cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lattice-point enumerators of ellipsoids
Creators: name: Malikiosis, Romanos-Diogenes
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Minkowski's second theorem on successive minima asserts that the volume of a 0-symmetric convex body K over the covolume of a lattice Λcan be bounded above by a quantity involving all the successive minima of K with respect to Λ. We will prove here that the number of lattice points inside K can also accept an upper bound of roughly the same size, in the special case where K is an ellipsoid. Whether this is also true for all K unconditionally is an open problem, but there is reasonable hope that the inductive approach used for ellipsoids could be extended to all cases.
description: 9 pages
Supplement of Hellmers, 2020 : code and parameters to compute backwater effects
Creators: name: Hellmers, Sandra
Publisher: name: TUHH Universitätsbibliothek
Year: 2021
Subjects: subject: hydrological modelling
subject: backwater effects
subject: source code
subject: SUDS, LID, WSUD & BMPs
classificationCode: 600
subject: Technik
classificationCode: 620
subject: Ingenieurwissenschaften
classificationCode: 710
subject: Landschaftsgestaltung, Raumplanung

description: Publication of main code sections (modules, subroutines, functions etc.) developed and written by Dr.-Ing. Sandra Hellmers within her dissertation (Hellmers 2020). Theoretical approaches, deriviation of equations and the overall methodology is explained in the dissertation (Hellmers, 2020), (Hellmers & Fröhle 2017) and (Hellmers & Fröhle 2021). The executable core Kalypso-NA_4.0 is released and published in February 2021: http://kalypso.wb.tu-harburg.de/downloads/KalypsoNA/. Supplement information about input and output parameters to compute backwater effects in surface waters of tidal lowland catchments including control structures are summarised in the attached file: "Hellmers_supplement_2020_parameters_backwater.pdf". The code "Kalypso-NA" is published under the terms of the GNU Lesser General Public License as described by the Free Software Foundation, version 2.1. References: Hellmers, S. and Fröhle, P. (2021): Computation of backwater effects in surface waters of tidal lowland catchments including control structures – An efficient and re-usable method implemented in the hydrological open source model Kalypso-NA (4.0), Geosci. Model Dev. Discuss. [preprint], https://doi.org/10.5194/gmd-2021-140, in review. Hellmers, S. (2020): Integrating local scale drainage measures in meso scale hydrological modelling of backwater affected catchments, Dissertation, Institute of River and Coastal Engineering, Technical University Hamburg, Hamburg, Germany. https://doi.org/10.15480/882.2627 Hellmers, S., & Fröhle, P. (2017). Integrating local scale drainage measures in meso scale catchment modelling. Water (Special Issue: Hydroinformatics and Urban Water Systems), 2017(9,71). https://doi.org/10.3390/w9020071
Mortality of migrating Pacific salmon smolts in southern British Columbia, Canada
Creators: name: Melnychuk, Michael Colin
Publisher: name: University of British Columbia
Year: 2009

description: Determination of causes for recent declines in marine survival rates of many Pacific salmon populations has been hindered by lack of information on where and when mortality predominantly occurs. Acoustic telemetry was used to monitor movements of tagged outmigrating juvenile salmon, and mark-recapture models were used to estimate survival. Several methods were developed for estimating detection probabilities (p) of tagged fish: models for combining multiple populations with partially-overlapping migration routes allowed for sharing of information among populations to compensate for small sample sizes; models for estimating p using only local information at detection stations reliably predicted mark-recapture p at large sample sizes; estimated p during mobile transect surveys attenuated from transect lines and depended on boat speed; variation among tags in acoustic strength resulted in minor heterogeneity in p; and p estimates derived from test tag passes were used to estimate freshwater residualization rates. Migration patterns varied among species, with steelhead and sockeye salmon quickly leaving Georgia Strait, and coho and Chinook salmon instead likely residing in the inshore Strait during summer months, thereby confounding interpretation of early ocean mortality. High mortality often occurred before ocean entry. Variation in survival during the downstream and inshore coastal migration was largely attributed to size-selective mortality against smaller fish and variation in migration distance or travel time. Some components of mortality during the downstream and inshore migration were independent of distance travelled, suggesting high mortality periods soon after release in freshwater and soon after ocean entry. Compared to wild conspecifics, hatchery-reared steelhead suffered high mortality immediately after release, and this survival difference was maintained through the inshore migration. In an experiment to test the effect of solar ultraviolet radiation during freshwater rearing on smolt mortality, no survival differences were observed between UV-shaded and UV-exposed treatment groups of coho or sockeye salmon. Overall, instantaneous mortality rates (time-based or distance-based) were highest soon after release, declined during the inshore migration, and were lowest for the remainder of smolt-to-adult ocean life, supporting hypotheses of high mortality early in the migration but not ruling out hypotheses of high mortality during the first marine winter.
title: Methode des Anforderungsmanagements zur Variantenvermeidung in der frühen Phase der Produktentwicklung
Creators: name: Ritter, Lisa
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: Künstliche Intelligenz
subject: Qualitätsmanagement
subject: Produktentwicklung
subject: Variantenmanagement
subject: Natural Language
subject: Processing
subject: Sprachverarbeitung
subject: Computerlinguistik
subject: Natürliche Sprache
subject: 620
subject: Künstliche Intelligenz
subject: Qualitätsmanagement
subject: Produktentwicklung
subject: Ntürliche Sprache
subject: Sprachverstehen
subject: Computerlinguistik

