cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of Drying Condition on Shatavari (Asparagus Racemosus Willd) Root Quality and Energy Consumption
Creators: name: Phattharanan Thiangma
Publisher: name: Faculty of Engineering Mahasasakham University
Year: 2022
Subjects: Shatavari
Drying
Microwave drying
Phenolic content

description: Engineering Access, 8, 2, 330-335
Incorporating producer opinions into a SWOT analysis of the U.S. tart cherry industry
Creators: name: Lagoudakis, Angelos
name: McKendree, Melissa G.S.
name: Malone, Trey
name: Caputo, Vincenzina
name: Lagoudakis, Angelos
name: McKendree, Melissa G.S.
name: Malone, Trey
name: Caputo, Vincenzina
Publisher: name: Unknown
Year: 2020
Subjects: subject: Crop Production/Industries
subject: SWOT analysis
subject: tart cherries
subject: supply chain analysis

description: While SWOT analysis is common in strategic management, the academic literature rarely incorporates responses and opinions held by those within the industry of interest. This article contributes to the agribusiness literature by identifying the strengths, weaknesses, opportunities, and threats for the tart cherry industry and surveying stakeholders to integrate their feedback into the analysis. Results indicate that producer views on the strengths, weakness, opportunities and threats of the tart cherry industry are heterogeneous. Results also suggest that growers perceive consumer interest towards nutritional/healthy and natural food products as the main opportunity for the tart cherry industry, while imports are considered the biggest threat.
Coherent phonon induced optical modulation in semiconductors at terahertz frequencies
Creators: name: Hase, Muneaki
name: Katsuragawa, Masayuki
name: Constantinescu, Anca Monia
name: Petek, Hrvoje
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The coherent modulation of electronic and vibrational nonlinearities in atoms and molecular gases by intense few-cycle pulses has been used for high-harmonic generation in the soft X-ray and attosecond regime, as well as for Raman frequency combs that span multiple octaves from the Terahertz to Petahertz frequency regions. In principle, similar high-order nonlinear processes can be excited efficiently in solids and liquids on account of their high nonlinear polarizability densities. In this paper, we demonstrate the phononic modulation of the optical index of Si and GaAs for excitation and probing near their direct band gaps, respectively at ~3.4 eV and ~3.0 eV. The large amplitude coherent longitudinal optical polarization due to the excitation of longitudinal optical (LO) phonon of Si (001) and LO phonon-plasmon coupled modes in GaAs (001) excited by 10-fs laser pulses induces effective amplitude and phase modulation of the reflected probe light. The combined action of the amplitude and phase modulation in Si and GaAs generates phonon frequency combs with more than 100 and 60 THz bandwidth, respectively.
description: 15 pages, 11 figures
Reacceleration of Galactic Cosmic Rays Beyond the Knee at the Termination Shock of a Cosmic-Ray-Driven Galactic Wind
Creators: name: Mukhopadhyay, Payel
name: Peretti, Enrico
name: Globus, Noemie
name: Simeon, Paul
name: Blandford, Roger
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The origin of cosmic rays above the knee in the spectrum is an unsolved problem. We present a wind model in which interstellar gas flows along a non-rotating, expanding flux tube with a changing speed and cross-sectional area. Cosmic rays from Galactic sources, such as supernova remnants, which are coupled to the plasma via Alfvén waves, provide the main pressure source for driving this outflow. These cosmic rays are then subject to diffusive shock reacceleration at the Galactic wind termination shock, which is located at a distance $\sim200\,{\rm kpc}$. Some of the highest-energy reaccelerated particles propagate upstream against the wind and can contribute to the PeV-EeV range of the spectrum. We analyze the conditions under which efficient reacceleration can occur and find that rigidities $\sim$ 10-40 PV can be obtained and that the termination shock may account for half of the proton spectrum measured in IceCube/IceTop experiment. The highest-energy particles that escape downstream from our termination shock, and similar shocks surrounding most galaxies, can be further accelerated by intergalactic shock fronts.
E_n Genera
Creators: name: Chadwick, Steven Greg
name: Mandell, Michael A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: Primary 55N22, Secondary 55P43

description: Let R be an E_2 ring spectrum with zero odd dimensional homotopy groups. Every map of ring spectra MU to R is represented by a map of E_2 ring spectra. If 2 is invertible in pi_0(R), then every map of ring spectra MSO to R is represented by a map of E_2 ring spectra.
