cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-Drag Interstellar Objects And Galactic Dynamical Streams
Creators: name: Eubanks, T. Marshall
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The nature of 1I/'Oumuamua (henceforth, 1I), the first interstellar object known to pass through the solar system, remains mysterious. Feng \& Jones noted that the incoming 1I velocity vector "at infinity" ($\textbf{v}_{\infty}$) is close to the motion of the Pleiades dynamical stream (or Local Association), and suggested that 1I is a young object ejected from a star in that stream. Micheli $\textit{et al.}$ subsequently detected non-gravitational acceleration in the 1I trajectory; this acceleration would not be unusual in an active comet, but 1I observations failed to reveal any signs of activity. Bialy $\&$ Loeb hypothesized that the anomalous 1I acceleration was instead due to radiation pressure, which would require an extremely low mass-to-area ratio (or area density). Here I show that a low area density can also explain the very close kinematic association of 1I and the Pleiades stream, as it renders 1I subject to drag capture by interstellar gas clouds. This supports the radiation pressure hypothesis and suggests that there is a significant population of low area density ISOs in the Galaxy, leading, through gas drag, to enhanced ISO concentrations in the galactic dynamical streams. Any interstellar object entrained in a dynamical stream will have a predictable incoming $\textbf{v}_{\infty}$; targeted deep surveys using this information should be able to find dynamical stream objects months to as much as a year before their perihelion, providing the lead time needed for fast-response missions for the future $\textit{in situ}$ exploration of such objects.
description: 4 Figures, accepted for ApJL. Comments and discussion welcome
Universal construction of W_{p,q} algebras
Creators: name: Avan, J.
name: Frappat, L.
name: Rossi, M.
name: Sorba, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 81R50, 17B37

description: We present a direct construction of abstract generators for q-deformed W_N algebras. This procedure hinges upon a twisted trace formula for the elliptic algebra A_{q,p}(sl(N)_c) generalizing the previously known formulae for quantum groups.
description: packages amsfonts, amssymb
Cross-user Similarities in Viewing Behavior for 360$^{\circ}$ Video and Caching Implications
Creators: name: Carlsson, Niklas
name: Eager, Derek
Publisher: name: arXiv
Year: 2019
Subjects: subject: Multimedia (cs.MM)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: H.5.1; H.4; C.2.2; C.2.4; C.4
subject: 68M10, 68M12, 68M14, 68M20

description: The demand and usage of 360$^{\circ}$ video services are expected to increase. However, despite these services being highly bandwidth intensive, not much is known about the potential value that basic bandwidth saving techniques such as server or edge-network on-demand caching (e.g., in a CDN) could have when used for delivery of such services. This problem is both important and complicated as client-side solutions have been developed that split the full 360$^{\circ}$ view into multiple tiles, and adapt the quality of the downloaded tiles based on the user's expected viewing direction and bandwidth conditions. This paper presents new trace-based analysis methods that incorporate users' viewports (the area of the full 360$^{\circ}$ view the user actually sees), a first characterization of the cross-user similarities of the users' viewports, and a trace-based analysis of the potential bandwidth savings that caching-based techniques may offer under different conditions. Our analysis takes into account differences in the time granularity over which viewport overlaps can be beneficial for resource saving techniques, compares and contrasts differences between video categories, and accounts for uncertainties in the network conditions and the prediction of the future viewing direction when prefetching. The results provide substantial insight into the conditions under which overlap can be considerable and caching effective, and inform the design of new caching system policies tailored for 360$^{\circ}$ video.
description: 23 pages. This paper has been accepted (Dec. 2021) to ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM)
The Research Hour
Creators: name: Davies, Anne
name: Young, Vicki
Publisher: name: The University of British Columbia
Year: 2017

description: Fifty minute instruction does not always reach the students at the right time. Nor does it give them individual attention. We offer research consultations by appointment which is great for one on one help but it lacks the support of the professor and the Writing Center. By scheduling research hours outside of class time, in conjunction with faculty, Writing Center staff, and the librarian liaison to that department, we found a new and more effective way to provide students with help for their research projects at a strategic time before their assignment is due. Having the professor offer extra credit and strongly encourage students to attend, ensures good participation. Student assessment showed that the real gain for them was not the extra credit but better research projects and knowledge of people they could go to for help on campus. The Professor reported that extra credit was the motivator, but the usefulness of the session was praised in the feedback. Writing Center tutors helped with citations and avoiding plagiarism, the professor helped refine topics and the librarian provided guidance on the appropriate databases to use for the topic.
Sources of primary production to Arctic bivalves identified using amino acid stable carbon isotope fingerprinting*
Creators: name: Rowe, Audrey G.
name: Iken, Katrin
name: Arny L. Blanchard
name: O’Brien, Diane M.
name: Osvik, Renate Døving
name: Uradnikova, Martina
name: Wooller, Matthew J.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry

