cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 32, Nr. 1 (2003)
Creators: name: Denkmalpflege In Baden-Württemberg – Nachrichtenblatt Der Landesdenkmalpflege
Publisher: name: University Library Heidelberg
Year: 2014

description: Inhalt
 Editorial...1-3
 Eröffnungsansprache...4-8
 Biberach. Geschichte und Kunstgeschichte einer alten Reichsstadt...9-12
 50 Jahre Denkmalpflege in Baden-Württemberg. Zur Geschichte der Denkmalpflege...13-18
 50 Jahre Denkmalpflege in Baden-Württemberg. Inventarisation...19-25
 50 Jahre Denkmalpflege in Baden-Württemberg. Bau- und Kunstdenkmalpflege...26-28
 50 Jahre Denkmalpflege in Baden-Württemberg. Archäologische Denkmalpflege...29-32
 Denkmalpflege und Kirche. Sakralbauten als denkmalpflegerische Aufgabe...33-39
 Kirche und Denkmalpflege. Die Erneuerung der Liturgie durch das Zweite Vatikanische Konzil...40-42
 Kirche und Denkmalpflege. Der Sakralraum zwischen gottesdienstlicher Nutzung und Denkmalpflege...43-46
 Kirche und Denkmalpflege. Rechts- und Verfassungsfragen...47-51
 Rechts- und Verfassungsgrundlagen für den Ausgleich kirchlicher und denkmalpflegerischer Belange und Interessen im Denkmalschutzrecht...52-53
 Die St. Martins-Kirche in Trochtelfingen. Gottesdienstliche Anforderung und denkmalpflegerischer Anspruch...54-61
 Renovation der Domkirche St. Martinus in Rottenburg. Methode der Konzeptfindung...62-68
 Der Dom zu Rottenburg. Aspekte der Umbaugeschichte...69-73
 Evangelische Alexanderkirche Marbach. Im Spannungsfeld zwischen Nutzung und Erhaltung...74-82
 Die Marbacher Alexanderkirche. Nutzerinteresse und denkmalpflegerisches Anliegen...83-88
 Umnutzung von Klosterbauten. Aus der Sicht der staatlichen Bauverwaltung...89-91
 Nutzungserwartungen an Kirchenbauten. St. Dionys in Esslingen und St. Michael in Schwäbisch Hall...92-97
 Die Orgel als Klang-, Technik- und Kunstdenkmal. Eine besondere Herausforderung in der konservatorischen Praxis...98-104
 Umnutzungen von Kirchenbauten. Evangelische Kirche in Bretten-Gölshausen und evangelische Christuskirche in Heidelberg...105-112
 Ornamenta ecclesiae. Zur Bewertung von Kirchenausstattungen aus der Sicht der Denkmalpflege...113-120
 Synagogen als Gegenstand der Denkmalpflege...121-124
 Ulmer Münster: Projekt Südlicher Chorturm. Vorbereitende Maßnahmen und Restaurierung...125-130
 Tausend Jahre Ort der Andacht. Die Michaelskapelle in Gammertingen (Lkrs. Sigmaringen)...131-132
 Schützenswert nicht nur zur Schützenzeit. Die Stadtbierhalle in Biberach...133-134
 Personalia ; Abbildungsnachweis...135-136
 Die Dienststellen des Landesdenkmalamtes
title: [Nachruf] Dr. Rainer Hussendörfer
Creators: name: Bongartz, Norbert
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 37, Nr. 4 (2008), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Strongly Modulated Exfoliation and Functionalization of MXene with Rational Designed Groups in Polymer: A Theoretical Study
Creators: name: Guan, Qiye
name: Yan, Hejin
name: Cai, Yongqing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: As emerging atomically ultrathin metal compounds, MXenes show great promise for catalysts and nanoelectronics applications due to the abundant surface terminations and high metallic conductivity. However, the tendency of the interlayer adhesion and suffering from environmental disturbances significantly limit their endurance and efficiency. Herein via conducting first-principles calculations, we explore surface passivation and exfoliation of MXene via polymers which have been experimentally proven to promote the performance. Nine kinds of monomers together with the typical MXene Ti3C2T2 (T= None, O, F, OH, F0.5O0.5) as prototype composites are explored with respect to the adsorption and charge transfer associated with energetics and chemical redox, respectively. Our work shows that naked Ti3C2 MXene has a strong ability to cleave and decompose the monomers. Surface functionalized Ti3C2F2, Ti3C2FO, and Ti3C2O2 have a weak binding with monomers through only van der Waals force, whereas Ti3C2(OH)2 also exhibits strengthened binding for some monomers. Specific functional groups in the monomer, such as the halogen, sulfur, and hydroxyl groups or a relatively planar aromatic structure, largely contribute to the adsorption. We reveal that the functionalization through polymer would alter the carriers' density via interfacial charge transfer in MXenes. While the naked Ti3C2 and Ti3C2(OH)2 donate electrons to the polymers, the Ti3C2F2, Ti3C2FO, and Ti3C2O2 receive small amounts of electrons transferred from the polymer, highly depending on the types of the monomers. The varying ability of charge transfer and exfoliation energy of different monomers implies great flexibility for designing polymers to exfoliate the MXene and modulate the carrier densities which is highly desired for altering conductivity, dielectric properties, and promoted endurance.
