cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flux Compactifications Grow Lumps
Creators: name: Dahlen, Alex
name: Zukowski, Claire
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The simplest flux compactifications are highly symmetric---a $q$-form flux is wrapped uniformly around an extra-dimensional $q$-sphere. In this paper, we investigate solutions that break the internal SO($q+1$) symmetry down to SO$(q)\times\mathbb Z_2$; we find a large number of such lumpy solutions, and show that often at least one of them has lower vacuum energy, larger entropy, and is more stable than the symmetric solution. We construct the phase diagram of lumpy solutions, and provide an interpretation in terms of an effective potential. Finally, we provide evidence that the perturbatively stable vacua have a non-perturbative instability to spontaneously sprout lumps; we give an estimate of the decay rate and argue that generically it is exponentially faster than all other known decays.
description: 24 pages, 10 figures; v2: version accepted to PRD, minor edits and added citations
ENHANCING THE EFFECTIVENESS OF TRANSPORT PROJECTS: KEY ISSUES IN DESIGN, IMPLEMENTATION, AND MANAGEMENT
Creators: name: Ikramov, Jaxongir
Publisher: name: Zenodo
Year: 2024

description: This article explores the essential aspects of designing, implementing, and managing transport projects with a focus on enhancing their effectiveness. It addresses the challenges faced by project managers in the transport sector and suggests methodologies to overcome these challenges, ultimately improving project outcomes.
title: Thaumàzein | Rivista di Filosofia, Vol. 10 No. 2 (2022): Cosmologia filosofica / Philosophical Cosmology
title: Cosmologia filosofica / Philosophical Cosmology
titleType: AlternativeTitle
Creators: name: Thaumàzein | Rivista Di Filosofia
Publisher: name: Thaumàzein | Rivista di Filosofia
Year: 2022

description: Cosmology is the science of the origins and structure of the universe. However, it derives from kosmos, which means world, and this term indicates both the universe and the earth, the celestial sphere and the sphere of human history. Cosmology in the philosophical sense must therefore consider both aspects, although it is not easy to understand their connection. Especially today, because the “universe” side is a highly specialised scientific subject, while the “earth” side is dominated by globalisation, which leads to an exclusive focus on human affairs. With globalisation, a kind of worldless wordliness has taken place. The aim of this issue is therefore to bring Weltfrage back to the centre of philosophy, through a sampling of cosmological thinking in a broad sense. Indeed, such a thinking concerns world models, but these models are not only cosmographies and more or less exact astronomical representations. They are also myths, images, metaphors, symbols, which intersect metaphysics and religion no less than ethics and politics. A world is only given within a vision, halfway between reason and imagination, as it is rooted in the primordial layers of experience while pushing towards the most daring speculations on the origin, connection and end of all things. This issue therefore presents some material for exploring the concept of the world and seeing anew the threads that bind, even in a conflicting form, heaven and earth.
description: Introduction...9-22 L’ultima rivoluzione spaziale globale...295-314 Regimi geo-scopici...274-294 Idea, orizzonte, totalità: verso una cosmologia fenomenologica...207-233 Espace comme visage de la nature?...234-252 La fine del mondo....253-273 The role of Poincaré’s study of the celestial mechanics in the development of Deleuze and Guattari’s chaosmological thinking...185-206 Come il cosmo finì per diventare abisso: horror fati e rottura rivoluzionaria nella lettura benjaminiana dell’Eternité par les astres di Blanqui...315-336 La problematica natura onto-teologica del cosmo in Numenio di Apamea...46-66 Il sole al tramonto...357-376 Il mondo locale: l’esperienza dell’osservatore fra fisica relativistica e neuroscienze...160-184 The challenge of relativistic cosmology to describe the universe...135-159 La vita divina degli astri. Cosmologia e fisica in Giordano Bruno...91-112 Eriugena on the eternity and creation of the world...67-90 Il cosmo come mezzo, il cosmo come fine: il Timeo di Platone, Empedocle e Aristotele sulla relazione tra macrocosmo e microcosmo...24-45 La natura delle cose singolari in Spinoza...338-356 The concept of world and the American Revolution...113-133
Astrophysical aspects of milli-charged dark matter in a Higgs-Stueckelberg model
Creators: name: Santos, A. L. dos
name: Hadjimichef, D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An extension of the Standard Model is studied, in which two new vector bosons are introduced, a first boson $Z'$ coupled to the SM by the usual minimal coupling, producing an enlarged gauge sector in the SM. The second boson $A'$ field, in the dark sector of the model, remains massless and originates a dark photon $γ'$. A hybrid mixing scenario is considered based on a combined Higgs and Stueckelberg mechanisms. In a Compton-like process a photon scattered by a WIMP is converted into a dark photon. This process is studied, in an astrophysical application obtaining an estimate of the impact on stellar cooling of white dwarfs and neutron stars.
Enhanced anticorrosion performance of epoxy primer coating on zinc in 3.5% NaCl by micro and nano particulates of biopolymers
Creators: name: Pais, Mikitha
name: Rao, Padmalatha
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Space Science
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Anticorrosive coatings are extensively used to protect metals and alloys, especially in the marine environment. This study reports the enhancement of coating performance of epoxy primer coating on zinc in 3.5% NaCl at 303 K by impregnating the epoxy primer with micro and nano particulates of biopolymers. Initially, conditions were standardized to achieve optimum efficiency of Maltodextrin (MLD) and Glycogen (GLY) for corrosion of zinc in 3.5% NaCl. The optimum concentration of inhibitors was then added to the epoxy primer coating a applied on zinc. Anti-corrosion performance of epoxy primer with biopolymer was compared with that of standard coating, which was devoid of biopolymers. The coating characteristics were further enhanced by incorporating nanoparticles of MLD and GLY into the epoxy primer matrix. Potentiodynamic polarization measurement (PDP) and Electrochemical impedance spectroscopy (EIS) were employed to study corrosion rate measurement. Detailed surface morphology was studied using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) techniques. Electrochemical and surface studies clearly demonstrated the capability of micro and nanosized biopolymers in improving the anti-corrosion performance of the coating. The average efficiency of epoxy primer coating improved to a considerable extent by studying biopolymers. The overall efficiency of the coating formulation was found to be 99.5%. Surface morphology studies showed that coating thickness increased to 32.1 µm from 27.2 µm after incorporating biopolymers. In addition to this, there was a remarkable change in the surface roughness of epoxy primer coating in contact with 3.5% NaCl after the addition of biopolymers into it. The coating formulation developed turned out to be eco-friendly with significant environmental benefits.
Enterobacterial common antigen in mutant strains of Salmonella.
Creators: name: Männel, Daniela N.
name: Mäkelä, P. H.
name: Mayer, H.
Publisher: name: Universität Regensburg
Year: 1978
Subjects: subject: 610 Medizin
subject: Acetylglucosamine/analysis
subject: Antigens, Bacterial/analysis
subject: Genes
subject: Mutation
subject: Polysaccharides, Bacterial/analysis
subject: Salmonella/immunology
subject: Salmonella typhimurium/immunology