Predictive Reduced Order Modeling of Chaotic Multi-scale Problems Using Adaptively Sampled Projections
Creators: name: Huang, Cheng
name: Duraisamy, Karthik
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: An adaptive projection-based reduced-order model (ROM) formulation is presented for model-order reduction of problems featuring chaotic and convection-dominant physics. An efficient method is formulated to adapt the basis at every time-step of the on-line execution to account for the unresolved dynamics. The adaptive ROM is formulated in a Least-Squares setting using a variable transformation to promote stability and robustness. An efficient strategy is developed to incorporate non-local information in the basis adaptation, significantly enhancing the predictive capabilities of the resulting ROMs. A detailed analysis of the computational complexity is presented, and validated. The adaptive ROM formulation is shown to require negligible offline training and naturally enables both future-state and parametric predictions. The formulation is evaluated on representative reacting flow benchmark problems, demonstrating that the ROMs are capable of providing efficient and accurate predictions including those involving significant changes in dynamics due to parametric variations, and transient phenomena. A key contribution of this work is the development and demonstration of a comprehensive ROM formulation that targets predictive capability in chaotic, multi-scale, and transport-dominated problems.
Ptolemaic queens: power wielders or power hungry? A study of Cleopatras I, II and III
Creators: name: Yeo, Katherine K. H.
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: The concept of queenship has never been easy to define. It is not, as many might assume, the female equivalent of kingship. The inequalities between genders means that acceptance of a queen as ruler does not necessarily mean acceptance equal to that of a king. In Ptolemaic Egypt it appears that the queens were mere placeholders, their role determined by their relationship to the king, or soon-to-be-king. This assumes that they were not considered rulers in their own right. It also assumes that by sheer proximity and importance to the king, queens might also wield some degree of influence and power. But what did this look like? Ptolemaic propaganda generated grand titles and ornate temple reliefs, but these are not, of themselves, evidence of material or personal power and influence; and we should not mistake the appearance of power and authority for actual power and authority. Ancient sources have typically stereotyped women who wielded power as ambitious, unscrupulous manipulators, and modern scholarship has been distorted by an inclination to accept these assumptions. This has resulted in a limited perspective and understanding of women in power. The treatment and depiction of Cleopatras I, II, and III in ancient sources and modern historiography is no exception; they are castigated for desiring or acquiring power. However, an assessment of non-literary evidence suggests that sometimes, it is simply the perception of power, rather than actual possession or exercise of power. Therefore, it is imperative to consider all the available evidence, both literary and non-literary, pertaining to the study of Cleopatras I, II, and III in order to better recognise the difference between actual possession of power and the perception of power; and to gain a deeper and more nuanced understanding of the relationship between gender and power.
Spin-1 Hopfield model under a random field
Creators: name: Morais, C. V.
name: Lazo, M. J.
name: Zimmer, F. M.
name: Krebs, P. R.
name: Magalhaes, S. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The goal of the present work is to investigate the role of trivial disorder and nontrivial disorder in the three-state Hopfield model under a Gaussian random field. In order to control the nontrivial disorder, the Hebb interaction is used. This provides a way to control the system frustration by means of the parameter a=p/N, varying from trivial randomness to a highly frustrated regime, in the thermodynamic limit. We performed the thermodynamic analysis using the one-step replica-symmetry-breaking mean field theory to obtain the order parameters and phase diagrams for several strengths of a, the anisotropy constant, and the random field.
Using [Ne V]/[Ne III] to Understand the Nature of Extreme-Ionization Galaxies
Creators: name: Cleri, Nikko J.
name: Olivier, Grace M.
name: Hutchison, Taylor A.
name: Papovich, Casey
name: Trump, Jonathan R.
name: Amorin, Ricardo O.
name: Backhaus, Bren E.
name: Berg, Danielle A.
name: Fernandez, Vital
name: Finkelstein, Steven L.
name: Fujimoto, Seiji
name: Hirschmann, Michaela
name: Kartaltepe, Jeyhan S.
name: Kocevski, Dale D.
name: Simons, Raymond C.
name: Wilkins, Stephen M.
name: Yung, L. Y. Aaron
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Spectroscopic studies of extreme-ionization galaxies (EIGs) are critical to our understanding of exotic systems throughout cosmic time. These EIGs exhibit spectral features requiring >54.42 eV photons: the energy needed to fully ionize helium into He2+ and emit He II recombination lines. They are likely key contributors to reionization, and they can also probe exotic stellar populations or accretion onto massive black holes. To facilitate the use of EIGs as probes of high ionization, we focus on ratios constructed from strong rest-frame UV/optical emission lines, specifically [O III] 5008, H-beta, [Ne III] 3870, [O II] 3727,3729, and [Ne V] 3427. These lines probe the relative intensity at energies of 35.12, 13.62, 40.96, 13.62 eV, and 97.12, respectively, covering a wider range of ionization than traced by other common rest-frame UV/optical techniques. We use ratios of these lines ([Ne V]/[Ne III] = Ne53 and [Ne III]/[O II]), which are closely separated in wavelength, and mitigates effects of dust attenuation and uncertainties in flux calibration. We make predictions from photoionization models constructed from Cloudy that use a broad range of stellar populations and black hole accretion models to explore the sensitivity of these line ratios to changes in the ionizing spectrum. We compare our models to observations from the Hubble Space Telescope and James Webb Space Telescope of galaxies with strong high-ionization emission lines at z ~ 0, z ~ 2, and z ~ 7. We show that the Ne53 ratio can separate galaxies with ionization from 'normal' stellar populations from those with AGN and even 'exotic' Population III models. We introduce new selection methods to identify galaxies with photoionization driven by Population III stars or intermediate-mass black hole accretion disks that could be identified in upcoming high-redshift spectroscopic surveys.
