cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Error mitigation, optimization, and extrapolation on a trapped ion testbed
Creators: name: Maupin, Oliver G.
name: Burch, Ashlyn D.
name: Ruzic, Brandon
name: Yale, Christopher G.
name: Russo, Antonio
name: Lobser, Daniel S.
name: Revelle, Melissa C.
name: Chow, Matthew N.
name: Clark, Susan M.
name: Landahl, Andrew J.
name: Love, Peter J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Current noisy intermediate-scale quantum (NISQ) trapped-ion devices are subject to errors which can significantly impact the accuracy of calculations if left unchecked. A form of error mitigation called zero noise extrapolation (ZNE) can decrease an algorithm's sensitivity to these errors without increasing the number of required qubits. Here, we explore different methods for integrating this error mitigation technique into the Variational Quantum Eigensolver (VQE) algorithm for calculating the ground state of the HeH+ molecule at 0.8 Angstrom in the presence of realistic noise. Using the Quantum Scientific Computing Open User Testbed (QSCOUT) trapped-ion device, we test three methods of scaling noise for extrapolation: time-stretching the two-qubit gates, scaling the sideband amplitude parameter, and inserting two-qubit gate identity operations into the ansatz circuit. We find time-stretching and sideband amplitude scaling fail to scale the noise on our particular hardware in a way that can be directly extrapolated to zero noise. Scaling our noise with global gate identity insertions and extrapolating after variational optimization, we achieve an estimate of the ground state energy within -0.004 +- 0.04 Hartree; outside chemical accuracy, but greatly improved over our non-error-mitigated estimate with error 0.127 +- 0.008 Hartree. Our results show that the efficacy of this error mitigation technique depends on choosing the correct implementation for a given device architecture.
description: 21 pages, 13 figures
Doping the Mott insulating state of the triangular-lattice Hubbard model reveals the Sordi transition
Creators: name: Downey, P. -O.
name: Gingras, O.
name: Hébert, C. -D.
name: Charlebois, M.
name: Tremblay, A. -M. S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: It has been reported that upon doping a Mott insulator, there can be a crossover to a pseudogaped metallic phase followed by a first-order transition to another thermodynamically stable metallic phase. We call this first-order metal-metal transition the Sordi transition. It was argued that the initial reports of Sordi transitions at finite temperature could be explained by finite size effects and biases related to the model and method used. In this work, we report the Sordi transition on larger clusters at finite temperature on a triangular lattice, where long-range antiferromagnetic fluctuations are frustrated, using a different method, the dynamical cluster approximation instead of the cellular dynamical mean-field theory. This demonstrates that this first-order transition is a directly observable transition in doped Mott insulators and that it is relevant for experiments on candidate spin-liquid organic materials.
Decomposition of cholesterol by soil microorganisms
Creators: name: Aleksandrowicz, George Jerzy
Publisher: name: No Publisher Supplied
Year: 1953

description: New interest has been awakened in recent years in a group of compounds known as steroids and characterized by a common cyclopentanoperhydrophenanthrene nucleus. Summarizing, it can be said that microbial transformations of steroids are growing in importance, and at an increasing rate. Applications in the hormone field are numerous, but better starting materials must be found than the expensive ones used at present. The microbial degradation of cholesterol has been demonstrated as a possibility and a wide range of organisms has been employed. However, the rates of the reactions are very slow and the decomposition is complete to carbon dioxide with few intermediates isolated.
"... ein Clavier von besonderer Erfindung" - Der Bogenflügel von Johann Hohlfeld und seine Bedeutung für das Schaffen Carl Philipp Emanuel Bachs
Creators: name: Bärwald, Manuel
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Nach einleitender Einordnung ins Instrumentenbauwesen der zweiten Hälfte des 18. Jahrhunderts und besonders die Idee eines Streichklavieres, wird der Instrumentenbauer Johann Hohlfeld in den Mittelpunkt gerückt. Seine Instrumentenentwicklungen und darauf fußende zeitgenössische Urteile werden dargestellt, in Sonderheit der im Titel genannte Bogenflügel. Es werden Kompositionen für das Instrument von u. a. C. P. E. Bach sowie anknüpfende Entwicklungen des Instrumentenbaus angeführt.
description: Bach-Jahrbuch, Bd. 94 (2008)
Analisi delle modalità di intervento innovativo per la conoscenza del patrimonio museale attraverso la sperimentazione di nuove tecnologie in merito alle relazioni tra Napoli e Malta
Creators: name: Cantarella, Dario
Publisher: name: Universita degli studi di Salerno
Year: 2022
Subjects: subject: L-ART/02 STORIA DELL'ARTE MODERNA
subject: Ricontestualizzazione
subject: Tecnologie
subject: Musei