description: Benthic invertebrates are a crucial trophic link in Arctic marine food webs. However, estimates of the contribution of different primary production sources sustaining these organisms are not well characterised. We measured the stable carbon isotope values (δ13C) of essential amino acids (EAAs) in muscle tissue from two common bivalve genera (Macoma spp. and Astarte spp.) collected in Hanna Shoal in the northeastern Chukchi Sea. Mixing models comparing the δ13CEAA fingerprints of the bivalves to a suite of primary production endmembers revealed relatively high contributions of EAAs from phytoplankton and bacteria in both species. We also examined whether δ13CEAA fingerprints could be produced from the EAAs preserved in bivalve shells, which could allow primary production sources to be estimated from ancient bivalve shells. The δ13CEAA fingerprints from a suite of paired modern bivalve shells and muscle from Macoma calcarea from across the Chukchi Sea revealed a correspondence between the estimates of the dominant primary production source of EAAs derived from analyses of these two tissue types. Our findings indicate that δ13CEAA fingerprinting of marine bivalves can be used to examine dominant organic matter sources in the Arctic marine benthos in recent years as well as in deeper time.
Optimal Control of an Impulsive VS-EIAR Epidemic Model with Application to COVID-19
Creators: name: Diop, Mamadou Abdoul
name: Elghandouri, Mohammed
name: Ezzinbi, Khalil
Publisher: name: arXiv
Year: 2024
Subjects: subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this work, we investigate a VS-EIAR epidemiological model that incorporates vaccinated individuals $\{V_i : i = 1, \ldots, n\}$, where $n \in \mathbb{N}^{*}$. The dynamics of the VS-EIAR model are governed by a system of ordinary differential equations describing the evolution of vaccinated, susceptible, exposed, infected, asymptomatic, and deceased population groups. Our primary objective is to minimize the number of susceptible, exposed, infected, and asymptomatic individuals by administering vaccination doses to susceptible individuals and providing treatment to the infected population. To achieve this, we employ optimal control theory to regulate the epidemic dynamics within an optimal terminal time $τ^{*}$. Using Pontryagin's Maximum Principle (PMP), we establish the existence of an optimal control pair $(v^{*}(t), u^{*}(t))$. Additionally, we extend the model to an impulsive VS-EIAR framework, with particular emphasis on the impact of immigration and population movement. Finally, we present numerical simulations to validate the theoretical results and demonstrate their practical applicability.
Enhancing Underexposed Photos using Perceptually Bidirectional Similarity
Creators: name: Zhang, Qing
name: Nie, Yongwei
name: Zhu, Lei
name: Xiao, Chunxia
name: Zheng, Wei-Shi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Although remarkable progress has been made, existing methods for enhancing underexposed photos tend to produce visually unpleasing results due to the existence of visual artifacts (e.g., color distortion, loss of details and uneven exposure). We observed that this is because they fail to ensure the perceptual consistency of visual information between the source underexposed image and its enhanced output. To obtain high-quality results free of these artifacts, we present a novel underexposed photo enhancement approach that is able to maintain the perceptual consistency. We achieve this by proposing an effective criterion, referred to as perceptually bidirectional similarity, which explicitly describes how to ensure the perceptual consistency. Particularly, we adopt the Retinex theory and cast the enhancement problem as a constrained illumination estimation optimization, where we formulate perceptually bidirectional similarity as constraints on illumination and solve for the illumination which can recover the desired artifact-free enhancement results. In addition, we describe a video enhancement framework that adopts the presented illumination estimation for handling underexposed videos. To this end, a probabilistic approach is introduced to propagate illuminations of sampled keyframes to the entire video by tackling a Bayesian Maximum A Posteriori problem. Extensive experiments demonstrate the superiority of our method over the state-of-the-art methods.
description: Aceepted to IEEE Transactions on Multimedia (TMM)
Magnetized Accretion-Ejection Structures: 2.5D MHD simulations of continuous Ideal Jet launching from resistive accretion disks
Creators: name: Casse, Fabien
name: Keppens, Rony
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present numerical magnetohydrodynamic (MHD) simulations of a magnetized accretion disk launching trans-Alfvenic jets. These simulations, performed in a 2.5 dimensional time-dependent polytropic resistive MHD framework, model a resistive accretion disk threaded by an initial vertical magnetic field. The resistivity is only important inside the disk, and is prescribed as eta = alpha_m V_AH exp(-2Z^2/H^2), where V_A stands for Alfven speed, H is the disk scale height and the coefficient alpha_m is smaller than unity. By performing the simulations over several tens of dynamical disk timescales, we show that the launching of a collimated outflow occurs self-consistently and the ejection of matter is continuous and quasi-stationary. These are the first ever simulations of resistive accretion disks launching non-transient ideal MHD jets. Roughly 15% of accreted mass is persistently ejected. This outflow is safely characterized as a jet since the flow becomes super-fastmagnetosonic, well-collimated and reaches a quasi-stationary state. We present a complete illustration and explanation of the `accretion-ejection' mechanism that leads to jet formation from a magnetized accretion disk. In particular, the magnetic torque inside the disk brakes the matter azimuthally and allows for accretion, while it is responsible for an effective magneto-centrifugal acceleration in the jet. As such, the magnetic field channels the disk angular momentum and powers the jet acceleration and collimation. The jet originates from the inner disk region where equipartition between thermal and magnetic forces is achieved. A hollow, super-fastmagnetosonic shell of dense material is the natural outcome of the inwards advection of a primordial field.
description: ApJ (in press), 32 pages, Higher quality version available at http://www-laog.obs.ujf-grenoble.fr/~fcasse
MINESweeper: Spectrophotometric Modeling of Stars in the Gaia Era
Creators: name: Cargile, Phillip A.
name: Conroy, Charlie
name: Johnson, Benjamin D.
name: Ting, Yuan-Sen
name: Bonaca, Ana
name: Dotter, Aaron
name: Speagle, Joshua S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present MINESweeper, a tool to measure stellar parameters by jointly fitting observed spectra and broadband photometry to model isochrones and spectral libraries. This approach enables the measurement of spectrophotometric distances, in addition to stellar parameters such as Teff, log(g), [Fe/H], [a/Fe], and radial velocity. MINESweeper employs a Bayesian framework and can easily incorporate a variety of priors, including Gaia parallaxes. Mock data are fit in order to demonstrate how the precision of derived parameters depends on evolutionary phase and SNR. We then fit a selection of data in order to validate the model outputs. Fits to a variety of benchmark stars including Procyon, Arcturus, and the Sun result in derived stellar parameters that are in good agreement with the literature. We then fit combined spectra and photometry of stars in the open and globular clusters M92, M13, M3, M107, M71, and M67. Derived distances, [Fe/H], [a/Fe], and log(g)-Teff, relations are in overall good agreement with literature values, although there are trends between metallicity and log(g), within clusters that point to systematic uncertainties at the ~0.1 dex level. Finally, we fit a large sample of stars from the H3 Spectroscopic Survey in which high quality Gaia parallaxes are also available. These stars are fit without the Gaia parallaxes so that the geometric parallaxes can serve as an independent test of the spectrophotometric distances. Comparison between the two reveals good agreement within their formal uncertainties after accounting for the Gaia zero point uncertainties.
description: 20 pages, 14 figures, Accepted by ApJ
Discovering the junction : professor expectations and student interpretations of academic skills
Creators: name: Parlette-Stewart, Melanie
name: Schnablegger, Laura
name: Rushe, Shannon
Publisher: name: The University of British Columbia
Year: 2016

