cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Events-to-Video: Bringing Modern Computer Vision to Event Cameras
Creators: name: Rebecq, Henri
name: Ranftl, René
name: Koltun, Vladlen
name: Scaramuzza, Davide
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Event cameras are novel sensors that report brightness changes in the form of asynchronous "events" instead of intensity frames. They have significant advantages over conventional cameras: high temporal resolution, high dynamic range, and no motion blur. Since the output of event cameras is fundamentally different from conventional cameras, it is commonly accepted that they require the development of specialized algorithms to accommodate the particular nature of events. In this work, we take a different view and propose to apply existing, mature computer vision techniques to videos reconstructed from event data. We propose a novel recurrent network to reconstruct videos from a stream of events, and train it on a large amount of simulated event data. Our experiments show that our approach surpasses state-of-the-art reconstruction methods by a large margin (> 20%) in terms of image quality. We further apply off-the-shelf computer vision algorithms to videos reconstructed from event data on tasks such as object classification and visual-inertial odometry, and show that this strategy consistently outperforms algorithms that were specifically designed for event data. We believe that our approach opens the door to bringing the outstanding properties of event cameras to an entirely new range of tasks. A video of the experiments is available at https://youtu.be/IdYrC4cUO0I
title: Calender auf das Jahr nach Christi Geburt 1862
Creators: name: :None
Publisher: name: Meyer
Year: 1862
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: 902

description: Calender auf das Jahr nach Christi Geburt ..., vol. 1862
Recombination of Intersecting D-Branes and Cosmological Inflation
Creators: name: Gomez-Reino, M.
name: Zavala, I.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the interactions between Dp-branes intersecting at an arbitrary number of angles in the context of type II string theory. For cosmology purposes we concentrate in the theory on R^{3,1} x T^6. Interpreting the distance between the branes as the inflaton field, the branes can intersect at most at two angles on the compact space. If the configuration is non-supersymmetric we will have an interbrane potential that provides an effective cosmological inflationary epoch at the four dimensional intersection between the branes. The end of inflation occurs when the interbrane distance becomes small compared with the string scale, where a tachyon develops triggering the recombination of the branes. We study this recombination due to tachyon instabilities and we find the possibility for the final configuration to be again branes intersecting at two angles. This preserves the interesting features that are present in the intersecting brane models from the string model building point of view also after the end of inflation. This fact was not present in the models of branes intersecting at just one angle. This kind of recombination can be also important in other string contexts.
description: 22 pages, 2 figures, replaced with published version
Manganese doping for enhanced magnetic brightening and circular polarization control of dark excitons in paramagnetic layered hybrid metal-halide perovskites
Creators: name: Neumann, Timo
name: Feldmann, Sascha
name: Moser, Philipp
name: Delhomme, Alex
name: Zerhoch, Jonathan
name: Van De Goor, Tim
name: Wang, Shuli
name: Dyksik, Mateusz
name: Winkler, Thomas
name: Finley, Jonathan J.
name: Plochocka, Paulina
name: Brandt, Martin S.
name: Faugeras, Clément
name: Stier, Andreas V.
name: Deschler, Felix
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/639/301/119/1000
/639/624/1107/527
/140/125
article

description: Funder: see funding acknowledgment in paper
description: Abstract: Materials combining semiconductor functionalities with spin control are desired for the advancement of quantum technologies. Here, we study the magneto-optical properties of novel paramagnetic Ruddlesden-Popper hybrid perovskites Mn:(PEA)2PbI4 (PEA = phenethylammonium) and report magnetically brightened excitonic luminescence with strong circular polarization from the interaction with isolated Mn2+ ions. Using a combination of superconducting quantum interference device (SQUID) magnetometry, magneto-absorption and transient optical spectroscopy, we find that a dark exciton population is brightened by state mixing with the bright excitons in the presence of a magnetic field. Unexpectedly, the circular polarization of the dark exciton luminescence follows the Brillouin-shaped magnetization with a saturation polarization of 13% at 4 K and 6 T. From high-field transient magneto-luminescence we attribute our observations to spin-dependent exciton dynamics at early times after excitation, with first indications for a Mn-mediated spin-flip process. Our findings demonstrate manganese doping as a powerful approach to control excitonic spin physics in Ruddlesden-Popper perovskites, which will stimulate research on this highly tuneable material platform with promise for tailored interactions between magnetic moments and excitonic states.
Microwave-to-optical conversion using lithium niobate thin-film acoustic resonators
Creators: name: Shao, Linbo
name: Yu, Mengjie
name: Maity, Smarak
name: Sinclair, Neil
name: Zheng, Lu
name: Chia, Cleaven
name: Shams-Ansari, Amirhassan
name: Wang, Cheng
name: Zhang, Mian
name: Lai, Keji
name: Loncar, Marko
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate conversion of up to 4.5 GHz-frequency microwaves to 1500 nm-wavelength light using optomechanical interactions on suspended thin-film lithium niobate. Our method utilizes an interdigital transducer that drives a free-standing 100 $μ$m-long thin-film acoustic resonator to modulate light travelling in a Mach-Zehnder interferometer or racetrack cavity. Owing to the strong microwave-to-acoustic coupling offered by the transducer in conjunction with the strong photoelastic, piezoelectric, and electro-optic effects of lithium niobate, we achieve a half-wave voltage of $V_π$ = 4.6 V and $V_π$ = 0.77 V for the Mach-Zehnder interferometer and racetrack resonator, respectively. The acousto-optic racetrack cavity exhibits an optomechancial single-photon coupling strength of 1.1 kHz. Our integrated nanophotonic platform coherently leverages the compelling properties of lithium niobate to achieve microwave-to-optical transduction. To highlight the versatility of our system, we also demonstrate a lossless microwave photonic link, which refers to a 0 dB microwave power transmission over an optical channel.
title: Calender auf das Jahr nach Christi Geburt 1874
Creators: name: :None
Publisher: name: Meyer
Year: 1874
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: 902

