cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Systematic SO(10) Operator Analysis for Fermion Masses
Creators: name: Anderson, G.
name: Raby, S.
name: Dimopoulos, S.
name: Hall, L. J.
name: Starkman, G.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new approach for deducing the theory of fermion masses at the scale of grand unification is proposed. Combining SO(10) grand unification, family symmetries and supersymmetry with a systematic operator analysis, the minimal set of fermion mass operators consistent with low energy data is determined. Exploiting the full power of SO(10) to relate up, down and charged lepton mass matrices, we obtain predictions for 7 of the mass and mixing parameters. The assumptions upon which the operator search and resulting predictions are based are stressed, together with a discussion of how the predictions are affected by a relaxation of some of the assumptions.The masses of the heaviest generation, $m_t,m_b$ and $m_τ$, are generated from a single renormalizable Yukawa interaction, while the lighter masses and the mixing angles are generated by non-renormalizable operators of the grand unified theory. The hierarchy of masses and mixing angles is thereby related to the ratio of grand to Planck scales, $M_G / M_P$. An explicit realization of the origin of such an economical pattern of operators is given in terms of a set of spontaneously broken family symmetries. In the preferred models the top quark is found to be heavy: $M_t = 180 \pm 15$ GeV, and $\tan β$ is predicted to be very large. Predictions are also given for $m_s, m_s/m_d , m_u/m_d, V_{cb}, V_{ub}/V_{cb}$ and the amount of CP violation. Stringent tests of these theories will be achieved by more precise measurements of $M_t, V_{cb}, α_s$ and $ V_{ub}/V_{cb}$ and by measurements of CP violation in neutral B meson decays.
description: 65 pages, 22 figures or complete manuscript available by mail. LBL-33531
British books overseas: some aspects of the work of British agencies involved in the promotion, sale and provision of British books overseas
Creators: name: Wilkinson, Neil
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: British books overseas: some aspects of the work of British agencies involved in the promotion, sale and provision of British books overseas
The control of iron oxidation state during FeO and olivine crystal growth
Creators: name: Klimm, D.
name: Ganschow, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Crystal growth experiments (micro-pulling down or Czochralski methods, respectively) and DTA/TG measurements with Fe2+ containing olivines (fayalite--forsterite solid solution) and with FeO (wustite) are performed. For both substances the oxygen partial pressure p_O2 of the growth atmosphere had to be adjusted within the stability region of Fe2+ for all temperatures ranging from room temperature to the melting point. The formation of Fe3+ (Fe3O4, Fe2O3) had to be avoided. The adjustment of p_O2 could be obtained by a mixture of argon, carbon dioxide and carbon monoxide. Thermodynamic equilibrium calculations show, that mixtures of an inert gas (e.g. argon) with another gas or gas mixture that supplies oxygen at elevated temperature (e.g. CO2/CO) are superior to the use of inert gases with constant oxygen admixture. The reason is that the Ar/CO2/CO mixture adjusts its oxygen concentration with temperature in a way similar to that needed for the stabilization of Fe2+.
description: talk on 14th International Conference on Crystal Growth (ICCG14-ICVGE12) 9-13 August 2004, Grenoble, France
Implications of aerosol formulation presentation for lung exposure and inhalation toxicity of p38 MAPK inhibitors in rats
Creators: name: Paul, Graham
Publisher: name: F1000 Research Limited
Year: 2019

description: Many inhaled drugs have been developed as crystalline dry powder formulations to prolong stability and optimise clinical drug delivery. Inhalation exposure of animals requires large amounts of drug, relative to other exposure routes, with financial and logistical implications for the supply of sufficient test article to facilitate non-clinical inhalation studies in early drug development. Expediting strategies (alternate aerosol forms or surrogate exposure routes) may reduce compound requirements and reduce the lead-in time for early preclinical studies. Three drugs of common pharmacology but differing physicochemical properties were used to determine if altered presentation of an inhaled drug affected the resultant lung exposure and pulmonary toxicology.

In vivo, male Crl:CD(SD) rats inhaled GSK-899 (low solubility), GSK-677 (high solubility) or GSK-361 (low solubility; high membrane permeability) for up to 28 days by snout-only inhalation exposure (1 hour) at target inhaled doses of ≤15 mg/kg. Aerosols were generated from dry powder formulations of micronised crystals (all compounds) or amorphous powder (GSK-899) blended with lactose, or as nebulised aqueous solutions (all compounds). The low aqueous solubility of GSK-361 and GSK-899 limited nebulised aerosol concentrations, resulting in maximum practicable inhaled doses of 1 mg/kg for a 1-hour exposure period. Rats (n=6/group) were euthanized after 28 days of treatment and lungs processed for examination by light microscopy. Additional rats (n=3/group/timepoint) were exposed and lungs homogenised after a single dose or 28 days of treatment for HPLC-MS/MS analysis of the test article. Macrophages harvested from satellite rats (n=1/compound) by bronchoalveolar lavage were processed for examination by transmission electron microscopy.

