cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fuchsian systems for Dotsenko-Fateev multipoint correlation functions and similar integrals of hypergeometric type
Creators: name: Golubeva, Valentina
name: Ivanov, Alexey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Complex Variables (math.CV)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The Dotsenko-Fateev integral is an analytic function of one complex variable expressing the amplitude in the 4-point correlator of the 2D conformal field theory. Dotsenko-Fateev found ODE of third order with Fuchsian singularities satisfied by their integral. In the present paper, this work is extended to generalized Dotsenko-Fateev integrals, in particular those associated to arbitrary multipoint correlators, and Pfaff systems of PDE of Fuchsian type are constructed for them. The ubiquity of the Fuchsian systems is in that they permit to obtain local expansions of solutions in the neighborhoods of singularities of the system.
A Systematic Survey of General Sparse Matrix-Matrix Multiplication
Creators: name: Gao, Jianhua
name: Ji, Weixing
name: Chang, Fangli
name: Han, Shiyu
name: Wei, Bingxin
name: Liu, Zeming
name: Wang, Yizhuo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: A.1; D.1.3; G.1.3
subject: 68-02, 68W10, 65F50

description: General Sparse Matrix-Matrix Multiplication (SpGEMM) has attracted much attention from researchers in graph analyzing, scientific computing, and deep learning. Many optimization techniques have been developed for different applications and computing architectures over the past decades. The objective of this paper is to provide a structured and comprehensive overview of the researches on SpGEMM. Existing researches have been grouped into different categories based on target architectures and design choices. Covered topics include typical applications, compression formats, general formulations, key problems and techniques, architecture-oriented optimizations, and programming models. The rationales of different algorithms are analyzed and summarized. This survey sufficiently reveals the latest progress of SpGEMM research to 2021. Moreover, a thorough performance comparison of existing implementations is presented. Based on our findings, we highlight future research directions, which encourage better design and implementations in later studies.
description: 37 pages, 20 figures, 11 tables, 1 algorithm
title: The elastic tensor of natural topaz: the effect of OH/F ratio
Creators: name: Precisvalle, Nicola
name: Speziale, Sergio
name: Martucci, Annalisa
name: Bonadiman, 1
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Topaz Al2SiO4(OHx,F1-x)2 is a crustal mineral, typical of magmatic and hydrothermal environments, but also present in metamorphic orogenic settings. It is characterized by high density and mechanical properties that make it a popular precious stone. Although apparently simple, the chemical composition of topaz shows a wide variability in the ratio OH/F, which has attracted researchers interested in connecting it to their geological settings, and for provenance analysis to identify the sources of commercial stones. We present a study of the full elastic tensor of a set of four, well characterized, natural Topaz crystals from different geological settings and with different OH/F ratios. The substitution of F with OH produces a general softening of the elastic coefficients of topaz. We present and interpret the compositional dependence of the individual tensor coefficients and the aggregate moduli in connection with the consequences of OH/F substitution in the crystal structure of topaz.
Testing a dynamical origin of Standard Model fermion masses
Creators: name: Alanne, Tommi
name: Franzosi, Diogo Buarque
name: Frandsen, Mads T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a test of the Standard Model fermion mass origin in models of dynamical electroweak symmetry breaking. The couplings of composite pseudoscalar resonances to top quarks allow to distinguish high-scale Extended-Technicolor-type fermion mass generation from fermion partial compositeness and low-scale mass generation via an induced vacuum expectation value of a doublet coupled to the composite sector. These different possible origins of fermion masses are thus accessible via weak-scale physics searched for at the LHC.
description: 6 pages, 3 figures. Discussion of fermion partial compositeness added, typos improved
Fundamental properties of vortex rings
Creators: name: Cubitt., Leonard John
Publisher: name: Monash University
Year: 2021
Subjects: classificationCode: 401204
subject: Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics)

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Scale-free spanning trees: complexity, bounds and algorithms
Creators: name: Orlovich, Yury
name: Kukharenko, Kirill
name: Kaibel, Volker
name: Skums, Pavel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: G.2.1; G.2.2
subject: 05C05 (Primary), 92D30, 90C10(Secondary)

