cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effects of large-scale advection and small-scale turbulent diffusion on vertical phytoplankton dynamics
Creators: name: Tergolina, Vinicius Beltram
name: Calzavarini, Enrico
name: Mompean, Gilmar
name: Berti, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Turbulence has been recognized as a factor of paramount importance for the survival or extinction of sinking phytoplankton species. However, dealing with its multiscale nature in models of coupled fluid and biological dynamics is a formidable challenge. Advection by coherent structures, as those related to winter convection and Langmuir circulation, is also recognized to play a role in the survival and localization of phytoplankton. In this work we revisit a theoretically appealing model for phytoplankton vertical dynamics, and numerically investigate how large-scale fluid motions affect the survival conditions and the spatial distribution of the biological population. For this purpose, and to work with realistic parameter values, we adopt a kinematic flow field to account for the different spatial and temporal scales of turbulent motions. The dynamics of the population density are described by an advection-reaction-diffusion model with a spatially heterogeneous growth term proportional to sunlight availability. We explore the role of fluid transport by progressively increasing the complexity of the flow in terms of spatial and temporal scales. We find that, due to the large-scale circulation, phytoplankton accumulates in downwelling regions and its growth is reduced, confirming previous indications in slightly different conditions. We then explain the observed phenomenology in terms of a plankton filament model. Moreover, by contrasting the results in our different flow cases, we show that the large-scale coherent structures have an overwhelming importance. Indeed, we find that smaller-scale motions only quite weakly affect the dynamics, without altering the general mechanism identified. Such results are relevant for parameterizations in numerical models of phytoplankton life cycles in realistic oceanic flow conditions.
description: 12 pages, 9 figures
Von METS zu Manifest
Creators: name: Maus, David
Publisher: name: Zenodo
Year: 2021
Subjects: IIIF
METS
Kitodo

description: Das Internal Image Operability Framework (IIIF) entwickelt sich zu einem de facto-Standard für die Publikation von Bilddaten und Bildmetadaten im nationalen wie internationalen Kontext. Die Kitodo-Community verfügt in Gestalt der METS-, MODS- und TEI-Anwendungsprofile für digitalisierte Medien über die besten Voraussetzungen, IIIF Manifeste als neues Metadatenformat zu bedienen. Eine Möglichkeit, IIIF-Manifeste für unsere Digitalisate bereitzustellen, besteht darin, die benötigen Bildmetadaten durch eine dynamische Transformation zu erzeugen und über einen REST-Webservice auszuliefern.
A simple way of unifying the formulas for the Coulomb's law and Newton's law of the universal gravitation: An approach based on membranes
Creators: name: Zegarra, Lizandro B. R.
name: Gutierrez, Milton C.
name: Obeso, Fidel. A. V.
name: Quispe, Luis T.
name: Armas, L. E. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this work, a new approach is presented with the aim of showing a simple way of unifying the classical formulas for the forces of the Coulomb's law of electrostatic interaction ($F_C$) and the Newton's law of universal gravitation $(F_G)$. In this approach, these two forces are of the same nature and are ascribed to the interaction between two membranes that oscillate according to different curvature functions with the same spatial period $ξπ/k$ where $ξ$ is a dimensionless parameter and $k$ a wave number. Both curvature functions are solutions of the classical wave equation with wavelength given by the de Broglie relation. This new formula still keeps itself as the inverse square law, and it is like $F_C$ when the dimensionless parameter $ξ=274$ and like $F_G$ when $ξ= 1.14198$x$10^{45}$. It was found that the values of the parameter $ξ$ quantize the formula from which $F_C$ and $F_G$ are obtained as particular cases.
description: 31 pages
Generalized Elliott-Yafet theory of electron spin relaxation in metals: the origin of the anomalous electron spin life-time in MgB2
Creators: name: Simon, F.
name: Dora, B.
name: Muranyi, F.
name: Janossy, A.
name: Garaj, S.
name: Forro, L.
name: Bud'ko, S.
name: Petrovic, C.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The temperature dependence of the electron spin relaxation time in MgB2 is anomalous as it does not follow the temperature dependence of the resistivity above 150 K, it has a maximum around 400 K, and it decreases for higher temperatures. This violates the well established Elliot-Yafet theory of electron spin relaxation in metals. We show that the anomaly occurs when the quasi-particle scattering rate (in energy units) becomes comparable to the energy difference between the conduction- and a neighboring band. We find that the anomalous behavior is related to the unique band structure of MgB$_2$ and the large electron-phonon coupling. The saturating spin-lattice relaxation can be regarded as the spin transport analogue of the Ioffe-Regel criterion of electron transport.
