cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Learning Effectiveness of Semester and Year-Long Study Abroad Programmes: Perspectives of International Students in a UK and China Context
Creators: name: O'Dea, Xianghan (Christine)
Publisher: name: figshare
Year: 2023
Subjects: Higher education
Comparative and cross-cultural education
Educational technology and computing
Inclusive education
Learning analytics
Multicultural education (excl. Aboriginal and Torres Strait Islander, Māori and Pacific Peoples)

description: Research on international students’ learning experiences pays much less attention to those studying semester and/or year-long programmes in a country that differs significantly from their home country with respect to culture and the education system. Adopting transformative learning theory as the theoretical framework, this paper explores the learning effectiveness of students on such programme in a Chinese and in a UK university. It analyses the narratives of 27 students in relation to their cognitive and behavioural activities and also their self-reflective and collaborative reflective activities. The findings indicate that these students only partially achieved transformative learning. The main reasons are: (1) the duration of this type of programme was not long enough to achieve a full transformation and (2) both host universities did not include reflection in the learning process properly. This paper makes a contribution to cross-border learning literature in the Chinese and the UK contexts.
Global gravitational anomaly cancellation for five-branes
Creators: name: Monnier, Samuel
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81T50, 81T30, 83E30

description: We show that the global mixed gauge-gravitational anomaly of the worldvolume theory of the M5-brane vanishes, when the anomaly inflow from the bulk is taken into account. This result extends to the type IIA and heterotic $E_8 \times E_8$ five-branes. As a by-product, we provide a definition of the chiral fermionic fields for generic non-spin M5-brane worldvolume and determine the coupling between the self-dual field and the M-theory C-field.
description: 22 pages. v3: Minor improvements and references added. Version accepted for publication in ATMP
Relativistic effects on electronic pair densities: a perspective from the radial intracule and extracule probability densities
Creators: name: Rodríguez-Mayorga, Mauricio
name: Keizer, Daniël
name: Giesbertz, Klaas J. H.
name: Visscher, Luuk
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: While the effect of relativity in the electronic density has been widely studied, the effect on the pair probability, intracule, and extracule densities has not been studied before. Thus, in this work, we unveil new insights related to changes on the electronic structure caused by relativistic effects. Our numerical results suggest that the mean inter-electronic distance is reduced (mostly) due to scalar-relativistic effects. As a consequence, an increase of the electron-electron repulsion energy is observed. Preliminary results suggest that this observation is also valid when electronic correlation effects are considered.
De Novo Synthesis of Bicyclic Carbohydrates and Polyhydroxylated Lipids
Creators: Silva Cunha, Vitor L.
Publisher: name: University of Alberta Library
Year: 2023

The de novo synthesis of carbohydrates is the preparation of sugars from achiral precursors using asymmetric catalysis. This approach can enable the synthesis of targets that are difficult to achieve using the chiral pool. Furan derivatives are widely used precursors in de novo strategies, via a combination of reactions such as the Noyori asymmetric transfer hydrogenation (ATH), Achmatowicz rearrangement, and palladium-catalyzed glycosylation. In this thesis, these reactions were explored in the preparation of bicyclic carbohydrates and polyhydroxylated lipids from achiral ketoenolester precursors.

The first targets of this thesis were the bicyclic monosaccharide bradyrhizose and its oligosaccharides. This carbohydrate is a component of the lipopolysaccharide (LPS) of some strains of nitrogen-fixing bacteria. A novel de novo route was envisioned for the preparation of bradyrhizose and its α-(1→7)-disaccharide via a common cyclic dienone intermediate, which was obtained from 2-acetylfuran. Attempts at using this intermediate in a Pd-glycosylation strategy for the synthesis of the disaccharide were not successful. A route to the monosaccharide was extensively investigated but was not completed due to problems in establishing the correct configuration at one stereocentre of the molecule. Bradyrhizose diastereomers were prepared in these studies and were analyzed for their isomeric composition in D2O.

The next targets of this work were the polyhydroxylated lipids avocadyne, avocadene and avocadane, as well as all their stereoisomers. These lipids are fatty alcohols found in avocados, and have diverse biological applications. A library of 12 compounds was prepared in three to five steps from a common achiral acylpyruvate precursor via a combination of Noyori ATH and diastereoselective reductions. The compounds were used in structure–activity relationships studies for their anti-leukemic activity.

