cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cosmic confusion
Creators: name: Magueijo, J. C. R.
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose to minimise the cosmic confusion between Gaussian and non Gaussian theories by investigating the structure in the m's for each multipole of the cosmic radiation temperature anisotropies. We prove that Gaussian theories are (nearly) the only theories which treat all the m's equally. Hence we introduce a set of invariant measures of ``m-preference'' to be seen as non-Gaussianity indicators. We then derive the distribution function for the quadrupole ``m-preference'' measure in Gaussian theories. A class of physically motivated toy non Gaussian theories is introduced as an example. We show how the quadrupole m-structure is crucial in reducing the confusion between these theories and Gaussian theories.
Improving yarn imperfection in polyester cotton blends by optimizing flat-to-cylinder setting
Creators: name: Dubale, Mesay
Publisher: name: Zenodo
Year: 2023
Subjects: Yarn Imperfection
card setting
Yarn quality

description: In textile Industries, processing parameters, and machinery conditions play a decisive role in deciding the quality of the yarn produced.  The objective of this study is to improve the quality of the yarn by adjusting the setting between revolving flats and the Cylinder, while the other machine and process parameters were kept constant. Five points between flat and Cylinder were changed into 3.5,3, 2.5, 2.5, and 2.5 mm and have been used to produce 21 Ne Polycotton blended yarns. The improvement in the yarn quality due to the new setting is assessed. It is found that the thin place, thick place, neps and unevenness in the  yarn has  reduced considerably with this new setting. The total imperfections/km (IPI) of  30/70 Polycotton yarn improved  from 1579/km to 727/km. The clearer cut per 100 km after the new setting has shown a significant improvement by having lower number of cuts and better working performance.
MPEC 2025-J02 : 2025 DY62
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 DY62

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Recovering quantum gates from few average gate fidelities
Creators: name: Roth, Ingo
name: Kueng, Richard
name: Kimmel, Shelby
name: Liu, Yi-Kai
name: Gross, David
name: Eisert, Jens
name: Kliesch, Martin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Characterising quantum processes is a key task in and constitutes a challenge for the development of quantum technologies, especially at the noisy intermediate scale of today's devices. One method for characterising processes is randomised benchmarking, which is robust against state preparation and measurement (SPAM) errors, and can be used to benchmark Clifford gates. A complementing approach asks for full tomographic knowledge. Compressed sensing techniques achieve full tomography of quantum channels essentially at optimal resource efficiency. So far, guarantees for compressed sensing protocols rely on unstructured random measurements and can not be applied to the data acquired from randomised benchmarking experiments. It has been an open question whether or not the favourable features of both worlds can be combined. In this work, we give a positive answer to this question. For the important case of characterising multi-qubit unitary gates, we provide a rigorously guaranteed and practical reconstruction method that works with an essentially optimal number of average gate fidelities measured respect to random Clifford unitaries. Moreover, for general unital quantum channels we provide an explicit expansion into a unitary 2-design, allowing for a practical and guaranteed reconstruction also in that case. As a side result, we obtain a new statistical interpretation of the unitarity -- a figure of merit that characterises the coherence of a process. In our proofs we exploit recent representation theoretic insights on the Clifford group, develop a version of Collins' calculus with Weingarten functions for integration over the Clifford group, and combine this with proof techniques from compressed sensing.
description: 26 pages, 3 figures. V2: Incomplete funding information corrected and minor improvements of the presentation
RETURN To an Order of the House for a Return showing the fees and emoluments received by all sheriffs during the financial year ending 30th June, 1896; such Return to include all fees received by them, their deputies and bailiffs, from procedure under executions, chattel mortgages, bills of sale, and distress warrants.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Uncertainties in the Lightest $CP$ Even Higgs Boson Mass Prediction in the Minimal Supersymmetric Standard Model: Fixed Order Versus Effective Field Theory Prediction
Creators: name: Allanach, B. C.
name: Voigt, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We quantify and examine the uncertainties in predictions of the lightest $CP$ even Higgs boson pole mass $M_h$ in the Minimal Supersymmetric Standard Model (MSSM), utilising current spectrum generators and including some three-loop corrections. There are two broadly different approximations being used: effective field theory (EFT) where an effective Standard Model (SM) is used below a supersymmetric mass scale, and a fixed order calculation, where the MSSM is matched to QCD$\times$QED at the electroweak scale. The uncertainties on the $M_h$ prediction in each approach are broken down into logarithmic and finite pieces. The inferred values of the stop mass parameters are sensitively dependent upon the precision of the prediction for $M_h$. The fixed order calculation appears to be more accurate below a supersymmetry (SUSY) mass scale of $M_S \approx 1.2$ TeV, whereas above this scale, the EFT calculation is more accurate. We also revisit the range of the lightest stop mass across fine-tuned parameter space that has an appropriate stable vacuum and is compatible with the lightest $CP$ even Higgs boson $h$ being identified with the one discovered at the ATLAS and CMS experiments in 2012; we achieve a maximum value of $\sim 10^{11}$ GeV.
description: 10 pages, 5 figures
Renormalization group trajectories from resonance factorized S-matrices
Creators: name: Martins, Marcio J.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose and investigate a large class of models possessing resonance factorized S-matrices. The associated Casimir energy describes a rich pattern of renormalization group trajectories related to flows in the coset models based on the simply laced Lie Algebras. From a simplest resonance S-matrix, satisfying the ``$ϕ^3$-property'', we predict new flows in non-unitary minimal models.
description: (7 pages) (no figures included)
Localized modes in the Gross-Pitaevskii equation with a parabolic trapping potential and a nonlinear lattice pseudopotential
Creators: name: Alfimov, G. L.
name: Gegel, L. A.
name: Lebedev, M. E.
name: Malomed, B. A.
name: Zezyulin, D. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study localized modes (LMs) of the one-dimensional Gross-Pitaevskii/nonlinear Schrödinger equation with a harmonic-oscillator (parabolic) confining potential, and a periodically modulated coefficient in front of the cubic term (nonlinear lattice pseudopotential). The equation applies to a cigar-shaped Bose-Einstein condensate loaded in the combination of a magnetic trap and an optical lattice which induces the periodic pseudopotential via the Feshbach resonance. Families of stable LMs in the model feature specific properties which result from the interplay between spatial scales introduced by the parabolic trap and the period of the nonlinear pseudopotential. Asymptotic results on the shapes and stability of LMs are obtained for small-amplitude solutions and in the limit of a rapidly oscillating nonlinear pseudopotential. We show that the presence of the lattice pseudopotential may result in: (i) creation of new LM families which have no counterparts in the case of the uniform nonlinearity; (ii) stabilization of some previously unstable LM species; (iii) evolution of unstable LMs into a pulsating mode trapped in one well of the lattice pseudopotential.
description: to be published in Commun. Nonlin. Sci. Numer. Simul
Ages and metallicities of faint red galaxies in the Shapley Supercluster
Creators: name: Smith, Russell J.
name: Lucey, John R.
name: Hudson, Michael J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results on the stellar populations of 232 quiescent galaxies in the Shapley Supercluster, based on spectroscopy from the AAOmega spectrograph at the AAT. The key characteristic of this survey is its coverage of many low-luminosity objects (sigma ~ 50 km/s), with high signal-to-noise (~45 per Angstrom). Balmer-line age estimates are recovered with ~25% precision even for the faintest sample members. We summarize the observations and absorption line data, and present correlations of derived ages and metallicities with mass and luminosity. We highlight the strong correlation between age and alpha-element abundance ratio, and the anti-correlation of age and metallicity at fixed mass, which is shown to extend into the low-luminosity regime.
description: Four pages, three figures; To appear in Proceedings of IAU Symp. 245 "Formation and Evolution of Galaxy Bulges", (Oxford, July 16-20 2007), Eds. Martin Bureau, Lia Athanassoula, and Beatriz Barbuy
Coffee Lecture: High Performance Computing und FDM.
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2021
Subjects: FDM
Coffee Lecture UB Hildesheim
Coffee Lecture
RDM

