cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An adjusted partial least squares regression framework to utilize additional exposure information in environmental mixture data analysis
Creators: name: Du, Ruofei
name: Luo, Li
name: Hudson, Laurie G.
name: Nozadi, Sara
name: Lewis, Johnnye
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy

description: In a large-scale environmental health population study that is composed of subprojects, often different fractions of participants out of the total enrolled have measures of specific outcomes. It’s conceptually reasonable to assume the association study would benefit from utilizing additional exposure information from those with a specific outcome not measured. Partial least squares regression is a practical approach to determine the exposure-outcome associations for mixture data. Like a typical regression approach, however, the partial least squares regression requires that each data observation must have both complete covariate and outcome for model fitting. In this paper, we propose novel adjustments to the general partial least squares regression to estimate and examine the association effects of individual environmental exposure to an outcome within a more complete context of the study population’s environmental mixture exposures. The proposed framework takes advantage of the bilinear model structure. It allows information from all participants, with or without the outcome values, to contribute to the model fitting and the assessment of association effects. Using this proposed framework, incorporation of additional information will lead to smaller root mean square errors in the estimation of association effects, and improve the ability to assess the significance of the effects.
Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
Creators: name: Hartlap, J.
name: Simon, P.
name: Schneider, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: AIMS. The maximum-likelihood method is the standard approach to obtain model fits to observational data and the corresponding confidence regions. We investigate possible sources of bias in the log-likelihood function and its subsequent analysis, focusing on estimators of the inverse covariance matrix. Furthermore, we study under which circumstances the estimated covariance matrix is invertible. METHODS. We perform Monte-Carlo simulations to investigate the behaviour of estimators for the inverse covariance matrix, depending on the number of independent data sets and the number of variables of the data vectors. RESULTS. We find that the inverse of the maximum-likelihood estimator of the covariance is biased, the amount of bias depending on the ratio of the number of bins (data vector variables), P, to the number of data sets, N. This bias inevitably leads to an -- in extreme cases catastrophic -- underestimation of the size of confidence regions. We report on a method to remove this bias for the idealised case of Gaussian noise and statistically independent data vectors. Moreover, we demonstrate that marginalisation over parameters introduces a bias into the marginalised log-likelihood function. Measures of the sizes of confidence regions suffer from the same problem. Furthermore, we give an analytic proof for the fact that the estimated covariance matrix is singular if P>N.
description: 6 pages, 3 figures, A&A, in press, shortened version
Rafnia capensis Schinz
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Rafnia
Rafnia capensis

description: Liparia opposita Linnaeus, Mantissa Plantarum Altera: 269. 1771, nom. illeg.
["Habitat ad Cap. b. spei."] Sp. Pl., ed. 2, 2: 995 (1763). RCN: 5433.
 Replaced synonym: Spartium capense L. (1760).
 Conserved type (Campbell & al. in Taxon 48: 833. 1999): South Africa. Western Cape Province, Cape of Good Hope Nature Reserve, Campbell & Van Wyk 151 (NBG; iso- K, MO, PRE).
 Current name: Rafnia capensis (L.) Schinz (Fabaceae: Faboideae).
 Note: Liparia opposita L. is an illegitimate renaming of Spartium capense L., and therefore homotypic with it. Campbell-Young & al. (in Taxon 48: 833. 1999) successfully proposed S. capensefor conservation with a conserved type because all original elements for the name belong to Rafnia angulata Thunb.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part L), pp. 610-650 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 635, DOI: 10.5281/zenodo.291971
Extended Hamiltonian Formalism and Lorentz-Violating Lagrangians
Creators: name: Colladay, Don
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new perspective on the classical mechanical formulation of particle trajectories in lorentz-violating theories is presented. Using the extended hamiltonian formalism, a Legendre Transformation between the associated covariant Lagrangian and Hamiltonian varieties is constructed. This approach enables calculation of trajectories using hamilton's equations in momentum space and the Euler-Lagrange equations in velocity space away from certain singular points that arise in the theory. Singular points are naturally de-singularized by requiring the trajectories to be smooth functions of both velocity and momentum variables. In addition, it is possible to identify specific sheets of the dispersion relations that correspond to specific solutions for the lagrangian. Examples corresponding to bipartite Finsler functions are computed in detail. A direct connection between the lagrangians and the field-theoretic solutions to the Dirac equation is also established for a special case.
description: 15 pages
Normal and transplanted rat kidneys: diffusion MR imaging at 7 T.
