cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Miguel Sánchez : a contemporary Terentian influence upon Lope de Vega
Creators: name: Stephenson, Robert Clarence
Publisher: name: The University of Texas at Austin
Year: 1930
Subjects: subject: Miguel Sánchez
subject: Lope de Vega
subject: Terence
subject: Influence
subject: Spanish theatre
subject: Sánchez, Miguel, -approximately 1615
subject: Vega, Lope de, 1562-1635
subject: Terence

description: However unpromising it might appear in advance, it nevertheless happens that the study of Sánchez' plays leads to conclusions that are both important and interesting. Comments upon Lope's allusions to Sánchez, in the introduction to Professor Rennert's edition of the plays, provoked from another great scholar a criticism and counter-explanation that, although it is erroneous, has been generally accepted and perfunctorily repeated by other critics. My first purpose, which was merely to refute this prevalent error, led me to a two-fold discovery, first, that Sánchez' technique represents a distinct break with the tradition of the popular Spanish theatre, and, second, that it exerted a formative influence upon Lope de Vega's early manner: it is a bridge between the Roman comic playwrights on the one hand and Lope's nueva comedia on the other. Incidentally, it suggests a new answer to the mooted question whether Sánchez is to be regarded as a follower or as a predecessor of Lope's. After a necessary preliminary chapter, the subject of this study will be what is Terentian in Sánchez and what is Sanchescan in Lope
High quality topic extraction from business news explains abnormal financial market volatility
Creators: name: Hisano, Ryohei
name: Sornette, Didier
name: Mizuno, Takayuki
name: Ohnishi, Takaaki
name: Watanabe, Tsutomu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Understanding the mutual relationships between information flows and social activity in society today is one of the cornerstones of the social sciences. In financial economics, the key issue in this regard is understanding and quantifying how news of all possible types (geopolitical, environmental, social, financial, economic, etc.) affect trading and the pricing of firms in organized stock markets. In this article, we seek to address this issue by performing an analysis of more than 24 million news records provided by Thompson Reuters and of their relationship with trading activity for 206 major stocks in the S&P US stock index. We show that the whole landscape of news that affect stock price movements can be automatically summarized via simple regularized regressions between trading activity and news information pieces decomposed, with the help of simple topic modeling techniques, into their "thematic" features. Using these methods, we are able to estimate and quantify the impacts of news on trading. We introduce network-based visualization techniques to represent the whole landscape of news information associated with a basket of stocks. The examination of the words that are representative of the topic distributions confirms that our method is able to extract the significant pieces of information influencing the stock market. Our results show that one of the most puzzling stylized fact in financial economies, namely that at certain times trading volumes appear to be "abnormally large," can be partially explained by the flow of news. In this sense, our results prove that there is no "excess trading," when restricting to times when news are genuinely novel and provide relevant financial information.
description: The previous version of this article included an error. This is a revised version
Gravitational Chern-Simons terms and black hole entropy. Global aspects
Creators: name: Bonora, L.
name: Cvitan, M.
name: Prester, P. Dominis
name: Pallua, S.
name: Smolic, I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the topological and global gauge properties of the formula for a black hole entropy due to a purely gravitational Chern-Simons term. We study under what topological and geometrical conditions this formula is well-defined. To this end we have to analyze the global properties of the Chern-Simons term itself and the quantization of its coupling. We show that in some cases the coupling quantization may interfere with the well-definiteness of the entropy formula.