description: We introduce and study the general problem of finding a most "scale-free-like" spanning tree of a connected graph. It is motivated by a particular problem in epidemiology, and may be useful in studies of various dynamical processes in networks. We employ two possible objective functions for this problem and introduce the corresponding algorithmic problems termed $m$-SF and $s$-SF Spanning Tree problems. We prove that those problems are APX- and NP-hard, respectively, even in the classes of cubic, bipartite and split graphs. We study the relations between scale-free spanning tree problems and the max-leaf spanning tree problem, which is the classical algorithmic problem closest to ours. For split graphs, we explicitly describe the structure of optimal spanning trees and graphs with extremal solutions. Finally, we propose two Integer Linear Programming formulations and two fast heuristics for the $s$-SF Spanning Tree problem, and experimentally assess their performance using simulated and real data.
Maximising the contribution of the Australian road transport system to national outcomes
Creators: name: Cox., John B.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Geometric symmetries in light nuclei
Creators: name: Bijker, Roelof
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The algebraic cluster model is is applied to study cluster states in the nuclei 12C and 16O. The observed level sequences can be understood in terms of the underlying discrete symmetry that characterizes the geometrical configuration of the alpha-particles, i.e. an equilateral triangle for 12C, and a regular tetrahedron for 16O. The structure of rotational bands provides a fingerprint of the underlying geometrical configuration of alpha-particles.
description: 4 pages, 2 figures, 2 tables, invited talk Cluster '16, Napels, Italy, to be published in J. Phys. Conf. Ser
title: Thallium isotope ratios record amphibole-dominated fractionation of Earth’s earliest continental crust
Creators: name: Schannor, Mathias
name: Freymuth, Heye
name: Reimink, Jesse
name: Rehkämper, Mark
name: Williams, Helen
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Earth’s oldest continental crust is found in cratonic nuclei comprised of tonalite-trondhjemite-granodiorites (TTGs). However, the nature of the source materials that formed TTGs, as well as the timing and mechanisms of its formation remain controversial. Current models for the formation of Archean TTGs are (i) vertical subduction and partial melting of the subducting hydrated oceanic crust, (ii) partial melting at the base of plume-generated oceanic plateaux within the garnet stability field, and (iii) fractional crystallization of mafic-intermediate magmas and accumulation of plagioclase ± amphibole [1, 2, 3]. The thallium stable isotope composition of magmatic rocks identify distinct components in modern subduction zone settings [4] and thus can be exploited to address early continental crust formation. Here we report Tl isotope compositions for rocks from the Acasta Gneiss Complex (AGC) in Canada, which contains the oldest known evolved crust, with igneous crystallization ages ranging from 4.03 to 2.95 Gyr [5]. Tonalitic gneisses of the ~4 Gyr old Idiwhaa unit have ε205Tl values in the range of -4.0 ± 0.3 to -1.1 ± 0.4 that correlate with decreasing Dy/Yb and Dy/Dy*. The correlation follows indices of magmatic differentation, which is consistent with extensive amphibole fractionation at shallower depths than the garnet stability field.

[1] Foley et al. (2002) Nature 417, 637-740. [2] Zegers & Van Keken (2001) Geology 29, 1083-1086. [3] Laurent et al. (2020) Nat Geo 13, 163–169. [4] Nielsen et al. (2017) Rev Mineral Geochem 82, 759-798. [5] Bowring et al. (1989) Geology 17, 971-975.
title: The Shahejie Formation in the Dongpu Depression, Bohai Bay Basin, China: Geochemical investigation of the origin, deposition and preservation of organic matter in a saline lacustrine environment during the Middle Eocene
Creators: name: Zheng, Tianyu
name: Zieger, Laura
name: Baniasad, Alireza
name: Grohmann, Sebastian
name: Littke, Ralf
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
A new set of geochemical, petrographical and mineralogical data on important petroleum source rocks from Eocene Shahejie Formation in the Bohai Bay Basin, Eastern China is presented to investigate organic matter precursor material, thermal maturity and paleoenvironment during deposition of the Es3U, Es3L, Es3M and Es4U members. Different maturity parameters determine early mature to peak oil mature stages and maturity increase with burial depth. Alginite is the predominant maceral, whereas vitrinite and inertinite are rare. Studied shales and marlstones were deposited under episodic PZA as revealed by aryl isoprenoids. Bottom water conditions were anoxic most of the time except for Es3M. A fairly uniform biomarker composition displayed in Es4U indicates relatively stable hypersaline lake conditions with a shallow chemocline based on the high Gammacerane Index ˃0.6 and abundant aryl isoprenoids. Salinity changed during deposition of Es3L according to variable C24 Tet-related parameters and evaporite minerals content. The aquatic algal organisms, i.e. haptophyte algae, diatoms and bryophytes which are reflected by abundant nC37–39 alkanes, a variable sterane pattern, and other biomarkers, were flourishing during Es3L. Small concentration of specific PAHs, i.e. retene, cadalene, fluoranthene, indeno[1,2,3-cd]pyrene and benzo[ghi]perylene in Es3L, may be attributed to limited terrigenous input. Es3M was deposited in a normal lacustrine environment under rather low salinity conditions with substantial input of organic matter derived from algae. During Es3U, saline lake conditions were re-established accompanied by algal and microbial input, especially cyanobacteria as deduced from MMAs and 2α-MeHs, methanogens from abnormally abundant phytane, PMI, squalane, and methanotrophs from 3β-MeHs.
Excitonic gap formation and condensation in the bilayer graphene structure
Creators: name: Apinyan, V.
name: Kopeć, T. K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied the excitonic gap formation in the Bernal Stacked, bilayer graphene (BLG) structures at half-filling. Considering the local Coulomb interaction between the layers, we calculate the excitonic gap parameter and we discuss the role of the interlayer and intralayer Coulomb interactions and the interlayer hopping on the excitonic pair formation in the BLG. Particularly, we predict the origin of excitonic gap formation and condensation, in relation to the farthermost interband optical transition spectrum. The general diagram of excitonic phase transition is given, explaining different interlayer correlation regimes. The temperature dependence of the excitonic gap parameter is shown and the role of the chemical potential, in the BLG, is discussed in details.
description: 16 pages, 14 figures
title: Taking the pressure out of the Archean Metamorphism: The role of CO2 in assessing metamorphic conditions of the Isua supracrustal belt, W-Greenland
Creators: name: Müller, Thomas
name: Sorger, Dominik
name: Webb, Alexander
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
The Eoarchean Isua Supracrustal Belt (ISB), West Greenland exposes one of the oldest rock records on Earth. Its tectonic setting is still subject of debate with interpretations ranging from plate tectonics to vertical tectonics. Information on the origin (mantle rocks vs. cumulates) and metamorphic P-T-X evolution of ultramafic lenses exposed in the Western part of the ISB may hold the key to shed substantial light on the geodynamic evolution. While the geochemical signatures are non-conclusive in view of the origin, there is a general agreement of high to ultrahigh pressure conditions for the metamorphic overprint based on the presence of titanian clinohumite und titanian chondrodite, phases typically reported as indicative for high pressure metamorphism in ultramafics.

