cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The SEDs, Host Galaxies and Environments of Variability Selected AGN in GOODS-S
Creators: name: Villforth, Carolin
name: Sarajedini, Vicki
name: Koekemoer, Anton
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Variability selection has been proposed as a powerful tool for identifying both low-luminosity AGN and those with unusual SEDs. However, a systematic study of sources selected in such a way has been lacking. In this paper, we present the multi-wavelength properties of the variability selected AGN in GOODS South. We demonstrate that variability selection indeed reliably identifies AGN, predominantly of low luminosity. We find contamination from stars as well as a very small sample of sources that show no sign of AGN activity, their number is consistent with the expected false positive rate. We also study the host galaxies and environments of the AGN in the sample. Disturbed host morphologies are relatively common. The host galaxies span a wide range in the level of ongoing star-formation. However, massive star-bursts are only present in the hosts of the most luminous AGN in the sample. There is no clear environmental preference for the AGN sample in general but we find that the most luminous AGN on average avoid dense regions while some low-luminosity AGN hosted by late-type galaxies are found near the centres of groups. AGN in our sample have closer nearest neighbours than the general galaxy population. We find no indications that major mergers are a dominant triggering process for the moderate to low luminosity AGN in this sample. The environments and host galaxy properties instead suggest secular processes, in particular tidal processes at first passage and minor mergers, as likely triggers for the objects studied. This study demonstrates the strength of variability selection for AGN and gives first hints at possibly triggering mechanisms for high-redshift low luminosity AGN.
description: Accepted for publication in MNRAS (missing references added in version 2)
The orbit of Aegaeon and the 7:6 Mimas-Aegaeon resonance
Creators: name: Callegari, Nelson
name: Rodríguez, Adrián
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Aegaeon (S/2008 S 1) is the last satellite discovered by the Cassini spacecraft at the end of the 2000s. Like the satellites Methone and Anthe, it is involved in mean motion resonance with the mid-sized Mimas. In this work, we give a detailed analysis of the current orbit of Aegaeon identifying the resonant, secular and long-term perturbations due to Mimas and the oblateness of Saturn, and the effects of Tethys. For this task, we perform thousands of numerical simulations of full equations of motion of ensembles of small bodies representing clones of Aegaeon. We have mapped the domain of the 7:6 Mimas-Aegaeon resonance in the phase space of the semi-major axis and eccentricity. It displays a large area dominated by regular motions associated with the 7:6 corotation resonance surrounded by chaotic layers. Aegaeon is currently located very close to the periodic orbit of the resonance, which extends up to eccentricities $\sim0.025$ centered at semi-major axis $\sim168,028$ km. We show that the current orbit of Aegaeon has an important forced component in eccentricity due to the 7:6 resonance. The orbital inclination of Aegaeon has a non-negligible forced value due to long-term perturbations of Mimas. These two forced modes explain the complex perturbed orbit of Aegaeon without requiring the co-existence of multiple resonances.
description: Published in Celestial Mechanics and Dynamical Astronomy. Due to a journal production problem, two terms have been missed in the second line of Table 1 (e_o and e_o^3)
Additional file 1 of Electroencephalography for prognostication of outcome in adults with severe herpes simplex encephalitis
Creators: name: Jeantin, Lina
name: Dupuis, Claire
name: Vellieux, Geoffroy
name: Jaquet, Pierre
name: de Montmollin, Etienne
name: Timsit, Jean-François
name: Sonneville, Romain
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology

description: Additional file 1: Figure S1. Patients flow chart. Table S1. Patients’ characteristics, according to the inclusion/exclusion in the study, and according to the testing of reactivity. Table S2. Results of the uni- and multivariable analyses for all patients (n = 214). Table S2bis. Results of the uni- and multivariable analyses for all patients, including clinical data and adjusted for sedation (n = 214). Table S3. Results of the uni- and multivariable analyses for patients under mechanical ventilation (n = 138). Table S3bis. Results of the uni- and multivariable analyses for patients under mechanical ventilation, including clinical data and adjusted for sedation (n = 138). Table S4. Complete case analysis for the whole cohort (n = 194), and among patients under mechanical ventilation (n = 122).