A Model Of Inflationary Cosmology Without Singularity
Creators: name: Cai, Yi-Fu
name: Qiu, Tao-tao
name: Xia, Jun-Qing
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this letter, we propose a model of inflationary cosmology with a bounce preceded and study its primordial curvature perturbations. Our model gives rise to a primordial power spectrum with a feature of oscillation on large scales compared with the nearly scale-invariant spectrum generated by the traditional slow rolling inflation model. We will show this effect changes the Cosmic Microwave Background (CMB) temperature power spectrum and the Large Scale Structure (LSS) matter power spectrum. And further with a detailed simulation we will point out this signal is detectable to the forthcoming observations, such as PLANCK and LAMOST.
description: 4 pages, 4 figures
Heavy Quark Production from Jet Conversions in a Quark-Gluon Plasma
Creators: name: Liu, W.
name: Fries, R. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recently, it has been demonstrated that the chemical composition of jets in heavy ion collisions is significantly altered compared to jets in the vacuum. This signal can be used to probe the medium formed in nuclear collisions. In this study we investigate the possibility that fast light quarks and gluons can convert to heavy quarks when passing through a quark gluon plasma. We study the rate of light to heavy jet conversions in a consistent Fokker-Planck framework and investigate their impact on the production of high-$p_T$ charm and bottom quarks at RHIC and LHC.
description: 5 pages, 7 figures
In Silico World - D6.4 Open source software for rule-based data sharing
Creators: name: Zhyhulin, Taras
name: Zając, Karol
name: Meizner, Jan
Publisher: name: Zenodo
Year: 2024

description: The purpose of this deliverable is to report on the data sharing and publishing framework that has been developed in the context of WP6 of the ISW project, to ensure that research data is coherently managed.

The data management tools, focus of this report, include platforms for the upload of input data to HPC resources, automatic marshalling of such data on HPC clusters, referencing data items for processing and downloading by end users, staging out output data to external repositories where they can be accessed by collaborating scientists, and tools for publishing and referencing research data in scientific publications and otherwise. Additionally, the report describes the data-sharing practices and strategies for community involvement.

This document builds on previous documentation developed in WP6; particularly Deliverable 6.2 - Scalability strategies report, which details the ISW research workflows and means by which they are submitted to, and processed by, the available computational infrastructure. D6.2 also contains a description of the Model Execution Environment (MEE) (1), which is used to manage computational workflows in the context of ISW. This report describes the extension of the MEE tool with features required for advanced data-sharing capabilities, as well as the development of the infrastructure that supports these capabilities and enables data dissemination.

The developed instruments are compliant with Open Science principles and FAIR data management guidelines, aiming to benefit the global scientific community and support research within the In Silico World project.
title: Curing the common soul : rethinking Byzantine heresy through the literary motif of disease (11th-12th centuries)
Creators: name: Mincin, Elisabeth C.
Publisher: name: University of St Andrews
publisherIdentifier: https://ror.org/02wn5qz54
publisherIdentifierScheme: ROR
Year: 2015

description: This thesis explores the literary topos in which heresy is defined in terms of disease, focusing particular attention on the reign of the Byzantine emperor Alexios I Komnenos (1081-1118). By examining the portrayals of two heretics – the philosopher Ioannes Italos and the dualist Bogomil heresiarch Basileios – in a body of interrelated source material, conclusions are drawn related to the contemporary thought-world, which influenced the authors, their works and their understanding of the heterodox threat. This, in turn, is used to gain insight into the contemporary dynamics of imperial propaganda and power.

There are four main chapters, the first of which discusses the methodological approach adopted throughout this study. This section treats various questions related to the problems inherent in heresy scholarship, such as the ever-changing definition of ‘heresy’ and the use of source material that is fundamentally antagonistic towards the heretical subject. The second chapter traces the transmission of the focal topos, ‘heresy as disease’, within heresiology from its origins in the fourth-century Panarion of the bishop Epiphanios of Salamis up to the twelfth century, where it is found used prevalently by the court of Alexios I. Chapter three then offers a detailed analysis of the primary sources that are employed in the case studies of Italos and Basileios: Anna Komnene’s Alexias, Euthymios Zygabenos’s Panoplia Dogmatike, the Synodikon of Orthodoxy and trial proceedings preserved from the synodal examination of Italos. The final chapter explores the surviving presentations of both men – their depictions as ‘outsiders’ and the specific association developed between their teachings and disease – within the context of the newly emerging and insecure Komnenian dynasty. ‘Heresy as disease’ is found to transmit an ideological framework, allowing Alexios to reinforce his unstable position by capitalising on the image of the great Orthodox doctor, providing a cure for the common soul.