Creators: name: Dewen  Yang
name: Ye, Qing
name: Williams, Donald S.
name: T. Kevin  Hitchens
name: Ho, Chien
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: PURPOSE: To investigate the feasibility of obtaining reproducible apparent diffusion coefficient (ADC) maps of normal rat kidneys by using respiratory-triggered spin-echo diffusion-weighted magnetic resonance (MR) imaging, to investigate the sensitivity of ADC maps in the evaluation of renal blood flow, and to use this technique to monitor acute graft rejection in transplanted rat kidneys. MATERIALS AND METHODS: Spin-echo diffusion-weighted MR imaging measurements were performed in 20 normal rats and nine rats that had undergone transplantation (six rats had received allografts; three had received isografts) at 7 T. To evaluate the effect of alteration in blood flow and water transport function, angiotensin II was infused in six normal rats and a series of spin-echo diffusion-weighted MR images was obtained at five time points. Transplanted kidneys were monitored by obtaining spin-echo diffusion-weighted MR images and gradient-echo MR images every 2 hours for 8 hours on postoperative day 4. Statistical analysis was performed with repeated-measures multivariate analysis of variance and the paired t test. RESULTS: No significant differences in ADC values were observed between right and left kidneys in all three orthogonal directions; however, a small difference was observed between the cortex and medulla. ADC values in the cephalocaudal and mediolateral directions were higher than those in the anteroposterior direction (P35%, P CONCLUSION: These findings suggest that reproducible renal ADC maps can be obtained in rats by using spin-echo diffusion-weighted MR imaging at 7 T. Spin-echo diffusion-weighted MR imaging may have potential as a noninvasive tool for monitoring early graft rejection after kidney transplantation.
A General and Yet Efficient Scheme for Sub-Nyquist Radar Processing
Creators: name: Chen, Shengyao
name: Xi, Feng
name: Liu, Zhong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We study the target parameter estimation for sub-Nyquist pulse-Doppler radar. Several past works have addressed this problem but either have low estimation accuracy for off-grid targets, take large computation load, or lack versatility for analog-to-information conversion (AIC) systems. To overcome these difficulties, we present a general and efficient estimation scheme. The scheme first formulates a general model in the sense that it is applicable to all AICs regardless of whether the targets are on or off the grids. The estimation of Doppler shifts and delays is performed sequentially, in which the Doppler estimation is formulated into a spatial spectrum estimation problem and the delay estimation is decomposed into a series of compressive parameter estimation problems with each corresponding to an estimated Doppler shift. By the sequential and decomposed processing, the computational complexity is substantially reduced, and by the parametric estimation techniques, the high accurate estimation is obtained. Theoretical analyses and numerical experiments show the effectiveness and the correctness of the proposed scheme.
description: 13 pages, 3 figures
Additivity for parametrized topological Euler characteristic and Reidemeister torsion
Creators: name: Badzioch, Bernard
name: Dorabiala, Wojciech
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19D10, 55R70

description: Dwyer, Weiss, and Williams have recently defined the notions of parametrized topological Euler characteristic and parametrized topological Reidemeister torsion which are invariants of bundles of compact topological manifolds. We show that these invariants satisfy additivity formulas paralleling the additive properties of the classical Euler characteristic and Reidemeister torsion of finite CW-complexes.
description: Minor stylistic changes; published in K-Theory
title: ADCO, Cart. 186 (11 H 71), f. 0446r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0446r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Noninvasive imaging of quantum dots in mice.
Creators: name: Ballou, Byron
name: B. Christoffer  Lagerholm
name: Ernst, Lauren A.
name: Bruchez, Marcel
name: Waggoner, Alan
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Quantum dots having four different surface coatings were tested for use in in vivo imaging. Localization was successfully monitored by fluorescence imaging of living animals, by necropsy, by frozen tissue sections for optical microscopy, and by electron microscopy, on scales ranging from centimeters to nanometers, using only quantum dots for detection. Circulating half-lives were found to be less than 12 min for amphiphilic poly(acrylic acid), short-chain (750 Da) methoxy-PEG or long-chain (3400 Da) carboxy-PEG quantum dots, but approximately 70 min for long-chain (5000 Da) methoxy-PEG quantum dots. Surface coatings also determined the in vivo localization of the quantum dots. Long-term experiments demonstrated that these quantum dots remain fluorescent after at least four months in vivo.
