cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Chandra Survey of Early-Type Galaxies, I: Metal Enrichment in the ISM
Creators: name: Humphrey, Philip J.
name: Buote, David A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first in a series of papers studying the X-ray properties of 28 early type galaxies spanning ~3 orders of magnitude in L_x. We report emission-weighted constraints for Fe, O, Ne, Mg, Si, S and Ni. We find no evidence of the very sub-solar Z_Fe historically reported, confirming a trend in recent X-ray observations of bright galaxies and groups, nor do we find Z_Fe correlates with L_x. In general we find no evidence for multi-phase ISM, indicating multi-temperature fits found with ASCA were due to temperature gradients Chandra can resolve. We compare the stellar Z_Fe, estimated from simple stellar population model fits, to Z_Fe(ISM). Excepting one possible outlier we find no evidence that the gas is much more metal-poor than the stars and, in a few systems Z_Fe(ISM) is higher. In general the two exhibit similar Z_Fe, which is inconsistent with both galactic wind models and recent hierarchical chemical enrichment simulations. Adopting standard SNIa and SNII metal yields our abundance ratio constraints imply 66+/-11% of the Fe within the ISM was produced in SNIa, similar to the Solar neighbourhood and implying similar enrichment histories for the ISM in a spiral and in elliptical galaxies. Although these values are sensitive to systematic uncertainties in the SN yields, they are in good agreement with observations of more massive systems, indicating remarkable homology in the enrichment process operating from cluster scales to low-to-intermediate L_x galaxies. The data also uniformly exhibit the low Z_O/Z_Mg abundance ratios which have been reported in some other systems. This is inconsistent with metal-production calculations in SNII and may indicate an additional source of enrichment, such as Population III hypernovae.(abridged)
description: Accepted for publication in the Astrophysical Journal. 23 pages, 6 figures. Mostly minor changes to match published version. Expanded correlation discussion. Conclusions unchanged
EXPLORING WITH DYNAMIC RELATIONSHIP BETWEEN ADVERTISING AND REVENUES WITHIN THE PORK INDUSTRY
Creators: name: Hyde, Jeffrey
name: Foster, Kenneth A.
name: Hyde, Jeffrey
name: Foster, Kenneth A.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: pork
subject: advertising
subject: VAR

description: This research tests for causality between indexed retail pork revenues and pork advertising. Evidence was found of feedback between revenues and total pork advertising, but not between revenues and generic advertising. In fact, generic advertising was found to have no significant impact on indexed retail pork revenues.
Hummer, Franz (Hrsg.), Orthodoxie und Vaticanum II
Creators: name: Schaeder, Hildegard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 2 (1967): Ökumenische Rundschau, Band 16, Heft 2
Emdogain[R] interaction with extracellular matrix proteins and their effects on cell adhesion, spreading and migration
Creators: name: Narani, Nazanin
Publisher: name: University of British Columbia
Year: 2009