In this contribution we present results assessing the role of CO2 using a combination of textural analysis and thermodynamic calculations. It is shown that the stability fields of the observed mineral assemblage is strongly controlled by the fluid composition (XCO2). While high pressure conditions (> 2 GPa) are limited to a narrow range of fluid composition, thermodynamic modelling reveals that the formation of the observed reaction textures including the formation of the Ti-phases can be readily achieved via  cooling at amphibolite facies conditions (580 to 500 °C at 1 GPa) in the presence of a CO2-bearing fluid in agreement with the PT conditions determined for the rest of the ISB. Hence, the general wisdom of Ti-clinohumite and Ti-chondrodite being unequivocal indicative of high to ultrahigh pressure conditions in ultramafic rocks has to be abounded.
Quantitative unique continuation for spectral subspaces of Schrödinger operators with singular potentials
Creators: name: Dicke, Alexander
name: Rose, Christian
name: Seelmann, Albrecht
name: Tautenhahn, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Pxx (Primary) 35J10, 35B60 (Secondary)

description: Recent (scale-free) quantitative unique continuation estimates for spectral subspaces of Schrödinger operators are extended to allow singular potentials such as certain $L^p$-functions. The proof is based on accordingly adapted Carleman estimates. Applications include Wegner and initial length scale estimates for random Schrödinger operators and control theory for the controlled heat equation with singular heat generation term.
description: 18 pages; updated references, some typos fixed, minor editorial changes
Integrated density of states of the Anderson Hamiltonian with two-dimensional white noise
Creators: name: Matsuda, Toyomu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60H25, 60H20, 35J10, 35P20, 82B44

description: We construct the integrated density of states of the Anderson Hamiltonian with two-dimensional white noise by proving the convergence of the Dirichlet eigenvalue counting measures associated with the Anderson Hamiltonians on the boxes. We also determine the logarithmic asymptotics of the left tail of the integrated density of states. Furthermore, we apply our result to a moment explosion of the parabolic Anderson model in the plane.
description: 38 pages
Investigation of negatively charged biopolymers for stabilizing enzymes and preventing aggregation
Creators: name: Nguyen, Kaitlyn
Publisher: name: No Publisher Supplied
Year: 2022