Multiscale Modelling for Tokamak Pedestals
Creators: name: Abel, Ian
name: Hallenbert, Axel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Pedestal modelling is crucial to predict the performance of future fusion devices. Current modelling efforts suffer either from a lack of kinetic physics, or an excess of computational complexity. To ameliorate these problems, we take a first-principles multiscale approach to the pedestal. We will present three separate sets of equations, covering the dynamics of Edge Lo- calised Modes, the inter-ELM pedestal, and pedestal turbulence, respectively. Precisely how these equations should be coupled to each other are covered in detail. This framework is completely self-consistent; it is derived from first principles by means an asymptotic expansion in appropriate small parameters. The derivation exploits the narrowness of the pedestal region, the smallness of the thermal gyroradius, and the low plasma $β$ typical of current pedestal operation to achieve its simplifications. The relationship between this framework and gyrokinetics is analysed, and possibilities to directly match this framework onto multiscale gyrokinetics are explored. A detailed comparison between our model and other models in the literature is performed. Finally, the potential for matching this framework onto an open-field-line region is discussed.
description: 49 pages; Accepted for publication in the Journal of Plasma Physics
Model Atmosphere Analysis of the Weakly Magnetic DZ White Dwarf G165-7
Creators: name: Dufour, P.
name: Bergeron, P.
name: Schmidt, G. D.
name: Liebert, James
name: Harris, H. C.
name: Knapp, G. R.
name: Anderson, S. F.
name: Schneider, D. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A reanalysis of the strongly metal-blanketed DZ white dwarf G165-7 is presented. An improved grid of model atmospheres and synthetic spectra is used to analyze BVRI, JHK, and ugriz photometric observations as well as a high quality Sloan Digital Sky Survey spectrum covering the energy distribution from 3600 to 9000 A. The detection of splitting in several lines of Ca, Na, and Fe, suggesting a magnetic field of Bs~650 kG, is confirmed by spectropolarimetric observations that reveal as much as +/- 7.5% circular polarization in many of the absorption lines, most notably Na, Mg, and Fe. Our combined photometric and spectroscopic fit yields Teff = 6440 K, log g=7.99, log H/He=-3.0 and log Ca/He=-8.1. The other heavy elements have solar ratios with respect to calcium, with the exception of Na and Cr that had to be reduced by a factor of two and three, respectively. A crude polarization model based upon the observed local spectral flux gradient yields a longitudinal field of 165 kG, consistent with the mean surface field inferred from the Zeeman splitting. The inclusion of this weak magnetic field in our synthetic spectrum calculations, even in an approximate fashion, is shown to improve our fit significantly.
description: 26 pages, 7 figures, 2 tables, accepted for publication in ApJ
Amphithalea Ecklon & Zeyher 1836
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Amphithalea

description: Liparia sericea Linnaeus, Mantissa Plantarum Altera: 269. 1771.
RCN: 5436.
Type not designated.
Original material: none traced.
 Current name:  Amphithalea sp.  (Fabaceae: Faboideae).
 Note: The application of this name is uncertain (see Schutte & Van Wyk in Taxon 42: 46. 1993).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part L), pp. 610-650 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 635, DOI: 10.5281/zenodo.291971
Sentinel-2 Reveals Spatiotemporal Dynamics of Submerged Aquatic Vegetation in Lake Iseo (Italy)
Creators: name: Bolpagni, Rossano
name: Bresciani, Mariano
name: Ghirardi Nicola
name: Valerio, Giulia
name: Pilotti, Marco
name: Giardino, Claudia
Publisher: name: Zenodo
Year: 2019

description: Poster at LPS 2019, Milan Introduction
 To investigate the dynamics of submerged aquatic vegetation (SAV) in lakes is a
 challenging topic due to the complex processes involved in SAV successional
 patterns. SAV acts as ecosystem engineer; however, SAV is also extremely sensitive
 to human perturbations (i.e. eutrophication). Accordingly, understanding the
 spatio-temporal drivers is useful for elaborate better management practices. Aims & Hypotheses
 Or aims are: 1) to map the distribution of submerged rooted macrophytes of Iseo
 Lake in the period from 2015 to 2017; and 2) to evaluate their spatio–temporal
 dynamics. Our main hypothesis is that macrophyte beds are characterized by notnegligible
 variations in colonized areas, with an high intrinsic cover-abundance
 dynamicity.
