cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hochshild cohomology of the associative conformal algebra Cend_{1,x}
Creators: name: Kozlov, Roman
Publisher: name: arXiv
Year: 2017
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: It is established in this work that second Hochshild cohomology group of the associative conformal algebra Cend_{1,x} is zero. As a corollary, this algebra split off in each extension with a nilpotent kernel. Key words: associative conformal algebra, splitting off radical, Hochshild cohomology.
Talking about Probability, Inference and Decisions. Part 1: The Witches of Bayes
Creators: name: D'Agostini, Giulio
name: Cifani, Noemi
name: Gilardi, Alba
Publisher: name: arXiv
Year: 2018
Subjects: subject: History and Overview (math.HO)
subject: Probability (math.PR)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In October 2017 the Italian National Institute of Statistics (ISTAT), Italy's body for official statistics, has published the book of fairy tales Le streghe di Bayes (The witches of Bayes) written by ISTAT staff members with the commendable aim of introducing statistical and probabilistic reasoning to children. In this paper the fairy tale which gives the name to the book is analyzed in a dialog between three teachers with different background and expertise. The outcomes are definitively discouraging, especially when the story is compared to the appendix of the book, in which the teaching power of every story is indeed explained (as a matter of fact, without the appendix the fairy tale of the witches seemed to be written with the purpose of make the 'Bayesians', meant as the villagers from 'Bayes', ridiculous). In fact the fairy tale of the witches does not contain any Bayesian reasoning, the suggested decision strategy is simply wrong and the story does not even seem to be easily modifiable (besides the trivial correction of the decision strategy) in order to make it usable as a teaching tool. As it happens in real dialogues, besides the fairy tale in question, the dialogue touches several issues somehow related to the story and concerning probability, inference, prediction and decision making. The present paper is an indirect response to the invitation by the ISBA bulletin to comment on the fairy tale.
description: 48 pages, 14 figures, in Italian, be published in Progetto Alice, Rivista di matematica e didattica
Reforming International Investment Law for Climate Change Goals
Creators: name: Brauch, Martin Dietrich
Publisher: name: Columbia University
Year: 2020
Subjects: Investments, Foreign (International law)
Climatic changes--International cooperation
Climatic changes--Government policy
Climate change mitigation

description: To achieve global climate change mitigation and adaptation goals under the Paris Agreement, international investment law should enable and expedite the transition away from high-emission investment toward low-emission investment. Existing international investment agreements (IIAs) providing for investor–state dispute settlement (ISDS) fail to advance climate goals and can effectively hinder states’ climate action. In this chapter, I discuss the implementation of two main policy options for climate-oriented reform of international investment law – termination of climate-unfriendly IIAs and negotiation of climate-friendly ones – at various governance levels, ranging from unilateral to multilateral action. Given the mounting risks and impacts of IIAs and ISDS, as well as the lack of evidence that they encourage foreign investment flows, terminating IIAs or withdrawing from them appears to be the most effective reform option. States seeking to conclude new climate-friendly treaties or to amend existing IIAs must ensure that the treaties legally distinguish between low-emission and high-emission investments. Climate-friendly IIAs must not hinder climate action (‘do no harm’), by denying treaty protections to high-emission investments, limiting their establishment and expansion, removing incentives such as fossil fuel subsidies, and requiring investments to be made responsibly. In addition, IIAs should leverage the potential contribution of foreign investment to climate goals (‘do good’), by incentivising, promoting, facilitating, and protecting low-emission investments only, and by supporting a just transition to a low-emission world. In line with broader efforts to reform international investment law, climate-aligned IIAs should also exclude or circumscribe controversial provisions (fair and equitable treatment [FET], legitimate expectations, indirect expropriation, and most-favoured-nation [MFN], to name a few), prohibit treaty-based challenges to climate policy measures, and deny substantive rights and access to treaty-based dispute settlement mechanisms to high-emission investments. Climate-unfriendly investors would instead need to rely on substantive rights and procedural avenues based on domestic laws.
Character formulae in category $\mathcal O$ for exceptional Lie superalgebra $G(3)$
Creators: name: Cheng, Shun-Jen
name: Wang, Weiqiang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B67

description: We classify the blocks, compute the Verma flags of tilting and projective modules in the BGG category $\mathcal O$ for the exceptional Lie superalgebra $G(3)$. The projective injective modules in $\mathcal O$ are classified. We also compute the Jordan-Hölder multiplicities of the Verma modules in $\mathcal O$.
description: 28 pages
Synthesis, Antibacterial and Cytotoxicity Assessment of Modified Uridine Molecules
Creators: name: Asraful Alam
name: Md Anowar Hosen
name: Islam, Mariam
name: Jannatul Ferdous
name: Fujii, Yuki
name: Ozeki, Yasuhiro
name: Sarkar M. A. Kawsar
Publisher: name: Zenodo
Year: 2021
Subjects: Uridine
synthesis
spectroscopic
antibacterial
cytotoxicity

