cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hard discs under steady shear: comparison of Brownian dynamics simulations and mode coupling theory
Creators: name: Henrich, O.
name: Weysser, F.
name: Cates, M. E.
name: Fuchs, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Brownian dynamics simulations of bidisperse hard discs moving in two dimensions in a given steady and homogeneous shear flow are presented close to and above the glasstransition density. The stationary structure functions and stresses of shear-melted glass are compared quantitatively to parameter-free numerical calculations of monodisperse hard discs using mode coupling theory within the integration through transients framework. Theory qualitatively explains the properties of the yielding glass but quantitatively overestimatesthe shear-driven stresses and structural anisotropies.
description: 1. The original Phil. Trans. R. Soc. contains an error in the caption of the y-axes of the upper left panel in figure 9: There's a factor \dot{\gamma} missing in the denominator
Energy-resolved Photoconductivity Mapping in a Monolayer-bilayer WSe2 Lateral Heterostructure
Creators: name: Chu, Zhaodong
name: Han, Ali
name: Lei, Chao
name: Li, Peng
name: Wannlund, David
name: Wu, Di
name: Herrera, Kevin
name: Zhang, Xixiang
name: MacDonald, Allan H.
name: Li, Xiaoqin
name: Li, Lain-Jong
name: Lai, Keji
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Van der Waals materials
monolayer-bilayer interface
edge states
microwave mpedance microscopy
photoconductivity imaging

description: Vertical and lateral heterostructures of van der Waals materials provide tremendous flexibility for band structure engineering. Since electronic bands are sensitively affected by defects, strain, and interlayer coupling, the edge and heterojunction of these two-dimensional (2D) systems may exhibit novel physical properties, which can be fully revealed only by spatially resolved probes. Here, we report the spatial mapping of photoconductivity in a monolayer-bilayer WSe2 lateral heterostructure under multiple excitation lasers. As the photon energy increases, the light-induced conductivity detected by microwave impedance microscopy first appears along the hetero-interface and bilayer edge, then along the monolayer edge, inside the bilayer area, and finally in the interior of the monolayer region. The sequential emergence of mobile carriers in different sections of the sample is consistent with the theoretical calculation of local energy gaps. Quantitative analysis of the microscopy and transport data also reveals the linear dependence of photoconductivity on the laser intensity and the influence of interlayer coupling on carrier recombination. Combining theoretical modeling, atomic scale imaging, mesoscale impedance microscopy, and device-level characterization, our work suggests an exciting perspective to control the intrinsic band-gap variation in 2D heterostructures down to the few-nanometer regime.
Designing a Framework for Digital KYC Processes Built on Blockchain-Based Self-Sovereign Identity
Creators: name: Schlatt, Vincent
name: Sedlmeir, Johannes
name: Feulner, Simon
name: Urbach, Nils
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Cryptography and Security (cs.CR)
subject: General Economics (econ.GN)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business
subject: H.4