A posteriori error analysis for random scalar conservation laws using the Stochastic Galerkin method
Creators: name: Giesselmann, Jan
name: Meyer, Fabian
name: Rohde, Christian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35L65, 35R60 (Primary) 65M15, 65M60 (Secondary)

description: In this article we present an a posteriori error estimator for the spatial-stochastic error of a Galerkin-type discretisation of an initial value problem for a random hyperbolic conservation law. For the stochastic discretisation we use the Stochastic Galerkin method and for the spatial-temporal discretisation of the Stochastic Galerkin system a Runge-Kutta Discontinuous Galerkin method. The estimator is obtained using smooth reconstructions of the discrete solution. Combined with the relative entropy stability framework of Dafermos \cite{dafermos2005hyperbolic}, this leads to computable error bounds for the space-stochastic discretisation error. Moreover, it turns out that the error estimator admits a splitting into one part representing the spatial error, and a remaining term, which can be interpreted as the stochastic error. This decomposition allows us to balance the errors arising from spatial and stochastic discretisation. We conclude with some numerical examples confirming the theoretical findings.
description: 27 pages, 7 figures
Noninvasive evaluation of cardiac allograft rejection by cellular and functional cardiac magnetic resonance.
Creators: name: Yi-Jen L. Wu
name: Ye, Qing
name: Sato, Kazuya
name: Foley, Lesley
name: T. Kevin  Hitchens
name: Ho, Chien
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: OBJECTIVES: We sought to use cardiac magnetic resonance (CMR) to establish sensitive and reliable indexes for noninvasive detection of acute cardiac allograft rejection. BACKGROUND: Appropriate surveillance for acute allograft rejection is vitally important for graft survival. The current gold standard for diagnosing and staging rejection after organ transplantation is endomyocardial biopsy, which is not only invasive but also prone to sampling errors. The motivation of this study is to establish a CMR-based alternative that is noninvasive and sensitive for early detection of allograft rejection before irreversible damage occurs. METHODS: We employed a noninvasive 2-pronged approach to detect acute cardiac allograft rejection using a rodent working heart and lung transplantation model. We used CMR to detect immune-cell infiltration at sites of rejection by monitoring the accumulation of dextran-coated ultra-small superparamagnetic-iron-oxide-labeled immune cells (in particular macrophages) in vivo. Simultaneously, we used CMR tagging and strain analysis to detect regional myocardial function loss resulting from acute rejection. RESULTS: Immune cells infiltration, mainly macrophages and monocytes, could be identified with CMR by in vivo labeling with ultra-small superparamagnetic-iron-oxide. Our data show that immune-cell infiltration in cardiac allograft rejection was highly heterogeneous. Thus, it is not surprising to find inconsistencies between rejection and endomyocardial biopsy results because of the limited number and small samples available. Tagged CMR and strain analysis showed that, as with immune-cell infiltration, ventricular functional loss was also heterogeneous. Although changes in global systolic function were generally not observed until the later stages of rejection, our data revealed that a functional index derived from local strain analysis correlated well with rejection grades, which may be a more sensitive parameter for detecting early rejection. CONCLUSIONS: CMR is noninvasive and provides a 3-dimensional, whole-heart perspective of the rejection status, potentially allowing more reliable detection of acute allograft rejection.
Techniques to Analyze and Forecast Mortality
Creators: name: Li, Han
Publisher: name: Monash University
Year: 2017
Subjects: classificationCode: 380299
subject: Econometrics not elsewhere classified

description: During the last few
decades growth in life expectancy has resulted in increased pressure on
personal and public finances. The increasing amount of attention paid on
longevity risk and funding for old age has created the need for precise
mortality models and accurate mortality forecasts. Indeed, many attempts have
been made to understand mortality and there has been a rich literature on
mortality modeling which goes back to the very early years. The overall aim of
this PhD thesis is to have a better understanding of mortality patterns and
improve the accuracy of future mortality projections. In this thesis, we apply
various econometric and statistical techniques to mortality data from a wide
range of developed countries including the Great Britain, the United States,
Australia, Netherlands, Japan, France and Spain over the post-war period
1950–2009. Contributions have been made to the existing literature with focus given
to the forecasting perspective of models and to the analysis of cohort effects. In particular we apply
methods familiar to the econometrics literature to the area of mortality where
they are less applied.

