cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-additivity of decoherence rates in superconducting qubits
Creators: name: Burkard, Guido
name: Brito, Frederico
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the relaxation and decoherence rates 1/T_1 and 1/T_2 of a qubit coupled to several noise sources are in general not additive, i.e., that the total rates are not the sums of the rates due to each individual noise source. To demonstrate this, we calculate the relaxation and pure dephasing rates 1/T_1 and 1/T_ϕof a superconducting (SC) flux qubit in the Born-Markov approximation in the presence of several circuit impedances Z_i using network graph theory and determine their deviation from additivity (the mixing term). We find that there is no mixing term in 1/T_ϕand that the mixing terms in 1/T_1 and 1/T_2 can be positive or negative, leading to reduced or enhanced relaxation and decoherence times T_1 and T_2. The mixing term due to the circuit inductance L at the qubit transition frequency ω_{01} is generally of second order in ω_{01}L/Z_i, but of third order if all impedances Z_i are pure resistances. We calculate T_{1,2} for an example of a SC flux qubit coupled to two impedances.
description: 5 pages, 2 figures
THE MAIN ISSUES OF IMPROVING MANAGEMENT IN THE CONTEXT OF CAPITAL MARKET DEVELOPMENT
Creators: name: Samarkand state university architecture and construction Komilova Mukammal Shavkatovna Jonibekov Ma'ruf
Publisher: name: Zenodo
Year: 2024

description: In this article, the main issues of improving management in the context of capital market development, as well as the implementation of a number of practically important works on improving the mechanisms of capital market operations in our republic in recent years, are considered.

Key words. Capital market, economic entities, privatization of state property, overnight operations, currency trading.
BRISK and SIFT-based Copy-Move Forgery Detection of Digital Images
Creators: name: Uma, Sumi
Publisher: name: TuEngr Group
Year: 2021
Subjects: Copy-move forgery (CMF)
BRISK algorithm
K-means clustering
Key-point technique
Image forgery
SIFT algorithm
CMFD.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 3, 12A3H: 1-12
Electromagnetic interactions in nucleus-nucleus and proton-proton collisions
Creators: name: Nystrand, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The strong electromagnetic fields associated with ultra-relativistic protons and nuclei correspond to an equivalent flux of photons. At the future Large Hadron Collider at CERN, the corresponding photon-nucleon center of mass energies will be higher than at any existing accelerator. The experimental and theoretical aspects of particle production in electromagnetic interactions at hadron colliders are reviewed.
description: 10 pages, 4 figures, 3 tables. Presented at the International Nuclear Physics Conference INPC2004, Gothenburg, Sweden, June 27 - July 2, 2004. To be published in Nucl. Phys. A
Asymptotically de Sitter Universe inside a Schwarzschild black hole
Creators: name: Alesci, Emanuele
name: Bahrami, Sina
name: Pranzetti, Daniele
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Extending our previous analysis, we study the interior of a Schwarzschild black hole derived from a partial gauge fixing of the full Loop Quantum Gravity Hilbert space, this time including the inverse volume and coherent state subleading corrections. Our derived effective Hamiltonian differs crucially from the ones introduced in the minisuperspace models. This distinction is reflected in the class of homogeneous bouncing geometries that replace the classical singularity and are labeled by a set of quantum parameters associated with the structure of coherent states used to derive the effective Hamiltonian. By fixing these quantum parameters through geometrical considerations, the post-bounce interior geometry reveals a high sensitivity to the value of the Barbero-Immirzi parameter $γ$. Surprisingly, we find that $γ\approx 0.274$ results in an asymptotically de Sitter geometry in the interior region, where now a cosmological constant is generated purely from quantum gravitational effects. The striking fact is the exact coincidence of this value for $γ$ with the one derived from the SU(2) black hole entropy calculations in Loop Quantum Gravity. The emergence of this value in two entirely unrelated theoretical frameworks and computational setups is strongly suggestive of deep ties between the area gap in Loop Quantum Gravity, black hole physics, and the observable Universe. In connection to the latter, we point out an intriguing relation between the measured value of the cosmological constant and the observed mass in the Universe from a proposal for a spin quantum number renormalization effect associated to the microscopic dynamics.