description: Calender auf das Jahr nach Christi Geburt ..., vol. 1874
Planning for knowledge exchange in a study of the safety-related experiences of parents of children with disabilities and chronic conditions
Creators: name: Van Dooren, Sylvia
name: Olsen, Lise
Publisher: name: The University of British Columbia
Year: 2009

description: This study, currently in progress, aims to develop grounded theory and understanding about how parents experience and manage safety and injury prevention issues for a child with a disability or chronic condition. The study is being conducted with a multidisciplinary project team, consisting of injury prevention and clinician researchers. Data collection will include semi-structured interviews and the estimated sample size will be 25-30 parents. We are presently in the early phases of recruiting parents for interviews. In our presentation, we will share our plans for knowledge exchange activities. These include taking an end of grant approach and using interactive and tailored dissemination activities with clinicians. At this time, we are at the knowledge creation stage within the knowledge to action process as described by Graham et al. (2006). Following this, we expect to develop knowledge tools and products that will be taken through the action cycle or application stage. Discussion issues will be raised including how best to: develop messages based on a single study, manage end-user expectations about the content and framing of messages, and involve clinicians in the development of dissemination messages and activities.
Evolution in Minority Games I. Games with a Fixed Strategy Space
Creators: name: Li, Yi
name: Riolo, Rick
name: Savit, Robert
Publisher: name: arXiv
Year: 1999
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: In this paper we study the minority game in the presence of evolution. In particular, we examine the behavior in games in which the dimension of the strategy space, m, is the same for all agents and fixed for all time. We find that for all values of m, not too large, evolution results in a substantial improvement in overall system performance. We also show that after evolution, results obey a scaling relation among games played with different values of m and different numbers of agents, analogous to that found in the non-evolutionary, adaptive games. Best system performance still occurs, for a given number of agents, at m_c, the same value of the dimension of the strategy space as in the non-evolutionary case, but system performance is now nearly an order of magnitude better than the non- evolutionary result. For m
description: 19 pages text, 20 figures. Postscript from msword for text, from matlab for figures (figures combined into one file with a tex processor)
Transfer operator approach to 1d random band matrices
Creators: name: Shcherbina, Mariya
name: Shcherbina, Tatyana
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss an application of the transfer operator approach to the analysis of the different spectral characteristics of 1d random band matrices (correlation functions of characteristic polynomials, density of states, spectral correlation functions). We show that when the bandwidth $W$ crosses the threshold $W=N^{1/2}$, the model has a kind of phase transition (crossover), whose nature can be explained by the spectral properties of the transfer operator.
description: 19p. arXiv admin note: substantial text overlap with arXiv:1802.03813
Petersenidia mikhailovi Lelej 2021
Creators: name: Brothers, Denis J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mutillidae
Petersenidia
Petersenidia mikhailovi