description: A good correlation was found to exist between the serologically determined presence of enterobacterial common antigen (ECA) and the amount of the rare sugar constituent D-mannosaminuronic acid. Strains classified by serological techniques as ECA+, ECA-, and ECAtrace were found to possess the expected amounts of mannosaminuronic acid in the ECA-enriched phenol-soluble PL-L fractions. This correlation provides strong evidence on the identity of the mannosaminuronic acid-glucosamine polymer with the ECA as defined by Kunin (J. Exp. Med. 118:565-586, 1963).
Role of a lipopolysaccharide gene for immunogenicity of the enterobacterial common antigen
Creators: name: Schmidt, G.
name: Männel, Daniela N.
name: Mayer, H.
name: Whang, H. Y.
name: Neter, E.
Publisher: name: Universität Regensburg
Year: 1976
Subjects: subject: 610 Medizin
subject: Animals
subject: Antibodies, Bacterial/analysis
subject: Antibody Formation
subject: Conjugation, Genetic
subject: Epitopes
subject: Escherichia coli/metabolism
subject: Genes
subject: Lipopolysaccharides/biosynthesis
subject: Mutation
subject: Polysaccharides, Bacterial/biosynthesis
subject: Rabbits
subject: Shigella/metabolism
subject: Transduction, Genetic

