cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Expectation and memory encoding II : How object-location expectancy in visual scenes influences memory formation
Creators: name: Gurunandan, Kshipra
name: Avnee Jain
name: Greve, Andrea
name: Henson, Richard
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Social and Behavioral Sciences

description: This study investigates how schemas influence the formation of new memories. Previous research has shown that information congruent or incongruent with schemas are better remembered than unrelated information. The SLIMM framework predicts a U-shaped memory function based on schema congruency, and recent studies have supported this prediction using experimentally trained rules and immersive virtual reality stimuli (Greve et al., 2019; Quent et al., 2022). SLIMM also suggests that different memory types are associated with each end of the curve, supported by distinct brain systems: the medial temporal lobe (MTL) system and the ventral medial prefrontal cortex (vmPFC). This study is a replication of our previously preregistered study (see: https://osf.io/9py2j), which used static images instead of immersive virtual reality. In line with Quent et al. (2022), our previous results confirmed the predicted u-shape function that shows information congruent and incongruent with schemas is better remembered than unrelated information. However, to ensure a more accurate assessment of participant-specific expectancy levels, a small procedural change is introduced in this replication study. Expectancy ratings are now collected at the time of encoding rather than after retrieval, as participants' ratings may have been influenced by the prior encoding and retrieval of all object-location scenes. All other aspects of the experiment remain unchanged.
A two-dimensional space-time terahertz memory in bulk SrTiO3
Creators: name: Blanchard, F.
name: Nkeck, J. E.
name: Guiramand, L.
name: Zibod, S.
name: Dolgaleva, K.
name: Arikawa, T.
name: Tanaka, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Ferroelectric materials offer unprecedented ultrafast responses and are of great interest for the development of new polarizable media under the influence of an electromagnetic field. Recent research efforts have demonstrated the role of optical excitation and intense terahertz (THz) pulses in inducing a polar order and revealing a hidden phase transition in SrTiO3 (STO), respectively. Here we show that the surface of STO crystals at room temperature act as ultrafast sensors that enable sub-picosecond switching through the Kerr effect and multi-ps recording of polar THz intensity with spatial resolution below the diffraction limit through dipole alignment relaxation. The contrast sensitivity and spatial resolution achieved by in the STO sensor are significantly superior to those of present-day near-field THz sensors based on the linear Pockels effect, and more importantly, its ability to remain polarized for several picoseconds opens the door to a new strategy for building an ultrafast space-time THz memory.
Stygotorrenticola, gen. nov.
Creators: name: Pešić, Vladimir
name: Gerecke, Reinhard
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Torrenticolidae
Stygotorrenticola

description: Genus Stygotorrenticola gen. nov.
Diagnosis. Ocular pigment absent; shoulder platelets fused to the dorsal plate, frontal platelets fused to each other to form a narrow, transverse platelet; Cxgl-4 subapical; suture lines Cx-I/ -II complete, not meeting in the medial line, but separately ending at anterior genital field margin; suture line Cx-II/III developed only in lateral quarter; suture lines of Cx-IV not visible; excretory pore on the limit of primary sclerotization near posterior idiosoma margin; P-2 with a stout, pointed peg-like seta on a pointed, anteriorly directed distoventral projection; P-3 with similar seta on a pointed projection in the centre of segment; P-4 slender, ventral margin with 5 setae; chelicera basal segment inflated in the centre, claw short and curved; gnathosomal rostrum shortened, ventrally not evidently set off from base.
Type species. Stygotorrenticola coniseta sp. nov.
Etymology. “ stygo ” (meaning adapted to living underground and referring to the River Styx in Greek and Roman mythology) is prefixed to the existing genus name Torrenticola.
Remarks. Stygotorrenticola differs from all other torrenticolid genera in (1) absence, in both sexes, of a medial suture Cx-II+III, and (2) presence of strong, peg-like setae on ventral protuberances of P-2/-3. The genus is similar to Monatractides in the stout gnathosoma with short rostrum, but to Torrenticola in the enlarged, U-shaped gnathosomal bay and the presence of distoventral projections on P-2/-3.