The final targets of this thesis were lactone and lactol analogues of the bicyclic octodiose from the aminoglycoside antibiotic apramycin. These analogues were successfully prepared from 2-acetylfuran via Noyori ATH, Achmatowicz rearrangement, and isocyanate annulation reactions. The use of both the lactone and the lactol in glycosylation reactions was investigated in preliminary studies, and the lactol will be further investigated for its potential use as an acceptor in dual B-/Pd-catalyzed glycosylations.
title: Urs Boeck, Die Tübinger Stadtkirche, Tübingen
Creators: name: H., ...
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
Constraining leptonic emission scenarios for the PeVatron candidate HESS J1702-420 with deep XMM-Newton observations
Creators: name: Giunti, L.
name: Acero, F.
name: Khelifi, B.
name: Kosack, K.
name: Lemiere, A.
name: Terrier, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The unidentified TeV source HESS J1702-420 has recently been proposed as a new hadronic PeVatron candidate, based on the discovery of a small-scale emission sub-region with extremely hard gamma-ray spectrum up to 100 TeV (named HESS J1702-420A). Given the difficulty to discriminate between a hadronic or leptonic origin of the TeV emission, based on the H.E.S.S. measurement alone, we opted for a multi-wavelength approach. A deep X-ray observation was carried out using the XMM-Newton satellite, with the goal of probing a possible association with a hidden leptonic accelerator. No evidence of a clear counterpart for HESS J1702-420A was found in the X-ray data. After excluding an association with all nearby X-ray point sources, we derived strict upper limits on the diffuse X-ray emission and average magnetic field in the HESS J1702-420A region. We additionally report the serendipitous discovery of a new extended X-ray source, whose association with HESS J1702-420A is not obvious but cannot be ruled out either. A set of scripts dedicated to the multi-wavelength modeling of X-ray and gamma-ray data, based on Gammapy, Naima and Xspec, was developed in the context of this work and is made publicly available along with this paper.
description: Accepted for publication in Astronomy & Astrophysics, 13 pages, 11 figures, 3 tables
Covariograms generated by valuations
Creators: name: Averkov, Gennadiy
name: Bianchi, Gabriele
Publisher: name: arXiv
Year: 2013
Subjects: subject: Metric Geometry (math.MG)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60D05, 52A38, 52A39, 42B10

description: Let ϕbe a real-valued valuation on the family of compact convex subsets of \mathbb{R}^n and let K be a convex body in \mathbb{R}^n. We introduce the ϕ-covariogram g_{K,ϕ} of K as the function associating to each x \in \mathbb{R}^n the value ϕ(K \cap (K+x)). If ϕis the volume, then g_{K,ϕ} is the covariogram, extensively studied in various sources. When ϕis a quermassintegral (e.g., surface area or mean width) g_{K,ϕ} has been introduced by Nagel. We study various properties of ϕ-covariograms, mostly in the case n=2 and under the assumption that ϕis translation invariant, monotone and even. We also consider the generalization of Matheron's covariogram problem to the case of ϕ-covariograms, that is, the problem of determining an unknown convex body K, up to translations and point reflections, by the knowledge of g_{K,ϕ}. A positive solution to this problem is provided under different assumptions, including the case that K is a polygon and ϕis either strictly monotone or ϕis the width in a given direction. We prove that there are examples in every dimension n\geq3 where K is determined by its covariogram but it is not determined by its width-covariogram. We also present some consequence of this study in stochastic geometry.
description: IMRN (International Mathematics Research Notices)
Exploring Timescale in Language Comprehension with EEG
Creators: Ling, Sijie
Publisher: name: University of Alberta Library
Year: 2023

As we listen to spoken language, the brain performs multiple levels of computation, from understanding individual words to comprehending the arc of a story. Recently, computational models have been developed that also process text on multiple levels. These models, called multi-timescale long short-term memory (MTLSTM) models, use information from different timescales to predict the next word in a sequence. However, the link between these MTLSTMs and the brain has not been explored. Here, we use electroencephalogram (EEG) recorded when subjects (n=19) passively listen to the first chapter of Alice's Adventures in Wonderland by Lewis Carroll. We train ridge regression models that use patterns in the EEG to predict the different timescales of an MTLSTM model processing the same text. We find that segments of EEG signals can reliably predict the MTLSTM semantic representations of different timescales. For long timescales, the prediction accuracy is significant for most of the -2s to 2s window surrounding the onset of a word. For short timescales, prediction is significant in a short period around the onset of a word. We also observe reliable predictions for the short timescale at time points distant from word onset (-1s, 2.2s). This indicates that the timescales of the MTLSTM model have a connection to language understanding in the brain, while the brain has a complicated strategy, including anticipating and recalling short timescale information. The findings of this work give insight into the brain's timeline of efficiently managing different types of information. Additionally, they indicate the similarities and differences between the computational models and the brain in language processing.
Modeling and Control for Renal Anemia Treatment with Erythropoietin Using Physics-Informed Neural Network
Creators: Zhang, Zhongyu
Publisher: name: University of Alberta Library
Year: 2023

