cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Brownian Motion of a Macroscopic Object in a General Environment
Creators: name: Chou, Chung-Hsien
name: Hu, B. L.
name: Yu, Ting
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For the purpose of understanding the quantum behavior such as quantum decoherence, fluctuations, dissipation, entanglement and teleportation of a mesoscopic or macroscopic object interacting with a general environment, we derive here a set of exact master equations for the reduced density matrix of $N$ interacting harmonic oscillators in a heat bath with arbitrary spectral density and temperature. Two classes of problems of interest to us which these equations can be usefully applied to are that of the quantum dynamics of nanoelectromechanical oscillators and the entanglement evolution of multi-partite macroscopic states such as quantum superposition of mirrors in a high Q cavity. To address a key conceptual issue for macroscopic quantum phenomena we examine the conditions for an assumption often implicitly made in these studies to be valid, namely, that the quantum behavior of a macroscopic object in an environment can be accurately represented by only treating the dynamics of its center-of-mass variable. We also mention how these results can be used to calculate the uncertainty principle governing a macroscopic object at finite temperature.
description: 19 pages
To how many politicians should government be left?
Creators: name: Klimek, Peter
name: Hanel, Rudolf
name: Thurner, Stefan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The quality of governance of institutions, corporations and countries depends on the ability of efficient decision making within the respective boards or cabinets. Opinion formation processes within groups are size dependent. It is often argued - as now e.g. in the discussion of the future size of the European Commission - that decision making bodies of a size beyond 20 become strongly inefficient. We report empirical evidence that the performance of national governments declines with increasing membership and undergoes a qualitative change in behavior at a particular group size. We use recent UNDP, World Bank and CIA data on overall government efficacy, i.e. stability, the quality of policy formulation as well as human development indices of individual countries and relate it to the country's cabinet size. We are able to understand our findings through a simple physical model of opinion dynamics in groups.
description: main text 5 pages and 4 eps figures, appendix
Political Institutions and Government Spending Behavior: Theory and Evidence from Iran
Creators: name: Dizaji, Sajjad Faraji
name: Farzanegan, Mohammad Reza
name: Naghavi, Alireza
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: SECS-P/01 Economia politica

description: This study examines how quality of political institutions affects the distribution of government budget in Iran. We first introduce a mechanism through which this can shift government expenditure from patronage to more constructive public spending. Using impulse response functions (IRF) and variance decomposition analysis (VDC) on the basis of Vector Autoregressive (VAR) model, our results imply that a positive shock towards more democratic institutions leads to negative and statistically significant response of military spending and positive and statistically significant response of education expenditures. Our results are robust to different political institutional quality indicators, ordering of variables in the VAR and different specifications of government spending categories.
Highly Potent, Stable, and Selective Dimeric Hetarylpropylguanidine-Type Histamine H2 Receptor Agonists
Creators: name: Pockes, Steffen
name: Wifling, David
name: Keller, Max
name: Buschauer, Armin
name: Elz, Sigurd
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: G-ACYLATED IMIDAZOLYLPROPYLGUANIDINES; HIGH CONSTITUTIVE ACTIVITY; PROTEIN-COUPLED RECEPTORS; IN-VITRO PHARMACOLOGY; H-4 RECEPTOR; MOLECULAR-DYNAMICS; BINDING-SITE; SF9; SYNCHRONIZATION; ANTAGONIST;
subject: 540 Chemie
subject: 615 Pharmazie

