cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Almost Riemann Solitons with Vertical Potential on Conformal Cosymplectic Contact Complex Riemannian Manifolds
Creators: name: Manev, Mancho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary 53C25, 53D15, 53C50, Secondary 53C44, 53D35, 70G45

description: Almost Riemann solitons are introduced and studied on an almost contact complex Riemannian manifold, i.e. an almost contact B-metric manifold, obtained from a cosymplectic manifold of the considered type by a contact conformal transformation of the Reeb vector field, its dual contact 1-form, the B-metric, and its associated B-metric. The potential of the studied soliton is assumed to be in the vertical distribution, i.e. it is collinear to the Reeb vector field. In this way, manifolds from the four main classes of the studied manifolds are obtained. Curvature properties of the resulting manifolds are derived. An explicit example of dimension five is constructed. The Bochner curvature tensor is used (for dimension at least seven) as a conformal invariant to get properties and construct an explicit example in relation to the obtained results.
description: 15 pages
Supplementary materials from Decoding and modifying dynamic attentional bias in gaming disorder
Creators: name: Oka, Taiki
name: Kubo, Takatomi
name: Kobayashi, Nao
name: Murakami, Misa
name: Chiba, Toshinori
name: Cortese, Aurelio
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 320999
subject: Neurosciences not elsewhere classified

description: Supplementary methods and results
Isbell Duality
Creators: name: Baez, John C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: Mathematicians love dualities. After a brief explanation of dualities, with examples, we turn to one of the purest and most beautiful: Isbell duality. For any category $\mathsf{C}$, this gives an adjunction between the category of presheaves on $\mathsf{C}$, namely the functor category $[\mathsf{C}^{\text{op}}, \mathsf{Set}]$, and the opposite of the category of copresheaves on $\mathsf{C}$, namely $[\mathsf{C}, \mathsf{Set}]^{\text{op}}$.
description: 3 pages
Particle in a cavity in one-dimensional bandlimited quantum mechanics
Creators: name: Sailer, K.
name: Peli, Z.
name: Nagy, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The effects of the generalized uncertainty principle (GUP) on the low-energy stationary states of a particle moving in a cavity with no sharp boundaries are determined by means of the perturbation expansion in the framework of one-dimensional bandlimited quantum mechanics. A realization of GUP resulting in the existence of a finite ultraviolet (UV) wave-vector cutoff $K\sim 1/\ell_P$ (with the Planck length $\ell_P$) is considered. The cavity of the size $\ell \gg \ell_P$ is represented by an infinitely deep trapezoid-well potential with boundaries smeared out in a range $R$ satisfying the inequalities $\ell\gg R\gtrsim \ell_P$. In order to determine the energy shifts of the low-lying stationary states, the usual perturbation expansion is reformulated in a manner that enables one to treat consistently order-by-order the direct and indirect GUP effects, i.e., those due to the modification of the Hamiltonian and the lack of the UV modes, respectively. It is shown that the leading terms of the indirect and the direct GUP effects are of the first and second order, respectively, in the small parameter $\ell_P/\ell$ in agreement with our previous finding in a more naive approach [1].
description: 17 pages
Exact solution for quantum strong long-range models via a generalized Hubbard-Stratonovich transformation
Creators: name: Román-Roche, Juan
name: Herráiz-López, Víctor
name: Zueco, David
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present an exact analytical solution for quantum strong long-range models in the canonical ensemble by extending the classical solution proposed in [Campa et al., J. Phys. A 36, 6897 (2003)]. Specifically, we utilize the equivalence between generalized Dicke models and interacting quantum models as a generalization of the Hubbard-Stratonovich transformation. To demonstrate our method, we apply it to the Ising chain in transverse field and discuss its potential application to other models, such as the Fermi-Hubbard model, combined short and long-range models and models with antiferromagnetic interactions. Our findings indicate that the critical behaviour of a model is independent of the range of interactions, within the strong long-range regime, and the dimensionality of the model. Moreover, we show that the order parameter expression is equivalent to that provided by mean-field theory, thus confirming the exactness of the latter. Finally, we examine the algebraic decay of correlations and characterize its dependence on the range of interactions in the full phase diagram.
description: 12 pages, 6 figures
The Arecibo Galaxy Environment Survey VII : A Dense Filament With Extremely Long HI Streams
Creators: name: Taylor, R.
name: Minchin, R. F.
name: Herbst, H.
name: Davies, J. I.
name: Rodriguez, R.