description: Petersenidia mikhailovi Lelej, 2021; Indonesia (Sulawesi)
 Petersenidia mikhailovi Lelej, 2021: 102; ♀.
description: Published as part of Brothers, Denis J., 2022, Critical analysis of the type material of Mutillidae described from the Australasian Region (Hymenoptera), pp. 1-215 in Zootaxa 5140 (1) on page 211, DOI: 10.11646/zootaxa.5140.1.1, http://zenodo.org/record/6572181
Evidence for Frame-Dragging Around Spinning Black Holes in X-Ray Binaries
Creators: name: Cui, Wei
name: Zhang, S. N.
name: Chen, Wan
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the context of black hole spin in X-ray binaries, we propose that certain type of quasi-period oscillations (QPOs) observed in the light curves of black hole binaries (BHBs) are produced by X-ray modulation at the precession frequency of accretion disks, due to relativistic dragging of inertial frames around spinning black holes. These QPOs tend to be relatively stable in their centroid frequencies. They have been observed in the frequency range of a few to a few hundred Hz for several black holes with dynamically determined masses. By comparing the computed disk precession frequency with that of the observed QPO, we can derive the black hole angular momentum, given its mass. When applying this model to GRO J1655-40, GRS 1915+105, Cyg X-1, and GS 1124-68, we found that the black holes in GRO J1655-40 and GRS 1915+105, the only known BHBs that occasionally produce superluminal radio jets, spin at a rate close to the maximum limit, while Cyg X-1 and GS 1124-68, typical (persistent and transient) BHBs, contain only moderately rotating ones. Extending the model to the general population of black hole candidates, the fact that only low-frequency QPOs have been detected is consistent with the presence of only slowly spinning black holes in these systems. Our results are in good agreement with those derived from spectral data, thus strongly support the classification scheme that we proposed previously for BHBs.
description: new title, minor revisions; change title to conform to ApJL rules; replaced with the updated version to avoid confusion
Modelling Turbine Acoustic Impedance
Creators: name: Brind, James
name: Pullan, Graham
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: turbine
acoustic impedance
aeroacoustics
thermoacoustic stability

description: We quantify the sensitivity of turbine acoustic impedance to aerodynamic design parameters. Impedance boundary conditions are an influential yet uncertain parameter in predicting the thermoacoustic stability of gas turbine combustors. We extend the semi-actuator disk model to cambered blades, using non-linear time-domain computations of turbine vane and stage cascades with acoustic forcing for validation data. Discretising cambered aerofoils into multiple disks improves reflection coefficient predictions, reducing error by up to an order of magnitude compared to a flat plate assumption. A parametric study of turbine stage designs using the analytical model shows acoustic impedance is a weak function of degree of reaction and polytropic efficiency. The design parameter with the strongest influence is flow coefficient, followed by axial velocity ratio and Mach number. We provide the combustion engineer with improved tools to predict impedance boundary conditions, and suggest thermoacoustic stability is most likely to be compromised by change in turbine flow coefficient.
The Politics of Employment Insecurity
Creators: Kim, Hyun Kyoung
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Political science
subject: FOS: Political science
subject: Public policy (Law)
subject: Industrial relations

description: At the heart of debates about the effects of globalization and the service economy on the welfare state is the notion of employment insecurity. It is considered a key causal mechanism through which cross-border movements of capital, goods and services (globalization) and employment shifts from manufacturing to services (deindustrialization) affect social policy. However, empirical research on such a causal linkage has been markedly lacking. In many cases, employment insecurity has been simply assumed to be the causal mechanism at work behind the observed relationship between economic globalization or deindustrialization and governments' commitment to social protection.
This dissertation brings the hidden causal mechanism to the fore by using employment protection both as an explanatory and a dependent variable. Employment protection, which refers to regulatory frameworks that govern hiring and firing, has a direct bearing on workers' job security and can capture the politics of labor market risks. This dissertation consists of two projects. First, it examines how globalization and the service economy affect employment protection. Second, it analyzes how employment protection influences institutions of social protection.
Focusing on the preferences and political strength of skilled workers, I argue that the effects of international trade and the service economy on employment protection depend on the relative scarcity of skilled labor and on the patterns of employment shifts between industries. I also contend that whether employment insecurity leads to expanded social protection depends on the social policy preference of skilled workers, which in turn, is shaped by the skill distribution in the economy and by pre-existing social protection institutions.
This study finds that employment protection is both a political response to external and internal economic changes and a driving force for social policy change. Moreover, it highlights different causal processes for developed and developing economies. It offers statistical evidence based on two extensive cross-national time-series datasets of employment protection in the OECD and Latin America, and uses a case study of South Korea as qualitative evidence to elucidate the underlying dynamics of its quantitative findings.
The inner dust shell of Betelgeuse detected by polarimetric aperture-masking interferometry
Creators: name: Haubois, X.
name: Norris, B.
name: Tuthill, P. G.
name: Pinte, C.
name: Kervella, P.
name: Girard, J. H.
name: Kostogryz, N. M.
name: Berdyugina, S. V.
name: Perrin, G.
name: Lacour, S.
name: Chiavassa, A.
name: Ridgway, S. T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Theory surrounding the origin of the dust-laden winds from evolved stars remains mired in controversy. Characterizing the formation loci and the dust distribution within approximately the first stellar radius above the surface is crucial for understanding the physics that underlie the mass-loss phenomenon. By exploiting interferometric polarimetry, we derive the fundamental parameters that govern the dust structure at the wind base of a red supergiant. We present near-infrared aperture-masking observations of Betelgeuse in polarimetric mode obtained with the NACO/SAMPol instrument. We used both parametric models and radiative transfer simulations to predict polarimetric differential visibility data and compared them to SPHERE/ZIMPOL measurements. Using a thin dust shell model, we report the discovery of a dust halo that is located at only 0.5 R$_{\star}$ above the photosphere (i.e. an inner radius of the dust halo of 1.5 R$_{\star}$). By fitting the data under the assumption of Mie scattering, we estimate the grain size and density for various dust species. By extrapolating to the visible wavelengths using radiative transfer simulations, we compare our model with SPHERE/ZIMPOL data and find that models based on dust mixtures that are dominated by forsterite are most favored. Such a close dusty atmosphere has profound implications for the dust formation mechanisms around red supergiants.
description: Accepted in A&A, 10 pages, 20 figures
The Politics of International Large-Scale Assessment:  The Programme for International Student Assessment (PISA) and American Education Discourse, 2000-2012
Creators: Green Saraisky, Nancy
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Education
subject: Political science
subject: FOS: Political science
subject: Educational tests and measurements

