cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lorenz gauge gravitational self-force calculations of eccentric binaries using a frequency domain procedure
Creators: name: Osburn, Thomas
name: Forseth, Erik
name: Evans, Charles
name: Hopper, Seth
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an algorithm for calculating the metric perturbations and gravitational self-force for extreme-mass-ratio inspirals (EMRIs) with eccentric orbits. The massive black hole is taken to be Schwarzschild and metric perturbations are computed in Lorenz gauge. The perturbation equations are solved as coupled systems of ordinary differential equations in the frequency domain. Accurate local behavior of the metric is attained through use of the method of extended homogeneous solutions and mode-sum regularization is used to find the self-force. We focus on calculating the self-force with sufficient accuracy to ensure its error contributions to the phase in a long term orbital evolution will be $δΦ\lesssim 10^{-2}$ radians. This requires the orbit-averaged force to have fractional errors $\lesssim 10^{-8}$ and the oscillatory part of the self-force to have errors $\lesssim 10^{-3}$ (a level frequently easily exceeded). Our code meets this error requirement in the oscillatory part, extending the reach to EMRIs with eccentricities of $e \lesssim 0.8$, if augmented by use of fluxes for the orbit-averaged force, or to eccentricities of $e \lesssim 0.5$ when used as a stand-alone code. Further, we demonstrate accurate calculations up to orbital separations of $a \simeq 100 M$, beyond that required for EMRI models and useful for comparison with post-Newtonian theory. Our principal developments include (1) use of fully constrained field equations, (2) discovery of analytic solutions for even-parity static modes, (3) finding a pre-conditioning technique for outer homogeneous solutions, (4) adaptive use of quad-precision and (5) jump conditions to handle near-static modes, and (6) a hybrid scheme for high eccentricities.
description: Updated to more closely reflect published version
On the Potential Economic Development of HAASI™ Technology Instrumentation for Near Real Time Cloud-Analysis-Based Solar Irradiance Forecasting. A Presentation to the ASPIRE Entrepreneurship Training
Creators: name: Giordano, M. E.
Publisher: name: Zenodo
Year: 2022
Subjects: subject: Hemispheric Analyzing All Sky Imager
subject: HAASI™ Technology Instrumentation
subject: RGBa ColorThresholding
subject: embedded-systems
subject: Cloud Mask Product
subject: Dust Mask Product
subject: Clear Sky Visual Spectrum Irradiance
subject: Power Generation/Provider Market Sector
subject: Industrial/Commercial Market Sector
subject: Residential User Market Sector
subject: Autonomous System Analysis
subject: Solar Forecasting
subject: Portable Field Instruments
subject: Basic Solar/Cloud research
subject: Commercial/Industrial facilities -gridded
subject: Utility Scale Energy Providers - gridded
subject: Residential –Gridded
subject: Residential/Agricultural – Non gridded
subject: http://aims.fao.org/aos/agrovoc/c_14415
subject: https://lod.nal.usda.gov/nalt/137077
subject: http://id.cabi.org/cabt/113317

description: This is a document file in PDF version of a slide deck presentation made by the author as an overview of development of a proprietary field portable monitoring unit based in HAASI™ technologies. It is anticipated that a video version with mp3 audio may become available at a later date. The author welcomes interested researcher and potential collaborators to contact him directly.
description: This document is likely to be revised as more off-the-shelf micro electronic parts and micro-Single Board Computers become available and improve. This is material represents the original work of the author M. E. Giordano, including intellectual property presented and the composition of the graphic materials in this upload. Data from outside sources is credited as depicted in a composed slide. Please respect the desire of the author to make inquiry regarding use of images, notions, and figures presented.
Calculation of two-centre two-electron integrals over Slater-type orbitals revisited. II. Neumann expansion of the exchange integrals
Creators: name: Lesiuk, Michał
name: Moszynski, Robert
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this paper we consider calculation of two-centre exchange integrals over Slater-type orbitals (STOs). We apply the Neumann expansion of the Coulomb interaction potential and consider calculation of all basic quantities which appear in the resulting expression. Analytical closed-form equations for all auxiliary quantities have already been known but they suffer from large digital erosion when some of the parameters are large or small. We derive two differential equations which are obeyed by the most difficult basic integrals. Taking them as a starting point, useful series expansions for small parameter values or asymptotic expansions for large parameter values are systematically derived. The resulting novel expansions replace the corresponding analytical expressions when the latter introduce significant cancellations. Additionally, we reconsider numerical integration of some necessary quantities and present a new way to calculate the integrand with a controlled precision. All proposed methods are combined to lead to a general, stable algorithm. We perform extensive numerical tests of the introduced expressions to verify their validity and usefulness. Advances reported here provide methodology to compute two-electron exchange integrals over STOs for a broad range of the nonlinear parameters and large angular momenta.
