cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identification of Chimera using Machine Learning
Creators: name: Ganaie, M. A.
name: Ghosh, Saptarshi
name: Mendola, Naveen
name: Tanveer, M
name: Jalan, Sarika
Publisher: name: arXiv
Year: 2020
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Chimera state refers to coexistence of coherent and non-coherent phases in identically coupled dynamical units found in various complex dynamical systems. Identification of Chimera, on one hand is essential due to its applicability in various areas including neuroscience, and on other hand is challenging due to its widely varied appearance in different systems and the peculiar nature of its profile. Therefore, a simple yet universal method for its identification remains an open problem. Here, we present a very distinctive approach using machine learning techniques to characterize different dynamical phases and identify the chimera state from given spatial profiles generated using various different models. The experimental results show that the performance of the classification algorithms varies for different dynamical models. The machine learning algorithms, namely random forest, oblique random forest based on tikhonov, parallel-axis split and null space regularization achieved more than $96\% $ accuracy for the Kuramoto model. For the logistic-maps, random forest and tikhonov regularization based oblique random forest showed more than $90\%$ accuracy, and for the Hénon-Map model, random forest, null-space and axis-parallel split regularization based oblique random forest achieved more than $80\%$ accuracy. The oblique random forest with null space regularization achieved consistent performance (more than $83\%$ accuracy) across different dynamical models while the auto-encoder based random vector functional link neural network showed relatively lower performance. This work provides a direction for employing machine learning techniques to identify dynamical patterns arising in coupled non-linear units on large-scale, and for characterizing complex spatio-temporal patterns in real-world systems for various applications.
description: 20 Pages, 4 Figures; Comments welcome
HI and CO in Blue Compact Dwarf Galaxies: Haro 2 and Haro 4
Creators: name: Bravo-Alfaro, H.
name: Brinks, E.
name: Baker, A. J.
name: Walter, F.
name: Kunth, D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present VLA HI imaging of two blue compact dwarf (BCD) galaxies, Haro 2 and Haro 4, and of the spiral galaxy Haro 26, which is projected some 22' SW of Haro 4. We also show a map of the CO(1-0) distribution of Haro 2 obtained with the OVRO millimeter array, as well as derive an upper limit for CO(2-1) emission from Haro 4 obtained with the CSO. The HI data of Haro 2 reveal that the kinematical major axis lies perpendicular to the photometric major axis, indicating that the atomic hydrogen rotates about the major axis of the galaxy. This confirms earlier indications based on CCD photometry that Haro 2 is a dust-lane dE rather than a dIrr. We propose that the present neutral and molecular ISM configuration is due to recent gas accretion or a merger. The HI distribution and dynamics of Haro 4 and the neighboring spiral Haro 26 suggest that they are currently undergoing a tidal interaction, reinforcing the notion that interactions play an important role in triggering the star formation witnessed in Blue Compact Galaxies.
description: 25 pages and 17 figures, accepted for publication in Astronomical Journal
AGRICULTURAL EXPLOITATION AND SUBSIDIZATION: There Is An Explanation
Creators: name: Olson, Mancur
name: Olson, Mancur
Publisher: name: Unknown
Year: 1990
Subjects: Agricultural Finance
Public Economics

