cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The field-induced interaction between non-resonant magnetic dipoles
Creators: name: Hu, Fang-qi
name: Zhao, Qing
name: Li, Sheng-Wen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We make a general derivation for the magnetic dipole-dipole interaction based on the mediation of the quantized electro-magnetic field. Due to the interaction with the dipoles, the dynamics of the field is added by a dipole field, which finally gives rise to the dipole-dipole interaction. Different from previous studies, the rotating-wave-approximation is no longer needed throughout this derivation, and our result naturally gives the interaction for non-resonant dipoles. Moreover, our derivation also gives the counter-rotating interaction terms, and even the mixed interaction terms between the permanent and transition dipoles. We notice that this field-induced interaction is associated with the interference of the virtual/real photons emitted from the two dipoles, thus the interaction strength could be influenced by the frequency difference of the two dipoles.
Homogenization of the vibro-acoustic transmission on perforated plates
Creators: name: Rohan, Eduard
name: Lukeš, Vladimír
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 35B27, 74Q05, 74F10

description: The paper deals with modelling of acoustic waves which propagate in inviscid fluids interacting with perforated elastic plates. The plate can be replaced by an interface on which transmission conditions are derived by homogenization of a problem describing vibroacoustic fluid-structure interactions in a transmission layer in which the plate is embedded. The Reissner-Mindlin theory of plates is adopted for periodic perforations designed by arbitrary cylindrical holes with axes orthogonal to the plate midplane. The homogenized model of the vibroacoustic transmission is obtained using the two-scale asymptotic analysis with respect to the layer thickness which is proportional to the plate thickness and to the perforation period. The nonlocal, implicit transmission conditions involve a jump in the acoustic potential and its normal one-side derivatives across the interface which represents the plate with a given thickness. The homogenized model was implemented using the finite element method and validated using direct numerical simulations of the non-homogenized problem. Numerical illustrations of the vibroacoustic transmission are presented.
description: This manuscript version is made available under the CC-BY-NC-ND 4.0 license
UBC Farm E-Business Plan: Growing an Online Presence
Creators: name: Clarke, Jacqueline
name: Fraser, Jordanna
name: Garrick, Glen
name: Gonzalez, Miguel
name: Max, Katherine
name: Quintanilla, Dixie
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Boundary States and Symplectic Fermions
Creators: name: Bredthauer, Andreas
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the set of boundary states in the symplectic fermion description of the logarithmic conformal field theory with central charge c=-2. We show that the thus constructed states correspond exactly to those derived under the restrictions of the maximal chiral symmetry algebra for this model, W(2,3,3,3). This connects our previous work to the coherent state approach of Kawai and Wheater.
description: LaTeX file, 1+11 pages, minor changes
title: Braunschweigische Anzeigen : offizielles Regierungs- und Anzeigeblatt. 35. Jahr 1779
Creators: name: :None
Publisher: name: Fürstliche Waisenhaus-Buchdruckerei
Year: 1779
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Braunschweigische Anzeigen
subject: 902

description: Braunschweigische Anzeigen: offizielles Regierungs- und Anzeigeblatt, vol. 35. 1779
title: Braunschweigische Anzeigen : offizielles Regierungs- und Anzeigeblatt. 38. Jahr 1782
Creators: name: :None
Publisher: name: Fürstliche Waisenhaus-Buchdruckerei
Year: 1782
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Braunschweigische Anzeigen
subject: 902

description: Braunschweigische Anzeigen: offizielles Regierungs- und Anzeigeblatt, vol. 38. 1782
Matrix Product State Description and Gaplessness of the Haldane-Rezayi State
Creators: name: Crépel, V.
name: Regnault, N.
name: Estienne, B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We derive an exact matrix product state representation of the Haldane-Rezayi state on both the cylinder and torus geometry. Our derivation is based on the description of the Haldane-Rezayi state as a correlator in a non-unitary logarithmic conformal field theory. This construction faithfully captures the ten degenerate ground states of this model state on the torus. Using the cylinder geometry, we probe the gapless nature of the phase by extracting the correlation length, which diverges in the thermodynamic limit. The numerically extracted topological entanglement entropies seem to only probe the Abelian part of the theory, which is reminiscent of the Gaffnian state, another model state deriving from a non-unitary conformal field theory.
description: Corrected labels in Fig.3
Self-Organized States in Cellular Automata: Exact Solution
Creators: name: Medvedev, M. V.
name: Diamond, P. H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Astrophysics (astro-ph)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The spatial structure, fluctuations as well as all state probabilities of self-organized (steady) states of cellular automata can be found (almost) exactly and {\em explicitly} from their Markovian dynamics. The method is shown on an example of a natural sand pile model with a gradient threshold.