description: Nucleoside derivatives continue to play an essential role in the treatment of various diseases, thus the consideration of the importance of nucleoside analogues, we have synthesized a series of nucleoside molecules i.e., uridine derivatives. The reaction to uridine molecules with N-acetylsulfanilyl chloride by the direct acylation yielded corresponding 5´-O-N-acetylsulfanilyluridine having ribose sugar moiety. To obtain newer products, the 5´-O-N-acetylsulfanilyluridine derivative was further transformed into a series of 2´,3´-di-O-acyl derivatives containing a wide variety of functionalities in a single molecular framework. The purity and structure of the obtained products have been confirmed by thin-layer chromatography, IR, 1H-NMR spectroscopy, physicochemical and elemental analysis. All the synthesized uridine derivatives were screened for their in vitro antibacterial activity against six human pathogenic bacterial strains. The study revealed that the selectively acylated derivatives 5´-O-N-acetylsulfanilyl-2´,3´-di-O-lauroyluridine (7) and 5´-O-N-acetylsulfanilyl-2´,3´-di-O-pivaloyluridine (10) showed the highest inhibition against Staphylococcus aureus and Bacillus cereus, respectively. Another noteworthy observation was that the uridine derivatives were found comparatively more effective against Gram-positive bacteria than that of Gram-negative bacteria. Besides, the test compounds were also tested for cytotoxicity by brine shrimp lethality bioassay and compounds showed different rate of mortality with different concentrations. Hence, these synthesized derivatives might be used as antibacterial agents and are promising drug candidates for future therapeutic uses.
Energy-chirp compensation of laser-driven ion beams enabled by structured targets
Creators: name: Gong, Z.
name: Bulanov, S. S.
name: Toncian, T.
name: Arefiev, A. V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We show using 3D simulations that the challenge of generating dense mono-energetic laser-driven ion beams with low angular divergence can be overcome by utilizing structured targets with a relativistically transparent channel and an overdense wall. In contrast to a uniform target that produces a chirped ion beam, the target structure facilitates formation of a dense electron bunch whose longitudinal electric field reverses the energy chirp. This approach works in conjunction with existing acceleration mechanisms, augmenting the ion spectra. For example, our 3D simulations predict a significant improvement for a 2 PW laser pulse with a peak intensity of $5 \times 10^{22}$ W/cm$^2$. The simulations show a mono-energetic proton peak in a highly desirable energy range of 200 MeV with an unprecedented charge of several nC and relatively low divergence that is below 10$^{\circ}$.
description: 6 pages, 5 figures
RAD Jan 1st
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: Nikki Giovanni reads some of her poems, including "The Great Pax Whitie," "Nikki Rosa," "Black Power," "Alabama Poem," "Woman Poem," "Balances," "On Hearing the Girl With the Flaxen Hair," and "The Genie in the Jar"
Low Energy Description of Quantum Gravity and Complementarity
Creators: name: Nomura, Yasunori
name: Varela, Jaime
name: Weinberg, Sean J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a framework in which low energy dynamics of quantum gravity is described preserving locality, and yet taking into account the effects that are not captured by the naive global spacetime picture, e.g. those associated with black hole complementarity. Our framework employs a "special relativistic" description of gravity; specifically, gravity is treated as a force measured by the observer tied to the coordinate system associated with a freely falling local Lorentz frame. We identify, in simple cases, regions of spacetime in which low energy local descriptions are applicable as viewed from the freely falling frame; in particular, we identify a surface called the gravitational observer horizon on which the local proper acceleration measured in the observer's coordinates becomes the cutoff (string) scale. This allows for separating between the "low-energy" local physics and "trans-Planckian" intrinsically quantum gravitational (stringy) physics, and allows for developing physical pictures of the origins of various effects. We explore the structure of the Hilbert space in which the proposed scheme is realized in a simple manner, and classify its elements according to certain horizons they possess. We also discuss implications of our framework on the firewall problem. We conjecture that the complementarity picture may persist due to properties of trans-Planckian physics.
description: 18 pages, 1 figure; matches published version
An open-source FEniCS implementation of a phase field fracture model for micropolar continua
Creators: name: Suh, Hyoung Suk
name: Sun, WaiChing
Publisher: name: Columbia University
Year: 2019
Subjects: Engineering
Micropolar elasticity
Fracture mechanics--Computer programs
Open source software