description: Proteins and peptides are macromolecules involved in most function processes within cells of living organisms. Proteins provide functional and structural support, such as catalyzing biochemical reactions, serving as sources of energy, and maintaining cell shapes. However, sometimes, proteins cannot be folded accurately due to cellular synthesis mistakes or disrupted by other molecules. Misfolded or aggregated proteins become toxic to cells and can cause many neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and Huntington's disease. Thus, it is important to develop molecules and methods that can reduce aggregated proteins. In this thesis, first, I studied how short peptides selected from microarray screening were able to inhibit enzymes and to trigger the aggregation of enzymes. Peptide-protein aggregations were characterized by bioactivity assays and structural analysis of dynamic light scattering and atomic force microscope. Further studies showed that peptide-protein aggregations could be reduced by adding negatively charged biopolymers of polyphosphates, ssDNA, and low pI peptides, possibly due to the disruption of the electrostatic interaction between peptides and proteins in the aggregation. Moreover, these biopolymers were able to recover the activity of aggregated and inhibited peptide/β-Gal complex. Negatively charged biopolymers could also serve as chaperones to stabilize the enzymes at higher temperatures. They could be used in high-throughput screening assays to reduce peptides/protein aggregation and thereby minimize promiscuous inhibitions, or work as protein chaperones.
Scaling positive random matrices: concentration and asymptotic convergence
Creators: name: Landa, Boris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 60B20, 60F10, 65F35,

description: It is well known that any positive matrix can be scaled to have prescribed row and column sums by multiplying its rows and columns by certain positive scaling factors (which are unique up to a positive scalar). This procedure is known as matrix scaling, and has found numerous applications in operations research, economics, image processing, and machine learning. In this work, we investigate the behavior of the scaling factors and the resulting scaled matrix when the matrix to be scaled is random. Specifically, letting $\widetilde{A}\in\mathbb{R}^{M\times N}$ be a positive and bounded random matrix whose entries assume a certain type of independence, we provide a concentration inequality for the scaling factors of $\widetilde{A}$ around those of $A = \mathbb{E}[\widetilde{A}]$. This result is employed to bound the convergence rate of the scaling factors of $\widetilde{A}$ to those of $A$, as well as the concentration of the scaled version of $\widetilde{A}$ around the scaled version of $A$ in operator norm, as $M,N\rightarrow\infty$. When the entries of $\widetilde{A}$ are independent, $M=N$, and all prescribed row and column sums are $1$ (i.e., doubly-stochastic matrix scaling), both of the previously-mentioned bounds are $\mathcal{O}(\sqrt{\log N / N})$ with high probability. We demonstrate our results in several simulations.
Design, status and test of the Mu2e crystal calorimeter
Creators: name: Atanov, N.
name: Baranov, V.
name: Budagov, J.
name: Carosi, R.
name: Cervelli, F.
name: Colao, F.
name: Cordelli, M.
name: Corradi, G.
name: Danè, E.
name: Davydov, Y. I.
name: Di Falco, S.
name: Donati, S.
name: Donghia, R.
name: Echenard, B.
name: Flood, K.
name: Giovannella, S.
name: Glagolev, V.
name: Grancagnolo, F.
name: Happacher, F.
name: Hitlin, D. G.
name: Martini, M.
name: Miscetti, S.
name: Miyashita, T.
name: Morescalchi, L.
name: Murat, P.
name: Piacentino, G. M.
name: Pezzullo, G.
name: Porter, F. C.
name: Raffaelli, F.
name: Saputi, A.
name: Sarra, I.
name: Spinella, F.
name: Tassielli, G.
name: Tereshchenko, V.
name: Usubov, Z.
name: Zhu, R. Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Mu2e experiment at Fermilab searches for the charged-lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of a aluminum nucleus. The dynamic of such a process is well modeled by a two-body decay, resulting in a monoenergetic electron with an energy slightly below the muon rest mass (104.967 MeV). The calorimeter of this experiment plays an important role to provide excellent particle identification capabilities and an online trigger filter while aiding the track reconstruction capabilities. The baseline calorimeter configuration consists of two disks each made with about 700 undoped CsI crystals read out by two large area UV-extended Silicon Photomultipliers. These crystals match the requirements for stability of response, high resolution and radiation hardness. In this paper we present the final calorimeter design.
Information Content of Gravitational Radiation and the Vacuum
Creators: name: Bousso, Raphael
name: Halpern, Illan
name: Koeller, Jason
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Known entropy bounds, and the Generalized Second Law, were recently shown to imply bounds on the information arriving at future null infinity. We complete this derivation by including the contribution from gravitons. We test the bounds in classical settings with gravity and no matter. In Minkowski space, the bounds vanish on any subregion of the future boundary, independently of coordinate choices. More generally, the bounds vanish in regions where no gravitational radiation arrives. In regions that do contain Bondi news, the bounds are compatible with the presence of information, including the information stored in gravitational memory. All of our results are consistent with the equivalence principle, which states that empty Riemann-flat spacetime regions contain no classical information. We also discuss the possibility that Minkowski space has an infinite vacuum degeneracy labeled by a choice of Bondi coordinates (a classical parameter, if physical). We argue that this degeneracy cannot have any observational consequences if the equivalence principle holds. Our bounds are consistent with this conclusion.
description: 15 pages, 4 figures. v2: one definition (integrated GSL) corrected, references updated
On a Class of Nonlocal Obstacle Type Problems Related to the Distributional Riesz Fractional Derivative
Creators: name: Lo, Catharine W. K.
name: Rodrigues, José Francisco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this work, we consider the nonlocal obstacle problem with a given obstacle $ψ$ in a bounded Lipschitz domain $Ω$ in $\mathbb{R}^{d}$, such that $\mathbb{K}_ψ^s=\{v\in H^s_0(Ω):v\geqψ\text{ a.e. in }Ω\}\neq\emptyset$, given by \[u\in\mathbb{K}_ψ^s:\langle\mathcal{L}_au,v-u\rangle\geq\langle F,v-u\rangle\quad\forall v\in\mathbb{K}^s_ψ,\] for $F\in H^{-s}(Ω)$, the dual space of $H^s_0(Ω)$, $0
Assessement of Prevalence of Prelactal Feeding and Associated Factors Among Mothers of Children Less Than One Year of Age in Mizan-Aman Town Benchmaji Zone, South West Ethiopia
Creators: name: Amare, Muluken
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Back ground: Despite the importance of early initiation of breastfeeding and exclusive breastfeeding, the prelacteal feeding is widely practiced in Ethiopia. This study aimed to assess the prevalence of prelactal feeding and associated factors among mothers of children less than one year age in Mizan-Aman town, southwest Ethiopia. Method: A community-based cross-sectional study with mixed method was employed. Four hundred eighty seven (487) mothers of children aged less than 12 months were selected by multistage randomized sampling technique. The quantitative data was collected by using Interview based structured questionnaire. Descriptive statistics, binary and multivariable logistic regression analysis were employed to identify the factors associated with prelacteal feeding practices. Variables with a p-value < 0.05 were identified as statistically significant factors. Qualitative data was collected by focus group discussion and analyzed using thematic frameworks. Result: The prevalence of prelacteal feeding was (21.9% ) in Mizan- Aman town. The common type of prelactal food was water with tenea adam/rue 49(10.1%). The major reason were; 49(10.1%) Cultural practice followed by 45 (9.3%) to clean infants bowel/throat/mouth. Mothers who did know on the risks associated with prelacteal feeding, multipara mothers, having ≥4 number of children and infant's birth order 4-6 were important positive predictors of prelacteal feeding practice. Conclusion & Recommendation: Prelacteal feeding is commonly practiced in Mizan- Aman town. Mothers who did know on the risks associated with prelacteal feeding, multipara mother, having ≥4 number of children and infant's birth order 4-6 were important positive predictors of prelacteal feeding practice. Promotion of behavioral change communication activities on avoidance of prelactal feeding, Promotion of intensive nutrition education program by giving special emphasis to multipara mothers and should be implemented in the health facility and community based by health extension workers and researcher should consider further follow up study in prelactal feeding in Mizan-Aman town is recommended. Key words: prelactal feeding, Children aged less than 12 months, Mizan-Ama
Zeugnis (1937-05-26)
Creators: name: Jewish Hospital In Hamburg
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Preuss, Siegfried
subject: Medical colleges
valueUri: http://id.worldcat.org/fast/1013952
subject: Jewish hospitals
valueUri: http://id.worldcat.org/fast/1739255
subject: Employment references
valueUri: http://id.worldcat.org/fast/909381

