cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Search for Dimuon Events in IceCube using Decision Trees
Creators: Aggarwal, Nakul
Publisher: name: University of Alberta Library
Year: 2023

The dominant neutrino-nucleon interaction above 100 GeV is Deep Inelastic Scattering (DIS) in which an incoming neutrino scatters off a quark in the nucleon by exchanging a weak boson, producing an outgoing lepton accompanied by a hadron shower. Two sub-dominant processes are expected to produce two high-energy charged leptons in the final state. The first one is a subset of DIS where a charmed meson is produced, which can decay into a charged lepton. The second one involves the exchange of a weak boson and a photon, resulting in a final state with two charged leptons and a neutrino, in a process known as neutrino trident production (NTP). If an excess of these events is observed above the Standard Model (SM) prediction, it can serve as an indicator of Beyond Standard Model (BSM) physics. Since IceCube Neutrino Observatory has detected thousands of high-energy neutrinos above 100 GeV and has collected over 10 years of data taking, it is an excellent candidate for their search. For the purposes of this work, we consider the channel where the outgoing leptons are muons. Since muons leave a track-like Cherenkov signature in IceCube, our central goal is to search for double-track events (from two muons or dimuons) and separate them from single-track events (from a single muon). In this work, we perform this classification using decision trees.
Minimum weight perfect matching of fault-tolerant topological quantum error correction in average $O(1)$ parallel time
Creators: name: Fowler, Austin G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Consider a 2-D square array of qubits of extent $L\times L$. We provide a proof that the minimum weight perfect matching problem associated with running a particular class of topological quantum error correction codes on this array can be exactly solved with a 2-D square array of classical computing devices, each of which is nominally associated with a fixed number $N$ of qubits, in constant average time per round of error detection independent of $L$ provided physical error rates are below fixed nonzero values, and other physically reasonable assumptions. This proof is applicable to the fully fault-tolerant case only, not the case of perfect stabilizer measurements.
description: 8 pages, 4 figures, version accepted for publication
Axion wind detection with the homogeneous precession domain of superfluid helium-3
Creators: name: Gao, Christina
name: Halperin, W. P.
name: Kahn, Yonatan
name: Nguyen, Man
name: Schütte-Engel, Jan
name: Scott, J. W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Axions and axion-like particles may couple to nuclear spins like a weak oscillating effective magnetic field, the "axion wind." Existing proposals for detecting the axion wind sourced by dark matter exploit analogies to nuclear magnetic resonance (NMR) and aim to detect the small transverse field generated when the axion wind resonantly tips the precessing spins in a polarized sample of material. We describe a new proposal using the homogeneous precession domain (HPD) of superfluid helium-3 as the detection medium, where the effect of the axion wind is a small shift in the precession frequency of a large-amplitude NMR signal. We argue that this setup can provide broadband detection of multiple axion masses simultaneously, and has competitive sensitivity to other axion wind experiments such as CASPEr-Wind at masses below $10^{-7}$ eV by exploiting precision frequency metrology in the readout stage.
description: v2: typos fixed and references added. v1: 5+1 pages, 3 figures
Leveraging Natural language Processing and Machine Learning Techniques to find Frailty Deficits from Clinical Dataset
Creators: Bazrafkan, Mehrnoosh
Publisher: name: University of Alberta Library
Year: 2023

Introduction Frailty is a syndrome that is often associated with aging. It

can be identified through specific frailty scales or a comprehensive assessment

by a healthcare provider. In Alberta, it appears that there are no specific

billing or diagnostic codes for frailty. So, healthcare providers may use specific

assessments or codes related to conditions such as muscle weakness or

decreased physical activity to identify frailty. Purpose This project aims to

leverage Natural Language Processing algorithms to extract frailty keywords

from structured and Unstructured clinical datasets to identify frailty deficits

and classify patients into frail and non-frail classes using Machine Learning

algorithms. Methods The dataset included 450 patients over the age of 60,

medical information related to diseases, and clinical frailty scales. We first

clean medical notes using NLP techniques and removing negation terms, then

extract keywords from clinical notes and structured datasets, and finally, we

use resampling techniques to deal with imbalanced clinical datasets, and we

feed these extracted keywords into machine learning classifiers to classify patients

as frail or not frail. Results There are many different types of machine

learning classifiers that have been used for this task, Random Forest and Decision