name: Vazquez, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present completed observations of the NGC 7448 galaxy group and background volume as part of the blind neutral hydrogen Arecibo Galaxy Environment Survey (AGES). Our observations cover a region spanning 5x4 degrees, over a redshift range of approximately -2,000 < cz < 20,000 km/s. A total of 334 objects are detected, mostly in three overdensities at cz $\sim$7,500, cz $\sim$9,600 and cz $\sim$ 11,400 km/s. The galaxy density is extremely high (15 per square degree) and many ($\sim$24%) show signs of extended HI emission, including some features as much as 800 kpc in projected length. We describe the overall characteristics of this environment : kinematics, typical galaxy colours and mass to light ratios, and substructure. To aid in the cataloguing of this data set, we present a new FITS viewer (FRELLED : Fits Realtime Explorer of Low Latency in Every Dimension). This incorporates interactive source cataloguing tools which increase our source extraction speed by approximately a factor of 50.
description: 15 pages, 13 figures, accepted for publication in MNRAS
Dissipation and decoherence induced by collective dephasing in coupled-qubit system with a common bath
Creators: name: Wang, Z. H.
name: Ji, Y. J.
name: Li, Yong
name: Zhou, D. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The longitudinal coupling of a system to the bath usually induces the pure dephasing of the system. In this paper, we study the collective dephasing induced dissipation and decoherence in a coupled-qubit system with a common bath. It is shown that, compared with the case of the same system with independent baths, the interference between the dephasing processes of different qubits induced by the common bath significantly changes the dissipation of the system. For the system of two coupled qubits, the interference leads to a faster decoherence in the non-single-excitation subspaces and a slower dissipation (and decoherence) in the single-excitation subspace. For the system of multiple coupled qubits, we also find the slower dissipation in the single-excitation subspace and obtain the decay rates of the first excited states for different system sizes numerically. All our results on collective dephasing induced dissipation can be explained based on a simple model with Fermi's golden rule.
description: 7 pages, 6 figures. Comments are welcomed
Effect of solar free oscillations on TianQin's range acceleration noise
Creators: name: Liu, Kun
name: Luo, Chengjian
name: Zhang, Xuefeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: TianQin is a proposed space-based gravitational-wave detector mission to be deployed and operated in high Earth orbits. As a sequel to [Zhang et al. Phys. Rev. D 103, 062001 (2021)], we investigate a type of ``orbital noise'' in TianQin's range acceleration that is caused by gravitational perturbation associated with solar free oscillations. Frequencies of such oscillations are typically within TianQin's measurement band of 0.1 mHz--1 Hz, and the disturbance level needs careful assessment. By using high-precision orbit propagation and adding the Sun's time-variable oblateness $J_2$ to detailed gravity-field models, we examine the effect in the frequency domain and show that the solar free oscillation noise is expected to be two orders of magnitude lower than the noise requirement on single links and hence has little impact on the mission.
description: 10 pages, 5 figures
Microscopic Encoding of Macroscopic Universality: Scaling Properties of Dirac Eigenspectra near QCD Chiral Phase Transition
Creators: name: Ding, Heng-Tong
name: Huang, Wei-Ping
name: Mukherjee, Swagato
name: Petreczky, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Macroscopic properties of the strong interaction near its chiral phase transition exhibit scaling behaviors, which are the same as those observed close to the magnetic transition in a 3-dimensional classical spin system with $O(4)$ symmetry. We show that the universal scaling properties of the chiral phase transition in Quantum Chromodynamics (QCD) at the macroscale are, in fact, encoded within the microscopic energy levels of its fundamental constituents, the quarks. We establish a connection between the cumulants of the chiral order parameter, i.e., the chiral condensate, and the correlations among the energy levels of quarks, i.e., the eigenspectra of the massless QCD Dirac operator. This relation elucidates how the fluctuations of the chiral condensate arise from the correlations within the infrared part of the energy spectra of quarks, and naturally leads to a generalization of the Banks-Casher relation for the cumulants of the chiral condensate. Then, through (2+1)-flavor lattice QCD calculations with varying light quark masses near the QCD chiral transition, we demonstrate that the correlations among the infrared part of the Dirac eigenvalue spectra exhibit same universal scaling behaviors as expected of the cumulants of the chiral condensate. We find that these universal scaling behaviors extend up to the physical values of the up and down quark masses. Our study reveals how the hidden scaling features at the microscale give rise to the macroscopic universal properties of QCD.