Vanadium dioxide as a natural disordered metamaterial: perfect thermal emission and large broadband negative differential thermal emittance
Creators: name: Kats, Mikhail A.
name: Blanchard, Romain
name: Zhang, Shuyan
name: Genevet, Patrice
name: Ko, Changhyun
name: Ramanathan, Shriram
name: Capasso, Federico
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally demonstrate that a thin (~150 nm) film of vanadium dioxide (VO2) deposited on sapphire has an anomalous thermal emittance profile when heated, which arises due to the optical interaction between the film and the substrate when the VO2 is at an intermediate state of its insulator-metal transition (IMT). Within the IMT region, the VO2 film comprises nanoscale islands of metal- and dielectric-phase, and can thus be viewed as a natural, disordered metamaterial. This structure displays "perfect" blackbody-like thermal emissivity over a narrow wavelength range (~40 cm-1), surpassing the emissivity of our black soot reference. We observed large broadband negative differential thermal emittance over a >10 °C range: upon heating, the VO2/sapphire structure emitted less thermal radiation and appeared colder on an infrared camera. We anticipate that emissivity engineering with thin film geometries comprising VO2 will find applications in infrared camouflage, thermal regulation, infrared tagging and labeling.
description: 3 figures
Understanding the confounding factors of inter-domain routing modeling (Poster)
Creators: name: Kastanakis, Savvas
name: Giotsas, Vasileios
name: Suri, Neeraj
Publisher: name: Zenodo
Year: 2022

description: The Border Gateway Protocol (BGP) is a policy-based protocol, which enables Autonomous Systems (ASes) to independently define their routing policies with little or no global coordination. AS-level topology and AS-level paths inference have been long-standing problems for the past two decades, yet, an important question remains open: "which elements of Internet routing affect the ASpath inference accuracy and how much do they contribute to the error?". In this work, we: (1) identify the confounding factors behind Internet routing modeling, and (2) quantify their contribution on the inference error. Our results indicate that by solving the first-hop inference problem, we can increase the exact-path score from 33.6% to 84.1%, and, by taking geolocation into consideration, we can refine the accuracy up to 94.6%.
Gohberg lemma, compactness, and essential spectrum of operators on compact Lie groups
Creators: name: Dasgupta, Aparajita
name: Ruzhansky, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: Primary 43A77, 47G30, Secondary 22C05, 47A53

description: In this paper we prove a version of the Gohberg lemma on compact Lie groups giving an estimate from below for the distance from a given operator to the set of compact operators on compact Lie groups. As a consequence, we prove several results on bounds for the essential spectrum and a criterion for an operator to be compact. The conditions are given in terms of the matrix-valued symbols of operators.
description: 13 pages
Non-linear Schr$\ddot{o}$dinger equation with time-dependent balanced loss-gain and space-time modulated non-linear interaction
Creators: name: Ghosh, Supriyo
name: Ghosh, Pijush K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider a class of one dimensional vector Non-linear Schr$\ddot{o}$dinger Equation(NLSE) in an external complex potential with Balanced Loss-Gain(BLG) and Linear Coupling(LC) among the components of the Schr$\ddot{o}$dinger field. The solvability of the generic system is investigated for various combinations of time modulated LC and BLG terms, space-time dependent strength of the nonlinear interaction and complex potential. We use a non-unitary transformation followed by a reformulation of the differential equation in a new coordinate system to map the NLSE to solvable equations. Several physically motivated examples of exactly solvable systems are presented for various combinations of LC and BLG, external complex potential and nonlinear interaction. Exact localized nonlinear modes with spatially constant phase may be obtained for any real potential for which the corresponding linear Schr$\ddot{o}$dinger equation is solvable. A method based on supersymmetric quantum mechanics is devised to construct exact localized nonlinear modes for a class of complex potentials. The real superpotential corresponding to any exactly solved linear Schr$\ddot{o}$dinger equation may be used to find a complex-potential for which exact localized nonlinear modes for the NLSE can be obtained. The solutions with singular phases are obtained for a few complex potentials.
description: To be appeared in Annals of Physics Journal
Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review
Creators: name: Yan, Xuefei
name: Wang, Bowen
name: Hai, Yulong
name: Kripalani, Devesh R.
name: Ke, Qingqing
name: Cai, Yongqing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional (2D) van der Waals (vdW) materials have extraordinary thermal properties due to the effect of quantum confinement, making them promising for thermoelectric energy conversion and thermal management in microelectronic devices. In this review, the mechanism of phonon anharmonicity originating from three- and four-phonon interactions is derived. The phonon anharmonicity of 2D vdW materials, involving the Grüneisen parameter, phonon lifetime, and thermal conductivity, is summarized and derived in detail. The size-dependent thermal conductivity of representative 2D vdW materials is discussed experimentally and theoretically. This review will present fundamental and advanced knowledge on how to evaluate the phonon anharmonicity in 2D vdW materials, which will aid the design of new structures and materials for applications related to energy transfer and conversion.