description: On the basis of the long-known prototypic pharmacophore 3-(1H-imidazol-4-yl) propylguanidine (SK&F 91486, 2), monomeric, homodimeric, and heterodimeric bisalkylguanidine-type histamine H-2 receptor (H2R) agonists with various alkyl spacers were synthesized. Aiming at increased H2R selectivity of the ligands, the imidazol-4-yl moiety was replaced by imidazol-1-yl, 2-aminothiazol-5-yl or 2-amino-4-methylthiazol-5-yl according to a bioisosteric approach. All compounds turned out to be partial or full agonists at the h/gp/rH(2)R. The most potent analogue, the thiazole-type heterodimeric ligand 63 (UR-Po461), was a partial agonist (E-max = 88%) and 250 times more potent than histamine (pEC(50): 8.56 vs 6.16, gpH(2)R, atrium). The homodimeric structures 56 (UR-Po395) and 58 (UR-Po448) exhibited the highest hH(2)R affinities (pK(i): 7.47, 7.33) in binding studies. Dimeric amino(methyl) thiazole derivatives, such as 58, generated an increased hH(2)R selectivity compared to the monomeric analogues, e.g., 139 (UR-Po444). Although monomeric ligands showed up lower affinities and potencies at the H2R, compounds with a short alkylic side chain like 129 (UR-Po194) proved to be highly affine hH(4)R ligands.
description: zu den Nachnutzungsbedingungen: "ACS AuthorChoice - This is an open access article published under an ACS AuthorChoice License (https://pubs.acs.org/page/policy/authorchoice_termsofuse.html), which permits copying and redistribution of the article or any adaptations for non-commercial purposes
Hybrid dark energy
Creators: name: Alcaniz, J. S.
name: Silva, R.
name: Carvalho, F. C.
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Extending previous results [Phys. Rev. Lett. 97, 081301 (2006)], we explore the cosmological implications of a new quintessence scenario driven by a slow rolling homogeneous scalar field whose equation of state behaved as freezing over the entire cosmic evolution, is approaching -1 today, but will become thawing in the near future, thereby driving the Universe to an eternal deceleration. We argue that such a mixed behavior, named \emph{hybrid}, may reconcile the slight preference of current observational data for freezing potentials with the impossibility of defining observables in the String/M-theory context due to the existence of a cosmological event horizon in asymptotically de Sitter universes as, e.g., pure freezing scenarios.
description: 4 pages, 4 figures, LaTeX
Evaluating Fairness in Argument Retrieval
Creators: name: Cherumanal, Sachin Pathiyan
name: Spina, Damiano
name: Scholer, Falk
name: Croft, W. Bruce
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Existing commercial search engines often struggle to represent different perspectives of a search query. Argument retrieval systems address this limitation of search engines and provide both positive (PRO) and negative (CON) perspectives about a user's information need on a controversial topic (e.g., climate change). The effectiveness of such argument retrieval systems is typically evaluated based on topical relevance and argument quality, without taking into account the often differing number of documents shown for the argument stances (PRO or CON). Therefore, systems may retrieve relevant passages, but with a biased exposure of arguments. In this work, we analyze a range of non-stochastic fairness-aware ranking and diversity metrics to evaluate the extent to which argument stances are fairly exposed in argument retrieval systems. Using the official runs of the argument retrieval task Touché at CLEF 2020, as well as synthetic data to control the amount and order of argument stances in the rankings, we show that systems with the best effectiveness in terms of topical relevance are not necessarily the most fair or the most diverse in terms of argument stance. The relationships we found between (un)fairness and diversity metrics shed light on how to evaluate group fairness -- in addition to topical relevance -- in argument retrieval settings.
description: Accepted at CIKM 2021
Host Galaxy Bulge Predictors of Supermassive Black Hole Mass
Creators: name: Aller, M. C.
name: Richstone, D. O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A variety of host galaxy (bulge) parameters are examined in order to determine their predictive power in ascertaining the masses of the supermassive black holes (SMBH) at the centers of the galaxies. Based on a sample of 23 nearby galaxies, comprised of both elliptical galaxies and spiral/lenticular bulges, we identify a strong correlation between the bulge gravitational binding energy ($E_g$), as traced by the stellar light profile, and the SMBH mass ($M_{\bullet}$), such that $M_{\bullet} \propto E_g^{0.6}$. The scatter about the relationship indicates that this is as strong a predictor of $M_{\bullet}$ as the velocity dispersion ($σ$), for the elliptical galaxy subsample. Improved mass-to-light ratios, obtained with IFU spectroscopy and I-band photometry by the SAURON group, were used for those sample galaxies where available, resulting in an energy predictor with the same slope, but with reduced scatter. Alternative $M_{\bullet}$ predictors such as the gravitational potential and the bulge mass are also explored, but these are found to be inferior when compared with both the bulge gravitational binding energy and bulge velocity dispersion predictors, for the full galaxy sample.
description: accepted for publication in ApJ
SOP for replacing GC column of GC Q – Exactive
Creators: name: Biomarker Analytical Laboratories
Publisher: name: Zenodo
Year: 2021
Subjects: GC Q – Exactive; GC column

description: This section describes replacing GC column
description: Research Infrastructure RECETOX RI (No LM2018121) financed by the Ministry of Education, Youth and Sports, and Operational Programme Research, Development and Innovation - project CETOCOEN EXCELLENCE (No CZ.02.1.01/0.0/0.0/17_043/0009632).
Electromagnetic forces and torques in nanoparticles irradiated by a plane wave
Creators: name: de Abajo, F. J. Garcia
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Optical tweezers and optical lattices are making it possible to control small particles by means of electromagnetic forces and torques. In this context, a method is presented in this work to calculate electromagnetic forces and torques for arbitrarily-shaped objects in the presence of other objects illuminated by a plane wave. The method is based upon an expansion of the electromagnetic field in terms of multipoles around each object, which are in turn used to derive forces and torques analytically. The calculation of multipole coefficients are obtained numerically by means of the boundary element method. Results are presented for both spherical and non-spherical objects.
description: 5 papges, 2 figures
Order-alpha_s corrections to the quarkonium electromagnetic current at all orders in the heavy-quark velocity
Creators: name: Bodwin, Geoffrey T.
name: Chung, Hee Sok
name: Lee, Jungil
name: Yu, Chaehyun
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute in order alpha_s the nonrelativistic QCD (NRQCD) short-distance coefficients that match quark-antiquark operators of all orders in the heavy-quark velocity v to the electromagnetic current. We employ a new method to compute the one-loop NRQCD contribution to the matching condition. The new method uses full-QCD expressions as a starting point to obtain the NRQCD contribution, thus greatly streamlining the calculation. Our results show that, under a mild constraint on the NRQCD operator matrix elements, the NRQCD velocity expansion for the quark-antiquark-operator contributions to the electromagnetic current converges. The velocity expansion converges rapidly for approximate J/psi operator matrix elements.
description: 35 pages, minor corrections, version published in Phys. Rev. D
SOP for Evaluation, Calibration and Tune the GC Q – Exactive
Creators: name: Biomarker Analytical Laboratories
Publisher: name: Zenodo
Year: 2021
Subjects: GC Q - Exactive; Tune; Evaluation; Calibration

