cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring New Frontiers: High-Frequency VLBI Prospects
Creators: name: Ros, Eduardo
Publisher: name: Zenodo
Year: 2023

description: High-frequency VLBI is demonstrating its power with recent achievements such as imaging the shadow of black holes and the inner jet regions in active galactic nuclei. Ongoing developments in digital back-ends, calibration techniques and imaging methods, combined with the implementation of multi-band options, are dramatically extending the capabilities of VLBI at millimetre wavelengths. This will allow us to study fainter sources such as transients, radio quiet galaxies and galactic objects, to obtain previously inaccessible astrometric information, and to measure opacity and polarised emission in the collimation and acceleration regions of extragalactic jets to probe the strength and orientation of magnetic fields near the event horizon of the powering supermassive black hole. I will review current developments in high-frequency VLBI and present the prospects for the new science that will be possible with improved sensitivity, image fidelity, polarisation and astrometric capabilities. I will discuss synergies with multi-messenger astronomy, such as for very high energy gamma rays and neutrino associations, and show how mm-VLBI also paves the way for the high-resolution capabilities of the coming connected interferometers that will shape radio astronomy in the next decades.
VLBA Technical Developments
Creators: name: Brisken, Walter
Publisher: name: Zenodo
Year: 2023

description: The VLBA has been in operation for 3 decades. Over this time, it has seen several important upgrades that increase its sensitivity and capability. In this talk I will discuss some ongoing efforts to continue this trend of improvements. These include a new digital back-end system, transition to electronic transfer of data, including real-time correlation, and improved timing. Some desired, but currently unfunded, projects will also be discussed.
Heat transport in low dimensions: introduction and phenomenology
Creators: name: Lepri, Stefano
name: Livi, Roberto
name: Politi, Antonio
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this chapter we introduce some of the basic models and concepts that will be discussed throughout the volume. In particular we describe systems of nonlinear oscillators arranged on low-dimensional lattices and summarize the phenomenology of their transport properties.
description: Review paper, to appear in the Springer Lecture Notes in Physics volume "Thermal transport in low dimensions: from statistical physics to nanoscale heat transfer" (S. Lepri ed.)
Type 1 Diabetes: A Chronic Anti-Self-Inflammatory Response
Creators: name: Clark, Matthew
name: Kroger, Charles J.
name: Tisch, Roland M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Inflammation is typically induced in response to a microbial infection. The release of proinflammatory cytokines enhances the stimulatory capacity of antigen-presenting cells, as well as recruits adaptive and innate immune effectors to the site of infection. Once the microbe is cleared, inflammation is resolved by various mechanisms to avoid unnecessary tissue damage. Autoimmunity arises when aberrant immune responses target self-tissues causing inflammation. In type 1 diabetes (T1D), T cells attack the insulin producing β cells in the pancreatic islets. Genetic and environmental factors increase T1D risk by in part altering central and peripheral tolerance inducing events. This results in the development and expansion of β cell-specific effector T cells (Teff) which mediate islet inflammation. Unlike protective immunity where inflammation is terminated, autoimmunity is sustained by chronic inflammation. In this review, we will highlight the key events which initiate and sustain T cell-driven pancreatic islet inflammation in nonobese diabetic mice and in human T1D. Specifically, we will discuss: (i) dysregulation of thymic selection events, (ii) the role of intrinsic and extrinsic factors that enhance the expansion and pathogenicity of Teff, (iii) defects which impair homeostasis and suppressor activity of FoxP3-expressing regulatory T cells, and (iv) properties of β cells which contribute to islet inflammation.
Wedge operations and a new family of projective toric manifolds
Creators: name: Choi, Suyoung
name: Park, Hanchul
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 14M25, 57S25, 52B11, 52B35, 14J10

description: Let $P_m(J)$ denote a simplicial complex obtainable from consecutive wedge operations from an $m$-gon. In this paper, we completely classify toric manifolds over $P_m(J)$ and prove that all of them are projective. As a consequence, we provide an infinite family of projective toric manifolds.
description: 16 pages, 4 figures
Control of Intestinal Inflammation, Colitis-Associated Tumorigenesis, and Macrophage Polarization by Fibrinogen-Like Protein 2
Creators: name: Zhu, Bo
name: Shu, Chi
name: Zhu, Ying
name: Feng, Yi
name: Yang, Fei
name: Wan, Yisong Y.
name: Li, Qi-Jing
name: Zhang, Longhui
name: Zha, Haoran
name: Guo, Bo
name: Han, Xiao
name: Wang, Xinxin
name: Chen, Liying
name: Zhou, Jie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Fibrinogen-like protein 2 (Fgl2) is critical for immune regulation in the inflammatory state. Elevated Fgl2 levels are observed in patients with inflammatory bowel disease (IBD), but little is known about its functional significance. In this study, we sought to investigate the role of Fgl2 in the development of intestinal inflammation and colitis-associated colorectal cancer (CAC). Here, we report that Fgl2 deficiency increased susceptibility to dextran sodium sulfate-induced colitis and CAC in a mouse model. During colitis development, the expression of the membrane-bound and secreted forms of Fgl2 (mFgl2 and sFgl2, respectively) in the colon were increased and predominantly expressed by colonic macrophages. In addition, using bone marrow chimeric mice, we determined that Fgl2 function in colitis is strictly related to its expression in the hematopoietic cells. Loss of Fgl2 induced the polarization of M1, but suppressed that of M2 both in vivo and in vitro, independent of intestinal inflammation. Thus, Fgl2 suppresses intestinal inflammation and CAC development through its role in macrophage polarization and may serve as a therapeutic target in inflammatory diseases, including IBD.
title: Iowa Byington Reed diary 06, May 12, 1879-December 31, 1879
Creators: name: Reed, Iowa Byington
Publisher: name: University of Iowa. Libraries
Year: 2012
Subjects: subject: FOS: History and archaeology
valueUri: http://www.oecd.org/science/inno/38235147.pdf
subject: FOS: History and archaeology
subject: Domestic life
valueUri: http://id.loc.gov/vocabulary/graphicMaterials/tgm003216