description: 31 pages, 3 figures; minor modifications to match published version
Statistics Application of the Dynamics Socio-Economic Processes: A Case of Russian Insurance Data
Creators: name: Alfira Kumratova, Elena Popova
Publisher: name: TuEngr Group
Year: 2021
Subjects: Statistical indicators
Pre-predictive analysis
R/S analysis
risk criteria
Hurst exponent
Insurance time series
Insurance risk.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 3, 12A3I: 1-8
Morphological characterization of common bean (Phaseolus vulgaris L.) genotypes grown in Kashmir Valley
Creators: name: Wani, Amir
Publisher: name: figshare
Year: 2020
Subjects: subject: 70107 Farming Systems Research
subject: FOS: Other agricultural sciences

description: Experimental material composed of 10 genotypes of common bean (Phaseolus vulgaris L.) { WB-494, SR-1,WB-939, WB-399, WB-640, WB-375, WB-967, WB-359, WB-335 & WB-933}selected for extensive studieslike morphological characterization, estimation of genetic variability and other genetic parameters, presence ofgenetic diversity at phenotypic. The experiment was conducted at Research Farm, SKUAST-K, Shalimar,Srinagar during 2014.Morphological traits of qualitative nature viz., growth habit, flower colour, days to 50% flowering, days tomaturity, no. of pods plant-1, no. of seeds pod-1, seed colour, 100 seed weight and grain yield (q ha-1) wereanalyzed which indicated presence of sufficient variability with respect to their traits. Analysis of variancerevealed presence of significant genetic variation among these genotypes for all the traits studied. Genotypiccoefficient of variation (GCV) was high for 100 seed weight, yield ha-1; moderate for no of pods plant-1 and forno of seeds pod-1 and low for 50% flowering and for days to maturity. For all the traits, estimates of phenotypiccoefficient of variation (PCV) were higher in magnitude than the corresponding estimates of genotypiccoefficient of variation (GCV), indicating the presence of environmental effect. Heritability estimates (broadsense) were high for 100 seed weight, yield ha-1.Estimation of genetic divergence using Mahalanobis D2 among bean genotypes was highly significant, whilethese genotypes got grouped into 4 clusters with cluster I having maximum of 4 genotypes and cluster III wasmonogenotypic. Inter-cluster distance was maximum between cluster-Ι and cluster-ΙV followed by cluster-ΙΙ andcluster-ΙV. The maximum divergence came from yield ha -1 (55.56%).
Enhanced repulsively bound atom pairs in topological optical lattice ladders
Creators: name: Flannigan, Stuart
name: Daley, Andrew J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There is a growing interest in using cold-atom systems to explore the effects of strong interactions in topological band structures. Here we investigate interacting bosons in a Cruetz ladder, which is characterised by topological flat energy bands where it has been proposed that interactions can lead to the formation of bound atomic pairs giving rise to pair superfluidity. By investigating realistic experimental implementations, we understand how the lattice topology enhances the properties of bound pairs giving rise to relatively large effective pair-tunnelling in these systems which can lead to robust pair superfluidity, and we find lattice supersolid phases involving only pairs. We identify schemes for preparation of these phases via time-dependent parameter variation and look at ways to detect and characterise these systems in a lattice. This work provides a starting point for investigating the interplay between the effects of topology, interactions and pairing in more general systems, with potential future connections to quantum simulation of topological materials.
description: 15 pages, 9 figures
Massless Gauge Bosons other than the Photon
Creators: name: Dobrescu, Bogdan A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gauge bosons associated with unbroken gauge symmetries, under which all standard model fields are singlets, may interact with ordinary matter via higher-dimensional operators. A complete set of dimension-six operators involving a massless U(1) field, gamma-prime, and standard model fields is presented. The mu to e gamma-prime decay, primordial nucleosynthesis, star cooling and other phenomena set lower limits on the scale of chirality-flip operators in the 1 - 15 TeV range, if the operators have coefficients given by the corresponding Yukawa couplings. Simple renormalizable models induce gamma-prime interactions with leptons or quarks at two loops, and may provide a cold dark matter candidate.
description: 5 pages
Determinants of sensitivity to BH3 mimetics in diffuse large B-cell lymphoma
Creators: name: Smith, Victoria
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: Diffuse large B-cell lymphoma (DLBCL) is an aggressive B-cell malignancy, with immuno-chemotherapy relapsed/refractory patients dying within months if left untreated. The inhibition of BCL2 by ABT-199 monotherapy has shown spectacular activity in chronic lymphocytic leukaemia (CLL). In contrast, ABT-199 monotherapy in DLBCL has been less successful despite high level expression of BCL2 in over 40% of cases. Thus, there is a requirement to identify biomarkers to allow the stratification of patients for sensitivity to BH3 mimetics.The data presented here identifies subgroups of DLBCL which exhibited either specific BCL2/ BCLXL/ MCL1 dependence, dual dependence or dependence on none of these proteins. Dependence could not be determined accurately via protein expression or using the functional assay BH3 profiling. However, anti-apoptotic protein dependence was associated with the direct sequestration of BAK, BAX and BIM.Although primary resistance is a major barrier to overcome before the widespread use of BH3 mimetics in DLBCL is possible, acquired resistance will likely also become a significant problem. DLBCL cell lines with acquired resistance to BH3 mimetics have been developed to investigate mechanisms of resistance. RCK8 was uniquely sensitive to BCLXL inhibition by A1331852 and was sensitive to ABT-737.The derived resistant cell lines are over 4000 times more resistant to their respective mimetics. The resistant cell lines displayed an upregulation of BCL2 and interestingly RCK8-A133R became 40 times more sensitive to ABT-199, indicating a switch in dependence to BCL2. Conversely, RCK8-737R response to ABT-199 did not change. RIVA was remarkably sensitive to ABT-199 and ABT-737 and the derived resistant cell lines were over 1000 times resistant to their respective compounds. Despite an increase in BCLXL mRNA expression, the cell lines did not become more sensitive to either BCLXL or MCL1 inhibition, indicating that the cell lines have not become more functionally dependent on these proteins.