description: As reflected by the movement in higher education to develop and assess learning outcomes, there is a demand to demonstrate the competencies, sometimes referred to as graduate attributes, a university education will provide. These competencies or attributes include skill sets required to succeed in academic pursuits, broadly including writing, learning and research skills. As members of the Learning Commons, we provide front-line support to students and witness, first-hand, the challenges in student skill development in the areas of information literacy, learning and writing. Through a collaborative, cross-unit research project funded by the University of Guelph’s Scholarship of Teaching and Learning research grant, we have identified, in the teaching and learning in third year university courses, a series of disconnects A. between the learning, writing and information literacy skills professors expect students to possess and the skills students actually possess when they enter the course; B. between professor expectations of student skill requirements and student interpretation of skill requirements from the course outline; and C. between professor and student understandings of where students should develop these skills (i.e. in class or outside of class). Based on our findings, we aim to inform the academic support delivery of units within the Learning Commons of the Library, as well as to encourage collaborations across units that support teaching and learning. This session will present the literature; introduce our research methodology and approach to recruitment of both students and faculty; offer interpretations on student understandings of course outlines; and demonstrate the value of both collaborative, cross-unit and cross-departmental research, as well as cross-disciplinary research. After the presentation, we will encourage dialogue and questions, and hope that these conversations will inform avenues for potential collaborations between staff that focus on student skills and curriculum development.
Gossip routing, percolation, and restart in wireless multi-hop networks
Creators: name: Blywis, Bastian
name: Reinecke, Philipp
name: Günes, Mesut
name: Wolter, Katinka
Publisher: name: Freie Universität Berlin
Year: 2011
Subjects: subject: 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::004 Datenverarbeitung; Informatik