description: Studies over the past twenty years have demonstrated that the cells of Hertwig's epithelial root sheath secrete enamel matrix proteins and that these proteins are involved in the formation of acellular extrinsic fiber cementum during development and regeneration of periodontal tissues (Slavkin and Boyde, 1975; Hammarstrom et al., 1997b). However, the cellular and molecular mechanisms involved in the process of periodontal regeneration induced by enamel matrix proteins are poorly understood. This in vitro study was designed to investigate Emdogain's interaction with extracellular matrix (ECM) proteins and regulation of adhesion, spreading and migration of epithelial cells and periodontal ligament fibroblasts. We examined the binding interaction between Emdogain and the ECM proteins, fibronectin; collagen types I and IV; and laminin I using ELISA. Binding of Emdogain to fibronectin and collagen type I (10 µg/ml) was inversely related to Emdogain coating concentration and resulting precipitation. That is, fibronectin and collagen type I bound to non-precipitated Emdogain and precipiation of Emdogain at higher concentrations did not bind fibronectin or collagen type I. Type IV collagen and laminin I did not bind to any concentration of Emdogain-coated surfaces. Epithelial cells plated on Emdogain-coated surfaces (1-30,000 µg/ml) in the presence of cylcoheximide, showed minimal adhesion (5%) compared to type I collagen-coated surfaces (positive control) and no spreading was found at 2 hours. When fibronectin or collagen type I (10 µg/ml) was used along with Emdogain, epithelial cell adhesion was significantly enhanced (3-5 fold higher compared to Emdogain alone). PDL fibroblast adhesion and spreading on Emdogain (1-30,000 µg/ml) was concentration-dependent with the maximum adhesion and spreading on 10,000 µg/ml (40% and 10% of positive control at 2 hours, respectively). Fibronectin or collagen type I (10 µg/ml) used along with Emdogain for surface coating enhanced adhesion to a level that was comparable with positive control. Cell spreading was also improved and reached 30% compared to 70% on positive control. Collectively these data indicate that Emdogain supports adhesion and spreading of PDL fibroblasts but not epithelial cells. Addition of ECM proteins enhances cell binding to Emdogain that is more significant for PDL fibroblasts compared to epithelial cells.
Extending the Multiple Traveling Salesman Problem for Scheduling a Fleet of Drones Performing Monitoring Missions
Creators: name: Rigas, Emmanouil
name: Kolios, Panayiotis
name: Ellinas, Georgios
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper we schedule the travel path of a set of drones across a graph where the nodes need to be visited multiple times at pre-defined points in time. This is an extension of the well-known multiple traveling salesman problem. The proposed formulation can be applied in several domains such as the monitoring of traffic flows in a transportation network, or the monitoring of remote locations to assist search and rescue missions. Aiming to find the optimal schedule, the problem is formulated as an Integer Linear Program (ILP). Given that the problem is highly combinatorial, the optimal solution scales only for small sized problems. Thus, a greedy algorithm is also proposed that uses a one-step look ahead heuristic search mechanism. In a detailed evaluation, it is observed that the greedy algorithm has near-optimal performance as it is on average at 92.06% of the optimal, while it can potentially scale up to settings with hundreds of drones and locations.
description: To appear in the 23rd IEEE International Conference on Intelligent Transportation Systems
X-ray Luminosity and Absorption Column Fluctuations in the H2O Maser Galaxy NGC 4258 from Weeks to Years
Creators: name: Fruscione, Antonella
name: Greenhill, Lincoln J.
name: Filippenko, Alexei V.
name: Moran, James M.
name: Herrnstein, James R.
name: Galle, Elizabeth
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report monitoring of the 0.3-10 keV spectrum of NGC4258 with XMM over 1.5 years.We als o report reprocessing of an overlapping series of archival Chandra observations. By including earlier ASCA and SAX observations, we present a new, nine-year time series of models fit to the X-ray spectrum of NGC4258. Over the nine years, the photoelectric absorbing column (~10^23 cm^-2) did not vary detectably, except for a ~40% drop between two ASCA epochs separated by 3 years and a ~60% rise between two XMM epochs separated by just 5 months. In contrast, factor of 2-3 changes are seen in absorbed flux on the timescale of years. These are uncorrelated with changes in absorbing column and indicative of central engine variability. The most rapid change in luminosity (5-10 keV) that we detect is ~30% over 19 days. The warped disk, a known source of H2O maser emission in NGC4258, is believed to cross the line of sight to the central engine. We propose that the variations in absorbing column arise from inhomogeneities sweeping across the line of sight in the rotating disk at the radius where the disk crosses the line of sight. We estimate that the inhomogeneities are ~10^15 cm in size at the crossing radius of 0.29 pc, slightly smaller than the expected scale height of the disk. This result thus provides strong evidence that the warped accretion disk is the absorber. This is the first direct confirmation that obscuration in type-2 AGN may, in some cases, arise in thin, warped accretion disks, rather than in geometrically thick tori. We do not detect Fe Kalpha line emission in any of our XMM spectra. We do not observe evidence of absorption lines in the XMM or reprocessed Chandra data.
description: 36 pages,14 figures. Accepted for publication in ApJ
Relaxation timescales and electron-phonon coupling in optically-pumped YBa$_2$Cu$_3$O$_{6+x}$ revealed by time-resolved Raman scattering
Creators: name: Pellatz, N.
name: Roy, S.
name: Lee, J-W.
name: Schad, J. L.
name: Kandel, H.
name: Arndt, N.
name: Eom, C. B.
name: Kemper, A. F.
name: Reznik, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Time resolved measurements provide a new way to disentangle complex interactions in quantum materials due to their different timescales. We used pump-probe Raman scattering to investigate the apical oxygen vibration in YBa$_2$Cu$_3$O$_{6+x}$ under nonequilibrium conditions. Time-dependence of the phonon population demonstrated strong electron-phonon coupling. Most importantly, the phonon shifts to a higher energy due to transient smearing of the Fermi surface in a remarkable agreement with diagrammatic theory. We also discuss new insights into photoinduced superconductivity reported at lower doping that follow from these results.
description: New expanded version including analysis and comparison of phonon softening to diagrammatic theory
SHADOW PRICE OF ENVIRONMENTAL BADS: WEAK VS. STRONG DISPOSABILITY
Creators: name: Shaik, Saleem
name: Helmers, Glenn A.
name: Shaik, Saleem
name: Helmers, Glenn A.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: Shadow prices
subject: Weak
subject: Strong Disposability
subject: Environmental Bads

description: This paper addresses the issue of the shadow price of environmental bads treated as an undesirable output (normal input) with weak (strong) disposability in a two-stage estimation. Nebraska agriculture sector time series data used is spread over 1936-94. Results indicate the difference in the price due to the disposability property.
ENDOGENOUS ON-SITE TIME IN THE RECREATION DEMAND MODEL
Creators: name: Berman, Matthew D.
name: Kim, Hong Jin
name: Berman, Matthew D.
name: Kim, Hong Jin
Publisher: name: Unknown
Year: 1999
Subjects: Research Methods/ Statistical Methods
Resource /Energy Economics and Policy

