cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Prehistoric cultural change at Kitselas Canyon
Creators: name: Coupland, Gary
Publisher: name: University of British Columbia
Year: 2010

description: This study investigates the prehistoric transition from egalitarian to ranked social structure at Kitselas Canyon, Skeena River, British Columbia. It contributes to archaeological theory by developing and testing a model of the evolution of cultural complexity. A culture historical contribution is also made in the development of a prehistoric local sequence for Kitselas Canyon. The theoretical model argues that cultural change at Kitselas Canyon occurred as a deviation amplifying process. Beginning with an initial condition of environmentally limited access to the critical salmon resource, the cultural response was to impose further access restriction by placing control of the resource in the hands of fewer and fewer individuals. An important stage in this process is the formation of corporate groups, initially organized along egalitarian lines. It is argued that ranked corporate groups emerged from egalitarian corporate groups, not as a response to subsistence-related stress, but rather as a means of consolidating control over the most productive resource locations. This model is tested against archaeological data from Kitselas Canyon. The historic period is described to elucidate the ethnographic model, which represents the comparative base for the study of prehistoric social change. Data from the Paul Mason Site at Kitselas Canyon is presented. Three cultural components at this site are identified through multivariate quantitative analysis. These results are then integrated with the existing sequence from the nearby Gitaus site to establish a five-phase prehistoric cultural sequence for Kitselas Canyon. This constitutes the temporal framework for the investigation of prehistoric social change. Social change is investigated in terms of a series of variables - residential permanency, storage, population aggregation, household variability, and status goods. Much of the investigation focusses on the Paul Mason Phase, dated at ca. 3000 B.P. This phase represents the development of salmon intensification, residential permanency, large-scale storage, and substantial population aggregation. However, there is no evidence of ascribed status differentiation, as seen historically among the Skeena River groups. This pattern is attributable to the formation of egalitarian corporate groups. This study demonstrates the importance of egalitarian corporate groups in the evolution of Northwest Coast society. Identification of such a group at Kitselas Canyon during the Paul Mason Phase supports the proposition that social ranking evolved as a deviation amplifying process with respect to resource access.
Bloch and Bethe ansatze for the Harper model: A butterfly with a boundary
Creators: name: Xu, Qiao-Ru
name: Cobanera, Emilio
name: Ortiz, Gerardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Based on a recent generalization of Bloch's theorem, we present a Bloch ansatz for the Harper model with an arbitrary rational magnetic flux in various geometries, and solve the associated ansatz equations analytically. In the case of a cylinder and a particular boundary condition, we find that the energy spectrum of edge states has no dependence on the length of the cylinder, which allows us to construct a quasi-one-dimensional edge theory that is exact and describes two edges simultaneously. We prove that energies of bulk states, generating the so-called Hofstadter's butterfly, depend on a single geometry-dependent spectral parameter and have exactly the same functional form for the cylinder and the torus with general twisted boundary conditions, and argue that the (edge) bulk spectrum of a semi-infinite cylinder in an irrational magnetic field is (the complement of) a Cantor set. Finally, realizing that the bulk projection of the Harper Hamiltonian is a linear form over a deformed Weyl algebra, we introduce a Bethe ansatz valid for both cylinder and torus geometries.
description: 13+3 pages, 2+1 figures
Franz Kaiper, Die tschechischen Ortsnamen des Kreises Königinhof an der Elbe. Mit einer Übersichtskarte
Creators: name: Bily, Inge
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 1 (2003)
Generation of entangled channels for perfect teleportation channels using multi-electron quantum dots
Creators: name: Rao, D. D. Bhaktavatsala
name: Ghosh, Sayantan
name: Panigrahi, Prasanta K
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we have proposed a scheme for generating $N$ qubit entangled states which can teleport an unknown state perfectly. By switching on the exchange interaction ($J$) between the qubits one can get the desired states periodically. A multi electron quantum dot can be a possible realization for generating such $N$ qubit states with high fidelity. In the limit of $N \to \infty$, there exists a unique time $t=\frac{1}{J}\cos^{-1}(-1/8)$ where the Hamiltonian dynamics gives the $N$ qubit state that can assist perfect teleportation. We have also discussed the effect of the nuclear spin environment on the fidelity of teleportation for a general $N$ qubit entangled channel.
description: 6 pages, 3 figures
A new effective interaction for the trapped Fermi gas
Creators: name: Alhassid, Y.
name: Bertsch, G. F.
name: Fang, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We apply the configuration-interaction method to calculate the spectra of two-component Fermi systems in a harmonic trap, studying the convergence of the method at the unitary interaction limit. We find that for a fixed regularization of the two-body interaction the convergence is exponential or better in the truncation parameter of the many-body space. However, the conventional regularization is found to have poor convergence in the regularization parameter, with an error that scales as a low negative power of this parameter. We propose a new regularization of the two-body interaction that produces exponential convergence for systems of three and four particles. From the systematics, we estimate the ground-state energy of the four-particle system to be (5.05 +- 0.024)hbar omega.
description: 4 pages, 3 figures
Jan Nowak-Jeziorański, Jerzy Giedroyc, Listy 1952-1998
Creators: name: Wiaderny, Bernard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)
Building an All-in-one Service: Extending an existing Open Access Repository to a complete Research Information System
Creators: name: Rajski, Beate
name: Goldschmidt, Oliver
Publisher: name: Zenodo
Year: 2019
Subjects: DSpace
CRIS
Repository
Research Data
Hamburg