description: Typed recommendation letter addressed to Professor D. Wildboz from someone at the Institute of Pathology at the Jewish Hospital in Hamburg (Bern). Discusses Siegfried Preuss' work with "carcinoide" and argues that it should be accepted as a doctoral dissertation.
PredDiff: Explanations and Interactions from Conditional Expectations
Creators: name: Blücher, Stefan
name: Vielhaben, Johanna
name: Strodthoff, Nils
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: PredDiff is a model-agnostic, local attribution method that is firmly rooted in probability theory. Its simple intuition is to measure prediction changes while marginalizing features. In this work, we clarify properties of PredDiff and its close connection to Shapley values. We stress important differences between classification and regression, which require a specific treatment within both formalisms. We extend PredDiff by introducing a new, well-founded measure for interaction effects between arbitrary feature subsets. The study of interaction effects represents an inevitable step towards a comprehensive understanding of black-box models and is particularly important for science applications. Equipped with our novel interaction measure, PredDiff is a promising model-agnostic approach for obtaining reliable, numerically inexpensive and theoretically sound attributions.
description: 35 pages, 20 Figures, accepted journal version, code available at https://github.com/AI4HealthUOL/preddiff-interactions
title: Observing high pressure melting and crystallization of silicates utilizing MHz diffraction at the European X-ray free electron laser
Creators: name: Prescher, Clemens
name: Morard, Guillaume
name: Baron, Marzena
name: McWilliams, Ryan Stewart
name: #2292, EuXFEL community proposal
name: #2605, EuXFEL community proposal
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
The opening of the European X-ray Free Electron Laser near Hamburg (EuXFEL) offers promising new experimental opportunities for studying materials. It can deliver X-rays with energies up to 25 keV and its brightness is so large, that a single pulse exhibits enough intensity to generate a diffraction image. In combination with the 4.5 MHz (220 ns separation) rate of pulse delivery, and new detector technologies (AGIPD), the EuXFEL enables unique capabilities for time resolved diffraction experiments.