Physics of F-theory compactifications without section
Creators: name: Anderson, Lara B.
name: García-Etxebarria, Iñaki
name: Grimm, Thomas W.
name: Keitel, Jan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the physics of F-theory compactifications on genus-one fibrations without section by using an M-theory dual description. The five-dimensional action obtained by considering M-theory on a Calabi-Yau threefold is compared with a six-dimensional F-theory effective action reduced on an additional circle. We propose that the six-dimensional effective action of these setups admits geometrically massive U(1) vectors with a charged hypermultiplet spectrum. The absence of a section induces NS-NS and R-R three-form fluxes in F-theory that are non-trivially supported along the circle and induce a shift-gauging of certain axions with respect to the Kaluza-Klein vector. In the five-dimensional effective theory the Kaluza-Klein vector and the massive U(1)s combine into a linear combination that is massless. This U(1) is identified with the massless U(1) corresponding to the multi-section of the Calabi-Yau threefold in M-theory. We confirm this interpretation by computing the one-loop Chern-Simons terms for the massless vectors of the five-dimensional setup by integrating out all massive states. A closed formula is found that accounts for the hypermultiplets charged under the massive U(1)s.
description: 45 pages, 7 figures, v2: clarifications mainly in section 2, references added
Theory of oblique topological insulators
Creators: name: Moy, Benjamin
name: Goldman, Hart
name: Sohal, Ramanjit
name: Fradkin, Eduardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A long-standing problem in the study of topological phases of matter has been to understand the types of fractional topological insulator (FTI) phases possible in 3+1 dimensions. Unlike ordinary topological insulators of free fermions, FTI phases are characterized by fractional $Θ$-angles, long-range entanglement, and fractionalization. Starting from a simple family of $\mathbb{Z}_N$ lattice gauge theories due to Cardy and Rabinovici, we develop a class of FTI phases based on the physical mechanism of oblique confinement and the modern language of generalized global symmetries. We dub these phases oblique topological insulators. Oblique TIs arise when dyons -- bound states of electric charges and monopoles -- condense, leading to FTI phases characterized by topological order, emergent one-form symmetries, and gapped boundary states not realizable in 2+1-D alone. Based on the lattice gauge theory, we present continuum topological quantum field theories (TQFTs) for oblique TI phases involving fluctuating one-form and two-form gauge fields. We show explicitly that these TQFTs capture both the generalized global symmetries and topological orders seen in the lattice gauge theory. We also demonstrate that these theories exhibit a universal "generalized magnetoelectric effect" in the presence of two-form background gauge fields. Moreover, we characterize the possible boundary topological orders of oblique TIs, finding a new set of boundary states not studied previously for these kinds of TQFTs.
description: 67 pages, 4 figures, 5 appendices. v2: new appendix, added references, and minor changes. v3: light revisions, additional discussion in Section 6 and Appendix E, and updated acknowledgements and references
D-BAS - A dialog-based online argumentation system
Creators: name: Krauthoff, T.
name: Meter, C.
name: Baurmann, M.
name: Betz, G.
name: Mauve, M.
Publisher: name: Karlsruhe
Year: 2018
Subjects: online argumentation
dialog-based argumentation
online participation

description: In this paper, we present D-BAS, a dialog-based online argumentation system, tailored to support e-participation processes. The main idea of D-BAS is to let users exchange proposals and arguments with each other in the form of a timeshifted dialog where arguments are presented and acted upon one-at-a-time. We highlight the key research challenges that needed to be addressed in order to realize such a system, provide solutions for those challenges, report on a full scale implementation of D-BAS and summarize the findings from a real world e-participation process, where D-BAS provided the infrastructure for online argumentation.
title: Ireland Report. Sustainable Governance Indicators 2022
Creators: name: Colfer, Barry
name: O'Brennan, John
name: Bandelow, Nils C.
Publisher: name: Bertelsmann Stiftung
Year: 2022
Subjects: Governance
Democracy
Regierungshandeln
Demokratie

description: In 2019, the Irish economy again performed impressively on key macroeconomic indicators. GDP growth was close to 5% and GNP growth was over 4%. Unemployment fell to 5%, a remarkable achievement given that it had been as high as 16% in 2012. Inflation remained at a very low rate of around 1%. The general government balance was in surplus at 0.2% and the general government debt as a percentage of GDP was 59%.