description: The Hamburg University of Technology is using DSpace-CRIS for their Open Access repository. In context of the Hamburg Open Science program this repository is going to be extended with a research data repository and supposed to include all researchers, organization units and publications (also non OA, even without any fulltext) building a research information system and a university bibliography.

DSpace-CRIS is adopting some recommendations for next generation repositories by the Confederation of Open Access Repositories (COAR) and is providing entity structures, which a normal DSpace system does not have yet. Thus we believe, that by

sticking with DSpace (CRIS) we are well prepared for the future having a good community with active developers.

This presentation shows, how DSpace-CRIS helped us to cover the two new components of the repository and which challenges we had to face while developing the new All-in-One system.
description: Hamburg Open Science
Hundert Jahre Osteuropäische Geschichte. Vergangenheit, Gegenwart und Zukunft
Creators: name: Hackmann, Jörg
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 4 (2005)
Teresa Wróblewska, Die Reichsuniversitäten Posen, Prag und Strassburg als Modelle nationalsozialistischer Hochschulen in den von Deutschland besetzten Gebieten.
Creators: name: Białkowski, Błażej
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 4 (2002)
Operando characterization of interfacial charge transfer processes
Creators: name: Baeumer, Christoph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Interface science has become a key aspect for fundamental research questions and for the understanding, design and optimization of urgently needed energy and information technologies. As the interface properties change during operation, e.g. under applied electrochemical stimulus, and because multiple bulk and interface processes coexist and compete, detailed operando characterization is needed. In this perspective, I present an overview of the state-of-the art and challenges in selected X-ray spectroscopic techniques, concluding that among others, interface-sensitivity remains a major concern in the available techniques. I propose and discuss a new method to extract interface-information from nominally bulk sensitive techniques, and critically evaluate the selection of X-ray energies for the recently developed meniscus X-ray photoelectron spectroscopy, a promising operando tool to characterize the solid-liquid interface. I expect that these advancements along with further developments in time and spatial resolution will expand our ability to probe the interface electronic and molecular structure with sub-nm depth and complete our understanding of charge transfer processes during operation.
description: 44 pages, 8 figures
Peter Dohms, "Der Archivar. Mitteilungsblatt für deutsches Archivwesen".
Creators: name: Hartmann, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
Charge fluctuations and feedback effect in shot noise in a Y-terminal system
Creators: name: Bulka, Bogdan R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate a dynamical Coulomb blockade effect and its role in the enhancement of current-current correlations in a three-terminal device with a multilevel splitter, as well as with two quantum dots. Spectral decomposition analysis shows that in the Y-terminal system with a two level ideal splitter, charge fluctuations at a level with a lowest outgoing tunneling rate are responsible for a super-Poissonian shot noise and positive cross-correlations. Interestingly, for larger source-drain voltages, electrons are transferred as independent particles, when three levels participate in transport, and double occupancy is allowed. We can explain compensation of the current correlations as the interplay between different bunching and antibunching processes by performing a spectral decomposition of the correlation functions for partial currents flowing through various levels. In the system with two quantum dots acting as a splitter, a long range feedback effect of fluctuating potentials leads to the dynamical Coulomb blockade and an enhancement of shot noise.
description: 15 pages, 8 figures
Difficulties Of Teaching Mathematics with Distance Learning Application Systems in High Schools
Creators: name: Murni, Murni
name: Yeni, Manovri
name: Saleh, Muhamad
name: Daud, Muhammad
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 390306
subject: Secondary education
classificationCode: 390107
subject: Humanities and social sciences curriculum and pedagogy (excl. economics, business and management)