Patients with renal anemia are usually treated with recombinant human erythropoietin (EPO) because of insufficient renal EPO secretion. Clinically, this treatment process is labor intensive. It requires trained personnel to assess monthly Hgb levels, consider intra-patient variability and make adjustments every 2 or 4 weeks based on their experience. The purpose of this paper is to develop decision supporting tools to help medical personnel design optimal treatment plans. The establishment of a good hemoglobin (Hgb) response model is a necessary prerequisite for dose optimization design. First we apply physical-informed neural networks (PINN) to build the Hgb response model under EPO treatment. Neural network training is guided by the physiological model to avoid overfitting problems. During the training process, the parameters of the physiological model can be estimated simultaneously. To handle differential equations with impulse inputs and time delays, we propose approximate analytical expressions for the pharmacokinetic (PK) model and weighted formulations for the pharmacology (PD) model, respectively. The improved PK/PD model was incorporated into PINN for training. Tests on simulated data and clinical data show that the proposed method has better performance than the simple data-driven modeling method and the traditional physiological modeling based on the least squares method. But the original PINN does not allow control input, nor can it receive changing initial states, which indicates the original neural network architecture is not suited for the prediction model. In this context, we apply the new physics-informed neural networks for control (PINNC) which is enhanced with network input interfaces for control actions and initial states. This new structure enables the model predictive control (MPC) design for renal anemia treatment. The generated optimal EPO dosage value can be considered as a decision supporting information.
title: Die baden-württembergischen Denkmalpfleger (1)
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
Hyperonic equation of state at finite temperature for neutron stars
Creators: name: Kochankovski, Hristijan
name: Ramos, Angels
name: Tolos, Laura
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We review the composition and the equation of state of the hyperonic core of neutron stars at finite temperature within a relativistic mean-field approach. We make use of the new FSU2H* model, which is built upon the FSU2H scheme by improving on the Xi potential according to the recent analysis on the Xi atoms, and we extend it to include finite temperature corrections. The calculations are done for a wide range of densities, temperatures and charge fractions, thus exploring the different conditions that can be found in protoneutron stars, binary mergers remnants and supernovae explosions. The inclusion of hyperons has a strong effect on the composition and the equation of state at finite temperature, which consequently would lead to significant changes in the properties and evolution of hot neutron stars.
description: 4 pages, 1 figure, Conference proceeding HYP2022
Addressing Diameter Non-uniformity in the Melt Spinning of Asphaltenes-Derived Carbon Fibres
Creators: Phan, Calvin
Publisher: name: University of Alberta Library
Year: 2023

Asphaltenes offer a cheap alternative to the predominant precursor currently used in the manufacture of carbon fibres. Melt spinning is typically employed for transforming asphaltenes into a fibrous form but faces two challenges: inconsistent or poor spinnability and a large diameter variation in the product. This work investigates the diameter variation by separating the variation into a time-dependent component, “relative thinning rate,” and a time-independent component, “fluctuation.” The effects of heat treatment of the asphaltenes precursor prior to spinning near the spinning temperature and delaying the beginning of spinning were explored. Neither methods could completely mitigate thinning but both methods were successful in reducing diameter fluctuation, although delaying the beginning of spinning proved to be more effective. It is suggested that cross-linking and a small amount of cracking could explain results from thermogravimetry and nuclear magnetic resonance. No conclusive trends about the composition, density, and rheology changes with spinning time were observed. The effect of diameter variation on tensile properties was tested but remain inconclusive due to insufficient sample size. Low tensile strengths may also be associated with unoptimized oxidation and carbonization conditions as well as particulate matter that either passed filtration or formed before solidification of the thread line during melt spinning.
title: Konservierung eines römischen Bades in Rottweil
Creators: name: Planck, Dieter
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
Thermodynamic pressure for massless QCD and the trace anomaly
Creators: name: Weldon, H. Arthur
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: From statistical mechanics the trace of the thermal average of any energy-momentum tensor is $\langle T^μ_{\;\;μ}\rangle =T\partial P/\partial T-4P$. The renormalization group formula $\langle T^μ_{\;\;μ}\rangle =β(g_{M})\partial P/\partial g_{M}$ for QCD with massless fermions requires the pressure to have the structure \begin{equation} P=T^{4}\sum_{n=0}^{\infty} ϕ_{n}(g_{M})\big[\ln\big({M\over 4πT}\big)\big]^{n},\end{equation} where the factor $4π$ is for later convenience. The functions $ϕ_{n}(g_{M})$ for $n\ge 1$ may be calculated from $ϕ_{0}(g_{M})$ using the recursion relation $n\,ϕ_{n}(g_{M})=-β(g_{M})dϕ_{n-1}/dg_{M}$. This is checked against known perturbation theory results by using the terms of order $(g_{M})^{2}, (g_{M})^{3}$, $(g_{M})^{4}$ in $ϕ_{0}(g_{M})$ to obtain the known terms of order $(g_{M})^{4}, (g_{M})^{5}$, $(g_{M})^{6}$ in $ϕ_{1}(g_{M})$ and the known term of order $(g_{M})^{6}$ in $ϕ_{2}(g_{M})$. The above series may be summed and gives the same result as choosing $M=4πT$, viz. $T^{4}ϕ_{0}(g_{4πT})$.
description: 4 pages. Error corrected in Sec III.A now gives complete agreement with Ref [11]
Consumers' Knowledge, Opinions, and Attitudes Toward Safety in Selected Food Items: A Preliminary Summary Report
Creators: name: National Economic Analysis Division, Economic Research Service
name: National Economic Analysis Division, Economic Research Service
Publisher: name: Unknown
Year: 1974
Subjects: Food Consumption/Nutrition/Food Safety

