cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
XMM-Newton observations of the Galactic globular clusters NGC 2808 and NGC 4372
Creators: name: Servillat, M.
name: Webb, N. A.
name: Barret, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Galactic globular clusters harbour binary systems that are detected as faint X-ray sources. These close binaries are thought to play an important role in the stability of the clusters by liberating energy and delaying the inevitable core collapse of globular clusters. The inventory of close binaries and their identification is therefore essential. We present XMM-Newton observations of two Galactic globular clusters: NGC 2808 and NGC 4372. We use X-ray spectral and variability analysis combined with ultra-violet observations made with the XMM-Newton optical monitor and published data from the Hubble Space Telescope to identify sources associated with the clusters. We compare the results of our observations with estimates from population synthesis models. Five sources out of 96 are likely to be related to NGC 2808. Nine sources are found in the field of view of NGC 4372, none being located inside its half-mass radius. We find one quiescent neutron star low mass X-ray binary candidate in the core of NGC 2808, and propose that the majority of the central sources in NGC 2808 are cataclysmic variables. An estimation leads to ~20+/-10 cataclysmic variables with luminosity above 4.25 x 10^31 erg s^-1. Millisecond pulsars could also be present in the core of NGC 2808, and some sources outside of the half-mass radius could possibly be linked to the cluster.
description: 11 pages, 3 pages of online material, 10 figures and 9 tables. Accepted for publication in A&A
Data-Driven Geometric Scene Understanding
Creators: name: Satkin, Scott
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: In this thesis, we describe a data-driven approach to leverage repositories of 3D models for scene understanding. Our ability to relate what we see in an image to a large collection of 3D models allows us to transfer information from these models, creating a rich understanding of the scene. We develop a framework for auto-calibrating a camera, rendering 3D models from the viewpoint an image was taken, and computing a similarity measure between each 3D model and an input image. We demonstrate this data-driven approach in the context of geometry estimation and show the ability to find the identities, poses and styles of objects in a scene. We begin by presenting a proof-of-concept algorithm for matching 3D models with input images. Next, we present a series of extensions to this baseline approach. Our goals here are three-fold. First, we aim to produce more accurate reconstructions of a scene by determining both the exact style and size of objects as well as precisely localizing their positions. In addition, we aim to increase the robustness of our scene-matching approach by incorporating new features and expanding our search space to include many viewpoint hypotheses. Lastly, we address the computational challenges of our approach by presenting algorithms for more efficiently exploring the space of 3D scene hypotheses, without sacrificing the quality of results. We conclude by presenting various applications of our geometric scene understanding approach. We start by demonstrating the effectiveness of our algorithm for traditional applications such as object detection and segmentation. In addition, we present two novel applications incorporating our geometry estimates: affordance estimation and geometryaware object insertion for photorealistic rendering.
Data-Driven Approaches for Track Monitoring Using In-Service Trains
Creators: name: Lederman, George
Publisher: name: Carnegie Mellon University
Year: 2016
Subjects: subject: 90799 Environmental Engineering not elsewhere classified
subject: FOS: Environmental engineering
subject: 90599 Civil Engineering not elsewhere classified
subject: FOS: Civil engineering

description: This thesis explores data-driven approaches for monitoring rail-infrastructure from the dynamic response of a train in revenue-service. Presently, track inspection is performed either visually or with dedicated track geometry cars. Collecting and analyzing vibration data from in-service trains can offer more economical and more reliable monitoring. The high frequency with which in-service trains travel each section of track means that faults can be detected sooner than with dedicated inspection vehicles, and the large number of passes over each section of track makes a data-driven approach statistically feasible. Developing such a data-driven approach requires modeling the state of the tracks from the collected data, then detecting track anomalies as the model changes over time. Building consistent models from different passes is challenging due to the variation in the train’s speed from pass to pass, the uncertainty in the train’s position, and changes in the properties of the train itself. We study two ways of modeling the state of the tracks to address these challenges: explicit models where the track profile itself is estimated, and implicit models, where features extracted from the collected data are used to imply information about the tracks. In addition, we explore change detection methods appropriate for both modeling approaches; these would allow for monitoring to occur without human supervision. Finally, for network-level monitoring to be practical, we study how data from multiple sensors and multiple trains could be fused together. Data fusion could enable more accurate representations of the state of the tracks, and more rapid detection of track changes after they occur. The track modeling, change detection and data fusion approaches presented in this thesis are validated with simulations and with data collected from two instrumented trains. This collected data includes more than 500 passes through a 40km rail network over a three year period. We demonstrate that the proposed sensing, signal processing, and data analysis can detect numerous types of track anomalies and could facilitate safer, more efficient rail-infrastructure in the future.
Free Boson Representation of $q$-Vertex Operators and their Correlation Functions
Creators: name: Kato, Akishi
name: Quano, Yas-Hiro
name: Shiraishi, Jun'ichi
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A bosonization scheme of the $q$-vertex operators of $\uqa$ for arbitrary level is obtained. They act as intertwiners among the highest weight modules constructed in a bosonic Fock space. An integral formula is proposed for $N$-point functions and explicit calculation for two-point function is presented.
description: 22 pages, latex file, UT-618 (revised version)
Automation and human curation to enable the preservation, linking, and discovery of research and scholarship
Creators: name: Coughlin, Daniel
name: Woods, Scott
name: Tribone, Michael
name: Vitale, Cynthia
Publisher: name: Zenodo
Year: 2019
Subjects: Automation
human curation
open access
populating an institutional repository