Trajectory Extending Kinetic Monte Carlo Simulations to Evaluate Pure and Gas Mixture Diffusivities through a Dense Polymeric Membrane
Creators: name: Dasgupta, Subhadeep
name: S, Arun K.
name: Ayappa, K. Ganapathy
name: Maiti, Prabal K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: With renewed interest in CO2 separations, carbon molecular sieving (CMS) membrane performance evaluation requires diffusion coefficients as inputs to have reliable estimate of the permeability. An optimal material is desired to have both high selectivity and permeability. Gases diffusing through dense, CMS and polymeric membranes experience extended sub-diffusive regimes which hinders reliable extraction of diffusion coefficients from mean squared displacement data. We improve the sampling of the diffusive landscape by implementing the trajectory extending kinetic Monte Carlo (TEKMC) technique to efficiently extend MD trajectories from ns to μs timescales. The obtained self-diffusion coefficient of pure CO2 in CMS membranes derived from 6FDA/BPDA-DAM precursor polymer melt is found in agreement with previous experimental findings. We also extend the TEKMC algorithm to evaluate the mixture diffusivities in binary mixtures to determine the permselectivity of CO2 in CH4 and N2 mixtures. The mixture diffusion coefficient of CO2 ranges from 1.3-7 x 10^{-6} cm6{2}s^{-1} in binary mixture CO2:CH4 which is significantly higher than the pure gas diffusion coefficient. Robeson plot comparisons show that the permselectivity obtained from pure gas diffusion data are significantly lower than that predicted using mixture diffusivity data. Specifically in the case of the CO2:N2 mixture we find that using mixture diffusivities led to permeslectivites lying above the Robeson limit highlighting the importance of using mixture diffusivity data for an accurate evaluation of the membrane performance. Combined with gas solubilities obtained from grand-canonical Monte Carlo simulations, our work shows that simulations with the TEKMC method can be used to reliably evaluate the performance of materials for gas separations.
description: Software available on https://github.com/PKMLab/tekmc Accepted on October 25, 2023 in The Journal of Physical Chemistry B
Physical characteristics of G331.5-0.1: The luminous central region of a Giant Molecular Cloud
Creators: name: Merello, Manuel
name: Bronfman, Leonardo
name: Garay, Guido
name: Nyman, Lars-Ake
name: Evans, Neal J.
name: Walmsley, C. Malcolm
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report molecular line and dust continuum observations toward the high-mass star forming region G331.5-0.1, one of the most luminous regions of massive star-formation in the Milky Way, located at the tangent region of the Norma spiral arm, at a distance of 7.5 kpc. Molecular emission was mapped toward the G331.5-0.1 GMC in the CO (J=1-0) and C18O (J=1-0) lines with NANTEN, while its central region was mapped in CS (J=2-1 and J=5-4) with SEST, and in CS (J=7-6) and 13CO (J=3-2) with ASTE. Continuum emission mapped at 1.2 mm with SIMBA and at 0.87 mm with LABOCA reveal the presence of six compact and luminous dust clumps, making this source one of the most densely populated central regions of a GMC in the Galaxy. The dust clumps are associated with molecular gas and they have the following average properties: size of 1.6 pc, mass of 3.2x10^3 Msun, molecular hydrogen density of 3.7x10^4 cm^{-3}, dust temperature of 32 K, and integrated luminosity of 5.7x10^5 Lsun, consistent with values found toward other massive star forming dust clumps. The CS and 13CO spectra show the presence of two velocity components: a high-velocity component at ~ -89 km s^{-1}, seen toward four of the clumps, and a low-velocity component at ~ -101 km s^{-1} seen toward the other two clumps. Radio continuum emission is present toward four of the molecular clumps, with spectral index estimated for two of them of 0.8+-0.2 and 1.2+-0.2. A high-velocity molecular outflow is found at the center of the brightest clump, with a line width of 26 km s^{-1} (FWHM) in CS (J=7-6). Observations of SiO (J=7-6 and J=8-7), and SO (J_K=8_8-7_7 and J_K=8_7-7_6) lines provide estimates of the gas rotational temperature toward this outflow >120 K and >75 K, respectively.