description: Know your customer (KYC) processes place a great burden on banks, because they are costly, inefficient, and inconvenient for customers. While blockchain technology is often mentioned as a potential solution, it is not clear how to use the technology's advantages without violating data protection regulations and customer privacy. We demonstrate how blockchain-based self-sovereign identity (SSI) can solve the challenges of KYC. We follow a rigorous design science research approach to create a framework that utilizes SSI in the KYC process, deriving nascent design principles that theorize on blockchain's role for SSI.
Spherical symmetry of generalized EYMH fields
Creators: name: Kunzle, H. P.
name: Oliynyk, Todd A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The possible actions of symmetry groups on generalized Higgs fields coupled to an Einstein-Yang-Mills field are studied with differential geometrical techniques involving principal and associated bundles. A classification of conjugacy classes of these actions and the form of the corresponding invariant Einstein-Yang-Mills-Higgs (EYMH) fields is obtained and then applied to the case of static spherically symmetric fields over four dimensional space-time. The representations of the gauge group for which spherically symmetric Higgs fields exist are identified and the set of all field equations for the independent functions that describe these fields is analyzed and the corresponding ordinary system of differential equations is derived and shown to be consistent.
description: May differ slightly from the published version
Electron transport through honeycomb lattice ribbons with armchair edges
Creators: name: Maiti, Santanu K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We address electron transport in honeycomb lattice ribbons with armchair edges attached to two semi-infinite one-dimensional metallic electrodes within the tight-binding framework. Here we present numerically the conductance-energy and current-voltage characteristics as functions of the length and width of the ribbons. Our theoretical results predict that for a ribbon with much smaller length and width, so-called a nanoribbon, a gap in the conductance spectrum appears across the energy E=0. While, this gap decreases gradually with the increase of the size of the ribbon, and eventually it almost vanishes. This reveals a transformation from the semiconducting to the conducting material, and it becomes much more clearly visible from our presented current-voltage characteristics.
description: 8 pages, 6 figures
Long-term variability of the optical spectra of NGC 4151: II. Evolution of the broad Ha and Hb emission-line profiles
Creators: name: Shapovalova, A. I.
name: Popovic, L. C.
name: Burenkov, A. N.
name: Chavushyan, V. H.
name: Ilic, D.
name: Kovacevic, A.
name: Bochkarev, N. G.
name: Leon-Tavares, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Results of the long-term (11 years, from 1996 to 2006) H$α$ and H$β$ line variations of the active galactic nucleus of NGC 4151 are presented. High quality spectra (S/N>50 and R~8A) of H$α$ and H$β$ were investigated. We analyzed line profile variations during monitoring period. Comparing the line profiles of H$α$ and H$β$, we studied different details (bumps, absorption features) in the line profiles. The variations of the different H$α$ and H$β$ line profile segments have been investigated. Also, we analyzed the Balmer decrement for whole line and for line segments. We found that the line profiles were strongly changing during the monitoring period, showing blue and red asymmetries. This indicates a complex BLR geometry of NGC 4151 with, at least, three kinematically distinct regions: one that contributes to the blue line wing, one to the line core and one to the red line wing. Such variation can be caused by an accelerating outflow starting very close to the black hole, where the red part may come from the region {closer to the black hole than the blue part, which is coming} from the region having the highest outflow velocities. Taking into account the fact that the BLR of NGC 4151 has a complex geometry (probably affected by an outflow) and that a portion of the broad line emission seems to have not a pure photoionization origin, one can ask the question whether the study of the BLR by reverberation mapping may be valid in the case of this galaxy.
description: 24 pages, 18 figures, accepted for publications in A&A
A Crowdsourced Contact Tracing Model to Detect COVID-19 Patients using Smartphones
Creators: name: Islam, Linta
name: Rahman, Mafizur
name: Ahmad, Nabila
name: Sharmin, Tasnia
name: Sorna, Jannatul Ferdous
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Millions of people have died all across the world because of the COVID-19 outbreak. Researchers worldwide are working together and facing many challenges to bring out the proper vaccines to prevent this infectious virus. Therefore, in this study, a system has been designed which will be adequate to stop the outbreak of COVID-19 by spreading awareness of the COVID-19 infected patient situated area. The model has been formulated for Location base COVID-19 patient identification using mobile crowdsourcing. In this system, the government will update the information about inflected COVID-19 patients. It will notify other users in the vulnerable area to stay at 6 feet or 1.8-meter distance to remain safe. We utilized the Haversine formula and circle formula to generate the unsafe area. Ten thousand valid information has been collected to support the results of this research. The algorithm is tested for 10 test cases every time, and the datasets are increased by 1000. The run time of that algorithm is growing linearly. Thus, we can say that the proposed algorithm can run in polynomial time. The algorithm's correctness is also being tested where it is found that the proposed algorithm is correct and efficient. We also implement the system, and the application is evaluated by taking feedback from users. Thus, people can use our system to keep themselves in a safe area and decrease COVID patients' rate.
Asymptotics and quantization for a mean-field equation of higher order
Creators: name: Martinazzi, Luca
name: Petrache, Mircea
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 35J40