description: Methods, tools, and workflows for discovering, linking, and preserving open access scholarship and research are critical infrastructure for open repositories. With many distributed aggregators of scholarship and research in the University ecosystem, such as Unpaywall, PURE, ETD's, and others, discovery of this content is not difficult. What is more of a challenge are the local workflows required to integrate these resources into the repository infrastructure. To address this need, the Penn State University Libraries developed a human curated and automation pipeline to discover, claim, and link distributed scholarship. Processes were then created to ingest and preserve these assets within our institutional repository. As a case study for this process, we will be discussing our approach to integrating metadata and open access articles into our repository and linking the articles to distributed data and other related resources.
A Detailed Study of 2S 0114+650 with the RXTE
Creators: name: Farrell, S. A.
name: Sood, R. K.
name: O'Neill, P. M.
name: Dieters, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a detailed study of the high mass X-ray binary 2S 0114+650 made with the pointed instruments onboard the Rossi X-ray Timing Explorer. The spectral and temporal behaviour of this source was examined over the pulse, orbital, and super-orbital timescales, covering $\sim$2 cycles of the 30.7 d super-orbital modulation. Marginal evidence for variability of the power law photon index over the pulse period was identified, similar to that observed from other X-ray pulsars. If this variability is real it can be attributed to a varying viewing geometry of the accretion region with the spin of the neutron star. Variability of the neutral hydrogen column density over the orbital period was observed, which we attribute to the line of sight motion of the neutron star through the dense circumstellar environment. A reduction in the power law photon index was observed during the orbital maximum, which we speculate is due to absorption effects as the neutron star passes behind a heavily absorbing region near the base of the supergiant companion's wind. No significant variability of the column density was observed over the super-orbital period, indicating that variable obscuration by a precessing warp in an accretion disc is not the mechanism behind the super-orbital modulation. In contrast, a significant increase in the power law photon index was observed during the super-orbital minimum. We conclude that the observed super-orbital modulation is tied to variability in the mass accretion rate due to some as yet unidentified mechanism.
description: 22 pages, 27 figures, accepted for publication in MNRAS after moderate revision
$K_L \ra μ^\pm e^\mp ν\overlineν$ as background to $K_L \ra μ^\pm e^\mp$
Creators: name: Dawson, S.
name: Valencia, G.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the process $K_L \ra μ^\pm e^\mp ν\overlineν$ at next to leading order in chiral perturbation theory. This process occurs in the standard model at second order in the weak interaction and constitutes a potential background in searches for new physics through the modes $K_L \ra μ^\pm e^\mp$. We find that the same cut, $M_{μe}>489$~MeV, used to remove the sequential decays $K_{l3}\ra π_{l2}$ pushes the $B(K_L \ra μ^\pm e^\mp ν\overlineν)$ to the $10^{-23}$ level, effectively removing it as a background.
description: 8 pages, LaTeX, 1 figure appended as postscript file after \end{document}. Fermilab-Pub-93/024-T
Die Fossiliensammlung von Wilhelm Bechter
Creators: name: Dietl, Gerd
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2007

description: Im Jahre 2005 stiftete Frau Dr. med. Lotte Wilsch geb. Bechter, Uttenreuth bei Erlangen, die bekannte Fossiliensammlung ihres Großvaters und Vaters dem Staatlichen Museum für Naturkunde in Stuttgart. Die Sammlung galt auch unter Insidern schon längere Zeit als verschollen. Sie tat dies in der Überzeugung, dass diese Sammlung an dieser Institution besonders gut aufgehoben sei und dort außerdem der Forschung zur Verfügung stehen wird.
description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 163 (2007): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 163. Jahrgang
Die Dentalienton-Formation (bt) des Schwäbischen Juras – Beschreibung und Gliederung
Creators: name: Dietl, Gerd
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2007