R. Baetens, B. Blondé (Hrsg.), Nouvelles Approches concernant la Culture de l’Habitat. New Approaches to Living Patterns. Colloque International Universite d'Anvers 1989,, 1989
Creators: name: Hess, Christel
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 20, Nr. 2 (1993)
Genus one Birkhoff sections for geodesic flows
Creators: name: Dehornoy, Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We prove that the geodesic flow on the unit tangent bundle to every hyperbolic 2-orbifold that is a sphere with 3 or 4 singular points admits explicit genus one Birkhoff sections, and we determine the associated first return maps.
description: 19 pages, 14 figures
AN ANALYSIS ON GREEN PURCHASING BEHAVIOR WITHIN THE FRAMEWORK OF THE THEORY OF PLANNED BEHAVIOR
Creators: name: ÖZTUNÇ, Müge
name: YAPRAK, Yasemin
Publisher: name: Zenodo
Year: 2023

description: In recent times, heightened consumer environmental consciousness has underscored the significance of sustainability, permeating various sectors. The fashion industry, in particular, has witnessed the impact of this paradigm shift. The advent of "fast fashion" has prompted consumers to exhibit more discerning purchasing behavior when engaging with brand products. Consequently, major global brands operating in the fast fashion sector have progressively introduced green product categories to cater to the demands of environmentally conscious consumers, including those in the Turkish market. This study focuses on the analysis of data derived from an online survey conducted among 342 H&M users between the ages of 18 and 35. The survey specifically explores the brand H&M and employs a model to investigate the relationships among key constructs. The model encompasses three primary factors: "environmental concerns," which gauges consumers' awareness of environmental issues, "subjective norms," which encompasses individuals' moral standards and obligations to behave in a manner aligned with sustainability; and "perceived values," which evaluates consumers' perspectives on the worth of a product based on their assessment of its utility. These factors are examined within the context of the theory of planned behavior (TPB), which posits their influence on purchase attitudes and behaviors. Confirmatory factor analysis was utilized to assess the constructed model's validity and test the hypothesized relationships, using SEM- Path Analysis. The findings of the analysis reveal that there was no statistically significant relationship found between perceived value and purchase behavior. However, a positive association was observed between perceived value and purchase attitude, as well as between purchase attitude and purchase behavior, specifically in the context of green purchasing behavior.
Revisiting D0-D0bar mixing using U-spin
Creators: name: Gronau, Michael
name: Rosner, Jonathan L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We prove that $D^0$-$\bar D^0$ mixing in the standard model occurs only at second order in U-spin breaking. The U-spin subgroup of SU(3) is found to be a powerful tool for analyzing the cancellation of intermediate-state contributions to the $D^0$--$\od^0$ mixing parameter $y = ΔΓ/(2 Γ)$. Cancellations due to states {\it within a single U-spin triplet} are shown to be valid to first order in U-spin breaking. Illustrations are given for triplets consisting of (a) pairs of charged pions and kaons; (b) pairs of neutral pseudoscalar members of the meson octet; (c) charged vector-pseudoscalar pairs, and (d) states of four charged kaons and pions.
description: corrected fonts for {\cal B}
Die Fortführung der Ausgrabung von Burganlagen auf dem Weinberg in Hitzacker (Elbe) im Jahre 1973
Creators: name: Wachter, Berndt
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 43 (1974): Nachrichten aus Niedersachsens Urgeschichte
On the Markov Chain Tree Theorem in the Max Algebra
Creators: name: Gursoy, Buket Benek
name: Kirkland, Steve
name: Mason, Oliver
name: Sergeev, Sergei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 60J10, 68R10, 15B51, 05C05, 15A80, 91B06, 91B12

description: The Markov Chain Tree Theorem is extended to the max algebra and possible applications to ranking problems are discussed.
description: 17 pages
Optical solitons in $\mathcal{PT}$-symmetric nonlinear couplers with gain and loss
Creators: name: Alexeeva, N. V.
name: Barashenkov, I. V.
name: Sukhorukov, Andrey A.
name: Kivshar, Yuri S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study spatial and temporal solitons in the $\mathcal{PT}$ symmetric coupler with gain in one waveguide and loss in the other. Stability properties of the high- and low-frequency solitons are found to be completely determined by a single combination of the soliton's amplitude and the gain/loss coefficient of the waveguides. The unstable perturbations of the high-frequency soliton break the symmetry between its active and lossy components which results in a blowup of the soliton or a formation of a long-lived breather state. The unstable perturbations of the low-frequency soliton separate its two components in space blocking the power drainage of the active component and cutting the power supply to the lossy one. Eventually this also leads to the blowup or breathing.