Lung pathology changes after 28 days correlated with drug persistence in lung tissue, which wasn’t always predicted from in vitro dissolution. Although the severity of lung changes was considerably less pronounced for amorphous than crystalline GSK-899, the inflammatory changes at the high dose were nevertheless considered adverse irrespective of the severity of the lung finding. Clinical safety margins were therefore unaffected by changing the physical state of GSK-899. Changing aerosol form may therefore shift the dose response of observed toxicity but it did not change the nature of the pathology. The results indicate membrane permeability may be a greater driver than solubility in vitro when predicting or mitigating pulmonary toxicology in drug design.
Length-Lex Open Constraints
Creators: name: Gregoire  Dooms
name: Mercier, Luc
name: Hentenryck, Pascal Van
name: Willem-Jan Van Hoeve
name: Michel, Laurent
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Open constraints were introduced to model the many industrial applications in which a task can be handled by several resources. Open constraints are unique because the set of variables over which the the constraint is defined is a set-variable. Regin and van Hoeve recently showed how to filter an open GCC constraint when the set variable use a subset-bound domain. This paper considers open constraints in which the set-variables use the richer length-lex domain of Gervet and Van Hentenryck which includes cardinality and lexicographic information, while enforcing bound-consistency for a variety of important constraints. The paper makes two orthogonal contributions. First, it shows how to derive a filtering algorithm for the length-lex open constraint from the cost-based version of the closed version. The key insight is that well chosen weights allow to map the total order of length-lex sets with the total order of set weights. Second, it shows how to derive a filtering algorithm for a length-lex open constraint from the filtering algorithm of the subset-bound open constraint. This technique is entirely generic and adds a factor n in complexity to the subset-bound open constraints. The key underlying insight is to recognize that a length-lex interval can be represented as the union of O(n) subset-bound intervals and their cardinalities. This result also allows to systematically lift filtering algorithms from subset-bound intervals to length-lex intervals.
Can INO be Sensitive to Flavor-Dependent Long-Range Forces?
Creators: name: Khatun, Amina
name: Thakore, Tarak
name: Agarwalla, Sanjib Kumar
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Flavor-dependent long-range leptonic forces mediated by the ultra-light and neutral bosons associated with gauged $L_e-L_μ$ or $L_e-L_τ$ symmetry constitute a minimal extension of the Standard Model. In presence of these new anomaly free abelian symmetries, the SM remains invariant and renormalizable, and can lead to interesting phenomenological consequences. For an example, the electrons inside the Sun can generate a flavor-dependent long-range potential at the Earth surface, which can enhance $ν_μ$ and $\barν_μ$ survival probabilities over a wide range of energies and baselines in atmospheric neutrino experiments. In this paper, we explore in detail the possible impacts of these long-range flavor-diagonal neutral current interactions due to $L_e-L_μ$ and $L_e-L_τ$ symmetries (one at-a-time) in the context of proposed 50 kt magnetized ICAL detector at INO. Combining the information on muon momentum and hadron energy on an event-by-event basis, ICAL can place stringent constraints on the effective gauge coupling $α_{eμ/eτ}<1.2\times 10^{-53}$ ($1.75\times 10^{-53}$) at 90$\%$ (3$σ$) C.L. with 500 kt$\cdot$yr exposure. The 90$\%$ C.L. limit on $α_{eμ}$ ($α_{eτ}$) from ICAL is $\sim 46$ (53) times better than the existing bound from the Super-Kamiokande experiment.
description: 26 pages, 30 pdf figures, 2 tables
title: Absolute orientation of Galileo orbits from simulated VLBI and GNSS observations
Creators: name: Wolf, Helene
name: Böhm, Johannes
name: Hugentobler, Urs
Publisher: name: TU Wien
Year: 2023
Subjects: Galileo
satellite orbits
VieVS
absolute orientation

description: The possibility of observing Galileo satellites with Very Long Baseline Interferometry (VLBI) telescopes may become possible in future as there are plans to put VLBI transmitters on these satellites. This would not only bring improvements for products, such as the International Terrestrial Reference Frame (ITRF), but would also allow to determine the absolute orientation of the satellite orbit with respect to the celestial frame. In this study, we investigate the determination of the right ascension of the ascending node Ω of a Galileo satellite orbit using simulated VLBI observations to quasars and a Galileo satellite. Therefore, a schedule including VLBI observations to a satellite covering an ultra short orbit arc of 40 minutes of the satellite surrounded by quasar observations is created, simulated and analysed. There are two different analysis options examined, first estimating Ω in a shorter interval of ten minutes and secondly estimating only one value for the whole 40 minute satellite period. The repeatability of Ω by estimating it in a ten minute interval is between 0.3 and 0.5 mas which corresponds to 4.5 cm and 7.5 cm at the altitude of the orbit. If there is only one value estimated the repeatability is below 0.2 mas which corresponds to approximately 3 cm at the altitude of the orbit.