description: Given a regular bounded domain $Ω\subset\R{2m}$, we describe the limiting behavior of sequences of solutions to the mean field equation of order $2m$, $m\geq 1$, $$(-Δ)^m u=ρ\frac{e^{2mu}}{\int_Ωe^{2mu}dx}\quad\text{in}Ω,$$ under the Dirichlet boundary condition and the bound $0
description: 21 pages
Accurate and Honest Approximation of Correlated Qubit Noise
Creators: name: Setiawan, F.
name: Gramolin, Alexander V.
name: Matekole, Elisha S.
name: Krovi, Hari
name: Taylor, Jacob M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Accurate modeling of noise in realistic quantum processors is critical for constructing fault-tolerant quantum computers. While a full simulation of actual noisy quantum circuits provides information about correlated noise among all qubits and is therefore accurate, it is, however, computationally expensive as it requires resources that grow exponentially with the number of qubits. We propose an efficient systematic construction of approximate noise channels, where their accuracy can be enhanced by incorporating noise components with higher qubit-qubit correlation degree. To formulate such approximate channels, we first present a method, dubbed the cluster expansion approach, to decompose the Lindbladian generator of an actual noise channel into components based on interqubit correlation degree. We generate a $k$-th order approximate noise channel by truncating the cluster expansion and incorporating noise components with correlations up to the $k$-th degree. We require that the approximate noise channels must be accurate and also ``honest", i.e., the actual errors are not underestimated in our physical models. As an example application, we apply our method to model noise in a three-qubit quantum processor that stabilizes a [[2,0,2]] codeword, which is one of the four Bell states. We find that, for realistic noise strength typical for fixed-frequency superconducting qubits coupled via always-on static interactions, correlated noise beyond two-qubit correlation can significantly affect the code simulation accuracy. Since our approach provides a systematic characterization of multi-qubit noise correlations, it enables the potential for accurate, honest and scalable approximations to simulate large numbers of qubits from full modeling or experimental characterizations of small enough quantum subsystems, which are efficient yet still retain essential noise features of the entire device.
description: 13 pages + 8 pages of Appendix, 11 figures
Spiral structure of the galactic disk and its influence on the rotational velocity curve
Creators: name: Vukcevic, Miroslava
name: Zekovic, Vladimir
name: Radeta, Marko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The most spiral galaxies have a flat rotational velocity curve, according to the different observational techniques used in several wavelengths domain. In this work, we show that non-linear terms are able to balance the dispersive effect of the wave, thus reviving the observed rotational curve profiles without inclusion of any other but baryonic matter concentrated in the bulge and disk. In order to prove that the considered model is able to restore a flat rotational curve, Milky Way has been chosen as the best mapped galaxy to apply on. Using the gravitational N-body simulations with up to $10^7$ particles, we test this dynamical model in the case of the Milky Way with two different approaches. Within the direct approach, as an input condition in the simulation runs we set the spiral surface density distribution which is previously obtained as an explicit solution to non-linear Schrödinger equation (instead of a widely used exponential disk approximation). In the evolutionary approach, we initialize the runs with different initial mass and rotational velocity distributions, in order to capture the natural formation of spiral arms, and to determine their role in the disk evolution. In both cases we are able to reproduce the stable and non-expanding disk structures at the simulation end times of $\sim10^9$ years, with no halo inclusion. Although the given model doesn't take into account the velocity dispersion of stars and finite disk thickness, the results presented here still imply that non-linear effects can significantly alter the amount of dark matter which is required to keep the galactic disk in stable configuration.
description: Accepted for publication in Astronomische Nachrichten. 6 pages, 3 figures
Virus discovery, dynamics, and disease in a wild Drosophila community
Creators: name: Wallace, Megan A.
Publisher: name: The University of Edinburgh
Year: 2021
Subjects: Drosophila melanogaster
Drosophila
wild viruses
insect-vectored viruses
metagenomic sequencing

description: The fruit fly Drosophila melanogaster remains a key model system for the study of insect-virus interactions. Its tractable life history and associated genetic toolkit have aided in the discovery of many of the key invertebrate immune defences against viruses. Recent metagenomic sequencing studies have identified over 130 naturally-occurring viruses of the Drosophilidae. This could enable the study of insect-virus ecological and evolutionary dynamics in this native multi-host, multi-virus community. In particular, the use of naturally-occurring host-virus combinations allows the study of ‘typical’ wild co-evolutionary dynamics between insects and their viruses, which might help us to understand the evolution of insect-vectored viruses with economic and public health impacts. However, proper parameterisation of these models of insect-virus co-evolution requires data from long-term studies of wild host-virus communities, which do not currently exist. In this thesis, I make the first attempt to quantify the dynamics of wild Drosophilid virus communities at both local, and continent-wide scales. I begin by using metagenomic sequencing to describe the viruses present in populations of Drosophila in South-east Scotland, identifying 17 new RNA viruses. I characterise the host range of 41 new and previously described Drosophila viruses in this system, finding that over 90% of these viruses infect multiple host species. I then examine how ten Drosophila viruses vary in prevalence in the wild using repeated, spatially and temporally structured sampling of a total of 2227 flies of 15 species, over three years. I find that prevalence varies between viruses, and within viruses, can vary across host species, and collecting season. Co-infection is not a rarity in this system, as over 30% of flies are infected with multiple viruses. Expanding my spatial scale of analysis, I then characterise patterns of Drosophila melanogaster DNA virus prevalence and genetic diversity across Europe. I find that DNA viruses show varying levels of diversity, and large-scale spatiotemporal predictability. Finally, I experimentally examine the ability of Drosophila viruses to transmit across species, and quantify their impact on host fitness. I find that some Drosophila viruses can readily transmit across species without the need for systemic injection. I identify four Drosophila viruses which significantly reduce host lifespan, and three which significantly reduce offspring production, indicating that viral infection may be a substantial fitness burden on wild flies. Together, these data increase and demonstrate the utility of the Drosophila model for community-level studies of host-virus interactions.
An experimental route to spatiotemporal chaos in an extended 1D oscillators array
Creators: name: Miranda, M. A.
name: Burguete, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We report experimental evidence of the route to spatiotemporal chaos in a large 1D-array of hotspots in a thermoconvective system. Increasing the driving force, a stationary cellular pattern becomes unstable towards a mixed pattern of irregular clusters which consist of time-dependent localized patterns of variable spatiotemporal coherence. These irregular clusters coexist with the basic cellular pattern. The Fourier spectra corresponding to this synchronization transition reveals the weak coupling of a resonant triad. This pattern saturates with the formation of a unique domain of great spatiotemporal coherence. As we further increase the driving force, a supercritical bifurcation to a spatiotemporal beating regime takes place. The new pattern is characterized by the presence of two stationary clusters with a characteristic zig-zag geometry. The Fourier analysis reveals a stronger coupling and enables to find out that this beating phenomena is produced by the splitting of the fundamental spatiotemporal frequencies in a narrow band. Both secondary instabilities are phase-like synchronization transitions with global and absolute character. Far beyond this threshold, a new instability takes place when the system is not able to sustain the spatial frequency splitting, although the temporal beating remains inside these domains. These experimental results may support the understanding of other systems in nature undergoing similar clustering processes.
description: 12 pages, 13 figures
Hardy's novels : a study of changing vision
Creators: name: Egan, Susanna
Publisher: name: University of British Columbia
Year: 2011