description: All schools worldwide are rapidly entering the remote education process due to the Covid-19 outbreak. In this process, the math teacher becomes a remote math teaching partner. The teacher's experience in the remote teaching process of this mathematics subject, which is a compulsory subject in all senior secondary schools. This study aimed to see teachers' difficulties, such as problem-solving, class discussions, teaching aids, and appropriate learning methods. The participants of this study which was designed as a complex study were 15 experienced mathematics teachers in various schools in Banda Aceh. This research contributes to knowing the difficulties of mathematics teachers in teaching remotely to improve the quality of distance learning which the government is echoing in the present and future. The study results show that teachers have difficulties in remote math lessons. According to the findings of the research conducted by the participating teachers, mathematics classes should not be taught using applications for distance education; teachers have trouble interacting and communicating with students because there is limited interaction and a lack of direct feedback, and some students do not attend classes; there is a lack of information about the use of the internet and technological tools; there is a significant lack of sufficiency across the curriculum; there are some students who do not attend classes; there is a shortage of information about the use of technological tools.
Konspiracja i opór społeczny w Polsce 1944-1956. Słownik biograficzny
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)
Employment of Surface Modified Biomaterial in Sequestering Divalent Metal Ion
Creators: name: J. Anuradha
name: N. Muthulakshmi Andal
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2019
Subjects: Nickel ions
Characterization
Batch studies
Sorption

description: EnvironmentAsia, 12, 2, 9 - 13
Hubert Gerlich, Organische Arbeit und nationale Einheit. Polen und Deutschland (1830-1880) aus der Sicht Richard Roepells
Creators: name: Kessler, Wolfgang
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 4 (2005)
On the Gibbs-Thomson equation for the crystallization of confined fluids
Creators: name: Scalfi, Laura
name: Coasne, Benoît
name: Rotenberg, Benjamin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The Gibbs-Thomson (GT) equation describes the shift of the crystallization temperature for a confined fluid with respect to the bulk as a function of pore size. While this century old relation is successfully used to analyze experiments, its derivations found in the literature often rely on nucleation theory arguments (i.e. kinetics instead of thermodynamics) or fail to state their assumptions, therefore leading to similar but different expressions. Here, we revisit the derivation of the GT equation to clarify the system definition, corresponding thermodynamic ensemble, and assumptions made along the way. We also discuss the role of the thermodynamic conditions in the external reservoir on the final result. We then turn to numerical simulations of a model system to compute independently the various terms entering in the GT equation, and compare the predictions of the latter with the melting temperatures determined under confinement by means of hyper-parallel tempering grand canonical Monte Carlo simulations. We highlight some difficulties related to the sampling of crystallization under confinement in simulations. Overall, despite its limitations, the GT equation may provide an interesting alternative route to predict the melting temperature in large pores, using molecular simulations to evaluate the relevant quantities entering in this equation. This approach could for example be used to investigate the nanoscale capillary freezing of ionic liquids recently observed experimentally between the tip of an Atomic Force Microscope and a substrate.
description: 14 pages, 9 figures, contains appendix
Symmetry in Full Counting Statistics, Fluctuation Theorem, and Relations among Nonlinear Transport Coefficients in the Presence of a Magnetic Field
Creators: name: Saito, Keiji
name: Utsumi, Yasuhiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study full counting statistics of coherent electron transport through multi-terminal interacting quantum-dots under a finite magnetic field. Microscopic reversibility leads to the symmetry of the cumulant generating function, which generalizes the fluctuation theorem in the context of quantum transport. Using this symmetry, we derive the Onsager-Casimir relation in the linear transport regime and universal relations among nonlinear transport coefficients.
description: 4.1pages, 1 figure
On the Lebesgue measure of the boundary of the evoluted set
Creators: name: Boarotto, Francesco
name: Caravenna, Laura
name: Rossi, Francesco
name: Vittone, Davide
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 93B03, 93B27, 28A99