Possibly, the development of peg-like palp setae (probably of sensory function) can be considered a compensation for light sensitivity due to reduction of lateral eyes.
description: Published as part of Pešić, Vladimir & Gerecke, Reinhard, 2014, Water mites from caves of the Ha Giang province, northern Vietnam (Acari: Hydrachnidia), pp. 367-380 in Zootaxa 3774 (4) on page 371, DOI: 10.11646/zootaxa.3774.4.5, http://zenodo.org/record/229333
QUANTIFYING HEPATIC FIBROSIS ON MURINE MODELS: HOW TO OBTAIN REPRESENTATIVE RESULTS IN A LESS LABORIOUS WAY
Creators: name: Catarino, José
name: Viegas, Inês
name: Rodrigues, Joana
name: Pinto, Marta
name: Faísca, Pedro
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2019

description: In biomedical research, quantification of histological images is often required. Many of the methods used are time-consuming, laborious, originate variable results and are difficult to replicate. This paper is aimed towards finding a more objective, reproducible and easy to perform method to obtain representative results in murine models of hepatic fibrosis using ImageJ software. To do so on a liver fibrosis model, the percentages of fibrotic lesion obtained in an entire section and in several different magnifications were compared. No statistically significant differences were found (p> 0.05), but the correlation was stronger between the results obtained in the entire section photograph and the two photographs at 40x (r = 0.963). Using ImageJ facilitated the definition of a methodology that originated representative results on a liver section and at the same time allowed objective measurement in a reproducible and less laborious way.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 9 (2018)
Pairing gaps and Fermi energies at scission for 296Lv alpha-decay
Creators: name: Mirea, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The pairing corrections, the single particle occupation numbers, are investigated within density-dependent delta interaction formalism for pairing residual interactions. The potential barrier is computed in the framework of the macroscopic-microscopic model. The microscopic part is based on the Woods-Saxon two center shell model. The alpha-decay of a superheavy element is treated, by paying a special attention to the region of the scission configurations. The sequence of nuclear shapes follows the superasymmetric fission path for alpha decay. It was found that the pairing gaps of the states that reach asymptotically the potential well of the alpha particle have large values at scission but become zero after scission. The 1s1/2 single particle levels of the nascent alpha particle are fully occupied while the superior levels are empties in the scission region and remains in the same states during the penetration of the Coulomb barrier. The projection of the numbers of particle on the two fragments are obtained naturally. At scission, the nascent alpha particle forms a very bound cluster.
QUANTIFYING MYOCARDIAL FIBROSIS ON MURINE MODEL USING IMAGEJ
Creators: name: Catarino, José
name: Viegas, Inês
name: Rodrigues, Joana
name: Pinto, Marta
name: Bota, Gonçalo
name: Cravo, Francisco
name: Lúcio, Filipa
name: Faisca, Pedro
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2019

description: Quantification of histological images is a task often required in biomedical research. Many of the methods used are time-consuming, difficult to replicate and subjective. This work aimed to describe and validate a more objective, reproducible and easy to perform methodology to measure murine heart fibrosis, using ImageJ software. For this matter, a macro was created and validated for its intra and inter-observational reproducibility. No significant differences were found between the results obtained manually and with the macro (p> 0.05). Regarding the interobserver variability, the macro proved to be a less variable method by presenting higher correlation coefficients between observers when compared with the manual measurement. With these results, we were able to define and describe a methodology that outputs objective and replicable results in a less laborious way.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 9 (2018)
Planck Satellite Constraints on Pseudo-Nambu--Goldstone Boson Quintessence
Creators: name: Smer-Barreto, Vanessa
name: Liddle, Andrew R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Pseudo-Nambu-Goldstone Boson (PNGB) potential, defined through the amplitude $M^4$ and width $f$ of its characteristic potential $V(ϕ) = M^4[1 + \cos(ϕ/f)]$, is one of the best-suited models for the study of thawing quintessence. We analyze its present observational constraints by direct numerical solution of the scalar field equation of motion. Observational bounds are obtained using Supernovae data, cosmic microwave background temperature, polarization and lensing data from {\it Planck}, direct Hubble constant constraints, and baryon acoustic oscillations data. We find the parameter ranges for which PNGB quintessence gives a viable theory for dark energy. This exact approach is contrasted with the use of an approximate equation-of-state parametrization for thawing theories. We also discuss other possible parameterization choices, as well as commenting on the accuracy of the constraints imposed by {\it Planck} alone. Overall our analysis highlights a significant prior dependence to the outcome coming from the choice of modelling methodology, which current data are not sufficient to override.
description: Analysis updated to Planck 2015 and JLA supernova data, and new investigations of model priors added
Dependency Parsing with an Extended Finite-State Approach
Creators: name: Oflazer, Kemal
Publisher: name: Figshare
Year: 2018
Subjects: subject: Applied Computer Science
subject: 80107 Natural Language Processing
subject: FOS: Computer and information sciences
subject: 200402 Computational Linguistics
subject: FOS: Languages and literature

description: This article presents a dependency parsing scheme using an extended finite-state approach. The parser augments input representation with “channels” so that links representing syntactic dependency relations among words can be accommodated and iterates on the input a number of times to arrive at a fixed point. Intermediate configurations violating various constraints of projective dependency representations such as no crossing links and no independent items except sentential head are filtered via finite-state filters. We have applied the parser to dependency parsing of Turkish.
