cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
T-odd Leading-Twist Quark TMDs at Small $x$
Creators: name: Kovchegov, Yuri V.
name: Santiago, M. Gabriel
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the small-$x$ asymptotics of the flavor non-singlet T-odd leading-twist quark transverse momentum dependent parton distributions (TMDs), the Sivers and Boer-Mulders functions. While the leading eikonal small-$x$ asymptotics of the quark Sivers function is given by the spin-dependent odderon, we are interested in revisiting the sub-eikonal correction considered by us earlier. We first simplify the expressions for both TMDs at small Bjorken $x$ and then construct small-$x$ evolution equations for the resulting operators in the large-$N_c$ limit, with $N_c$ the number of quark colors. For both TMDs, the evolution equations resum all powers of the double-logarithmic parameter $α_s \, \ln^2 (1/x)$, where $α_s$ is the strong coupling constant, which is assumed to be small. Solving these evolution equations numerically (for the Sivers function) and analytically (for the Boer-Mulders function) we arrive at the following leading small-$x$ asymptotics of these TMDs at large $N_c$: \begin{align} f_{1 \: T}^{\perp \: NS} (x \ll 1 ,k_T^2) & = C_O (x, k_T^2) \, \frac{1}{x} + C_1 (x, k_T^2) \, \left( \frac{1}{x} \right)^{3.4 \, \sqrt{\frac{α_s \, N_c}{4 π}}} , \notag \\ h_1^{\perp \, \textrm{NS}} (x \ll 1, k_T^2) & = C (x, k_T^2) \left( \frac{1}{x} \right)^{-1}. \notag \end{align} The functions $C_O (x, k_T^2)$, $C_1 (x, k_T^2)$, and $C (x, k_T^2)$ can be readily obtained in our formalism: they are mildly $x$-dependent and do not strongly affect the power-of-$x$ asymptotics shown above. The function $C_O$, along with the $1/x$ factor, arises from the odderon exchange. For the sub-eikonal contribution to the quark Sivers function (the term with $C_1$), our result shown above supersedes the one obtained in our previous work due to the new contributions identified recently.
description: 50 pages, 5 figures
Adaptive Heterogeneous Multiscale Methods for immiscible two-phase flow in porous media
Creators: name: Henning, Patrick
name: Ohlberger, Mario
name: Schweizer, Ben
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 76S05, 35B27, 65G99, 65N08, 65N30

description: In this contribution we present the first formulation of a heterogeneous multiscale method for an incompressible immiscible two-phase flow system with degenerate permeabilities. The method is in a general formulation which includes oversampling. We do not specify the discretization of the derived macroscopic equation, but we give two examples of possible realizations, suggesting a finite element solver for the fine scale and a vertex centered finite volume method for the effective coarse scale equations. Assuming periodicity, we show that the method is equivalent to a discretization of the homogenized equation. We provide an a-posteriori estimate for the error between the homogenized solutions of the pressure and saturation equations and the corresponding HMM approximations. The error estimate is based on the results recently achieved in [C. Canc{è}s, I. S. Pop, and M. Vohral\'ık. An a posteriori error estimate for vertex-centered finite volume discretizations of immiscible incompressible two-phase flow. Math. Comp., 2014].
Exploring the neutron skin by hyperon-antihyperon production in antiproton-nucleus interactions
Creators: name: Christiansen, Martin
name: Schupp, Falk
name: Achenbach, Patrick
name: Bölting, Michael
name: Pochodzalla, Josef
name: Steinen, Marcell
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work we propose a new method to measure the evolution of the neutron skin thickness between different isotopes. We consider antiproton-nucleus interactions close to the production threshold of $Λ\overlineΛ$ and $Σ\overlineΛ$ pairs. At low energies, $Λ\overlineΛ$ pairs are produced in p + p collisions, while $Σ\overlineΛ$ pairs can only be produced in p + n interactions. Measuring these cross sections provides information on the neutron skin thickness
description: 4 pages, 3 figures, 14th International Conference on Hypernuclear and Strange Particle Physics - HYP2022
Some New Results on Strong Integer Additive Set-Indexers of Graphs
Creators: name: Sudev, N. K.
name: Germina, K. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C78