description: The number of countries participating in large-scale international assessments has grown dramatically during the past two decades and the use of assessment results in national-level education policy debate has increased commensurately.  Recent literature on the role of international assessments in education politics suggests that rankings and performance indicators can shape national educational discourse in important ways.  This dissertation examines the use of one such assessment, the Programme for International Student Assessment (PISA), in education discourse in the United States from 2000 to 2012.  The United States played a key role in the development of PISA and has participated in almost every international assessment of the past fifty years.  Yet scholars have mostly overlooked the reception of international assessment in the United States.  This dissertation seeks to address this gap.
      Using an original dataset of one hundred and thirty texts from American academic literature, think tanks and the media, I examine the use of references to PISA and to top scoring countries on PISA, e.g., Finland and China (Shanghai), during the first decade of PISA testing.  I find that PISA has rapidly become an accepted comparative measure of educational excellence throughout US discourse.  However, despite consistently middling American scores, attempts to turn America’s PISA performance into a crisis of the US education system have not stuck.  Instead, I suggest that both global and domestic politics play a stronger role in shaping the interpretations of student achievement on PISA than does student performance.  I show how the American PISA discourse:  (1) is driven by political, not empirical, realities; (2) contains few calls for policy borrowing from top-scoring countries and has not engendered any direct efforts at policy reform; (3) is framed with remarkable consistency across the political spectrum; and (4) is a profoundly elite enterprise, privileging the voices of international organizations and policy makers over those of parents, teachers and students.
Deep into the structure of the first galaxies: SERRA views
Creators: name: Pallottini, A.
name: Ferrara, A.
name: Decataldo, D
name: Gallerani, S.
name: Vallini, L.
name: Carniani, S.
name: Behrens, C.
name: Kohandel, M.
name: Salvadori, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the formation and evolution of a sample of Lyman Break Galaxies in the Epoch of Reionization by using high-resolution ($\sim 10 \,{\rm pc}$), cosmological zoom-in simulations part of the SERRA suite. In SERRA, we follow the interstellar medium (ISM) thermo-chemical non-equilibrium evolution, and perform on-the-fly radiative transfer of the interstellar radiation field (ISRF). The simulation outputs are post-processed to compute the emission of far infrared lines ([CII], [NII], and [OIII]). At $z=8$, the most massive galaxy, `Freesia', has an age $t_\star \simeq 409\,{\rm Myr}$, stellar mass $M_{\star} \simeq 4.2\times 10^9 {\rm M}_{\odot}$, and a star formation rate ${\rm SFR} \simeq 11.5\,{\rm M}_{\odot}{\rm yr}^{-1}$, due to a recent burst. Freesia has two stellar components (A and B) separated by $\simeq 2.5\, {\rm kpc}$; other 11 galaxies are found within $56.9 \pm 21.6 \, {\rm kpc}$. The mean ISRF in the Habing band is $G = 7.9\, G_0$ and is spatially uniform; in contrast, the ionisation parameter is $U = 2^{+20}_{-2} \times 10^{-3}$, and has a patchy distribution peaked at the location of star-forming sites. The resulting ionising escape fraction from Freesia is $f_{\rm esc}\simeq 2\%$. While [CII] emission is extended (radius 1.54 kpc), [OIII] is concentrated in Freesia-A (0.85 kpc), where the ratio $Σ_{\rm [OIII]}/Σ_{\rm [CII]} \simeq 10$. As many high-$z$ galaxies, Freesia lies below the local [CII]-SFR relation. We show that this is the general consequence of a starburst phase (pushing the galaxy above the Kennicutt-Schmidt relation) which disrupts/photodissociates the emitting molecular clouds around star-forming sites. Metallicity has a sub-dominant impact on the amplitude of [CII]-SFR deviations.
description: 22 pages, 14 figures, accepted by MNRAS
Quantum Chern-Simons Vortices on a Sphere
Creators: name: Romão, Nuno M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Condensed Matter (cond-mat)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The quantisation of the reduced first-order dynamics of the nonrelativistic model for Chern-Simons vortices introduced by Manton is studied on a sphere of given radius. We perform geometric quantisation on the moduli space of static solutions, using a Kaehler polarisation, to construct the quantum Hilbert space. Its dimension is related to the volume of the moduli space in the usual classical limit. The angular momenta associated with the rotational SO(3) symmetry of the model are determined for both the classical and the quantum systems. The results obtained are consistent with the interpretation of the solitons in the model as interacting bosonic particles.
description: 1+27 pages, LaTeX
The Poor/Working-Class College Students’ Challenges and Resiliency Factors Scale: Developing the P/W-CRF
Creators: Reed, Rebecca
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Multicultural education
subject: Education, Higher
subject: Social classes--Psychological aspects
subject: College students--Economic conditions