Complexo Gengivite-Estomatite-Faringite felino - A doença e o diagnóstico
Creators: name: Santos, Bárbara
name: Requicha, João
name: Pires, Maria Dos Anjos
name: Viegas, Carlos
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2016

description: O Complexo Gengivite-Estomatite-Faringite Felino é uma doença frequente nestes animais e caracteriza-se por uma intensa inflamação da cavidade oral e das gengivas. Afeta, principalmente, gatos adultos com cerca de 8 anos de idade, não havendo predisposição sexual. A etiologia não é claramente conhecida, mas suspeita-se que determinadas bactérias, alguns vírus, a alimentação, o ambiente e episódios de stresse, ou uma conjugação destes fatores com fatores genéticos, estejam na origem desta doença. Atualmente, crê-se que a causa mais importante seja o calicivírus felino. Os sinais clínicos mais frequentemente visualizados são inapetência, disfagia, anorexia, ptialismo, halitose e perda de peso. Para a obtenção do diagnóstico definitivo realiza-se a pesquisa de calicivírus por PCR (reação em cadeia da polimerase) e a eletroforese de proteínas para evidenciação de gamopatia policlonal.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 8 (2016)
The Gaia-ESO Survey: Tracing interstellar extinction
Creators: name: Schultheis, M.
name: Kordopatis, G.
name: Recio-Blanco, A.
name: de Laverny, P.
name: Hill, V.
name: Gilmore, G.
name: Alfaro, E. J.
name: Costado, M. T.
name: Bensby, T.
name: Damiani, F.
name: Feltzing, S.
name: Flaccomio, E.
name: Lardo, C.
name: Jofre, P.
name: Prisinzano, L.
name: Zaggia, S.
name: Jimenez-Esteban, F.
name: Morbidelli, L.
name: Lanzafame, A. C.
name: Hourihane, A.
name: Worley, C.
name: Francois, P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Large spectroscopic surveys have enabled in the recent years the computation of three-dimensional interstellar extinction maps thanks to accurate stellar atmospheric parameters and line-of-sight distances. Such maps are complementary to 3D maps extracted from photometry, allowing a more thorough study of the dust properties. Our goal is to use the high-resolution spectroscopic survey Gaia-ESO in order to obtain with a good distance resolution the interstellar extinction and its dependency as a function of the environment and the Galactocentric position. We use the stellar atmospheric parameters of more than 5000 stars, obtained from the Gaia-ESO survey second internal data release, and combine them with optical (SDSS) and near-infrared (VISTA) photometry as well as different sets of theoretical stellar isochrones, in order to calculate line-of-sight extinction and distances. The extinction coefficients are then compared with the literature to discuss their dependancy on the stellar parameters and position in the Galaxy. Within the errors of our method, our work does not show that there is any dependence of the interstellar extinction coefficient on the atmospheric parameters of the stars. We do not find any evidence of the variation of E(J-H)/E(J-K) with the angle from the Galactic centre nor with Galactocentric distance. This suggests that we are dealing with a uniform extinction law in the SDSS ugriz bands and the near-IR JHKs bands. Therefore, extinction maps using mean colour-excesses and assuming a constant extinction coefficient can be used without introducing any systematic errors.
description: 13 pages, 14 figures, 1 Appendix accepted for publication in Astronomy&Astrophysics
MPEC 2023-U37 : 2023 TT19
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 TT19

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Friendship Quality and Self-Esteem Observational Research
Creators: name: Tomlinson, Tracy
name: Miller, Jessica
name: Fetters, Grace Marie
name: Zizhong Xiao
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: friendship quality
subject: observational research
subject: self-esteem

description: This research will use Twitter as a means to observe instances of friendship quality and self-esteem.
Disconnecting the Dots: Re-Examining the Nature of Stellar "Strings" in the Milky Way
Creators: name: Zucker, Catherine
name: Peek, J. E. G.
name: Loebman, Sarah R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent analyses of Gaia data have resulted in the identification of new stellar structures, including a new class of extended stellar filaments called stellar "strings", first proposed by Kounkel and Covey 2019. We explore the spatial, kinematic, and chemical composition of strings to demonstrate that these newfound structures are largely inconsistent with being physical objects whose members share a common origin. Examining the 3D spatial distribution of string members, we find that the spatial dispersion around the claimed string spine does not improve in the latest Gaia DR3 data release -- despite tangible gains in the signal-to-noise of the parallax measurements -- counter to expectations of a bona fide structure. Using the radial velocity dispersion of the strings (averaging $\rmσ_{V_r} = 16\;km\;s^{-1}$) to estimate their virial masses, we find that all strings are gravitationally unbound. Given the finding that the strings are dispersing, the reported stellar ages of the strings are typically $120\times$ larger than their measured dispersal times. Finally, we validate prior work that stellar strings are more chemically homogeneous than their local field stars, but show it is possible to obtain the same signatures of chemical homogeneity by drawing random samples of stars from spatially, temporally, and kinematically unrelated open clusters. Our results show that while some strings may be composed of real sub-structures, there is no consistent evidence for larger string-like connections over the sample. These results underline the need for caution in over-interpreting the significance of these strings and their role in understanding the star formation history of the Milky Way.