description: Hardy's novels draw on his knowledge of rural life in the nineteenth century; the effects of the agricultural depression form part of his material. Similarly, Darwinian thought affects his response to man and nature. Neither the subject-matter nor the philosophy, however, accounts for Hardy's changing attitude to his heroes and heroines who face consistently similar predicaments. This thesis accounts for such change in terms of Hardy's recognition that the old-world values of community life were inadequate for modern needs. Accordingly, he taught himself to accept the individual, even when he finds himself outside the established order, as the spearhead of moral improvement. Hardy derived a sense of security from the rural way of life portrayed in his early novels. Ancient customs are perpetuated in closely-knit communities. Work defines purpose. True love is rewarded. Life is peaceful and harmonious. Hardy acknowledges a possible source of danger in passivity of temperament and in the social pretensions of his women, but these are only possible dangers and the idyll triumphs. In his middle novels, Hardy pays more attention to the changes that were taking place around him, and he reevaluates the strength and worth of the old-world values in the light of more modern alternatives. These novels are described as experimental because Hardy’s attitude to the new social orders and their values is ambivalent. Here, however, and in three major late novels, Hardy describes the rural way of life as benighted and inadequate, unable to survive in the face of change. Consistently now a realistic ending brings defeat to the rustic hero and heroine. But in contrast to his admission of defeat for the old communities, Hardy learns to value the worth of the individual who flouts convention and community ties and evolves his own purposes in life. In early novels these men are the anti-heroes. In his last novels, Hardy studies them more closely. His antipathy gives way to admiration, and the anti-hero of his first novels, who stands outside the settled community, becomes the hero of his last.
The Benefits of Edge Computing in Healthcare, Smart Cities, and IoT
Creators: name: Dave, Rushit
name: Seliya, Naeem
name: Siddiqui, Nyle
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Recent advancements in technology now allow for the generation of massive quantities of data. There is a growing need to transmit this data faster and more securely such that it cannot be accessed by malicious individuals. Edge computing has emerged in previous research as a method capable of improving data transmission times and security before the data ends up in the cloud. Edge computing has an impressive transmission speed based on fifth generation (5G) communication which transmits data with low latency and high bandwidth. While edge computing is sufficient to extract important features from the raw data to prevent large amounts of data requiring excessive bandwidth to be transmitted, cloud computing is used for the computational processes required for developing algorithms and modeling the data. Edge computing also improves the quality of the user experience by saving time and integrating quality of life (QoL) features. QoL features are important for the healthcare sector by helping to provide real-time feedback of data produced by healthcare devices back to patients for a faster recovery. Edge computing has better energy efficiency, can reduce the electricity cost, and in turn help people reduce their living expenses. This paper will take a detailed look into edge computing applications around Internet of Things (IoT) devices, smart city infrastructure, and benefits to healthcare.
Stark tuning of the charge states of a two-donor molecule in silicon
Creators: name: Rahman, Rajib
name: Park, Seung H.
name: Klimeck, Gerhard
name: Hollenberg, Lloyd C. L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Gate control of phosphorus donor based charge qubits in Si is investigated using a tight-binding approach. Excited molecular states of P2+ are found to impose limits on the allowed donor separations and operating gate voltages. The effects of surface (S) and barrier (B) gates are analyzed in various voltage regimes with respect to the quantum confined states of the whole device. Effects such as interface ionization, saturation of the tunnel coupling, sensitivity to donor and gate placement are also studied. It is found that realistic gate control is smooth for any donor separation, although at certain donor orientations the S and B gates may get switched in functionality. This paper outlines and analyzes the various issues that are of importance in practical control of such donor molecular systems.
description: 8 pages, 9 figures
Beyond Lorentzian symmetry
Creators: name: Grassie, Ross
Publisher: name: The University of Edinburgh
Year: 2021
Subjects: symmetry classification
Lorentzian symmetry
kinematical symmetry
super-Bargmann symmetry
kinematical Lie algebras

