cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Meridional Energy Transport from Midlatitudes towards the Arctic
Creators: name: Liu, Yang
name: Attema, Jisk
name: Hazeleger, Wilco
Publisher: name: Zenodo
Year: 2018
Subjects: Meridional Energy Transport
Sea Ice Variation
Interaction between Ocean and Atmosphere

description: Meridional Energy Transport, both in the ocean (OMET) and atmosphere (AMET), is one of the key aspects for the climate system. This study focuses on the AMET & OMET from mid-latitudes to the Arctic. The quantification of AMET & OMET is based on the reanalysis products, which include ERA-Interim, MERRA2, JRA55 for the atmosphere and ORAS4, GLORYS2V3, SODA3 for the ocean. The mean heat transports in all datasets agree well, whereas the spatial distribution and temporal variation of AMET & OMET, deviate substantially. This results in a large difference in the low frequency variability of AMET & OMET at certain latitudes. Only after 2010 multiannual variations in the reanalysis products agree well. The results show that the decline of sea ice has a close relation with the change of AMET & OMET. This relation also indicates the interaction between ocean and atmosphere at certain latitudes.
description: Presentation given at EGU 2018 in Vienna on April 9th 2018 during the session 'Arctic Climate Change: governing mechanisms and global implications'.
Shotgun assembly of labeled graphs
Creators: name: Mossel, Elchanan
name: Ross, Nathan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We consider the problem of reconstructing graphs or labeled graphs from neighborhoods of a given radius r. Special instances of this problem include the well known: DNA shotgun assembly; the lesser-known: neural network reconstruction; and a new problem: assembling random jigsaw puzzles. We provide some necessary and some sufficient conditions for correct recovery both in combinatorial terms and for some generative models including random labelings of lattices, Erdos-Renyi random graphs, and the random jigsaw puzzle model. Many open problems and conjectures are provided.
description: Ver3: 23 pages, matches published version but with a corrected proof of Theorem 4.5 (result unchanged); Ver2: 22 pages; Ver1: 21 pages
Additional file 1 of The construction of Chinese indicator system on public health field investigation and short-term study hub: experience and implications
Creators: name: Feng, Ning
name: Dong, Yanhui
name: Liu, Shelan
name: Dong, Xiaoping
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. Questionnaire on the construction of Chinese indicator system of public health field investigation and short-term study Hub.
Building a healthier feed: Private location trace intersection driven feed recommendations
Creators: name: South, Tobin
name: Lothian, Nick
name: Pentland, Alex "Sandy"
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The physical environment you navigate strongly determines which communities and people matter most to individuals. These effects drive both personal access to opportunities and the social capital of communities, and can often be observed in the personal mobility traces of individuals. Traditional social media feeds underutilize these mobility-based features, or do so in a privacy exploitative manner. Here we propose a consent-first private information sharing paradigm for driving social feeds from users' personal private data, specifically using mobility traces. This approach designs the feed to explicitly optimize for integrating the user into the local community and for social capital building through leveraging mobility trace overlaps as a proxy for existing or potential real-world social connections, creating proportionality between whom a user sees in their feed, and whom the user is likely to see in person. These claims are validated against existing social-mobility data, and a reference implementation of the proposed algorithm is built for demonstration. In total, this work presents a novel technique for designing feeds that represent real offline social connections through private set intersections requiring no third party, or public data exposure.
A simple proof of Kotake-Narasimhan theorem in some classes of ultradifferentiable functions
Creators: name: Boiti, Chiara
name: Jornet, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary: 46E10, Secondary: 46F05

description: We give a simple proof of a general theorem of Kotake-Narasimhan for elliptic operators in the setting of ultradifferentiable functions in the sense of Braun, Meise and Taylor. We follow the ideas of Komatsu. Based on an example of Métivier, we also show that the ellipticity is a necessary condition for the theorem to be true. The present new version of the paper modifies the proof of Theorem 1.4 for an observation by Hoepfner and Rampazo who pointed out that an induction hypothesis depends on a constant $C_q$ that changes in the induction process, and hence the argument might not work as it was written. However, the statement of the result was originally correct and modifying $C_q$ with a more concrete expression in the induction hypothesis, the induction procedure is easily clarified with almost the same proof. Moreover, we eliminate the condition that the weight is identically zero in the interval [0,1], showing that the statements hold true with very similar arguments.