String Memories ... Lost and Regained
Creators: name: Addazi, Andrea
name: Bianchi, Massimo
name: Firrotta, Maurizio
name: Marcianò, Antonino
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss stringy ${α'}$ corrections to the gravitational wave signal generated in the merging of two black holes. We model the merging with two BPS compact massive objects in the heterotic string, described by standard vertex operators or coherent states. Despite the expected cubic suppression in ${α'}$ w.r.t. the General Relativity result, at tree level the string corrections seem to leave a footprint or a memory on the gravitational wave signals within the sensitivity region of aLIGO/VIRGO and future interferometers. Including loop effects that broaden and destabilise the string resonances suggests a sort of lost stringy memory effect that can be regained through the analysis of the quasi normal modes in the ring-down phase.
description: 36 pages
LET-100: VAFB Request for SHPO Concurrence for Point Sal Road Repair Project
Creators: name: Zalud, Arianna
Year: 2000

description: This document is a letter from Vandenberg Air Force Base (VAFB) requesting concurrence from the California State Historic Preservation Office for the Point Sal Road Repair Project. Work for the project includes Planned culvert extension between boundaries of CA-SBA-954 and -955 and a retaining wall that could potentially affect CA-SBA-740, but affected area has already been heavily disturbed. All three sites are potentially eligible for listing on NRHP.
Die Marienharfe ('Argānona Weddāse)
Creators: name: Euringer, Sebastian
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 25 Nr. 1 (1928): Oriens christianus, Band 25/26, Heft 1
Modular domain organization of RNase E and PNPase
Creators: name: Miao, Xin
Publisher: name: University of British Columbia
Year: 2009

description: mRNA decay in Escherichia coli is carried out and controlled by concerted actions of a number of ribonucleases and other protein factors. In order to gain insights into the catalytic mechanisms and regulation involved in this important cellular process, we have utilized mutational analysis to study two key enzymes, RNase E and PNPase. RNase E is the endoribonuclease that initiates the degradation of bulk mRNA. We constructed a series of truncated Rne proteins to delineate the domains of RNase E. Our data show that the catalytic site of RNase E is located between residues 208 and 407. The first 207 residues, encompassing an SI domain, may play a role in maintaining structural integrity of the protein. We have also identified a minimal Arg-rich RNA-binding site between residues 608 and 622. Preliminary data indicate that the RBD plays a role in facilitating degradation and processing of some RNAs. In addition, this study confirms the findings by others that RNase E displays a modular domain organization. PNPase, a highly conserved protein in bacteria and plants, is one of two.major 3'-5' exoribonucleases degrading RNA fragments generated by RNase E cleavages. Based on the available sequence information, we constructed a series of deletion mutants to express individual domains and to study their functions. The data show that the catalytic site resides within the PH domain (residues 312-541). The PH' domain (residues 1-210), related to the PH domain, is required for structural integrity. Interestingly, Rne-binding activities are detected in both N-terminal portion (PH' domain plus the linker) of the Pnp protein and the C-terminal SI domain (residues 622-690). The mode of Pnp-Rne interaction is discussed. Our biochemical evidence correlates well with the published crystal structure of PNPase.
Cosmology and the Halo Occupation Distribution from Small-Scale Galaxy Clustering in the Sloan Digital Sky Survey
Creators: name: Abazajian, Kevork
name: Zheng, Zheng
name: Zehavi, Idit
name: Weinberg, David H.
name: Frieman, Joshua A.
name: Berlind, Andreas A.
name: Blanton, Michael R.
name: Bahcall, Neta A.
name: Brinkmann, J.
name: Schneider, Donald P.
name: Tegmark, Max
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the projected correlation function w_p(r_p) of a volume-limited subsample of the Sloan Digital Sky Survey (SDSS) main galaxy redshift catalogue to measure the halo occupation distribution (HOD) of the galaxies of the sample. Simultaneously, we allow the cosmology to vary within cosmological constraints imposed by cosmic microwave background experiments in a Lambda-CDM model. We find that combining w_p(r_p) for this sample alone with the observations by WMAP, ACBAR, CBI and VSA can provide one of the most precise techniques available to measure cosmological parameters. For a minimal flat six-parameter Lambda-CDM model with an HOD with three free parameters, we find Omega_m=0.278^{+0.027}_{-0.027}, sigma_8=0.812^{+0.028}_{-0.027}, and H_0=69.8^{+2.6}_{-2.6}km s^{-1} Mpc^{-1}; these errors are significantly smaller than from CMB alone and similar to those obtained by combining CMB with the large-scale galaxy power spectrum assuming scale-independent bias. The corresponding HOD parameters describing the minimum halo mass and the normalization and cut-off of the satellite mean occupation are M_min=(3.03^{+0.36}_{-0.36})x 10^{12} h^{-1} M_sun, M_1 = (4.58^{+0.60}_{-0.60})x 10^{13} h^{-1} M_sun, and kappa=4.44^{+0.51}_{-0.69}. When more parameters are added to the HOD model, the error bars on the HOD parameters increase because of degeneracies, but the error bars on the cosmological parameters do not increase greatly. Similar modeling for other galaxy samples could reduce the statistical errors on these results, while more thorough investigations of the cosmology dependence of nonlinear halo bias and halo mass functions are needed to eliminate remaining systematic uncertainties, which may be comparable to statistical uncertainties.