description: 2020 - 2021
description: This project is part of the “dottorati innovativi a caratterizzazione industriale” financed by the Ministry of Public Education with funds from the PON FSE- FESR Research and Innovation 2014-2020. It investigates the production of the Calabrian painter Mattia Preti (Taverna 1613 - Valletta 1699) divided between museums and churches in Naples and Valletta. The goal is to compensate for the separation that is created in the museum between the works and the context of origin, through the creation of a smartphone app that, used in the tour, is able to reconfigure the environment for which a certain work had been conceived. Through archival analysis and bibliographic study, it was possible not only to "relocate" the work in its original aesthetic frame, but also to highlight the different environmental factors that influenced its perception. Thanks to the lessons of prof. Sandro Debono, at the Department of Digital Arts, University of Malta, and the internship in Katatexilux, a company from Amelia (TR), specialized in virtual reconstructions of historical contexts, an app was prepared, in a demo version, which recontextualizes, through virtual reality and augmented reality, two paintings on which it was considered appropriate to focus. Both made by Preti during his stay in Naples, Madonna di Costantinopoli e santi and San Francesco di Paola were until 1980 in the church of Santa Maria della Verità, in Naples, when the earthquake of that year compromised its conservation. Hospitalized, therefore, in the National Museum of Capodimonte, in Naples, they have lost their cultural link with the chapels (Schipano and Rovegno) and, more generally, with the territory to which they belong, configured in the past in cultural superstructures that defined certain urban spaces. The union between historical-artistic research and the identification of suitable technologies to make the results usable required a broad approach and triggered a constant reflection on the relationship, still too little addressed, between the two disciplines. The app, entitled Mattia Preti ricontestualizzato, has already aroused the interest of the curators of the Capodimonte Museum. Its clear and simple internal organization, which allows its use by a wide audience, did not require a devaluation of the contents, rather an adaptation to the intrinsic mechanisms of computer processing. [edited by Author]
External field induced switching of tunneling current in the coupled quantum dots
Creators: name: Mantsevich, V. N.
name: Maslova, N. S.
name: Arseyev, P. I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigated the tunneling current peculiarities in the system of two coupled by means of the external field quantum dots (QDs) weakly connected to the electrodes in the presence of Coulomb correlations. It was found that tuning of the external field frequency induces fast multiple tunneling current switching and leads to the negative tunneling conductivity. Special role of multi-electrons states was demonstrated. Moreover we revealed conditions for bistable behavior of the tunneling current in the coupled QDs with Coulomb correlations.
description: 6 pages, 2 figures. arXiv admin note: text overlap with arXiv:1206.5714, arXiv:1407.0575
Black New Ark v.2 no.11
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 1973

description: The publication month for this issue appears in Swahili. This issue of Black New Ark volume 2, number 11, has a publication date of October 1973. Contributions of news articles, essays, illustrations, photographs, or advertisements are attributed to Ndugu Shaka, Cheo Hekima, Anani Dzidzienyo, Cheo Hekima, Obalaji Baraka, and Imamu Amiri Baraka.
Response from Stan Graves to Cornelius Allen, Light Fixtures and Ceiling Tile for Buildings 122 and 124, Fort Sam Houston, Texas
Creators: name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1987
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Building 122
valueUri: https://core.tdar.org/browse/other-keyword/146279/building-122
subject: Building 124
valueUri: https://core.tdar.org/browse/other-keyword/146280/building-124
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: A letter from the Texas Historical Commission in response to a proposed project request by Fort Sam Houston concerning the replacement of light fixtures and ceiling tile for buildings 122 and 124. The Commission has deemed the update and its materials as acceptable. Carbon copied to this letter is Dick Strimel.
Factors affecting ubiquitous learning from the viewpoint of language teachers: a case study from Vietnam
Creators: name: Dang, Xuan T
name: Nicholas, Howard
name: Lewis, Ramon
Publisher: name: La Trobe
Year: 2023