description: 34 pages, 20 figures, 11 tables, Accepted for Publication in The Astrophysical Journal
Ultra-strong MgII Absorbers as a Signature of Cool Intragroup Gas
Creators: name: Gauthier, Jean-Rene
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of a spectroscopic survey of galaxies in the vicinity of an ultra-strong MgII λλ2786,2803 absorber of rest-frame absorption equivalent width W_r(2796)=4.2Å at z=0.5624. This absorber was originally found at projected separation ρ=246 kpc of a luminous red galaxy (LRG) at z=0.5604. Magellan IMACs spectroscopy has revealed two galaxies at ρ< 60 kpc (z=0.5623 and z=0.5621) and a third one at ρ=209 kpc (z=0.5623) near the redshift of the absorber.These findings indicate that the absorbing gas resides in a group environment. Combining SDSS broadband photometry with additional B-, K_s-band images and optical spectroscopy, we perform a stellar population synthesis analysis of the group members to characterize their star formation histories, on-going star formation rates (SFR), and stellar masses. We find that the two group members at ρ< 60 kpc are best characterized by old stellar populations (>1 Gyr) and little on-going star formation activity (SFR<2.9 \msun/yr), while the third object at ρ=209 kpc exhibit [OII]- and continuum-derived SFR consistent with SFR>3.0 \msun/yr. Including the two ultra-strong MgII absorbers analyzed by Nestor et al. (2011), this is the third ultra-strong MgII absorber for which a detailed study of the galactic environment is available. All three aborbers are found in galaxy groups. We examine different physical mechanisms giving rise to the absorbing gas including starburst driven-outflows, cold filaments, extended rotating disks, and stripped gas. We argue that the large equivalent width observed in these absorbers is more likely due to the gas dynamics of the intragroup medium rather than driven by starburst outflows.
description: 13 pages, 5 figures, Accepted for publication in MNRAS
Land Use Policy and Agriculture: A National Perspective
Creators: name: Cotner, Melvin L.
name: Cotner, Melvin L.
Publisher: name: Unknown
Year: 1976
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development
Crop Production/Industries
Land Economics/Use
Resource /Energy Economics and Policy

description: More new cropland is developed each year in the United States than is lost to urban development. While 1.3 million acres are added to the Nation's cropland base each year, only about 500,000 acres are lost to urbanization, public lands (parks, reservoirs, highways), and other intensive uses. However, 2.2 million more crop acres are converted to more extensive uses such as grass and trees because of low soil fertility, terrain unsuited to modern machinery, and small uneconomic fields. This total loss of 2.7 million acres, when weighed against the new cropland developed, gives a net loss each year of 1.4 million cropland acres. This loss is not significant when compared to the national cropland base of 385 million acres and generally rising productivity levels. The United States will be able to meet its anticipated domestic food needs and moderately high export demands. Cropland losses, however, can be significant in local areas, especially where urban uses compete for the better agricultural lands. Public policy is needed to guide this competition and help assure the wise use of agricultural land. While the Federal Government, through its numerous programs and policies, indirectly has an important influence on how land is used, the authority to control private land use unmistakably rests with the States, counties, and municipalities.
description: The author is Director, Natural Resource Economics Division, Economic Research Service, U.S. Department of Agriculture. This report is based on his presentation at a Conference on Agricultural Land Preservation sponsored by the Institute for Environmental Studies, University of Washington, Seattle, May 1, 1976.
Gain fractions of future neutrino oscillation facilities over T2K and NOvA
Creators: name: Blennow, Mattias
name: Coloma, Pilar
name: Donini, Andrea
name: Fernandez-Martinez, Enrique
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We evaluate the probability of future neutrino oscillation facilities to discover leptonic CP violation and/or measure the neutrino mass hierarchy. We study how this probability is affected by positive or negative hints for these observables to be found at T2K and NOvA. We consider the following facilities: LBNE; T2HK; and the 10 GeV Neutrino Factory (NF10), and show how their discovery probabilities change with the running time of T2K and NOvA conditioned to their results. We find that, if after 15 years T2K and NOvA have not observed a 90% CL hint of CP violation, then LBNE and T2HK have less than a 10% chance of achieving a 5sigma discovery, whereas NF10 still has a ca 40% chance to do so. Conversely, if T2K and NOvA have an early 90% CL hint in 5 years from now, T2HK has a rather large chance to achieve a 5sigma CP violation discovery (75% or 55%, depending on whether the mass hierarchy is known or not). This is to be compared with the 90% (30%) probability that NF10 (LBNE) would have to observe the same signal at 5sigma. A hierarchy measurement at 5sigma is achievable at both LBNE and NF10 with more than 90% probability, irrespectively of the outcome of T2K and NOvA. We also find that if LBNE or a similar very long baseline super-beam is the only next generation facility to be built, then it is very useful to continue running T2K and NOvA (or at least T2K) beyond their original schedule in order to increase the CP violation discovery chances, given their complementarity.