description: Social class encompasses the preferences, lifestyles, and behaviors of people in various social class groups in conjunction with the structural privileges that accompany certain social locations (Smith, 2010). Class-privileged college students typically come to campus with greater amounts of cultural capital (Bourdieu, 1980) that afford them the luxury of understanding how to navigate the middle-class environment of college (Tett, 2000). Students from poor/working- class backgrounds are, on the other hand, often without the benefit of knowing the behavioral codes and expectations of college, which can lead to negative psychological outcomes in the form of lowered self-esteem, depression, and stress. As a construct, resiliency provides a framework for understanding how some poor/working-class students are able to succeed despite these potential negative outcomes and persist through college. The study aimed to measure the class-related challenges and resiliency factors that correspond to different levels of psychological outcomes using a scale called the Poor/Working-Class Challenge and Resiliency Factor Scale (P/W-CRF).
      Data was collected using a sample of 253 four-year college students who identified as coming from a poor/working-class background. Participants filled out an online survey consisting of a demographic survey, original challenge and resiliency factor items, psychology outcome measures (self –esteem, depression, and stress), a social desirability scale, and previously validated classism and resiliency scales. Through factor analysis, two scales were generated. The first scale represented the challenges faced on campus, which was a 20-item, four factor scale with a good fit. The second, resilience scale, was a 24-item, eight factor scale with a poor fit. The overall challenge scale was found to show convergent validity with the depression, stress, and classism scales, and divergent validity with the self esteem and social desirability scales. The resilience scale demonstrated convergent validity with the self esteem and resilience scales and divergent validity with the depression and stress scales. In an effort to explore a stronger model fit for the two models, post hoc analysis offered a possible 18-item, six- factor resilience model, with a slightly improved model fit. The document will explore potential strengths and weaknesses of using these models. Finally, implications and suggestions for future research are provided in the following areas; a) Research; b) Theory; c) Clinical Practice; d) Student Affairs or Services; e) Policy; and f) High School College Counseling.
Additional file 2: of Primary care physicians’ satisfaction after health care reform: a cross-sectional study from two cities in Central Java, Indonesia
Creators: name: Chatila Maharani
name: Desie Afief
name: Weber, Dorothea
name: Marx, Michael
name: Loukanova, Svetla
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Questionnaire: Respondents’ characteristics (PCPs’ personal characteristics, job and practice characteristics, and the PCPs’ perception and experiences with their patients. (PDF 75 kb)
DNAscent v2: detecting replication forks in nanopore sequencing data with deep learning
Creators: name: Boemo, Michael A.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Software
Eukaryote microbial genomics
DNA replication
Residual neural networks
Oxford nanopore
DNAscent
Replication origins
Replication forks
Budding yeast