description: A micropolar phase field fracture model is implemented in an open source library FEniCS. This implementation is based on the theoretical study in Suh, H.S., O’Connor, D., and Sun, W. (under review) in which the resultant phase field model exhibits the consistent micropolar size effect in both elastic and damage regions identifiable via inverse problems for micropolar continua. By leveraging the automatic code generation technique in FEniCS, we provide a documentation of the source code expressed in a language very close to the mathematical expres- sions without comprising significant efficiency. This combination of generality and interpretability therefore enables us to provide a detailed walk-through that connects the implementation with the regularized damage theory for micropolar materials. By making the source code open source, the paper will provide an efficient development and educational tool for third-party verification and validation, as well as for future development of other higher order continuum damage models.
Römisches Siegesdenkmal in Beuel
Creators: name: Nissen, Heinrich
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 103 (1898): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Anfertigung von Kopien der mittelalterlichen Wandmalereien der Rheinprovinz
Creators: name: Clemen, Paul
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 103 (1898): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Phase diagram and superconductivity at 58.1 K in α-FeAs free SmFeAsO1-xFx
Creators: name: Fujioka, Masaya
name: Denholme, Saleem James
name: Ozaki, Toshinori
name: Okazaki, Hiroyuki
name: Deguchi, Keita
name: Demura, Satoshi
name: Hara, Hiroshi
name: Watanabe, Tohru
name: Takeya, Hiroyuki
name: Yamaguchi, Takahide
name: Kumakura, Hiroaki
name: Takano, Yoshihiko
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Phase diagram of SmFeAsO1-xFx in terms of x is exhibited in this study. SmFeAsO1-xFx from x = 0 to x = 0.3 were prepared by low temperature sintering with slow cooling. The low temperature sintering suppresses the formation of the amorphous FeAs, which is inevitably produced as an impurity by using high temperature sintering. Moreover, slow cooling is effective to obtain the high fluorine concentration. The compositional change from feedstock composition is quite small after this synthesis. We can reproducibly observe a record superconducting transition for an iron based superconductor at 58.1 K. This achievement of a high superconducting transition is due to the success in a large amount of fluorine substitution. A shrinking of the a lattice parameter caused by fluorine substitution is observed and the substitutional rate of fluorine changes at x =0.16.
description: 14 pages, 6 figures
Vier rheinische Münzfunde aus dem Mittelalter und der Neuzeit
Creators: name: Papen, Ferdinand-Gaudez Von
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 107 (1901): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
title: Real-Time Nowcasting of Nominal GDP Under Structural Breaks
Creators: name: Barnett, William A.
name: Chauvet, Marcelle
name: Leiva-Leon, Danilo
Publisher: name: Bank of Canada
Year: 2014

description: This paper provides a framework for the early assessment of current U.S. nominal GDP growth, which has been considered a potential new monetary policy target. The nowcasts are computed using the exact amount of information that policy-makers have available at the time predictions are made. However, real-time information arrives at different frequencies and asynchronously, which poses challenges of mixed frequencies, missing data and ragged edges.

description: Dans cette étude, les auteurs proposent un modèle qui permet d’évaluer de façon précoce la croissance actuelle du PIB nominal des États-Unis, laquelle est considérée comme une possible nouvelle cible de politique monétaire. Les prévisions concernant la période en cours sont établies à partir des mêmes informations dont disposent les décideurs à ce moment précis.
Die Wandgemälde aus dem Hause Glesch in Köln
Creators: name: Kisa, Anton
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 107 (1901): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
title: Μοντελοποίηση και προσομοίωση ενός ολοκληρωμένου μεταγωγέα Ethernet με κοινόχρηστη μνήμη και ουρές εξόδου
Creators: name: Παππάς Κωνσταντίνος
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
title: Predicting Financial Stress Events: A Signal Extraction Approach
Creators: name: Christensen, Ian
name: Li, Fuchun
Publisher: name: Bank of Canada
Year: 2014

description: The objective of this paper is to propose an early warning system that can predict the likelihood of the occurrence of financial stress events within a given period of time. To achieve this goal, the signal extraction approach proposed by Kaminsky, Lizondo and Reinhart (1998) is used to monitor the evolution of a number of economic indicators that tend to exhibit an unusual behaviour in the periods preceding a financial stress event.