description: This section describes Tune, Evaluation and Calibration of GC Q - Exactive
description: Research Infrastructure RECETOX RI (No LM2018121) financed by the Ministry of Education, Youth and Sports, and Operational Programme Research, Development and Innovation - project CETOCOEN EXCELLENCE (No CZ.02.1.01/0.0/0.0/17_043/0009632).
Base pair fluctuations in helical models for nucleic acids
Creators: name: Zoli, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A statistical method is developed to estimate the maximum amplitude of the base pair fluctuations in a three dimensional mesoscopic model for nucleic acids. The base pair thermal vibrations around the helix diameter are viewed as a Brownian motion for a particle embedded in a stable helical structure. The probability to return to the initial position is computed, as a function of time, by integrating over the particle paths consistent with the physical properties of the model potential. The zero time condition for the first-passage probability defines the constraint to select the integral cutoff for various macroscopic helical conformations, obtained by tuning the twist, the bending and the slide motion between adjacent base pairs along the molecule stack. Applying the method to a short homogeneous chain at room temperature, we obtain meaningful estimates for the maximum fluctuations in the twist conformation with $\sim 10.5$ base pairs per helix turn, typical of double stranded DNA helices. Untwisting the double helix, the base pair fluctuations broaden and the integral cutoff grows. The cutoff is found to increase also in the presence of a sliding motion which shortens the helix contour length, a situation peculiar of dsRNA molecules.
description: Accepted by The Journal of Chemical Physics (2021)
An Improved Real-Time Face Recognition System at Low Resolution Based on Local Binary Pattern Histogram Algorithm and CLAHE
Creators: name: Paul, Kamal Chandra
name: Aslan, Semih
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This research presents an improved real-time face recognition system at a low resolution of 15 pixels with pose and emotion and resolution variations. We have designed our datasets named LRD200 and LRD100, which have been used for training and classification. The face detection part uses the Viola-Jones algorithm, and the face recognition part receives the face image from the face detection part to process it using the Local Binary Pattern Histogram (LBPH) algorithm with preprocessing using contrast limited adaptive histogram equalization (CLAHE) and face alignment. The face database in this system can be updated via our custom-built standalone android app and automatic restarting of the training and recognition process with an updated database. Using our proposed algorithm, a real-time face recognition accuracy of 78.40% at 15 px and 98.05% at 45 px have been achieved using the LRD200 database containing 200 images per person. With 100 images per person in the database (LRD100) the achieved accuracies are 60.60% at 15 px and 95% at 45 px respectively. A facial deflection of about 30 degrees on either side from the front face showed an average face recognition precision of 72.25% - 81.85%. This face recognition system can be employed for law enforcement purposes, where the surveillance camera captures a low-resolution image because of the distance of a person from the camera. It can also be used as a surveillance system in airports, bus stations, etc., to reduce the risk of possible criminal threats.
description: Journal, Optics and Photonics Journal
Surface band segregation and internal convection in rotating sphere densely filled with granular material: Experiments
Creators: name: Sun, Weitao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: While granular segregation in partially filled containers has been studied extensively, granular dynamics in densely filled spheres is not fully understood. Here, surface band segregation and granular convection are reported in a rotating sphere of highly compacted glass beads. Distinct from Rayleigh-Benard convection, granular convection has a butterfly-shaped structure with vortexes of alternating layers of small/large beads, which is stable and independent of the sphere size. Two concentric interfaces at the zero tangential/norm flux are discovered, which divide the sphere into three layers from the surface to the core. The law that governs the jamming dynamics in rotating spheres remains an open question.
description: 14 pages, 9 figures
On-Chip Matching Networks for Radio-Frequency Single-Electron-Transistors
Creators: name: Xue, W. W.
name: Ji, Z.
name: Davis, B.
name: Pan, Feng
name: Stettenheim, J.
name: Gilheart, T. J.
name: Rimberg, A. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this letter, we describe operation of a radio-frequency superconducting single electron transistor (RF-SSET) with an on-chip superconducting LC matching network consisting of a spiral inductor L and its capacitance to ground. The superconducting network has a lower parasitic capacitance and gives a better matching for the RF-SSET than does a commercial chip inductor. Moreover, the superconducting network has negligibly low dissipation, leading to sensitive response to changes in the RF-SSET impedance. The charge sensitivity 2.4*10^-6 e/(Hz)^1/2 in the sub-gap region and energy sensitivity of 1.9 hbar indicate that the RF-SSET is operating in the vicinity of the shot noise limit.
description: 3 pages, 3 figures, REVTeX 4. To appear in Appl. Phys. Lett
An investigation of the aggregation behavior of carnation ring spot virus using dynamic light scattering
Creators: name: Williams, Lloyd
Publisher: name: University of British Columbia
Year: 2010