description: Accepted for publication in The Astrophysical Journal
The neutral gas content of post-merger galaxies
Creators: name: Ellison, Sara L.
name: Fertig, Derek
name: Rosenberg, Jessica L.
name: Nair, Preethi
name: Simard, Luc
name: Torrey, Paul
name: Patton, David R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Measurements of the neutral hydrogen gas content of a sample of 93 post-merger galaxies are presented, from a combination of matches to the ALFALFA.40 data release and new Arecibo observations. By imposing completeness thresholds identical to that of the ALFALFA survey, and by compiling a mass-, redshift- and environment-matched control sample from the public ALFALFA.40 data release, we calculate gas fraction offsets (Delta f_gas) for the post-mergers, relative to the control sample. We find that the post-mergers have HI gas fractions that are consistent with undisturbed galaxies. However, due to the relative gas richness of the ALFALFA.40 sample, from which we draw our control sample, our measurements of gas fraction enhancements are likely to be conservative lower limits. Combined with comparable gas fraction measurements by Fertig et al. in a sample of galaxy pairs, who also determine gas fraction offsets consistent with zero, we conclude that there is no evidence for significant neutral gas consumption throughout the merger sequence. From a suite of 75 binary merger simulations we confirm that star formation is expected to decrease the post-merger gas fraction by only 0.06 dex, even several Gyr after the merger. Moreover, in addition to the lack of evidence for gas consumption from gas fraction offsets, the observed HI detection fraction in the complete sample of post-mergers is twice as high as the controls, which suggests that the post-merger gas fractions may actually be enhanced. We demonstrate that a gas fraction enhancement in post-mergers, relative to a stellar mass-matched control sample, would indeed be the natural result of merging randomly drawn pairs from a parent population which exhibits a declining gas fraction with increasing stellar mass.
description: MNRAS, in press
On the numbers of 1-factors and 1-factorizations of hypergraphs
Creators: name: Taranenko, Anna
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A 1-factor of a hypergraph $G=(X,W)$ is a set of hyperedges such that every vertex of $G$ is incident to exactly one hyperedge from the set. A 1-factorization is a partition of all hyperedges of $G$ into disjoint 1-factors. The adjacency matrix of a $d$-uniform hypergraph $G$ is the $d$-dimensional (0,1)-matrix of order $|X|$ such that an element $a_{α_1, \ldots, α_d}$ of $A$ equals 1 if and only if $\left\{α_1, \ldots, α_d\right\}$ is a hyperedge of $G$. Here we estimate the number of 1-factors of uniform hypergraphs and the number of 1-factorizations of complete uniform hypergraphs by means of permanents of their adjacency matrices.
Reducing Computational Complexity of Quantum Correlations
Creators: name: Chanda, Titas
name: Das, Tamoghna
name: Sadhukhan, Debasis
name: Pal, Amit Kumar
name: De, Aditi Sen
name: Sen, Ujjwal
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address the issue of reducing the resource required to compute information-theoretic quantum correlation measures like quantum discord and quantum work deficit in two qubits and higher dimensional systems. We show that determination of the quantum correlation measure is possible even if we utilize a restricted set of local measurements. We find that the determination allows us to obtain a closed form of quantum discord and quantum work deficit for several classes of states, with a low error. We show that the computational error caused by the constraint over the complete set of local measurements reduces fast with an increase in the size of the restricted set, implying usefulness of constrained optimization, especially with the increase of dimensions. We perform quantitative analysis to investigate how the error scales with the system size, taking into account a set of plausible constructions of the constrained set. Carrying out a comparative study, we show that the resource required to optimize quantum work deficit is usually higher than that required for quantum discord. We also demonstrate that minimization of quantum discord and quantum work deficit is easier in the case of two-qubit mixed states of fixed ranks and with positive partial transpose in comparison to the corresponding states having non-positive partial transpose. Applying the methodology to quantum spin models, we show that the constrained optimization can be used with advantage in analyzing such systems in quantum information-theoretic language. For bound entangled states, we show that the error is significantly low when the measurements correspond to the spin observables along the three Cartesian coordinates, and thereby we obtain expressions of quantum discord and quantum work deficit for these bound entangled states.