description: Iowa Byington Reed's diaries contain daily entries covering her life from age twenty to just a few weeks before her death at age eighty-four (1872-1936).
Brunia pentandra Class. - Bockh. & E. G. H. Oliv.
Creators: name: Claßen-Bockhoff, Regine
name: Oliver, Edward G. H.
name: Hall, Anthony V.
name: Quint, Marcus
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Bruniales
Bruniaceae
Brunia
Brunia pentandra

description: Brunia pentandra (Thunb.) Class.-Bockh. & E.G.H. Oliv., comb. nov. ≡ Passerina pentandra Thunb., Prodr. Pl. Cap.: 76. 1794 ≡ Lonchostoma pentandrum (Thunb.) Druce in Rep. Bot. Soc. Exch. Club Brit. Isles suppl. 2: 633. 1917; PillansinJ. S. African Bot. 13: 135. 1947; Powrie in J. S. African Bot. 35: 338. 1969 ≡ Lonchostoma obtusiflorum Wikstr. in Kongl. Vetensk. Acad. Handl. 39: 352. 1818 nom. illeg. & superfl. (ICBN Art. 52.1) – Type: e. Cap. bon. spei, sinecoll. [=? Thunberg] (UPS-sheet 6339, holo – microfiche!; S-G- 8322, iso).
description: Published as part of Claßen-Bockhoff, Regine, Oliver, Edward G. H., Hall, Anthony V. & Quint, Marcus, 2019, A new classification of the South African endemic family Bruniaceae based on molecular and morphological data, pp. 1138-1155 in TAXON 60 (4) on page 1152, DOI: 10.1002/tax.604016, http://zenodo.org/record/7590433
Brunia dregeana Class. - Bockh. & E. G. H. Oliv.
Creators: name: Claßen-Bockhoff, Regine
name: Oliver, Edward G. H.
name: Hall, Anthony V.
name: Quint, Marcus
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Bruniales
Bruniaceae
Brunia
Brunia dregeana

description: Brunia dregeana (Sond.) Class.-Bockh. & E.G.H. Oliv., comb. nov. ≡ Berardia dregeana Sond. in Harvey & Sonder, Fl. Cap. 2: 321. 1862 ≡ Raspalia dregeana (Sond.) Nied. in Engler & Prantl, Nat. Pflanzenfam. 2a: 135. 1891; Pillans in J. S. African Bot. 13: 160. 1947 – Lectotype (designated here by Oliver): Drège s.n. (S06-13288 [ex herb. Sond.], lecto; K-75854!, MEL-27720 [ex herb. Sond.], HBG- 503106, PRE-12089, SAM-15797!, S-G-8320, S08-7156, isolecto). This species was included in the DNA analysis but came out unresolved in its position on the cladogram (see Fig. 1); morphologically it shares characterswith B. subg. Brunia, subg. Pseudobaeckea, and subg. Mniothamnea (Quint 2004).
description: Published as part of Claßen-Bockhoff, Regine, Oliver, Edward G. H., Hall, Anthony V. & Quint, Marcus, 2019, A new classification of the South African endemic family Bruniaceae based on molecular and morphological data, pp. 1138-1155 in TAXON 60 (4) on page 1152, DOI: 10.1002/tax.604016, http://zenodo.org/record/7590433
description: {"references": ["Quint, M. 2004. Evolution of Bruniaceae: Evidence from molecular and morphological studies. Dissertation, University of Mainz, Mainz, Germany. Gottingen: Cuvillier."]}
Radiative plateau inflation
Creators: name: Ballesteros, Guillermo
name: Tamarit, Carlos
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe how monomial chaotic inflation becomes compatible with the latest CMB data thanks to radiative corrections producing a plateau. The interactions of the inflation with other fields, required for reheating, can flatten the potential and moderate the production of primordial gravitational waves, keeping these below the current upper bound. We show that the appearance of a plateau requires that the inflaton couples to fermions and to another scalar or a gauge group. We give concrete examples of minimal particle physics models leading to plateaus for quadratic and quartic chaotic inflation. We also provide a three-parameter model-independent description of radiatively corrected inflation that is amenable to CMB analyses.
description: JHEP version
Article Review: The Culture Industry, New Media, And The Shift From Creation To Curation; Or, Enlightenment As A Kick In The Nuts’
Creators: name: Jelahut, Felisianus Efrem
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Media And Communication
subject: Culture Industry
subject: Communication

