cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Informed peer review for publication assessments: Are improved impact measures worth the hassle?
Creators: name: Abramo, Giovanni
name: D'Angelo, Ciriaco Andrea
name: Felici, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: In this work we ask whether and to what extent applying a predictor of publications' impact better than early citations, has an effect on the assessment of research performance of individual scientists. Specifically, we measure the total impact of Italian professors in the sciences and economics in a period of time, valuing their publications first by early citations and then by a weighted combination of early citations and impact factor of the hosting journal. As expected, scores and ranks by the two indicators show a very strong correlation, but there occur also significant shifts in many fields, mainly in Economics and statistics, and Mathematics and computer science. The higher the share of uncited professors in a field and the shorter the citation time window, the more recommendable the recourse to the above combination.
Relaxation between electrons and surface phonons in nanoscale metal films
Creators: name: Singh, Navinder
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Two Temperature model of M I Kaganov, I M Lifshitz and L V Tanatarov (Sov. Phys. JETP 4, 173 (1957)) about relaxation between electrons and bulk phonons is extended to the case of surface phonons. The state of electrons and phonons is described by equilibrium Fermi and Bose functions with different temperatures. The new feature added is the geometric constraint of surface phonons. We obtain expressions for the energy transfer rate from degenerate hot electrons to surface-phonons, which is order of magnitude less than that for the bulk.
description: 4 pages, 1 figure
A circular polarisation survey for radio stars with the Australian SKA Pathfinder
Creators: name: Pritchard, Joshua
name: Murphy, Tara
name: Zic, Andrew
name: Lynch, Christene
name: Heald, George
name: Kaplan, David L.
name: Anderson, Craig
name: Banfield, Julie
name: Hale, Catherine
name: Hotan, Aidan
name: Lenc, Emil
name: Leung, James K.
name: McConnell, David
name: Moss, Vanessa A.
name: Raja, Wasim
name: Stewart, Adam J.
name: Whiting, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present results from a circular polarisation survey for radio stars in the Rapid ASKAP Continuum Survey (RACS). RACS is a survey of the entire sky south of $δ=+41^\circ$ being conducted with the Australian Square Kilometre Array Pathfinder telescope (ASKAP) over a 288 MHz wide band centred on 887.5 MHz. The data we analyse includes Stokes I and V polarisation products to an RMS sensitivity of 250 $μ$Jy PSF$^{-1}$. We searched RACS for sources with fractional circular polarisation above 6 per cent, and after excluding imaging artefacts, polarisation leakage, and known pulsars we identified radio emission coincident with 33 known stars. These range from M-dwarfs through to magnetic, chemically peculiar A- and B-type stars. Some of these are well known radio stars such as YZ CMi and CU Vir, but 23 have no previous radio detections. We report the flux density and derived brightness temperature of these detections and discuss the nature of the radio emission. We also discuss the implications of our results for the population statistics of radio stars in the context of future ASKAP and Square Kilometre Array surveys.
description: 18 pages, 10 figures, to be published in MNRAS
D-forced spaces: a new approach to resolvability
Creators: name: Juhasz, Istvan
name: Soukup, Lajos
name: Szentmiklossy, Zoltan
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Topology (math.GN)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 54A35 (Primary) 03E35, 54A25 (Secondary)

description: We introduce a ZFC method that enables us to build spaces (in fact special dense subspaces of certain Cantor cubes) in which we have "full control" over all dense subsets. Using this method we are able to construct, in ZFC, for each uncountable regular cardinal $λ$ a 0-dimensional $T_2$, hence Tychonov, space which is $μ$-resolvable for all $μ< λ$ but not $λ$-resolvable. This yields the final (negative) solution of a celebrated problem of Ceder and Pearson raised in 1967: Are $ω$-resolvable spaces maximally resolvable? This method enables us to solve several other open problems concerning resolvability as well.
Precision mass measurements of radioactive nuclei at JYFLTRAP
Creators: name: Rahaman, S.
name: Elomaa, V. -V.
name: Eronen, T.
name: Hager, U.
name: Hakala, J.
name: Jokinen, A.
name: Kankainen, A.
name: Moore, I. D.
name: Penttila, H.
name: Rinta-Antila, S.
name: Rissanen, J.
name: Saastamoinen, A.
name: Sonoda, T.
name: Weber, C.
name: Aysto, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Penning trap mass spectrometer JYFLTRAP was used to measure the atomic masses of radioactive nuclei with an uncertainty better than 10 keV. The atomic masses of the neutron-deficient nuclei around the N = Z line were measured to improve the understanding of the rp-process path and the SbSnTe cycle. Furthermore, the masses of the neutron-rich gallium (Z = 31) to palladium (Z = 46) nuclei have been measured. The physics impacts on the nuclear structure and the r-process paths are reviewed. A better understanding of the nuclear deformation is presented by studying the pairing energy around A = 100.