description: Coffee Lecture:

 High Performance Computing und FDM.

 Mittwoch, 20. April 2022 um 12:30 Uhr, ca. 30 min

 BigBlueButton (BBB)  Referent: Prof. Dr. Ramin Yahyapour (Geschäftsführer der GWDG, IT in der Wissenschaft)

 Thema: High Performance Computing und FDM Eine Anmeldung zu den Coffee Lectures ist nicht erforderlich. Link: https://bbb.uni-hildesheim.de/b/ann-i2r-z5l-fc8
Speeding Up Gibbs Sampling in Probabilistic Optical Flow
Creators: name: Dongzhen  Piao
Publisher: name: Carnegie Mellon University
Year: 2014
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In today’s machine learning research, probabilistic graphical models are used extensively to model complicated systems with uncertainty, to help understanding of the problems, and to help inference and predict unknown events. For inference tasks, exact inference methods such as junction tree algorithms exist, but they suffer from exponential growth of cluster size and thus is not able to handle large and highly connected graphs. Approximate inference methods do not try to find exact probabilities, but rather give results that improve as algorithm runs. Gibbs sampling, as one of the approximate inference methods, has gained lots of traction and is used extensively in inference tasks, due to its ease of understanding and implementation. However, as problem size grows, even the faster algorithm needs a speed boost to meet application requirement. The number of variables in an application graphical model can range from tens of thousands to billions, depending on problem domain. The original sequential Gibbs sampling may not return satisfactory result in limited time. Thus, in this thesis, we investigate in ways to speed up Gibbs sampling. We will study ways to do better initialization, blocking variables to be sampled together, as well as using simulated annealing. These are the methods that modifies the algorithm itself. We will also investigate in ways to parallelize the algorithm. An algorithm is parallelizable if some steps do not depend on other steps, and we will find out such dependency in Gibbs sampling. We will discuss how the choice of different hardware and software architecture will affect the parallelization result. We will use optical flow problem as an example to demonstrate the various speed up methods we investigated. An optical flow method tries to find out the movements of small image patches between two images in a temporal sequence. We demonstrate how we can model it using probabilistic graphical model, and solve it using Gibbs sampling. The result of using sequential Gibbs sampling is demonstrated, with comparisons from using various speed up methods and other optical flow methods.
Large-angle Polarization of the Cosmic Microwave Background Radiation and Reionization
Creators: name: Ng, Ka Lok
name: Ng, Kin-Wang
name: pages, 19
name: Latex
name: figures, 10
name: request, available upon
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the effect of matter reionization on the large-angular-scale anisotropy and polarization of the cosmic microwave background radiation (CMBR) in the standard CDM model. We separate three cases in which the anisotropy is induced by pure scalar, pure tensor, and mixed metric perturbations respectively. It is found that, if reionization occurs early enough, the polarization can reach a detectable level of sequentially $6\%$, $9\%$, and $6.5\%$ of the anisotropy. In general, a higher degree of polarization implies a dominant contribution from the tensor mode or reionization at high redshift. Since early reionization will suppress small-scale CMBR anisotropies and polarizations significantly, measuring the polarization on few degree scales can be a direct probe of the reionization history of the early universe.
description: Changes in the revised version: 1. Below Eq. (2), we demonstrate the method of our numerical work, by adding the evolution equations for the Legendre coefficents for both the scalar and tensor mode pertubations. 2. Below Eq. (9), we added a paragraph on discussing the basis we employed in computing the polarization correlation function. 3. In Sec. 4, we have rewritten the first and second paragraphs, where we illustrate how to the explain the discrepancies with the previous work
Oscillo-Emissive Effect: A Temporal Oscillation  Theory Approach to Sonoluminescence
Creators: name: Marques Rodrigues, Daniel
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Sonoluminescence
subject: Temporal Oscillation Theory
subject: Nonlinear Modulation
subject: Quantum physics
subject: Quantum gases
subject: Microscopy, Acoustic
subject: Acoustics

description: Sonoluminescence is a phenomenon in which small gas bubbles in a liquid, subjected to intense sound waves, emit brief pulses of light upon rapid collapse. Conventional models suggest that this effect occurs due to the extreme heating of the internal gas, ionization, and thermal radiation.

This study introduces an alternative explanation based on the Temporal Oscillation Theory (TOT), which describes fundamental particles as quantized states in time. We demonstrate that TOT, without requiring extreme thermal conditions or ionization, can mathematically predict the emitted light spectrum, offering a fundamental explanation for sonoluminescence. The theoretical calculations align closely with experimental data, suggesting that the phenomenon emerges from forced suppression of temporal oscillations.

The work discusses quantum implications, explores connections to vacuum energy fluctuations, and compares results with established models, such as thermal radiation and plasma formation theories. Finally, we propose experimental tests to validate TOT by analyzing variations in emission spectra as a function of ultrasound frequency.
The geometric distance and binary orbit of PSR B1259-63
Creators: name: Miller-Jones, James C. A.
name: Deller, Adam T.
name: Shannon, Ryan M.
name: Dodson, Richard
name: Moldón, Javier
name: Ribó, Marc
name: Dubus, Guillaume
name: Johnston, Simon
name: Paredes, Josep M.
name: Ransom, Scott M.
name: Tomsick, John A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The pulsar/massive star binary system PSR B1259-63 / LS 2883 is one of the best-studied gamma-ray binaries, a class of systems whose bright gamma-ray flaring can provide important insights into high-energy physics. Using the Australian Long Baseline Array we have conducted very long baseline interferometric observations of PSR B1259-63 over 4.4 years, fully sampling the 3.4-year orbital period. From our measured parallax of $0.38\pm0.05$ mas we use a Bayesian approach to infer a distance of $2.6^{+0.4}_{-0.3}$ kpc. We find that the binary orbit is viewed at an angle of $154\pm3$ degrees to the line of sight, implying that the pulsar moves clockwise around its orbit as viewed on the sky. Taking our findings together with previous results from pulsar timing observations, all seven orbital elements for the system are now fully determined. We use our measurement of the inclination angle to constrain the mass of the stellar companion to lie in the range 15-31$M_{\odot}$. Our measured distance and proper motion are consistent with the system having originated in the Cen OB1 association and receiving a modest natal kick, causing it to have moved $\sim$8 pc from its birthplace over the past $\sim3\times10^5$ years. The orientation of the orbit on the plane of the sky matches the direction of motion of the X-ray synchrotron-emitting knot observed by the Chandra X-ray Observatory to be moving away from the system.
description: Accepted by MNRAS. v2 is the journal-accepted version. Changes since v1 include a Bayesian approach to distance estimation, and discussion of Gaia DR2 results. 13 pages, 7 figures, 3 tables
Constructing a Network Science Toolchain for Analyzing Network Traffic
Creators: name: Tse, Adam
Publisher: name: Carnegie Mellon University
Year: 2018
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: For this thesis, a toolchain was designed that aimed to process network traffic to identify host and event behavior. Network traffic is difficult for network administrators to analyze because both the area of responsibility and distribution of external actors are very large when protecting an enterprise network. Having a process that converts streaming network data into actionable intelligence greatly improves the operational capability of network administrators. The process consisted of three phases: Netflow Collection, Network Analysis, and Actionable Classification which were validated using a series of experiments. The following experiments were performed: a comparison between behavior of normal weeks and a flash crowd incident, a comparison of behavior among functional groups within the corporation, an analysis of hosts reported for abusive behavior, and a classification method for identifying hosts by behavior. The toolchain revolved around using network science methods to gather, process, and measure data. Even though network science is typically used to analyze social network data, the similarities in size and structure of social network data and netflow data make it viable for similar analysis.
Poster: Coffee Lectures zum Forschungsdatenmanagement der Stiftung Universität Hildesheim (Universitätsbibliothek Hildesheim), Sommersemester 2022.
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2021
Subjects: FDM
Forschungsdaten
Forschungsdatenmanagement
RDM
Research Data Management
Research Data
Open Science
UB Hildesheim
Universitätsbibliothek Hildesheim