Coupling these new capabilities with laser heated diamond anvil cells, enables the study of materials under planetary conditions with unprecedented time resolution, possibly overcoming previous issues with chemical reactions between the sample and its environment as well as the study of transient phenomena such as phase transformations.

We will present first results and challenges of experiments investigating silicates under extreme conditions at the “High Energy Density” (HED) instrument of the European XFEL during two community proposals which brought together around fifty international participants (proposal numbers #2292 and #2605).
Fatigue of an Al-Mg-Si casting alloy [microform]
Creators: name: Couper., Malcolm James
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: AN INTERDISCIPLINARY APPROACH FOR CHARACTERIZING ANCIENT MATERIALS: BUILDING MATERIALS FROM THE HELLENISTIC-ROMAN CITY OF SOLUNTO (SICILY) AS A CASE OF STUDY
Creators: name: Boese, Beatrice
name: Amicone, Silvia
name: Cantisani, Emma
name: Schön, Frerich
name: Berthold, Christoph
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
This presentation gives an overview of the advantages combining thin-section optical petrography with X-ray microdiffractometry (µ-XRD2) and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) for the analysis of well contextualised archaeological materials.

The Hellenistic-Roman city of Solunto (Sicily) offers an ideal case of study as the houses, in which typically lime based mortars and plasters are used, are well studied from a building history point of view.

To characterize this type of building materials in detail optical thin section petrography is a well-established tool not only regarding the minerals, but more important for determining textural and compositional features. However, optical microscopy has its limitations to characterize opaque phases or minerals below the optical resolution. This can be overcome using µ-XRD2, allowing non-destructive and local highly resolved structural analysis of the uncovered thin sections, where an identification of minerals with optical microscopy is not possible.

Pairing these two methods with SEM-EDS, results in a comprehensive study of the microstructural characteristics and chemical composition. This makes it possible to analyze not only the aggregates and inclusions but also the typically fine crystalline binder within this type of building material.

