cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Slides: Extended Depth-of-Field Lensless Imaging Using an Optimized Radial Mask
Creators: José Reinaldo Cunha Santos A. V. Silva Neto
Publisher: name: IEEE
Year: 2025

SPS Webinar, 28 January 2025, Dr. José Reinaldo Cunha Santos A. V. Silva Neto
Lensless cameras possess significant advantages when compared to lens-based ones. By replacing the lens with a coded aperture, the camera device can be made lighter, smaller, amenable towards compressive sensing techniques, and can be designed with less physical constraints. We leverage this freedom of design to propose a novel optimized coded mask that effectively extends the depth of field of a lensless camera. In this webinar, we will start by introducing the concept of lensless imaging along with the reason as to why general lensless cameras have a limited depth of field. We follow by presenting our proposal of using a radial coded mask to extend the camera’s depth of field, as well as our novel optimization procedure that enforces a radial-like-structure on the mask while optimizing its modulation transfer function response. Finally, we will showcase multiple experimental results that confirm both the extended depth-of-field capabilities as well as improved reconstruction image quality of our lensless imager. The current limitations of our work as well as potential future research directions will also be discussed.
Dynamical derivation of Bode's law
Creators: name: Bass, Robert W.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a planetary or satellite system, idealized as n small bodies in initially coplanar, concentric orbits around a large central body, obeying Newtonian point-particle mechanics, resonant perturbations will cause dynamical evolution of the orbital radii except under highly specific mutual relationships, here derived analytically apparently for the first time. In particular, the most stable situation is achieved (in this idealized model) only when each planetary orbit is roughly twice as far from the Sun as the preceding one, as observed empirically already by Titius (1766) and Bode (1778) and used in both the discoveries of Uranus (1781) and the Asteroid Belt (1801). ETC.
description: 27 pages
Framework for Modeling Statewide Freight Movement Using Publicly Available Data
Creators: name: Mitra, Subhro
name: Tolliver, Denver
name: Mitra, Subhro
name: Tolliver, Denver
Publisher: name: Unknown
Year: 2009
Subjects: Public Economics

description: This paper presents a methodology to model statewide truck trips using publicly available data developed by federal and state organizations. This methodology is applied for the statewide freight planning of North Dakota. In the absence of ample research funding, states, counties and metropolitan planning organizations can resort to these freely available data. A state level commodity-by-industry input-output table customized from a freely available national input-output table is used to disaggregate trips to the traffic analysis zone level. These databases are available nationally; hence, the methodology discussed in this paper can be transferred to other states with relative ease.
title: Stable isotopes in precipitation
title: Stabile Isotope im Niederschlag
title: modelling intra-event variations using meteorological parameters
titleType: Subtitle
title: Modellierung von Ereignis-internen Variationen mit meteorologischen Parametern
titleType: Subtitle
Creators: name: Macdonald, Elena
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 550 Geowissenschaften

description: Die kurzfristige Variabilität der Isotopenzusammensetzung von Niederschlägen in Golm, Deutschland wurde untersucht und modelliert. Dafür wurden Isotopendaten (D/H und 18O/16O) mit einer hohen zeitlichen Auflösung sowie meteorologische Daten von einer Wetterstation und einem Mikroregenradar genutzt. Nach der Datenaufbereitung und dem Zusammenführen aller drei Datensätze wurde eine multivariate lineare Regressionsanalyse durchgeführt. Dies geschah für vier verschiedene, auf den Isotopendaten beruhende Response-Variablen und für den gesamten Datensatz sowie für die zwei Teildatensätze Sommer und Winter. Die verwendeten Response-Variablen sind die Differenzen der δ18O-Werte zu den ereignisbasierten Mittel- und Medianwerten und die Differenzen der Deuterium-Exzess-Werte zu den ereignisbasierten Mittel- und Medianwerten. Für die erhaltenen Modelle wurden die modellierten Werte mit den gemessenen Werten verglichen, wobei sich herausstellte, dass die Messwerte nicht zufriedenstellend wiedergegeben werden konnten. Daher werden am Ende mehrere Vorschläge gemacht, wie das Vorgehen und damit auch das Ergebnis der Modellierung möglicherweise verbessert werden kann.
description: The short-term variability of the isotopic composition of precipitation in Golm, Germany was assessed and modelled. Isotopic data (D/H and 18O/16O) on intra-event timescales as well as meteorological data from a weather station and a micro rain radar was used. After data preparation and the combination of all three data sets, a multivariate linear regression analysis was conducted. This was done for four different isotopic response variables and for the entire data set as well as for the two subsets Summer and Winter. The used response variables are the δ18O values as the difference to the corresponding event-based mean and as the difference to the median, and the deuterium excess values as the difference to both the mean and the median. The models were evaluated by comparing the modelled values with the observed ones. This showed that the observations could not be reproduced in a satisfactory way. Therefore, several suggestions on how to possibly improve the methods and thus the modelling results are given in the end.
Conceptualizing interprofessional working – when a lawyer joins the healthcare mix
Creators: name: Ries, Nola M
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Medicine
Biotechnology
Cancer
Science Policy