description: Agricultural products are normally underpriced and many types of urban production subsidized in developing countries. In developed countries agriculture normally shares in the system of subsidies, and in developed countries without comparative advantage in agriculture many farm products are overpriced. The explanation for this difference is related to opportunities for collective action. In developing countries, conditions are not favorable to collective action by farmers. In contrast, collective action is easier in developed countries, and protection makes possible large subsidies to agriculture in those countries with relatively little good land in relation to population.
Spatial segregation of massive clusters in dwarf galaxies
Creators: name: Elmegreen, Bruce G.
name: Adamo, A.
name: Boquien, M.
name: Bournaud, F.
name: Calzetti, D.
name: Cook, D. O.
name: Dale, D. A.
name: Duc, P. -A.
name: Elmegreen, D. M.
name: Fensch, J.
name: Grasha, K.
name: Kim, Hwi
name: Kahre, L.
name: Messa, M.
name: Ryon, J. E.
name: Sabbi, E.
name: Smith, L. J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The relative average minimum projected separations of star clusters in the Legacy ExtraGalactic UV Survey (LEGUS) and in tidal dwarfs around the interacting galaxy NGC 5291 are determined as a function of cluster mass to look for cluster-cluster mass segregation. Class 2 and 3 LEGUS clusters, which have a more irregular internal structure than the compact and symmetric class 1 clusters, are found to be mass segregated in low mass galaxies, which means that the more massive clusters are systematically bunched together compared to the lower mass clusters. This mass segregation is not present in high-mass galaxies nor for class 1 clusters. We consider possible causes for this segregation including differences in cluster formation and scattering in the shallow gravitational potentials of low mass galaxies.
description: accepted for ApJ Letters, 10 pages, 4 figures
New insights on unification of radio-loud AGN
Creators: name: Chiaberge, Marco
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The radio-loud AGN unification model associates powerful radio galaxies with radio-loud quasars and blazars. In analogy with the radio-quiet scheme, the nuclear regions of objects showing only narrow emission lines in their optical spectrum are thought to be obscured to our line-of-sight by a geometrically and optically thick dusty "torus". In objects showing broad emission lines we directly observe the innermost parsecs around the central black hole, i.e. the broad line region and the accretion disk. Radiation from the base of the relativistic jet dominates the overall emission of blazars, that are seen almost pole-on. Although the broad picture seems to be well established, there are several fundamental aspects that are still to be understood. HST studies have recently shed new light on many issues, from the properties of the nuclei to the structure of the host galaxies.
description: Invited review, to appear in Multiwavelength AGN Surveys, ed. R. Maiolino and R. Mujica (Singapore: World Scientific), 2004. 10 pages, 2 figures
Deep GMRT 610 MHz Observations of the ELAIS N1 Field : Catalogue and Source Counts
Creators: name: Ocran, E. F.
name: Taylor, A. R.
name: Vaccari, M.
name: Ishwara-Chandra, C. H.
name: Prandoni, I.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This is the first of a series of papers based on sensitive 610 MHz observations of the ELAIS N1 field using the Giant Metrewave Radio Telescope. We describe the observations, processing and source catalogue extraction from a deep image with area of 1.86\,deg$^{2}$ and minimum noise of $\sim$7.1\,$μ$Jy/beam. We compile a catalogue of 4290 sources with flux densities in the range 28.9\,$μ$Jy - 0.503\,Jy, and derive the Euclidean-normalized differential source counts for sources with flux densities brighter than $\rm{35.5\,μ\,Jy}$. Our counts show a flattening at 610 MHz flux densities below 1 mJy. Below the break the counts are higher than previous observations at this frequency, but generally consistent with recent models of the low-frequency source population. The radio catalogue is cross-matched against multi-wavelength data leading to identifications for 92\% and reliable redshifts for 72\% of our sample, with 19\% of the redshifts based on spectroscopy. For the sources with redshifts we use radio and X-ray luminosity, optical spectroscopy and mid-infrared colours to search for evidence of the presence of an Active Galactic Nucleus (AGN). We compare our identifications to predictions of the flux density distributions of star forming galaxies (SFGs) and AGN, and find a good agreement assuming the majority of the sources without redshifts are SFGs. We derive spectral index distributions for a sub-sample. The majority of the sources are steep spectra, with a median spectral index that steepens with frequency; $\mathrm{α^{325}_{610}\,=\,-0.80\,\pm\,0.29}$, $\mathrm{α^{610}_{1400}\,=\,-0.83\,\pm\,0.31}$ and $\mathrm{α^{610}_{5000}\,=\,-1.12\,\pm\,0.15}$.
description: 21 pages, 18 figures, 7 tables, accepted for publication in MNRAS
Ixodorhynchus liponyssoides Ewing
Creators: name: Paredes-León, Ricardo
name: García-Prieto, Luis
name: Guzmán-Cornejo, Carmen
name: León-Règagnon, Virginia
name: Pérez, Tila M.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Ixodorhynchidae
Ixodorhynchus
Ixodorhynchus liponyssoides

description: Ixodorhynchus liponyssoides Ewing
NA (A): Body surface.
CHIHUAHUA: 4.8 km N Chuhuichupa: NA (Fain & Yunker, 1972).
 Note: All the known species into Ixodorhynchidae are ectoparasites on snakes.
description: Published as part of Paredes-León, Ricardo, García-Prieto, Luis, Guzmán-Cornejo, Carmen, León-Règagnon, Virginia & Pérez, Tila M., 2008, Metazoan parasites of Mexican amphibians and reptiles, pp. 1-166 in Zootaxa 1904 on page 73
Urban Location and Housing Prices within a Hedonic Model
Creators: name: Ottensmann, John R.
name: Payton, Seth
name: Man, Joyce
name: Ottensmann, John R.
name: Payton, Seth
name: Man, Joyce
Publisher: name: Unknown
Year: 2008
Subjects: Community/Rural/Urban Development
Labor and Human Capital