Three with 0.95 performed better than LR, KNN, NB, SVM, and neural

network models. Conclusion Natural Language Processing algorithms can

effectively extract frailty keywords using Electronic Medical Record (EMR)

notes. Moreover, comparing the results shows that using both structured and

unstructured data gives better results than using only structured data.
Internal rotation and inclinations of slowly pulsating B stars: Evidence of interior angular momentum transport
Creators: name: Pedersen, May G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: One of the largest uncertainties in stellar structure and evolution theory is the transport of angular momentum in the stellar interiors. Asteroseismology offers a powerful tool for measuring the internal rotation frequencies of pulsating stars, but the number of such measurements has remained few for $\gtrsim 3\,{\rm M}_\odot$ main-sequence stars. In this work, we compile a list of 52 slowly pulsating B stars for which the interior rotation has been measured asteroseismically. The measurements of the spin parameters, which describe the relative importance of rotation, for the gravito-inertial mode oscillations show that for 40 of the stars the oscillations fall within the sub-inertial regime. We find that the core rotation frequencies of the stars decrease as a function of age, and show evidence of angular momentum transport occurring on the main-sequence. Finally, we derive the inclination angles of the stars, showing that they are generally consistent with the expectations from surface cancellation effects for the given oscillation modes.
description: 29 pages, 13 figures, 2 tables. Accepted for publication in ApJ
A consistent scalar-tensor cosmology for inflation, dark energy and the Hubble parameter
Creators: name: Wang, C. H. -T.
name: Reid, J. A.
name: Murphy, A. St J.
name: Rodrigues, D.
name: Alawi, M. Al
name: Bingham, R.
name: Mendonca, J. T.
name: Davies, T. B.
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: A Friedman cosmology is investigated based on scalar-tensor gravitation with general metric coupling and scalar potential functions. We show that for a broad class of such functions, the scalar field can be dynamically trapped using a recently suggested mechanism. The trapped scalar can drive inflation and accelerated cosmic expansion, compatible with standard requirements. The inflationary phase admits a natural exit with a value of the Hubble parameter dictated by the duration of inflation in a parameter independent manner. For inflationary duration consistent with the GUT description, the resulting Hubble parameter is found to be consistent with its observed value.
description: 6 pages; version accepted by PLA
GOALS-JWST: Hidden Star Formation and Extended PAH Emission in the Luminous Infrared Galaxy VV 114
Creators: name: Evans, Aaron S.
name: Frayer, David
name: Charmandaris, Vassilis
name: Armus, Lee
name: Inami, Hanae
name: Surace, Jason
name: Linden, Sean
name: Soifer, Baruch
name: Diaz-Santos, Tanio
name: Larson, Kirsten
name: Rich, Jeffrey
name: Song, Yiqing
name: Barcos-Munoz, Loreto
name: Mazzarella, Joseph
name: Privon, George
name: U, Vivian
name: Medling, Anne
name: Boeker, Torsten
name: Aalto, Susanne
name: Iwasawa, Kazushi
name: Howell, Justin
name: van der Werf, Paul
name: Appleton, Philip N.
name: Bohn, Thomas
name: Brown, Michael
name: Hayward, Christopher
name: Hoshioka, Shunshi
name: Kemper, Francisca
name: Lai, Thomas
name: Law, David
name: Malkan, Matthew
name: Marshall, Jason
name: Murphy, Eric
name: Sanders, David
name: Stierwalt, Sabrina
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: James Webb Space Telescope (JWST) Mid-InfraRed Instrument (MIRI) images of the luminous infrared (IR) galaxy VV 114 are presented. This redshift ~ 0.020 merger has a western component (VV 114W) rich in optical star clusters and an eastern component (VV 114E) hosting a luminous mid-IR nucleus hidden at UV and optical wavelengths by dust lanes. With MIRI, the VV 114E nucleus resolves primarily into bright NE and SW cores separated by 630 pc. This nucleus comprises 45% of the 15um light of VV 114, with the NE and SW cores having IR luminosities, L_ IR (8-1000um) ~ 8+/-0.8x10^10 L_sun and ~ 5+/-0.5x10^10 L_sun, respectively, and IR densities, Sigma_IR >~ 2+/-0.2x10^13 L_sun / kpc^2 and >~ 7+/-0.7x10^12 L_sun / kpc^2, respectively -- in the range of Sigma_IR for the Orion star-forming core and the nuclei of Arp 220. The NE core, previously speculated to have an Active Galactic Nucleus (AGN), has starburst-like mid-IR colors. In contrast, the VV 114E SW has AGN-like colors. Approximately 40 star-forming knots with L_IR ~ 0.02-5x10^10 L_sun are identified, 25% of which have no optical counterpart. Finally, diffuse emission accounts for 40-60% of the mid-IR emission. Mostly notably, filamentary Poly-cyclic Aromatic Hydrocarbon (PAH) emission stochastically excited by UV and optical photons accounts for half of the 7.7um light of VV 114. This study illustrates the ability of JWST to detect obscured compact activity and distributed PAH emission in the most extreme starburst galaxies in the local Universe.
description: 8 pages, 4 figures, 1 table, Submitted to ApJL
Nature of excited $Ξ$ baryons with threshold effects
Creators: name: Nishibuchi, Takuma
name: Hyodo, Tetsuo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Spectroscopy of excited baryons with strangeness $S=-2$ is stimulated by recent experimental developments. Here we focus on the $Ξ(1620)$ which locates close to the $\bar{K}Λ$ threshold. To take into account the threshold effects, we construct the coupled-channels meson-baryon scattering amplitude where the $Ξ(1620)$ appears as a resonance. We demonstrate that the $\bar{K}Λ$ threshold effects distort the peak of the $Ξ(1620)$ resonance from the simple Breit-Wigner distribution.
description: 4 pages, Proceedings of the 14th International Conference on Hypernuclear and Strange Particle Physics (HYP2022), 27 June to 1 July 2022. v2: modified the right panel of the figure2
Burkholderia cenocepacia requires complete lipopolysaccharide to resist bacterial killing agents
Creators: Ruest, Marta K
Publisher: name: University of Alberta Library
Year: 2023