description: JHEP style, 23 pages, 9 pdf figures
Highly Modulated Dual Semimetal and Semiconducting Gamma-GeSe with Strain Engineering
Creators: name: Huan, Changmeng
name: Wang, Pu
name: He, Binghan
name: Cai, Yongqing
name: Ke, Qingqing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Layered hexagonal Gamma--GeSe, a new polymorph of GeSe synthesized recently, shows strikingly high electronic conductivity in its bulk form (even higher than graphite) while semiconducting in the case of monolayer (1L). In this work, by using first-principles calculations, we demonstrate that, different from its orthorhombic phases of GeSe, the Gamma--GeSe shows a small spatial anisotropic dependence and a strikingly thickness-dependent behavior with transition from semimetal (bulk, 0.04 eV) to semiconductor (1L, 0.99 eV), and this dual conducting characteristic realized simply with thickness control in Gamma-GeSe has not been found in other 2D materials before. The lacking of d-orbital allows charge carrier with small effective mass (0.16 m0 for electron and 0.23 m0 for hole) which is comparable to phosphorene. Meanwhile, 1L Gamma--GeSe shows a superior flexibility with Young's modulus of 86.59 N/m, only one-quarter of that of graphene and three-quarters of that of MoS2, and Poisson's ratio of 0.26, suggesting a highly flexible lattice. Interestingly, 1L Gamma-GeSe shows an in-plane isotropic elastic modulus inherent with hexagonal symmetry while an anisotropic in-plane effective mass owing to shifted valleys around the band edges. We demonstrate the feasibility of strain engineering in inducing indirect-direct and semiconductor-metal transitions resulting from competing bands at the band edges. Our work shows that the free 1L Gamma-GeSe shows a strong light absorption (~106 cm-1) and an indirect bandgap with rich valleys at band edges, enabling high carrier concentration and a low rate of direct electron-hole recombination which would be promising for nanoelectronics and solar cell applications.
Comprehensive Energy Footprint Benchmarking of Strong Parallel Electrified Powertrain
Creators: name: Anwar, Hamza
name: Vishwanath, Aashrith
name: Chunodkar, Apurva
name: Ahmed, Qadeer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work presents comprehensive energy management and in-depth energy footprint analysis of an electrified strong parallel commercial vehicle. We use the PS3 framework, validated real-world powertrain system models, and Pareto-optimal analysis to optimize fuel consumption and harmful pollutant emissions. The approach involves dynamic optimization of 13 states and 4 control levers with complex interactions between multiple subsystems for a parallel hybrid electric pick-up and delivery truck. These subsystems exhibit thermal, electrical, and mechanical dynamics at different time scales, and contain kinematic and combinatorial constraints, integer- and real-valued variables, interpolated look-up tables, and data maps. A Pareto-optimal solution is found by carefully optimizing fuel and NOx emissions to understand the energy footprint of the electrified powertrain. The presented results exhibit rich analysis and complex interactions among the powertrain subsystems to unearth a 7% improvement in its fuel consumption and 29% pollutant NOx reduction when compared to solution from a coarsely modeled powertrain system.
description: Revised results, added energy analysis, made submission ready
US-GAN: On the importance of Ultimate Skip Connection for Facial Expression Synthesis
Creators: name: Akram, Arbish
name: Khan, Nazar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We demonstrate the benefit of using an ultimate skip (US) connection for facial expression synthesis using generative adversarial networks (GAN). A direct connection transfers identity, facial, and color details from input to output while suppressing artifacts. The intermediate layers can therefore focus on expression generation only. This leads to a light-weight US-GAN model comprised of encoding layers, a single residual block, decoding layers, and an ultimate skip connection from input to output. US-GAN has $3\times$ fewer parameters than state-of-the-art models and is trained on $2$ orders of magnitude smaller dataset. It yields $7\%$ increase in face verification score (FVS) and $27\%$ decrease in average content distance (ACD). Based on a randomized user-study, US-GAN outperforms the state of the art by $25\%$ in face realism, $43\%$ in expression quality, and $58\%$ in identity preservation.
Catastrophic Consequences of Kicking the Chameleon
Creators: name: Erickcek, Adrienne L.
name: Barnaby, Neil
name: Burrage, Clare
name: Huang, Zhiqi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The physics of the "dark energy" that drives the current cosmological acceleration remains mysterious, and the dark sector may involve new light dynamical fields. If these light scalars couple to matter, a screening mechanism must prevent them from mediating an unacceptably strong fifth force locally. Here we consider a concrete example: the chameleon mechanism. We show that the same coupling between the chameleon field and matter employed by the screening mechanism also has catastrophic consequences for the chameleon during the Universe's first minutes. The chameleon couples to the trace of the stress-energy tensor, which is temporarily non-zero in a radiation-dominated universe whenever a particle species becomes non-relativistic. These "kicks" impart a significant velocity to the chameleon field, causing its effective mass to vary non-adiabatically and resulting in the copious production of quantum fluctuations. Dissipative effects strongly modify the background evolution of the chameleon field, invalidating all previous classical treatments of chameleon cosmology. Moreover, the resulting fluctuations have extremely high characteristic energies, which casts serious doubt on the validity of the effective theory. Our results demonstrate that quantum particle production can profoundly affect scalar-tensor gravity, a possibility not previously considered. Working in this new context, we also develop the theory and numerics of particle production in the regime of strong dissipation.