description: 37 pages, a few comments and references added
METODOLOGÍA PARA LA ESTIMACIÓN DE LA VULNERABILIDAD ORIENTADA AL ANÁLISIS MULTIAMENAZA APLICADA A LA ESTRATEGIA DE RECUPERACIÓN POST-DESASTRE DE LA PALMA
Creators: name: Martín-Raya, Nerea
name: García Vaquero, María
name: Domínguez Hernández, Alba
Publisher: name: Zenodo
Year: 2022
Subjects: riesgo
reducción riesgo de desastre
análisis vulnerabilidad
SIG
Volcán Cumbre Vieja

description: Tradicionalmente el análisis del riesgo se ha centrado, principalmente, en el estudio de las amenazas y se han obviado otros elementos, igual de importantes, como la exposición o la vulnerabilidad. Sin embargo, este último, actúa como un factor determinante frente a la amenaza y, por tanto, constituye un elemento indispensable para el cómputo del riesgo. Dentro del contexto del Marco Territorial de Recuperación de La Palma tras el desastre de origen volcánico ocurrido a finales del año 2021, surge la necesidad de llevar a cabo distintos análisis transversales para evaluar y mitigar el riesgo de desastres. Por ello, cobra especial interés establecer una metodología de análisis de la vulnerabilidad orientada al análisis del riesgo y, de esta forma, poder establecer medidas para reducirla y adaptarse a los futuros impactos esperados. Este trabajo centra sus esfuerzos en valorar la vulnerabilidad de la población, edificaciones, cultivos, infraestructuras, servicios y medioambiente en el Valle de Aridane frente a la amenaza sísmica, volcánica, de movimientos de ladera e inundaciones. Desde esta perspectiva, se aplica una metodología novedosa fundamentada en un análisis multi-amenaza. Para ello, se han estimado individualmente cada uno de los elementos abordados, estableciendo diferentes variables y criterios que determinan su mayor o menor vulnerabilidad y, asignándole un valor en función de ello. Por ejemplo, algunos factores que se han tenido en cuenta para la población son el nivel de estudios, cantidad de extranjeros y ancianos o la densidad de población. Posteriormente, utilizando Sistemas de Información Geográfica (SIG) se ha calculado la vulnerabilidad por elemento y se ha realizado una integración de todas ellos. Los resultados obtenidos permiten observar la vulnerabilidad en el Valle de Aridane a través de una cartografía sencilla, completa y entendible para los diferentes sectores implicados
Efficient calculation of three-dimensional tensor networks
Creators: name: Yang, Li-Ping
name: Fu, Y. F.
name: Xie, Z. Y.
name: Xiang, T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have proposed an efficient algorithm to calculate physical quantities in the translational invariant three-dimensional tensor networks, which is particularly relevant to the study of the three-dimensional classical statistical models and the (2+1)-dimensional quantum lattice models. In the context of a classical model, we determine the partition function by solving the dominant eigenvalue problem of the transfer matrix, whose left and right dominant eigenvectors are represented by two projected entangled simplex states. These two projected entangled simplex states are not Hermitian conjugate to each other but are appropriately arranged so that their inner product can be computed much more efficiently than in the usual prescription. For the three-dimensional Ising model, the calculated internal energy and spontaneous magnetization agree with the published results in the literature. The possible improvement and extension to other models are also discussed.
description: 8 pages, 10 figures
Circuit quantum electrodynamic model of dissipative-dispersive Josephson traveling-wave parametric amplifiers
Creators: name: Yuan, Yongjie
name: Haider, Michael
name: Russer, Johannes A.
name: Russer, Peter
name: Jirauschek, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a quantum mechanical model for a four-wave mixing Josephson traveling-wave parametric amplifier including substrate losses and associated thermal fluctuations. Under the assumption of a strong undepleted classical pump tone, we derive an analytic solution for the bosonic annihilation operator of the weak signal photon field using temporal equations of motion in a reference timeframe, including chromatic dispersion. From this result, we can predict the asymmetric gain spectrum of a Josephson traveling-wave parametric amplifier due to non-zero substrate losses. We also predict the equivalent added input noise including quantum fluctuations as well as thermal noise contributions. Our results are in excellent agreement with recently published experimental data.
description: 17 pages, 6 figures
Observation of the Production of a W Boson in Association with a Single Charm Quark
Creators: name: CDF Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The first observation of the production of a $W$ boson with a single charm quark ($c$) jet in $p\bar{p}$ collisions at $\sqrt{s}=1.96 {\rm TeV}$ is reported. The analysis uses data corresponding to 4.3 fb$^{-1}$, recorded with the CDF II detector at the Fermilab Tevatron. Charm quark candidates are selected through the identification of an electron or muon from charm-hadron semileptonic decay within a hadronic jet, and a $Wc$ signal is observed with a significance of 5.7 standard deviations. The production cross section $σ_{Wc}(p_{Tc}>20 {\rm GeV}/c, |η_c|<1.5)\times B(W\rightarrow \ellν)$ is measured to be $13.6^{+3.4}_{-3.1} {\rm pb}$ and is in agreement with theoretical expectations. From this result the magnitude of the quark-mixing matrix element $V_{cs}$ is derived, $|V_{cs}|=1.08\pm0.16$ along with a lower limit of $|V_{cs}|>0.71$ at the 95% confidence level, assuming that the $Wc$ production through $c$ to $s$ quark coupling is dominant.
description: 7 pages, 1 figure
A New Correlation Between GRB X-Ray Flares And The Prompt Emission
Creators: name: Sonbas, E.
name: MacLachlan, G. A.
name: Shenoy, A.
name: Dhuga, K. S.