description: Zugleich: Dissertation, Universität Kassel, 2023
You Can Have Better Graph Neural Networks by Not Training Weights at All: Finding Untrained GNNs Tickets
Creators: name: Huang, Tianjin
name: Chen, Tianlong
name: Fang, Meng
name: Menkovski, Vlado
name: Zhao, Jiaxu
name: Yin, Lu
name: Pei, Yulong
name: Mocanu, Decebal Constantin
name: Wang, Zhangyang
name: Pechenizkiy, Mykola
name: Liu, Shiwei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recent works have impressively demonstrated that there exists a subnetwork in randomly initialized convolutional neural networks (CNNs) that can match the performance of the fully trained dense networks at initialization, without any optimization of the weights of the network (i.e., untrained networks). However, the presence of such untrained subnetworks in graph neural networks (GNNs) still remains mysterious. In this paper we carry out the first-of-its-kind exploration of discovering matching untrained GNNs. With sparsity as the core tool, we can find \textit{untrained sparse subnetworks} at the initialization, that can match the performance of \textit{fully trained dense} GNNs. Besides this already encouraging finding of comparable performance, we show that the found untrained subnetworks can substantially mitigate the GNN over-smoothing problem, hence becoming a powerful tool to enable deeper GNNs without bells and whistles. We also observe that such sparse untrained subnetworks have appealing performance in out-of-distribution detection and robustness of input perturbations. We evaluate our method across widely-used GNN architectures on various popular datasets including the Open Graph Benchmark (OGB).
description: Accepted by the LoG conference 2022 as a spotlight
Stimmen der Elfen : op. 31 : drei Duettinen für Sopran und Alt mit Begleitung des Pianoforte
Creators: name: Loewe, Carl
Publisher: name: C.A. Challier & Co.
Year: 1876

description: <> Wald-Elfen, No. 1 <> Blumen-Elfen, No. 2 <> Thurm-Elfen, No. 3
description: componirt von Dr. C. Loewe
Economic and Federal Tax Factors Affecting the Choice of a Legal Farm Business Organization
Creators: name: Boehlje, Michael
name: Krause, Kenneth
name: Boehlje, Michael
name: Krause, Kenneth
Publisher: name: Unknown
Year: 1981
Subjects: subject: Farm Management
subject: Financial Economics
subject: Farm business organization
subject: sole proprietorships
subject: farm partnerships
subject: farm corporations
subject: Federal tax incentives
subject: estate and gift taxes

description: Recently reduced corporate income tax rates and inflation-induced higher tax rates for individuals provide incentives for farmers with taxable incomes above $25,000 to incorporate. Above that level, incorporated farms generally pay less in taxes than unincorporated farms. Compared with sole proprietorships and partnerships, corporations can often accomplish estate planning goals more easily through use of stock and debentures, can purchase certain employee fringe benefits at a lower after-tax cost, and can frequently reduce income taxes further by dividing the farm income among multiple entities (two or more corporations or individuals, each with different responsibilities).
A Proof of Kirchhoff's First Law for Hyperbolic Conservation Laws on Networks
Creators: name: Bayen, Alexandre M.
name: Keimer, Alexander
name: Müller, Nils
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 35R02, 35C99 (Primary) 35L65, 00A71 (Secondary)

description: Networks are essential models in many applications such as information technology, chemistry, power systems, transportation, neuroscience, and social sciences. In light of such broad applicability, a general theory of dynamical systems on networks may capture shared concepts, and provide a setting for deriving abstract properties. To this end, we develop a calculus for networks modeled as abstract metric spaces and derive an analog of Kirchhoff's first law for hyperbolic conservation laws. In dynamical systems on networks, Kirchhoff's first law connects the study of abstract global objects, and that of a computationally-beneficial edgewise-Euclidean perspective by stating its equivalence. In particular, our results show that hyperbolic conservation laws on networks can be stated without explicit Kirchhoff-type boundary conditions.
description: 20 pages, 6 figures
title: VERA Widget (COESO D3.6)
title: D3.6. VERA widget
titleType: AlternativeTitle
Creators: name: De Santis, Luca
name: Lombardo, Tiziana
name: Tankova, Alexandra
Publisher: name: Zenodo
Year: 2023
Subjects: VERA
User engagement
OpenEdition platform
Communication
Widget development
COESO Project