description: arXiv admin note: text overlap with arXiv:1412.4954
Unfinished irresolution
Creators: name: Davies, Fiona Hilary.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Density Planner: Minimizing Collision Risk in Motion Planning with Dynamic Obstacles using Density-based Reachability
Creators: name: Lützow, Laura
name: Meng, Yue
name: Armijos, Andres Chavez
name: Fan, Chuchu
Publisher: name: arXiv
Year: 2022
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: Uncertainty is prevalent in robotics. Due to measurement noise and complex dynamics, we cannot estimate the exact system and environment state. Since conservative motion planners are not guaranteed to find a safe control strategy in a crowded, uncertain environment, we propose a density-based method. Our approach uses a neural network and the Liouville equation to learn the density evolution for a system with an uncertain initial state. We can plan for feasible and probably safe trajectories by applying a gradient-based optimization procedure to minimize the collision risk. We conduct motion planning experiments on simulated environments and environments generated from real-world data and outperform baseline methods such as model predictive control and nonlinear programming. While our method requires offline planning, the online run time is 100 times smaller compared to model predictive control.
description: \copyright 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
Fine-tuning problems in quantum field theory and Lorentz invariance: A scalar-fermion model with a physical momentum cutoff
Creators: name: Cortes, J. L.
name: Lopez-Sarrion, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the consistency of having Lorentz invariance as a low energy approximation within the quantum field theory framework. A model with a scalar and a fermion field is used to show how a Lorentz invariance violating high momentum scale, a physical cutoff rendering the quantum field theory finite, can be made compatible with a suppression of Lorentz invariance violations at low momenta. The fine tuning required to get this suppression and to have a light scalar particle in the spectrum is determined at one loop.
description: Revised version; minor changes. The main content of the paper is not altered
Excitonic Insulator to Superconductor Phase Transition in Ultra-Compressed Helium
Creators: name: Liu, Cong
name: Errea, Ion
name: Pickard, Chris
name: Conway, Lewis J.
name: Monserrat, Bartomeu
name: Fang, Yue-Wen
name: Ding, Chi
name: Lu, Qing
name: Sun, Jian
name: Boronat, Jordi
name: Cazorla, Claudio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Helium, the second most abundant element in the universe, exhibits an extremely large electronic band gap of about $20$ eV at low pressures ($\le 0.1$ GPa). While the metallization pressure of hcp helium has been accurately predicted, thus far little attention has been paid to the specific mechanisms driving the band-gap closure and electronic properties of this quantum crystal in the terapascal regime (1 TPa $= 1,000$ GPa). Here, we employ state-of-the-art density functional theory and many-body perturbation theory calculations to fill up this knowledge gap. It is found that prior to reaching metallicity bulk solid helium becomes an excitonic insulator (EI), an exotic state of matter typically observed in low-dimensional systems in which electrostatically bound electron-hole pairs form spontaneously. Furthermore, it is shown that electron-phonon coupling (EPC) is significantly enhanced across the EI to metal phase transition as signaled by prominent phonon softening and giant EPC strength values ($λ\sim 10-100$) estimated at specific reciprocal space points. Accordingly, we predict metallic helium to be a superconductor with a critical temperature of $\approx 30$ K at $20$ TPa and of $\approx 100$ K at $100$ TPa. These unforeseen phenomena have important consequences on the elastic, thermodynamic and transport properties of metallic helium hence may be critical for improving our fundamental understanding and modelling of celestial bodies.
description: 25 pages, 18 figures
Hochschuldidaktische Professionalisierung für das Beraten und Leiten von Gruppen
Creators: name: Szczyrba, Birgit
name: Wildt, Beatrix
name: Wildt, Johannes
Publisher: name: Hochschuldidaktisches Zentrum der Technischen Universität Dortmund
Year: 2011
Subjects: subject: 370

description: Journal Hochschuldidaktik ; 22. Jahrgang 2011 Heft 2
Polar harmonic Maass forms and their applications
Creators: name: Bringmann, Kathrin
name: Kane, Ben
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F03, 11F11, 11F12, 11F25, 11F30, 11F37

description: In this survey, we present recent results of the authors about non-meromorphic modular objects known as polar harmonic Maass forms. These include the computation of Fourier coefficients of meromorphic modular forms and relations between inner products of meromorphic modular forms and higher Green's functions evaluated at CM-points.