description: The technique of digital autocorrelation of intensity fluctuations of scattered laser light is used to investigate the aggregation behavior of carnation ringspot virus. It is hypothesized by the author that the aggregation rate (R) is given by [See Thesis for Equation] R is measured for a range of values of the dependent experimental variables, temperature (T), and virus concentration (v₀). And the dependence of the two aggregation parameters, the temperature of aggregation (T[sub c]) and the energy of aggregation (E[sub agg]), on the experimental variables is ascertained. Also certain physical properties of the virus are measured: size, molecular weight, and diffusion coefficient. The experimental accuracy of the apparatus is determined by performing a series of experiments on a known system of Latex spheres.
Coronal Mass Ejections and the Solar Cycle Variation of the Sun's Open Flux
Creators: name: Wang, Y. -M.
name: Sheeley, N. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The strength of the radial component of the interplanetary magnetic field (IMF), which is a measure of the Sun's total open flux, is observed to vary by roughly a factor of two over the 11 yr solar cycle. Several recent studies have proposed that the Sun's open flux consists of a constant or "floor" component that dominates at sunspot minimum, and a time-varying component due to coronal mass ejections (CMEs). Here, we point out that CMEs cannot account for the large peaks in the IMF strength which occurred in 2003 and late 2014, and which coincided with peaks in the Sun's equatorial dipole moment. We also show that near-Earth interplanetary CMEs, as identified in the catalog of Richardson and Cane, contribute at most $\sim$30\% of the average radial IMF strength even during sunspot maximum. We conclude that the long-term variation of the radial IMF strength is determined mainly by the Sun's total dipole moment, with the quadrupole moment and CMEs providing an additional boost near sunspot maximum. Most of the open flux is rooted in coronal holes, whose solar cycle evolution in turn reflects that of the Sun's lowest-order multipoles.
SOP for replacing glass liner and septum of GC Q – Exactive
Creators: name: Biomarker Analytical Laboratories
Publisher: name: Zenodo
Year: 2021
Subjects: GC Q – Exactive; glass liner; septum