description: Die Nachhaltigkeit von Forschungsdaten, das Teilen von Forschungsdaten oderPublikationen von Datenbeständengewinnenzunehmend an Bedeutung. Forscherinnen und Forscherdiskutierensowohl die Chancenalsauch die Risiken von "Open Data", die Herausforderungen des Datenschutzes und der Forschungsethik. Kurzvorträge (ca. 40 Minuten) und Diskussion der Universitätsbibliothek zum Forschungsdatenmanagement.
Conditions for anti-Zeno effect observation in free-space atomic radiative decay
Creators: name: Lassalle, Emmanuel
name: Champenois, Caroline
name: Stout, Brian
name: Debierre, Vincent
name: Durt, Thomas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Frequent measurements can modify the decay of an unstable quantum state with respect to the free dynamics given by Fermi's golden rule. In a landmark article, Nature 405, 546 (2000), Kofman and Kurizki concluded that in quantum decay processes, acceleration of the decay by frequent measurements, called the quantum anti-Zeno effect (AZE), appears to be ubiquitous, while its counterpart, the quantum Zeno effect, is unattainable. However, up to now there have been no experimental observations of the AZE for atomic radiative decay (spontaneous emission) in free space. In this work, making use of analytical results available for hydrogen-like atoms, we find that in free space, only non-electric-dipolar transitions should present an observable AZE, revealing that this effect is consequently much less ubiquitous than first predicted. We then propose an experimental scheme for AZE observation, involving the electric quadrupole transition between D 5/2 and S 1/2 in the heaviest alkali-earth ions Ca + and Sr +. The proposed protocol is based on the STIRAP technique which acts like a dephasing quasi-measurement.
ВЛИЯНИЕ ЦИФРОВИЗАЦИИ НА РЫНОК ТРУДА В УСЛОВИЯХ "ЗЕЛЕНОЙ" ЭКОНОМИКИ
Creators: name: Исматиллаева, Роза
Publisher: name: Zenodo
Year: 2025

description: В статье исследуется взаимосвязь между цифровизацией и "зеленой" экономикой, а также их совместное воздействие на рынок труда. Рассматриваются ключевые направления цифровой трансформации, способствующие экологически устойчивому развитию, и их влияние на занятость и структуру рабочих мест.
A VLT/MUSE galaxy survey towards QSO Q1410: looking for a WHIM traced by BLAs in inter-cluster filaments
Creators: name: Pessa, Ismael
name: Tejos, Nicolas
name: Barrientos, L. Felipe
name: Werk, Jessica
name: Bielby, Richard
name: Padilla, Nelson
name: Morris, Simon L.
name: Prochaska, J. Xavier
name: Lopez, Sebastian
name: Hummels, Cameron
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Cosmological simulations predict that a significant fraction of the low-$z$ baryon budget resides in large-scale filaments in the form of a diffuse plasma at temperatures $T \sim 10^{5} - 10^{7}$ K. However, direct observation of this so-called warm-hot intergalactic medium (WHIM) has been elusive. In the $Λ$CDM paradigm, galaxy clusters correspond to the nodes of the cosmic web at the intersection of several large-scale filamentary threads. In previous work, we used HST/COS data to conduct the first survey of broad HI Ly$α$ absorbers (BLAs) potentially produced by WHIM in inter-cluster filaments. We targeted a single QSO, namely Q1410, whose sight-line intersects $7$ independent inter-cluster axes at impact parameters $<3$ Mpc (co-moving), and found a tentative excess of a factor of ${\sim}4$ with respect to the field. Here, we further investigate the origin of these BLAs by performing a blind galaxy survey within the Q1410 field using VLT/MUSE. We identified $77$ sources and obtained the redshifts for $52$ of them. Out of the total sample of $7$ BLAs in inter-cluster axes, we found $3$ without any galaxy counterpart to stringent luminosity limits ($\sim 4 \times 10^{8}$ L$_{\odot}$ ${\sim} 0.01$ L$_{*}$), providing further evidence that these BLAs may represent genuine WHIM detections. We combined this sample with other suitable BLAs from the literature and inferred the corresponding baryon mean density for these filaments in the range $Ω^{\rm fil}_{\rm bar}= 0.02-0.04$. Our rough estimates are consistent with the predictions from numerical simulations but still subject to large systematic uncertainties, mostly from the adopted geometry, ionization corrections and density profile.
description: Accepted in MNRAS
Poster zur Coffee Lecture im FDM mit Dr. Jens Klump (Leiter Geoscience Analytics Team in CSIRO): Born digital: Metadatenerfassung im Gelände und im Labor.
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2021
Subjects: FDM
Forschungsdatenmanagement
Open Science
RDM
Research Data Management