name: Parke, W. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: From a sample of GRBs detected by the $Fermi$ and $Swift$ missions, we have extracted the minimum variability time scales for temporal structures in the light curves associated with the prompt emission and X-ray flares. A comparison of this variability time scale with pulse parameters such as rise times,determined via pulse-fitting procedures, and spectral lags, extracted via the cross-correlation function (CCF), indicate a tight correlation between these temporal features for both the X-ray flares and the prompt emission. These correlations suggests a common origin for the production of X-ray flares and the prompt emission in GRBs.
description: 5 pages, 3 figures, Accepted for publication in ApJL
TA'LIMDA PEDAGOGIK O'LCHOVLARNI ZAMONAVIYLASHTIRISH VA XALQARO DASTURLARNI JORIY ETISH ZARURATI
Creators: name: Egamberdiyeva, Turg'unoy
Publisher: name: Zenodo
Year: 2023

description: Mazkur maqolada bugungi kunda ta'limda pedagogik o'lchovlarni zamonaviylashtirish va xalqaro dasturlarni joriy etishning zarurati ortib bormoqda. Xalqaro baholash dasturlarining bosh maqsadi maktabda o'rganayotgan bilimlarini talabalar tomonidan kundalik hayotda qo'llanishi holati qanday ekanligini aniqlash, rivojini  ta'minlashga xizmat qiluvchi dasturlarni ishlab chiqish bilan ijtimoiy muammolarni oldini olish ustuvor vazifalar  to'g'risidagi fikr mulohazalar bayon qilingan
Single-valued harmonic polylogarithms and the multi-Regge limit
Creators: name: Dixon, Lance J.
name: Duhr, Claude
name: Pennington, Jeffrey
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that the natural functions for describing the multi-Regge limit of six-gluon scattering in planar N=4 super Yang-Mills theory are the single-valued harmonic polylogarithmic functions introduced by Brown. These functions depend on a single complex variable and its conjugate, (w,w*). Using these functions, and formulas due to Fadin, Lipatov and Prygarin, we determine the six-gluon MHV remainder function in the leading-logarithmic approximation (LLA) in this limit through ten loops, and the next-to-LLA (NLLA) terms through nine loops. In separate work, we have determined the symbol of the four-loop remainder function for general kinematics, up to 113 constants. Taking its multi-Regge limit and matching to our four-loop LLA and NLLA results, we fix all but one of the constants that survive in this limit. The multi-Regge limit factorizes in the variables (ν,n) which are related to (w,w*) by a Fourier-Mellin transform. We can transform the single-valued harmonic polylogarithms to functions of (ν,n) that incorporate harmonic sums, systematically through transcendental weight six. Combining this information with the four-loop results, we determine the eigenvalues of the BFKL kernel in the adjoint representation to NNLLA accuracy, and the MHV product of impact factors to NNNLLA accuracy, up to constants representing beyond-the-symbol terms and the one symbol-level constant. Remarkably, only derivatives of the polygamma function enter these results. Finally, the LLA approximation to the six-gluon NMHV amplitude is evaluated through ten loops.
description: 71 pages, 2 figures, plus 10 ancillary files containing analytic expressions in Mathematica format. V2: Typos corrected and references added. V3: Typos corrected; assumption about single-Reggeon exchange made explicit
Towards a model of teachers’ continuing professional development (CPD): a border crossing journey with embedded contradictions, ethical dilemmas and transformative possibilities
Creators: name: MOONEY SIMMIE, GERALDINE
name: O’Meara, Niamh
name: Forster, Annette
name: Ryan, Veronica
name: Ryan, Tara
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 39
subject: Education

description: Shulman (1989) argued how ‘outrageously complex’ teaching is and how reform imperatives driving standards should not lead to standardisation and the subsequent loss of soul. We assert that framing a model of teachers’ Continuing Professional Development (CPD) is similarly ‘outrageously complex’, a multifaceted construct that has professional, personal and political ends and purposes and is concerned with needs beyond that of the individual teacher, such as the teaching profession, schooling system, economic and social needs, as well as the wider public-interest values of the state. For this study, we worked as a community of inquiry, drawing from theoretical pluralism in order to conduct an abductive analysis of existing models of teachers’ CPD. Our model of teachers’ CPD offers an explanatory framework that positions teachers’ values, goals and dreams at the centre, involves a relational border crossing journey rather than a final destination, and necessitates ethics (philosophy), critical reflexivity and the empirical as productive ways of staying with the embedded contradictions, ethical dilemmas and transformative possibilities of an advanced professional practice. We present this new model of CPD not as a final analysis but rather as a theory worthy of further research and consideration.