description: Es wird ausführlich die neu eingeführte lithostratigraphische Einheit Dentalienton-Formation (Mittel-Jura, überwiegend Unter-Bathonium) des Schwäbischen Juras erläutert. Ihre fazielle Entwicklung von Mittel-Württemberg bis in das Wutach-Gebiet wird dargestellt. Sie wird nur in wenige Untereinheiten gegliedert: Dentalienton-Subformation, Fuscusbank, „Knorriton“, Chondritenmergel. Ihre Mächtigkeitsentwicklung, Altersstellung und Fossilführung wird aufgeführt.
description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 163 (2007): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 163. Jahrgang
Cutting and shuffling with diffusion: Evidence for cut-offs in interval exchange maps
Creators: name: Wang, Mengying
name: Christov, Ivan C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Low-dimensional dynamical systems are fruitful models for mixing in fluid and granular flows. We study a one-dimensional discontinuous dynamical system (termed "cutting and shuffling" of a line segment), and we present a comprehensive computational study of its finite-time mixing properties including the effect of diffusion. To explore a large parameter space, we introduce fit functions for two mixing metrics of choice: the number of cutting interfaces (a standard quantity in dynamical systems theory of interval exchange transformations) and a mixing norm (a more physical measure of mixing). We compute averages of the mixing metrics across different permutations (shuffling protocols), showing that the latter averages are a robust descriptor of mixing for any permutation choice. If the decay of the normalized mixing norm is plotted against the number of map iterations rescaled by the characteristic e-folding time, then universality emerges: mixing norm decay curves across all cutting and shuffling protocols collapse onto a single stretched-exponential profile. Next, we predict this critical number of iterations using the average length of unmixed subsegments of continuous color during cutting and shuffling and a Batchelor-scale-type diffusion argument. This prediction, called a "stopping time" for finite Markov chains, compares well with the e-folding time of the stretched-exponential fit. Finally, we quantify the effect of diffusion on cutting and shuffling through a Péclet number (a dimensionless inverse diffusivity), showing that the system transitions more sharply from an unmixed initial state to a mixed final state as the Péclet number becomes large. Our numerical investigation of cutting and shuffling of a line segment in the presence of diffusion thus present evidence for the latter phenomenon, known as a "cut-off" for finite Markov chains, in interval exchange maps.
description: 15 pages, 13 figures, REVTeX 4-1 class; v2: minor revisions; v3: title changed to conform to PRE style
Bericht der Gesellschaft für Naturkunde in Württemberg 2006
Creators: name: Schriftleitung Der Gesellschaft Für Naturkunde In Württemberg
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2006

description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 162 (2006): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 162. Jahrgang
Quantization of Dyon Charge and Electric-Magnetic Duality in String Theory
Creators: name: Sen, Ashoke
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the allowed spectrum of electric and magnetic charges carried by dyons in (toroidally compactified) heterotic string theory in four dimensions at arbitrary values of the string coupling constant and $θ$ angle. The spectrum is shown to be invariant under electric-magnetic duality transformation, thereby providing support to the conjecture that this is an exact symmetry in string theory.
description: 8 pages, phyzzx.tex, TIFR-TH-92-46
Bericht der Gesellschaft für Naturkunde in Württemberg - Außerordentliche Mitgliederversammlung am 24.05.2006
Creators: name: Jahreshefte, Schriftleitung
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2006

