cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Assessment of the Free Health Care Provision System in Northern Ethiopia
Creators: name: Endale Engida
Publisher: name: Zenodo
Year: 1999

description: Exemptions from user charges have proven to be very hard to implement in those countries that

have adopted them. Poor screening mechanisms have been the main reason for the difficulty of

identifying those patients who are able to pay for granting free care services from those that don't

have the ability.

This is a result of a cross sectional descriptive study that compared the characteristics of free

patients with those paying at the analysis stage in the northern part of Ethiopia. In addition, it has

assessed the presence and extent of under coverage and leakage in the provision of free health

services. The study utilized a multistage sampling method for the household survey and systematic

random sampling for exit interview. In addition, kebele free treatment letter writers, and health

institution administrators were purposively selected to fulfil the study objectives
11-12 Gyr old White Dwarfs 30 parsecs Away
Creators: name: Kilic, Mukremin
name: Thorstensen, John R.
name: Kowalski, P. M.
name: Andrews, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a detailed model atmosphere analysis of two of the oldest stars known in the solar neighborhood, the high proper motion white dwarfs SDSS J110217.48+411315.4 (hereafter J1102) and WD 0346+246 (hereafter WD0346). We present trigonometric parallax observations of J1102, which places it at a distance of only 33.7 +- 2.0 pc. Based on the state of the art model atmospheres, optical, near-, mid-infrared photometry, and distances, we constrain the temperatures, atmospheric compositions, masses, and ages for both stars. J1102 is an 11 Gyr old (white dwarf plus main-sequence age), 0.62 Msol white dwarf with a pure H atmosphere and Teff = 3830 K. WD0346 is an 11.5 Gyr old, 0.77 Msol white dwarf with a mixed H/He atmosphere and Teff = 3650 K. Both stars display halo kinematics and their ages agree remarkably well with the ages of the nearest globular clusters, M4 and NGC 6397. J1102 and WD0346 are the closest examples of the oldest halo stars that we know of.
description: MNRAS Letters, in press
Non-trivial θ-Vacuum Effects in the 2-d O(3) Model
Creators: name: Bögli, Michael
name: Niedermayer, Ferenc
name: Pepe, Michele
name: Wiese, Uwe-Jens
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study θ-vacua in the 2-d lattice O(3) model using the standard action and an optimized constraint action with very small cut-off effects, combined with the geometric topological charge. Remarkably, dislocation lattice artifacts do not spoil the non-trivial continuum limit at θ non-zero, and there are different continuum theories for each value of θ. A very precise Monte Carlo study of the step scaling function indirectly confirms the exact S-matrix of the 2-d O(3) model at θ= π.
description: 4 pages, 3 figures
Uncertainty quantification in electromagnetic observables of nuclei
Creators: name: Acharya, Bijaya
name: Bacca, Sonia
name: Bonaiti, Francesca
name: Muli, Simone Salvatore Li
name: Sobczyk, Joanna E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present strategies to quantify theoretical uncertainties in modern ab-initio calculations of electromagnetic observables in light and medium-mass nuclei. We discuss how uncertainties build up from various sources, such as the approximations introduced by the few- or many-body solver and the truncation of the chiral effective field theory expansion. We review the recent progress encompassing a broad range of electromagnetic observables in stable and unstable nuclei.
description: 17 pages, 6 figures
Why can't we all just agree?: animacy and the person case constraint
Creators: name: Hanson, Rebecca
Publisher: name: University of Calgary
Year: 2003
Subjects: subject: AC1 .T484 2003 H365

description: Bibliography: p. 127-133
description: Many typologically diverse languages exhibit a restriction on the objects of a ditransitive verb: in the presence of indirect object agreement, direct object agreement may not be 1st or 2nd person (Bonet 1991; Albizu 1997) or 3rd person animate (Ormazabal and Romero 2002). This restriction is known as the Person Case Constraint (PCC). In this thesis, I assume that the PCC effects derive from general grammatical principles that conspire to produce the observed restrictions. My analysis rests on four claims: 1) the person/number/gender features of both objects are encoded only in verb agreement, while the objects themselves are featurally-deficient pro's; 2) these pro's receive their interpretation by having the agreement features copied onto them; 3) the copying procedure for both null object is moderated by a single functional head; and 4) if both agreement feature sets are specified for the feature [Sentient], the resulting ambiguity will disable the copying mechanism.
Machine learning models in genome wide association studies of complex traits
Creators: name: Dramane Dagnogo
name: M Treccani
name: E Locatelli
name: M Gallinaro
name: E D Tomi
name:  L Veschetti
name: C Patuzzo
name: N D Dago
name: G Malerba
Publisher: name: F1000 Research Limited
Year: 2022