description: 19 pages, 14 figures, 3 tables
Emergent user behavior on Twitter modelled by a stochastic differential equation
Creators: name: Mollgaard, Anders
name: Mathiesen, Joachim
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Data from the social-media site, Twitter, is used to study the fluctuations in tweet rates of brand names. The tweet rates are the result of a strongly correlated user behavior, which leads to bursty collective dynamics with a characteristic 1/f noise. Here we use the aggregated "user interest" in a brand name to model collective human dynamics by a stochastic differential equation with multiplicative noise. The model is supported by a detailed analysis of the tweet rate fluctuations and it reproduces both the exact bursty dynamics found in the data and the 1/f noise.
Sensitivity to New Physics in final states with multiple gauge and Higgs bosons
Creators: name: Cappati, Alessandra
name: Covarelli, Roberto
name: Torrielli, Paolo
name: Zaro, Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We analyse the sensitivity to beyond-the-Standard-Model effects of hadron-collider processes involving the interaction of two electroweak and two Higgs bosons, VVHH, with V being either a W or a Z boson. We examine current experimental results by the CMS collaboration in the context of a dimension-8 extension of the Standard Model in an effective-field-theory formalism. We show that constraints from vector-boson-fusion Higgs-pair production on operators that modify the Standard Model VVHH interactions are already comparable with or more stringent than those quoted in the analysis of vector-boson-scattering final states. We study the modifications of such constraints when introducing unitarity bounds, and investigate the potential of new experimental final states, such as ZHH associated production. Finally, we show perspectives for the high-luminosity phase of the LHC.
description: 25 pages
Retalho de padrão axial ilíaco circunflexo empregado após ressecção de hemangiopericitoma em cão - relato de caso
Creators: name: Pazzini, Josiane M.
name: Serafim, Eduardo L.
name: De Nardi, Andrigo B.
name: Calazans, Sabryna G.
name: Oliva, Carlos A. C.
name: Oliveira, Jéssica R
name: Müller, Larissa
name: Huppes, Rafael R.
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2016

description: Os hemangiopericitomas fazem parte dos sarcomas de tecido mole, e correspondem a 14% das neoplasias mesenquimais em cães e gatos. Apresenta etiologia desconhecida, crescimento lento, aspecto infiltrativo e não metastático. Acometem principalmente animais de raças grandes, de meia idade a idosos e não apresenta predileção por raça e sexo. Os tratamentos mais indicados são a amputação, ressecção local associada à radioterapia e cirurgias reconstrutivas. O uso de técnicas cirúrgicas reconstrutivas, permite que o animal retorne sua rotina normal com maior rapidez e com resultados estéticos satisfatórios. O presente trabalho tem como objetivo relatar o emprego de retalho de padrão axial da artéria ilíaca circunflexa profunda após a ressecção de hemangiopericitoma em região de membro pélvico esquerdo de um cão. Esta modalidade de tratamento empregada no presente relato, juntamente com quimioterapia mostraram resultados satisfatórios, mantendo a funcionalidade do membro e qualidade de vida da paciente. Palavras-chave: cirurgia reconstrutiva, neoplasia, quimioterapia, canino.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 8 (2016)
Double-mode radial-non-radial RR Lyrae stars in the OGLE photometry of the Galactic bulge
Creators: name: Netzel, H.
name: Smolec, R.
name: Moskalik, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Non-radial modes are excited in classical pulsators, both in Cepheids and in RR Lyrae stars. Firm evidence come from the first overtone pulsators, in which additional shorter period mode is detected with characteristic period ratio falling in between 0.60 and 0.65. In the case of first overtone Cepheids three separate sequences populated by nearly 200 stars are formed in the Petersen diagram, i.e. the diagram of period ratio versus longer period. In the case of first overtone RR Lyrae stars (RRc stars) situation is less clear. A dozen or so such stars are known which form a clump in the Petersen diagram without any obvious structure. Interestingly, all first overtone RR Lyrae stars for which precise space-borne photometry is available show the additional mode, which suggests that its excitation is common. Motivated by these results we searched for non-radial modes in the OGLE-III photometry of RRc stars from the Galactic bulge. We report the discovery of 147 stars, members of a new group of double-mode, radial-non-radial mode pulsators. They form a clear and tight sequence in the Petersen diagram, with period ratios clustering around 0.613 with a signature of possible second sequence with higher period ratio (0.631). The scatter in period ratios of the already known stars is explained as due to population effects. Judging from the results of space observations this still mysterious form of pulsation must be common among RRc stars and with our analysis of the OGLE data we just touch the tip of the iceberg.