description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 162 (2006): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 162. Jahrgang
Dimensionality of spacetime as a gauge-invariance parameter in Yang-Mills calculations
Creators: name: Parwani, Rajesh R.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This is the revised version of an earlier paper with the same title.
description: Latex, 23 pages; preprint number SPhT/93-004 (Revised)
The geometry of supersymmetric coset models and superconformal algebras
Creators: name: Papadopoulos, G.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An on-shell formulation of (p,q), 2\leq p \leq 4, 0\leq q\leq 4, supersymmetric coset models with target space the group G and gauge group a subgroup H of G is given. It is shown that there is a correspondence between the number of supersymmetries of a coset model and the geometry of the coset space G/H. The algebras of currents of supersymmetric coset models are superconformal algebras. In particular, the algebras of currents of (2,2) and (4,0) supersymmetric coset models are related to the N=2 Kazama-Suzuki and N=4 Van Proeyen superconformal algebras correspondingly.
description: pages 22
Spectroscopy of strontium Rydberg states using electromagnetically induced transparency
Creators: name: Mauger, S.
name: Millen, J.
name: Jones, M. P. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on the all-optical detection of Rydberg states in a effusive atomic beam of strontium atoms using electromagnetically induced transparency (EIT). Using narrow-linewidth CW lasers we obtain an EIT linewidth of 5 MHz. To illustrate the high spectroscopic resolution offered by this method, we have measured isotope shifts of the 5s18d ^1D_2 and 5s19s ^1S_0 Rydberg states. This technique could be applied to high-resolution, non-destructive measurements of ultra-cold Rydberg gases and plasmas.
description: 8 pages, 4 figures
Additional file 2: of Gene identification and transcriptome analysis of low cadmium accumulation rice mutant (lcd1) in response to cadmium stress using MutMap and RNA-seq
Creators: name: Cao, Zhen
name: Lin, Xiao
name: Yang, Yong
name: Guan, Mei
name: Xu, Ping
name: Chen, Ming
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Table S2. The PCR amplification efficiency for each primer pair (DOCX 19 kb)
Cryptanalysis of an image encryption scheme based on the Hill cipher
Creators: name: Li, Chengqing
name: Zhang, Dan
name: Chen, Guanrong
Publisher: name: arXiv
Year: 2007
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This paper studies the security of an image encryption scheme based on the Hill cipher and reports its following problems: 1) there is a simple necessary and sufficient condition that makes a number of secret keys invalid; 2) it is insensitive to the change of the secret key; 3) it is insensitive to the change of the plain-image; 4) it can be broken with only one known/chosen-plaintext; 5) it has some other minor defects.
description: 10 pages, three figures
Bericht des Staatlichen Museums für Naturkunde Stuttgart 2005
Creators: name: Schriftleitung Der Gesellschaft Für Naturkunde In Württemberg
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2006

description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 162 (2006): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 162. Jahrgang
Top Near Threshold: All QCD Radiative Corrections are Trivial
Creators: name: Melnikov, K.
name: Yakovlev, O.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have calculated part of O($α_{S}$) QCD radiative correction to the total cross-section of top's threshold production in $ e^{+}e^{-} \to t\bar t \to W^{-} b W^{+} \bar b$ reaction. We found out a curious fact: there is no O($α_{S}$) correction to the total cross-section, originated from $b \bar b , t \bar b ,\bar t b $ gluon exchange and corresponding gluon emission. Thus, all O($α_{S}$) corrections which are non-zero, can be classified as: 1) corrections to $t \bar t$ nonrelativistic potential 2) corrections to the top's width 3) hard gluon correction to $γt \bar t$-vertex. These corrections are well-known and were described in the previous papers. We can conclude that similar situation takes place for all unstable particles threshold production. This result can be expressed in the form of a general statment: There is no O($α_{QED}$ or $α_{QCD}$) corrections for the total cross-section , originated from the "jet-jet" interection.
description: 7 pages , figures described but not included, available on request,
Nachruf Helmut Länge (1922–2005)
Creators: name: Kull, Ulrich
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2006

description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 162 (2006): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 162. Jahrgang
Data Mining Meets HCI: Making Sense of Large Graphs
Creators: name: Dueng Horng Chau
Publisher: name: Carnegie Mellon University
Year: 2012
Subjects: subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: We have entered the age of big data. Massive datasets are now common in science, government and enterprises. Yet, making sense of these data remains a fundamental challenge. Where do we start our analysis? Where to go next? How to visualize our findings? We answers these questions by bridging Data Mining and Human- Computer Interaction (HCI) to create tools for making sense of graphs with billions of nodes and edges, focusing on: (1) Attention Routing: we introduce this idea, based on anomaly detection, that automatically draws people’s attention to interesting areas of the graph to start their analyses. We present three examples: Polonium unearths malware from 37 billion machine-file relationships; NetProbe fingers bad guys who commit auction fraud. (2) Mixed-Initiative Sensemaking: we present two examples that combine machine inference and visualization to help users locate next areas of interest: Apolo guides users to explore large graphs by learning from few examples of user interest; Graphite finds interesting subgraphs, based on only fuzzy descriptions drawn graphically. (3) Scaling Up: we show how to enable interactive analytics of large graphs by leveraging Hadoop, staging of operations, and approximate computation. This thesis contributes to data mining, HCI, and importantly their intersection, including: interactive systems and algorithms that scale; theories that unify graph mining approaches; and paradigms that overcome fundamental challenges in visual analytics. Our work is making impact to academia and society: Polonium protects 120 million people worldwide from malware; NetProbe made headlines on CNN, WSJ and USA Today; Pegasus won an opensource software award; Apolo helps DARPA detect insider threats and prevent exfiltration. We hope our Big Data Mantra “Machine for Attention Routing, Human for Interaction” will inspire more innovations at the crossroad of data mining and HCI.
Perturbative unitarity and higher-order Lorentz symmetry breaking
Creators: name: Balart, Leonardo
name: Reyes, Carlos M.
name: Ossandon, Sebastian
name: Reyes, Camilo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study perturbative unitarity in the scalar sector of the Myers-Pospelov model. The model introduces a preferred four-vector $n$ which breaks Lorentz symmetry and couples to a five-dimension operator. When the preferred four-vector is chosen in the pure timelike or lightlike direction, the model becomes a higher time derivative theory, leading to a cubic dispersion relation. Two of the poles are shown to be perturbatively connected to the standard ones, while a third pole, which we call the Lee-Wick-like pole, is associated to a negative metric, in Hilbert space, threatening the preservation of unitarity. The pure spacelike case is a normal theory in the sense that it has only two solutions both being small perturbations over the standard ones. We analyze perturbative unitarity for purely spacelike and timelike cases using the optical theorem and considering a quartic self-interaction term. By computing discontinuities in the loop diagram, we arrive at a pinching condition which determines the propagation of particles and Lee-Wick-like particles through the cut. We find that the contribution for Lee-Wick-like particles vanishes for any external momenta, leaving only the contribution of particles, thus preserving one-loop unitarity in both cases.
description: New version with concordant frame analysis. Accepted in PRD. 12 pages, 4 figures
Data Analytics Methods for Enterprise-wide Optimization Under Uncertainty
Creators: name: Calfa, Bruno Abreu
Publisher: name: Carnegie Mellon University
Year: 2015
Subjects: subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering

