cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Conditional-mean Multiplicative Operator Models for Count Time Series
Creators: name: Weiß, Christian H.
name: Zhu, Fukang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Multiplicative error models (MEMs) are commonly used for real-valued time series, but they cannot be applied to discrete-valued count time series as the involved multiplication would not preserve the integer nature of the data. Thus, the concept of a multiplicative operator for counts is proposed (as well as several specific instances thereof), which are then used to develop a kind of MEMs for count time series (CMEMs). If equipped with a linear conditional mean, the resulting CMEMs are closely related to the class of so-called integer-valued generalized autoregressive conditional heteroscedasticity (INGARCH) models and might be used as a semi-parametric extension thereof. Important stochastic properties of different types of INGARCH-CMEM as well as relevant estimation approaches are derived, namely types of quasi-maximum likelihood and weighted least squares estimation. The performance and application are demonstrated with simulations as well as with two real-world data examples.
description: 45 pages
title: Echtzeit-Feedback von Insertionskräften in einem Trainingsmodell zur minimal-invasiven Cochlea Implantation
Creators: name: Loth, Andreas G.
name: Leinung, Martin
name: Adel, Youssef
name: Helbig, Silke
name: Stöver, Timo
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Es wird allgemein davon ausgegangen, dass geringe Insertionskräfte bei der Cochlea Implantation (CI) mit einer geringeren Traumatisierung der cochleären Strukturen und einem verbesserten Resthörerhalt einhergehen. Ziel dieser Arbeit ist der Aufbau eines Trainingsmodells zur atraumatischen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Investigating the effect of Milky Way dwarf spheroidal galaxies extension on dark matter searches with Fermi-LAT data
Creators: name: Di Mauro, Mattia
name: Stref, Martin
name: Calore, Francesca
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Satellite galaxies of the Milky Way with high mass-to-light ratios and little baryon content, i.e. dwarf spheroidal galaxies (dSphs), are among the most promising targets to detect or constrain the nature of dark matter (DM) through its final annihilation products into high-energy photons. Previously, the assumption that DM emission from dSphs is point-like has been used to set strong constraints on DM candidates using data from the Fermi Large Area Telescope (LAT). However, due to their high DM densities and proximity, dSphs actually have sufficient angular extension to be detected by the Fermi-LAT. Here, we assess, for the first time, the impact of accounting for angular extension in the search for gamma-ray DM signals towards known dSphs with Fermi-LAT. We show that, depending on the dSph under consideration, limits on the DM cross section can be weakened by up to a factor of 2-2.5, while the impact on the stacked, i.e. combined, limits is at most 1.5-1.8 depending on the annihilation channel. This result is of relevance when comparing dSphs limits to other multi-messenger DM constraints and for testing the DM interpretation of anomalous "excesses".
description: 16 pages, 8 figures and 2 tables. This version matches the published version in the PRD journal
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 10 Nr. 4 (1957): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
title: Biologisierung des Interface zwischen Hörnerv und Cochlea-Implantat
Creators: name: Löwenheim, Hubert
name: Frick, Claudia
name: Wank, Ute
name: Wiesmüller, Karl-Heinz
name: Senn, Pascal
name: Müller, Marcus
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Für die Funktion von Cochlea Implantaten spielt der anatomische Abstand zwischen Elektrodenkontakten und den zu stimulierenden Spiralganglienneuronen eine entscheidende Rolle. Sowohl die Frequenzselektivität als auch der Energieverbrauch werden durch den Abstand negativ beeinflusst.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Ultra and the air war in Europe, 1943-1945: the R.A.F. and the Luftwaffe
Creators: name: Milevic, Paul (Paul Theodore), 1953-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: D 810 S7 M54 1986
subject: World War, 1939-1945 - Secret service - Great Britain
subject: Great Britain. Royal Air Force
subject: Germany. Luftwaffe