description: 5 pages, 5 figures; accepted for publication in PRL
Anomalous diffusion in a randomly modulated velocity field
Creators: name: Aibara, Noriaki
name: Fujimoto, Naoaki
name: Katagiri, So
name: Matsuo, Yutaka
name: Matsuoka, Yoshiki
name: Sugamoto, Akio
name: Yokoyama, Ken
name: Yumibayashi, Tsukasa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper proposes a simple model of anomalous diffusion, in which a particle moves with the velocity field induced by a single "dipole" (a doublet or a pair of source and sink), whose moment is modulated randomly at each time step. A motivation to introduce such a model is that it may serve as a toy model to investigate an anomalous diffusion of fluid particles in turbulence. We perform a numerical simulation of the fractal dimension of the trajectory using periodic boundary conditions in two and three dimensions. For a wide range of the dipole moment, we estimate the fractal dimension of the trajectory to be 1.5--1.9 (2D) and 1.6--2.7 (3D).
description: 21 pages, 9 figures
Generation of quantum coherence for continuous variables between causally disconnected regions in dilaton spacetime
Creators: name: Xiao, Qinglong
name: Wen, Cuihong
name: Jing, Jiliang
name: Wang, Jieci
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the dynamics of Gaussian quantum coherence under the background of a Garfinkle-Horowitz-Strominger dilaton black hole. It is shown that the dilaton field has evident effects on the degree of coherence for all the bipartite subsystems. The bipartite Gaussian coherence is not affected by the frequency of the scalar field for an uncharged or an extreme dilaton black hole. It is found that the initial coherence is not completely destroyed even for an extreme dilaton black hole, which is quite different from the behavior of quantum steering because the latter suffers from a "sudden death" under the same conditions. This is nontrivial because one can employ quantum coherence as a resource for quantum information processing tasks even if quantum correlations have been destroyed by the strong gravitational field. In addition, it is demonstrated that the generation of quantum coherence between the initial separable modes is easier for low-frequency scalar fields. At the same time, quantum coherence is smoothly generated betweenone pair of partners and exhibits a "sudden birth" behavior between another pairs in the curved spacetime.
description: 15 pages, 7 figures
Critical topology and pressure-induced superconductivity in the van der Waals compound AuTe2Br
Creators: name: Cheng, Erjian
name: Shi, Xianbiao
name: Yan, Limin
name: Huang, Tianheng
name: Liu, Fengliang
name: Ma, Wenlong
name: Wang, Zeji
name: Jia, Shuang
name: Sun, Jian
name: Zhao, Weiwei
name: Yang, Wenge
name: Xu, Yang
name: Li, Shiyan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The study on quantum spin Hall effect and topological insulators formed the prologue to the surge of research activities in topological materials in the past decade. Compared to intricately engineered quantum wells, three-dimensional weak topological insulators provide a natural route to the quantum spin Hall effect, due to the adiabatic connection between them and a stack of quantum spin Hall insulators, and the convenience in exfoliation of samples associated with their van der Waals-type structure. Despite these advantages, both theoretical prediction and experimental identification of weak topological insulators remain scarce. Here, based on first-principles calculations, we show that AuTe2Br locates at the boundary between a strong and a weak topological insulating state. More interestingly, the critical topology of AuTe2Br persists up to an applied pressure of ~ 15.4 GPa before a structural phase transition accompanied by a change of electronic topology and the onset of superconductivity. Our results establish AuTe2Br as a new candidate for weak topological insulators with the potential to realize various other topological phases of matter.
ReAFFPN: Rotation-equivariant Attention Feature Fusion Pyramid Networks for Aerial Object Detection
Creators: name: Sun, Chongyu
name: Xu, Yang
name: Wu, Zebin
name: Wei, Zhihui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper proposes a Rotation-equivariant Attention Feature Fusion Pyramid Networks for Aerial Object Detection named ReAFFPN. ReAFFPN aims at improving the effect of rotation-equivariant features fusion between adjacent layers which suffers from the semantic and scale discontinuity. Due to the particularity of rotational equivariant convolution, general methods are unable to achieve their original effect while ensuring rotation equivariance of the network. To solve this problem, we design a new Rotation-equivariant Channel Attention which has the ability to both generate channel attention and keep rotation equivariance. Then we embed a new channel attention function into Iterative Attentional Feature Fusion (iAFF) module to realize Rotation-equivariant Attention Feature Fusion. Experimental results demonstrate that ReAFFPN achieves a better rotation-equivariant feature fusion ability and significantly improve the accuracy of the Rotation-equivariant Convolutional Networks.
description: IGARSS, 4 pages, 3 figures
Atomistics of vapor-liquid-solid nanowire growth
Creators: name: Wang, Hailong
name: Zepeda-Ruiz, Luis A.
name: Gilmer, George H.
name: Upmanyu, Moneesh
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Vapor-liquid-solid (VLS) route and its variants are routinely used for scalable synthesis of semiconducting nanowires yet the fundamental growth processes remain unknown. Here, we employ atomic-scale computations based on model potentials to study the stability and growth of gold-catalyzed silicon nanowires (SiNWs). Equilibrium studies uncover segregation at the solid-like surface of the catalyst particle, a liquid AuSi droplet, and a silicon-rich droplet-nanowire interface enveloped by heterogeneous truncating facets. Supersaturation of the droplets leads to rapid 1D growth on the truncating facets and much slower nucleation-controlled 2D growth on the main facet. Surface diffusion is suppressed and the excess Si flux occurs through the droplet bulk which, together with the Si-rich interface and contact line, lowers the nucleation barrier on the main facet. The ensuing step flow is modified by Au diffusion away from the step edges. Our study highlights key interfacial characteristics for morphological and compositional control of semiconducting nanowire arrays.