description: Careful modeling of on-site time may substantially improve estimates of the benefits of recreational visits using the travel cost method, especially when on-site time is endogenous. This paper reviews the theory of endogenous on-site time, and shows how the theory may apply to the Random Utility Model (RUM). An empirical example of sport fishing in Southcentral Alaska under varying specifications of on-site time is presented.
Pointwise periodic maps with quantized first integrals
Creators: name: Cima, Anna
name: Gasull, Armengol
name: Mañosa, Víctor
name: Mañosas, Francesc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: Primary: 37C25, 39A23. Secondary: 37C55, 37J35, 52C20

description: We describe the global dynamics of some pointwise periodic piecewise linear maps in the plane that exhibit interesting dynamic features. For each of these maps we find a first integral. For these integrals the set of values are discrete, thus quantized. Furthermore, the level sets are bounded sets whose interior is formed by a finite number of open tiles of certain regular or uniform tessellations. The action of the maps on each invariant set of tiles is described geometrically.
description: 46 pages, 20 figures
THE IMPLICATION OF PROPERTY RIGHTS FOR JOINT AGRICULTURE-TIMBER PRODUCTIVITY IN THE BRAZILIAN AMAZON
Creators: name: Otsuki, Tsunehiro
name: Reis, Eustaquio Jose
name: Otsuki, Tsunehiro
name: Reis, Eustaquio Jose
Publisher: name: Unknown
Year: 1999
Subjects: subject: Land Economics/Use
subject: Resource /Energy Economics and Policy
subject: Technical efficiency
subject: property rights
subject: DEA
subject: two-stage procedure

description: This paper examines whether better property rights will increase joint productivity of agricultural and timber products in the Brazilian Amazon. Farrell output-based technical efficiency and technological progress measures are derived by using DEA (Data Envelopment Analysis) for Amazonian counties and are regressed on non-discretional variables such as land title. Land title is found to significantly improve the technical efficiency.
Modularizing the Elimination of r=0 in Kleene Algebra
Creators: name: Hardin, Christopher
Publisher: name: arXiv
Year: 2005
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.3.1

description: Given a universal Horn formula of Kleene algebra with hypotheses of the form r = 0, it is already known that we can efficiently construct an equation which is valid if and only if the Horn formula is valid. This is an example of elimination of hypotheses, which is useful because the equational theory of Kleene algebra is decidable while the universal Horn theory is not. We show that hypotheses of the form r = 0 can still be eliminated in the presence of other hypotheses. This lets us extend any technique for eliminating hypotheses to include hypotheses of the form r = 0.
Z' signal from the LEP2 data
Creators: name: Gulov, A. V.
name: Skalozub, V. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The many-parametric fit of the LEP2 data on e^+e^-\to e^+e^-, μ^+μ^-, τ^+τ^- processes is performed to estimate signals of the Abelian Z'-boson beyond the standard model. The model-independent relations between the Z' couplings to the standard model particles allow to describe the Z' effects in lepton processes by 4 independent parameters. No signal is found by the complete LEP2 data set, and the 1.3σsignal is detected by the fit of the backward bins. The Z' couplings to the vector and axial-vector lepton currents are constrained. The comparisons with the one-parameter fits and with the LEP1 experiments are performed.
description: 6 pages, 2 figures, RevTeX. The paper was completely rewritten. The errors in the first version were eliminated. The comparison with the LEP1 data is added
Emission-line profile modelling of structured T Tauri magnetospheres
Creators: name: Symington, Neil H.
name: Harries, Tim J.
name: Kurosawa, Ryuichi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present hydrogen emission line profile models of magnetospheric accretion onto Classical T Tauri stars. The models are computed under the Sobolev approximation using the three-dimensional Monte Carlo radiative-transfer code TORUS. We have calculated four illustrative models in which the accretion flows are confined to azimuthal curtains - a geometry predicted by magneto-hydrodynamical simulations. Properties of the line profile variability of our models are discussed, with reference to dynamic spectra and cross-correlation images. We find that some gross characteristics of observed line profile variability are reproduced by our models, although in general the level of variability predicted is larger than that observed. We conclude that this excessive variability probably excludes dynamical simulations that predict accretion flows with low degrees of axisymmetry.
description: 14 pages, 12 figures. Published in MNRAS
The large-scale magnetic field of the eccentric pre-main-sequence binary system V1878 Ori
Creators: name: Lavail, Alexis
name: Kochukhov, Oleg
name: Hussain, Gaitee
name: Argiroffi, Costanza
name: Alecian, Evelyne
name: Morin, Julien
name: collaboration, the BinaMIcS
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report time-resolved, high-resolution optical spectropolarimetric observations of the young double-lined spectroscopic binary V1878 Ori. Our observations were collected with the ESPaDOnS spectropolarimeter at the Canada-France-Hawaii Telescope through the BinaMIcS large programme. V1878 Ori A and B are partially convective intermediate mass weak-line T Tauri stars on an eccentric and asynchronous orbit. We also acquired X-ray observations at periastron and outside periastron. Using the least-squares deconvolution technique (LSD) to combine information from many spectral lines, we clearly detected circular polarization signals in both components throughout the orbit. We refined the orbital solution for the system and obtained disentangled spectra for the primary and secondary components. The disentangled spectra were then employed to determine atmospheric parameters of the two components using spectrum synthesis. Applying our Zeeman Doppler imaging code to composite Stokes $IV$ LSD profiles, we reconstructed brightness maps and the global magnetic field topologies of the two components. We find that V1878 Ori A and B have strikingly different global magnetic field topologies and mean field strengths. The global magnetic field of the primary is predominantly poloidal and non-axisymmetric (with a mean field strength of 180 G). while the secondary has a mostly toroidal and axisymmetric global field (mean strength of 310 G). These findings confirm that stars with very similar parameters can exhibit radically different global magnetic field characteristics. The analysis of the X-ray data shows no sign of enhanced activity at periastron, suggesting the lack of strong magnetospheric interaction at this epoch.
description: 13 pages, 9 figures, accepted for publication in MNRAS
OPTIMAL REGULATION OF EUTROPHYING LAKES, FJORDS AND RIVERS IN THE PRESENCE OF THRESHOLD EFFECTS
Creators: name: Naevdal, Eric
name: Naevdal, Eric
Publisher: name: Unknown
Year: 1999
Subjects: subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: Eutrophication Thresholds