description: 16 pages, 5 figures, 1 table. Accepted in ApJ
Weak Gravitational Lensing Systematics from Image Combination
Creators: name: Shapiro, Charles
name: Rowe, Barnaby
name: Goodsall, Timothy
name: Hirata, Christopher M.
name: Fucik, Jason
name: Rhodes, Jason
name: Seshadri, Suresh
name: Smith, Roger
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Extremely accurate shape measurements of galaxy images are needed to probe dark energy properties with weak gravitational lensing surveys. To increase survey area with a fixed observing time and pixel count, images from surveys such as the Wide Field Infrared Survey Telescope (WFIRST) or Euclid will necessarily be undersampled and therefore distorted by aliasing. Oversampled, unaliased images can be obtained by combining multiple, dithered exposures of the same source with a suitable reconstruction algorithm. Any such reconstruction must minimally distort the reconstructed images for weak lensing analyses to be unbiased. In this paper, we use the IMage COMbination (IMCOM) algorithm of Rowe, Hirata, and Rhodes to investigate the effect of image combination on shape measurements (size and ellipticity). We simulate dithered images of sources with varying amounts of ellipticity and undersampling, reconstruct oversampled output images from them using IMCOM, and measure shape distortions in the output. Our simulations show that IMCOM creates no significant distortions when the relative offsets between dithered images are precisely known. Distortions increase with the uncertainty in those offsets but become problematic only with relatively poor astrometric precision. E.g. for images similar to those from the Astrophysics Focused Telescope Asset (AFTA) implementation of WFIRST, combining eight undersampled images (sampling ratio Q=1) with highly pessimistic uncertainty in astrometric registration (σ_d~10^{-3} pixels) yields an RMS shear error of O(10^{-4}). Our analysis pipeline is adapted from that of the Precision Projector Laboratory -- a joint project between NASA Jet Propulsion Laboratory and Caltech which characterizes image sensors using laboratory emulations of astronomical data.
description: 18 pages (screen-readable landscape 2-column), 7 figures, to appear in PASP
Vector Field Models for Nematic Disclinations
Creators: name: Acharya, Amit
name: Fonseca, Irene
name: Ganedi, Likhit
name: Stinson, Kerrek
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper, a model for defects that was introduced in \cite{ZANV} is studied. In the literature, the setting of most models for defects is the function space SBV (special bounded variation functions) (see, e.g., \cite{ContiGarroni, GoldmanSerfaty}). However, this model regularizes the director field to be in a Sobolev space by adding a second field to incorporate the defect. A relaxation result in the case of fixed parameters is proven along with some partial compactness results.
Hot coronal loops associated with umbral brightenings
Creators: name: Alissandrakis, C. E.
name: Patsourakos, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyzed AIA/SDO high-cadence images in all bands, HMI/SDO data, soft X-ray images from SXI/GOES-15, and Halpha images from the GONG network. We detected umbral brightenings that were visible in all AIA bands as well as in Halpha. Moreover, we identified hot coronal loops that connected the brightenings with nearby regions of opposite magnetic polarity. These loops were initially visible in the 94 A band, subsequently in the 335 A band, and in one case in the 211 A band. A differential emission measure analysis revealed plasma with an average temperature of about 6.5x10^6 K. This behavior suggests cooling of impulsively heated loops.
description: A&A, 2013, in press
Paraxial diffusion-field retrieval
Creators: name: Paganin, David M.
name: Pelliccia, Daniele
name: Morgan, Kaye S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Unresolved spatially-random microstructure, in an illuminated sample, can lead to position-dependent blur when an image of that sample is formed. For a small propagation distance, between the exit surface of the sample and the entrance surface of a position-sensitive detector, the paraxial approximation implies that the blurring influence of the sample may be modeled using an anomalous-diffusion field. This diffusion field may have a scalar or tensor character, depending on whether the random microstructure has an autocorrelation function that is rotationally isotropic or anisotropic, respectively. Partial differential equations are written down and then solved, in a closed-form manner, for several variants of the inverse problem of diffusion-field retrieval given suitable intensity images. Both uniform-illumination and structured-illumination schemes are considered. Links are made, between the recovered diffusion field and certain statistical properties of the unresolved microstructure. The developed theory -- which may be viewed as a crudely parallel form of small-angle scattering under the Guinier approximation -- is applicable to a range of paraxial radiation and matter fields, such as visible light, x rays, neutrons, and electrons.