Antibiotic-resistant infections are a growing concern, if this issue is not addressed by the year 2050 these infections will cause ~10 million deaths per year. Traditional antibiotics targeting essential life processes have demonstrated a rapid rate of resistance development. Modern antibiotics should therefore focus on targeting non-essential processes to prevent or at least slow the development of resistance. For this reason, many researchers have placed emphasis on identifying drugs which target virulence processes of antibiotic-resistant bacteria. One process of interest is innate immune resistance as it is the first line of defense against invading pathogens. This study used human serum to simulate innate immune defense including antimicrobial peptides and the complement system. Bacteria have evolved a variety of serum-resistance factors which can be used as novel antibiotic targets. Burkholderia cenocecpacia is an extremely multi-drug resistant (MDR) opportunistic pathogen causing severe and lethal infections in patients with cystic fibrosis (CF). This bacterial species is also capable of producing highly fatal bloodstream infections. Many virulence factors have been characterized for B. cenocepacia yet research on complement-resistance is limited. The purpose of this thesis was to identify serum-resistance factors of B. cenocepacia and potential antibacterials with mechanisms of action involving these factors. Following a mutant library screen, a variety of serum-resistance factors were identified but genes relating to lipopolysaccharide (LPS) biogenesis were recovered with the highest frequency. The inner core portion of the LPS had previously been characterized as playing a role in complement-resistance of B. cenocepacia. However, this study confirmed that the entirety of the LPS is required for survival in the presence of serum in vitro and in vivo. It was also found that complete LPS is necessary for B. cenocepacia to resist the antibiotic colistin. Bacteriophages, or phages, are viruses of bacteria which have long been known to be capable of killing MDR bacteria. There has been a renewed interest in phages as a potential solution to the antibiotic resistance crisis. LPS is a common receptor for phages and following screening of a library of phages four were found to bind the LPS to initiate bacterial infection. Isolation and characterization of phage-resistant mutants revealed that they had truncated LPS and were sensitive to colistin. Combinations of colistin and LPS-binding phages were found to exhibit synergistic killing effects against B. cenocepacia likely through a phage steering mechanism. Altogether, this study associated several genes and their respective known/putative functions with B. cenocepacia’s ability to resist bacterial killing agents in serum. Additionally, a novel treatment combination targeting a serum-resistance factor was identified which has the potential to prevent B. cenocepacia from causing sepsis.
Can the coincidence problem be solved by a cosmological model of coupled dark energy and dark matter?
Creators: name: Poitras, Vincent
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Motivated by the cosmological constant and the coincidence problems, we consider a cosmological model where the dark sectors are interacting together through a phenomenological decay law $\dotρ_Λ=Qρ_Λ^n$ in a FRW spacetime with spatial curvature. We show that the only value of $n$ for which the late-time matter energy density to dark energy density ratio ($r_m=ρ_m/ρ_Λ$) is constant (which could provide an explanation to the coincidence problem) is $n=3/2$. For each value of $Q$, there are two distinct solutions. One of them involves a spatial curvature approaching zero at late times ($ρ_k\approx0$) and is stable when the interaction is weaker than a critical value ${Q_0=-\sqrt{32πG/c^2}}$. The other one allows for a non-negligible spatial curvature ($ρ_k\napprox0$) at late times and is stable when the interaction is stronger than $Q_0$. We constrain the model parameters using various observational data (SNeIa, GRB, CMB, BAO, OHD). The limits obtained on the parameters exclude the regions where the cosmological constant problem is significantly ameliorated and do not allow for a completely satisfying explanation for the coincidence problem.
description: 16 pages, 5 figures
title: Stefan Altekamp und Paul Tiedemann: Internet für Archäologen - eine praxisorientierte Einführung
Creators: name: Siegmund, Frank
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Stefan Altekamp und Paul Tiedemann: Internet für Archäologen - eine praxisorientierte Einführung.Primus-Verlag. Darmstadt 1999
title: Daniel Schyle: Das jungneolithische Erdwerk von Salzkotten-Oberntudorf, Kr. Paderborn: Die Ausgrabungen 1988 bis 1992
Creators: name: Petrasch, Jörg
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Daniel Schyle: Das jungneolithische Erdwerk von Salzkotten-Oberntudorf, Kr. Paderborn: Die Ausgrabungen 1988 bis 1992. Mit Beiträgen von Wolf Dieter Becker, Bernd Langenbrink, Jutta MeurersBalke, Jörg Orschiedt, Ursula Tegtmeier und Jaco Weinstock. Bodenaltertümer Westfalens Bd. 33. Verlag Philipp von Zabern, Mainz am Rhein 1998
Cosmological networks
Creators: name: Boguna, Marian
name: Kitsak, Maksim
name: Krioukov, Dmitri
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Networks often represent systems that do not have a long history of studies in traditional fields of physics, albeit there are some notable exceptions such as energy landscapes and quantum gravity. Here we consider networks that naturally arise in cosmology. Nodes in these networks are stationary observers uniformly distributed in an expanding open FLRW universe with any scale factor, and two observers are connected if one can causally influence the other. We show that these networks are growing Lorentz-invariant graphs with power-law distributions of node degrees. These networks encode maximum information about the observable universe available to a given observer.
Approaching the basis-set limit of the dRPA correlation energy with explicitly correlated and Projector Augmented-wave methods
Creators: name: Humer, Moritz
name: Harding, Michael E.
name: Schlipf, Martin
name: Taheridehkordi, Amir
name: Sukurma, Zoran
name: Klopper, Wim
name: Kresse, Georg
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The direct random-phase approximation (dRPA) is used to calculate and compare atomization energies for the HEAT set and 10 selected molecules of the G2-1 set using both plane waves and Gaussian-type orbitals. We describe detailed procedures to obtain highly accurate and well converged results for the projector augmented-wave (PAW) method as implemented in the Vienna Ab-initio Simulation Package (VASP) as well as the explicitly correlated dRPA-F12 method as implemented in the TURBOMOLE package. The two approaches agree within chemical accuracy (1 kcal/mol) for the atomization energies of all considered molecules, both for the exact exchange as well as for the dRPA. The root mean-square deviation is 0.41 kcal/mol for the exact exchange (evaluated using density functional theory orbitals) and 0.33 kcal/mol for exact exchange plus the random-phase approximation.
description: 16 pages, 2 figures
MATHEMATICAL MODELING OF THE COVID-19 EPIDEMICS
Creators: Han, Donglin
Publisher: name: University of Alberta Library
Year: 2023