description: This section describes replacing glass liner and septum
description: Research Infrastructure RECETOX RI (No LM2018121) financed by the Ministry of Education, Youth and Sports, and Operational Programme Research, Development and Innovation - project CETOCOEN EXCELLENCE (No CZ.02.1.01/0.0/0.0/17_043/0009632).
Scalar mesons in weak semileptonic decays of $B_{(s)}$
Creators: name: Wang, Yu-Ming
name: Aslam, M. Jamil
name: Lu, Cai-Dian
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The transition form factors of $B_{(s)} \to S$, with $S$ denoting a scalar meson, are investigated in the light-cone sum rules approach. The numerical values are approximately twice as large as that estimated in the light-front quark model and QCD sum rules approach. Using these form factors, we present the analysis of the decay rates for $B \to a_0(1450) l \barν_l $, $B \to K^{\ast}_0(1430) l \bar{l}$, $B_s \to K^{\ast}_0(1430) l \barν_l$ and $B_s \to f_0(1500) l \bar{l}$ with $l=e, μ, τ$. The results indicate that magnitudes of $BR(\bar{B}_0 \to a_0(1450) l \barν_l)$ and $BR(B_s \to K^{\ast}_0(1430) l \barν_l)$ can arrive at the order of $10^{-4}$, which can be measured in the future experiments to clarify the inner structure of scalar mesons. It is also observed that $BR(B \to K^{\ast}_0(1430) τ^+ τ^-)$ and $BR(B_s \to f_0(1500) τ^+ τ^-)$ are an order of magnitude smaller than the corresponding channels of $e^+ e^-$ and $μ^+ μ^-$ final states due to the heavily suppressed phase space . Moreover, the longitudinal lepton polarization asymmetry for $B \to K^{\ast}_0(1430) l \bar{l}$ and $B_s \to f_0(1500) l \bar{l}$ are also investigated, whose values are close to -1 for the $e^+ e^-$ and $μ^+ μ^-$ pair except the region close to the end points.
description: 20 pages, 4 figures
A Feature Table approach to decomposing monolithic applications into microservices
Creators: name: Wei, Yuyang
name: Yu, Yijun
name: Pan, Minxue
name: Zhang, Tian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Microservice architecture refers to the use of numerous small-scale and independently deployed services, instead of encapsulating all functions into one monolith. It has been a challenge in software engineering to decompose a monolithic system into smaller parts. In this paper, we propose the Feature Table approach, a structured approach to service decomposition based on the correlation between functional features and microservices: (1) we defined the concept of {\em Feature Cards} and 12 instances of such cards; (2) we formulated {\em Decomposition Rules} to decompose monolithic applications; (3) we designed the {\em Feature Table Analysis Tool} to provide semi-automatic analysis for identification of microservices; and (4) we formulated {\em Mapping Rules} to help developers implement microservice candidates. We performed a case study on Cargo Tracking System to validate our microservice-oriented decomposition approach. Cargo Tracking System is a typical case that has been decomposed by other related methods (dataflow-driven approach, Service Cutter, and API Analysis). Through comparison with the related methods in terms of specific coupling and cohesion metrics, the results show that the proposed Feature Table approach can deliver more reasonable microservice candidates, which are feasible in implementation with semi-automatic support.
Abduction of trap invariants in parameterized systems
Creators: name: Esparza, Javier
name: Raskin, Mikhail
name: Welzel, Christoph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In a previous paper we have presented a CEGAR approach for the verification of parameterized systems with an arbitrary number of processes organized in an array or a ring. The technique is based on the iterative computation of parameterized invariants, i.e., infinite families of invariants for the infinitely many instances of the system. Safety properties are proved by checking that every global configuration of the system satisfying all parameterized invariants also satisfies the property; we have shown that this check can be reduced to the satisfiability problem for Monadic Second Order on words, which is decidable. A strong limitation of the approach is that processes can only have a fixed number of variables with a fixed finite range. In particular, they cannot use variables with range [0,N-1], where N is the number of processes, which appear in many standard distributed algorithms. In this paper, we extend our technique to this case. While conducting the check whether a safety property is inductive assuming a computed set of invariants becomes undecidable, we show how to reduce it to checking satisfiability of a first-order formula. We report on experiments showing that automatic first-order theorem provers can still perform this check for a collection of non-trivial examples. Additionally, we can give small sets of readable invariants for these checks.
description: Full version of the article In Proceedings GandALF 2021
Role of cross helicity in magnetohydrodynamic turbulence
Creators: name: Perez, Jean C
name: Boldyrev, Stanislav
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Strong incompressible three-dimensional magnetohydrodynamic turbulence is investigated by means of high resolution direct numerical simulations. The simulations show that the configuration space is characterized by regions of positive and negative cross-helicity, corresponding to highly aligned or anti-aligned velocity and magnetic field fluctuations, even when the average cross-helicity is zero. To elucidate the role of cross-helicity, the spectra and structure of turbulence are obtained in imbalanced regions where cross-helicity is non-zero. When averaged over regions of positive and negative cross-helicity, the result is consistent with the simulations of balanced turbulence. An analytical explanation for the obtained results is proposed.
description: 4 pages, 4 figures
Learning Regional Attention over Multi-resolution Deep Convolutional Features for Trademark Retrieval
Creators: name: Tursun, Osman
name: Denman, Simon
name: Sridharan, Sridha
name: Fookes, Clinton
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Large-scale trademark retrieval is an important content-based image retrieval task. A recent study shows that off-the-shelf deep features aggregated with Regional-Maximum Activation of Convolutions (R-MAC) achieve state-of-the-art results. However, R-MAC suffers in the presence of background clutter/trivial regions and scale variance, and discards important spatial information. We introduce three simple but effective modifications to R-MAC to overcome these drawbacks. First, we propose the use of both sum and max pooling to minimise the loss of spatial information. We also employ domain-specific unsupervised soft-attention to eliminate background clutter and unimportant regions. Finally, we add multi-resolution inputs to enhance the scale-invariance of R-MAC. We evaluate these three modifications on the million-scale METU dataset. Our results show that all modifications bring non-trivial improvements, and surpass previous state-of-the-art results.
Corpus de la investigación Change.org y la interacción de tuiteros con #NiUnaMenos
Creators: name: Garcés-Tabares, Alejandro
name: Medina, Manuel Javier Castrillón
Publisher: name: figshare
Year: 2021
Subjects: subject: 100504 Data Communications
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 209999 Language, Communication and Culture not elsewhere classified
subject: FOS: Languages and literature
subject: 200101 Communication Studies
subject: FOS: Media and communications
subject: 190205 Interactive Media
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 200104 Media Studies
subject: 200102 Communication Technology and Digital Media Studies
subject: 80602 Computer-Human Interaction
subject: FOS: Psychology