description: In a large number of practical environmental regulation problems, the damage done by pollutants depends on stocks and/or flows of pollutants exceeding certain thresholds. A typical example is eutrophication which occur when stocks of nutrients in a lake exceeds a certain threshold. The present paper presents a model of eutrophication that accounts for such thresholds. The paper does so by applying a novel technique in optimal control theory that allows for the analysis of systems where state-variables bounce back and forth over thresholds that take the form of functions of time and state-variables.
The change of Fermi surface topology in Bi2Sr2CaCu2O8 with doping
Creators: name: Kaminski, A.
name: Rosenkranz, S.
name: Fretwell, H. M.
name: Norman, M. R.
name: Randeria, M.
name: Campuzano, J. C.
name: Park, J-M.
name: Li, Z. Z.
name: Raffy, H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the observation of a change in Fermi surface topology of Bi2Sr2CaCu2O8 with doping. By collecting high statistics ARPES data from moderately and highly overdoped samples and dividing the data by the Fermi function, we answer a long standing question about the Fermi surface shape of Bi2Sr2CaCu2O8 close to the (pi,0) point. For moderately overdoped samples (Tc=80K) we find that both the bonding and antibonding sheets of the Fermi surface are hole-like. However for a doping level corresponding to Tc=55K we find that the antibonding sheet becomes electron-like. This change does not directly affect the critical temperature and therefore the superconductivity. However, since similar observations of the change of the topology of the Fermi surface were observed in LSCO and Bi2Sr2Cu2O6, it appears to be a generic feature of hole-doped superconductors. Because of bilayer splitting, though, this doping value is considerably lower than that for the single layer materials, which again argues that it is unrelated to Tc.
Handreichung zum Forschungsdatenmanagement (SUH, UB Hildesheim). Werkzeuge/Tools im FDM.
Creators: name: Strauch, Annette
Publisher: name: Zenodo
Year: 2020
Subjects: FDM
Forschungsdatenmanagement
eScience
Bibliotheken
Universitätsbibliotheken
RDMO

description: Unterstützung des aktiven Forschungsdatenmanagement durch "Tools".
Structure of exotic three-body systems
Creators: name: Frederico, T.
name: Yamashita, M. T.
name: Delfino, A.
name: Tomio, Lauro
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The classification of large halos formed by two identical particles and a core is systematically addressed according to interparticle distances. The root-mean-square distances between the constituents are described by universal scaling functions obtained from a renormalized zero-range model. Applications for halo nuclei, $^{11}$Li and $^{14}$Be, and for atomic $^4$He$_3$ are briefly discussed. The generalization to four-body systems is proposed.
description: Contribution to the International workshop "Critical Stability of Few-Body Quantum Systems". To be published in "Few-Body Systems"
Physics-based Modeling and Experimental Characterization of Endurance in Filamentary VCM ReRAM
Creators: name: Kopperberg, N.
name: Wiefels, Stefan
name: Hofmann, K.
name: Otterstedt, J.
name: Wouters, D. J.
name: Waser, R.
name: Menzel, Stephan
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: International Conference on Memristive Phenomena in Chalcogenides and Beyond (ICMP), Berchtesgaden, Germany, 22 May 2023 - 25 May 2023
Augmenting art history: a new story of the painted hand
Creators: name: Bernasconi, Valentine
Publisher: name: Zenodo
Year: 2022
Subjects: hand
digital art history
augmented reality