description: 4 pages and 4 figures, RNB7 conf. proc
Review of Susan Thomas. 2009. Cuban Zarzuela: Performing Race and Gender on Havana’s Lyric Stage. Urbana and Chicago: University of Illinois
Creators: name: Newland, Marti
Publisher: name: Current Musicology
Year: 2010

description: In Cuban Zarzuela: Performing Race and Gender on Havana’s Lyric Stage, musicologist Susan Thomas draws on her years of archival work in Cuba and the work of a broad collection of scholars including Homi Bhabha, Judith Butler, Karen Henson, and Robin Moore to detail the development and performance practices of an understudied genre of Cuban opera, “zarzuela.” Emerging as a well-received genre in Havana theaters during the early twentieth century, Cuban zarzuela incorporates Spanish light opera and Afrocuban musical characteristics into one-act operettas featuring a number of racial and nationalist archetypes endemic in turn-of-the-century Cuba: the “mulatta” woman, the “black” man, the “white” woman, and the “white” man. Thomas organizes the text into studies of each of these subject positions to reveal how Cuban zarzuela served as a platform to establish a distinctly Cuban opera genre, as well as to provide a respectable social outlet for Cuba’s white, female bourgeoisie. A rich example of the confluence of nationalism, race, gender, class, art and popular music, this genre allows the author to analyze a vast swath of key polemics challenging the modern West.
description: Current Musicology, No 89 (2010): Current Musicology
The condition for entanglement enhanced information transmission of Pauli memory channel
Creators: name: Chen, Xiao-yu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The sufficient condition of entanglement enhanced classical capacity is given for Pauli memory channel with arbitrary channel parameters. In some special case the condition is also necessary but fail to be necessary in general. The theory of majorization and perturbation are used in the proving.
description: 5 pages
Modeling of semelparous/iteroparous polymorphism in Botryllus Schlosseri
Creators: name: Omielan, John
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes and models the age of first sexual reproduction in Botryllus schlosseri. B. schlosseri is a sessile, colonial fouling organism that lives mainly in the low intertidal zone of temperate waters. In Eel Pond, Woods Hole, Massachusetts, semelparous (reproduces only once) and iteroparous (reproduces several times) morphs apparently co-exist. A survey of previous life-history models is given, but none of them can be used very effectively on B. schlosseri. Instead, a dynamic programming model is presented that models, with a good fit to field data, the age of first sexual reproduction in each morph separately. The model makes several predictions. First, the life history characteristics, particularly the age of first sexual reproduction, are near equilibrium. Secondly, the growth reduction after winter affects the optimal age of sexual reproduction throughout the year, suggesting that colonies can tell the time of year through the water temperature or the photoperiod. Thirdly, the primary cause of variance in the age of first sexual reproduction is the spatial variation in the environment. Finally, iteroparous colonies continue reproducing every generation once they begin, not necessarily due to a physical constraint, but simply because it is optimal for them to do so. Next, the coexistence of the morphs was looked at. An important factor is Botryl-loides leachi, a closely related competitor, that in the summer and early fall overgrows semelparous colonies but not iteroparous colonies. However, since B. leachi was only introduced into Eel Pond about 30 years ago, an interesting question is whether the current conditions (i.e. coexistence) is stable or not. A survey was taken of previous models that look at the coexistence of species (the two morphs are treated as separate species). Although these models indicated that the two morphs can co-exist, none of them are accurate enough to be able to confidently determine if the coexistence is stable. Although a dynamic programming model would be precise enough, too much unavailable data would be required.
Knowledge spillovers: does the geographic proximity effect decay over time? A discipline-level analysis, accounting for cognitive proximity, with and without self-citations
Creators: name: Abramo, Giovanni
name: D'Angelo, Ciriaco Andrea
name: Di Costa, Flavia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: This work analyzes the variation over time of the effect of geographic distance on knowledge flows. The flows are measured through the citations exchanged between scientific publications, including and excluding self-citations. To calculate geographic distances between citing and cited publication, each publication is associated with a "prevailing" territory, according to the authors' affiliations. We then apply a gravity model to account for the research size of the territories, in terms of cognitive proximity of citing-cited publications. The field of observation is the 2010-2017 world publications citing the 2010-2012 Italian publications, as indexed in the Web of Science. The results show that in domestic knowledge flows, geographic proximity remains an influential factor through time, although with differences among disciplines and trends of attenuating effects. Finally, we replicate the analyses of knowledge flows but with the exclusion of self-citations: in this manner the effect of geographic proximity seems reduced, particularly at the national scale, but the differences (with vs without self-citations) lessen through time. As shown in previous works, the effect of distance on continental flows is modest (imperceptible for intercontinental flows), yet here too time has some influence, including concerning exclusion of self-citations.