description: v2: includes an expanded modeling discussion, a test for halo spatial bias model dependence, and a small but non-negligible contribution from sample variance
Molossidae Gervais 1855
Creators: name: Monadjem, Ara
name: Richards, Leigh
name: Denys, Christiane
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Molossidae

description: Molossidae
Seven species of molossids have been recorded from Mt Nimba.
description: Published as part of Monadjem, Ara, Richards, Leigh & Denys, Christiane, 2016, An African bat hotspot: the exceptional importance of Mount Nimba for bat diversity, pp. 359-375 in Acta Chiropterologica 18 (2) on page 367, DOI: 10.3161/15081109ACC2016.18.2.005, http://zenodo.org/record/3942481
Packing minima and lattice points in convex bodies
Creators: name: Henk, Martin
name: Schymura, Matthias
name: Xue, Fei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Motivated by long-standing conjectures on the discretization of classical inequalities in the Geometry of Numbers, we investigate a new set of parameters, which we call \emph{packing minima}, associated to a convex body $K$ and a lattice $Λ$. These numbers interpolate between the successive minima of $K$ and the inverse of the successive minima of the polar body of $K$, and can be understood as packing counterparts to the covering minima of Kannan & Lovász (1988). As our main results, we prove sharp inequalities that relate the volume and the number of lattice points in $K$ to the sequence of packing minima. Moreover, we extend classical transference bounds and discuss a natural class of examples in detail.
description: 23 pages
3-Dimensional Simulations of the Reorganization of a Quark Star's Magnetic Field as Induced by the Meissner Effect
Creators: name: Ouyed, Rachid
name: Niebergal, Brian
name: Dobler, Wolfgang
name: Leahy, Denis
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a previous paper (Ouyed et al. 2004) we presented a new model for soft gamma-ray repeaters (SGR), based on the onset of colour superconductivity in quark stars. In this model, the bursts result from the reorganization of the exterior magnetic field following the formation of vortices that confine the internal magnetic field (the \mz effect). Here we extend the model by presenting full 3-dimensional simulations of the evolution of the inclined exterior magnetic field immediately following vortex formation. The simulations capture the violent reconnection events in the entangled surface magnetic field as it evolves into a smooth, more stable, configuration which consists of a dipole field aligned with the star's rotation axis. The total magnetic energy dissipated in this process is found to be of the order of $10^{44} \mathrm{erg}$ and, if it is emitted as synchrotron radiation, peaks typically at $280 \mathrm{keV}$. The intensity decays temporally in a way resembling SGRs and AXPs (anomalous X-ray pulsars), with a tail lasting from a few to a few hundred times the rotation period of the star, depending on the initial inclination between the rotation and dipole axis. One of the obvious consequences of our model's final state (aligned rotator) is the suppression of radio-emission in SGRs and AXPs following their bursting era. We suggest that magnetar-like magnetic field strength alone cannot be responsible for the properties of SGRs and AXPs, while a quark star entering the ``Meissner phase'' is compatible with the observational facts. We compare our model to observations and highlight our predictions.
description: 26 pages, 8 figures
Creation and Characterization of Matter-Wave Breathers
Creators: name: Luo, De
name: Jin, Yi
name: Nguyen, Jason H. V.
name: Malomed, Boris A.
name: Marchukov, Oleksandr V.
name: Yurovsky, Vladimir A.
name: Dunjko, Vanja
name: Olshanii, Maxim
name: Hulet, R. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We report the creation of quasi-1D excited matter-wave solitons, "breathers", by quenching the strength of the interactions in a Bose-Einstein condensate with attractive interactions. We characterize the resulting breathing dynamics and quantify the effects of the aspect ratio of the confining potential, the strength of the quench, and the proximity of the 1D-3D crossover for the 2-soliton breather. We furthermore demonstrate the complex dynamics of a 3-soliton breather created by a stronger interaction quench. Our experimental results, which compare well with numerical simulations, provide a pathway for utilizing matter-wave breathers to explore quantum effects in large many-body systems.