description: Research, policy and practice in the field of interprofessional collaboration have focused on how medical, nursing, allied health and social care practitioners work together to positively impact patient care. This paper extends conceptual thinking about interprofessional practice by focusing on lawyers as part of the interprofessional mix. This attention is prompted by medical–legal partnerships (MLPs), a service model by which lawyers join health care settings to assist patients with unmet, and often health-harming, legal needs. MLPs are present in around 450 hospitals and other health care sites across the United States and the model has spread to other countries, including Australia, the United Kingdom and Canada. However, enthusiasm for the MLP model is not yet matched by good evidence on how, when and for whom the model works. Interprofessional scholars contend that imprecise terminology and poor conceptualization of interprofessional arrangements hinder high-quality research and evaluation. In response to their critiques, this paper formulates a stepwise conceptual framework to guide the design, implementation and study of interprofessional arrangements that connect health, social care and legal practitioners. This framework draws on findings from national surveys of MLP initiatives in several countries and adapts several key conceptual frameworks that have been developed from systematic reviews of interprofessional working in primary health care. These conceptual frameworks are valuable because they promote clarity about different modes of interprofessional working and characterize the factors at macro (policy, funding), meso (organizational) and micro (practitioner, patient) levels that help or hinder professionals from different disciplines in working together. The paper considers factors at these three levels that require particular attention when lawyers join health care settings and proposes questions for future research in this emerging area.
Identification of the critical replication targets of CDK reveals direct regulation of replication initiation factors by the embryo polarity machinery in C. elegans
Creators: name: Gaggioli, Vincent
name: Kieninger, Manuela R.
name: Klucnika, Anna
name: Butler, Richard
name: Zegerman, Philip
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Research Article
Research and analysis methods
Biology and life sciences

description: During metazoan development, the cell cycle is remodelled to coordinate proliferation with differentiation. Developmental cues cause dramatic changes in the number and timing of replication initiation events, but the mechanisms and physiological importance of such changes are poorly understood. Cyclin-dependent kinases (CDKs) are important for regulating S-phase length in many metazoa, and here we show in the nematode Caenorhabditis elegans that an essential function of CDKs during early embryogenesis is to regulate the interactions between three replication initiation factors SLD-3, SLD-2 and MUS-101 (Dpb11/TopBP1). Mutations that bypass the requirement for CDKs to generate interactions between these factors is partly sufficient for viability in the absence of Cyclin E, demonstrating that this is a critical embryonic function of this Cyclin. Both SLD-2 and SLD-3 are asymmetrically localised in the early embryo and the levels of these proteins inversely correlate with S-phase length. We also show that SLD-2 asymmetry is determined by direct interaction with the polarity protein PKC-3. This study explains an essential function of CDKs for replication initiation in a metazoan and provides the first direct molecular mechanism through which polarization of the embryo is coordinated with DNA replication initiation factors.
Error-Disturbance Relation in Stern-Gerlach Measurements
Creators: name: Inoue, Yuki
name: Ozawa, Masanao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Although Heisenberg's uncertainty principle is represented by a rigorously proven relation about intrinsic uncertainties in quantum states, Heisenberg's error-disturbance relation (EDR) has been commonly believed to be another aspect of the principle. Based on the recent development of universally valid reformulations of Heisenberg's EDR, we study the error and disturbance of Stern-Gerlach measurements of a spin-1/2 particle. We determine the range of the possible values of the error and disturbance for arbitrary Stern-Gerlach apparatuses with the orbital degree prepared in an arbitrary Gaussian state. We show that their error-disturbance region is close to the theoretical optimal and actually violates Heisenberg's EDR in a broad range of experimental parameters. We also show the existence of orbital states in which the error is minimized by the screen at a finite distance from the magnet, in contrast to the standard assumption.
description: latex, 19 pages, 4 figures
Expansion of the Reporting System Paradigm to the United States Maritime Industry
Creators: name: Bixler, Jeffrey A.
name: Bixler, Jeffrey A.
Publisher: name: Unknown
Year: 2009
Subjects: Public Economics

description: This paper focuses on the creation of a U.S. maritime reporting system designed to alert the industry of safety incidents and prevent accidents. A brief history of aviation safety reporting will be provided, followed by an analysis of eight recent U.S. maritime accidents that reveal a gap in maritime safety information sharing. This paper will also describe the United Kingdom’s maritime reporting system and the previous work completed on a U.S. maritime reporting system. This paper concludes with the impact of terrorism on maritime security and how previous work in aviation security reporting could be incorporated into a maritime reporting system.
Slides: Differentiable Uncalibrated Imaging
Creators: Sidharth Gupta
Valentin Debarnot
Publisher: name: IEEE
Year: 2025