description: ONLINE Coffee Lectures - Born digital: Metadatenerfassung im Gelände und im Labor Mittwoch, 04. Mai 2022 um 12:30 Uhr Eine Veranstaltungreihe der Universitätsbibliothek Hildesheim. Wo? Die Veranstaltung wird mit dem Webkonferenzsystem auf Basis von BigBlueBotton bereitgestellt: https://bbb.uni-hildesheim.de/b/ann-i2r-z5l-fc8 Wann? ab 12:30 Uhr Thema: Born digital: Metadatenerfassung im Gelände und im Labor Referent*in: Dr. Jens Klump (Leiter Geoscience Analytics Team in CSIRO Info: Coffee & Knowledge? Kurzvorträge (40 Minuten) in der Mittagspause bei einer Tasse Kaffee oder Tee. Immer mittwochs um 12:30 Uhr. Weitere Termine: 11.05.2022 - Institutionelle Infrastrukturen für offene Wissenschaft an der Universität Hildesheim 18.05.2022 - Go FAIR, go UNITE 08.06.2022 - AuROA - Autor*innen und Rechtssicherheit für Open Access
The Gravitational Field of String Matter
Creators: name: Fabbrichesi, M.
name: Iengo, R.
name: Roland, K.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the scattering of a massless and neutral test particle in the gravitational field of a body (the string star) made of a large number of scalar states of the superstring. We consider two cases, the one in which these states are neutral string excitations massive already in ten dimensions and the one in which their masses (and charges) originate in the process of compactification on tori. A perturbative calculation based on superstring amplitudes gives us the deflection angle up to the second order in Newton's constant. A comparison with field theory explicitly shows which among the various massless fields of the superstring give a contribution to the scattering process. In both cases, the deflection angle is smaller than the one computed in general relativity. The perturbative series can be resummed by finding the exact solution to the classical equations of motion of the corresponding low-energy action. The space-time metric of our two examples of string stars has no horizon.
description: 40 PAGES
Spectral Probablistic Modeling and Applications to Natural Language Processing
Creators: name: Ankur  Parikh
Publisher: name: Carnegie Mellon University
Year: 2015
Subjects: subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: Probabilistic modeling with latent variables is a powerful paradigm that has led to key advances in many applications such natural language processing, text mining, and computational biology. Unfortunately, while introducing latent variables substantially increases representation power, learning and modeling can become considerably more complicated. Most existing solutions largely ignore non-identifiability issues in modeling and formulate learning as a nonconvex optimization problem, where convergence to the optimal solution is not guaranteed due to local minima. In this thesis, we propose to tackle these problems through the lens of linear/multi-linear algebra. Viewing latent variable models from this perspective allows us to approach key problems such as structure learning and parameter learning using tools such as matrix/tensor decompositions, inversion, and additive metrics. These new tools enable us to develop novel solutions to learning in latent variable models with theoretical and practical advantages. For example, our spectral parameter learning methods for latent trees and junction trees are provably consistent, local-optima-free, and 1-2 orders of magnitude faster thanEMfor large sample sizes. In addition, we focus on applications in Natural Language Processing, using our insights to not only devise new algorithms, but also to propose new models. Our method for unsupervised parsing is the first algorithm that has both theoretical guarantees and is also practical, performing favorably to theCCMmethod of Klein and Manning. We also developed power low rank ensembles, a framework for language modeling that generalizes existing n-gram techniques to non-integer n. It consistently outperforms state-of-the-art Kneser Ney baselines and can train on billion-word datasets in a few hours.
Energetic consequences of prey type in little penguins (Eudyptula minor)
Creators: name: Petrovski, Natalie
name: Sutton, Grace
name: Arnould, John PY
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4104
subject: Environmental management
classificationCode: 319902
subject: Global change biology