description: A measure of location relative to employment is often included in hedonic housing price models. This is most often distance to the center, based on the monocentric model, which does not consider the decentralization of employment in urban areas. This paper tests the perfor-mance of alternative measures of location, considering both distance and time to the center and to multiple employment centers and measures of accessibility to employment and change in accessibility. The measures using multiple employment centers and accessibility perform better than simple distance to the center, with the combination of accessibility to employment and change in accessibility doing best.
Additional file 3: of Spatiotemporal mapping of RNA editing in the developing mouse brain using in situ sequencing reveals regional and cell-type-specific regulation
Creators: name: Lundin, Elin
name: Chenglin Wu
name: Widmark, Albin
name: Behm, Mikaela
name: Hjerling-Leffler, Jens
name: Chammiran Daniel
name: Öhman, Marie
name: Nilsson, Mats
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: Figure S1. Spatial marker transcript distribution. The spatial expression of the included marker transcripts in adult brain tissue. The scale bar is 1 mm.
Detection of hidden gratings through multilayer nanostructures using light and sound
Creators: name: Edward, Stephen
name: Zhang, Hao
name: Setija, Irwan
name: Verrina, Vanessa
name: Antoncecchi, Alessandro
name: Witte, Stefan
name: Planken, Paul
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on the detection of diffraction gratings buried below a stack of tens of 18 nm thick $\mathrm{SiO_2}$ and $\mathrm{Si_3N_4}$ layers and an optically opaque metal layer, using laser-induced, extremely-high frequency ultrasound. In our experiments, the shape and amplitude of a buried metal grating is encoded on the spatial phase of the reflected acoustic wave. This grating-shaped acoustic echo from the buried grating is detected by diffraction of a delayed probe pulse. The shape and strength of the time-dependent diffraction signal can be accurately predicted using a 2D numerical model. Surprisingly, our numerical calculations show that the diffracted signal strength is not strongly influenced by the number of dielectric layers through which the acoustic wave has to propagate. Replacing the $\mathrm{SiO_2}$/$\mathrm{Si_3N_4}$ layer stack with a single layer having an equivalent time-averaged sound velocity and average density, has only a small effect on the shape and amplitude of the diffracted signal as a function of time. Our results show that laser-induced ultrasound is a promising technique for sub-surface nano-metrology applications.
Properties of superconducting MgB_2 wires: "in-situ" versus "ex-situ" reaction technique
Creators: name: Pan, Alexey V
name: Zhou, Sihai
name: Liu, Huakun
name: Dou, Shixue
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have fabricated a series of iron-sheathed superconducting wires prepared by the powder-in-tube technique from (MgB_2)_{1-x}:(Mg+2B)_x initial powder mixtures taken with different proportions, so that x varies from 0 to 1. It turned out that "ex-situ" prepared wire (x = 0) has considerable disadvantages compared to all the other wires in which "in-situ" assisted (0 < x < 1) or pure "in-situ" (x = 1) preparation was used due to weaker inter-grain connectivity. As a result, higher critical current densities J_c were measured over the entire range of applied magnetic fields B_a for all the samples with x > 0. Pinning of vortices in MgB_2 wires is shown to be due to grain boundaries. J_c(B_a) behavior is governed by an interplay between the transparency of grain boundaries and the amount of "pinning" grain boundaries. Differences between thermo-magnetic flux-jump instabilities in the samples and a possible threat to practical applications are also discussed.
description: To be published in Supercond. Sci. Technol. (2003), in press
Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Results are presented from a search for events containing an excited lepton (electron or muon) produced in association with an ordinary lepton of the same flavor and decaying to a lepton and two hadronic jets. Both the production and the decay of the excited leptons are assumed to occur via a contact interaction with a characteristic energy scale $Λ$. The branching fraction for the decay mode under study increases with the mass of the excited lepton and is the most sensitive channel for very heavy excited leptons. The analysis uses a sample of proton-proton collisions collected by the CMS experiment at the LHC at $\sqrt{s} =$ 13 TeV, corresponding to an integrated luminosity of 77.4 fb$^{-1}$. The four-body invariant mass of the two lepton plus two jet system is used as the primary discriminating variable. No significant excess of events beyond the expectation for standard model processes is observed. Assuming that $Λ$ is equal to the mass of the excited leptons, excited electrons and muons with masses below 5.6 and 5.7 TeV, respectively, are excluded at 95% confidence level. These are the best limits to date.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-18-013 (CMS Public Pages)
Agricultural Transformation in Zambia: Alternative Institutional Models for Accelerating Agricultural Productivity Growth, and Commercialization
Creators: name: Chapoto, Antony
name: Haggblade, Steven
name: Hichaambwa, Munguzwe
name: Kabwe, Stephen
name: Longabaugh, Steven
name: Sitko, Nicholas J.
name: Tschirley, David L.
name: Chapoto, Antony
name: Haggblade, Steven
name: Hichaambwa, Munguzwe
name: Kabwe, Stephen
name: Longabaugh, Steven
name: Sitko, Nicholas J.
name: Tschirley, David L.
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Food Security and Poverty
subject: Marketing
subject: FOS: Economics and business
subject: Zambia
subject: Food Security
subject: Marketing
subject: Crop Production