description: The "D3.6 - VERA Widget" document, accompanies the VERA Widget, which was released in June 2023 as an output of the COESO project's "Task 3.5 VERA widget development." The VERA Widget promotes the VERA platform on various external websites and enhances user onboarding through direct call-to-action features.It was specifically developed as a WordPress plugin, with the primary purpose to encourage user engagement and communication externally to the platform and to onboard new users onto the VERA hub (https://vera.operas-eu.org/). Initially, the widget is being seamlessly integrated into external platforms, with a strong focus on WordPress integration, particularly targeting the back-end of the OpenEdition platform Hypotheses.org, which has over 35000 users and over 7000 blogs.
Der  Zuschauer in der Wirthschaft der Regenten und des Volks
Creators: name: [s.n.]
Publisher: name: bey Johann Rudolph Jm-Hof und Sohn
Year: 1767

description: [Verlagsanzeige von 1766:] <> Wirth im Staat, zu Haus und auf dem Lande : Des ersten Jahrgangs I. und IItes Stück : Nachricht
description: Von einer Gesellschaft deutscher Patrioten
description: Bd. 1(1767)
description: Umfang: 8, 36 ungezählte Seiten, 342 Seiten, 2 ungezählte Seiten (mit Illustration, in 6°)
description: Mit Frontispiz (Kupferstich: "Holzach del: - IC Müller sc:")
description: Die letzten zwei Seiten enthalten Verlagswerbung
Probing gas excitation variations in lensed starbursts at cosmic noon: sub-kpc imaging of dust, [CI] and the CO ladder
Creators: name: Harrington, Kevin Corneilus
Publisher: name: Zenodo
Year: 2023

description: The combination of high spatial resolution ALMA observations and strong gravitational lensing has yielded an unprecedented view into the heart of the star-forming gas and dust in the interstellar medium of IR-luminous galaxies at cosmic noon. Here I present a subset of imaging/analyses of one of the largest spatially resolved multi-J CO/[CI] line datasets for individual high-z galaxies. The Planck All-Sky sub-mm Survey to Analyze Gravitationally-lensed Extreme Starbursts 'PASSAGES' sample (Harrington+16, Berman+22) was discovered due to the clear strong lensing evidence, with apparent IR luminosities greater than 10^13.5-14 L ⊙. The ratio between high-to-low-J CO line emission and other properties indicates a widely varying set of gas excitation conditions on global scales. With this multi-J CO/[CI]/dust continuum dataset it is possible to examine spatial variations in their interstellar medium at sub-kpc scales to derive the conditions for rapid star formation.
Hamiltonian Analysis of the Conformal Decomposition of the Gravitational Field
Creators: name: Kluson, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This short note is devoted to the Hamiltonian formulation of the conformal decomposition of the gravitational field that was performed in [gr-qc/0501092]. We also analyze the gauge fixed form of the theory when we fix the conformal symmetry by imposing the condition det g=1.
description: 12 pages
Multikriterielle Bewertung energiewirtschaftlicher Handlungsoptionen
Creators: name: Letzgus, Simon
name: Koch, Christopher
name: Schröder, David
Publisher: name: Zenodo
Year: 2020

description: Im Rahmen von WindNODE hat das Fachgebiet Energiesysteme der TU Berlin ein Indikatorenmodell entwickelt, mit dessen Hilfe eine multikriterielle Bewertung modellgestützter Szenarien eines Energiesystems durchgeführt werden können. Dabei bilden die berücksichtigten Indikatoren die Zieldimensionen Wirtschaftlichkeit, Versorgungssicherheit und Umwelt- und Sozialverträglichkeit ab. Anhand des Indikatorenmodells werden drei Szenarien für den Umbau des deutschen Energiesystems bis zum Jahr 2030 näher analysiert: Ein Basisszenario, ein Effizienzszenario, bei dem Technologien zur Reduzierung des Strom- und Wärmebedarfs zum Einsatz kommen und ein Szenario, bei dem ein beschleunigter Ausbau der Elektromobilität betrachtet wird. Durch die umfassende Betrachtung werden die unterschiedlichen Stärken und Schwächen der Szenarien im Vergleich sichtbar. Dadurch können Handlungsoptionen in den Fokus rücken, die nicht dem kostenminimalen Pfad entsprechen, wenn die damit einhergehenden Verbesserungen in anderen Bereichen als signifikant und wertvoll erachtet werden.
A study of a nonwelded contact interface: exact and approximate formulas for P-SV reflection and transmission coefficients, and frequency domain raytracing
Creators: name: Chaisri, Siriporn
Publisher: name: Graduate Studies
Year: 2002
Subjects: subject: AC1 .T484 2002 C425
subject: Seismic waves - Mathematical models
subject: Seismic waves - Data processing
subject: Seismic reflection method - Data processing
subject: Elastic waves - Mathematical models

description: Bibliography: p. 93-95.
Ladder operators and differential equations for multiple orthogonal polynomials
Creators: name: Filipuk, Galina
name: Van Assche, Walter
name: Zhang, Lun
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: In this paper, we obtain the ladder operators and associated compatibility conditions for the type I and the type II multiple orthogonal polynomials. These ladder equations extend known results for orthogonal polynomials and can be used to derive the differential equations satisfied by multiple orthogonal polynomials. Our approach is based on Riemann-Hilbert problems and the Christoffel-Darboux formula for multiple orthogonal polynomials, and the nearest-neighbor recurrence relations. As an illustration, we give several explicit examples involving multiple Hermite and Laguerre polynomials, and multiple orthogonal polynomials with exponential weights and cubic potentials.
description: 28 pages
Economic Well-Being of Farms: Third Annual Report to Congress on the Status of Family Farms
Creators: name: Jensen, Harald R.
name: Hatch, Thomas C.
name: Harrington, David H.
name: Jensen, Harald R.
name: Hatch, Thomas C.
name: Harrington, David H.
Publisher: name: Unknown
Year: 1981
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Consumer/Household Economics
subject: Farm Management
subject: Typical farms
subject: farm income
subject: farm wealth
subject: tenure
subject: equity