   The four main chapters of the thesis link to each other in a
comprehensive way. In Chapter 2, we apply a semiparametric local linear
estimation framework to stochastic mortality models which frees the commonly
used Poisson assumption on number of deaths and improves upon the forecasting ability of the model. Then in Chapter 3 we introduce a
flexible functional form approach aiming to capture cohort effects via the use
of Legendre orthogonal polynomials in age and time dimensions. We allow for
greater flexibility in the model by considering two-dimensional polynomials
instead of one-dimensional polynomials in either age or time dimension. In order to further understand the nature of cohort effects and be
able to evaluate and compare the strength of cohort effects across different
countries, in Chapter 4 of the thesis we develop a two-dimensional kernel
smoothing mortality model which enables us to analyze cohort effects in a
quantitative manner. Finally, based on the empirical results from the first
three main chapters, we conduct an investigation to compare the forecasting
performance among different types of mortality models. We conclude that to
improve forecast accuracy, more emphasis should be given to recent data over
historical data during the forecasting process.
NMR investigation of the dynamics of tryptophan side-chains in hemoglobins.
Creators: name: Yuan, Yue
name: Simplaceanu, Virgil
name: Lukin, Jonathan A.
name: Ho, Chien
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: NMR relaxation measurements of 15N spin-lattice relaxation rate (R(1)), spin-spin relaxation rate (R(2)), and heteronuclear nuclear Overhauser effect (NOE) have been carried out at 11.7T and 14.1T as a function of temperature for the side-chains of the tryptophan residues of 15N-labeled and/or (2H,15N)-labeled recombinant human normal adult hemoglobin (Hb A) and three recombinant mutant hemoglobins, rHb Kempsey (betaD99N), rHb (alphaY42D/betaD99N), and rHb (alphaV96W), in the carbonmonoxy and the deoxy forms as well as in the presence and in the absence of an allosteric effector, inositol hexaphosphate (IHP). There are three Trp residues (alpha14, beta15, and beta37) in Hb A for each alphabeta dimer. These Trp residues are located in important regions of the Hb molecule, i.e. alpha14Trp and beta15Trp are located in the alpha(1)beta(1) subunit interface and beta37Trp is located in the alpha(1)beta(2) subunit interface. The relaxation experiments show that amino acid substitutions in the alpha(1)beta(2) subunit interface can alter the dynamics of beta37Trp. The transverse relaxation rate (R(2)) for beta37Trp can serve as a marker for the dynamics of the alpha(1)beta(2) subunit interface. The relaxation parameters of deoxy-rHb Kemspey (betaD99N), which is a naturally occurring abnormal human hemoglobin with high oxygen affinity and very low cooperativity, are quite different from those of deoxy-Hb A, even in the presence of IHP. The relaxation parameters for rHb (alphaY42D/betaD99N), which is a compensatory mutant of rHb Kempsey, are more similar to those of Hb A. In addition, TROSY-CPMG experiments have been used to investigate conformational exchange in the Trp residues of Hb A and the three mutant rHbs. Experimental results indicate that the side-chain of beta37Trp is involved in a relatively slow conformational exchange on the micro- to millisecond time-scale under certain experimental conditions. The present results provide new dynamic insights into the structure-function relationship in hemoglobin.
Spectral State Transitions of the Ultraluminous X-ray Sources X-1 and X-2 in NGC 1313
Creators: name: Feng, Hua
name: Kaaret, Philip
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: X-ray spectral state transitions are a key signature of black hole X-ray binaries and follow a well-defined pattern. We examined 12 XMM-Newton observations of the nearby spiral galaxy NGC 1313, which harbors two compact ultraluminous X-ray sources (ULXs), X-1 and X-2, in order to determine if the state transitions in ULXs follow the same pattern. For both sources, the spectra were adequately fitted by an absorbed power-law with the addition of a low temperature (kT=0.1~0.3 keV) disk blackbody component required in 6 of the 12 observations. As the X-ray luminosity of X-1 increases to a maximum at 3x10^40 ergs/s, the power-law photon index softens to 2.5-3.0. This behavior is similar to the canonical spectral state transitions in Galactic black hole binaries, but the source never enters the high/soft or thermal dominant state and instead enters the steep power-law state at high luminosities. X-2 has the opposite behavior and appears to be in the hard state, with a photon index of Gamma=1.7-2.0 at high luminosity, but can soften to Gamma=2.5 at the lower luminosities.
description: 5 pages, 2 figures, submitted to ApJL on May 26th
Cluster-glass phase in pyrochlore XY antiferromagnets with quenched disorder
Creators: name: Andrade, Eric C.
name: Hoyos, José A.