description: Let $\mathbb{N}_0$ be the set of all non-negative integers. An integer additive set-indexer of a graph $G$ is an injective function $f:V(G)\to 2^{\mathbb{N}_0}$ such that the induced function $g_f:E(G) \rightarrow 2^{\mathbb{N}_0}$ defined by $f^+(uv) = f(u)+ f(v)$ is also injective. An IASI is said to be {\em $k$-uniform} if $|f^+(e)| = k$ for all $e\in E(G)$. In this paper, we introduce the notions of strong integer additive set-indexers and initiate a study of the graphs which admit strong integer additive set-indexers.
description: 11 pages, 2 figures
Heat capacity double transitions in time-reversal symmetry broken superconductors
Creators: name: Røising, Henrik S.
name: Wagner, Glenn
name: Roig, Mercè
name: Rømer, Astrid T.
name: Andersen, Brian M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Standard superconductors display a ubiquitous discontinuous jump in the electronic specific heat at the critical superconducting transition temperature. In a growing class of unconventional superconductors, however, a second order parameter component may get stabilized and produce a second heat capacity jump at a lower temperature, typically associated with the spontaneous breaking of time-reversal symmetry. The splitting of the two specific heat discontinuities can be controlled by external perturbations such as chemical substitution, hydrostatic pressure, or uniaxial strain. We develop a theoretical quantitative multi-band framework to determine the ratio of the heat capacity jumps, given the band structure and the order parameter momentum structure. We discuss the conditions of the gap profile which determine the amplitude of the second jump. We apply our formalism to the case of Sr$_2$RuO$_4$, and using the gap functions from a microscopic random phase approximation calculation, we show that recently-proposed accidentally degenerate order parameters may exhibit a strongly suppressed second heat capacity jump. We discuss the origin of this result and consider also the role of spatial inhomogeneity on the specific heat. Our results provide a possible explanation of why a second heat capacity jump has so far evaded experimental detection in Sr$_2$RuO$_4$.
description: 13+8 pages, 8+8 figures
Truncation Trees in Hierarchical Truncated PluriGaussian Simulation
Creators: Velasquez Sanchez, Harold G.
Publisher: name: University of Alberta Library
Year: 2023

Geological uncertainty is a major source of risk in resource projects and must be characterized. Extensive research has been undertaken in the development of sophisticated techniques given the economic impact of this uncertainty. The Hierarchical Truncated PluriGaussian (HTPG) simulation is well‑known among existing categorical modeling techniques for its ability to portray realistic features. HTPG uses latent Gaussian variables to simulate categories. The rules to map continuous variables to categories, and to introduce juxtaposition constraints are key and known as truncation trees. The number of truncation trees is large, and their structures are very flexible, however, choosing the correct one is a daunting task. This work focuses on developing tools to choose the truncation tree that leads to the optimal model. The process starts with the inference of possible trees from any source of limited data including drillholes, point samples, or images. Then, a tree is chosen based on measures of goodness. This research has made several contributions. First, it presented tools to enumerate all possible trees in friendly plots given the number of categories. Second, it introduced interval probabilities to quantify the geometrical associations of categories and proposed a dissimilarity matrix based on this concept to summarize the associations and to be used in inference algorithms. Third, it implemented Single Linkage Cluster Analysis (SLCA), and spectral partitioning from graph theory for the inference of trees. Lastly, it showed an optimization framework in a synthetic example that used all trees to recommend transition probabilities as an appropriate measure of goodness. The tools and methodologies were used in a case study where the chosen tree obtained good metrics and respected the geological understanding.
title: Sexualisierte Diskriminierung und Gewalt an NRW-Hochschulen
Creators: name: Kortendiek, Beate
name: Mense, Lisa
name: Beaufaÿs, Sandra
name: Bünnig, Jenny
name: Hendrix, Ulla
name: Jeremia, Herrmann
name: Mauer, Heike
name: Niegel, Jennifer
Publisher: name: DuEPublico
Year: 2023

description: Unter dem Schlagwort „MeToo in Science“ sind in jüngerer Zeit verschiedene Fälle von sexueller Belästigung, Gewalt, Erniedrigung und Machtmissbrauch durch Professoren publik geworden (z. B. Eberle/Löffler 2022; Fuhrmann 2022; Komma-Pöllath 2021). Diese Beispiele werfen Fragen danach auf, warum es an Hochschulen offensichtlich so schwer ist, gegen gravierendes Fehlverhalten – insbesondere von arrivierten Wissenschaftlern –  vorzugehen und Betroffene adäquat zu unterstützen (vgl. Der Spiegel 2022).

In diesem Beitrag gehen wir kurz auf Forschung zu sexualisierter Diskriminierung und Gewalt in Wissenschaftsorganisationen ein und stellen im Anschluss daran Ergebnisse aus eigenen Untersuchungen vor, u. a. zum wissenschaftlichen Mittelbau und zum Umgang der Hochschulen in Nordrhein-Westfalen mit sexualisierter Diskriminierung und Gewalt (Gender-Report 2022). Dabei wird deutlich, weshalb es gerade im Wissenschaftskontext nicht einfach ist, (sexualisierter) Diskriminierung und Gewalt entgegenzutreten.
description: blog interdisziplinäre geschlechterforschung
Summary of progress on the Blaschke conjecture
Creators: name: McKay, Benjamin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C20

