cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient quantum entanglement distribution over an arbitrary collective-noise channel
Creators: name: Sheng, Yu-Bo
name: Deng, Fu-Guo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an efficient quantum entanglement distribution over an arbitrary collective-noise channel. The basic idea in the present scheme is that two parties in quantum communication first transmit the entangled states in the frequency degree of freedom which suffers little from the noise in an optical fiber. After the two parties share the photon pairs, they add some operations and equipments to transfer the frequency entanglement of pairs into the polarization entanglement with the success probability of 100\%. Finally, they can get maximally entangled polarization states with polarization independent wavelength division multiplexers and quantum frequency up-conversion which can erase distinguishability for frequency. Compared with conventional entanglement purification protocols, the present scheme works in a deterministic way in principle. Surprisingly, the collective noise leads to an additional advantage.
description: 6 pages, 2 figures
Spectral dimension of Horava-Snyder spacetime and the $AdS_2\times S^2$ momentum space
Creators: name: Brito, F. A.
name: Passos, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the UV-regime at the Lifshitz point $z=3$ is equivalent to work with a momenta manifold whose topology is the same as that of an $AdS_2\times S^2$ space. According to Snyder's theory, curved momentum space is related to non-commutative quantized spacetime. In this sense, our analysis suggests an equivalence between Horava-Lifshitz and Snyder's theory.
description: 5 pages, revtex, 1 figure, version to appear in EPL
On the 3D steady flow of a second grade fluid past an obstacle
Creators: name: Konieczny, Paweł
name: Kreml, Ondřej
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q35, 76D03

description: We study steady flow of a second grade fluid past an obstacle in three space dimensions. We prove existence of solution in weighted Lebesgue spaces with anisotropic weights and thus existence of the wake region behind the obstacle. We use properties of the fundamental Oseen tensor together with results achieved in \cite{Koch} and properties of solutions to steady transport equation to get up to arbitrarily small $\ep$ the same decay as the Oseen fundamental solution.
Making Headway on the Hemp Industry in Colorado: The CHAMP Initiative
Creators: name: Hill, Rebecca
name: Mooney, Daniel
name: Thilmany, Dawn
name: Hill, Rebecca
name: Mooney, Daniel
name: Thilmany, Dawn
Publisher: name: Unknown
Year: 2020
Subjects: Agricultural and Food Policy
Crop Production/Industries

description: Establishing state hemp programs in the U.S. West creates an increased need for economic professionals to understand key supply chain issues for this new alternative crop. The Colorado Hemp Advancement Management Plan (CHAMP) is a comprehensive blueprint for the state’s fledgling hemp industry. Making the plan entailed an examination of the complete supply chain, with input gathered from over 150 stakeholders organized into 8 thematic supply chain groups. This article reflects on the CHAMP initiative by describing the state’s hemp sector and summarizing key issues related to research and development, cultivation, testing, processing, transportation, manufacturing, and banking and insurance segments of the supply chain. These issues will likely pertain to other western hemp programs beyond Colorado as they also make headway into this sector.
A Class of Infinite-dimensional Frobenius Manifolds and Their Submanifolds
Creators: name: Wu, Chao-Zhong
name: Xu, Dingdian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We construct a class of infinite-dimensional Frobenius manifolds on the space of pairs of certain even functions meromorphic inside or outside the unit circle. Via a bi-Hamiltonian recursion relation, the principal hierarchies associated to such Frobenius manifolds are found to be certain extensions of the dispersionless two-component BKP hierarchy. Moreover, we show that these infinite-dimensional Frobenius manifolds contain finite-dimensional Frobenius submanifolds as defined on the orbit space of Coxeter groups of types B and D.
description: Proposition 2.11 and its proof are revised
Ein metrikbasierter Ansatz zur Messung der Aktualität von Daten in Informationssystemen
Creators: name: Heinrich, Bernd
name: Klier, Mathias
name: Görz, Quirin
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: Datenqualität, Aktualität, Metrik, Messung
subject: 330 Wirtschaft

description: Die Verbesserung der Aktualität von Daten in Informationssystemen wird in Wissenschaft und Praxis intensiv diskutiert. In diesem Zuge werden auch geeignete Metriken zur Messung der Aktualität von Daten gefordert. Deshalb wird im Beitrag eine wahrscheinlichkeitstheoretisch fundierte Metrik zur weitgehend automatisierbaren Messung der Aktualität konstruiert, die im Vergleich zu bestehenden Ansätzen eine Kardinalskalierung und Interpretierbarkeit der Metrikergebnisse als Wahrscheinlichkeiten gewährleistet. Damit können die Metrikergebnisse methodisch fundiert in Erwartungswertkalküle von Entscheidungen eingehen. Ferner erlaubt die Metrik eine Konfiguration, um v. a. datenattributspezifische Charakteristika und vorhandene Zusatzdaten bei der Messung zu berücksichtigen. Die Evaluation des Ansatzes erfolgt einerseits anhand von sechs allgemeinen Anforderungen an Datenqualitätsmetriken. Andererseits demonstriert ein reales Fallbeispiel die Instanziierbarkeit und Anwendbarkeit sowie den praktischen Mehrwert der neuen Metrik.
Constraints on geometry from causal holographic information and relative entropy
Creators: name: Saraswat, Krishan
Publisher: name: University of British Columbia
Year: 2017