description: Vietnam is promoting the use of information and communications technology (ICT) in education with a view to improving the quality of teaching and moving towards ubiquitous learning. Many ICT tools and applications have been deployed at universities in Vietnam. However, availability of technology is not synonymous with the use of technology. In the area of foreign language teaching and learning, little is known about what could possibly enable or hinder teachers’ use of ICT. The aim of this paper is to present the results of an exploratory and empirical study regarding the use of ICT in modern language teaching at tertiary level in Vietnam. Our case is Hanoi University (HANU), one of the leading universities in the North of Vietnam. A mixed methods approach was applied with 222 survey participants and 43 interviewees including senior management, classroom teachers and ICT experts at HANU. Their responses have shed light on teachers’ perceived enabling and inhibiting factors in relation to ICT use in ubiquitous teaching and learning. It is hoped that teachers and university leaders from other countries may find the case study useful for their better integration of ICT in their classrooms and institutions for ubiquitous learning in the future.
Black hole emission of vector particles in (1+1) dimensions
Creators: name: Kruglov, S. I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the radiation of spin-1 particles by black holes in (1+1) dimensions within the Proca equation. The process is considered as quantum tunnelling of bosons through an event horizon. It is shown that the emission temperature for the Schwarzschild background geometry is the same as the Hawking temperature corresponding to scalar particles emission. We also obtain the radiation temperatures for the de Sitter, Rindler and Schwarzschild-de Sitter space-times. In a particular case when two horizons in Schwarzschild-de Sitter space-time coincides the Nariai temperature is recovered. The thermodynamical entropy of a black hole is calculated for Schwarzschild-de Sitter space-time having two horizons.
description: 13 pages, 2 figures
Stochastic $p$th root approximation of a stochastic matrix: A Riemannian optimization approach
Creators: name: Durastante, Fabio
name: Meini, Beatrice
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65C40, 65K05, 53B21, 65F60

description: We propose two approaches, based on Riemannian optimization, for computing a stochastic approximation of the $p$th root of a stochastic matrix $A$. In the first approach, the approximation is found in the Riemannian manifold of positive stochastic matrices. In the second approach, we introduce the Riemannian manifold of positive stochastic matrices sharing with $A$ the Perron eigenvector and we compute the approximation of the $p$th root of $A$ in such a manifold. This way, differently from the available methods based on constrained optimization, $A$ and its $p$th root approximation share the Perron eigenvector. Such a property is relevant, from a modelling point of view, in the embedding problem for Markov chains. The extended numerical experimentation shows that, in the first approach, the Riemannian optimization methods are generally faster and more accurate than the available methods based on constrained optimization. In the second approach, even though the stochastic approximation of the $p$th root is found in a smaller set, the approximation is generally more accurate than the one obtained by standard constrained optimization.
Spontaneous supersymmetry breaking in the two-dimensional N=1 Wess-Zumino model
Creators: name: Steinhauer, Kyle
name: Wenger, Urs
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the phase diagram of the two-dimensional N=1 Wess-Zumino model on the lattice using Wilson fermions and the fermion loop formulation. We give a complete nonperturbative determination of the ground state structure in the continuum and infinite volume limit. We also present a determination of the particle spectrum in the supersymmetric phase, in the supersymmetry broken phase and across the supersymmetry breaking phase transition. In the supersymmetry broken phase we observe the emergence of the Goldstino particle.
description: 5 pages, 5 figures
"Die 6 Choräle kosten nichts" -Zur Bewertung des Originaldrucks der "Schübler-Choräle"
Creators: name: Schulze, Hans-Joachim
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Der Beitrag befasst sich mit verschiedenen Aspekten rund um die Zusammenstellung und Veröffentlichung der sechs Choräle BWV 645-650 und hinterfragt unter anderem, wie stark Johann Sebastian Bachs eigenes Interesse an deren Publikation gewesen sein mag.
description: Bach-Jahrbuch, Bd. 94 (2008)
Postselected communication over quantum channels
Creators: name: Ji, Kaiyuan
name: Regula, Bartosz
name: Wilde, Mark M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The single-letter characterisation of the entanglement-assisted capacity of a quantum channel is one of the seminal results of quantum information theory. In this paper, we consider a modified communication scenario in which the receiver is allowed an additional, `inconclusive' measurement outcome, and we employ an error metric given by the error probability in decoding the transmitted message conditioned on a conclusive measurement result. We call this setting postselected communication and the ensuing highest achievable rates the postselected capacities. Here, we provide a precise single-letter characterisation of postselected capacities in the setting of entanglement assistance as well as the more general nonsignalling assistance, establishing that they are both equal to the channel's projective mutual information -- a variant of mutual information based on the Hilbert projective metric. We do so by establishing bounds on the one-shot postselected capacities, with a lower bound that makes use of a postselected teleportation-based protocol and an upper bound in terms of the postselected hypothesis testing relative entropy. As such, we obtain fundamental limits on a channel's ability to communicate even when this strong resource of postselection is allowed, implying limitations on communication even when the receiver has access to postselected closed timelike curves.
description: 38 pages, 5 figures, published in International Journal of Quantum Information (IJQI) as part of a special issue dedicated to Alexander S. Holevo on the occasion of his 80th birthday
Neue Erkenntnisse zur Bach-Überlieferung in Erfurt im frühen 19. Jahrhundert
Creators: name: Brück, Helga
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Der Beitrag teilt Auszüge aus Tagebüchern Heinrich Wilhelm Stolzes mit, die von der Kenntnis Bach’scher Werke berichten.
description: Bach-Jahrbuch, Bd. 94 (2008)
Response from Joseph Logan to Curtis Tunnell, Interior Rehabilitation of Hangar 12, Randolph Air Force Base, Texas
Creators: name: Logan, Joseph M.
Publisher: name: Department of the Air Force, Randolph Air Force Base
Year: 1992
Subjects: subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Military Structure
valueUri: https://core.tdar.org/browse/site-type/322/military-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Hangar 13
valueUri: https://core.tdar.org/browse/other-keyword/158749/hangar-13
subject: Hangar 12
valueUri: https://core.tdar.org/browse/other-keyword/158750/hangar-12
subject: Hangar 64
valueUri: https://core.tdar.org/browse/other-keyword/158727/hangar-64
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Randolph Air Force Base is writing the Texas Historical Commission to add an additional undertaking to the list of projects approved for Hangar 12. The information concerns the installation of a double set of glass front doors at the north and south ends of the west side of the Hangar. This letter is part of a group of correspondence concerning rehabilitation projects for Hangars 12, 13, and 64 at Randolph Air Force Base, Texas. Proposed projects includes new entrance canopies, replacement of external doors, and interior rehabilitation.
The effect of the weight of the seed on the growth of the plant
Creators: name: Schmidt, David
Publisher: name: No Publisher Supplied
Year: 1923