description: We applied some Machne Learning approaches on simulated data to assess the ability of pattern recognition algorithms (Machine learning models ) to accurately select relevant features (SNPs) underlining the aetiopathogenesis of the disorder and (2) how the presence of a huge number of noisy features impacts on the selection performance of truly associated signals.
Tailoring Three-Point Functions and Integrability III. Classical Tunneling
Creators: name: Gromov, Nikolay
name: Sever, Amit
name: Vieira, Pedro
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We compute three-point functions between one large classical operator and two large BPS operators at weak coupling. We consider operators made out of the scalars of N=4 SYM, dual to strings moving in the sphere. The three-point function exponentiates and can be thought of as a classical tunneling process in which the classical string-like operator decays into two classical BPS states. From an Integrability/Condensed Matter point of view, we simplified inner products of spin chain Bethe states in a classical limit corresponding to long wavelength excitations above the ferromagnetic vacuum. As a by-product we solved a new long-range Ising model in the thermodynamic limit.
description: 37 pages, 10 figures
Effects of spatial dimensionality and band tilting on the longitudinal optical conductivities in Dirac bands
Creators: name: Hou, Jian-Tong
name: Yan, Chang-Xu
name: Tan, Chao-Yang
name: Li, Zhi-Qiang
name: Wang, Peng
name: Guo, Hong
name: Chang, Hao-Ran
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report a unified theory based on linear response, for analyzing the longitudinal optical conductivity (LOC) of materials with tilted Dirac cones. Depending on the tilt parameter $t$, the Dirac electrons have four phases: untilted, type-I, type-II, and type-III; the Dirac dispersion can be isotropic or anisotropic; the spatial dimension of the material can be one-, two-, or three-dimensions (1D, 2D and 3D). The interband LOCs and intraband LOCs in $d$ dimension (with $d\ge2$) are found to scale as $σ_{0}ω^{d-2}$ and $σ_{0}μ^{d-1}δ(ω)$, respectively, where $ω$ is the frequency and $μ$ the chemical potential. The interband LOC vanishes in 1D due to lack of extra spatial dimension. In contrast, the interband LOCs in 2D and 3D are nonvanishing and share many similar properties. A universal and robust fixed point of interband LOCs appears at $ω=2μ$ no matter $d=2$ or $d=3$, which can be intuitively understood by the geometric structures of Fermi surface and energy resonance contour. The intraband LOCs and the carrier density for 2D and 3D tilted Dirac bands are both closely related to the geometric structure of Fermi surface and the cutoff of integration. The angular dependence of LOCs is found to characterize both spatial dimensionality and band tilting and the constant asymptotic background values of LOC reflect features of Dirac bands. The LOCs in the anisotropic tilted Dirac cone can be connected to its isotropic counterpart by a ratio that consists of Fermi velocities for both 2D and 3D. Most of the findings are universal for tilted Dirac materials and hence valid for a great many Dirac materials in the spatial dimensions of physical interest.
description: 22 pages, 7 figures
Heterogeneity for Increasing Performance and Reliability of Self-Reconfigurable Multi-Robot Organisms
Creators: name: Kernbach, S.
name: Schlachter, F.
name: Humza, R.
name: Liedke, J.
name: Popesku, S.
name: Russo, S.
name: Ranzani, T.
name: Manfredi, L.
name: Stefanini, C.
name: Matthias, R.
name: Schwarzer, Ch.
name: Girault, B.
name: Alschbach, P.
name: Meister, E.
name: Scholz, O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Homogeneity and heterogeneity represent a well-known trade-off in the design of modular robot systems. This work addresses the heterogeneity concept, its rationales, design choices and performance evaluation. We introduce challenges for self-reconfigurable systems, show advances of mechatronic and software design of heterogeneous platforms and discuss experiments, which intend to demonstrate usability and performance of this system.
De novo transcriptome assembly and annotation for gene discovery in Salamandra salamandra at the larval stage
Creators: name: Libro, Pietro
name: Chiocchio, Andrea
name: De Risky, Erika
name: Di Martino, Jessica
name: Bisconti, Roberta
name: Castrignanò, Tiziana
name: Canestrelli, Daniele
Publisher: name: F1000 Research Limited
Year: 2022