description: In this thesis we find constraints to asymptotically anti de-Sitter space dual to holographic conformal field theory states using the holographic duality. A recent conjecture involving the causal holographic information surface propsed that for smooth asymptotically anti de-Sitter spacetimes that obey the null energy condition, the area of the Ryu-Takayanagi surface will always be less than or equal to the area of the causal holographic information surface. This conjecture is explored in three dimensional spacetimes that are dual to translation invariant states on the boundary conformal field theory in two dimensions. A series expansion of the Ryu-Takayanagi surface and causal holographic information surface is derived, and is used to translate the constraint between the ar- eas of the two surfaces into a constraint on the asymptotic structure of such geometries near the conformal boundary. The translated constraints are compared to the constraints given by the null energy condition - and it is found that the first two leading order constraints are the same. We then outline some preliminary results of an ongoing project whose goal is to understand the dual of relative entropy of holographic states defined on null cone regions on the conformal boundary. We derive the modular Hamiltonian for vacuum states defined on null cone regions in a conformal field theory using known results for modular Hamiltonians on null planes. We also derive the Ryu- Takayanagi surface associated with such null cone regions. Using these results, it is argued that, for null cones whose base is cut by a constant time cut, will not give new constraints beyond what is already known for ball shaped regions.
Odessa Sub-area Potato Production & Processing Impacts Under an Irrigation-Water Shortage
Creators: name: Nadreau, Timothy P.
name: Fortenbery, T. Randall
name: Nadreau, Timothy P.
name: Fortenbery, T. Randall
Publisher: name: Unknown
Year: 2020
Subjects: Crop Production/Industries
Environmental Economics and Policy

description: The Odessa Sub-area lies in the second, and uncompleted, region of Washington’s Columbia Basin Water Project. Water used for irrigation in the region is currently pumped from as deep as 700 feet, and water access is steadily declining. We measure the economic losses to the potato producing region that would result from further reducing access to water for crop irrigation in the Columbia Basin. Estimated costs are adjusted for the gains in wheat production that would result as affected growers transition their land into the next best non-irrigated crop alternative in the region. Then, we move beyond the standard contribution analysis by looking not only at the net losses in production, but potential forward linked losses from potato processing plant closures.
Spectral problem of block-rectangular hierarchical matrices
Creators: name: Gutkin, B.
name: Osipov, V. Al.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistics Theory (math.ST)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The spectral problem for matrices with a block-hierarchical structure is often considered in context of the theory of complex systems. In the present article, a new class of matrices with a block-rectangular non-symmetric hierarchical structure is introduced and the corresponding spectral problem is investigated. Using these results we study a model of error generation in information sequence where such block-rectangular hierarchical matrices appear in a natural way.
description: 18 pages, 1 figure
Hole spin dynamics and valence-band spin excitations in two-dimensional hole systems
Creators: name: Korn, Tobias
name: Schueller, Christian
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: electronic excitations; inelastic light scattering; spin dynamics; two-dimensional hole systems
subject: 530 Physik

description: In recent years, the spin dynamics and spin–orbit interaction in GaAs-based two-dimensional hole systems (2DHS) have created a lot of attention. This is due to the complex structure of the valence band, with its p-like character, which leads to strong spin–orbit coupling. In this paper, we review our recent studies on hole spin dynamics and valence-band spin excitations in GaAs-based, p-modulation-doped quantum wells (QWs). In 2DHS with low carrier concentration, we demonstrate that maximizing the heavy-hole–light-hole band splitting by changing the QW width leads to long hole spin dephasing times at low temperatures. Different mechanisms for initializing a resident hole spin polarization by optical excitation are presented. To accurately determine hole spin dynamics parameters, the resonant spin amplification technique is utilized. The strong anisotropy of the hole g factor, and electrical g factor control are investigated, using this technique. In highly doped 2DHS, we use resonant inelastic light scattering (RILS) to study the spin splitting of the valence band. We observe a low-energy spin-density excitation (SDE), which is a measure of the spin splitting of the hole ground state. By varying the laser energy in the RILS experiment, we can resonantly probe the k dependence of the spin splitting. The spectral shape of the SDE depends on the orientation of the light polarizations relative to the crystal axes and reflects the in-plane anisotropy of the valence-band spin splitting.
title: A critical realist approach to understanding the human resource management
      practices-organizational financial performance link
title: evidence from Nigeria's petroleum sector
titleType: Subtitle
Creators: name: Ukpai, Ukpai Iro
Publisher: name: Lancaster University
Year: 2019
Subjects: Critical Realism
Human resource management (HRM)
meta-theory
organisational financial performance