description: This dissertation primarily proposes data-driven methods to handle uncertainty in problems related to Enterprise-wide Optimization (EWO). Datadriven methods are characterized by the direct use of data (historical and/or forecast) in the construction of models for the uncertain parameters that naturally arise from real-world applications. Such uncertainty models are then incorporated into the optimization model describing the operations of an enterprise. Before addressing uncertainty in EWO problems, Chapter 2 deals with the integration of deterministic planning and scheduling operations of a network of batch plants. The main contributions of this chapter include the modeling of sequence-dependent changeovers across time periods for a unitspecific general precedence scheduling formulation, the hybrid decomposition scheme using Bilevel and Temporal Lagrangean Decomposition approaches, and the solution of subproblems in parallel. Chapters 3 to 6 propose different data analytics techniques to account for stochasticity in EWO problems. Chapter 3 deals with scenario generation via statistical property matching in the context of stochastic programming. A distribution matching problem is proposed that addresses the under-specification shortcoming of the originally proposed moment matching method. Chapter 4 deals with data-driven individual and joint chance constraints with right-hand side uncertainty. The distributions are estimated with kernel smoothing and are considered to be in a confidence set, which is also considered to contain the true, unknown distributions. The chapter proposes the calculation of the size of the confidence set based on the standard errors estimated from the smoothing process. Chapter 5 proposes the use of quantile regression to model production variability in the context of Sales & Operations Planning. The approach relies on available historical data of actual vs. planned production rates from which the deviation from plan is defined and considered a random variable. Chapter 6 addresses the combined optimal procurement contract selection and pricing problems. Different price-response models, linear and nonlinear, are considered in the latter problem. Results show that setting selling prices in the presence of uncertainty leads to the use of different purchasing contracts.
Additional file 3: of Gene identification and transcriptome analysis of low cadmium accumulation rice mutant (lcd1) in response to cadmium stress using MutMap and RNA-seq
Creators: name: Cao, Zhen
name: Lin, Xiao
name: Yang, Yong
name: Guan, Mei
name: Xu, Ping
name: Chen, Ming
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Table S3. Comparison of the main agronomic traits between lcd1 and WT plants (DOCX 15 kb)
Phase diagram and metastability of the Ising model on two coupled networks
Creators: name: Bolfe, Maíra
name: Nicolao, Lucas
name: Metz, Fernando L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We explore the cooperative behaviour and phase transitions of interacting networks by studying a simplified model consisting of Ising spins placed on the nodes of two coupled Erdös-Rényi random graphs. We derive analytical expressions for the free-energy of the system and the magnetization of each graph, from which the phase diagrams, the stability of the different states, and the nature of the transitions among them, are clearly characterized. We show that a metastable state appears discontinuously by varying the model parameters, yielding a region in the phase diagram where two solutions coexist. By performing Monte-Carlo simulations, we confirm the exactness of our main theoretical results and show that the typical time the system needs to escape from a metastable state grows exponentially fast as a function of the temperature, characterizing ergodicity breaking in the thermodynamic limit.
description: 17 pages, 5 figures
Growth rates of the Weibel and tearing mode instabilities in a relativistic pair plasma
Creators: name: Pétri, J.
name: Kirk, J. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an algorithm for solving the linear dispersion relation in an inhomogeneous, magnetised, relativistic plasma. The method is a generalisation of a previously reported algorithm that was limited to the homogeneous case. The extension involves projecting the spatial dependence of the perturbations onto a set of basis functions that satisfy the boundary conditions (spectral Galerkin method). To test this algorithm in the homogeneous case, we derive an analytical expression for the growth rate of the Weibel instability for a relativistic Maxwellian distribution and compare it with the numerical results. In the inhomogeneous case, we present solutions of the dispersion relation for the relativistic tearing mode, making no assumption about the thickness of the current sheet, and check the numerical method against the analytical expression.
description: Accepted by PPCF
Data Analysis of Rayleigh-Taylor Unstable Flows
Creators: name: Swisher, Nora
Publisher: name: Carnegie Mellon University
Year: 2016
Subjects: subject: 20399 Classical Physics not elsewhere classified
subject: FOS: Physical sciences