Factors That Determine Employee Engagement (The Case of Commercial Bank of Ethiopia)
Creators: name: Eleni, Esayas
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The purpose of this research was to examine the factors affecting employee engagement in CBE Addis Ababa area. The study employed combination of Descriptive & causal research designs. Data was collected from employees of CBE found in branches under the four districts of Addis Ababa. For this research 384 questionnaires were distributed and 291(75.78%) were obtained & used for further analysis. The collected data was analyzed by using statistical packaging for social science (SPSS) software version 20.0. In addition, to analyze the collected data tables and other descriptive statistics (frequencies, means & standard deviations) and inferential statistics (correlation & regression analysis) were used. The Results obtained indicate that from the six demographic factors examined in the study (gender, age , educational qualification, job title ,monthly income & service of years) the level of engagement varies with gender in which female were found to have a higher level of engagement than male in CBE. in addition, Job characteristics is the highest among the rest of the variables revealing the largest contribution in explaining the variance of the dependent variable followed by work life balance, Organizational justice and have positive and significant effect on employee engagement in CBE. While rewards and recognition and motivation takes the lowest and have negative and not significant effect on employee engagement in CBE respectively.
Resolvent estimates on asymptotically cylindrical manifolds and on the half line
Creators: name: Christiansen, T. J.
name: Datchev, K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Manifolds with infinite cylindrical ends have continuous spectrum of increasing multiplicity as energy grows, and in general embedded resonances (resonances on the real line, embedded in the continuous spectrum) and embedded eigenvalues can accumulate at infinity. However, we prove that if geodesic trapping is sufficiently mild, then the number of embedded resonances and eigenvalues is finite, and moreover the cutoff resolvent is uniformly bounded at high energies. We obtain as a corollary the existence of resonance free regions near the continuous spectrum. We also obtain improved estimates when the resolvent is cut off away from part of the trapping, and along the way we prove some resolvent estimates for repulsive potentials on the half line which may be of independent interest.
description: This paper is a companion to the paper `Wave asymptotics for manifolds with infinite cylindrical ends' by the same authors, but each paper can be read independently of the other
Excitation of Surface Waves with On-Demand Polarization at Self-Complementary Metasurface
Creators: name: Polevoy, Sergey
name: Yermakov, Oleh
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Surface electromagnetic waves are the main carriers of the highly localized in-plane signal in planar antennas and photonic devices. However, the polarization degree of freedom is generally absent for surface waves as far as it is still a challenge to excite the surface waves with a necessary polarization state. In this letter, for the first time, we propose a method to excite the surface waves of arbitrary polarization using the self-complementary metasurfaces obeying Babinet's duality principle. Namely, we demonstrate the excitation of surface waves with (i) linear horizontal and vertical, (ii) linear diagonal, (iii) right- and left-handed circular, and (iv) elliptical polarizations covering, in principle, a whole Poincare sphere of polarization states. Finally, we analyze the impact of substrate on the efficiency of polarization-demanded surface waves excitation. The results obtained may find the numerous applications in planar photonic and flat optical polarization devices.
Career service papers - csp 20/23
Creators: name: Schwarz, Silke
name: Becker, Anna
name: Sandberg, Berit
name: Kanning, Uwe P.
name: Menke, Marcellus
Publisher: name: Universitätsbibliothek Siegen
Year: 2023
Subjects: subject: 000 Allgemeines, Informatik, Informationswissenschaft
subject: Freiberufliche Musiker
subject: Marktanforderungen
subject: kunstbasiertes Lernen
subject: Methoden der Personalauswahl
subject: maschinelle Wissensverarbeitung
subject: Künstliche Intelligenz
subject: Hochschule
subject: Berufsvorbereitung
subject: Career Service
subject: Studium
subject: Berufsberatung
subject: Career Service
subject: Berufsorientierung

description: Themen dieser Ausgabe sind: Freiberufliche Musiker im Spannungsfeld zwischen künstlerischem Ideal und Marktanforderungen, die Wirkung von kunstbasiertem Lernen und der Einsatz von Künstlicher Intelligenz in der Personalauswahl. Artikelübersicht: Dr. Silke Schwarz, Anna Becker: Das professionelle Mindset. Freiberufliche Musiker im Spannungsfeld zwischen künstlerischem Ideal und Marktanforderungen. Prof. Dr. Berit Sandberg: Mit Kunst zu Future Skills: Wie kunstbasiertes Lehren und Lernen wirkt. Prof. Dr. Uwe P. Kanning, Marcellus Menke: Bewerberinnen und Bewerbern ein gesundes Selbstbewusstsein mitgeben. Was der Einsatz von Methoden der maschinellen Wissensverarbeitung und Künstlicher Intelligenz für die Personalauswahl bedeutet.