description: Existing research on the HRM-P link has been unable to establish whether
      or not an HRM-P `link´ exists. Research reviewers have given factors such
      as inadequate theory, weak research design, and inappropriate methodology
      as responsible for the research problem. I argue that at the root of the
      problem is (a) a lack of theory underpinning research in the area, coupled
      with (b) a neglect of meta-theory. To overcome this, I integrate theories
      that may contribute to an explanation of the HRM-P `link´, and a
      meta-theory that might help gain some methodological clarity apropos data
      collection and data analysis. I argue for an alternative approach - a
      Critical Realist approach to solving the problem. Drawing mainly on
      Institutional approaches (comprising modified versions of Transaction Cost
      Economics theory, Social Exchange theory, Organisational Support theory,
      and the Resource-Based view; and Institutional theory) whose components
      constitute a newly developed integrated theoretical framework, I conduct
      empirical research to answer two questions, simply put: Is there a HRM-P
      `link´? ; If yes, what causal mechanisms mediate the link? Based then on a
      Critical Realist descriptive and interpretive crosssectional qualitative
      case study research design, survey data was collected by administering
      questionnaires on and interviewing employees and managers in a case study
      of three Nigeria-based petroleum companies with service capabilities. Data
      was analysed using an integration of existing Critical Realist data
      analysis frameworks with the core elements of a classical Grounded Theory
      data analysis technique. The empirical research finds that there is a
      HRM-P `link´, highlighting that human resource practices (HRPs) causally
      tend to influence organisational financial performance (OFP) and other HR
      outcomes. The causal mechanisms found operating to establish this `link´
      are eight mediating mechanisms combining and interpenetrating one another,
      stimulating the perceptions and emotions of human actors (starting from
      employees but also influencing managers and clients). These empirical
      findings are at variance with extant research which suggests that a system
      of HR practices (SHRP) influences employees through a single-path
      influence on their skills and motivation and on organisational structures
      or through only employees’ perceived organisational support. Contributions
      to HR management practice and theory and future research directions are
      also discussed.
Dissipation, Generalized Free Energy, and a Self-consistent Nonequilibrium Thermodynamics of Chemically Driven Open Subsystems
Creators: name: Ge, Hao
name: Qian, Hong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Nonequilibrium thermodynamics of a system situated in a sustained environment with influx and efflux is usually treated as a subsystem in a larger, closed "universe". It remains a question what the minimally required description for the surrounding of such an open driven system is, so that its nonequilibrium thermodynamics can be established solely based on the internal stochastic kinetics. We provide a solution to this problem using insights from studies of molecular motors in a chemical nonequilibrium steady state (NESS) with sustained external drive through a regenerating system, or in a quasi-steady state (QSS) with an excess amount of ATP, ADP, and Pi. We introduce the key notion of {\em minimal work} that is needed, $W_{min}$, for the external regenerating system to sustain a NESS ({\em e.g.}, maintaining constant concentrations of ATP, ADP and Pi for a molecular motor). Using a Markov (master-equation) description of a motor protein, we illustrate that the NESS and QSS have identical kinetics as well as the Second Law in terms of a same positive entropy production rate. The difference between the heat dissipation of a NESS and its corresponding QSS is exactly the $W_{min}$. This provides a justification for introducing an {\em ideal external regenerating system} and yields a {\em free energy balance equation} between the net free energy input $F_{in}$ and total dissipation $F_{dis}$ in an NESS: $F_{in}$ consists of chemical input minus mechanical output; $F_{dis}$ consists of dissipative heat; and the amount of useful energy becoming heat is the NESS entropy production. Furthermore, we show that for non-stationary systems, the $F_{dis}$ and $F_{in}$ correspond to the entropy production rate and housekeeping heat in stochastic thermodynamics, and identify a relative entropy $H$ as a generalized free energy.
description: 9 pages, 1 figure. In Physical Review E, 2013
title: Assessing the effects of higher immigration on the Canadian economy and inflation
Creators: name: Champagne, Julien
name: Ens, Erik
name: Guo, Xing
name: Kostyshyna, Olena
name: Lam, Alexander
name: Luu, Corinne
name: Miller, Sarah
name: Sabourin, Patrick
name: Slive, Joshua
name: Taskin, Temel
name: Trujillo, Jaime
name: Wee, Shu Lin
Publisher: name: Bank of Canada
Year: 2023