description: Rayleigh-Taylor and Richtmyer-Meshkov instabilities (RTI and RMI) occur when afluid interface between fluids of different densities is accelerated against the density gradient. RTI/RMI plays an important role in the dynamics of fluids and plasmas on microscopic scales, such as inertial confinement fusion, through astronomical scales, such as supernova explosions. These problems have been studied for decades, yet it remains a challenge to observe, model, and describe RTI/RMI mathematically. Without the tools used to analyze stable equilibrium, we must find more robust analyses. This work uses robust data analysis techniques to systematically study RT unstable flows. We report a thorough analysis of experimental data in supernova experiments conducted at high powered laser facilities, evaluating what information experiments and simulations may tell us about the fundamentals of RTI and RT mixing in high energy density plasmas by comparing the data with rigorous theoretical approaches. We investigate the statistically unsteadiness of RT mixing by numerically modeling the set of stochastic nonlinear differential equations which govern the rate of change of momentum in a packet of fluid undergoing RT instability. By analyzing the modeled solutions, we measure the influence of fluctuations on measurable quantities, find new characteristic values which may be used as to diagnose the regime of an experiment or simulation, and measure the spectra of fluctuations as they propagate throughout the system. We study the effect of the initial perturbation amplitude on the RMI interfacial dynamics using Single Particle Hydrodynamics simulations. The compound motion of the interface and bulk fluid ow is measured, an empirical model is found to describe data, and we find an upper bound for the amount of energy deposited to the interface. There exists a plethora of data that may still be analyzed systematically, as exemplified in this thesis. Future work may improve the fits of experimental data by exploring well designed parameter spaces, model additional stochastic effects, and measure small scale features of ow quantities in simulations.
CENTRALIZING OR SHARING THE DIGITAL COMMUNITY CURRENCIES GOVERNANCES? PROPOSING WAYS OF THINKING DCCS FROM THE MUMBUCA CASE
Creators: name: Luiz Arthur Silva De Faria
name: Ribeiro, Bruno Chapadeiro
name: Cukierman, Henrique L.
name: Diniz, Eduardo H.
Publisher: name: International Journal of Community Currency Research (IJCCR)
Year: 2022
Subjects: Community development banks
community currencies
digital currencies
governance
solidarity economy