The Debate Over Understanding in AI's Large Language Models
Creators: name: Mitchell, Melanie
name: Krakauer, David C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We survey a current, heated debate in the AI research community on whether large pre-trained language models can be said to "understand" language -- and the physical and social situations language encodes -- in any important sense. We describe arguments that have been made for and against such understanding, and key questions for the broader sciences of intelligence that have arisen in light of these arguments. We contend that a new science of intelligence can be developed that will provide insight into distinct modes of understanding, their strengths and limitations, and the challenge of integrating diverse forms of cognition.
description: Under submission as a Perspective article. Updated with additional discussion and citations
Schwabedissen, Hermann: Die Federmesser-Gruppen des nordwesteuropäischen Flachlandes
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Schwabedissen, Hermann: Die Federmesser-Gruppen des nordwesteuropäischen Flachlandes. Zur Ausbreitung des Spät- Magdalénien. Offa-Bücher, Neue Folge 9. Neumünster (Karl- Wachholz-Verlag) 1954. 104 Seiten. Mit 23 Abb. und 106 Taf.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 23 (1954): Nachrichten aus Niedersachsens Urgeschichte
Brain organization into resting state networks emerges at criticality on a model of the human connectome
Creators: name: Haimovici, Ariel
name: Tagliazucchi, Enzo
name: Balenzuela, Pablo
name: Chialvo, Dante R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The relation between large-scale brain structure and function is an outstanding open problem in neuroscience. We approach this problem by studying the dynamical regime under which realistic spatio-temporal patterns of brain activity emerge from the empirically derived network of human brain neuroanatomical connections. The results show that critical dynamics unfolding on the structural connectivity of the human brain allow the recovery of many key experimental findings obtained with functional Magnetic Resonance Imaging (fMRI), such as divergence of the correlation length, anomalous scaling of correlation fluctuations, and the emergence of large-scale resting state networks.
description: Physical Review Letters, (2013 in press)
Near-optimal compressed sensing guarantees for total variation minimization
Creators: name: Needell, Deanna
name: Ward, Rachel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 41A46, 68Q25, 68W20, 90C27

description: Consider the problem of reconstructing a multidimensional signal from an underdetermined set of measurements, as in the setting of compressed sensing. Without any additional assumptions, this problem is ill-posed. However, for signals such as natural images or movies, the minimal total variation estimate consistent with the measurements often produces a good approximation to the underlying signal, even if the number of measurements is far smaller than the ambient dimensionality. This paper extends recent reconstruction guarantees for two-dimensional images to signals of arbitrary dimension d>1 and to isotropic total variation problems. To be precise, we show that a multidimensional signal x can be reconstructed from O(sd*log(N^d)) linear measurements using total variation minimization to within a factor of the best s-term approximation of its gradient. The reconstruction guarantees we provide are necessarily optimal up to polynomial factors in the spatial dimension d.
Nonconformal holographic model for D-meson suppression at energies available at the CERN Large Hadron Collider
Creators: name: Das, Santosh K.
name: Davody, Ali
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The drag force of charm quarks propagating through a thermalized system of Quark Gluon Plasma (QGP) has been considered within the framework of both conformal/non-conformal Anti de Sitter (AdS) correspondence. Newly derived Einstein Fluctuation-Dissipation relation has been used to calculate the heavy flavor diffusion coefficients. Using the drag and diffusion coefficients as inputs Langevin equation has been solved to study the heavy flavor suppression factor. It has been shown that within conformal AdS correspondence the D-meson suppression at LHC energy can be reproduced where as the non-conformal AdS correspondence fail to reproduce the experimental results. It suggests collisional loss alone within non-conformal AdS correspondence can not reproduce the experimental results and inclusion of radiative loss becomes important.
description: 7 pages, 7 figures
Geometries for universal quantum computation with matchgates
Creators: name: Brod, Daniel J.
name: Galvão, Ernesto F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Matchgates are a group of two-qubit gates associated with free fermions. They are classically simulatable if restricted to act between nearest neighbors on a one-dimensional chain, but become universal for quantum computation with longer-range interactions. We describe various alternative geometries with nearest-neighbor interactions that result in universal quantum computation with matchgates only, including subtle departures from the chain. Our results pave the way for new quantum computer architectures that rely solely on the simple interactions associated with matchgates.
description: 6 pages, 4 figures. Updated version includes an appendix extending one of the results
An Analytical Estimation of Spiking Neural Networks Energy Efficiency
Creators: name: Lemaire, Edgar
name: Cordone, Loic
name: Castagnetti, Andrea
name: Novac, Pierre-Emmanuel
name: Courtois, Jonathan
name: Miramond, Benoit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Spiking Neural Networks are a type of neural networks where neurons communicate using only spikes. They are often presented as a low-power alternative to classical neural networks, but few works have proven these claims to be true. In this work, we present a metric to estimate the energy consumption of SNNs independently of a specific hardware. We then apply this metric on SNNs processing three different data types (static, dynamic and event-based) representative of real-world applications. As a result, all of our SNNs are 6 to 8 times more efficient than their FNN counterparts.