description: The use of computational methods within the field of art history is usually restricted to
 digitization and archiving tools, allowing the preservation of digital collections and their
 online access to the world. However, over the past decade, many projects have shown
 the possibility to use computer vision and machine learning methods to automate tasks
 on large corpuses of paintings and to better outline recurrent patterns. Unfortunately,
 these works are often overlooked by art historians who have limited access to these
 complex computational methods and might sometimes perceive them as an intrusion
 of the scientific methodology to their field. However, computer science has much more
 to offer than automated data processing and should not only be seen as a new
 methodological approach, but also as a door to new perceptions of artworks and
 artistic practice. Through a research project on computational and historical analysis of
 hands and gestures in early modern time, where different technologies are used to
 better grasp the many dimensions of the painted hand, the idea of the machine as a
 new agent in the relationship between paintings and art historians is envisioned. This
 exploration has many facets, one of which is the creation of an interactive tool to
 facilitate research on a large corpus of painted hands, directly using the hand gesture of
 the user as a query. Fostering a new understanding of painted hand gestures through
 computer vision, animations and enactment, the goal is to propose, through the eye of
 the machine, a new way of seeing.
Mutation equivalence of toric Landau-Ginzburg models
Creators: name: Prince, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14J33 (Primary), 14J45, 14M25 (Secondary)

description: Given a Fano complete intersection defined by sections of a collection nef line bundles $L_1,\ldots, L_c$ on a Fano toric manifold $Y$, a construction of Givental/Hori-Vafa provides a mirror-dual Landau-Ginzburg model. This construction depends on a choice of suitable nef partition; that is, a partition of the rays of the fan determined by $Y$. We show that toric Landau-Ginzburg models constructed from different nef partitions representing the same complete intersection are related by a volume preserving birational map. In particular, various Laurent polynomial mirrors which may be obtained from these Landau-Ginzburg models are mutation equivalent.
description: 11 pages
Hirschauer, Gerd, Der Katholizismus vor dem Risiko der Freiheit
Creators: name: Krüger
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 2 (1967): Ökumenische Rundschau, Band 16, Heft 2
Overall Evaluations on Benefits of Influence When Disturbed by Rivals
Creators: name: Guo, Jianxiong
name: Zhang, Yapu
name: Wu, Weili
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Influence maximization (IM) is a representative and classic problem that has been studied extensively before. The most important application derived from the IM problem is viral marketing. Take us as a promoter, we want to get benefits from the influence diffusion in a given social network, where each influenced (activated) user is associated with a benefit. However, there is often competing information initiated by our rivals diffusing in the same social network at the same time. Consider such a scenario, a user is influenced by both my information and my rivals' information. Here, the benefit from this user should be weakened to certain degree. How to quantify the degree of weakening? Based on that, we propose an overall evaluations on benefits of influence (OEBI) problem. We prove the objective function of the OEBI problem is not monotone, not submodular, and not supermodular. Fortunately, we can decompose this objective function into the difference of two submodular functions and adopt a modular-modular procedure to approximate it with a data-dependent approximation guarantee. Because of the difficulty to compute the exact objective value, we design a group of unbiased estimators by exploiting the idea of reverse influence sampling, which can improve time efficiency significantly without losing its approximation ratio. Finally, numerical experiments on real datasets verified the effectiveness of our approaches regardless of performance and efficiency.
Can a 3+2 Oscillation Model Explain the NuTeV Electroweak Results?
Creators: name: Ma, J. S.
name: Conrad, J. M.
name: Sorel, M.
name: Zeller, G. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The weak mixing angle result from NuTeV falls three standard deviations above the value determined by global electroweak fits. It has been suggested that one possible explanation for this result could be the oscillation of electron neutrinos in the NuTeV beam to sterile neutrinos. This article examines several cases of masses and mixings for 3+2 neutrino oscillation models which fit the current oscillation data at 99% CL. We conclude that electron to sterile neutrino oscillations can account for only up to a third of a standard deviation between the NuTeV determination of the weak mixing angle and the standard model.
description: 3 pages, 2 figures, submitted to Brief Reports
A definition of descendants at one point in graph calculus
Creators: name: Shadrin, Sergei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Algebra (math.QA)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We study the genus expansion of Barannikov-Kontsevich solutions of the WDVV equation. In terms of the related graph calculus we give a definition of descendants at one point and prove that this definition satisfies the topological recursion relations in genera 0, 1, and 2, string and dilaton equations, and the pull-back formula.
description: 18 pages
Surface Temperature Trend Estimation over 12 Sites in Guinea Using 57 Years of Ground-Based Data
Creators: name: Loua, René Tato
name: Bencherif, Hassan
name: Bègue, Nelson
name: Mbatha, Nkanyiso
name: Portafaix, Thierry
name: Hauchecorne, Alain
name: Sivakumar, Venkataraman
name: Bamba, Zoumana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Trend-Run model was performed to estimate the trend in surface temperatures recorded at 12 sites in Guinea from 1960 to 2016 and to examine the contribution of each climate forcing. The coefficient of determination (R 2) calculated varies between 0.60 and 0.90, it provides total information about the simulation capability of the model. The decadal trend values also calculated show an upward trend (between 0.04 {\textdegree}C $\pm$ 0.06 {\textdegree}C decade --1 and 0.21 {\textdegree}C $\pm$ 0.06 {\textdegree}C decade --1). In addition, forcings' contributions were quantified, and the annual oscillation (AO) contribution is higher for most of the stations, followed by semiannual oscillation (SAO). Among the forcings, the tropical Northern Atlantic (TNA) contribution is greater than that of the sunspot number (SSN), Ni{ñ}o3.4 and Atlantic Ni{ñ}o (AN). Moreover, the Mann-Kendall test revealed a positive significant trend for all stations except at the Macenta site. Additionally, with sequential Mann-Kendall test, trend turning points were found only for the stations of Mamou, Koundara and Macenta at different dates. The temperature anomalies depict warming episodes (1970s, 1980s, 1984 and 1990s). Since then, the temperature is consistently increasing over the country. A significant warming has been shown, which might be further investigated using these models with additional contributing factors.
Maximizing nearest neighbour entanglement in finitely correlated qubit--chains
Creators: name: Hiesmayr, Beatrix C.
name: Koniorczyk, Matyas
name: Narnhofer, Heide
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider translationally invariant states of an infinite one dimensional chain of qubits or spin-1/2 particles. We maximize the entanglement shared by nearest neighbours via a variational approach based on finitely correlated states. We find an upper bound of nearest neighbour concurrence equal to C=0.434095 which is 0.09% away from the bound C_W=0.434467 obtained by a completely different procedure. The obtained state maximizing nearest neighbour entanglement seems to approximate the maximally entangled mixed states (MEMS). Further we investigate in detail several other properties of the so obtained optimal state.
description: 12 pages, 4 figures, 2nd version minor changes
SOME GENERAL EQUILIBRIUM EFFECTS OF MINING GROWTH ON THE ECONOMY
Creators: name: Stoeckel, Andrew B.
name: Stoeckel, Andrew B.
Publisher: name: Unknown
Year: 1979
Subjects: Community/Rural/Urban Development
Resource /Energy Economics and Policy