description: Numerous very minor corrections and clarifications throughout, compared to the previous version
Non-Markovianity in the time evolution of open quantum systems assessed by means of quantum state distance
Creators: name: Mouloudakis, G.
name: Stergou, I.
name: Lambropoulos, P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a quantitative evaluation of non-Markovianity (NM) for an XX chain of interacting qubits with one end coupled to a reservoir. The NM of several non-Markovian spectral densities is assessed in terms of various quantum state distance (QSD) measures. Our approach is based on the construction of the density matrix of the open chain, without the necessity of a master equation. For the quantification of NM we calculate the dynamics of the QSD measures between the Markovian-damped and various types of non-Markovian-damped cases. Since in the literature several QSD measures, appear in forms that imply trace preserving density matrices, we introduced appropriate modifications so as to render them applicable to the case of decaying traces. The results produce remarkable consistency between the various QSD measures. They also reveal a subtle and potentially useful interplay between qubit-qubit interaction and non-Markovian damping. Our calculations have also uncovered a surprisingly dramatic slowing-down of dissipation by the squared Lorentzian reservoir.
description: 14 pages, 5 figures
Trans* and gender diverse players, avatars, and the performance of gender
Creators: name: Whitehouse, Kayson
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Trans* and Gender Diverse (TGD) players are a minority who are uniquely positioned to take advantage of the virtual, anonymous, and invisible nature of videogames to overcome offline obstacles. Yet little research has investigated these players, and most works exclude TGD players due to heteronormative assumptions. This thesis draws on queer game studies to investigate TGD players’ use of videogames. Forty TGD participants were interviewed to gain insight into if, how and why TGD player’s videogaming related to the expression or exploration of their gender-identity (GID), and any effects this has. Through phenomenological thematic analysis, it was found that the participants used videogames, particularly avatars, as method of GID expression and, to a lesser extent, exploration. Participants used avatar appearance, and supporting features, such as pronouns, and personality, in this play. The findings are framed against existing literature to reveal the heteronormative assumptions such works draw upon, particularly in research concerning player-avatar relationships, gender performances and gender-bending. The findings of this thesis have implications for future games research concerning gender, revealing that gender performances cannot necessarily be identified through external observation. This thesis encourages future works to define gender clearly, and aim to subvert heteronormative assumptions, particularly those of cisnormativity.
$μ-τ$ Symmetry, Nonzero $θ_{13}$, and CP Violation
Creators: name: Damanik, Asan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If we impose the $μ-τ$ symmetry, as a constraint into neutrino mass matrix, one find that the Jarlskog rephasing invariant: $J_{\rm CP}=0$ which implies that CP violation cannot be accommodated in the $μ-τ$ symmetry scheme. By introducing a small parameter $x$ that perturb the neutrino mass matrix with $μ-τ$ symmetry with trace of neutrino mass matrix remain constant, we can obtain $J_{CP}\neq 0$ and consequently $θ_{13}\neq 0$.
description: 3 references added, Talk given at 16th Lomonosov Conference on Elementary Particle Physics, Moscow, 22-28 August 2013
Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet
Creators: name: Gen, M.
name: Ikeda, A.
name: Aoyama, K.
name: Jeschke, H. O.
name: Ishii, Y.
name: Ishikawa, H.
name: Yajima, T.
name: Okamoto, Y.
name: Zhou, X. -G.
name: Nakamura, D.
name: Takeyama, S.
name: Kindo, K.
name: Matsuda, Y. H.
name: Kohama, Y.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The mutual coupling of spin and lattice degrees of freedom is ubiquitous in magnetic materials and potentially creates exotic magnetic states in response to the external magnetic field. Particularly, geometrically frustrated magnets serve as a fertile playground for realizing magnetic superstructure phases. Here, we observe an unconventional two-step magnetostructural transition prior to a half-magnetization plateau in a breathing pyrochlore chromium spinel by means of state-of-the-art magnetization and magnetostriction measurements in ultrahigh magnetic fields available up to 600 T. Considering a microscopic magnetoelastic theory, the intermediate-field phase can be assigned to a magnetic superstructure with a three-dimensional periodic array of 3-up-1-down and canted 2-up-2-down spin molecules. We attribute the emergence of the magnetic superstructure to a unique combination of the strong spin-lattice coupling and large breathing anisotropy.
description: 10 pages, 5 figures, SI: 15 pages, 14 figures
Phases and fluctuations in a model for asymmetric inhomogeneous fluid membranes
Creators: name: Sarkar, Niladri
name: Basu, Abhik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We propose and analyze a model for phase transitions in an inhomogeneous fluid membrane, that couples local composition with curvature nonlinearly. For asymmetric membranes, our model shows generic non-Ising behavior and the ensuing phase diagram displays either a first- or a second-order phase transition through a critical point (CP) or a tricritical point (TP), depending upon the bending modulus. It predicts generic nontrivial enhancement in fluctuations of asymmetric membranes that scales with system size in a power law fashion at the CP and TP in two dimensions, not observed in symmetric membranes. It also yields two-dimensional Ising universality class for symmetric membranes, in agreement with experimental results.