description: The object of this paper is to present the subject of the initial plant food in the seed, and its effect upon plant growth and crop production, and to impress the fact of resulting differences as conveyed by the data. Other conditions, other influences upon the growth of the plant, are neither overlooked nor disregarded, although only the question of initial reserve of available plant food is dealt with here.
Ein Passionsoratorium von Carl Heinrich Graun in der Notenbibliothek Johann Sebastian Bachs?
Creators: name: Steffen, Klaus
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Der Beitrag widerlegt die These, ein in Berlin verwahrter Stimmensatz zu Grauns „großer Passion“ Kommt her und schaut GraunWV B:VII:5 enthalte handschriftliche Eintragungen Johann Sebastian Bachs und sei möglicherweise seiner Notenbibliothek zuzuordnen. Stattdessen wird Johann Friedrich Doles mit dem Material in Verbindung gebracht.
description: Bach-Jahrbuch, Bd. 94 (2008)
Response from F. Lawerence Oaks to John Brenneman, Continued Project Review to Replace Windows in Building 2792, Fort Sam Houston, Texas
Creators: name: F. Lawrence Oaks
Publisher: name: Texas Historical Commission
Year: 2000
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Building 2792
valueUri: https://core.tdar.org/browse/other-keyword/150031/building-2792
subject: Window Replacement
valueUri: https://core.tdar.org/browse/other-keyword/121544/window-replacement
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Fort Sam Houston submitted a follow-up project review to the Texas Historical Commission for the replacement of windows in Building 2792. This letter serves as comment on the proposed undertaking from the State Historic Preservation Officer, the Executive Director of the Texas Historical Commission. This letter states that the documentation submitted is insufficient for concurrence by the Commission with Fort Sam Houston's determination.
Vier unbekannte Textdrucke zu Leipziger Ratswahlkantaten aus den Jahren 1751-1754. Überlegungen zum Repertoire der Amtszeit Gottlob Harrers
Creators: name: Heinze, Frauke
Publisher: name: Bach-Jahrbuch
Year: 2018

description: In ausführlichen tabellarischen Vergleichen werden Bezüge zwischen erhaltenen Textheften zu Leipziger Ratswahlkantaten der 1750er Jahre und Georg Philipp Telemanns Kantate Fürchtet Gott, ehret den König TVWV 1:573 sowie einer Textdichtung Erdmann Neumeisters von 1717 Auf eine Raths-Wahl beleuchtet und dies zu dem Repertoire unter J. S. Bachs Nachfolger Gottlob Harrer in Beziehung gesetzt.
description: Bach-Jahrbuch, Bd. 94 (2008)
Decay Law of Relativistic Particles: Quantum Theory Meets Special Relativity
Creators: name: Urbanowski, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Experiment (nucl-ex)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Late time properties of moving relativistic particles are studied. Within the proper relativistic treatment of the problem we find decay curves of such particles and we show that late time deviations of the survival probability of these particles from the exponential form of the decay law, that is the transition times region between exponential and non-expo\-nen\-tial form of the survival amplitude, occur much earlier than it follows from the classical standard approach boiled down to replace time $t$ by $t/γ_{L}$ (where $γ_{L}$ is the relativistic Lorentz factor) in the formula for the survival probability. The consequence is that fluctuations of the corresponding decay curves can appear much earlier and much more unstable particles have a chance to survive up to these times or later. It is also shown that fluctuations of the instantaneous energy of the moving unstable particles has a similar form as the fluctuations in the particle rest frame but they are seen by the observer in his rest system much earlier than one could expect replacing $t$ by $t/γ_{L}$ in the corresponding expressions for this energy and that the amplitude of these fluctuations can be even larger than it follows from the standard approach. All these effects seems to be important when interpreting some accelerator experiments with high energy unstable particles and the like (possible connections of these effects with GSI anomaly are analyzed) and some results of astrophysical observations.
description: 15 pages, 3 figures
Carl Philipp Emanuel Bach und Kronprinz Friedrich in Preußen: Die erste Begegnung?
Creators: name: Pegah, Rashid-S.
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Im Beitrag wird ein kürzlich aufgefundenes Dokument zu den Frankfurter Jahren C. P. E. Bachs vorgestellt: Im Briefwechsel Kronprinz Friedrichs von Preußen mit seiner Schwester Friderique Sophie Wilhelmine schildert der Prinz eine Begegnung mit einem „Sohn von Bach“.
description: Bach-Jahrbuch, Bd. 94 (2008)
Johann Sebastian Bach und die Theorbe
Creators: name: Ahrens, Christian
Publisher: name: Bach-Jahrbuch
Year: 2018