description: 12 pages, 9 figures, accepted for publication in MNRAS
Análise hematológica em gatos domésticos (Felis silvestris catus) diagnosticados com micoplasmose em Osasco, São Paulo - Brasil
Creators: name: Martinez, Marina De Souza
name: Dos Santos, Ivan Felismino Charas
name: Kolber, Milton
name: Del Poente, Maira Duarte
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2016

description: A micoplasmose felina é uma afecção causada por Mycoplasma haemofelis, sendo que os gatos acometidos e não tratados podem entrar em óbito. É uma afecção com alta percentagem de prevalência, porém, subdiagnosticada. O objetivo do trabalho foi realizar uma análise dos hemogramas de gatos domésticos diagnosticados com micoplasmose felina, domiciliados na região de Osasco, São Paulo, Brasil. Para tal, foram utilizados dados das fichas clínicas e hemogramas, do período de 01 de janeiro de 2013 a 31 de dezembro de 2014, referentes a 15 gatos domésticos (Felis silvestris catus) diagnosticados com micoplasmose felina. Os dados coletados referiram-se à informação sobre a idade, o sexo e a raça, tendo a estatística descritiva sido realizada com o programa Microsoft Excel (2013). Do total de hemogramas, 73,3% (11/15) pertenceram a gatos machos, e 26,7% (4/15) a fêmeas. Todos os gatos acometidos eram sem raça determinada, e sua maioria com 11 anos idade 26,7% (4/15). As alterações de hemograma incluíram anisocitose, policromasia, corpúsculos de Howell-Jolly, plasma ictérico, anemia normocítica normocrómica regenerativa, trombocitopenia, leucocitose, neutrofilia segmentar, neutrófilos tóxicos, neutrófilos hiposegmentados, linfocitose, linfócitos reativos. Não existiram alterações de hemograma com padrão de compatibilidade com micoplasmose felina causada por Mycoplasma haemofelis.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 8 (2016)
Testes moleculares no apoio à clínica veterinária
Creators: name: Pires, Ana Elisabete
name: Alves, Margarida
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2015

description: O presente artigo consiste numa breve resenha da aplicabilidade dos testes moleculares ao serviço da Clínica Veterinária. Os testes moleculares actualmente disponíveis são muito abrangentes, permitindo por exemplo a identificação de agentes patogénicos causadores de doença ao nível da espécie, o diagnóstico de doenças genéticas e até a identificação molecular do sexo em espécies de aves que não apresentam dimorfismo sexual. O recurso a estes testes durante a prática clínica pode acelerar o diagnóstico, permitir uma prescrição médica mais específica e ser de apoio à criação animal. São, ainda, apresentados os testes moleculares que presentemente estão disponíveis no Laboratório de Análises Clínicas e Histopatologia da Universidade Lusófona de Humanidades e Tecnologias
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 7 (2015)
Additional file 1: of Trypanosoma brucei rhodesiense infection in a Chinese traveler returning from the Serengeti National Park in Tanzania
Creators: name: Liu, Qin
name: Chen, Xiao-Ling
name: Mu-Xin Chen
name: Han-Guo Xie
name: Liu, Qing
name: Zhu-Yun Chen
name: Yao-Ying Lin
name: Zheng, Hua
name: Chen, Jia-Xu
name: Zhang, Yi
name: Xiao-Nong Zhou
Publisher: name: Figshare
Year: 2018
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Multilingual abstracts in the six official working languages of the United Nations. (PDF 825 kb)
Free energy of formation of small ice nuclei near the Widom line in simulations of supercooled water
Creators: name: Buhariwalla, Connor R. C.
name: Bowles, Richard K.
name: Saika-Voivod, Ivan
name: Sciortino, Francesco
name: Poole, Peter H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The ST2 interaction potential has been used in a large number of simulation studies to explore the possibility of a liquid-liquid phase transition (LLPT) in supercooled water. Using umbrella sampling Monte Carlo simulations of ST2 water, we evaluate the free energy of formation of small ice nuclei in the supercooled liquid in the vicinity of the Widom line, the region above the critical temperature of the LLPT where a number of thermodynamic anomalies occur. Our results show that in this region there is a substantial free energy cost for the formation of small ice nuclei, demonstrating that the thermodynamic anomalies associated with the Widom line in ST2 water occur in a well-defined metastable liquid phase. On passing through the Widom line, we identify changes in the free energy to form small ice nuclei that illustrate how the thermodynamic anomalies associated with the LLPT may influence the ice nucleation process.
description: 11 pages, 15 figures
The Classification of Optical Galaxy Morphology Using Unsupervised Learning Techniques
Creators: name: Fielding, Ezra
name: Nyirenda, Clement N.