description: This thesis presents a framework in which to explore kinematical symmetries beyond the standard Lorentzian case. This framework consists of an algebraic classification, a geometric classification, and a derivation of the geometric properties required to define physical theories on the classified spacetime geometries. The work completed in substantiating this framework for kinematical, super-kinematical, and super-Bargmann symmetries constitutes the body of this thesis. To this end, the classification of kinematical Lie algebras in spatial dimension D = 3, as presented in [3,4], is reviewed; as is the classification of spatially-isotropic homogeneous spacetimes of [5]. The derivation of geometric properties such as the non-compactness of boosts, soldering forms and vielbeins, and the space of invariant affine connections is then presented. We move on to classify the N = 1 kinematical Lie superalgebras in three spatial dimensions, finding 43 isomorphism classes of Lie superalgebras. Once these algebras are determined, we classify the corresponding simply-connected homogeneous (4|4)-dimensional superspaces and show how the resulting 27 homogeneous superspaces may be related to one another via geometric limits. Finally, we turn our attention to generalised Bargmann superalgebras. In the present work, these will be the N = 1 and N = 2 super-extensions of the Bargmann and Newton-Hooke algebras, as well as the centrally-extended static kinematical Lie algebra, of which the former three all arise as deformations. Focussing solely on three spatial dimensions, we find 9 isomorphism classes in the N = 1 case, and we identify 22 branches of superalgebras in the N = 2 case.
Circular thin position for knots in the 3-sphere
Creators: name: Manjarrez-Gutierrez, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: A regular circle-valued Morse function on the knot complement C(K) = S^3\K is a function f from C(K) to S^1 which separates critical points and which behaves nicely in a neighborhood of the knot. Such a function induces a handle decomposition on the knot exterior E(K) = S^3\N (K), with the property that every regular level surface contains a Seifert surface for the knot. We rearrange the handles in such a way that the regular surfaces are as simple as possible. To make this precise the concept of circular width for E(K) is introduced. When E(K) is endowed with a handle decomposition which realizes the circular width we will say that the knot K is in circular thin position. We use this to show that many knots have more than one non-isotopic incompressible Seifert surface. We also analyze the behavior of the circular width under some knot operations.
description: 25 pages, 10 figures
Tidal star-planet interaction and its observed impact on stellar activity
Creators: name: Ilic, Nikoleta
name: Poppenhaeger, Katja
name: Hosseini, S. Marzieh
Publisher: name: Zenodo
Year: 2021

description: Tidal interaction between an exoplanet and its host star is a possible pathway to
 transfer angular momentum between the planetary orbit and the stellar spin. In cases
 where the planetary orbital period is shorter than the stellar rotation period, this may lead
 to angular momentum being transferred into the star's rotation. Observationally, detecting
 altered rotational states of single, cool field stars is challenging, as precise ages for such
 stars are rarely available. We present an empirical investigation of the rotation and
 magnetic activity of a sample of planet-hosting stars that are accompanied by wide stellar
 companions. Without needing knowledge about the absolute ages of the stars, we test for
 relative differences in activity and rotation of the planet hosts and their co-eval
 companions, using X-ray observations to measure the stellar activity levels. Employing
 three different tidal interaction models, we find that host stars with planets that are
 expected to tidally interact display elevated activity levels compared to their companion
 stars. We also find that those activity levels agree with the observed rotational periods for
 the host stars along the usual rotation-activity relationships, implying that the effect is
 indeed caused by a tidal interaction and not a purely magnetic interaction which would be
 expected to affect the stellar activity, but not necessarily the rotation.
Two-neutron halo structure and anti-halo effect in 31F
Creators: name: Masui, Hiroshi
name: Horiuchi, Wataru
name: Kimura, Masaaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences
subject: J.2
subject: 81V35

description: We perform a detailed analysis for the structure of 31F, which is a candidate of the halo nucleus. We calculate the radius and reaction cross-section using a three-body model of 29F+n+n and discuss how the competition between the neutron-pairing and the single-particle energy induces structural changes of 31F. The present analysis further clarifies a new aspect of the anti-halo efect that suppresses the halo structure.
description: 6 pages, 3 figures
A Milstein-type scheme without Levy area terms for SDEs driven by fractional Brownian motion
Creators: name: Deya, Aurélien
name: Neuenkirch, Andreas
name: Tindel, Samy
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H35 (Primary) 60H07, 60H10, 65C30 (Secondary)

description: In this article, we study the numerical approximation of stochastic differential equations driven by a multidimensional fractional Brownian motion (fBm) with Hurst parameter greater than 1/3. We introduce an implementable scheme for these equations, which is based on a second order Taylor expansion, where the usual Levy area terms are replaced by products of increments of the driving fBm. The convergence of our scheme is shown by means of a combination of rough paths techniques and error bounds for the discretisation of the Levy area terms.
Using creative play to stimulate digital reflective practice and double loop learning
Creators: name: Beckingham, Sue
Publisher: name: Edge Hill University
Year: 2020
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences
subject: Education
subject: 130313 Teacher Education and Professional Development of Educators