description: accepted in Nature Communications (13 pages 7 figures, Supplementary Information including Movies)
Hyperfine-frequency shifts of alkali-metal atoms during long-range collisions
Creators: name: McGuyer, B. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Collisions with chemically inert atoms or molecules change the hyperfine coupling of an alkali-metal atom through the hyperfine-shift interaction. This interaction is responsible for the pressure shifts of the microwave resonances of alkali-metal atoms in buffer gases, is an important spin interaction in alkali-metal--noble-gas van der Waals molecules, and is anticipated to enable the magnetoassociation of ultracold molecules such as RbSr. An improved estimate is presented for the long-range asymptote of this interaction for Na, K, Rb, and Cs. To test the results, the change in hyperfine coupling due to a static electric field is estimated and reasonable agreement is found.
description: 5 pages
Size of the zero set of solutions of elliptic PDEs near the boundary of Lipschitz domains with small Lipschitz constant
Creators: name: Gallegos, Josep M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: Let $Ω\subset \mathbb R^d$ be a $C^1$ domain or, more generally, a Lipschitz domain with small Lipschitz constant and $A(x)$ be a $d \times d$ uniformly elliptic, symmetric matrix with Lipschitz coefficients. Assume $u$ is harmonic in $Ω$, or with greater generality $u$ solves $\operatorname{div}(A(x)\nabla u)=0$ in $Ω$, and $u$ vanishes on $Σ= \partialΩ\cap B$ for some ball $B$. We study the dimension of the singular set of $u$ in $Σ$, in particular we show that there is a countable family of open balls $(B_i)_i$ such that $u|_{B_i \cap Ω}$ does not change sign and $K \backslash \bigcup_i B_i$ has Minkowski dimension smaller than $d-1-ε$ for any compact $K \subset Σ$. We also find upper bounds for the $(d-1)$-dimensional Hausdorff measure of the zero set of $u$ in balls intersecting $Σ$ in terms of the frequency. As a consequence, we prove a new unique continuation principle at the boundary for this class of functions and show that the order of vanishing at all points of $Σ$ is bounded except for a set of Hausdorff dimension at most $d-1-ε$.
description: Modified introduction. Final version published in Calc. Var. Partial Differential Equations
EXPRESSION OF POSTMODERN IDEAS IN THE WORKS OF MURIEL SPARK
Creators: name: M.Z.Djalaldinova, PhD student, Andizhan state institute of foreign languages, Department of Theoretical aspects of English
Publisher: name: Zenodo
Year: 2023

description: This article explores the expression of postmodern ideas in the works of Muriel Spark, a prominent British novelist and playwright. Spark's literary creations embody and reflect key tenets of postmodernism through their experimentation with narrative structures, intertextuality, and metafictional elements. The article discusses several notable works of Spark where postmodern elements can be observed, including "The Prime of Miss Jean Brodie," "The Driver's Seat," "Loitering with Intent," "A Far Cry from Kensington," and "The Abbess of Crewe." It examines how Spark's novels employ fragmentation, irony, parody, intertextuality, unreliable narrators, and self-reflexivity to challenge traditional notions of storytelling, truth, and reality. By embracing these postmodern techniques, Spark's works invite readers to engage with complex narratives and question the constructed nature of language and perception. The article concludes by emphasizing Spark's significant contribution to postmodern literature and her enduring influence on contemporary writers.
Keywords and phrases: Muriel Spark, postmodernism, expression, works, literature, narrative structures, intertextuality, metafiction, "The Prime of Miss Jean Brodie," "The Driver's Seat," "Loitering with Intent," "A Far Cry from Kensington," "The Abbess of Crewe," fragmentation, irony, parody, unreliable narrators, self-reflexivity, challenging, storytelling, truth, reality, language, perception, contribution, influence.
On construction of quantum codes with dual-containing quasi-cyclic codes
Creators: name: Guan, Chaofeng
name: Li, Ruihu
name: Lu, Liangdong
name: Liu, Yang
name: Song, Hao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: One of the main objectives of quantum error-correction theory is to construct quantum codes with optimal parameters and properties. In this paper, we propose a class of 2-generator quasi-cyclic codes and study their applications in the construction of quantum codes over small fields. Firstly, some sufficient conditions for these 2-generator quasi-cyclic codes to be dual-containing concerning Hermitian inner product are determined. Then, we utilize these Hermitian dual-containing quasi-cyclic codes to produce quantum codes via the famous Hermitian construction. Moreover, we present a lower bound on the minimum distance of these quasi-cyclic codes, which is helpful to construct quantum codes with larger lengths and dimensions. As the computational results, many new quantum codes that exceed the quantum Gilbert-Varshamov bound are constructed over $F_q$, where $q$ is $2,3,4,5$. In particular, 16 binary quantum codes raise the lower bound on the minimum distance in Grassl's table \cite{Grassl:codetables}. In nonbinary cases, many quantum codes are new or have better parameters than those in the literature.