description: 4 pages (REVTeX), incl. 2 figures (PostScript)
Deep Networks as Approximators of Optimal Transfers Solutions in Multitarget Missions
Creators: name: Li, Haiyang
name: Chen, Shiyu
name: Izzo, Dario
name: Baoyin, Hexi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In the design of multitarget interplanetary missions, there are always many options available, making it often impractical to optimize in detail each transfer trajectory in a preliminary search phase. Fast and accurate estimation methods for optimal transfers are thus of great value. In this paper, deep feed-forward neural networks are employed to estimate solutions to three types of optimization problems: the transfer time of time-optimal low-thrust transfers, fuel consumption of fuel-optimal low-thrust transfers, and the total dv of minimum-dv J2-perturbed multi-impulse transfers. To generate the training data, low-thrust trajectories are optimized using the indirect method and J2-perturbed multi-impulse trajectories are optimized using J2 homotopy and particle swarm optimization. The hyper-parameters of our deep networks are searched by grid search, random search, and the tree-structured Parzen estimators approach. Results show that deep networks are capable of estimating the final mass or time of optimal transfers with extremely high accuracy; resulting into a mean relative error of less than 0.5% for low-thrust transfers and less than 4% for multi-impulse transfers. Our results are also compared with other off-the-shelf machine-learning algorithms and investigated with respect to their capability of predicting cases well outside of the training data.
Bridging the gap between image coding for machines and humans
Creators: name: Le, Nam
name: Zhang, Honglei
name: Cricri, Francesco
name: Youvalari, Ramin G.
name: Tavakoli, Hamed Rezazadegan
name: Aksu, Emre
name: Hannuksela, Miska M.
name: Rahtu, Esa
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Image coding for machines (ICM) aims at reducing the bitrate required to represent an image while minimizing the drop in machine vision analysis accuracy. In many use cases, such as surveillance, it is also important that the visual quality is not drastically deteriorated by the compression process. Recent works on using neural network (NN) based ICM codecs have shown significant coding gains against traditional methods; however, the decompressed images, especially at low bitrates, often contain checkerboard artifacts. We propose an effective decoder finetuning scheme based on adversarial training to significantly enhance the visual quality of ICM codecs, while preserving the machine analysis accuracy, without adding extra bitcost or parameters at the inference phase. The results show complete removal of the checkerboard artifacts at the negligible cost of -1.6% relative change in task performance score. In the cases where some amount of artifacts is tolerable, such as when machine consumption is the primary target, this technique can enhance both pixel-fidelity and feature-fidelity scores without losing task performance.
Photoelectron circular dichroism with Lissajous-type bichromatic fields: One- vs two-photon ionization of chiral molecules
Creators: name: Demekhin, Philipp V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Angular distribution of photoelectrons released by the ionization of randomly-oriented molecules with two laser fields of carrier frequencies $ω$ and $2ω$, which are linearly polarized in two mutually-orthogonal directions, is analyzed in the perturbation limit for the case of one- vs two-photon ionization process. In particular, we focus on the recently predicted [Ph.V. Demekhin {\it et al.}, Phys. Rev. Lett. \textbf{121}, 253201 (2018)] forward-backward asymmetry in the photoelectron emission, which is induced by the interference of two fields and depends on the external relative phase between them. The present theoretical analysis proves a chiral origin of the effect and suggests that a molecule introduces an additional internal relative phase between two ionizing fields.
description: 1 figure
A Flux-Balanced Fluid Model for Collisional Plasma Edge Turbulence: Numerical Simulations with Different Aspect Ratios
Creators: name: Qi, Di
name: Majda, Andrew J.
name: Cerfon, Antoine J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We investigate the drift wave -- zonal flow dynamics in a shearless slab geometry with the new flux-balanced Hasegawa-Wakatani model. As in previous Hasegawa-Wakatani models, we observe a sharp transition from a turbulence dominated regime to a zonal jet dominated regime as we decrease the plasma resistivity. However, unlike previous models, zonal structures are always present in the flux-balanced model, even for high resistivity, and strongly reduce the level of particle and vorticity flux. The more robust zonal jets also have a higher variability than in previous models, which is further enhanced when the computational domain is chosen to be elongated in the radial direction. In these cases, we observe complex multi-scale dynamics, with multiple jets interacting with one another, and intermittent bursts. We present a detailed statistical analysis which highlights how the changes in the aspect ratio of the computational domain affect the third-order statistical moments, and thus modify the turbulent dynamics.