description: 5 pages main text + 3 pages supplemental material, version to appear in PRL
An Agent-Based Approach to Component Management
Creators: name: Lillis, David
name: Collier, Rem
name: Dragone, Mauro
name: O'Hare, G. M. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Multiagent Systems (cs.MA)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This paper details the implementation of a software framework that aids the development of distributed and self-configurable software systems. This framework is an instance of a novel integration strategy called SoSAA (SOcially Situated Agent Architecture), which combines Component-Based Software Engineering and Agent-Oriented Software Engineering, drawing its inspiration from hybrid agent control architectures. The framework defines a complete construction process by enhancing a simple component-based framework with reasoning and self-awareness capabilities through a standardized interface. The capabilities of the resulting framework are demonstrated through its application to a non-trivial Multi Agent System (MAS). The system in question is a pre-existing Information Retrieval (IR) system that has not previously taken advantage of CBSE principles. In this paper we contrast these two systems so as to highlight the benefits of using this new hybrid approach. We also outline how component-based elements may be integrated into the Agent Factory agent-oriented application framework.
description: In Proceedings of the 8th International Conference on Autonomous Agents and Multi-Agent Systems (AAMAS '09), Budapest, Hungary, 2009
Doctoral thesis recital (piano)
Creators: name: Gustafson, Kaitlin
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Piano music

description: Impromptu in A-flat ; Impromptu in G-flat / Schubert -- Ballade no. 2 in A minor / Chopin -- Miroirs. 3, Une barque sur l'océan ; Miroirs. 4, Alborada del gracioso / Ravel -- Rhapsody in blue / Gershwin
Solving local constraint conditions in slave particle theory
Creators: name: Luo, Xi
name: Liu, Jianqiao
name: Yu, Yue
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: With the Becchi-Rouet-Stora-Tyutin (BRST) quantization of gauge theory, we solve the long-standing difficult problem of the local constraint conditions, i.e., the single occupation of a slave particle per site, in the slave particle theory. This difficulty is actually caused by inconsistently dealing with the local Lagrange multiplier $λ_i$ which ensures the constraint: In the Hamiltonian formalism of the theory, $λ_i$ is time-independent and commutes with the Hamiltonian while in the Lagrangian formalism, $λ_i(t)$ becomes time-dependent and plays a role of gauge field. This implies that the redundant degrees of freedom of $λ_i(t)$ are introduced and must be removed by the additional constraint, the gauge fixing condition $\partial_t λ_i(t)=0$. In literature, this gauge fixing condition was missed. We add this gauge fixing condition and use the BRST quantization of gauge theory for Dirac's first-class constraints in the slave particle theory. This gauge fixing condition endows $λ_i(t)$ with dynamics and leads to important physical results. As an example, we study the Hubbard model at half-filling and find that the spinon is gapped in the weak $U$ and the system is indeed a conventional metal, which resolves the paradox that the weak coupling state is a superconductor in the previous slave boson mean field theory. For the $t$-$J$ model, we find that the dynamic effect of $λ_i(t)$ substantially suppresses the $d$-wave pairing gap and then the superconducting critical temperature may be lowered at least a factor of one-fifth of the mean field value which is of the order of 1000 K. The renormalized $T_c$ is then close to that in cuprates.
description: 9 pages, revised version, Commun. Theor. Phys. in press
MPEC 2024-R319 : 2024 RA16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RA16

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Comparing the spectrum of Schrödinger operators on quantum graphs
Creators: name: Bifulco, Patrizio
name: Kerner, Joachim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 34L05, 81Q35, 34L15, 34L20

description: We study Schrödinger operators on compact finite metric graphs subject to $δ$-coupling and standard boundary conditions. We compare the $n$-th eigenvalues of those self-adjoint realizations and derive an asymptotic result for the mean value of deviations. By doing this, we generalize recent results from Rudnick et al. obtained for domains in $\mathbb{R}^2$ to the setting of quantum graphs. This also leads to a generalization of related results previously and independently obtained in [arXiv:2212.09143] and [arXiv:2212.12531] for metric graphs. In addition, based on our main result, we introduce some notions of circumference for a (quantum) graph which might prove useful in the future.