description: Les auteurs proposent un système d’alerte avancée visant à déterminer la probabilité de survenue d’un épisode de tension financière à un moment donné. Pour ce faire, ils s’appuient sur le modèle de détection des signaux élaboré par Kaminsky, Lizondo et Reinhart (1998), qui leur permet de surveiller l’évolution de plusieurs indicateurs économiques susceptibles d’afficher un comportement inhabituel dans les périodes précédant un épisode de tension financière.
Local model of entangled photon experiments compatible with quantum predictions based on the reality of the vacuum fields
Creators: name: Santos, Emilio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Arguments are provided for the reality of the quantum vacuum fields. A polarization correlation experiment with two maximally entangled photons created by spontaneous parametric down-conversion is studied in the Weyl-Wigner formalism, that reproduces the quantum predictions. An interpretation is proposed in terms of stochastic processes assuming that the quantum vacuum fields are real. This proves that local realism is compatible with a violation of Bell inequalities, thus rebutting the claim that it has been refuted by experiments. Entanglement appears as a correlation between fluctuations of a signal field and vacuum fields. Key words; local realism, Bell inequalities, entangled photons, Weyl-Wigner, loopholes,vacuum fields
description: 20 pages. This is the final form of the article. The last section has been substantially modified
[Tafeln]
Creators: name: Redaktion, Die
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 107 (1901): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
title: Έλεγχος αποδοχής κλήσης για κίνηση πολυμέσων πάνω από ασύρματα κυψελωτά δίκτυα
Creators: name: Σωτηρόπουλος Ιωάννης
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
A simple representation of oscillation modes in stars: from mixed modes coupling to glitches
Creators: name: Pinçon, C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Analytical resonance conditions for oscillation modes in stars are very helpful both to predict and to examine their frequency spectra, as well as to make the link with their internal properties. In this short paper, we introduce a general quantization expression for oscillation modes accounting for the possible existence of a local sharp variation in the equilibrium structure, a so-called glitch. This representation is based on a direct adaptation of the progressive-wave picture of mixed modes proposed by Takata (2016b). In this formulation, a glitch turns out to be characterized by three parameters: its acoustic depth, the phase lags introduced after the wave reflection at the considered point, and a coupling factor. Such an expression has two main advantages. First, it can be easily applicable to a lot of different structural configurations. Second, it does not assume that the glitch is a small perturbation. Actually, we check that the obtained expression tends to the formulations previously derived when the glitch is weak. These research notes represent a preliminary step towards a more generalized description of multi-cavity oscillation modes, that was briefly addressed in the poster presented at the PHOST conference.
description: Published 11 December 2018, 4 pages
Einundvierzigste Plenarversammlung der historischen Kommission bei der kgl. bayr. Akademie der Wissenschaften. Bericht des Sekretariats
Creators: name: Heigel, Karl Theodor
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 106 (1901): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Constraining models with a large scalar multiplet
Creators: name: Earl, Kevin
name: Hartling, Katy
name: Logan, Heather E.
name: Pilkington, Terry
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Models in which the Higgs sector is extended by a single electroweak scalar multiplet X can possess an accidental global U(1) symmetry at the renormalizable level if X has isospin T greater or equal to 2. We show that all such U(1)-symmetric models are excluded by the interplay of the cosmological relic density of the lightest (neutral) component of X and its direct detection cross section via Z exchange. The sole exception is the T=2 multiplet, whose lightest member decays on a few-day to few-year timescale via a Planck-suppressed dimension-5 operator.
description: 20 pages, 5 figures. Additional constraints from Higgs decay, typos corrected in Eqs. 26 and A3, refs added, version accepted by PRD
[Tafeln]
Creators: name: Redaktion, Die
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 106 (1901): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Paris als Bühne für den Sozialistischen Realismus im Kalten Krieg? / Paris, scène du réalisme socialiste pendant la guerre froide?
Creators: name: Pichon-Bonin, Cécile
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2016

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2014/2015
Adults with intellectual disabilities as users of social media: A scoping review
Creators: name: Anderson, Sian
name: Araten-Bergman, Tal
name: Steel, Gillian
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 420318
subject: People with disability
classificationCode: 4203
subject: Health services and systems
classificationCode: 3904
subject: Specialist studies in education
classificationCode: 460608
subject: Mobile computing