description: This was an invited talk at University of Sheffield #TELfest event. In this hands-on session we explored how Lego Serious Play can be used as a method to engage students (and staff) in a scaffolded approach to digital reflective practice. Participants contributed to an inclusive and immersive activity that stimulated shared discussions and the creation of personal digital artifacts using Padlet.
(SARS-CoV-2) COVID 19: Genomic surveillance and evaluation of the impact on the population speaker of indigenous language in Mexico
Creators: name: Carlos, Medel-Ramírez
name: Hilario, Medel-López
name: Jennifer, Lara-Mérida
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The importance of the working document is that it allows the analysis of information and cases associated with (SARS-CoV-2) COVID-19, based on the daily information generated by the Government of Mexico through the Secretariat of Health, responsible for the Epidemiological Surveillance System for Viral Respiratory Diseases (SVEERV). The information in the SVEERV is disseminated as open data, and the level of information is displayed at the municipal, state and national levels. On the other hand, the monitoring of the genomic surveillance of (SARS-CoV-2) COVID-19, through the identification of variants and mutations, is registered in the database of the Information System of the Global Initiative on Sharing All Influenza Data (GISAID) based in Germany. These two sources of information SVEERV and GISAID provide the information for the analysis of the impact of (SARS-CoV-2) COVID-19 on the population in Mexico. The first data source identifies information, at the national level, on patients according to age, sex, comorbidities and COVID-19 presence (SARS-CoV-2), among other characteristics. The data analysis is carried out by means of the design of an algorithm applying data mining techniques and methodology, to estimate the case fatality rate, positivity index and identify a typology according to the severity of the infection identified in patients who present a positive result. for (SARS-CoV-2) COVID-19. From the second data source, information is obtained worldwide on the new variants and mutations of COVID-19 (SARS-CoV-2), providing valuable information for timely genomic surveillance. This study analyzes the impact of (SARS-CoV-2) COVID-19 on the indigenous language-speaking population, it allows us to provide information, quickly and in a timely manner, to support the design of public policy on health.
description: 37 pages, 11 tables, 5 graphs
Holomorphic maps acting as Kobayashi isometries on a family of geodesics
Creators: name: Bracci, Filippo
name: Kosiński, Łukasz
name: Zwonek, Włodzimierz
Publisher: name: arXiv
Year: 2023
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Consider a holomorphic map $F: D \to G$ between two domains in ${\mathbb C}^N$. Let $\mathcal F$ denote a family of geodesics for the Kobayashi distance, such that $F$ acts as an isometry on each element of $\mathcal F$. This paper is dedicated to characterizing the scenarios in which the aforementioned condition implies that $F$ is a biholomorphism. Specifically, we establish this when $D$ is a complete hyperbolic domain, and $\mathcal F$ comprises all geodesic segments originating from a specific point. Another case is when $D$ and $G$ are $C^{2+α}$-smooth bounded pseudoconvex domains, and $\mathcal F$ consists of all geodesic rays converging at a designated boundary point of $D$. Furthermore, we provide examples to demonstrate that these assumptions are essentially optimal.
description: final version
On the Thermal History of Calculable Gauge Mediation
Creators: name: Katz, Andrey
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Many messenger models with realistic gaugino masses are based on meta-stable vacua. In this work we study the thermal history of some of these models. Analyzing R-symmetric models, we point out that while some of the known messenger models clearly prefer the supersymmetric vacuum, there is a vast class of models where the answer depends on the initial conditions. Along with the vacuum at the origin, the high temperature thermal potential also possesses a local minimum far away from the origin. This vacuum has no analog at zero temperature. The first order phase transition from this vacuum into the supersymmetric vacuum is parametrically suppressed, and the theory, starting from that vacuum, is likely to evolve to the desired gauge-mediation vacuum. We also comment on the thermal evolution of models without R-symmetry.
description: 22 pages. V2: Comments on the SM effects added. Minor corrections. Reference added. Valuable discussion with S. Abel, J. Jaeckel and V. Khoze acknowledged. V3: Types of EOGM explicitly defined in the introduction. Discussions about the phase transitions expanded. Typo corrected. Journal version
A surface-renewal model for constant flux cross-flow microfiltration
Creators: name: Jiang, Shaopeng
name: Chatterjee, Siddharth G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A mathematical model using classical cake-filtration theory and the surface-renewal concept is formulated for describing constant flux, cross-flow microfiltration (CFMF). The model provides explicit analytical expressions for the transmembrane pressure drop (TMP) and cake-mass buildup on the membrane surface as a function of filtration time. The basic parameters of the model are the membrane resistance, specific cake resistance, and rate of surface renewal. The surface-renewal model has two forms: the complete model, which holds for compressible cakes, and a subsidiary model for incompressible cakes, which can be derived from the complete model. The subsidiary model is correlated against some of the experimental TMP data reported by Miller et al. (2014) for constant flux CFMF of a soybean-oil emulsion in a cross-flow filtration cell having unmodified and surface-modified, fouling-resistant membranes, and has an average root-mean-square (RMS) error of 6.2%. The complete model is fitted to the experimental TMP data reported by Ho and Zydney (2002) for constant flux microfiltration of a bovine serum albumin solution in a stirred cell using polycarbonate track-etched membranes and has an average RMS error of 11.2%. This model is also correlated against the TMP data of Kovalsky et al. (2009) for constant flux yeast filtration in a stirred cell (average RMS error = 9.2%).
description: 49 pages (including 7 tables and 11 figures)
title: The IASPEI standard nomenclature of seismic phases
Creators: name: Bormann, Peter
name: Storchak, Dmitry A.
name: Schweitzer, Johannes
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2013
Subjects: Seismology