The CMS trigger system
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper describes the CMS trigger system and its performance during Run 1 of the LHC. The trigger system consists of two levels designed to select events of potential physics interest from a GHz (MHz) interaction rate of proton-proton (heavy ion) collisions. The first level of the trigger is implemented in hardware, and selects events containing detector signals consistent with an electron, photon, muon, tau lepton, jet, or missing transverse energy. A programmable menu of up to 128 object-based algorithms is used to select events for subsequent processing. The trigger thresholds are adjusted to the LHC instantaneous luminosity during data taking in order to restrict the output rate to 100 kHz, the upper limit imposed by the CMS readout electronics. The second level, implemented in software, further refines the purity of the output stream, selecting an average rate of 400 Hz for offline event storage. The objectives, strategy and performance of the trigger system during the LHC Run 1 are described.
description: Replaced with the published version. Added the journal reference and DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TRG-12-001/index.html
On the definition of neutrosophic logic
Creators: name: Imamura, Takuma
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 03B60, 03B52, 26E35

description: Smarandache (2003) introduced a new set-valued fuzzy logic called (nonstandard) neutrosophic logic by using Robinson's nonstandard analysis. However, its definition involved many errors including the illegal use of nonstandard analysis. In this paper, we provide a rigorous definition of neutrosophic logic. All the errors in the original definition are addressed. We then point out some paradoxes of neutrosophic logic. Finally we formulate neutrosophic logic with no use of nonstandard analysis.
Perception of camouflage : a studio investigation
Creators: name: Keane, Sam.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: Lehrende als Coaches
title: Lernbegleitung von Studierenden am Beispiel des Tutoring im problem-based learning (PBL)
titleType: AlternativeTitle
Creators: name: Eder, Franziska
name: Scholkmann, Antonia
Publisher: name: Hochschuldidaktisches Zentrum der Technischen Universität Dortmund
Year: 2011
Subjects: subject: 370

description: Journal Hochschuldidaktik ; 22. Jahrgang 2011 Heft 2
Temperature Fluctuations in Quasar Accretion Discs from Spectroscopic Monitoring Data
Creators: name: Stone, Zachary
name: Shen, Yue
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Neustadt & Kochanek (2022, hereafter NK22) proposed a new method to reconstruct the temperature perturbation map (as functions of time and disc radius) of AGN accretion discs using multi-wavelength photometric light curves. We apply their technique to 100 quasars at $z=0.5-2$ from the Sloan Digital Sky Survey Reverberation Mapping project, using multi-epoch spectroscopy that covers rest-frame UV-optical continuum emission from the quasar and probes days to months timescales. Consistent with NK22 for low-redshift AGNs, we find that the dominant pattern of disc temperature perturbations is either slow inward/outward moving waves with typical amplitudes $δT/T_0\sim 10\%$ traveling at $\sim 0.01-0.1c$, with a typical radial frequency of $\sim$ 0.5 dex in $\log R$, or incoherent perturbations. In nearly none of the cases do we find clear evidence for coherent, fast outgoing temperature perturbations at the speed of light, reminiscent of the lamppost model; but such lamppost signals may be present in some quasars for limited periods of the monitoring data. Using simulated data, we demonstrate that high-fidelity temperature perturbation maps can be recovered with high-quality monitoring spectroscopy, with limited impact from seasonal gaps in the data. On the other hand, reasonable temperature perturbation maps can be reconstructed with high-cadence photometric light curves from the Vera C. Rubin Observatory Legacy Survey of Space and Time. Our findings, together with NK22, suggest that internal disc processes are the main driver for temperature fluctuations in AGN accretion discs over days to months timescales.
description: 20 pages, 15 figures. Supplementary data is located at https://zenodo.org/record/7195997 and figures, animations, and python code are located at https://github.com/Zstone19/TempMap
Biodiversity Digital Twin for Advanced Modelling, Simulation and Prediction Capabilities
Creators: name: Islam, Sharif
Publisher: name: Zenodo
Year: 2023
Subjects: digital twin
biodiversity
data modelling
FAIR data
simulation
models

description: NLBIF - Netherlands Biodiversity Information Facility - is the national knowledge hub of GBIF - Global Biodiversity Information Facility. GBIF is an international network and database for biodiversity data. GBIF and NLBIF share the common goal of providing open access to data about all forms of life on Earth to everyone, anywhere. Bringing together open and freely accessible biodiversity data, and developing the necessary publication and analysis tools for it, are necessary for: Modern scientific research; The protection of biodiversity; The equitable distribution of the ecosystem services it provides; Technological and sustainable development; and Improving people's quality of life. Sharif Islam, leader for improving Quality of Data, Workflows and Models through FAIR Principles in BioDT, joined the NLBIF meeting on 7 March 2023 and presented an overview of the technical advancements done in the scope of the project.