Pure emitter dephasing : a resource for advanced solid-state single photon sources
Creators: name: Auffèves, Alexia
name: Gérard, Jean-Michel
name: Poizat, Jean-Philippe
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We have computed the spectrum emitted spontaneously by a quantum dot coupled to an arbitrarily detuned single mode cavity, taking into account pure dephasing processes. We show that if the emitter is incoherent, the cavity can efficiently emit photons with its own spectral characteristics. This effect opens unique opportunities for the development of devices exploiting both cavity quantum electrodynamics effects and pure dephasing, such as wavelength stabilized single photon sources robust against spectral diffusion.
description: 5 pages, 3 figures
Nulling and subpulse drifting in PSR J1727-2739
Creators: name: Rejep, Rukiye
name: Wang, N.
name: Yan, W. M.
name: Wen, Z. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper, we investigate the emission properties of PSR J1727-2739, whose mean pulse profile has two main components, by analysing five single-pulse observations made using the Parkes 64-m radio telescope with a central frequency of 1369 MHz between 2014 April and October. The total observation time is about 6.1 hours which contains 16718 pulses after removal of radio frequency interference (RFI). Previous studies reveal that PSR J1727-2739 exhibits both nulling and subpulse drifting. We estimate the nulling fraction to be 66%, which is consistent with previously published results. In addition to the previously known subpulse drifting in the leading component, we also explore the drifting properties for the trailing component. We observe two distinct drift modes whose vertical drift band separations ($P_{3}$) are consistent with earlier studies. We find that both profile components share the same drift periodicity $P_{3}$ in a certain drift mode, but the measured horizontal separations ($P_{2}$) are quite different for them. That is, PSR J1727-2739 is a pulsar showing both changes of drift periodicity $P_{3}$ between different drift modes and drift rate variations between components in a given drift mode. Pulsars exhibiting nulling along with drift mode changing, such as PSR J1727-2739, give an unique opportunity to investigate the physical mechanism of these phenomena.
description: 10 pages, 15 figures
The Rapidly Flaring Afterglow of the Very Bright and Energetic GRB 070125
Creators: name: Updike, Adria C.
name: Haislip, Joshua B.
name: Nysewander, Melissa C.
name: Fruchter, Andrew S.
name: Kann, D. Alexander
name: Klose, Sylvio
name: Milne, Peter A.
name: Williams, G. Grant
name: Zheng, Weikang
name: Hergenrother, Carl W.
name: Prochaska, Jason X.
name: Halpern, Jules P.
name: Mirabal, Nestor
name: Thorstensen, John R.
name: van der Horst, Alexander J.
name: Starling, Rhaana L. C.
name: Racusin, Judith L.
name: Burrows, David N.
name: Kuin, N. P. M.
name: Roming, Peter W. A.
name: Bellm, Eric
name: Hurley, Kevin
name: Li, Weidong
name: Filippenko, Alexei V.
name: Blake, Cullen
name: Starr, Dan
name: Falco, Emilio E.
name: Brown, Warren R.
name: Dai, Xinyu
name: Deng, Jinsong
name: Xin, Liping
name: Qiu, Yulei
name: Wei, Jianyan
name: Urata, Yuji
name: Nanni, Domenico
name: Maiorano, Elisabetta
name: Palazzi, Eliana
name: Greco, Giuseppe
name: Bartolini, Corrado
name: Guarnieri, Adriano
name: Piccioni, Adalberto
name: Pizzichini, Graziella
name: Terra, Federica
name: Misra, Kuntal
name: Bhatt, B. C.
name: Anupama, G. C.
name: Fan, X.
name: Jiang, L.
name: Wijers, Ralph A. M. J.
name: Reichart, Dan E.
name: Eid, Hala A.
name: Bryngelson, Ginger
name: Puls, Jason
name: Goldthwaite, R. C.
name: Hartmann, Dieter H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on multi-wavelength observations, ranging from the X-ray to radio wave bands, of the IPN-localized gamma-ray burst GRB 070125. Spectroscopic observations reveal the presence of absorption lines due to O I, Si II, and C IV, implying a likely redshift of z = 1.547. The well-sampled light curves, in particular from 0.5 to 4 days after the burst, suggest a jet break at 3.7 days, corresponding to a jet opening angle of ~7.0 degrees, and implying an intrinsic GRB energy in the 1 - 10,000 keV band of around E = (6.3 - 6.9)x 10^(51) erg (based on the fluences measured by the gamma-ray detectors of the IPN network). GRB 070125 is among the brightest afterglows observed to date. The spectral energy distribution implies a host extinction of Av < 0.9 mag. Two rebrightening episodes are observed, one with excellent time coverage, showing an increase in flux of 56% in ~8000 seconds. The evolution of the afterglow light curve is achromatic at all times. Late-time observations of the afterglow do not show evidence for emission from an underlying host galaxy or supernova. Any host galaxy would be subluminous, consistent with current GRB host-galaxy samples. Evidence for strong Mg II absorption features is not found, which is perhaps surprising in view of the relatively high redshift of this burst and the high likelihood for such features along GRB-selected lines of sight.