description: Dispersal is a key process in ecology and evolutionary biology, as it shapes biodiversity patterns over
 space and time. Mounting evidence is showing that attitude to disperse is unevenly distributed among
 individuals within populations, and that individual personality can have pivotal roles in the shaping of
 this attitude. Here, we assembled and annotated the first de novo transcriptome of the head tissues
 of Salamandra salamandra from individuals representative of distinct behavioral profiles. We
 obtained 1,153,432,918 reads, which were successfully assembled and annotated. The high-quality of
 the assembly was confirmed by three assembly validators. The alignment of contigs against the de
 novo transcriptome led to a mapping percentage higher than 94%. The homology annotation with
 DIAMOND led to 153,048 (blastx) and 95,942 (blastp) shared contigs, annotated on NR, Swiss-Prot
 and TrEMBL. The domain and site protein prediction led to 9850 GO-annotated contigs. This de
 novo transcriptome represents reliable reference for comparative gene expression studies between
 alternative behavioral types, and for whole transcriptome and proteome studies in amphibians.
Annexin A2 heterotetramer in monocyte invasiveness
Creators: name: Fogg, Darin Kurtis
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 175-195
description: Generation of plasmin is central to cell movement during wound healing, tumor metastasis, and inflammation, and is accelerated when plasminogen binds to cell surface receptors bearing lysine at their carboxy-terminus. The identity of the plasminogen receptor(s) responsible for regulating plasmin generation at the cell surface is currently unclear. In this study we found that the candidate plasminogen receptor, annexin A2 heterotetramer, accelerates the generation of plasmin by tissue-type plasminogen activator (tPA) and urokinase plasminogen activator (uPA), and that this acceleration is dependent upon lysine residues at the carboxy-terminus of the S100AI0 subunit of the heterotetramer. Physiological concentrations of plasma carboxypeptidases were capable of abrogating the effect on plasmin generation, by removal of both the ultimate and penultimate lysine residues from SIOOAI0, suggesting a possible mechanism of regulating plasmin formation in vivo. It was found that SIOOAI0 expression was induced in the monocytoid cell lines, THP-I and U937, by high cell culture density, which was dependent upon de novo proteinsynthesis. Increased cell surface expression of SIOOAI0 was induced upon differentiation of THP-I cells by exposure to phorbol 12-myristate 13acetate, interferon y, fibronectin, and 1α, 25-dihydroxyvitamin D3 and correlated with an increase in cellular plasminogen binding. Annexin A2 heterotetramer localized to discrete regions of the surface of a subpopulation of cells after polarization. This distribution overlapped to a great degree with that of the uPA receptor, which is known to redistribute to the leading edge of polarized cells. Importantly, plasminogen was also found to localize to these discrete membrane regions and also largely colocalized with SIOOAlO. Specific downregulation of SIOOAIO expression by small interfering RNA led to a decrease in extracellular levels of both S1OOAI0 and annexin A2, as well as a decrease in the rate of plasminogen activation on the surface of THP-I cells. In addition, invasion of both THP-l cells and K562 cells through physiological extracellular matrix was inhibited by siRNA-mediated reduction of SlOOAIO expression. Thus the current work establishes that S1OOAlOis a regulated cell surface protein that is directly involved in cellular plasmin production and contributes to the invasiveness of monocytoid cells.
Automatic extraction of materials and properties from superconductors scientific literature
Creators: name: Foppiano, Luca
name: de Castro, Pedro Baptista
name: Suarez, Pedro Ortiz
name: Terashima, Kensei
name: Takano, Yoshihiko
name: Ishii, Masashi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Superconductivity (cond-mat.supr-con)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The automatic extraction of materials and related properties from the scientific literature is gaining attention in data-driven materials science (Materials Informatics). In this paper, we discuss Grobid-superconductors, our solution for automatically extracting superconductor material names and respective properties from text. Built as a Grobid module, it combines machine learning and heuristic approaches in a multi-step architecture that supports input data as raw text or PDF documents. Using Grobid-superconductors, we built SuperCon2, a database of 40324 materials and properties records from 37700 papers. The material (or sample) information is represented by name, chemical formula, and material class, and is characterized by shape, doping, substitution variables for components, and substrate as adjoined information. The properties include the Tc superconducting critical temperature and, when available, applied pressure with the Tc measurement method.
description: 20 pages, 11 figures, 8 tables
Quasi-permutable normal operators in octonion Hilbert spaces and spectra
Creators: name: Ludkovsky, S. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 30G35, 17A05, 17A70, 47A10, 47L30, 47L60