UAVs Beneath the Surface: Cooperative Autonomy for Subterranean Search and Rescue in DARPA SubT
Creators: name: Petrlik, Matej
name: Petracek, Pavel
name: Kratky, Vit
name: Musil, Tomas
name: Stasinchuk, Yurii
name: Vrba, Matous
name: Baca, Tomas
name: Hert, Daniel
name: Pecka, Martin
name: Svoboda, Tomas
name: Saska, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Multiagent Systems (cs.MA)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents a novel approach for autonomous cooperating UAVs in search and rescue operations in subterranean domains with complex topology. The proposed system was ranked second in the Virtual Track of the DARPA SubT Finals as part of the team CTU-CRAS-NORLAB. In contrast to the winning solution that was developed specifically for the Virtual Track, the proposed solution also proved to be a robust system for deployment onboard physical UAVs flying in the extremely harsh and confined environment of the real-world competition. The proposed approach enables fully autonomous and decentralized deployment of a UAV team with seamless simulation-to-world transfer, and proves its advantage over less mobile UGV teams in the flyable space of diverse environments. The main contributions of the paper are present in the mapping and navigation pipelines. The mapping approach employs novel map representations -- SphereMap for efficient risk-aware long-distance planning, FacetMap for surface coverage, and the compressed topological-volumetric LTVMap for allowing multi-robot cooperation under low-bandwidth communication. These representations are used in navigation together with novel methods for visibility-constrained informed search in a general 3D environment with no assumptions about the environment structure, while balancing deep exploration with sensor-coverage exploitation. The proposed solution also includes a visual-perception pipeline for on-board detection and localization of objects of interest in four RGB stream at 5 Hz each without a dedicated GPU. Apart from participation in the DARPA SubT, the performance of the UAV system is supported by extensive experimental verification in diverse environments with both qualitative and quantitative evaluation.
description: Submitted to Field Robotics Special Issue: DARPA Subterranean Challenge, Advancement and Lessons Learned from the Finals
Riemannian CUR Decompositions for Robust Principal Component Analysis
Creators: name: Hamm, Keaton
name: Meskini, Mohamed
name: Cai, HanQin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Robust Principal Component Analysis (PCA) has received massive attention in recent years. It aims to recover a low-rank matrix and a sparse matrix from their sum. This paper proposes a novel nonconvex Robust PCA algorithm, coined Riemannian CUR (RieCUR), which utilizes the ideas of Riemannian optimization and robust CUR decompositions. This algorithm has the same computational complexity as Iterated Robust CUR, which is currently state-of-the-art, but is more robust to outliers. RieCUR is also able to tolerate a significant amount of outliers, and is comparable to Accelerated Alternating Projections, which has high outlier tolerance but worse computational complexity than the proposed method. Thus, the proposed algorithm achieves state-of-the-art performance on Robust PCA both in terms of computational complexity and outlier tolerance.
Annotating Affect in the Field: A Case Study on the Usability of a Minimalist Smartwatch User Interface for Affect Annotation
Creators: name: Schneegans, Tim
name: Niclas, Andry
name: Greiner, Kirsten
name: Benke, Ivo Dr.
name: Mädche, Alexander Prof. Dr.
name: Beigl, Michael
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023
Subjects: Wearables
User Interfaces
UX Design
Smartwatches
Ambulatory Assessment
Ecological Momentary Assessment
Affect Assessment
Human-Computer-Interaction
Field evaluation

description: Successful empathetic interaction requires an accurate understanding of the interaction partner's affect dynamics. Self-reported annotations provide a way to better understand affect and empathy in real-life; however, the necessary user interactions for collecting such data must be designed to be as unobtrusive as possible. To address this challenge, we explore the potential of a smartwatch annotation application for affect that aims to minimize user interaction effort while maximizing usability. In a field study conducted as part of a student career fair (N=9), we evaluated the feasibility and usability of our app. Participants reported high usability scores and our data collection successfully captured self-reported affect labels at a high temporal resolution. Our work contributes to the challenge of providing minimal obtrusive applications for the collection of self-reported labels of affective states.
JT Gravity from Partial Reduction and Defect Extremal Surface
Creators: name: Deng, Feiyu
name: An, Yu-Sen
name: Zhou, Yang
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose the three-dimensional bulk dual for Jackiw-Teitelboim gravity coupled with CFT$_2$ bath based on partial reduction. The bulk dual is classical AdS gravity with a defect brane which has small fluctuation in transverse direction. We derive full Jackiw-Teitelboim gravity action by considering the transverse fluctuation as a dilaton field. We demonstrate that the fine grained entropy computed from island formula precisely agrees with that computed from defect extremal surface. Our construction provides a Lorentzian higher dimensional dual for Jackiw-Teitelboim gravity and therefore offers a framework to study problems such as black hole information paradox as well as gravity/ensemble duality.
description: 8 pages, 3 figures
Two notes on continuous modelling of porous media
Creators: name: Wilmański, Krzysztof
name: Albers, Bettina
Publisher: name: Weierstrass Institute
Year: 2000
Subjects: subject: porous media
subject: objectivity
subject: consolidation
subject: 76S05
subject: 73B05

description: The note is devoted to the analysis of contributions of relative accelerations to partial momentum balance equations of multicomponent models of porous materials. We show that such contributions violate the principle of material ob jectivity. Even if we ignore this principle contributions of relative accelerations are either undistinguishable from other contributions or yield unacceptable modes of propagation of sound waves or both. Consequently we conclude that such contributions should be ignored completely in the construction of macroscopical models of porous materials.