MOESM1 of Associations between age and dyslipidemia are differed by education level: The Cardiovascular and Metabolic Diseases Etiology Research Center (CMERC) cohort
Creators: name: Cho, So
name: Lee, Ho
name: Shim, Jee
name: Song, Bo
name: Kim, Hyeon
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 1 Figure S1. Flow chart of the selection criteria for the final study population (n = 2049). Table S1. Distribution of lipid levels by age group and education level (n = 2049). Table S2. Association between age and dyslipidemia prevalence according to education level and other known risk factors using a generalized linear model (n = 2049). Table S3. Association between age and individual dyslipidemia parameters according to education level and other known risk factors using a generalized linear model (n = 2049). Table S4. Association between age and LDL cholesterol by the secondary prevention target goals according to education level and other known risk factors using a generalized linear model (n = 2049).
Miniaturised Spotter-Compatible Multicapillary Stamping Tool for Microarray Printing
Creators: name: Drobyshev, Alexei L
name: Verkhodanov, Nikolai N
name: Zasedatelev, Alexander S
Publisher: name: arXiv
Year: 2007
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Novel microstamping tool for microarray printing is proposed. The tool is capable to spot up to 127 droplets of different solutions in single touch. It is easily compatible with commercially available microarray spotters. The tool is based on multichannel funnel with polypropylene capillaries inserted into its channels. Superior flexibility is achieved by ability to replace any printing capillary of the tool. As a practical implementation, hydrogel-based microarrays were stamped and successfully applied to identify the Mycobacterium tuberculosis drug resistance.
Strong disorder renormalization group study of S=1/2 Heisenberg antiferromagnet layers/bilayers with bond randomness, site dilution and dimer dilution
Creators: name: Lin, Yu-Cheng
name: Rieger, Heiko
name: Laflorencie, Nicolas
name: Igloi, Ferenc
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Using a numerical implementation of strong disorder renormalization group, we study the low-energy, long-distance properties of layers and bilayers of $S = 1/2$ Heisenberg antiferromagnets with different type of disorder: bond randomness, site and dimer dilution. Generally the systems exhibit an ordered and a disordered phase separated by a phase boundary on which the static critical exponents appear to be independent of bond randomness in the strong disorder regime, while the dynamical exponent is a continuous function of the bond disorder strength. The low-energy fixed points of the off-critical phases are affected by the actual form of the disorder, and the disorder induced dynamical exponent depends on the disorder strength. As the strength of bond disorder is increased, there is a set of crossovers in the properties of the low-energy singularities. For weak disorder quantum fluctuations play the dominant role. For intermediate disorder non-localized disorder fluctuations are relevant, which become localized for even stronger bond disorder. We also present some quantum Monte Carlo simulations results to support the strong disorder renormalization approach.
description: 12 pages, 13 figures
Numerical analysis of high pressure injection of natural gas into diesel engine combustion chambers
Creators: name: Walsh, Paul
Publisher: name: University of British Columbia
Year: 2008

description: The behaviour of a transient turbulent jet of natural gas as it is injected into a simulated combustion chamber of a diesel engine was investigated using numerical techniques. The TEACH code developed by A.D. Gosman of Imperial College, London, was used to investigate the influence of parameters such as injection angle, engine speed, and reservoir tank-to-chamber pressure ratio on the development of the jet. It has been shown that the TEACH code is fully capable of predicting details of jet behaviour such as radial and axial velocity and concentration profiles when compared to known data. The code has been modified to use a compressing and expanding grid to simulate the effects of piston motion. A model of a fixed geometry combustion chamber revealed that the most influential parameter on jet behaviour is the injection angle. The jet had a tendency to adhere to either the top wall of the chamber near the injector tip or to the bottom wall directly opposite depending on the injector angle. The compressing grid simulation showed that the presence of piston motion combined with other parameters such as injection angle and pressure ratio, produced jet characteristics that were dissimilar compared to the fixed boundary model. In general it was shown that the jet was less sensitive to injection angle and strongly influenced by increased pressure ratio as a result of the moving boundary.
Il Mediterraneo, scenario in perenne movimento, luogo di tragedie post moderne. Spunti analitici su un saggio geoculturale e scientifico di Giuseppe Campione
Creators: name: Bolognari, Velleda
Publisher: name: Humanities
Year: 2019

description: Il Mediterraneo, il mare tra le terre, il “piccolo globo azzurro”, un paesaggio geograficamente lambito dalle acque, tra le numerose vicende marine mitologiche e storiche è un’area di diffusa civiltà tramandata. La rappresentazione geografica del canale e l’organizzazione dinamica dello spazio lo rendono favorevole al processo di integrazione europea e lo caratterizzano come iconografia regionale. L’articolo prende spunto dalle migrazioni mediterranee che nell’epoca attuale hanno trasformato le strade dell’acqua in un luogo di tragedie e di morte. Una prospettiva infausta per quel mare celebrato da Omero e da studiosi che, in tempi più recenti, ne hanno esaltato la bellezza, la storia, i rapporti sociali, i transiti, le etnie meticce. L’articolo intende ispirarsi a tali valori considerando l’opera saggistica di uno studioso messinese che, in sintonia con i suoi interessi culturali e scientifici in ambito geografico e politico, nella prospettiva di una “antropologia del movimento” e di una “geografia come spazio dell’accadere”, sviluppa un percorso articolato sulle recenti ed inarrestabili migrazioni del mare nostrum. Innovativo sul piano metodologico lo studioso riesce a proporre, in una visione insieme geoletteraria, geopolitica, culturale, filosofico-ermeneutica, un panorama complesso del Mediterraneo per tentare di oltrepassare la tragicità di un mare che inghiotte barche, barconi, uomini e che trasforma quel colore del vino delle sue acque nel sangue dei morti annegati.