name: Rachel, Stephan
name: Vojta, Matthias
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the impact of quenched disorder (random exchange couplings or site dilution) on easy-plane pyrochlore antiferromagnets. In the clean system, order-by-disorder selects a magnetically ordered state from a classically degenerate manifold. In the presence of randomness, however, different orders can be chosen locally depending on details of the disorder configuration. Using a combination of analytical considerations and classical Monte-Carlo simulations, we argue that any long-range-ordered magnetic state is destroyed beyond a critical level of randomness where the system breaks into magnetic domains due to random exchange anisotropies, becoming, therefore, a glass of spin clusters, in accordance with the available experimental data. These random anisotropies originate from off-diagonal exchange couplings in the microscopic Hamiltonian, establishing their relevance to other magnets with strong spin-orbit coupling.
description: 6 pages, 2 figures. Supplemental Material: 6 pages, 5 figures. Published version
Liparia splendens Bos & de Wit 1967
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Liparia
Liparia splendens

description: Liparia sphaerica Linnaeus, Mantissa Plantarum Altera: 268. 1771.
"Habitat ad Cap. b. Spei." RCN: 5431.
 Neotype (Schutte & Van Wyk in Jarvis & al., Regnum Veg. 127: 62. 1993): Herb. Linn. No. 910.1 (LINN).
 Generitype of Liparia Linnaeus (vide Hutchinson, Gen. Fl. Pl 1: 367. 1964).
 Current name: Liparia splendens (Burm. f.) Bos & de Wit (Fabaceae: Faboideae).
 Note: Bos (in J. S. African Bot. 33: 270, 281. 1967) noted that two sheets in LINN (910.1, 910.2) were annotated only by Linnaeus filius and post-date the publication of the name. Schutte & Van Wyk subsequently designated one of these sheets as a neotype.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part L), pp. 610-650 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on pages 635-636, DOI: 10.5281/zenodo.291971
Prospects for Pentaquark Searches in $e^+e^-$ Annihilations and $γγ$ Collisions
Creators: name: Armstrong, S.
name: Mellado, B.
name: Wu, Sau Lan
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent strong experimental evidence of a narrow exotic S = +1 baryon resonance, $Θ^+$, suggests the existence of other exotic baryons. We discuss the prospects of confirming earlier experimental evidence of $Θ^+$ and the observation of additional hypothetical exotic baryons in $e^+e^-$ annihilations and $γγ$ collisions at LEP and B Factories.
Smartphone Loneliness
Creators: name: Politz, Roman
name: Walz, Pauline
name: Pärssinen, Emil
name: Hartmann, Manuel
name: Zygar-Hoffmann, Caroline
name: Pflaum, Peter
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Social and Behavioral Sciences

description: Preregistration of a study conducted in the context of the lecture "Empirisch wissenschaftliches Arbeiten" at the Charlotte Fresenius Hochschule München.
Harmonic coordinates on fractals with finitely ramified cell structure
Creators: name: Teplyaev, Alexander
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 28A80, 31C25, 53B99, 58J65, 60J60, 60G18

description: We define sets with finitely ramified cell structure, which are generalizations of p.c.f. self-similar sets introduced by Kigami and of fractafolds introduced by Strichartz. In general, we do not assume even local self-similarity, and allow countably many cells connected at each junction point. We prove that if Kigami's resistance form satisfies certain assumptions, then there exists a weak Riemannian metric such that the energy can be expressed as the integral of the norm squared of a weak gradient with respect to an energy measure. Furthermore, we prove that if such a set can be homeomorphically represented in harmonic coordinates, then for smooth functions the weak gradient can be replaced by the usual gradient. We also prove a simple formula for the energy measure Laplacian in harmonic coordinates.
description: a better version of pictures can be found here: http://www.math.uconn.edu/~teplyaev/research/arxiv0506261.pdf
NeuroElectro: a window to the world's neuron electrophysiology data.
Creators: name: Shreejoy J. Tripathy
name: Savitskaya, Judith
name: Burton, Shawn D.
name: Urban, Nathan
name: Gerkin, Richard C.
Publisher: name: Carnegie Mellon University
Year: 2014
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: The behavior of neural circuits is determined largely by the electrophysiological properties of the neurons they contain. Understanding the relationships of these properties requires the ability to first identify and catalog each property. However, information about such properties is largely locked away in decades of closed-access journal articles with heterogeneous conventions for reporting results, making it difficult to utilize the underlying data. We solve this problem through the NeuroElectro project: a Python library, RESTful API, and web application (at http://neuroelectro.org) for the extraction, visualization, and summarization of published data on neurons' electrophysiological properties. Information is organized both by neuron type (using neuron definitions provided by NeuroLex) and by electrophysiological property (using a newly developed ontology). We describe the techniques and challenges associated with the automated extraction of tabular electrophysiological data and methodological metadata from journal articles. We further discuss strategies for how to best combine, normalize and organize data across these heterogeneous sources. NeuroElectro is a valuable resource for experimental physiologists attempting to supplement their own data, for computational modelers looking to constrain their model parameters, and for theoreticians searching for undiscovered relationships among neurons and their properties.