description: The evoluted set is the set of configurations reached from an initial set via a fixed flow for all times in a fixed interval. We find conditions on the initial set and on the flow ensuring that the evoluted set has negligible boundary (i.e. its Lebesgue measure is zero). We also provide several counterexample showing that the hypotheses of our theorem are close to sharp.
description: 12 pages, 1 figure
Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
Creators: name: Hunte, F.
name: Jaroszynski, J.
name: Gurevich, A.
name: Larbalestier, D. C.
name: Jin, R.
name: Sefat, A. S.
name: McGuire, M. A.
name: Sales, B. C.
name: Christen, D. K.
name: Mandrus, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The ongoing search for new superconductors has recently yielded a new family of oxypnictides composed of alternating La_2O_{2-x}F_x and Fe_2As_2 layers [1-4] with transition temperatures T_c of 25-28 K, which can be raised to 40-43 K by replacing La with Ce [5] or Sm [6] or to 52 K by replacing La with Nd and Pr [7, 8]. Recent experiments and band structure calculations have suggested an unconventional multiband superconductivity in the layers of paramagnetic Fe ions, which would normally destroy superconductivity in the traditional mechanism of the s-wave Cooper pairing. Here we report very high-field resistance measurements up to 45T, which show a remarkable enhancement of the upper critical fields B_c2 at low temperatures, as compared to those expected from the already high slopes of dB_c2/dT ~ 2T/K near T_c . The deduced B_c2(0) ~ 63-65 T exceeds the paramagnetic limit, consistent with strong coupling and important two-band effects in LaFeAsO_0.89F_0.11. We argue that oxypnictides are emerging as a new class of high-field superconductors surpassing the B_c2 of Nb_3Sn, MgB_2, and the Chevrel phases and perhaps approaching the 100T field benchmark of the high-T_c cuprates.
description: 7 pages, 2 figures, title and abstract include subscripts and special characters
Bremer Archäologische Blätter. NF 5 (1998/2000). Begleitpublikation zur Ausstellung "Archäologie in Riga und Bremen - die gemeinsame Hansekultur".
Creators: name: Zühlke, Raoul
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 4 (2002)
Anomalini Peringuey 1902
Creators: name: Madrigal, Kevin
name: Zaragoza-Caballero, Santiago
name: Ramírez-Ponce, Andrés
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae

description: Anomalini genera with perpendicular parameres
Paucar-Cabrera (2003) described Balanogonia with two species. One of the diagnostic characters that defined it was the perpendicular position of parameres regarding the tectum. In the same publication, she noticed that there are other species that share this character like E. pilosipennis Ohaus, 1897, S. guatemalicus Katbeh-Bader, 2000 and S. villosella Blanchard, 1851 (analyzed herein). This condition does not appear to be a diagnostic character that defines just a genus but an entire group of genera endemic to America, i.e., Moroniella, Callirhinus, Mazahuapertha. A comparison of the genitalia of Balanogonia with the genera mentioned before, raises doubt about the placement of B. freudei (Frey, 1968) (see Paucar-Cabrera 2003). This species has the parameres slightly inclined and neither totally perpendicular nor dorsoventrally depressed, the median lobe is not developed, and the distribution is very different between the two species (Fig. 9). It must be said that besides the similar male genitalia morphology, this small group of genera also share specialized anthophilous feeding and diurnal habits. However, despite the similar genital morphological plan, differences between these genera are evident in both genital (Figs 3–4) and somatic morphology (Figs 5–6; Table 1).
For example, Moroniella is distinguished by having the apex of the parameres directed externally with the median lobe having a needle-shaped apex (Fig. 4c), and a longitudinal keel on each side of the base of the median lobe (Fig. 4d); Balanogonia presents simple parameres, completely overlapping (Fig. 4e), with the median lobe broadly rounded at the apex (Fig. 4f); Callirhinus presents the apex of the parameres directed internally with the median lobe acute triangular (Fig. 4g), and with a uniform and slightly concave surface (Fig. 4h); Mazahuapertha presents the apex of the parameres rounded and curved towards outside with the median lobe subtriangular rounded (Fig. 4i), and with the base of the median lobe with uniform and slightly concave surface (Fig. 4j). Strigoderma villosella differs with respect to the others by being the only one with the parameres with a pre-apical notch on the external border (Fig. 4a), abundant setae on both faces (Figs 3a, 4a–b), as well as a conspicuous lobe on each side of the median lobe (Figs 3a, 4b).
description: Published as part of Madrigal, Kevin, Zaragoza-Caballero, Santiago & Ramírez-Ponce, Andrés, 2023, Comparative morphology of the genera with perpendicular parameres in Anomalini (Coleoptera, Scarabaeidae, Rutelinae) allows revalidation of the endemic Mexican genus Lamoana Casey, 1915 stat. rev., pp. 175-199 in European Journal of Taxonomy 910 on pages 182-183, DOI: 10.5852/ejt.2023.910.2369, http://zenodo.org/record/10382272
Local Analogs to High-Redshift Galaxies: I. Characterization of Dust Emission and Star Formation History
Creators: name: Flores, Skarleth M Motiño
name: Wiklind, Tommy
name: Eufrasio, Rafael T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Star-forming dwarf galaxies have properties similar to those expected in high-redshift galaxies. Hence, these local galaxies may provide insights into the evolution of the first galaxies, and the physical processes at work. We present a sample of eleven potential local analogs to high-$z$ (LAHz) galaxies. The sample consists of blue compact dwarf galaxies, selected to have spectral energy distributions that fit galaxies at $1.5
description: Submitted to AAS journals. Comments are welcome
The Correspondence Analysis Platform for Uncovering Deep Structure in Data and Information
Creators: name: Murtagh, Fionn
Publisher: name: arXiv
Year: 2008
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.5.4; H.3.1; I.2.7