description: Accepted for ICONIP 2022 Conference
The anisotropic Kerr nonlinear refractive index of the beta-barium borate (β-BaB2O4) nonlinear crystal
Creators: name: Bache, Morten
name: Guo, Hairun
name: Zhou, Binbin
name: Zeng, Xianglong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the anisotropic nature of the Kerr nonlinear response in a beta-barium borate (β-BaB2O4, BBO) nonlinear crystal. The focus is on determining the relevant $χ^{(3)}$ cubic tensor components that affect interaction of type I cascaded second-harmonic generation. Various experiments in the literature are analyzed and we correct the data from some of the experiments for contributions from cascading as well as for updated material parameters. We find that the Kerr nonlinear tensor component responsible for self-phase modulation in cascading is considerably larger than what has been used to date. We evaluate the impact of using such a cubic anisotropic response in ultrafast cascading experiments.
description: Updated version, comments on experiments from the literature welcome
Kahlke, Dietrich: Die Bestattungssitten des donauländischen Kulturkreises der jüngeren Steinzeit. Teil I Linienbandkeramik
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Kahlke, Dietrich: Die Bestattungssitten des donauländischen Kulturkreises der jüngeren Steinzeit. Teil I Linienbandkeramik. Berlin (Rütten und Loening) 1954. 157 Seiten, 42 Taf. und 1 Plan. Geb.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 24 (1955): Nachrichten aus Niedersachsens Urgeschichte
Schindler, Reinhard: Ausgrabungen in Alt-Hamburg
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Schindler, Reinhard: Ausgrabungen in Alt-Hamburg. Neue Ergebnisse zur Frühgeschichte der Hansestadt Hamburg. (Verlag „Gesellschaft der Freunde des vaterländischen Schul- und Erziehungswesens") 1957. 180 Seiten mit 53 Textabbildungen und 18 Bildtaf. Halbl.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 28 (1959): Nachrichten aus Niedersachsens Urgeschichte
Réception de la littérature grecque ou latine en classe de langues anciennes: la question de la traduction-interprétation
Creators: name: Kolde, Antje
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2019

description: Dieser Artikel nimmt Jakobson’s Unterscheidung zwischen der interlingualen, der intralingualen und der intersemiotischen Übersetzung auf und analysiert didaktische Szenarien, die diese verschiedenen Rezeptionen fördern und originelle Schülerproduktionen hervorbringen.
description: Pegasus-Onlinezeitschrift, Bd. 18 (2018): Pegasus-Onlinezeitschrift
A super-polynomial quantum-classical separation for density modelling
Creators: name: Pirnay, Niklas
name: Sweke, Ryan
name: Eisert, Jens
name: Seifert, Jean-Pierre
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Density modelling is the task of learning an unknown probability density function from samples, and is one of the central problems of unsupervised machine learning. In this work, we show that there exists a density modelling problem for which fault-tolerant quantum computers can offer a super-polynomial advantage over classical learning algorithms, given standard cryptographic assumptions. Along the way, we provide a variety of additional results and insights, of potential interest for proving future distribution learning separations between quantum and classical learning algorithms. Specifically, we (a) provide an overview of the relationships between hardness results in supervised learning and distribution learning, and (b) show that any weak pseudo-random function can be used to construct a classically hard density modelling problem. The latter result opens up the possibility of proving quantum-classical separations for density modelling based on weaker assumptions than those necessary for pseudo-random functions.
description: 15 pages, one figure
Rhapsody. II. Subhalo Properties and the Impact of Tidal Stripping From a Statistical Sample of Cluster-Size Halos
Creators: name: Wu, Hao-Yi
name: Hahn, Oliver
name: Wechsler, Risa H.
name: Behroozi, Peter S.
name: Mao, Yao-Yuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We discuss the properties of subhalos in cluster-size halos, using a high-resolution statistical sample: the Rhapsody simulations introduced in Wu et al. (2012). We demonstrate that the criteria applied to select subhalos have significant impact on the inferred properties of the sample, including the scatter in the number of subhalos, the correlation between the subhalo number and formation time, and the shape of subhalos' spatial distribution and velocity structure. We find that the number of subhalos, when selected using the peak maximum circular velocity in their histories (a property expected to be closely related to the galaxy luminosity), is uncorrelated with the formation time of the main halo. This is in contrast to the previously reported correlation from studies where subhalos are selected by the current maximum circular velocity; we show that this difference is a result of the tidal stripping of the subhalos. We also find that the dominance of the main halo and the subhalo mass fraction are strongly correlated with halo concentration and formation history. These correlations are important to take into account when interpreting results from cluster samples selected with different criteria. Our sample also includes a fossil cluster, which is presented separately and placed in the context of the rest of the sample.
