cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Physics of Fast Radio Bursts
Creators: name: Zhang, Bing
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs), millisecond-duration bursts prevailing in the radio sky, are the latest big puzzle in the universe and have been a subject of intense observational and theoretical investigations in recent years. The rapid accumulation of the observational data has painted the following sketch about the physical origin of FRBs: They predominantly originate from cosmological distances so that their sources produce the most extreme coherent radio emission in the universe; at least some, probably most, FRBs are repeating sources that do not invoke cataclysmic events; and at least some FRBs are produced by magnetars, neutron stars with the strongest magnetic fields in the universe. Many open questions regarding the physical origin(s) and mechanism(s) of FRBs remain. This article reviews the phenomenology and possible underlying physics of FRBs. Topics include: a summary of the observational data, basic plasma physics, general constraints on FRB models from the data, radiation mechanisms, source and environment models, propagation effects, as well as FRBs as cosmological probes. Current pressing problems and future prospects are also discussed.
description: Published in Reviews of Modern Physics. This is author's version
Constrained Reversible system for Navier-Stokes Turbulence: evidence for Gallavotti's equivalence conjecture
Creators: name: Jaccod, Alice
name: Chibbaro, Sergio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Following the Gallavotti's conjecture, Stationary states of Navier-Stokes fluids are proposed to be described equivalently by alternative equations besides the NS equation itself. We propose a model system symmetric under time-reversal based on the Navier-Stokes equations constrained to keep the Enstrophy constant. It is demonstrated through high-resolved numerical experiments that the reversible model evolves to a stationary state which reproduces quite accurately all statistical observables relevant for the physics of turbulence extracted by direct numerical simulations at different Reynolds numbers. The possibility of using reversible models to mimic turbulence dynamics is of practical importance for coarse-grained version of Navier-Stokes equations, as used in Large-eddy simulations. Furthermore, the reversible model appears mathematically simpler, since enstrophy is bounded to be constant for every Reynolds. Finally, the theoretically interest in the context of statistical mechanics is briefly discussed.
The Effects of Isometric Handgrip Exercise and Post-Exercise Circulatory Occlusion on Muscle Sympathetic Nerve Activity: A Systematic Review and Meta-Analysis Online Supplement
Creators: name: Maier, Lauren
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 420702
subject: Exercise physiology

description: Online Supplement for manuscript: The Effects of Isometric Handgrip Exercise and Post-Exercise Circulatory Occlusion on Muscle Sympathetic Nerve Activity: A Systematic Review and Meta-Analysis
Letter from J. E. [John Edgar] McAllister to Mr. [James] Goldie, December 12, 1915
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to Mr. [James] Goldie from J. E. [John Edgar] McAllister, dated December 12, 1915, regarding taxes and the possibility of James Goldie traveling East to see J. E. McAllister.
Generalized Collective Lamb Shift
Creators: name: Stasiuk, Andrew
name: Gunderman, Lane G.
name: Mandouh, Mohamed El
name: Borneman, Troy W.
name: Cory, David G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hybrid quantum systems consisting of an ensemble of two--level systems interacting with a single--mode electromagnetic field are important for the development of quantum information processors and other quantum devices. These systems are characterized by the set of energy level hybridizations, split by collective Lamb shifts, that occur when the ensemble and field mode interact coherently with high cooperativity. Computing the full set of Lamb shifts is generally intractable given the high dimensionality of many devices. In this work, we present a set of techniques that allow a compact description of the Lamb shift statistics across all collective angular momentum subspaces of the ensemble without using restrictive approximations on the state space. We use these techniques to both analyze the Lamb shift in all subspaces and excitation manifolds and to describe the average observed Lamb shift weighted over the degeneracies of all subspaces.
description: 27 pages, 7 figures
Stochastic Cyclic Inventory Routing with Supply Uncertainty: A Case in Green-Hydrogen Logistics
Creators: name: Hasturk, Umur
name: Schrotenboer, Albert H.