description: Families of quasi-permutable normal operators in octonion Hilbert spaces are investigated. Their spectra are studied. Multiparameter semigroups of such operators are considered. A non-associative analog of Stone's theorem is proved.
description: 20 pages
Polar Field Reversal Observations with Hinode
Creators: name: Shiota, D.
name: Tsuneta, S.
name: Shimojo, M.
name: Sako, N.
name: Suárez, D. Orozco
name: Ishikawa, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have been monitoring yearly variation in the Sun's polar magnetic fields with the Solar Optical Telescope aboard {\it Hinode} to record their evolution and expected reversal near the solar maximum. All magnetic patches in the magnetic flux maps are automatically identified to obtain the number density and magnetic flux density as a function of th total magnetic flux per patch. The detected magnetic flux per patch ranges over four orders of magnitude ($10^{15}$ -- $10^{20}$ Mx). The higher end of the magnetic flux in the polar regions is about one order of magnitude larger than that of the quiet Sun, and nearly that of pores. Almost all large patches ($ \geq 10^{18}$ Mx) have the same polarity, while smaller patches have a fair balance of both polarities. The polarity of the polar region as a whole is consequently determined only by the large magnetic concentrations. A clear decrease in the net flux of the polar region is detected in the slow rising phase of the current solar cycle. The decrease is more rapid in the north polar region than in the south. The decrease in the net flux is caused by a decrease in the number and size of the large flux concentrations as well as the appearance of patches with opposite polarity at lower latitudes. In contrast, we do not see temporal change in the magnetic flux associated with the smaller patches ($ < 10^{18}$ Mx) and that of the horizontal magnetic fields during the years 2008--2012.
description: 21 pages, 7 figures. Accepted for publication in ApJ
"Toutes les nations du mond": building a multi-ethnic and multi-lingual faith community in Southern Alberta, 1905-1916
Creators: name: Foran, Timothy P.
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 101-109
description: Between 1905 and 1916, southern Alberta was home to a multi-ethnic and multi-lingual community of Catholics from across Europe and North America. This community was remarkable for its cohesiveness and its accommodation of ethno-linguistic diversity. The present study examines clerical efforts to sustain this community. As Alberta developed according to an Anglo-Protestant model, the Oblates of Mary Immaculate endeavoured to keep laypeople in the Catholic fold by providing them with a familiar linguistic and cultural setting. Oblates mastered foreign languages, adopted unfamiliar liturgy and discipline, recruited specialized clergy, and strove to suppress ethno-linguistic partisanship among the faithful. Although the erection of the Diocese of Calgary ( 1912) brought these missionaries into direct conflict with episcopal administration, the clergy remained united in its commitment to nurturing the multi-ethnic and multi-lingual character of the Catholic community.
Cold Neutron-Deuteron Capture and Wigner-SU(4) Symmetry
Creators: name: Lin, Xincheng
name: Singh, Hersh
name: Springer, Roxanne P.
name: Vanasse, Jared
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the cold neutron-deuteron ($nd$) capture cross section, $σ_{nd}$, to next-to-next-to leading order (NNLO) using the model-independent approach of pionless effective field theory (EFT($π\!\!\!/$)). At leading order we find $σ_{nd} = 0.315 \pm 0.217$ mb, while the experimental result is 0.508(15) mb [Jurney, Bendt and Browne in Phys. Rev. C 25, 2810 (1982)] for a laboratory neutron velocity of 2200 m/s. At next-to-leading-order (NLO), we show that $σ_{nd}$ is sensitive to the low energy constant (LEC), $L_1^{(0)}$, of the two-nucleon isovector current appearing at NLO. A fit of $L_1^{(0)}$ at NLO to the triton magnetic moment yields a NLO prediction of $σ_{nd}=0.393 \pm 0.164$ mb, where the error comes from propagating the error from the $L_1^{(0)}$ fit. At next-to-next-to-leading-order (NNLO), we find that a new three-nucleon magnetic moment counterterm is required for renormalization group invariance of both $σ_{nd}$ and the triton magnetic moment. Fitting the NNLO correction to $L_1^{(0)}$ (denoted $L_1^{(1)}$) to cold neutron-proton capture ($σ_{np}$) yields a NNLO prediction of $σ_{nd}=0.447 \pm 0.130$ mb, where the error comes from propagating the error from the $L_1^{(1)}$ fit. We also study different fittings of $L_1^{(0)}$ and $L_1^{(1)}$ to $σ_{np}$, $σ_{nd}$, and/or the triton magnetic moment. For example, fitting $L_1^{(0)}$ simultaneously to $σ_{np}$, $σ_{nd}$, and the triton magnetic moment at NLO, and fitting $L_1^{(1)}$ simultaneously to $σ_{np}$ and $σ_{nd}$ at NNLO, yields $σ_{nd} = 0.480 \pm 0.114$ mb and $0.511 \pm 0.042$ mb, respectively, where errors are naively estimated from EFT($π\!\!\!/$) power counting. In addition, we discuss how Wigner-SU(4) symmetry may alter the naive EFT($π\!\!\!/$) expansion of $σ_{nd}$.
description: 61 pages, 10 figures, version published in PRC. Some typos and errors in numerical results are fixed compared to the previous version
A 12 minute Orbital Period Detached White Dwarf Eclipsing Binary
Creators: name: Brown, Warren R.
name: Kilic, Mukremin
name: Hermes, J. J.
name: Prieto, Carlos Allende
name: Kenyon, Scott J.
name: Winget, D. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have discovered a detached pair of white dwarfs (WDs) with a 12.75 min orbital period and a 1,315 km/s radial velocity amplitude. We measure the full orbital parameters of the system using its light curve, which shows ellipsoidal variations, Doppler boosting, and primary and secondary eclipses. The primary is a 0.25 Msun tidally distorted helium WD, only the second tidally distorted WD known. The unseen secondary is a 0.55 Msun carbon-oxygen WD. The two WDs will come into contact in 0.9 Myr due to loss of energy and angular momentum via gravitational wave radiation. Upon contact the systems may merge yielding a rapidly spinning massive WD, form a stable interacting binary, or possibly explode as an underluminous supernova type Ia. The system currently has a gravitational wave strain of 10^-22, about 10,000 times larger than the Hulse-Taylor pulsar; this system would be detected by the proposed LISA gravitational wave mission in the first week of operation. This system's rapid change in orbital period will provide a fundamental test of general relativity.
description: 5 pages, accepted to ApJ Letters
Sequence entropy for amenable group actions
Creators: name: Liu, Chunlin
