cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exceptional and regular spectra of a generalized Rabi model
Creators: name: Tomka, Michael
name: Araby, Omar El
name: Pletyukhov, Mikhail
name: Gritsev, Vladimir
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the spectrum of the generalized Rabi model in which co- and counter-rotating terms have different coupling strengths. It is also equivalent to the model of a two-dimensional electron gas in a magnetic field with Rashba and Dresselhaus spin-orbit couplings. Like in case of the Rabi model, the spectrum of the generalized Rabi model consists of the regular and the exceptional parts. The latter is represented by the energy levels which cross at certain parameters' values which we determine explicitly. The wave functions of these exceptional states are given by finite order polynomials in the Bargmann representation. The roots of these polynomials satisfy a Bethe ansatz equation of the Gaudin type. At the exceptional points the model is therefore quasi-exactly solvable. An analytical approximation is derived for the regular part of the spectrum in the weak- and strong-coupling limits. In particular, in the strong-coupling limit the spectrum consists of two quasi-degenerate equidistant ladders.
description: 15 pages, 9 figures
Current Dark Matter Annihilation Constraints from CMB and Low-Redshift Data
Creators: name: Madhavacheril, Mathew S.
name: Sehgal, Neelima
name: Slatyer, Tracy R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Updated constraints on dark matter cross section and mass are presented combining CMB power spectrum measurements from Planck, WMAP9, ACT, and SPT as well as several low-redshift datasets (BAO, HST, supernovae). For the CMB datasets, we combine WMAP9 temperature and polarization data for l <= 431 with Planck temperature data for 432 < l < 2500, ACT and SPT data for l > 2500, and Planck CMB four-point lensing measurements. We allow for redshift-dependent energy deposition from dark matter annihilation by using a `universal' energy absorption curve. We also include an updated treatment of the excitation, heating, and ionization energy fractions, and provide updated deposition efficiency factors (f_eff) for 41 different dark matter models. Assuming perfect energy deposition (f_eff = 1) and a thermal cross section, dark matter masses below 26 GeV are excluded at the 2-sigma level. Assuming a more generic efficiency of f_eff = 0.2, thermal dark matter masses below 5 GeV are disfavored at the 2-sigma level. These limits are a factor of ~2 improvement over those from WMAP9 data alone. These current constraints probe, but do not exclude, dark matter as an explanation for reported anomalous indirect detection observations from AMS-02/PAMELA and the Fermi Gamma-ray Inner Galaxy data. They also probe relevant models that would explain anomalous direct detection events from CDMS, CRESST, CoGeNT, and DAMA, as originating from a generic thermal WIMP. Projected constraints from the full Planck release should improve the current limits by another factor of ~2, but will not definitely probe these signals. The proposed CMB Stage IV experiment will more decisively explore the relevant regions and improve upon the Planck constraints by another factor of ~2.
description: 11 pages, 6 figures, Appeared in PRD
title: Veröffentlichungen des Landesdenkmalamtes
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 4, Nr. 4 (1975), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Evaluating Consumer Behaviour, Attitudes, and Emotions Surrounding Environmental Aspects of the Canadian Animal and Plant-based Dairy Industries
Creators: Rogers, Katherine Louisa
Publisher: name: University of Alberta Library
Year: 2023

Across Canada, there are approximately 3 million people that identify as vegan or vegetarian. Though reasons for this diet vary across individuals and groups, a major motivator found in recent research is that consumers are concerned about their environmental footprints and are seeking diets and lifestyles to reduce their impact on the planet. Specifically, the dairy industry is one that requires a variety of inputs including heat and electricity, feed and space for animals, and significant amounts of water; while creating a number of serious environmental impacts throughout the production process. Additionally, individuals are expressing their concern for animal welfare and seek to reduce their personal impact on animals.