description: This paper traces the trajectories of successful commercial smallholders operating under differing sets of market institutions. Analysis focuses on maize, cotton, and horticulture, three widely marketed crops with strikingly different market institutions. Maize receives intensive government input and marketing support. In contrast, cotton relies primarily on private contract farming schemes, while horticulture enjoys no large-scale institutional support from either the public or private sectors. Using a mix of quantitative and qualitative methods, the analysis aims to identify personal characteristics and institutional factors that enable smallholder transitions to high-productivity commercial agriculture.
Improved Upper Limits on Baryon-Number Violating Dinucleon Decays to Dileptons
Creators: name: Girmohanta, Sudhakantha
name: Shrock, Robert
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider effects of $n-\bar n$ oscillations and resultant matter instability due to dinucleons decays. We point out that existing upper bounds on the rates for the dinucleon decays $nn \to 2π^0$, $nn \to π^+π^-$, and $np \to π^+π^0$ imply upper bounds on the rates for dinucleon decays to dileptons $nn \to e^+ e^-$, $nn \to μ^+μ^-$, $nn \to ν_\ell \barν_\ell$, and $np \to \ell^+ ν_\ell$, where $\ell=e, \ μ, \ τ$. We present estimates for these upper bounds. Our bounds are substantially stronger than corresponding limits from direct searches.
description: 6 pages, 3 figures
[Pucha: Hoy Tairelsita cumple 26 años]
Creators: name: Manuel, Vázquez Portal
name: Vázquez Portal, Manuel
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2023
Subjects: Prison de Aguadores
Patrie
Pluralité
Avenir

description: Destinataire : Huerga Cedeño, Yolanda
description: Description : Lettre de Vázquez Portal à son épouse. L'auteur commence par évoquer l'anniversaire de sa fille Tairelsita. Il s'interroge ensuite sur la situation de Cuba (son éveil) et l'héritage laissé à la prochaine génération. Il développe sur les concepts de Patrie et de Pluralité. Il évoque José Martí, l'Humanité, le régime cubain, et le futur de Cuba.
description: Notes : Lettre envoyée depuis la Prison de Aguadores.
description: Source: Cote : MVP-B-2003-09-22
description: Source: Localisation du document : États-Unis, Miami (Floride)
MOESM3 of Prevention of post-splenectomy sepsis in patients with asplenia - a study protocol of a controlled trial
Creators: name: Bayrhuber, Marianne
name: Anka, Natascha
name: Camp, Johannes
name: Glattacker, Manuela
name: Farin, Erik
name: Rieg, Siegbert
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3: Table S3. Operationalization of the PrePSS-score parameters after weighting of the parameters.
Geckobia bataviensis Vitzthum 1926
Creators: name: Paredes-León, Ricardo
name: García-Prieto, Luis
name: Guzmán-Cornejo, Carmen
name: León-Règagnon, Virginia
name: Pérez, Tila M.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Pterygosomatidae
Geckobia
Geckobia bataviensis

description: Geckobia bataviensis Vitzthum
 New records:
Squamata (L, A): Body surface.
 CAMPECHE: Playa Bonita: Hemidactylus frenatus (CNAC004482). GUERRERO: Acapulco, 300 m NE Barra Vieja: Hemidactylus frenatus (CNAC004466–004469; 004709); Acapulco: Hemidactylus frenatus (CNAC005555–005559); Petacalco: Hemidactylus frenatus (CNAC004692–004699); Tixtla: Hemidactylus frenatus (CNAC004700–004701). TABASCO: Villahermosa: Hemidactylus frenatus (CNAC004485).
 TAMAULIPAS: Ciudad Madero, Refinería Francisco I. Madero: Hemidactylus turcicus (CNAC004475– 004481; 004714–004716); Ejido San Pedrito: Hemidactylus frenatus (CNAC004711). JALISCO: Tomatlán: Hemidactylus frenatus (CNAC004470; 004710). OAXACA: Putla de Guerrero: Hemidactylus frenatus (CNAC004471; 004712); San Pedro Tututepec, La Luz: Hemidactylus frenatus (CNAC004472–004474; 004713); Asunción Ixtaltepec, Nizanda: Hemidactylus frenatus (CNAC004483); Asunción Ixtaltepec, en el pueblo: Hemidactylus frenatus (CNAC004484); Juchitán: Hemidactylus frenatus (CNAC004690–004691); Bajos de Coyula: Hemidactylus frenatus (CNAC004703–004705); Barra de la Cruz: Hemidactylus frenatus (CNAC004706). VERACRUZ: Tierra Blanca: Hemidactylus frenatus (CNAC004702). YUCATÁN: 1.4 km S, 7.5 km W Chixchulub Puerto: Hemidactylus frenatus (CNAC004707); 6 km N, 0.3 km E Celestún: Hemidactylus frenatus: (CNAC004708).
 Specimens deposited: CNAC.
 Note: The specimens from Acapulco, Guerrero probably correspond in part to the record cited as Pterygosomatidae by Hoffmann and López-Campos (2000) from Guerrero.
description: Published as part of Paredes-León, Ricardo, García-Prieto, Luis, Guzmán-Cornejo, Carmen, León-Règagnon, Virginia & Pérez, Tila M., 2008, Metazoan parasites of Mexican amphibians and reptiles, pp. 1-166 in Zootaxa 1904 on page 74
Local Ordering in the Pseudogap State of the High-T$_c$ Superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$
Creators: name: Vershinin, Michael
name: Misra, Shashank
name: Ono, S.
name: Abe, Y.
name: Ando, Yoichi
name: Yazdani, Ali
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report atomic scale characterization of the pseudogap state in a high-T$_c$ superconductor, Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$. The electronic states at low energies within the pseudogap exhibit spatial modulations having an energy-independent incommensurate periodicity. These patterns, which are oriented along the copper-oxygen bond directions, appear to be a consequence of an electronic ordering phenomenon--the observation of which correlates with the pseudogap in the density of electronic states. Our results provide a stringent test for various ordering scenarios in the cuprates, which have been central in the debate on the nature of the pseudogap and the complex electronic phase diagram of these compounds.
description: To appear on Science Express, http://www.sciencemag.org/sciencexpress/recent.shtml, 19 pages, 4 figures, pdf only
title: Bastard
Creators: name: McDowell, Rashad
Publisher: name: Old Dominion University Libraries
Year: 2021