description: Bibliography: p. 207-211.
description: In 1940, British Intelligence succeeded in breaking the German secret radio cipher, Enigma. The intelligence gleaned from this source came to be known as "Ultra", an abbreviation for "Ultra Secret". Since the Luftwaffe (German Air Force) was the most verbose source of Enigma traffic, Ultra enabled British Intelligence to obtain detailed intelligence on virtually all aspects of the Luftwaffe. This study found that the history of the air war from November 1943 to May 1945 needed to be revised in light of Ultra's revelations. The analysis of the recently released Ultra documents was significant in the following areas: firstly in demonstrating that Ultra is a source of new historical interpretations in such cases as the oil offensive and the continuing strength of the Luftwaffe, and secondly, in revising the history of the air war by revealing what was known at the time in regard to the strategic bombing offensive, the "Production Miracle" and "Overlord".
Approximate Autonomous Quantum Error Correction with Reinforcement Learning
Creators: name: Zeng, Yexiong
name: Zhou, Zheng-Yang
name: Rinaldi, Enrico
name: Gneiting, Clemens
name: Nori, Franco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Autonomous quantum error correction (AQEC) protects logical qubits by engineered dissipation and thus circumvents the necessity of frequent, error-prone measurement-feedback loops. Bosonic code spaces, where single-photon loss represents the dominant source of error, are promising candidates for AQEC due to their flexibility and controllability. While existing proposals have demonstrated the in-principle feasibility of AQEC with bosonic code spaces, these schemes are typically based on the exact implementation of the Knill-Laflamme conditions and thus require the realization of Hamiltonian distances $d\geq 2$. Implementing such Hamiltonian distances requires multiple nonlinear interactions and control fields, rendering these schemes experimentally challenging. Here, we propose a bosonic code for approximate AQEC by relaxing the Knill-Laflamme conditions. Using reinforcement learning (RL), we identify the optimal bosonic set of codewords (denoted here by RL code), which, surprisingly, is composed of the Fock states $\vert 2\rangle$ and $\vert 4\rangle$. As we show, the RL code, despite its approximate nature, successfully suppresses single-photon loss, reducing it to an effective dephasing process that well surpasses the break-even threshold. It may thus provide a valuable building block toward full error protection. The error-correcting Hamiltonian, which includes ancilla systems that emulate the engineered dissipation, is entirely based on the Hamiltonian distance $d=1$, significantly reducing model complexity. Single-qubit gates are implemented in the RL code with a maximum distance $d_g=2$.
E. B. Garrison, Studies in the History of Mediaeval Italian Painting. Vol. 1
Creators: name: Waetzoldt, Stephan
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: E. B. Garrison, Studies in the History of Mediaeval Italian Painting. Vol. 1. Florenz 1953 - 1954. 214 S. (Subskriptionspreis $ 5.-).
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 10 Nr. 6 (1957): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Corpus Vitrearum Medii Aevi. Schweiz, Band 1: Ellen J. Beer, Die Glasmalereien der Schweiz vom 12. bis zum Beginn des 14. Jahrhunderts
Creators: name: Wentzel, Hans
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Rezension zu: Corpus Vitrearum Medii Aevi. Schweiz, Band 1: Ellen J. Beer, Die Glasmalereien der Schweiz vom 12. bis zum Beginn des 14. Jahrhunderts, Birkhäuser Verlag, Basel 1956, 140 S. mit 28 Textabb., 69 Taf., 9 Farbtaf., 56 Vergleichsabb. auf Tafeln.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 10 Nr. 6 (1957): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Field diffeomorphisms and the algebraic structure of perturbative expansions
Creators: name: Kreimer, Dirk
name: Velenich, Andrea
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider field diffeomorphisms in the context of real scalar field theories. Starting from free field theories we apply non-linear field diffeomorphisms to the fields and study the perturbative expansion for the transformed theories. We find that tree level amplitudes for the transformed fields must satisfy BCFW type recursion relations for the S-matrix to remain trivial. For the massless field theory these relations continue to hold in loop computations. In the massive field theory the situation is more subtle. A necessary condition for the Feynman rules to respect the maximal ideal and co-ideal defined by the core Hopf algebra of the transformed theory is that upon renormalization all massive tadpole integrals (defined as all integrals independent of the kinematics of external momenta) are mapped to zero.
description: 8 pages, 2 figures
title: Intracochleäres Druckverhalten bei unterschiedlichen Abdichtungstechniken der Cochleostomie/RW nach CI Elektrodeninsertion
Creators: name: Luger, Julica
name: Todt, Ingo
name: Mittmann, Philipp
name: Wagner, Jan
name: Seidl, Rainer
name: Ernst, Arneborg
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Bei der Cochleaimplantation kommt es während der operativen Teilabschnitte zu intracochleären Druckveränderungen. Das Ausmaß der intracochleären Druckverhältnisse wird als maßgeblich für den Resthörerhalt angesehen. Neben der RW Eröffnung[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Plasmons and Coulomb drag in Dirac/Schroedinger hybrid electron systems
Creators: name: Principi, Alessandro
name: Carrega, Matteo
name: Asgari, Reza
name: Pellegrini, Vittorio
name: Polini, Marco
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that the plasmon spectrum of an ordinary two-dimensional electron gas (2DEG) hosted in a GaAs heterostructure is significantly modified when a graphene sheet is placed on the surface of the semiconductor in close proximity to the 2DEG. Long-range Coulomb interactions between massive electrons and massless Dirac fermions lead to a new set of optical and acoustic intra-subband plasmons. Here we compute the dispersion of these coupled modes within the Random Phase Approximation, providing analytical expressions in the long-wavelength limit that shed light on their dependence on the Dirac velocity and Dirac-fermion density. We also evaluate the resistivity in a Coulomb-drag transport setup. These Dirac/Schroedinger hybrid electron systems are experimentally feasible and open new research opportunities for fundamental studies of electron-electron interaction effects in two spatial dimensions.
description: 7 pages, 4 figures
title: Audiometrische Ergebnisse nach Ankopplung der Vibrant Soundbridge über RWS-, Incus-LP- oder Incus-SP-Coupler
Creators: name: Lundershausen, Anna
name: Schendzielorz, Philipp
name: Rak, Kristen
name: Hagen, Rudolf
name: Radeloff, Andreas
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Die Vibrant Soundbridge (VSB) ist ein aktives Mittelohrimplantat, das sowohl bei Innenohrschwerhörigkeit, als auch bei Schallleitungs- oder kombiniertem Hörverlust angewendet werden kann. Mit der aktuellen Version der VSB sind neue Coupler vorgestellt worden. Die vorliegende Arbeit untersucht[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 87. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
Stochastic analysis of the Elo rating algorithm in round-robin tournaments
Creators: name: Zanco, Daniel Gomes de Pinho
name: Szczecinski, Leszek
name: Kuhn, Eduardo Vinicius
name: Seara, Rui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The Elo algorithm, renowned for its simplicity, is widely used for rating in sports tournaments and other applications. However, despite its widespread use, a detailed understanding of the convergence characteristics of the Elo algorithm is still lacking. Aiming to fill this gap, this paper presents a comprehensive (stochastic) analysis of the Elo algorithm, considering round-robin tournaments. Specifically, analytical expressions are derived describing the evolution of the skills and performance metrics. Then, taking into account the relationship between the behavior of the algorithm and the step-size value, which is a hyperparameter that can be controlled, design guidelines and discussions about the performance of the algorithm are provided. Experimental results are shown confirming the accuracy of the analysis and illustrating the applicability of the theoretical findings using real-world data obtained from SuperLega, the Italian volleyball league.
Resonant multi-photon IR dissociation spectroscopy of a trapped and sympathetically cooled biomolecular ion species
Creators: name: Wellers, Ch.
name: Borodin, A.
name: Vasilyev, S.
name: Offenberg, D.
name: Schiller, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this work we demonstrate vibrational spectroscopy of polyatomic ions that are trapped and sympathetically cooled by laser-cooled atomic ions. We use the protonated dipeptide tryptophane-alanine (HTyrAla+) as a model system, cooled by Barium ions to less than 800mK secular temperature. The spectroscopy is performed on the fundamental vibrational transition of a local vibrational mode at 2.74 μm using a continuous-wave optical parametric oscillator (OPO). Resonant multi-photon IR dissociation spectroscopy (without the use of a UV laser) generates charged molecular fragments, which are sympathetically cooled and trapped, and subsequently released from the trap and counted. We measured the cross section for R-IRMPD under conditions of low intensity, and found it to be approximately two orders smaller than the vibrational excitation cross section. The observed rotational bandwidth of the vibrational transition is larger than the one expected from the combined effects of 300 K black-body temperature, conformer-dependent line shifts, and intermolecular vibrational relaxation broadening (J. Stearns et al., J. Chem. Phys., 127, 154322-7 (2007)). This indicates that as the internal energy of the molecule grows, an increase of the rotational temperature of the molecular ions well above room temperature (up to on the order of 1000K), and/or an appreciable shift of the vibrational transition frequency (approx. 6-8 cm$^{-1}$) occurs.
On-chip polarization-encoded single-qubit gates with twisted waveguides
Creators: name: Morozko, Fyodor
name: Novitsky, Andrey
name: Mikhalychev, Alexander
name: Karabchevsky, Alina
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Integrated photonics is a remarkable platform for scalable classical and quantum light-based information processing. However, polarization manipulation on a chip despite of its fundamental significance in information processing remains elusive. Polarization manipulation capabilities have been recently demonstrated in femtosecond laser-inscribed twisted waveguides, although the systematic theoretical description of polarization manipulation has not been established for this architecture. In this work we develop a rigorous theory of a twisted waveguide unveiling its eigenmodes and transmission matrix in the closed form. Utilizing the developed theory, we demonstrate that twisted waveguides can realize virtually arbitrary polarization transformations while satisfying reasonable design constraints. This fact combined with low cost and ease of prototyping of laser inscribed photonic integrated circuits allows us to suggest twisted waveguide as a robust building block for on-chip polarization-encoded information processing.
description: 8 pages, 3 figures
The economics of Atlantic highly migratory species for-hire fishing trips, July-November 2013.
Creators: name: Hutt, Clifford Patton, 1978-
name: Silva, George
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Office of Sustainable Fisheries
Year: 2015
Subjects: subject: Charter boat fishing--Economic aspects--Atlantic Coast (U.S.)