description: We study two aspects of information semantics: (i) the collection of all relationships, (ii) tracking and spotting anomaly and change. The first is implemented by endowing all relevant information spaces with a Euclidean metric in a common projected space. The second is modelled by an induced ultrametric. A very general way to achieve a Euclidean embedding of different information spaces based on cross-tabulation counts (and from other input data formats) is provided by Correspondence Analysis. From there, the induced ultrametric that we are particularly interested in takes a sequential - e.g. temporal - ordering of the data into account. We employ such a perspective to look at narrative, "the flow of thought and the flow of language" (Chafe). In application to policy decision making, we show how we can focus analysis in a small number of dimensions.
description: Sixth Annual Boole Lecture in Informatics, Boole Centre for Research in Informatics, Cork, Ireland, 29 April 2008. 28 pp., 17 figures. To appear, Computer Journal. This version: 3 typos corrected
Markus Mauritz, Tschechien. (Ost- und Südosteuropa - Geschichte der Länder und Völker.)
Creators: name: Bollinger, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 1 (2003)
A computer simulation of the pulmonary microvascular exchange system - alveolar flooding
Creators: name: Heijmans, Franciscus R. C.
Publisher: name: University of British Columbia
Year: 2010

description: Previous models of the pulmonary microvascular exchange system (28,29) have been restricted to the study of fluid and solute exchange between the pulmonary microcirculation, interstitial tissue space, and lymphatics. In severe pulmonary edema the capacities of the lymphatics and tissue space are exceeded. The fluid and solutes entering the interstitium from the circulation will, then, be transported Into the air space. The accumulation of fluid in the air space impairs the diffusion of gas (oxygen and carbon dioxide) between the air space and blood circulation; if this fluid accumulation is excessive a patient's health may be compromised. In this thesis severe pulmonary edema is studied by including the air space as a fourth compartment into the interstitial model developed by Bert and Pinder (29). A computer simulation of the four compartment (alveolar) model was developed on a digital computer. Tests of the model were made to study the effect of the parameters which were introduced into the alveolar model. These parameters include: a filtration coefficient that describes the alveolar membrane fluid conductivity, an extravascular fluid volume that represents the point at which fluid enters the air space, the alveolar fluid pressure at the onset of fluid flow into the air space, and the rate of alveolar fluid pressure change relative to an alveolar fluid volume change. For each case the dynamic response of the exchange system was recorded. In addition, two types of pulmonary edema were simulated: 1) hydrostatically induced edema, and 2) edema induced by changes to the fluid and solute permeability of the porous membrane separating the circulatory and interstitial compartments. Due to the limited data available on the interaction of the air space with the other three compartments of the pulmonary microvascular exchange system, only partial verification of the appropriate range of values of the alveolar model parameters and the predictions of the simulations was possible. The alveolar model developed in this thesis is an initial approximation but appears to provide a satisfactory approach for the inclusion of the air space in the pulmonary microvascular exchange system.
Bulk Viscous Cosmology
Creators: name: Colistete, R.
name: Fabris, J. C.
name: Tossa, J.
name: Zimdahl, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a scenario in which the dark components of the Universe are manifestations of a single bulk viscous fluid. Using dynamical system methods, a qualitative study of the homogeneous, isotropic background scenario is performed in order to determine the phase space of all possible solutions. The specific model which we investigate shares similarities with a generalized Chaplygin gas in the background but is characterized by non-adiabatic pressure perturbations. This model is tested against supernova type Ia and matter power spectrum data. Different from other unified descriptions of dark matter and dark energy, the matter power spectrum is well behaved, i.e., there are no instabilities or oscillations on small perturbation scales. The model is competitive in comparison with the currently most popular proposals for the description of the cosmological dark sector.
description: 25 pages, 5 figures, comments and references added, accepted for publication in PRD
Finite-size effects and thermodynamic limit in one-dimensional Janus fluids
Creators: name: Fantoni, R.
name: Maestre, M. A. G.
name: Santos, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The equilibrium properties of a Janus fluid made of two-face particles confined to a one-dimensional channel are revisited. The exact Gibbs free energy for a finite number of particles $N$ is exactly derived for both quenched and annealed realizations. It is proved that the results for both classes of systems tend in the thermodynamic limit ($N\to\infty$) to a common expression recently derived (Maestre M A G and Santos A 2020 J Stat Mech 063217). The theoretical finite-size results are particularized to the Kern--Frenkel model and confirmed by Monte Carlo simulations for quenched and (both biased and unbiased) annealed systems.
description: 23 one-column pages, 6 figures; v2: minor changes
Electron-Positron Pair Production in Space- or Time-Dependent Electric Fields
Creators: name: Kleinert, Hagen
name: Ruffini, Remo
name: Xue, She-Sheng
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Treating the production of electron and positron pairs by a strong electric field from the vacuum as a quantum tunneling process we derive, in semiclassical approximation, a general expression for the pair production rate in a $z$-dependent electric field $E(z)$ pointing in the $z$-direction. We also allow for a smoothly varying magnetic field parallel to $E(z)$. The result is applied to a confined field $E(z)\not=0$ for $|z|\lesssim \ell $, a semi-confined field $E(z)\not=0$ for $ z\gtrsim 0 $, and a linearly increasing field $E(z)\sim z$. The boundary effects of the confined fields on pair-production rates are exhibited. A simple variable change in all formulas leads to results for electric fields depending on time rather than space. In addition, we discuss tunneling processes in which empty atomic bound states are spontaneously filled by negative-energy electrons from the vacuum under positron emission. In particular, we calculate the rate at which the atomic levels of a bare nucleus of finite size $r_{\rm n}$ and large $Z\gg 1$ are filled by spontaneous pair creation.
description: 33 pages and 9 figures. to appear in Phys. Rev. D
Mutually compensative pseudo solutions of primary energy spectra in the knee region
Creators: name: Ter-Antonyan, S. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The problem of the uniqueness of solutions during the evaluation of primary energy spectra in the knee region using an extensive air shower (EAS) data set and the EAS inverse approach is investigated. It is shown that the unfolding of primary energy spectra in the knee region leads to mutually compensative pseudo solutions. These solutions may be the reason for the observed disagreements in the elementary energy spectra of cosmic rays in the 1-100 PeV energy range obtained from different experiments.
description: Accepted for publication in Astroparticle Physics
Trained Model for SSD Resnext50_32x4d_fpn ONNX for MLPerf Inference
Creators: name: Kiswani, Ahmad
Publisher: name: Zenodo
Year: 2021