description: Corpus de análisis de la investigación Change.org y la interacción de tuiteros con #NiUnaMenos. Se presentan las 80 publicaciones que hicieron parte del análisis, repartidos en las 4 cuentas @ChangeorgAR con 27 tuits, @ChangeorgCo con 29 tuits, @ChangeorgLatino con 19 tuits, @Change_Mex con 5 tuits.
Materia, forma e tecniche costruttive in Terra d’Otranto. Da esperienza locale a metodologia per la conservazione
Creators: name: Galante, Stefania
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: La tesi affronta il tema delle tecniche costruttive in Terra d’Otranto in epoca moderna alla luce dell’importanza della loro conoscenza ai fini del restauro e della conservazione dei beni architettonici. L’indagine ha, infatti, inteso approfondire non solo gli aspetti tecnologici e fattuali, ma anche i valori culturali collegati al modo di produzione, all’ambiente socio-economico, alla committenza e alle competenze delle maestranze, conoscenze che  consentono di operare scelte in direzione della preservazione dei valori materiali ed immateriali del manufatto architettonico, e della riduzione al minimo degli interventi nel rispetto della sua autenticità testimoniale.
La tesi, articolata in quattro capitoli, affronta dapprima una lettura delle caratteristiche geomorfologiche del territorio, gli eventi storici e politici, e gli aspetti economici e sociali, per fornire gli strumenti di base necessari a comprendere le opere analizzate dell’area in questione; prende, poi, in esame i materiali utilizzati nella costruzione, in quanto fattori determinanti nei processi esecutivi, la loro disponibilità sul territorio, la lavorazione e la finitura, le caratteristiche dimensionali, definite sulla base del raffronto delle informazioni ricavate dalla bibliografia disponibile, dalle fonti e dai documenti, e descrive gli elementi e le particolarità costruttive caratterizzanti, nonché le relative tecniche di realizzazione. La lettura dei documenti, in particolar modo, ha consentito di acquisire nuove informazioni circa la conduzione del cantiere, le figure professionali, le pratiche di mestiere, i materiali e gli strumenti di lavoro e di produrre confronti, riguardo ai sistemi di appalto dei lavori, tra committenze, private e pubbliche, e maestranze, e le realtà geografiche più prossime alla Terra d’Otranto, in particolare Napoli e la Sicilia.
In ultimo, partendo dai risultati dell’analisi delle tecniche costruttive, propone una ricostruzione della loro diffusione, permanenza, cambiamento e scomparsa dalla regione, e delle cause che ne furono alla base, e delle relazioni intercorse tra i diversi attori della realizzazione architettonica, i committenti, gli architetti e le maestranze.
In presenza della complessità degli edifici di Terra d’Otranto, frutto delle numerose trasformazioni e stratificazioni, è risultata evidente la necessità di una conoscenza storica delle  tecniche costruttive, che, consentendo di recuperare il valore di ogni traccia materiale, segno e testimonianza anch’essa della storia, può così garantire una loro corretta conservazione.
Australian Chamber Orchestra: Beethoven [Performance]
Creators: name: Walker, Sally
Publisher: name: ABC Classics
Year: 2020

description: Australian Chamber Orchestra --- Beethoven Edition CD (3 Cds) These recordings represent some of the orchestra's finest performances, including two #1 albums and three ARIA Award-nominees, and feature collaborations with some of Australia's finest artists. WORKS ON THIS RECORDING - Symphony No. 5 in C minor, Op. 67 - Symphony No. 6 in F major, Op. 68 'Pastoral' - String Quartet in B-flat major, Op. 130 with Grosse Fuge, Op. 133 (arr. for string orchestra by Richard Tognetti) - Romance for Violin and Orchestra in F major, Op. 50 - Piano Concerto No. 5 in E-flat major, Op. 73 'Emperor': II. Adagio un poco mosso - Ah! perfido... Per pietà, non dirmi addio, Op. 65, non dirmi addio, Op. 65 - Sonata for Violin and Piano in G major, Op. 30 No. 3 - Sonata for Violin and Piano in A major, Op. 47 'Kreutzer' - Violin Concerto in D major, OP. 61: I. Allegro ma non troppo ARTISTS: Australian Chamber Orchestra, Richard Tognetti (violin & direction), Tamara-Anna Cislowska (piano), Satu Vänskä (violin), Nicole Car (soprano), Erin Helyard (fortepiano)
Creating Statistically Anisotropic and Inhomogeneous Perturbations
Creators: name: Armendariz-Picon, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In almost all structure formation models, primordial perturbations are created within a homogeneous and isotropic universe, like the one we observe. Because their ensemble averages inherit the symmetries of the spacetime in which they are seeded, cosmological perturbations then happen to be statistically isotropic and homogeneous. Certain anomalies in the cosmic microwave background on the other hand suggest that perturbations do not satisfy these statistical properties, thereby challenging perhaps our understanding of structure formation. In this article we relax this tension. We show that if the universe contains an appropriate triad of scalar fields with spatially constant but non-zero gradients, it is possible to generate statistically anisotropic and inhomogeneous primordial perturbations, even though the energy momentum tensor of the triad itself is invariant under translations and rotations.
description: 20 pages, 1 figure. Uses RevTeX4
Monitoring Permafrost in the Arctic- The contribution of the EO-PERSIST research project
Creators: name: Tselos, Georgios - Nektarios
name: Detsikas, Spyridon E.
name: Petropoulos, George P.
Publisher: name: Zenodo
Year: 2025

description: The EO-PERSIST project, which falls under the category of Marie Curie Staff Exchanges and is funded by the European Union, aims to address the urgent need for understanding and monitoring the dynamics of permafrost in the Arctic due to the increasing challenges of climate change.