Learning-Based Quality Control for Cardiac MR Images
Creators: name: Tarroni, Giacomo
name: Oktay, Ozan
name: Bai, Wenjia
name: Schuh, Andreas
name: Suzuki, Hideaki
name: Passerat-Palmbach, Jonathan
name: de Marvao, Antonio
name: O'Regan, Declan P.
name: Cook, Stuart
name: Glocker, Ben
name: Matthews, Paul M.
name: Rueckert, Daniel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The effectiveness of a cardiovascular magnetic resonance (CMR) scan depends on the ability of the operator to correctly tune the acquisition parameters to the subject being scanned and on the potential occurrence of imaging artefacts such as cardiac and respiratory motion. In the clinical practice, a quality control step is performed by visual assessment of the acquired images: however, this procedure is strongly operator-dependent, cumbersome and sometimes incompatible with the time constraints in clinical settings and large-scale studies. We propose a fast, fully-automated, learning-based quality control pipeline for CMR images, specifically for short-axis image stacks. Our pipeline performs three important quality checks: 1) heart coverage estimation, 2) inter-slice motion detection, 3) image contrast estimation in the cardiac region. The pipeline uses a hybrid decision forest method - integrating both regression and structured classification models - to extract landmarks as well as probabilistic segmentation maps from both long- and short-axis images as a basis to perform the quality checks. The technique was tested on up to 3000 cases from the UK Biobank as well as on 100 cases from the UK Digital Heart Project, and validated against manual annotations and visual inspections performed by expert interpreters. The results show the capability of the proposed pipeline to correctly detect incomplete or corrupted scans (e.g. on UK Biobank, sensitivity and specificity respectively 88% and 99% for heart coverage estimation, 85% and 95% for motion detection), allowing their exclusion from the analysed dataset or the triggering of a new acquisition.
Length-Lex Bounds Consistency for Knapsack Constraints
Creators: name: Malitsky, Yuri
name: Meinoff  Sellmann
name: Willem-Jan Van Hoeve
Publisher: name: Carnegie Mellon University
Year: 1962
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Recently, a new domain store for set-variables has been proposed which totally orders all values in the domain of a set-variable based on cardinality and lexicography. Traditionally, knapsack constraints have been studied with respect to the required and possible set domain representation. For this domainstore efficient filtering algorithms achieving relaxed and approximated consistency are known. In this work, we study the complexity of achieving length-lex and approximated length-lex bounds consistency. We show that these strengthened levels of consistency can still be achieved in (pseudo-)polynomial time. In addition, we devise heuristic algorithms that work efficiently in practice.
Food Price Shocks and the Changing Pattern of Consumption Expenditure across Decile Classes in Rural and Urban India: A Difference-in-Difference Analysis
Creators: name: Sinha, Subhra
name: Laha, Arindam
name: Sinha, Subhra
name: Laha, Arindam
Publisher: name: Unknown
Year: 2019
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: access to food,
subject: availability of food
subject: consumption expenditure
subject: decile classes
subject: food price volatility

description: Against the backdrop of liberalised trade in agricultural commodities in the twenty-first century, world food prices have risen at a faster pace since 2007. Food price volatility is inextricably connected with the problems of food security due to its implications for the availability of food, household incomes and purchasing power, malnutrition, per capita consumption expenditure and the changing patterns of consumption on the part of poor people. In India’s case, a declining trend in the availability of food grains in the post-reform period can be explained by the encouragement given to the export of food grains due to India’s comparative advantage vis-à-vis the international market in relation to the pricing of food grains. However, the mere availability of food in the country is obviously not sufficient to ensure access to food for all households. In this context, our main objective in this paper is to evaluate the implications of food price volatility on access to food across decile classes in India. Empirical results reveal that consumption expenditure differs in both spatial (rural and urban) and temporal (pre- and post-2008) dimensions; specifically, the relative loss of consumption expenditure is significant in urban regions in comparison to rural regions in post-2008. In fact, difference-in-difference regression results also reinforced our earlier findings that differences in consumption expenditure can be explained by the spatial effect.