description: 20 pages, 16 figures
title: Braunschwegisches Adreßbuch für das Jahr 1936
Creators: name: :None
Publisher: name: Meyer
Year: 1936
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: Adressbuch
subject: 902

description: Braunschweigisches Adreßbuch, vol. 1936
Inflation driven by causal heat flux
Creators: name: Maartens, Roy
name: Govender, Megan
name: Maharaj, Sunil
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We find a simple inflationary solution in an inhomogeneous spacetime with heat flux. The heat flux obeys a causal transport equation, and counteracts the inflationary decrease of energy density. At late times, the heat flux tends to zero and the fluid approaches the equation of state $p=-ρ$.
description: Latex 5 pages; to appear Gen. Rel. Grav
Does empathy change during undergraduate medical education? – A meta-analysis*
Creators: name: Spatoula, Vasiliki
name: Efharis Panagopoulou
name: Montgomery, Anthony
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Purpose: The aim of this meta-analysis was to synthesize the existing evidence examining how empathy changes during undergraduate medical education and assess whether different types of measures produce different results. Method: Three electronic bibliographic databases were last searched on 28 November 2018. Quantitative studies including a measure of empathy in medical undergraduate students and a comparison of the results among the different years of study were included. All analyses were guided by Lipsey and Wilson and conducted using Comprehensive Meta-Analysis software. Results: The overall sample size for the twelve studies (n = 12) was 4906 participants. Results indicate a significant effect (g = 0.487, SE = 0.113, 95% CI = 0.265, 0.709), suggesting that there is moderate evidence that empathy scores changed. Studies using the Jefferson’s Scale for Physician Empathy (JSPE) reported higher effect sizes (g = 0.834, SE = 0.219, 95% CI = 0.406, 1.263), while the effect size for studies using other scales was smaller and non-significant (g = 0.099, SE = 0.052, 95% CI = −0.003, 0.201). Conclusions: This review indicated significant evidence that self-ratings of empathy changed across the years of medical education. However, we need to be cautious because this effect was only significant when empathy was assessed using the JSPE.
PDH : Probabilistic deep hashing based on MAP estimation of Hamming distance
Creators: name: Kaga, Yosuke
name: Fujio, Masakazu
name: Takahashi, Kenta
name: Ohki, Tetsushi
name: Nishigaki, Masakatsu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: With the growth of image on the web, research on hashing which enables high-speed image retrieval has been actively studied. In recent years, various hashing methods based on deep neural networks have been proposed and achieved higher precision than the other hashing methods. In these methods, multiple losses for hash codes and the parameters of neural networks are defined. They generate hash codes that minimize the weighted sum of the losses. Therefore, an expert has to tune the weights for the losses heuristically, and the probabilistic optimality of the loss function cannot be explained. In order to generate explainable hash codes without weight tuning, we theoretically derive a single loss function with no hyperparameters for the hash code from the probability distribution of the images. By generating hash codes that minimize this loss function, highly accurate image retrieval with probabilistic optimality is performed. We evaluate the performance of hashing using MNIST, CIFAR-10, SVHN and show that the proposed method outperforms the state-of-the-art hashing methods.
description: Accepted by the 26th IEEE International Conference on Image Processing(ICIP2019)
D4.1 Interface Mockups (I, II, III, IV, V)
Creators: name: Bassetti, Chiara
name: Angeli, Antonella De
name: Mladjan Jovanovic
name: Lyle, Peter
name: Monaco, Gianluca
name: Rough, Daniel
name: Teli, Maurizio
Publisher: name: Zenodo
Year: 2019

description: The report summarises the design research methodology and how it has been implemented
 throughout the development of the commonfare.net platform. In particular, it elaborates on the
 public design process during current (1-3) and future (4) releases of commonfare.net. The process
 towards each release combines different methods including design workshops, solutions
 prototyping and field studies. This report provides a detailed description of these methods as
 activities with their inputs, objectives, participants and outputs, and how they informed the releases
 iteratively and incrementally.