description: Abstract: Background: Measuring DNA replication dynamics with high throughput and single-molecule resolution is critical for understanding both the basic biology behind how cells replicate their DNA and how DNA replication can be used as a therapeutic target for diseases like cancer. In recent years, the detection of base analogues in Oxford Nanopore Technologies (ONT) sequencing reads has become a promising new method to supersede existing single-molecule methods such as DNA fibre analysis: ONT sequencing yields long reads with high throughput, and sequenced molecules can be mapped to the genome using standard sequence alignment software. Results: This paper introduces DNAscent v2, software that uses a residual neural network to achieve fast, accurate detection of the thymidine analogue BrdU with single-nucleotide resolution. DNAscent v2 also comes equipped with an autoencoder that interprets the pattern of BrdU incorporation on each ONT-sequenced molecule into replication fork direction to call the location of replication origins termination sites. DNAscent v2 surpasses previous versions of DNAscent in BrdU calling accuracy, origin calling accuracy, speed, and versatility across different experimental protocols. Unlike NanoMod, DNAscent v2 positively identifies BrdU without the need for sequencing unmodified DNA. Unlike RepNano, DNAscent v2 calls BrdU with single-nucleotide resolution and detects more origins than RepNano from the same sequencing data. DNAscent v2 is open-source and available at https://github.com/MBoemo/DNAscent. Conclusions: This paper shows that DNAscent v2 is the new state-of-the-art in the high-throughput, single-molecule detection of replication fork dynamics. These improvements in DNAscent v2 mark an important step towards measuring DNA replication dynamics in large genomes with single-molecule resolution. Looking forward, the increase in accuracy in single-nucleotide resolution BrdU calls will also allow DNAscent v2 to branch out into other areas of genome stability research, particularly the detection of DNA repair.
Two dimensional non-Fermi liquid metals: a solvable large N limit
Creators: name: Damia, Jeremias Aguilera
name: Kachru, Shamit
name: Raghu, Srinivas
name: Torroba, Gonzalo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Significant effort has been devoted to the study of "non-Fermi liquid" (NFL) metals: gapless conducting systems that lack a quasiparticle description. One class of NFL metals involves a finite density of fermions interacting with soft order parameter fluctuations near a quantum critical point. The problem has been extensively studied in a large N limit (N corresponding to the number of fermion flavors) where universal behavior can be obtained by solving a set of coupled saddle-point equations. However a remarkable study by S.-S.~Lee revealed the breakdown of such approximations in two spatial dimensions. We show that an alternate approach, in which the fermions belong to the fundamental representation of a global SU(N) flavor symmetry, while the order parameter fields transform under the adjoint representation (a "matrix large N" theory), yields a tractable large N limit. At low energies, the system consists of an overdamped boson with dynamical exponent $z=3$ coupled to a non-Fermi liquid with self energy $Σ(ω) \sim ω^{2/3}$, consistent with previous studies.
description: 8 pages, two columns, 2 figures
Additional file 1: of Primary care physiciansâ satisfaction after health care reform: a cross-sectional study from two cities in Central Java, Indonesia
Creators: name: Chatila Maharani
name: Desie Afief
name: Weber, Dorothea
name: Marx, Michael
name: Loukanova, Svetla
Publisher: name: figshare
Year: 2019
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: Questionnaire: Determining the main place of practice. (PDF 36 kb)
Petersenidia macassarica
Creators: name: Brothers, Denis J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mutillidae
Petersenidia
Petersenidia macassarica

description: Petersenidia macassarica (Zavattari, 1914); Indonesia (Sulawesi)
 Mutilla macassarica Zavattari, 1914: 80; ♀.
 Timulla (Trogaspidia) macassarica (Zavattari, 1914); Mickel 1935.
 Petersenidia macassarica (Zavattari, 1914); Lelej 1996b.
description: Published as part of Brothers, Denis J., 2022, Critical analysis of the type material of Mutillidae described from the Australasian Region (Hymenoptera), pp. 1-215 in Zootaxa 5140 (1) on page 211, DOI: 10.11646/zootaxa.5140.1.1, http://zenodo.org/record/6572181
Quantum advantage by relational queries about physically realizable equivalence classes
Creators: name: Svozil, Karl
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Relational quantum queries are sometimes capable to effectively decide between collections of mutually exclusive elementary cases without completely resolving and determining those individual instances. Thereby the set of mutually exclusive elementary cases is effectively partitioned into equivalence classes pertinent to the respective query. In the second part of the paper, we review recent progress in theoretical certifications (relative to the assumptions made) of quantum value indeterminacy as a means to build quantum oracles for randomness.
description: 8 Pages, one figure, invited contribution to TopHPC2019, Tehran, Iran, April 22-25, 2019
Multiple Rings of Millimeter Dust Emission in the HD 15115 Debris Disk
Creators: name: MacGregor, Meredith A.
name: Weinberger, Alycia J.
name: Nesvold, Erika R.
name: Hughes, A. Meredith
name: Wilner, D. J.
name: Currie, Thayne
name: Debes, John H.
name: Donaldson, Jessica K.
name: Redfield, Seth
name: Roberge, Aki
name: Schneider, Glenn
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present observations of the HD 15115 debris disk from ALMA at 1.3 mm that capture this intriguing system with the highest resolution ($0.\!\!^{\prime\prime}6$ or $29$ AU) at millimeter wavelengths to date. This new ALMA image shows evidence for two rings in the disk separated by a cleared gap. By fitting models directly to the observed visibilities within a MCMC framework, we are able to characterize the millimeter continuum emission and place robust constraints on the disk structure and geometry. In the best-fit model of a power law disk with a Gaussian gap, the disk inner and outer edges are at $43.9\pm5.8$ AU ($0.\!\!^{\prime\prime}89\pm0.\!\!^{\prime\prime}12$) and $92.2\pm2.4$ AU ($1.\!\!^{\prime\prime}88\pm0.\!\!^{\prime\prime}49$), respectively, with a gap located at $58.9\pm4.5$~AU ($1.\!\!^{\prime\prime}2\pm0.\!\!^{\prime\prime}10$) with a fractional depth of $0.88\pm0.10$ and a width of $13.8\pm5.6$ AU ($0.\!\!^{\prime\prime}28\pm0.\!\!^{\prime\prime}11$). Since we do not see any evidence at millimeter wavelengths for the dramatic east-west asymmetry seen in scattered light, we conclude that this feature most likely results from a mechanism that only affects small grains. Using dynamical modeling and our constraints on the gap properties, we are able to estimate a mass for the possible planet sculpting the gap to be $0.16\pm0.06$ $M_\text{Jup}$.
description: 9 pages, 4 figures, accepted to ApJL on May 15, 2019
Petersenidia neglecta
Creators: name: Brothers, Denis J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mutillidae
Petersenidia
Petersenidia neglecta