Homological properties of color Lie superalgebras
Creators: name: Price, Kenneth L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B55 (16S30 17B35 17B70)

description: Let $\mathcal{L}=\mathcal{L}_{+}\oplus \mathcal{L}_{-}$ be a finite dimensional color Lie superalgebra over a field of characteristic 0 with universal enveloping algebra $U(\mathcal{L})$. We show that $\limfunc{gldim}(U(\mathcal{L}_{+}))= \limfunc{lFPD}(U(\mathcal{L}))= \limfunc{rFPD}(U(\mathcal{L}))= \limfunc{injdim}_{U(\mathcal{L})}(U(\mathcal{L}))= \dim (\mathcal{L}_{+})$. We also prove that $U(\mathcal{L})$ is Auslander-Gorenstein and Cohen-Macaulay and thus that it has a QF classical quotient ring.
description: This 7-page article appeared in a conference proceedings which is now out of print
Network-based inference of cancer progression from microarray data.
Creators: name: Yongjin  Park
name: Shackney, Stanley E.
name: Schwartz, Russell
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Cancer cells exhibit a common phenotype of uncontrolled cell growth, but this phenotype may arise from many different combinations of mutations. By inferring how cells evolve in individual tumors, a process called cancer progression, we may be able to identify important mutational events for different tumor types, potentially leading to new therapeutics and diagnostics. Prior work has shown that it is possible to infer frequent progression pathways by using gene expression profiles to estimate "distances" between tumors. Here, we apply gene network models to improve these estimates of evolutionary distance by controlling for correlations among coregulated genes. We test three variants of this approach: one using an optimized best-fit network, another using sampling to infer a high-confidence subnetwork, and one using a modular network inferred from clusters of similarly expressed genes. Application to lung cancer and breast cancer microarray data sets shows small improvements in phylogenies when correcting from the optimized network and more substantial improvements when correcting from the sampled or modular networks. Our results suggest that a network correction approach improves estimates of tumor similarity, but sophisticated network models are needed to control for the large hypothesis space and sparse data currently available.
A Review of the 0.1 Reconnection Rate Problem
Creators: name: Cassak, P. A.
name: Liu, Y. -H.
name: Shay, M. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: A long-standing problem in magnetic reconnection is to explain why it tends to proceed at or below a normalized rate of 0.1. This article gives a review of observational and numerical evidence for this rate and discusses recent theoretical work addressing this problem. Some remaining open questions are summarized.
description: 16 pages, 4 figures, the manuscript was prepared for the first Journal of Plasma Physics Frontiers in Plasma Physics Conference, accepted to Journal of Plasma Physics, August 2017
title: ADCO, Cartulaire de Fontenay, second fragment (XIIIe siècle), Cart. 201 (15 H 9), folios 47-142, f. 047v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142. Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142, f. 047v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb119679755
description: Provenance: abbaye de Fontenay
description: Provenance: https://www.geonames.org/7874015
description: Provenance: http://www.wikidata.org/entity/Q464918
description: Provenance: http://www.idref.fr/027691802/id
Negative feedback regulation among SR splicing factors encoded by Rbp1 and Rbp1-like in Drosophila.
Creators: name: Supriya  Kumar
name: Antonio-Javier Lopez
Publisher: name: Carnegie Mellon University
Year: 2005
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: SR proteins constitute a widely conserved family of splicing regulators. Negative autoregulation of SR proteins has been proposed to exert homeostatic control on the splicing environment, but few examples have been studied and the role of isoforms that lack the RS domain is unclear. We show that genes Rbp1 and Rbp1-like, which encode Drosophila homologs of mammalian SRp20, negatively autoregulate and crossregulate at the level of alternative 3' splice site selection. This adjusts the relative expression of isoforms with either an RS domain or unrelated C-terminal domains (ALT) that are rich in serine and threonine. The effects of RBP1-ALT on splicing of doublesex and Rbp1-like are opposite to those of RBP1-RS and RBP1L-RS. RBP1-ALT and -RS exert opposing negative feedback on the ALT/RS ratio. However, RBP1-ALT inhibits the expression of RBP1-RS while stimulating that of RBP1L-RS. This asymmetry may contribute to changes in the RBP1-RS/RBP1L-RS ratio that are observed during development. These results provide the first example of a feedback-regulated SR protein network with evidence of an active homeostatic role for alternative isoforms.