description: Route and service discovery in wireless multi-hop networks applies flooding or gossip routing to disseminate and gather information. Since packets may get lost, retransmissions of lost packets are required. In many protocols the retransmission timeout is fixed in the protocol specification. In this technical report we demonstrate that optimization of the timeout is required in order to ensure proper functioning of flooding schemes. Based on an experimental study, we apply percolation theory and derive analytical models for computing the optimal restart timeout. To the best of our knowledge, this is the first comprehensive study of gossip routing, percolation, and restart in this context.
Quantum Zeno Dynamics
Creators: name: Facchi, P.
name: Gorini, V.
name: Marmo, G.
name: Pascazio, S.
name: Sudarshan, E. C. G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The evolution of a quantum system undergoing very frequent measurements takes place in a subspace of the total Hilbert space (quantum Zeno effect). The dynamical properties of this evolution are investigated and several examples are considered.
description: 12 pages, 1 figure
Additional file 1 of Decreased blood CD4+ T lymphocyte helps predict cognitive impairment in patients with amyotrophic lateral sclerosis
Creators: name: Yang, Yuan
name: Pan, Dengji
name: Gong, Zhenxiang
name: Tang, Jiahui
name: Li, Zehui
name: Ding, Fengfei
name: Liu, Mao
name: Zhang, Min
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Screening nature of the van der Waals density functional method: A review and analysis of the many-body physics foundation
Creators: name: Hyldgaard, Per
name: Jiao, Yang
name: Shukla, Vivekanand
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We review the screening nature and many-body physics foundation of the van der Waals density functional (vdW-DF) method, a systematic approach to construct truly nonlocal exchange-correlation energy density functionals. To that end we define and focus on a class of consistent vdW-DF versions that adhere to the Lindhard screening logic of the full method formulation. The consistent-exchange vdW-DF-cx version and its spin extension represent the first examples of this class; In general, consistent vdW-DFs reflect a concerted expansion of a formal recast of the adiabatic-connection formula, an exponential summation of contributions to the local-field response, and the Dyson equation. We argue that the screening emphasis is essential because the exchange-correlation energy reflects an effective electrodynamics set by a long-range interaction. Two consequences are that 1) there are, in principle, no wiggle room in how one balances exchange and correlation, for example, in vdW-DF-cx, and that 2) consistent vdW-DFs have a formal structure that allows them to incorporate vertex-correction effects, at least in the case of levels that experience recoil-less interactions (for example, near the Fermi surface). We explore the extent to which the strictly nonempirical vdW-DF-cx formulation can serve as a systematic extension of the constraint-based semilocal functionals. For validation, we provide a complete survey of vdW-DF-cx performance for broad molecular processes and comparing to the quantum-chemistry calculations that are summarized in that paper. We also provide new vdW-DF-cx results for metal surface energies and work functions that we compare to experiment. Finally, we use the screening insight to separate the vdW-DF nonlocal-correlation term and present tools to compute and map the binding signatures.
description: 57 pages, 16 figures, 4 Tables. Published as an invited Topical review in IOP Journal of Physics: Condensed Matter
A Search for Active Galactic Nuclei in Sc Galaxies with H II Spectra
Creators: name: Ulvestad, James S.
name: Ho, Luis C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We have searched for nuclear radio emission from a statistically complete sample of 40 Sc galaxies within 30 Mpc that are optically classified as star-forming objects, in order to determine whether weak AGNs might be present. Only three nuclear radio sources were detected, in NGC 864, NGC 4123, and NGC 4535. These galaxies have peak 6-cm radio powers of 10^{20} W/Hz at arcsecond resolution, while upper limits of the non-detected galaxies typically range from 10^{18.4} to 10^{20} W/Hz. The three nuclear radio sources all are resolved and appear to have diffuse morphologies, with linear sizes of ~300 pc. This strongly indicates that circumnuclear star formation has been detected in these three H II galaxies. Comparison with previous 20-cm VLA results for the detected galaxies shows that the extended nuclear radio emission has a flat spectrum in two objects, and almost certainly is generated by thermal emission from gas ionized by young stars in the centers of those galaxies. The 6-cm radio powers are comparable to predictions for thermal emission that are based on the nuclear H-alpha luminosities, and imply nuclear star formation rates of 0.08-0.8 solar masses/yr, while the low-resolution NRAO VLA Sky Survey implies galaxy-wide star formation rates of 0.3-1.0 solar masses/yr in stars above 5 solar masses. Although the presence of active nuclei powered by massive black holes cannot be definitively ruled out, the present results suggest that they are likely to be rare in these late-type galaxies with H II spectra.
description: To appear in ApJ. 7 pages
The geometric Toda equations for noncompact symmetric spaces
Creators: name: McIntosh, Ian
Publisher: name: arXiv
Year: 2024
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37K10, 53C43, 58E20