description: Background: Social media use continues to grow, and it offers an important way for adults with intellectual disabilities to feel socially included and to communicate with others. Aim: This study aimed to establish the state of knowledge about social media use among adults with intellectual disabilities, their experiences and its impact. Method: A scoping review was conducted of peer-reviewed literature published between 2000 and 2021 that reported empirical research on social media use, experiences, training and outcomes for adults with intellectual disabilities. Findings: Adults with intellectual disabilities use social media platforms and experience a range of positive outcomes including feeling more included and valued. Some of the negative impacts included bullying and exploitation. The high cost of technology and some elements of design sometimes make social media inaccessible. Conclusions: The studies included provided evidence about the experience of using social media from adults with intellectual disabilities and some perspectives of family members and paid supporters. Future research is needed to examine effective approaches to overcoming barriers to access and ways to manage some of the negative impacts of engagement in order to inform policy and practice.
Ion temperature profile stiffness: non-linear gyrokinetic simulations and comparison with experiment
Creators: name: Citrin, J.
name: Jenko, F.
name: Mantica, P.
name: Told, D.
name: Bourdelle, C.
name: Dumont, R.
name: Garcia, J.
name: Haverkort, J. W.
name: Hogeweij, G. M. D.
name: Johnson, T.
name: Pueschel, M. J.
name: contributors, JET-EFDA
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recent experimental observations at JET show evidence of reduced ion temperature profile stiffness, hypothesised to be due to concomitant low magnetic shear (s) and significant toroidal rotational flow shear. Non-linear gyrokinetic simulations are performed, aiming to investigate the physical mechanism behind the observations. A comprehensive set of simulations are carried out, comparing the impact on the ion heat flux of various parameters that differ within the data-set. These parameters include q, s, rotation, effect of rotation on the magnetohydrodynamic (MHD) equilibrium, R/L_n, beta_e, Z_eff, and the fast particle content. The effect of toroidal flow shear itself is not predicted by the simulations to lead to a significant reduction in ion heat flux, due both to an insufficient magnitude of flow shear and significant parallel velocity gradient destabilisation. It is however found that non-linear electromagnetic effects due to both thermal and fast-particle pressure gradients, even at low beta_e, can significantly reduce the profile stiffness. A total of five discharges are examined, at both inner and outer radii. For all cases studied, the simulated and experimental ion heat flux values agree within reasonable variations of input parameters around the experimental uncertainties.
description: 33 pages, 25 figures, 4 tables. To be submitted to Nucl. Fusion
Status of nucleon structure calculations with 2+1 flavors of domain wall fermions
Creators: name: Lin, Meifeng
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report the status of our nucleon structure calculations with 2+1 flavors of domain wall fermions on the RBC-UKQCD $32^3\times64$ gauge ensembles with the Iwasaki+DSDR action. These ensembles have a fixed lattice scale of 1/a = 1.37 GeV, and two pion masses of about 170 and 250 MeV. Preliminary results for the isovector electromagnectic form factors and their corresponding root-mean-squared (r.m.s.) radii will be presented.
description: 7 pages. 4 figures. Proceedings of the XXX International Symposium on Lattice Field Theory (Lattice 2012) at Cairns, Australia, June 24-29, 2012. v2: typos corrected
title: Ανάπτυξη τρισδιάστατου παιχνιδιού ανοιχτού περιβάλλοντος με αυτονομία αντιπάλων
Creators: name: Φράγκος Νικόλαος
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
Direct and alignment-insensitive measurement of cantilever curvature
Creators: name: Hermans, Rodolfo I.
name: Bailey, Joe M.
name: Aeppli, Gabriel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We analytically derive and experimentally demonstrate a method for the simultaneous measurement of deflection for large arrays of cantilevers. The Fresnel diffraction patterns of a cantilever independently reveals tilt, curvature, cubic and higher order bending of the cantilever. It provides a calibrated absolute measurement of the polynomial coefficients describing the cantilever shape, without careful alignment and could be applied to several cantilevers simultaneously with no added complexity. We show that the method is easily implemented, works in both liquid mediums and in air, for a broad range of displacements and is especially suited to the requirements for multi-marker biosensors.
description: 5 Pages, 4 figures, letter format
title: Σχεδιασμός και ανάπτυξη συστήματος προσανατολισμού δύο αξόνων φωτοβολταϊκών πλαισίων με χρήση μικροελεγκτή
Creators: name: Καγκαράκης Κώστας
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
con:sensus. Kunstgeschichte und politische Ästhetik der »Gemeinschaft« / con:sensus. Histoire de l’art et esthétique politique de la «communauté»
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2017