name: Ursavas, Evrim
name: Roodbergen, Kees Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Hydrogen can be produced from water, using electricity. The hydrogen can subsequently be kept in inventory in large quantities, unlike the electricity itself. This enables solar and wind energy generation to occur asynchronously from its usage. For this reason, hydrogen is expected to be a key ingredient for reaching a climate-neutral economy. However, the logistics for hydrogen are complex. Inventory policies must be determined for multiple locations in the network, and transportation of hydrogen from the production location to customers must be scheduled. At the same time, production patterns of hydrogen are intermittent, which affects the possibilities to realize the planned transportation and inventory levels. To provide policies for efficient transportation and storage of hydrogen, this paper proposes a parameterized cost function approximation approach to the stochastic cyclic inventory routing problem. Firstly, our approach includes a parameterized mixed integer programming (MIP) model which yields fixed and repetitive schedules for vehicle transportation of hydrogen. Secondly, buying and selling decisions in case of underproduction or overproduction are optimized further via a Markov decision process (MDP) model, taking into account the uncertainties in production and demand quantities. To jointly optimize the parameterized MIP and the MDP model, our approach includes an algorithm that searches the parameter space by iteratively solving the MIP and MDP models. We conduct computational experiments to validate our model in various problem settings and show that it provides near-optimal solutions. Moreover, we test our approach on an expert-reviewed case study at two hydrogen production locations in the Netherlands. We offer insights for the stakeholders in the region and analyze the impact of various problem elements in these case studies.
Analysis of present-day and future precipitation in the southwestern United States
Creators: name: Hernandez, Manuel
name: Tribbia, Joseph
name: Caron, Julie
name: Worster, Cindy
name: Park, Carol
name: Peña, Aaron
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2011

The southwestern U.S. is one of many regions susceptible to the effects of our changing climate system. Numerous climate phenomena, such as the North American Monsoon and Madden-Julian Oscillation, are known to correlate with precipitation and temperature variations in the Southwest. These processes can be linked to sea surface temperatures (SST) in the tropical Pacific Ocean which also influence global climate. This study explored the relationship between ocean temperatures in the Pacific and temperature and precipitation changes in the southwestern U.S. by comparing observational data in an Intensive Observation Period (IOP) of the Southern Great Plains to the Community Atmosphere Model (CAM 4.0) and the Community Climate System Model (CCSM 4.0). This comparison was used to verify that these model data accurately depicted the present climate and could be used to capture a reasonable prediction for our future climate. Our analysis showed a correlation between tropical Pacific SST and variations in temperature and precipitation in the southwestern U.S. that creates a persistent El Niño effect in part because of an increase in greenhouse gases. Our statistical analysis yielded large values for this correlation, confirming our hypothesis that our changing climate system is affecting weather patterns in the southwestern U.S. through increased tropical Pacific sea surface temperatures.
Design and Fabrication of the Suspended High-Q Spiral Inductors with X-Beams
Creators: name: Hsieh, M. C.
name: Jair, D. K.
name: Fang, Y. K.
name: Lin, C. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: In this paper, deep sub-micron CMOS process compatible high Q on chip spiral inductors with air gap structure were designed and fabricated. In the design the electromagnetic were used for electrical-characteristics and maximum mechanical strength, respectively. The copper wires were capped with electroless Ni plating to prevent the copper from oxidizing. A Si3N4/ SiO2 X-beam was designed to increase the mechanical strength of the inductor in air gap. The enhancement of maximum mechanical strength of a spiral inductor with X-beams is more than 4500 times. Among these structures, the measured maximum quality factor (Q) of the suspending inductor and frequency at maximum Q are improved from 5.2 and 1.6GHz of conventional spiral inductor to 7.3 and 2.1 GHz, respectively.
description: Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/EDA-Publishing)
Comprehensive Study of Multi-scale Jet-medium Interaction
Creators: name: Tachibana, Y.
name: Angerami, A.
name: Arora, R.
name: Bass, S. A.
name: Cao, S.
name: Chen, Y.
name: Dai, T.
name: Du, L.
name: Ehlers, R.
name: Elfner, H.
name: Fan, W.
name: Fries, R. J.
name: Gale, C.
name: He, Y.
name: Heffernan, M.
name: Heinz, U.
name: Jacak, B. V.
name: Jacobs, P. M.
name: Jeon, S.
name: Ji, Y.
name: Kasper, L.
name: Ke, W.
name: Kelsey, M.
name: Kordell, M.
name: Kumar, A.
name: Latessa, J.
name: Lee, Y. -J.
name: Liyanage, D.
name: Lopez, A.
name: Luzum, M.
name: Mak, S.
name: Majumder, A.
name: Mankolli, A.
name: Martin, C.
name: Mehryar, H.
name: Mengel, T.
name: Mulligan, J.
name: Nattrass, C.
name: Oliinychenko, D.
name: Paquet, J. -F.
name: Putschke, J. H.
name: Roland, G.
name: Schenke, B.
name: Schwiebert, L.
name: Sengupta, A.
name: Shen, C.
name: Silva, A.
name: Sirimanna, C.
name: Soeder, D.
name: Soltz, R. A.
name: Soudi, I.
name: Staudenmaier, J.
name: Strickland, M.
name: Velkovska, J.
name: Vujanovic, G.
name: Wang, X. -N.
name: Wolpert, R. L.