Unified approach to the nonlinear Rabi models
Creators: name: Duan, Liwei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An analytical approach is proposed to study the two-photon, two-mode and intensity-dependent Rabi models. By virtue of the su(1,1) Lie algebra, all of them can be unified to the same Hamiltonian with $\mathcal{Z}_2$ symmetry. There exist exact isolated solutions, which are located at the level crossings between different parities and correspond to eigenstates with finite dimension. Beyond the exact isolated solutions, the regular spectrum can be achieved by finding the roots of the G-function. The corresponding eigenstates are of infinite dimension. It is noteworthy that the expansion coefficients of the eigenstates present an exponential decay behavior. The decay rate decreases with increasing coupling strength. When the coupling strength tends to the spectral collapse point $g \rightarrow ω/ 2$, the decay rate tends to zero which prevents the convergence of the wave functions. This work paves a way for the analysis of novel physics in nonlinear quantum optics.
description: 14 pages, 3 figures
Interpolation for function spaces related to mixed boundary value problems
Creators: name: Griepentrog, Jens André
name: Gröger, Konrad
name: Kaiser, Hans-Christoph
name: Rehberg, Joachim
Publisher: name: Weierstrass Institute
Year: 2000
Subjects: subject: Interpolation theory
subject: function spaces
subject: 46B70
subject: 46E35
subject: 35J25

description: Interpolation theorems are proved for Sobolev spaces of functions on nonsmooth domains with vanishing trace on a part of the boundary.
Nonresonant high frequency excitation of mechanical vibrations in graphene based nanoresonator
Creators: name: Eriksson, Axel M.
name: Voinova, Marina V.
name: Gorelik, Leonid Y.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically analyse the dynamics of a suspended graphene membrane which is in tunnel contact with grounded metallic electrodes and subjected to ac-electrostatic potential induced by a gate electrode. It is shown that for such system the retardation effects in the electronic subsystem generate an effective pumping for the relatively slow mechanical vibrations if the driving frequency exceeds the inverse charge relax- ation time. Under this condition there is a critical value of the driving voltage ampli- tude above which the pumping overcomes the intrinsic damping of the mechanical resonator leading to a mechanical instability. This nonresonant instability is saturated by nonlinear damping and the system exhibits self-sustained oscillations of relatively large amplitude.
description: Major revision
Generic Optical Singularities and Beam-field Phenomena due to General Paraxial Beam Reflection at a Plane Dielectric Interface
Creators: name: Debnath, Anirban
name: Viswanathan, Nirmal K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A single paraxial beam reflection at a plane dielectric interface, configured appropriately, can lead to the formation of a polarization singularity in the inhomogeneously polarized output beam-field for any central angle of incidence. In this paper we derive the necessary condition to realize this effect. We explore the phase singularity characteristics associated to this polarization-singular field; and explore the dynamics of the singularities due to controlled variations of the input polarization. The simulation-generated exact field information lead to the exploration of the unique Goos-Hänchen, Imbert-Fedorov and spin shifts of the optical-singular fields and the anticipation of an exact mathematical characterization of spin-orbit interaction phenomena involved therein. The formation of a phase singularity independent of a polarization singularity is explained subsequently. Interrelating these seemingly unconnected beam-field phenomena and generic optical singularities can lead to a significant and fundamental understanding of the inhomogeneously polarized beam-field; and additionally, our singularity generation method can find potential application in experimental characterization of the involved dielectric media.
description: 11 pages, 9 figures
Analysis and optimization of nonsmooth mechanical structures
Creators: name: Ignat, Anca
name: Sprekels, Jürgen
name: Tiba, Dan
Publisher: name: Weierstrass Institute
Year: 2000
Subjects: subject: Lipschitz arches
subject: discontinuous plate thickness
subject: shape optimization
subject: 49Q10
subject: 35J35
subject: 34A55

description: It is our aim to give a new treatment for some classical models of arches and plates and for their optimization. In particular, our approach allows to study nonsmooth arches, while the standard assumptions from the literature require W3,∞-regularity for the parametric representation. Moreover, by a duality-type argument, the deformation of the arches may be explicitly expressed by integral formulas. As examples for the shape optimization problems under study, we mention the design of the middle curve of a clamped arch or of the thickness of a clamped plate such that, under a prescribed load, the obtained deflection satisfies certain desired properties. In all cases, no smoothness is required for the design parameters.
On a conjecture of Wilf about the Frobenius number
Creators: name: Moscariello, Alessio
name: Sammartano, Alessio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11D07, 11B75, 20M14

description: Given coprime positive integers $a_1 < ...< a_d$, the Frobenius number $F$ is the largest integer which is not representable as a non-negative integer combination of the $a_i$. Let $g$ denote the number of all non-representable positive integers: Wilf conjectured that $d \geq \frac{F+1}{F+1-g}$. We prove that for every fixed value of $\lceil \frac{a_1}{d} \rceil$ the conjecture holds for all values of $a_1$ which are sufficiently large and are not divisible by a finite set of primes. We also propose a generalization in the context of one-dimensional local rings and a question on the equality $d = \frac{F+1}{F+1-g}$.