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2015/2016
Phoretic Active Matter
Creators: name: Golestanian, Ramin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: These notes are an account of a series of lectures given at the Les Houches Summer School "Active Matter and Non-equilibrium Statistical Physics" during August and September 2018. The lectures can be viewed online at [http://www.ds.mpg.de/lmp/lectures/les-houches-2018].
description: 51 pages
An Evaluation of Methods for Cooling Potatoes in Long Island Storages
Creators: name: Bennett, A. H.
name: Kaufman, Jacob
name: Bennett, A. H.
name: Kaufman, Jacob
Publisher: name: Unknown
Year: 1961
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the report: This report is based on research which was part of a project to develop more efficient work methods, equipment, and facilities for the off-farm handling, storing, and preparation for market, of intermediate and early crop potatoes. The data obtained were used to evaluate the engineering, economic, and biological aspects of six practical cooling methods, some of which are presently in use. The objectives of this study were: (1) To observe the nature of the storage environment produced by six different cooling methods, including supplemental cooling; (2) to measure the effects of the different methods on potato quality; and (3) in light of the observations of environment and product quality, to evaluate the relationship between cost and benefits derived for each method studied.
Nachwuchsförderung / Jeunes chercheurs
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2017

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2015/2016
Why does D=4, rather than more (or less)? An Orwellian explanation
Creators: name: Deser, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Two simple, if Draconian, assumptions about classical gravity fix space-time's dimension at D=4
description: For Mike Duff, friend, collaborator, eminent theoretician, peerless Defender of the Faith, on his 70th. Minor clarifications for published version. Final typos corrected
Photon-Pressure Strong-Coupling between two Superconducting Circuits
Creators: name: Bothner, D.
name: Rodrigues, I. C.
name: Steele, G. A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The nonlinear, parametric coupling between two harmonic oscillators has been used in the field of optomechanics for breakthrough experiments regarding the control and detection of mechanical resonators. Although this type of interaction is an extremely versatile resource and not limited to coupling light fields to mechanical resonators, there have only been, very few reports of implementing it within other systems so far. Here, we present a device consisting of two superconducting LC circuits, parametrically coupled to each other by a magnetic flux-tunable photon-pressure interaction. We observe dynamical backaction between the two circuits, photon-pressure-induced transparency and absorption, and enter the parametric strong-coupling regime, enabling switchable and controllable coherent state transfer between the two modes. As result of the parametric interaction, we are also able to amplify and observe thermal current fluctuations in a radio-frequency LC circuit close to its quantum ground-state. Due to the high design flexibility and precision of superconducting circuits and the large single-photon coupling rate, our approach will enable new ways to control and detect radio-frequency photons and allow for experiments in parameter regimes not accessible to other platforms with photon-pressure interaction.
Impressum / Mentions légales
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2017