name: Zhao, W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explore jet-medium interactions at various scales in high-energy heavy-ion collisions using the JETSCAPE framework. The physics of the multi-stage modeling and the coherence effect at high virtuality is discussed through the results of multiple jet and high-$p_{\mathrm{T}}$ particle observables, compared with experimental data. Furthermore, we investigate the jet-medium interaction involved in the hadronization process.
description: 6 pages, 5 figures, contribution to the Quark Matter 2022 proceedings
Role of normal stress in the creep dynamics and failure of a biopolymer gel
Creators: name: Pommella, Angelo
name: Cipelletti, Luca
name: Ramos, Laurence
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the delayed rupture of biopolymer gels under a constant shear load by simultaneous dynamic light scattering and rheology measurements. We unveil the crucial role of normal stresses built up during gelation: all samples that eventually fracture self-weaken during the gelation process, as revealed by a partial relaxation of the normal stress concomitant to a burst of microscopic plastic rearrangements. Upon applying a shear stress, weakened gels exhibit in the creep regime distinctive signatures in their microscopic dynamics, which anticipate macroscopic fracture by up to thousands of seconds. The dynamics in fracturing gels are faster than those of non-fracturing gels and exhibit large spatio-temporal fluctuations. A spatially localized region with significant plasticity eventually nucleates, expands progressively, and finally invades the whole sample triggering macroscopic failure.
description: accepted for publication in Physical Review Letters
Equivariant $K$-theory of Springer Varieties
Creators: name: Uma, Vikraman
Publisher: name: arXiv
Year: 2023
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55N15, 14M15, 19L99

description: The aim of this paper is to describe the topological equivariant $K$-ring, in terms of generators and relations, of a Springer variety $\mathcal{F}_λ$ of type $A$ associated to a nilpotent operator having Jordan canonical form whose block sizes form a weakly decreasing sequence $λ=(λ_1,\ldots, λ_l)$. This parallels the description of the equivariant cohomology ring of $\mathcal{F}_λ$ due to Abe and Horiguchi and generalizes the description of ordinary topological $K$-ring of $\mathcal{F}_λ$ due to Sankaran and Uma \cite{su}.
description: 26 pages
Detection of mesoscale vortices and their role on subsequent convection
Creators: name: Paulus, Matthew
name: Trier, Stanley
name: Ahijevych, David
name: Lauritzen, Peter
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2011

Mid-level mesoscale vortices impact warm-season precipitation over the United States (US), due to their ability to initiate and focus deep convection. Given their significance to forecasting, it is important to understand these mesoscale vortices, their frequency, and their impact on subsequent convection in greater detail. This research was a pilot study aimed at identifying such vortices using two separate techniques. Vortices were identified through a subjective visual identification technique that relied mostly on composite radar reflectivity and satellite imagery, as well as through an objective algorithm applied to hourly, 20km Rapid Update Cycle model analyses. Vortices arising within organized convection, called mesoscale convective vortices (MCVs), as well as ones forming in the absence of convection (dry vortices) were identified over the central US during an active period from 1-10 June 2009. Additionally, MCVs that were responsible for triggering subsequent convection, termed secondary convection, were identified. The results from the subjective and objective methods were compared and vortex characteristics, such as their duration, were analyzed. The objective algorithm detected more vortices than expected, as well as an approximately equal distribution of dry and convective vortices. Approximately two-thirds of the MCVs detected by the algorithm were also detectable by the subjective, visual method. MCVs that triggered new convection accounted for less than half of all cases, while in general MCVs lasted longer than dry vortices. While extension of this research is necessary in order to apply to a more broad range of MCVs, these results demonstrate the potential of the methodology in identifying these vortices, which will potentially lead to a greater understanding of such systems.
Deciduous-broadleaf forest simulation accuracy in the Community Land Model v4.0
Creators: name: Perkins, Walter
name: Bonan, Gordon
name: Gonzalez, Alex
name: Jones, McArthur
name: Paulus, Matthew
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2011

Seasonal changes in leaf area index (LAI) are an important factor in determining radiative transfers, and ecosystem exchanges between the land and atmosphere components of the Community Land Model (CLM). Thus, striving for more accurate vegetation simulations will yield more realistic results from the CLM. A recent study showed a possible problem with the spring green-up in the vegetation simulation of a deciduous-broadleaf forest. This study was conducted using an older version of the CLM with an early prototype of the carbon-nitrogen (CN) biogeochemical model. The result of that study prompted an investigation into the current behavior of deciduous-broadleaf forests in the CLM v4.0. To investigate current behavior, we employed a multi-grid-cell, multi-year, monthly average of a prognostic and prescribed vegetation simulations, and also used averages of observed data from AmeriFlux tower sites. LAI values between the two simulations and observations were compared, and then effects on latent heat flux (LH), sensible heat flux (SH), gross primary production (GPP), and the net ecosystem exchange (NEE) were assessed. Comparisons show that although there has been an improvement in the seasonal behavior of LAI, the LAI for the simulated vegetation is biased high. The high LAI causes increases of GPP and LH, and a decrease in SH. The NEE is underestimated during summer and overestimated during winter, but this does not appear to be caused by the high LAI values. These biases highlight the need for further study and improvement of CN model, and CLM accuracy.