description: 9 pages, 7 figures, accepted in PRE
Revisiting Power Systems Time-domain Simulation Methods and Models
Creators: name: Lara, Jose Daniel
name: Henriquez-Auba, Rodrigo
name: Ramasubramanian, Deepak
name: Dhople, Sairaj
name: Callaway, Duncan S.
name: Sanders, Seth
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The changing nature of power systems dynamics is challenging present practices related to modeling and study of system-level dynamic behavior. While developing new techniques and models to handle the new modeling requirements, it is also critical to review some of the terminology used to describe existing simulation approaches and the embedded assumptions. This paper provides a first-principles review of the simplifications and transformation commonly used in the formulation of time-domain simulation models. It introduces a taxonomy and classification of time-domain simulation models depending on their frequency bandwidth, network representation, and software availability. Furthermore, it focuses on the fundamental aspects of averaging techniques, and model reduction approaches that result in modeling choices, and discusses the associated challenges and opportunities of applying these methods in systems with large shares of Inverter Based Resources (IBRs). The paper concludes with an illustrative simulation that compares the trajectories of an IBR-dominated system.
Multi-wavelength afterglow emission from bursts associated with magnetar flares and fast radio bursts
Creators: name: Wei, Yujia
name: Zhang, B. Theodore
name: Murase, Kohta
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Magnetars have been considered as progenitors of magnetar giant flares (MGFs) and fast radio bursts (FRBs). We present detailed studies on afterglow emissions caused by bursts that occur in their wind nebulae and surrounding baryonic ejecta. In particular, following the bursts-in-bubble model proposed by Murase, Kashiyama \& Mészáros, we analytically and numerically calculate spectra and light curves of such afterglow emission. We scan parameter space for the detectability of radio signals, and find that a burst with $\sim10^{45}~{\rm erg}$ is detectable with the Very Large Array or other next-generation radio facilities. The detection of multi-wavelength afterglow emission from MGFs and/or FRBs is of great significance for their localization and revealing their progenitors, and we estimate the number of detectable afterglow events.
description: 12 pages, 8 figures, 4 tables, accepted for publication in MNRAS
Phonon-Spectrum Narrowing Induced by Ultrafast Charge Fluctuation in an Organic Dimer Mott Insulator
Creators: name: Itoh, K.
name: Itoh, H.
name: Saito, S.
name: Hosako, I.
name: Nakamura, Y.
name: Kishida, H.
name: Yoneyama, N.
name: Sasaki, T.
name: Ishihara, S.
name: Iwai, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have observed the characteristic temperature dependence of the intermolecular phonon spectrum in the organic dimer Mott insulator kappa-(ET)2Cu2(CN)3 exhibiting a dielectric anomaly at 30 K. The anomalous spectral narrowing of the 55 cm-1 phonon peak at 30 K was analyzed in terms of motional narrowing within the framework of a stationary Gaussian process, i. e., the phonon frequency is modulated by the ultrafast charge fluctuation. The spectral narrowing occurs because the time constant of the correlation time tau_c and the amplitude of the frequency modulation delta satisfy the relation tau_c
description: 18 pages, 5 figures, accepted Phys. Rev. B
Wada Boundaries on a Hyperbolic Pair of Pants
Creators: name: Rossetto, Pedro Henrique Barboza
name: de Andrade, Vanessa Carvalho
name: Muller, Daniel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In this paper the geodesics of an open multiply connected hyperbolic manifold are presented from the dynamical system point of view. The approach is completely numerical. Similar to the closed hyperbolic case there is a zero-measure set of periodic orbits. The difference is that now, most of the geodesics escape to infinity through one of the topologically distinct channels, and initial conditions are identified to which channel the orbit escapes. The initial condition mesh reveals basins of attraction to each channel. We verified that the basin boundary points are of the Wada type by two independent methods. We have also calculated the basin entropy of the system, and verified that it depends on the opening angle of the escape channels. The manifold chosen is the pair of pants together with the leaves, so there are $3$ distinct exit channels.
Stochastic Interactions of Two Brownian Hard Spheres in the Presence of Depletants
Creators: name: Karzar-Jeddi, Mehdi
name: Tuinier, Remco
name: Taniguchi, Takashi
name: Fan, Tai-Hsi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A quantitative analysis is presented for the stochastic interactions of a pair of Brownian hard spheres in non-adsorbing polymer solutions. The hard spheres are hypothetically trapped by optical tweezers and allowed for random motion near the trapped positions. The investigation focuses on the long-time correlated Brownian motion. The mobility tensor altered by the polymer depletion effect is computed by the boundary integral method, and the corresponding random displacement is determined by the fluctuation-dissipation theorem. From our computations it follows that the presence of depletion layers around the hard spheres has a significant effect on the hydrodynamic interactions and particle dynamics as compared to pure solvent and pure polymer solution (no depletion) cases. The probability distribution functions of random walks of the two interacting hard spheres that are trapped clearly shifts due to the polymer depletion effect. The results show that the reduction of the viscosity in the depletion layers around the spheres and the entropic force due to the overlapping of depletion zones have a significant influence on the correlated Brownian interactions.