description: It is known that only certain strains of the family of Enterobacteriaceae, notably rough (R) mutants with the type R1 or R4 core, evoked antibodies in high titers against the common enterobacterial antigen (CA) after immunization of rabbits with heated cell suspensions. The present investigation deals with genetic and immunochemical aspects of certain R1 and R4 mutants isolated from Escherichia coli 08 and various Shigella serotypes which, unexpectedly, do not induce CA antibody formation. Immunochemical and genetical (transduction and conjugation) experiments revealed that the rough phenotype of these special mutants was evoked by a mutation of pyrE-linked rfa gene, called rfaL, which is involved in translocation of O-specific polysaccharides onto the lipopolysaccharide core. The transduction of the defective rfaL, allele into appropriate rough recipients results in transductants which have simultaneously lost the ability to evoke CA antibodies. This finding suggests that a close connection exists between the function of the rfaL gene and the expression of CA immunogenicity in R1 and R4 mutants. One of the strains synthesized neither O-hapten nor CA, suggesting a mutation in a region equivalent to the rfe genes of Salmonella.
Enhanced anticorrosion performance of epoxy primer coating on zinc in 3.5% NaCl by micro and nano particulates of biopolymers
Creators: name: Pais, Mikitha
name: Rao, Padmalatha
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Space Science
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Anticorrosive coatings are extensively used to protect metals and alloys, especially in the marine environment. This study reports the enhancement of coating performance of epoxy primer coating on zinc in 3.5% NaCl at 303 K by impregnating the epoxy primer with micro and nano particulates of biopolymers. Initially, conditions were standardized to achieve optimum efficiency of Maltodextrin (MLD) and Glycogen (GLY) for corrosion of zinc in 3.5% NaCl. The optimum concentration of inhibitors was then added to the epoxy primer coating a applied on zinc. Anti-corrosion performance of epoxy primer with biopolymer was compared with that of standard coating, which was devoid of biopolymers. The coating characteristics were further enhanced by incorporating nanoparticles of MLD and GLY into the epoxy primer matrix. Potentiodynamic polarization measurement (PDP) and Electrochemical impedance spectroscopy (EIS) were employed to study corrosion rate measurement. Detailed surface morphology was studied using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) techniques. Electrochemical and surface studies clearly demonstrated the capability of micro and nanosized biopolymers in improving the anti-corrosion performance of the coating. The average efficiency of epoxy primer coating improved to a considerable extent by studying biopolymers. The overall efficiency of the coating formulation was found to be 99.5%. Surface morphology studies showed that coating thickness increased to 32.1 µm from 27.2 µm after incorporating biopolymers. In addition to this, there was a remarkable change in the surface roughness of epoxy primer coating in contact with 3.5% NaCl after the addition of biopolymers into it. The coating formulation developed turned out to be eco-friendly with significant environmental benefits.
A rat monoclonal antibody against mouse alpha and beta interferon of all molecular weight species
Creators: name: Männel, Daniela N.
name: De Maeyer, E.
name: Kemler, R.
name: Cachard, A.
name: De Maeyer-Guignard, J.
Publisher: name: Universität Regensburg
Year: 1982
Subjects: subject: 610 Medizin
subject: Animals
subject: Antibodies, Monoclonal/immunology
subject: Antibody Specificity
subject: Cross Reactions
subject: Epitopes
subject: Interferons/immunology
subject: Mice
subject: Molecular Weight
subject: Rats

description: letter
Wideband Dynamic Radio Spectra of Two Ultra-cool dwarfs
Creators: name: Lynch, C.
name: Mutel, R. L.
name: Gudel, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A number of radio-loud ultra cool dwarf stars (UCD) exhibit both continuous broadband and highly polarized pulsed radio emission. In order to determine the nature of the emission and the physical characteristics in the source region, we have made multi-epoch, wideband spectral observations of TVLM 0513-46 and 2M 0746+20. We combine these observations with archival radio data to fully characterize both the temporal and spectral properties of the radio emission. The continuum spectral energy distribution can be well modeled using gyrosynchrotron emission from mildly relativistic electrons in a dipolar field. The pulsed emission exhibits a variety of time-variable characteristics, including frequency drifts, frequency cutoffs, and multiple pulses per period. For 2M 0746+20 we determine a pulse period consistent with previously determined values. We modeled locations of pulsed emission using an oblique rotating magnetospheric model with beamed electron cyclotron maser (ECM) sources. The best-fit models have narrow ECM beaming angles aligned with the local source magnetic field direction, except for one isolated burst from 2M 0746+20. For TVLM 0513-46, the best-fit rotation axis inclination is nearly orthogonal to the line of sight. For 2M 0746+20 we found a good fit using a fixed inclination i=36 deg, determined from optical observations. For both stars the ECM sources are located near feet of magnetic loops with radial extents 1.2Rs-2.7 Rs and surface fields 2.2 - 2.5 kG. These results support recent suggestions that radio over-luminous UCDs have a global `weak field' non-axisymmetric magnetic topologies.
Phynance
Creators: name: Kakushadze, Zura
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: High Energy Physics - Theory (hep-th)
subject: General Finance (q-fin.GN)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: These are the lecture notes for an advanced Ph.D. level course I taught in Spring'02 at the C.N. Yang Institute for Theoretical Physics at Stony Brook. The course primarily focused on an introduction to stochastic calculus and derivative pricing with various stochastic computations recast in the language of path integral, which is used in theoretical physics, hence "Phynance". I also included several "quiz" problems (with solutions) comprised of (pre-)interview questions quantitative finance job candidates were sometimes asked back in those days. The course to a certain extent follows an excellent book "Financial Calculus: An Introduction to Derivative Pricing" by M. Baxter and A. Rennie.
description: 111 pages; minor misprints corrected
Research Information Infrastructure in Ukraine: First steps towards building a national CRIS
Creators: name: Kaliuzhna, Nataliia
name: Auhunas, Sabina
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2022
Subjects: subject: CRIS
subject: Research information
subject: Research information management
subject: Ukraine
subject: Konferenzschrift
subject: 004