description: Excerpts from the report: Federal and State inspection laws have been designed to assure the consumer that meat and poultry products are wholesome and properly labeled, thus helping to guard against foodborne illness caused by bacteria or insanitary processing. Nevertheless, the incidence of foodborne illness continues to be of great concern. A sizable proportion of the reported cases of foodborne illnesses has been traced to foods prepared or eaten in the home. At present, insanitary food handling practices are among the weakest links in the chain of food protection in the United States. Interest generated by Congress, public health services, and other concerned groups has resulted in an intensified effort to plan consumer education programs. To facilitate them, a survey to evaluate consumer awareness of and attitudes toward food safety practices in the home was deemed necessary to provide essential guides for planning. Similarly, such a study should aid in identifying those groups of people having the greatest need for food safety information. Data for this preliminary report were collected during June and July 1974 from 2,197 respondents throughout the continental United States. This preliminary report focuses primarily on respondents' behavior and attitudes toward food safety practices as they relate to salmonellosis, one of the leading communicable disease problems of bacterial origin in the United States.
Optical-Radio Position Offsets are Inversely Correlated with AGN Photometric Variability
Creators: name: Secrest, Nathan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using photometric variability information from the new Gaia DR3 release, I show for the first time that photometric variability is inversely correlated with the prevalence of optical-radio position offsets in the active galactic nuclei (AGNs) that comprise the International Celestial Reference Frame (ICRF). While the overall prevalence of statistically significant optical-radio position offsets is $11\%$, objects with the largest fractional variabilities exhibit an offset prevalence of only $\sim2\%$. These highly variable objects have redder optical color and steeper optical spectral indices indicative of blazars, in which the optical and radio emission is dominated by a line-of-sight jet, and indeed nearly $\sim100\%$ of the most variable objects have $γ$-ray emission detected by Fermi LAT. This result is consistent with selection on variability preferentially picking jets pointed closest to the line-of-sight, where the projected optical-radio position offsets are minimized and jet emission is maximally boosted in the observed frame. While only $\sim9\%$ of ICRF objects exhibit such large photometric variability, these results suggest that taking source variability into account may provide a means of optimally weighting the optical-radio celestial reference frame link.
description: 8 pages, 5 figures, accepted for publication in ApJ Letters. Code and data are available upon request
Scale-invariance as the origin of dark radiation?
Creators: name: Gorbunov, Dmitry
name: Tokareva, Anna
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent cosmological data favour R^2-inflation and some amount of non-standard dark radiation in the Universe. We show that a framework of high energy scale invariance can explain these data. The spontaneous breaking of this symmetry provides gravity with the Planck mass and particle physics with the electroweak scale. We found that the corresponding massless Nambu--Goldstone bosons -- dilatons -- are produced at reheating by the inflaton decay right at the amount needed to explain primordial abundances of light chemical elements and anisotropy of the cosmic microwave background. Then we extended the discussion on the interplay with Higgs-inflation and on general class of inflationary models where dilatons are allowed and may form the dark radiation. As a result we put a lower limit on the reheating temperature in a general scale invariant model of inflation.
description: 15 pages, 4 figures; v2: replaced with revised version recently published
title: Restaurierung der Gabler-Orgel in Ochsenhausen
Creators: name: Supper, Walther
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
BASS XXXIII: Swift-BAT blazars and their jets through cosmic time
Creators: name: Marcotulli, L.
name: Ajello, M.
name: Urry, C. M.
name: Paliya, V. S.
name: Koss, M.
name: Oh, K.
name: Madejski, G.
name: Ueda, Y.
name: Baloković, M.
name: Trakhtenbrot, B.
name: Ricci, F.
name: Ricci, C.
name: Stern, D.
name: Harrison, F.
name: Powell, M. C.
name: Collaboration, BASS
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We derive the most up-to-date Swift-Burst Alert Telescope (BAT) blazar luminosity function in the 14-195 keV range, making use of a clean sample of 118 blazars detected in the BAT 105-month survey catalog, with newly obtained redshifts from the BAT AGN Spectroscopic Survey (BASS). We determine the best-fit X-ray luminosity function for the whole blazar population, as well as for Flat Spectrum Radio Quasars (FSRQs) alone. The main results are: (1) at any redshift, BAT detects the most luminous blazars, above any possible break in their luminosity distribution, which means we cannot differentiate between density and luminosity evolution; (2) the whole blazar population, dominated by FSRQs, evolves positively up to redshift z~4.3, confirming earlier results and implying lower number densities of blazars at higher redshifts than previously estimated. The contribution of this source class to the Cosmic X-ray Background at 14-195 keV can range from 5-18%, while possibly accounting for 100% of the MeV background. We also derived the average 14 keV-10 GeV SED for BAT blazars, which allows us to predict the number counts of sources in the MeV range, as well as the expected number of high-energy (>100 TeV) neutrinos. A mission like COSI, will detect 40 MeV blazars and 2 coincident neutrinos. Finally, taking into account beaming selection effects, the distribution and properties of the parent population of these extragalactic jets are derived. We find that the distribution of viewing angles is quite narrow, with most sources aligned within < 5° of the line of sight. Moreover, the average Lorentz factor, <$Γ$>= 8-12, is lower than previously suggested for these powerful sources.
description: Accepted for publication in the Astrophysical Journal; 33 pages; 8 Tables; 16 Figures
Heavy, Holy, and Homey: The Role of Religious Imagery in Heavy Metal Album Covers
Creators: Soares Espindola, Mariana
Publisher: name: University of Alberta Library
Year: 2023