description: We assess the complex macroeconomic implications of Canada’s recent population increases. We find that newcomers significantly boost the non-inflationary, potential growth of the economy, but existing imbalances in the housing sector may be exacerbated. Greater housing supply is needed to complement the long-term economic benefits of population growth.
description: Nous évaluons les implications macroéconomiques complexes de la récente hausse démographique au Canada. Nous constatons que les nouveaux arrivants stimulent fortement la croissance potentielle non inflationniste de l’économie, mais que les déséquilibres déjà présents dans le secteur du logement pourraient être aggravés. L’offre de logements doit être accrue pour compléter les gains économiques à long terme découlant de la croissance de la population.
Spin polarization, dephasing, and photoinduced spin diffusion in (110)-grown two-dimensional electron systems
Creators: name: Voelkl, Roland
name: Schwemmer, Markus
name: Griesbeck, Michael
name: Tarasenko, Sergey
name: Schuh, Dieter
name: Wegscheider, Werner
name: Schueller, Christian
name: Korn, Tobias
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 530 Physik
subject: 75.40.Gb, 85.75.−d, 73.61.Ey

description: We study the optically induced spin polarization, spin dephasing, and diffusion in several high-mobility two-dimensional electron systems, which are embedded in GaAs quantum wells grown on (110)-oriented substrates. The experimental techniques comprise a two-beam magneto-optical spectroscopy system and polarization-resolved photoluminescence. Under weak excitation conditions at liquid-helium temperatures, we observe spin lifetimes above 100 ns in one of our samples, which are reduced with increasing excitation density due to additional, hole-mediated, spin dephasing. The spin dynamic is strongly influenced by the carrier density and the ionization of remote donors, which can be controlled by temperature and above-barrier illumination. The absolute value of the average electron spin polarization in the samples is directly observable in the circular polarization of photoluminescence collected under circularly polarized excitation and reaches values of about 5%. Spin diffusion is studied by varying the distance between pump and probe beams in microspectroscopy experiments. We observe diffusion lengths above 100 μm and, at high excitation intensity, a nonmonotonic dependence of the spin polarization on the pump-probe distance.
Exploring the Local Determinants of Campground Utilization on National Forest Land
Creators: name: Shartaj, Mostafa
name: Suter, Jordan F.
name: Shartaj, Mostafa
name: Suter, Jordan F.
Publisher: name: Unknown
Year: 2020
Subjects: Community/Rural/Urban Development
Environmental Economics and Policy

description: Outdoor recreation demand has increased substantially in the Western United States in the last decade. We demonstrate how National Forest campground utilization varies in response to changes in population, per capita income, and unemployment in counties local to that campground. Our findings suggest that a 1 percent increase in per capita income reduces utilization by 0.08 to 0.09 percentage points. Moreover, an increase of 1 percentage point in the unemployment rate increases utilization by 0.3 to 0.6 percentage points. Overall, the results suggest that campground utilization is higher in areas that have seen declines in macroeconomic conditions.
Global Linear Complexity Analysis of Filter Keystream Generators
Creators: name: Fúster-Sabater, A.
name: Caballero-Gil, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: An efficient algorithm for computing lower bounds on the global linear complexity of nonlinearly filtered PN-sequences is presented. The technique here developed is based exclusively on the realization of bit wise logic operations, which makes it appropriate for both software simulation and hardware implementation. The present algorithm can be applied to any arbitrary nonlinear function with a unique term of maximum order. Thus, the extent of its application for different types of filter generators is quite broad. Furthermore, emphasis is on the large lower bounds obtained that confirm the exponential growth of the global linear complexity for the class of nonlinearly filtered sequences.
Accelerating the CM method
Creators: name: Sutherland, Andrew V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11Y16 (Primary) 11G15, 11G20, 14H52 (Secondary)

description: Given a prime q and a negative discriminant D, the CM method constructs an elliptic curve E/\Fq by obtaining a root of the Hilbert class polynomial H_D(X) modulo q. We consider an approach based on a decomposition of the ring class field defined by H_D, which we adapt to a CRT setting. This yields two algorithms, each of which obtains a root of H_D mod q without necessarily computing any of its coefficients. Heuristically, our approach uses asymptotically less time and space than the standard CM method for almost all D. Under the GRH, and reasonable assumptions about the size of log q relative to |D|, we achieve a space complexity of O((m+n)log q) bits, where mn=h(D), which may be as small as O(|D|^(1/4)log q). The practical efficiency of the algorithms is demonstrated using |D| > 10^16 and q ~ 2^256, and also |D| > 10^15 and q ~ 2^33220. These examples are both an order of magnitude larger than the best previous results obtained with the CM method.
description: 36 pages, minor edits, to appear in the LMS Journal of Computation and Mathematics
The role of rotational hand movements and general motor ability in children’s mental rotation performance
Creators: name: Jansen, Petra
name: Kellner, Jan Peter Florian
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Children, mental rotation, motor processes, Motor abilities, interference
subject: 150 Psychologie