description: Investigation of foraging decisions can help understand how animals efficiently gather and exploit food. Prey chase and handling times are important aspects of foraging efficiency, influencing the net energy gain derived from a prey item. However, these metrics are often overlooked in studies of foraging behaviour due to the difficulty in observing them. The present study used animal-borne cameras to investigate the type, duration and energetic consequences of predator-prey interactions in little penguins (Eudyptula minor) (n = 32) from two colonies in Bass Strait, south-eastern Australia. A total of seven main prey items were observed and consumed by little penguins. Penguins were observed to consume prey types and use strategies that have not been previously documented. These included consumption of bellowsfish (Macroramphosus scolopax) and other fish species captured sheltering around jellyfish or extracted dead from the tentacles. Chase and handling time varied with prey type and lasted approximately 2 s for most prey. Profitability varied among prey types, with a greater amount of low profitable prey being consumed, suggesting a trade-off between minimizing energetic costs, and increasing capture rates. These results highlight the use of animal-borne video data loggers to further understand the foraging adaptations of important predators in the marine environment.
Dimer-dimer zero crossing and dilute dimerized liquid in a one-dimensional mixture
Creators: name: Pricoupenko, A.
name: Petrov, D. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider the system of dimers formed in a one-dimensional mass-balanced Bose-Bose mixture of species $σ=\uparrow$, $\downarrow$ with attractive interspecies and repulsive intraspecies contact interactions. In the plane parametrized by the ratios of the coupling constants $g_{\uparrow\uparrow}/|g_{\uparrow\downarrow}|$ and $g_{\downarrow\downarrow}/|g_{\uparrow\downarrow}|$ we trace out the curve where the dimer-dimer interaction switches from attractive to repulsive. We find this curve to be significantly (by more than a factor of 2) shifted towards larger $g_{σσ}$ (or smaller $|g_{\uparrow\downarrow}|$) compared to the mean-field stability boundary $g_{\uparrow\uparrow}g_{\downarrow\downarrow}=g_{\uparrow\downarrow}^2$. For a weak dimer-dimer attraction we predict a dilute dimerized liquid phase stabilized against collapse by a repulsive three-dimer force.
description: published version
RETURN To an Address presented to His Honour the Lieutenant-Governor, requesting him to cause to be laid before the House copies of any further correspondence which has passed between his Government and the Government of the Dominion of Canada, with reference to the question of the removal of the Indians from the Songhees Reserve, since the Return dated the 17th March, 1897, was presented to the House.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
6. Veranstaltungsreihe Coffee Lectures im Forschungsdatenmanagement, Universität Hildesheim. Wintersemester 2021/22.
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2021
Subjects: RDM
Research Data Management
Coffee Lectures
Open Science
Digital Shift
Digital Shift in Bibliotheken
Universitätsbibliotheken

description: Poster zur 6. Veranstaltungsreihe Coffee Lectures im Forschungsdatenmanagement, Universität Hildesheim. Wintersemester 2021/22. Die Universität Hildesheim informiert in einer neuen Veranstaltungsreihe im Wintersemester 2021/22 über das Forschungsdatenmanagement. Der Umgang mit Forschungsdaten ist essentiell für die wissenschaftliche Tätigkeit. In „Coffee Lectures“ und Workshops kommen Studierende, Forscherinnen und Forscher mit Expertinnen und Experten aus der Fachcommunity und anderen Vertretern der Universitäten und externen Fachleuten zusammen. Hilfreiche Beispiele für Forscherinnen und Forscher veranschaulichen, wie bereits andere ihr Datenmanagement organisiert haben und was sich dabei bewährt hat und was nicht. Die „Coffee Lectures“ (Dauer etwa 40 Minuten) und Workshops finden mehrmals im Semester statt. Eine Anmeldung ist nicht erforderlich, teilnehmen können alle.
XIZMAT KO'RSATISH KORXONALARI FAOLIYATIDA  MUVAFFAQIYATLI STRATEGIYA YARATISH TAMOYILLARI
Creators: name: Umurova Mohira Askarboy qizi SamISI tayanch doktoranti
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada iqtisodiyotimizning eng ilg’or sohalaridan biri bo’lgan xizmat ko’rsatish  sohasini rivojlantirishda, uning aholi turmush darajasini yaxshilashdagi rolini maksimal darajada ko’paytirishda muvaffaqiyatli strategiyalarni yaratish va sohaga ularni qo’llash usullari haqida keng qamrovli tushuncha va tamoyillar o’rganib chiqilgan.