description: The for-hire sector plays a significant role in providing recreational fishing opportunities for Atlantic highly migratory species (HMS) such as tuna, billfish, swordfish, and sharks. Because of the high cost of equipment needed to pursue HMS, many saltwater anglers find chartering a for-hire vessel to be the only affordable alternative. In 2013, there were 3,968 licensed Atlantic HMS Charter/Headboat (CHB) permit holders from Maine to Texas that took an estimated 9,449 for-hire vessel trips in the Atlantic and Gulf of Mexico (not including Texas) to pursue HMS from July to November of 2013. During this time period, NOAA Fisheries conducted a log-book study of randomly selected Atlantic HMS Charter/Headboat (CHB) permit holders to collect trip cost and earnings data. Data were collected on 596 for-hire trips targeting Atlantic HMS. Approximately 68 percent of HMS for-hire trips targeted a combination of pelagic species (most commonly yellowfin tuna, swordfish, or marlin) while 32 percent targeted coastal sharks. Average charter fares for HMS charter boat (6 anglers or fewer) trips ranged from $1,223 in the Southeast (NC - FL) to $2,450 in the Northeast (ME - VA). Net returns per trip ranged from a low of $528 in the Southeast to a high of $1,028 in the Gulf of Mexico (FL -TX). Overall, the $19 million spent on HMS for-hire charter operations generated approximately $51 million in economic output along the Atlantic and Gulf of Mexico coasts.
Benchmarking the 1999 EPAP recommendations with existing fishery ecosystem plans.
Creators: name: Wilkinson, Erin B.
name: Abrams, Karen
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Office of Sustainable Fisheries
Year: 2015
Subjects: subject: Fishery management
subject: Marine ecosystem management