The coordinating institution of the EO-Persist research program is the Harokopion University, with George P. Petropoulos, AssistantProfessor, as the Principal Investigator for the project.

The goal of EO-PERSIST is to leverage existing services and technologies to create an enhanced ecosystem of Earth Observation databases for applications related to permafrost. By utilizing innovative tools and cloud platforms, the project aims to revolutionize the monitoring of permafrost, promoting methodologies and linking indicators to socioeconomic impacts.
Diffuse Josephson Radiation in Turbulence
Creators: name: Treumann, R. A.
name: Baumjohann, Wolfgang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The possibility of generating diffuse radiation in extended astronomical media by plasma turbulence is investigated under the assumption that the turbulence can be understood as an ensemble of small-scale magnetic filaments (narrow current sheets) forming a texture around a large number of magnetic depletions (voids). On astronomically microscopic scales the dilute high temperature medium (plasma) is to be considered ideally conducting forming a collection of Josephson junctions between two such adjacent quasi-superconductors. The oscillation frequency of those junctions depends on the part of the spectrum that contributes to the oscillation causing weak {radio backgrounds}. Lowest Josephson frequencies/energies near zero may become sources of quasi-stationary magnetic fields.
description: 10 pages, 2 Figures,
Attribute-Based Data Access Control for Multi-Authority System
Creators: name: Shahraki, Ahmad Salehi
name: Rudolph, Carsten
name: Marthie Grobler
Publisher: name: Monash University
Year: 2021
Subjects: subject: 80303 Computer System Security
subject: FOS: Computer and information sciences

description: 2020 IEEE 19th International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)
Attribute-Based Data Access Control for Multi-Authority System
Creators: name: Shahraki, Ahmad Salehi
name: Rudolph, Carsten
name: Marthie Grobler
Publisher: name: Monash University
Year: 2021
Subjects: subject: 80303 Computer System Security
subject: FOS: Computer and information sciences

description: The 19th IEEE International Conference on Trust, Security and Privacy in Computing and Communications
Kronos Philosophical Journal, vol.III/2014
Creators: name: Pangle, Thomas
name: Atanassow, Ewa
name: Pihas, Gabriel
name: Macfarland, Joseph C.
name: Cichocki, Marek A.
name: Dimitrijević, Ivan
name: Sosnowska, Paulina
name: Serafin, Andrzej
name: Kuźniarz, Bartosz
name: Księżopolski, Andrzej
name: Księżopolska, Irena
name: Witkowska, Halszka
name: Toczyski, Arnold
name: Głębocki, Henryk
name: Orłowska, Paulina
name: Licatese, Giuseppe Perconte
name: Gibińska, Marta
name: Nowak, Piotr
Publisher: name: Zenodo
Year: 2014
Subjects: Political Philosophy
Social Philosophy
Leo Strauss
Aristotle
Xenophon
Aristophanes
Dante
Hannah Arendt
Carl Schmitt
Martin Heidegger
Terry Eagleton
Julian Barnes
Vladimir Nabokov
Count Adam de Gurowski
Sergio Quinzio

description: The annual Kronos Philosophical Journal was established in Warsaw in 2012. The papers presented in the annual might be of interest to the readers from outside Poland, allowing them to familiarize themselves with the dynamic thought of contemporary Polish authors, as well as entirely new topics, rarely discussed by English speaking authors.

The third issue opens with a previously unpublished passage from Leo Strauss’s lectures on Aristotle. It features papers concerning political philosophy from Aristophanes and Xenophon to Carl Schmitt and Terry Eagleton.
Derivation of the Grodzins relation in collective nuclear model
Creators: name: Jolos, R. V.
name: Kolganova, E. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Basing on the Bohr collective quadrupole Hamiltonian the $A$-dependence of the Grodzins product is derived and the proportionality coefficient for the Grodzins relation is evaluated. The result obtained is in a correspondence with the experimental data.
description: 7 pages
An Isotropic Metric
Creators: name: Rudmin, Joseph Daniel
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: An isotropic metric for a black hole and a better vacuum condition \nabla^2 V_G =0 are presented which yield distinct terms for the energy densities of ordinary matter and gravitational fields in the Einstein tensor (G^44 =-g^2 (2\nabla^2 V_G +(\nabla V_G)^2)) This model resolves an inconsistency between electromagnetism and gravity in the calculation of field energy. Resolution of this inconsistency suggests a slight modification of the Einstein equation to gG^μν= 8πG T^μν.
description: 3 pages, already published in a small refereed journal: The Virginia Journal of Science. Posted here with permission of that journal. Please refer to http://www.vacadsci.org/vjsArchives/v58/58-1/titlepage.html
Supplemental Materials.docx
Creators: name: Lu, Qi
Publisher: name: figshare
Year: 2021
Subjects: subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Association between Serum 25-Hydroxyvitamin D Concentrations and All-Cause and Cause-Specific Mortality among Adults with Prediabetes
Supplemental Materials
Creators: name: Lu, Qi
Publisher: name: figshare
Year: 2021
Subjects: subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Association between Serum 25-Hydroxyvitamin D Concentrations and All-Cause and Cause-Specific Mortality among Adults with Prediabetes
Through a Black Hole into a New Universe
Creators: name: Brandenberger, Robert
name: Heisenberg, Lavinia
name: Robnik, Jakob
Publisher: name: arXiv
Year: 2021
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: We show that an S-Brane which arises in the inside of the black hole horizon when the Weyl curvature reaches the string scale induces a continuous transition between the inside of the black hole and the beginning of a new universe. This provides a simultaneous resolution of both the black hole and Big Bang singularities. In this context, the black hole information loss problem is also naturally resolved.
description: 9 pages, 3 figures; essay written for the Gravity Research Foundation 2021 Awards for Essays on Gravitation, awarded Honorable Mention
A laboratory and clinical study on vitreous fluorophotometry
Creators: name: Pang, Kian Tiong
Publisher: name: University of British Columbia
Year: 2010