This thesis offers an iconographical analysis of the album cover of Temple of Shadows by Brazilian power metal band Angra, situating it within the context of heavy metal visual culture. It argues, through a post-colonial lens, that instead of focusing on religious blasphemy, violence, and confrontation, the cover of Temple of Shadows uses religious iconography to communicate a message about the band’s cultural identity and negotiate membership in the international and domestic heavy metal scenes. This argument is a response to Marcus Moberg’s critique of the metal studies literature on the relationship between metal and religion, which tends to favour the topics of Satanism and moral panic, simplifying the subject and reinforcing stereotypical understandings of this ontological relationship. The thesis also offers directions for possible further research on the topic from a visual culture perspective.
A Denoiser Scaling Technique for Plug-and-Play MPI Reconstruction
Creators: name: Gungor, Alper
name: Aşkın, Barış
name: Alptekin Soydan, Damla
name: Saritas, Emine Ulku
name: Top, Can Barış
name: Çukur, Tolga
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: Image reconstruction based on the system matrix in magnetic particle imaging (MPI) involves an ill-posed inverse problem, which is often solved using iterative optimization procedures that use regularization. Reconstruction performance is highly dependent on the quality of information captured by the regularization prior. Learning-based methods have been recently introduced that significantly improve prior information in MPI reconstruction. Yet, these methods can perform suboptimally under drifts in the image scale between the training and test sets. In this study, we assess the influence of scale drifts on the performance a recent plug-ang-play method (PP-MPI) that uses a pre-trained denoiser. We introduce a new denoiser scaling technique that improves reliability of PP-MPI against deviations in image scale. The proposed technique enables high quality reconstructions that are robust against scale drifts between training and testing sets.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
title: Eduard M. Neuffer: Der Reihengtäberfriedhof von Donzdorf, Krs. Göppingen Band 2 der „Forschungen und Berichte zur Vor- und Frühgeschichte in Baden- Württemberg". Herausgegeben vom Landesdenkmalamt Baden-Württemberg. Verlag Müller &. Gräff, Stuttgart. 1972
Creators: name: Fingerling, Gerhard
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: Inhalt
Creators: name: Redaktion, Die
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
A Thin-Film Model to Characterize a Luminescent Solar Concentrator for Higher Efficiency Electricity Generation
Creators: Jayamaha, Don Jehan Savio Reshon
Publisher: name: University of Alberta Library
Year: 2023

A Luminescent Solar Concentrator (LSC) is a device that consists of a transparent plate with photovoltaic (PV) cells connected to one or more sides. The transparent plate functions as a waveguide and contains luminescent particles, such as organic dyes or quantum dots. The luminescent particles absorb sunlight and part of the re-emitted rays is guided towards the edges of the LSC by total internal reflection, where light is converted to electrical energy from the PV cells. The efficiency of the received sunlight directed to the edges of the LSC is determined by the size of the waveguide and the luminescent particles. This thesis outlined the important characteristics of the LSC, such that we can optimize its optical efficiency for best performance. Here, red-dye (Lumogen F 305) and silicon quantum dots (Si-QDs) were studied, and their application to the LSC was simulated by modifying the physics of the photon interaction.