description: Bastard is a collection of eleven memoirs and personal essays that center on the question ‘what does it mean to be a parent?’ The narrator of the collection looks inward at his own experience with trauma, while also trying to situate the origin of the trauma in the relationship with his grandmother and father. Themes of memory, race, escape, and overcoming adversity run throughout the collection. There are very graphic depicts of child abuse in several pieces, as well as candid conversations about race and racism. By the final piece, the answer to the central question has been reached and the narrator has embarked on a journey to be a better parent. This collection draws inspiration from writers such as Richard Wright, Mary Karr, Harriet Jacobs, and Maxine Hong Kingston.
Spectroscopically Identified Cataclysmic Variables from LAMOST survey. I. The Sample
Creators: name: Hou, Wen
name: Luo, A-Li
name: Li, Yin-Bi
name: Qin, Li
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A sample of Cataclysmic Variables (CVs) is presented including spectroscopically identified 380 spectra of 245 objects, of which 58 CV candidates are new discoveries. The BaggingTopPush and the Random Forest algorithms are applied to the Fifth Data Release (DR5) of LAMOST to retrieve CVs with strong emission lines and with broad absorption lines respectively. Based on spectroscopic classification, 134 dwarf novae, 41 nova-like variables and 19 magnetic CVs are identified from the sample. In addition, 89 high--inclination systems and 33 CVs showing companion stars are recognized and discussed for their distinct spectral characteristics. Comparisons between CVs from LAMOST and from published catalogs are made in spatial and magnitude distribution, and the difference of their locus in Gaia color--absolute magnitude diagram (CaMD) are also investigated. More interestingly, for two dwarf novae observed through LAMOST and SDSS in different epoch, their spectra both in quiescence phase and during outburst are exhibited.
description: Accepted by AJ, 21 pages, 17 figures
Time-resolved dynamics of the superconducting two-gap state in MgB2 thin films
Creators: name: Xu, Y.
name: Khafizov, M.
name: Satrapinsky, L.
name: Kus, P.
name: Plecenik, A.
name: Sobolewski, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Femtosecond pump-probe studies show that carrier dynamics in MgB2 films is governed by the sub-ps electron-phonon (e-ph) relaxation present at all temperatures, the few-ps e-ph process well pronounced below 70 K, and the sub-ns superconducting relaxation below Tc. The amplitude of the superconducting component versus temperature follows the superposition of the isotropic dirty gap and the 3-dimensional gap dependences, closing at two different Tc values. The time constant of the few-ps relaxation exhibits a double-divergence at temperatures corresponding to the Tc's of the two gaps.
description: Accepted for publication in Phys.Rev.Lett
Parasecia kansasensis
Creators: name: Paredes-León, Ricardo
name: García-Prieto, Luis
name: Guzmán-Cornejo, Carmen
name: León-Règagnon, Virginia
name: Pérez, Tila M.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Trombiculidae
Parasecia
Parasecia kansasensis