description: Development and implementation of Current Research Information Systems (CRIS) is one of the most transparent and practical approaches to curate research information on a national level. The process of building and implementing such systems is a complex and time consuming where successful results heavily depend on the established research information infrastructure of a country, the interoperability of the systems and the quality of the information which reside in them. The purpose of this paper is to analyse the existing Ukrainian Research Information Infrastructure and identify which databases could be reused and integrated with a national Ukrainian Current Research Information System (URIS). The analysis showed that there are functional databases and registries that collect data on research activities and could be used as a data sources for the URIS. In particular, the Unified State Electronic Database on Education is a potential data source on higher educational institutions, the National Repository of Academic Texts - on metadata on research output, internal database of the National Research Foundation of Ukraine and database on research projects maintained by Ukrainian Institute of Scientific Technical and Economic Information - on projects. Secondly, it was identified that Ukrainian research infrastructure lacks complete, up-to-date registry on researchers. Finally, we discussed the challenges and solutions for further steps in building national CRIS.
title: Entwicklung eines Modells zur Prognose der Bruchbilder von thermisch vorgespannten Gläsern bei unterschiedlicher Vorspannung und Lagerung
Creators: name: Bohmann, Leon
Publisher: name: UNSPECIFIED
Year: 2024

description: Aufgrund von normativen Regelungen der Resttragfähigkeit müssen häufig zeitintensive und kostspielige Bauteilversuche zur Bewertung des Tragverhaltens von Verbundsicherheitsgläser durchgeführt werden. Die statische Konstruktion im Einbauzustand muss bei den Versuchen nachgebildet werden.
Um die Resttragfähigkeit von thermisch vorgespannten Scheiben besser absichern zu können, wurden Modelle entwickelt, die die Bruchstückgeometrien von unterschiedlich vorgespannten Scheiben prognostizieren sollen. Dabei stellte sich besonders ein Modell heraus, was auf Basis von experimentell ermittelten, konstanten Parametern zufriedenstellende Vorhersagen ermöglicht. Für eine realitätsnahe Abbildung von Bruchbildern müssen jedoch auch die räumlich abhängigen Bruchstückeigenschaften herangezogen werden.
Das in dieser Arbeit entwickelte Modell ermittelt Bruchstückeigenschaften auf Basis stochastischer Annahmen und erzeugt eine ähnliche, räumliche Abbildung der Bruchstücke. Das Modell wurde in einer erweiterbaren Python-Umgebung implementiert und erlaubt so die Weiterentwicklung durch zukünftige Forschungsarbeiten.
Generation and characterization of a lipopolysaccharide-induced and serum-derived cytotoxic factor for tumor cells
Creators: name: Männel, Daniela N.
name: Meltzer, M. S.
name: Mergenhagen, S. E.
Publisher: name: Universität Regensburg
Year: 1980
Subjects: subject: 610 Medizin
subject: Animals
subject: Cell Line
subject: Cytotoxins/pharmacology
subject: Female
subject: Fibrosarcoma/pathology
subject: Isoelectric Point
subject: Kinetics
subject: Lipopolysaccharides/pharmacology
subject: Molecular Weight
subject: Neoplasms, Experimental/pathology
subject: Tuberculosis/blood

description: Serum from Mycobacterium bovis BCG-infected mice treated with lipopolysaccharide was cytotoxic to tumor cells in vitro. Serum-induced cytotoxicity was estimated by measuring release of [3H]thymidine into culture supernatants of prelabeled tumor target cells. Serum from BCG-infected mice not treated with lipopolysaccharide or from uninfected mice treated with lipopolysaccharide was inactive. Moreover, although serum cytotoxic activity was evident with 10 syngeneic or allogeneic tumor cell lines, little or no effect was observed with normal embryonic fibroblast target cells. Maximal titers of serum cytotoxic activity were detected 14 days after BCG infection and 2 h after LPS treatment. Serum of BCT-infected, T-cell-deficient nude mice developed strong cytotoxic activity after LPS treatment; however, lipopolysaccharide-insensitive C3H/HeJ mice could produce this cytotoxic activity only after adoptive transfer with lipopolysaccharide-responsive C3H/HeN bone marrow. Physicochemical characterization of the serum cytotoxic activity revealed a heat-stable (56 degrees C, 30 min) entity with a molecular weight of about 60,000 and an isoelectric point at pH 4.8. Biological and physicochemical characteristics of this serum cytotoxic activity as defined by an in vitro assay were very similar to characteristics of tumor necrosis factor and suggest that this molecule may be a major effector mechanism for the antitumor actions of lipopolysaccharide.
Tractable diffusion and coalescent processes for weakly correlated loci
Creators: name: Jenkins, Paul A.
name: Fearnhead, Paul
name: Song, Yun S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 92D15 (Primary) 65C50, 92D10 (Secondary)