Kalit so’zlar. Strategiya, kompaniya missiyasi,  strategic ko’rish, strategic yondashuvlar, xizmat sifati, samaradorlik
Automatic analysis of Categorical Verbal Fluency for Mild Cognitive Impartment detection: a non-linear language independent approach
Creators: name: López-De-Ipiña, Karmele
name: de Lizarduy, Unai Martinez
name: Barroso, Nora
name: Ecay-Torres, Miriam
name: Martinez-Lage, Pablo
name: Torres, Fernando
name: Faundez-Zanuy, Marcos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: Alzheimer's disease (AD) is one the main causes of dementia in the world and the patients develop severe disability and sometime full dependence. In previous stages Mild Cognitive Impairment (MCI) produces cognitive loss but not severe enough to interfere with daily life. This work, on selection of biomarkers from speech for the detection of AD, is part of a wide-ranging cross study for the diagnosis of Alzheimer. Specifically in this work a task for detection of MCI has been used. The task analyzes Categorical Verbal Fluency. The automatic classification is carried out by SVM over classical linear features, Castiglioni fractal dimension and Permutation Entropy. Finally the most relevant features are selected by ANOVA test. The promising results are over 50% for MCI
description: 4 pages, published in 2015 4th International Work Conference on Bioinspired Intelligence (IWOBI), pp. 101-104
Spin-glass--like aging in colloidal and granular glasses
Creators: name: Seoane, Beatriz
name: Zamponi, Francesco
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Motivated by the mean field prediction of a Gardner phase transition between a "normal glass" and a "marginally stable glass", we investigate the off-equilibrium dynamics of three-dimensional polydisperse hard spheres, used as a model for colloidal or granular glasses. Deep inside the glass phase, we find that a sharp crossover pressure $P_{\rm G}$ separates two distinct dynamical regimes. For pressure $P < P_{\rm G}$, the glass behaves as a normal solid, displaying fast dynamics that quickly equilibrates within the glass free energy basin. For $P>P_{\rm G}$, instead, the dynamics becomes strongly anomalous, displaying very large equilibration time scales, aging, and a constantly increasing dynamical susceptibility. The crossover at $P_{\rm G}$ is strongly reminiscent of the one observed in three-dimensional spin-glasses in an external field, suggesting that the two systems could be in the same universality class, consistently with theoretical expectations.
description: 13 pages, 12 figures (two figures added and one extra Appendix section)
ЙЎЛ ҲАРАКАТИ ХАВФСИЗЛИГИ ХИЗМАТИНИ ТАШКИЛ ЭТИШГА ТАЪСИР ЭТУВЧИ ОМИЛЛАР
Creators: name: Халилова, Малика
Publisher: name: Zenodo
Year: 2025