description: 14 pages, 11 figures
Eine mehrperiodige Siedlungsstelle in Groß-Denkte, Kr. Wolfenbüttel
Creators: name: Busch, Ralf
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 43 (1974): Nachrichten aus Niedersachsens Urgeschichte
Custom Memory Design for Logic-in-Memory: Drawbacks and Improvements over Conventional Memories
Creators: name: Ottati, Fabrizio
name: Turvani, Giovanna
name: Vacca, Marco
name: Masera, Guido
Publisher: name: arXiv
Year: 2023
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: The speed of modern digital systems is severely limited by memory latency (the ``Memory Wall'' problem). Data exchange between Logic and Memory is also responsible for a large part of the system energy consumption. Logic--In--Memory (LiM) represents an attractive solution to this problem. By performing part of the computations directly inside the memory the system speed can be improved while reducing its energy consumption. LiM solutions that offer the major boost in performance are based on the modification of the memory cell. However, what is the cost of such modifications? How do these impact the memory array performance? In this work, this question is addressed by analysing a LiM memory array implementing an algorithm for the maximum/minimum value computation. The memory array is designed at physical level using the FreePDK $\SI{45}{\nano\meter}$ CMOS process, with three memory cell variants, and its performance is compared to SRAM and CAM memories. Results highlight that read and write operations performance is worsened but in--memory operations result to be very efficient: a 55.26\% reduction in the energy--delay product is measured for the AND operation with respect to the SRAM read one; therefore, the LiM approach represents a very promising solution for low--density and high--performance memories.
Disordered two-dimensional electron systems with chiral symmetry
Creators: name: Markos, P.
name: Schweitzer, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We review the results of our recent numerical investigations on the electronic properties of disordered two dimensional systems with chiral unitary, chiral orthogonal, and chiral symplectic symmetry. Of particular interest is the behavior of the density of states and the logarithmic scaling of the smallest Lyapunov exponents in the vicinity of the chiral quantum critical point in the band center at E=0. The observed peaks or depressions in the density of states, the distribution of the critical conductances, and the possible non-universality of the critical exponents for certain chiral unitary models are discussed.
Diode laser spectroscopy of methyl iodide at 850 nm
Creators: name: Lucchesini, Alessandro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Using the Tunable Diode Laser Absorption Spectroscopy (TDLAS) 82 CH$_3$I ro-vibrational overtone absorption were detected for the first time between 11660 and 11840 cm$^{-1}$ (844 -- 857 nm), with strengths estimated to be around $10^{-27}$ -- 10$^{-26}$ cm/molecule. The lines have been measured utilizing commercial heterostructure F-P type diode lasers, multipass cells and the wavelength modulation spectroscopy with second harmonic detection technique. A high modulation amplitude approach was adopted for the analysis of the line shapes. Self-broadening coefficients have been obtained for two lines.
description: 6 pages, 4 figures
Protostars, multiplicity, and disk evolution in the Corona Australis region: A Herschel Gould Belt Study
Creators: name: Sicilia-Aguilar, Aurora
name: Henning, Thomas
name: Linz, Hendrik
name: Andre, Philippe
name: Stutz, Amy
name: Eiroa, Carlos
name: White, Glenn J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The CrA region and the Coronet cluster form a nearby (138 pc), young (1-2 Myr) star-forming region hosting a moderate population of YSO. We present Herschel PACS photometry at 100 and 160 micron, obtained as part of the Herschel Gould Belt Survey. The Herschel maps reveal the cluster members with high sensitivity and high dynamic range. Many of the cluster members are detected, including some embedded, very low-mass objects, several protostars, and substantial emission from the surrounding cloud. The Herschel data provide sufficient spatial resolution to detect small-scale details, such as bright filaments around the IRS5 protostar complex and a bubble-shaped rim associated with the Class I object IRS2. The disks around the Class II objects display a wide range of mid- and far-IR excesses consistent with different disk structures. We have modeled the disks using the RADMC radiative transfer code, finding an interesting mixture of objects for a young and presumably coeval cluster. Some of them are consistent with flared, massive, relatively primordial disks (SCrA, TCrA). Others display significant evidence for inside-out evolution, consistent with the presence of inner holes/gaps (G-85, G-87). Finally, we find disks with a dramatic small dust depletion (G-1, HBC677) that, in some cases, could be related to truncation or to the presence of large gaps in a flared disk (CrA-159). The derived masses for the disks around the low-mass stars are found to be below the typical values in Taurus, in agreement with previous Spitzer observations. Given the high degree of multiplicity and interactions observed among the protostars in the region, the diversity of disks may be a consequence of the early star formation history, which should also be taken into account when studying the disk properties in similar sparsely populated clusters.
description: 26 pages, accepted by A&A
Adsorption tuning of polarity and magnetism in AgCr2S4 monolayer
Creators: name: Li, Ranran
name: Wang, Yu
name: Ding, Ning
name: Dong, Shuai
name: An, Ming
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: As a recent successfully exfoliated non van der Waals layered material, AgCrS2 has received a lot of attentions. Motivated by its structure related magnetic and ferroelectric behavior, a theoretical study on its exfoliated monolayer AgCr2S4 has been carried out in the present work. Based on density functional theory, the ground state and magnetic order of monolayer AgCr2S4 have been determined. The centrosymmetry emerges upon two-dimensional confinement and thus eliminates the bulk polarity. Moreover, two-dimensional ferromagnetism appears in the CrS2 layer of AgCr2S4 and can persist up to room temperature. The surface adsorption has also been taken into consideration, which shows a nonmonotonic effect on the ionic conductivity through ion displacement of the interlayer Ag, but has little impact on the layered magnetic structure.