In this research project, I analyze the ways that the Canadian public demonstrate their understandings of pro-environmental and pro-animal welfare behaviors, and the ways that emotions impact their decision-making processes. Utilizing data from a general population survey, my research analyzes the ties between the sociology of emotions and the theory of planned behaviour in the context of Canadian animal and plant-based dairy consumption. Exploring these concepts allows for a better understanding of the context behind current and future consumption trends, supporting players in the dairy and dairy-alternative industries in creating products that meet the environmental and welfare expectations of consumers.
Optimization of the coprecipitation in the synthesis of SPIONs with rigorize control of process conditions
Creators: name: Mirdavardoost, Fatemeh
name: Lüdtke-Buzug, Kerstin
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: In this work, superparamagnetic iron oxide nanoparticles were synthesized using an alkaline coprecipitation. Two different bases (NaOH and NH3) were used. Furthermore, the influence of temperature on the properties of the products was investigated. Three different Dextran derivates were used as shell material for the syntheses. The products of the different syntheses were investigated by Magnetic Particle Spectroscopy (MPS) and Photon Correlation Spectroscopy (PCS). The magnetic properties and the hydrodynamic diameter were used as quality criteria of the produced SPIONs. The results of this studies were evaluated and carefully compared.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Holographic correlation functions at finite density and/or finite temperature
Creators: name: Georgiou, George
name: Zoakos, Dimitrios
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate holographically one and two-point functions of scalar operators at finite density and/or finite temperature. In the case of finite density and zero temperature we argue that only scalar operators can have non-zero VEVs. In the case in which both the chemical potential and the temperature are finite, we present a systematic expansion of the two-point correlators in powers of the temperature T and the chemical potential $Ω$. The holographic result is in agreement with the general form of the OPE which dictates that the two-point function may be written as a linear combination of the Gegenbauer polynomials $C_J^{(1)}(ξ)$ but with the coefficients depending now on both the temperature and the chemical potential, as well as on the CFT data. The leading terms in this expansion originate from the expectation values of the scalar operator $ϕ^2$, the R-current ${\cal J}^μ_{ϕ_3}$ and the energy-momentum tensor $T^{μν}$. By employing the Ward identity for the R-current and by comparing the appropriate term of the holographic result for the two-point correlator to the corresponding term in the OPE, we derive the value of the R-charge density of the background. Compelling agreement with the analysis of the thermodynamics of the black hole is found. Finally, we determine the behaviour of the two-point correlators, in the case of finite temperature, and in the limit of large temporal or spatial distance of the operators.
description: 1+31 pages
A Framework for Process–Waste Mitigation in Off-site Construction during the Design Phase
Creators: Gholinezhad Dazmiri, Danial
Publisher: name: University of Alberta Library
Year: 2023

Despite accounting for a tiny percentage of total construction expenses, a wasteful design process is more likely to cause delays or errors, resulting in low productivity, budget overrun, undesirable outputs and wasting resources. This study aims to examine the design process through Lean principles to identify non-value-added activities or resources, evaluate different methods and propose solutions to eliminate or mitigate them. Value stream mapping is used in addition to statistical analysis to map the process to identify the challenges and waste areas. A framework is developed to help evaluate processes and increase efficiency during the design phases in offsite construction and built-to-order companies, thereby reducing the cost and duration of the project. Moreover, simulation is used to assess the recommended interventions. The simulation shows the estimated improvements resulting from implementing the suggested interventions, as an expected improvement of 47.3% reduction in design lead time with a utilization ratio of 13.7%. The framework is generic and applicable to all construction industry aspects. The innovation of this framework resides in the precise procedures and direction offered to improve these phases utilizing Lean tools.
A Review of the Appropriate Usage and Efficacy of Iron Replacement Therapy in Gastroenterology Inpatients: Is Intravenous Iron Overutilized?
Creators: Li, Suqing
Publisher: name: University of Alberta Library
Year: 2023

Background:

Iron deficiency anemia (IDA) is highly prevalent in patients with gastrointestinal disease. Therefore, appropriate replacement therapy is an essential component of management. Both intravenous (IV) and oral (PO) iron replacement therapies (IRT) are effective. There are concerns, however, that IV therapy is being overutilized. Given higher medication costs, significant time burdens on patients and nursing staff, and reported similar efficacy to PO therapy in select patients, the use of IV therapy should be judicious. Our study reviewed the use of iron replacement therapy amongst gastroenterology inpatients at a tertiary care center. The objectives of our study were to assess the appropriateness of IV iron use, compare patients’ clinical responses to IV and PO therapy, and evaluate predictors of response.

Methods:

This study was a retrospective observational chart review. All consecutive patients admitted to the adult gastroenterology inpatient wards between January 1, 2016, to January 1, 2017, who received iron replacement therapy were included. Demographic information was retrieved for all patients. We reviewed patients' iron therapy details, hemoglobin response and clinical outcomes up to 6 months post-discharge.

Results:

A total of 202 patients who received IV, oral, or combined IV and oral iron replacement during their admission were included. 56% (n=96/172) of patients in whom IV replacement was prescribed during their admission met the criteria for appropriate use. Overall clinical response was not significantly different between patients receiving IV or PO iron therapy. There were no significant differences between groups in readmission rates within 90 days (p=0.41), emergency department visits within 90 days (p=0.24) and need for blood transfusion within 6 months (p=0.11).