description: 50 pages, 9 figures, 5 tables Accepted to the Astrophysical Journal
Data for the classes: requirements, hurdles and ideas for using CH data in DH classrooms
Creators: name: Scholger, Walter
Publisher: name: Zenodo
Year: 2021
Subjects: Digital Humanities
Digital Cultural Heritage
DH pedagogy
DH strategy

description: Presentation given at the ]Openness[ ONB LABS SYMPOSIUM 2021 hosted by the Austrian National Library on 24 November 2021. (https://www.eventbrite.at/e/onb-labs-symposium-2021-registration-205051483507)
Pregroup Grammars, their Syntax and Semantics
Creators: name: Sadrzadeh, Mehrnoosh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences
subject: I.2.7

description: Pregroup grammars were developed in 1999 and stayed Lambek's preferred algebraic model of grammar. The set-theoretic semantics of pregroups, however, faces an ambiguity problem. In his latest book, Lambek suggests that this problem might be overcome using finite dimensional vector spaces rather than sets. What is the right notion of composition in this setting, direct sum or tensor product of spaces?
description: https://doi.org/10.1007/978-3-030-66545-6_1
Horizons vs. singularities in spherically symmetric space-times
Creators: name: Bronnikov, K. A.
name: Elizalde, E.
name: Odintsov, S. D.
name: Zaslavskii, O. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss different kinds of Killing horizons possible in static, spherically symmetric configurations and recently classified as "usual", "naked" and "truly naked" ones depending on the near-horizon behavior of transverse tidal forces acting on an extended body. We obtain necessary conditions for the metric to be extensible beyond a horizon in terms of an arbitrary radial coordinate and show that all truly naked horizons, as well as many of those previously characterized as naked and even usual ones, do not admit an extension and therefore must be considered as singularities. Some examples are given, showing which kinds of matter are able to create specific space-times with different kinds of horizons, including truly naked ones. Among them are fluids with negative pressure and scalar fields with a particular behavior of the potential. We also discuss horizons and singularities in Kantowski-Sachs spherically symmetric cosmologies and present horizon regularity conditions in terms of an arbitrary time coordinate and proper (synchronous) time. It turns out that horizons of orders 2 and higher occur in infinite proper times in the past or future, but one-way communication with regions beyond such horizons is still possible.
description: 22 pages, 1 figure. Some comments added, misprints corrected. Final version appearing in PRD
Injection to the pick-up ion regime from high energies and induced ion power laws
Creators: name: Fahr, H. -J.
name: Chashei, I. V.
name: Verscharen, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Though pick-up ions (PUIs) are a well known phenomenon in the inner heliosphere their phase-space distribution nevertheless is a theoretically unsettled problem. Especially the question of how pick-up ions form their suprathermal tails, extending to far above their injection energies, still now is unsatistactorily answered. Though Fermi-2 velocity diffusion theories have revealed that such tails are populated, they nevertheless show that resulting population densities are much less than seen in observations showing power-laws with a velocity index of "-5". We first investigate here, whether or not observationally suggested power-laws can be the result of a quasi-equilibrium state between suprathermal ions and magnetohydrodynamic turbulences in energy exchange with eachother. We demonstrate that such an equilibrium cannot be established, since it would require too high pick-up ion pressures enforcing a shock-free deceleration of the solar wind. We furthermore show that Fermi-2 type energy diffusion in the outer heliosphere is too inefficient to determine the shape of the distribution function there. As we can show, however, power-laws beyond the injection threshold can be established, if the injection takes place at higher energies of the order of 100 keV. As we demonstrate here, such an injection is connected with modulated anomalous cosmic ray (ACR) particles at the lower end of their spectrum when they again start being convected outwards with the solar wind. Therefore, we refer to these particles as ACR-PUIs. In our quantitative calculation of the pick-up ion spectrum resulting under such conditions we in fact find again power-laws, however with a velocity power index of "-4" and fairly distance-independent spectral intensities.