description: 9 pages, 5 figures, 2 tables
A new mass value for 7Li
Creators: name: Nagy, Sz.
name: Fritioff, T.
name: Suhonen, M.
name: Schuch, R.
name: Blaum, K.
name: Björkhage, M.
name: Bergström, I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A high-accuracy mass measurement of 7Li was performed with the Smiletrap Penning trap mass spectrometer via a cyclotron frequency comparison of Li3+ and H2+. A new atomic mass value of 7Li has been determined to be 7.016,003,425,6,(45)u with a relative uncertainty of 0.63 ppb. It has uncovered a discrepancy as large as 14 sigma (1.1 micro u) deviation relative to the literature value given in the Atomic-Mass Evaluation AME 2003. The importance of the improved and revised 7Li mass value, for calibration purposes in nuclear-charge radii and atomic mass measurements of the neutron halos 9Li and 11Li, is discussed.
description: 4 pages, 3 figures
Miscentring in Galaxy Clusters: Dark Matter to Brightest Cluster Galaxy Offsets in 10,000 SDSS Clusters
Creators: name: Zitrin, Adi
name: Bartelmann, Matthias
name: Umetsu, Keiichi
name: Oguri, Masamune
name: Broadhurst, Tom
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We characterise the typical offset between the Dark Matter (DM) projected centre and the Brightest Cluster Galaxy (BCG) in 10,000 SDSS clusters. To place constraints on the centre of DM, we use an automated strong-lensing analysis, mass-modelling technique which is based on the well-tested assumption that light traces mass. The cluster galaxies are modelled with a steep power-law, and the DM component is obtained by smoothing the galaxy distribution fitting a low-order 2D polynomial (via spline interpolation), while probing a whole range of polynomial degrees and galaxy power laws. We find that the offsets between the BCG and the peak of the smoothed light map representing the DM, Δ, are distributed equally around zero with no preferred direction, and are well described by a log-normal distribution with =-1.895^{+0.003}_{-0.004}, and σ=0.501\pm0.004 (95% confidence levels), or =0.564\pm0.005, and σ=0.475\pm0.007. Some of the offsets originate in prior misidentifications of the BCG or other bright cluster members by the cluster finding algorithm, whose level we make an additional effort to assess, finding that ~10% of the clusters in the probed catalogue are likely to be misidentified, contributing to higher-end offsets in general agreement with previous studies. Our results constitute the first statistically-significant high-resolution distributions of DM-to-BCG offsets obtained in an observational analysis, and importantly show that there exists such a typical non-zero offset in the probed catalogue. The offsets show a weak positive correlation with redshift, so that higher separations are generally found for higher-z clusters in agreement with the hierarchical growth of structure, which in turn could help characterise the merger, relaxation and evolution history of clusters, in future studies. [ABRIDGED]
description: 15 pages, 11 figures; MNRAS in press; V3 includes minor text updates
Global Optimization methods for Gravitational Lens Systems with Regularized Sources
Creators: name: Rogers, Adam
name: Fiege, Jason D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Several approaches exist to model gravitational lens systems. In this study, we apply global optimization methods to find the optimal set of lens parameters using a genetic algorithm. We treat the full optimization procedure as a two-step process: an analytical description of the source plane intensity distribution is used to find an initial approximation to the optimal lens parameters. The second stage of the optimization uses a pixelated source plane with the semilinear method to determine an optimal source. Regularization is handled by means of an iterative method and the generalized cross validation (GCV) and unbiased predictive risk estimator (UPRE) functions that are commonly used in standard image deconvolution problems. This approach simultaneously estimates the optimal regularization parameter and the number of degrees of freedom in the source. Using the GCV and UPRE functions we are able to justify an estimation of the number of source degrees of freedom found in previous work. We test our approach by applying our code to a subset of the lens systems included in the SLACS survey.
Transit Timing Variations in exoplanetary systems through the ExoClock Project
Creators: name: Dionysios, Gakis
name: Poultourtzidis Efthymios
name: Sidiropoulos Chrysostomos
name: Pantelidou Georgia
name: Kokori Anastasia
name: Tsiaras Angelos
Publisher: name: Zenodo
Year: 2023

description: The ExoClock project is a platform that monitors the ephemerides of transiting exoplanets, with the purpose to provide a verified list of them for the upcoming ESA's M4 mission, Ariel, scheduled for launched in 2029. The project also offers a useful service for the wider working community, since it can give valuable information about the best timings for future observations. To this end, a large dataset of individual transits has been examined, including observations with space telescopes (Kepler, K2, TESS), ground-based observations and mid-time values from literature. This poster will emphasize on the latter aspect and will discuss the opportunities provided by ExoClock to utilize the project’s database for further research. More specifically, we search for non-linear patterns in planetary ephemerides and combine them with other physical properties (like possible resonances) for a number of exoplanetary systems. A fundamental Transit Timing Variations (TTVs) analysis of those has been performed and the results will be presented. These results include the estimation of the non-linear terms along with the underlying uncertainties.