Infinite Renormalization of Theta-Term and Jarlskog Invariant for CP-Violation
Creators: name: Khriplovich, I. B.
name: Vainshtein, A. I.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The logarithmic ultraviolet divergence in the theta-term induced by electroweak interactions in the Kobayashi-Maskawa model of CP-violation, found by Ellis and Gaillard, is discussed. We relate it to the Jarlskog CP-odd invariant of quark mass matrix. The divergence arises in 14th order in Higgs coupling as well as in 12th order plus 2nd order in U(1) gauge boson coupling.
description: 6 pages + 1 figure (included), LaTex, TPI-MINN-93/91-T, UMN-TH-1212/93
title: ADCO, Cartulaire des Dominicains de Dijon (1286), Cart. 221 (H 53), 170 folios, f. 0332
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
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 des Dominicains de Dijon (1286), Archives départementales de la Côte-d'Or, Cart. 221 (H 53), 170 folios. Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire des Dominicains de Dijon (1286), Archives départementales de la Côte-d'Or, Cart. 221 (H 53), 170 folios, f. 0332, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb15250518p
description: Provenance: http://www.idref.fr/02643413X/id
description: Provenance: https://www.geonames.org/6453767
description: Provenance: Dijon
description: Provenance: http://www.wikidata.org/entity/Q7003
Lending, Lying, and Costly Auditing
Creators: name: Kareken, John
name: Stecher, Jack
Publisher: name: Carnegie Mellon University
Year: 2000
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: In this paper, we describe a bankruptcy game played in a pure-exchange, perfectly competitive economy, and establish the existence of competitive equilibria. The game admits of lying by borrowers and costly auditing by lenders. The equilibria are characterized by (endogenously determined) equilibrium probabilities of default, loan quantities, interest rates, and default risk premia, and by equilibria simultaneously determined in risk-free debt markets. We find that the optimal debt contract is the standard debt contract, and that the risk-free debt market may be inactive, as all parties may strictly prefer risky debt contracts to risk-free debt.
Folding a 3D Euclidean space
Creators: name: Lucero, Jorge C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics
subject: 51M15, 51N20, 00A08,

description: This paper considers an extension of origami geometry to the case of "folding" a three dimensional (3D) space along a plane. First, all possible incidence constraints between given points, lines and planes are analyzed by using the geometry of reflections. Next, a set of 3D elementary fold operations is defined, which satisfy specific combinations of constraints with a finite number of solutions. The set consists of 47 valid fold operations, and solutions to some of them are explored to determine their number and conditions of existence.
description: 22 pages, 18 figures. Expanded explanation in Section 4.1 and minor corrections. This is an expanded version of the paper published in Origami7
How universal are asymptotics of disconnection times in discrete cylinders?
Creators: name: Sznitman, Alain-Sol
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10, 60K35, 82C41 (Primary)

description: We investigate the disconnection time of a simple random walk in a discrete cylinder with a large finite connected base. In a recent article of A. Dembo and the author it was found that for large $N$ the disconnection time of $G_N\times\mathbb{Z}$ has rough order $|G_N|^2$, when $G_N=(\mathbb{Z}/N\mathbb{Z})^d$. In agreement with a conjecture by I. Benjamini, we show here that this behavior has broad generality when the bases of the discrete cylinders are large connected graphs of uniformly bounded degree.
description: Published in at http://dx.doi.org/10.1214/009117907000000114 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Phase diagram for the one-way quantum deficit of two-qubit X states
Creators: name: Yurischev, M. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The one-way quantum deficit, a measure of quantum correlation, can exhibit for X quantum states the regions (subdomains) with the phases $Δ_0$ and $Δ_{π/2}$ which are characterized by constant (i.e., universal) optimal measurement angles, correspondingly, zero and $π/2$ with respect to the $z$-axis and a third phase $Δ_\vartheta$ with the variable (state-dependent) optimal measurement angle $\vartheta$. We build the complete phase diagram of one-way quantum deficit for the XXZ subclass of symmetric X states. In contrast to the quantum discord where the region for the phase with variable optimal measurement angle is very tiny (more exactly, it is a very thin layer), the similar region $Δ_\vartheta$ is large and achieves the sizes comparable to those of regions $Δ_0$ and $Δ_{π/2}$. This instils hope to detect the mysterious fraction of quantum correlation with the variable optimal measurement angle experimentally.
description: 20 pages, 10 figures (20 eps files)
Lehman Matrices
Creators: name: Cornuejols, Gerard
name: Betrand  Guenin
name: Tunçel, Levent
Publisher: name: Carnegie Mellon University
Year: 1968
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: A pair of square 0, 1 matrices A,B such that ABT = E + kI (where E is the n × n matrix of all 1s and k is a positive integer) are called Lehman matrices. These matrices figure prominently in Lehman’s seminal theorem on minimally nonideal matrices. There are two choices of k for which this matrix equation is known to have infinite families of solutions. When n = k2+k+1 and A = B, we get point-line incidence matrices of finite projective planes, which have been widely studied in the literature. The other case occurs when k = 1 and n is arbitrary, but very little is known in this case. This paper studies this class of Lehman matrices and classifies them according to their similarity to circulant matrices.