description: Application: Single-stage Object Detection Base Model: Resnext50 Framework: ONNX 1.10.2 Quality: The COCO mAP(IoU=0.50:0.95) on 5000 validation images is 36.7% Precision: single-precision float Is Quantized: no Is ONNX: yes Dataset: COCO val-2017
Off-line studies of the laser ionization of yttrium at the IGISOL facility
Creators: name: Kessler, T.
name: Moore, I. D.
name: Kudryavtsev, Y.
name: Perajarvi, K.
name: Popov, A.
name: Ronkanen, P.
name: Sonoda, T.
name: Tordoff, B.
name: Wendt, K. D. A.
name: Aysto, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A laser ion source is under development at the IGISOL facility, Jyvaskyla, in order to address deficiencies in the ion guide technique. The key elements of interest are those of a refractory nature, whose isotopes and isomers are widely studied using both laser spectroscopic and high precision mass measurement techniques. Yttrium has been the first element of choice for the new laser ion source. In this work we present a new coupled dye-Ti:Sapphire laser scheme and give a detailed discussion of the results obtained from laser ionization of yttrium atoms produced in an ion guide via joule heating of a filament. The importance of not only gas purity, but indeed the baseline vacuum pressure in the environment outside the ion guide is discussed in light of the fast gas phase chemistry seen in the yttrium system. A single laser shot model is introduced and is compared to the experimental data in order to extract the level of impurities within the gas cell.
description: 18 pages submitted to NIMB
Improved Measurements of Molecular Cloud Distances Based on Global Search
Creators: name: Yan, Qing-Zeng
name: Yang, Ji
name: Su, Yang
name: Sun, Yan
name: Xu, Ye
name: Wang, Hongchi
name: Zhou, Xin
name: Wang, Chen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The principle of the background-eliminated extinction-parallax (BEEP) method is examining the extinction difference between on- and off-cloud regions to reveal the extinction jump caused by molecular clouds, thereby revealing the distance in complex dust environments. The BEEP method requires high-quality images of molecular clouds and high-precision stellar parallaxes and extinction data, which can be provided by the Milky Way Imaging Scroll Painting (MWISP) CO survey and the Gaia DR2 catalog, as well as supplementary AV extinction data. In this work, the BEEP method is further improved (BEEP-II) to measure molecular cloud distances in a global search manner. Applying the BEEP-II method to three regions mapped by the MWISP CO survey, we collectively measured 238 distances for 234 molecular clouds. Compared with previous BEEP results, the BEEP-II method measures distances efficiently, particularly for those molecular clouds with large angular size or in complicated environments, making it suitable for distance measurements of molecular clouds in large samples.
description: Accepted for publication in ApJ. 17 pages, 8 figures
Nerijus Šepetys, Litauen im Visier des Dritten Reiches. Ungeschehene Geschichte eines Reichsprotektorates.
Creators: name: Dieckmann, Christoph
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
Heinrich Schwendemann, Wolfgang Dietsche, Hitlers Schloß. Die "Führerresidenz" in Posen
Creators: name: Schröder, Christoph
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)
Self Similar Renormalization Group Applied to Diffusion in non-Gaussian Potentials
Creators: name: Dean, David S.
name: Touya, Clement
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the problem of the computation of the effective diffusion constant of a Brownian particle diffusing in a random potential which is given by a function $V(ϕ)$ of a Gaussian field $ϕ$. A self similar renormalization group analysis is applied to a mathematically related problem of the effective permeability of a random porous medium from which the diffusion constant of the random potential problem can be extracted. This renormalization group approach reproduces practically all known exact results in one and two dimensions. The results are confronted with numerical simulations and we find that their accuracy is good up to points well beyond the expected perturbative regime. The results obtained are also tentatively applied to interacting particle systems without disorder and we obtain expressions for the self-diffusion constant in terms of the excess thermodynamic entropy. This result is of a form that has commonly been used to fit the self diffusion constant in molecular dynamics simulations.
description: 14 pages, 3 .eps figures, IOP style file
Canonical Nonlinear Connections in the Multi-Time Hamilton Geometry
Creators: name: Atanasiu, Gheorghe
name: Neagu, Mircea
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B40, 53C60, 53C07