Implementing arbitrary quantum operations via quantum walks on a cycle graph
Creators: name: Lin, Jia-Yi
name: Li, Xin-Yu
name: Shao, Yu-Hao
name: Wang, Wei
name: Wu, Shengjun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum circuit model is the most commonly used model for implementing quantum computers and quantum neural networks whose essential tasks are to realize certain unitary operations. The circuit model usually implements a desired unitary operation by a sequence of single-qubit and two-qubit unitary gates from a universal set. Although this certainly facilitates the experimentalists as they only need to prepare several different kinds of universal gates, the number of gates required to implement an arbitrary desired unitary operation is usually large. Hence the efficiency in terms of the circuit depth or running time is not guaranteed. Here we propose an alternative approach; we use a simple discrete-time quantum walk (DTQW) on a cycle graph to model an arbitrary unitary operation without the need to decompose it into a sequence of gates of smaller sizes. Our model is essentially a quantum neural network based on DTQW. Firstly, it is universal as we show that any unitary operation can be realized via an appropriate choice of coin operators. Secondly, our DTQW-based neural network can be updated efficiently via a learning algorithm, i.e., a modified stochastic gradient descent algorithm adapted to our network. By training this network, one can promisingly find approximations to arbitrary desired unitary operations. With an additional measurement on the output, the DTQW-based neural network can also implement general measurements described by positive-operator-valued measures (POVMs). We show its capacity in implementing arbitrary 2-outcome POVM measurements via numeric simulation. We further demonstrate that the network can be simplified and can overcome device noises during the training so that it becomes more friendly for laboratory implementations. Our work shows the capability of the DTQW-based neural network in quantum computation and its potential in laboratory implementations.
description: This a duplicated upload by mistake. This article is already uploaded as 2210.14450
Dynamic Network Cartography
Creators: name: Mateos, Gonzalo
name: Rajawat, Ketan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Information Theory (cs.IT)
subject: Multiagent Systems (cs.MA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Communication networks have evolved from specialized, research and tactical transmission systems to large-scale and highly complex interconnections of intelligent devices, increasingly becoming more commercial, consumer-oriented, and heterogeneous. Propelled by emergent social networking services and high-definition streaming platforms, network traffic has grown explosively thanks to the advances in processing speed and storage capacity of state-of-the-art communication technologies. As "netizens" demand a seamless networking experience that entails not only higher speeds, but also resilience and robustness to failures and malicious cyber-attacks, ample opportunities for signal processing (SP) research arise. The vision is for ubiquitous smart network devices to enable data-driven statistical learning algorithms for distributed, robust, and online network operation and management, adaptable to the dynamically-evolving network landscape with minimal need for human intervention. The present paper aims at delineating the analytical background and the relevance of SP tools to dynamic network monitoring, introducing the SP readership to the concept of dynamic network cartography -- a framework to construct maps of the dynamic network state in an efficient and scalable manner tailored to large-scale heterogeneous networks.
description: To appear in the IEEE Signal Processing Magazine - Special Issue on Adaptation and Learning over Complex Networks
Aircraft Cabin Ventilation in the Corona Pandemic – Legend and Truth
Creators: name: Scholz, Dieter
Publisher: name: Zenodo
Year: 2021
Subjects: aircraft
passenger
cabin
ventilation
corona
virus
pandemie
COVID-19
filter
HEPA
air
aerolectures
aerolectures2021
Prof. Scholz @ Zenodo

description: Purpose– Reach awareness that the aviation industry (manufacturers, airlines, organizations) is lying about cabin ventilation on board of passenger aircraft. Approach – Industry information published during the corona pandemic is collected from the Internet and set against scientific evidence. ---
Findings – HEPA filters in aircraft do not produce cabin air "as clean as [in] a hospital operating theatre". Viruses and other substances like CO2 are generated in the cabin and need to be washed out. Their concentration follows from their source strength and the ventilation air flow rate. Aircraft cabin air is not "fully renewed in 2 to 3 minutes". It takes several such air changes to reach 1% of the initial concentration. The air change rate is not even relevant for the concentration of e.g. viruses or CO2 in the cabin. The "air flow in the cabin" is not "only flow from top to bottom". The air is mixed within several rows and beyond. ---
Research limitations – Neither the industry campaign nor the literature on (aircraft cabin) ventilation is fully explored. Only examples are given to illustrate how the aviation industry deceived politics and the public for their economic advantage. ---
Practical implications – Learning from the past to be prepared for similar manipulation in the future. Importance to question any given information – also this one. ---
Social implications – The discussion opens up the topic beyond aviation expert circles. ---
Originality – Not much comparable information is given by other authors.