Conclusion:

IV IRT is effective but is overused without appropriate indication. PO and IV IRT had similar efficacy. Appropriate usage of IV iron replacement can be optimized through proper rationalization and quality improvement measures.
title: Die Dienststellen des Landesdenkmalamtes
Creators: name: Redaktion, Die
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
title: Veröffentlichungen des Landesdenkmalamtes
Creators: name: Redaktion, Die
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
Evolution of positive streamers in air over non-planar dielectrics: Experiments and simulations
Creators: name: Meyer, Hans Kristian
name: Marskar, Robert
name: Mauseth, Frank
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study positive streamers in air propagating along polycarbonate dielectric plates with and without small-scale surface profiles. The streamer development was documented using light-sensitive high-speed cameras and a photo-multiplier tube, and the experimental results were compared with 2D fluid streamer simulations. Two profiles were tested, one with 0.5 mm deep semi-circular corrugations and one with 0.5 mm deep rectangular corrugations. A non-profiled surface was used as a reference. Both experiments and simulations show that the surface profiles lead to significantly slower surface streamers, and also reduce their length. The rectangular-cut profile obstructs the surface streamer more than the semi-circular profile. We find quantitative agreement between simulations and experiments. For the surface with rectangular grooves, the simulations also reveal a complex propagation mechanism where new positive streamers re-ignite inside the surface profile corrugations. The results are of importance for technological applications involving streamers and solid dielectrics.
description: 15 pages, 12 figures
Purity for graded potentials and quantum cluster positivity
Creators: name: Davison, Ben
name: Maulik, Davesh
name: Schuermann, Joerg
name: Szendroi, Balazs
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Consider a smooth quasiprojective variety X equipped with a C*-action, and a regular function f: X -> C which is C*-equivariant with respect to a positive weight action on the base. We prove the purity of the mixed Hodge structure and the hard Lefschetz theorem on the cohomology of the vanishing cycle complex of f on proper components of the critical locus of f, generalizing a result of Steenbrink for isolated quasi-homogeneous singularities. Building on work of Kontsevich-Soibelman, Nagao and Efimov, we use this result to prove the quantum positivity conjecture for cluster mutations for all quivers admitting a positively graded nondegenerate potential. We deduce quantum positivity for all quivers of rank at most 4; quivers with nondegenerate potential admitting a cut; and quivers with potential associated to triangulations of surfaces with marked points and nonempty boundary.
description: 34pp, many small improvements, to appear in Compositio Math
title: „Römerstadt Osterburken". Chancen und Zwänge der Bodendenkmalpflege
Creators: name: Reutti, Fridolin
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 7, Nr. 1 (1978), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Extending a commercial preclinical MPI scanner into an MPI-MFH platform using a hyperthermia insert
Creators: name: Wei, Huimin
name: Franke, Jochen
name: Buchholz, Oliver
name: Behrends, Andre
name: Bär, Sebastien
name: Hofmann, Ulrich G.
name: Buzug, Thorsten M.
name: Graeser, Matthias
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: Magnetic particle imaging (MPI) and magnetic fluid hyperthermia (MFH) have the potential of being integrated in a single device to allow for seamless switching between imaging and therapeutic modes. In an MPI-MFH platform, the field free region of an MPI scanner can serve not only for imaging diagnostics but, by adding a radio-frequency magnetic field, also for therapeutic use of the magnetic particles by heating. It enables precisely localized heating to a specific target temperature deep in the tissue via MFH. In addition, MPI provides targeted visualization and temperature information of systemically injected magnetic nanoparticles providing direct feedback. In this work, the integration process of a hyperthermia insert which is capable of extending a commercial magnetic particle imaging scanner with the functionality of magnetic fluid hyperthermia is presented. Furthermore, the thermal resolution of the MPI-MFH platformis measured.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Photoelectron momentum distributions in the strong-field ionization of atomic hydrogen by few-cycle elliptically polarized optical pulses