Since the COVID-19 outbreak in Wuhan City in December 2019, numerous model predictions on the COVID-19 epidemics in Wuhan have been reported. These model predictions have shown a wide range of variations. In our first study, we demonstrate that nonidentifiability in model calibrations using the confirmed case data is the main reason for such wide variations. Our modeling study indicates that more independent datasets, better inference methods, and fitting algorithms can significantly reduce the nonidentifiable impact. Further study is carried out for modeling the first COVID-19 wave in Alberta. Confirmed case data and testing data, based on the official reports from Alberta Health, are fitted to a mathematical model estimating the total number of the COVID-19 infections. A sensitivity analysis using PRCC is conducted to show that decreasing the initial transmission rate and increasing the probability of health-seeking for an individual are the most effective ways to help control the epidemic.
Impact of clustering inside compact tetraquarks
Creators: name: Sazdjian, Hagop
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Due to the reducibility of tetraquark operators into mesonic clusters, a strong interplay exists in tetraquarks between compact and molecular structures. This issue is studied within an effective field theory approach, where the compact tetraquark is treated as an elementary particle. Under the influence of the coupling to the mesonic clusters, an initially formed compact tetraquark bound state is deformed towards a new structure of the molecular type, having the attributes of a shallow bound state.
description: 7 pages, 5 figures. Talk given at the International Workshop QCD@Work - Theory and Experiment, Lecce (Italy), 27-30 June 2022
Full counting statistics of persistent current
Creators: name: Komnik, A.
name: Langhanke, G. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop a method for calculation of charge transfer statistics of persistent current in nanostructures in terms of the cumulant generating function (CGF) of transferred charge. We consider a simply connected one-dimensional system (a wire) and develop a procedure for the calculation of the CGF of persistent currents when the wire is closed into a ring via a weak link. For the non-interacting system we derive a general formula in terms of the two-particle Green's functions. We show that, contrary to the conventional tunneling contacts, the resulting cumulant generating function has a doubled periodicity as a function of the counting field. We apply our general formula to short tight-binding chains and show that the resulting CGF perfectly reproduces the known evidence for the persistent current. Its second cumulant turns out to be maximal at the switching points and vanishes identically at zero temperature. Furthermore, we apply our formalism for a computation of the charge transfer statistics of genuinely interacting systems. First we consider a ring with an embedded Anderson impurity and employing a self-energy approximation find an overall suppression of persistent current as well as of its noise. Finally, we compute the charge transfer statistics of a double quantum dot system in the deep Kondo limit using an exact analytical solution of the model at the Toulouse point. We analyze the behaviour of the resulting cumulants and compare them with those of a noninteracting double quantum dot system and find several pronounced differences, which can be traced back to interaction effects.
description: 10 pages, 9 eps figures
Hardware-Efficient Logarithmic Floating-Point Multipliers for Error-Tolerant Applications
Creators: Niu, Zijing
Publisher: name: University of Alberta Library
Year: 2023