description: New Manual of Seismological Observatory Practice 2 (NMSOP2)
Normal mode splitting in a coupled system of nanomechanical oscillator and parametric amplifier cavity
Creators: name: Huang, Sumei
name: Agarwal, G. S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study how an optical parametric amplifier inside the cavity can affect the normal mode splitting behavior of the coupled movable mirror and the cavity field. We work in the resolved sideband regime. The spectra exhibit a double-peak structure as the parametric gain is increased. Moreover, for a fixed parametric gain, the double-peak structure of the spectrum is more pronounced with increasing the input laser power. We give results for mode splitting. The widths of the split lines are sensitive to parametric gain.
description: 7 pages,9 figures
Dalitz Plot Analysis of B- --> D+ pi- pi-
Creators: name: Karbach, T. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a Dalitz plot analysis of B- --> D+ pi- pi- decays, based on a sample of about 383 million Y(4S) --> BBbar decays collected by the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC. The analysis has been published previously in PRD. We measure the inclusive branching fraction of the three-body decay to be BR(B- --> D+ pi- pi-) = (1.08 \pm 0.03\stat \pm 0.05\syst) x 10^{-3}$. We observe the established D^{*0}_2 and confirm the existence of D^{*0}_0 in their decays to D+ pi-, where the D^{*0}_2 and D^{*0}_0 are the 2+ and 0+ c-ubar P-wave states, respectively. We measure the masses and widths of D^{*0}_2 and D^{*0}_0 to be: m_{D^{*}_2} = (2460.4 \pm 1.2 \pm 1.2 \pm 1.9) MeV/c^2, Gamma_{D^*_2} = (41.8 \pm 2.5 \pm 2.1 \pm 2.0) MeV, m_{D^{*}_0} = (2297 \pm 8 \pm 5 \pm 19) MeV/c^2, Gamma_{D^*_0} = (273 \pm 12 \pm 17 \pm 45) MeV. The stated errors reflect the statistical and systematic uncertainties, and the uncertainty related to the assumed composition of signal events and the theoretical model.
description: 5 pages, 7 PDF figures, uses AIP style, conference proceedings of HADRON09, to be published in AIP Conference Proceedings, arXiv:0901.1291
title: Leggere, (ri)scrivere e condividere: vecchie e nuove pratiche di significazione
Creators: name: Carati, Simone
name: Morselli, Michele
name: Suverato, Andrea
Publisher: name: Dipartimento di Lingue, Letterature e Culture Moderne
Year: 2023

description: Meme, twitteratura, micronarrativa social, fanfictions e web comics sono soltanto alcune delle nuove forme di scrittura emerse nell’ambito della cultura postmediale. All’avvento di tecnologie sempre più all’avanguardia e dell’era social è infatti conseguita la proliferazione di nuove pratiche di lettura, (ri)scrittura e condivisione, che stanno via via trasformando il panorama letterario, aprendo la strada a fenomeni di produzione collettiva e stimolando un vertiginoso lavoro di ri-significazione. Esperienze che trovano nella rete e in particolare nei social media il proprio ecosistema di sviluppo e propagazione, raggiungendo spesso un’audience globale. Si assiste così a una straordinaria moltiplicazione di prodotti culturali, la cui matrice è spesso ignorata dal fruitore, pur
incidendo in modo significativo sulla forma e sul contenuto del messaggio.
Se la cornice di questo fenomeno è inedita, aprendo itinerari pressoché inesplorati, è altrettanto vero che le pratiche di riutilizzo, alterazione e ri-significazione di testi e immagini
non sono esclusive della contemporaneità: si tratta infatti di fenomeni che, con modalità diverse rispetto a quelle del web 2.0, risultano consustanziali alla produzione culturale fin dall’antichità, anche per via dell’assenza di concetti moderni come la proprietà intellettuale. Le letterature del passato sono costellate di rielaborazioni, riprese e procedimenti allusivi, e hanno sempre dato luogo a processi di transcodificazione.
Da queste dinamiche e domande di fondo, da cui si irradia a sua volta una molteplicità di fenomeni molto distanti tra loro, è nato il convegno dottorale Leggere, (ri)scrivere e condividere: vecchie e nuove pratiche di significazione, tenutosi presso il Dipartimento
LILEC dell’Università di Bologna tra il 16 e il 17 giugno 2021, e svoltosi in modalità telematica a causa dell’emergenza sanitaria allora in corso. Molte di queste hanno trovato forma nei contributi raccolti in questo volume, che rappresenta uno spaccato, seppur parziale, della varietà e originalità delle riflessioni proposte da chi ha partecipato. L’intento è di offrirle ai lettori e alle
lettrici del secondo numero dei Quaderni del dottorato, per poter proseguire un dibattito in costante ampliamento.
Estimating Preferences for Competition from Convex Budget Sets
Creators: name: Lozano, Lina
name: Reuben, Ernesto
Publisher: name: Stanford Digital Repository
Year: 2022
Subjects: preference elicitation
competition
risk
consistency
GARP