description: 15 pages, 10 figures; Paper I: arXiv:1209.3309; replaced to match published version
Karlheinz Dietz, Senatus contra principem
Creators: name: Wiegels, Rainer
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Karlheinz Dietz, Senatus contra principem. Untersuchungen zur senatorischen Opposition gegen Kaiser Maximinus Thrax. Vestigia 29. Verlag C. H. Beck, München 1980. XXV, 421 Seiten mit 9 Stammtafeln und 2 Faltkarten
description: Bonner Jahrbücher, Bd. 186.1986: Bonner Jahrbücher
Yangians and quantizations of slices in the affine Grassmannian
Creators: name: Kamnitzer, Joel
name: Webster, Ben
name: Weekes, Alex
name: Yacobi, Oded
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: Algebraic Geometry (math.AG)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We study quantizations of transverse slices to Schubert varieties in the affine Grassmannian. The quantization is constructed using quantum groups called shifted Yangians --- these are subalgebras of the Yangian we introduce which generalize the Brundan-Kleshchev shifted Yangian to arbitrary type. Building on ideas of Gerasimov-Kharchev-Lebedev-Oblezin, we prove that a quotient of the shifted Yangian quantizes a scheme supported on the transverse slices, and we formulate a conjectural description of the defining ideal of these slices which implies that the scheme is reduced. This conjecture also implies the conjectural quantization of the Zastava spaces for PGL(n) of Finkelberg-Rybnykov.
description: 37 pages; v2, slightly strengthened Theorem 2.9
Michel Feugère, Les fibules en Gaule méridionale de la conquête à la fin du Ve siècle après J.-C. Revue Archéologique de Narbonnaise
Creators: name: Haalebos, Jan Kees
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Michel Feugère, Les fibules en Gaule méridionale de la conquête à la fin du Ve siècle après J.-C. Revue Archéologique de Narbonnaise, Supplement 12, Paris 1985. 503 Seiten mit 72 Abbildungen, 174 Tafeln
description: Bonner Jahrbücher, Bd. 188.1988: Bonner Jahrbücher
Der Brand auf Schloß Hautefort / [Nachrichten]
Creators: name: Redaktion, Die
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2017

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 11 Nr. 1 (1970): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
A search for high-mass resonances decaying to tau+tau- in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This Letter presents a search for high-mass resonances decaying into tau+tau- final states using proton-proton collisions at sqrt(s) = 7 TeV produced by the Large Hadron Collider. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 4.6 inverse femtobarns. No statistically significant excess above the Standard Model expectation is observed; 95% credibility upper limits are set on the cross section times branching fraction of Z' resonances decaying into tau+tau- pairs as a function of the resonance mass. As a result, Z' bosons of the Sequential Standard Model with masses less than 1.40 TeV are excluded at 95% credibility.
description: 10 pages plus author list (22 pages total), 2 figures, 3 tables, submitted to Phys. Lett. B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2012-03/
Dynamically generated quadrupole polarization using Floquet adiabatic evolution
Creators: name: Camacho, Gonzalo
name: Karrasch, Christoph
name: Rausch, Roman
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the nonequilibrium dynamics of the $S=1$ quantum spin chain subjected to a time-dependent external drive, where the driving frequency is adiabatically decreased as a function of time (``Floquet adiabatic evolution''). We show that when driving the rhombic anisotropy term (known as the ``two-axis countertwisting'' in the context of squeezed spin states) of a Néel antiferromagnet, we are able to induce an overall enhancement in the quadrupole polarization, while at the same time suppressing the staggered magnetization order. The system evolves into a new state with a net quadrupole moment and antiferroquadrupolar correlations. This state remains stable at long times once the driving frequency is kept constant. On the other hand, we find that we cannot achieve a quadrupole polarization for the symmetry-protected Haldane phase, which remains robust against such driving.
Imagining a Multilingual Cyberspace
Creators: name: Zaugg, Isabelle A.
Publisher: name: Zenodo
Year: 2019
Subjects: digital equity, digital inequality, language justice, Ethiopia, Africa, scripts

description: This chapter in the book "Finding control: Visions for the Future Internet," addresses steps diverse stakeholders can take to build language equity in cyberspace. It draws on research on grassroots development of digital supports for Ethiopian and Eritrean languages written in the Ethiopic script, as well as the ongoing challenges that constrain the digital vitality of many languages across the globe.