description: 30 pages, 9 figures, 1 appendix, 40 formulas inside the text, 5 formulas in appendix
Precision Control in Lattice Calculation of $x$-dependent Pion Distribution Amplitude
Creators: name: Holligan, Jack
name: Ji, Xiangdong
name: Lin, Huey-Wen
name: Su, Yushan
name: Zhang, Rui
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a new Bjorken $x$-dependence analysis of a previous lattice quantum chromodynamics data for the pion distribution amplitude from MILC configurations with three lattice spacing $a=0.06,0.09, 0.12$~fm. A leading renormalon resummation in renormalization as well as the perturbative matching kernel in the framework of large momentum expansion generates the power accuracy of the matching to the light-cone amplitude. Meanwhile, a small momentum log resummation is implemented for both the quark momentum $xP_z$ and the antiquark momentum $(1-x)P_z$ inside a meson of boost momentum $P_z$ up to 1.72 GeV along the $z$ direction, allowing us to have more accurate determination of the $x$-dependence in the middle range. Finally, we use the complementarity between the short-distance factorization and the large momentum expansion to constrain the endpoint regions $x\sim 0, 1$, thus obtaining the full-range $x$-dependence of the amplitude.
description: Update to the published version in NPB
Brunn, Frank Martin u.a. (Hrsg.): Menschenbild und Theologie
Creators: name: Hüttinger, Martin
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 14 Nr. 2 (2007): Werkstatt Schwule Theologie, Band 14, Heft 2
Multi-dimensional geometric complexity in urban transportation systems
Creators: name: Peiravian, Farideddin
name: Derrible, Sybil
Publisher: name: University of Illinois at Chicago
Year: 2022
Subjects: Uncategorized

description: Transportation networks serve as windows into the complex world of urban systems. By properly characterizing a road network, one can better understand its encompassing urban system. This study offers a geometrical approach toward capturing inherent properties of urban road networks. It offers a robust and efficient methodology toward defining and extracting three relevant indicators of road networks—area, line, and point thresholds—through measures of their grid equivalents. By applying the methodology to 50 U.S. urban systems, one can successfully observe differences between eastern versus western, coastal versus inland, and old versus young cities. Moreover, we show that many socioeconomic characteristics, as well as travel patterns, within urban systems are directly correlated with their corresponding area, line, and point thresholds.
The unusual M-dwarf Warm Jupiter TOI-1899~b: Refinement of orbital and planetary parameters
Creators: name: Lin, Andrea S. J.
name: Libby-Roberts, Jessica E.
name: Alvarado-Montes, Jaime A.
name: Cañas, Caleb I.
name: Kanodia, Shubham
name: Han, Te
name: Hebb, Leslie
name: Jensen, Eric L. N.
name: Mahadevan, Suvrath
name: Powers, Luke C.
name: Swaby, Tera N.
name: Wisniewski, John
name: Beard, Corey
name: Bender, Chad F.
name: Blake, Cullen H.
name: Cochran, William D.
name: Diddams, Scott A.
name: Frazier, Robert C.
name: Fredrick, Connor
name: Gully-Santiago, Michael
name: Halverson, Samuel
name: Logsdon, Sarah E.
name: McElwain, Michael W.
name: Morley, Caroline
name: Ninan, Joe P.
name: Rajagopal, Jayadev
name: Ramsey, Lawrence W.
name: Robertson, Paul
name: Roy, Arpita
name: Schwab, Christian
name: Stefánsson, Guðmundur
name: Stevens, Daniel J.
name: Terrien, Ryan C.
name: Wright, Jason T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: TOI-1899 b is a rare exoplanet, a temperate Warm Jupiter orbiting an M-dwarf, first discovered by Cañas et al. (2020) from a TESS single-transit event. Using new radial velocities (RVs) from the precision RV spectrographs HPF and NEID, along with additional TESS photometry and ground-based transit follow-up, we are able to derive a much more precise orbital period of $P = 29.090312_{-0.000035}^{+0.000036}$ d, along with a radius of $R_p = 0.99 \pm 0.03~R_J$. We have also improved the constraints on planet mass, $M_p = 0.67 \pm 0.04~M_J$, and eccentricity, which is consistent with a circular orbit at 2$σ$ ($e = 0.044_{-0.027}^{+0.029}$). TOI-1899 b occupies a unique region of parameter space as the coolest known ($T_{eq} \approx$ 380 K) Jovian-sized transiting planet around an M-dwarf; we show that it has great potential to provide clues regarding the formation and migration mechanisms of these rare gas giants through transmission spectroscopy with JWST as well as studies of tidal evolution.