description: This paper has two purposes. The first is to classify all those versions of the Toda equations which govern the existence of $τ$-primitive harmonic maps from a surface into a homogeneous space $G/T$ for which $G$ is a noncomplex noncompact simple real Lie group, $τ$ is the Coxeter automorphism which Drinfel'd \& Sokolov assigned to each affine Dynkin diagram, and $T$ is the compact torus fixed pointwise by $τ$. Here $τ$ may be either an inner or an outer automorphism. We interpret the Toda equations over a compact Riemann surface $Σ$ as equations for a metric on a holomorphic principal $T^\mathbb{C}$-bundle $Q^\mathbb{C}$ over $Σ$ whose Chern connection, when combined with holomorphic field $φ$, produces a $G$-connection which is flat precisely when the Toda equations hold. The second purpose is to establish when stability criteria for the pair $(Q^\mathbb{C},φ)$ can be used to prove the existence of solutions. We classify those real forms of the Toda equations for which this pair is a principal pair and we call these \emph{totally noncompact} Toda pairs: stability theory then gives algebraic conditions for the existence of solutions. Every solution to the geometric Toda equations has a corresponding $G$-Higgs bundle. We explain how to construct this $G$-Higgs bundle directly from the Toda pair and show that Baraglia's cyclic Higgs bundles arise from a very special case of totally noncompact cyclic Toda pairs.
description: Author Accepted Manuscript, 38 pages
Jinmu xianhuan 金母獻環 Q00359_01_B
Creators: name: Admin, Textcourt
Publisher: name: University of Oxford
Year: 2025
Subjects: classificationCode: 470515
subject: Literature in Chinese

description: Launched in October 2019 at the University of Oxford, TEXTCOURT: Linking the Textual Worlds of Chinese Court Theater, ca. 1600-1800 is a five-year research project whose aim is to develop a digital archive of court drama texts to connect and link them with their local and global contexts. The project will enable textual studies of Chinese court drama and produce research publications and an anthology of English translations. It will contribute to the understanding of the role of Chinese court drama in world court cultures.
title: Exkursionsführer Neophytenvegetation : Botanikertagung 2004 in Braunschweig
Creators: name: Brandes, Dietmar
Publisher: name: Institut für Botanik
Year: 2004
Subjects: subject: 580

description: Guide for the scientific excursion "Neophytes" of the "Botanikertagung Braunschweig 2004" to selected habitats of alien plant species in the surroundings of Braunschweig and Magdeburg.
Yujia yanle 漁家言樂 Q00221_01_A
Creators: name: Admin, Textcourt
Publisher: name: University of Oxford
Year: 2025
Subjects: classificationCode: 470515
subject: Literature in Chinese

description: Launched in October 2019 at the University of Oxford, TEXTCOURT: Linking the Textual Worlds of Chinese Court Theater, ca. 1600-1800 is a five-year research project whose aim is to develop a digital archive of court drama texts to connect and link them with their local and global contexts. The project will enable textual studies of Chinese court drama and produce research publications and an anthology of English translations. It will contribute to the understanding of the role of Chinese court drama in world court cultures.
Fibre bundle formulation of nonrelativistic quantum mechanics (full version)
Creators: name: Iliev, Bozhidar Z.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose a new systematic fibre bundle formulation of nonrelativistic quantum mechanics. The new form of the theory is equivalent to the usual one and is in harmony with the modern trends in theoretical physics and potentially admits new generalizations in different directions. In it the Hilbert space of a quantum system (from conventional quantum mechanics) is replaced with an appropriate Hilbert bundle of states and a pure state of the system is described by a lifting of paths or section along paths in this bundle. The evolution of a pure state is determined through the bundle (analogue of the) Schrödinger equation. Now the dynamical variables and the density operator are described via liftings of paths or morphisms along paths in suitable bundles. The mentioned quantities are connected by a number of relations derived in this work.
description: 106 standard LaTeX 2e (11pt, A4) pages. The packages AMS-LaTeX and amsfonts are required. This is a unified and completely revised version of the series of papers quant-ph/9803083, quant-ph/9803084, quant-ph/9804062, quant-ph/9806046, quant-ph/9901039, and quant-ph/9902068. For related papers, view http://www.inrne.bas.bg/mathmod/bozhome/
Echoic Training and the Acquisition of Bidirectional Naming in Elementary Students
Creators: Chen, Angela
Publisher: name: Columbia University
Year: 2019
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Behavioral psychology
subject: Names
subject: Verbal behavior
subject: Language acquisition
subject: Children--Language