Coherent Tunneling in Exciton Condensates of Bilayer Quantum Hall Systems
Creators: name: Park, K.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Due to strong interlayer correlations, the bilayer quantum Hall system is a single coherent system as a whole rather than a weakly-coupled set of two independent systems, which makes conventional tunnelling theories inapplicable. In this paper, we develop a theory of interlayer tunnelling in coherent exciton condensates of bilayer quantum Hall systems at total filling factor $ν_T=1$. One of the most important consequences of our theory is that the zero-bias interlayer tunnelling conductance peak is strongly enhanced, but fundamentally finite even at zero temperature. We explicitly compute the height of the conductance peak as a function of interlayer distance, which is compared with experiment. It is emphasized that the interlayer distance dependence of the conductance peak is one of the key properties distinguishing between the spontaneous coherence due to many-body effects of the Coulomb interaction and the induced coherence due to the single-particle tunnelling gap. It is also emphasized that, though the strongly enhanced tunnelling conductance originates from the interlayer phase coherence, it is not the usual Josephson effect. We propose an experimental setup for the true Josephson effect in couterflowing current measurements for a coupled set of two bilayer quantum Hall systems, which is a more precise analogy with the real Josephson effect in superconductivity.
description: 10 pages, 8 figures, Final version published in Phys. Rev. B
Neumann, Burkhard: Ursprung und Sendung der Kirche ...
Creators: name: Mähling, Patrik
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 61 Nr. 3 (2012): Ökumenische Rundschau, Band 61, Heft 3
A residential/industrial mixed use facility in Vancouvers’ Cedar Cottage district for a sustainable re-integration of life and labour
Creators: name: Thomson, John Walter
Publisher: name: University of British Columbia
Year: 2009

description: This project developed around the idea that many of our current unsustainable building practices are predicated on ideas of control that are unnecessary. The list of control mechanisms is extensive, these mechanisms are used, to determine privacy and security, to avoid having to adjust to the activities of others (freedom), and to eliminate the variations of weather and climate. Many of these devices masquerade as provision of comfort, but have lead to an alienation from both the physical and social realms. This project develops an exterior courtyard/loading bay area where people must engage and negotiate their needs and desires in a complex world of differing objectives. This world is outside of the prescribed and ordered world of the current zoning practice. It is a space that is small enough for the individuals' voice too be heard, and because the space is so essential to all users—everyone must participate in (and influence) the negotiation of how the space would be used. Many historically public activities such as laundry and bathing are returned to the public realm to aid in resource conservation and to develop social contacts. In turn, loading the courtyard with diverse activities, addresses the issue of activating such spaces without invoking the consumerism that the typical retail solution suggests. Exterior circulation extends the space of the courtyard to every entry and avoids sterile and alien corridors and stairwells. These circulation nodes are enriched with planters to embrace the seasonal and biological cycles, and also provide areas of social contact. Private roof top gardens and greenhouses to provide a counter-point to the extensive public spaces. In addition, the development of this space offers opportunities for food production, and a variety of solar energy strategies.
Extended Load Flexibility of Utility-Scale P2H Plants: Optimal Production Scheduling Considering Dynamic Thermal and HTO Impurity Effects
Creators: name: Qiu, Yiwei
name: Zhou, Buxiang
name: Zang, Tianlei
name: Zhou, Yi
name: Chen, Shi
name: Qi, Ruomei
name: Li, Jiarong
name: Lin, Jin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the conversion toward a clear and sustainable energy system, the flexibility of power-to-hydrogen (P2H) production enables the admittance of volatile renewable energies on a utility scale and provides the connected electrical power system with ancillary services. To extend the load flexibility and thus improve the profitability of green hydrogen production, this paper presents an optimal production scheduling approach for utility-scale P2H plants composed of multiple alkaline electrolyzers. Unlike existing works, this work discards the conservative constant steady-state constraints and first leverages the dynamic thermal and hydrogen-to-oxygen (HTO) impurity crossover processes of electrolyzers. Doing this optimizes their effects on the loading range and energy conversion efficiency, therefore improving the load flexibility of P2H production. The proposed multiphysics-aware scheduling model is formulated as mixed-integer linear programming (MILP). It coordinates the electrolyzers' operation state transitions and load allocation subject to comprehensive thermodynamic and mass transfer constraints. A decomposition-based solution method, SDM-GS-ALM, is followingly adopted to address the scalability issue for scheduling large-scale P2H plants composed of tens of electrolyzers. With an experiment-verified dynamic electrolyzer model, case studies up to 22 electrolyzers show that the proposed method remarkably improves the hydrogen output and profit of P2H production powered by either solar or wind energy compared to the existing scheduling approach.