description: Article Review: The Culture Industry, New Media, And The Shift From Creation To Curation; Or, Enlightenment As A Kick In The Nuts’
Inventory and validation of quality control procedures for the extraction of nucleic acids for real-time PCR used for the diagnosis of pests (IVENAD)
Creators: name: Schumpp, Olivier
name: De Jonghe, Kris
Publisher: name: Zenodo
Year: 2023
Subjects: Euphresco, plant health, diagnostics, test performance study, quality control, real-time PCR

description: Slide of Euphresco project 2021-A-378 'Inventory and validation of quality control procedures for the extraction of nucleic acids for real-time PCR used for the diagnosis of pests (IVENAD)'
description: Project funded through the Euphresco network
Extensions of groups by weighted Steiner loops
Creators: name: Figula, Ágota
name: Strambach, Karl
Publisher: name: arXiv
Year: 2015
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20N05, 51E10, 20D99

description: Solving functional equations given in \cite{nagy} for extensions of a group $A$ by a weighted Steiner loop $S$ we obtain concrete description for all loops with interesting weak associativity properties if the Steiner loop $S$ induces only the trivial automorphism on $A$. We show that the restricted Fischer groups and their geometry play an important role for loop extension with right alternative property. Also the automorphism groups of these extensions as well as the conditions for isomorphisms between two extensions are studied.
Phenomenological investigation of a quantum gravity extension of inflation with the Starobinsky potential
Creators: name: Bonga, Béatrice
name: Gupt, Brajesh
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the pre-inflationary dynamics of inflation with the Starobinsky potential, favored by recent data from the Planck mission, using techniques developed to study cosmological perturbations on quantum spacetimes in the framework of loop quantum cosmology. We find that for a large part of the initial data, inflation compatible with observations occurs. There exists a subset of this initial data that leads to quantum gravity signatures that are potentially observable. Interestingly, despite the different inflationary dynamics, these quantum gravity corrections to the powerspectra are similar to those obtained for inflation with a quadratic potential, including suppression of power at large scales. Furthermore, for super horizon modes the tensor modes show deviations from the standard inflationary paradigm that are unique to the Starobinsky potential and could be important for non-Gaussian modulation and tensor fossils.
description: 31 pages, 11 figures; updated to match the published version in PRD
Origin of Second Harmonic Generation from individual Silicon Nanowires
Creators: name: Wiecha, Peter R.
name: Arbouet, Arnaud
name: Girard, Christian
name: Baron, Thierry
name: Paillard, Vincent
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate Second Harmonic Generation from individual silicon nanowires and study the influence of resonant optical modes on the far-field nonlinear emission. We find that the polarization of the Second Harmonic has a size-dependent behavior and explain this phenomenon by a combination of different surface and bulk nonlinear susceptibility contributions. We show that the Second Harmonic Generation has an entirely different origin, depending on whether the incident illumination is polarized parallel or perpendicularly to the nanowire axis. The results open perspectives for further geometry-based studies on the origin of Second Harmonic Generation in nanostructures of high-index centrosymmetric semiconductors.
description: 7 Pages, 4 Figures + 3 Pages, 6 Figures in Appendix
The grammatical characterization of developmental dysphasia
Creators: name: Clahsen, Harald
Publisher: name: Technische Universität Berlin
Year: 1989
Subjects: subject: 400 Sprache
subject: child
subject: language aquisition
subject: dysphasia

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
description: This paper deals with child-language-acquisition disorders in the area of grammar, and it presents some of the results from our research study on developmental dysphasia in German children. An attempt is made to characterize dysphasia in terms of a selective deficit of an otherwise normal linguistic system. It is argued that dysphasic children have problems in establishing agreement relations in grammar. As is shown for various grammatical phenomena, such as word order, inflectional morphology, word classes, and types of constituents, this condition accounts for the structures which are blocked in dysphasia as well as for those which are still accessible to the children.
title: Iowa Byington Reed diary 07, January 1, 1880-December 31, 1880
Creators: name: Reed, Iowa Byington
Publisher: name: University of Iowa. Libraries
Year: 2012
Subjects: subject: FOS: History and archaeology
valueUri: http://www.oecd.org/science/inno/38235147.pdf
subject: FOS: History and archaeology
subject: Domestic life
valueUri: http://id.loc.gov/vocabulary/graphicMaterials/tgm003216