description: 10 pages
Blue-Cloud Poster: Your Open Science platform for collaborative marine research
Creators: name: Schaap, Dick
name: Drago, Federico
name: Pagano, Pasquale
name: Assante, Massimiliano
Publisher: name: Zenodo
Year: 2022

description: The H2020 project Blue-Cloud is developing the thematic EOSC for ocean science, through a collaborative virtual environment to enhance FAIR and Open Science. Blue-Cloud federated leading European marine Research Infrastructures and e-Infrastructures, allowing researchers to combine, reuse, and share quality data across disciplines and countries with their existing MarineID account. The project has developed three main assets: The Blue-Cloud Data Discovery and Access Service (DD&AS) facilitates access to 10+ million multi-disciplinary datasets. The DD&AS functions as a broker both for metadata and for data access, interacting with web services and APIs from each of the Blue Data Infrastructures federated in Blue-Cloud. This way, it enables users to discover first at the collection level which infrastructures might have data sets interesting for their use case, and next, to identify and download relevant data sets at granule level from those selected infrastructures, by means of a common interface. The Blue-Cloud Virtual Research Environment (VRE) enhances collaborative research. Services include Data Analytics (Data Miner, Software and Algorithms Importer (SAI), RStudio, JupyterHub), facilitating to build and run analytical pipelines, Spatial Data Infrastructure to store, discover, access, and manage vectorial and raster georeferenced datasets, and services for provenance, documenting, and either sharing with selected colleagues or make available online any generated product (e.g. analytical methods, workflows, data products, publications, notebooks). The VRE is also accessible through the EOSC federated login. This innovation potential is explored by a series of domain-specific Virtual Labs developed by five teams of experts, addressing societal challenges related to biodiversity, genomics, marine environment, fisheries, and aquaculture. These assets, including specific services developed within the VLabs, are also available via the EOSC Marketplace. The poster highlights key services developed within the Blue-Cloud technical framework and their potential impact on marine research, ultimately promoting a sustainable and data-driven ocean management. This poster was first presented at EGI Conference 2022.
Large Language Models are Not Yet Human-Level Evaluators for Abstractive Summarization
Creators: name: Shen, Chenhui
name: Cheng, Liying
name: Nguyen, Xuan-Phi
name: You, Yang
name: Bing, Lidong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: With the recent undeniable advancement in reasoning abilities in large language models (LLMs) like ChatGPT and GPT-4, there is a growing trend for using LLMs on various tasks. One area where LLMs can be employed is as an alternative evaluation metric for complex generative tasks, which generally demands expensive human judges to complement the traditional automatic metrics for various evaluation dimensions such as fluency and consistency. In this work, we conduct extensive analysis to investigate the stability and reliability of LLMs as automatic evaluators for abstractive summarization. We found that while ChatGPT and GPT-4 outperform the commonly used automatic metrics, they are not ready as human replacements due to significant limitations. That is, LLM evaluators rate each candidate system inconsistently and are dimension-dependent. They also struggle to compare candidates with close performance and become more unreliable with higher-quality summaries by obtaining a lower correlation with humans. In other words, with better abstractive summarization systems being introduced at a fast pace, LLMs may result in misleading and unreliable evaluations.
description: 19 pages, 5 figures
Min-max piecewise constant optimal control for multi-model linear systems
Creators: name: Miranda, Félix A.
name: Castaños, Fernando
name: Poznyak, Alexander
Publisher: name: arXiv
Year: 2014
Subjects: subject: Systems and Control (eess.SY)
subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics
subject: 49J15, 49N05, 93C55, 49K35

description: The present work addresses a finite-horizon linear-quadratic optimal control problem for uncertain systems driven by piecewise constant controls. The precise values of the system parameters are unknown, but assumed to belong to a finite set (i.e., there exist only finitely many possible models for the plant). Uncertainty is dealt with using a min-max approach (i.e., we seek the best control for the worst possible plant). The optimal control is derived using a multi-model version of Lagrange's multipliers method, which specifies the control in terms of a discrete-time Riccati equation and an optimization problem over a simplex. A numerical algorithm for computing the optimal control is proposed and tested by simulation.
description: 20 pages, 8 figures. Submitted to IMA Journal of Mathematical Control and Applications
PULSE: The Palomar Ultraviolet Laser for the Study of Exoplanets
Creators: name: Baranec, Christoph
name: Dekany, Richard G.
name: Burruss, Rick S.
name: Bowler, Brendan P.
name: van Dam, Marcos
name: Riddle, Reed
name: Shelton, J. Christopher
name: Truong, Tuan
name: Roberts, Jennifer
name: Milburn, Jennifer
name: Tesch, Jonathan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Palomar Ultraviolet Laser for the Study of Exoplanets (PULSE) will dramatically expand the science reach of PALM-3000, the facility high-contrast extreme adaptive optics system on the 5-meter Hale Telescope. By using an ultraviolet laser to measure the dominant high spatial and temporal order turbulence near the telescope aperture, one can increase the limiting natural guide star magnitude for exquisite correction from mV < 10 to mV < 16. Providing the highest near-infrared Strehl ratios from any large telescope laser adaptive optics system, PULSE uniquely enables spectroscopy of low-mass and more distant young exoplanet systems, essential to formulating a complete picture of exoplanet populations.