description: Humanities, Vol 8, N° 1 (2019)
CP Violation and B Physics at the LHC
Creators: name: Fleischer, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this decade, there are huge efforts to explore B-meson decays, which provide an interesting playground for stringent tests of the Standard-Model description of the quark-flavour sector and the CP violation residing there. Thanks to the $e^+e^-$ B factories at KEK and SLAC, CP violation is now a well-established phenomenon in the B-meson system, and recently, also $B^0_s$--$\bar B^0_s$ mixing could be measured at the Tevatron. The decays of $B^0_s$ mesons are the key target of the B-physics programme at the LHC, and will be the focus of this presentation, discussing the theoretical aspects of various benchmark channels and the question of how much space for new-physics effects in their observables is left by the recent experimental results.
description: 26 pages, 7 figures, invited talk given at the 8th International Workshop on Heavy Quarks and Leptons (HQL2006), 16-20 October 2006, Munich, Germany, to appear in the proceedings, typo corrected
Primary disks and their observational appearance in collapsing magnetic rotating protostellar clouds
Creators: name: Kargaltseva, Natalya S.
name: Khaibrakhmanov, Sergey A.
name: Dudorov, Alexander E.
name: Zhilkin, Andrey G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The collapse of the magnetic rotating protostellar cloud with mass of $10\,M_{\odot}$ is numerically studied. The initial ratios of the thermal, magnetic, and rotational energies of the cloud to the modulus of its gravitational energy are 0.3, 0.2 and 0.01, respectively. The emphasis is on the evolution and properties of the quasi-magnetostatic primary disk formed at the isothermal stage of the collapse. Simulations show that the primary disk size and mass increase during evolution from $1500$ au to $7400$ au and from $0.3\,M_{\odot}$ to $5.2\,M_{\odot}$, respectively. Magnetic field is quasi-radial in the cloud envelope and quasi-uniform within the primary disk. A toroidal magnetic field is generated behind the front of the fast shock MHD wave propagating from the primary disk boundary and in the region of the outflow formed near the first hydrostatic core. The hierarchical structure of collapsing protostellar clouds can be revealed in observations in terms of the magnetic field geometry and the angular momentum distribution.
description: 3 pages, 1 figure, published in Bulletin of the Lebedev Physics Institute
Status of baryonic B decays
Creators: name: Cheng, Hai-Yang
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: An overview of exclusive two-body and three-body baryonic B decays is given. The threshold enhancement effect in the dibaryon invariant mass and the angular distributions in the dibaryon rest frame are stressed and explained. Weak radiative baryonic B decays mediated by the electromagnetic penguin process $b\to sγ$ are discussed. Apart from the first observation of the radiative penguin decay $B^-\toΛ\bar pγ$ with the baryonic final state, the decay $B^-\to Ξ^0\barΣ^-γ$ at the level of $6\times 10^{-7}$ may be accessible to B factories in the near future.
description: 6 pages, 1 figure, talk presented at the Fist Workshop on Theory, Phenomenology and Experiments in Heavy Flavor Physics, Capri, Italy, May 29-31, 2006
Finite Tsallis Gravitational Partition Function for a System of Galaxies
Creators: name: Hameeda, Mir
name: Pourhassan, Behnam
name: Rocca, Mario C.
name: Faizal, Mir
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we will study the large scale structure formation using the gravitational partition function. We will assertively argue that the system of gravitating galaxies can be analyzed using the Tsallis statistical mechanics. The divergences in the Tsallis gravitational partition function can be removed using the mathematical riches of the generalization of the dimensional regularization (GDR). The finite gravitational partition function thus obtained will be used to evaluate the thermodynamics of the system of galaxies and thus, to understand the clustering of galaxies in the universe. The correlation function which is believed to contain the information of clustering of galaxies will also be discussed in this formalism.
description: Accepted for publication in General Relativity and Gravitation
A HYBRID MACHINE LEARNING METHOD FOR IMAGE CLASSIFICATION
Creators: name: SARA LAROUI
name: HICHAM OMARA
name: OUSSAMA MAHBOUB
name: MOHAMED LAZAAR
Publisher: name: Zenodo
Year: 2023
Subjects: Deep Learning, Convolutional Neural Networks, VGG16, Image Classification, Linear Support Vector Machine.