description: Iowa Byington Reed's diaries contain daily entries covering her life from age twenty to just a few weeks before her death at age eighty-four (1872-1936).
The Pulsating Pulsar Magnetosphere
Creators: name: Tsui, K. H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Following the basic principles of a charge separated pulsar magnetosphere \citep{goldreich1969}, we consider the magnetosphere be stationary in space, instead of corotating, and the electric field be uploaded from the potential distribution on the pulsar surface, set up by the unipolar induction. Consequently, the plasma of the magnetosphere undergoes guiding center drifts of the gyro motion due to the transverse forces to the magnetic field. These forces are the electric force, magnetic gradient force, and field line curvature force. Since these plasma velocities are of drift nature, there is no need to introduce an emf along the field lines, which would contradict the $E_{\parallel}=\vec E\cdot\vec B=0$ plasma condition. Furthermore, there is also no need to introduce the critical field line separating the electron and ion open field lines. We present a self-consistent description where the magnetosphere is described in terms of electric and magnetic fields and also in terms of plasma velocities. The fields and velocities are then connected through the space charge densities self-consistently. We solve the pulsar equation analytically for the fields and construct the standard steady state pulsar magnetosphere. By considering the unipolar induction inside the pulsar and the magnetosphere outside the pulsar as one coupled system, and under the condition that the unipolar pumping rate exceeds the Poynting flux in the open field lines, plasma pressure can build up in the magnetosphere, in particular in the closed region. This could cause a periodic openning up of the closed region, leading to a pulsating magnetosphere, which could be an alternative for pulsar beacons. The closed region can also be openned periodically by the build-up of toroidal magnetic field through a positive feedback cycle.
[Rezension zu:] Doris Sittig, Vyl wonders machet minne. Das deutsche Liebeslied in der ersten Hälfte des 15. Jahrhunderts. Versuch einer Typologie.
Creators: name: Schmitz, Silvia
Publisher: name: Technische Universität Berlin
Year: 1988
Subjects: subject: 800 Literatur und Rhetorik
subject: 830 Literaturen germanischer Sprachen; Deutsche Literatur

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
description: Doris Sittig verfolgt mit ihrer Würzburger Dissertation ein für die Erforschung der spätmittelalterlichen Liebeslyrik wichtiges Ziel: Eine Typologie der weitgehend anonymen „Liederbuch"Lieder kann für die sich ab 1400 manifestierenden Eigentümlichkeiten der Gattung Verständnisgrundlage sein.
Aligning the Measurement of Microbial Diversity with Macroecological Theory
Creators: name: Hurlbert, Allen H.
name: Bond-Lamberty, Ben
name: Fansler, Sarah J.
name: Chu, Rosalie K.
name: Chen, Xingyuan
name: Tfaily, Malak
name: Anderson, Carolyn G.
name: Hess, Nancy J.
name: Dini-Andreote, Francisco
name: Stegen, James C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The number of microbial operational taxonomic units (OTUs) within a community is akin to species richness within plant/animal (“macrobial”) systems. A large literature documents OTU richness patterns, drawing comparisons to macrobial theory. There is, however, an unrecognized fundamental disconnect between OTU richness and macrobial theory: OTU richness is commonly estimated on a per-individual basis, while macrobial richness is estimated per-area. Furthermore, the range or extent of sampled environmental conditions can strongly influence a study's outcomes and conclusions, but this is not commonly addressed when studying OTU richness. Here we (i) propose a new sampling approach that estimates OTU richness per-mass of soil, which results in strong support for species energy theory, (ii) use data reduction to show how support for niche conservatism emerges when sampling across a restricted range of environmental conditions, and (iii) show how additional insights into drivers of OTU richness can be generated by combining different sampling methods while simultaneously considering patterns that emerge by restricting the range of environmental conditions. We propose that a more rigorous connection between microbial ecology and macrobial theory can be facilitated by exploring how changes in OTU richness units and environmental extent influence outcomes of data analysis. While fundamental differences between microbial and macrobial systems persist (e.g., species concepts), we suggest that closer attention to units and scale provide tangible and immediate improvements to our understanding of the processes governing OTU richness and how those processes relate to drivers of macrobial species richness.
title: Iowa Byington Reed diary 08, January 1, 1881-December 31, 1881
Creators: name: Reed, Iowa Byington
Publisher: name: University of Iowa. Libraries
Year: 2012
Subjects: subject: FOS: History and archaeology
valueUri: http://www.oecd.org/science/inno/38235147.pdf
subject: FOS: History and archaeology
subject: Domestic life
valueUri: http://id.loc.gov/vocabulary/graphicMaterials/tgm003216

description: Iowa Byington Reed's diaries contain daily entries covering her life from age twenty to just a few weeks before her death at age eighty-four (1872-1936).
The Experience of Work Stress in Newly Qualified Counselling Psychologists Working in Multi-Disciplinary Team Settings: An Interpretative Phenomenological Analysis
Creators: name: Warwick, Hannah
Publisher: name: University of East London
Year: 2022