description: In Anknüpfung an seinen Beitrag Neue Quellen zu J. S. Bachs Beziehungen nach Gotha (BJ 2007, S. 45-60) wird ein neues Indiz zur Stützung seiner dort geäußerten These, die Verwendung der Theorbe in Aufführungen Bachs betreffend, vorgestellt.
description: Bach-Jahrbuch, Bd. 94 (2008)
Experimental studies on sulfur oxidation by micro-organisms
Creators: name: Rudolfs, Willem
Publisher: name: No Publisher Supplied
Year: 1921

description: The work undertaken in this thesis dealt mainly with the problem of how to reduce the first part of the incubation period in soil-rockphosphate-sulfur mixtures before the phosphorus becomes available when a calcareous, slightly alkaline soil is used, and of reducing the amount of such a soil in the mixture to a point which would make the process practical in the factory.
Computational complexity of counting coincidences
Creators: name: Chan, Swee Hong
name: Pak, Igor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: Computational Complexity (cs.CC)
subject: Computational Geometry (cs.CG)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05A20, 68R05 (Primary) 05A16, 05B45, 05C30, 05E10, 06A07, 52C20, 68Q15, 68Q17 (Secondary)

description: Can you decide if there is a coincidence in the numbers counting two different combinatorial objects? For example, can you decide if two regions in $\mathbb{R}^3$ have the same number of domino tilings? There are two versions of the problem, with $2\times 1 \times 1$ and $2\times 2 \times 1$ boxes. We prove that in both cases the coincidence problem is not in the polynomial hierarchy unless the polynomial hierarchy collapses to a finite level. While the conclusions are the same, the proofs are notably different and generalize in different directions.
 We proceed to explore the coincidence problem for counting independent sets and matchings in graphs, matroid bases, order ideals and linear extensions in posets, permutation patterns, and the Kronecker coefficients. We also make a number of conjectures for counting other combinatorial objects such as plane triangulations, contingency tables, standard Young tableaux, reduced factorizations and the Littlewood--Richardson coefficients.
description: 24 pages, 6 figures. New references added. To appear in Theoret. Comput. Sci
Carl Philipp Emanuel Bach und Adam Friedrich Oeser
Creators: name: Wiermann, Barbara
Publisher: name: Bach-Jahrbuch
Year: 2018