description: 15 pages, 7 figures and 2 tables
Resistive switching in ultra-thin La0.7Sr0.3MnO3 / SrRuO3 superlattices
Creators: name: Jammalamadaka, S. Narayana
name: Vanacken, Johan
name: Moshchalkov, V. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Superlattices may play an important role in next generation electronic and spintronic devices if the key-challenge of the reading and writing data can be solved. This challenge emerges from the coupling of low dimensional individual layers with macroscopic world. Here we report the study of the resistive switching characteristics of a of hybrid structure made out of a superlattice with ultrathin layers of two ferromagnetic metallic oxides, La0.7Sr0.3MnO3 (LSMO) and SrRuO3 (SRO). Bipolar resistive switching memory effects are measured on these LSMO/SRO superlattices, and the observed switching is explainable by ohmic and space charge-limited conduction laws. It is evident from the endurance characteristics that the on/off memory window of the cell is greater than 14, which indicates that this cell can reliably distinguish the stored information between high and low resistance states. The findings may pave a way to the construction of devices based on nonvolatile resistive memory effects.
System-environment dynamics of GHZ-like states in noninertial frames
Creators: name: Zhang, Tinggui
name: Yang, Hong
name: Fei, Shao-Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Quantum coherence, quantum entanglement and quantum nonlocality are important resources in quantum information precessing. However, decoherence happens when a quantum system interacts with the external environments. We study the dynamical evolution of the three-qubit GHZ-like states in non-inertial frame when one and/or two qubits undergo decoherence. Under the amplitude damping channel we show that the quantum decoherence and the Unruh effect may have quite different influences on the initial state. Moreover, the genuine tripartite entanglement and the quantum coherence may suffer sudden death during the evolution. The quantum coherence is most resistent to the quantum decoherence and the Unruh effect, then comes the quantum entanglement and the quantum nonlocality which is most fragile among the three. The results provide a new research perspective for relativistic quantum informatics.
description: 9 pages,7 figures
Genetic-tunneling driven energy optimizer for spin systems
Creators: name: Xu, Qichen
name: Shen, Zhuanglin
name: Pereiro, Manuel
name: Herman, Pawel
name: Eriksson, Olle
name: Delin, Anna
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A long-standing and difficult problem in, e.g., condensed matter physics is how to find the ground state of a complex many-body system where the potential energy surface has a large number of local minima. Spin systems containing complex and/or topological textures, for example spin spirals or magnetic skyrmions, are prime examples of such systems. We propose here a genetic-tunneling-driven variance-controlled optimization approach, and apply it to two-dimensional magnetic skyrmionic systems. The approach combines a local energy-minimizer backend and a metaheuristic global search frontend. The algorithm is naturally concurrent, resulting in short user execution time. We find that the method performs significantly better than simulated annealing (SA). Specifically, we demonstrate that for the Pd/Fe/Ir(111) system, our method correctly and efficiently identifies the experimentally observed spin spiral, skyrmion lattice and ferromagnetic ground states as a function of external magnetic field. To our knowledge, no other optimization method has until now succeeded in doing this. We envision that our findings will pave the way for evolutionary computing in mapping out phase diagrams for spin systems in general.
Laboratory Optical Spectroscopy of Thiophenoxy Radical and Its Profile Simulation as a Diffuse Interstellar Band Based on Rotational Distribution by Radiation and Collisions
Creators: name: Araki, Mitsunori
name: Niwayama, Kei
name: Tsukiyama, Koichi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The gas-phase optical absorption spectrum of a thiophenoxy radical (C6H5S), a diffuse interstellar band (DIB) candidate molecule, was observed in the discharge of thiophenol using a cavity ringdown spectrometer. The ground-state rotational constants of the thiophenoxy radical were theoretically calculated, and the excited-state rotational constants were determined from the observed rotational profile. The rotational profile of a near prolate molecule having a C2v symmetry was simulated on the basis of a rotational distribution model by radiation and collisions. Although the simulated profile did not agree with the observed DIBs, the upper limit of the column density for the thiophenoxy radical in the diffuse clouds toward HD 204827 was evaluated. The profile simulation indicates that rotational distribution by radiation and collisions is important to reproduce a rotational profile for a DIB candidate and that the near prolate C2v molecule is a possible candidate for DIB with a band width variation dependent on line-of-sight.