description: This study explores the experiences of work stress in newly qualified (NQ) counselling psychologists (CoP) working in multi-disciplinary teams (MDT). Eight semi-structured interviews were conducted, and the transcripts analysed using interpretative phenomenological analysis from a constructivist epistemological position. The analysis highlighted four main themes as important to NQ CoPs’ experiences of work stress in MDTs: (1) Stress in transition: The qualified role as a baptism of fire, (2) Stress in navigating MDT dynamics, (3) Necessities and tensions in support networks, and (4) Managing stress in the qualified space: ‘You just have to get on with it’. Each theme highlighted elements of participants’ experiences of work stress within the CoP journey, such as feeling that there were greater work-related demands on qualifying, in the context of fewer internal and external resources. The transition left some feeling deskilled, unprepared, and pressured to adapt and ‘catch up’. This was all whilst navigating difference and power in the MDT, and the emotional demands of the CoP role. Participants sought to feel part of the MDT ingroup yet stay true to their CoP values, which sometimes meant risking becoming professionally isolated by presenting alternative views to the predominant medical model. Additionally, participants seemingly experienced tensions regarding the use of support networks for managing stress due to the ethical limitations and emotional demands of client work. Moreover, seeking to avoid being consumed by work, and feeling pressure to represent the CoP community and ‘get on with it’, it seemed necessary on qualifying for participants to take responsibility for managing their work stress. Recommendations seek to help NQ CoPs and those within the CoP field think how best to prepare for, evaluate, cope with, and adapt to qualification and MDT working so the potential for burnout, in an already emotionally demanding role, can be reduced.
Thermal transport in nanocrystalline graphene investigated by approach-to-equilibrium molecular dynamics simulations
Creators: name: Hahn, Konstanze R.
name: Melis, Claudio
name: Colombo, Luciano
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Approach-to-equilibrium molecular dynamics simulations have been used to study thermal transport in nanocrystalline graphene sheets. Nanostructured graphene has been created using an iterative process for grain growth from initial seeds with random crystallographic orientations. The resulting cells have been characterized by the grain size distribution based on the radius of gyration, by the number of atoms in each grain and by the number of atoms in the grain boundary. Introduction of nanograins with a radius of gyration of 1 nm has led to a significant reduction in the thermal conductivity to 3% of the value in single crystalline graphene. Analysis of the vibrational density of states has revealed a general reduction of the vibrational intensities and broadening of the peaks when nanograins are introduced which can be attributed to phonon scattering in the boundary layer. The thermal conductivity has been evaluated as a function of the grain size with increasing size up to 14 nm and it has been shown to follow an inverse rational function. The grain size dependent thermal conductivity could be approximated well by a function where transport is described by a connection in series of conducting elements and resistances (at boundaries).
description: 9 pages, 9 figures
A parametrix for quantum gravity?
Creators: name: Esposito, Giampiero
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the sixties, DeWitt discovered that the advanced and retarded Green functions of the wave operator on metric perturbations in the de Donder gauge make it possible to define classical Poisson brackets on the space of functionals that are invariant under the action of the full diffeomorphism group of spacetime. He therefore tried to exploit this property to define invariant commutators for the quantized gravitational field, but the operator counterpart of such classical Poisson brackets turned out to be a hard task. On the other hand, the mathematical literature studies often an approximate inverse, the parametrix, which is, strictly, a distribution. We here suggest that such a construction might be exploited in canonical quantum gravity. We begin with the simplest case, i.e. fundamental solution and parametrix for the linear, scalar wave operator; the next step are tensor wave equations, again for linear theory, e.g. Maxwell theory in curved spacetime. Last, the nonlinear Einstein equations are studied, relying upon the well-established Choquet-Bruhat construction, according to which the fifth derivatives of solutions of a nonlinear hyperbolic system solve a linear hyperbolic system. The latter is solved by means of Kirchhoff-type formulas, while the former fifth-order equations can be solved by means of well-established parametrix techniques for elliptic operators. But then the metric components that solve the vacuum Einstein equations can be obtained by convolution of such a parametrix with Kirchhoff-type formulas. Some basic functional equations for the parametrix are also obtained, that help in studying classical and quantum version of the Jacobi identity.
description: 27 pages
Developmental Linguistics
Creators: name: Bailey, Charles-James N.
Publisher: name: Technische Universität Berlin
Year: 1981
Subjects: subject: 400 Sprache
subject: 390 Bräuche, Etikette, Folklore
subject: idiolect
subject: isolect
subject: minilect