description: Widely used models in genetics include the Wright-Fisher diffusion and its moment dual, Kingman's coalescent. Each has a multilocus extension but under neither extension is the sampling distribution available in closed-form, and their computation is extremely difficult. In this paper we derive two new multilocus population genetic models, one a diffusion and the other a coalescent process, which are much simpler than the standard models, but which capture their key properties for large recombination rates. The diffusion model is based on a central limit theorem for density dependent population processes, and we show that the sampling distribution is a linear combination of moments of Gaussian distributions and hence available in closed-form. The coalescent process is based on a probabilistic coupling of the ancestral recombination graph to a simpler genealogical process which exposes the leading dynamics of the former. We further demonstrate that when we consider the sampling distribution as an asymptotic expansion in inverse powers of the recombination parameter, the sampling distributions of the new models agree with the standard ones up to the first two orders.
description: 34 pages, 1 figure
Pore Pressure Estimation Using Resistivity Log in the Southern Pattani Basin, Gulf of Thailand
Creators: name: Pongpipat Bunyanupong
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2014
Subjects: Overpressure, Eaton's Resistivity method, Eaton's Sonic method, Southern Pattani Basin, Gulf of Thailand

description: Bulletin of Earth Sciences of Thailand (BEST), 7, 2-Jan, 154-159
ANALYSIS OF DETERMINANTS OF BUSINESS DEMAND FOR INTERNET ACCESS IN ADDISS ABABA
Creators: name: Dereje Fekadu
Publisher: name: Zenodo
Year: 2006

description: Recognizing the benefits of Information Communication Technologies (ICTs) in

general and Internet in particular to the overall advancement of social, economic

and politics of a country, developing countries are investing on network

infrastructures. However, the penetration level of the countries such as Ethiopia

has been very low which will hinder the country not to reap the benefits of the

technologies. The purpose of this study was to identify the determinants of

Internet diffusion among business organization in Addis Ababa. Hence, a survey

was conducted on a random sample of businesses and a logit model of Internet

access was estimated
Lyman edges in supermassive black hole binaries
Creators: name: Generozov, Aleksey
name: Haiman, Zoltan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We propose a new spectral signature for supermassive black hole binaries (SMBHBs) with circumbinary gas disks: a sharp drop in flux blueward of the Lyman limit. A prominent edge is produced if the gas dominating the emission in the Lyman continuum region of the spectrum is sufficiently cold (T < 20,000 K) to contain significant neutral hydrogen. Circumbinary disks may be in this regime if the binary torques open a central cavity in the disk and clear most of the hot gas from the inner region, and if any residual UV emission from the individual BHs is either dim or intermittent. We model the vertical structure and spectra of circumbinary disks using the radiative transfer code TLUSTY, and identify the range of BH masses and binary separations producing a Lyman edge. We find that compact supermassive binaries with orbital periods of ~0.1 - 10 yr, whose gravitational waves (GWs) are expected to be detectable by pulsar timing arrays (PTAs), could have prominent Lyman edges. Such strong spectral edge features are not typically present in AGN spectra and could serve as corroborating evidence for the presence of a SMBHB.
description: Published in MNRASL. 6 pages. 4 figures
Combined Data and Deep Learning Model Uncertainties: An Application to the Measurement of Solid Fuel Regression Rate
Creators: name: Georgalis, Georgios
name: Retfalvi, Kolos
name: DesJardin, Paul E.
name: Patra, Abani
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In complex physical process characterization, such as the measurement of the regression rate for solid hybrid rocket fuels, where both the observation data and the model used have uncertainties originating from multiple sources, combining these in a systematic way for quantities of interest(QoI) remains a challenge. In this paper, we present a forward propagation uncertainty quantification (UQ) process to produce a probabilistic distribution for the observed regression rate $\dot{r}$. We characterized two input data uncertainty sources from the experiment (the distortion from the camera $U_c$ and the non-zero angle fuel placement $U_γ$), the prediction and model form uncertainty from the deep neural network ($U_m$), as well as the variability from the manually segmented images used for training it ($U_s$). We conducted seven case studies on combinations of these uncertainty sources with the model form uncertainty. The main contribution of this paper is the investigation and inclusion of the experimental image data uncertainties involved, and how to include them in a workflow when the QoI is the result of multiple sequential processes.
The price of anarchy is maximized at the percolation threshold
Creators: name: Skinner, Brian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: When many independent users try to route traffic through a network, the flow can easily become suboptimal as a consequence of congestion of the most efficient paths. The degree of this suboptimality is quantified by the so-called "price of anarchy" (POA), but so far there are no general rules for when to expect a large POA in a random network. Here I address this question by introducing a simple model of flow through a network with randomly-placed "congestible" and "incongestible" links. I show that the POA is maximized precisely when the fraction of congestible links matches the percolation threshold of the lattice. Both the POA and the total cost demonstrate critical scaling near the percolation threshold.
description: 6+2 pages, 8+2 figures; additional figures and improved scaling analysis added
Separation of a serum-derived tumoricidal factor from a helper factor for plaque-forming cells
Creators: name: Männel, Daniela N.
name: Farrar, J. J.
name: Mergenhagen, S. E.
Publisher: name: Universität Regensburg
Year: 1980
Subjects: subject: 610 Medizin
subject: Animals
subject: Antibody-Producing Cells/immunology
subject: Chemical Precipitation
subject: Chromatography, Gel
subject: Cytotoxicity, Immunologic
subject: Female
subject: L Cells (Cell Line)/immunology
subject: Lipopolysaccharides/pharmacology
subject: Lymphocyte Activation
subject: Male
subject: Mice
subject: Mice, Inbred C3H
subject: Mice, Nude
subject: Molecular Weight
subject: Mycobacterium bovis/immunology
subject: T-Lymphocytes/immunology