description: In Ergänzung zu Arbeiten zu Johann Sebastian Bach d. J., Carl Philipp Emanuel Bach und Adam Friedrich Oeser wird ein bisher unbekannter Brief des letztgenannten ausgewertet, aus dem sich auf eine persönliche Begegnung mit C. P. E. Bach schließen lässt. Vergleiche auch: Maria Hübner: Der Zeichner Johann Sebastian Bach d. J. (1748 bis 1778). Zu seinem 250. Geburtstag. BJ 1998, S. 187-200 Maria Hübner: Ein Brief von Carl Philipp Emanuel Bach an Adam Friedrich Oeser. BJ 2007, S. 243-254
description: Bach-Jahrbuch, Bd. 94 (2008)
$DK$ and $D^* K$ scattering near threshold
Creators: name: Lang, C. B.
name: Leskovec, Luka
name: Mohler, Daniel
name: Prelovsek, Sasa
name: Woloshyn, R. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the three $D_s$ quantum channels $J^P = 0^+$, $1^+$ and $2^+$ where experiments have identified the charm-strange states $D^*_{s0} (2317)$, $D_{s1}(2460)$, $D_{s1}(2536)$ near the $DK$ and $D^*K$ thresholds, and $D^*_{s2}(2573)$. We consider correlation functions for sets of $\overline q q$ operators and, for $J^P = 0^+$, $1^+$, also the $DK$ and $D^*K$ meson-meson interpolators and determine for these cases values of the elastic scattering amplitude. Constructing the full set of correlators requires propagators which connect any pair of lattice sites. For one ensemble of gauge configurations ($32^3\times 64$, $m_π\approx 156$ MeV) a stochastic distillation variant is employed and for another ensemble ($16^3\times 32$, $m_π\approx 266$ MeV) we use the full distillation method. Both, $D^*_{s0} (2317)$ and $D_{s1}(2460)$, are found as bound states below threshold, whereas $D_{s1}(2536)$, and $D^*_{s2}(2573)$ are identified as narrow resonances close to the experimental masses.
description: 7 pages, 3 figures; Contribution to the 32nd International Symposium on Lattice Field Theory, 23-28 June, 2014, Columbia University New York, NY
Bachs Schwester
Creators: name: Melamed, Daniel R.
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Ausgehend von einer fehlerhaften Information im Eintrag über Barthold Heinrich Brockes im New Grove Dictionary von 2001 wird einerseits versucht, das zugrundeliegende Missverständnis aufzulösen, andererseits ein Bogen zum Verhältnis Johann Sebastian Bachs zu Georg Friedrich Händel geschlagen.
description: Bach-Jahrbuch, Bd. 94 (2008)
Letter from Stan Graves to Richard Strimel, Blood Donor Center New Design, Fort Sam Houston, Texas
Creators: name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1991
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Fort Sam Houston Conservation District
valueUri: https://core.tdar.org/browse/geographic-keyword/82956/fort-sam-houston-conservation-district
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Building Materials
valueUri: https://core.tdar.org/browse/material-type/8/building-materials
subject: Blood Donor Center
valueUri: https://core.tdar.org/browse/other-keyword/156769/blood-donor-center
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Documentation of multiple site meetings and brick samples for the proposed design for the new Blood Donor Center, to be located outside of the Conservation District at Fort Sam Houston.
A novel analysis of utility in privacy pipelines, using Kronecker products and quantitative information flow
Creators: name: Alvim, Mário S.
name: Fernandes, Natasha
name: McIver, Annabelle
name: Morgan, Carroll
name: Nunes, Gabriel H.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We combine Kronecker products, and quantitative information flow, to give a novel formal analysis for the fine-grained verification of utility in complex privacy pipelines. The combination explains a surprising anomaly in the behaviour of utility of privacy-preserving pipelines -- that sometimes a reduction in privacy results also in a decrease in utility. We use the standard measure of utility for Bayesian analysis, introduced by Ghosh at al., to produce tractable and rigorous proofs of the fine-grained statistical behaviour leading to the anomaly. More generally, we offer the prospect of formal-analysis tools for utility that complement extant formal analyses of privacy. We demonstrate our results on a number of common privacy-preserving designs.
Synthetic observations of wave propagation in a sunspot umbra
Creators: name: Felipe, T.
name: Socas-Navarro, H.
name: Khomenko, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Spectropolarimetric temporal series from Fe I $λ$ 6301.5 Å and Ca II infrared triplet lines are obtained by applying the Stokes synthesis code NICOLE to a numerical simulation of wave propagation in a sunspot umbra from MANCHA code. The analysis of the phase difference between Doppler velocity and intensity core oscillations of the Fe I $λ$ 6301.5 Å line reveals that variations in the intensity are produced by opacity fluctuations rather than intrinsic temperature oscillations, except for frequencies between 5 and 6.5 mHz. On the other hand, the photospheric magnetic field retrieved from the weak field approximation provides the intrinsic magnetic field oscillations associated to wave propagation. Our results suggest that this is due to the low magnetic field gradient of our sunspot model. The Stokes parameters of the chromospheric Ca II infrared triplet lines show striking variations as shock waves travel through the formation height of the lines, including emission self-reversals in the line core and highly abnormal Stokes V profiles. Magnetic field oscillations inferred from the Ca II infrared lines using the weak field approximation appear to be related with the magnetic field strength variation between the photosphere and the chromosphere.
description: Accepted for publication in The Astrophysical Journal
Preservation Brief 35, Understanding Old Buildings: The Process of Architectural Investigation
Creators: name: MacDonald, Travis C.
Publisher: name: Technical Preservation Services, National Park Service
Year: 2004
Subjects: subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Conservation
valueUri: https://core.tdar.org/browse/other-keyword/1819/conservation
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Methodology, Theory, or Synthesis
valueUri: https://core.tdar.org/browse/investigation-type/6/methodology-theory-or-synthesis
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management
subject: Site Stabilization
valueUri: https://core.tdar.org/browse/investigation-type/11/site-stabilization