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2015/2016
Hopf-Galois structures on finite extensions with quasisimple Galois group
Creators: name: Tsang, Cindy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $L/K$ be a finite Galois extension of fields with Galois group $G$. It is known that $L/K$ admits exactly two Hopf-Galois structures when $G$ is non-abelian simple. In this paper, we extend this result to the case when $G$ is quasisimple.
description: Accepted version. Sections 4.1 and 4.2 have been swapped
Aggregated hold out for sparse linear regression with a robust loss function
Creators: name: Maillard, Guillaume
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Sparse linear regression methods generally have a free hyperparameter which controls the amount of sparsity, and is subject to a bias-variance tradeoff. This article considers the use of Aggregated hold-out to aggregate over values of this hyperparameter, in the context of linear regression with the Huber loss function. Aggregated hold-out (Agghoo) is a procedure which averages estimators selected by hold-out (cross-validation with a single split). In the theoretical part of the article, it is proved that Agghoo satisfies a non-asymptotic oracle inequality when it is applied to sparse estimators which are parametrized by their zero-norm. In particular , this includes a variant of the Lasso introduced by Zou, Hasti{é} and Tibshirani. Simulations are used to compare Agghoo with cross-validation. They show that Agghoo performs better than CV when the intrinsic dimension is high and when there are confounders correlated with the predictive covariates.
One Sided indeterminism alone is not a useful resource to simulate any nonlocal correlation
Creators: name: Paul, Biswajit
name: Mukherjee, Kaushiki
name: Sarkar, Debasis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Determinism, no signaling and measurement independence are some of the constraints required for framing Bell inequality. Any model simulating nonlocal correlations must either individually or jointly give up these constraints. Recently M. J. W. Hall (Phys Review A, \textbf{84}, 022102 (2011)) derived different forms of Bell inequalities under the assumption of individual or joint relaxation of those constraints on both(i.e., two) the sides of a bipartite system. In this work we have investigated whether one sided relaxation can also be a useful resource for simulating nonlocal correlations or not. We have derived Bell-type inequalities under the assumption of joint relaxation of these constraints only by one party of a bipartite system. Interestingly we found that any amount of randomness in correlations of one party in absence of signaling between two parties is incapable of showing any sort of Bell-CHSH violation whereas signaling and measurement dependence individually can simulate any nonlocal correlations. We have also completed the proof of a recent conjecture due to Hall (Phys. Rev. A \textbf{82}, 062117 (2010); Phys. Rev. A \textbf{84}, 022102 (2011)) for one sided relaxation scenario only.
description: 7 pages, 4 figures, revtex, to appear in qip
On Identifying and Mitigating Bias in the Estimation of the COVID-19 Case Fatality Rate
Creators: name: Angelopoulos, Anastasios Nikolas
name: Pathak, Reese
name: Varma, Rohit
name: Jordan, Michael I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The relative case fatality rates (CFRs) between groups and countries are key measures of relative risk that guide policy decisions regarding scarce medical resource allocation during the ongoing COVID-19 pandemic. In the middle of an active outbreak when surveillance data is the primary source of information, estimating these quantities involves compensating for competing biases in time series of deaths, cases, and recoveries. These include time- and severity- dependent reporting of cases as well as time lags in observed patient outcomes. In the context of COVID-19 CFR estimation, we survey such biases and their potential significance. Further, we analyze theoretically the effect of certain biases, like preferential reporting of fatal cases, on naive estimators of CFR. We provide a partially corrected estimator of these naive estimates that accounts for time lag and imperfect reporting of deaths and recoveries. We show that collection of randomized data by testing the contacts of infectious individuals regardless of the presence of symptoms would mitigate bias by limiting the covariance between diagnosis and death. Our analysis is supplemented by theoretical and numerical results and a simple and fast open-source codebase at https://github.com/aangelopoulos/cfr-covid-19 .
description: Harvard Data Science Review (2020) article available at https://hdsr.mitpress.mit.edu/pub/y9vc2u36
Ferroelectric instability of two-dimensional crystals
Creators: name: Mikhailov, S. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The macroscopic dielectric permittivity of dielectric crystals is related to the microscopic atomic polarizability of constituent atoms by the known Clausius-Mossotti relation obtained in the middle of 19th century. We derive a similar relation for recently discovered two-dimensional crystals (mono- and bilayer graphene, boron nitride, etc) and show that, in contrast to three-dimensional materials, much stronger electron-electron interaction in two dimensions leads to a spontaneous electric polarization of the ground state of two-dimensional crystals. The predicted ferroelectric transition may have interesting applications in electrodynamics and optics.
description: 3 pages, 3 figures
On periodic points of Hamiltonian diffeomorphisms of $\mathbb{C}\text{P}^d$ via generating functions
Creators: name: Allais, Simon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 70H12, 37J10, 58E05

description: Inspired by the techniques of Givental and Théret, we provide a proof with generating functions of a recent result of Ginzburg-Gürel concerning the periodic points of Hamiltonian diffeomorphisms of $\mathbb{C}\text{P}^d$. For instance, we are able to prove that fixed points of pseudo-rotations are isolated as invariant sets or that a Hamiltonian diffeomorphism with a hyperbolic fixed point has infinitely many periodic points.
description: 31 pages
The multiple holomorph of split metacyclic $p$-groups
Creators: name: Tsang, Cindy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Given any group $G$, the normalizer $\mathrm{Hol}(G)$ of the subgroup of left translations in the group of all permutations on $G$ is called the holomorph, and the normalizer $\mathrm{NHol}(G)$ of $\mathrm{Hol}(G)$ in turn is called the multiple holomorph. The quotient $T(G) = \mathrm{NHol}(G)/\mathrm{Hol}(G)$ has been computed for various families of groups $G$ in the literature. In this paper, we shall supplement the existing results by considering finite split metacyclic $p$-groups $G $ with $p$ an odd prime. We are able to give a closed formula for the order of $T(G)$ when $G$ satisfies some mild conditions. Our work gives a new family of groups $G$ for which $T(G)$ is not a $2$-group.
description: very minor changes
On a Generalized Lamé-Navier system in $\mathbb{R}^3$
Creators: name: Santiesteban, Daniel Alfonso
name: Blaya, Ricardo Abreu
name: Alejandre, Martín Patricio Árciga
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This paper is devoted to a fundamental system of equations in Linear Elasticity Theory: the famous Lamé-Navier system. The Clifford algebra language allows us to rewrite this system in terms of the euclidean Dirac operator, which at the same time suggests a very natural generalization involving the so-called structural sets. We are interested in finding some structures in the solutions of these generalized Lamé-Navier systems. Using MATLAB we also implement algorithms to compute with such partial differential operators as well as to verify some theoretical results obtained in the paper.
description: 19 pages 0 figures
title: Evaluation of MLOps approaches and implementation of a data product development pipeline
Creators: name: Ormos, Leopold
Publisher: name: Universität Stuttgart
Year: 2024
Subjects: subject: 004