description: C3H/HeN mice administered BCG followed by lipopolysaccharide 14 days later released into their serum a cytotoxic factor for tumor cells and a factor that restored the anti-SRBC plaque-forming cell response of nude mouse spleen cells (helper activity). Gel filtration of serum containing the cytotoxic and the helper activities indicated that both factors exhibited an apparent m.w. of 125,000 to 150,000. The helper activity was also found at lower m.w. (60,000 and 13,000) suggesting the possibility that this factor existed in aggregated forms. Gel filtration of ammonium sulfate (40 to 60% saturation) precipitated serum in a high ionic strength buffer (1.6 M NaCl) resulted in shifts in the apparent m.w. of both factors. The cytotoxic factor now exhibited a m.w. of 55,000. The helper activity eluted with an apparent m.w. of 13,000, and thus was clearly separated from the cytotoxic factor. The helper activity was further shown to co-elute with macrophage-derived lymphocyte activating factor (LAF). This as well as other data represent the first demonstration of in vivo produced LAF.
Calculating the mass spectrum of primordial black holes
Creators: name: Young, Sam
name: Byrnes, Christian T.
name: Sasaki, Misao
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We reinspect the calculation for the mass fraction of primordial black holes (PBHs) which are formed from primordial perturbations, finding that performing the calculation using the comoving curvature perturbation $\mathcal{R}_{c}$ in the standard way vastly overestimates the number of PBHs, by many orders of magnitude. This is because PBHs form shortly after horizon entry, meaning modes significantly larger than the PBH are unobservable and should not affect whether a PBH forms or not - this important effect is not taken into account by smoothing the distribution in the standard fashion. We discuss alternative methods and argue that the density contrast, $Δ$, should be used instead as super-horizon modes are damped by a factor $k^{2}$. We make a comparison between using a Press-Schechter approach and peaks theory, finding that the two are in close agreement in the region of interest. We also investigate the effect of varying the spectral index, and the running of the spectral index, on the abundance of primordial black holes.
description: 16 pages, 7 figures. Version 2: updated to match published version and include journal reference. Version 3 and 4: minor corrections, conclusions unchanged
Paleoenvironment study of a syn-rift stratigraphic unit in the northern Pattani Basin, Gulf of Thailand.
Creators: name: Punsa Sangtakan
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2014
Subjects: Paleoenvironment, source rock, syn-rift stratigraphy, Pattani Basin

description: Bulletin of Earth Sciences of Thailand (BEST), 7, 2-Jan, 160-170
Inflation After False Vacuum Decay: New Evidence from BICEP2
Creators: name: Bousso, Raphael
name: Harlow, Daniel
name: Senatore, Leonardo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Last year we argued that if slow-roll inflation followed the decay of a false vacuum in a large landscape, the steepening of the scalar potential between the inflationary plateau and the barrier generically leads to a potentially observable suppression of the scalar power spectrum at large distances. Here we revisit this analysis in light of the recent BICEP2 results. Assuming that both the BICEP2 B-mode signal and the Planck analysis of temperature fluctuations hold up, we find that the data now discriminate more sharply between our scenario and $Λ$CDM. Nonzero tensor modes exclude standard $Λ$CDM with notable but not yet conclusive confidence: at $\sim 3.8\,σ$ if $r\approx0.2$, or at $\sim 3.5\,σ$ if $r=0.15$. Of the two steepening models of our previous work, one is now ruled out by existing bounds on spatial curvature. The other entirely reconciles the tension between BICEP2 and Planck. Upcoming $EE$ polarization measurements have the potential to rule out unmodified $Λ$CDM decisively. Next generation Large Scale Structure surveys can further increase the significance. More precise measurements of $BB$ at low $\ell$ will help distinguish our scenario from other explanations. If steepening is confirmed, the prospects for detecting open curvature increase but need not be large.
description: 16 pages, 4 figures. v2: journal version, minor corrections
Nonreciprocal collective magnetostatic wave modes in geometrically asymmetric bilayer structure with nonmagnetic spacer
Creators: name: Gerevenkov, P. I.
name: Bessonov, V. D.
name: Teplov, V. S.
name: Telegin, A. V.
name: Kalashnikova, A. M.
name: Khokhlov, N. E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nonreciprocity, i.e. inequivalence in amplitudes and frequencies of spin waves propagating in opposite directions, is a key property underlying functionality in prospective magnonic devices. Here we demonstrate experimentally and theoretically a simple approach to induce frequency nonreciprocity in a magnetostatically coupled ferromagnetic bilayer structure with a nonmagnetic spacer by its geometrical asymmetry. Using Brillouin light scattering, we show the formation of two collective spin wave modes in Fe$_{81}$Ga$_{19}$/Cu/Fe$_{81}$Ga$_{19}$ structure with different thicknesses of ferromagnetic layers. Experimental reconstruction and theoretical modeling of the dispersions of acoustic and optical collective spin wave modes reveal that both possess nonreciprocity reaching several percent at the wavenumber of $22~\cdot~10^4$ rad cm$^{-1}$. The analysis demonstrates that the shift of the amplitudes of counter-propagating coupled modes towards either of the layers is responsible for the nonreciprocity because of the pronounced dependence of spin wave frequency on the layers thickness. The proposed approach enables the design of multilayered ferromagnetic structures with a given spin wave dispersion for magnonic logic gates.
description: 6 pages, 3 figures, 1 supplementary materials file
title: Analysis and Optimization of Single-Pad and Multi-Pad Air Foil Thrust Bearings
Creators: name: Eickhoff, Markus
Publisher: name: UNSPECIFIED
Year: 2024