description: Petersenidia neglecta (Smith, 1860); Indonesia (Sulawesi)
 Mutilla neglecta Smith, 1860: 76; ♂.
 Timulla (Trogaspidia) neglecta (Smith, 1860); Mickel 1935.
 Petersenidia neglecta (Smith, 1860); Lelej 2005.
description: Published as part of Brothers, Denis J., 2022, Critical analysis of the type material of Mutillidae described from the Australasian Region (Hymenoptera), pp. 1-215 in Zootaxa 5140 (1) on page 211, DOI: 10.11646/zootaxa.5140.1.1, http://zenodo.org/record/6572181
Five-Dimensional Moving Brane Solutions with Four-Dimensional Limiting Behaviour
Creators: name: Copeland, Ed
name: Gray, James
name: Lukas, Andre
name: Skinner, David
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Under certain conditions some solutions to five-dimensional heterotic M-theory can be accurately described by the four-dimensional action of the theory - they have a four-dimensional limit. We consider the connection between solutions of four and five-dimensional heterotic M-theory when moving five-branes are present in the bulk. We begin by describing how to raise the known four-dimensional moving brane solutions to obtain approximate solutions to the five-dimensional theory, presenting for the first time the metric template necessary for this procedure. We then present the first solutions to the five-dimensional theory containing moving five-branes. We can then discuss the connection between our new exact five-dimensional solution and the four-dimensional ones. It is shown that our new solution corresponds to a solution with a static brane in four-dimensions. In other words our new solution could not have been identified as containing a moving brane from a purely four-dimensional viewpoint.
description: 18 pages, 6 figures
Petersenidia thoracica
Creators: name: Brothers, Denis J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mutillidae
Petersenidia
Petersenidia thoracica

description: Petersenidia thoracica (Smith, 1860); Indonesia (Sulawesi)
 Mutilla thoracica Smith, 1860: 76; ♂.
 Timulla (Trogaspidia) thoracica (Smith, 1860); Mickel 1935.
 Petersenidia thoracica (Smith, 1860); Lelej 2005.
description: Published as part of Brothers, Denis J., 2022, Critical analysis of the type material of Mutillidae described from the Australasian Region (Hymenoptera), pp. 1-215 in Zootaxa 5140 (1) on page 211, DOI: 10.11646/zootaxa.5140.1.1, http://zenodo.org/record/6572181
On the semiclassical treatment of anharmonic quantum oscillators via coherent states - The Toda chain revisited
Creators: name: Schliemann, John
name: Mertens, Franz G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use coherent states as a time-dependent variational ansatz for a semiclassical treatment of the dynamics of anharmonic quantum oscillators. In this approach the square variance of the Hamiltonian within coherent states is of particular interest. This quantity turns out to have natural interpretation with respect to time-dependent solutions of the semiclassical equations of motion. Moreover, our approach allows for an estimate of the decoherence time of a classical object due to quantum fluctuations. We illustrate our findings at the example of the Toda chain.
description: 12 pages, some remarks added. Version to be published in J. Phys. A: Math. Gen
Odd Bihamiltonian Structure of New Supersymmetric N=2,4 KdV And Odd SUSY Virasoro - Like Algebra
Creators: name: Popowicz, Ziemowit
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The general method of the supersymmetrization of the soliton equations with the odd (bi) hamiltonian structure is established. New version of the supersymmetric N=2,4 (Modified) Korteweg de Vries equation is given, as an example. The second odd Hamiltonian operator of the SUSY KdV equation generates the odd N=2,4 SUSY Virasoro - like algebra.
description: 13 pages LaTeX
Additional file 11: of Histone H3 lysine 4 methyltransferase is required for facultative heterochromatin at specific loci
Creators: name: Qiaoqiao Zhu
name: Mukund Ramakrishnan
name: Jinhee Park
name: Belden, William
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Expression of transcripts arising from the frq locus. FPKM values for (a) frq, (b) qrf and (c) frq-mini are shown as bar plots in WT, kmt2/â set-1 and kmt1/â dim-5 for DD (grey) and LP30 (black). (PDF 388 kb)
Promecidia Lelej 1996
Creators: name: Brothers, Denis J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mutillidae
Promecidia