description: Mental rotation of visual images of body parts and abstract shapes can be influenced by simultaneous motor activity. Children in particular seem to have a strong coupling between motor and cognitive processes. We investigated the influence of a rotational hand movement performed by rotating a knob on mental rotation performance in primary school-age children (N= 83; Age range: 7.0-8.3 and 9.0-10.11 years). In addition, we assessed the role of motor ability in this relationship. Boys in the 7-8-year-old group were faster when mentally and manually rotating in the same direction than in the opposite direction. For girls and older children this effect was not found. A positive relationship was found between motor ability and accuracy on the mental rotation task: stronger motor ability related to improved mental rotation performance. In both age groups, children with more advanced motor abilities were more likely to adopt motor processes to solve mental rotation tasks if the mental rotation task was primed by a motor task. Our evidence supports the idea that an overlap between motor and visual cognitive processes in children is influenced by motor ability.
Evolution and Distribution of Magnetic Fields from AGNs in Galaxy Clusters. I. The Effect of Injection Energy and Redshift
Creators: name: Xu, Hao
name: Li, Hui
name: Collins, David C.
name: Li, Shengtai
name: Norman, Michael L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a series of cosmological magnetohydrodynamic (MHD) simulations that simultaneously follow the formation of a galaxy cluster and evolution of magnetic fields ejected by an Active Galactic Nucleus (AGN). Specifically, we investigate the influence of both the epoch of AGN (z $\sim$ 3-0.5) and the AGN energy ($\sim$ 3 $\times$ 10$^{57}$ - 2 $\times$ 10$^{60}$ ergs)on the final magnetic field distribution in a relatively massive cluster (M$_{vir}$ $\sim$10$^{15}$ M$_\odot$). We find that as long as the AGN magnetic fields are ejected before the major mergers in the cluster formation history, magnetic fields can be transported throughout the cluster and can be further amplified by the intra-cluster medium (ICM) turbulence cause by hierarchical mergers during the cluster formation process. The total magnetic energy in the cluster can reach $\sim$ $10^{61}$ ergs, with micro Gauss fields distributed over $\sim$ Mpc scale. The amplification of the total magnetic energy by the ICM turbulence can be significant, up to $\sim$1000 times in some cases. Therefore even weak magnetic fields from AGNs can be used to magnetize the cluster to the observed level. The final magnetic energy in the ICM is determined by the ICM turbulent energy, with a weak dependence on the AGN injection energy. We discuss the properties of magnetic fields throughout the cluster and the synthetic Faraday rotation measure maps they produce. We also show that high spatial resolution over most of the magnetic regions of the cluster is very important to capture the small scale dynamo process and maintain the magnetic field structure in our simulations.
description: 38 pages, 18 figures, Accepted for publication in ApJ
Secret Sharing Based on a Hard-on-Average Problem
Creators: name: Caballero-Gil, P.
name: Hernández-Goya, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The main goal of this work is to propose the design of secret sharing schemes based on hard-on-average problems. It includes the description of a new multiparty protocol whose main application is key management in networks. Its unconditionally perfect security relies on a discrete mathematics problem classiffied as DistNP-Complete under the average-case analysis, the so-called Distributional Matrix Representability Problem. Thanks to the use of the search version of the mentioned decision problem, the security of the proposed scheme is guaranteed. Although several secret sharing schemes connected with combinatorial structures may be found in the bibliography, the main contribution of this work is the proposal of a new secret sharing scheme based on a hard-on-average problem, which allows to enlarge the set of tools for designing more secure cryptographic applications.
A Consistency Proof for Some Restrictions of Tait's Reflection Principles
Creators: name: McCallum, Rupert
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03E55

description: A new large-cardinal property is introduced which enables one to give a relative consistency proof of restricted versions of the reflection principles discussed by Tait in his essay "Constructing Cardinals from Below".
Automation of one-loop QCD corrections
Creators: name: Hirschi, Valentin
name: Frederix, Rikkert
name: Frixione, Stefano
name: Garzelli, Maria Vittoria
name: Maltoni, Fabio
name: Pittau, Roberto
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the complete automation of the computation of one-loop QCD corrections, including UV renormalization, to an arbitrary scattering process in the Standard Model. This is achieved by embedding the OPP integrand reduction technique, as implemented in CutTools, into the MadGraph framework. By interfacing the tool so constructed, which we dub MadLoop, with MadFKS, the fully automatic computation of any infrared-safe observable at the next-to-leading order in QCD is attained. We demonstrate the flexibility and the reach of our method by calculating the production rates for a variety of processes at the 7 TeV LHC.
description: 64 pages, 12 figures. Corrected the value of m_Z in table 1. In table 2, corrected the values of cross sections in a.4 and a.5 (previously computed with mu=mtop/2 rather than mu=mtop/4). In table 2, corrected the values of NLO cross sections in b.3, b.6, c.3, and e.7 (the symmetry factor for a few virtual channels was incorrect). In sect. A.4.3, the labeling of the four-momenta was incorrect
Elimination of vacancies in titanium monoxide under high pressure in combination with high temperature
Creators: name: Valeeva, A. A.
name: Rempel, A. A.
name: Pfitzner, Arno
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: XRD; Non-stoichiometry; Structural vacancy; Vacancy elimination
subject: 540 Chemie