description: To be published in Phys. Rev. Lett
Reentrant metallic transition at a temperature above Tc at the breakdown of cooperative Jahn-Teller orbital order in perovskite manganites
Creators: name: Bhattacharya, Dipten
name: Maiti, H. S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report an interesting reentrant metallic resistivity pattern beyond a characteristic temperature T* which is higher than other such characteristic transition temperatures like T(c)(Curie point), T(N) (Neel point), T(CO) (charge order onset point) or T(OO) (orbital order onset point) in a range of rare-erath perovskite manganites (RE(1-x)A(x)MnO(3); RE = La, Nd, Y; A = Sr, Ca; x = 0.0-0.5). Such a behavior is normally observed in doped manganites with doping level (x) higher than the critical doping level x(c) (= 0.17-0.22) required for the metallic ground state to emerge and hence in a system where cooperative Jahn-Teller orbital order has already undergone a breakdown. However, the observation made in the La(1-x)Ca(x)MnO(3) (x = 0.0-0.5) series turns out to be an exception to this general trend.
description: 15 pages including 3 figures; pdf only
Drei griechische Passionsgesänge ägyptischer Liturgie
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 25 Nr. 1 (1928): Oriens christianus, Band 25/26, Heft 1
Diary of Anne Frank – a performance review by Manohar Khushalani
Creators: name: Khushalani, Manohar
Publisher: name: figshare
Year: 2020
Subjects: subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 190402 Creative Writing (incl. Playwriting)

description: A Review by Theatre Critic, Manohar Khushalani. Original Title: A face of fascism published in Pioneer on 31/12/2000 Ruchika Theatre Group is one of the oldest surviving theatre groups of Delhi. The reason is simple. It keeps regenerating itself. The Diary of Anne Frank was one such exercise in which, Feisal Alkazi, the director of the play, used an entirely inexperienced cast, inducted from the Little Actors Club. Obviously, therefore, there would be unevenness of talent, but viewed within those limitations The show put up at India Habitat Centre last week held together due to sheer sincerity of effort and excellent performance
Pion-photon transition form factor in LCSR and tests of asymptotics
Creators: name: Stefanis, N. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the pion-photon transition form factor (TFF) $F^{γ*γπ^0}(Q^2)$ using a state-of-the art implementation of light cone sum rules (LCSRs) within fixed-order QCD perturbation theory. The spectral density in the dispersion relation includes all currently known radiative corrections up to the next-to-next-to-leading-order (NNLO) and all twist contributions up to order six. Predictions for the TFF are obtained for various pion distribution amplitudes (DAs) of twist two, including two-loop evolution which accounts for heavy-quark mass thresholds. The influence of the main theoretical uncertainties is quantified in order to enable a more realistic comparison with the data. The characteristics of various pion DAs are analyzed in terms of the conformal coefficients $a_2$ and $a_4$ in comparison with the $1σ$ and $2σ$ error regions of the data and the most recent lattice constraints on $a_2$ with NLO and NNLO accuracy. Our results provide more stringent bounds on the variation of the pion DA and illuminate the corresponding asymptotic behavior of the calculated TFF.
description: 16 pages, 3 tables, 4 figures; derives partly from arXiv:1904.02631; text revised and expanded; more and updated figures; references added; discussion of new results. References added. V3 matches version accepted for publication in Physical Review D
Type-III Dirac Cones from Degenerate Directionally Flat Bands: Viewpoint from Molecular-Orbital Representation
Creators: name: Mizoguchi, Tomonari
name: Hatsugai, Yasuhiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a systematic method of creating type-III Dirac cones from degenerate directionally flat bands. Here, the directionally flat band means a completely dispersionless band only in a certain direction. The key strategy is to retain one of the directionally flat bands while making the other dispersive, by adding a perturbation having a selected form of a Hamiltonian matrix. Such a form of a perturbation is found by using the "molecular-orbital representation" which we have developed to describe flat-band models. The models thus obtained host type-III Dirac cones even without fine-tuning hopping parameters. To demonstrate the ubiquity of this method, we study concrete examples of two-band models and a four-band model.
description: 5 pages, 4 figures
Abundance Profiles and Kinematics of Damped Lyman-alpha Absorbing Galaxies at z < 0.65
Creators: name: Chen, Hsiao-Wen
name: Kennicutt, Robert C.
name: Rauch, Michael
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a spectroscopic study of six damped Lya absorption (DLA) systems at z<0.65, based on moderate-to-high resolution spectra of the galaxies responsible for the absorbers. Combining known metallicity measurements of the absorbers with known optical properties of the absorbing galaxies, we confirm that the low metal content of the DLA population can arise naturally as a combination of gas cross-section selection and metallicity gradients commonly observed in local disk galaxies. We also study the Tully-Fisher relation of the DLA-selected galaxies and find little detectable evidence for evolution in the disk population between z=0 and z~0.5. Additional results of our analysis are as follows. (1) The DLA galaxies exhibit a range of spectral properties, from post-starburst, to normal disks, and to starburst systems, supporting the idea that DLA galaxies are drawn from the typical field population. (2) Large rotating HI disks of radius 30 h^{-1} kpc and of dynamic mass M_dyn > 10^{11} h^{-1} M_sun appear to be common at intermediate redshifts. (3) Using an ensemble of six galaxy-DLA pairs, we derive an abundance profile that is characterized by a radial gradient of -0.041 +/- 0.012 dex per kiloparsec (or equivalently a scale length of 10.6 h^{-1} kpc) from galactic center to 30 h^{-1} kpc radius. (4) Adopting known N(HI) profiles of nearby galaxies and the best-fit radial gradient, we further derive an N(HI)-weighted mean metallicity _weighted = -0.50 +/- 0.07 for the DLA population over 100 random lines of sight, consistent with _weighted = -0.64 (-0.86, +0.40) observed for z~1 DLA systems from Prochaska et al. Our analysis demonstrates that the low metal content of DLA systems does not rule out the possibility that the DLA population trace the field galaxy population.