Spin Exchange Rates in Electron-Hydrogen Collisions
Creators: name: Furlanetto, Steven
name: Furlanetto, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The spin temperature of neutral hydrogen, which determines the 21 cm optical depth and brightness temperature, is set by the competition between radiative and collisional processes. In the high-redshift intergalactic medium, the dominant collisions are typically those between hydrogen atoms. However, collisions with electrons couple much more efficiently to the spin state of hydrogen than do collisions with other hydrogen atoms and thus become important once the ionized fraction exceeds ~1%. Here we compute the rate at which electron-hydrogen collisions change the hydrogen spin. Previous calculations included only S-wave scattering and ignored resonances near the n=2 threshold. We provide accurate results, including all partial wave terms through the F-wave, for the de-excitation rate at temperatures T_K < 15,000 K; beyond that point, excitation to n>=2 hydrogen levels becomes significant. Accurate electron-hydrogen collision rates at higher temperatures are not necessary, because collisional excitation in this regime inevitably produces Lyman-alpha photons, which in turn dominate spin exchange when T_K > 6200 K even in the absence of radiative sources. Our rates differ from previous calculations by several percent over the temperature range of interest. We also consider some simple astrophysical examples where our spin de-excitation rates are useful.
description: submitted to MNRAS, 9 pages, 5 figures
On a lower bound for the Laplacian eigenvalues of a graph
Creators: name: Greaves, Gary R. W.
name: Munemasa, Akihiro
name: Peng, Anni
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C50

description: If $μ_m$ and $d_m$ denote, respectively, the $m$-th largest Laplacian eigenvalue and the $m$-th largest vertex degree of a graph, then $μ_m \geqslant d_m-m+2$. This inequality was conjectured by Guo in 2007 and proved by Brouwer and Haemers in 2008. Brouwer and Haemers gave several examples of graphs achieving equality, but a complete characterisation was not given. In this paper we consider the problem of characterising graphs satisfying $μ_m = d_m-m+2$. In particular we give a full classification of graphs with $μ_m = d_m-m+2 \leqslant 1$.
description: corrected typo
Liparia laevigata Thunb.
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Liparia
Liparia laevigata

description: Liparia umbellata Linnaeus, Mantissa Plantarum Altera: 269. 1771.
RCN: 5182.
Type not designated.
Original material: none traced.
 Current name: Liparia laevigata (L.) Thunb. (Fabaceae: Faboideae).
 Note: Linnaeus gave the alternative name Borbonia umbellata (seemingly not published elsewhere) in the protologue, and this was repeated in Syst. Veg., ed. 13: 554 (1774). Neither this name nor B. umbellata is invalid, having been published pre-1953 (Art. 34.2). Dahlgren (in Opera Bot. 22: 101. 1968), however, treated it as invalid ("should not be considered from the point of view of nomenclature"), and Schutte & Van Wyk (in Taxon 43: 579. 1994) and Schutte (in Nordic J. Bot. 17: 29. 1997) treat this as an illegitimate name, synonymous with Liparia laevigata (L.) Thunb.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part L), pp. 610-650 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 636, DOI: 10.5281/zenodo.291971
Impurity-assisted electric control of spin-valley qubits in monolayer MoS$_2$
Creators: name: Széchenyi, G.
name: Chirolli, L.
name: Pályi, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically study a single-electron spin-valley qubit in an electrostatically defined quantum dot in a transition metal dichalcogenide monolayer, focusing on the example of MoS$_2$. Coupling of the qubit basis states for coherent control is challenging, as it requires a simultaneous flip of spin and valley. Here, we show that a tilted magnetic field together with a short-range impurity, such as a vacancy, a substitutional defect, or an adatom, can give rise to a coupling between the qubit basis states. This mechanism renders the in-plane $g$-factor nonzero, and allows to control the qubit with an in-plane ac electric field, akin to electrically driven spin resonance. We evaluate the dependence of the in-plane $g$-factor and the electrically induced qubit Rabi frequency on the type and position of the impurity. We reveal highly unconventional features of the coupling mechanism, arising from symmetry-forbidden intervalley scattering, in the case when the impurity is located at a S site. Our results provide design guidelines for electrically controllable qubits in two-dimensional semiconductors.
description: 12 pages, 3 figures