Additional file 1 of Cytoplasmic delivery of siRNA using human-derived membrane penetration-enhancing peptide
Creators: name: Nakamura, Momoko
name: Fujiwara, Kei
name: Doi, Nobuhide
Publisher: name: figshare
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: 60506 Virology

description: Additional file 1: Fig. S1. Expression and purification of RBD fusion proteins. Fig. S2. siRNA stability assays. Fig. S3. Confocal images of HeLa cells treated with the complex of RBDmut fusion protein and Cy3-labelled siRNA. Fig. S4. Expression and purification of Ago2 fusion proteins. Table S1. Primer sequences used in this study. Table S2. siRNA sequences and modifications used in this study.
Procreative bodies envisioned : a visual exploration of female reproductive experiences
Creators: name: Xeros-Constantinides, Sophia Strugnell.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Dungeons and Dragons as a Dialog Challenge for Artificial Intelligence
Creators: name: Callison-Burch, Chris
name: Tomar, Gaurav Singh
name: Martin, Lara J.
name: Ippolito, Daphne
name: Bailis, Suma
name: Reitter, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: AI researchers have posited Dungeons and Dragons (D&D) as a challenge problem to test systems on various language-related capabilities. In this paper, we frame D&D specifically as a dialogue system challenge, where the tasks are to both generate the next conversational turn in the game and predict the state of the game given the dialogue history. We create a gameplay dataset consisting of nearly 900 games, with a total of 7,000 players, 800,000 dialogue turns, 500,000 dice rolls, and 58 million words. We automatically annotate the data with partial state information about the game play. We train a large language model (LM) to generate the next game turn, conditioning it on different information. The LM can respond as a particular character or as the player who runs the game--i.e., the Dungeon Master (DM). It is trained to produce dialogue that is either in-character (roleplaying in the fictional world) or out-of-character (discussing rules or strategy). We perform a human evaluation to determine what factors make the generated output plausible and interesting. We further perform an automatic evaluation to determine how well the model can predict the game state given the history and examine how well tracking the game state improves its ability to produce plausible conversational output.
description: Accepted at EMNLP 2022
Threshold corrections in heterotic flux compactifications
Creators: name: Angelantonj, Carlo
name: Israel, Dan
name: Sarkis, Matthieu
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the one-loop threshold corrections to the gauge and gravitational couplings for a large class of N=2 non-Kähler heterotic compactifications with three-form flux, consisting in principal two-torus bundles over K3 surfaces. We obtain the results as sums of BPS-states contributions, depending on the topological data of the bundle. We analyse also the worldsheet non-perturbative corrections coming from instantons wrapping the torus fiber, that are mapped under S-duality to D-instanton corrections in type I flux compactifications.
description: 36 pages
Fitting simulation input models for correlated traffic data
Creators: name: Kriege, Jan
Publisher: name: Technische Universität Dortmund
Year: 2012
Subjects: subject: ARTA processes
subject: Input Modeling
subject: Phase type distributions
subject: Stochastic processes
subject: 004

description: The adequate representation of input models is an important step in building valid simulation models. Modeling independent and identically distributed data is well established in simulation, but for some application areas like computer and communication networks it is known, that the assumption of independent and identically distributed data is violated in practice and that for example interarrival times or packet sizes exhibit autocorrelation over a large number of lags. Moreover, it is known that negligence of these correlations can result in a serious loss of validity of the simulation model. Although different stochastic processes, which can model these autocorrelations, like e.g. Autoregressive-To-Anything (ARTA) processes and Markovian Arrival Processes (MAPs), have been proposed in the past and more recently fitting algorithms to set the parameters of these processes such that they resemble the behavior of observations from a real system have been developed, the integration of correlated processes into simulation models is still a challenge. In this work ARTA processes are extended in several ways to account for the requirements when simulating models of computer and communication systems. In a first step ARTA processes are extended to use an Autoregressive Moving Average (ARMA) process instead of a pure Autoregressive (AR) base process to be able to capture a large number of autocorrelation lags, while keeping the model size small. In a second step they are enabled to use the flexible class of acyclic Phase-type distributions as marginal distribution. To support the usage of these novel processes in simulation models a fitting algorithm is presented, software for fitting and simulating these processes is developed and the tools are integrated into the toolkit ProFiDo, which provides a complete framework for fitting and analyzing different stochastic processes. By means of synthetically generated and real network traces it is shown that the presented stochastic processes are able to provide a good approximation of the marginal distribution as well as the correlation structure of the different traces and result in a compact process description.