description: A farm’s economic well-being depends greatly on its tenure arrangements (ownership and rental of farm resources) and equity (proportion of assets owned debt free). Farms in the best financial condition are fully owned and debt free (usually established farms). Part-owner farms (operator owns part of the land, rents the rest, and owns all machinery and livestock) are also in good shape. The weakest farms are tenant-operated farms with little equity (usually beginning farmers) and full owner farms with 50-percent equity. The effects of size, wealth, income, and five different tenure-equity arrangements are analyzed here for 20 illustrative farms.
WMAP Constraints On K-Inflation
Creators: name: Devi, N. Chandrachani
name: Nautiyal, Akhilesh
name: Sen, Anjan A
Publisher: name: arXiv
Year: 2011
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: We study the K-Inflation models where the inflaton field has non-canonical kinetic term. In particular, we consider the Dirac-Born-Infeld (DBI) form for the kinetic energy of the inflaton field. We consider quadratic and quartic potentials as well as the potential for the natural inflation. We use a modified version of the MODECODE (proposed by Mortonson et al.) to calculate the power spectrum of the primordial perturbations generated by the inflaton field and subsequently use the WMAP7 results to constrain the models. Interestingly with DBI type kinetic term, lesser gravity waves are produced as one approaches more towards scale invariance. This is true for all the potentials considered. Unlike the canonical case, this feature, in particular, helps the quartic ($λϕ^4$) potential with DBI type kinetic term to be consistent with WMAP data.
description: 9 pages, 4 eps figures, 2 Tables, Latex Style
Was the "naked burst" GRB 050421 really naked ?
Creators: name: Hascoët, R.
name: Uhm, Z. L.
name: Mochkovitch, R.
name: Daigne, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A few long gamma-ray bursts such as GRB 050421 show no afterglow emission beyond the usual initial steep decay phase. It has been suggested that these events correspond to "naked" bursts that occur in a very low density environment. We reconsider this possibility in the context of various scenarios for the origin of the afterglow. In the standard model where the afterglow results from the forward shock as well as in the alternative model where the afterglow comes from the reverse shock, we aim to obtain constraints on the density of the environment, the microphysics parameters, or the Lorentz factor of the ejecta, which are imposed by the absence of a detected afterglow. For the two models we compute the afterglow evolution for different values of the external density (uniform or wind medium) and various burst parameters. We then compare our results to the Swift data of GRB 050421, which is the best example of a long burst without afterglow. In the standard model we show that consistency with the data imposes that the external density does not exceed 1E-5 cm-3 or that the microphysics parameters are very small with epsilon_e
description: 6 pages, 3 figures, 1 table, to appear in A&A
Saying Hello World with Epsilon - A Solution to the 2011 Instructive Case
Creators: name: Rose, Louis M.
name: García-Domínguez, Antonio
name: Williams, James R.
name: Kolovos, Dimitrios S.
name: Paige, Richard F.
name: Polack, Fiona A. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Epsilon is an extensible platform of integrated and task-specific languages for model management. With solutions to the 2011 TTC Hello World case, this paper demonstrates some of the key features of the Epsilon Object Language (an extension and reworking of OCL), which is at the core of Epsilon. In addition, the paper introduces several of the task-specific languages provided by Epsilon including the Epsilon Generation Language (for model-to-text transformation), the Epsilon Validation Language (for model validation) and Epsilon Flock (for model migration).
description: In Proceedings TTC 2011, arXiv:1111.4407
Diboson Physics at the Tevatron
Creators: name: Robson, Aidan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Tevatron diboson measurements are reviewed, and new or recent results reported for Wgamma, Zgamma, and ZZ production in the leptonic decay modes, and for WW/WZ production in the lepton plus jets decay mode. The most stringent limits on anomalous triple gauge couplings are reported for each final state.
description: Presented at the 2011 Hadron Collider Physics symposium (HCP-2011), Paris, France, November 14-18 2011, 5 pages, 13 figures
Rollzustände großer Amplitude in seitlicher Dünung
Creators: name: Baumann, Hellmut
Publisher: name: TUHH Universitätsbibliothek
Year: 1955
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Rollzustände großer Amplitude in seitlicher Dünung
Magneto-Optical Faraday and Kerr Effects in Topological Insulator Films and in Other Layered Quantized Hall Systems
Creators: name: Tse, Wang-Kong
name: MacDonald, A. H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a theory of the magneto-optical Faraday and Kerr effects of topological insulator (TI) films. For film thicknesses short compared to wavelength, we find that the low-frequency Faraday effect in ideal systems is quantized at integer multiples of the fine structure constant, and that the Kerr effect exhibits a giant $π/2$ rotation for either normal or oblique incidence. For thick films that contain an integer number of half wavelengths, we find that the Faraday and Kerr effects are both quantized at integer multiples of the fine structure constant. For TI films with bulk parallel conduction, we obtain a criterion for the observability of surface-dominated magneto-optical effects. For thin samples supported by a substrate, we find that the universal Faraday and Kerr effects are present when the substrate is thin compared to the optical wavelength or when the frequency matches a thick-substrate cavity resonance. Our theory applies equally well to any system with two conducting layers that exhibit quantum Hall effects.
description: 14 pages, 5 figures. This work expands on our previous papers [Phys. Rev. Lett. 105, 057401 (2010); Phys. Rev. B 82, 161104(R) (2010)] by including thick topological insulator films and layered quantized Hall systems in general, as well as the effects of bulk conduction, substrate, and oblique light incidence that are relevant to experiments
Light and Life: Exotic Photosynthesis in Binary Star Systems
Creators: name: O'Malley-James, J. T.
name: Raven, J. A.
name: Cockell, C. S.
name: Greaves, J. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The potential for hosting photosynthetic life on Earth-like planets within binary/multiple stellar systems was evaluated by modelling the levels of photosynthetically active radiation (PAR) such planets receive. Combinations of M and G stars in: (i) close-binary systems; (ii) wide-binary systems and (iii) three-star systems were investigated and a range of stable radiation environments found to be possible. These environmental conditions allow for the possibility of familiar, but also more exotic forms of photosynthetic life, such as infrared photosynthesisers and organisms specialised for specific spectral niches.
description: Accepted for publication in: Astrobiology
Metal-insulator transition, orbital symmetries and gaps in correlated oxides : an impurity control approach
Creators: name: Hossain, M. A.
Publisher: name: University of British Columbia
Year: 2009