name: Yan, Kesong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study the sequence entropy for amenable group actions and investigate systematically spectrum and several mixing concepts via sequence entropy both in measure-theoretic dynamical systems and topological dynamical systems. Moreover, we use sequence entropy pairs to characterize weakly mixing and null systems.
Ensemble transport smoothing. Part I: Unified framework
Creators: name: Ramgraber, Maximilian
name: Baptista, Ricardo
name: McLaughlin, Dennis
name: Marzouk, Youssef
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Smoothers are algorithms for Bayesian time series re-analysis. Most operational smoothers rely either on affine Kalman-type transformations or on sequential importance sampling. These strategies occupy opposite ends of a spectrum that trades computational efficiency and scalability for statistical generality and consistency: non-Gaussianity renders affine Kalman updates inconsistent with the true Bayesian solution, while the ensemble size required for successful importance sampling can be prohibitive. This paper revisits the smoothing problem from the perspective of measure transport, which offers the prospect of consistent prior-to-posterior transformations for Bayesian inference. We leverage this capacity by proposing a general ensemble framework for transport-based smoothing. Within this framework, we derive a comprehensive set of smoothing recursions based on nonlinear transport maps and detail how they exploit the structure of state-space models in fully non-Gaussian settings. We also describe how many standard Kalman-type smoothing algorithms emerge as special cases of our framework. A companion paper (Ramgraber et al., 2023) explores the implementation of nonlinear ensemble transport smoothers in greater depth.
description: 33 pages, 13 figures, 4 pseudo-codes
A shorte treatyse of contemplacyon: the book of Margery Kempe in early English print culture
Creators: name: Foster, Allyson
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 115-127
description: Until 1934 the only evidence of The Book of Margery Kempe's existence was in the form of a short redaction of the Book entitled A Shorte Treatyse of Contemplacyon. This redaction was published in pamphlet form by Wynkyn de Worde in 1501, and again in 1521 when Henry Pepwell printed it as part of a small collection of devotional works, The Cell of Self-Knowledge. A Short Treatyse ofContemplacyon is comprised of twenty-eight brief passages that have been extracted from various sections of The Book of Margery Kempe and rearranged to form a practical guide for the process of contemplation. Because the treatise lacks the vivid detail and controversial elements of Margery Kempe's life, focusing instead on the desirability of private, inward forms of devotion, modem scholarship has tended to dismiss it as reductive and ahistorical. This thesis posits that A Shorte Treatyse of Contemplacyon deserves re-examination not only because it can help us speculate further on the audience of Kempe's work in the late fifteenth century, but because considering how The Book of Margery Kempe was reshaped, and to what purpose, can contribute to a more specific understanding of Kempe's place in early modem female piety and literary culture.
Ensemble transport smoothing. Part II: Nonlinear updates
Creators: name: Ramgraber, Maximilian
name: Baptista, Ricardo
name: McLaughlin, Dennis
name: Marzouk, Youssef
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Smoothing is a specialized form of Bayesian inference for state-space models that characterizes the posterior distribution of a collection of states given an associated sequence of observations. Ramgraber et al. (2023) proposes a general framework for transport-based ensemble smoothing, which includes linear Kalman-type smoothers as special cases. Here, we build on this foundation to realize and demonstrate nonlinear backward ensemble transport smoothers. We discuss parameterization and regularization of the associated transport maps, and then examine the performance of these smoothers for nonlinear and chaotic dynamical systems that exhibit non-Gaussian behavior. In these settings, our nonlinear transport smoothers yield lower estimation error than conventional linear smoothers and state-of-the-art iterative ensemble Kalman smoothers, for comparable numbers of model evaluations.
description: 36 pages, 18 figures, 3 pseudo-codes
Examining the Differential Risk from High-level Artificial Intelligence and the Question of Control
Creators: name: Kilian, Kyle A.
name: Ventura, Christopher J.
name: Bailey, Mark M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Artificial Intelligence (AI) is one of the most transformative technologies of the 21st century. The extent and scope of future AI capabilities remain a key uncertainty, with widespread disagreement on timelines and potential impacts. As nations and technology companies race toward greater complexity and autonomy in AI systems, there are concerns over the extent of integration and oversight of opaque AI decision processes. This is especially true in the subfield of machine learning (ML), where systems learn to optimize objectives without human assistance. Objectives can be imperfectly specified or executed in an unexpected or potentially harmful way. This becomes more concerning as systems increase in power and autonomy, where an abrupt capability jump could result in unexpected shifts in power dynamics or even catastrophic failures. This study presents a hierarchical complex systems framework to model AI risk and provide a template for alternative futures analysis. Survey data were collected from domain experts in the public and private sectors to classify AI impact and likelihood. The results show increased uncertainty over the powerful AI agent scenario, confidence in multiagent environments, and increased concern over AI alignment failures and influence-seeking behavior.
description: 44 pages
Der Name Bernkastel
Creators: name: Kentenich, Gottfried
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 3 Nr. 4 (1928): Trierer Zeitschrift : Vierteljahreshefte für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Die Münzprägung der Franken unter den merowingischen Königen
Creators: name: Suhle, Arthur
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 4 Nr. 1 (1929): Trierer Zeitschrift : Vierteljahreshefte für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Zur Abhandlung über das Frauenhaus zu Koblenz von Schüller
Creators: name: Keune, Johann Baptist
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 4 Nr. 1 (1929): Trierer Zeitschrift : Vierteljahreshefte für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Theoretical Conceptions in Musicology as a Potential Obstacle to Musical Comprehension
Creators: name: Hakobian, Levon
Publisher: name: Dipartimento delle Arti - Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: music theory; theoretical doctrines; reductionism