Approximating fractionally isomorphic graphons
Creators: name: Hladký, Jan
name: Hng, Eng Keat
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Grebík and Rocha [Fractional Isomorphism of Graphons, Combinatorica 42, pp 365-404 (2022)] extended the well studied notion of fractional isomorphism of graphs to graphons. We prove that fractionally isomorphic graphons can be approximated in the cut distance by fractionally isomorphic finite graphs. This answers the main question from ibid. As an easy but convenient corollary, we deduce that every regular graphon can be approximated by regular graphs.
description: 23 pages, 2 figures; as will appear in European Journal of Combinatorics
Phenomenological MSSM interpretation of CMS searches in pp collisions at sqrt(s) = 7 and 8 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Searches for new physics by the CMS collaboration are interpreted in the framework of the phenomenological minimal supersymmetric standard model (pMSSM). The data samples used in this study were collected at sqrt(s) = 7 and 8 TeV and have integrated luminosities of 5.0 and 19.5 inverse-femtobarns, respectively. A global Bayesian analysis is performed, incorporating results from a broad range of CMS supersymmetry searches, as well as constraints from other experiments. Because the pMSSM incorporates several well-motivated assumptions that reduce the 120 parameters of the MSSM to just 19 parameters defined at the electroweak scale, it is possible to assess the results of the study in a relatively straightforward way. Approximately half of the model points in a potentially accessible subspace of the pMSSM are excluded, including all pMSSM model points with a gluino mass below 500 GeV, as well as models with a squark mass less than 300 GeV. Models with chargino and neutralino masses below 200 GeV are disfavored, but no mass range of model points can be ruled out based on the analyses considered. The nonexcluded regions in the pMSSM parameter space are characterized in terms of physical processes and key observables, and implications for future searches are discussed.
description: Replaced with published version. Added the journal reference and DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-15-010/
Thick branes via higher order field theory models with exponential and power-law tails
Creators: name: Peyravi, Marzieh
name: Nazifkar, Samira
name: Lobo, Francisco S. N.
name: Javidan, Kurosh
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we obtain exact thick brane models in $4+1$ dimensions generated by higher order field theory kinks, inspired by specific potentials for $ϕ^{10}$ and $ϕ^{18}$ models. We verify that the geodesic equation along the fifth dimension confirms the confining effects of the scalar field on the brane for all of these models. These models provide new solutions with exponential and power-law tails which live in different topological sectors. We show that the resulting branes of specific exponential law models do not possess $Z_2$-symmetry. Furthermore, we examine the stability of the thick branes, by determining the sign of the $w^2$ term in the expansion of the potential for the resulting Schrödinger-like equation. It turns out that two of the three models of the $ϕ^{10}$ brane are stable, while another contains unstable modes for certain ranges of the model parameters. We also show that the brane solution from the specific $ϕ^{18}$ models are stable, while the others involve neutral equilibrium. The asymptotic behaviour of the brane solutions are also discussed.
description: 23 pages, 10 figures. V2: 25 pages; 12 figures; matches published version. arXiv admin note: text overlap with arXiv:1504.04603
Service Quality and Process on Customer Satisfaction: Empirical Evidence from Addis Ketema Revenue Office
Creators: name: Robel, Getachew
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The study assessed service quality and it's Process on customer satisfaction of Addis Ketema Revenue Office. This study endeavors to discover the impact of service quality on customer satisfaction in Addis Ketema Revenue Office using Five dimensions in service quality (SERVQUAL) such as tangibility, reliability, responsiveness, empathy, and assurance are considered as the base for this study. To achieve the overall objective of the study, collect data from customers of the branches, using questioners and interview. Accordingly, 242 respondents were participated in the study using a convenience sampling technique. Both descriptive and inferential statistics methods were applied in the analysis part. The data were analyzed by using SPSS version 20.1. The result of the study reveals that the overall level of customer's satisfaction in the study area is low as compared those who were not satisfied. The result of study showed that except assurance the rest service quality indicators (servqual) positively and significantly affect customer's satisfaction in the organization. Thus, it can be concluded that responsiveness, reliability and tangibility remains the most determinant and/it strongly influence customer's satisfaction level of the study area. Furthermore, multiple regressions identify the relative contribution of each variable and determine the best predictor variables among a set of variables. Accordingly, responsiveness has the highest contribution to customer loyalty among the independents variables. Based on the findings the study recommend the following management bodies of the branch further investigate the main reason of unsatisfied customers and tried to create Continuous improvements on the major factors affecting customers level of satisfaction.