Modeling and simulation of strained quantum wells in semiconductor lasers
Creators: name: Bandelow, Uwe
name: Kaiser, Hans-Christoph
name: Koprucki, Thomas
name: Rehberg, Joachim
Publisher: name: Weierstrass Institute
Year: 2000
Subjects: subject: quantum well laser
subject: band structure
subject: kp-method
subject: Schrödinger-Poisson systems
subject: exchange-correlation effects
subject: optical gain
subject: semiconductor laser simulation
subject: 78A60
subject: 68U20
subject: 65Z05
subject: 42.55.Px
subject: 73.20.Dx
subject: 85.60.Bt
subject: 78.66.Fd

description: A model allowing for efficiently obtaining band structure information on semiconductor Quantum Well structures will be demonstrated which is based on matrix-valued kp-Schrödinger operators. Effects such as confinement, band mixing, spin-orbit interaction and strain can be treated consistently. The impact of prominent Coulomb effects can be calculated by including the Hartree interaction via the Poisson equation and the bandgap renormalization via exchange-correlation potentials, resulting in generalized (matrix-valued) Schrödinger-Poisson systems. Band structure information enters via densities and the optical response function into comprehensive simulations of Multi Quantum Well lasers. These device simulations yield valuable information on device characteristics, including effects of carrier transport, waveguiding and heating and can be used for optimization.
Flow regime transitions in dense non-Brownian suspensions: rheology, microstructural characterisation and constitutive modelling
Creators: name: Ness, Christopher
name: Sun, Jin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Shear flow of dense, non-Brownian suspensions is simulated using the discrete element method, taking particle contact and hydrodynamic lubrication into account. The resulting flow regimes are mapped in the parametric space of solid volume fraction, shear rate, fluid viscosity and particle stiffness. Below a critical volume fraction $ϕ_c$, the rheology is governed by the Stokes number, which distinguishes between viscous and inertial flow regimes. Above $ϕ_c$, a quasistatic regime exists for low and moderate shear rates. At very high shear rates, the $ϕ$ dependence is lost and soft particle rheology is explored. The transitions between rheological regimes are associated with the evolving contribution of lubrication to the suspension stress. Transitions in microscopic phenomena such as inter-particle force distribution, fabric and correlation length are found to correspond to those in the macroscopic flow. Motivated by the bulk rheology, a constitutive model is proposed combining a viscous pressure term with a dry granular model presented by Chialvo, Sun and Sundaresan [Phys. Rev. E. \textbf{85}, 021305 (2012)]. The model is shown to successfully capture the flow regime transitions.
A Survey on Learnable Evolutionary Algorithms for Scalable Multiobjective Optimization
Creators: name: Liu, Songbai
name: Lin, Qiuzhen
name: Li, Jianqiang
name: Tan, Kay Chen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Recent decades have witnessed great advancements in multiobjective evolutionary algorithms (MOEAs) for multiobjective optimization problems (MOPs). However, these progressively improved MOEAs have not necessarily been equipped with scalable and learnable problem-solving strategies for new and grand challenges brought by the scaling-up MOPs with continuously increasing complexity from diverse aspects, mainly including expensive cost of function evaluations, many objectives, large-scale search space, time-varying environments, and multi-task. Under different scenarios, divergent thinking is required in designing new powerful MOEAs for solving them effectively. In this context, research studies on learnable MOEAs with machine learning techniques have received extensive attention in the field of evolutionary computation. This paper begins with a general taxonomy of scaling-up MOPs and learnable MOEAs, followed by an analysis of the challenges that these MOPs pose to traditional MOEAs. Then, we synthetically overview recent advances of learnable MOEAs in solving various scaling-up MOPs, focusing primarily on four attractive directions (i.e., learnable evolutionary discriminators for environmental selection, learnable evolutionary generators for reproduction, learnable evolutionary evaluators for function evaluations, and learnable evolutionary transfer modules for sharing or reusing optimization experience). The insight of learnable MOEAs is offered to readers as a reference to the general track of the efforts in this field.
description: 23 pages, 8 figures
Fannie Mae's National Housing Survey Monthly Home Purchase Sentiment Index (HPSI) and Key Indicators-April, 2023 (a subset of the complete monthly Fannie Mae National Housing Survey)
Creators: name: Foundation, Fannie Mae
Publisher: name: Roper Center for Public Opinion Research
Year: 2023

description: Economy on right/wrong track (1); personal financial situation (1); good/bad time to buy a house (1); good/bad time to sell a house (1); home price changes (3); rental price changes (3); mortgage interest rate changes (1); ability to obtain a home mortgage today (1); current homeownership status (1); renting vs. buying a home in the future (1); concern about unemployment (1); change in income (1).