Signatures of surface Majorana modes in the magnetic response of topological superconductors
Creators: name: Chirolli, Luca
name: Guinea, Francisco
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the magnetic susceptibility of a two-dimensional cone of Majorana modes localised at the surface of a three-dimensional time-reversal invariant topological superconductor belonging to class DIII. A field parallel to the surface tilts the surface Majorana cone along the supercurrent direction. For fields larger than a critical threshold field $H^*$, $H>H^*$, a transition from type I to type II Dirac cone occurs and a finite current carried by the Majorana modes start to flow, leading to an additional diamagnetic contribution to the surface magnetization. On a curved surface interband transitions are promoted by the Majorana spin connection that couples to the external field, giving rise to a finite frequency magnetic susceptibility.
description: 7 pages: 5 main text, 2 Supp. Mat, 2 figures
Non-isometric domains with the same Marvizi-Melrose invariants
Creators: name: Buhovsky, Lev
name: Kaloshin, Vadim
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37D50, 35P30, 37E40, 37J50

description: For any strictly convex planar domain $Ω\subset \mathbb{R}^2$ with a $C^\infty$ boundary one can associate an infinite sequence of spectral invariants introduced by Marvizi-Merlose. These invariants can generically be determined using the spectrum of the Dirichlet problem of the Laplace operator. A natural question asks if this collection is sufficient to determine $Ω$ up to isometry. In this paper we give a counterexample, namely, we present two non-isometric domains $Ω$ and $\bar Ω$ with the same collection of Marvizi-Melrose invariants. Moreover, each domain has countably many periodic orbits $\{S^n\}_{n \geqslant 1}$ (resp. $\{ \bar S^n\}_{n \geqslant 1}$) of period going to infinity such that $ S^n $ and $ \bar S^n $ have the same period and perimeter for each $ n $.
Running of Fermion Observables in Non-Supersymmetric SO(10) Models
Creators: name: Ohlsson, Tommy
name: Pernow, Marcus
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the complete renormalization group running of fermion observables in two different realistic non-supersymmetric models based on the gauge group $\textrm{SO}(10)$ with intermediate symmetry breaking for both normal and inverted neutrino mass orderings. Contrary to results of previous works, we find that the model with the more minimal Yukawa sector of the Lagrangian fails to reproduce the measured values of observables at the electroweak scale, whereas the model with the more extended Yukawa sector can do so if the neutrino masses have normal ordering. The difficulty in finding acceptable fits to measured data is a result of the added complexity from the effect of an intermediate symmetry breaking as well as tension in the value of the leptonic mixing angle $θ^\ell_{23}$.
description: 15 pages, 3 figures, 4 tables. Final version published in JHEP
Learning-by-Doing, Organizational Forgetting, and Industry Dynamics
Creators: name: Besanko, David
name: Doraszelski, Ulrich
name: Kryukov, Yaroslav
name: Satterthwaite, Mark
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Learning-by-doing and organizational forgetting have been shown to be important in a variety of industrial settings. This paper provides a general model of dynamic competition that accounts for these economic fundamentals and shows how they shape industry structure and dynamics. Previously obtained results regarding the dominance properties of ¯rms' pricing behavior no longer hold in this more general setting. We show that forgetting does not simply negate learning. Rather, learning and forgetting are distinct economic forces. In particular, a model with learning and forgetting can give rise to aggressive pricing behavior, market dominance, and multiple equilibria, whereas a model with learning alone cannot.
Renormalization Group Study of the Standard Model and its Extensions: II. the Minimal Supersymmetric Standard Model
Creators: name: Castano, D. J.
name: Piard, E. J.
name: Ramond, P.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we summarize the minimal supersymmetric standard model as well as the renormalization group equations of its parameters. We proceed to examine the feasability of the model when the breaking of supersymmetry is parametrized by the soft terms suggested by supergravity theories. In such models, the electroweak symmetry is exact at tree level and is broken spontaneously at one loop order. We make the additional assumption that the GUT-inspired relation $m_b=m_τ$ be valid at the scale where the gauge coupling constants unify, which constrains the value of the top quark mass. For all types of soft breaking terms expected in supergravity theories, we present the results of numerical runs which yield electroweak breaking at the required scale. These yield not only the allowed ranges for the soft supersymmetry breaking parameters, but also the value of the supersymmetric partner' masses. For example in the strict no-scale model, in which global supersymmetry breaking arises solely from soft supersymmetry breaking parameters, but also the value of the supersymmetric partner' masses. For example in the strict no-scale model, in which global supersymmetry breaking arises solely from soft gaugino masses, we find that $M_t$ can be no heavier than $\sim 127$ GeV.