description: Ecosystem-based fisheries management (EBFM)is a holistic, multi-species (vs. single species) approach to fisheries management that recognizes the physical, biological, economic, and social complexities of managing living marine resources. In 1999 the Ecosystem Principles Advisory Panel published a report to Congress that outlined eight recommendations for creating Fishery Ecosystem Plans. We benchmarked those eight recommendations against ten existing Fishery Ecosystem Plans from four Regional Fishery Management Councils. We found that Councils addressed and applied most of the EPAP recommendations in their FEPs, and structured their FEPs differently depending on the specifics of their ecosystems, fisheries, and available information. We found that several recommendations were not addressed in FEPs because the recommendation was either too expansive to be applied with existing information or it was unclear how to apply the recommendation to an FEP. Through our review, we also identified three key concepts central to the development of FEPs that are not addressed directly in the EPAP recommendation, but that would further strengthen FEPs. These include the establishment of ecosystem goals and objectives, using ecosystem indicators to monitor progress or conservation and management needs, and the role of trade-off analysis in optimizing yield across an ecosystem. The wide range of approaches and use of the FEPs also shows that each Council has different needs and priorities for approaching EBFM. Future guidance on the development of FEPs should reflect the need for flexibility in fisheries management, while also promoting consistency in development, implementation and use of FEPs between regions.
VO-KOREL: A Fourier disentangling service of Virtual Observatory
Creators: name: Škoda, Petr
name: Hadrava, Petr
name: Fuchs, Jan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: VO-KOREL is a web service exploiting the technology of Virtual Observatory for providing the astronomers with the intuitive graphical front-end and distributed computing back-end running the most recent version of Fourier disentangling code KOREL. The system integrates the ideas of the e-shop basket, conserving the privacy of every user by transfer encryption and access authentication, with features of laboratory notebook, allowing the easy housekeeping of both input parameters and final results, as well as it explores a newly emerging technology of cloud computing. While the web-based front-end allows the user to submit data and parameter files, edit parameters, manage a job list, resubmit or cancel running jobs and mainly watching the text and graphical results of a disentangling process, the main part of the back-end is a simple job queue submission system executing in parallel multiple instances of FORTRAN code KOREL. This may be easily extended for GRID-based deployment on massively parallel computing clusters. The short introduction into underlying technologies is given, briefly mentioning advantages as well as bottlenecks of the design used.
description: To appear in proceedings of IAU Symposium 282 From Interacting Binaries to Exoplanets: Essential Modeling Tools, Tatransk\'a Lomnica, Slovakia, July 2011, published by Cambridge University Press
Database management system performance comparisons: A systematic literature review
Creators: name: Taipalus, Toni
Publisher: name: arXiv
Year: 2023
Subjects: subject: Performance (cs.PF)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences
subject: H.2; B.8.0; H.3.4

description: Efficiency has been a pivotal aspect of the software industry since its inception, as a system that serves the end-user fast, and the service provider cost-efficiently benefits all parties. A database management system (DBMS) is an integral part of effectively all software systems, and therefore it is logical that different studies have compared the performance of different DBMSs in hopes of finding the most efficient one. This study systematically synthesizes the results and approaches of studies that compare DBMS performance and provides recommendations for industry and research. The results show that performance is usually tested in a way that does not reflect real-world use cases, and that tests are typically reported in insufficient detail for replication or for drawing conclusions from the stated results.
description: 36 pages
Recommender System Based on Algorithm of Bicluster Analysis RecBi
Creators: name: Ignatov, Dmitry I.
name: Poelmans, Jonas
name: Zaharchuk, Vasily
Publisher: name: arXiv
Year: 2012
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: H.2.8
subject: 68T05