The deployment of computation-intensive applications, such as digital signal processing (DSP) and machine-learning (ML), on resource-constrained applications is spurring research that aims to increase the power efficiency of the arithmetic circuits that perform a huge amount of computation.

Approximate computing is one of the emerging strategies to reach this objective.

Neural networks (NNs) involve extensive multiply-and-accumulate computations, especially in the training process, where iterative computations incur significant energy consumption. DSP applications, such as image processing, also demands intensive arithmetic computations. In this research project, we focus on the design of hardware-efficient floating-point (FP) multipliers for the energy-efficient implementation of error-tolerant computation-intensive applications using approximate computing techniques.

As an alternative to the conventional FP representation, the logarithmic representation of FP numbers has been considered for the acceleration of NNs. We show that the FP representation is naturally suited for the binary logarithm of numbers and, thus, logarithmic arithmetic. In this thesis, two logarithmic approximation methods are proposed to generate double-sided error distributions that mitigate the accumulative effect of errors introduced in both the logarithm conversion and the anti-logarithm conversion. Hardware-efficient logarithmic FP multipliers are then proposed by using simple operators, such as adders and multiplexers, to replace complex conventional FP multipliers. The radix-4 logarithm is considered to further reduce the hardware complexity.

The proposed multipliers provide superior trade-offs between accuracy and hardware, with up to 30.8% higher accuracy than a recent logarithmic FP design or up to 68x less energy than the conventional FP multiplier.