Initially, a red-dye-based LSC model was simulated in ray-tracing software. The LSC simulation results are compared to existing experimental measurements. After the validation of results, the ray-tracing method was extended to the silicon quantum dot-based thin-film LSC model. Quantum dots were found to be a good luminescent particles for LSCs since they have a large Stokes shift, which reduces the re-absorption loss. Later, a silicon quantum dot thin-film LSC model was simulated, in which, a ray-tracing simulation model is developed to study the optical efficiency of a given LSC structure. The model consists of a low-iron glass with a copolymer film known as Poly (butyl methacrylate-co-methyl methacrylate) and silicon quantum dots embedded in it. The quantum dot characteristics were changed in this model, and the optical efficiencies were recorded. The models were used to present different parameter studies of the LSC to optimize performance.
title: Ein römischer Gutshof bei Inzigkofen, Kreis Sigmaringen
Creators: name: Reim, Hartmann
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
title: Ein alamannischer Friedhof bei Fridingen a.D., Kreis Tuttlingen
Creators: name: Reim, Hartmann
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
On Advances in LAS Instrumentation and Fiducial Volume Simulations of the S140 Detector for the NEWS-G Dark Matter Search Experiment
Creators: Garrah, Carter D
Publisher: name: University of Alberta Library
Year: 2023

NEWS-G is a direct detection dark matter experiment specializing in gas-ionization detectors called Spherical Proportional Counters (SPCs) to search for low-mass par- ticle dark matter. Principal measurement campaigns undergone by NEWS-G, pre- viously at the Laboratoire Souterrain de Modane (LSM) and currently at SNOLAB, have used a large-scale 140 cm diameter SPC called S140.This thesis will explore two studies related to the understanding of S140’s volume and gas characteristics. First, the characterization of the detector’s fiducial volume (referred to as ‘fiducialization’), defined as the volume where the detector is sensitive to signal formation, will be explored using Monte Carlo electron drift simulations. This simulation framework will be used in this thesis for the determination of limits on the effective mass acceptance of S140 during the LSM measurement campaign through the calculation of the detector’s fiducialization efficiency. A second study will also be presented looking at the feasibility of novel measurement techniques with prototype Laser Absorption Spectroscopy (LAS) apparatuses in the live measurement of the concentration of CH4 within S140.
Perfecting our set of spectrophotometric standard DA white dwarfs
Creators: name: Calamida, A.
name: Matheson, T.
name: Olszewski, E. W.
name: Saha, A.
name: Axelrod, Tim
name: Shanahan, C.
name: Holberg, J.
name: Points, S.
name: Narayan, G.
name: Malanchev, K.
name: Ridden-Harper, R.
name: Gentile-Fusillo, N.
name: Raddi, R.
name: Bohlin, R.
name: Rest, A.
name: Hubeny, I.
name: Deustua, S.
name: Mackenty, . J.
name: Sabbi, E.
name: Stubbs, C. W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We verified for photometric stability a set of DA white dwarfs with Hubble Space Telescope magnitudes from the near-ultraviolet to the near-infrared and ground-based spectroscopy by using time-spaced observations from the Las Cumbres Observatory network of telescopes. The initial list of 38 stars was whittled to 32 final ones which comprise a high quality set of spectrophotometric standards. These stars are homogeneously distributed around the sky and are all fainter than r ~ 16.5 mag. Their distribution is such that at least two of them would be available to be observed from any observatory on the ground at any time at airmass less than two. Light curves and different variability indices from the Las Cumbres Observatory data were used to determine the stability of the candidate standards. When available, Pan-STARRS1, Zwicky Transient Facility and TESS data were also used to confirm the star classification. Our analysis showed that four DA white dwarfs may exhibit evidence of photometric variability, while a fifth is cooler than our established lower temperature limit, and a sixth star might be a binary. In some instances, due to the presence of faint nearby red sources, care should be used when observing a few of the spectrophotometric standards with ground-based telescopes. Light curves and finding charts for all the stars are provided.
description: 48 pages, 50 figures, accepted for publication on ApJ
Measuring black carbon mixing states using a tandem centrifugal particle mass analyzer and single particle soot photometer system
Creators: Naseri, Arash
Publisher: name: University of Alberta Library
Year: 2023

This work aimed to improve the evaluation of atmospheric black carbon (BC) mixing states by using a tandem Centrifugal Particle Mass Analyzer (CPMA), and Single Particle Soot Photometer (SP2) system. To derive a BC mixing state using the CPMA SP2 system, the measurements should be deconvolved with a proper inversion scheme that accounts for multiple charging of particles and physical constraints. Four objectives were followed to improve the accuracy of the method: (i) developing a novel deconvolution scheme; (ii) determining optimum measurement configurations for the CPMA SP2 system response collection; (iii) experimentally characterizing the CPMA transfer function; and (iv) incorporating CPMA-SP2 system into real-world applications to demonstrate its performance.