description: 28 pages, 15 figures, 3 tables, accepted to AJ
The VLT-FLAMES Tarantula Survey - XI. A census of the hot luminous stars and their feedback in 30 Doradus
Creators: name: Doran, E. I.
name: Crowther, P. A.
name: de Koter, A.
name: Evans, C. J.
name: McEvoy, C.
name: Walborn, N. R.
name: Bastian, N.
name: Bestenlehner, J. M.
name: Grafener, G.
name: Herrero, A.
name: Kohler, K.
name: Apellaniz, J. Maiz
name: Najarro, F.
name: Puls, J.
name: Sana, H.
name: Schneider, F. R. N.
name: Taylor, W. D.
name: van Loon, J. Th.
name: Vink, J. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We compile the first comprehensive census of hot luminous stars in the 30 Doradus (30 Dor) star forming region of the LMC. The census extends to a radius of 10arcmin (150pc) from the central cluster, R136. Stars were selected photometrically and combined with the latest spectral types. 1145 candidate hot luminous stars were identified of which >700 were considered genuine early type stars that contribute to feedback. We assess the spectroscopic completeness to be 85% in outer regions (>5pc) but fall to 35% in the vicinity of R136, giving a total of 500 hot luminous stars with spectroscopy. Stellar calibrations and models were used to obtain their physical parameters before integrated values were compared to global observations and the population synthesis code, Starburst99. The 31 W-R and Of/WN stars made large contributions to the total ionising and wind luminosities of ~40% and ~50%, respectively. Stars with Minit>100Msun also showed high contributions to the global feedback, ~25% in both cases. Such massive stars are not accounted for by the current Starburst99 code, which underestimated the ionising and wind luminosities of R136 by factors of ~2 and ~9, respectively. The census inferred a SFR of 0.073+/-0.04Msun/yr for 30 Dor, typically higher than results from popular SFR calibrations. However, it remained consistent with a far-UV luminosity tracer and a combined Halpha and mid-infrared tracer, but only after correcting for Halpha extinction. The global ionising output exceeded measurements from the associated gas and dust, suggesting ~6(+55/-6)% of ionising photons escape the region. When studying very luminous star forming regions, it is therefore essential to include the most massive stars to ensure a reliable energy budget. If 30 Dor is typical of other large star forming regions, estimates of the SFR will be underpredicted if this escape fraction is not accounted for.(abridged)
description: 31 pages, 26 figures, 18 tables, 2 online electronic tables
Virtual reality for the analysis and visualization of scientific numerical models
Creators: name: Orlando, S.
name: Miceli, M.
name: Cicero, U. Lo
name: Ustamujic, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: The complexity of the data generated by (magneto)-hydrodynamic (HD/MHD) simulations requires advanced tools for their analysis and visualization. The dramatic improvements in virtual reality (VR) technologies have inspired us to seek the long-term goal of creating VR tools for scientific model analysis and visualization that would allow researchers to study and perform data analysis on their models within an immersive environment. Here, we report the results obtained at INAF-Osservatorio Astronomico di Palermo in the development of these tools, which would allow for the exploration of 3D models interactively, resulting in highly detailed analysis that cannot be performed with traditional data visualization and analysis platforms. Additionally, these VR-based tools offer the ability to produce high-impact VR content for efficient audience engagement and awareness.
description: 9 pages, 5 figures, proceedings of the conference "Virtual and augmented reality for public outreach". Accepted for publication on Mem. SAIT
Software as a Service - Common Service Bus (SAAS-CSB)
Creators: name: Swaminathan, R.
name: Karnavel, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Software-as-a-Service (SaaS) is a form of cloud computing that relieves the user from the concern of hardware, software installation and management. It is an emerging business model that delivers software applications to the users through Web-based technology. Software vendors have varying requirements and SaaS applications most typically support such requirements. The various applications used by unique customers in a single instance are known as Multi-Tenancy. There would be a delay in service when the user sends the data from multiple applications to multiple destinations and from multiple applications to single destination due to the use of single CSB. This problem can be overcome by using multiple CSB concepts and hence multiple senders can efficiently send their data to multiple receivers at the same time. The multiple clouds are monitored and managed by the SaaS-CSB portal. The idea of SaaS-CSB Portal is to provide a single pane of glass for the user to consume and govern any service from any cloud. Thus, SaaS-CSB application allows companies to save their IT cost and valuable time.