description: The primary objective of this research is to develop and study newer ways to control electronic properties of correlated oxide systems using impurities. This goal has been achieved by introducing dilute localized 3d Mn impurities in place of a delocalized 4d Ru sites in a 2-dimensional Ru-O matrix and doping an electronically reconstructed polar surface of YBCO via surface impurities. The first part of the work concentrates on X-ray Absorption Spectroscopy (XAS) and Resonant Soft X-ray Scattering (RSXS) studies on lightly Mn doped Sr₃Ru₂O₇ . Our goal is to understand the electronic structure of the material both at room and low temperature and ultimately to understand the mechanism behind the low temperature metal-insulator transition in this compound. With XAS, we zoom into the local electronic structure of the impurities themselves and discovered unusual valence and crystal field level inversion in the Mn impurities. With the help of density functional theory and cluster multiplet calculations, we developed a model to describe the hierarchy of the crystal eld levels of the Mn impurities. Long range magnetic properties of the compound has been probed with Resonant Soft X-ray Scattering (RSXS) on the Mn and Ru L-edges. We have found and analyzed the (¼,¼,0) structurally forbidden diffraction peak and connected it to an antiferromagnetic instability in the parent compound. Doping dependent scattering studies revealed the magnetic structure of the low temperature insulating phase and ultimately the mechanism behind the metal-insulator transition itself. Angle Resolved Photoemission Spectroscopy (ARPES) has been used to investigate the low energy electronic structure of underdoped high-Tc superconductor YBCO. It has been revealed that due to the presence of polar surfaces there is electronic reconstruction on the surface of a cleaved YBCO sample. A novel technique has been devised that allows one to control the surface doping level in-situ by evaporating Potassium (K) on the YBCO surface. We showed that K tunes the surface doping level by donating electrons and thereby makes it possible to continuously tune the surface doping level throughout the phase diagram.
Evolutionary trends of physical properties of protostellar cores in high-mass star-forming regions revealed by ALMA
Creators: name: Gieser, Caroline
name: Beuther, Henrik
name: Semenov, Dmitry
name: Ahmadi, Aida
name: Henning, Thomas
name: Wells, Molly R. A.
Publisher: name: Zenodo
Year: 2023