SPS Webinar, 6 February 2025, Dr. Sidharth Gupta, Dr. Valentin Debarnot
We will present our paper 'Differentiable Uncalibrated Imaging' where we propose a differentiable imaging framework to address uncertainty in measurement coordinates, such as sensor locations and projection angles. Our approach leverages implicit neural networks and spline-based neural fields to perform joint calibration and image reconstruction. This makes it possible, for example, to use pre-trained neural networks to configurations different from those for which they were originally trained. We will begin by presenting the general optimization framework underlying our method. Next, we will illustrate our approach to 2D and 3D computed tomography, and show that it produces improved reconstructions compared to baselines that do not account for the lack of calibration. Finally, we will explore how this framework extends to the challenging problem of 3D cryo-tomography reconstruction, tackling scenarios with misaligned and noisy input projections.
scRNA-seq assessment of the human lung, spleen, and esophagus tissue stability after cold preservation
Creators: name: Madissoon, E.
name: Wilbrey-Clark, A.
name: Miragaia, R. J.
name: Saeb-Parsy, K.
name: Mahbubani, K. T.
name: Georgakopoulos, N.
name: Harding, P.
name: Polanski, K.
name: Huang, N.
name: Nowicki-Osuch, K.
name: Fitzgerald, R. C.
name: Loudon, K. W.
name: Ferdinand, J. R.
name: Clatworthy, M. R.
name: Tsingene, A.
name: Van Dongen, S.
name: Dabrowska, M.
name: Patel, M.
name: Stubbington, M. J. T.
name: Teichmann, S. A.
name: Stegle, O.
name: Meyer, K. B.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Research
Single-cell RNA sequencing
Human
Spleen
Esophagus
Lung
Ischemic time

description: Abstract: Background: The Human Cell Atlas is a large international collaborative effort to map all cell types of the human body. Single-cell RNA sequencing can generate high-quality data for the delivery of such an atlas. However, delays between fresh sample collection and processing may lead to poor data and difficulties in experimental design. Results: This study assesses the effect of cold storage on fresh healthy spleen, esophagus, and lung from ≥ 5 donors over 72 h. We collect 240,000 high-quality single-cell transcriptomes with detailed cell type annotations and whole genome sequences of donors, enabling future eQTL studies. Our data provide a valuable resource for the study of these 3 organs and will allow cross-organ comparison of cell types. We see little effect of cold ischemic time on cell yield, total number of reads per cell, and other quality control metrics in any of the tissues within the first 24 h. However, we observe a decrease in the proportions of lung T cells at 72 h, higher percentage of mitochondrial reads, and increased contamination by background ambient RNA reads in the 72-h samples in the spleen, which is cell type specific. Conclusions: In conclusion, we present robust protocols for tissue preservation for up to 24 h prior to scRNA-seq analysis. This greatly facilitates the logistics of sample collection for Human Cell Atlas or clinical studies since it increases the time frames for sample processing.
The Stochastic School Transportation Problem
Creators: name: Ripplinger, David
name: Ripplinger, David
Publisher: name: Unknown
Year: 2005
Subjects: Research and Development/Tech Change/Emerging Technologies
Research Methods/ Statistical Methods

description: The efficient transportation of elementary and high school students within the United States has long been of interest to academics and practitioners alike. Research in the field has closely followed the development of solution techniques to general network routing problems by appropriately altering these models and the associated algorithms to address the subtleties of a particular bus routing problem. In this paper, a mathematical model that accommodates many of the sources and impacts of uncertainty is presented. Due to the impact of time windows on routing, traditional solution heuristics are unsuitable. However, a number of regular stochastic events that arise in the design and operation of pupil transportation are discussed and general solution outlines are presented.
Derived Categories of Quintic Del Pezzo Fibrations
Creators: name: Xie, Fei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F05, 14D05, 14J60, 14M15

description: We provide a semiorthogonal decomposition for the derived category of fibrations of quintic del Pezzo surfaces with rational Gorenstein singularities. There are three components, two of which are equivalent to the derived categories of the base and the remaining non-trivial component is equivalent to the derived category of a flat and finite of degree 5 scheme over the base. We introduce two methods for the construction of the decomposition. One is the moduli space approach following the work of Kuznetsov on the sextic del Pezzo fibrations and the components are given by the derived categories of fine relative moduli spaces. The other approach is that one can realize the fibration as a linear section of a Grassmannian bundle and apply Homological Projective Duality.
description: 24 pages. v2: mistakes and typos are fixed. Lemma 6.5 is added removing the dimension assumption in HPD approach. Section 7.2.3 is added proving two constructions in HPD approach coincide in characteristic 0; v3: final version
Cognition in acute TBI (Johnson & Hall, 2022)
Creators: name: Johnson, Leslie W.
name: Hall, Kellyn D.
Publisher: name: ASHA journals
Year: 2022
Subjects: subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine
subject: 170205 Neurocognitive Patterns and Neural Networks
subject: FOS: Psychology
subject: Clinical Psychology