description: I conducted 2 studies to investigate the relationship between vocal verbal behavior, specifically, articulation and the production of echoics, and the presence of bidirectional Naming (BiN). In Study 1, I performed a correlational analysis using data collected on (1) responses to bidirectional Naming probes, (2) standard score son an articulation assessment, and (3) scaled scores on a sentence repetition assessment which functioned to measure echoic behavior at the sentence level for 46 early elementary students. The number of correct responses to unfamiliar stimuli using unfamiliar spoken and visual stimuli were measured for bidirectional Naming probes. Student performance on the Goldman-Fristoe Test of Articulation 3 served to measure the participants’ articulation of consonant and consonant cluster sounds in the English language. The Recalling Sentences subtest on the Clinical Evaluation of Language Fundamentals® – Fifth Edition was used to measure the accuracy of participants’ echoic behavior when repeating spoken sentences. Results using a Pearson’s correlation showed that there was no significant correlation between bidirectional Naming and participants’ articulation scores using the Goldman-Fristoe Test of Articulation 3, r = .037, p = .808. However, there was a significant and overall positive correlation between bidirectional Naming and participant scores from the Recalling Sentences subtest, r = .589, p < .001. Following the results of the correlations from Study I, I tested the effects of 2 echoic training interventions on the acquisition of bidirectional Naming in 8 early elementary students that were grouped into matched pairs to form 4 dyads in Experiment I. In each dyad, 1 participant underwent a "verbal echoic” intervention consisting of echoing sentences comprised of grammatically coherent English that had verbal function. The matched participant in the same dyad went through an “acoustic echoic” intervention that used the same words contained in the sentence echoed by the participant in the verbal echoic intervention but scrambled so that the sentence were syntactically and semantically incoherent and thus, lacked verbal function. Results showed that 5 out of the 8 participants have acquired bidirectional Naming following either echoic condition. More specifically, 4 participants acquired bidirectional Naming after the verbal echoic condition. One other participant acquired bidirectional Naming following the acoustic echoic condition. The implications of the differences in the effectiveness of the two intervention conditions are discussed with regard to the significance of acquiring bidirectional Naming.
Forward proton detectors in heavy ion physics
Creators: name: Staszewski, Rafał
name: Cieśla, Krzysztof
name: Chwastowski, Janusz J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The forward proton detectors, already existing at the LHC, are considered in the context of heavy ion collisions. It is shown that such detectors have the potential to measure nuclear debris originating from spectator nucleons. The geometric acceptance for different nuclei is studied, and how it is affected by the motion of the nucleons in the nucleus and by the experimental conditions. A possibility of reconstructing the impact parameter of the collision from the measurement of the nuclear fragments is discussed.
description: Talk presented at XXV Cracow EPIPHANY Conference on Advances in Heavy Ion Physics, 8-11 January 2019
Complementation, Local Complementation, and Switching in Binary Matroids
Creators: name: Oxley, James
name: Singh, Jagdeep
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35, 05C25