Creators: name: Douguet, Nicolas
name: Bartschat, Klaus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the strong-field ionization of atomic hydrogen in a few-cycle elliptically polarized infrared pulse by solving the time-dependent Schrödinger equation. The dependence of the photoelectron momentum distribution on the pulse intensity, ellipticity, length, envelope, and carrier envelope phase is analyzed. In particular, we explain the variation of the electron offset angle with asymptotic electron energy through the combined action of the field and the Coulomb potential, and demonstrate that low-ellipticity pulses make it possible to access the electron release time.
description: 12 pages, 7 figures
Farmland: Will There Be Enough?
Creators: name: Cotner, M. L.
name: Skold, M. D.
name: Krause, O.
name: Cotner, M. L.
name: Skold, M. D.
name: Krause, O.
Publisher: name: Unknown
Year: 1975
Subjects: Agricultural and Food Policy
Crop Production/Industries
Land Economics/Use
Livestock Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the report: The world, within the past two years, has entered a new era of food scarcity. While this is hardly new or news to much of the less developed world, it strikes hard at Americans who are accustomed to plenty, even surpluses. Since the 1930's, U.S. agricultural capacity has exceeded demands for agricultural products. Excess capacity was fueled by a combination of rich natural resources and rapid technological advance. We even legislated farm programs to restrict production as surpluses of various commodities drove farm prices and incomes down. Government programs in the 1960's diverted from 39 to 65 million acres from crop use. Since 1972, however, expanding foreign markets and adverse world climatic conditions accelerated food demand. Nearly all of the U.S. diverted acreage was subsequently released for crop use in time for 1974 plantings. In this new period of world food scarcity, Americans are forced to reconsider the potential of their agriculture industry. Fortunately, the U.S. land resource base appears ample for future domestic needs, at least beyond the year 2000. It also seems likely that U.S. farmers will have adequate land and technology to make sizeable commitments to the export market. But, it may not come easily, how well we do will depend on our chances for higher productivity per acre and our chances for more crop acres. Our record since 1950 sets the stage for the decisions we face in the future.
description: The authors are members of the Natural Resource Economics Division, Economic Research Service, U.S. Department of Agriculture. This report is based on their presentation to a meeting of the American Association for the Advancement of Science, New York, N.Y., January 26-31, 1975.
Calculus, continuity and global wave-front properties for Fourier integral operators on $\mathbf{R}^d$
Creators: name: Coriasco, S.
name: Johansson, K.
name: Toft, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We illustrate the composition properties for an extended family of SG Fourier integral operators. We prove continuity results for operators in this class with respect to $L^2$ and weighted modulation spaces, and discuss continuity on $\mathscr{S}$, $\mathscr{S}^\prime$ and on weighted Sobolev spaces. We study mapping properties of global wave-front sets under the action of these Fourier integral operators. We extend classical results to more general situations. For example, there are no requirements of homogeneity for the phase functions. Finally, we apply our results to the study of of the propagation of singularities, in the context of modulation spaces, for the solutions to the Cauchy problems for the corresponding linear hyperbolic operators.
description: 42 pages. General reorganization, mistakes and typos corrections
The Mellin transform technique for the extraction of the gluon density
Creators: name: Graudenz, D.
name: Hampel, M.
name: Vogt, A.
name: Berger, Christoph
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 1996
Subjects: subject: 530
subject: electron p: deep inelastic scattering
subject: deep inelastic scattering: electron p
subject: jet: electroproduction
subject: electroproduction: jet
subject: model: parton
subject: gluon: density
subject: Mellin transformation
subject: quantum chromodynamics: higher-order
subject: numerical calculations
subject: tables