Using the proposed FP logarithmic multipliers in JPEG image compression achieves higher image quality than the recent multiplier design with up to 4.7 dB larger peak signal noise ratio. For training in benchmark NN applications, including a 922-neuron model for the MNIST dataset, the proposed FP multipliers can slightly improve the classification accuracy while achieving 4.2x less energy and 2.2x smaller area than a state-of-the-art design.
title: [Der Stuttgarter Restauratorenkurs] Unser Beitrag zur Ausbildung von Restauratoren
Creators: name: Straub, Rolf E.
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 8, Nr. 3 (1965): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Solitary states in complex networks: impact of topology
Creators: name: Schülen, Leonhard
name: Mikhailenko, Maria
name: Medeiros, Everton S.
name: Zakharova, Anna
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The dynamical behavior of networked systems is expected to reflect the features of their coupling structure. Yet, symmetry-broken solutions often occur in symmetrically coupled networks. An example is provided by the so-called solitary states where the dynamics of one network node is different from the entire symmetric network. Here, we investigate the structural constraints of networks for the appearance of solitary states in their dynamics. By performing a large number of numerical simulations, we find that such states occur with high probability in asymmetric networks, such as the ones exhibiting the scale-free property. Next, we analyze the structural features of the networks demonstrating solitary states to reveal that the minimum number of connections in the adjacent nodes of a solitary one is crucial for the appearance of the solitary states. Finally, we perform bifurcation analysis of a dimension-reduced system, confirming the influence of the connectivity of the neighboring nodes on the solitary ones.
title: [Der Stuttgarter Restauratorenkurs] Charakteristische Verfallserscheinungen am Leinwandbild
Creators: name: Straub, Rolf E.
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 8, Nr. 3 (1965): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Belief propagation, robust reconstruction and optimal recovery of block models
Creators: name: Mossel, Elchanan
name: Neeman, Joe
name: Sly, Allan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Social and Information Networks (cs.SI)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We consider the problem of reconstructing sparse symmetric block models with two blocks and connection probabilities $a/n$ and $b/n$ for inter- and intra-block edge probabilities, respectively. It was recently shown that one can do better than a random guess if and only if $(a-b)^2>2(a+b)$. Using a variant of belief propagation, we give a reconstruction algorithm that is optimal in the sense that if $(a-b)^2>C(a+b)$ for some constant $C$ then our algorithm maximizes the fraction of the nodes labeled correctly. Ours is the only algorithm proven to achieve the optimal fraction of nodes labeled correctly. Along the way, we prove some results of independent interest regarding robust reconstruction for the Ising model on regular and Poisson trees.
description: Published at http://dx.doi.org/10.1214/15-AAP1145 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: Zur Instandsetzung des Rathauses und der Evangelischen Stadtkirche in Adelsheim (Kr. Buchen)
Creators: name: Heimberger, Heiner
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
Experimental determination of the dissociative recombination rate coefficient for rotationally-cold CH$^{+}$ and its implications for the diffuse cloud chemistry
Creators: name: Paul, Daniel
name: Grieser, Manfred
name: Grussie, Florian
name: von Hahn, Robert
name: Isberner, Leonard W.
name: Kálosi, Ábel
name: Krantz, Claude
name: Kreckel, Holger
name: Müll, Damian
name: Neufeld, David A.
name: Savin, Daniel W.
name: Schippers, Stefan
name: Wilhelm, Patrick
name: Wolf, Andreas
name: Wolfire, Mark G.
name: Novotný, Oldřich
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Observations of CH$^+$ are used to trace the physical properties of diffuse clouds, but this requires an accurate understanding of the underlying CH$^+$ chemistry. Until this work, the most uncertain reaction in that chemistry was dissociative recombination (DR) of CH$^+$. Using an electron-ion merged-beams experiment at the Cryogenic Storage Ring, we have determined the DR rate coefficient of the CH$^+$ electronic, vibrational, and rotational ground state applicable for different diffuse cloud conditions. Our results reduce the previously unrecognized order-of-magnitude uncertainty in the CH$^+$ DR rate coefficient to $\sim \pm 20\%$ and are applicable at all temperatures relevant to diffuse clouds, ranging from quiescent gas to gas locally heated by processes such as shocks and turbulence. Based on a simple chemical network, we find that DR can be an important destruction mechanism at temperatures relevant to quiescent gas. As the temperature increases locally, DR can continue to be important up to temperatures of $ \sim 600\,\mathrm{K} $ if there is also a corresponding increase in the electron fraction of the gas. Our new CH$^+$ DR rate coefficient data will increase the reliability of future studies of diffuse cloud physical properties via CH$^+$ abundance observations.
description: Main paper: PDFLaTeX with 7 pages, 3 figures. Appendix starting on page 7: PDFLaTeX with 11 pages, 2 figures, 4 tables. This article has been accepted by The Astrophysical Journal
Complete systems of partial derivatives of entire functions and frequently hypercyclic operators
Creators: name: Kim, Vitaly E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 47A16, 32A15

description: We find some sufficient conditions for a system of partial derivatives of an entire function to be complete in the space $H(\mathbb{C}^d)$ of all entire functions of $d$ variables. As an appliation of this result we describe new classes of frequently hypercyclic operators on $H(\mathbb{C}^d)$.
description: 11 pages
title: Helmut Maurer, Das Land zwischen Schwarzwald und Randen im frühen und hohen Mittelalter. Freibugr
Creators: name: Keller, Rudi
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 10, Nr. 1 (1967): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Coupled fission fragment angular momenta
Creators: name: Randrup, Jorgen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nuclear fission produces fragments whose spins are coupled to the relative angular motion via angular momentum conservation. It is shown how ensembles of such spins can readily be obtained by either direct microcanonical sampling or by sampling of the associated normal modes of rotation. The resulting distribution of the spin-spin opening angle is illustrated in various three- and two- dimensional scenarios and it is demonstrated how recent mutually conflicting model calculations can be well reproduced with different assumptions about the scission geometry.
description: 5 pages, 5 figures
Analytic Framework for Students' Use of Mathematics in Upper-Division Physics
Creators: name: Wilcox, Bethany R.
name: Caballero, Marcos D.
name: Rehn, Daniel A.
name: Pollock, Steven J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Many students in upper-division physics courses struggle with the mathematically sophisticated tools and techniques that are required for advanced physics content. We have developed an analytical framework to assist instructors and researchers in characterizing students' difficulties with specific mathematical tools when solving the long and complex problems that are characteristic of upper-division. In this paper, we present this framework, including its motivation and development. We also describe an application of the framework to investigations of student difficulties with direct integration in electricity and magnetism (i.e., Coulomb's Law) and approximation methods in classical mechanics (i.e., Taylor series). These investigations provide examples of the types of difficulties encountered by advanced physics students, as well as the utility of the framework for both researchers and instructors.
description: 17 pages, 4 figures, 3 tables, in Phys. Rev. - PER
Wide Speed Control of Permanent Magnet Synchronous Motors with Improved Torque Capacity
Creators: Moscardi Pauka, Gabriel
Publisher: name: University of Alberta Library
Year: 2023