description: 9 pages, one figure, accepted for publication in A&A
Adaptive Affinity Propagation Clustering
Creators: name: Wang, Kaijun
name: Zhang, Junying
name: Li, Dan
name: Zhang, Xinna
name: Guo, Tao
Publisher: name: arXiv
Year: 2008
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Affinity propagation clustering (AP) has two limitations: it is hard to know what value of parameter 'preference' can yield an optimal clustering solution, and oscillations cannot be eliminated automatically if occur. The adaptive AP method is proposed to overcome these limitations, including adaptive scanning of preferences to search space of the number of clusters for finding the optimal clustering solution, adaptive adjustment of damping factors to eliminate oscillations, and adaptive escaping from oscillations when the damping adjustment technique fails. Experimental results on simulated and real data sets show that the adaptive AP is effective and can outperform AP in quality of clustering results.
description: an English version of original paper
Augmented concurrent error information and the acquisition of the continuous gross motor skill of forward outside edges in figure skating
Creators: name: Russell, Susan Leilani
Publisher: name: University of British Columbia
Year: 2010

description: An experiment was designed to test the effects of increased availability of FB cues through the use of augmented concurrent error information on the acquisition of the continuous, gross motor skill of consecutive forward outside edges in figure skating. Each of 2 groups of 10 Ss per group skated 20 trials, consisting of 6 consecutive outside edges, on each of 2 days. Percent time spent on edge was measured as the dependent variable. In addition to verbal KR and instructional information, received from an instructor working in a double blind condition, the experimental group also received immediate, concurrent, response generated error information from a telemetric monitoring device. On day 2, all subjects from both groups performed an additional 10 trials, without the aid of KR, instructional information, or information from the monitoring device. Two hypotheses were tested. Hypothesis 1, which stated that subjects having increased accessibility to relevant FB cues would show a faster rate of skill acquisition, was supported by the results of this study and is in keeping with closed-loop motor control theory. Hypothesis 2, which stated that artificially enhancing error information does not inhibit progress to the motor stage of skill acquisition as reflected in performance maintenance when KR is withdrawn, was also supported by the results. There was no significant change in performance when KR and the telemetric monitoring device were withdrawn on Day 2 of the experiment.
Scalar radius of the pion in the Kroll-Lee-Zumino renormalizable theory
Creators: name: Dominguez, C. A.
name: Loewe, M.
name: Willers, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The Kroll-Lee-Zumino renormalizable Abelian quantum field theory of pions and a massive rho-meson is used to calculate the scalar radius of the pion at next to leading (one loop) order in perturbation theory. Due to renormalizability, this determination involves no free parameters. The result is $_s = 0.40 {fm}^2$. This value gives for $\bar{\ell}_4$, the low energy constant of chiral perturbation theory, $\bar{\ell}_4 = 3.4$, and $F_π/F = 1.05$, where F is the pion decay constant in the chiral limit. Given the level of accuracy in the masses and the $ρππ$ coupling, the only sizable uncertainty in this result is due to the (uncalculated) NNLO contribution.
On apparent faster-than-light behavior of moving electric fields
Creators: name: D'Abramo, Germano
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: For every observer, however distant, the electric field of a uniformly moving charge is always directed away from, or points towards, the instantaneous present position of the charge and not away from, or towards, the retarded position at which the observer sees it (due to the finite speed of light). This fact is a well-established consequence of, among others, the application of the Liénard-Wiechert potentials, and its significance for fundamental physics is probably not fully appreciated. Here we show how and why this property has non-negligible consequences for what we take for granted about the relativity of simultaneity and faster-than-light communication. In particular, if we consider two opposite electric charges whose distance shrinks to zero at a constant velocity (shrinking electric dipole), then the cancellation of the total field seems to be instantaneous everywhere in space and in every inertial reference frame. A simple variant of the shrinking electric dipole setup appears to allow a sort of faster-than-light communication of information. Our results provide simple theoretical support to the conclusions of recent experiments on the propagation speed of Coulomb and magnetic fields. It would also be interesting to explore any possible connection between our findings and quantum non-locality.
description: This is a pre-print of an article published in Eur. Phys. J. Plus 136, 301 (2021)
BIO-MOLECULAR TRANSPORTATION VIA DNA NANOPORES IN LIVE CELL SYSTEM AND THEIR BIO-APPLICATIONS
Creators: name: Um, Sang hoon
Publisher: name: Purdue University Graduate School
Year: 2025
Subjects: classificationCode: 400302
subject: Biomaterials
classificationCode: 310199
subject: Biochemistry and cell biology not elsewhere classified

description: The integration of DNA nanopores as synthetic channels within live cell membranes marks a pivotal advancement in biomedical science. These precisely engineered and highly programmable structures enable the selective and efficient transport of biomolecules across cellular barriers, offering a powerful alternative to conventional delivery mechanisms. By harnessing the inherent programmability, structural tunability, and biocompatibility of DNA, these nanopores provide customized solutions for targeted molecular transport. Crucially, DNA nanopores address key limitations of existing pore-forming technologies, including reliance on endocytosis machinery, the restricted size range of transmembrane proteins, and biocompatibility concerns. Their ability to mediate the transport of diverse biomolecules—including small molecules and proteins—across both prokaryotic and eukaryotic membranes underscores their versatility and functional efficacy. This technology not only enhances our understanding of membrane transport mechanisms but also opens new avenues for therapeutic applications, such as precision drug delivery, biosensing, and synthetic biology. Through a detailed exploration of DNA nanopore functionality in live cell systems, this study contributes to the development of next-generation tools for biomedical research and translational medicine.