description: In this paper we study some geometrical objects (d-tensors, multi-time semisprays of polymomenta and nonlinear connections) on the dual 1-jet vector bundle $J^{1*}(\cal{T}, M)\to \cal{T}\times M$. Some geometrical formulas, which connect the last two geometrical objects, are also derived. Finally, a canonical nonlinear connection produced by a Kronecker $h$-regular multi-time Hamiltonian is given.
description: 18 pages
Grundbegriffe und Autoren ostmitteleuropäischer Exilliteraturen 1945-1989. Ein Beitrag zur Systematisierung und Typologisierung
Creators: name: Wiaderny, Bernard
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2005

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 54 Nr. 4 (2005)
The Thermal Regulation of Gravitational Instabilities in Protoplanetary Disks. IV. Simulations with Envelope Irradiation
Creators: name: Cai, Kai
name: Durisen, Richard H.
name: Boley, Aaron C.
name: Pickett, Megan K.
name: Mejia, Annie C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is generally thought that protoplanetary disks embedded in envelopes are more massive and thus more susceptible to gravitational instabilities (GIs) than exposed disks. We present three-dimensional radiative hydrodynamics simulations of protoplanetary disks with the presence of envelope irradiation. For a disk with a radius of 40 AU and a mass of 0.07 Msun around a young star of 0.5 Msun, envelope irradiation tends to weaken and even suppress GIs as the irradiating flux is increased. The global mass transport induced by GIs is dominated by lower-order modes, and irradiation preferentially suppresses higher-order modes. As a result, gravitational torques and mass inflow rates are actually increased by mild irradiation. None of the simulations produce dense clumps or rapid cooling by convection, arguing against direct formation of giant planets by disk instability, at least in irradiated disks. However, dense gas rings and radial mass concentrations are produced, and these might be conducive to accelerated planetary core formation. Preliminary results from a simulation of a massive embedded disk with physical characteristics similar to one of the disks in the embedded source L1551 IRS5 indicate a long radiative cooling time and no fragmentation. The GIs in this disk are dominated by global two and three-armed modes.
description: ApJ, in press (tentatively scheduled for Jan. 2008, v.673)
Point Defects in Crystals of Charged Colloids
Creators: name: Alkemade, Rinske M.
name: de Jager, Marjolein
name: van der Meer, Berend
name: Smallenburg, Frank
name: Filion, Laura
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Charged colloidal particles - both on the nano and micron scales - have been instrumental in enhancing our understanding of both atomic and colloidal crystals. These systems can be straightforwardly realized in the lab, and tuned to self-assemble into body-centered cubic (BCC) and face-centered cubic (FCC) crystals. While these crystals will always exhibit a finite number of point defects, including vacancies and interstitials - which can dramatically impact their material properties - their existence is usually ignored in scientific studies. Here, we use computer simulations and free-energy calculations to characterize vacancies and interstitials in both FCC and BCC crystals of point-Yukawa particles. We show that, in the BCC phase, defects are surprisingly more common than in the FCC phase, and the interstitials manifest as so-called crowdions: an exotic one-dimensional defect proposed to exist in atomic BCC crystals. Our results open the door to directly observing these elusive defects in the lab.
description: 8 pages, 4 figures
Tree-level scattering amplitudes in nonlocal field theories
Creators: name: Modesto, Leonardo
name: Calcagni, Gianluca
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove in two ways that, for a special class of nonlocal field theories consistent with linear and non-linear stability at the classical level, and with unitarity and super-renormalizability or finiteness at the quantum level, the $n$-point tree-level scattering amplitudes are the same as those of the underlying local theory. In particular, the $n$-point amplitudes of nonlocal gravity, with or without coupling to matter, are the same as for Einstein's general relativity.
description: 1+16 pages. v2: discussion extended, references added