description: Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures.de
Features of randomized electric-field assisted domain inversion in lithium tantalate
Creators: name: Stivala, Salvatore
name: Buccheri, Fabrizio
name: Curcio, Luciano
name: Oliveri, Roberto L.
name: Busacca, Alessandro C.
name: Assanto, Gaetano
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on bulk and guided-wave second-harmonic generation via random Quasi-Phase-Matching in Lithium Tantalate. By acquiring the far-field profiles at several wavelengths, we extract statistical information on the distribution of the quadratic nonlinearity as well as its average period, both at the surface and in the bulk of the sample. By investigating the distribution in the two regions we demonstrate a non-invasive approach to the study of poling dynamics.
On Holographic Entanglement Entropy of Charged Matter
Creators: name: Kulaxizi, Manuela
name: Parnachev, Andrei
name: Schalm, Koenraad
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study holographic entanglement entropy in the background of charged dilatonic black holes which can be viewed as holographic duals of certain finite density states of N=4 super Yang-Mills. These charged black holes are distinguished in that they have vanishing ground state entropy. The entanglement entropy for a slab experiences a second order phase transition as the thickness of the slab is varied, while the entanglement entropy for a sphere is a smooth function of the radius. This suggests that the second scale introduced by the anisotropy of the slab plays an important role in driving the phase transition. In both cases we do not observe any logarithmic violation of the area law indicative of hidden Fermi surfaces. We investigate how these results are affected by the inclusion of the Gauss-Bonnet term in the bulk gravitational action. We also observe that such addition to the bulk action does not change the logarithmic violation of the area law in the backgrounds with hyperscaling violation.
description: harvmac, 26 pages, 9 figures; v2: minor corrections
de Sitter vacua in N = 8 supergravity and slow-roll conditions
Creators: name: Dall'Agata, G.
name: Inverso, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this letter we discuss de Sitter vacua in maximal gauged supergravity in 4 dimensions. We show that, using the newly deformed theories introduced in arxiv:1209.0760, we can obtain de Sitter vacua with arbitrarily flat tachyonic directions in the SO(4,4)c models.
description: 12 pages, 5 figures. v2 references added
Stallings Graphs, Algebraic Extensions and Primitive Elements in F2
Creators: name: Parzanchevski, Ori
name: Puder, Doron
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E05, 20F65

description: This paper studies the free group of rank two from the point of view of Stallings core graphs. The first half of the paper examines primitive elements in this group, giving new and self-contained proofs for various known results about them. In particular, this includes the classification of bases of this group. The second half of the paper is devoted to constructing a counterexample to a conjecture by Miasnikov, Ventura and Weil, which seeks to characterize algebraic extensions in free groups in terms of Stallings graphs.
Generation of a time-bin Greenberger--Horne--Zeilinger state with an optical switch
Creators: name: Lo, Hsin-Pin
name: Ikuta, Takuya
name: Azuma, Koji
name: Honjo, Toshimori
name: Munro, William J.
name: Takesue, Hiroki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multipartite entanglement is a critical resource in quantum information processing that exhibits much richer phenomenon and stronger correlations than in bipartite systems. This advantage is also reflected in its multi-user applications. Although many demonstrations have used photonic polarization qubits, polarization-mode dispersion confines the transmission of photonic polarization qubits through an optical fiber. Consequently, time-bin qubits have a particularly important role to play in quantum communication systems. Here, we generate a three-photon time-bin Greenberger-Horne-Zeilinger (GHZ) state using a 2 x 2 optical switch as a time-dependent beam splitter to entangle time-bin Bell states from a spontaneous parametric down-conversion source and a weak coherent pulse. To characterize the three-photon time-bin GHZ state, we performed measurement estimation, showed a violation of the Mermin inequality, and used quantum state tomography to fully reconstruct a density matrix, which shows a state fidelity exceeding 70%. We expect that our three-photon time-bin GHZ state can be used for long-distance multi-user quantum communication.
description: 8 pages, 4 figures, 1 table
AS REGRAS DO JOGO E OS TALIBÃS TUPINIQUINS
Creators: name: Santana, José Cláudio Pavão
Publisher: name: Zenodo - Cadernos da Pena do Pavao
Year: 2023

description: Ano 09 – vol. 08 – n. 62/2021
As redes sociais estã o repletas de publicações que evocam observância às regras
constitucionais quando o assunto é o Poder Executivo – leia-se: Jair Bolsonaro.