description: The material design with controlled structure was performed on titanium monoxide with structural vacancies on both sublattices. The polycrystalline powder of disordered titanium monoxide TiO0.98 with B1 structure was subjected to high pressures up to 60 kbar and high temperatures up to 2273 K. The X-ray powder diffraction of as-prepared and treated powders revealed cubic single-phase crystals. The lattice constant of this phase increased from 417.6(3) to 418.5(3) pm due to decreasing vacancy concentration on the titanium sublattice from 13.3 to 8.5 at.% after a highest pressure-highest temperature treatment for 1 h.
Implementing and Operating a State Meat Inspection Program: Potential Opportunity in New Mexico
Creators: name: Parker-Sedillo, Lenora
name: Robinson, Chadelle
name: Lillywhite, Jay
name: Parker-Sedillo, Lenora
name: Robinson, Chadelle
name: Lillywhite, Jay
Publisher: name: Unknown
Year: 2020
Subjects: Agricultural and Food Policy
Livestock Production/Industries

description: New Mexico stakeholders expressed interest in a state meat inspection program. Stakeholders recognize that a state inspection program could provide access to local markets for livestock, increase locally produced meat, provide economic development opportunities, and alleviate supply chain concerns. A study at New Mexico State University explored the potential costs of implementing a state meat inspection program. This article summarizes interviews of 22 state officials operating meat inspection programs and 25 existing meat processors in New Mexico about interest to participate. Researchers estimated the state program would have an annual cost of $1.1 million with additional costs expected as the program develops and grows.
title: "Rilievi con Vittoria alata e offerenti", arte romana, inv. CXCa (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Ciccarello, Giulia
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description: Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di

Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
Reply to "Comment on `Quenches in quantum many-body systems: One-dimensional Bose-Hubbard model reexamined' ''
Creators: name: Roux, Guillaume
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In his Comment [see preceding Comment, Phys. Rev. A 82, 037601 (2010)] on the paper by Roux [Phys. Rev. A 79, 021608(R) (2009)], Rigol argued that the energy distribution after a quench is not related to standard statistical ensembles and cannot explain thermalization. The latter is proposed to stem from what he calls the eigenstate thermalization hypothesis and which boils down to the fact that simple observables are expected to be smooth functions of the energy. In this Reply, we show that there is no contradiction or confusion between the observations and discussions of Roux and the expected thermalization scenario discussed by Rigol. In addition, we emphasize a few other important aspects, in particular the definition of temperature and the equivalence of ensemble, which are much more difficult to show numerically even though we believe they are essential to the discussion of thermalization. These remarks could be of interest to people interested in the interpretation of the data obtained on finite-size systems.
description: 3 pages
Alleviating $\Lambda$CDM tension in Pantheon in late time quantum cosmology
Creators: name: Putten, Maurice H.P.M. Van
Publisher: name: Zenodo
Year: 2019
Subjects: Hubble parameter dark energy quantum gravity

description: Surveys of the Local Universe show a Hubble expansion significantly greater than $\Lambda$CDM estimates from the Cosmic

Microwave Background by Planck. This may present a challenge to our application of general relativity to cosmology.

Such tensions are expected in quantum cosmology, wherein de Sitter space is unstable by dark energy from the cosmological

horizon ${\cal H}$. We report on a novel probe of late time cosmology in terms of matter density $\omega_m$ estimated over inner intervals $[0,z_{\max}]$. Independent of Planck, Pantheon data over $0<z_{\max}\le2.26$ are found to exclude $\Lambda$CDM by

over $4\sigma$. In quantum cosmology, this reduces to $3.1\sigma$.
description: Follow-up to "H0 tension in Swampland: theory confronts reality", Nov 28-30, 2018, APCTP, Pohang
Shape Influence on Consumers’ Willingness to Purchase Jujube Fruit
Creators: name: Hayes, Taylor E.
name: Robinson, Chadelle
name: Acharya, Ram
name: Flores, Nancy
name: Yao, Shengrui
name: Hayes, Taylor E.
name: Robinson, Chadelle
name: Acharya, Ram
name: Flores, Nancy
name: Yao, Shengrui
Publisher: name: Unknown
Year: 2020
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Agricultural producers diversify their operations to reduce vulnerabilities to market and weather fluctuations. Agriculture producers in New Mexico often search for profitable, water efficient alternative crops and have shown interest in jujube fruit. A sensory evaluation determined consumer preferences of dried jujube based solely on the shape of the sample. An ordered probit regression model analyzed the data to determine the willingness to purchase. The analysis showed more than half of the participants were overall likely to purchase and had a clear preference for the circular shaped sample jujube fruit. This evidence supports jujube as a successful alternative crop.
Spin dephasing and phtoinduced spin diffusion in a high-mobility two-dimensional electron system embedded in a GaAs-(Al,Fa)As quantum well grown in the [110] direction
Creators: name: Voelkl, Roland
name: Griesbeck, Michael
name: Tarasenko, Sergey
name: Schuh, Dieter
name: Wegscheider, Werner
name: Schueller, Christian
name: Korn, Tobias
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: 530 Physik
subject: 75 . 40 . Gb, 85 . 75 . − d, 73 . 61 . Ey