description: This work deals with the implications of different ways of digitalizing social or community currencies(CCs) in Brazil. It starts from the following tension, verbalized by representatives of Brazilian Com-munity Development Banks (CDBs): on the one hand, the digitalization of CCs would maintain “thesame idea, [only] in different ways”; on the other hand, its governance would be nowadays “the mostcomplex issue”. The investigation examines this tension in Mumbuca Digital CC (DCC) case (Maricá,state of Rio de Janeiro), one of the greatest world’s DCC experiences (considering the number of fi-nancial resources involved) and part of the Brazilian CDBs Network - which has brought togetheraround 150 experiences since 1998. We collected data from 2015 to 2021, from semi-structured in-terviews, fieldnotes from an ethnographic research approach, and the Mumbuca DCC system admin-istrative interface as well. The article advances in understanding DCCs: besides demonstrating thattheir materialities are inseparable from the “social arrangements” around them, it adds new ele-ments to previous researches, proposing an analysis framework for different sociotechnical govern-ance dimensions of DCC (GDs). Precisely, using tools and concepts from Actor Network Theory (suchas translation, symmetry, networks, sociogram and technogram), we begin describing moments ofMumbuca DCC, each one corresponding to different versions of CDBs principles and to different so-ciotechnical governance configurations. Finally, we present a framework that brings together newDCC governance dimensions (like “management” dimension and “economic appropriations” in-volved) dialoguing with previous investigations GDs (“requirements”, “data” and “source code” of aDCC), and classifying each one as “Centralized” (meaning strong state / private company presence)or “Shared” (strong self-management / community approach).
Non-oblique Correction in Extenden Technicolor Theory
Creators: name: Kitazawa, N.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study radiative corrections on $Zb{\bar b}$ vertex generated by the ETC gauge bosons, ``diagonal'' as well as sideways. Although the oblique corrections due to the ETC bosons are small in comparison with the oblique correction due to the technicolor dynamics, the non-oblique corrections result in substantial shift of contour plot in the $S$-$T$ plane. We show that such a shift due to the non-oblique corrections is actually important for discussing $S$ and $T$ values in the technicolor models.
description: REVTEX, 11 pages, 3 figures (not included), DPNU-92-47
Laurent Series Representation for the Open Superstring Free Energy
Creators: name: Bytsenko, A. A.
name: Elizalde, E.
name: Zerbini, S. D. Odintsov nd S.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Open superstrings at non-zero temperature are considered. A novel representation for the free energy (Laurent series representation) is constructed. It is shown that the Hagedorn temperature arises in this formalism as the convergence condition (specifically, the radius of convergence) of the Laurent series.
description: Latex, 10 Pages
Quasiparticle evolution and pseudogap formation in V2O3: An infrared spectroscopy study
Creators: name: Baldassarre, L.
name: Perucchi, A.
name: Nicoletti, D.
name: Toschi, A.
name: Sangiovanni, G.
name: Held, K.
name: Capone, M.
name: Ortolani, M.
name: Malavasi, L.
name: Marsi, M.
name: Metcalf, P.
name: Postorino, P.
name: Lupi, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The infrared conductivity of V2O3 is measured in the whole phase diagram. Quasiparticles appear above the Neel temperature TN and eventually disappear further enhancing the temperature, leading to a pseudogap in the optical spectrum above 425 K. Our calculations demonstrate that this loss of coherence can be explained only if the temperature dependence of lattice parameters is considered. V2O3 is therefore effectively driven from the metallic to the insulating side of the Mott transition as the temperature is increased.
description: 5 pages, 3 figures
Ionization of the hydrogen atom by intense ultrashort laser pulses
Creators: name: Borbély, S.
name: Tőkési, K.
name: Nagy, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The ionization of atomic hydrogen in intense laser fields is studied theoretically. The calculations were performed applying both quantummechanical and classical approaches. Treating the problem quantummechanically, the time dependent Schrödinger equation (TDSE) of our system was first transformed into a pseudo-momentum space and solved in this space iteratively. While neglecting the Coulomb potential during the solution of the TDSE we got the results in the Volkov approximation, in the first order solution we taken into account the Coulomb potential as perturbation. The classical calculations were performed within the framework of the classical trajectory Monte-Carlo (CTMC) method. The double differential ionization probabilities are calculated for different laser pulses and a reasonable agreement was found between the theories. Major differences can be observed in the angular distribution of electrons at low electron energies between classical and the quantummechanical approaches. At high electron energies the differences disappear, which indicates that the generation of low energy electrons is of quantum type, and it is strongly influenced by the Coulomb potential, while the production of high energy electrons is of classical type and it is less influenced by the Coulomb interaction. Our results are also compared with the Coulomb-Volkov (CV) model calculations.
description: submited to PRA
Cybersecurity Challenges in Developing Nations
Creators: name: Tagert, Adam C.
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: 160510 Public Policy
subject: FOS: Political science
subject: 99999 Engineering not elsewhere classified
subject: FOS: Other engineering and technologies