The first objective was achieved by developing a novel inversion scheme for determining the two-dimensional number distribution of non-refractory materials on black carbon, taking into account both physical constraints and a lack of knowledge about black carbon particle mobility. The novel approach was tested with several well-established regularization methods to determine which method outperforms the other. The results revealed that the exponential distance method outperformed other regularization methods tested. Also, to derive the optimum sampling settings of the CPMA SP2 responses, Monte Carlo sampling was utilized to examine the sensitivity of reconstruction error to experimental inputs. Based on the aerosol concentration and measuring time, general recommendations for typical aged atmospheric aerosols are: (i) large numbers of SP2 bins per decade (ns' = 64, (ii) a preference for higher SP2 sampling counts per CPMA setpoint (Ns>10000), (iii) a moderate number of CPMA setpoints per decade (nc' = 3 to 8), (iv) CPMA resolution around 1.0, and (v) a high CPMA flow rate (1.5 L/min).

For improving the evaluation of the mathematical model of the CPMA-SP2 system, which directly impacts the reconstruction accuracy of particle mass-BC mass distribution, the transfer function of CPMA was experimentally evaluated and approximated with a triangular transfer function. Deviation of the idealized transfer function from the actual case was measured, and it was found that the actual CPMA transfer function is generally a little bit narrower than expected, while the losses are much higher than expected.

Finally, the improved CPMA-SP2 system was demonstrated for the measurement of wildfire BC mixing states and compared to other measurement techniques established in the literature. The comprehensive comparison between methods indicates that while the CPMA-SP2 measurement may suffer from poor temporal resolution, it enjoys higher counting statistics to retrieve information, thus the reconstructed results are less uncertain, and also information is retrieved on a larger validated detection size range.
CFHTLenS: Co-evolution of galaxies and their dark matter haloes
Creators: name: Hudson, Michael J.
name: Gillis, Bryan R.
name: Coupon, Jean
name: Hildebrandt, Hendrik
name: Erben, Thomas
name: Heymans, Catherine
name: Hoekstra, Henk
name: Kitching, Thomas D.
name: Mellier, Yannick
name: Miller, Lance
name: Van Waerbeke, Ludovic
name: Bonnett, Christopher
name: Fu, Liping
name: Kuijken, Konrad
name: Rowe, Barnaby
name: Schrabback, Tim
name: Semboloni, Elisabetta
name: van Uitert, Edo
name: Velander, Malin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Galaxy-galaxy weak lensing is a direct probe of the mean matter distribution around galaxies. The depth and sky coverage of the CFHT Legacy Survey yield statistically significant galaxy halo mass measurements over a much wider range of stellar masses ($10^{8.75}$ to $10^{11.3} M_{\odot}$) and redshifts ($0.2 < z < 0.8$) than previous weak lensing studies. At redshift $z \sim 0.5$, the stellar-to-halo mass ratio (SHMR) reaches a maximum of $4.0\pm0.2$ percent as a function of halo mass at $\sim 10^{12.25} M_{\odot}$. We find, for the first time from weak lensing alone, evidence for significant evolution in the SHMR: the peak ratio falls as a function of cosmic time from $4.5 \pm 0.3$ percent at $z \sim 0.7$ to $3.4 \pm 0.2$ percent at $z \sim 0.3$, and shifts to lower stellar mass haloes. These evolutionary trends are dominated by red galaxies, and are consistent with a model in which the stellar mass above which star formation is quenched "downsizes" with cosmic time. In contrast, the SHMR of blue, star-forming galaxies is well-fit by a power law that does not evolve with time. This suggests that blue galaxies form stars at a rate that is balanced with their dark matter accretion in such a way that they evolve along the SHMR locus. The redshift dependence of the SHMR can be used to constrain the evolution of the galaxy population over cosmic time.
description: 18 pages, MNRAS, in press
Effect of Consuming Dairy Fats on Obesity-Related Cardiometabolic Perturbations and Immune Function in Low Birthweight Swine
Creators: She, Yongbo
Publisher: name: University of Alberta Library
Year: 2023