description: 27 pages, 16 figures
The Delaying Effect of Storage on Investment: Evidence from The Crude Oil Sector
Creators: name: Elgouacem, Assia
name: Legrand, Nicolas
name: Elgouacem, Assia
name: Legrand, Nicolas
Publisher: name: Unknown
Year: 2019
Subjects: subject: Demand and Price Analysis
subject: Investment
subject: Irreversibility
subject: Storage
subject: Commodity prices
subject: Forward curve

description: Our paper provides a theoretical framework able to represent with accuracy a consistent relationship between fixed capital investment, storage and the term structure of prices in a storable commodity market. It aims at understanding the interaction of storage capacity with irreversible investment decisions in mediating investment and commodity price dynamics. The results show that the presence of storage, while smoothing the spot price tends also to channel volatility into the future, thereby raising the options value of waiting and eventually delaying and making lumpier the investment in fixed capital. The time-varying expected price volatility related to the inventory levels is a new channel we identify to show why irreversible investment decisions in a storable commodity market capture more accurately both price and investment dynamics observed in the data as compared to an irreversible investment setting without storage capacity.
Finite Temperature Auxiliary Field Quantum Monte Carlo in the Canonical Ensemble
Creators: name: Shen, Tong
name: Liu, Yuan
name: Yu, Yang
name: Rubenstein, Brenda
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Finite temperature auxiliary field-based Quantum Monte Carlo methods, including Determinant Quantum Monte Carlo (DQMC) and Auxiliary Field Quantum Monte Carlo (AFQMC), have historically assumed pivotal roles in the investigation of the finite temperature phase diagrams of a wide variety of multidimensional lattice models and materials. Despite their utility, however, these techniques are typically formulated in the grand canonical ensemble, which makes them difficult to apply to condensates like superfluids and difficult to benchmark against alternative methods that are formulated in the canonical ensemble. Working in the grand canonical ensemble is furthermore accompanied by the increased overhead associated with having to determine the chemical potentials that produce desired fillings. Given this backdrop, in this work, we present a new recursive approach for performing AFQMC simulations in the canonical ensemble that does not require knowledge of chemical potentials. To derive this approach, we exploit the convenient fact that AFQMC solves the many-body problem by decoupling many-body propagators into integrals over one-body problems to which non-interacting theories can be applied. We benchmark the accuracy of our technique on illustrative Bose and Fermi Hubbard models and demonstrate that it can converge more quickly to the ground state than grand canonical AFQMC simulations. We believe that our novel use of HS-transformed operators to implement algorithms originally derived for non-interacting systems will motivate the development of a variety of other methods and anticipate that our technique will enable direct performance comparisons against other many-body approaches formulated in the canonical ensemble.
description: 15 pages, 4 figures
Multiwavelength power-spectrum analysis of NGC 5548
Creators: name: Panagiotou, Christos
name: Papadakis, Iossif
name: Kammoun, Elias
name: Dovčiak, Michal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: NGC 5548 was recently monitored intensively from NIR to X-rays as part of the STORM campaign. Its disc emission was found to lag behind the observed X-rays, while the measured time lag was increasing with wavelength. These results are consistent with the assumption that short term variability in AGN emission is driven by the X-ray illumination of the accretion disc. In this work, we studied the power spectrum of UV/optical and X-ray emission of NGC 5548, using the data of the STORM campaign as well as previous Swift data, in order to investigate the relation between the UV/optical and X-ray variability and to examine its consistency with the above picture. We demonstrate that even the power spectrum results are compatible with a standard disc being illuminated by X-rays, with low accretion rates, but the details are not entirely consistent with the results from the modelling of the "τ vs λ" relation. The differences indicate that the inner disc might be covered by a "warm corona" which does not allow the detection of UV/optical emission from the inner disc. Finally, we found strong evidence that the UV emission of NGC 5548 is not stationary.