description: This thesis examines the guidance that is being given to developing nations that are rapidly deploying information and communication technologies. It studied the African countries of Rwanda and Tunisia to draw lessons of the situation and potential methods of improving the situation. The thesis found that developing nations are often recommended to implement a conglomeration of existing rules and regulations found in other countries especially in European countries and in the United States. Developing countries are also recommended to create national CERTs, organizations of cybersecurity experts to coordinate a nation to respond to cyber incidents. The proposed rules and regulations are largely irrelevant for developing nations and the proposed missions of a CERT do not match the needs of those countries. In promoting better guidance, the thesis identifies and discusses several challenges. It finds policy makers in developing nations are aware of the cyber threat, and that the cyber threat is different and often smaller in less ICT developed nations even if they are using similar equipment and software. To help craft better recommendations, the thesis identifies the benefits of ICT especially in agriculture, education and government. These benefits are analyzed to determine whether they would be protected by current guidance and the analysis determines that protecting ICT use in government should be the priority. In crafting future guidance the challenges are that nations have differences in ICT architecture and ICT use, and developing nations have fewer resources but also they have different resources to use. Another such difference is the common lack of a private cybersecurity sector and different expectations of government. This thesis concludes with discussing unexpected results. The first is Rwandan policy makers desire good enough security and have a higher risk tolerance concerning cyber threats than is found in more developed nations. In addition, open source software can be a potential way to reduce the cost of cyberspace defense and this thesis makes an initial investigation. The lesson of the thesis is that cybersecurity strategy is not a one size fits all and so it must be customized for each country.
Nachruf Helene Kazmaier (1920–2005)
Creators: name: Warth, Manfred
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2006

description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 162 (2006): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 162. Jahrgang
Zur Entwicklung der Diversität der Herpetofauna des östlichen Landschaftsschutzgebietes Spitzberg bei Tübingen am Neckar
Creators: name: Wanger, Thomas Cherico
name: Motzke, Iris
name: Rödel, Mark-Oliver
Publisher: name: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
Year: 2006

description: Mit dieser Arbeit legen wir die erste quantitative herpetofaunistische Bestandsaufnahme des östlichen Landschaftsschutzgebietes Spitzberg bei Tübingen am Neckar vor. Wir vergleichen unsere Daten mit früheren, beschreibenden Arbeiten aus den 60er und 80er Jahren und interpretieren die seitdem festzustellende Entwicklung für die 11 von uns nachgewiesenen Arten. In unseren sechs Untersuchungsgebieten, die aufgrund ihrer unterschiedlichen Lebensräume und den damit verbundenen unterschiedlichen Mikroklimaten ausgewählt wurden, fanden wir verschieden hohe Artenzahlen. Das Naturschutzgebiet Spitzberg wies trotz der sonnenintensiven Südexposition die niedrigste Amphibien- und Reptiliendiversität auf.
description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg, Bd. 162 (2006): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 162. Jahrgang
Astrocytic RIPK signaling promotes Parkinson's disease pathogenesis
Creators: name: Chang, Nydia Poshain
Publisher: name: No Publisher Supplied
Year: 2023

description: Neuroinflammation is a major contributor to the pathogenesis and progression of neurodegenerative diseases. Astrocytes are the most abundant glial cells in the central nervous system (CNS), where they serve diverse homeostatic functions, including promoting neurite outgrowth, phagocytosing cellular debris, and modulating immune responses in the CNS. However, following an inflammatory insult, astrocytes enter a reactive state characterized by neurotoxic activity and functional impairment. Emerging evidence suggests that reactive astrocytes can contribute to clinical neurodegenerative diseases, including Parkinson’s disease (PD). However, the mechanisms by which homeostatic astrocytes become reactive requires further investigation. Here, we show that aggregated -synuclein, an etiologic agent of PD, can drive midbrain astrocytes into reactive states by engaging the inflammatory transcription factor NF-kB. Additionally, we show that receptor-interacting serine/threonine protein kinase-3 (RIPK3) signaling mediates PFFs-induced inflammatory astrocyte reactivity and NF-kB activation. Moreover, genetic ablation of astrocytic RIPK3 is protective against pathophysiology and motor impairments in the neurotoxicant 1-methy-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) animal model of PD. Finally, we demonstrate that damage-associated molecular patterns (DAMPs) released by dying neurons perpetuate astrocyte reactivity by engaging astrocytic RAGE signaling in a RIPK3-dependent manner. Together, these studies identify novel mechanisms of neurotoxic astrocyte activation with implications for PD and other neurodegenerative diseases.
Philippe Poussier
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: 1 fichier (2 pages)
description: Autres destinataires : Pierre Sonigo, Caroline Petit, Roland Landman
Perturbative analysis of an n-Ising model on a random surface
Creators: name: Hikami, Shinobu
name: Brézin, Edouard
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Two dimensional quantum gravity coupled to a conformally invariant matter field of central charge c=n/2, is represented, in a discretized version, by n independent Ising spins per cell of the triangulations of a random surface. The matrix integral representation of this model leads to a diagrammatic expansion at large orders, when the Ising coupling constant is tuned to criticality, one extracts the values of the string susceptibility exponent. We extend our previous calculation to order eight for genus zero and investigate now also the genus one case in order to check the possibility of having a well-defined double scaling limit even c>1.
description: 9pp