description: The effects of mining sector growth are analysed with a five-sector general equilibrium model. The effect of the mineral discoveries is to cause the agricultural sector to contract, but to cause the import-competing sector to expand by a small amount--a result which differs from Gregory's (1976) analysis. However, a mining boom caused by increases in external demand, rather than by new discoveries, leads to a different set of results. Some likely effects of the boom on the growth rates of the different sectors in the economy are reported. Finally, the effects of an export tax on minerals are considered.
The discovery of an extreme jet in Rosette that shedding light on the formation of free-floating brown dwarfs and giant planets
Creators: name: Li, Jin Zeng
name: Rector, Travis A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the discovery of an optical jet with a striking morphology in the Rosette Nebula. It could be the most extreme case known of an accretion disk and jet system directly exposed to strong ionization fields that impose strong effects on its disk evolution. Unlike typical optical flows, this jet system is found to have a high excitation nature mainly due to disruptive interaction with the violent environment. As a result, the extension of the highly-collimated jet and possible former episodes of the degenerated counterjet all show bow-shocked structures. Our results provide implications on how incipience of massive stars in giant molecular clouds prevents further generations of low-mass star formation, and offers an evolutionary solution on how isolated substellar/planetary mass objects in regions of massive star formation are formed.
description: 3 figures
Can We Probe the Atmospheric Composition of an Extrasolar Planet from its Reflection Spectrum in a High-Magnification Microlensing Event?
Creators: name: Spiegel, David S.
name: Zamojski, Michel
name: Gersch, Alan
name: Donovan, Jennifer
name: Haiman, Zoltan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We revisit the possibility of detecting an extrasolar planet around a background star as it crosses the fold caustic of a foreground binary lens. During such an event, the planet's flux can be magnified by a factor of ~100 or more. The detectability of the planet depends strongly on the orientation of its orbit relative to the caustic. If the source star is inside the inter-caustic region, detecting the caustic-crossing planet is difficult against the magnified flux of its parent star. In the more favorable configuration, when the star is outside the inter-caustic region when the planet crosses the caustic, a close-in Jupiter-like planet around a Sun-like star at a distance of 8 kpc is detectable in 8-minute integrations with a 10m telescope at maximal S/N~15 for phase angle ~10 degrees. In this example, we find further that the presence of methane, at its measured abundance in Jupiter, and/or water, sodium and potassium, at the abundances expected in theoretical atmosphere models of close-in Jupiters, could be inferred from a non-detection of the planet in strong broad absorption bands at 0.6-1.4 microns caused by these compounds, accompanied by a S/N~10 detection in adjacent bands. We conclude that future generations of large telescopes might be able to probe the composition of the atmospheres of distant extrasolar planets.
description: Accepted for publication in ApJ, 9 emulateapj pages with 8 figures. Content and references have been added to original submission
The effect of hemispatial sunglasses on unilateral neglect among persons with right hemisphere stroke
Creators: name: Monette, Angela Dawn
Publisher: name: University of British Columbia
Year: 2009