description: The Blaschke conjecture claims that every compact Riemannian manifold whose injectivity radius equals its diameter is, up to constant rescaling, a compact rank one symmetric space. We summarize the intuition behind this problem, the proof that such manifolds have the cohomology of compact rank one symmetric spaces, and the proof of the conjecture for homology spheres and homology real projective spaces. We also summarize what is known on the diffeomorphism, homeomorphism and homotopy types of such manifolds.
description: 21 pages
Characterizing Compact 15-33 GHz Radio Continuum Sources in Local U/LIRGs
Creators: name: Song, Y.
name: Linden, S. T.
name: Evans, A. S.
name: Barcos-Munoz, L.
name: Murphy, E. J.
name: Momjian, E.
name: Diaz-Santos, T.
name: Larson, K. L.
name: Privon, G. C.
name: Huang, X.
name: Armus, L.
name: Mazzarella, J. M.
name: U, V.
name: Inami, H.
name: Charmandaris, V.
name: Ricci, C.
name: Emig, K. L.
name: McKinney, J.
name: Yoon, I.
name: Kunneriath, D.
name: Lai, T. S. -Y.
name: Rodas-Quito, E. E.
name: Saravia, A.
name: Gao, T.
name: Meynardie, W.
name: Sanders, D. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the analysis of $\sim 100$pc-scale compact radio continuum sources detected in 63 local (Ultra) Luminous Infrared Galaxies (U/LIRGs; $L_{\rm IR} \ge 10^{11} L_\odot$), using FWHM $\lesssim 0''.1 - 0''.2$ resolution 15 and 33 GHz observations with the Karl G. Jansky Very Large Array. We identify a total of 133 compact radio sources with effective radii of 8 - 170pc, which are classified into four main categories -- "AGN" (AGN), "AGN/SBnuc" (AGN-starburst composite nucleus), "SBnuc" (starburst nucleus) and "SF" (star-forming clumps) -- based on ancillary datasets and the literature. We find that "AGN" and "AGN/SBnuc" more frequently occur in late-stage mergers and have up to 3 dex higher 33 GHz luminosities and surface densities compared with "SBnuc" and "SF", which may be attributed to extreme nuclear starburst and/or AGN activity in the former. Star formation rates (SFRs) and surface densities ($Σ_{\rm SFR}$) are measured for "SF" and "SBnuc" using both the total 33 GHz continuum emission (SFR $\sim 0.14 - 13$ M$_\odot$ yr$^{-1}$, $Σ_{\rm SFR} \sim 13 - 1600$ M$_\odot$ yr$^{-1}$ kpc$^{-2}$) and the thermal free-free emission from HII regions (median SFR$_{\rm th} \sim 0.4$ M$_\odot$ yr$^{-1}$, $Σ_{\rm SFR_{th}} \sim 44$ M$_\odot$ yr$^{-1}$ kpc$^{-2}$). These values are 1 - 2 dex higher than those measured for similar-sized clumps in nearby normal (non-U/LIRGs). The latter also have much flatter median 15 - 33 GHz spectral index ($\sim -0.08$) compared with "SBnuc" and "SF" ($\sim -0.46$), which may reflect higher non-thermal contribution from supernovae and/or ISM densities in local U/LIRGs that directly result from and/or lead to their extreme star-forming activities on 100\,pc scales.
description: Accepted for publication in ApJ
title: eAQUA: Text als „Wissensrohstoff?“
Creators: name: Rücker, Michaela
Publisher: name: University Library Heidelberg
Year: 2013

description: The following article summarizes the main results of the last three years working on the eAQUA project – an interdisciplinary collaboration between computer science and classical studies. The work is based on the notion of text as a resource of knowledge (“Wissensrohstoff”). By using the methods of text mining, that means automatic analysis methods, new results should be found and unexpected connections should be identified. The developed tools are not new in computer science but the benefit lies in the more efficient work with the ancient texts. The paper gives also a short preview to the development of the eHumanities infrastructure that will be coordinated by CLARIN-Europe. At the same time a new project - “Dissemination” - begins, which follows eAQUA. So the results of eAQUA will be continued on a permanent basis in a close cooperation with other colleagues.
description: The following article summarizes the main results of the last three years working on the eAQUA project – an interdisciplinary collaboration between computer science and classical studies. The work is based on the notion of text as a resource of knowledge (“Wissensrohstoff”). By using the methods of text mining, that means automatic analysis methods, new results should be found and unexpected connections should be identified. The developed tools are not new in computer science but the benefit lies in the more efficient work with the ancient texts. The paper gives also a short preview to the development of the eHumanities infrastructure that will be coordinated by CLARIN-Europe. At the same time a new project - “Dissemination” - begins, which follows eAQUA. So the results of eAQUA will be continued on a permanent basis in a close cooperation with other colleagues.
Sequential learning to accelerate discovery of alkali-activated binders
Creators: name: Völker, Christoph
name: Firdous, Rafia
name: Stephan, Dietmar
name: Kruschwitz, Sabine
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::670 Industrielle Fertigung::670 Industrielle Fertigung
subject: materials science
subject: characterization and evaluation of materials
subject: polymer sciences
subject: solid mechanics
subject: crystallography
subject: scattering methods