Wowereit, Klaus; Schumacher, Hajo: ...und das ist auch gut so
Creators: name: Scheel, Wolfgang
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 14 Nr. 2 (2007): Werkstatt Schwule Theologie, Band 14, Heft 2
Water in Protoplanetary Disks: Deuteration and Turbulent Mixing
Creators: name: Furuya, Kenji
name: Aikawa, Yuri
name: Nomura, Hideko
name: Hersant, Franck
name: Wakelam, Valentine
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate water and deuterated water chemistry in turbulent protoplanetary disks. Chemical rate equations are solved with the diffusion term, mimicking turbulent mixing in vertical direction. Water near the midplane is transported to the disk atmosphere by turbulence and destroyed by photoreactions to produce atomic oxygen, while the atomic oxygen is transported to the midplane and reforms water and/or other molecules. We find that this cycle significantly decreases column densities of water ice at r < 30 AU, where dust temperatures are too high to reform water ice effectively. The radial extent of such region depends on the desorption energy of atomic hydrogen. Our model indicates that water ice could be deficient even outside the sublimation radius. Outside this radius, the cycle decreases the D/H ratio of water ice from 2x10^-2, which is set by the collapsing core model, to 10^-4-10^-2 in 10^6 yr, without significantly decreasing the water ice column density. The resultant D/H ratios depend on the strength of mixing and the radial distance from the central star. Our finding suggests that the D/H ratio of cometary water (10^-3-10^-4) could be established (i.e. cometary water could be formed) in the solar nebula, even if the D/H ratio of water ice delivered to the disk was very high (10^-2).
description: 54 pages, 17 figures, accepted to ApJ
Enabling Multi-threading in Heterogeneous Quantum-Classical Programming Models
Creators: name: Hayashi, Akihiro
name: Adams, Austin
name: Young, Jeffrey
name: McCaskey, Alexander
name: Dumitrescu, Eugene
name: Sarkar, Vivek
name: Conte, Thomas M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this paper, we address some of the key limitations to realizing a generic heterogeneous parallel programming model for quantum-classical heterogeneous platforms. We discuss our experience in enabling user-level multi-threading in QCOR as well as challenges that need to be addressed for programming future quantum-classical systems. Specifically, we discuss our design and implementation of introducing C++-based parallel constructs to enable 1) parallel execution of a quantum kernel with std::thread and 2) asynchronous execution with std::async. To do so, we provide a detailed overview of the current implementation of the QCOR programming model and runtime, and discuss how we add 1) thread-safety to some of its user-facing API routines, and 2) increase parallelism in QCOR by removing data races that inhibit multi-threading so as to better utilize available computing resources. We also present preliminary performance results with the Quantum++ back end on a single-node Ryzen9 3900X machine that has 12 physical cores (24 hardware threads) with 128GB of RAM. The results show that running two Bell kernels with 12 threads per kernel in parallel outperforms running the kernels one after the other each with 24 threads (1.63x improvement). In addition, we observe the same trend when running two Shor's algorthm kernels in parallel (1.22x faster than executing the kernels one after the other). Furthermore, the parallel version is better in terms of strong scalability. We believe that our design, implementation, and results will open up an opportunity not only for 1) enabling quicker prototyping of parallel/asynchrony-aware quantum-classical algorithms on quantum circuit simulators in the short-term, but also for 2) realizing a generic heterogeneous parallel programming model for quantum-classical heterogeneous platforms in the long-term.
Nuclear astrophysics and electron beams
Creators: name: Schwenk, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Electron beams provide important probes and constraints for nuclear astrophysics. This is especially exciting at energies within the regime of chiral effective field theory (EFT), which provides a systematic expansion for nuclear forces and electroweak operators based on quantum chromodynamics. This talk discusses some recent highlights and future directions based on chiral EFT, including nuclear structure and reactions for astrophysics, the neutron skin and constraints for the properties of neutron-rich matter in neutron stars and core-collapse supernovae, and the dark matter response of nuclei.
description: 8 pages, 7 figures, proceedings of plenary talk at MIT Workshop on Polarized Electron Beams, March 14-16, 2013
On particle dynamics near the singularity inside the Schwarzschild black hole and T-spheres
Creators: name: Radosz, A.
name: Toporensky, A. V.
name: Zaslavskii, O. B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The problem of the speed of the objects inside the Schwarzschild black hole is considered. The general result is that the value of the relative speed of the objects following their non-zero angular momentum trajectories, both of geodesic and non-geodesic character, when approaching the ultimate singularity, tends to the value of speed of light. There is only one exception when both objects move in the same plane and have parallel angular momenta. This outcome appears to have a deeper sense: it reflects the anisotropic character of the dynamics of interior of this particular black hole. The result in question means that near the singularity, collisions of two particles lead to an indefinitely large energy in the center of mass frame. Aforementioned properties have their counterpart in the phenomenon of an indefinitely large blueshift near the singularity. Thus the angular momentum of a particle turns out to be an important feature that affects the final behavior of particle near the singularity. Motivated by this fact, we generalize the Lema\^ıtre frame under the horizon in such a way that reference particles themselves have nonzero angular momentum. Our results apply not only to the Schwarzschild singularity but also to other space-like ones for which the scale factor $g\rightarrow \infty $. We also analyze another type of singulairites for which the circumference radius vanishes but $g$ remains finite.
description: Matches published version