description: Abstract

Deep learning (DL) technologies are currently a trendy topic because they aim to understand concepts more precisely by analyzing data at a high level of abstraction through non-linear understanding. This enables them to achieve high performance in image classification, especially for tasks related to medical diagnoses, like analyzing images of the brain’s histopathology. Neural networks (CNN) are the most used deep learning models for diagnosing and analyzing medical imaging data. However, CNNs have some drawbacks, such as requiring a large amount of training data, being prone to overfitting, and having many hyperparameters that need to be tuned. Hyperparameter optimization is the process of finding the optimal values for these parameters that control the behavior and performance of the model. CNN must be implemented at a significant computational expense, and various parameters may need to be adjusted. In this study, we propose a hybrid strategy by fitting the VGG16 pre-trained model with the LSVM classifier for classification of a brain image as normal or abnormal. The VGG16 model is a popular CNN architecture that has been trained on a large dataset of natural images and can extract high-level features from any input image. The LSVM classifier is a linear support vector machine that can learn a decision boundary between two classes of data. By combining these two methods, we aim to reduce the computational cost and improve the accuracy of the classification task. An accuracy of 98.24% is the demonstrated performance using this proposed method on the test set. It was found to be better in terms of accuracy, error rate, sensitivity, F-1 score, and specificity, according to the experimental results. This shows that our hybrid strategy is effective and robust for brain image classification.
Large atom number Bose-Einstein condensate of sodium
Creators: name: van der Stam, K. M. R.
name: van Ooijen, E. D.
name: Meppelink, R.
name: Vogels, J. M.
name: van der Straten, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We describe the setup to create a large Bose-Einstein condensate containing more than 120x10^6 atoms. In the experiment a thermal beam is slowed by a Zeeman slower and captured in a dark-spot magneto-optical trap (MOT). A typical dark-spot MOT in our experiments contains 2.0x10^10 atoms with a temperature of 320 microK and a density of about 1.0x10^11 atoms/cm^3. The sample is spin polarized in a high magnetic field, before the atoms are loaded in the magnetic trap. Spin polarizing in a high magnetic field results in an increase in the transfer efficiency by a factor of 2 compared to experiments without spin polarizing. In the magnetic trap the cloud is cooled to degeneracy in 50 s by evaporative cooling. To suppress the 3-body losses at the end of the evaporation the magnetic trap is decompressed in the axial direction.
description: 11 pages, 12 figures, submitted to Review Of Scientific Instruments
Dark matter and dark radiation from evaporating Kerr primordial black holes
Creators: name: Masina, Isabella
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mechanism of the generation of dark matter and dark radiation from the evaporation of primordial black holes is very interesting. We consider the case of Kerr black holes to generalize previous results obtained in the Schwarzschild case. For dark matter, the results do not change dramatically and the bounds on warm dark matter apply similarly: in particular, the Kerr case cannot save the scenario of black hole domination for light dark matter. For dark radiation, the expectations for $ΔN_{eff}$ do not change significantly with respect to the Schwarzschild case, but for an enhancement in the case of spin 2 particles: in the massless case, however, the projected experimental sensitivity would be reached only for extremal black holes.
description: 25 pages, 6 figures. arXiv admin note: text overlap with arXiv:2012.09867
Prototyping and Evaluation of Infrastructure-Assisted Transition of Control for Cooperative Automated Vehicles
Creators: name: Coll-Perales, Baldomero
name: Schulte-Tigges, Joschua
name: Rondinone, Michele
name: Gozalvez, Javier
name: Reke, Michael
name: Matheis, Dominik
name: Walter, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Automated driving is now possible in diverse road and traffic conditions. However, there are still situations that automated vehicles cannot handle safely and efficiently. In this case, a Transition of Control (ToC) is necessary so that the driver takes control of the driving. Executing a ToC requires the driver to get full situation awareness of the driving environment. If the driver fails to get back the control in a limited time, a Minimum Risk Maneuver (MRM) is executed to bring the vehicle into a safe state (e.g., decelerating to full stop). The execution of ToCs requires some time and can cause traffic disruption and safety risks that increase if several vehicles execute ToCs/MRMs at similar times and in the same area. This study proposes to use novel C-ITS traffic management measures where the infrastructure exploits V2X communications to assist Connected and Automated Vehicles (CAVs) in the execution of ToCs. The infrastructure can suggest a spatial distribution of ToCs, and inform vehicles of the locations where they could execute a safe stop in case of MRM. This paper reports the first field operational tests that validate the feasibility and quantify the benefits of the proposed infrastructure-assisted ToC and MRM management. The paper also presents the CAV and roadside infrastructure prototypes implemented and used in the trials. The conducted field trials demonstrate that infrastructure-assisted traffic management solutions can reduce safety risks and traffic disruptions.
description: 16 pages, 15 figures, 3 tables. in IEEE Transactions on Intelligent Transportation Systems, 04 March 2021 (Early Access)
Photographs year 3
Creators: name: Beier, Christine
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2016
Subjects: subject: ore
subject: Máíhĩ̵̀kì language

description: All photographs taken using CMB's camera from June through August 2012. In addition to sites listed, also includes photographs from Yanayacu and Algodón rivers.