description: Purpose: The purpose of this study was to describe and synthesize the current research regarding the prevailing cognitive domains impacted by acute traumatic brain injury (TBI) in adults. Standardized and nonstandardized assessments of cognitive function and comorbidities influencing cognitive function during the initial stages of recovery are presented to help guide clinical assessment.Method: A scoping review, guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses framework, was used to explore four electronic databases. Searches identified peer-reviewed empirical literature addressing aspects of cognitive domains impacted after TBI, cognitive assessment, and comorbidities impacting assessment in adults after acute TBI.Results: A total of 1,072 records were identified and reduced to 75 studies based on inclusion criteria. The cognitive domains most impacted in acute TBI were memory and executive function. The Glasgow Coma Scale (GCS) was the most frequently used tool to assess cognitive abilities, despite it being a measurement of consciousness, not of cognition. Psychological changes were the most commonly noted comorbidity impacting cognitive assessment.Conclusions: Assessment of cognition after acute TBI requires a multifaceted approach that considers the typical profile of cognitive impairment, as well as patient-specific factors influencing cognitive abilities following initial brain injury. The present results support the generally held view that memory and executive function deficits are common cognitive difficulties associated with acute TBI in adults. The GCS remains the most widely used tool to assess function, though numerous tools are available that specifically address cognitive domains. Acute medical comorbidities common within this stage of injury are highlighted, as well as gaps of clinical knowledge that remain.
Supplemental Material S1. Citations of included review studies.
Supplemental Material S2. Summary of review studies.
Supplemental Material S3. Cognitive assessments identified.
Johnson, L. W., & Hall, K. D. (2022). A scoping review of cognitive assessment in adults with acute traumatic brain injury. American Journal of Speech-Language Pathology. Advance online publication. https://doi.org/10.1044/2021_AJSLP-21-00132
C-axis Josephson Plasma Resonance Observed in Tl$_{2}$Ba$_{2}$CaCu$_{2}$O$_{8}$ Superconducting Thin Films using Terahertz Time-Domain Spectroscopy
Creators: name: Thorsmølle, V. K.
name: Averitt, R. D.
name: Maley, M. P.
name: Bulaevskii, L. N.
name: Helm, C.
name: Taylor, A. J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have unambiguously observed the c-axis Josephson Plasma Resonance (JPR) in high-T$_{c}$ cuprate Tl$_{2}$Ba$_{2}$CaCu$_{2}$O$_{8}$ superconducting thin films employing terahertz time-domain spectroscopy in transmission as a function of temperature in zero magnetic field. These are the first measurements of the JPR temperature dependence of a high-$T_{c}$ material in transmission. With increasing temperature, the JPR shifts from 705 GHz at 10 K to $\sim$170 GHz at 98 K corresponding to a c-axis penetration depth increasing from 20.1$\pm$0.6 $μ$m to 84$\pm$9 $μ$m. The linewidth of the JPR peak increases with temperature, indicative of an increase in the quasiparticle scattering rate. We have probed the onset of the c-axis phase coherence to $\sim$0.95T$_{c}$. The JPR vanishes above T$_{c}$ as expected.
description: 7 pages, 4 postscript figures (can also be obtained from vthorsmolle@lanl.gov), accepted in Optics Letters
Ultracold Bosonic Atoms in Disordered Optical Superlattices
Creators: name: Roth, R.
name: Burnett, K.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The influence of disorder on ultracold atomic Bose gases in quasiperiodic optical lattices is discussed in the framework of the one-dimensional Bose-Hubbard model. It is shown that simple periodic modulations of the well depths generate a rich phase diagram consisting of superfluid, Mott insulator, Bose-glass and Anderson localized phases. The detailed evolution of mean occupation numbers and number fluctuations as function of modulation amplitude and interaction strength is discussed. Finally, the signatures of the different phases, especially of the Bose-glass phase, in matter-wave interference experiments are investigated.
description: 4 pages, 4 figures, using REVTEX4
Pseudosmittia gibbistyla Andersen, Saether et Mendes. D 2010
Creators: name: Ferrington Jr, Leonard C.
name: Saether, Ole A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Pseudosmittia
Pseudosmittia gibbistyla