Statistical inference for time-inhomogeneous volatility models
Creators: name: Mercurio, Danilo
name: Spokoiny, Vladimir
Publisher: name: Weierstrass Institute
Year: 2000
Subjects: subject: stochastic volatility model
subject: adaptive estimation
subject: local homogeneity
subject: 62M10
subject: 62P20

description: This paper offers a new approach for estimation and few-step ahead forecasting of the volatility of financial time series. No assumption is made about the parametric form of the processes, on the contrary we only suppose that the volatility can be approximated by a constant over some interval. In such a framework the main problem consists in filtering this interval of time homogeneity, then the estimate of the volatility can be simply obtained by local averaging. We construct an algorithm which can perform this task and investigate it both from the theoretical point of view and through Monte Carlo simulations. Finally the procedure is applied to some exchange rate data sets and a comparison with a standard GARCH model is also provided. Both models appear to be able of explaining many of the features of the data, nevertheless the new approach based on local constant approximation seems to be slightly superior as far as the out of sample results are taken into consideration.
Wavelet Approach to Search for Sterile Neutrinos in Tritium $β$-Decay Spectra
Creators: name: Mertens, S.
name: Dolde, K.
name: Korzeczek, M.
name: Glueck, F.
name: Groh, S.
name: Martin, R. D.
name: Poon, A. W. P.
name: Steidl, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Sterile neutrinos in the mass range of a few keV are candidates for both cold and warm dark matter. An ad-mixture of a heavy neutrino mass eigenstate to the electron neutrino would result in a minuscule distortion - a 'kink' - in a $β$-decay spectrum. In this paper we show that a wavelet transform is a very powerful shape analysis method to detect this signature. For a tritium source strength, similar to what is expected from the KATRIN experiment, a statistical sensitivity to active-to-sterile neutrino mixing down to $\sin^2 θ= 10^{-6}$ ($90\%$ CL) can be obtained after 3 years of measurement time. It is demonstrated that the wavelet approach is largely insensitive to systematic effects that result in smooth spectral modifications. To make full use of this analysis technique a high resolution measurement (FWHM of $\sim100$~eV) of the tritium $β$-decay spectrum is required.
Submillimeter-wave cornea phantom sensing over an extended depth of field with an axicon-generated Bessel beam
Creators: name: Baggio, Mariangela
name: Tamminen, Aleksi
name: Lamberg, Joel
name: Grigorev, Roman
name: Pälli, Samu-Ville
name: Ala-Laurinaho, Juha
name: Nefedova, Irina
name: Bourges, Jean-Louis
name: Deng, Sophie X.
name: Brown, Elliott R.
name: Wallace, Vincent P.
name: Taylor, Zachary D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Medical Physics (physics.med-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The feasibility of a 220 - 330 GHz zero order axicon generated Bessel beam for corneal water content was explored. Simulation and experimental data from the 25-degree cone angle hyperbolic-axicon lens illuminating metallic spherical targets demonstrate a monotonically decreasing, band integrated, backscatter intensity for increasing radius of curvature from 7 - 11 mm, when lens reflector and optical axis are aligned. Further, for radii >= 9.5 mm, maximum signal was obtained with a 1 mm transverse displacement between lens and reflector optical axes arising from spatial correlation between main lobe and out of phase side lobes. Thickness and permittivity parameter estimation experiments were performed on an 8 mm radius of curvature, 1 mm thick fused quartz dome over a 10 mm axial span. Extracted thickness and permittivity varied by less than ~ 25 $μ$m and 0.2 respectively after correction for superluminal velocity. Estimated water permittivity and thickness of water backed gelatin phantoms showed significantly more variation due to a time varying radius of curvature.
description: 11 pages; submitted to IEEE Transactions on Terahertz Science and Technology
A Bayesian method for detecting stellar flares
Creators: name: Pitkin, M.
name: Williams, D.
name: Fletcher, L.
name: Grant, S. D. T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a Bayesian-odds-ratio-based algorithm for detecting stellar flares in light curve data. We assume flares are described by a model in which there is a rapid rise with a half-Gaussian profile, followed by an exponential decay. Our signal model also contains a polynomial background model. This is required to fit underlying light curve variations that are expected in the data, which could otherwise partially mimic a flare. We characterise the false alarm probability and efficiency of this method and compare it with a simpler thresholding method based on that used in Walkowicz et al (2011). We find our method has a significant increase in detection efficiency for low signal-to-noise ratio (S/N) flares. For a conservative false alarm probability our method can detect 95% of flares with S/N less than ~20, as compared to S/N of ~25 for the simpler method. As an example we have applied our method to a selection of stars in Kepler Quarter 1 data. The method finds 687 flaring stars with a total of 1873 flares after vetos have been applied. For these flares we have characterised their durations and and signal-to-noise ratios.