Stimulated Raman adiabatic passage in a multi-level atom
Creators: name: Boozer, A. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a general formalism for describing stimulated Raman adiabatic passage in a multi-level atom. The atom is assumed to have two ground state manifolds a and b and an excited state manifold e, and the adiabatic passage is carried out by resonantly driving the a-e and b-e transitions with time-dependent fields. Our formalism gives a complete description of the adiabatic passage process, and can be applied to systems with arbitrary numbers of degenerate states in each manifold and arbitrary couplings of the a-e and b-e transitions. We illustrate the formalism by applying it to both a simple toy model and to adiabatic passage in the Cesium atom.
description: 14 pages, 2 figures
Los gobiernos no centrales y sus redes: análisis de su rol como actores en la gobernanza global
Creators: name: Sánchez Cano, Javier
Publisher: name: Zenodo
Year: 2016

description: La tesis aborda la cuestión de las redes de gobiernos no centrales, a partir de su proliferación y de su creciente activismo interna- cional en las últimas décadas, y se pregunta por su condición de actores internacionales. Para ello, examina el tratamiento de los gobiernos no centrales y de las redes en tres campos de estudio: el análisis de la política exterior, la integración regional europea, y la globalización. A partir de propuestas teóricas y conceptua- les de estos tres espacios se realizan cuatro estudios de caso, que abordan el comportamiento de las redes de ciudades y regiones ante diversas problemáticas globales –urbanización, cooperación al desarrollo, medio ambiente–, así como el planteamiento de la agenda constitucional regional europea. Las conclusiones mues- tran lo similar de la respuesta de las redes ante la europeización y la globalización, la coherencia en sus objetivos y estrategias, y la utilidad de un marco de análisis funcional, aplicable tanto en entornos intergubernamentales como en aquellos que registran un funcionamiento multinivel.
Proceedings 11th International Workshop on Computing with Terms and Graphs
Creators: name: Bahr, Patrick
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: Graphs, and graph transformation systems, are used in many areas within Computer Science: to represent data structures and algorithms, to define computation models, as a general modelling tool to study complex systems, etc. Research in term and graph rewriting ranges from theoretical questions to practical implementation issues. Relevant research areas include: the modelling of first- and higher-order term rewriting by graph rewriting, graphical frameworks such as interaction nets and sharing graphs (optimal reduction), rewrite calculi for the analysis of functional programs, graph reduction implementations of programming languages, graphical calculi modelling concurrent and mobile computations, object-oriented systems, graphs as a model of biological or chemical systems, and automated reasoning and symbolic computation systems working on shared structures. The aim of the TERMGRAPH workshop is to bring together researchers working in these different domains and to foster their interaction, to provide a forum for presenting new ideas and work in progress, and to enable newcomers to learn about current activities in this area.
description: This volume contains a selection of the papers presented at TERMGRAPH 2020, the 11th International Workshop on Computing with Terms and Graphs
Bipolar supercurrent in graphene
Creators: name: Heersche, Hubert B.
name: Jarillo-Herrero, Pablo
name: Oostinga, Jeroen B.
name: Vandersypen, Lieven M. K.
name: Morpurgo, Alberto F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene -a recently discovered one-atom-thick layer of graphite- constitutes a new model system in condensed matter physics, because it is the first material in which charge carriers behave as massless chiral relativistic particles. The anomalous quantization of the Hall conductance, which is now understood theoretically, is one of the experimental signatures of the peculiar transport properties of relativistic electrons in graphene. Other unusual phenomena, like the finite conductivity of order 4e^2/h at the charge neutrality (or Dirac) point, have come as a surprise and remain to be explained. Here, we study the Josephson effect in graphene. Our experiments rely on mesoscopic superconducting junctions consisting of a graphene layer contacted by two closely spaced superconducting electrodes, where the charge density can be controlled by means of a gate electrode. We observe a supercurrent that, depending on the gate voltage, is carried by either electrons in the conduction band or by holes in the valence band. More importantly, we find that not only the normal state conductance of graphene is finite, but also a finite supercurrent can flow at zero charge density. Our observations shed light on the special role of time reversal symmetry in graphene and constitute the first demonstration of phase coherent electronic transport at the Dirac point.