description: 57 pages, 17 figures, to appear in the ApJ 20 February 2005 issue; a pdf version of the paper with full-resolution figures is available at http://falcon.mit.edu/~hchen/public/tmp/dlachem.pdf
Adversarial-Prediction Guided Multi-task Adaptation for Semantic Segmentation of Electron Microscopy Images
Creators: name: Yi, Jiajin
name: Yuan, Zhimin
name: Peng, Jialin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Semantic segmentation is an essential step for electron microscopy (EM) image analysis. Although supervised models have achieved significant progress, the need for labor intensive pixel-wise annotation is a major limitation. To complicate matters further, supervised learning models may not generalize well on a novel dataset due to domain shift. In this study, we introduce an adversarial-prediction guided multi-task network to learn the adaptation of a well-trained model for use on a novel unlabeled target domain. Since no label is available on target domain, we learn an encoding representation not only for the supervised segmentation on source domain but also for unsupervised reconstruction of the target data. To improve the discriminative ability with geometrical cues, we further guide the representation learning by multi-level adversarial learning in semantic prediction space. Comparisons and ablation study on public benchmark demonstrated state-of-the-art performance and effectiveness of our approach.
FOOD SECURITY UPDATE: THE FOOD INDUSTRY'S RESPONSE TO ENSURING FOOD SECURITY AND SAFETY (PowerPoint Presentation)
Creators: name: Applebaum, Rhona S.
name: Applebaum, Rhona S.
Publisher: name: Unknown
Year: 2002
Subjects: Food Consumption/Nutrition/Food Safety
Food Security and Poverty

description: POWERPOINT PRESENTATION
MOSAIC: Modelling the cost-effectiveness of treatment options for the South African Covid-19 response: technical appendix
Creators: name: Cleary, Susan
name: Wilkinson, Tommy
name: Tchuem, Cynthia Tamandjou
name: Docrat, Sumaiyah
name: Besada, Donela
name: DAVIAUD, Emmanuelle
name: Geetesh Solanki
Publisher: name: University of Cape Town
Year: 2020
Subjects: subject: 140208 Health Economics
subject: FOS: Economics and business

description: This technical appendix has been prepared to clarify the framework, assumptions and input parameters of the MOSAIC models of the cost-effectiveness of treatment strategies for the South African COVID-19 response.
Vespertilionidae Gray 1821
Creators: name: Monadjem, Ara
name: Richards, Leigh
name: Denys, Christiane
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Vespertilionidae

description: Vespertilionidae
 A total of 20 species of vespertilionids have been recorded from Mt Nimba, including 13 pipistrelloids in the genera Hypsugo, Neoromicia and Pipistrellus (Fahr et al., 2006; Monadjem et al., 2013 a).
description: Published as part of Monadjem, Ara, Richards, Leigh & Denys, Christiane, 2016, An African bat hotspot: the exceptional importance of Mount Nimba for bat diversity, pp. 359-375 in Acta Chiropterologica 18 (2) on page 368, DOI: 10.3161/15081109ACC2016.18.2.005, http://zenodo.org/record/3942481
From Hard Spheres and Cubes to Nonequilibrium Maps with Thirty-Some Years of Thermostatted Molecular Dynamics
Creators: name: Hoover, William Graham
name: Hoover, Carol Griswold
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: This is our current research perspective on models providing insight into statistical mechanics. It is necessarily personal, emphasizing our own interest in simulation as it developed from the National Laboratories' work to the worldwide explosion of computation of today. We contrast the past and present in atomistic simulations, emphasizing those simple models which best achieve reproducibility and promote understanding. Few-body models with pair forces have led to today's "realistic" simulations with billions of atoms and molecules. Rapid advances in computer technology have led to change. Theoretical formalisms have largely been replaced by simulations incorporating ingenious algorithm development. We choose to study particularly simple, yet relevant, models directed toward understanding general principles. Simplicity remains a worthy goal, as does relevance. We discuss hard-particle virial series, melting, thermostatted oscillators with and without heat conduction, chaotic dynamics, fractals, the connection of Lyapunov spectra to thermodynamics, and finally simple linear maps. Along the way we mention directions in which additional modelling could provide more clarity and yet more interesting developments in the future.
description: 57 pages with 25 figures, fixed typographical errors, and with Richard Wheatley's tenth virial coefficients for squares and cubes included
Determinants of Household Participation in Rural Development Projects
Creators: name: Ngugi, Daniel
name: Mukundu, Denford
name: Epperson, James E.
name: Acheampong, Yvonne J.
name: Ngugi, Daniel
name: Mukundu, Denford
name: Epperson, James E.
name: Acheampong, Yvonne J.