description: A new method is presented to determine the gluon density in the proton from jet production in deeply inelastic scattering. By using the technique of Mellin transforms not only for the solution of the scale evolution equation of the parton densities but also for the evaluation of scattering cross sections, the gluon density can be extracted in next-to-leading order QCD. The method described in this paper is, however, more general, and can be used in situations where a repeated fast numerical evaluation of scattering cross sections for varying parton distribution functions is required.
Single sided NMR to characterize the interaction of yield stress liquids with porous media
Creators: name: Wörtge, Dennis
name: Graziano, Raffaele
name: Mohebbi, Behzad
name: Claussen, Jan
name: Guido, Stefano
name: Blümich, Bernhard
name: Stapf, Siegfried
Publisher: name: The Biot-Bazant Conference
Year: 2022
Subjects: Geomechanics and resources geotechnical engineering
Fluid mechanics and thermal engineering not elsewhere classified

description: This publication is part of the proceedings of the Biot-Bažant Conference on Engineering Mechanics and Physics of Porous Materials, which took place virtually on June 1-3, 2021. It contains a one-page abstract and the video of the talk that was given at the conference.
title: Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 7, Nr. 2 (1978), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
LSST Survey Strategies and Brown Dwarf Parallaxes
Creators: name: Gizis, John E.
name: Yoachim, Peter
name: Jones, R. Lynne
name: Hilligoss, Dylan
name: Ji, Jinbiao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) has the potential to measure parallaxes for thousands of nearby ultracool dwarfs, enabling improved measurements of the brown dwarf luminosity function. We develop a simple model to estimate the number of L dwarfs and T dwarfs with parallaxes with signal-to-noise ratio greater than ten in the baseline LSST survey. High quality astrometry imposes scheduling constraints. We assess different possible observing strategies using quantitative metrics and make recommendations as part of the LSST community input process. We find that the new substellar parallax sample will represent a nearly order-of-magnitude increase on existing samples, with ~50-100 objects per spectral type bin for late-L to mid-T dwarfs. The sample size is robust (+/- 5%) against most survey strategy changes under consideration, although we do identify areas of tension with other uses of twilight time that could have larger impact.
description: Accepted to the Astrophysical Journal Supplement, for special issue on Rubin LSST Science Optimization. https://iopscience.iop.org/journal/0067-0049/page/rubin_cadence
An Intelligent framework for Quality Inspection and Control in Aquaponics, based on Computer-vision, Artificial Intelligence, and Knowledge modeling
Creators: Abbasi, Rabiya
Publisher: name: University of Alberta Library
Year: 2023

The burgeoning global population and subsequent food security issues have attracted much attention toward sustainable food production systems. As one of the emerging vertical farming methods, aquaponics promises to be a sustainable alternative to food and environmental problems. Aquaponics in integrated production of fish and hydroponic crops with recirculation of the aquaculture effluent used by the plant as fertilizer. This technique offers high water efficiency, a faster growth rate, and high crop yields. Despite all the advantages offered by this technology, its implementation on a commercial scale is hindered by many technical and economic factors, which can be addressed by integrating smart technologies, automation, and control. This thesis, therefore, aims to support research towards developing solutions for crop quality control and viable commercial aquaponic. For this purpose, the status of digitization in the agriculture industry is first investigated, and potential research gaps in aquaponics are identified. Next, an ontology model is formalized to store relevant knowledge pertaining to different domains of the aquaponic 4.0 system, which can be extracted and used to enable data-driven decisions related to crop quality, facility layout, and system operations. An interactive decision support tool is then developed that uses knowledge from the ontology model to automatically determine the design of grow channels in hydroponic units based on crop characteristics for enhanced crop growth and quality. After that, a cloud-based dashboard is developed for the acquisition of sensors’ data and crop images from the aquaponic facility, which is also linked with the ontology model and other quality assessment tools developed in this research. A crop disease detection system is then developed to detect and identify diseases in leafy green crops, followed by the development of the model that effectively assesses the quality of lettuce crops based on foliage color. Another model

iii

is then developed to estimate the crop morphological traits in a particular area and plant site spacing for healthy growth of the crop. Finally, a cloud-based application that acts as a decision support system is designed where all the models are deployed. Implementing this decision support system will assist agriculturalists in various decisions related to growing crops in aquaponics and crop quality control and management, thereby paving the way towards developing a smarter and sustainable food production system.
title: Archäologische Untersuchungen in Stettfeld (Gemeinde Ubstadt-Weiher, Lkr. Karlsruhe)
Creators: name: Behrends, Rolf-Heiner
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 7, Nr. 2 (1978), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Least-Order Torsion-Gravity for Chiral-Spinor Fields, induced Self-Interacting Potentials and Parity Conservation
Creators: name: Fabbri, Luca
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We will consider the most general least-order derivative action for the torsional completion of gravitational backgrounds filled with left-handed and right-handed semi-spinorial fields, accounting for all parity-even as well as parity-odd contributions; we will proceed by performing the customary analysis, decomposing torsion and substituting it in terms of the semi-spinorial density currents, in order to obtain the effective action with the torsionally-induced self-interacting potentials among the chiral fermionic fields: we shall see that the resulting effective non-linear potentials will turn eventually out to be parity conserving after all.
description: 7 pages
Cross-Cultural Integration through the Lens of Loneliness: a Study of Chinese Direct Entry Students in the United Kingdom
Creators: name: O'Dea, Xianghan (Christine)
name: Stern, Julian
Publisher: name: figshare
Year: 2023
Subjects: Higher education
Inclusive education
Multicultural education (excl. Aboriginal and Torres Strait Islander, Māori and Pacific Peoples)
Comparative and cross-cultural education
Teacher and student wellbeing