description: The optical, electronic sensoring and data acquisition systems were assembled and the software developed for a vitreous fluorophoto-meter which was then calibrated and used to quantify the integrity of the blood-retinal barrier in a pilot study of diabetic retinopathy and multiple sclerosis compared to normal controls. Breakdown of the blood-retinal barrier was quantified by measuring fluorescence in the vitreous at standard time intervals over one hour following intravenous injection of sodium fluorescein. The plasma dye concentration was measured throughout the procedure. Leakage was expressed as a penetration ratio of the average concentration at 3mm from the retina to the total plasma dye concentration. The results from diabetic subjects showing well defined stages of retinopathy severity demonstrated the proper functioning of the instrument by showing values in approximate agreement with retinopathy severity, thus confirming the findings of previous observers. Of 16 multiple sclerosis subjects, results showed no significant difference between activity categories or level of current activity. Abnormally high penetration ratio was associated with active periphlebitis. A new finding was the presence of abnormally high leakage in 2 subjects showing no ocular signs of disease. Subjects without or with inactive periphlebitis showed breakdown of the blood-retinal barrier comparable in severity to diabetic subjects showing no or mild retinopathy. The vitreous diffusion constant of the dye for normal controls and multiple sclerosis subjects was not significantly different from that in water.
An SU(5)$\otimes$Z_{13} Grand Unification Model
Creators: name: Dias, Alex G.
name: Franco, Edison T.
name: Pleitez, Vicente
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose an SU(5) grand unified model with an invisible axion and the unification of the three coupling constants which is in agreement with the values, at $M_Z$, of $α$, $α_s$, and $\sin^2θ_W$. A discrete, anomalous, $Z_{13}$ symmetry implies that the Peccei-Quinn symmetry is an automatic symmetry of the classical Lagrangian protecting, at the same time, the invisible axion against possible semi-classical gravity effects. Although the unification scale is of the order of the Peccei-Quinn scale the proton is stabilized by the fact that in this model the standard model fields form the SU(5) multiplets completed by new exotic fields and, also, because it is protected by the $Z_{13}$ symmetry.
description: 14 pages, more typos corrected
TESS observations of TX Col: Rapidly varying accretion flow
Creators: name: Rawat, Nikita
name: Pandey, J. C.
name: Joshi, Arti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using the first long-term photometry from the Transiting Exoplanet Survey Satellite, we have carried out a detailed time-resolved timing analysis of an intermediate polar TX Col. The power spectra of almost 52 days continuous time-series data reveal the orbital period of $5.691 \pm 0.006$ hr, spin period of $1909.5 \pm 0.2$ s, and beat period of $2105.76 \pm 0.25$ s, which is consistent with the earlier results. We have also found the presence of quasi-periodic oscillations (QPOs) for a few days with a period of 5850-5950 s, which appears to be due to the beating of the Keplerian period with the spin period of the white dwarf. The continuous data allowed us to look thoroughly at the day-wise evolution of the system's accretion geometry. We report here that the TX Col changes its accretion mechanism even on a time-scale of one day, confirming its variable disk-overflow accretion nature. For the majority of the time, it was found to be disk-overflow system with stream-fed dominance, however, pure disk-fed and pure stream-fed accretions cannot be ruled out during the observations.
description: 13 pages, 6 figures, Accepted for publication in ApJ
Multipoint Padé Approximants to Complex Cauchy Transforms with Polar Singularities
Creators: name: Baratchart, L.
name: Yattselev, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 41A20; 41A30; 42C05

description: We study diagonal multipoint Padé approximants to sums of a Cauchy transform of a complex measure and a rational function. The measure is assumed to have compact regular support included into the real line and an argument of bounded variation on the support. For interpolation sets whose normalized counting measures converge sufficiently fast in the weak-star sense to some conjugate-symmetric distribution, we show that the counting measures of poles of the approximants converge to the balayage of that distribution onto the support of the measure, in the weak-star sense, that the approximants themselves converge in capacity to the approximated function outside the support of the measure, and that the poles of the additional rational function attract at least as many poles of the approximants as their multiplicity and not much more.
description: 30 pages, 4 figures