Letter from Kathleen Raine to Robin Skelton, May 23, [between 1953 and 1990]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter, Raine discusses poems that could be published, and Skelton as a poet.
Three-dimensional ferromagnetism and magnetotransport in van der Waals Mn-intercalated tantalum disufide
Creators: name: Liu, Yu
name: Hu, Zhixiang
name: Stavitski, Eli
name: Attenkofer, Klaus
name: Petrovic, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Van der Waals (vdW) ferromagnets are an important class of materials for spintronics applications. The recent discovery of atomically vdW magnets CrI$_3$ and Cr$_2$Ge$_2$Te$_6$ has triggered a renaissance in the area of two-dimensional (2D) magnetism. Herein we systematically studied 2H-Mn$_{0.28}$TaS$_2$ single crystal, a 2D vdW ferromagnet with $T_c$ $\sim$ 82.3 K and a large in-plane magnetic anisotropy. Mn $K$-edge x-ray absorption spectroscopy was measured to provide information on its electronic state and local atomic environment. The detailed magnetic isotherms measured in the vicinity of $T_c$ indicates that the spin coupling inside 2H-Mn$_{0.28}$TaS$_2$ is of a three-dimensional (3D) Heisenberg-type coupled with the attractive long-range interaction between spins that decay as $J(r)\approx r^{-4.85}$. Both resistivity $ρ(T)$ and thermopower $S(T)$ exhibit anomalies near $T_c$, confirming that the hole-type transport carriers strongly interact with local moments. An unusual angle-dependent magnetoresistance is further observed, suggesting a possible field-induced novel magnetic structure.
Uniform forcing and immune sets in graphs and hypergraphs
Creators: name: Fàbrega, Josep
name: Martí-Farré, Jaume
name: Muñoz, Xavier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C65

description: Zero forcing is an iterative coloring process on a graph that has been widely used in such different areas as the modelling of propagation phenomena in networks and the study of minimum rank problems in matrices and graphs. This paper deals with zero forcing on hypergraphs. (Representing a network by a hypergraph allows us to account for its community structure and for more general interactions between different subsets of nodes.) We consider two natural generalizations to hypergraphs of zero forcing on graphs (one of them already known) and, for each one of these generalizations we look into two clutters that play a significant role in the forcing process: the clutter of minimal forcing sets and the one of minimal immune sets. A formulation of immune sets in terms of neighbourhoods (hence without making reference to the iterative zero forcing process) is presented, highlighting the different behaviour of the distinct forcing rules. Moreover, we obtain the families of minimal forcing and minimal immune sets in the case of complete hypergraphs and we provide a full characterization of forcing and immune uniform clutters, both in the graph and in the hypergraph case.
description: 19 pages, 3 figures, 2 tables
Electron Shock Surfing Acceleration in Multidimensions: Two-dimensional Particle-In-Cell Simulation of Collisionless Perpendicular Shock
Creators: name: Amano, Takanobu
name: Hoshino, Masahiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Electron acceleration mechanism at high Mach number collisionless shocks propagating in a weakly magnetized medium is investigated by a self-consistent two-dimensional particle-in-cell simulation. Simulation results show that strong electrostatic waves are excited via the electron-ion electrostatic two-stream instability at the leading edge of the shock transition region as in the case of earlier one-dimensional simulations. We observe strong electron acceleration that is associated with the turbulent electrostatic waves in the shock transition region. The electron energy spectrum in the shock transition region exhibits a clear power-law distribution with spectral index of $2.0 {\rm -} 2.5$. By analyzing the trajectories of accelerated electrons, we find that the acceleration mechanism is very similar to shock surfing acceleration of ions. In contrast to the ion shock surfing, however, the energetic electrons are reflected by electron-scale electrostatic fluctuations in the shock transition region, but not by the ion-scale cross-shock electrostatic potential. The reflected electrons are then accelerated by the convective electric field in front of the shock. We conclude that the multidimensional effects as well as the self-consistent shock structure are essential for the strong electron acceleration at high Mach number shocks.