description: This study explores cross-cultural integration of Chinese top-up students in a UK university from the perspective of loneliness. Existing research on integration has underplayed loneliness. This study used semi-structured interviews to collect data at three key transition points during the top-up year. The findings suggest that students experienced loneliness both within and beyond their group, notwithstanding a number of reasons why they might be expected to be less lonely than other international students. Loneliness seemed to have a significant impact on cross-cultural integration, and participants were also unable to form strong bonds within their cohort of Chinese top-up students, and unable to experience healthy solitude. There are implications for the pre-departure preparation of such students, for the institutions hosting such students, and for responses to the social and emotional challenges they experience.
Additional file 2 of Integrated bioinformatic analysis of protein landscape in gingival crevicular fluid unveils sequential bioprocess in orthodontic tooth movement
Creators: name: Chen, Yao
name: Mei, Li
name: Qian, Yuran
name: Zhou, Xinlianyi
name: Zhao, Zhihe
name: Zheng, Wei
name: Li, Yu
Publisher: name: figshare
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Computational Biology

description: Supplementary Material 2: Supplementary Table 1. Mediators from all the human GCF studies which were clearly marked force magnitudes and tooth movement patterns in the last decade.
Adaption of direct Chebyshev reconstruction to an anisotropic particle model
Creators: name: Droigk, Christine
name: Maass, Marco
name: Eulers, Mathias
name: Mertins, Alfred
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: Model-based image reconstruction in magnetic particle imaging (MPI) is an alternative to common reconstruction methods relying on a measured system matrix. It avoids the time-consuming measurement process but has the problem of inferior image quality due to the complex imaging chain that has to be modeled. Recently, a direct reconstruction method using weighted Chebyshev polynomials for multi-dimensional MPI has been proposed that operates in the frequency domain and even does not need a simulated system matrix. However, as the underlying model neglects several physical processes, including the anisotropy of nanoparticles, artifacts in the reconstructed particle distribution can occur. In this work, an adaption of the direct reconstruction method to an anisotropic particle model is proposed. It is shown that the adaption reduces deformations of the reconstructed particle distribution and thus provides one further step towards fast and high quality model-based image reconstruction.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Colliding winds in massive binary systems to be diagnosed with X-IFU
Creators: name: Rauw, Gregor
name: Nazé, Yaël
name: Mossoux, Enmanuelle
Publisher: name: Zenodo
Year: 2022
Subjects: X-rays: stars
Massive stars
Stellar winds

description: Abstract: OB and Wolf-Rayet stars feature energetic stellar winds. In massive binary systems, the winds of both components collide. This leads to the formation of a hot X-ray emitting plasma. The properties of this plasma are best studied via Athena/X-IFU observations of the line profiles of the Fe xxv line complex at 6.7 keV. We have designed numerical tools to predict the morphology of those lines for a variety of configurations and to extract a maximum of information from the future observations.
2D Projection Imaging with a Single-Sided FFL Magnetic Particle Imaging Scanner
Creators: name: McDonough, Chris
name: Tonyushkin, Alexey
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: There have been several MPI scanner designs with the promise of useful clinical imaging. One such promising design is the so called single-sided scanner, which limits all hardware to a single side of the device. This provides the scanner with an unrestricted imaging volume, but at the cost of finite imaging depth and inhomogeneous magnetic fields. Our group has designed such a scanner that utilizes an FFL for spatial encoding, which differs from the original single-sided scanner which utilizes an FFP. In this work we demonstrate the first two dimensional images obtained using a single-sided FFL MPI scanner.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Unsettled Norms and Unstable Positions: Miniature People in Children's Literature
Creators: Morris-O'Connor, Danielle A.
Publisher: name: University of Alberta Library
Year: 2023

From the earliest miniature narratives in English literature, there has been an insistence on miniature people’s inferiority to and dependence on big people and the big world, and the conclusion that big people will always be dangerous and destructive to miniature people because of this innate hierarchy built into their differences in scale. This narrative residue permeates miniature people children’s literature, affecting the representation and presentation of narrative voices, fictional worlds, the position of the child, relationships between characters, and perceptions of otherness The miniature world is constantly pressured from all sides by the oppressive perspective of the big world. However, the big world is also influenced by the miniature world. It is filled with miniature homes, miniature voices, miniature worlds, and miniature eyes. Miniature people see and perceive simultaneously from within both the big and miniatures worlds, creating points of unsettledness and instability in miniature narratives and subverting assumptive norms and hierarchies. These holes created in miniature narratives by miniature people’s interrelationship with big people reveal the constructed nature of the supposed innate hierarchy that still has strong residues in miniature narratives today.