description: This study examined the effectiveness of hemispatial glasses (HSG) in persons with left unilateral neglect (UN). The glasses reduced the amount of visual stimuli entering the non-neglected visual field and presumably enabled attention to be transferred to the neglected side. Two studies were conducted. Study #1 compared the performance of 13 persons with unilateral neglect on line bisection and shape cancellation with and without HSG. Three different types of HSG were compared. The response to the HSG varied across person, type of HSG, and test. One subject who demonstrated a benefit from the HSG participated in the second study. Study #2 assessed the impact of the HSG on activities of daily living (ADL) (eating, room look about, and shelf scanning) and standardized measures of neglect (shape cancellation). Single subject methodology (a multiple baseline design across behaviors with an embedded withdrawal) was used. The HSG had no effect on mobility or shelf scanning. Wearing the HSG during the room look about resulted in a marked improvement in scanning. The subject entered a generalization phase during which the HSG were worn for 4 hours daily but not for testing. During this phase, improvements on room look about increased and carryover occurred on the shape cancellation test. The data were analyzed visually and using semi-statistical techniques. Incidental findings include previously undocumented high variability in the shape cancellation test and BIT insensitivity to neglect over a large space. HSG are shown to be beneficial for neglect rehabilitation. The implications of the varied findings are discussed in terms of general neglect theory and treatment. As well, this study provides further support for the "forced use" model. The Subjective Neglect Questionnaire and a closing interview were performed to explore social validity issues.
Spreading processes in "post-epidemic" environments
Creators: name: Blavatska, V.
name: Holovatch, Yu.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We analyze infection spreading processes in a system where only a fraction $p$ of individuals can be affected by disease, while remaining $1-p$ individuals are immune. Such a picture can emerge as a natural consequence of previously terminated epidemic process or arise in formerly vaccinated population. To this end, we apply the synchronous cellular automata algorithm studying stationary states and spatial patterning in SI, SIS and SIR models on a square lattice with the fraction $p$ of active sites. A concept of "safety patterns" of susceptible agents surrounded by immune individuals naturally arises in a proposed system, which plays an important role in the course of epidemic processes under consideration. Detailed analysis of distribution of such patterns is given, which in turn determine the fraction of infected agents in a stationary state $I^*(p)$. Estimates for the threshold values of the basic reproduction number $R_0^c$ as a function of active agents fraction $p$ are obtained as well. In particular, our results allow to predict the optimal fraction of individuals, needed to be vaccinated in advance in order to get the maximal values of unaffected agents in a course of epidemic process with a given curing rate.
On numerical semigroups with at most 12 left elements
Creators: name: Eliahou, Shalom
name: Marín-Aragón, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: For a numerical semigroup S $\subseteq$ N with embedding dimension e, conductor c and left part L = S $\cap$ [0, c -- 1], set W (S) = e|L| -- c. In 1978 Wilf asked, in equivalent terms, whether W (S) $\ge$ 0 always holds, a question known since as Wilf's conjecture. Using a closely related lower bound W 0 (S) $\le$ W (S), we show that if |L| $\le$ 12 then W 0 (S) $\ge$ 0, thereby settling Wilf's conjecture in this case. This is best possible, since cases are known where |L| = 13 and W 0 (S) = --1. Wilf's conjecture remains open for |L| $\ge$ 13.
Belorousski-Pandharipande relation in dGBV algebras
Creators: name: Shadrin, Sergei
name: Shneiberg, Igor
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Algebra (math.QA)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We prove that the genus expansion of solutions of the WDVV equation constructed from dGBV algebras satisfy the differential equation determined by the Belorousski-Pandharipande relation in cohomology of the moduli space of curves $\bar{\mathcal{M}}_{2,3}$.
description: 22 pages
Photo Thermal Effect Graphene Detector Featuring 105 Gbit s-1 NRZ and 120 Gbit s-1 PAM4 Direct Detection
Creators: name: Marconi, S.
name: Giambra, M. A.
name: Montanaro, A.
name: Mišeikis, V.
name: Soresi, S.
name: Tirelli, S.
name: Galli, P.
name: Buchali, F.
name: Templ, W.
name: Coletti, C.
name: Sorianello, V.
name: Romagnoli, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The challenge of next generation datacom and telecom communication is to increase the available bandwidth while reducing the size, cost and power consumption of photonic integrated circuits. Silicon (Si) photonics has emerged as a viable solution to reach these objectives. Graphene, a single-atom thick layer of carbon5, has been recently proposed to be integrated with Si photonics because of its very high mobility, fast carrier dynamics and ultra-broadband optical properties. Here, we focus on graphene photodetectors for high speed datacom and telecom applications. High speed graphene photodetectors have been demonstrated so far, however the most are based on the photo-bolometric (PB) or photo-conductive (PC) effect. These devices are characterized by large dark current, in the order of milli-Amperes , which is an impairment in photo-receivers design, Photo-thermo-electric (PTE) effect has been identified as an alternative phenomenon for light detection. The main advantages of PTE-based photodetectors are the optical power to voltage conversion, zero-bias operation and ultra-fast response. Graphene PTE-based photodetectors have been reported in literature, however high-speed optical signal detection has not been shown. Here, we report on an optimized graphene PTE-based photodetector with flat frequency response up to 65 GHz. Thanks to the optimized design we demonstrate a system test leading to direct detection of 105 Gbit s-1 non-return to zero (NRZ) and 120 Gbit s-1 4-level pulse amplitude modulation (PAM) optical signals
La Limitatio Romana: Alcune Definizioni
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2020
Subjects: Centuriazione