description: High-mass star formation is a hierarchical process from cloud, to clump, to core scales. ALMA allows us to probe the physical and chemical properties of the gas and dust of protostellar cores (<0.1pc) in the earliest evolutionary formation phases.We investigated how physical properties, such as the density and temperature profiles, evolve on core scales through the evolutionary sequence during high-mass star formation ranging from protostars in cold infrared dark clouds to evolved UCHII regions. For that we observed 11 high-mass star-forming regions with ALMA at 3 mm wavelengths. The temperature structure and radial profiles (T ~ r-q) were determined by modeling molecular emission of CH3CN with XCLASS and by using the HCN-to-HNC intensity ratio as probes for the gas kinetic temperature. The density profiles (n ~ r-p) were estimated from the continuum visibility profiles.We find evolutionary trends on core scales for the temperature power-law index q increasing from 0.1 to 0.7 from infrared dark clouds to UCHII regions, while for the the density power-law index p on core scales, we do not find strong evidence for an evolutionary trend. However, we find that on the larger clump scales throughout these evolutionary phases the density profile flattens from p~2.2 to p~1.2.By characterizing a large statistical sample of individual fragmented cores, we find that the physical properties, such as the temperature on core scales and density profile on clump scales, evolve even during the earliest evolutionary phases in high-mass star-forming regions. These findings provide observational constraint for theoretical models describing the formation of massive stars.
Study of the Two-Gap Superconductivity in GdO(F)FeAs by ScS-Andreev Spectroscopy
Creators: name: Shanygina, T. E.
name: Ponomarev, Ya. G.
name: Kuzmichev, S. A.
name: Mikheev, M. G.
name: Tchesnokov, S. N.
name: Omel'yanovsky, O. E.
name: Sadakov, A. V.
name: Eltsev, Yu. F.
name: Pudalov, V. M.
name: Usol'tsev, A. S.
name: Khlybov, E. P.
name: Kulikova, L. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Current-voltage characteristics and dynamic conductance of the superconductor - constriction - superconductor junctions in GdO(F)FeAs polycrystalline samples with critical temperatures Tc^local = 46 - 53 K were investigated. Two superconducting gaps, the large Delta_L = 10.5 +- 2 meV, and the small one Delta_S = 2.3 +- 0.4 meV were clearly observed at T = 4.2 K. The 2Delta_L/kTc^local = 5.5 +- 1 ratio gives support to the strong coupling mechanism which is responsible for the high Tc value. Temperature dependence of the large gap Delta_L(T) indicates the presence of intrinsic proximity effect (in k-space) between two superconducting condensates.
description: 7 pages, 6 figures. Submitted to Journal of Physics: Conference Series
The Chemi-Ionization Processes in Slow Collisions of Rydberg Atoms with Ground State Atoms: Mechanism and Applications
Creators: name: Mihajlov, A. A.
name: Sreckovic, V. A.
name: Ignjatovic, Lj. M.
name: Klyucharev, A. N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In this article the history and the current state of research of the chemiionization processes in atom-Rydberg atom collisions is presented. The principal assumptions of the model of such processes based on the dipole resonance mechanism, as well as the problems of stochastic ionization in atom-Rydberg atom collisions, are exposed. The properties of the collision kinetics in atom beams of various types used in contemporary experimentations are briefly described. Results of the calculation of the chemi-ionization rate coefficients are given and discussed for the range of the principal quantum number values 5 < n < 25. The role of the chemi-ionization processes in astrophysical and laboratory low-temperature plasmas, and the contemporary methods of their investigation are described. Also the directions of further research of chemi-ionization processes are discussed in this article.
The perspective of voids on rising cosmology tensions
Creators: name: Contarini, Sofia
name: Pisani, Alice
name: Hamaus, Nico
name: Marulli, Federico
name: Moscardini, Lauro
name: Baldi, Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the main tensions within the current standard model of cosmology from the perspective of the main statistics of cosmic voids, using the final BOSS DR12 data set. For this purpose, we present the first estimate of the $S_8\equiv σ_8\sqrt{Ω_{\rm m}/0.3}$ and $H_0$ parameters obtained from void number counts and shape distortions. To analyze void counts we relied on an extension of the popular volume-conserving model for the void size function, tailored to the application on data, including geometric and dynamic distortions. We calibrated the two nuisance parameters of this model with the official BOSS collaboration mock catalogs and propagated their uncertainty through the statistical analysis of the BOSS void number counts. The constraints from void shapes come from the study of the geometric distortions of the stacked void-galaxy cross-correlation function. In this work we focus our analysis on the $Ω_{\rm m}$-$σ_8$ and $Ω_{\rm m}$-$H_0$ parameter planes and derive the marginalized constraints $S_8 = 0.813^{+0.093}_{-0.068}$ and $H_0 = 67.3^{+10.0}_{-9.1} \ \mathrm{km} \ \mathrm{s}^{-1} \ \mathrm{Mpc}^{-1}$, which are fully compatible with constraints from the literature. These results are expected to notably improve in precision when analyzed jointly with independent probes and will open a new viewing angle on the rising cosmological tensions in the near future.
description: 8 pages, 5 figures, published in A&A
History of Visual Networks
Creators: name: Rodighiero, Dario
Publisher: name: Zenodo
Year: 2019
Subjects: Data visualization
Dataviz
Networks
Visual literature
Visual design
History

description: Introduction to network visualization history from the Middle Ages to the present. This presentation was given at the Massachusetts Institute of Technology on Tuesday 5 November 2019 within the Digital Humanities class of Kurt Fendt.
Schiffsform und Windlast : Korrelations- und Regressionsanalyse von Windkanalmessungen am Modell
Creators: name: Blendermann, Werner
Publisher: name: TUHH Universitätsbibliothek
Year: 1993
Subjects: subject: Schiffsform
subject: Windlast
subject: Korrelationsanalyse
subject: Regressionsanalyse
subject: Windkanalmessung
classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines
subject: Windlast
subject: Korrelationsanalyse
subject: Regressionsanalyse
subject: Windkanal