description: In 2004, Ehrenfeucht, Harju, and Rozenberg showed that any graph on a vertex set $V$ can be obtained from a complete graph on $V$ via a sequence of the operations of complementation, switching edges and non-edges at a vertex, and local complementation. The last operation involves taking the complement in the neighbourhood of a vertex. In this paper, we consider natural generalizations of these operations for binary matroids and explore their behaviour. We characterize all binary matroids obtainable from the binary projective geometry of rank $r$ under the operations of complementation and switching. Moreover, we show that not all binary matroids of rank at most $r$ can be obtained from a projective geometry of rank $r$ via a sequence of the three generalized operations. We introduce a fourth operation and show that, with this additional operation, we are able to obtain all binary matroids.
description: Fixed an error in the proof of Theorem 5.3. Adv. in Appl. Math. (2020)
Optimal lower bounds for Donaldson's J-functional
Creators: name: Dyrefelt, Zakarias Sjöström
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper we provide an explicit formula for the optimal lower bound of Donaldson's J-functional, in the sense of finding explicitly the optimal constant in the definition of coercivity, which always exists and takes negative values in general. This constant is positive precisely if the J-equation admits a solution, and the explicit formula has a number of applications. First, this leads to new existence criteria for constant scalar curvature Kähler (cscK) metrics in terms of Tian's alpha invariant. Moreover, we use the above formula to discuss Calabi dream manifolds and an analogous notion for the J-equation, and show that for surfaces the optimal bound is an explicitly computable rational function which typically tends to minus infinity as the underlying class approaches the boundary of the Kähler cone, even when the underlying Kähler classes admit cscK metrics. As a final application we show that if the Lejmi-Székelyhidi conjecture holds, then the optimal bound coincides with its algebraic counterpart, the set of J-semistable classes equals the closure of the set of uniformly J-stable classes in the Kähler cone, and there exists an optimal degeneration for uniform J-stability.
description: Final version, to appear in Adv. Math
Free Field Construction for Correlation Functions of the Eight-Vertex Model
Creators: name: Lashkevich, Michael
name: Pugai, Yaroslav
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A free field representation for the type $I$ vertex operators and the corner transfer matrices of the eight-vertex model is proposed. The construction uses the vertex-face correspondence, which makes it possible to express correlation functions of the eight-vertex model in terms of correlation functions of the SOS model with a nonlocal insertion. This new nonlocal insertion admits of a free field representation in terms of Lukyanov's screening operator. The spectrum of the corner transfer matrix and the Baxter--Kelland formula for the average staggered polarization have been reproduced.
description: 22 pages, uses pictex.tex, typos corrected and minor changes
Learning magnetization dynamics
Creators: name: Kovacs, Alexander
name: Fischbacher, Johann
name: Oezelt, Harald
name: Gusenbauer, Markus
name: Exl, Lukas
name: Bruckner, Florian
name: Suess, Dieter
name: Schrefl, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Deep neural networks are used to model the magnetization dynamics in magnetic thin film elements. The magnetic states of a thin film element can be represented in a low dimensional space. With convolutional autoencoders a compression ratio of 1024:1 was achieved. Time integration can be performed in the latent space with a second network which was trained by solutions of the Landau-Lifshitz-Gilbert equation. Thus the magnetic response to an external field can be computed quickly.
Classical and quantum dynamics of a spin-1/2
Creators: name: Alscher, Adrian
name: Grabert, Hermann
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We reply to a comment on `Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field'.
description: 4 pages, submitted to Journal of Physics A
Yuanri huanji 元日歡集 Q00220_01_A
Creators: name: Admin, Textcourt
Publisher: name: University of Oxford
Year: 2025
Subjects: classificationCode: 470515
subject: Literature in Chinese