description: 15 pages, 5 figures
Quantum Atomic Matter Near Two-Dimensional Materials in Microgravity
Creators: name: Del Maestro, Adrian
name: Kim, Sang Wook
name: Bigelow, Nicholas P.
name: Thompson, Robert J.
name: Kotov, Valeri N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Space Physics (physics.space-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Novel two-dimensional (2D) atomically flat materials, such as graphene and transition-metal dichalcogenides, exhibit unconventional Dirac electronic spectra. We propose to effectively engineer their interactions with cold atoms in microgravity, leading to a synergy between complex electronic and atomic collective quantum phases and phenomena. Dirac materials are susceptible to manipulation and quantum engineering via changes in their electronic properties by application of strain, doping with carriers, adjustment of their dielectric environment, etc. Consequently the interaction of atoms with such materials, namely the van der Waals / Casimir-Polder interaction, can be effectively manipulated, leading to the potential observation of physical effects such as Quantum Reflection off atomically thin materials and confined Bose-Einstein Condensate (BEC) frequency shifts.
description: 11 pages, 3 figures; discussion and references added
Spin gapless semiconducting behavior in equiatomic quaternary CoFeMnSi Heusler alloy
Creators: name: Bainsla, Lakhan
name: Mallick, A. I.
name: Raja, M. Manivel
name: Nigam, A. K.
name: Varaprasad, B. S. D. Ch. S.
name: Takahashi, Y. K.
name: Alam, Aftab
name: Suresh, K. G.
name: Hono, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin gapless semiconductors (SGS) form a new class of magnetic semiconductors, which has a band gap for one spin sub band and zero band gap for the other, and thus are useful for tunable spin transport based applications. In this paper, we report the first experimental evidence for spin gapless semiconducting behavior in CoFeMnSi Heusler alloy. Such a behavior is also confirmed by first principles band structure calculations. The most stable configuration obtained by the theoretical calculation is verified by experiment. The alloy is found to crystallize in the cubic Heusler structure (LiMgPdSn type) with some amount of disorder and has a saturation magnetization of 3.7 Bohr's magneton/f.u.. and Curie temperature of 620 K. The saturation magnetization is found to follow the Slater-Pauling behavior, one of the prerequisites for SGS. Nearly temperature-independent carrier concentration and electrical conductivity is observed from 5 to 300 K. An anomalous Hall coefficient of 162 S/cm is obtained at 5 K. Point contact Andreev reflection data has yielded the current spin polarization value of 0.64, which is found to be robust against the structural disorder. All these properties are quite promising for the spintronic applications such as spin injection and can bridge a gap between the contrasting behavior of half-metallic ferromagnets and semiconductors.
description: 14 pages, 7 figures, regular article
Nonlinear effects of general relativity from multiscale structure
Creators: name: Korzyński, Mikołaj
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: When do the nonlinear effects of general relativity matter in astrophysical situations? They are obviously relevant for very compact sources of the gravitational field, such as neutron stars or black holes. In this paper I discuss another, less obvious situation, in which large relativistic effects may arise due to a complicated, multiscale structure of the matter distribution. I present an exact solution with an inhomogeneous energy density distribution in the form of a hierarchy of nested voids and overdensities of various sizes, extending from the homogeneity scale down to arbitrary small scales. I show that although each of the voids and overdensities seems to be very weakly relativistic, and thus easy to describe using the linearized general relativity, the solution taken as a whole lies in fact in the nonlinear regime. Its nonlinear properties are most easily seen when we compare the ADM mass of the solution and the integral of the local mass density: the difference between them, i.e. the relativistic mass deficit, can be significant provided that the inhomogeneities extend to sufficiently small scales. The non-additivity of masses implies a large backreaction effect, i.e. significant discrepancy between the averaged, large-scale effective stress-energy tensor and the naive average of the local energy density. I show that this is a general relativistic effect arising due to the inhomogeneous, multiscale structure. I also discuss the relevance of the results in cosmology and relativistic astrophysics.