description: Alkali-activated binders (AAB) can provide a clean alternative to conventional cement in terms of CO2 emissions. However, as yet there are no sufficiently accurate material models to effectively predict the AAB properties, thus making optimal mix design highly costly and reducing the attractiveness of such binders. This work adopts sequential learning (SL) in high-dimensional material spaces (consisting of composition and processing data) to find AABs that exhibit desired properties. The SL approach combines machine learning models and feedback from real experiments. For this purpose, 131 data points were collected from different publications. The data sources are described in detail, and the differences between the binders are discussed. The sought-after target property is the compressive strength of the binders after 28 days. The success is benchmarked in terms of the number of experiments required to find materials with the desired strength. The influence of some constraints was systematically analyzed, e.g., the possibility to parallelize the experiments, the influence of the chosen algorithm and the size of the training data set. The results show the advantage of SL, i.e., the amount of data required can potentially be reduced by at least one order of magnitude compared to traditional machine learning models, while at the same time exploiting highly complex information. This brings applications in laboratory practice within reach.
An algorithm for producing F-pure ideals
Creators: name: Boix, Alberto F.
name: Katzman, Mordechai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: Primary 13A35, Secondary 14B05

description: This paper describes a method for computing all F-pure ideals for a given Cartier map of a polynomial ring over a finite field.
description: 11 pages. Comments are welcome
Exponential integrability properties of numerical approximation processes for nonlinear stochastic differential equations
Creators: name: Hutzenthaler, Martin
name: Jentzen, Arnulf
name: Wang, Xiaojie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 65C30

description: Exponential integrability properties of numerical approximations are a key tool for establishing positive rates of strong and numerically weak convergence for a large class of nonlinear stochastic differential equations. It turns out that well-known numerical approximation processes such as Euler-Maruyama approximations, linear-implicit Euler approximations, and some tamed Euler approximations from the literature rarely preserve exponential integrability properties of the exact solution. The main contribution of this article is to identify a class of stopped increment-tamed Euler approximations which preserve exponential integrability properties of the exact solution under minor additional assumptions on the involved functions.
description: 39 pages
Quintessence Universe and cosmic acceleration in $f(Q,T)$ gravity
Creators: name: Koussour, M.
name: Myrzakulov, N.
name: Shekh, S. H.
name: Bennai, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The problem of cosmic acceleration and dark energy is one of the mysteries presently posed in the scientific society that general relativity has not been able to solve. In this work, we have considered alternative models to explain this late-time acceleration in a flat Friedmann-Lemaî% tre-Robertson-Walker (FLRW) Universe within the framework of the $% f\left(Q,T\right) $\ modified gravity theory (where $Q$ is the non-metricity and $T$ is the trace of the energy-momentum tensor) recently proposed by Xu et al. (Eur. Phys. J. C 79 (2019) 708), which is an extension of $f\left( Q\right) $ gravity with the addition of the $T$ term. Here, we presume a specific form of $f\left( Q,T\right) =αQ+βQ^{2}+γT$ where $% α$, $β$ and $γ$ are free model parameters, and obtained the exact solutions by assuming the cosmic time-redshift relation as $t(z)=\frac{% nt_{0}}{m}g(z)$ which produces the Hubble parameter of the form $H(z)=\frac{% mH_{0}}{m+n}\left[ \frac{1}{g(z)}+1\right] $ where $m$ and $n$ are the non-negative constants, we find the best values for them using 57 data points of the Hubble parameter $H\left( z\right) $. Also, we find the behavior of different cosmological parameters as the deceleration parameter $% \left( q\right) $, energy density $\left( ρ\right) $, pressure $% \left(p\right) $ and EoS parameter $\left( ω\right) $ and compare them with the observational results. To ensure the validity of the results, we studied the energy conditions along with jerk parameter. Finally, we find that our model behaves similarly to the quintessence Universe.
description: IJMPD accepted version
Probing the scale of New Physics at the LHC: the example of Higgs data
Creators: name: Fichet, Sylvain
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a technique to determine the scale of New Physics (NP) compatible with any set of data, relying on well-defined credibility intervals. Our approach relies on the statistical view of the effective field theory capturing New Physics at low energy. We introduce formally the notion of testable NP and show that it ensures integrability of the posterior distribution. We apply our method to the Standard Model Higgs sector in light of recent LHC data, considering two generic scenarios. In the scenario of democratic higher dimensional operators generated at one-loop, we find the testable NP scale to lie within $[10,260]$ TeV at $95\%$ Bayesian credibility level. In the scenario of loop-suppressed field strength-Higgs operators, the testable NP scale is within $[28,1200]$ TeV at $95\%$ Bayesian credibility level. More specific UV models are necessary to allow lower values of the NP scale.
description: 19 pages, 3 figures, cosmetic changes, matches journal version. Nuclear Physics B (2014)
On Ensemble Models for Associative Classification
Creators: Kabir, Md Rayhan
Publisher: name: University of Alberta Library
Year: 2023

Associative classifiers have shown competitive performance with state-of-the-art methods for predicting class labels. In addition to accuracy performance, associative classifiers  produce human readable rules for classification which provides an easier way to understand the decision process of the model. Early models of associative classifiers suffered from the limitation of selecting proper threshold values which are dataset specific. Recent work on associative classifiers eliminates that restriction by searching for statistically  significant rules. However, a high dimensional feature vector in the training data impacts the performance of the model. In this study we propose Dynamic Ensemble Associative Learning (DEAL) where we use associative classifiers as base learners on feature sub-spaces and a dynamic feature sampling procedure which automatically defines the number of base learners and ensures diversity and  completeness among the subset of feature vectors. This method eliminates the limitation of high memory requirement and runtime of recent associative classifiers for training datasets having large feature vectors without jeopardising the accuracy of the model.