Therapeutic strategies targeting FUS toxicity in amyotrophic lateral sclerosis: from a novel mouse model of disease to a first-in-human study
Creators: Korobeynikov, Vlad
Publisher: name: Columbia University
Year: 2021
Subjects: subject: Pathology
subject: Medical sciences
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Amyotrophic lateral sclerosis
subject: RNA-protein interactions
subject: DNA repair
subject: Central nervous system--Diseases
subject: Mice--Genetics
subject: Human genetics

description: Fused in sarcoma (FUS) is an RNA binding protein involved in DNA repair and RNA metabolism, including mRNA transcription, splicing, transport and translation. FUS is genetically and pathologically associated with rare and aggressive forms of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). To explore the mechanisms by which pathogenic mutations in FUS cause neurodegeneration in ALS-FUS, we generated a series of FUS knock-in mouse lines that express the equivalent of the ALS-associated mutant proteins FUSP525L and FUSΔEX14 at physiological levels from the FUS locus. We demonstrate that heterozygous mutant FUS mice show progressive, age-dependent loss of vulnerable subpopulations of spinal motor neurons. While ALS-associated mutations in FUS lead to partial loss of function, we provide genetic evidence that the motor neuron phenotype observed is a consequence of a dose-dependent gain of function, associated with the insolubility of FUS and related RNA binding proteins (RBPs). Furthermore, we show that motor neuron degeneration is driven by cell autonomous mechanisms, associated with mutant FUS-independent inflammatory changes. In this faithful mouse model of ALS-FUS, we demonstrate that an antisense oligonucleotide (ASO) targeting the FUS transcript (ION363) results in the efficient silencing of both wild type and mutant FUS alleles, and that postnatal reduction of FUS protein levels in the brain and spinal cord delays disease onset in this mouse model of ALS-FUS. In a first-in-human trial of ION363, we demonstrate that repeated, intrathecal injections of this candidate therapeutic in an ALS patient with a FUSP525L mutation leads to the efficient silencing of both wild type and mutant FUS in the central nervous system, and a reduction in the burden of FUS aggregates that are a pathological hallmark of ALS-FUS. In mouse genetic and human clinical studies, we provide evidence in support of a therapeutic strategy by which silencing of the FUS gene may be used to prevent or delay disease onset in pre-symptomatic carriers of pathogenic FUS mutations, or to slow disease progression in symptomatic ALS- and FTD-FUS patients. In addition, we use this newly generated model to investigate the role of potential modifiers of FUS toxicity, including hnRNP U and UPF1, and study the role of chronic neuroinflammation in the disease progression that could lead to the development of novel therapeutics to provide immediate clinical benefit to patients with ALS-FUS.
title: Braunschwegisches Adreßbuch für das Jahr 1934
Creators: name: :None
Publisher: name: Meyer
Year: 1934
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: Adressbuch
subject: 902

description: Braunschweigisches Adreßbuch, vol. 1934
Steady-State Cracks in Viscoelastic Lattice Models
Creators: name: Kessler, David A.
name: Levine, Herbert
Publisher: name: arXiv
Year: 1998
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study the steady-state motion of mode III cracks propagating on a lattice exhibiting viscoelastic dynamics. The introduction of a Kelvin viscosity $η$ allows for a direct comparison between lattice results and continuum treatments. Utilizing both numerical and analytical (Wiener-Hopf) techniques, we explore this comparison as a function of the driving displacement $Δ$ and the number of transverse sites $N$. At any $N$, the continuum theory misses the lattice-trapping phenomenon; this is well-known, but the introduction of $η$ introduces some new twists. More importantly, for large $N$ even at large $Δ$, the standard two-dimensional elastodynamics approach completely misses the $η$-dependent velocity selection, as this selection disappears completely in the leading order naive continuum limit of the lattice problem.
description: 27 pages, 8 figures
Therapeutic targeting of Hairy and Enhancer of Split 1 (HES1) transcriptional programs in T-cell Acute Lymphoblastic Leukemia
Creators: Schnell, Stephanie A.
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Medicine
subject: Molecular biology
subject: Immunology
subject: FOS: Clinical medicine

description: T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological tumor resulting from the malignant transformation of immature T-cell progenitors. Originally associated with a dismal prognosis, the outcome of T-ALL patients has improved remarkably over the last two decades as a result of the introduction of intensified chemotherapy protocols. However, these treatments are associated with significant acute and long-term toxicities, and the treatment of patients presenting with primary resistant disease or those relapsing after a transient response remains challenging. Oncogenic activation of NOTCH1 signaling plays a central role in the pathogenesis of T-cell acute lymphoblastic leukemia (T-ALL), with mutations on this signaling pathway affecting more than 60% of patients at diagnosis. However the transcriptional regulatory circuitries driving T-cell transformation downstream of NOTCH1 remain incompletely understood. Here we identify HES1, a transcriptional repressor controlled by NOTCH1 as a critical mediator of NOTCH1 induced leukemogenesis strictly required for tumor cell survival. Mechanistically, we demonstrate that HES1 inhibits leukemia cell death by repressing BBC3, the gene encoding the PUMA BH3-only proapototic factor. Finally, we identify perhexiline, a small molecule inhibitor of mitochondrial carnitine palmitoyltransferase-1, as a HES1-signature antagonist drug with robust antileukemic activity against NOTCH1 induced leukemias in vitro and in vivo.