description: Accepted for MNRAS. The code used for the analysis can be found at https://github.com/BayesFlare/bayesflare/releases/tag/v1.0.0
title: Covid-19 und Psychotherapie
Creators: name: Von Der Decken, Thyra Charlotte
Year: 2021

description: Ziel der Arbeit war es, zu erheben, welchen Einfluss die Covid-19-Pandemie auf die Arbeit und das Wohlbefinden von Psychotherapeut*innen hatte. Aufgrund der aktuellen und neuartigen Situation gab es noch keine Forschung, die sich mit dieser Thematik aus Sicht der Psychotherapeut*innen auseinandersetzte. Die Daten wurden anhand eines explorativen Leitfadeninterviews erhoben. Es wurde zehn Psychotherapeut*innen aus Österreich und Deutschland befragt. Davon ordneten sich sieben Teilnehmer*innen dem weiblichen und drei dem männlichen Geschlecht zu. Die Psychotherapeut*innen waren zum Zeitpunkt der Interviews zwischen 30 und 84 Jahren alt (M = 55.30, SD = 15.36). Im Interview wurde zum einen die Rolle der Telefon- und Videotherapie und zum anderen der Einfluss der Pandemie auf das psychotherapeutische Arbeiten und die therapeutische Beziehung thematisiert. Des Weiteren hatten die Psychotherapeut*innen die Möglichkeit für Ergänzungen. Diese Daten wurden anschließend mit Hilfe der thematischen Analyse ausgewertet. Dabei entstanden folgende Themen: Präsenztherapie, Telefon- und Videotherapie, Folgen und Einfluss der Covid-19-Pandemie, Lockdowns, und Zukunft. Insbesondere für die Präsenztherapie im Zusammenhang mit den Hygieneauflagen konnten erste Kenntnisse gewonnen werden. Die Studie lieferte zusätzliche Erkenntnisse für die Telefon- und Videotherapie im deutschsprachigen Raum. Diese Untersuchung bildet eine erste Grundlage für spätere Forschung. Weitere Forschung ist wichtig für die Sicherung der Ergebnisse.
description: This study aimed to find out what impact the Covid-19 pandemic had on the therapists' work and well-being from their point of view. Due to the current and new situation, there is no research from the psychotherapists' perspective yet. Data were collected using an exploratory, semi-structured interview. The author interviewed ten psychotherapists from Austria and Germany. Seven participants classified themselves as female and three as male. The psychotherapists were between 30 and 84 years old (M = 55.30, SD = 15.36). During the interview, the role of telephone and video therapy, as well as the impact of the pandemic on the therapeutic work and the therapeutic relationship were discussed. Furthermore, the therapists had the opportunity for their additions. These data were then analyzed according to the thematic analysis. Thereby the themes emerged: Presence therapy, telephone and video therapy, consequences and influence of the pandemic, lockdowns, and the future. In particular, initial knowledge was gained for presence therapy concerning hygiene requirements. The study further provided additional knowledge for telephone and video therapy in German-speaking countries. This study provides an initial foundation for subsequent research. Further research is important for investigating these results.
title: L'accessibilité muséale pour les personnes handicapées de la vue
title: barrières et stratégies : une étude ethnographique
titleType: Subtitle
title: L'accessibilité muséale pour les personnes handicapées de la vue
titleType: AlternativeTitle
Creators: name: Baechtiger, Alexa
name: Beuchat, Alexia
name: Conod, Bertrand
Publisher: name: Unknown
Year: 0
Subjects: subject: accessibilité
subject: malvoyance
subject: musées
subject: stratégies
subject: ergothérapie

description: Contexte : Selon Mesquita & Carneiro (2016), les personnes malvoyantes expérimentent encore de la discrimination dans les musées du fait d’une accessibilité́ aux expositions et aux bâtiments limitée. C’est pourquoi il est pertinent de s’intéresser à leur participation dans des activités de loisirs, cette population étant en perpétuelle augmentation. En effet, selon l’Union Centrale suisse pour le Bien des Aveugles (UCBA), le nombre de personnes malvoyantes est de 325’000 dont 10’000 personnes aveugles (Spring, 2012). Dans ce travail, le terme de personne malvoyante ou de personne déficiente visuelle sera utilisé́ de manière indifférenciée. But : Le but de cette étude est de comprendre quels sont les obstacles perçus par les personnes malvoyantes lors des visites muséales au niveau du bâtiment et des expositions ainsi que d'identifier les stratégies mises en place par ces personnes pour participer pleinement à cette activité́ de loisir. Méthodologie : Une approche qualitative de type ethnographique a été́ employée lors de cette étude. La récolte des données s’est faite en utilisant deux outils : des observations participantes et des entretiens semi-structurés. Les participants à l’étude (n=4) sont des personnes intéressées par les visites muséales. Résultats : L’analyse des résultats a mis en évidence que l’occupation « visiter un musée » s’est subdivisée en deux activités qui sont : « se déplacer dans l’environnement physique » et « regarder les œuvres ». De plus, trois thèmes principaux sont ressortis : la reconstitution de l’image mentale, les stratégies pour la prise d’information et la question du danger lors des visites muséales. Les résultats de l’étude ont également mené́ à une liste de conseils d’adaptations destinées aux musées afin de garantir leur accessibilité́ à des personnes malvoyantes. Conclusion : L’accessibilité au musée se compose de l’accessibilité au bâtiment et de celle à l’exposition. Il existe une certaine synergie entre ces deux accessibilités. En effet, une personne malvoyante peut avoir accès à un bâtiment sans pour autant avoir accès à l’exposition qu’il contient. Cela mettrait donc l’occupation de « visiter un musée » en échec. [résumé des auteur-e-s]
Braneworld localisation in hyperbolic spacetime
Creators: name: Crampton, B.