description: 11 pages, 7 figures, in press by MNRAS
Spillover Algorithm: A Decentralized Coordination Approach for Multi-Robot Production Planning in Open Shared Factories
Creators: name: Lujak, Marin
name: Fernández, Alberto
name: Onaindia, Eva
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Discrete Mathematics (cs.DM)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Open and shared manufacturing factories typically dispose of a limited number of robots that should be properly allocated to tasks in time and space for an effective and efficient system performance. In particular, we deal with the dynamic capacitated production planning problem with sequence independent setup costs where quantities of products to manufacture and location of robots need to be determined at consecutive periods within a given time horizon and products can be anticipated or backordered related to the demand period. We consider a decentralized multi-agent variant of this problem in an open factory setting with multiple owners of robots as well as different owners of the items to be produced, both considered self-interested and individually rational. Existing solution approaches to the classic constrained lot-sizing problem are centralized exact methods that require sharing of global knowledge of all the participants' private and sensitive information and are not applicable in the described multi-agent context. Therefore, we propose a computationally efficient decentralized approach based on the spillover effect that solves this NP-hard problem by distributing decisions in an intrinsically decentralized multi-agent system environment while protecting private and sensitive information. To the best of our knowledge, this is the first decentralized algorithm for the solution of the studied problem in intrinsically decentralized environments where production resources and/or products are owned by multiple stakeholders with possibly conflicting objectives. To show its efficiency, the performance of the Spillover Algorithm is benchmarked against state-of-the-art commercial solver CPLEX 12.8.
How to Compliment a Human -- Designing Affective and Well-being Promoting Conversational Things
Creators: name: Aslan, Ilhan
name: Neu, Dominik
name: Neupert, Daniela
name: Grafberger, Stefan
name: Weise, Nico
name: Pfeil, Pascal
name: Kuschewski, Maximilian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: With today's technologies it seems easier than ever to augment everyday things with the ability to perceive their environment and to talk to users. Considering conversational user interfaces, tremendous progress has already been made in designing and evaluating task oriented conversational interfaces, such as voice assistants for ordering food, booking a flight etc. However, it is still very challenging to design smart things that can have with their users an informal conversation and emotional exchange, which requires the smart thing to master the usage of social everyday utterances, using irony and sarcasm, delivering good compliments, etc. In this paper, we focus on the experience design of compliments and the Complimenting Mirror design. The paper reports in detail on three phases of a human-centered design process including a Wizard of Oz study in the lab with 24 participants to explore and identify the effect of different compliment types on user experiences and a consequent field study with 105 users in an architecture museum with a fully functional installation of the Complimenting Mirror. In our analyses we argue why and how a "smart" mirror should compliment users and provide a theorization applicable for affective interaction design with things in more general. We focus on subjective user feedback including user concerns and prepositions of receiving compliments from a thing and on observations of real user behavior in the field i.e. transitions of bodily affective expressions comparing affective user states before, during, and after compliment delivery. Our research shows that compliment design matters significantly and using the right type of compliments in our final design in the field test, we succeed in achieving reactive expressions of positive emotions, "sincere" smiles and laughter, even from the seemingly sternest users.
description: 28 pages and about 10 figures, journal format for a future submission
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 5 (118)]
Creators: name: Mafietus Cagamostus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1367
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Mafietus Cagamostus, Sohn des verstorbenen Oto, aus Lodi, nun wohnhaft im castrum von Casalpusterlengo, verpachtet an Andrius de Lapusterla, Sohn des verstorbenen Paulus, wohnhaft ebendort, und seine Mutter Catelina, Witwe des Paulus, Land in Casalpusterlengo.
Experimental Investigation of Discrete Multitone Transmission in the Presence of Optical Noise and Chromatic Dispersion
Creators: name: Dochhan, Annika
name: Nadal, Laia
name: Griesser, Helmut
name: Eiselt, Michael
name: Moreolo, Michela Svaluto
name: Elbers, Jörg-Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Enabled by channel adaptive bit and power loading, we experimentally demonstrate discrete multitone transmission at 56Gb/s with simple intensity modulation and direct detection and achieve 50 km reach in the 1.55um window.