name: Vaccari, Mattia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In recent years, large scale data intensive astronomical surveys have resulted in more detailed images being produced than scientists can manually classify. Even attempts to crowd-source this work will soon be outpaced by the large amount of data generated by modern surveys. This has brought into question the viability of human-based methods for classifying galaxy morphology. While supervised learning methods require datasets with existing labels, unsupervised learning techniques do not. Therefore, this paper implements unsupervised learning techniques to classify the Galaxy Zoo DECaLS dataset. A convolutional autoencoder feature extractor was trained and implemented. The resulting features were then clustered via k-means, fuzzy c-means and agglomerative clustering. These clusters were compared against the true volunteer classifications provided by the Galaxy Zoo DECaLS project. The best results, in general, were produced by the agglomerate clustering method. However, the increase in performance compared to k-means clustering was not significant considering the increase in clustering time. After undergoing the appropriate clustering algorithm optimizations, this approach could prove useful for classifying the better performing questions and could serve as the basis for a novel approach to generating more "human-like" galaxy morphology classifications from unsupervised techniques.
description: 6 pages, presented at the 2022 International Conference on Electrical, Computer and Energy Technologies (ICECET) 20-22 July 2022, Prague-Czech Republic
Additional file 1 of Trypanosoma brucei rhodesiense infection in a Chinese traveler returning from the Serengeti National Park in Tanzania
Creators: name: Liu, Qin
name: Chen, Xiao-Ling
name: Mu-Xin Chen
name: Han-Guo Xie
name: Liu, Qing
name: Zhu-Yun Chen
name: Yao-Ying Lin
name: Zheng, Hua
name: Chen, Jia-Xu
name: Zhang, Yi
name: Xiao-Nong Zhou
Publisher: name: Figshare
Year: 2018
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Multilingual abstracts in the six official working languages of the United Nations. (PDF 740 kb)
A new discriminant algebra construction
Creators: name: Biesel, Owen
name: Gioia, Alberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: A discriminant algebra operation sends a commutative ring $R$ and an $R$-algebra $A$ of rank $n$ to an $R$-algebra $Δ_{A/R}$ of rank $2$ with the same discriminant bilinear form. Constructions of discriminant algebra operations have been put forward by Rost, Deligne, and Loos. We present a simpler and more explicit construction that does not break down into cases based on the parity of $n$. We then prove properties of this construction, and compute some examples explicitly.
description: Updated to journal version
Variance Reduction for Inverse Trace Estimation via Random Spanning Forests
Creators: name: Pilavci, Yusuf Yigit
name: Amblard, Pierre-Olivier
name: Barthelme, Simon
name: Tremblay, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The trace $\tr(q(\ma{L} + q\ma{I})^{-1})$, where $\ma{L}$ is a symmetric diagonally dominant matrix, is the quantity of interest in some machine learning problems. However, its direct computation is impractical if the matrix size is large. State-of-the-art methods include Hutchinson's estimator combined with iterative solvers, as well as the estimator based on random spanning forests (a random process on graphs). In this work, we show two ways of improving the forest-based estimator via well-known variance reduction techniques, namely control variates and stratified sampling. Implementing these techniques is easy, and provides substantial variance reduction, yielding comparable or better performance relative to state-of-the-art algorithms.
Persistent current in an almost staggered Harper model
Creators: name: Vasserman, A.
name: Berkovits, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we study the persistent current (PC) of a staggered Harper model, close to the half-filling. The Harper model, which is a quasi-periodic system, is different than other one dimensional systems with uncorrelated disorder in the fact that it can be in the metallic regime. Nevertheless, the PC for a wide range of parameters of the Harper model does not show typical metallic behavior, although the system is in the metallic regime. This is a result of the nature of the central band states, which are a hybridization of Gaussian states localized in superlattice points. When the superlattice is not commensurate with the system length, the PC behaves as in an insulator. Thus even in the metallic regime a typical finite Harper model may exhibit a PC expected from an insulator.
description: 6 pages, 7 figures
Constraints on singularity resolution by nonlinear electrodynamics
Creators: name: Bokulić, Ana
name: Jurić, Tajron
name: Smolić, Ivica
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: One of the long standing problems is a quest for regular black hole solutions, in which a resolution of the spacetime singularity has been achieved by some physically reasonable, classical field, before one resorts to the quantum gravity. The prospect of using nonlinear electromagnetic fields for this goal has been limited by the Bronnikov's no-go theorems, focused on Lagrangians depending on the electromagnetic invariant $F_{ab}F^{ab}$ only. We extend Bronnikov's results by taking into account Lagrangians that depend on both electromagnetic invariants, $F_{ab}F^{ab}$ and $F_{ab}\,{\star F^{ab}}$, and prove that the tension between the Lagrangian's Maxwellian weak field limit and boundedness of the curvature invariants persists in more general class of theories.