Open Science Quest - Open Science Fair 2019 (Porto) - poster
Creators: name: England, Jonathan
Publisher: name: Zenodo
Year: 2019
Subjects: OpenScienceQuest
OpenScienceVoyager
Open Science
Gamification
OSFair2019

description: Poster presented during the Open Science Fair 2019 (Porto). Learning through the structure of a seminar is essential, but sometimes our brains also need distraction and entertainment. The Open Science Quest is an activity that was first organised as part of a national Open Science event in Luxembourg at the university library. Its aim was for students, early-career and senior researchers, librarians and research support staff to explore and discover Open Science practices at their own pace. The activity was stand-alone and promoted independent learning by requiring participants to use a mix of information gathering techniques to answer a series of questions and challenges. The idea of the Open Science Quest is to provide a highly adaptable ‘brand’ and framework that can be tailored for a variety of topics and audiences. We welcome you all on board fellow Open Science Voyagers. #OpenScienceQuest
The burden of early-onset sepsis in Emilia-Romagna (Italy): a 4-year, population-based study
Creators: name: Berardi, Alberto
name: Baroni, Lorenza
name: Reggiani, Maria Letizia Bacchi
name: Ambretti, Simone
name: Biasucci, Giacomo
name: Bolognesi, Serenella
name: Capretti, Maria Grazia
name: Carretto, Edoardo
name: Ciccia, Matilde
name: Fiorini, Valentina
name: Fortini, Cinzia
name: Gargano, Giancarlo
name: Pedna, Maria Federica
name: Rizzo, Vittoria
name: Creti, Roberta
name: Ferrari, Fabrizio
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Objective: To provide the first Italian data on pathogens causing early-onset sepsis (EOS) and their antimicrobial susceptibility, after the successfully prevention of Group B streptococcus (GBS) EOS. Methods: Retrospective area-based cohort study from Emilia-Romagna (Italy). Cases of EOS registered (from 2009 to 2012) in all gestational age neonates were reviewed. Results: Live births (LB) numbered 146 682. Ninety neonates had EOS and 12 died (incidence rates of 0.61 and 0.08/1000 LB, respectively). EOS and mortality were the highest among neonates with a birth weight <1000 g (20.37/1000 LB and 8.49/1000 LB, respectively). The most common pathogens were GBS (n = 27, 0.18/1000 LB) and Escherichia coli (n = 19, 0.13/1000 LB). Most infants affected by E. coli EOS were born preterm (n = 13), had complications (n = 4) or died (n = 7). Among 90 isolates tested, only 3 were resistant to both first line empirical antibiotics. Multivariate logistic regression analysis showed that low gestational age, caesarean section and low platelet count at presentation were significantly associated with death or brain lesions (area under ROC curve = 0.939, H-L = 0.944, sensitivity 76.0%, specificity 90.7%). Conclusions: GBS slightly exceeds E. coli as a cause of EOS. However, E. coli is the prominent cause of death, complications and in most cases affects preterm neonates. Empirical antimicrobial therapy of EOS seems appropriate.
Nasal Patches and Curves for Expression-robust 3D Face Recognition
Creators: name: Emambakhsh, Mehryar
name: Evans, Adrian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The potential of the nasal region for expression robust 3D face recognition is thoroughly investigated by a novel five-step algorithm. First, the nose tip location is coarsely detected and the face is segmented, aligned and the nasal region cropped. Then, a very accurate and consistent nasal landmarking algorithm detects seven keypoints on the nasal region. In the third step, a feature extraction algorithm based on the surface normals of Gabor-wavelet filtered depth maps is utilised and, then, a set of spherical patches and curves are localised over the nasal region to provide the feature descriptors. The last step applies a genetic algorithm-based feature selector to detect the most stable patches and curves over different facial expressions. The algorithm provides the highest reported nasal region-based recognition ranks on the FRGC, Bosphorus and BU-3DFE datasets. The results are comparable with, and in many cases better than, many state-of-the-art 3D face recognition algorithms, which use the whole facial domain. The proposed method does not rely on sophisticated alignment or denoising steps, is very robust when only one sample per subject is used in the gallery, and does not require a training step for the landmarking algorithm. https://github.com/mehryaragha/NoseBiometrics
The Time Evolution of Quantum Universe in The Quantum Potential Picture
Creators: name: Blaut, A.
name: Kowalski-Glikman, J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use the quantum potential approach to analyse the quantum cosmological model of the universe. The quantum potential arises from exact solutions of the full Wheeler-De Witt equation.
description: 9 pages, LaTeX
Monatomic phase change memory
Creators: name: Salinga, Martin
name: Kersting, Benedikt
name: Ronneberger, Ider
name: Jonnalagadda, Vara Prasad
name: Vu, Xuan Thang
name: Gallo, Manuel Le
name: Giannopoulos, Iason
name: Cojocaru-Mirédin, Oana
name: Mazzarello, Riccardo
name: Sebastian, Abu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Phase change memory has been developed into a mature technology capable of storing information in a fast and non-volatile way, with potential for neuromorphic computing applications. However, its future impact in electronics depends crucially on how the materials at the core of this technology adapt to the requirements arising from continued scaling towards higher device densities. A common strategy to finetune the properties of phase change memory materials, reaching reasonable thermal stability in optical data storage, relies on mixing precise amounts of different dopants, resulting often in quaternary or even more complicated compounds. Here we show how the simplest material imaginable, a single element (in this case, antimony), can become a valid alternative when confined in extremely small volumes. This compositional simplification eliminates problems related to unwanted deviations from the optimized stoichiometry in the switching volume, which become increasingly pressing when devices are aggressively miniaturized. Removing compositional optimization issues may allow one to capitalize on nanosize effects in information storage.