description: Air foil bearings are a type of compliant hydrodynamic bearing that feature a reliable, low-maintenance, and ecological machine element for high-speed turbomachinery. Due to the utilization of surrounding air or other gases as a lubricant, they can be used in oil-free machines. When compared against rigid air bearings, they present a low-cost and robust alternative. The analysis and optimization of air foil thrust bearings is challenging owing to the multiphysicality of thermodynamic, elastomechanic and hydrodynamic equations that have to be considered as well as their coupling in detailed numerical models. In this thesis, bump foil thrust bearings, consisting of a base plate, corrugated bump foils and smooth top foils are examined. They can be categorized in two different design types: firstly, a multi-foil design consisting of several independent bearing pads, and secondly, a single-foil design comprising several independent bump foils, but a single, annular top foil. The differences in the modeling approaches are illustrated. It is concluded that single-foil bearing analysis is only possible when the real foil geometry and top foil coating wear are included in the analysis. Furthermore, a full bearing model accounting for each individual pad of the multi-foil design in the case of misalignment is compared against a reduced approach using symmetry conditions. The thermal management of foil thrust bearings turns out to be one of the prime tasks for the optimization of load capacity and losses. The thermal bending of the runner disk that is caused by axial temperature gradients is shown to have a significant effect on bearing performance. The most prominent solution is the application of a forced cooling flow underneath the top foil. However, this reduces overall machine efficiency. Apart from this straightforward method, choosing an alternative foil material with a high thermal conductivity and compensating mechanisms based on centrifugal effects are presented here.
Analyzing complex networks through correlations in centrality measurements
Creators: name: Ronqui, José Ricardo Furlan
name: Travieso, Gonzalo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Many real world systems can be expressed as complex networks of interconnected nodes. It is frequently important to be able to quantify the relative importance of the various nodes in the network, a task accomplished by defining some centrality measures, with different centrality definitions stressing different aspects of the network. It is interesting to know to what extent these different centrality definitions are related for different networks. In this work, we study the correlation between pairs of a set of centrality measures for different real world networks and two network models. We show that the centralities are in general correlated, but with stronger correlations for network models than for real networks. We also show that the strength of the correlation of each pair of centralities varies from network to network. Taking this fact into account, we propose the use of a centrality correlation profile, consisting of the values of the correlation coefficients between all pairs of centralities of interest, as a way to characterize networks. Using the yeast protein interaction network as an example we show also that the centrality correlation profile can be used to assess the adequacy of a network model as a representation of a given real network.
description: 9 pages, 1 table, 6 figures
Spectral Unmixing via Data-guided Sparsity
Creators: name: Zhu, Feiyun
name: Wang, Ying
name: Fan, Bin
name: Meng, Gaofeng
name: Xiang, Shiming
name: Pan, Chunhong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Hyperspectral unmixing, the process of estimating a common set of spectral bases and their corresponding composite percentages at each pixel, is an important task for hyperspectral analysis, visualization and understanding. From an unsupervised learning perspective, this problem is very challenging---both the spectral bases and their composite percentages are unknown, making the solution space too large. To reduce the solution space, many approaches have been proposed by exploiting various priors. In practice, these priors would easily lead to some unsuitable solution. This is because they are achieved by applying an identical strength of constraints to all the factors, which does not hold in practice. To overcome this limitation, we propose a novel sparsity based method by learning a data-guided map to describe the individual mixed level of each pixel. Through this data-guided map, the $\ell_{p}(0
SUPPLEMENTARY MATERIAL from Interpreting mismatches between linguistic and genetic patterns among speakers of Tanimuka (Eastern Tukanoan) and Yukuna (Arawakan)
Creators: name: Arias, Leonardo
name: Emlen, Nicholas Q.
name: Norder, Sietze
name: Julmi, Nora
name: Lemus Serrano, Magdalena
name: Chacon, Thiago
name: Wiegertjes, Jurriaan
name: Howard, Austin
name: Azevedo, Matheus C. B. C.
name: Caine, Allison
name: Dunn, Saskia
name: Stoneking, Mark
name: Van Gijn, Rik
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Environmental Science
subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: 60199 Biochemistry and Cell Biology not elsewhere classified
subject: 69999 Biological Sciences not elsewhere classified