description: The results were obtained in the framework of the SASER-ADVAntage-NET project, partly funded by the German ministry of education and research (BMBF) under contract 16BP12400, the FP7 EU-Japan project STRAUSS (GA 608528), and the project FARO (TEC2012-38119), the FPI research scholarship grants BES-2010-031072 and EEBB-I-13-06102 funded by the Spanish MINECO
Regularized coupling multiscale method for thermomechanical coupled problems
Creators: name: Guan, Xiaofei
name: Jiang, Lijian
name: Wang, Yajun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N99, 65N30, 34E13

description: The coupling effects in multiphysics processes are often neglected in designing multiscale methods. The coupling may be described by a non-positive definite operator, which in turn brings significant challenges in multiscale simulations. In the paper, we develop a regularized coupling multiscale method based on the generalized multiscale finite element method (GMsFEM) to solve coupled thermomechanical problems, and it is referred to as the coupling generalized multiscale finite element method (CGMsFEM). The method consists of defining the coupling multiscale basis functions through local regularized coupling spectral problems in each coarse-grid block, which can be implemented by a novel design of two relaxation parameters. Compared to the standard GMsFEM, the proposed method can not only accurately capture the multiscale coupling correlation effects of multiphysics problems but also greatly improve computational efficiency with fewer multiscale basis functions. In addition, the convergence analysis is also established, and the optimal error estimates are derived, where the upper bound of errors is independent of the magnitude of the relaxation coefficient. Several numerical examples for periodic, random microstructure, and random material coefficients are presented to validate the theoretical analysis. The numerical results show that the CGMsFEM shows better robustness and efficiency than uncoupled GMsFEM.
description: 26 pages
One MEMS Design Tool with Maximal Six Design Flows
Creators: name: Chang, H.
name: Xu, J.
name: Xie, J.
name: Zhang, Ch.
name: Yan, Z.
name: Yuan, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: This paper presents one MEMS design tool with total six design flows, which makes it possible that the MEMS designers are able to choose the most suitable design flow for their specific devices. The design tool is divided into three levels and interconnected by six interfaces. The three levels are lumped-element model based system level, finite element analysis based device level and process level, which covers nearly all modeling and simulation functions for MEMS design. The six interfaces are proposed to automatically transmit the design data between every two levels, thus the maximal six design flows could be realized. The interfaces take the netlist, solid model and layout as the data inlet and outlet for the system, device and process level respectively. The realization of these interfaces are presented and verified by design examples, which also proves that the enough flexibility in the design flow can really increase the design efficiency.
description: Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/EDA-Publishing)
21-cm Background Anisotropies Can Discern Primordial Non-Gaussianity
Creators: name: Cooray, Asantha
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The non-Gaussianity of initial perturbations provides information on the mechanism that generated primordial density fluctuations. The expected non-Gaussianity for slow-roll inflationary models is well below the ultimate detection level with cosmic microwave background (CMB) anisotropies or large-large structure at low redshifts. We find that 21-cm background anisotropies of the low-frequency radio sky due to inhomogeneous neutral Hydrogen distribution at redshifts between 30 and 100 captures information on primordial non-Gaussianity better than any other cosmological probe. An all-sky 21-cm experiment over the frequency range from 14 MHz to 40 MHz using a bandwidth of 1 MHz and with angular information out to a multipole of 10^5 can limit the primordial non-Gaussianity parameter f_nl < 0.01. The 21-cm background should eventually reveal the non-Gaussianity associated with single field slow-roll inflation.
description: 4 pages, 1 figure; accepted version in press with PRL. Revised version shortens the title and correctly describes the connection between f_nl and the slow-roll inflationary prediction
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 5 (143)]
Creators: name: Otolinus Cagamostis
name: Arichus Galianus
name: Basarinus Galianus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1369
Subjects: subject: Sonstige weltliche Aussteller
subject: Tauschurkunde
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Otolinus, genannt Pasarinus de Cagamostis, Sohn des verstorbenen Mafietus, wohnhaft in Casalpusterlengo, auf der einen und Arichus Galianus, Sohn des verstorbenen Baxianus, sowie Basaninus Galianus, Sohn des Aricus, aus Pavia und weitere genannte Personen auf der anderen Seite nehmen einen Gütertausch vor.
Field dependence of the magnetic spectrum in anisotropic and Dzyaloshinskii-Moriya antiferromagnets: II. Raman spectroscopy
Creators: name: Benfatto, L.
name: Neto, M. B. Silva
name: Gozar, A.
name: Dennis, B. S.
name: Blumberg, G.
name: Miller, L. L.