Our results, in combination with the analysis of the archaeological context, provide new insights into technology transfer in general, but also a better understanding of the different and interconnected strategies of selecting and processing local resources and the adaption of the used mortars to various architectural features.
Radiative recombination of twisted electrons with bare nuclei: going beyond the Born approximation
Creators: name: Zaytsev, V. A.
name: Serbo, V. G.
name: Shabaev, V. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a fully relativistic investigation of the radiative recombination of a twisted electron with a bare heavy nucleus. The twisted electron is described by the wave function which accounts for the interaction with the nucleus in all orders in $αZ$. We use this wave function to derive the probability of the radiative recombination with a single ion being shifted from the twisted electron propagation direction. We also consider more realistic experimental scenarios where the target is either localized (mesoscopic) or infinitely wide (macroscopic). The situation when the incident electron is a coherent superposition of two vortex states is considered as well. For the nonrelativistic case we present analytical expressions which support our numerical calculations. We study in details the influence of the electron twistedness on the polarization and angular distribution of the emitted photon. It is found that these properties of the outgoing photon might be very sensitive to the total angular momentum and kinematic properties of twisted beams. Therefore, the recombination of the twisted electrons can serve as a valuable tool for atomic investigations as well as for the diagnostics of the vortex electron beams.
description: 20 pages, 7 figures
Harmonic Analysis and Statistics of the First Galois Cohomology Group
Creators: name: Alberts, Brandon
name: O'Dorney, Evan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We utilize harmonic analytic tools to count the number of elements of the Galois cohomology group $f\in H^1(K,T)$ with discriminant-like invariant ${\rm inv}(f)\le X$ as $X\to\infty$. Specifically, Poisson summation produces a canonical decomposition for the corresponding generating series as a sum of Euler products for a very general counting problem. This type of decomposition is exactly what is needed to compute asymptotic growth rates using a Tauberian theorem. These new techniques allow for the removal of certain obstructions to known results and answer some outstanding questions on the generalized version of Malle's conjecture for the first Galois cohomology group.
description: 29 pages. Edited to correct an error in the main proof, incorporating changes published in a separate corrigendum. Minor typos also fixed
Assessment Of cold Chain Quality Management For Pharmaceuticals In Government Hospitals In Addis Ababa Experimental/Quasi-Experimental Approach
Creators: name: Menberu, Endale
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Background: Cold chain management for pharmaceuticals is an extension of Good Manufactur-ing Practice. The entire supply chain system is expected to keep this practice throughout the chain starting from the moment the pharmaceuticals/ vaccines and other medicinesreleased from the manufacturer until they reach to the beneficiaries. The safety of these medicines depends on the properly maintaining of the system. Objective: To examine the cold chain management practice of government hospitals in Addis Ababa Design: An Experimental/Quasi experimental research design was used to record the tempera-ture of six government hospitals cold chain system cross-sectionally for one week by using Log-Tag® reader model TRIX 8 and Questionnairewhich contains basic cold chain quality manage-ment principles. Result: The practice of cold chain management in the Hospitals was described by analyzing the temperature record of the device. Reading of one hospital temperature record was not possible to extract from the device. The five hospital data had shown that 4/5 (80%) of them experience cold chain break during the study period. The result of the Questionnaire also revealed that there were gaps in the management of vaccines described in terms of lack of SOP in receiving and dispatching,absence of advisor during cold chain break and lack of decision matrix that in-dicated which types of cold chain breaks can be managed at the hospital level or higher regula-tory body advice to accept or reject vaccines exposed to high/low temperature out off the stan-dard +2ºC to +8ºC. Conclusion: There is a real gap in maintaining the standard cold chain temperature for vaccines and other cold chain medicines in the hospitals. Therefore there is need for using monitoring devices that can track temperature fluctuations and duration of exposure, developing cold chain guideline, development of experts in the area and cold chain breach decision matrix.
Biwhitening Reveals the Rank of a Count Matrix
Creators: name: Landa, Boris
name: Zhang, Thomas T. C. K.
name: Kluger, Yuval
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistics Theory (math.ST)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 62H12, 62H25

description: Estimating the rank of a corrupted data matrix is an important task in data analysis, most notably for choosing the number of components in PCA. Significant progress on this task was achieved using random matrix theory by characterizing the spectral properties of large noise matrices. However, utilizing such tools is not straightforward when the data matrix consists of count random variables, e.g., Poisson, in which case the noise can be heteroskedastic with an unknown variance in each entry. In this work, we consider a Poisson random matrix with independent entries, and propose a simple procedure termed \textit{biwhitening} for estimating the rank of the underlying signal matrix (i.e., the Poisson parameter matrix) without any prior knowledge. Our approach is based on the key observation that one can scale the rows and columns of the data matrix simultaneously so that the spectrum of the corresponding noise agrees with the standard Marchenko-Pastur (MP) law, justifying the use of the MP upper edge as a threshold for rank selection. Importantly, the required scaling factors can be estimated directly from the observations by solving a matrix scaling problem via the Sinkhorn-Knopp algorithm. Aside from the Poisson, our approach is extended to families of distributions that satisfy a quadratic relation between the mean and the variance, such as the generalized Poisson, binomial, negative binomial, gamma, and many others. This quadratic relation can also account for missing entries in the data. We conduct numerical experiments that corroborate our theoretical findings, and showcase the advantage of our approach for rank estimation in challenging regimes. Furthermore, we demonstrate the favorable performance of our approach on several real datasets of single-cell RNA sequencing (scRNA-seq), High-Throughput Chromosome Conformation Capture (Hi-C), and document topic modeling.
Electron-hole doping asymmetry of Fermi surface reconstructed in a simple Mott insulator
Creators: name: Kawasugi, Yoshitaka
name: Seki, Kazuhiro
name: Edagawa, Yusuke
name: Sato, Yoshiaki
name: Pu, Jiang
name: Takenobu, Taishi
name: Yunoki, Seiji
name: Yamamoto, Hiroshi M.
name: Kato, Reizo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: It is widely recognised that the effect of doping into a Mott insulator is complicated and unpredictable, as can be seen by examining the Hall coefficient in high $T_{\rm c}$ cuprates. The doping effect, including the electron-hole doping asymmetry, may be more straightforward in doped organic Mott insulators owing to their simple electronic structures. Here we investigate the doping asymmetry of an organic Mott insulator by carrying out electric-double-layer transistor measurements and using cluster perturbation theory. The calculations predict that strongly anisotropic suppression of the spectral weight results in the Fermi arc state under hole doping, while a relatively uniform spectral weight results in the emergence of a non-interacting-like Fermi surface in the electron-doped state. In accordance with the calculations, the experimentally observed Hall coefficients and resistivity anisotropy correspond to the pocket formed by the Fermi arcs under hole doping and to the non-interacting Fermi surface under electron doping.
description: 40 pages with 17 figures, accepted for publication in Nature Communications
Transcript of Credit Hours
Creators: name: Uniwersytet Wrocławski
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Education
valueUri: http://id.worldcat.org/fast/902499
subject: Preuss, Siegfried
subject: Universities and colleges
valueUri: http://id.worldcat.org/fast/1161597
subject: Medical colleges
valueUri: http://id.worldcat.org/fast/1013952