Although dairy intake has been shown to have a neutral or some beneficial effect on major cardiometabolic risk factors, the impact of dairy, and especially dairy fat, on immune function remains to be investigated. To understand the effect of consuming dairy fat on cardiometabolic risk factors and immune function, we used an established low birthweight (LBW) swine model of diet-induced insulin resistance to compare high-fat and low-fat dairy products to a control high-fat diet (CHF). LBW piglets were randomized to consume one of the 3 experimental diets: 1) CHF, 2) CHF diet supplemented with 3 servings/day of high-fat dairy (HFDairy) and 3) CHF diet supplemented with 3 servings/day of low-fat dairy (LFDairy). As comparison groups, normal birthweight (NBW) piglets were fed a CHF (NBW-CHF) or standard pig grower diet (NBW-Chow). At 11 weeks of age, all piglets underwent an established modified oral glucose and fat tolerance test (MOGTT). At 12 weeks of age, piglets were euthanized. Fasting blood and tissue samples were collected. Ex vivo cytokine production by peripheral blood mononuclear cells (PBMCs) and isolated intestinal mesenteric lymph node (MLN) cells stimulated with mitogens were assessed. As expected, LBW-CHF piglets showed early signs of insulin resistance. Feeding high-fat dairy products improved (lowered) fasting plasma glucose concentrations more than low-fat dairy compared to LBW-CHF. Irrespective of fat content, dairy consumption had neutral effect on major cardiometabolic risk factors in both fasting and postprandial state. Following ex vivo mitogenic stimulation on PBMCs and MLN cells, we have for the first time confirmed that LBW-CHF piglets exhibited both impaired peripheral and intestinal immune function particularly T cell function. While feeding high-fat dairy had relative minor effect, feeding low-fat dairy significantly improved the production of IL-2, TNF-α and/or IFN-γ from PBMCs and MLN cells respectively, suggesting improved peripheral and intestinal immune function. Overall, the research presented in this thesis has provided new mechanistic insight to support the role of dairy products, specifically milk, yogurt, and cheese, in counteracting some of the obesity-related cardiometabolic and immune perturbations.
A Development of 3D navigation system for micro-nano robot based on a Magnetic Particle Imaging system
Creators: name: Bui, Minh Phu
name: Park, Myeongjin
name: Le, Tuan-Anh
name: Yoon, Jungwon
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: The 3D navigation system of micro-nano robot based on magnetic particle imaging is a promising technique to be used for targeted drug delivery. Using the magnetic actuator by manipulating field free point (FFP) and non-invasive molecular imaging method such magnetic particle imaging, the device can reduce the harm in treatment. In this paper, we used closed-loop control to steer a micro robot to a desired position by a 3D FFP magnetic force based system. A custom-built MPI system with a bore size of 90 mm that can generate a gradient as high as 4T/m/µ0 was used to verify the control system in three dimensions.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Second Strain Gradient Continuum Model for the Mechanics of Fiber-Reinforced Composites
Creators: Rahman, Md Hafijur
Publisher: name: University of Alberta Library
Year: 2023

The mechanics of composite materials is a subject of intense study due to their versatile and tailorable mechanical properties. A composite material consists of at least two different phases; one is called the reinforcing phase and the other one in which it is embedded is called the matrix phase. Due to the presence of multi-phase and fiber-matrix interface, the characterization of local behaviors of a composite is computationally expensive. The continuum mechanics offers the necessary mathematical framework to accommodate the overall microscopic behaviors of the reinforcement phase into the model of deformations. In this thesis, the mechanics of fiber-reinforced composite materials are presented within the framework of the second strain gradient theory. A continuum-based model is developed for the analysis of elastic materials reinforced with unidirectional and bidirectional fibers and subjected to finite plane deformations. Moreover, the continuously distributed unidirectional fiber-composite system is transformed into the randomly distributed short fiber-composite system by introducing the shear lag parameter and krenchel orientation factor into the model. The mechanics of randomly distributed short fiber-composite system is also presented. The Euler equilibrium equations and the associated boundary conditions are obtained via the variational principle and iterative integration by parts. In particular, the energy density function is augmented to accommodate the first, second, and third gradient of deformations into the models of continuum deformation. The complete expressions of Piola-type triple stress and its coupled triple force arising in the third gradient of continuum deformations are formulated, which, in turn, yield the unique deformation maps in the presence of admissible boundary conditions of higher order. The solutions of the resulting systems of differential equations are obtained via the custom-built numerical scheme from which smooth and dilatational shear angle distributions are predicted throughout the entire domain of interest.  It is also observed that the third gradient constitutive parameter is associated with the volume dilatation of third-gradient continua, which may be appeared in the form of shear band inclination angle. In addition, the fiber aspect ratio and the third gradient constitutive parameter are observed to be related to the effective Young's modulus of a randomly distributed short-fiber composite system. The obtained numerical results are compared with the results in the dedicated literature, which show a good agreement.
title: Konjunkturförderungsprogramm hilft der Denkmalpflege (3)
Creators: name: Freiburg, Regierungsbezirk
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 6, Nr. 1 (1977), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4