A DFT+U type functional derived to explicitly address the flat plane condition
Creators: name: Burgess, Andrew
name: Linscott, Edward
name: O'Regan, David D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A new DFT+U type corrective functional is derived from first principles to enforce the flat plane condition on localized subspaces, thus dispensing with the need for an ad hoc derivation from the Hubbard model. The newly derived functional as given by equation 5 yields relative errors below 0.6% in the total energy of the dissociated s-block dimers as well as the dissociated H5+ ring system. In comparison bare PBE and PBE+U (using Dudarev's 1998 Hubbard functional) yields relative energetic errors as high as 8.0% and 20.5% respectively.
description: 8 pages, 5 figures, plus 13 pages of Supplementary Information
Electrostatic effects of the MnBi2Te4-superconductor hetero-structures in chiral Majorana search
Creators: name: Chen, Li
name: Cao, Zhan
name: He, Ke
name: Liu, Xin
name: Liu, Dong E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The realization of chiral Majorana modes is a challenging task. We aim to comprehend the phase diagrams and parameter control capabilities of the actual devices used in the chiral Majorana search. Beyond the well-known minimal models, we develop a numerical simulation scheme using a self-consistent Schrodinger-Poisson approach to study, as an example, the MnBi2Te4 thin film coupled to an s-wave superconductor. We show that both the superconducting proximity effect and the tunability of the chemical potential for the topological surface states are significantly influenced by the gate-induced electrostatic potential. This complicates the implementation in experiments, and the actual topological region will be narrowed in stark contrast to those predicted in the previous minimal models. Nevertheless, we demonstrate that the chiral Majorana mode still exists in a wide range of experimental parameters with practical tunability.
description: 11 pages, 9 figures
Electric field tunable multi-state tunnel magnetoresistances in 2D van der Waals magnetic heterojunctions
Creators: name: Ren, X. X.
name: Liu, B.
name: Zhang, Xian
name: Li, Ping
name: Guo, Zhi-Xin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic tunnel junction (MTJ) based on van der Waals (vdW) magnetic layers has been found to present excellent tunneling magnetoresistance (TMR) property, which has great potential applications in field sensing, non-volatile magnetic random access memories, and spin logics. Although MTJs composed of multilayer vdW magnetic homojunction have been extensively investigated, the ones composed of vdW magnetic heterojunction is still to be explored. Here we use first-principles approaches to reveal that the magnetic heterojunction MTJs have much more distinguishable TMR values than the homojunction ones. In the MTJ composed of bilayer CrI3/bilayer Cr2Ge2Te6 heterojunction, we find there are eight stable magnetic states, leading to six distinguishable electronic resistances. As a result, five sizable TMRs larger than 300% can be obtained (the maximum TMR is up to 620,000%). Six distinguishable memories are obtained which is two times larger than that of a four-layered homojunction MTJ. The underlying relationships among magnetic state, spin-polarized band structures, and transmission spectrums are further revealed to explain the multiple TMR values. We also find that the magnetic states and thus TMRs can be efficiently modulated by an external electric field. This study opens an avenue to the design of high-performance MTJ devices based on vdW heterojunctions.
description: 6 figures
Lidar-level localization with radar? The CFEAR approach to accurate, fast and robust large-scale radar odometry in diverse environments
Creators: name: Adolfsson, Daniel
name: Magnusson, Martin
name: Alhashimi, Anas
name: Lilienthal, Achim J.
name: Andreasson, Henrik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents an accurate, highly efficient, and learning-free method for large-scale odometry estimation using spinning radar, empirically found to generalize well across very diverse environments -- outdoors, from urban to woodland, and indoors in warehouses and mines - without changing parameters. Our method integrates motion compensation within a sweep with one-to-many scan registration that minimizes distances between nearby oriented surface points and mitigates outliers with a robust loss function. Extending our previous approach CFEAR, we present an in-depth investigation on a wider range of data sets, quantifying the importance of filtering, resolution, registration cost and loss functions, keyframe history, and motion compensation. We present a new solving strategy and configuration that overcomes previous issues with sparsity and bias, and improves our state-of-the-art by 38%, thus, surprisingly, outperforming radar SLAM and approaching lidar SLAM. The most accurate configuration achieves 1.09% error at 5Hz on the Oxford benchmark, and the fastest achieves 1.79% error at 160Hz.