I argue that with a focus on miniature people’s voice, unsettled positionality, and interrelation with the big world, the hierarchy of scale that first appears so ingrained and absolute is unveiled, and in some cases even unraveled. Using a timeline of miniature narratives that I constructed, I track the residues of big people’s dominance over miniature people, how it is manifested in miniature narratives, and how space can be created for miniature people to subvert the hierarchies imposed on them. As I progress through my timeline, the influence of these residues becomes more subtle but no less influential, and the miniature’s voice must become louder and more confrontational to continue to redirect the typical trajectory of the miniature narrative. Yet, even in texts that deplete the miniature people’s voice, these characters leave points of unsettledness and contradiction in their narratives that unearth the entrenched myth of the hierarchy of scale.
Consistency, breakdown robustness, and algorithms for robust improper maximum likelihood clustering
Creators: name: Coretto, Pietro
name: Hennig, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62H30, 62F35

description: The robust improper maximum likelihood estimator (RIMLE) is a new method for robust multivariate clustering finding approximately Gaussian clusters. It maximizes a pseudo-likelihood defined by adding a component with improper constant density for accommodating outliers to a Gaussian mixture. A special case of the RIMLE is MLE for multivariate finite Gaussian mixture models. In this paper we treat existence, consistency, and breakdown theory for the RIMLE comprehensively. RIMLE's existence is proved under non-smooth covariance matrix constraints. It is shown that these can be implemented via a computationally feasible Expectation-Conditional Maximization algorithm.
description: The title of this paper was originally: "A consistent and breakdown robust model-based clustering method"
Exclusive semileptonic $B$-meson decays using lattice QCD and unitarity
Creators: name: Martinelli, G.
name: Naviglio, M.
name: Simula, S.
name: Vittorio, L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present the results of the application of the Dispersion Matrix approach to exclusive semileptonic $B$-meson decays. This method allows to determine the hadronic form factors in a non-perturbative and completely model-independent way. Starting from lattice results available at large values of the momentum transfer, the behaviour of the form factors in their whole kinematical range is obtained without introducing any parameterization of their momentum dependence. We will focus on the determination of the Cabibbo-Kobayashi-Maskawa matrix elements $\vert V_{cb} \vert$ and $\vert V_{ub} \vert$ through the analysis of $B_{(s)} \to D_{(s)}^{(*)} \ell ν$ and $B_{(s)} \to π(K) \ell ν$ decays. New theoretical determinations of the Lepton Flavour Universality ratios relevant for these transitions will be also presented.
description: 8 pages, 5 figures, 2 tables; contribution to QCD@Work - International Workshop on QCD - Theory and Experiment, 27 - 30 June 2022, Lecce (Italy). arXiv admin note: substantial text overlap with arXiv:2205.13952
The 700 ks Chandra Spiderweb Field II: Evidence for inverse-Compton and thermal diffuse emission in the Spiderweb galaxy
Creators: name: Tozzi, P.
name: Gilli, R.
name: Liu, A.
name: Borgani, S.
name: Lepore, M.
name: Di Mascolo, L.
name: Saro, A.
name: Pentericci, L.
name: Carilli, C.
name: Miley, G.
name: Mroczkowski, T.
name: Pannella, M.
name: Rasia, E.
name: Rosati, P.
name: Anderson, C. S.
name: Calabro', A.
name: Churazov, E.
name: Dannerbauer, H.
name: Feruglio, C.
name: Fiore, F.
name: Gobat, R.
name: Jin, S.
name: Nonino, M.
name: Norman, C.
name: Rottgering, H. J. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the X-ray imaging and spectral analysis of the diffuse emission around the Spiderweb galaxy at z=2.16 and of its nuclear emission, based on a deep (700 ks) Chandra observation. We characterize the nuclear emission and computed the contamination in the surrounding regions due to the wings of the instrument PSF. Then, we quantified the extended emission within 12". We find that the Spiderweb galaxy hosts a mildly absorbed quasar, with modest yet significant variability on a timescale of ~1 year. We find that the emission in the jet regions is well described by a power law with Gamma~2-2.5, and it is consistent with IC upscattering of the CMB photons by the relativistic electrons. We also find a roughly symmetric, diffuse emission within a radius of ~100 kpc. This emission is consistent with thermal bremsstrahlung from a hot ICM with a temperature of kT=2.0_{-0.4}^{+0.7} keV, and a metallicity of Z<1.6Z_sun. The average electron density within 100 kpc is n_e=(1.51+-0.24+-0.14)E-2 cm^{-3}, corresponding to an upper limit for the total ICM mass of <=(1.76+-0.30+-0.17)E+12 M_sun (where error bars are 1 sigma statistical and systematic, respectively). If we apply hydrostatic equilibrium to the ICM, we measure a total gravitational mass M(<100 kpc)=(1.5^{+0.5}_{-0.3})E+13 M_sun and, extrapolating at larger radii, we estimate a total mass M_{500}=(3.2^{+1.1}_{-0.6})E+13 M_sun within a radius of r_{500}=(220+-30) kpc. We conclude that the Spiderweb protocluster shows significant diffuse emission within a radius of 12 arcsec, whose major contribution is provided by IC scattering associated with the radio jets. Outside the jet regions, we also identified thermal emission within a radius of ~100 kpc, revealing the presence of hot, diffuse baryons that may represent the embryonic virialized halo of the forming cluster.
description: 19 pages, 16 figures, accepted in Astronomy & Astrophysics
Paving the way for the future of Short Sea Shipping: The MOSES project
Creators: name: Kostovasili, Margarita
name: Kanellopoulos, Giannis
name: Prof. Nikolaos Ventikos
name: Louzis, Konstantinos
name: Oikonomidou, Haris
name: Pollalis, Christos
Publisher: name: Zenodo
Year: 2022