description: We have studied spin dephasing and spin diffusion in a high-mobility two-dimensional electron system, embedded in a GaAs/AlGaAs quantum well grown in the [110] direction, by a two-beam Hanle experiment. For very low excitation density, we observe spin lifetimes of more than 16 ns, which rapidly decrease as the pump intensity is increased. Two mechanisms contribute to this decrease: The optical excitation produces holes, which lead to a decay of electron spin via the Bir-Aronov-Pikus mechanism and recombination with spin-polarized electrons. By scanning the distance between the pump and probe beams, we observe the diffusion of spin-polarized electrons over more than 20 μm. For high pump intensity, the spin polarization in a distance of several micrometers from the pump beam is larger than at the pump spot, due to the reduced influence of photogenerated holes.
Fingerprints of the Anisotropic Spin-Split Hole Dispersion in Resonant Inelastic Light Scattering in Two-Dimensional Hole Systems
Creators: name: Hirmer, Michael
name: Hirmer, Marika
name: Schuh, Dieter
name: Wegscheider, Werner
name: Korn, Tobias
name: Winkler, R.
name: Schueller, Christian
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: 530 Physik
subject: 73.20.Mf, 73.21.Fg, 73.61.Ey, 78.30.-j

description: In resonant inelastic light scattering experiments on two-dimensional hole systems in GaAs−AlxGa1−xAs single quantum wells we find evidence for the strongly anisotropic spin-split hole dispersion at finite in-plane momenta. In all our samples we detect a low-energy spin-density excitation of a few meV, stemming from excitation of holes of the spin-split ground state. The detailed spectral shape of the excitation depends sensitively on the orientations of the linear light polarizations with respect to the in-plane crystal axes. In particular, we observe a doublet structure, which is most pronounced if the polarization of the incident light is parallel to the [110] in-plane direction. Theoretical calculations of the Raman spectra based on a multiband k⋅p approach confirm that the observed doublet structure is due to the anisotropic spin-split hole dispersion.
Bisimulations Meet PCTL Equivalences for Probabilistic Automata
Creators: name: Song, Lei
name: Zhang, Lijun
name: Godskesen, Jens Chr.
name: Nielson, Flemming
Publisher: name: arXiv
Year: 2011
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Probabilistic automata (PAs) have been successfully applied in formal verification of concurrent and stochastic systems. Efficient model checking algorithms have been studied, where the most often used logics for expressing properties are based on probabilistic computation tree logic (PCTL) and its extension PCTL^*. Various behavioral equivalences are proposed, as a powerful tool for abstraction and compositional minimization for PAs. Unfortunately, the equivalences are well-known to be sound, but not complete with respect to the logical equivalences induced by PCTL or PCTL*. The desire of a both sound and complete behavioral equivalence has been pointed out by Segala in 1995, but remains open throughout the years. In this paper we introduce novel notions of strong bisimulation relations, which characterize PCTL and PCTL* exactly. We extend weak bisimulations that characterize PCTL and PCTL* without next operator, respectively. Further, we also extend the framework to simulation preorders. Thus, our paper bridges the gap between logical and behavioral equivalences and preorders in this setting.
description: Long version of CONCUR'11 with the same title: added extension to simulations, countable states
Supplementary Tables and Figures for the LID genetic study
Creators: name: Martinez, Alejandro
Publisher: name: Zenodo
Year: 2023
Subjects: Supplement

description: This is the zip folder where we store the supplementary materials generated for the genetic study of LID
description: Code and main result data associated with this supplementary data CODE DOI: https://doi.org/10.5281/zenodo.7802142 MAIN RESULT DOI: https://doi.org/10.5281/zenodo.7795604
Simultaneous-source seismic data acquisition and processing with compressive sensing
Creators: name: Wason, Haneet
Publisher: name: University of British Columbia
Year: 2017