description: Йўл ҳаракати хавфсизлигини таъминлаш турли ташкилий чоратадбирларларлардан ташкил топган бўлиб, улари яхлит тизимга келтириш, ўзар мувофиқлаштитиш муҳим аҳамиятга эга ҳисобланади. Шу ўринда таъкидлаш лозимки сўнги йилларда муайян соҳа ёки тармоқни комплекс ва тизимли ривожлантиришда концепцияларни қабул қилиш амалиёти урф бўлмоқда. Норма ижодкорлиги фаолиятини такомиллаштириш концепцияси, Ўзбекистон Республикаси олий таълим тизимини 2030 йилгача ривожлантириш концепцияси, Ўзбекистон Республикаси халқ таълими тизимини 2030 йилгача ривожлантириш концепцияси, Ўзбекистонда ёшларга оид давлат сиёсатини 2025 йилгача ривожлантириш концепцияси, Аҳолини рўйхатга олиш бўйича концепция, Ўзбекистон Республикаси жамоат хавфсизлиги концепцияси кабилар шулар жумласидандир.
Entanglement and interaction in a topological quantum walk
Creators: name: Verga, Alberto D.
name: Elias, Ricardo Gabriel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the quantum walk of two interacting particles on a line with an interface separating two topologically distinct regions. The interaction induces a localization-delocalization transition of the edge state at the interface. We characterize the transition through the entanglement between the two particles.
description: 16 pages, 7 figures (slightly expanded version)
Spectral Approaches to Learning Predictive Representations
Creators: name: Boots, Byron
Publisher: name: Carnegie Mellon University
Year: 2012
Subjects: subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: A central problem in artificial intelligence is to choose actions to maximize reward in a partially observable, uncertain environment. To do so, we must obtain an accurate environment model, and then plan to maximize reward. However, for complex domains, specifying a model by hand can be a time consuming process. This motivates an alternative approach: learning a model directly from observations. Unfortunately, learning algorithms often recover a model that is too inaccurate to support planning or too large and complex for planning to succeed; or, they require excessive prior domain knowledge or fail to provide guarantees such as statistical consistency. To address this gap, we propose spectral subspace identification algorithms which provably learn compact, accurate, predictive models of partially observable dynamical systems directly from sequences of action-observation pairs. Our research agenda includes several variations of this general approach: spectral methods for classical models like Kalman filters and hidden Markov models, batch algorithms and online algorithms, and kernel-based algorithms for learning models in high- and infinite-dimensional feature spaces. All of these approaches share a common framework: the model’s belief space is represented as predictions of observable quantities and spectral algorithms are applied to learn the model parameters. Unlike the popular EM algorithm, spectral learning algorithms are statistically consistent, computationally efficient, and easy to implement using established matrixalgebra techniques. We evaluate our learning algorithms on a series of prediction and planning tasks involving simulated data and real robotic systems.
Lorentz invariance of effective strings
Creators: name: Cohn, J. D.
name: Periwal, Vipul
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from a Poincaré invariant field theory of a real scalar field with interactions governed by a double-well potential in 2+1 dimensions, the Lorentz representation induced on the collective coordinates describing low-energy excitations about an effective string background is derived. In this representation, Lorentz transformations are given in terms of an infinite series, in powers of derivatives along the worldsheet. Transformations that act on the direction transverse to the string worldsheet involve a universal dimension $-1$ term. As a consequence, Lorentz invariance holds in this theory of long effective strings due to cancellations in the action between irrelevant terms and the dimension two term that describes free massless scalar fields in two dimensions. (in plain tex, no macropackages necessary)
description: 9 pages
Approximate energy functionals for one-body reduced density matrix functional theory from many-body perturbation theory
Creators: name: Giesbertz, Klaas J. H.
name: Uimonen, Anna-Maija
name: van Leeuwen, Robert
Publisher: name: arXiv
Year: 2018