description: There was a minor problem with Theorem 7 in the previous version, which we have fixed in this version
Cubic nonlinear squeezing and its decoherence
Creators: name: Kala, Vojtěch
name: Marek, Petr
name: Filip, Radim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Squeezed states of the harmonic oscillator are a common resource in applications of quantum technology. If the noise is suppressed in a nonlinear combination of quadrature operators below threshold for all possible up-to-quadratic Hamiltonians, the quantum states are non-Gaussian and we refer to the noise reduction as nonlinear squeezing. Non-Gaussian aspects of quantum states are often more vulnerable to decoherence due to imperfections appearing in realistic experimental implementations. Therefore, a stability of nonlinear squeezing is essential. We analyze the behavior of quantum states with cubic nonlinear squeezing under loss and dephasing. The properties of nonlinear squeezed states depend on their initial parameters which can be optimized and adjusted to achieve the maximal robustness for the potential applications.
description: 17 pages, 10 figures
Energy conservation and gravity waves in sound-proof treatments of stellar interiors: Part II Lagrangian constrained analysis
Creators: name: Vasil, Geoffrey M.
name: Lecoanet, Daniel
name: Brown, Benjamin P.
name: Wood, Toby S.
name: Zweibel, Ellen G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The speed of sound greatly exceeds typical flow velocities in many stellar and planetary interiors. To follow the slow evolution of subsonic motions, various sound-proof models attempt to remove fast acoustic waves whilst retaining stratified convection and buoyancy dynamics. In astrophysics, anelastic models typically receive the most attention in the class of sound-filtered stratified models. Generally, anelastic models remain valid in nearly adiabatically stratified regions like stellar convection zones, but may break down in strongly sub-adiabatic, stably stratified layers common in stellar radiative zones. However, studying stellar rotation, circulation, and dynamos requires understanding the complex coupling between convection and radiative zones, and this requires robust equations valid in both regimes. Here we extend the analysis of equation sets begun in Brown Vasil & Zweibel 2012, which studied anelastic models, to two types of pseudo-incompressible models. This class of models has received attention in atmospheric applications, and more recently in studies of white-dwarf supernovae progenitors. We demonstrate that one model conserves energy but the other does not. We use Lagrangian variational methods to extend the energy conserving model to a general equation of state, and dub the resulting equation set the Generalized Pseudo-Incompressible (GPI) model. We show that the GPI equations suitably capture low frequency phenomena in both convection and radiative zones in stars and other stratified systems, and we provide recommendations for converting low-Mach number codes to this equation set.
description: 23 pages, submitted to ApJ
Crossing of the branch cut: the topological origin of a universal 2π-phase retardation in non-Hermitian metasurfaces
Creators: name: Colom, Rémi
name: Mikheeva, Elena
name: Achouri, Karim
name: Zuniga-Perez, Jesus
name: Bonod, Nicolas
name: Martin, Olivier J. F.
name: Burger, Sven
name: Genevet, Patrice
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Full wavefront control by photonic components requires that the spatial phase modulation on an incoming optical beam ranges from 0 to 2π. Because of their radiative coupling to the environment, all optical components are intrinsically non-Hermitian systems, often described by reflection and transmission matrices with complex eigenfrequencies. Here, we show that Parity-Time symmetry breaking -- either explicit or spontaneous -- moves the position of Zero singularities of the reflection or transmission matrices from the real axis to the upper part of the complex frequency plane. A universal 0 to 2π-phase gradient of an output channel as a function of the real frequency excitation is thus realized whenever the discontinuity branch bridging a Zero and a Pole, i.e a pair of singularities, is crossing the real axis. This basic understanding is applied to engineer electromagnetic fields at interfaces, including, but not limited to, metasurfaces. Non-Hermitian topological features associated with exceptional degeneracies or branch cut crossing are shown to play a surprisingly pivotal role in the design of resonant photonic systems.
On the c-entropy of L-systems with Schrodinger operator
Creators: name: Belyi, Sergey
name: Makarov, Konstantin
name: Tsekanovskii, Eduard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 47A10 (primary), 47N50 (secondary)

description: We study L-systems whose main operators are extensions of one-dimensional half-line Schrödinger operators with deficiency indices $(1, 1)$, the Schrödinger L-systems. Introducing new concepts of an c-entropy and dissipation coefficient for an L-system we discuss the following dual problems: describe Schrödinger L-systems (1) with a given c-entropy and minimal dissipation coefficient, and (2) with a given dissipation coefficient and maximal c-entropy. Also, we analyze in detail the dual c-entropy problems for Schrödinger L-systems with sectorial and extremal main operators.
description: 47 pages, 2 figures