In addition, to better understand the decision process of our model, we propose an ensemble model, Classification by Frequent Association Rules (CFAR) using associative classifiers as base learners. In our approach, instead of using classical ensemble and a voting method, we rank the generated rules based on frequency and select a subset of the rules for predicting class labels.  This ensemble approach CFAR also eliminates the limitation of high memory requirement and runtime of recent associative classifiers. This approach removes the noisy rules for the classification process which further enhances the performance of the model in terms of accuracy.

Further, inspired by the tremendous performance of deep neural networks, we propose Deep Associative Classifier (DAC), an ensemble of associative classifiers that transforms features in a deep model representation. This model has deep neural network like architecture with associative classifiers as a base learner and overcomes some of the limitations of deep neural network architecture as well as associative classifiers.

We use 10 datasets from the UCI repository to evaluate the performance of the models. We compare our approaches with different machine learning models. All three of our proposed models address the limitation of recent associative classifier of requiring high memory and long runtime along with showing competitive  performance in accuracy in contrast to various state-of-the-art classifiers.
Uncertainty Modeling of a Vein Deposit
Creators: Batty, Matthew
Publisher: name: University of Alberta Library
Year: 2023

This thesis sets out a workflow to quantify uncertainty of the Arrow Deposit, a tabular, vein type, high-grade, basement-hosted, uranium deposit located on NexGen Energy Limited’s 100%-owned Rook I property in northern Saskatchewan. The uncertainty associated with the volume, grade, and density variables of the deposit are the focus of the study, as these variables define the overall metal content of the deposit, the largest input to project economics.

In the study domain, the grade variable is exhaustively sampled at all drill hole locations, but the density variable is missing at approximately 82% of the drill hole locations and biased to high-grade intercepts. Effort was taken to make an interim debiased homotopic representative dataset through a simple imputation process that selected density values from the global deposit-wide dataset. Two uncertainty models were created for the grade and density variables using the representative dataset: a multivariate spatial bootstrap model and a density-imputed model using a Gaussian Mixture Model built on the representative dataset, followed by decorrelation via Projection Pursuit Multivariate Transformation and independent grid Sequential Gaussian Simulation. The multivariate spatial bootstrap model provided an assessment of uncertainty of the histogram parameters while considering the spatial correlation between the variables at data locations. The imputation and simulation process features the transfer of the uncertainty associated with the missing values of the original dataset while accounting for the biased nature of the dataset.

Volume uncertainty was quantified by assessing: the uncertainty of the thickness perpendicular to the plane of continuity via a geometry imputation process, and the uncertainty of the boundary in the plane of continuity via an indicator estimate. The two assessments of domain uncertainty were combined to output volume uncertainty. The volume, grade, and density uncertainty models were combined into a single model; this uncertainty model will be used as the basis to evaluate mine output uncertainty with the mine design as the transfer function.

The metal content of the Arrow Deposit is most sensitive to changes in volume due to the extreme high-grade nature of the deposit, therefore the Boundary model, which has a large range of possible volumes (and range in the determination of ore/not ore), contributes the most to the metal content uncertainty. The Grade/Density model also significantly contributed to the metal content uncertainty, which is credited to the short-range variability of the variables. The thickness perpendicular to the plane of continuity model provided additional uncertainty to the metal content, but to a much lesser degree as the range of possible volumes associated with the model were relatively small.
title: Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 4, Nr. 3 (1961): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Multiplicity dependence of two-particle azimuthal correlations in pp collisions at the LHC
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the measurements of particle pair yields per trigger particle obtained from di-hadron azimuthal correlations in pp collisions at $\sqrt{s} = 0.9$, $2.76$, and $7$ TeV recorded with the ALICE detector. The yields are studied as a function of the charged particle multiplicity. Taken together with the single particle yields the pair yields provide information about parton fragmentation at low transverse momenta, as well as on the contribution of multiple parton interactions to particle production. Data are compared to calculations using the PYTHIA6, PYTHIA8, and PHOJET event generators.
description: 36 pages, 18 captioned figures, 4 tables, authors from page 31, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/852
title: Der Chorturm in Langenbrand (Kr. Calw) und seine Ausmalung
Creators: name: Hoffmann, Herbert
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 8, Nr. 1 (1965): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Towards Building Coherent and Faithful Conversational Models
Creators: Dziri, Nouha
Publisher: name: University of Alberta Library
Year: 2023