description: Under review, 12 pages, 4 Figs., suppl. info (v2 identical, resolved file problems)
Leon Crickmore-C.P.E. Bach: Six Harpsichord Concertos [Wq. 43i], Jane R. Steveris-The Keyboard Concertos of Carl Phillipp Emanuel Bach
Creators: name: Smith, Chester Fanning
Publisher: name: Current Musicology
Year: 2019

description: -
description: Current Musicology, No 9 (1969): Current Musicology
KMT-2019-BLG-0797: binary-lensing event occurring on a binary stellar system
Creators: name: Han, Cheongho
name: Lee, Chung-Uk
name: Ryu, Yoon-Hyun
name: Kim, Doeon
name: Albrow, Michael D.
name: Chung, Sun-Ju
name: Gould, Andrew
name: Hwang, Kyu-Ha
name: Jung, Youn Kil
name: Kim, Hyoun-Woo
name: Shin, In-Gu
name: Shvartzvald, Yossi
name: Yee, Jennifer C.
name: Zang, Weicheng
name: Cha, Sang-Mok
name: Kim, Dong-Jin
name: Kim, Seung-Lee
name: Lee, Dong-Joo
name: Lee, Yongseok
name: Park, Byeong-Gon
name: Pogge, Richard W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze the microlensing event KMT-2019-BLG-0797. The light curve of the event exhibits two anomalous features from a single-lens single-source model, and we aim to reveal the nature of the anomaly. It is found that a model with two lenses plus a single source (2L1S model) can explain one feature of the anomaly, but the other feature cannot be explained. We test various models and find that both anomalous features can be explained by introducing an extra source to a 2L1S model (2L2S model), making the event the third confirmed case of a 2L2S event, following on MOA-2010-BLG-117 and OGLE-2016-BLG-1003. It is estimated that the extra source comprises $\sim 4\%$ of the $I$-band flux from the primary source. Interpreting the event is subject to a close--wide degeneracy. According to the close solution, the lens is a binary consisting of two brown dwarfs with masses $(M_1, M_2)\sim (0.034, 0.021)~M_\odot$, and it is located at a distance of $\dl\sim 8.2$~kpc. According to the wide solution, on the other hand, the lens is composed of an object at the star/brown-dwarf boundary and an M dwarf with masses $(M_1, M_2)\sim (0.06, 0.33)~M_\odot$ located at $\dl\sim 7.7$~kpc. The source is composed of a late-G-dwarf/early-K-dwarf primary and an early-to-mid M-dwarf companion.
description: 9 pages, 10 figures, 7 tables
Boundary-layer control of bluff bodies with application to drag reduction of tractor-trailer truck configurations
Creators: name: Ying, Bin
Publisher: name: University of British Columbia
Year: 2008

description: Effectiveness of two fundamentally different concepts of boundary-layer control for the drag reduction of bluff bodies is studied experimentally. The methods are: (i) Moving Surface Boundary-layer Control (MSBC) involving momentum injection through one or more rotating elements (light hollow cylinders); and (ii) tripping of the boundary-layer using judiciously located fences to interrupt pressure recovery. Wind tunnel tests with a two-dimensional wedge airfoil model suggest that injection of momentum can significantly delay separation of the boundary-layer resulting in a narrow wake and the associated reduction in the pressure drag. It also leads to a substantial increase in the lift at a given angle of attack resulting in a dramatic rise in the lift to drag ratio, from 2 to 80, under optimum conditions. Effectiveness of the momentum injection process is primarily governed by the gap-size, cylinder surface roughness and the ratio of the cylinder surface velocity (Uc) to the free stream velocity (U). A three-dimensional model of a rectangular prism and a 1/12 scale model of a typical tractor-trailer truck configuration show that both the MSBC and fence approaches are promising in reducing the aerodynamic resistance. A kit configuration is proposed for ease of implementation of the concepts on new and existing trailers. Road tests with a full scale cube-truck are recommended to assess effectiveness of the boundary-layer control procedures in reducing the drag during highway conditions.
Multi-Objective $H_{\infty}$ Control for String Stability of Cooperative Adaptive Cruise Control Systems
Creators: name: Kayacan, Erkan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Autonomous vehicle following systems are playing a decisive role to increase vehicle density on roads by shortening inter-vehicle time gaps. However, disturbance attenuation along a platoon of vehicles, i.e., string stability, is being a challenging task while time gap is getting shorter. In order to guarantee the string stability of a vehicle platoon, a multi-objective $H_{\infty}$ control formulation for adaptive cruise control and cooperative adaptive cruise control structures has been investigated in this paper. The proposed control method solves an optimization problem and achieves a controller that is able to provide not only the system stability, but also the string stability as distinct from the traditional $H_{\infty}$ control.