Stability of the non-extremal enhancon solution I: perturbation equations
Creators: name: Dimitriadis, Apostolos
name: Ross, Simon F.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the stability of the two branches of non-extremal enhancon solutions. We argue that one would expect a transition between the two branches at some value of the non-extremality, which should manifest itself in some instability. We study small perturbations of these solutions, constructing a sufficiently general ansatz for linearised perturbations of the non-extremal solutions, and show that the linearised equations are consistent. We show that the simplest kind of perturbation does not lead to any instability. We reduce the problem of studying the more general spherically symmetric perturbation to solving a set of three coupled second-order differential equations.
description: 20 pages, 1 figure, references added, typos fixed, version to appear in PRD
Chaos in Quantum Dots: Dynamical Modulation of Coulomb Blockade Peak Heights
Creators: name: Narimanov, E. E.
name: Cerruti, N. R.
name: Baranger, H. U.
name: Tomsovic, S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The electrostatic energy of an additional electron on a conducting grain blocks the flow of current through the grain, an effect known as the Coulomb blockade. Current can flow only if two charge states of the grain have the same energy; in this case the conductance has a peak. In a small grain with quantized electron states, referred to as a quantum dot, the magnitude of the conductance peak is directly related to the magnitude of the wavefunction near the contacts to the dot. Since dots are generally irregular in shape, the dynamics of the electrons is chaotic, and the characteristics of Coulomb blockade peaks reflects those of wavefunctions in chaotic systems. Previously, a statistical theory for the peaks was derived by assuming these wavefunctions to be completely random. Here we show that the specific internal dynamics of the dot, even though it is chaotic, modulates the peaks: because all systems have short-time features, chaos is not equivalent to randomness. Semiclassical results are derived for both chaotic and integrable dots, which are surprisingly similar, and compared to numerical calculations. We argue that this modulation, though unappreciated, has already been seen in experiments.
description: 4 pages, 3 postscript figs included (2 color), uses epsf.sty
Going down from a 3-form in 16 dimensions
Creators: name: Baulieu, L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Group theory indicates the existence of a $SO(8) X SO(7) \subset SO(16)$ invariant self-duality equation for a 3-form in 16 dimensions. It is a signal for interesting topological field theories, especially on 8-dimensional manifolds with holonomy group smaller than or equal to Spin(7), with a gauge symmetry that is SO(8) or SO(7). Dimensional reduction also provides new supersymmetric theories in 4 and lower dimensions, as well as a model with gravitational interactions in 8 dimensions, which relies on the octonionic gravitational self-duality equation.
description: 14 pages
Fusaric acid-induced promoter methylation of DNA methyltransferases triggers DNA hypomethylation in human hepatocellular carcinoma (HepG2) cells
Creators: name: Terisha Ghazi
name: Savania Nagiah
name: Pragalathan Naidoo
name: Chuturgoon, Anil A.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Plant Biology

description: Fusaric acid (FA), a mycotoxin contaminant of maize, displays toxicity in plants and animals; however, its epigenetic mechanism is unknown. DNA methylation, an epigenetic modification that regulates gene expression, is mediated by DNA methyltransferases (DNMTs; DNMT1, DNMT3A, and DNMT3B) and demethylases (MBD2). The expression of DNMTs and demethylases are regulated by promoter methylation, microRNAs (miR-29b) and post-translational modifications (ubiquitination). Alterations in these DNA methylation modifying enzymes affect DNA methylation patterns and offer novel mechanisms of FA toxicity. We determined the effect of FA on global DNA methylation as well as a mechanism of FA-induced changes in DNA methylation by transcriptional (promoter methylation), post-transcriptional (miR-29b) and post-translational (ubiquitination) regulation of DNMTs and MBD2 in the human hepatocellular carcinoma (HepG2) cell line. FA induced global DNA hypomethylation (p < 0.0001) in HepG2 cells. FA decreased the mRNA and protein expression of DNMT1 (p < 0.0001), DNMT3A (p < 0.0001), and DNMT3B (p < 0.0001) by upregulating miR-29b (p < 0.0001) and inducing promoter hypermethylation of DNMT1 (p < 0.0001) and DNMT3B (p < 0.0001). FA decreased the ubiquitination of DNMT1 (p = 0.0753), DNMT3A (p = 0.0008), and DNMT3B (p < 0.0001) by decreasing UHRF1 (p < 0.0001) and USP7 (p < 0.0001). FA also induced MBD2 promoter hypomethylation (p < 0.0001) and increased MBD2 expression (p < 0.0001). Together these results indicate that FA induces global DNA hypomethylation by altering DNMT promoter methylation, upregulating miR-29b, and increasing MBD2 in HepG2 cells.