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
description: For a decade or so, scattered groups of linguists, first in America and now even more so in Europe, have found that so far äs their own interests are concerned, there are insurmountable contradictions with the reigning view of the structuralists, transformationalists, etc., that the proper object of linguistic investigation is the idiolect. They have consequently looked in other directions for a more realistic approach. Among such scholars have been those whose goals require them to compare constructs, sounds, or meanings:sociolinguists,dialectologists,creolists,historical linguists, investigators of child language, foreign-language teachers, language-planners, therapists, and theoreticians of a sort to be discussed below. It is recreant to their goals to adopt models which were invented for idiolectal analysis, for these exclude comparative and temporal (developmental) analysis: Thus, the phoneme is defined äs a relational unit that is not comparable with a superficially similar unit in a different (relational) System, or idiolect.1 In what follows, minilect is used äs a theoretically neutral term for either the static idiolect or the comparative-developmental isolect (cf. BAILEY 1973).
Distinct Bacterial Communities in Surficial Seafloor Sediments Following the 2010 Deepwater Horizon Blowout
Creators: name: Speare, Kelly
name: McKay, Luke
name: Yang, Tingting
name: MacGregor, Barbara J.
name: Teske, Andreas
name: Joye, Samantha B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: A major fraction of the petroleum hydrocarbons discharged during the 2010 Macondo oil spill became associated with and sank to the seafloor as marine snow flocs. This sedimentation pulse induced the development of distinct bacterial communities. Between May 2010 and July 2011, full-length 16S rRNA gene clone libraries demonstrated bacterial community succession in oil-polluted sediment samples near the wellhead area. Libraries from early May 2010, before the sedimentation event, served as the baseline control. Freshly deposited oil-derived marine snow was collected on the surface of sediment cores in September 2010, and was characterized by abundantly detected members of the marine Roseobacter cluster within the Alphaproteobacteria. Samples collected in mid-October 2010 closest to the wellhead contained members of the sulfate-reducing, anaerobic bacterial families Desulfobacteraceae and Desulfobulbaceae within the Deltaproteobacteria, suggesting that the oil-derived sedimentation pulse triggered bacterial oxygen consumption and created patchy anaerobic microniches that favored sulfate-reducing bacteria. Phylotypes of the polycyclic aromatic hydrocarbon-degrading genus Cycloclasticus, previously found both in surface oil slicks and the deep hydrocarbon plume, were also found in oil-derived marine snow flocs sedimenting on the seafloor in September 2010, and in surficial sediments collected in October and November 2010, but not in any of the control samples. Due to the relative recalcitrance and stability of polycyclic aromatic compounds, Cycloclasticus represents the most persistent microbial marker of seafloor hydrocarbon deposition that we could identify in this dataset. The bacterial imprint of the DWH oil spill had diminished in late November 2010, when the bacterial communities in oil-impacted sediment samples collected near the Macondo wellhead began to resemble their pre-spill counterparts and spatial controls. Samples collected in summer of 2011 did not show a consistent bacterial community signature, suggesting that the bacterial community was no longer shaped by the DWH fallout of oil-derived marine snow, but instead by location-specific and seasonal factors.
Demographic change, migration and public pensions - a macroeconomic analysis
Creators: name: Bickmann, Marius
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Demographic change
subject: Migration
subject: Pensions
subject: Macroeconomics
subject: 330
subject: Internationale Migration
subject: Rückwanderung
subject: Rente
subject: Makroökonomie
subject: Bevölkerungsentwicklung

description: This thesis contains three self-contained papers contributing to the literature on demographic change, migration and public pensions. Chapter 2 introduces the basic framework for analyzing endogenous migration flows in an open economy model where countries exhibit differences in the generosity of public pension systems. Chapter 3 expands the model setting along several dimensions. First of all, I extend the model from chapter 2 to a three-country set-up, in which Germany as the host region receives immigration from Poland and Southern Europe. Furthermore, I introduce a complex demographic structure enabling an explicit analysis of the demographic transition. In contrast to related quantitative macroeconomic studies of population aging, the endogeneity of migration flows introduces a feedback mechanism between demographic and economic variables. In particular, migration responds to changes in relative wages and relative returns to the public pension systems caused by population aging. The migration flows arising in general equilibrium alter country-specific population dynamics as well as macroeconomic aggregates, factor prices and social security variables. Finally, chapter 4 shifts the focus from the interconnection between migration and population aging to the distributional implications of current labor movements. In the context of a two-country model I study the case of Polish-German migration. I highlight two main channels through which migration entails distributional effects. Firstly, labor movements change relative wages as long as they amend a country’s skill composition. Secondly, due to return migration, the savings behavior of migrants differs from that of non-migrants. Specifically, if income differences between sending and host region are significantly large and migrants expect to return to their home country with a positive probability, they accumulate high per capita savings to insure against a possible drop in income after returning. These higher assets of return migrants unambiguously increase the capital intensity in Poland (sending country). Whether Germany (host country) also benefits from the migrants’ savings behavior depends on the degree of cross-border investments.
Diagnosis and epidemiology of viruses infecting cereal crops (CEREVIR)
Creators: name: Sõmera, Merike
Publisher: name: Zenodo
Year: 2023
Subjects: Euphresco, plant health, diagnostics, epidemiology, surveillance, viruses, cereals

description: Slide of Euphresco project 2021-A-374 'Diagnosis and epidemiology of viruses infecting cereal crops (CEREVIR)'
description: Project funded through the Euphresco network
title: Iowa Byington Reed diary 09, January 1, 1882-December 31, 1882
Creators: name: Reed, Iowa Byington
Publisher: name: University of Iowa. Libraries
Year: 2012
Subjects: subject: FOS: History and archaeology
valueUri: http://www.oecd.org/science/inno/38235147.pdf
subject: FOS: History and archaeology
subject: Domestic life
valueUri: http://id.loc.gov/vocabulary/graphicMaterials/tgm003216