description: Parasecia kansasensis (Loomis)
 New record:
Squamata (L): Body surface.
 YUCATÁN: Carr. Yaxcabá-Tahdzibichén: Coleonyx elegans (CNAC004689).
 Specimen deposited: CNAC.
 Notes: Loomis (1956) recorded this species in the states of Coahuila and Durango without locality or host data.
description: Published as part of Paredes-León, Ricardo, García-Prieto, Luis, Guzmán-Cornejo, Carmen, León-Règagnon, Virginia & Pérez, Tila M., 2008, Metazoan parasites of Mexican amphibians and reptiles, pp. 1-166 in Zootaxa 1904 on page 83
Simple test for high Jc and low Rs superconducting thin films
Creators: name: Sundaresan, A.
name: Tanaka, Y.
name: Iyo, A.
name: Kusunoki, M.
name: Ohshima, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A simple method, fishing high-Tc superconductor thin films out of liquid nitrogen bath by a permanent magnet (field > Hc1) due to the effect of high flux pinning, has been suggested to identify films having high critical current density (Jc > 106 A/cm2 at 77 K) and thus a low microwave surface resistance (Rs). We have demonstrated that a Nd-Fe-B magnet, having a maximum field of ~ 0.5 T, could fish out Tl-1223 superconducting thin films on LSAT substrate with a thickness of ~ 5000 Angstrong having Jc > 1 MA/cm2 (at 77 K) whereas it could not fish out other films with Jc < 0.1 MA/cm2 at 77 K. The fished out films exhibit Rs values 237 - 245 ((at 77 K and 10 GHz, which is lower than that (Rs = 317 (() of the best YBCO film at the same temperature and frequency. On the other hand, the non-fishable films show very high Rs values. This method is a very simple tool to test for high Jc and good microwave properties of superconducting films of large area which otherwise require a special and expensive tool.
description: 5 pages including 2 figures, to be published as Rapid Commun. in Supercond. Sci. Technol
Mortgage Lending Disparities in Metropolitan Buffalo: Implications for Community Reinvestment Policy
Creators: name: Silverman, Robert Mark
name: Silverman, Robert Mark
Publisher: name: Unknown
Year: 2008
Subjects: Community/Rural/Urban Development
Research Methods/ Statistical Methods

description: This article examines patterns of mortgage lending in metropolitan Buffalo, New York. The analysis is based on 1999-2002 HMDA data and 2000 Census data for metropolitan Buffa-lo. Mortgage lending patterns in census tracts are compared using descriptive statistics, GIS mapping, and multiple regression. The results from this analysis indicate that disparities in mortgage lending between census tracts are attributable to differences in: educational at-tainment, neighborhood socioeconomic distress, residential stability, and the age of neigh-borhood housing stock. It is noteworthy that after controlling for other variables, race and core city location did not significantly affect mortgage lending patterns. The findings from this analysis indicate that disinvestment is no longer confined to minority communities in core cities. Instead, it is becoming a more general phenomenon in metropolitan areas. Policy recommendations are forwarded in light of the findings from this research.
MOESM2 of Prevention of post-splenectomy sepsis in patients with asplenia - a study protocol of a controlled trial
Creators: name: Bayrhuber, Marianne
name: Anka, Natascha
name: Camp, Johannes
name: Glattacker, Manuela
name: Farin, Erik
name: Rieg, Siegbert
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Table S2. Results of the expert survey.
Proximity effect in ultrathin Pb/Ag multilayers within the Cooper limit
Creators: name: Bourgeois, O.
name: Frydman, A.
name: Dynes, R. C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on transport and tunneling measurements performed on ultra-thin Pb/Ag (strong coupled superconductor/normal metal) multilayers evaporated by quench condensation. The critical temperature and energy gap of the heterostructures oscillate with addition of each layer, demonstrating the validity of the Cooper limit model in the case of multilayers. We observe excellent agreement with a simple theory for samples with layer thickness larger than 30Å. Samples with single layers thinner than 30Ådeviate from the Cooper limit theory. We suggest that this is due to the "inverse proximity effect" where the normal metal electrons improve screening in the superconducting ultrathin layer and thus enhance the critical temperature.
description: 4 pages, 4 figures
Do New Lottery Games Stimulate Retail Activity? Evidence from West Virginia Counties
Creators: name: Skidmore, Mark
name: Serkan Tosun, Mehmet
name: Skidmore, Mark
name: Serkan Tosun, Mehmet
Publisher: name: Unknown
Year: 2008
Subjects: Financial Economics
Productivity Analysis

description: In this study we examine the impact of lottery sales and the introduction of new lottery games on the retail activity using panel data on all West Virginia counties over the 1987-2001 period. We find that the introduction of video lottery spurred retail activity in those counties that have been granted the authority to offer video lottery. Empirical analysis also suggests that there is a positive relationship between lottery sales and retail activity, and that generally the introduction of new lotteries or lottery games in neighboring states reduced retail activity in West Virginia border counties.
Synthetic stellar populations: single stellar populations, stellar interior models and primordial proto-galaxies
Creators: name: Jimenez, Raul
name: MacDonald, James
name: Dunlop, James
name: Padoan, Paolo
name: Peacock, John
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new set of stellar interior and synthesis models for predicting the integrated emission from stellar populations in star clusters and galaxies of arbitrary age and metallicity. This work differs from existing spectral synthesis codes in a number of important ways, namely (1) the incorporation of new stellar evolutionary tracks, with sufficient resolution in mass to sample rapid stages of stellar evolution; (2) a physically consistent treatment of evolution in the HR diagram, including the approach to the main sequence and the effects of mass loss on the giant and horizontal-branch phases. Unlike several existing models, ours yield consistent ages when used to date a coeval stellar population from a wide range of spectral features and colour indexes. We rigorously discuss degeneracies in the age-metallicity plane and show that inclusion of spectral features blueward of 4500 AA, suffices to break any remaining degeneracy and that with moderate S/N spectra (10 per 20AA, resolution element) age and metallicity are not degenerate. We also study sources of systematic errors in deriving the age of a single stellar population and conclude that they are not larger than 10-15%. We illustrate the use of single stellar populations by predicting the colors of primordial proto-galaxies and show that one can first find them and then deduce the form of the IMF for the early generation of stars in the universe. Finally, we provide accurate analytic fitting formulas for ultra fast computation of colors of single stellar populations. The models can be found at http://www.physics.upenn.edu/~raulj
description: MNRAS in press
RapidStream IR: Infrastructure for FPGA High-Level Physical Synthesis
Creators: name: Lau, Jason
name: Xiao, Yuanlong
name: Xie, Yutong
name: Chi, Yuze
name: Song, Linghao
name: Xiang, Shaojie
name: Lo, Michael
name: Zhang, Zhiru
name: Cong, Jason
name: Guo, Licheng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Hardware Architecture (cs.AR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: 68M99