KAM Tori for 1D Nonlinear Wave Equations with Periodic Boundary Conditions
Creators: name: Chierchia, Luigi
name: You, Jaingong
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In this paper, one-dimensional (1D) nonlinear wave equations $u_{tt} -u_{xx}+V(x)u =f(u)$, with periodic boundary conditions are considered; V is a periodic smooth or analytic function and the nonlinearity f is an analytic function vanishing together with its derivative at u=0. It is proved that for ``most'' potentials V(x), the above equation admits small-amplitude periodic or quasi-periodic solutions corresponding to finite dimensional invariant tori for an associated infinite dimensional dynamical system. The proof is based on an infinite dimensional KAM theorem which allows for multiple normal frequencies.
description: 30 pages
Dispersive stabilization of the inverse cascade for the Kolmogorov flow
Creators: name: Legras, B.
name: Villone, B.
name: Frisch, U.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: It is shown by perturbation techniques and numerical simulations that the inverse cascade of kink-antikink annihilations, characteristic of the Kolmogorov flow in the slightly supercritical Reynolds number regime, is halted by the dispersive action of Rossby waves in the beta-plane approximation. For beta tending to zero, the largest excited scale is proportional to the logarithm of one over beta and differs strongly from what is predicted by standard dimensional phenomenology which ignores depletion of nonlinearity.
description: 4 pages, LATEX, 3 figures. v3: revised version with minor corrections
A sketch grammar of Burarra
Creators: name: Green, Rebecca
Publisher: name: The Australian National University
Year: 1987
Subjects: subject: PL7101.B87G73 1987
subject: Burarra language Grammar

description: Burarra is a non-Pama-Nyungan, multiple-classifying, prefixing language spoken in Arnhem Land in the Northern Territory. Burarra people*s country is in Central Arnhem Land, along the Blyth and Cadell Rivers and the coastal and inland areas around and between them. Many people now live to the west of this, at Maningrida, a settlement on the mouth of the Liverpool River.
Simulating lattice thermal conductivity in semiconducting materials using high-dimensional neural network potential
Creators: name: Minamitani, Emi
name: Ogura, Masayoshi
name: Watanabe, Satoshi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We demonstrate that a high-dimensional neural network potential (HDNNP) can predict the lattice thermal conductivity of semiconducting materials with an accuracy comparable to that of density functional theory (DFT) calculation. After a training procedure based on the force, the root mean square error between the forces predicted by the HDNNP and DFT is less than 40 meV/Å. As typical examples, we present the results for Si and GaN bulk crystals. The deviation from the thermal conductivity calculated using DFT is within 1% at 200 to 500 K for Si and within 5.4% at 200 to 1000 K for GaN.
Order rho^2 Corrections to Cosmology with Two Branes
Creators: name: Cline, James M.
name: Vinet, Jérémie
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the results of work in which we derived the order rho^2 corrections to the Friedmann equations in the Randall-Sundrum I model. The effects of Golberger-Wise stabilization are taken into account. We surprisingly find that in the cases of inflation and radiation domination, the leading corrections on a given brane come exclusively from the effects of energy density located on the opposite brane.
description: 6 pages, latex; presented by J.V. at MRST 2002, Perimeter Institute for Theoretical Physics, 15-17 May 2002, Waterloo Ontario; based on hep-th/0201041
The Shellal Mosaic in the Australian War Memorial : style and imagery
Creators: name: Henderson, Priscilla H
Publisher: name: The Australian National University
Year: 1985
Subjects: subject: Mosaics Palestine
subject: Shellal (Extinct city) Antiquities

description: The so-called "Shellal mosaic", at the Australian War Memorial, Canberra, is the floor of a sixth century, Byzantine church, discovered in the western Negev area of what is Israel. It is one of many such mosaic pavements dating from the fourth to the sixth century A.D, scattered around the Mediterranean area. A large concentration of such pavements, bearing very similar designs of birds and animals on a ground of a vine trellis issuing from an amphora, are found in Palestine. These all be dated, by inscription or by archaeological can means, to within the early Byzantine period, between about 515 and 575 A.D. Many fall directly within the period of rule of Justinian (527-565 A.D): the Shellal floor, dated to 561-2, is one of these. The fact that almost identical designs are found in early Christian churches, as well as in synagogues and private houses, raises the question as to whether they carry iconographic meaning or whether they are purely decorative continuations of earlier pagan artistic tradition.