description: Schiffsform und Windlast – Korrelations- und Regressionsanalyse von Windkanalmessungen am Modell Die Luftströmung an Schiffen ist mit den klassischen Methoden der Hydrodynamik nicht zu berechnen. Damit entziehen sich die Windkräfte und Windmomente der mathematischen Erfassung. Auch für numerische Berechnungsverfahren sind die Schiffe über Wasser im allgemeinen zu kompliziert. Erschwerend kommt hinzu die Vielfalt der Formen sowie möglicher Decksladung und Containerstapelung. Die Luftströmung wird von Einzelheiten des Schiffs beeinflußt, aber nicht beherrscht. All das sind Eigenschaften, wie sie für Ereignisse typisch sind, die vom Zufall abhängen. Die Windlast an Schiffen kann als statistische Größe auf gefaßt werden. Als Analyseverfahren dafür eignen sich Regression und Korrelation. Es zeigt sich, daß die Windlast an Schiffen sich mit wenigen Parametern erfassen läßt. Wenn es auf Feinheiten nicht ankommt, reichen vier leicht zu schätzende Werte: die Beiwerte von Längs- und Querwiderstand und je ein Parameter der Querkraft und des Rollmoments. Zahlenwerte für verschiedene Schiffstypen sind angegeben. Halbempirische Lastfunktionen liefern dann die Kräfte und Momente abhängig vom Anströmwinkel. Sie gelten ohne Einschränkung auch für Sonderfälle wie das Schiff im Windschutz und das Schiff mit Schlagseite. Ausgeprägte Eigenheiten kennzeichnen vor allem die empfindliche Windlängskraft. Deren Wiedergabe läßt sich durch Erweiterung der Lastfunktionen erreichen.
Magnetic control of particle-injection in plasma based accelerators
Creators: name: Vieira, J.
name: Martins, S. F.
name: Pathak, V. B.
name: Fonseca, R. A.
name: Mori, W. B.
name: Silva, L. O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The use of an external transverse magnetic field to trigger and to control electron self-injection in laser- and particle-beam driven wakefield accelerators is examined analytically and through full-scale particle-in-cell simulations. A magnetic field can relax the injection threshold and can be used to control main output beam features such as charge, energy, and transverse dynamics in the ion channel associated with the plasma blowout. It is shown that this mechanism could be studied using state-of-the-art magnetic fields in next generation plasma accelerator experiments.
description: 10 pages, 3 figures
Mass-varying Dark Matter from a Phase Transition
Creators: name: Mandal, Sayan
name: Sehgal, Neelima
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a mass-varying dark matter (MVDM) model consisting of a scalar field and a fermionic field interacting via a simple Yukawa coupling, and containing an exponential self-interaction potential for the scalar field. Analyzing the evolution of this coupled scalar-fermion system in an expanding Universe, we find that it initially behaves like radiation but then undergoes a phase transition after which it behaves like pressureless dark matter. The one free parameter of this model is the temperature at which the phase transition occurs; the mass of the dark matter particle, given by the mass of the fermion, is derived from this. For a phase transition temperature between 10 MeV and $10^7$ GeV, the current dark matter relic density is achieved for a fermion mass in the range of 1 GeV to $10^9$ GeV. In this dark matter model, the scalar becomes a sub-dominant unclustered component of dark matter that can lower the amplitude of structure formation by up to a few percent. Another feature is that the mass-varying fermion component can lead to discrepant measurements of the current dark matter density of about ten percent inferred from early and late-time probes assuming LCDM.
description: 12 pages, 7 figures; version matches that accepted by PRD, changes are elaboration of some details; Mathematica code and notes for numerical/analytic calculations are provided at https://github.com/alphacephei/MVDM
Trends in Flue-Cured Tobacco Farming
Creators: name: Grise, Verner N.
name: Grise, Verner N.
Publisher: name: Unknown
Year: 1981
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Labor and Human Capital
subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: Flue-cured tobacco
subject: farm operators
subject: tobacco acreage
subject: mechanical harvesters
subject: bulk barns
subject: labor use

description: Mechanical harvesting, bulk barn curing, and acres of flue-cured tobacco produced per farm increased substantially during 1972-79, while labor used to harvest tobacco dropped by 35 percent, from 72 million to 47 million hours. Only 16 percent of the tobacco producers owned all the quota they produced in 1979; 63 percent rented some land with quota and 43 percent leased some quota. This study identifies trends in flue-cured tobacco farming in four Southeastern States. The amount of labor used to harvest flue-cured tobacco in the next few years will likely drop as mechanical harvesting and acres per farm increase.
Signature of strange dibaryon in kaon-induced reaction
Creators: name: Ohnishi, Shota
name: Ikeda, Yoichi
name: Kamano, Hiroyuki
name: Sato, Toru
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine how the signature of the strange-dibaryon resonances in the barKNN-piSigmaN system shows up in the scattering amplitude on the physical real energy axis within the framework of Alt-Grassberger-Sandhas (AGS) equations. The so-called point method is applied to handle the three-body unitarity cut in the amplitudes. We also discuss the possibility that the strange-dibaryon production reactions can be used for discriminating between existing models of the two-body barKN-piSigma system with Lambda(1405).
description: 4 pages, 6 figures, talk given at The Fifth Asia-Pacific Conference on Few-Body Problems in Physics 2011 (APFB2011), held in Seoul, Korea, August 22-26, 2011
Data visualization library
Creators: name: Avella, Francesca
name: Mauro, Manuel
Publisher: name: Zenodo
Year: 2021