description: Recent advancements in Machine Learning (ML), particularly with Large Language Models (LLMs), have significantly impacted the tech industry, prompting companies to integrate these technologies into their products and services. However, many organizations lack the expertise to effectively develop or incorporate ML models, facing challenges in both development and operation. Despite the emergence of Machine Learning Operations (MLOps) paradigms intended to streamline the handling of Artificial Intelligence (AI)-enabled applications, selecting appropriate tools and constructing cohesive MLOps pipelines remain significant hurdles due to the vast and fragmented landscape of available tools. This master’s thesis investigates how a holistic MLOps pipeline can enhance the development and operational processes of data products, even in business contexts without extensive technical expertise. Conducted within a department of the Robert Bosch GmbH, the research is structured into three phases. The first phase involves a comprehensive evaluation of state-of-the-art MLOps architectures, platforms, and tools through a Rapid Review, establishing a foundation for the pipeline’s design. The second phase focuses on designing and implementing an MLOps pipeline tailored to the specific requirements and constraints of the case study environment. The developed solution integrates with existing infrastructure on Azure and Development and Operations (DevOps) processes using GitHub and Terraform. It is built on the Databricks platform, utilizing integrated components such as Unity Catalog and MLflow, and is extended with the tool Langfuse and libraries like Giskard and Ragas. In the third phase, the implemented pipeline is evaluated in a practical setting through two hackathon-like use tests. Feedback from these tests assesses the pipeline’s effectiveness in improving the efficiency and quality of data product development. The evaluation revealed successful application in data product development and identified areas for further improvement, such as enhancing the pipeline’s documentation. Overall, this thesis presents a complete process of developing an MLOps pipeline from initial evaluation to practical implementation and assessment in a real-world context. The findings contribute to the field by providing practical insights into effectively implementing MLOps pipelines, offering valuable guidance for organizations seeking to adopt MLOps practices to optimize their data product development.
Steady state entanglement of two superconducting qubits engineered by dissipation
Creators: name: Reiter, Florentin
name: Tornberg, L.
name: Johansson, Göran
name: Sørensen, Anders S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scheme for the dissipative preparation of an entangled steady state of two superconducting qubits in a circuit QED setup. Combining resonator photon loss, a dissipative process already present in the setup, with an effective two-photon microwave drive, we engineer an effective decay mechanism which prepares a maximally entangled state of the two qubits. This state is then maintained as the steady state of the driven, dissipative evolution. The performance of the dissipative state preparation protocol is studied analytically and verified numerically. In view of the experimental implementation of the presented scheme we investigate the effects of potential experimental imperfections and show that our scheme is robust to small deviations in the parameters. We find that high fidelities with the target state can be achieved both with state-of-the-art 3D, as well as with the more commonly used 2D transmons. The promising results of our study thus open a route for the demonstration of an entangled steady state in circuit QED.
description: 12 pages, 5 figures; close to published version
Implications of the AMS-02 positron fraction in cosmic rays
Creators: name: Yuan, Qiang
name: Bi, Xiao-Jun
name: Chen, Guo-Ming
name: Guo, Yi-Qing
name: Lin, Su-Jie
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The AMS-02 collaboration has just released its first result of the cosmic positron fraction $e^+/(e^-+e^+)$ with high precision up to $\sim 350$ GeV. The AMS-02 result shows the same trend with the previous PAMELA result, which requires extra electron/positron sources on top of the conventional cosmic ray background, either from astrophysical sources or from dark matter annihilation/decay. In this paper we try to figure out the nature of the extra sources by fitting to the AMS-02 $e^+/(e^-+e^+)$ data, as well as the electron and proton spectra by PAMELA and the $(e^-+e^+)$ spectrum by Fermi and HESS. We adopt the GALPROP package to calculate the propagation of the Galactic cosmic rays and the Markov Chain Monte Carlo sampler to do the fit. We find that the AMS-02 data have implied essential difference from the PAMELA data. There is {\rm tension} between the AMS-02 $e^+/(e^-+e^+)$ data and the Fermi/HESS $(e^-+e^+)$ spectrum, that the AMS-02 data requires less contribution from the extra sources than Fermi/HESS. Then we redo the fit without including the Fermi/HESS data. In this case both the pulsars and dark matter annihilation/decay can explain the AMS-02 data. The pulsar scenario has a soft inject spectrum with the power-law index $\sim 2$, while the dark matter scenario needs $τ^+τ^-$ final state with mass $\sim 600$ GeV and a boost factor $\sim 200$.
description: Accepted for publication in Astroparticle Physics