name: Komiya, Seiki
name: Ando, Yoichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We compare the theoretical predictions of the previous article [L. Benfatto and M. B. Silva Neto, cond-mat/0602419], with Raman spectroscopy experiments in Sr(2)CuO(2)Cl(2) and untwinned La(2)CuO(4) single crystals. We construct the magnetic point group for the magnetically ordered phase of the two compounds, Sr(2)CuO(2)Cl(2) and La(2)CuO(4), and we classify all the Raman active one-magnon excitations according to the irreducible co-representations for the associated magnetic point group. We then measure the evolution of the one-magnon Raman energies and intensities for low and moderate magnetic fields along the three crystallographic directions. In the case of La(2)CuO(4), we demonstrate that from the jump of the Dzyaloshinskii-Moriya gap at the critical magnetic field H_c ~ 6.6 T for the weak-ferromagnetic transition one can determine the value of the interlayer coupling J_\perp/J ~ 3.2 x 10^-5. We furthermore determine the components of the anisotropic gyromagnetic tensor as g_s^a=2.0, g_s^b=2.08, and the upper bound g_s^c=2.65. For the case of Sr(2)CuO(2)Cl(2), we compare the Raman data obtained in an in-plane magnetic field with previous magnon-gap measurements done by ESR. Using the very low magnon gap estimated by ESR (~ 0.05 meV), the data for the one-magnon Raman energies agree reasonably well with the theoretical predictions for the case of a transverse field (only hardening of the gap).
description: 18 pages, 14 figures, final version. Part I can be found at cond-mat/0602419
Hilpert, Konrad (Hg.): Zukunftshorizonte katholischer Sexualethik
Creators: name: Müllner, Ilse
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 61 Nr. 3 (2012): Ökumenische Rundschau, Band 61, Heft 3
Studies of Polymer Deformation and Recovery in Hot Embossing
Creators: name: Shan, X. C.
name: Liu, Y. C.
name: Lu, H. J.
name: Wang, Z. F.
name: Lam, Y. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: In large area micro hot embossing, the process temperature plays a critical role to both the local fidelity of microstructure formation and global uniformity. The significance of low temperature hot embossing is to improve global flatness of embossed devices. This paper reports on experimental studies of polymer deformation and relaxation in micro embossing when the process temperatures are below or near its glass transition temperature (Tg). In this investigation, an indentation system and a micro embosser were used to investigate the relationship of microstructure formation versus process temperature and load pressure. The depth of indentation was controlled and the load force at a certain indentation depth was measured. Experiments were carried out using 1 mm thick PMMA films with the process temperature ranging from Tg-55 degrees C to Tg +20 degrees C. The embossed structures included a single micro cavity and groups of micro cavity arrays. It was found that at temperature of Tg-55 degrees C, elastic deformation dominated the formation of microstructures and significant relaxation happened after embossing. From Tg-20 degrees C to Tg, plastic deformation dominated polymer deformation, and permanent cavities could be formed on PMMA substrates without obvious relaxation. However, the formation of protrusive structures as micro pillars was not complete since there was little polymer flow. With an increase in process temperature, microstructure could be formed under lower loading pressure. Considering the fidelity of a single microstructure and global flatness of embossed substrates, micro hot embossing at a low process temperature, but with good fidelity, should be preferred.
description: Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/EDA-Publishing)
Free Energy of a Knotted Polymer Confined to Narrow Cylindrical and Conical Channels
Creators: name: Polson, James M.
name: Hastie, Cameron G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Monte Carlo simulations are used to study the conformational behavior of a semiflexible polymer confined to cylindrical and conical channels. The channels are sufficiently narrow that the conditions for the Odijk regime are marginally satisfied. For cylindrical confinement, we examine polymers with a single knot of topology $3_1$, $4_1$, or $5_1$, as well as unknotted polymers that are capable of forming S-loops. We measure the variation of the free energy $F$ with the end-to-end polymer extension length $X$ and examine the effect of varying the polymer topology, persistence length $P$ and cylinder diameter $D$ on the free energy functions. Similarly, we characterize the behavior of the knot span along the channel. We find that increasing the knot complexity increases the typical size of the knot. In the regime of low $X$, where the knot/S-loop size is large, the conformational behavior is independent of polymer topology. In addition, the scaling properties of the free energy and knot span are in agreement with predictions from a theoretical model constructed using known properties of interacting polymers in the Odijk regime. We also examine the variation of $F$ with position of a knot in conical channels for various values of the cone angle $α$. The free energy decreases as the knot moves in a direction where the cone widens, and it also decreases with increasing $α$ and with increasing knot complexity. The behavior is in agreement with predictions from a theoretical model in which the dominant contribution to the change in $F$ is the change in the size of the hairpins as the knot moves to the wider region of the channel.
description: 15 pages, 11 figures, supplemental information
A study of neutron-deuteron scattering in configuration space
Creators: name: Suslov, V. M.
name: Braun, M. A.
name: Filikhin, I.
name: Vlahovic, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A new computational method for solving the configuration-space Faddeev equations for the breakup scattering problem has been applied to nd scattering both below and above the two-body threshold.
description: 4 pages, 3 Postscript figures, uses espcrc1.sty Talk at the 18th International IUPAP Conference on Few-Body Problems in Physics, Aug. 21-26, 2006, Santos, Brazil