description: 30 pages, 10 figures
The Massive Star Population in M101. II. Spatial Variations in the Recent Star Formation History
Creators: name: Grammer, Skyler
name: Humphreys, Roberta M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the star formation history (SFH) as a function of radius in M101 using archival HST/ACS photometry. We derive the SFH from the resolved stellar populations in five 2' wide annuli. Binning the SFH into time frames corresponding to stellar populations traced by H$α$, far ultraviolet (FUV), and near ultraviolet (NUV) emission, we find that the fraction of stellar populations young enough to contribute in H$α$ is 15%-35% in the inner regions, compared to less than 5% in the outer regions. This provides a sufficient explanation for the lack of H$α$ emission at large radii. We also model the blue to red supergiant ratio in our five annuli, examine the effects that a metallicity gradient and variable SFH have on the predicted ratios, and compare to the observed values. We find that the radial behavior of our modeled blue to red supergiant ratios is highly sensitive to both spatial variations in the SFH and metallicity. Incorporating the derived SFH into modeled ratios, we find that we are able to reproduce the observed values at large radii (low metallicity), but at small radii (high metallicity) the modeled and observed ratios are discrepant.
description: 9 pages, 11 figures; Accepted for publication to AJ
MPEC 2024-R320 : 2024 RB16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RB16

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Individual profiles in protracted phonological development across languages: introduction to the special issue
Creators: name: Stemberger, Joseph Paul
name: Bernhardt, Barbara May
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Although group studies provide necessary information about the range and frequency of phenomena in phonological development, individual profiles (case studies) can be used to describe entire phonological systems in detail. Profiles from different languages can highlight similarities and differences across languages that may be less obvious in group studies. The current issue presents profiles of children with protracted phonological development (PPD: speech sound disorders) from 16 languages (Akan, Kuwaiti Arabic, Bulgarian, Canadian English, Farsi, Canadian French, German, Greek, Icelandic, Japanese, Mandarin, Polish, European Portuguese, Slovenian, Granada Spanish, Swedish). Utilising a constraints-based nonlinear phonological framework, each profile describes a child’s strengths and needs in word structure, segments, features and their interactions and suggests an intervention plan. Where available, follow-up data from after clinical intervention are included. This introductory paper provides the theoretical background for the papers and reflects on the findings, drawing out particular themes and implications for phonological and developmental theories and clinical intervention. Read the transcript Watch the video on Vimeo ©2022 Taylor & Francis Group, LLC
Die Gläubigen mögen sich nicht von den falschen Anschauungen der Welt über die standesgemäße Keuschheit anstecken lassen
Publisher: name: Herder Korrespondenz
Year: 1970

description: Herder Korrespondenz, Bd. 12 Nr. 9 (1957): Herder Korrespondenz, Band 12, Heft 9
Impact of Human Behavior on Social Opportunistic Forwarding
Creators: name: Moreira, Waldir
name: Mendes, Paulo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The current Internet design is not capable to support communications in environments characterized by very long delays and frequent network partitions. To allow devices to communicate in such environments, delay-tolerant networking solutions have been proposed by exploiting opportunistic message forwarding, with limited expectations of end-to-end connectivity and node resources. Such solutions envision non-traditional communication scenarios, such as disaster areas and development regions. Several forwarding algorithms have been investigated, aiming to offer the best trade-off between cost (number of message replicas) and rate of successful message delivery. Among such proposals, there has been an effort to employ social similarity inferred from user mobility patterns in opportunistic routing solutions to improve forwarding. However, these research effort presents two major limitations: first, it is focused on distribution of the intercontact time over the complete network structure, ignoring the impact that human behavior has on the dynamics of the network; and second, most of the proposed solutions look at challenging networking environments where networks have low density, ignoring the potential use of delay-tolerant networking to support low cost communications in networks with higher density, such as urban scenarios. This paper presents a study of the impact that human behavior has on opportunistic forwarding. Our goal is twofold: i) to show that performance in low and high density networks can be improved by taking the dynamics of the network into account; and ii) to show that the delay-tolerant networking can be used to reduce communication costs in networks with higher density by taking the behavior of the user into account.
description: 26 pages, 9 figures, 2 tables. arXiv admin note: substantial text overlap with arXiv:1407.8342
MPEC 2024-R321 : 2024 RC16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RC16

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Inhomogeneity-Induced Time-Reversal Symmetry Breaking in Cuprate Twist-Junctions
Creators: name: Yuan, Andrew C.