description: 41 pages. ReVTeX typeset. 8 figures not included but available (as well as a full postscript version of the paper including the figures) by anonymous FTP at uful07.phys.ufl.edu in the het/UFIFT-HEP-93-18 directory. Report No. UFIFT-HEP-93-18
The Stellar Initial Mass Function at the Epoch of Reionization
Creators: name: Chary, Ranga-Ram
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I provide estimates of the ultraviolet and visible light luminosity density at z~6 after accounting for the contribution from faint galaxies below the detection limit of deep Hubble and Spitzer surveys. I find the rest-frame V-band luminosity density is a factor of ~2-3 below the ultraviolet luminosity density at z~6. This implies that the maximal age of the stellar population at z~6, for a Salpeter initial mass function, and a single, passively evolving burst, must be <100 Myr. If the stars in z~6 galaxies are remnants of the star-formation that was responsible for ionizing the intergalactic medium, reionization must have been a brief process that was completed at z<7. This assumes the most current estimates of the clumping factor and escape fraction and a Salpeter slope extending up to 200 M_{\sun} for the stellar initial mass function (IMF; dN/dM \propto M^α, α=-2.3). Unless the ratio of the clumping factor to escape fraction is less than 60, a Salpeter slope for the stellar IMF and reionization redshift higher than 7 is ruled out. In order to maintain an ionized intergalactic medium from redshift 9 onwards, the stellar IMF must have a slope of α=-1.65 even if stars as massive as ~200 M_{\sun} are formed. Correspondingly, if the intergalactic medium was ionized from redshift 11 onwards, the IMF must have α~-1.5. The range of stellar mass densities at z~6 straddled by IMFs which result in reionization at z>7 is 1.3+/-0.4\times10^{7} Msun/Mpc^3.
description: 25 pages, 2 tables, 6 figures, ApJ, in press, v680 n1
Making Hyperbooks for Climate Change Literature
Creators: name: Worthngton, Simon
Publisher: name: semanticClimate
Year: 2024

description: Hyperbooks are open access web publications that contain semantified content, computational interactive components, and are made a multi-format: web, paged web, epub, print-on-demand, etc. 

Hyperbooks are machine readable — they are made with open source technology, use W3C open standards, and follow Open Science, FAIR Data Principles, and Open Access best practice. 

A number of prototypes for hyperbooks have been made by the semanticClimate project using a variety of climate change science literature from the UN IPCC and UNFCCC. 

The focus will be on how the prototypes have been made so far with #semanticClimate, the tech stack involved, and the roadmap for future development.
Learning to Cross Boundaries in Online Knowledge Communities: Fading of Surface-level and Rise of Deep-level Similarity with Experience
Creators: name: Hwang, Elina H.
name: Param Singh
name: Argote, Linda
Publisher: name: Carnegie Mellon University
Year: 1980
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: Many organizations have launched online knowledge forums to promote knowledge flow across boundaries. This paper theorizes and empirically tests whether employees transfer knowledge within or across boundaries and how the tendencies change as a function of a knowledge provider’s experience in an online forum. We suggest that participants prefer to transfer knowledge to others with whom they share common ground and use joint characteristics with their communicating partners to assess the level of common ground. In particular, we propose that both surface-level (location and status) and deep-level (expertise) similarities of a dyad drive knowledge transfer. Further we propose that a knowledge provider’s cumulative knowledge-sharing experience in an online forum moderates the relative effects of surface-level and deep-level similarities on knowledge transfer. Using panel data at an online knowledge forum of a large IT consulting firm, we find that similarity breeds connection in online forums. Additionally, we find that the effect of deep-level similarity on knowledge transfer increases whereas the effect of surface-level similarity decreases with knowledge providers’ experience. That is, as participants gain experience, they provide knowledge less frequently to others at the same location and in the same status and more frequently to others with similar expertise.
Fokker-Planck Equation for Fractional Systems
Creators: name: Tarasov, Vasily E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The normalization condition, average values and reduced distribution functions can be generalized by fractional integrals. The interpretation of the fractional analog of phase space as a space with noninteger dimension is discussed. A fractional (power) system is described by the fractional powers of coordinates and momenta. These systems can be considered as non-Hamiltonian systems in the usual phase space. The generalizations of the Bogoliubov equations are derived from the Liouville equation for fractional (power) systems. Using these equations, the corresponding Fokker-Planck equation is obtained.