description: This is number thirty-five of 42 preservation briefs prepared by the Technical Preservation Services of the National Park Service. This brief focuses on the understanding of old buildings, specifically the process of architectural investigation. To date, very little has been written for the layman on the subject of architectural investigation. This Preservation Brief thus addresses the often complex investigative process in broad, easy-to-understand terminology. The logical sequence of planning, investigation and analysis presented in this Brief is applicable to all buildings, geographic locations, periods, and construction types. It is neither a "how to" nor an exhaustive study on techniques or methodologies; rather, it serves to underscore the need for meticulous planning prior to work on our irreplaceable cultural resources.
Impact of sulfate pollution on anaerobic biogeochemical cycles in a wetland sediment
Creators: name: Baldwin, Darren S
name: Mitchell, Alison
Publisher: name: La Trobe
Year: 2023

description:

MDFRC item.

The impact of sulfate pollution is increasingly being seen as an issue in the management of inland aquatic ecosystems. In this study we use sediment slurry experiments to explore the addition of sulfate, with or without added carbon, on the anaerobic biogeochemical cycles in a wetland sediment that previously had not been exposed to high levels of sulfate. Specifically we looked at the cycling of S (sulfate, dissolved and particulate sulfide e the latter measured as acid volatile sulfide; AVS), C (carbon dioxide, bicarbonate, methane and the short chain volatile fatty acids formate, acetate, butyrate and propionate), N (dinitrogen, ammonium, nitrate and nitrite) and redox active metals (Fe(II) and Mn(II)). Sulfate had the largest effects on the cycling of S and C. All the added S at lower loadings were converted to AVS over the course of the experiment (30 days). At the highest loading (8 mmol) less than 50% of consumed S was converted to AVS, however this is believed to be a kinetic effect. Although sulfate reduction was occurring in sediments with added sulfate, dissolved sulfide concentrations remained low throughout the study. Sulfate addition affected methanogenesis. In the absence of added carbon, addition of sulfate, even at a loading of 1 mmol, resulted in a halving of methane formation. The initial rate of formation of methane was not affected by sulfate if additional carbon was added to the sediment. However, there was evidence for anaerobic methane oxidation in those sediments with added sulfate and carbon, but not in those sediments treated only with carbon. Surprisingly, sulfate addition had little apparent impact on N dynamics; previous studies have shown that sulfide can inhibit denitrification and stimulate dissimilatory nitrate reduction to ammonia. We propose that because most of the reduced sulfur was in particulate form, levels of dissolved sulfide were too low to interfere with the N cycle.
On effective models of regular black holes inspired by higher-derivative and nonlocal gravity
Creators: name: Netto, Tibério de Paula
name: Giacchini, Breno L.
name: Burzillà, Nicolò
name: Modesto, Leonardo
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we study static spherically symmetric solutions of effective field equations related to local and nonlocal higher-derivative gravity models, based on their associated effective delta sources. This procedure has been applied to generate modifications of the Schwarzschild geometry in several contexts (e.g., modified gravity, string theory, noncommutative geometry, generalized uncertainty principle scenarios), but a general analysis of the possible equations of state and their influence on the solutions was still lacking. Here, we aim to fill this gap in the literature and investigate whether these metrics might be able to reproduce features of the solutions of higher-derivative gravity models. In particular, we present an equation of state such that the solution matches the Newtonian-limit one in both regimes of large and small $r$. A significant part of the work is dedicated to studying the curvature regularity of the solutions and the comparison with the linearized solutions. Explicit metrics are presented for effective sources originating from local and nonlocal models. The results obtained here might be regarded as possible links between the previous research on linearized higher-derivative gravity and the solutions of the nonlinear complete field equations, which remain unknown at the moment.
description: 33 pages, 8 figures. Extended discussion, references added; matches the published version
National Register of Historic Places Nomination, Brooke Army Medical Center (Building 1000), Fort Sam Houston Military Reservation
Creators: name: Clow, Victoria Green
Publisher: name: Geo-Marine, Inc.
Year: 2000
Subjects: subject: Fort Worth District
valueUri: https://core.tdar.org/browse/geographic-keyword/82945/fort-worth-district
subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/348/texas-state-territory
subject: Brooke Army Medical Center
valueUri: https://core.tdar.org/browse/geographic-keyword/82539/brooke-army-medical-center
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Military Structure
valueUri: https://core.tdar.org/browse/site-type/322/military-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Hospital
valueUri: https://core.tdar.org/browse/other-keyword/134162/hospital
subject: Building 1000
valueUri: https://core.tdar.org/browse/other-keyword/147223/building-1000
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Historic Background Research
valueUri: https://core.tdar.org/browse/investigation-type/18/historic-background-research
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: This is a National Park Service application for inclusion to the National Register of Historic Places for Building 1000, Fort Sam Houston. The building is identified as Brooke General Hospital and Convalescent Center.
Neue Erkenntnisse zur Entstehungsgeschichte der Kantaten BWV 34 und 34a
Creators: name: Schabalina, Tatjana
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Aufgrund neuerer Textfunde erfolgt eine Vordatierung der Kantate O ewiges Feuer! o Ursprung der Liebe BWV 34 um mindestens 20 Jahre (spätestens 1727). Ein eingehender Vergleich schildert die Abweichungen von BWV 34 zur vermutlichen Parodievorlage 34a. Aufgrund der neuen zeitlichen Bestimmung und der Befunde des Vergleichs wird die These vertreten, beide Werke gingen auf eine gemeinsame, verschollene Vorlage zurück. Erwähnte Artikel: Peter Wollny: Neue Bach-Funde. BJ 1997, S.7-50 Peter Wollny: Nachbemerkung zu "Neue Bach-Funde". BJ 1998, S. 167-170 Tatjana Schabalina: "Texte zur Music" in Sankt Petersburg. Neue Quellen zur Leipziger Musikgeschichte sowie zur Kompositions- und Aufführungstätigkeit Johann Sebastian Bachs. BJ 2008, S. 33-98
description: Bach-Jahrbuch, Bd. 96 (2010)
Black New Ark v.2 no.12
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 1973