Hydrodynamic and rheology of active polar filaments
Creators: name: Liverpool, Tanniemola B.
name: Marchetti, M. Cristina
Publisher: name: arXiv
Year: 2007
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The cytoskeleton provides eukaryotic cells with mechanical support and helps them perform their biological functions. It is a network of semiflexible polar protein filaments and many accessory proteins that bind to these filaments, regulate their assembly, link them to organelles and continuously remodel the network. Here we review recent theoretical work that aims to describe the cytoskeleton as a polar continuum driven out of equilibrium by internal chemical reactions. This work uses methods from soft condensed matter physics and has led to the formulation of a general framework for the description of the structure and rheology of active suspension of polar filaments and molecular motors.
description: 30 pages, 5 figures. To appear in "Cell Motility", Peter Lenz, ed. (Springer, New York, 2007)
Correlating anomalies of the microwave sky: The Good, the Evil and the Axis
Creators: name: Rakic, Aleksandar
name: Schwarz, Dominik J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: At the largest angular scales the presence of a number of unexpected features has been confirmed by the latest measurements of the cosmic microwave background (CMB). Among them are the anomalous alignment of the quadrupole and octopole with each other as well as the stubborn lack of angular correlation on scales >60deg. We search for correlations between these two phenomena and demonstrate their absence. A Monte Carlo likelihood analysis confirms previous studies and shows that the joint likelihood of both anomalies is incompatible with the best-fit Lambda Cold Dark Matter model at >99.95% C.L. At the same time, a presumed special axis (the `Axis of Evil') identified on the microwave sky demands additional contributions to multipole power on top of the primordial standard inflationary ones. We find that the notion of a preferred axis in the CMB is misleading and inconsistent with three-year data from the Wilkinson Microwave Anisotropy Probe (WMAP). Rather the data require a preferred plane, whereupon the axis is just the normal direction to that plane. Rotational symmetry within that plane is inconsistent with the observations and is ruled out at high confidence.
description: 9 pages, 6 figures, 1 table; revtex4; v3: improved presentation and new comments
Analyzing the Impact of Molecular Re-Radiation on the MIMO Capacity in High-Frequency Bands
Creators: name: Hoseini, Sayed Amir
name: Ding, Ming
name: Hassan, Mahbub
name: Chen, Youjia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we show how the absorption and re-radiation energy from molecules in the air can influence the Multiple Input Multiple Output (MIMO) performance in high-frequency bands, e.g., millimeter wave (mmWave) and terahertz. In more detail, some common atmosphere molecules, such as oxygen and water, can absorb and re-radiate energy in their natural resonance frequencies, such as 60 GHz, 180 GHz and 320 GHz. Hence, when hit by electromagnetic waves, molecules will get excited and absorb energy, which leads to an extra path loss and is known as molecular attenuation. Meanwhile, the absorbed energy will be re-radiated towards a random direction with a random phase. These re-radiated waves also interfere with the signal transmission. Although, the molecular re-radiation was mostly considered as noise in literature, recent works show that it is correlated to the main signal and can be viewed as a composition of multiple delayed or scattered signals. Such a phenomenon can provide non-line-of-sight (NLoS) paths in an environment that lacks scatterers, which increases spatial multiplexing and thus greatly enhances the performance of MIMO systems. Therefore in this paper, we explore the scattering model and noise models of molecular re-radiation to characterize the channel transfer function of the NLoS channels created by atmosphere molecules. Our simulation results show that the re-radiation can increase MIMO capacity up to 3 folds in mmWave and 6 folds in terahertz for a set of realistic transmit power, distance, and antenna numbers. We also show that in the high SNR, the re-radiation makes the open-loop precoding viable, which is an alternative to beamforming to avoid beam alignment sensitivity in high mobility applications.
Investigation of Utilizing Fluent MPM in Microscopic Biological Applications
Creators: name: Chang, Kai
name: Chen, Foster
name: Mutyal, Jayesh
name: Radisch, Herbert
name: Tang, Zhongliang
name: Leonard, Edward F
Publisher: name: Columbia Undergraduate Science Journal
Year: 2007

description: The isolation of rare cells (those infrequently seen in the medium of interest) is important in diagnostic medicine. The use of antibody-coated surfaces to bind and capture cells of specific types has been extensively studied but collision frequency and probability of detachment before capture is complete are less studied and more important for the capture of rare cells. For surface capture to be effective, cells need to make physicochemical contact with the antibody coated entities. Because cells suspended in medium cannot be considered as point masses due to their large volumes, the usual computational fluid dynamics (CFD) techniques of tracking particle movement are insufficient to predict the frequency and duration of contact. The novel Macroscopic Particle Model (MPM) recently proposed by developers of the Fluent CFD package is used and extended to relate its parameters to collision frequencies and patterns known to occur in experimentally observed systems. This study explores and evaluates many of MPM’s parameters according to their effects on the numerical accuracy and overall similarity of the simulations to experimentally observed systems. The current MPM model shows some limitations when simulating real three dimensional systems; nevertheless, with the ongoing revisions to MPM by Fluent developers, we are optimistic about its accuracy and utility in the future.
description: Columbia Undergraduate Science Journal, Vol 2 (2007): Spring 2007