This research deals with wide speed control of permanent magnet synchronous machines (PMSMs) driven by voltage-source converters (VSCs). The objective is to develop a current control algorithm that allows said machines to optimize their torque for any speeds within their operational range, for any torque requested: from maximum motoring torque to maximum regenerative braking, including a no torque operation known as "coasting" This optimization will have as main objective to minimize the amount of current needed to maximize the machine's torque for a certain operating point, while taking into consideration the current and voltage limitations of the VSC and the machine in a wide-speed operation, which requires the need of field-weakening, where a portion of the machine's current is dedicated to weaken its permanent magnets in order to reduce its induced voltage. It is also discussed the concepts of finite and infinite speed machines, which difference is having valid operating points up to a maximum speed or for any rotational speeds. In order to reach this goal, the first step is to analyze the mathematical modeling of PMSMs in the dq-frame in a MATLAB script, and, with the aid of a graphical interpretation of those equations, regions of operation and boundary conditions are defined in order to determine which equations of the algorithm must be used for the reference currents generation. The mathematical modeling is then proven in a PLECS simulation, showing that the algorithm developed can be executed in a two-level three-phase VSC, successfully controlling the machine. This serves as a base for an experimental implementation of a small-scale PMSM using dSPACE MicroLabBox. The experimental results prove the control algorithm is capable of achieving its goals in a VSC-driven PMSM.
title: Neuentdeckung einer romanischen Plastik an der Martinskirche zu Stuttgart-Plieningen
Creators: name: Metzger, Wolfgang
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 10, Nr. 2 (1967): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Barrow holographic dark energy models in $f\left( Q\right)$ symmetric teleparallel gravity with Lambert function distribution
Creators: name: Koussour, M.
name: Shekh, S. H.
name: Filali, H.
name: Bennai, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The paper presents Barrow holographic dark energy (infrared cut-off is the Hubble horizon) suggested by Barrow recently (Physics Letters B 808 (2020): 135643) in an anisotropic Bianchi type-I Universe within the framework of $% f\left( Q\right) $ symmetric teleparallel gravity, where the non-metricity scalar $Q$ is responsible for the gravitational interaction. We consider two cases: Interacting and non-interacting models of pressureless dark matter and Barrow holographic dark energy by solving $f\left( Q\right) $ symmetric teleparallel field equations. To find the exact solutions of the field equations, we assume that the time-redshift relation follows a Lambert function distribution as $t\left( z\right) =\frac{mt_{0}}{l}g\left( z\right) $, where $g\left( z\right) =LambertW\left[ \frac{l}{m}e^{\frac{l-\ln \left( 1+z\right) }{m}}\right] $, $m$ and $l$ are non-negative constants and $t_{0}$ represents the age of the Universe. Moreover, we discuss several cosmological parameters such as energy density, equation of state (EoS) and skewness parameters, squared sound speed, and $(ω_{B}-ω_{B}^{^{\prime }})$ plane. Finally, we found the values of the deceleration parameter (DP) for the Lambert function distribution as $q_{(z=0)}=-0.45$ and $q_{(z=-1)}=-1$ which are consistent with recent observational data, i.e. DP evolves with cosmic time from initial deceleration to late-time acceleration.
description: IJGMMP accepted version
The strangeness program at GlueX
Creators: name: Pauli, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The GlueX experiment located at Jefferson Lab studies the spectrum of hadrons using photoproduction on a LH$_2$ target in a wide variety of final states. With its detector system capable of measuring neutral and charged final state particles over almost the full solid angle, and very good particle identification capabilities, GlueX can measure many different hadrons containing strangeness. A linearly polarized photon beam allows the measurement of polarization observables, which contain information about the production mechanisms involved in generating strange particles in photoproduction. In addition, GlueX can perform precise cross-section measurements, which help to study the spectrum of strange hadrons. In this presentation, the GlueX experiment is introduced, and recent progress of its strangeness program is discussed. We present recent results on $Σ^0$ beam asymmetries, $Λ$(1520) spin-density matrix elements and ongoing studies of the $Λ$(1405) lineshape. We also present our recent progress on measurements of $Λ\barΛ$ and $Ξ^{(*)}$ photoproduction. Also, future prospects for strangeness measurements at GlueX are discussed.
description: 8 pages, Proceedings of the 14th International Conference on Hypernuclear and Strange Particle Physics (HYP2022), 27 June to 1 July 2022
title: Personalia
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 10, Nr. 2 (1967): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: [Zweiter Stuttgarter Restauratorenkurs] Techniken der fotografischen Dokumentation für den Restaurator
Creators: name: Denninger, Edgar
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 10, Nr. 3 (1967): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Scheinwerferlicht auf den Stifiskirchenturm in Hechingen?
Creators: name: Heck, Oscar
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 10, Nr. 3 (1967): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Real-Time Steam Allocation Optimization
Creators: Sibaweihi, Najmudeen
Publisher: name: University of Alberta Library
Year: 2023