description: The publication month for this issue appears in Swahili. This issue of Black New Ark volume 2, number 12, has a publication date of November 1973 and is the first part of a two-part edition. Contributions of news articles, essays, illustrations, photographs, or advertisements are attributed to Cleve Washington, General Yakubu Gowon, Amilcar Cabral, Josina Machel, and Imamu Amiri Baraka.
On the limitations of the semi-classical picture in high harmonic generation
Creators: name: Stammer, Philipp
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The recent progress in the quantum optical formulation of the process of high harmonic generation has reached a point where the successful semi-classical model shows its limitations. So far the light source which drives the process was considered to be provided by a laser, in agreement with the classical picture. However, quantum optics allows to consider light fields beyond the classical realm, such as bright squeezed vacuum of photon number states. Both field states have vanishing mean electric field amplitudes, but can still lead to the generation of high harmonic radiation for sufficiently high intensities. This poses new questions about the range of validity of the semi-classical picture, and allows to extend the domain of questions which could possibly be asked.
description: 3 pages, slightly extended version
Johann Adolph Scheibes Bach-Kritik. Hintergründe und Schauplätze einer musikalischen Kontroverse
Creators: name: Maul, Michael
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Der Artikel bemängelt die einseitige Fokussierung auf Scheibes Bach-Kritik in dessen 1737 veröffentlichten Sendschreiben. Um dem Eindruck entgegenzuwirken, dieses richte sich schwerpunktmäßig gegen J. S. Bach, wird von einer neu aufgefundenen Quelle berichtet: In einem in Jena verwahrten Exemplar des Scheibe-Textes wurden die im Druck ausgelassenen Namen und Wirkungsstätten anderer kritisierter Komponisten vom Weimarer Stadtorganisten Johann Gottfried Walther handschriftlich eingefügt. Es sind dies Gottfried Heinrich Stölzel, Johann Theodor Roemhildt, Christoph Förster, Carl Gotthelf Gerlach, Johann Schneider, Johann Gottlieb Görner, Johann Sebastian Bach, Giuseppe Antonio Paganelli und Conrad Friedrich Hurlebusch. Nach Thesen zur Provenienz der Quelle gibt der Artikel eine kurze Zusammenfassung des Textes (vollständige Wiedergabe am Schluss des Beitrages) und fragt nach möglichen Motiven Scheibes für die Abfassung desselben. Dabei werden umfangreiche Passagen aus weiteren Texten Scheibes zitiert und als Grundlage der Ausführungen verwendet. Erwähnte Artikel: Günther Wagner: J. A. Scheibe - J. S. Bach: Versuch einer Bewertung. BJ 1982, S. 83-50 Hans-Joachim Schulze: Studenten als Bachs Helfer bei der Leipziger Kirchenmusik. BJ 1984, S. 45-52
description: Bach-Jahrbuch, Bd. 96 (2010)
Modeling Variants of Automotive Systems using Views
Creators: name: Grönninger, Hans
name: Krahn, Holger
name: Pinkernell, Claas
name: Rumpe, Bernhar
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This paper presents an approach of modeling variability of automotive system architectures using function nets, views and feature diagrams. A function net models an architecture hierarchically and views are used to omit parts of such a model to focus on certain functionalities. In combination with feature diagrams that describe valid variants, the concepts of feature and variant views are introduced to model architectural variants. The relationship between views, variants and the underlying complete architectural model is discussed. Methodological aspects that come along with this approach are considered.
description: 14 pages, 9 figures