description: Launched in October 2019 at the University of Oxford, TEXTCOURT: Linking the Textual Worlds of Chinese Court Theater, ca. 1600-1800 is a five-year research project whose aim is to develop a digital archive of court drama texts to connect and link them with their local and global contexts. The project will enable textual studies of Chinese court drama and produce research publications and an anthology of English translations. It will contribute to the understanding of the role of Chinese court drama in world court cultures.
Lattice Approximation of Quantum Statistical Traces at a Complex Temperature
Creators: name: Lukkarinen, Jani
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We prove that the simple condition on the potential V, \int exp(-t V) < \infty for all t>0, is sufficient for the lattice approximation of the trace Tr[A exp(-b H)] with (Re b)>0 to work for all bounded functions A and a large class of potentials. As a by-product we obtain an explicit bound for the real-temperature lattice kernels.
description: 9 pages revtex with amstex
Two new iridoid glycosides from Odontites vulgaris
Creators: name: Wang, Meng-Jie
name: Yang, De
name: Diao, Sheng-Bao
name: Hu, Zheng-Yu
name: Hua, Hui-Ming
name: Zhao, Yu-Qing
name: Zhou, Wei
name: Li, Gao
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Two new iridoid glycosides, named 3′-O-benzoyl-dolichocymboside D (1) and dolichocymboside E (2), along with ten known glycosides (3–12), were isolated from the ethanol extract of the whole plants of Odontites vulgaris Moench. The structures of the isolated compounds were elucidated by 1D and 2D NMR and HR-ESI-MS spectra and by comparison with those reported in the literature. This is the first report on compounds 11 and 12 isolated from the family Scrophulariaceae, and compounds 8–10 were isolated from the genus Odontites.
Hidden Cores of Active Galactic Nuclei as the Origin of Medium-Energy Neutrinos: Critical Tests with the MeV Gamma-Ray Connection
Creators: name: Murase, Kohta
name: Kimura, Shigeo S.
name: Meszaros, Peter
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Mysteries about the origin of high-energy cosmic neutrinos have deepened by the recent IceCube measurement of a large diffuse flux in the 10-100 TeV range. Based on the standard disk-corona picture of active galactic nuclei (AGN), we present a phenomenological model enabling us to systematically calculate the spectral sequence of multimessenger emission from the AGN coronae. We show that protons in the coronal plasma can be stochastically accelerated up to PeV energies by plasma turbulence, and find that the model explains the large diffuse flux of medium-energy neutrinos if the cosmic rays carry only a few percent of the thermal energy. We find that the Bethe-Heitler process plays a crucial role in connecting these neutrinos and cascaded MeV gamma rays, and point out that the gamma-ray flux can even be enhanced by the reacceleration of secondary pairs. Critical tests of the model are given by its prediction that a significant fraction of the MeV gamma-ray background correlates with about 10 TeV neutrinos, and nearby Seyfert galaxies including NGC 1068 are promising targets for IceCube, KM3Net, IceCube-Gen2, and future MeV gamma-ray telescopes.
description: 7+6 pages, 4+6 figures, 0+2 tables, version to appear in PRL (submitted on Apr/08/2019), with clarifications and extended descriptions (including discussion on NGC 1068). Conclusions unchanged
Taking the show on the road : helping institutions implement the IL framework
Creators: name: Burgess, Colleen
name: Shujah, Sarah
Publisher: name: The University of British Columbia
Year: 2016

description: The ACRL Framework for Information Literacy (IL) for Higher Education presents librarians with a unique challenge to the design and delivery of IL instruction at academic institutions. Also, it invites an opportunity for collaboration among librarians beyond their home institutions to study, engage, and counter its approach to IL. Through revision and feedback opportunities, threshold concept trainings and immersions, conferences and workshops, and now implementing the Framework in our institutions’ IL strategies, librarians are building partnerships to engage and contend with the Framework. The presenters, originally from TRY (Toronto, Ryerson, and York University Libraries), want to share their experiences with developing effective workshops that explore the Framework, that help implement the Framework in teaching, and build ideas for institutional IL strategies. Furthermore, they will introduce participants to a community generated, instructor led wiki where librarians can share examples for intersecting, implementing, and integrating the Framework pedagogy. By expanding beyond their home institutions, the presenters found intersections in their pedagogical approach to IL. They have collaborated on the Framework feedback process, and facilitated a fishbowl conversation on the Framework at the 2015 OLA Superconference. Recently, the pair ‘took the show on the road’ to establish partnerships with librarians across Ontario to build capacity in the theoretical approach to IL, analyzing the threshold concepts, and using the document to inspire a revitalized approach to IL. The presenters will discuss workshops that they have offered at York, University of Toronto, Western, and Carleton, including session plans, best practices for Framework workshops, lessons learned, and how librarians can join the community and bring the conversation to their institution. Participants will leave the session with IL workshops ideas to engage librarians with the Framework at their home institutions, best practices for developing workshops, and an enthusiasm to join the TRY wiki community.
Additional file 1 of Necrotizing funisitis and calcification of umbilical vein: case report and review
Creators: name: Wang, Wendi
name: Zhang, Miao
name: Gong, Liyun
name: Wu, Qingqing
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Economic Development Policies Through Business Incubation and Co-working: A Study of San Francisco and New York City
Creators: Salinger, Jordan Harrison
Publisher: name: Columbia University
Year: 2013
Subjects: Business incubators--Planning
Public policy (Law)
Land use--Planning

description: The growth of business incubators and co-working spaces since 1980 has been incredibly rapid, with nearly 1,400 facilities currently operating in the United States. San Francisco and New York lead the way, with public and privately-run facilities fueling business growth. Through my research, which includes 15 structured open-ended interviews, and geographic information systems analysis, I hope to determine if and how industrial plans and targeting should be carried out, how the governmental policies are different in each of the cities as it relates to the public funding of incubators, and how the impacts of industrial targeting and land use strategies impact start-up web-based software firms.