description: Pseudosmittia gibbistyla Andersen, Saether et Mendes
(Fig. 111 D, E)
 Pseudosmittia gibbistyla Andersen, Saether et Mendes 2010: 41.
 Material examined: BRAZIL: Santa Catarina State, Uribici Morro da Igreja, cloud forest, 1822 m a.s.l., holotype male, 18.ix.2005, L.E.M Bizzo & L.C. Pinho (MZUSP).
 Diagnostic characters: The species resembles P. umbonata by having gonostylus bilobed with secondary lobe about as long as wide an adpressed to outer base of gonostylus, median volsella nearly as long as superior volsella, and apodeme lobe apparently with wrinkles. It differs in having a broad apical bifid median volsella, inferior volsella with digitiform anterior projection, no anal point and apodeme lobe with only 2–3 wrinkles.
 The species is described in detail in Andersen et al. (2010: 41). It is known from Santa Catarina State, Brazil.
description: Published as part of Ferrington Jr, Leonard C. & Saether, Ole A., 2011, A revision of the genera Pseudosmittia Edwards, 1932, Allocladius Kieffer, 1913, and Hydrosmittia gen. n. (Diptera: Chironomidae, Orthocladiinae) 2849, pp. 1-314 in Zootaxa 2849 (1) on page 286, DOI: 10.11646/zootaxa.2849.1.1, http://zenodo.org/record/5288200
The Impact of Light Polarization Effects on Weak Lensing Systematics
Creators: name: Lin, Chien-Hao
name: Tan, Brent
name: Mandelbaum, Rachel
name: Hirata, Christopher M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A fraction of the light observed from edge-on disk galaxies is polarized due to two physical effects: selective extinction by dust grains aligned with the magnetic field, and scattering of the anisotropic starlight field. Since the reflection and transmission coefficients of the reflecting and refracting surfaces in an optical system depend on the polarization of incoming rays, this optical polarization produces both (a) a selection bias in favor of galaxies with specific orientations and (b) a polarization-dependent PSF. In this work we build toy models to obtain for the first time an estimate for the impact of polarization on PSF shapes and the impact of the selection bias due to the polarization effect on the measurement of the ellipticity used in shear measurements. In particular, we are interested in determining if this effect will be significant for WFIRST. We show that the systematic uncertainties in the ellipticity components are $8\times 10^{-5}$ and $1.1 \times 10^{-4}$ due to the selection bias and PSF errors respectively. Compared to the overall requirements on knowledge of the WFIRST PSF ellipticity ($4.7\times 10^{-4}$ per component), both of these systematic uncertainties are sufficiently close to the WFIRST tolerance level that more detailed studies of the polarization effects or more stringent requirements on polarization-sensitive instrumentation for WFIRST are required.
description: 8 pages, 3 figures, updated to published version
55Mn NMR in Mn12 acetate: Hyperfine interaction and magnetic relaxation of cluster
Creators: name: Kubo, Takeji
name: Goto, Takao
name: Koshiba, Takeshi
name: Takeda, Keiji
name: Awaga, Kunio
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The 55Mn NMR in oriented powder Mn12Ac has been investigated at 1.4-2.0 K in zero field and with external fields along the c-axis. Three kinds of 55Mn NMR composed of five-fold quadrupole-split lines for I=5/2 nuclei have been interpreted to arise from Mn4+ ion, and two crystallographically-inequivalent Mn3+ ions, respectively. It is found that the isotropic hyperfine field in the Mn4+ ion with 3d3 configuration indicates a large amount of reduction (26%) as compared with the theoretical evaluation. In the analysis for the hyperfine field of Mn3+ ions with 3d4 configuration, we have taken into account of the anisotropic dipolar contribution in addition to the Fermi-contact term in order to explain two kinds of 55Mn NMR frequencies in Mn3+ ions in inequivalent sites. By using the hyperfine coupling constants of twelve manganese ions in Mn12Ac, the total hyperfine interaction of the ferrimagnetic ground state of S=10 has been determined to amount to 0.3 cm-1 in magnitude at most, the magnitude of which corresponds to the nuclear hyperfine field he(0.32 kG seen by Mn12 cluster spin. The relaxation of the cluster magnetization was investigated by observing the recovery of the 55Mn spin-echo intensity in the fields of 0.20-1.90 T along the c-axis at 2.0 K. It was found that the magnetization of the cluster exhibits the (t-recovery in the short time regime. The relaxation time decreases with increasing external field following significant dips at every 0.45 T. This is interpreted to be due to the effects of thermally-assisted quantum tunneling between the spin states at magnetic level crossings.
description: Text 25 pages, five figures and two tables
DOES VEHICLE TAXATION IMPACT VEHICLE OWNERSHIP?
Creators: name: Bertram, Alex
name: Vilain, Pierre
name: Bertram, Alex
name: Vilain, Pierre
Publisher: name: Unknown
Year: 2005
Subjects: Research and Development/Tech Change/Emerging Technologies
Research Methods/ Statistical Methods

description: This paper is concerned with assessing the impact of vehicle taxes on vehicle ownership rates. As the debate on the appropriate levels of transport pricing has progressed, the primary concern has been to identify the externalities associated with transport and to assess their magnitude. Less visible in this literature has been an analysis of the degree to which vehicle taxes (the presumed method of internalizing transport externalities) actually impact transportation demand. The current paper assesses the degree to which current levels of vehicle taxes, which vary by country, actually impact car ownership. This study found a clear and significant relationship between vehicle taxes and levels of car ownership in a sample of 17 countries, including 15 European countries, the United States, and Japan. While the results imply that vehicle taxes can be used as an effective tool to moderate car ownership, the impact on actual vehicle miles driven would require a more detailed analysis.
Three Aphid-Transmitted Viruses Encourage Vector Migration From Infected Common Bean ( Phaseolus vulgaris ) Plants Through a Combination of Volatile and Surface Cues
Creators: name: Wamonje, Francis O.
name: Tungadi, Trisna D.
name: Murphy, Alex M.
name: Pate, Adrienne E.
name: Woodcock, Christine
name: Caulfield, John C.
name: Mutuku, J. Musembi
name: Cunniffe, Nik J.
name: Bruce, Toby J. A.
name: Gilligan, Christopher A.
name: Pickett, John A.
name: Carr, John P.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Plant Science
black bean aphid
green peach aphid
bean common mosaic virus
bean common mosaic necrosis virus
cucumber mosaic virus
non-persistent transmission
virus-induced plant volatiles
electroantennography

