baseline and stress‐induced total (bound and free) corticosterone, corticosteroid binding globulin capacity, and resulting estimated free corticosterone levels in nestlings of four different ages (days 5, 10, 16, and 21). In addition, we investigated the potential correlates of interindividual variation (brood size and mass). Nestlings at days 5 and 10 post‐hatching showed no significant increase in total or free corticosterone levels in response to a standardized handling stress, whereas an adult‐like stress response was seen by day 16 post‐hatching. There was large interindividual (fivefold) variation in both baseline and stress‐induced corticos...
Using Word Embedding and Convolution Neural Network for Bug Triaging by Considering Design Flaws
Creators: name: Sepahvand, Reza
name: Akbari, Reza
name: Jamasb, Behnaz
name: Hashemi, Sattar
name: Boushehrian, Omid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Resolving bugs in the maintenance phase of software is a complicated task. Bug assignment is one of the main tasks for resolving bugs. Some Bugs cannot be fixed properly without making design decisions and have to be assigned to designers, rather than programmers, to avoid emerging bad smells that may cause subsequent bug reports. Hence, it is important to refer some bugs to the designer to check the possible design flaws. Based on our best knowledge, there are a few works that have considered referring bugs to designers. Hence, this issue is considered in this work. In this paper, a dataset is created, and a CNN-based model is proposed to predict the need for assigning a bug to a designer by learning the peculiarities of bug reports effective in creating bad smells in the code. The features of each bug are extracted from CNN based on its textual features, such as a summary and description. The number of bad samples added to it in the fixing process using the PMD tool determines the bug tag. The summary and description of the new bug are given to the model and the model predicts the need to refer to the designer. The accuracy of 75% (or more) was achieved for datasets with a sufficient number of samples for deep learning-based model training. A model is proposed to predict bug referrals to the designer. The efficiency of the model in predicting referrals to the designer at the time of receiving the bug report was demonstrated by testing the model on 10 projects.
Continuous quantization procedure in quasiclassical scattering: Application to atom-Morse oscillator collisions
Creators: name: Ramaswamy, Ramakrishna
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: The recently developed method of continuous quantization is applied to the atom-Morse oscillator collinear collision problem. This geometrical formulation of the classical scattering process allows for the extraction of transition probabilities for classically forbidden processes with reasonable accuracy. The accuracy of this method over the simple (histogram) quasi-classical procedure is demonstrated for two-model systems.