description: Published in Transactions on Robotics. Edited 2022-11-07: Updated affiliation and citation
The evolution of community policing in Queensland to 2007
Creators: name: Lawson, Celeste
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 500202
subject: History and philosophy of law and justice
classificationCode: 500206
subject: History and philosophy of the social sciences

description: The purpose of the study was to identify the gap between policy and the implementation of community policing in the Queensland Police Service in the decades since the Fitzgerald Report (1989), which recommended community policing as the primary policing strategy. Reviews of the Fitzgerald Inquiry recommendations in the first decade after the inquiry (1993, 1994, 1996, 1997 and 2001) revealed that community policing was resisted by police culture because the approach was inconsistent with traditional policing methods, yet the community policing philosophy continued to be the stated primary policing strategy in Queensland and was reflected in organisational policy and organisational structure. Using a mixed methods approach, the research analysed the status of community policing in Queensland in 2007 to reveal the gap between policy and implementation, and how crime prevention officers oriented to their role.
A New Fundamental Asymmetric Wave Equation and its Application to Acoustic Wave Propagation
Creators: name: Musielak, Z. E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The irreducible representations of the extended Galilean group are used to derive the symmetric and asymmetric wave equations. It is shown that among these equations only a new asymmetric wave equation is fundamental. By being fundamental the equation gives the most complete description of propagating waves as it accounts for the Doppler effect, forward and backward waves, and makes the wave speed to be the same in all inertial frames. To demonstrate these properties, the equation is applied to acoustic waves propagation in an isothermal atmosphere, and to determine Lamb's cutoff frequency.
Relationships between subjective and objective measures after total knee arthroplasty
Creators: name: Coyle, C
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 420799
subject: Sports science and exercise not elsewhere classified
classificationCode: 320203
subject: Clinical microbiology

description: Total knee arthroplasty (TKA) has proven successful in treating symptomatic arthritis of the knee. Since its development, many and varied outcome measures have been developed to assess outcome. None have been accepted as the universal standard, although some are widely used. Many measures have no data regarding validity, reliability or responsiveness. There is little guidance or consensus in the literature as to which should be used in clinical practice, research or audit. In addition, there is limited research assessing the relationship between subjective clinical outcome scores, patient perceived reports and objective measures such as the timed up and go test (TUG), knee laxity and muscle strength. Establishing relationships between self report and objective measures may aid clinicians in developing more appropriate interventions. Twenty four patients underwent unilateral TKA and were assessed a mean of 27.5 (SD 11.7) months after surgery. Assessment included four patient reported scores (Knee Outcomes and Osteoarthritis Score, Oxford Knee Score, American Knee Society Score and Short Form 12) and three objective outcome scores (knee laxity, quadriceps muscle strength and timed up and go test (TUG). Significant (<0.05) correlations were demonstrated between the four patient reported scores (r=0.410- 0.786) except the MCS portion of the SF12 (r=0.286-0.483). The TUG was the only objective outcome measure to demonstrate a statistically significant (p=0.0001-0.005) correlation with subjective knee outcome scores (OKS, KOOS and 4 items of the KOOS) (r=--0.557 to -0.770). A patient's ability to walk at a certain pace is correlated with patient satisfaction after TKA. There were no 4 observed correlations between knee laxity or quadriceps muscle strength with the four subjective knee scores. Therefore for a comprehensive assessment of outcome after TKA, use of a combination of objective and subjective outcome measures is recommended, as they measure different aspects of outcome.
Unique first-forbidden $β$-decay rates for neutron-rich nickel isotopes in stellar environment
Creators: name: Nabi, Jameel-Un
name: Stoica, Sabin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In astrophysical environments, allowed Gamow-Teller (GT) transitions are important, particularly for $β$-decay rates in presupernova evolution of massive stars, since they contribute to the fine-tuning of the lepton-to-baryon content of the stellar matter prior to and during the collapse of a heavy star. In environments where GT transitions are unfavored, first-forbidden transitions become important especially in medium heavy and heavy nuclei. Particularly in case of neutron-rich nuclei, first-forbidden transitions are favored primarily due to the phase-space amplification for these transitions. In this work the total $β$-decay half-lives and the unique first-forbidden(U1F) $β$-decay rates for a number of neutron-rich nickel isotopes, $^{72-78}$Ni, are calculated using the proton-neutron quasi-particle random phase approximation (pn-QRPA) theory in stellar environment for the first time. For the calculation of the $β$-decay half-lives both allowed and unique first-forbidden transitions were considered. Comparison of the total half-lives is made with measurements and other theoretical calculations where it was found that the pn-QRPA results are in better agreement with experiments and at the same time are suggestive of inclusion of rank 0 and rank 1 operators in first-forbidden rates for still better results.
description: (16 pages, 10 figures, 2 tables)