description: The increasing complexity of large-scale FPGA accelerators poses significant challenges in achieving high performance while maintaining design productivity. High-level synthesis (HLS) has been adopted as a solution, but the mismatch between the high-level description and the physical layout often leads to suboptimal operating frequency. Although existing proposals for high-level physical synthesis, which use coarse-grained design partitioning, floorplanning, and pipelining to improve frequency, have gained traction, they lack a framework enabling (1) pipelining of real-world designs at arbitrary hierarchical levels, (2) integration of HLS blocks, vendor IPs, and handcrafted RTL designs, (3) portability to emerging new target FPGA devices, and (4) extensibility for the easy implementation of new design optimization tools.
 We present RapidStream IR, a practical high-level physical synthesis (HLPS) infrastructure for representing the composition of complex FPGA designs and exploring physical optimizations. Our approach introduces a flexible intermediate representation (IR) that captures interconnection protocols at arbitrary hierarchical levels, coarse-grained pipelining, and spatial information, enabling the creation of reusable passes for design frequency optimizations. RapidStream IR improves the frequency of a broad set of mixed-source designs by 7% to 62%, including large language models and genomics accelerators, and is portable to user-customizable new FPGA platforms. We further demonstrate its extensibility through case studies, showcasing the ability to facilitate future research.
A Demographically Augmented Shift-Share Employment Analysis: An Application to Canadian Employment Patterns
Creators: name: Brox, James A.
name: Carvalho, Emanuel
name: Brox, James A.
name: Carvalho, Emanuel
Publisher: name: Unknown
Year: 2008
Subjects: Labor and Human Capital

description: In this paper we illustrate how the traditional shift-share model may be readily ex-panded to analyse disaggregate data on various age-sex cohorts of the labour market. Further we show that such results can be misleading unless age-sex-specific labour-force changes are explicitly considered. We then analyze the performance of the Canadian regional labour mar-kets as an example of the proposed procedure.
Urban Consumption Patterns of Livestock Products in Zambia and Implications for Policy
Creators: name: Hichaambwa, Munguzwe
name: Hichaambwa, Munguzwe
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Marketing
subject: FOS: Economics and business
subject: Zambia
subject: urbanization
subject: food marketing systems
subject: Food Security