description: TRA, the Transport Research Arena, is the largest European research and technology conference on transport and mobility. This year, the conference took place from 14-17 November 2022, at the Lisbon Congress Center (CLL), situated in the historical area of Belém, just by the Tagus River. TRA is the foremost European transport event that covers all transport modes and all aspects of mobility. In 2022, TRA took place in Lisbon, Portugal. Themed “Moving together – reimagining mobility worldwide”, TRA2022 brought together experts from around the world to discuss the newest innovations and future of mobility and transport, building also on the Portuguese historical legacy and links to overseas transport professionals. Through the development of innovative solutions, TRA Lisbon 2022 aimed for a more efficient, safer, carbon-free, inclusive, and sustainable transport in all its modes. TRA offered a great venue for researchers, policymakers and industry representatives to get together and contribute to the discussion on how research and innovation can reshape the transport and mobility system. The conference provided a unique opportunity to hear about mobility trends in different parts of Europe, learn from achievements in industry as well as share best practices of policies and deployments”. On Wednesday 16th of November from 08.30 -10:00, Ms. Margarita Kostovasili from NTUA delivered a paper presentation at Subtheme 2.4.1.
Using Negative Bolus in Dynamic MPI
Creators: name: Mohn, Fabian
name: Exner, Miriam
name: Szwargulski, Patryk
name: Möddel, Martin
name: Knopp, Tobias
name: Graeser, Matthias
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: In Magnetic Particle Imaging, the spatial distribution of a tracer is measured and depicted with a concentration dependent signal intensity for any location that inhibits particles, whereas surrounding tissue does not provide any signal. After tracer injection, the signal over time (positive contrast) can be utilized as a transient response to calculate dynamic diagnostic parameters like perfusion parameter maps. In this work, a bolus of physiological saline solution without any particles (negative contrast) is proposed, where the remaining steady state concentration contributes to the image contrast. This opens up the possibility to stretch the total monitoring time of a patient by utilizing a positive-negative contrast sequence, while keeping the total iron dose constant in the subject. Resulting time responses show that normalized signals from positive and negative boli are concurrent in the phantom experiments, indicating identical diagnostic parameters for in-vivo use.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
title: Das alte und das neue Rathaus in Rosenfeld
Creators: name: Hannmann, Eckart
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 7, Nr. 3 (1978), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
An Oxygen Reduction Reaction Kinetic Model for Proton Exchange Membrane Fuel Cells Based on Free Energies of Activation and Adsorption
Creators: Ezquerra Silva, Elena
Publisher: name: University of Alberta Library
Year: 2023

Polymer electrolyte membrane fuel cells (PEMFCs) are a promising alternative technology

to internal combustion engines used on vehicles. However, improvements on durability and

performance are needed in order to boost the commercialization of this technology. The

oxygen reduction reaction (ORR) is the greatest source of voltage losses, and several studies

have identified that the catalyst degradation on the cathode is the main contributor to the

loss of electrochemical surface area (ECSA). Therefore, understanding degradation pathways

in the ORR kinetics and the activity of the catalyst layer (CL) are a priority for improving

the performance and durability of PEMFC.

Three well-known phenomena occur in the oxygen electrochemistry on platinum catalyst:

i) oxygen reduction reaction (ORR), ii) platinum oxide growth and iii) peroxide formation.

Many of the elementary steps are common to the three reaction pathways, even though, the

kinetics of these mechanisms are usually modelled separately. This MSc thesis first analyzes

and studies novel unified micro kinetic models on ORR available in the literature. Then, it

derives and implements a new ORR kinetic model that depends only on the activation and

adsorption energies. Kinetic parameters were estimated by fitting the model to Pt electrode

experimental data. Comparison between experimental data and proposed model as well as

other models show that the model is able to capture key steady state characteristics of the

ORR, and some transient trends.