description: In recent years, with the increasing development of energy simulation tools, there has been a growing need to create data visualizations of simulation results to support the decision-making process in building design. Supporting designers in the early stages of designing buildings, in fact, is strategic to ensure load reduction while still considering the household practices and enhancing the indoor environmental quality. To achieve these objectives, it is necessary to make use of effective building energy modelling with a clear interpretation of the simulation results, thus allowing effective communication between the design team and the involved disciplines/stakeholders. On the one hand many studies show how a clear, smart and reproducible data visualization facilitates the communication of ideas and findings to users, but on the other hand, no standardized way of visualizing simulation results has been defined yet. As part of the EU-funded project Cultural-E, a library for data post-processing and visualization methodologies for simulation-aided design, has been developed. The library applies to plus energy residential building simulation model. It aims to show a clear and shared methodology to effectively communicate building energy and indoor environment quality performance to building designers by collecting custom and ready-made scripting for simulation input report and output post-processing in a standardized way. The library makes the whole process efficient, starting from the geometric model setting, the related input and output, to the dynamic and analytical visualization of data. As a first step, a survey was disseminated among European designers to identify the meaningful performance indicators as well as which aspects of building performance evaluation they need to investigate the most. Thanks to the information collected, a Data Visualisation Library has been developed. The library generates interactive charts and produces an output report with clear interpretation keys starting from basic hourly output data series. Multiple benefits and results can be observed from this new and standardized method of data visualization. By standardizing the simulation data post- processing from model design to final report visualization, the building analysis process is simplified, providing useful guidance through the different stages of the design process. Standardized data visualizations for unambiguous and communication It also allows comparative assessments across multiple buildings and enables effective communication between the design team and the disciplines/stakeholders involved, making this process more streamlined. It is also considered to be an interactive tool because of the contribution coming from the users especially regarding some missing input information that cannot be automatically generated as well as personal interpretations of the graphs to integrate the descriptive information already present. To read the results of the study please visit the project website.
The dust emission of high-redshift quasars
Creators: name: Leipski, C.
name: Meisenheimer, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The detection of powerful near-infrared emission in high redshift (z>5) quasars demonstrates that very hot dust is present close to the active nucleus also in the very early universe. A number of high-redshift objects even show significant excess emission in the rest frame NIR over more local AGN spectral energy distribution (SED) templates. In order to test if this is a result of the very high luminosities and redshifts, we construct mean SEDs from the latest SDSS quasar catalogue in combination with MIR data from the WISE preliminary data release for several redshift and luminosity bins. Comparing these mean SEDs with a large sample of z>5 quasars we could not identify any significant trends of the NIR spectral slope with luminosity or redshift in the regime 2.5 < z < 6 and 10^45 < nuL_nu(1350AA) < 10^47 erg/s. In addition to the NIR regime, our combined Herschel and Spitzer photometry provides full infrared SED coverage of the same sample of z>5 quasars. These observations reveal strong FIR emission (L_FIR > 10^13 L_sun) in seven objects, possibly indicating star-formation rates of several thousand solar masses per year. The FIR excess emission has unusally high temperatures (T ~ 65 K) which is in contrast to the temperature typically expected from studies at lower redshift (T ~ 45 K). These objects are currently being investigated in more detail.
description: 6 pages, 3 figures, to appear in the proceedings to "The Central Kiloparsec in Galactic Nuclei (AHAR2011)", Journal of Physics: Conference Series (JPCS), IOP Publishing
Gravitomagnetism and spinor quantum mechanics
Creators: name: Adler, Ronald J.
name: Chen, Pisin
name: Varani, Elisa
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We give a systematic treatment of a spin 1/2 particle in a combined electromagnetic field and a weak gravitational field that is produced by a slowly moving matter source. This paper continues previous work on a spin zero particle, but it is largely self-contained and may serve as an introduction to spinors in a Riemann space. The analysis is based on the Dirac equation expressed in generally covariant form and coupled minimally to the electromagnetic field. The restriction to a slowly moving matter source, such as the earth, allows us to describe the gravitational field by a gravitoelectric (Newtonian) potential and a gravitomagnetic (frame-dragging) vector potential, the existence of which has recently been experimentally verified. Our main interest is the coupling of the orbital and spin angular momenta of the particle to the gravitomagnetic field. Specifically we calculate the gravitational gyromagnetic ratio as gsubg=1 ; this is to be compared with the electromagnetic gyromagnetic ratio of gsube=2 for a Dirac electron.
description: 12 pages, 1 figure