description: Bean common mosaic virus (BCMV), bean common mosaic necrosis virus (BCMNV), and cucumber mosaic virus (CMV) are important pathogens of common bean (Phaseolus vulgaris), a crop vital for food security in sub-Saharan Africa. These viruses are vectored by aphids non-persistently, with virions bound loosely to stylet receptors. These viruses also manipulate aphid-mediated transmission by altering host properties. Virus-induced effects on host-aphid interactions were investigated using choice test (migration) assays, olfactometry, and analysis of insect-perceivable volatile organic compounds (VOCs) using gas chromatography (GC)-coupled mass spectrometry, and GC-coupled electroantennography. When allowed to choose freely between infected and uninfected plants, aphids of the legume specialist species Aphis fabae, and of the generalist species Myzus persicae, were repelled by plants infected with BCMV, BCMNV, or CMV. However, in olfactometer experiments with A. fabae, only the VOCs emitted by BCMNV-infected plants repelled aphids. Although BCMV, BCMNV, and CMV each induced distinctive changes in emission of aphid-perceivable volatiles, all three suppressed emission of an attractant sesquiterpene, α-copaene, suggesting these three different viruses promote migration of virus-bearing aphids in a similar fashion.
On generalization of classical Hurwitz stability criteria for matrix polynomials
Creators: name: Zhan, Xuzhou
name: Dyachenko, Alexander
Publisher: name: arXiv
Year: 2019
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 34D20 (Primary) 15A24, 44A60, 47A56, 93D20, 12D10 (Secondary)

description: In this paper, we associate a class of Hurwitz matrix polynomials with Stieltjes positive definite matrix sequences. This connection leads to an extension of two classical criteria of Hurwitz stability for real polynomials to matrix polynomials: tests for Hurwitz stability via positive definiteness of block-Hankel matrices built from matricial Markov parameters and via matricial Stieltjes continued fractions. We obtain further conditions for Hurwitz stability in terms of block-Hankel minors and quasiminors, which may be viewed as a weak version of the total positivity criterion.
description: 26 pages
Additional file 3 of Sequence imputation from low density single nucleotide polymorphism panel in a black poplar breeding population
Creators: name: Pégard, Marie
name: Rogier, Odile
name: Bérard, Aurélie
name: Faivre-Rampant, Patricia
name: Marie-Christine Paslier
name: Bastien, Catherine
name: Jorge, Véronique
name: Sánchez, Leopoldo
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 60506 Virology

description: Relationship between the sequencing depth and imputation quality variables at individual level. On the top of the diagonal: Pearson’s correlations. The distribution of each variable is shown on the diagonal. On the bottom of the diagonal: the bivariate scatter plots. (PDF 58.3 kb)
Three Decades of Advances in Arabinogalactan-Protein Biosynthesis
Creators: name: Silva, Jessy
name: Ferraz, Ricardo
name: Dupree, Paul
name: Showalter, Allan M.
name: Coimbra, Sílvia
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Plant Science
arabinogalactan-proteins, arabinogalactan-proteinbiosynthesis
glypiation
proline hydroxylation
glycosylation
glycosyltransferases
hydroxyproline
cell wall

description: Arabinogalactan-proteins (AGPs) are a large, complex, and highly diverse class of heavily glycosylated proteins that belong to the family of cell wall hydroxyproline-rich glycoproteins. Approximately 90% of the molecules consist of arabinogalactan polysaccharides, which are composed of arabinose and galactose as major sugars and minor sugars such as glucuronic acid, fucose, and rhamnose. About half of the AGP family members contain a glycosylphosphatidylinositol (GPI) lipid anchor, which allows for an association with the outer leaflet of the plasma membrane. The mysterious AGP family has captivated the attention of plant biologists for several decades. This diverse family of glycoproteins is widely distributed in the plant kingdom, including many algae, where they play fundamental roles in growth and development processes. The journey of AGP biosynthesis begins with the assembly of amino acids into peptide chains of proteins. An N-terminal signal peptide directs AGPs toward the endoplasmic reticulum, where proline hydroxylation occurs and a GPI anchor may be added. GPI-anchored AGPs, as well as unanchored AGPs, are then transferred to the Golgi apparatus, where extensive glycosylation occurs by the action of a variety glycosyltransferase enzymes. Following glycosylation, AGPs are transported by secretory vesicles to the cell wall or to the extracellular face of the plasma membrane (in the case of GPI-anchored AGPs). GPI-anchored proteins can be released from the plasma membrane into the cell wall by phospholipases. In this review, we present an overview of the accumulated knowledge on AGP biosynthesis over the past three decades. Particular emphasis is placed on the glycosylation of AGPs as the sugar moiety is essential to their function. Recent genetics and genomics approaches have significantly contributed to a broader knowledge of AGP biosynthesis. However, many questions remain to be elucidated in the decades ahead.
The value of power-related options under spectrally negative Lévy processes
Creators: name: Aguilar, Jean-Philippe
Publisher: name: arXiv
Year: 2019
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: FOS: Economics and business
subject: 60E07, 60G51, 60G52, 62P05, 91G20