Searching for the Dark Force with 21-cm Spectrum in Light of EDGES
Creators: name: Li, Chunlong
name: Cai, Yi-Fu
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The EDGES Collaboration has recently announced the detection of the 21-cm spectrum with an absorption profile centred at $78$ megahertz, of which the depth is deeper than that expected by the standard cosmological paradigm. To enrich the heating process of baryons due to scattering with dark matter during dark ages, we in this Letter explore the possibility of extra heat transfer between dark sector compositions and their observational signatures on the 21-cm cosmological spectrum. By parameterizing interaction models of the dark Universe, we find that the observational constraint on the parameter space of dark matter can be slightly relaxed but the discrepancy with the commonly predicted parameter space of weakly interacting massive particles remains. Our analyses also reveal that the interaction between dark compositions may leave observational signatures on the 21-cm spectrum during dark ages and thus would become detectable in the forthcoming 21-cm cosmology.
description: 6 pages, 6 figures
"Large $(g-2)_μ$ in SU(5)xU(1) supergravity models"
Creators: name: Lopez, J.
name: Nanopoulos, D.
name: Wang, X.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the supersymmetric contribution to the anomalous magnetic moment of the muon within the context of $SU(5)\times U(1)$ supergravity models. The largest possible contributions to $a^{susy}_μ$ occur for the largest allowed values of $\tanβ$ and can easily exceed the present experimentally allowed range, even after the LEP lower bounds on the sparticle masses are imposed. Such $\tanβ$ enhancement implies that $a^{susy}_μ$ can greatly exceed both the electroweak contribution ($\approx1.95\times10^{-9}$) and the present hadronic uncertainty ($\approx\pm1.75\times10^{-9}$). Therefore, the new E821 Brookhaven experiment (with an expected accuracy of $0.4\times10^{-9}$) should explore a large fraction (if not all) of the parameter space of these models, corresponding to slepton, chargino, and squarks masses as high as 200, 300, and 1000 GeV respectively. Moreover, contrary to popular belief, the $a^{susy}_μ$ contribution can have either sign, depending on the sign of the Higgs mixing parameter $μ$: $a^{susy}_μ>0\,(<0)$ for $μ>0$ ($μ<0$). The present $a_μ$ constraint excludes chargino masses in the range $45-120\GeV$ depending on the value of $\tanβ$, although there are no constraints for $\tanβ\lsim8$. We also compute $a^{susy}_τ$ and find $|a^{susy}_τ|\approx(m_τ/m_μ)^2\,|a^{susy}_μ|\lsim10^{-5}$ and briefly comment on its possible observability.
description: 10 pages, 4 figures (not included), Latex. Figures available from me@cryptons.tamu.edu as ps files (total 0.985MB) or uuencoded file (0.463MB). CERN-TH.6986/93, CTP-TAMU-44/93
Working time organisation of senior workers in agricultural companies with a focus on age management
Creators: name: Urbancova, Hana
name: Urbancova, Hana
Publisher: name: Unknown
Year: 2019
Subjects: subject: Institutional and Behavioral Economics
subject: Labor and Human Capital
subject: age management
subject: agricultural companies
subject: human resource management
subject: competence development

description: The current situation on European agricultural labour markets and the expected demographic development emphasise the need to address the issues of work and working time organisation in order to attract a young generation to agriculture. The aim of this paper is to evaluate the use of modern individual methods of working time organisation within agricultural companies. Data was collected through a quantitative survey consisting of 259 active agricultural companies in the Czech Republic. Results suggest that three factors were responsible for working time organisation in agricultural companies: support of flexible employment forms, employee productivity and the use of specialists. The right working time organisation of all age groups supports the cooperation of all employees and ensures knowledge continuity.
Learning Outcomes for a Business Information Systems Undergraduate Program
Creators: name: Ducrot, Joelle
name: Miller, Steven
name: Goodman, Paul S.
Publisher: name: Carnegie Mellon University
Year: 2005
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: We present a learning outcomes framework for an Information Systems (IS) undergraduate program. This framework includes a supporting software application that goes beyond any other attempt reported to date to integrate learning outcomes into program-wide and course-wide curriculum development, ongoing curriculum redesign, and student learning support. The Learning Outcomes Management System (LOMS) described here is a first-of-a-kind information system created as part of implementing a program-wide learning outcomes framework in a university setting. Our learning outcomes framework is distinct in that 1) it is based on a three-level hierarchically structured definition of learning outcomes that consistently apply to both the entire IS program as well as to each individual IS course; 2) customization for specific courses is easily done without requiring the drafting of new learning outcomes; 3) the dean’s office and faculty use the learning outcomes framework to design, monitor, and revise both the entire IS curriculum as well as each individual course on an ongoing basis; 4) when students assess their own capabilities against our school’s learning outcomes, it is done on a more global basis (versus a course specific basis), based on what students have done in their IS coursework, in their business, social science, and liberal arts coursework, as well as in their internships and extra-curricular activities; and 5) we incorporate the framework into a school-wide information system, LOMS, which has an application and supporting interface customized for faculty’s needs, students’ needs, and employers’ needs.