Persistent Doppler shift oscillations observed with HINODE/EIS in the solar corona: spectroscopic signatures of Alfvenic waves and recurring upflows
Creators: name: Tian, Hui
name: McIntosh, Scott W.
name: Wang, Tongjiang
name: Ofman, Leon
name: De Pontieu, Bart
name: Innes, Davina E.
name: Peter, Hardi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Using data obtained by the EUV Imaging Spectrometer (EIS) onboard Hinode, we have per- formed a survey of obvious and persistent (without significant damping) Doppler shift oscillations in the corona. We have found mainly two types of oscillations from February to April in 2007. One type is found at loop footpoint regions, with a dominant period around 10 minutes. They are characterized by coherent behavior of all line parameters (line intensity, Doppler shift, line width and profile asymmetry), apparent blue shift and blueward asymmetry throughout almost the en- tire duration. Such oscillations are likely to be signatures of quasi-periodic upflows (small-scale jets, or coronal counterpart of type-II spicules), which may play an important role in the supply of mass and energy to the hot corona. The other type of oscillation is usually associated with the upper part of loops. They are most clearly seen in the Doppler shift of coronal lines with forma- tion temperatures between one and two million degrees. The global wavelets of these oscillations usually peak sharply around a period in the range of 3-6 minutes. No obvious profile asymmetry is found and the variation of the line width is typically very small. The intensity variation is often less than 2%. These oscillations are more likely to be signatures of kink/Alfven waves rather than flows. In a few cases there seems to be a pi/2 phase shift between the intensity and Doppler shift oscillations, which may suggest the presence of slow mode standing waves according to wave theories. However, we demonstrate that such a phase shift could also be produced by loops moving into and out of a spatial pixel as a result of Alfvenic oscillations. In this scenario, the intensity oscillations associated with Alfvenic waves are caused by loop displacement rather than density change.
description: 9 figures, accepted by ApJ
Commutator methods for the spectral analysis of uniquely ergodic dynamical systems
Creators: name: de Aldecoa, Rafael Tiedra
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37A30, 37C10, 37C40, 37D40, 58J51, 81Q10

description: We present a method, based on commutator methods, for the spectral analysis of uniquely ergodic dynamical systems. When applicable, it leads to the absolute continuity of the spectrum of the corresponding unitary operators. As an illustration, we consider time changes of horocycle flows, skew products over translations and Furstenberg transformations. For time changes of horocycle flows, we obtain absolute continuity under assumptions weaker than the ones to be found in the literature.
description: corrections and simplifications in section 4
A Simple Method To Test For Energy-Dependent Dispersion In High Energy Light Curves Of Astrophysical Sources
Creators: name: Daniel, Michael
name: de Almeida, Ulisses Barres
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a method of testing for the presence of energy dependent dispersion in transient features of a light curve. It is based on minimising the Kolmogorov distance between two cumulative event distribution functions. The unbinned and non-parametric nature of the test makes it particularly suitable for searches of statistically limited data sets and we also show that it performs well in the presence of modest energy resolutions typical of gamma-ray observations (~20%). We illustrate its potential to set constraints on quantum-gravity induced Lorentz invariance violation effects from observations by the current and future generation of ground-based gamma-ray telescopes.
description: 4 pages. To be published in High Energy Gamma-Ray Astronomy (eds. F. Aharonian, W. Hofmann, F. Rieger) the proceedings of the 5th Heidelberg international symposium on high energy gamma-ray astronomy
Gerhard Kratzsch, Der Gauwirtschaftsapparat der NSDAP. Menschenführung – Arisierung – Wehrwirtschaft im Gau Westfalen-Süd, 1989
Creators: name: Corni, Gustavo
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 20, Nr. 3 (1993)
Motional Casimir force
Creators: name: Jaekel, Marc-Thierry
name: Reynaud, Serge
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the situation where two point like mirrors are placed in the vacuum state of a scalar field in a two-dimensional spacetime. Describing the scattering upon the mirrors by transmittivity and reflectivity functions obeying unitarity, causality and high frequency transparency conditions, we compute the fluctuations of the Casimir forces exerted upon the two motionless mirrors. We use the linear response theory to derive the motional forces exerted upon one mirror when it moves or when the other one moves. We show that these forces may be resonantly enhanced at the frequencies corresponding to the cavity modes. We interpret them as the mechanical consequence of generation of squeezed fields.