description: We provide analytical tools for pricing power options with exotic features (capped or log payoffs, gap options ...) in the framework of exponential Lévy models driven by one-sided stable or tempered stable processes. Pricing formulas take the form of fast converging series of powers of the log-forward moneyness and of the time-to-maturity; these series are obtained via a factorized integral representation in the Mellin space evaluated by means of residues in $\mathbb{C}$ or $\mathbb{C}^2$. Comparisons with numerical methods and efficiency tests are also discussed.
description: Minor typos corrected + DOI added + MSC classes added
Ultracold collisions in tight harmonic traps: Quantum defect model and application to metastable helium atoms
Creators: name: Peach, Gillian
name: Whittingham, Ian B
name: Beams, Timothy J
Publisher: name: arXiv
Year: 2002
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We analyze a system of two colliding ultracold atoms under strong harmonic confinement from the viewpoint of quantum defect theory and formulate a generalized self-consistent method for determining the allowed energies. We also present two highly efficient computational methods for determining the bound state energies and eigenfunctions of such systems. The perturbed harmonic oscillator problem is characterized by a long asymptotic region beyond the effective range of the interatomic potential. The first method, which is based on quantum defect theory and is an adaptation of a technique developed by one of the authors (GP) for highly excited states in a modified Coulomb potential, is very efficient for integrating through this outer region. The second method is a direct numerical solution of the radial Schrödinger equation using a discrete variable representation of the kinetic energy operator and a scaled radial coordinate grid. The methods are applied to the case of trapped spin-polarized metastable helium atoms. The calculated eigenvalues agree very closely for the two methods, and with those computed self-consistently using the generalized self-consistent method.
description: 11 pages,REVTEX, text substantially revised, title modified
Pseudosmittia catarinense Andersen, Saether et Mendes 2010
Creators: name: Ferrington Jr, Leonard C.
name: Saether, Ole A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Pseudosmittia
Pseudosmittia catarinense

description: Pseudosmittia catarinense Andersen, Saether et Mendes, 2010: 36.
 Material examined: BRAZIL: Santa Catarina State, Urubici, Morro da Igreja, cloud forest, 1822m a.s.l., Malaise trap, holotype male, 18.ix-5.xii.2004, L.C. Pinho & L.E. M. Bizzo (MZUSP).
 Diagnostic characters: The male imago can be separated from other species of the genus by the combination of gonostylus furcate with secondary lobe shorter than main lobe; anal point narrow, sharply triangular with conspicuous microtrichia to apex; and median volsella composed of a single branch. The anal lobe of the wing is better developed than in other members of the subgroup. The accessory lobe of the inferior volsella is situated posterior to main lobe.
 The species is described in detail in Andersen et al. (2010: 36). It is known from Santa Catarina State, Brazil.
description: Published as part of Ferrington Jr, Leonard C. & Saether, Ole A., 2011, A revision of the genera Pseudosmittia Edwards, 1932, Allocladius Kieffer, 1913, and Hydrosmittia gen. n. (Diptera: Chironomidae, Orthocladiinae) 2849, pp. 1-314 in Zootaxa 2849 (1) on page 286, DOI: 10.11646/zootaxa.2849.1.1, http://zenodo.org/record/5288200
Fundamental Studies on Bubble-Microplastic Interaction in Sodium Chloride for Microplastic Recovery via Flotation
Creators: name: Joshua, Abraham Matthews
Publisher: name: Monash University
Year: 2025
Subjects: classificationCode: 340603
subject: Colloid and surface chemistry

description: This PhD thesis explores how microplastics interact with bubbles in salty water to improve their removal from water. The study found that higher salt levels make microplastics more likely to stick to bubbles, making it easier to remove them through flotation. By measuring various factors to quantify bubble-particle attachment, the research showed that polyethylene (PE) and polystyrene (PS) microplastics attach more readily to bubbles as salt concentration increases. Experiments using a special flotation column confirmed these findings, showing improved recovery rates for both types of microplastics with more salt. This research helps optimize techniques for cleaning microplastics from water.
Deep Sequencing of B Cell Receptor Repertoires From COVID-19 Patients Reveals Strong Convergent Immune Signatures
Creators: name: Galson, Jacob D.
name: Schaetzle, Sebastian
name: Bashford-Rogers, Rachael J. M.
name: Raybould, Matthew I. J.
name: Kovaltsuk, Aleksandr
name: Kilpatrick, Gavin J.
name: Minter, Ralph
name: Finch, Donna K.
name: Dias, Jorge
name: James, Louisa K.
name: Thomas, Gavin
name: Lee, Wing-Yiu Jason
name: Betley, Jason
name: Cavlan, Olivia
name: Leech, Alex
name: Deane, Charlotte M.
name: Seoane, Joan
name: Caldas, Carlos
name: Pennington, Daniel J.
name: Pfeffer, Paul
name: Osbourn, Jane
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: COVID-19
subject: SARS-CoV-2
subject: B-cell repertoire
subject: BCR
subject: antibody
subject: convergence