Publisher: name: Unknown
Year: 2003
Subjects: Community/Rural/Urban Development

description: This paper provides evidence for determinants of households participation in rural development projects. Study findings are based on qualitative analysis and logistic estimation of a random utility model. Households with higher incomes appear less likely to participate; those with more labor are more likely. Availability of activities of interest to community members could enhance participation.
Measurement of $\bm{σ(p \bar p \to Z) \cdot}$Br$\bm{(Z \to ττ)}$ at $\bm{\sqrt{s}=}$1.96 TeV
Creators: name: D0 Collaboration
name: Abazov, V. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a measurement of the cross section for $Z$ production times the branching fraction to $τ$ leptons, $σ\cdot$Br$(Z\to τ^+ τ^-)$, in $p \bar p$ collisions at $\sqrt{s}=$1.96 TeV in the channel in which one $τ$ decays into $μν_μ ν_τ$, and the other into $\rm {hadrons} + ν_τ$ or $e ν_e ν_τ$. The data sample corresponds to an integrated luminosity of 226 pb$^{-1}$ collected with the DØdetector at the Fermilab Tevatron collider. The final sample contains 2008 candidate events with an estimated background of 55%. From this we obtain $σ\cdot$Br$(Z \to τ^+ τ^-)=237 \pm 15$(stat)$\pm 18$(sys)$ \pm 15$(lum) pb, in agreement with the standard model prediction.
Monte-Carlo simulations of overlap Majorana fermions
Creators: name: Piemonte, S.
name: Bergner, G.
name: López, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Supersymmetric Yang-Mills (SYM) theories in four dimensions exhibit many interesting non-perturbative phenomena that can be studied by means of Monte Carlo lattice simulations. However, the lattice regularization breaks supersymmetry explicitly, and in general a fine tuning of a large number of parameters is required to correctly extrapolate the theory to the continuum limit. From this perspective, it is important to preserve on the lattice as many symmetries of the original continuum action as possible. Chiral symmetry for instance prevents an additive renormalization of the fermion mass. A (modified) version of chiral symmetry can be preserved exactly if the Dirac operator fulfills the Ginsparg-Wilson relation. In this contribution, we present an exploratory non-perturbative study of N=1 supersymmetric Yang-Mills theory using the overlap formalism to preserve chiral symmetry at non-zero lattice spacings. N=1 SYM is an ideal benchmark toward the extension of our studies to more complex supersymmetric theories, as the only parameter to be tuned is the gluino mass. Overlap fermions allow therefore to simulate the theory without fine-tuning. We compare our approach to previous investigations of the same theory, and we present clear evidences for gluino condensation.
description: 23 pages, 10 figures
Hadron Masses in Medium and Neutron Star Properties
Creators: name: Ryu, C. Y.
name: Hyun, C. H.
name: Hong, S. W.
name: Jennings, B. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the properties of the neutron star with relativistic mean field models. We incorporate in the quantum hadrodynamics and in the quark-meson coupling models a possible reduction of meson masses in nuclear matter. The equation of state for neutron star matter is obtained and is employed in Oppenheimer-Volkov equation to extract the maximum mass of the stable neutron star. We find that the equation of state, the composition and the properties of the neutron stars are sensitive to the values of the meson masses in medium.
description: 18 pages, 5 figures and 2 tables. To be published in EPJA
Synthesis of lossless electric circuits based on prescribed Jordan forms
Creators: name: Figotin, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We advance here an algorithm of the synthesis of lossless electric circuits such that their evolution matrices have the prescribed Jordan canonical forms subject to natural constraints. Every synthesized circuit consists of a chain-like sequence of LC-loops coupled by gyrators. All involved capacitances, inductances and gyrator resistances are either positive or negative with values determined by explicit formulas. A circuit must have at least one negative capacitance or inductance for having a nontrivial Jordan block for the relevant matrix.
Anomaly Detection and Prototype Selection Using Polyhedron Curvature
Creators: name: Ghojogh, Benyamin
name: Karray, Fakhri
name: Crowley, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computational Geometry (cs.CG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We propose a novel approach to anomaly detection called Curvature Anomaly Detection (CAD) and Kernel CAD based on the idea of polyhedron curvature. Using the nearest neighbors for a point, we consider every data point as the vertex of a polyhedron where the more anomalous point has more curvature. We also propose inverse CAD (iCAD) and Kernel iCAD for instance ranking and prototype selection by looking at CAD from an opposite perspective. We define the concept of anomaly landscape and anomaly path and we demonstrate an application for it which is image denoising. The proposed methods are straightforward and easy to implement. Our experiments on different benchmarks show that the proposed methods are effective for anomaly detection and prototype selection.
description: Accepted (to appear) in Canadian Conference on Artificial Intelligence (Canadian AI conference) 2020, Springer. This version includes supplementary material for derivation of an equation
Economic Impacts of Restricted Animal Movements in Mexico Due to Increased Mexican Regional Bovine Health Criteria
Creators: name: Cunningham, Megan E.
name: Peel, Derrell S.
name: Cunningham, Megan E.
name: Peel, Derrell S.