description: In this paper we propose two new algorithms based on biclustering analysis, which can be used at the basis of a recommender system for educational orientation of Russian School graduates. The first algorithm was designed to help students make a choice between different university faculties when some of their preferences are known. The second algorithm was developed for the special situation when nothing is known about their preferences. The final version of this recommender system will be used by Higher School of Economics.
Three worlds of Greek-Canadian women: a study of migrant Greek women in Calgary, Alberta
Creators: name: Minions, Donna Mavis, 1937-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: FC 3697.9 G7 M54 1986
subject: Greek Canadians - Alberta - Calgary
subject: Women - Alberta - Calgary

description: Bibliography: p. 181-193.
Pavel Akselrod, Iulii Martov, and Aleksandr Martynov
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2018
Subjects: Mensheviks

description: Photo of Men'shevik leaders and accompanying explanatory note written by Lidiia Dan to Boris Sapir. The note describes a little quarrel between Martov and Aksel'rod caught on this photo. The photo was taken in Zurich in 1916, the note was written in New York on February 2, 1950.
APC Nb$_3$Sn superconductors based on internal oxidation of Nb-Ta-Hf alloys
Creators: name: Xu, X
name: Peng, X
name: Wan, F
name: Rochester, J
name: Bradford, G
name: Jaroszynski, J
name: Sumption, M
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In the last few years, a new type of Nb$_3$Sn superconducting composite, containing a high density of artificial pinning centers (APC) generated via an internal oxidation approach, has demonstrated a significantly superior performance relative to present, state-of-the-art commercial Nb$_3$Sn conductors. This was achieved via the internal oxidation of Nb-4at.%Ta-1at.%Zr alloy. On the other hand, our recent studies have shown that internal oxidation of Nb-Ta-Hf alloys can also lead to dramatic improvements in Nb$_3$Sn performance. In this work we follow up this latter approach, fabricating a 61-stack APC wire based on the internal oxidation of Nb-4at.%Ta-1at.%Hf alloy, and compare its critical current density (Jc) and irreversibility field (Birr) with APC wires made using Nb-4at.%Ta-1at.%Zr. A second goal of this work was to improve the filamentary design of APC wires in order to improve their wire quality and electromagnetic stability. Our new modifications have led to significantly improved RRR and stability in the conductors, while still keeping non-Cu Jc at or above the FCC Jc specification. Further improvement via optimization of the wire recipe and design is ongoing. Finally, additional work needed to make APC conductors ready for applications in magnets is discussed.
description: Matches published version
Slightly Two or Three Dimensional Self-Similar Solutions
Creators: name: Sari, Re'em
name: Bode, J. Nate
name: Yalinewich, Almog
name: MacFadyen, Andrew
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Self similarity allows for analytic or semi-analytic solutions to many hydrodynamics problems. Most of these solutions are one dimensional. Using linear perturbation theory, expanded around such a one-dimensional solution, we find self-similar hydrodynamic solutions that are two- or three-dimensional. Since the deviation from a one-dimensional solution is small, we call these slightly two-dimensional and slightly three-dimensional self-similar solutions, respectively. As an example, we treat strong spherical explosions of the second type. A strong explosion propagates into an ideal gas with negligible temperature and density profile of the form rho(r,theta,phi)=r^{-omega}[1+sigma*F(theta,phi)], where omega>3 and sigma << 1. Analytical solutions are obtained by expanding the arbitrary function F(theta,phi) in spherical harmonics. We compare our results with two dimensional numerical simulations, and find good agreement.
description: Submitted to Physics of Fluids
Perevody "Protokolovʺ"
Creators: name: Nilus, Sergi︠e︡ĭ, 1862-1930
Publisher: name: Columbia University
Year: 2018
Subjects: Jews, Russian
Antisemitism
Jews--Persecutions
Translating and interpreting

description: An instruction manual on how to translate The Protocols of the Elders of Zion. The Protocols of the Elders of Zion is the infamous Russian literary hoax published by the Tsar's secret police. A key element of anti-Semitic thought has been the belief that Jews influence or control world events. The author of the manual instructs translators to use the Russian version as their principal text but to make all necessary additions and corrections in their translations for each specific country.
Optical realization of two-boson tunneling dynamics
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An optical realization of the tunneling dynamics of two interacting bosons in a double-well potential, based on light transport in a four-core microstructured fiber, is proposed. The optical setting enables to visualize in a purely classical system the entire crossover from Rabi oscillations to correlated pair tunneling and to tunneling of a fragmented pair in the fermionization limit.
description: 5 pages, 4 figures
The Sci-GaIA Newsletter - Issue no. 1 - July 2015
Creators: name: Consortium, The Sci-GaIA
Publisher: name: Sci-GaIA Open Access Repository
Year: 2015