Non-LTE line formation of Fe in late-type stars - III. 3D non-LTE analysis of metal-poor stars
Creators: name: Amarsi, A. M.
name: Lind, K.
name: Asplund, M.
name: Barklem, P. S.
name: Collet, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: As one of the most important elements in astronomy, iron abundance determinations need to be as accurate as possible. We investigate the accuracy of spectroscopic iron abundance analyses using archetypal metal-poor stars. We perform detailed 3D non-LTE radiative transfer calculations based on 3D hydrodynamic Stagger model atmospheres, and employ a new model atom that includes new quantum-mechanical neutral hydrogen collisional rate coefficients. With the exception of the red giant HD122563, we find that the 3D non-LTE models achieve Fe i/Fe ii excitation and ionization balance as well as not having any trends with equivalent width to within modelling uncertainties of 0.05 dex, all without having to invoke any microturbulent broadening; for HD122563 we predict that the current best parallax-based surface gravity is over-estimated by 0.5 dex. Using a 3D non-LTE analysis, we infer iron abundances from the 3D model atmospheres that are roughly 0.1 dex higher than corresponding abundances from 1D MARCS model atmospheres; these differences go in the same direction as the non-LTE effects themselves. We make available grids of departure coefficients, equivalent widths and abundance corrections, calculated on 1D MARCS model atmospheres and horizontally- and temporally-averaged 3D Stagger model atmospheres.
description: 18 pages, 5 figures; Accepted for publication in MNRAS
Optimal designs for rational regression models
Creators: name: Dette, Holger
name: Kiss, Christine
Publisher: name: Technische Universität Dortmund
Year: 2012
Subjects: subject: Chebyshev systems
subject: optimal designs
subject: palindromic polynomials
subject: rational regression models
subject: 310
subject: 330
subject: 620

description: In this paper we consider locally optimal designs problems for rational regression models. In the case where the degrees of polynomials in the numerator and denominator differ by at most 1 we identify an invariance property of the optimal designs if the denominator polynomial is palindromic, which reduces the optimization problem by 50%. The results clarify and extend the particular structure of locally c-, D- and E optimal designs for inverse quadratic regression models which have recently been found by Haines (1992) and Dette and Kiss (2009). We also investigate the relation between the D-optimal designs for the Michaelis Menten and EMAX-model from a more general point of view.
description: Discussion Paper / SFB 823;5/2012
Duality : a studio investigation into the dichotomy between harmony and contradiction
Creators: name: Hall, Joshua.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Nef cones of projective bundles over surfaces and Seshadri constants
Creators: name: Misra, Snehajit
name: Ray, Nabanita
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this article, we give a description of the closed cone of curves of the projective bundle $\mathbb{P}(E)$ over a smooth projective variety $X$. Using duality, we then calculate the nef cone of divisors in $\mathbb{P}(E)$ over some special surfaces $X$ and for some special bundles on $X$. As an application, we also calculate the Seshadri constants of semistable ample vector bundles with vanishing discriminant on some special ruled surfaces at special points.
description: Final Version. To appear in Osaka Journal of Mathematics
Dark Sector Showers in the Lund Jet Plane
Creators: name: Cohen, Timothy
name: Roloff, Jennifer
name: Scherb, Christiane
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the consequences of models where dark sector quarks could be produced at the LHC, which subsequently undergo a dark parton shower, generating jets of dark hadrons that ultimately decay back to Standard Model hadrons. This yields collider objects that can be nearly indistinguishable from Standard Model jets, motivating the reliance on substructure observables to tease out the signal. However, substructure predictions are sensitive to the details of the incalculable dark hadronization. We show that the Lund jet plane provides a very effective tool for designing observables that are resilient against the unknown impact of dark hadronization on the substructure properties of dark sector jets.
description: 11 pages, 6 figures
The fate of discrete torsion on resolved heterotic Z2xZ2 orbifolds using (0,2) GLSMs
Creators: name: Faraggi, A. E.
name: Nibbelink, S. Groot
name: Hurtado-Heredia, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper aims to shed light on what becomes of discrete torsion within heterotic orbifolds when they are resolved to smooth geometries. Gauged Linear Sigma Models (GLSMs) possessing (0,2) worldsheet supersymmetry are employed as interpolations between them. This question is addressed for resolutions of the non-compact C3/Z2xZ2 and the compact T6/Z2xZ2 orbifolds to keep track of local and global aspects. The GLSMs associated with the non-compact orbifold with or without torsion are to a large extent equivalent: only when expressed in the same superfield basis, a field redefinition anomaly arises among them, which in the orbifold limit reproduces the discrete torsion phases. Previously unknown, novel resolution GLSMs for T6/Z2xZ2 are constructed. The GLSM associated with the torsional compact orbifold suffers from mixed gauge anomalies, which need to be cancelled by appropriate logarithmic superfield dependent FI-terms on the worldsheet, signalling H-flux due to NS5-branes supported at the exceptional cycles.