description: Northwestern Amazonia is home to a great degree of linguistic diversity, and the human societies in that region are part of complex networks of interaction that predate the arrival of Europeans. This study investigates the population and language contact dynamics between two languages found within this region, Yukuna and Tanimuka, which belong to the Arawakan and Tukanoan language families, respectively. We use evidence from linguistics, ethnohistory, ethnography and population genetics to provide new insights about the contact dynamics between these and other human groups in NWA. Our results show that the interaction between these groups intensified in the last 500 years, to the point that it is difficult to differentiate between them genetically. However, this close interaction has led to more substantial contact-induced language changes in Tanimuka than in Yukuna, consistent with a scenario of language shift and asymmetrical power relations.
On retrieval theory
Creators: name: Robertson, Stephen
Publisher: name: Zenodo
Year: 2011
Subjects: subject: Information Retrieval
subject: Vickery, Brian
subject: https://iskouk.org/subjects/PRUIHEDJ
subject: https://iskouk.org/subjects/OXW5VV3R

description: This paper re-reviews Vickery’s book On retrieval system theory, first published 50 years ago,
 and discusses the changing nature of theoretical work on information retrieval and the possibility of developing a general theory of IR. Stephen Robertson writes:
 ‘What kinds of theory or theories do we need for the field of information retrieval?’
 Brian Vickery’s book whose title I have purloined was first published in 1961; in the preface he makes the following disclaimer: ‘There is as yet no unified theory of retrieval systems’. I have made the same statement many times myself, and it is as true now as it was a half-century ago. The number of papers published in the field of information retrieval, in every year of the first decade of the third millennium, would astonish the Brian Vickery of 1961, and many of these papers appeal to theoretical arguments of various more-or-less formal kinds. But can we expect, and do we need or want, a unified theory? In this talk I will attempt some discussion of these issues.
Moments of Parton Distributions Functions from Lattice QCD at the Physical Point
Creators: name: Rodekamp, Marcel
name: Engelhardt, Michael
name: Green, Jeremy R.
name: Krieg, Stefan
name: Meinel, Stefan
name: Negele, John W.
name: Pochinsky, Andrew
name: Syritsyn, Sergey
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: parton, distribution function
pi, mass
nucleon, momentum
lattice field theory
excited state
lattice
axial

description: We present a Lattice QCD calculation of the second Mellin moments of the nucleon axial, vector and tensor parton distribution functions (PDFs). The calculation is performed at the physical pion mass with two different lattice spacings, and includes both zero and non-zero nucleon momenta. In our preliminary analysis, we identify operators that greatly reduce excited-state contamination.
The Study of the Deepwater Clastic Depositional Systems and Reservoir Distribution in East Andaman Basin, Thailand
Creators: name: Supakit Kanchan
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2014
Subjects: East Andaman Basin, turbidites, deepwater depositional processes

description: Bulletin of Earth Sciences of Thailand (BEST), 7, 2-Jan, 171-177
Phytochemical, spectroscopic analysis and antifungal activity on bell peppers of hydrothermal bioactive metabolites of Humulus lupulus L. extracts
Creators: name: Basilio-Cortes, Ulin Antobelli
name: Ramírez-Rodrigues, Milena M.
name: Ramírez-Rodrigues, Melissa A.
name: González-Mendoza, Daniel
name: Tzintzun-Camacho, Olivia
name: Durán-Hernández, Dagoberto
name: González-Salitre, Lourdes
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Plant Biology

description: This study aimed to evaluate the impact of temperature on the potential extraction of bioactive compounds from aqueous hop extract samples. The main bioactive components were characterised and analysed by LC-MS/MS, FT-IR, phenolic compounds and total flavonoids. Antifungal activity was evaluated in vitro and in vivo in bell peppers. LC-MS/MS analysis demonstrated increases and decreases of bioactive compounds in both extracts depending on the extraction temperature of 25 or 65 °C. The bioactive compounds showed significant changes in the bands between 2786 to 3600 cm−1 and 1022 to 1729 cm−1 in the FT-IR spectrum. The highest antifungal activity against the microorganisms was observed in the EkuanotMT extract at an extraction temperature of 65 °C. The in vivo test with bell peppers presented antifungal activity during five days of evaluation under normal environmental conditions without refrigeration, presenting ≤ 52% of the disease due to F. oxysporum and A. solani.