description: The work in this thesis adapts ideas from the field of compressive sensing (CS) that lead to new insights into acquiring and processing seismic data, where we can fundamentally rethink how we design seismic acquisition surveys and process acquired data to minimize acquisition- and processing-related costs. Current efforts towards dense source/receiver sampling and full azimuthal coverage to produce high-resolution images of the subsurface have led to the deployment of multiple sources across survey areas. A step ahead from multisource acquisition is simultaneous-source acquisition, where multiple sources fire shots at near-simultaneous/random times resulting in overlapping shot records, in comparison to no overlaps during conventional sequential-source acquisition. Adoption of simultaneous-source techniques has helped to improve survey efficiency and data density. The engine that drives simultaneous-source technology is simultaneous-source separation — a methodology that aims to recover conventional sequential-source data from simultaneous-source data. This is essential because many seismic processing techniques rely on dense and periodic (or regular) source/receiver sampling. We address the challenge of source separation through a combination of tailored simultaneous-source acquisition design and sparsity-promoting recovery via convex optimization using l1 objectives. We use CS metrics to investigate the relationship between marine simultaneous-source acquisition design and data reconstruction fidelity, and consequently assert the importance of randomness in the acquisition system in combination with an appropriate choice for a sparsifying transform (i.e., curvelet transform) in the reconstruction algorithm. We also address the challenge of minimizing the cost of expensive, dense, periodically-sampled and replicated time-lapse surveying and data processing by adapting ideas from distributed compressive sensing. We show that compressive randomized time-lapse surveys need not be replicated to attain acceptable levels of data repeatability, as long as we know the shot positions (post acquisition) to a sufficient degree of accuracy. We conclude by comparing sparsity-promoting and rank-minimization recovery techniques for marine simultaneous-source separation, and demonstrate that recoveries are comparable; however, the latter approach readily scales to large-scale seismic data and is computationally faster.
Hole spin dynamics and hole g factor anisotropy in coupled quantum well systems
Creators: name: Gradl, Christian
name: Kempf, Michael
name: Schuh, Dieter
name: Bougeard, Dominique
name: Winkler, R.
name: Schueller, Christian
name: Korn, Tobias
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 530 Physik
subject: 78.67.De, 78.55.Cr, 78.47.D−

description: Due to its p-like character, the valence band in GaAs-based heterostructures offers rich and complex spin-dependent phenomena. One manifestation is the large anisotropy of Zeeman spin splitting. Using undoped, coupled quantum wells (QWs), we examine this anisotropy by comparing the hole-spin dynamics for high- and low-symmetry crystallographic orientations of the QWs. We directly measure the hole g factor via time-resolved Kerr rotation, and for the low-symmetry crystallographic orientations (110) and (113a), we observe a large in-plane anisotropy of the hole g factor, in good agreement with our theoretical calculations. Using resonant spin amplification, we also observe an anisotropy of the hole-spin dephasing in the (110)-grown structure, indicating that crystal symmetry may be used to control hole-spin dynamics.
On the Design of Cryptographic Primitives
Creators: name: Caballero-Gil, Pino
name: Fúster-Sabater, Amparo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The main objective of this work is twofold. On the one hand, it gives a brief overview of the area of two-party cryptographic protocols. On the other hand, it proposes new schemes and guidelines for improving the practice of robust protocol design. In order to achieve such a double goal, a tour through the descriptions of the two main cryptographic primitives is carried out. Within this survey, some of the most representative algorithms based on the Theory of Finite Fields are provided and new general schemes and specific algorithms based on Graph Theory are proposed.
Intersections of quadrics, moment-angle manifolds, and Hamiltonian-minimal Lagrangian embeddings
Creators: name: Mironov, Andrey
name: Panov, Taras
Publisher: name: arXiv
Year: 2011
Subjects: subject: Symplectic Geometry (math.SG)
subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study the topology of Hamiltonian-minimal Lagrangian submanifolds N in C^m constructed from intersections of real quadrics in a work of the first author. This construction is linked via an embedding criterion to the well-known Delzant construction of Hamiltonian toric manifolds. We establish the following topological properties of N: every N embeds as a submanifold in the corresponding moment-angle manifold Z, and every N is the total space of two different fibrations, one over the torus T^{m-n} with fibre a real moment-angle manifold R, and another over a quotient of R by a finite group with fibre a torus. These properties are used to produce new examples of Hamiltonian-minimal Lagrangian submanifolds with quite complicated topology.
description: 14 pages, published version (minor changes)
Inelastic light-scattering from spin-density excitations in the regime of the persistent spin helix in a GaAs-AlGaAs quantum well
Creators: name: Schoenhuber, Christoph
name: Walser, M. P.
name: Salis, Gian
name: Reichl, C.
name: Wegscheider, Werner
name: Korn, Tobias
name: Schueller, Christian
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 530 Physik
subject: 73.20.Mf, 73.21.Fg, 73.61.Ey, 78.30.−j

description: We have investigated the intrasubband spin-density excitation (SDE) in an asymmetrically doped GaAs-AlGaAs single quantum well with balanced Rashba and Dresselhaus spin-orbit interaction strengths by inelastic light scattering. For this unique symmetry, the combined spin-orbit field is either parallel or antiparallel to the [11¯0] in-plane direction of the quantum well for all wave vectors of the two-dimensional reciprocal space. In backscattering geometry, the SDE is formed by spin-flip intrasubband transitions of the spin-split subband. Via the splitting of the intrasubband SDE, we have directly detected the spin splitting of the conduction band due to the anisotropic spin-orbit field. As expected, the splitting is nonzero if a wave vector is transferred perpendicular to the direction of the spin-orbit field and close to zero for a parallel wave-vector transfer. The extracted values for the spin-orbit strength and for the wavelength of a persistent spin helix compare well with results of previous experiments of direct spatial mapping of the spin helix.