description: 2+48 pages latex, references and some comments added
The impressed self and the imprinted landscape
Creators: name: Faulkner, Jeffrey Gordon.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Localization on $AdS_3 \times S^2$ I: the 4d/5d connection in off-shell Euclidean supergravity
Creators: name: Ciceri, Axel
name: Jeon, Imtak
name: Murthy, Sameer
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We begin to develop the formalism of localization for the functional integral of supergravity on $AdS_3 \times S^2$. We show how the condition of supersymmetry in the Euclidean $\mathbb{H}^3/\mathbb{Z} \times S^2$ geometry naturally leads to a twist of the S$^2$ around the time direction of $AdS_3$. The twist gives us a five-dimensional Euclidean supergravity background dual to the elliptic genus of $(0,4)$ SCFT$_2$ at the semiclassical level. On this background we set up the off-shell BPS equations for one of the Killing spinors, such that the functional integral of five-dimensional Euclidean supergravity on $\mathbb{H}^3/\mathbb{Z} \times S^2$ localizes to its space of solutions. We obtain a class of solutions to these equations by lifting known off-shell BPS solutions of 4-dimensional supergravity on $AdS_2 \times S^2$. In order to do this consistently, we construct and use a Euclidean version of the off-shell 4d/5d lift of arxiv:1112.5371, which could be of independent interest.
description: 36 pages + appendices
Field driven magnetostructural transitions in GeCo$_2$O$_4$
Creators: name: Fabrèges, X.
name: Ressouche, E.
name: Duc, F.
name: de Brion, S.
name: Amara, M.
name: Detlefs, C.
name: Paolasini, L.
name: Suard, E.
name: Regnault, L. -P.
name: Canals, B.
name: Strobel, P.
name: Simonet, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the spinel compound GeCo$_2$O$_4$, the Co$^{2+}$ pyrochlore sublattice presents remarkable magnetic field-induced behaviors that we unveil through neutron and X-ray single-crystal diffraction. The Néel ordered magnetic phase is entered through a structural lowering of the cubic symmetry. In this phase, when a magnetic field is applied along a 2-fold cubic direction, a spin-flop transition of one fourth of the magnetic moments releases the magnetic frustration and triggers magnetostructural effects. At high field, these ultimately lead to an unusual spin reorientation associated to structural changes.
Tailoring three-dimensional topological codes for biased noise
Creators: name: Huang, Eric
name: Pesah, Arthur
name: Chubb, Christopher T.
name: Vasmer, Michael
name: Dua, Arpit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Tailored topological stabilizer codes in two dimensions have been shown to exhibit high storage threshold error rates and improved subthreshold performance under biased Pauli noise. Three-dimensional (3D) topological codes can allow for several advantages including a transversal implementation of non-Clifford logical gates, single-shot decoding strategies, parallelized decoding in the case of fracton codes as well as construction of fractal lattice codes. Motivated by this, we tailor 3D topological codes for enhanced storage performance under biased Pauli noise. We present Clifford deformations of various 3D topological codes, such that they exhibit a threshold error rate of $50\%$ under infinitely biased Pauli noise. Our examples include the 3D surface code on the cubic lattice, the 3D surface code on a checkerboard lattice that lends itself to a subsystem code with a single-shot decoder, the 3D color code, as well as fracton models such as the X-cube model, the Sierpinski model and the Haah code. We use the belief propagation with ordered statistics decoder (BP-OSD) to study threshold error rates at finite bias. We also present a rotated layout for the 3D surface code, which uses roughly half the number of physical qubits for the same code distance under appropriate boundary conditions. Imposing coprime periodic dimensions on this rotated layout leads to logical operators of weight $O(n)$ at infinite bias and a corresponding $\exp[-O(n)]$ subthreshold scaling of the logical failure rate, where $n$ is the number of physical qubits in the code. Even though this scaling is unstable due to the existence of logical representations with $O(1)$ low-rate Pauli errors, the number of such representations scales only polynomially for the Clifford-deformed code, leading to an enhanced effective distance.
description: 51 pages, 34 figures