description: English language list of Siegfried Preuss' credit hours from the Schleisische Friedrich Wilhem Universitaet, Breslau, Medical School.
Thermomechanical treatment for superplasticity of a commercial magnesium alloy
Creators: name: Cottam., Ryan Edwin
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Credit Drivers: Empirical Study on Commercial Banks in Ethiopia
Creators: name: Sibehate, Sintayehu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Financial Development is a cornerstone for economic growth and development. Banks in developing countries like Ethiopia play dominant role in the financial sector through playing intermediation function. Hence, increasing credit supply while also ensuring the soundness of the finical sector is key for accelerating economic activity. However, like in most African countries, bank credit in Ethiopia is low though credit to GDP is growing steadily overtime. Hence, this research investigates credit drivers of Ethiopian commercial banking sector during the period from 2002 to 2014. It was conducted based on the hypothesis that credit in Ethiopian banking industry is determined by bank, industry and macro-economic specific factors. Several theories and empirical outcomes were examined to explain the determinants of bank credit supply. The variables were selected based on both theoretical and empirical literatures. Explanatory design, quantitative research approach and secondary data were used in carrying out this research. The regression technique was used to estimate the model using the EViews 8 econometric package. The results obtained indicated that bank lending is determined by banks and industry specific factors than macroeconomic specific factors. And specifically the estimation results show that deposit volume, capital of banks, liquidity position, investment portfolio, cost of financial intermediation and market concentration have significant effect on bank lending. However, economic growth proxied by real GDP and inflation are not significant. The study recommends banks to increase deposit level, manage liquidity effectively, enhance their capital level and decrease the cost of financial intermediation. Similarly, NBE needs to enhance competition with strengthened supervision. Further studies were recommended in the areas by considering additional variables and at regional and cross country level.
title:  Emozioni e politica Per un confronto tra individualismo e valori collettivi
Creators: name: Iapoce  , Angiola
Publisher: name: Roma TrE-Press
Year: 2022

description: Alcune note sul rapporto tra le emozioni che sono personali e private e la costruzione di una società realmente democratica, cioè rispettosa dei sentimenti di ciascuno. È necessario un percorso per un soggetto nuovo, non più scisso tra vita privata e volto pubblico e per questo è necessario raccogliere la grande lezione della psicoanalisi e della centralità dei sentimenti e delle emozioni anche nella sfera sociale. Si tratta di valorizzare la concretezza della contingenza contro ogni pensiero che nell’astrazione cancella il singolo.

Some notes about the relationship between personal and private emotions and the construction of a society really democratic, respectful of the individual feelings. It’s necessary a path for a renewed subject, without a split between private life and public face. We need the great psychoanalytical lesson on the value of emotions and feelings. It’s necessary to respect the concrete worth of the single human being against every abstract way of social life.
description: B@belonline vol. 9 Subversion and resistance in Hegel: paradigms, figures, resonances /Sovversione e resistenza in Hegel: paradigmi, figure, risonanze
A hybrid superconducting quantum dot acting as an efficient charge and spin Seebeck diode
Creators: name: Hwang, Sun-Yong
name: Sanchez, David
name: Lopez, Rosa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a highly efficient thermoelectric diode device built from the coupling of a quantum dot with a normal or ferromagnetic electrode and a superconducting reservoir. The current shows a strongly nonlinear behavior in the forward direction (positive thermal gradients) while it almost vanishes in the backward direction (negative thermal gradients). Our discussion is supported by a gauge-invariant current-conserving transport theory accounting for electron-electron interactions inside the dot. We find that the diode behavior is greatly tuned with external gate potentials, Zeeman splittings or lead magnetizations. Our results are thus relevant for the search of novel thermoelectric devices with enhanced functionalities.
description: 10 pages, 4 figures