Publisher: name: Unknown
Year: 2006
Subjects: Livestock Production/Industries

description: Tuberculosis restrictions on animal movement have important implications for Mexican producers and consumers as well as the U.S. beef cattle industry. The restrictions cause decreased Mexican cattle exports, increased domestic fed beef production, and decreased fed beef imports. The Mexican beef industry incurs greater costs due to increased interregional cattle and meat shipments and changes in regional beef cattle production in Mexico.
Simulating the Impact of a Molecular 'Decision-Process' on Cellular Phenotype and Multicellular Patterns in Brain Tumors
Creators: name: Athale, Chaitanya
name: Mansury, Yuri
name: Deisboeck, Thomas S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: Experimental evidence indicates that human brain cancer cells proliferate or migrate, yet do not display both phenotypes at the same time. Here, we present a novel computational model simulating this cellular decision-process leading up to either phenotype based on a molecular interaction network of genes and proteins. The model's regulatory network consists of the epidermal growth factor receptor (EGFR), its ligand transforming growth factor-a (TGFa), the downstream enzyme phospholipaseC-gamma (PLCg) and a mitosis-associated response pathway. This network is activated by autocrine TGFa secretion, and the EGFR-dependent downstream signaling this step triggers, as well as modulated by an extrinsic nutritive glucose gradient. Employing a framework of mass action kinetics within a multiscale agent-based environment, we analyze both the emergent multicellular behavior of tumor growth and the single-cell molecular profiles that change over time and space. Our results show that one can indeed simulate the dichotomy between cell migration and proliferation based solely on an EGFR decision network. It turns out that these behavioral decisions on the single cell level impact the spatial dynamics of the entire cancerous system. Furthermore, the simulation results yield intriguing experimentally testable hypotheses also on the sub-cellular level such as spatial cytosolic polarization of PLCg towards an extrinsic chemotactic gradient. Implications of these results for future works, both on the modeling and experimental side are discussed.
Contribution of platelet activating factor to myocardial ischemia-reperfusion injury
Creators: name: Loucks, Eric Barry
Publisher: name: University of British Columbia
Year: 2009

description: Myocardial ischemia-reperfusion (MIR) injury, which occurs during events such as myocardial infarction (MI) treated with reperfusion therapy, can cause substantial cardiovascular dysfunction, often leading to death during the first 24 hours. Preliminary evidence suggests that the inflammatory mediator platelet activating factor (PAF) may contribute substantially to MIR injury. However, there remains more to be learned about both the mechanism through which PAF alters cardiac function, and the contribution of PAF to MIR injury, in order to determine if PAF antagonism can be useful as treatment for MIR. Part 1: The relative concentration-dependent cardiac function responses to PAF in the isolated rat heart were investigated. It was found that low to high PAF concentrations (10 nM-10 μM) significantly increased coronary vascular resistance. Moderate to high PAF concentrations (1. μM-10 μM) significantly increased capillary permeability. Only a high concentration (10 μM) of PAF caused significant myocardial contractile depression and bradycardia. These effects were prevented by PAF antagonist TCV-309. Part 2: The contribution of PAF in the ischemic-reperfused ex vivo rabbit heart to (a) cardiac dysfunction during the first 5 h of reperfusion, and (b) apoptotic cell death in the heart, a previously unstudied form of injury, were investigated. Finally, it studied (c) the interrelationship of PAF and nitric oxide (NO), during MTR. It was shown that (a) PAF causes myocardial contractile depression and increases coronary vascular resistance through to 5 h reperfusion, (b) PAF can contribute to apoptotic cell death during MLR and (c) PAF can reduce the mRNA expression of an important enzyme that produces NO, namely endothelial nitric oxide (eNOS), thereby indicating that PAF and NO may be linked in MIR injury. Part 3: The contribution of PAF to MIR injury was studied in a clinically relevant animal model: in vivo swine managed similarly to patients undergoing reperfusion treatment for MI, and treated with a clinically used PAF antagonist (TCV-309) at a therapeutically-modeled time. The swine were survived for 8 days, in order to determine the previously unstudied long-term effects of treatment with PAF antagonist for myocardial infarction. It was found that PAF antagonist significantly improved systemic arterial blood pressure, reduced the requirements for inotropic and antiarrhythmic support and improved long-term survival. It is hoped that this information can provide a better understanding of the role of PAF in MIR injury, and will help in the consideration of PAF antagonism as treatment for myocardial infarction.