description: Rapid urbanization in Zambia means that increasingly heavy demands are being placed on urban food marketing systems. Investment in these systems has been woefully inadequate for many decades, creating supply bottlenecks and health hazards that work against the interests of both farmers and consumers. Understanding urban food expenditure patterns is a first step in addressing these problems. The Food Security Research Project (FSRP) which is now the Indaba Agricultural Policy Research Institute (IAPRI) has conducted considerable work on urban consumption patterns of stables and fresh produce as part of on-going research and outreach work in the respective value chains1. However, no work has yet been done on livestock products and thus this study seeks to understand urban consumption and purchasing patterns of livestock products and how these vary by income level and across key cities of the country.
Jamming with tunable roughness
Creators: name: Ikeda, Harukuni
name: Brito, Carolina
name: Wyart, Matthieu
name: Zamponi, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce a new model to study the effect of surface roughness on the jamming transition. By performing numerical simulations, we show that for a smooth surface, the jamming transition density and the contact number at the transition point both increase upon increasing asphericity, as for ellipsoids and spherocylinders. Conversely, for a rough surface, both quantities decrease, in quantitative agreement with the behavior of frictional particles. Furthermore, in the limit corresponding to the Coulomb friction law, the model satisfies a generalized isostaticity criterion proposed in previous studies. We introduce a counting argument that justifies this criterion and interprets it geometrically. Finally, we propose a simple theory to predict the contact number at finite friction from the knowledge of the force distribution in the infinite friction limit.
description: 6 pages, 6 figures
Spectral form factors of clean and random quantum Ising chains
Creators: name: Nivedita
name: Shackleton, Henry
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We compute the spectral form factor of two integrable quantum-critical many body systems in one spatial dimension. The spectral form factor of the quantum Ising chain is periodic in time in the scaling limit described by a conformal field theory; we also compute corrections from lattice effects and deviation from criticality. Criticality in the random Ising chain is described by rare regions associated with a strong randomness fixed point, and these control the long time limit of the spectral form factor.
description: 21 pages, 7 figures
Experimental Validation of a Real-Time Optimal Controller for Coordination of CAVs in a Multi-Lane Roundabout
Creators: name: Chalaki, Behdad
name: Beaver, Logan E.
name: Malikopoulos, Andreas A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Roundabouts in conjunction with other traffic scenarios, e.g., intersections, merging roadways, speed reduction zones, can induce congestion in a transportation network due to driver responses to various disturbances. Research efforts have shown that smoothing traffic flow and eliminating stop-and-go driving can both improve fuel efficiency of the vehicles and the throughput of a roundabout. In this paper, we validate an optimal control framework developed earlier in a multi-lane roundabout scenario using the University of Delaware's scaled smart city (UDSSC). We first provide conditions where the solution is optimal. Then, we demonstrate the feasibility of the solution using experiments at UDSSC, and show that the optimal solution completely eliminates stop-and-go driving while preserving safety.
description: 6 Pages, 4 Figures, 1 table
From positive geometries to a coaction on hypergeometric functions
Creators: name: Abreu, Samuel
name: Britto, Ruth
name: Duhr, Claude
name: Gardi, Einan
name: Matthew, James
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Number Theory (math.NT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It is well known that Feynman integrals in dimensional regularization often evaluate to functions of hypergeometric type. Inspired by a recent proposal for a coaction on one-loop Feynman integrals in dimensional regularization, we use intersection numbers and twisted homology theory to define a coaction on certain hypergeometric functions. The functions we consider admit an integral representation where both the integrand and the contour of integration are associated with positive geometries. As in dimensionally-regularized Feynman integrals, endpoint singularities are regularized by means of exponents controlled by a small parameter $ε$. We show that the coaction defined on this class of integral is consistent, upon expansion in $ε$, with the well-known coaction on multiple polylogarithms. We illustrate the validity of our construction by explicitly determining the coaction on various types of hypergeometric ${}_{p+1}F_p$ and Appell functions.
MOESM1 of A pipeline to create predictive functional networks: application to the tumor progression of hepatocellular carcinoma
Creators: name: Folschette, Maxime
name: Legagneux, Vincent
name: Poret, Arnaud
name: Lokmane Chebouba
name: Carito Guziolowski
name: Théret, Nathalie
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer

description: Additional file 1 Additional tables, figures and explanations. This PDF file contains additional figures and tables related to all parts of this manuscript, along with a detailed explanation of the KEGG graph extraction that was summarized in “Building a signed interaction graph from the KEGG Pathway database” section.
title: Metaphysics: the proverbial elephant in the room
Creators: name: Perret, Nicole
name: Sonnenschein, Carlos
name: Soto, Ana M.
Publisher: name: Organisms. Journal of Biological Sciences
Year: 2017

description: The increasing number of reports on the irreproducibility of epidemiological and experimental data has motivated explanations addressing its sociological and ethical implications. Regrettably, philosophical and theoretical issues such as the construction of objectivity or the role of theory have not been addressed in those reports. These issues are central to the practice of scientific research. The uncritical acceptance of ideas borrowed from mathematical theories of information and associated ideologies force interpretations of experimental results attributing a privileged causal role to molecules and to genes. In order to avoid these shortcomings, biologists should make explicit their metaphysical assumptions and the theoretical principles that guide their research.
description: Organisms. Journal of Biological Sciences, V. 1, N. 1 (2017)
Unsupervised Natural Question Answering with a Small Model
Creators: name: Andrews, Martin
name: Witteveen, Sam
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The recent (2019-02) demonstration of the power of huge language models such as GPT-2 to memorise the answers to factoid questions raises questions about the extent to which knowledge is being embedded directly within these large models. This short paper describes an architecture through which much smaller models can also answer such questions - by making use of 'raw' external knowledge. The contribution of this work is that the methods presented here rely on unsupervised learning techniques, complementing the unsupervised training of the Language Model. The goal of this line of research is to be able to add knowledge explicitly, without extensive training.
description: Accepted paper for FEVER workshop at EMNLP-IJCNLP 2019. (4 pages + references)
Additional file 21 of Conversion between 100-million-year-old duplicated genes contributes to rice subspecies divergence
Creators: name: Wei, Chendan
name: Wang, Zhenyi
name: Wang, Jianyu
name: Teng, Jia
name: Shen, Shaoqi
name: Xiao, Qimeng
name: Bao, Shoutong
name: Feng, Yishan
name: Zhang, Yan
name: Li, Yuxian
name: Sun, Sangrong
name: Yue, Yuanshuai
name: Wu, Chunyang
name: Wang, Yanli
name: Zhou, Tianning
name: Xu, Wenbo
name: Yu, Jigao
name: Wang, Li
name: Wang, Jinpeng
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 21: Supplemental Text. Gene conversion and occurrence patterns.