description: Iowa Byington Reed's diaries contain daily entries covering her life from age twenty to just a few weeks before her death at age eighty-four (1872-1936).
2d (0,2) Quiver Gauge Theories and D-Branes
Creators: name: Franco, Sebastian
name: Ghim, Dongwook
name: Lee, Sangmin
name: Seong, Rak-Kyeong
name: Yokoyama, Daisuke
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We initiate a systematic study of 2d (0,2) quiver gauge theories on the worldvolume of D1-branes probing singular toric Calabi-Yau 4-folds. We present an algorithm for efficiently calculating the classical mesonic moduli spaces of these theories, which correspond to the probed geometries. We also introduce a systematic procedure for constructing the gauge theories for arbitrary toric singularities by means of partial resolution, which translates to higgsing in the field theory. Finally, we introduce Brane Brick Models, a novel class of brane configurations that consist of D4-branes suspended from an NS5-brane wrapping a holomorphic surface, tessellating a 3-torus. Brane Brick Models are the 2d analogues of Brane Tilings and allow a direct connection between geometry and gauge theory.
description: 90 pages, 52 figures, 2 tables. v2: typos corrected
Ebola VP40 in Exosomes Can Cause Immune Cell Dysfunction
Creators: name: Sampey, Gavin C.
name: Nekhai, Sergei
name: Barclay, Robert A.
name: Mathiesen, Allison
name: Aman,
name: Kashanchi, Fatah
name: Lepene, Benjamin
name: Schwab, Angela
name: DeMarino, Catherine
name: Iordanskiy, Sergey
name: Akpamagbo, Yao A.
name: Pleet, Michelle L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Ebola virus (EBOV) is an enveloped, ssRNA virus from the family Filoviridae capable of causing severe hemorrhagic fever with up to 80–90% mortality rates. The most recent outbreak of EBOV in West Africa starting in 2014 resulted in over 11,300 deaths; however, long-lasting persistence and recurrence in survivors has been documented, potentially leading to further transmission of the virus. We have previously shown that exosomes from cells infected with HIV-1, HTLV-1 and Rift Valley Fever virus are able to transfer viral proteins and non-coding RNAs to naïve recipient cells, resulting in an altered cellular activity. In the current manuscript, we examined the effect of Ebola structural proteins VP40, GP, NP and VLPs on recipient immune cells, as well as the effect of exosomes containing these proteins on naïve immune cells. We found that VP40-transfected cells packaged VP40 into exosomes, and that these exosomes were capable of inducing apoptosis in recipient immune cells. Additionally, we show that presence of VP40 within parental cells or in exosomes delivered to naïve cells could result in the regulation of RNAi machinery including Dicer, Drosha, and Ago 1, which may play a role in the induction of cell death in recipient immune cells. Exosome biogenesis was regulated by VP40 in transfected cells by increasing levels of ESCRT-II proteins EAP20 and EAP45, and exosomal marker proteins CD63 and Alix. VP40 was phosphorylated by Cdk2/Cyclin complexes at Serine 233 which could be reversed with r-Roscovitine treatment. The level of VP40-containing exosomes could also be regulated by treated cells with FDA-approved Oxytetracycline. Additionally, we utilized novel nanoparticles to safely capture VP40 and other viral proteins from Ebola VLPs spiked into human samples using SDS/reducing agents, thus minimizing the need for BSL-4 conditions for most downstream assays. Collectively, our data indicates that VP40 packaged into exosomes may be responsible for the deregulation and eventual destruction of the T-cell and myeloid arms of the immune system (bystander lymphocyte apoptosis), allowing the virus to replicate to high titers in the immunocompromised host. Moreover, our results suggest that the use of drugs such as Oxytetracycline to modulate the levels of exosomes exiting EBOV-infected cells may be able to prevent the devastation of the adaptive immune system and allow for an improved rate of survival.
The Viscosity Coefficients of Oriented Nematic and Nematic Discotic Liquid Crystals; Affine Transformation Model
Creators: name: Baalss, D.
name: Hess, Siegfried
Publisher: name: Technische Universität Berlin
Year: 1988
Subjects: subject: 500 Naturwissenschaften und Mathematik
subject: viscosity coefficients
subject: oriented nematic
subject: nematic discotic
subject: liquid crystals

description: General expressions are derived for the anisotropy of the viscosity and for the Leslie coefficients governing the flow alignment subject to the assumption that the equipotential surfaces for the interaction of oriented nonspherical molecules in the nematic or nematic discotic phase of a liquid crystal are related to a spherical interaction potential by an affine transformation. In particular, for uniaxial particles, the seven independent viscosity coefficients of a nematic are given in terms of the two viscosity coefficients of a reference fluid of spherical particles and the axes ratio of the nonspherical molecules. The theory is compared with results from nonequilibrium molecular dynamics computer simulations and with experimental data.
XUV Irradiation of Young Exoplanetary Atmospheres - Two study cases
Creators: name: Maggio, Antonio
name: Argiroffi, Costanza
name: Benatti, Serena
name: Colombo, Salvatore
name: Locci, Daniele
name: Pillitteri, Ignazio
name: Sanz Forcada, Jorge
Publisher: name: Zenodo
Year: 2023
Subjects: star-planet interaction
high-energy radiation
solar-like stars
planetary atmospheres