description: Deep sequencing of B cell receptor (BCR) heavy chains from a cohort of 31 COVID-19 patients from the UK reveals a stereotypical naive immune response to SARS-CoV-2 which is consistent across patients. Clonal expansion of the B cell population is also observed and may be the result of memory bystander effects. There was a strong convergent sequence signature across patients, and we identified 1,254 clonotypes convergent between at least four of the COVID-19 patients, but not present in healthy controls or individuals following seasonal influenza vaccination. A subset of the convergent clonotypes were homologous to known SARS and SARS-CoV-2 spike protein neutralizing antibodies. Convergence was also demonstrated across wide geographies by comparison of data sets between patients from UK, USA, and China, further validating the disease association and consistency of the stereotypical immune response even at the sequence level. These convergent clonotypes provide a resource to identify potential therapeutic and prophylactic antibodies and demonstrate the potential of BCR profiling as a tool to help understand patient responses.
An Extraordinary Scattered Broad Emission Line in a Type 2 QSO
Creators: name: Schmidt, G. D.
name: Smith, P. S.
name: Foltz, C. B.
name: Hines, D. C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An infrared-selected, narrow-line QSO has been found to exhibit an extraordinarily broad Halpha emission line in polarized light. Both the extreme width (35,000 km/sec full-width at zero intensity) and 3,000 km/sec redshift of the line centroid with respect to the systemic velocity suggest emission in a deep gravitational potential. An extremely red polarized continuum and partial scattering of the narrow lines at a position angle common to the broad-line emission imply extensive obscuration, with few unimpeded lines of sight to the nucleus.
description: 4 pages, 1 figure, to appear in the Astrophysical Journal Letters
Co-expression Networks From Gene Expression Variability Between Genetically Identical Seedlings Can Reveal Novel Regulatory Relationships
Creators: name: Cortijo, Sandra
name: Bhattarai, Marcel
name: Locke, James C. W.
name: Ahnert, Sebastian E.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Plant Science
networks
gene expression
co-expression analysis
variability
modules
seedlings
Arabidopsis

description: Co-expression networks are a powerful tool to understand gene regulation. They have been used to identify new regulation and function of genes involved in plant development and their response to the environment. Up to now, co-expression networks have been inferred using transcriptomes generated on plants experiencing genetic or environmental perturbation, or from expression time series. We propose a new approach by showing that co-expression networks can be constructed in the absence of genetic and environmental perturbation, for plants at the same developmental stage. For this, we used transcriptomes that were generated from genetically identical individual plants that were grown under the same conditions and for the same amount of time. Twelve time points were used to cover the 24-h light/dark cycle. We used variability in gene expression between individual plants of the same time point to infer a co-expression network. We show that this network is biologically relevant and use it to suggest new gene functions and to identify new targets for the transcriptional regulators GI, PIF4, and PRR5. Moreover, we find different co-regulation in this network based on changes in expression between individual plants, compared to the usual approach requiring environmental perturbation. Our work shows that gene co-expression networks can be identified using variability in gene expression between individual plants, without the need for genetic or environmental perturbations. It will allow further exploration of gene regulation in contexts with subtle differences between plants, which could be closer to what individual plants in a population might face in the wild.
Counting statistics for arbitrary cycles in quantum pumps
Creators: name: Makhlin, Yuriy
name: Mirlin, Alexander
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Statistics of charge transport in an adiabatic pump are determined by the dynamics of the scattering matrix S(t). We show that, up to an integer offset, the statistics depend only on the corresponding path N(t)=S^\daggerσ_3 S in the coset space (the sphere for a single channel). For a general loop S(t) we solve for the noise-minimizing pumping strategy. The average current is given by the area enclosed by N(t) in the coset space; its minimal noise by the area of a minimal surface (soap film) spanned by N(t) in the space of all matrices. We formulate conditions for quantization of the pumped charge.
description: 4 pages, 2 figures
Additional file 2 of Sequence imputation from low density single nucleotide polymorphism panel in a black poplar breeding population
Creators: name: Pégard, Marie
name: Rogier, Odile
name: Bérard, Aurélie
name: Faivre-Rampant, Patricia
name: Marie-Christine Paslier
name: Bastien, Catherine
name: Jorge, Véronique
name: Sánchez, Leopoldo
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Relationship between the proportion of alleles correctly imputed by each leave-one-out individual (Propi) and the lower bound individual proportion of SNP correctly imputed lbPropi).The different colors correspond to the different individual classes in the mating regimes, and each point represents the values for one chromosome and one individual. (PDF 11.1 kb)
Kinetic Temperatures for a Granular Mixture
Creators: name: Dahl, Steven R.
name: Hrenya, Christine M.
name: Garzo, Vicente
name: Dufty, James W.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: An isolated mixture of smooth, inelastic hard spheres supports a homogeneous cooling state with different kinetic temperatures for each species. This phenomenon is explored here by molecular dynamics simulation of a two component fluid, with comparison to predictions of the Enskog kinetic theory. The ratio of kinetic temperatures is studied for two values of the restitution coefficient, $α=0.95$ and 0.80, as a function of mass ratio, size ratio, composition, and density. Good agreement between theory and simulation is found for the lower densities and higher restitution coefficient; significant disagreement is observed otherwise. The phenomenon of different temperatures is also discussed for driven systems, as occurs in recent experiments. Differences between the freely cooling state and driven steady states are illustrated.
description: 7 figures., to be published in Phys. Rev. E