name: Vituri, Yaar
name: Berg, Erez
name: Spivak, Boris
name: Kivelson, Steven A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The lowest order Josephson coupling, $J_1(θ)\cos(ϕ)$, between two d-wave superconductors with phase-difference $ϕ$ across the junction vanishes when their relative orientation is rotated by $θ=π/4$. However, in the presence of inhomogeneity, $J_{1}(\mathbf{r})$ is non-zero locally, with a sign that fluctuates in space. We show that such a random $J_1$ generates a global second-harmonic Josephson coupling, $J_2\cos(2ϕ)$, with a sign that favors $ϕ= \pm π/2$, i.e., spontaneous breaking of time reversal symmetry. The magnitude of $J_2$ is substantially enhanced if the spatial correlations of $J_1(\mathbf{r})$ extend over large distances, such as would be expected in the presence of large amplitude twist-angle angle disorder or significant local electronic nematicity. We argue that this effect likely accounts for the recent observations in twisted Josephson junctions between high temperature superconductors.
description: 5 (main text) +5 (appendix) pages, 1 (main text) +1 (appendix) figures
When liquids and fricatives outrank stops: A Kuwaiti Arabic-speaking child with Down syndrome and protracted phonological development
Creators: name: Ayyad, Hadeel Salama
name: Bernhardt, Barbara May
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Plant Biology

description: This paper describes the phonological system of a monolingual Kuwaiti Arabic-speaking 9-year-old girl with Down Syndrome (DS) as part of a special crosslinguistic issue presenting individual profiles of children with protracted phonological development within the framework of constraints-based nonlinear phonology. Her responses to a 100-word speech test were audio-recorded and transcribed narrowly by two native speakers. Analyses showed low accuracy for word shapes (CV sequences), primarily because of expected deletion patterns in initial weak syllables and clusters, but also reflecting inaccuracies in segment length. Vowel match was also relatively low. For consonants, she unexpectedly showed lower accuracy for stops than typically later-developing liquids and fricatives. This case study provides researchers and speech-language pathologists with broader information about expected and unexpected patterns in children with DS and protracted phonological development in general.
Asymptotic goodness-of-fit tests for the Palm mark distribution of stationary point processes with correlated marks
Creators: name: Heinrich, Lothar
name: Lück, Sebastian
name: Schmidt, Volker
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We consider spatially homogeneous marked point patterns in an unboundedly expanding convex sampling window. Our main objective is to identify the distribution of the typical mark by constructing an asymptotic $χ^2$-goodness-of-fit test. The corresponding test statistic is based on a natural empirical version of the Palm mark distribution and a smoothed covariance estimator which turns out to be mean square consistent. Our approach does not require independent marks and allows dependences between the mark field and the point pattern. Instead we impose a suitable $β$-mixing condition on the underlying stationary marked point process which can be checked for a number of Poisson-based models and, in particular, in the case of geostatistical marking. In order to study test performance, our test approach is applied to detect anisotropy of specific Boolean models.
description: Published in at http://dx.doi.org/10.3150/13-BEJ523 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm). arXiv admin note: substantial text overlap with arXiv:1205.5044
Η Διαδικασία Αδειοδότησης φαρμάκων σε Ευρωπαϊκό και Εθνικό επίπεδο και το ειδικό ζήτημα των γενοσήμων φαρμάκων
Creators: name: Παντσούκη, Νίκη Δήμητρα Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Άδειες Κυκλοφορίας
Γενόσημα Φάρμακα
Ευρωπαϊκό και Εθνικό Επίπεδο
Marketing Authorization
Generic Drugs
EU and National Level

description: Σκοπός της παρούσας διατριβής είναι η ανάλυση των διαδικασιών αδειοδότησης φαρμάκων σε Ευρωπαϊκό και Εθνικό Επίπεδο. Στα πρώτα μέρη θα γίνει αναφορά στα είδη των διαδικασιών που ακολουθούνται, συνεχίζοντας θα γίνει ανάλυση ως προς την ισχύς της άδειας κυκλοφορίας ενώ ιδιαίτερη έμφαση θα δοθεί στις αιτήσεις ορφανών και γενόσημων φαρμάκων.
description: The aim of this thesis is to analyze the procedures for the marketing authorisation of medicinal products at European and national level. In the first sections, there will be an analysis types of procedures that are followed will be mentioned, continuing with an analysis of the validity of the marketing authorisation, while special emphasis will be placed on orphan and generic applications.
description: Το Τμήμα Νομικής του ΑΠΘ (επισπεύδον Τμήμα), και το Τμήμα Φαρμακευτικής της Σχολής Επιστημών Υγείας του ΑΠΘ οργανώνουν και λειτουργούν από το ακ. έτος 2021-2022, Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) με τίτλο: «Φαρμακευτικό Δίκαιο: Νομοθεσία και Πράξη» σύμφωνα με τις διατάξεις της απόφασης της Συγκλήτου του ΑΠΘ (ΦΕΚ 2514/τ.Β΄/14-6-2021).