description: The core of the history of musical thought consists of large-scale doctrines striving to explain the multitude of observed phenomena in terms of immutable categories and universals. All such doctrines are based on the belief of their authors that all the complex and differentiated phenomena have their origins in simple principles. Accordingly, any music that cannot be convincingly reduced to these principles is either ignored or declared ‘abnormal’. Any doctrine inevitably stops before what in music is not quite ‘system-defined’. Though doctrines may point to ‘irregularities’, they can hardly justify them aesthetically. The by-effect of their influence is the growth of prejudices around anything that is new and unusual.
A huge array of musicological literature, developing the methodological principles of ‘big’ classical conceptions or propounding new conceptions that also claim to be scientific and universal, can hardly help the reader to clarify his perception of the unfamiliar or to discover new meanings in what is well known (the present paper illustrates this using several examples from different brands of musicology, both Russian and non-Russian). This arguably means that the ‘scientistic’ (reductionist) paradigm in musicology has been exhausted and the new, deeper knowledge of music has to be acquired through alternative, not strictly scientific – perhaps rather literary, openly subjective, authority-free – ways.
description: Musica Docta, Vol 5 (2015)
The Phenomenology of Quadratically Coupled Ultra Light Dark Matter
Creators: name: Banerjee, Abhishek
name: Perez, Gilad
name: Safronova, Marianna
name: Savoray, Inbar
name: Shalit, Aviv
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We discuss models of ultralight scalar Dark Matter (DM) with linear and quadratic couplings to the Standard Model (SM). In addition to studying the phenomenology of linear and quadratic interactions separately, we examine their interplay. We review the different experiments that can probe such interactions and present the current and expected future bounds on the parameter space. In particular, we discuss the scalar field solution presented in [A. Hees, O. Minazzoli, E. Savalle, Y. V. Stadnik and P. Wolf, Phys.Rev.D 98 (2018) 6, 064051], and extend it to theories that capture both the linear and the quadratic couplings of the DM field to the SM. Furthermore, we discuss the theoretical aspects and the corresponding challenges for natural models in which the quadratic interactions are of phenomenological importance.
description: 73 pages, 17 figures; v2: References added. Matches the JHEP accepted version
Diffondere la curiosità per l’arte
Creators: name: Petrušanskaja, Elena
Publisher: name: Dipartimento delle Arti - Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: educazione musicale; Russia