description: The Sci-GaIA Partnership is very pleased to bring to your attention the latest developments in the field of Africa-EU cooperation on e-Infrastructures.  The Sci-GaIA project aims at creating a sustainable foundation of educational materials and procedures for the development and management of Science Gateways and e-Infrastructures in Africa and beyond. We do hope that you will enjoy reading this first issue of our newsletter! Best regards, The Sci-GaIA Partnership
Exact emergent higher-form symmetries in bosonic lattice models
Creators: name: Pace, Salvatore D.
name: Wen, Xiao-Gang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Although condensed matter systems usually do not have higher-form symmetries, we show that, unlike 0-form symmetry, higher-form symmetries can emerge as exact symmetries at low energies and long distances. In particular, emergent higher-form symmetries at zero temperature are robust to arbitrary local UV perturbations in the thermodynamic limit. This result is true for both invertible and non-invertible higher-form symmetries. Therefore, emergent higher-form symmetries are $\textit{exact emergent symmetries}$: they are not UV symmetries but constrain low-energy dynamics as if they were. Since phases of matter are defined in the thermodynamic limit, this implies that a UV theory without higher-form symmetries can have phases characterized by exact emergent higher-form symmetries. We demonstrate this in three lattice models, the quantum clock model and emergent ${\mathbb{Z}_N}$ and ${U(1)}$ ${p}$-gauge theory, finding regions of parameter space with exact emergent (anomalous) higher-form symmetries. Furthermore, we perform a generalized Landau analysis of a 2+1D lattice model that gives rise to $\mathbb{Z}_2$ gauge theory. Using exact emergent 1-form symmetries accompanied by their own energy/length scales, we show that the transition between the deconfined and Higgs/confined phases is continuous and equivalent to the spontaneous symmetry-breaking transition of a $\mathbb{Z}_2$ symmetry, even though the lattice model has no symmetry. Also, we show that this transition line must $\textit{always}$ contain two parts separated by multi-critical points or other phase transitions. We discuss the physical consequences of exact emergent higher-form symmetries and contrast them to emergent ${0}$-form symmetries. Lastly, we show that emergent 1-form symmetries are no longer exact at finite temperatures, but emergent $p$-form symmetries with ${p\geq 2}$ are.
description: 22 + 15 pages, 16 figures, 3 appendices. v2: minor changes throughout, added references, updated Sections 3 and 4, and added section 5 on finite temperature effects. v3: made manuscript shorter with minor changes to content. v4: minor changes and added a section on the Fradkin-Shenker model. v5: published version
St. Paulovics, La table de privilèges de Brigetio
Creators: name: Petrikovits, Harald Von
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Stephan Paulovics, La table de privilèges de Brigetio (= Archaeologia Hungarica 20). Budapest 1936. 4°. S. 9—38 ungarischer, S. 39—68 französischer Text mit 2 Abbildungen im Text und 11 Tafeln.
description: Bonner Jahrbücher, Bd. 142 (1937): Bonner Jahrbücher des Vereins von Altertumsfreunden im Rheinlande und des Rheinischen Provinzialmuseums in Bonn
The Effect of selected lesions on type I and II theta generation in the guinea pig
Creators: name: Montoya, Christopher P. E., 1952-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: QP 385 M64 1986
subject: Brain - Localization of functions
subject: Atropine - Physiological
subject: Guinea pigs

description: Bibliography: p. 86-94.
Third quantization of $f(R)$-type gravity
Creators: name: Ohkuwa, Yoshiaki
name: Ezawa, Yasuo
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the third quantization of $f(R)$-type gravity, based on its effective Lagrangian in the case of a flat Friedmann-Lemaitre-Robertson-Walker metric. Starting from the effective Lagrangian, we execute a suitable change of variable and the second quantization, and we obtain the Wheeler-DeWitt equation. The third quantization of this theory is considered. And the uncertainty relation of the universe is investigated in the example of $f(R)$-type gravity, where $f(R)=R^2$. It is shown, when the time is late namely the scale factor of the universe is large, the spacetime does not contradict to become classical, and, when the time is early namely the scale factor of the universe is small, the quantum effects are dominating.
description: 9 pages, Arbitrary constants in (4.19) are changed to arbitrary functions of $\varphi$. Conclusions are not changed. References are added. Typos are corrected
Sci-GaIA Deliverable D4.1 - Dissemination and Exploitation Plan & Communication Chart
Creators: name: Cornea, A
name: Torrenti, C
Publisher: name: Sci-GaIA Open Access Repository
Year: 2015