Traditionally, reservoir model-based open-loop optimization is used to allocate an amount of steam to each injector well. In Steam-Assisted Gravity Drainage (SAGD) recovery, the optimal real-time steam allocation from a shared steam generator to physically connected multi-pads can significantly improve long-term performance goals. However, in real-time optimization (RTO), general-purpose optimization algorithms decide based on short-term responses, unlike long-term optimization processes. Using economic Key Performance Indicators (KPI) such as Net Present Value (NPV) in a single objective, the RTO determines the smallest amount of steam allocation that results in the highest economic returns. Injecting a small amount of steam reduces steam chamber heat loss, growth, and long-term ultimate bitumen recovery. Furthermore, when the oil price is volatile, maximizing steam allocation and non-condensable gas (NCG) at the wind-down stage is essential to ensuring a profit while reducing risk. This research addresses the SAGD RTO workflow limitations of handling oil price volatility and balancing steam chamber development and economics to achieve long-term goals.

An adaptive data-driven predictive model developed based on typical Athabasca oil reservoir properties is employed for real-time short-term forecasting of the KPI, reducing the computational cost. A modified version of Modigliani's risk-adjusted performance is proposed and integrated into the workflow as a tradeoff selector of expected returns and risk when handling oil price volatility. Additionally, the workflow is tested on multi-pad steam allocation using an Alternating Direction Method of Multipliers (ADMM) for single-, multi- and many-objective optimization problems. Finally, an alternating set of RTO objectives is proposed to ensure that both short- and long-term KPIs are achieved.

The performance of the RTO workflow introduced is tested on single and multi-pad field scale SAGD first principle models. In addition, the cases are designed to mimic SAGD operations steam availability, wind-down, single, multi, and many objective RTO. The impact of the developed workflow is the improved short-term strategies, improved long-term economics, and reduced carbon footprints
Adaptive Network Protocol Selection: A Machine-Learning Approach
Creators: Anvari, Hamidreza
Publisher: name: University of Alberta Library
Year: 2023

We introduce "optimization through protocol selection" (OPS) as a technique to improve bulk-data transfer on shared wide-area networks (WANs). Instead of tuning the parameters of a network protocol, our empirical results show that the selection of the protocol itself can result in up to four times higher throughput in some key cases. However, OPS for the foreground traffic (e.g., TCP CUBIC, TCP BBR) depends on knowledge about the network protocols used by the background traffic (i.e., other users). Yet, global knowledge can be difficult to obtain in a dynamic distributed system like a WAN.

Therefore, we introduce and evaluate a machine-learning (ML) approach for recognizing the background mix of protocols on a shared network. We build and empirically evaluate several ML classifiers, trained on local round-trip time (RTT) time-series data gathered using "passive probing" or "active probing", to recognize the mix of TCP CUBIC versus TCP BBR congestion control algorithms (CCAs) in the background with an accuracy of up to 95%. Then, a decision process selects the best protocol to use for the new foreground transfer, so as to maximize throughput while maintaining fairness (i.e., OPS).

Lastly, we describe the design, implementation, and evaluation of iPerfOPS, the first tool that uses OPS to perform bulk-data transfer. The new tool is a substantially modified version of the well-known iPerf tool, and is an end-to-end implementation that incorporates previous research results. Our evaluation of iPerfOPS shows a bandwidth utilization close to the fair (i.e., equal) sharing if used with an appropriate probing pattern.
Generalized Choquet spaces
Creators: name: Coskey, Samuel
name: Schlicht, Philipp
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We introduce an analog to the notion of Polish space for spaces of weight $\leqκ$, where $κ$ is an uncountable regular cardinal such that $κ^{κ$ are isomorphic by a $κ$-Borel function. We then consider a dynamic version of the Choquet game and show that in this case the existence of a winning strategy for player II implies the existence of a winning tactic, that is, a strategy that depends only on the most recent move. We also study a generalization of Polish ultrametric spaces where the ultrametric is allowed to take values in a set of size $κ$. We show that in this context, there is a family of universal Urysohn-type spaces, and we give a characterization of such spaces which are hereditarily $κ$-Baire.
title: Der Museumsbau in Sigmaringen
Creators: name: Hohenzollern, Johann Georg Prinz Von
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 10, Nr. 4 (1967): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Denkmalpflege im Kreis Lahr
Creators: name: Hesselbacher, Martin
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 10, Nr. 4 (1967): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4