description: 21 pages, 8 figures, accepted for publication in ApJ
Collapse of turbulent massive cores with ambipolar diffusion and hybrid radiative transfer II. Outflows
Creators: name: Mignon-Risse, R.
name: González, M.
name: Commerçon, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (Abridged) Most massive protostars exhibit bipolar outflows. Nonetheless, there is no consensus regarding the mechanism at the origin of these outflows, nor on the cause of the less-frequently observed monopolar outflows. We aim to identify the origin of early massive protostellar outflows, focusing on the combined effects of radiative transfer and magnetic fields in a turbulent medium. We use four state-of-the-art radiation-magnetohydrodynamical simulations following the collapse of massive 100 Msun pre-stellar cores with the Ramses code. Turbulence is taken into account via initial velocity dispersion. We use a hybrid radiative transfer method and include ambipolar diffusion. We find that turbulence delays the launching of outflows, which appear to be mainly driven by magnetohydrodynamical processes. Magnetic tower flow and the magneto-centrifugal acceleration contribute to the acceleration and the former operates on larger volumes than the latter. Our finest resolution, 5 AU, does not allow us to get converged results on magneto-centrifugally accelerated outflows. Radiative acceleration takes place as well, dominates in the star vicinity, enlarges the outflow extent, and has no negative impact on the launching of magnetic outflows (up to M~17 Msun, L~1e5 Lsun). The associated opening angles (20-30 deg when magnetic fields dominate) suggest additional (de-)collimating effects to meet observational constraints. Outflows are launched nearly perpendicular to the disk and are misaligned with the initial core-scale magnetic fields, in agreement with several observational studies. In the most turbulent run, the outflow is monopolar. We conclude that magnetic processes dominate the acceleration of massive protostellar outflows up to ~17 Msun, against radiative processes. Turbulence perturbs the outflow launching and is a possible explanation for monopolar outflows.
description: Accepted for publication in A&A, 20 pages, 15 figures
Polaronic transport and thermoelectricity in Mn$_3$Si$_2$Te$_6$ single crystals
Creators: name: Liu, Yu
name: Hu, Zhixiang
name: Abeykoon, Milinda
name: Stavitski, Eli
name: Attenkofer, Klaus
name: Bauer, Eric D.
name: Petrovic, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We carried out a comprehensive study of the structural, electrical transport, thermal and thermodynamic properties in ferrimagnetic Mn$_3$Si$_2$Te$_6$ single crystals. Mn and Te $K$-edge X-ray absorption spectroscopy and synchrotron powder X-ray diffraction were measured to provide information on the local atomic environment and the average crystal structure. The dc and ac magnetic susceptibility measurements indicate a second-order paramagnetic to ferrimagnetic transition at $T_c$ $\sim$ 74 K, which is further confirmed by the specific heat measurement. Mn$_3$Si$_2$Te$_6$ exhibits semiconducting behavior along with a large negative magnetoresistance of -87\% at $T_c$ and relatively high value of thermopower up to $\sim$ 10 mV/K at 5 K. Besides the rapidly increasing resistivity $ρ(T)$ and thermopower $S(T)$ below 20 K, the large discrepancy between activation energy for resistivity $E_ρ$ and thermopower $E_S$ above 20 K indicates the polaronic transport mechanism. Furthermore, the thermal conductivity $κ(T)$ of Mn$_3$Si$_2$Te$_6$ is notably rather low, comparable to Cr$_2$Si$_2$Te$_6$, and is strongly suppressed in magnetic field across $T_c$, indicating the presence of strong spin-lattice coupling, also similar with Cr$_2$Si$_2$Te$_6$.
Pairwise Emotional Relationship Recognition in Drama Videos: Dataset and Benchmark
Creators: name: Gao, Xun
name: Zhao, Yin
name: Zhang, Jie
name: Cai, Longjun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recognizing the emotional state of people is a basic but challenging task in video understanding. In this paper, we propose a new task in this field, named Pairwise Emotional Relationship Recognition (PERR). This task aims to recognize the emotional relationship between the two interactive characters in a given video clip. It is different from the traditional emotion and social relation recognition task. Varieties of information, consisting of character appearance, behaviors, facial emotions, dialogues, background music as well as subtitles contribute differently to the final results, which makes the task more challenging but meaningful in developing more advanced multi-modal models. To facilitate the task, we develop a new dataset called Emotional RelAtionship of inTeractiOn (ERATO) based on dramas and movies. ERATO is a large-scale multi-modal dataset for PERR task, which has 31,182 video clips, lasting about 203 video hours. Different from the existing datasets, ERATO contains interaction-centric videos with multi-shots, varied video length, and multiple modalities including visual, audio and text. As a minor contribution, we propose a baseline model composed of Synchronous Modal-Temporal Attention (SMTA) unit to fuse the multi-modal information for the PERR task. In contrast to other prevailing attention mechanisms, our proposed SMTA can steadily improve the performance by about 1\%. We expect the ERATO as well as our proposed SMTA to open up a new way for PERR task in video understanding and further improve the research of multi-modal fusion methodology.