description: The present Dissemination and Exploitation Plan & Communication Chart (DEP & CoC) introduces the Sci-GaIA project dissemination, exploitation and communication strategy and its implementation plan to be used by the consortium to ensure the high visibility, accessibility and promotion of the project and its results during the grant period and an efficient exploitation of its results after the end of the project. This DEP & CoC will be a reference framework for evaluating the impact of communication and dissemination activities and will be updated and adjusted as the project progresses.
Relaxation dynamics and finite-size effects in a simple model of condensation
Creators: name: Gotti, Gabriele
name: Iubini, Stefano
name: Politi, Paolo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a simple, purely stochastic model characterized by two conserved quantities (mass density $a$ and energy density $h$) which is known to display a condensation transition when $h > 2a^2$: in the localized phase a single site hosts a finite fraction of the whole energy. Its equilibrium properties in the thermodynamic limit are known and in a recent paper (Gabriele Gotti, Stefano Iubini, Paolo Politi, Phys. Rev. E 103, 052133 (2021)) we studied the transition for finite systems. Here we analyze finite-size effects on the energy distribution and on the relaxation dynamics, showing that extremely large systems should be studied in order to observe the asymptotic distribution and even larger systems should be simulated in order to observe the expected relaxation dynamics.
description: 7 pages
(An)Isotropic models in scalar and scalar-tensor cosmologies
Creators: name: Belinchón, José Antonio
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study how the constants $G$ and $Λ$ may vary in different theoretical models (general relativity with a perfect fluid, scalar cosmological models (\textquotedblleft quintessence\textquotedblright) with and without interacting scalar and matter fields and a scalar-tensor model with a dynamical $Λ$) in order to explain some observational results. We apply the program outlined in section II to study three different geometries which generalize the FRW ones, which are Bianchi \textrm{V}, \textrm{VII}$_{0}$ and \textrm{IX}, under the self-similarity hypothesis. We put special emphasis on calculating exact power-law solutions which allow us to compare the different models. In all the studied cases we arrive to the conclusion that the solutions are isotropic and noninflationary while the cosmological constant behaves as a positive decreasing time function (in agreement with the current observations) and the gravitational constant behaves as a growing time function.
GALEX selected Lyman Break Galaxies at z~2: Comparison with other Populations
Creators: name: Haberzettl, L.
name: Williger, G. M.
name: Lehnert, M. D.
name: Nesvadba, N. P. H.
name: Davies, L. J. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present results of a search for bright Lyman break galaxies at 1.5<=z<=2.5 in the GOODS-S field using a NUV-dropout technique in combination with color-selection. We derived a sample of 73 LBG candidates. We compare our selection efficiencies to BM/BX- and BzK methods (techniques solely based on ground-based data sets), and find the NUV data to provide greater efficiency for selecting star-forming galaxies. We estimate LBG candidate ages, masses, star formation rates, and extinction from fitting PEGASE synthesis evolution models. We find about 20% of our LBG candidates are comparable to infrared luminous LBGs or sub-millimeter galaxies which are thought to be precursors of massive elliptical galaxies today. Overall, we can show that although BM/BX and BzK methods do identify star-forming galaxies at z~2, the sample they provide biases against those star-forming galaxies which are more massive and contain sizeable red stellar populations. A true Lyman break criterion at z~2 is therefore more directly comparable to the populations found at z~3, which does contain a red fraction.
description: 14 pages, 11 figures, accepted for publication in ApJ
A. Götze und E. Reinbacher, Bornicke. Ein älter-eisenzeitlicher Urnenfriedhof im Havelland
Creators: name: Hinz, Hermann
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: A. Götze und E. Reinbacher, Bornicke. Ein älter-eisenzeitlicher Urnenfriedhof im Havelland. Deutsche Akademie der Wissenschaften zu Berlin, Schriften der Sektion für Vor- und Frühgeschichte Bd. 14. Berlin 1963. 86 Seiten, 106 Tafeln, 9 Plan- und Profilbeilagen, 2 Abbildungen.
description: Bonner Jahrbücher, Bd. 163 (1963): Bonner Jahrbücher
Inflammation and Pancreatic Ductal Adenocarcinoma: A Potential Scenario for Novel Drug Targets
Creators: name: Uomo, Ilaria
name: Miraglia, Simona
name: Pastorello, Maurizio
Publisher: name: JOP. Journal of the Pancreas
Year: 2010
Subjects: Cyclooxygenase 2; Cytokines; NF-kappa B; Pancreatic Neoplasms; Pancreatitis, Chronic; PPAR gamma; Reactive Oxygen Species

description: No abstract available.