Dorothee Bohle, Europas neue Peripherie. Polens Transformation und transnationale Integration.
Creators: name: Zloch, Stephanie
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 1 (2003)
Optimal state for a Tavis-Cummings quantum battery via the Bethe ansatz method
Creators: name: Lu, Wangjun
name: Chen, Jie
name: Kuang, Le-Man
name: Wang, Xiaoguang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate the effect of different optical field initial states on the performance of the Tavis-Cummings (T-C) quantum battery. In solving the dynamical evolution of the system, we found a fast way to solve the Bethe ansatz equation. We find that the stored energy and the average charging power of the T-C quantum battery are closely related to the probability distribution of the optical field initial state in the number states. We define a quantity called the number-state stored energy. With this prescribed quantity, we only need to know the probability distribution of the optical field initial state in the number states to obtain the stored energy and the average charging power of the T-C quantum battery at any time. We propose an equal probability and equal expected value splitting method by which we can obtain two inequalities, and the two inequalities can be reduced to Jensen's inequalities. By this method, we found the optimal initial state of the optical field. We found that the maximum stored energy and the maximum average charging power of the T-C quantum battery are proportional to the initial average photon number, and the quantum battery can be fully charged when the initial average photon number is large enough. We found two phenomena, which can be described by two empirical inequalities. These two phenomena imply the hypersensitivity of the stored energy of the T-C quantum battery to the number-state cavity field. Finally, we discussed the impact of decoherence on battery performance.
description: 12 pages, 6 figures
Dynamical simulations with HYP-link Wilson fermions
Creators: name: Hasenfratz, Anna
name: Hoffmann, Roland
name: Schaefer, Stefan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results from simulations of two dynamical flavors of improved Wilson fermions with nHYP smeared gauge links. We demonstrate that the simulation is stable at a pseudo-scalar mass of 360MeV, a 2.1fm box and a lattice spacing of 0.13fm.
description: 7 pages, 5 figures, contribution to XXV International Symposium on Lattice Field Theory, July 2007, Regensburg, Germany
Extrema de valeurs propres dans une classe conforme
Creators: name: Jammes, Pierre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 35P15, 58J50

description: Survey about extremum of eigenvalues of geometric operators within a conformal class of a compact riemannian manifold.
description: 23 pages, in french
Ernst Eichler, Albrecht Greule, Wolfgang Janka, Robert Schuh,, Beiträge zur slavisch-deutschen Sprachkontaktforschung. 1: Siedlungsnamen im oberfränkischen Stadt- und Landkreis Bamberg.
Creators: name: Udolph, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 4 (2002)
Vejas Gabriel Liulevicius, Kriegsland im Osten. Eroberung, Kolonisierung und Militärherrschaft im Ersten Weltkrieg.
Creators: name: Sieg, Ulrich
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2003

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 52 Nr. 3 (2003)
O'RTA YOSHDAGI BOLALARGA BERILADIGAN MILLIY VA HARAKATLI O'YINLARNI O'RGATISH
Creators: name: Muhammadov, Xosilbek
name: Shoimov, Husan
name: G'aniyev, Suxrob
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada o‘rta yoshdagi bolalarga (6-10 yosh) o‘zbek milliy harakatli o‘yinlarini o‘rgatishning pedagogik ahamiyati va amaliy usullari o‘rganiladi. Milliy o‘yinlar bolalarning jismoniy rivojlanishi, ijtimoiy ko‘nikmalari va madaniy o‘zlikni anglashlarini shakllantirishda muhim vosita sifatida ko‘rib chiqiladi. Tadqiqotda o‘yinlarning bolalar psixo-fiziologik xususiyatlariga mosligi tahlil qilinib, o‘rgatish metodikasi ishlab chiqiladi. Maqola amaliy tavsiyalar bilan yakunlanadi.
Rozdział wspólnej historii. Studia z dziejów Żydów w Polsce ofiarowane profesorowi Jerzemu Tomaszewskiemu w siedemdziesiątą rocznicę urodzin.
Creators: name: Friedrich, Klaus-Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2004

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 53 Nr. 1 (2004)