description: The paper, which was the opening speech to the conference Musicians and Musicologists as Teachers: How to Construct Musical Comprehension for Students, raises questions of central importance about the purpose of music teaching and the more general issues of cultural education: what is most important today for teaching? What do we mean by ‘transmission of knowledge’? Are we referring to the experience of music making? A specific position in relation to the values of culture, science and moral? Or a rational system of scientific knowledge based on past experience? In an age in which all sorts of information and materials can be easily retrieved online, the main goal of educational action becomes the teaching of appropriate methods for working on data, and the awakening of a sense of curiosity about art. The paper provides an updated map of music education institutions in Russia, dwelling on the specific features of the current education system in that country.
description: Musica Docta, Vol 5 (2015)
Half-Quantum Vortices in Thin Film of Superfluid $^3$He
Creators: name: Kondo, Kenji
name: Ohmi, Tetsuo
name: Nakahara, Mikio
name: Kawakami, Takuto
name: Tsutsumi, Yasumasa
name: Machida, Kazushige
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Stability of a half-quantum vortex (HQV) in superfluid $^3$He has been discussed recently by Kawakami, Tsutsumi and Machida in Phys. Rev. B {\bf 79}, 092506 (2009). We further extend this work here and consider the A$_2$ phase of superfluid $^3$He confined in thin slab geometry and analyze the HQV realized in this setting. Solutions of HQV and singly quantized singular vortex are evaluated numerically by solving the Ginzburg-Landau (GL) equation and respective first critical angular velocities are obtained by employing these solutions. We show that the HQV in the A$_2$ phase is stable near the boundary between the A$_2$ and A$_1$ phases. It is found that temperature and magnetic field must be fixed first in the stable region and subsequently the angular velocity of the system should be increased from zero to a sufficiently large value to create a HQV with sufficiently large probability. A HQV does not form if the system starts with a fixed angular velocity and subsequently the temperature is lowered down to the A$_2$ phase. It is estimated that the external magnetic field with strength on the order of 1 T is required to have a sufficiently large domain in the temperature-magnetic field phase diagram to have a stable HQV.
description: 5 pages, 5 figures
Almost conformal transformation in a four dimensional Riemannian manifold with an additional structure
Creators: name: Dokuzova, Iva
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15, 53B20