Dialogue systems powered by large pre-trained language models exhibit an innate ability to deliver fluent and natural-sounding responses. Despite their impressive performance, these models fail to conduct interesting and consistent exchanges of turns and can often generate factually incorrect statements, known as "hallucinations",  impeding their widespread adoption in real-world applications. These issues seem not to be rectified by simply training autoregressive neural models on a massive amount of Web data and then fine-tuning on a specific dialogue benchmark. Progress towards models that do not exhibit these issues requires evaluation metrics that can quantify their prevalence. Unfortunately, there is a significant progress in models' architectures without a significant progress on how they are being evaluated. What is more, current metrics capture mostly surface-level improvements (e.g., human-likeness) and fail dramatically at measuring a deep understanding of attribution.This dissertation aims at building coherent and faithful conversational models by addressing existing problems from three perspectives: modelling, data and evaluation. First, I introduce DEMI, a new objective function,  which aims to make responses more coherent, interesting and diverse. DEMI focuses on maximizing mutual information between past and known future utterances of a particular turn. This is done by applying the chain rule on mutual information and bounding each term separately.Second, I present Neural Path Hunter (NPH), which follows a generate-then-refine approach by augmenting conventionalconversational models with an additional refinement stage enabling them to correct potential hallucinations by querying a knowledge graph. Third, I introduce the BEGIN benchmark designed to evaluate attribution in knowledge-grounded dialogue systems. Through a comprehensive evaluation study on BEGIN, I show that a broad set of existing automatic metrics do not reliably distinguish attributable abstractive responses from unattributable ones, and perform substantially worse when the knowledge source is longer. And lastly, I discuss the origin of hallucinations in conversational models and link that to noise in dialogue benchmarks and to modelling weaknesses. To address this problem, I  follow a data centric approach and introduce a new benchmark, FaithDial, which drastically enhances faithfulness and other dialogue qualities.Overall, in pursuit of building trustworthy conversational models that can be readily adopted in real-world applications, the present thesis highlights (1) how to embed human-like conversational properties in responses (2) how to make responses more  faithful and less hallucinated (3) how to reliably evaluate faithfulness.
Galaxy-galaxy lensing in the VOICE deep survey
Creators: name: Luo, Ruibiao
name: Fu, Liping
name: Luo, Wentao
name: Napolitano, Nicola R.
name: Xie, Linghua
name: Radovich, Mario
name: Liu, Jing
name: Li, Rui
name: Amaro, Valeria
name: Chen, Zhu
name: Liu, Dezi
name: Fan, Zuhui
name: Covone, Giovanni
name: Vaccari, Mattia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The multi-band photometry of the VOICE imaging data, overlapping with 4.9 deg$^2$ of the Chandra Deep Field South (CDFS) area, enables both shape measurement and photometric redshift estimation to be the two essential quantities for weak lensing analysis. The depth of $mag_{AB}$ is up to 26.1 (5$σ$ limiting) in $r$-band. We estimate the Excess Surface Density (ESD; $ΔΣ$) based on galaxy-galaxy measurements around galaxies at lower redshift (0.10<$z_l$<0.35) while we select the background sources to be at higher redshift ranging from 0.3 to 1.5. The foreground galaxies are divided into two major categories according to their colour (blue/red), each of which has been further divided into high/low stellar mass bins. Then the halo masses of the samples are estimated by modelling the signals, and the posterior of the parameters are samples via Mote Carlo Markov Chain (MCMC) process. We compare our results with the existing Stellar-to-Halo Mass Relation (SHMR) and find that the blue low stellar mass bin (median $M_*=10^{8.31}M_\odot$) deviates from the SHMR relation whereas all other three samples agrees well with empirical curves. We interpret this discrepancy as the effect of a low star formation efficiency of the low-mass blue dwarf galaxy population dominated in the VOICE-CDFS area.
description: 17 pages, 17 figures, submitted to A&A
title: Das Sickingen-Palais zu Freiburg i. Br.
Creators: name: Korn, Werner
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 8, Nr. 2 (1965): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Die alten Steinkreuze in Baden-Württemberg
Creators: name: Losch, Berhnard
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 9, Nr. 2 (1966): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Scalar Field as a Bose-Einstein Condensate?
Creators: name: Castellanos, Elías
name: Escamilla-Rivera, Celia
name: Macías, Alfredo
name: Núñez, Darío
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We discuss the analogy between a classical scalar field with a self-interacting potential, in a curved spacetime described by a quasi--bounded state, and a trapped Bose-Einstein condensate. In this context, we compare the Klein-Gordon equation with the Gross-Pitaevskii equation. Moreover, the introduction of a curved background spacetime endows, in a natural way, an equivalence to the Gross-Pitaevskii equation with an explicit confinement potential. The curvature also induces a position dependent self-interaction parameter. We exploit this analogy by means of the Thomas-Fermi approximation, commonly used to describe the Bose-Einstein condensate, in order to analyze the quasi bound scalar field distribution surrounding a black hole.
description: 17 pages, 5 figures
title: Die Silbermann-Orgel in Meißenheim
Creators: name: Hesselbacher, Martin
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 9, Nr. 3-4 (1966): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Stochastic processes with random contexts: a characterization, and adaptive estimators for the transition probabilities
Creators: name: Oliveira, Roberto Imbuzeiro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60F99, 62M09, 62B10