ThermoElectric Transport Properties of a Chain of Quantum Dots with Self-Consistent Reservoirs
Creators: name: Jacquet, Philippe A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce a model for charge and heat transport based on the Landauer-Buttiker scattering approach. The system consists of a chain of $N$ quantum dots, each of them being coupled to a particle reservoir. Additionally, the left and right ends of the chain are coupled to two particle reservoirs. All these reservoirs are independent and can be described by any of the standard physical distributions: Maxwell-Boltzmann, Fermi-Dirac and Bose-Einstein. In the linear response regime, and under some assumptions, we first describe the general transport properties of the system. Then we impose the self-consistency condition, i.e. we fix the boundary values (T_L,μ_L) and (T_R,mu_R), and adjust the parameters (T_i,mu_i), for i = 1,...,N, so that the net average electric and heat currents into all the intermediate reservoirs vanish. This condition leads to expressions for the temperature and chemical potential profiles along the system, which turn out to be independent of the distribution describing the reservoirs. We also determine the average electric and heat currents flowing through the system and present some numerical results, using random matrix theory, showing that these currents are typically governed by Ohm and Fourier laws.
description: Minor changes (45 pages)
Time-Periodic Solutions of the Einstein's Field Equations
Creators: name: Kong, De-Xing
name: Liu, Kefeng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we develop a new method to find the exact solutions of the Einstein's field equations by using which we construct time-periodic solutions. The singularities of the time-periodic solutions are investigated and some new physical phenomena, such as the time-periodic event horizon, are found. The applications of these solutions in modern cosmology and general relativity are expected.
description: 8 pages, 3 figures
A comparison of respiratory exchange variables between untrained, aerobically and anaerobically trained individuals
Creators: name: Dunwoody, Douglas William
Publisher: name: University of British Columbia
Year: 2010

description: A Comparison of Respiratory Exchange Variables Among Untrained, Aerobically And Anaerobically Trained Individuals. The purpose of this study was to compare certain respiratory exchange variables among three solicted groups, namely aerobic (Ae), anaerobic (An), and untrained (Un) at their anaerobic threshold (AT), maximal aerobic and anaerobic capacities. Thirty college-aged males, ten per group, were tested on two different treadmill protocols to elicit the running velocity at the thresholds of anaerobic metabolism (Vtam), VO2 max and maximal anaerobic capacity from the Anaerobic Speed Test (AST). Significant differences among the three groups were found for: VO2 max. Ae: 65.8 > An: 59.6 > Un: 42.5 ml/kg-minute. Vtam Ae: 10.0 > An: 7.8 > Un: 6.1 miles/hour. VO2 at AT Ae: 49.2 > An: 41.3 > Un: 28.6 ml/kg-minute. Excess CO2 (ml/kg-min) elimination was used to determine the onset of anaerobiosis. No significant difference in excess CO2 elimination at VO2 max was evident in the three groups although the Un group demonstrated significantly higher values when compared to the An group at the AT (Un: 9.26 > An: 6.31 (Ae: 8.03) ml/kg-min). Significant differences were also demonstrated between the three groups for anaerobic capacity in the AST (An: 85.0 > Ae: 63.6 > Un: 39.5 seconds). The peak excess CO2 elimination values from the AST were higher for the An and Ae group when compared to the Un group (An: 35.6 & Ae: 32.8 > Un: 20.6 ml/kg-min). Findings in this study, related to differences in VO2 max, VO2 at AT, Vtam and anaerobic capacity (AST) are possibly attributable to the state of training of the three groups. Excess CO2 elimination as an indication of aerobic-anaerobic transition in energy metabolism may be useful in trained individuals but due to large variability in the excess CO2, the results from the untrained subjects were very difficult to interpret and further studies with excess CO2 in conjunction with end-tidal CO2 and lactate acid need be done.
On a degenerate parabolic equation arising in pricing of Asian options
Creators: name: Kim, Seick
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B65; 35K20; 91B28

description: We study a certain one dimensional, degenerate parabolic partial differential equation with a boundary condition which arises in pricing of Asian options. Due to degeneracy of the partial differential operator and the non-smooth boundary condition, regularity of the generalized solution of such a problem remained unclear. We prove that the generalized solution of the problem is indeed a classical solution.
description: 9 pages