description: We consider a four dimensional Riemannian manifold M with a metric g and affinor structure q. The local coordinates of these tensors are circulant matrices. Their first orders are (A, B, C, B), A, B, C\in FM and (0, 1, 0, 0), respectively. We construct another metric \tilde{g} on M. We find the conditions for \tilde{g} to be a positively defined metric, and for q to be a parallel structure with respect to the Riemannian connection of g. Further, let x be an arbitrary vector in T_{p}M, where p is a point on M. Let ϕand ϕbe the angles between x and qx, x and q^{2}x with respect to g. We express the angles between x and qx, x and q^{2}x with respect to $\tilde{g}$ with the help of the angles $ϕ$ and ϕ. Also,we construct two series {ϕ_{n}}and {ϕ_{n}}. We prove that every of it is an increasing one and it is converge.
description: 5 pages. arXiv admin note: substantial text overlap with arXiv:1010.4975
Hunting ewinos and a light scalar of $Z_3$-NMSSM with a bino-like dark matter in top squark decays at the LHC
Creators: name: Datta, AseshKrishna
name: Guchait, Monoranjan
name: Roy, Arnab
name: Roy, Subhojit
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the prospects of a simultaneous hunt at the Large Hadron Collider (LHC) of relatively light electroweakinos and a singlet-like scalar of the $Z_3$-symmetric Next-to-Minimal Supersymmetric Standard Model ($Z_3$-NMSSM) in the cascade decays of not so heavy ($\lesssim 1.5$ TeV) top squarks that are produced in pairs at the LHC which characteristically involve the singlet-like states. We work in a scenario where the lightest (next-to-lightest) SUSY particle is bino (singlino)-like with a mass below 100 GeV ($\gtrsim 100$ GeV), whereas a pair of immediately heavier neutralinos and the lighter chargino are higgsino-like with masses in the range $\sim 500$ GeV -- 1 TeV. Further, the singlet-like scalar present in the spectrum provides a funnel for a rapid enough mutual annihilation of the LSP thus making the latter meet the experimental upper bound on its relic abundance. The scenario is motivated by its ability to offer a bino-like dark matter with such a mass unlike what is now disfavored in the MSSM while avoiding the stringent lower bounds from the LHC experiments on the masses of these involved particles and still remaining reasonably `natural'. We find that while a usual cut-based analysis (CBA) on LHC data worth 300 $\text{fb}^{-1}$ would be unable to discover such excitations, a multivariate analysis (MVA) can be reasonably sensitive to higgsino-like electroweakinos having masses $\gtrsim 650$ GeV when the lighter top squark has a mass $\gtrsim 1$ TeV. On the other hand, with 3000 $\text{fb}^{-1}$ of data these masses become accessible in a CBA while even an MVA on such a data set is unlikely to find these electroweakinos with masses around 1 TeV when the mass of the lighter top squark hits $\sim 1.5$ TeV.
description: 38 pages, 6 figures, 6 tables, Matched with the JHEP published version
Pressure induced renormalization of energy scales in the unconventional superconductor FeTe0.6Se0.4
Creators: name: Marty, Karol
name: Christianson, Andrew D.
name: Santos, Antonio M. dos
name: Sipos, Balasz
name: Matsubayashi, Kazuyuki
name: Uwatoko, Yoshiya
name: Fernandez-Baca, Jaime A.
name: Tulk, Christopher A.
name: Maier, Thomas A.
name: Sales, Brian C.
name: Lumsden, Mark D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have carried out a pressure study of the unconventional superconductor FeTe0.6Se0.4 up to 1.5 GPa by neutron scattering, resistivity and magnetic susceptibility measurements. We have extracted the neutron spin resonance energy and the superconducting transition temperature as a function of applied pressure. Both increase with pressure up to a maximum at ~1.3 GPa. This analogous qualitative behavior is evidence for a correlation between these two fundamental parameters of unconventional superconductivity. However, Tc and the resonance energy do not scale linearly and thus a simple relationship between these energies does not exist even in a single sample. The renormalization of the resonance energy relative to the transition temperature is here attributed to an increased hybridization. The present results appear to be consistent with a pressure-induced weakening of the coupling strength associated with the fundamental pairing mechanism.
description: 5 pages, 4 figures
The structural controls on Karst Development, Oparure Block, North Island, New Zealand
Creators: name: Frostad, Colin Joel
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 129-135
description: The pages are oversized.
description: Some pages are in colour.
description: Te Kuiti Group limestones and Mahoenui Group mudstones crop out extensively on the Oparure Block, souther Waikato District, New Zealand. Reactivation of major north-south oriented normal faults, including the Waipa Fault, to an oblique-slip motion has resulted in a consisten set of Riedel fractures in the Te Kiti Group limestones. Large discontinuous fracture breccias form along first-order Riedel faults. The Mangawhitikau Stream drains the Oparure Block from west to east, down the regional dip on the Te Kuiti Group of a few degrees to the east. As groundwater interacted with the Te Kuiti Group limestones, karst development began. Along with the epikarst zone a shaft and conduit zone was formed primarily along first- and second-order Riedel fractures. By the time the Mangawhitkau Stream eroded down to the Te Kuiti Group many open conduits were present in the limestone and captured the stream flow, resulting in the formation of caves.
Additional file 1 of Signs of a new geomagnetic jerk between 2019 and 2020 from Swarm and observatory data
Creators: name: Pavón-Carrasco, F. Javier
name: Marsal, Santiago
name: Campuzano, Saioa A.
name: Torta, J. Miquel
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Additional file 1. The 2020-jerk in geomagnetic observatory and Swarm data. Figure S1. Monthly means of the East geomagnetic component Y (yellow dots) and the estimations from CHAOS-7.7 model at the same locations (red and blue lines). For an appropriate comparison, the average Y values for the whole time interval have been removed (see text for details). Note that after August 2020 the estimations from CHAOS-7.7 (blue lines) are likely caused by the model regularization instead of the data (see “Discussion: a global view from geomagnetic models” Section of the main text for more details). Figure S2. Double linear fit of the Y-component SV at geomagnetic observatories leading to the values of Table 1 (see main text). a and b refer to the 2017-jerk, while c through g correspond to the 2020-jerk. Figure S3. Yellow dots: SV of the East component Y from Swarm-A data relocated at 440 km altitude over the indicated observatory locations (see main text for details). Red and blue curves: SV estimation from CHAOS-7.7 model. Note that after August 2020 the changes in the curves (blue lines) from CHAOS-7.7 are likely caused by the model regularization instead of the data (see “Discussion: a global view from geomagnetic models” Section of the main text for more details). Figure S4. SA power for each harmonic coefficient from the CHAOS-7.7 model until degree n = 8 at the CMB. Vertical blue bands indicate the epochs of the reported jerks. Note that after mid-2020 the SA power curves from CHAOS-7.7 are biased by the model parametrization instead of the geomagnetic data providing unreliable values (see “Discussion: a global view from geomagnetic models” Section of the main text for more details).
A strategy on prion AGAAAAGA amyloid fibril molecular modelling
Creators: name: Zhang, Jiapu
name: Liu, David D. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Biomolecules (q-bio.BM)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy are two powerful tools to determine the protein 3D structure. However, not all proteins can be successfully crystallized, particularly for membrane proteins. Although NMR spectroscopy is indeed very powerful in determining the 3D structures of membrane proteins, same as X-ray crystallography, it is still very time-consuming and expensive. Under many circumstances, due to the noncrystalline and insoluble nature of some proteins, X-ray and NMR cannot be used at all. Computational approaches, however, allow us to obtain a description of the protein 3D structure at a submicroscopic level. To the best of the authors' knowledge, there is little structural data available to date on the AGAAAAGA palindrome in the hydrophobic region (113-120) of prion proteins, which falls just within the N-terminal unstructured region (1-123) of prion proteins. Many experimental studies have shown that the AGAAAAGA region has amyloid fibril forming properties and plays an important role in prion diseases. Due to the noncrystalline and insoluble nature of the amyloid fibril, little structural data on the AGAAAAGA is available. This paper introduces a simple molecular modelling strategy to address the 3D atomic-resolution structure of prion AGAAAAGA amyloid fibrils. Atomic-resolution structures of prion AGAAAAGA amyloid fibrils got in this paper are useful for the drive to find treatments for prion diseases in the field of medicinal chemistry.
f(R) Theories of Supergravities and Pseudo-supergravities
Creators: name: Liu, Haishan
name: Lu, H.
name: Wang, Zhao-Long
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 present f(R) theories of ten-dimensional supergravities, including the fermionic sector up to the quadratic order in fermion fields. They are obtained by performing the conformal scaling on the usual supergravities to the f(R) frame in which the dilaton becomes an auxiliary field and can be integrated out. The f(R) frame coincides with that of M-theory, D2-branes or NS-NS 5-branes. We study various BPS p-brane solutions and their near-horizon AdS \times sphere geometries in the context of the f(R) theories. We find that new solutions emerge with global structures that do not exist in the corresponding solutions of the original supergravity description. In lower dimensions, We construct the f(R) theory of N=2, D=5 gauged supergravity with a vector multiplet, and that for the four-dimensional U(1)^4 gauged theory with three vector fields set equal. We find that some previously-known BPS singular "superstars" become wormholes in the f(R) theories. We also construct a large class of f(R) (gauged) pseudo-supergravities. In addition we show that the breathing mode in the Kaluza-Klein reduction of Gauss-Bonnet gravity on S^1 is an auxiliary field and can be integrated out.
description: Latex, 46 pages