description: This paper introduces the concept of random context representations for the transition probabilities of a finite-alphabet stochastic process. Processes with these representations generalize context tree processes (a.k.a. variable length Markov chains), and are proven to coincide with processes whose transition probabilities are almost surely continuous functions of the (infinite) past. This is similar to a classical result by Kalikow about continuous transition probabilities. Existence and uniqueness of a minimal random context representation are proven, and an estimator of the transition probabilities based on this representation is shown to have very good "pastwise adaptativity" properties. In particular, it achieves minimax performance, up to logarithmic factors, for binary renewal processes with bounded $2+γ$ moments.
title: [Beilage] Das Baden-Württembergische Denkmalschutzgesetz
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 1 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Die katholische Pfarrkirche St. Peter und Paul in Grünsfeld, Kreis Tauberbischofsheim. Ihre bauliche Erweiterung und Restaurierung
Creators: name: Niester, Heinrich
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 2 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
The Velocity Distribution of Hypervelocity Stars
Creators: name: Rossi, Elena M.
name: Kobayashi, Shiho
name: Sari, Re'em
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We consider the process of stellar binaries tidally disrupted by a supermassive black hole. For highly eccentric orbits, as one star is ejected from the three-body system, the companion remains bound to the black hole. Hypervelocity stars (HVSs) observed in the Galactic halo and S-stars observed orbiting the central black hole may originate from such mechanism. In this paper, we predict the velocity distribution of the ejected stars of a given mass, after they have travelled out of the Galactic potential. We use both analytical methods and Monte Carlo simulations. We find that each part of the velocity distribution encodes different information. At low velocities < 800 km/s, the Galactic Potential shapes universally the observed distribution, which rises towards a peak, related to the Galactic escape velocity. Beyond the peak, the velocity distribution depends on binary mass and separation distributions. Finally, the finite star life introduces a break related to their mass. A qualitative comparison of our models with current observations shows the great potential of HVSs to constrain bulge and Galactic properties. Standard choices for parameter distributions predict velocities below and above ~800 km/s with equal probability, while none are observed beyond ~700 km/s and the current detections are more clustered at low velocities 300-400 km/s. These features may indicate that the separation distribution of binaries that reach the tidal sphere is not flat in logarithmic space, as observed in more local massive binaries, but has more power towards larger separations, enhancing smaller velocities. In addition, the binary formation/evolution process or the injection mechanism might also induce a cut-off at ~ 10 solar radii in the separation distribution.
description: ApJ, 795, 125. The published (ADS) version is more polished and may be preferred
title: Die baden-württembergischen Denkmalpfleger (3)
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 3 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Διαχείριση παραπόνων στον τουρισμό
title: Complaint management in tourism
Creators: name: Γαλανη Χριστινη
Publisher: name: Technical University of Crete
Year: 2022