description: Prima parte di una discussione sulla tecnica di agrimensura romana, detta limitatio o anche centuriazione. Si forniscono alcune definizioni. L'uso della groma, uno degli strumenti usati dagli agrimensori, sarà analizzato in dettaglio La discussione ha lo scopo di preparare ad una ulteriore discussione sull'orientamento della limitatio.
A COMPARISON OF DEPRECIATION METHODS UNDER CURRENT COST ACCOUNTING
Creators: name: Davey, L.E.
name: Davey, L.E.
Publisher: name: Unknown
Year: 1979
Subjects: Agricultural Finance

description: In New Zealand the Richardson Report has recommended to government the adoption of a form of inflation accounting known as Current Cost Accounting (CCA). This paper reports research carried out to determine which of the traditional historical cost depreciation methods used in farm accounting might be most appropriate when adapted to a current cost basis. The current cost depreciation methods are compared on the basis of their ability to predict accurately actual replacement values for a survey sample of farm tractors and headers. The resultant measures of depreciation are compared with those currently allowable under New Zealand taxation laws, and the proposition that investment allowances on purchases of new machinery offset the inadequacies of historical cost depreciation is discussed.
Convexity preserving jump-diffusion models for option pricing
Creators: name: Ekström, Erik
name: Tysk, Johan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: Pricing of Securities (q-fin.PR)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: 91B28; 35B99; 60J75

description: We investigate which jump-diffusion models are convexity preserving. The study of convexity preserving models is motivated by monotonicity results for such models in the volatility and in the jump parameters. We give a necessary condition for convexity to be preserved in several-dimensional jump-diffusion models. This necessary condition is then used to show that, within a large class of possible models, the only convexity preserving models are the ones with linear coefficients.
description: 14 pages
Spectral Theorem approach to the Characteristic Function of Quantum Observables
Creators: name: Boukas, Andreas
name: Feinsilver, Philip
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: Primary 81Q10, 47B25, 47B15, 47A10, Secondary 47B40, 47B47, 80M22

description: Using the spectral theorem we compute the Quantum Fourier Transform (or Vacuum Characteristic Function) $\langle Φ, e^{itH}Φ\rangle$ of an observable $H$ defined as a self-adjoint sum of the generators of a finite-dimensional Lie algebra, where $Φ$ is a unit vector in a Hilbert space $\mathcal{H}$. We show how Stone's formula for computing the spectral resolution of a Hilbert space self-adjoint operator, can serve as an alternative to the traditional reliance on splitting (or disentanglement) formulas for the operator exponential.
Die DEMel-Belegzettel und ihre Quellen: Ein Anwendungsfall für automatische Texterkennung
Creators: name: Müller, Caroline
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Spanish
subject: Old Spanish
subject: Dictionary
subject: Digital Humanities
subject: Linguistics
subject: FOS: Languages and literature
subject: Historical Linguistics
subject: Romance Studies
subject: Text recognition
subject: OCR
subject: Digital Archive

description: Präsentation zum Vortrag "Die DEMel-Belegzettel und ihre Quellen: Ein Anwendungsfall für automatische Texterkennung", der am 8. Januar 2024 an der Universität Rostock in der Ringvorlesung "Digital Humanities im Fokus: Methoden, Anwendungen und Perspektiven" gehalten wurde.

Abstract:

Das "Diccionario del Español Medieval electrónico" ist eine lemmatisierte Datenbank zum mittelalterlichen Spanisch. Sie ist aus der Digitalisierung und Erschließung von rund 700.000 Belegzetteln entstanden. Diese überwiegend handschriftlichen Belegzettel zeigen Auszüge aus altspanischen Texten, in denen das zu untersuchende Wort vorkommt, und dokumentieren somit seine Verwendung und Bedeutung im 10. bis 15. Jahrhundert. In der aktuellen Projektphase sollen die von den Zetteln erfassten Wortbelege mit ihren Quellentexten verknüpft werden. Dafür werden die im digitalen Volltext verfügbaren Quellen in XML/TEI konvertiert und die Belege darin ausgezeichnet.

Der Vortrag zeigt, wie die Belegauszeichnung durch den Einsatz von Texterkennung bei den Belegzetteln weitgehend automatisiert werden soll. Dabei wird auf die Erfahrungen mit den verwendeten Softwares zur Texterkennung, Transkribus und Tesseract, eingegangen und erste Ergebnisse zu Evaluation des Workflows gegeben.

Kurzbio:

Caroline Müller hat Hispanistik und Latinistik an der Technischen Universität Dresden, der Universitat de Lleida und der Christian-Albrechts-Universität zu Kiel sowie Digital Humanities an der Universidad Nacional de Educación a Distancia (UNED) studiert. Seit Juli 2017 arbeitet sie als wissenschaftliche Mitarbeiterin im Projekt "Diccionario del Español Medieval electrónico" (DEMel).