description: Observations and modeling of stellar XUV emission in different evolutionary phases is fundamental to understand photochemistry and evaporation processes in exoplanetary atmospheres. As part of the on-going project THE StellaR PAth (Time-dependent High-Energy Radiation and Planetary Atmosphere interaction) we present initial results of our first two study cases of gaseous exoplanets irradiated by young solar-like stars, based on dedicated follow-up observations of the host stars with XMM-Newton and HST.
 The systems are orbiting the young stars V1298 Tau and DS Tuc A, for which we derived spectral properties of the high-energy emission during quiescent and flaring states. We discuss short-term and long-term effects of the XUV irradiation on the planetary atmospheres.
description: We acknowledge financial contribution from the ASI-INAF agreement n.2018-16-HH.0 (THE StellaR PAth project), and from the ARIEL ASI-INAF agreement n.2021-5-HH.0. We also acknowledge partial support by the projects HOT-ATMOS (PRIN INAF 2019) and PLATEA (ASI-INAF agreement n.2018-16-HH.0).
description: {"references": ["Benatti, S. et al. (2019), A&A, 630, A81", "Benatti, S. et al. (2021), A&A, 650, A66", "Colombo, S. et al. (2022), A&A, 661, A148", "David, T.J. et al. (2019), ApJ, 885, L12", "Drake, J.J. et al. (2013), ApJ, 764, 170", "Flaccomio, E. et al. (2018), A&A, 620, A55", "Johnstone, C.P. et al. (2021), A&A, 649, A96", "King, G.W. et al. (2018), MNRAS, 478, 1193", "Kraus, A.L. et al. (2014), AJ, 147, 146", "Kubyshkina, D. et al. (2018), ApJ, 866, L18", "Locci, D. et al. (2019), A&A, 624, A101", "Locci, D. et al. (2022), PSJ, 3, 1", "Lopez, E.D. & Fortney, J.J. (2014), ApJ, 792, 1", "Maggio, A. et al. (2022), ApJ, 925, 172", "Newton, E.R. et al. (2019), ApJ, 880, L17", "Penz, T. et al. (2008), A&A, 477, 309", "Pillitteri, I. et al. (2022), A&A, 666, A198", "Sanz Forcada, J. et al. (2022), A&A, 666, A198", "Sanz Forcada, J. et al. (2023), Proceedings CS21, DOI 10.5281/zenodo.7561725", "Su\u00e1rez Mascare\u00f1o, A., Damasso, M. et al. (2022), NatAs, 6, 232"]}
Dynamics and Stability in Retail Competition
Creators: name: Villena, Marcelo J.
name: Araneda, Axel A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: Retail competition today can be described by three main features: i) oligopolistic competition, ii) multi-store settings, and iii) the presence of large economies of scale. In these markets, firms usually apply a centralized decisions making process in order to take full advantage of economies of scales, e.g. retail distribution centers. In this paper, we model and analyze the stability and chaos of retail competition considering all these issues. In particular, a dynamic multi-market Cournot-Nash equilibrium with global economies and diseconomies of scale model is developed. We confirm the non-intuitive hypothesis that retail multi-store competition is more unstable that traditional small business that cover the same demand. The main sources of stability are the scale parameter and the number of markets
description: 18 pages, 4 figures
Spectroscopic Evidence for Pseudorotation of Seven-Membered Chalcogen Rings in Solution [1]
Creators: name: Steudel, Ralf
name: Papavassiliou, Maria
name: Jensen, Detlef
name: Seppelt, Konrad
Publisher: name: Technische Universität Berlin
Year: 1988
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: 77Se NMR Spectra
subject: Raman Spectra
subject: elemental Sulfur
subject: Selenium sulfides

description: The 77Se NMR spectrum of l,2-Se2S5 exhibits one singlet at 1077.3 ppm indicating pseudorotation in solution; the same conclusion is reached from the solution Raman spectrum of S7 showing characteristic line broadening compared to the solid state spectrum.
title: Iowa Byington Reed diary 10, January 1, 1883-December 31, 1883
Creators: name: Reed, Iowa Byington
Publisher: name: University of Iowa. Libraries
Year: 2012
Subjects: subject: FOS: History and archaeology
valueUri: http://www.oecd.org/science/inno/38235147.pdf
subject: FOS: History and archaeology
subject: Domestic life
valueUri: http://id.loc.gov/vocabulary/graphicMaterials/tgm003216

description: Iowa Byington Reed's diaries contain daily entries covering her life from age twenty to just a few weeks before her death at age eighty-four (1872-1936).
Sufficient criterion for guaranteeing that a two-qubit state is unsteerable
Creators: name: Bowles, Joseph
name: Hirsch, Flavien
name: Quintino, Marco Túlio
name: Brunner, Nicolas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum steering can be detected via the violation of steering inequalities, which provide sufficient conditions for the steerability of quantum states. Here we discuss the converse problem, namely ensuring that a state is unsteerable, and hence Bell local. We present a simple criterion, applicable to any two-qubit state, which guarantees that the state admits a local hidden state model for arbitrary projective measurements. We find new classes of unsteerable entangled states, which can thus not violate any steering or Bell inequality. In turn, this leads to sufficient conditions for a state to be only one-way steerable, and provides the simplest possible example of one-way steering. Finally, by exploiting the connection between steering and measurement incompatibility, we give a sufficient criterion for a continuous set of qubit measurements to be jointly measurable.
description: 7 pages