description: Η παρούσα διπλωματική εργασία μελετά τη διαχείριση παραπόνων στον τουρισμό. Η έκφραση παραπόνων αποτελεί μια πολύτιμη πληροφορία που προσφέρει ο πελάτης και η επιχείρηση οφείλει να την αξιοποιήσει. Μέσω αυτής της διαχείρισης των παραπόνων γνωρίζει καλύτερα τις απαιτήσεις της αγοράς, ώστε βελτιώνοντας τις αδυναμίες της και ικανοποιώντας τις απαιτήσεις των πελατών της αποκτά ανταγωνιστικό πλεονέκτημα.
Αρχικά, στο πλαίσιο της Διοίκησης Ολικής Ποιότητας (ΔΟΠ), η οποία αντιμετωπίζει τους πελάτες ως προέκταση του οργανισμού, παρουσιάζονται οι ορισμοί της ποιότητας και αναλύεται ο τρόπος με τον οποίο οι ανάγκες, οι προσδοκίες και τα σχόλια των πελατών λαμβάνονται υπόψη στον επανασχεδιασμό του προϊόντος/ υπηρεσίας. Επίσης, μέσα από το πρότυπο ISO 10002 γίνεται αναφορά στην ικανοποίηση των πελατών και στη διαχείριση των παραπόνων, η οποία παίζει καθοριστικό ρόλο στην ανάκτηση μια υπηρεσίας (service recovery) και κατ’ επέκταση στην ικανοποίηση του πελάτη που έχει ως αποτέλεσμα τη διαφήμιση ή δυσφήμιση της επιχείρησης.
Στη συνέχεια παρουσιάζεται ο τρόπος με τον οποίο πρέπει να είναι δομημένο ένα αποτελεσματικό σύστημα διαχείρισης παραπόνων, δίνοντας έμφαση στα στάδια και τις διαδικασίες που οφείλει να ακολουθήσει η επιχείρηση έτσι ώστε να δίνεται η δυνατότητα να ακούγεται η «φωνή του πελάτη» (voice of the customer). Στα πλαίσια μιας πελατοκεντρικής φιλοσοφίας, μια εταιρεία οφείλει να δίνει την ευκαιρία στους πελάτες της να παραπονεθούν είτε απευθείας σε καταρτισμένο προσωπικό είτε μέσω τηλεφωνικής γραμμής, μέσω e-mail εξυπηρέτησης πελατών, με φόρμα παραπόνων στην επιχείρηση ή ακόμα και μέσω των λογαριασμών της στα μέσα κοινωνικής δικτύωσης (Social Media).
Εφόσον στη χώρα μας ο τουρισμός αποτελεί έναν από τους σημαντικότερους τομείς της οικονομίας, η συνεχής ανάπτυξη και βελτίωση είναι ο στόχος των επιχειρήσεων που δραστηριοποιούνται σε αυτόν τον τομέα. Οι καταναλωτές-ταξιδιώτες είτε σχεδιάζουν ένα ταξίδι είτε βρίσκονται ήδη σε αυτό δεν περιορίζονται σε συστάσεις και εμπειρίες φίλων, αλλά αναζητούν κριτικές και εμπειρίες άγνωστων ανθρώπων, τόσο στα social media όσο και σε ταξιδιωτικές πλατφόρμες (π.χ. booking.com και tripadvisor.com). Εκατομμύρια κριτικές και απόψεις κάνουν το γύρο του κόσμου επηρεάζοντας τον καταναλωτή στην τελική του απόφαση. Η μόχλευση θετικών κριτικών και η αντιστάθμιση της επιρροής των αρνητικών κριτικών είναι ο βασικός στόχος των επιχειρήσεων.
Στα πλαίσια της συγκεκριμένης εργασίας πραγματοποιήθηκε έρευνα σε ξενοδοχειακές μονάδες για να μελετηθεί κατά πόσο εφαρμόζονται οι απαιτούμενες διαδικασίες της αποτελεσματικής διαχείρισης παραπόνων. Διερευνήθηκε ποιοι είναι αρμόδιοι μέσα στην επιχείρηση και κατά πόσο έχουν εκπαιδευτεί, ποιοι είναι οι δίαυλοι επικοινωνίας με τους πελάτες, πως αντιλαμβάνονται την κριτική από αυτούς, αν διατηρούν ερωτηματολόγιο και ποια πολιτική ακολουθούν προκειμένου ο πελάτης να μην φτάσει στο σημείο να κάνει αρνητική κριτική, που θα έχει ως αποτέλεσμα τόσο την αποτροπή δυνητικών όσο και την απώλεια υπαρχόντων πελατών.
title: In Sachen Nachrichtenblatt
Creators: name: Cichy, Bodo
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 4 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Die Südkirche in Esslingen. Rekonstruktion der ursprünglichen Farbigkeit im Kircheninneren
Creators: name: Bongartz, Norbert
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 8, Nr. 1 (1979), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Die Arbeitersiedlung „Zeppelindorf" bei Friedrichshafen
Creators: name: Krins, Hubert
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 8, Nr. 2 (1979), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Recent progress on global and local polarization of hyperons in heavy-ion collisions
Creators: name: Niida, Takafumi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Since the observation of $Λ$ global polarization at RHIC, indicating the most vortical fluid ever observed so far, many experimental and theoretical progresses have been made in understanding of vorticity and polarization phenomena in heavy-ion collisions. But there still exist open questions which are currently being studied. In these proceedings, recent experimental results on global and local polarization of hyperons in heavy-ion collisions are reviewed.
description: 4 pages, 2 figures, Proceedings of the 14th International Conference on Hypernuclear and Strange Particle Physics (HYP2022)
Split Supersymmetry Under GUT and Current Dark Matter Constraints
Creators: name: Wang, Fei
name: Wang, Wenyu
name: Yang, Jin Min
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We recalculate the two-loop beta functions for three gauge couplings taking into account all low energy threshold corrections in split supersymmetry (split-SUSY) which assumes a very high scalar mass scale M_S. We find that, in split-SUSY with gaugino mass unification assumption and a large M_S, the gauge coupling unification requires a lower bound on gaugino mass. Combined with the constraints from the dark matter relic density and direct detection limits, we find that split-SUSY is very restricted and for dark matter mass below 1 TeV the allowed parameter space can be fully covered by XENON-1T(2017).
description: 20 pages, 7 figures, more details added
title: Eine alte Zehntscheune wird zu neuem Leben erweckt
Creators: name: Scholtz, Richard
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 8, Nr. 2 (1979), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4