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a systematic approach to construct energy functionals of the one-particle reduced density matrix (1RDM) for equilibrium systems at finite temperature. The starting point of our formulation is the grand potential $Ω[\mathbf{G}]$ regarded as variational functional of the Green's function $G$ based on diagrammatic many-body perturbation theory and for which we consider either the Klein or Luttinger-Ward form. By restricting the input Green's function to be one-to-one related to a set on one-particle reduced density matrices (1RDM) this functional becomes a functional of the 1RDM. To establish the one-to-one mapping we use that, at any finite temperature and for a given 1RDM $\mathbfγ$ in a finite basis, there exists a non-interacting system with a spatially non-local potential $v[\mathbfγ]$ which reproduces the given 1RDM. The corresponding set of non-interacting Green's functions defines the variational domain of the functional $Ω$. In the zero temperature limit we obtain an energy functional $E[\mathbfγ]$ which by minimisation yields an approximate ground state 1RDM and energy. As an application of the formalism we use the Klein and Luttinger-Ward functionals in the GW-approximation compute the binding curve of a model hydrogen molecule using an extended Hubbard Hamiltonian. We compare further to the case in which we evaluate the functionals on a Hartree-Fock and a Kohn-Sham Green's function. We find that the Luttinger-Ward version of the functionals performs the best and is able to reproduce energies close to the GW energy which corresponds to the stationary point.
description: 16 pages, 13 figures
Energy-momentum complexes in f(R) theories of gravity
Creators: name: Multamaki, Tuomas
name: Putaja, Antti
name: Vagenas, Elias C.
name: Vilja, Iiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Despite the fact that modified theories of gravity, in particular the f(R) gravity models have attracted much attention in the last years, the problem of the energy localization in the framework of these models has not been addressed. In the present work the concept of energy-momentum complexes is presented in this context. We generalize the Landau-Lifshitz prescription of calculating the energy-momentum complex to the framework of f(R) gravity. As an important special case, we explicitly calculate the energy-momentum complex for the Schwarzschild-de Sitter metric for a general f(R) theory as well as for a number of specific, popular choices of f(R).
description: 11 pages, no figures, LaTeX; v2: 9 pages now, rearranged Sections, references added, no changes in physics and results, version to appear in CQG
Colored noise in Spatially-Extended Systems
Creators: name: Garcia-Ojalvo, Jordi
name: Sancho, Jose M.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the effects of time and space correlations of an external additive colored noise on the steady-state behavior of a Time-Dependent Ginzburg-Landau model. Simulations show the existence of nonequilibrium phase transitions controlled by both the correlation time and length of the noise. A Fokker-Planck equation and the steady probability density of the process are obtained by means of a theoretical approximation.
description: 19 pages (REVTEX 3.0), 9 figures appended or available upon request to ojalvo@noise.ecm.ub.es
Digital Summer School 2020. 'Research Data Management'. University of Hildesheim Foundation.
Creators: name: Strauch, Annette
Publisher: name: Zenodo
Year: 2020
Subjects: Research Data
Research Data Management
University of Hildesheim Foundation
RDM
FAIR
digital summer school
digital summer school 2020
RDM Digital Summer School
FDM
eScience
Bibliotheken
Universitätsbibliotheken

description: Hildesheim University Library maintains cooperations with the relevant actors in research data management in Germany (e.g. forschungsdaten.info, forschungsdaten.org) and worldwide with partner institutions (e.g. Research Data Alliance, CODATA). There are cooperations with the NFDI consortia. The work involved in the management of research data at the university’s library is very varied and diverse. It moves strongly on the level of practical support. Questions w.r.t. classification systems for research work, specific research tools and repositories appear. Frequently, researchers ask questions about funding applications, data management plans, and also the entire legal issues are being asked. We have RDMO in operation as a data management plan tool for the University of Hildesheim Foundation.

 For further information about RDMO see: https://rdmorganiser.github.io/en/ At Hildesheim University Foundation, we have two systems in which we can store research data: 1. HilData based on easydb and 2. also Dataverse.
 Researchers can permanently secure their research data with Dataverse at the University of Hildesheim Foundation, make it publicly available (publish) in a sustainable and high-quality manner. The research data are given a persistent identifier when the data is published. So far, 12 coffee lectures on research data management have taken place and four more will follow from October 2020. RDM advanced courses will be taking place again in the autumn of 2020.