description: Promecidia Lelej, 1996
 Promecidia Lelej, 1996: 15; ♀, ♂.
 Type species: Promecidia yamanei Lelej, 1996.
description: Published as part of Brothers, Denis J., 2022, Critical analysis of the type material of Mutillidae described from the Australasian Region (Hymenoptera), pp. 1-215 in Zootaxa 5140 (1) on page 211, DOI: 10.11646/zootaxa.5140.1.1, http://zenodo.org/record/6572181
Cosmic ray drift, the second knee and galactic anisotropies
Creators: name: Candia, Julian
name: Mollerach, Silvia
name: Roulet, Esteban
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the second knee in the cosmic ray spectrum (i.e. the steepening occurring at $E\simeq 4\times 10^{17}$ eV) could be related to drift effects affecting the heaviest nuclear component, the iron group nuclei, in a scenario in which the knee at $3\times 10^{15}$ eV indicates the onset of drift effects in the lighter proton component. We also study the anisotropies resulting from diffusion and drift currents in the Galaxy, showing their potential relevance to account for the AGASA observations at $E\sim 10^{18}$ eV, before the extragalactic component becomes dominant.
description: 10 pages, 4 figures
The Complementary Medicine Education and Outcomes (CAMEO) Program: Taking the knowledge to the bedside
Creators: name: Verhoef, Marja
name: Truant, Tracy
name: Balneaves, Lynda
name: Porcino, Antony
name: Ross, Brenda
Publisher: name: The University of British Columbia
Year: 2009

description: Complementary medicine (CAM) use has become part of the care experience for Canadians living with cancer. A growing body of research has demonstrated that decision making about CAM within cancer treatment and care is complex and often overwhelming for patients. Patients require support from the interprofessional health care team to effectively make safe decisions about CAM. An interprofessional team of researchers and clinicians have collaborated at the BC Cancer Agency to develop an innovative program to address patient and health care professional needs related to CAM decision making within the cancer experience. The purpose of this presentation is to describe the recent development of the Complementary Medicine Education and Outcomes (CAMEO) Program at the BC Cancer Agency in Vancouver, BC. The objectives of the CAMEO Program as well as the planned knowledge translation activities related to CAM information and decision support will be discussed. The CAMEO Program is a 4-year program that aims to: 1) support people with cancer in making CAM decisions; 2) strengthen health professionals’ knowledge and clinical skills related to CAM; and 3) facilitate the development of new CAM research knowledge. To achieve these goals, a variety of knowledge translation projects are under development, including continuing education programs for both patients and health professionals, one-on-one counselling for patients with complex needs related to CAM, and clinical tools and guidelines to assist health professionals in supporting safe and informed decisions about CAM. With the predominance of CAM use within cancer populations, the CAMEO program is an important step in the knowledge translation process that will “take the knowledge to the bedside” and provide support to cancer patients in making safe and evidence-informed decisions about CAM.
Geometric wormhole throats
Creators: name: Visser, Matt
name: Hochberg, David
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Wormholes and black holes have traditionally been treated a quite separate objects with relatively little overlap. The possibility of a connection arises in that wormholes, if they exist, might have profound influence on black holes, their event horizons, and their internal structure. After discussing some connections, we embark on an overview of what can generally be said about traversable wormhole throats. We discuss the violations of the energy conditions that typically occur at and near the throat of any traversable wormhole and emphasize the generic nature of this result. We discuss the original Morris-Thorne wormhole and its generalization to a spherically symmetric time-dependent wormhole, and also discuss spherically symmetric Brans-Dicke wormholes. We also discuss the relationship with the topological censorship theorem. Finally we turn to a rather general class of wormholes that permit explicit analysis: generic static traversable wormholes (without any symmetry). We define the wormhole throat in terms of a 2--dimensional constant-time hypersurface of minimal area. (Zero trace for the extrinsic curvature plus a ``flare--out'' condition.) This enables us to derive generalized theorems regarding violations of the energy conditions---theorems that do not involve geodesic averaging but nevertheless apply to situations much more general than the spherically symmetric Morris-Thorne traversable wormhole. [For example: the null energy condition (NEC), when suitably weighted and integrated over the wormhole throat, must be violated.]
description: 47 pages; plain LaTeX; uses epsf.sty (nine encapsulated postscript figures). To appear in the proceedings of the Haifa Workshop: The Internal Structure of Black Holes and Spacetime Singularities. (Haifa, Israel, June-July 1997) [Minor changes in the use of references.]