name: Pope, C. N.
name: Stelle, K. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a construction employing a type IIA supergravity and 3-form flux background together with an NS5-brane that localises massless gravity near the 5-brane worldvolume. The nonsingular underlying type IIA solution is a lift to 10D of the vacuum solution of the 6D Salam-Sezgin model and has a hyperbolic ${\cal H}^{(2,2)}\times S^1$ structure in the lifting dimensions. A fully back-reacted solution including the NS5-brane is constructed by recognising the 10D Salam-Sezgin vacuum solution as a "brane resolved through transgression." The background hyperbolic structure plays a key rôle in generating a mass gap in the spectrum of the transverse-space wave operator, which gives rise to the localisation of gravity on the 6D NS5-brane worldvolume, or, equally, in a further compactification to 4D. Also key to the successful localisation of gravity is the specific form of the corresponding transverse wavefunction Schrödinger problem, which asymptotically involves a $V=-1/(4ρ^2)$ potential, where $ρ$ is the transverse-space radius, and for which the NS5-brane source gives rise to a specific choice of self-adjoint extension for the transverse wave operator. The corresponding boundary condition as $ρ\to0$ ensures the masslessness of gravity in the effective braneworld theory. Above the mass gap, there is a continuum of massive states which give rise to small corrections to Newton's law.
description: 32 pages, 2 figures; misprints corrected & some clarification added
Bayesian Optimization Over Iterative Learners with Structured Responses: A Budget-aware Planning Approach
Creators: name: Belakaria, Syrine
name: Doppa, Janardhan Rao
name: Fusi, Nicolo
name: Sheth, Rishit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The rising growth of deep neural networks (DNNs) and datasets in size motivates the need for efficient solutions for simultaneous model selection and training. Many methods for hyperparameter optimization (HPO) of iterative learners, including DNNs, attempt to solve this problem by querying and learning a response surface while searching for the optimum of that surface. However, many of these methods make myopic queries, do not consider prior knowledge about the response structure, and/or perform a biased cost-aware search, all of which exacerbate identifying the best-performing model when a total cost budget is specified. This paper proposes a novel approach referred to as {\bf B}udget-{\bf A}ware {\bf P}lanning for {\bf I}terative Learners (BAPI) to solve HPO problems under a constrained cost budget. BAPI is an efficient non-myopic Bayesian optimization solution that accounts for the budget and leverages the prior knowledge about the objective function and cost function to select better configurations and to take more informed decisions during the evaluation (training). Experiments on diverse HPO benchmarks for iterative learners show that BAPI performs better than state-of-the-art baselines in most cases.
Fannie Mae's National Housing Survey Monthly Home Purchase Sentiment Index (HPSI) and Key Indicators-May, 2023 (a subset of the complete monthly Fannie Mae National Housing Survey)
Creators: name: Foundation, Fannie Mae
Publisher: name: Roper Center for Public Opinion Research
Year: 2023

description: Economy on right/wrong track (1); personal financial situation (1); good/bad time to buy a house (1); good/bad time to sell a house (1); home price changes (3); rental price changes (3); mortgage interest rate changes (1); ability to obtain a home mortgage today (1); current homeownership status (1); renting vs. buying a home in the future (1); concern about unemployment (1); change in income (1).
A scalable superconducting quantum simulator with long-range connectivity based on a photonic bandgap metamaterial
Creators: name: Zhang, Xueyue
name: Kim, Eunjong
name: Mark, Daniel K.
name: Choi, Soonwon
name: Painter, Oskar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Synthesis of many-body quantum systems in the laboratory can help provide further insight into the emergent behavior of quantum materials, whose properties may provide improved methods for energy conversion, signal transport, or information processing. While the majority of engineerable many-body systems, or quantum simulators, consist of particles on a lattice with local interactions, quantum systems featuring long-range interactions are particularly challenging to model and interesting to study due to the rapid spatio-temporal growth of quantum entanglement and correlations. Here, we present a scalable quantum simulator architecture based on a linear array of superconducting qubits locally connected to an extensible photonic-bandgap metamaterial. The metamaterial acts both as a quantum bus mediating qubit-qubit interactions, and as a readout channel for multiplexed qubit-state measurement. As an initial demonstration, we realize a 10-qubit simulator of the one-dimensional Bose-Hubbard model with in situ tunability of both the hopping range and the on-site interaction. We characterize the Hamiltonian of the system using a measurement-efficient protocol based on quantum many-body chaos. Further, we study the many-body quench dynamics of the system, revealing through global bit-string statistics the predicted crossover from integrability to ergodicity as the hopping range increases. The metamaterial quantum bus architecture presented here can be extended to two-dimensional lattice systems and used to generate a wide range of qubit interactions, expanding the accessible Hamiltonians for analog quantum simulation and increasing the flexibility in implementing quantum circuits for gate-based computations
description: 34 pages, 18 figures, 1 Table