Image: Mechanism of NF-κB action (Author: Boghog2 from Wikimedia Commons)
description: JOP. Journal of the Pancreas, Vol 11, No 3 (2010): May - p. 199-298
Identification and Screening of Individuals at Increased Risk for Pancreatic Cancer with Emphasis on Known Environmental and Genetic Factors and Hereditary Syndromes
Creators: name: Chu, David
name: Kohlmann, Wendy
name: Adler, Douglas G
Publisher: name: JOP. Journal of the Pancreas
Year: 2010
Subjects: Adenocarcinoma; Early Detection of Cancer; Neoplastic Syndromes, Hereditary; Pancreatic Neoplasms; Risk Factors

description: Despite recent diagnostic and therapeutic advances, pancreatic cancer still carries a poor prognosis. Screening high-risk individuals is a relatively new concept with regards to pancreatic cancer but is an area of intense study. Significant effort has been invested in identifying risk factors for pancreatic cancer. Risk factors for pancreatic cancer can be classified into three broad categories: demographic, environmental (host), and hereditary (genetic) predisposition. This manuscript will review the risk factors and genetic syndromes associated with increased risk of developing pancreatic cancer, the role of genetic testing in the evaluation of high-risk patients, the available serologic and imaging tests that can be used to screen these individuals, and will summarize the available literature on attempts at pancreatic cancer screening to date.

Image: Logo of Huntsman Cancer Center, University of Utah School of Medicine. Salt Lake City, UT, USA
description: JOP. Journal of the Pancreas, Vol 11, No 3 (2010): May - p. 199-298
Calculating asteroseismic diagrams for solar-like oscillations
Creators: name: White, Timothy R.
name: Bedding, Timothy R.
name: Stello, Dennis
name: Christensen-Dalsgaard, Jørgen
name: Huber, Daniel
name: Kjeldsen, Hans
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: With the success of the Kepler and CoRoT missions, the number of stars with detected solar-like oscillations has increased by several orders of magnitude, for the first time we are able to perform large-scale ensemble asteroseismology of these stars. In preparation for this golden age of asteroseismology we have computed expected values of various asteroseismic observables from models of varying mass and metallicity. The relationships between these asteroseismic observables, such as the separations between mode frequencies, are able to significantly constrain estimates of the ages and masses of these stars. We investigate the scaling relation between the large frequency separation, Delta nu, and mean stellar density. Furthermore we present model evolutionary tracks for several asteroseismic diagrams. We have extended the so-called C-D diagram beyond the main sequence to the subgiants and the red-giant branch. We also consider another asteroseismic diagram, the epsilon diagram, which is more sensitive to variations in stellar properties at the subgiant stages and can aid in determining the correct mode identification. The recent discovery of gravity-mode period spacings in red giants forms the basis for a third asteroseismic diagram. We compare the evolutionary model tracks in these asteroseismic diagrams with results from pre-Kepler studies of solar-like oscillations, and early results from Kepler.
description: 14 pages, 15 figures and 2 tables, accepted for publication in the Astrophysical Journal
Autoimmune Pancreatitis: A Report from India
Creators: name: Noor, Mohd T
name: Lal, Anupam
name: Kochhar, Rakesh
name: Singhal, Manphool
name: Sidhu, Gurbakshish S
name: Srinivasan, Radhika
name: Rawat, Amit
name: Dutta, Usha
name: Dhiman, Radha K
name: Chawla, Yogesh K
name: Singh, Kartar
Publisher: name: JOP. Journal of the Pancreas
Year: 2010
Subjects: Cholangiopancreatography, Endoscopic Retrograde; Jaundice, Obstructive; Pancreatitis; Serology

description: Context Autoimmune pancreatitis is characterized by immune-mediated inflammation, prominent lymphocytic infiltration and fibrosis of pancreas. It accounts for 4.6-6% of chronic pancreatitis but only a few cases from India have been reported. Objective Evaluation of cases of autoimmune pancreatitis diagnosed between July 2006 and June 2009. Design Retrospective analysis of the clinical records of all patients diagnosed as autoimmune pancreatitis between July 2006 and June 2009. Setting Tertiary care centre, northern India. Main outcome measure Clinical records of all patients with autoimmune pancreatitis were analyzed with respect to their initial diagnosis and treatment, imaging, cytology, serology, presence of other organ involvement and response to treatment. Results The 5 cases of autoimmune pancreatitis included 4 men and one woman ranging in age from 48 to 60 years. The interval between initial consultation and diagnosis ranged from 3 months to 7 years. Symptoms included obstructive jaundice (5/5), abdominal pain (3/5) and weight loss (3/5). In 3 cases a presumptive diagnosis of a pancreatic mass with a biliary stricture was made and, in one patient, the diagnosis of primary sclerosing cholangitis was considered. These four patients had received a biliary stent and it was only on follow-up and review of the repeat CT scan that a diagnosis of autoimmune pancreatitis was suggested. In one patient, a diagnosis of autoimmune pancreatitis was considered in the first instance. Radiologically, all 5 patients showed a bulky pancreas with loss of lobulations. Conclusion In this report from India, we highlight the need for a high index of suspicion in diagnosing autoimmune pancreatitis because it responds dramatically to steroids.

Image: Pancreatic acinar cell cluster with lymphocytes and plasma cells in the background.
description: JOP. Journal of the Pancreas, Vol 11, No 3 (2010): May - p. 199-298