description: 14 pages
Spatial separation of state- and size-selected neutral clusters
Creators: name: Trippel, Sebastian
name: Chang, Yuan-Pin
name: Stern, Stephan
name: Mullins, Terry
name: Holmegaard, Lotte
name: Küpper, Jochen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We demonstrate the spatial separation of the prototypical indole(H2O) clusters from the various species present in the supersonic expansion of mixtures of indole and water. The major molecular constituents of the resulting molecular beam are H2O, indole, indole(H2O), and indole(H2O)2. It is a priori not clear whether such floppy systems are amenable to strong manipulation using electric fields. Here, we have exploited the cold supersonic molecular beam and the electrostatic deflector to separate indole(H2O) from the other molecular species as well as the helium seed gas. The experimental results are quantitatively explained by trajectory simulations, which also demonstrate that the quantum-state selectivity of the process leads to samples of indole(H2O) in low-lying rotational states. The prepared clean samples of indole(H2O) are ideally suited for investigations of the stereodynamics of this complex system, including time-resolved half-collision and diffraction experiments of fixed-in-space clusters. Our findings clearly demonstrate that the hydrogen bonded indole(H2O) complex behaves as a rigid molecule under our experimental conditions and that it can be strongly deflected.
description: 7 pages, 5 figures
D1.2 PoliRural Framework: Concepts, Methods, Innovation
Creators: name: PoliRural
Publisher: name: Zenodo
Year: 2021
Subjects: Rural Areas
Framework
Rural Challenges
Needs Gathering
Policy Eevaluation
Modelling
Foresight

description: As it’s one of the early project deliverables, a good portion of the document is devoted to introducing the reader to the project, its overall concept and methodology. This information is intended primarily for people outside the PoliRural consortium who have not heard about the project before. The second intended audience is internal i.e. project partners, or task/work package leaders to be precise. For them, D1.2 will provide additional guidance that they can use to produce their own deliverables later in the project.
The WIRED Survey III: An Infrared Excess around the Eclipsing Post-Common Envelope Binary SDSS J030308.35+005443.7
Creators: name: Debes, John H.
name: Hoard, D. W.
name: Farihi, Jay
name: Wachter, Stefanie
name: Leisawitz, David T.
name: Cohen, Martin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the discovery with WISE of a significant infrared excess associated with the eclipsing post-common envelope binary SDSSJ 030308.35+005443.7, the first excess discovered around a non-interacting white dwarf+main sequence M dwarf binary. The spectral energy distribution of the white dwarf+M dwarf companion shows significant excess longwards of 3-microns. A T_eff of 8940K for the white dwarf is consistent with a cooling age >2 Gyr, implying that the excess may be due to a recently formed circumbinary dust disk of material that extends from the tidal truncation radius of the binary at 1.96 Rsun out to <0.8 AU, with a total mass of ~10^20 g. We also construct WISE and follow-up ground-based near-infrared light curves of the system, and find variability in the K-band that appears to be in phase with ellipsoidal variations observed in the visible. The presence of dust might be due to a) material being generated by the destruction of small rocky bodies that are being perturbed by an unseen planetary system or b) dust condensing from the companion's wind. The high inclination of this system, and the presence of dust, make it an attractive target for M dwarf transit surveys and long term photometric monitoring.
description: 20 pages, 4 figures, Accepted to ApJ
Discrete Randomness in Discrete Time Quantum Walk: Study via Stochastic Averaging
Creators: name: Ellinas, D.
name: Bracken, A. J.
name: Smyrnakis, I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The role of classical noise in quantum walks (QW) on integers is investigated in the form of discrete dichotomic random variable affecting its reshuffling matrix parametrized as a SU2)/U(1) coset element. Analysis in terms of quantum statistical moments and generating functions, derived by the completely positive trace preserving (CPTP) map governing evolution, reveals a pronounced eventual transition in walk's diffusion mode, from a quantum ballistic regime with rate O(t) to a classical diffusive regime with rate O(\surdt), when condition (strength of noise parameter)^{2}\times(number of steps)=1, is satisfied. The role of classical randomness is studied showing that the randomized QW, when treated on the stochastic average level by means of an appropriate CPTP averaging map, turns out to be equivalent to a novel quantized classical walk without randomness. This result emphasizes the dual role of quantization/randomization in the context of classical random walk.
description: Reports on Mathematical Physics, to appear
Relativity of motion in quantum vacuum
Creators: name: Jaekel, Marc-Thierry
name: Lambrecht, Astrid
name: Reynaud, Serge
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The problem of relativity of motion in quantum vacuum is addressed by considering a cavity moving in vacuum in a monodimensional space. The cavity is an open system which emits photons when it oscillates in vacuum. Qualitatively new effects like pulse shaping in the time domain and frequency conversion in the spectrum may help to discrimate motion-induced radiation from potential stray effects.
description: 8 pages, 5 figures, contribution to MG9 proceedings