Properties of superheavy isotopes Z=120 and isotones N=184 within the Skyrme-HFB model
Creators: name: Kosior, A.
name: Staszczak, A.
name: Wong, Cheuk-Yin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the nuclear properties of even-even superheavy $Z$=120 isotopes and $N$=184 isotones with the Skyrme Hartree-Fock-Bogoliubov (HFB)approach. Within this model we examine the deformation energy surfaces and two paths to fission: a reflection-symmetric path with elongated fission fragments (sEF) and a reflection-asymmetric path corresponding to elongated fission fragments (aEF). Furthermore, we explore the energy surfaces in the region of very large oblate deformations with toroidal nuclear density distributions. While the energy surfaces of toroidal $Z$=120 isotopes and $N$=184 isotones do not possess energy minima without angular momenta,local energy minima (toroidal high spin isomeric states) appear for many of these superheavy nuclei with specific angular momenta about the symmetry axis. We have theoretically located the toroidal high spin isomers (THSIs) of $^{302}$Og$_{184}$,$^{302}120_{182}$, $^{306}120_{186}$, and $^{306}122_{184}$.
description: 12 pages, 8 figures, presented at the XXIV Nuclear Physics Workshop "Marie and Pierre Curie", Kazimierz Dolny, Poland, September 20-24, 2017
Non-gapped Fermi surfaces, quasiparticles and the anomalous temperature dependence of the near-$E_F$ electronic states in the CMR oxide La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ with $x=0.36$
Creators: name: de Jong, S.
name: Huang, Y.
name: Santoso, I.
name: Massee, F.
name: Follath, R.
name: Schwarzkopf, O.
name: Patthey, L.
name: Shi, M.
name: Golden, M. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: After years of research into colossal magnetoresistant (CMR) manganites using bulk techniques, there has been a recent upsurge in experiments directly probing the electronic states at or near the surface of the bilayer CMR materials La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ using angle-resolved photoemission or scanning probe microscopy. Here we report new, temperature dependent, angle resolved photoemission data from single crystals with a doping level of $x=0.36$. The first important result is that there is no sign of a pseudogap in the charge channel of this material for temperatures below the Curie temperature $T_C$. The second important result concerns the temperature dependence of the electronic states. The temperature dependent changes in the Fermi surface spectra both at the zone face and zone diagonal regions in $k$-space indicate that the coherent quasiparticle weight disappears for temperatures significantly above $T_C$, and that the $k$-dependence of the T-induced changes in the spectra invalidate an interpretation of these data in terms of the superposition of a `universal' metallic spectrum and an insulating spectrum whose relative weight changes with temperature. In this sense, our data are not compatible with a phase separation scenario.
description: 6 pages, 4 figures
Stable equatorial ice belts at high obliquity in a coupled atmosphere-ocean model
Creators: name: Kilic, Cevahir
name: Lunkeit, Frank
name: Raible, Christoph C.
name: Stocker, Thomas F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Various climate states at high obliquity are realized for a range of stellar irradiance using a dynamical atmosphere-ocean-sea ice climate model in an Aquaplanet configuration. Three stable climate states are obtained that differ in the extent of the sea ice cover. For low values of irradiance the model simulates a Cryoplanet that has a perennial global sea ice cover. By increasing stellar irradiance, transitions occur to an Uncapped Cryoplanet with a perennial equatorial sea ice belt, and eventually to an Aquaplanet with no ice. Using an emulator model we find that the Uncapped Cryoplanet is a robust stable state for a range of irradiance and high obliquities and contrast earlier results that high-obliquity climate states with an equatorial ice belt may be unsustainable or unachievable. When the meridional ocean heat flux is strengthened, the parameter range permitting a stable Uncapped Cryoplanet decreases due to melting of equatorial sea ice. Beyond a critical threshold of meridional ocean heat flux, the perennial equatorial ice belt disappears. Therefore, a vigorous ocean circulation may render it unstable. Our results suggest that perennial equatorial ice cover is a viable climate state of a high-obliquity exoplanet. However, due to multiple equilibria, this state is only reached from more glaciated conditions, and not from less glaciated conditions.
description: 9 pages, 5 figures, ApJ accepted
Properties of Orbitally Excited Heavy-Light Mesons
Creators: name: Eichten, Estia J.
name: Hill, Christopher T.
name: Quigg, Chris
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Orbitally excited heavy-light mesons are potentially important as tools for tagging the flavors and momenta of ground-state pseudoscalars detected through weak decays. We use heavy-quark symmetry supplemented by insights gleaned from potential models to estimate masses and widths of $p$-wave $B$, $B_s$, and $D_s$ mesons. We generalize these results to higher excitations.
description: 10 pages, FERMILAB--Pub--93/255--T (uses REVTEX macros)