description: The literature in experimental economics has linked the laboratory measurement of preferences for competition with labor market outcomes and educational choices, such as wages and career choices. If preferences for competition are an important determinant of behavior, it is crucial to develop an accurate approach to measure them. In this study, we test whether preferences for competition can be rationalized by a utility function and develop a framework for the joint treatment of preferences for competition and risk. Our design improves on previous work in that it generates a rich data set of individual-level choices, accounts structurally for the relation between risk and competition preferences, and controls carefully for overconfidence. This allows us to test whether choices to enter tournaments are consistent with GARP and to estimate with a high degree of certainty the extent to which these choices are explained by a preference for competition and not by other confounding factors present in the environment. Our findings provide strong evidence for a preference for competition at the individual level that largely satisfies GARP, and that is conceptualized by two terms in the utility function of income obtained in a competitive environment. The first term assumes that preferences for competition affect utility directly through payoffs and the second term allows preferences for competition to influence utility through risk preferences. We discuss the economic implications of both interpretations of preferences for competition and discuss their relation with risk preferences.
NeIC Dellingr Project Phase 1 Deliverable 2
Creators: name: Fagerholm, Juha
name: Nikunen, Petri
name: Lindi, Bjorn
name: Malkiewicz, Tomasz
name: Sveinbjörnsson, Hjörleifur
name: Svalgaard-Kohrt, Jens
name: Viðarsson, Máni-Maríus
Publisher: name: Zenodo
Year: 2020

description: Dellingr Phase 1 deliverable 2 giving the technical analysis for resource exchange.
A Model of Justification
Creators: name: Ridout, Sarah
Publisher: name: Stanford Digital Repository
Year: 2022
Subjects: economics

description: I model decision-making constrained by morality, rationality, or other virtues. In addition to a primary preference over outcomes, the decision maker (DM) is characterized by a set of preferences that he considers justifiable. In each choice setting, he maximizes his primary preference over the subset of alternatives that maximize at least one of the justifiable preferences. The justification model unites a broad class of empirical work on distributional preferences, charitable donations, prejudice/discrimination, and corruption/bribery. I provide full behavioral characterizations of several variants of the justification model as well as practical tools for identifying primary preferences and justifications from choice behavior. I show that identification is partial in general, but full identification can be achieved by including lotteries in the domain and allowing for heterogeneity in both primary preferences and justifications. Since the heterogeneous model uses between-subject data, it is robust to consistency motives that may arise in within-subject experiments. I extend the heterogeneous model to information choice and show that it accounts for observed patterns of information demand and avoidance on ethical domains.
title: Workshop-Bericht
Creators: name: DFG-Projekt RADIESCHEN-Rahmenbedingungen Einer Disziplinübergreifenden Forschungsdateninfrastruktur
Publisher: name: DFG-Projekt RADIESCHEN - Rahmenbedingungen einer disziplinübergreifenden Forschungsdateninfrastruktur
Year: 2013
Subjects: Forschungsdaten, Infrastrukturen
DFG
Infrastrukturen

description: Bericht zum gemeinsamen Workshop der SFB-INF-Projekte am 11. April 2013 an der SUB Göttingen. Der Experten-Workshop richtete sich an VertreterInnen der SFB-INF-Projekte und sollte diesen als Plattform zu Austausch, Diskussion und Vernetzung dienen.
A Model of Politics and the Central Bank
Creators: name: Dziuda, Wioletta
name:  Pflueger, Carolin
Publisher: name: Stanford Digital Repository
Year: 2022
Subjects: economics

description: We present a two-period model examining how the central bank and the elected government jointly shape elections and economic outcomes. An apolitical central bank minimizes a quadratic loss function in inflation and unemployment along an expectational Phillips curve, which is shifted by the government’s quality. Fully rational voters optimally choose between the incumbent, whose quality they infer from unemployment, and a challenger of unknown quality. We find that governments prefer more inflation-averse central banks than the social planner, rationalizing the political success of inflation-targeting in practice. Inflation-targeting, however, has negative economic consequences by allowing lower quality incumbents to be reelected.