Stochastic Gravitational Waves from Inflaton Decays
Creators: name: Huang, Da
name: Yin, Lu
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Due to the universality of gravitational interactions, it is generally expected that a stochastic gravitational wave (GW) background could form during the reheating period when the inflaton perturbatively decays with the emission of gravitons. Previously, only models in which the inflaton dominantly decays into a pair of light scalar and/or fermion particles were considered in the literature. In the present paper, we focus on the cases with a vector particle pair in the final decay product. The differential decay rates for the three-body gravitational inflaton decays are presented for two typical couplings between the inflaton and vector fields, from which we predict their respective GW frequency spectra. It turns out that, similar to the scalar and fermion cases, the obtained GW spectra is too high in frequency to be observed by the current and near-future GW detection experiments and calls for a new design of high-frequency GW detectors.
description: 15 pages, 4 figures
High-speed standard magneto-rotational instability
Creators: name: Deguchi, Kengo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The large Reynolds number asymptotic approximation of the neutral curve of Taylor-Couette flow subject to axial uniform magnetic field is analysed. The flow has been extensively studied since early 90's as the magneto-rotational instability (MRI) occurring in the flow could possibly explain the origin of the instability observed in certain astrophysical objects. Elsewhere the ideal approximation has been used to study high-speed flows, whilst it sometimes produces paradoxical results. For example, ideal flows must be completely stabilised for strong enough applied magnetic field, but on the other hand the vanishing magnetic Prandtl number limit of the stability should be purely hydrodynamic so instability must occur when Rayleigh's stability condition is violated. The first our discovery is that this apparent contradiction can be resolved by showing the abrupt appearance of the hydrodynamic instability at certain critical value of magnetic Prandtl number, which can be found by asymptotically large Reynolds number limit but with long enough wavelength to retain some diffusive effects. The second our finding concerns so-called Velikhov-Chandrasekhar paradox, namely the mismatch of the zero external magnetic field limit of the Velikhov-Chandrasekhar stability criterion and Rayleigh's stability criterion. We show for fully wide gap cases that the high Reynolds number asymptotic analysis of the MRI naturally yields the simple stability condition that describes smooth transition from Rayleigh to Velikhov-Chandrasekhar stability criteria with increasing Lundquist number.
description: 29 pages, 11 figures
Resurgence of superconductivity and the role of $d_{xy}$ hole band in FeSe$_{1-x}$Te$_x$
Creators: name: Morfoot, Archie B.
name: Kim, Timur K.
name: Watson, Matthew D.
name: Haghighirad, Amir A.
name: Singh, Shiv J.
name: Bultinck, Nick
name: Coldea, Amalia I.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Iron-chalcogenide superconductors display rich phenomena caused by orbital-dependent band shifts and electronic correlations. Additionally, they are potential candidates for topological superconductivity due to the band inversion between the Fe $d$ bands and the chalcogen $p_z$ band. Here we present a detailed study of the electronic structure of the nematic superconductors FeSe$_{1-x}$Te$_x$ ($0
description: 22 pages, 15 figures
There Goes the Barrio: Measuring Gentefication in Boyle Heights, Los Angeles
Creators: Escalante, Ubaldo
Publisher: name: Columbia University
Year: 2017
Subjects: City planning
Hispanic American neighborhoods
Ethnic neighborhoods
Hispanic Americans
Gentrification
Hispanic Americans--Economic conditions

description: This thesis develops a methodological approach to gentrification that reveals the extent to which gentrification of Latinos by Latinos--otherwise known as gentefication-- has occurred in the neighborhood of Boyle Heights in downtown Los Angeles, California. It posits that gentefication is a “distinctive process of urban transformation driven by patterns of [ethnic] and class stratification” and suggests that overlooked forms of gentrification are not captured by contemporary quantitative methods that spatially identify gentrified census tracts (Moore, 2009, p. 119). This thesis adapts existing quantitative methodological frameworks in order to confirm through spatial analysis that middle class, educated Latinos are a gentrifying force in Boyle Heights. It does so by arguing that in order to identify self-gentrifying communities, socio-economic indicators used to determine gentrification must be racially relative. By exploring gentefication as a process through four methods each comparing Latino-specific data at the census tract and city level in different ways, this thesis concludes that Boyle Heights is being gentefied by Latinos with varying capacities to gentefy. Finally, the thesis explores the implications that this type of gentrification has for urban planning and economic development in Latino communities like Boyle Heights.