description: 10 pages (two columns); ver.2: several references added; ver. 3: version accepted for publication in Physical Review D
Category theoretic properties of the A. Rényi and C. Tsallis entropies
Creators: name: Steinbrecher, György
name: Sonnino, Alberto
name: Sonnino, Giorgio
Publisher: name: arXiv
Year: 2015
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: The problem of embedding the Tsallis and Rényi entropies in the framework of category theory and their axiomatic foundation is studied. To this end, we construct a special category MES related to measured spaces. We prove that both of the Rényi and Tsallis entropies can be imbedded in the formalism of category theory by proving that the same basic functional that appears in their definitions, as well as in the associated Lebesgue space norms, has good algebraic compatibility properties. We prove that this functional is both additive and multiplicative with respect to the direct product and the disjoint sum (the coproduct) in the category MES, so it is a natural candidate for the measure of information or uncertainty. We prove that the category MES can be extended to monoidal category, both with respect to the direct product as well as to the coproduct. The basic axioms of the original Rényi entropy theory are generalized and reformulated in the framework of category MES and we prove that these axioms foresee the existence of an universal exponent having the same values for all the objects of the category MES. In addition, this universal exponent is the parameter, which appears in the definition of the Tsallis and Rényi entropies.
description: 16 pages, 0 figures
Pericardite fibrinopurulenta: Caso clínico
Creators: name: Gomes, Joana Mendes
name: Santos, André
name: Ribeiro, João
name: Faísca, Pedro
name: Parreira, Pedro
Publisher: name: Revista Lusófona de Ciência e Medicina Veterinária
Year: 2015

description: Apresenta-se um caso clínico de pericardite fibrinopurulenta num gato macho com 3 meses de idade. Foi realizada uma pericardiectomia subfrénica onde se identificou e removeu cerca de 20 ml de material caseoso. Não foi identificado nenhum agente infeccioso.
description: Revista Lusófona de Ciência e Medicina Veterinária, v. 7 (2015)
Anisotropic Cosmological Model with Variable G and Lambda
Creators: name: Tripathy, S. K.
name: Behera, D.
name: Routray, T. R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Anisotropic Bianchi-III cosmological model is investigated with variable gravitational and cosmological constants in the framework of Einstein's general relativity. The shear scalar is considered to be proportional to the expansion scalar. The dynamics of the anisotropic universe with variable G and Lambda are discussed. Without assuming any specific forms for Lambda and the metric potentials, we have tried to extract the time variation of G and Lambda from the anisotropic model. The extracted G and Lambda are in conformity with the present day observation. Basing upon the observational limits, the behaviour and range of the effective equation of state parameter are discussed.
description: 9pages
Joule heating and the thermal conductivity of a two-dimensional electron gas at cryogenic temperatures studied by modified 3$ω$ method
Creators: name: Endo, Akira
name: Katsumoto, Shingo
name: Iye, Yasuhiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: During the standard ac lock-in measurement of the resistance of a two-dimensional electron gas (2DEG) applying an ac current $I = \sqrt{2} I_0 \sin(ωt)$, the electron temperature $T_e$ oscillates with the angular frequency $2 ω$ due to the Joule heating $\propto I^2$. We have shown that the highest ($T_\mathrm{H}$) and the lowest ($T_\mathrm{L}$) temperatures during a cycle of the oscillations can be deduced, at cryogenic temperatures, exploiting the third-harmonic (3$ω$) component of the voltage drop generated by the ac current $I$ and employing the amplitude of the Shubnikov-de Haas oscillations as the measure of $T_e$. The temperatures $T_\mathrm{H}$ and $T_\mathrm{L}$ thus obtained allow us to roughly evaluate the thermal conductivity $κ_{xx}$ of the 2DEG via the modified 3$ω$ method, in which the method originally devised for bulk materials is modified to be applicable to a 2DEG embedded in a semiconductor wafer. The $κ_{xx}$ thus deduced is found to be consistent with the Wiedemann-Franz law. The method provides a convenient way to access $κ_{xx}$ using only a standard Hall-bar device and the simple experimental setup for the resistance measurement.
description: Main text: 10 pages, 5 figures. Supplementary material: 4 pages, 6 figures, minor revision
Experimental Realization of Universal Geometric Quantum Gates with Solid-State Spins
Creators: name: Zu, C.
name: Wang, W. -B.
name: He, L.
name: Zhang, W. -G.
name: Dai, C. -Y.
name: Wang, F.
name: Duan, L. -M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Experimental realization of a universal set of quantum logic gates is the central requirement for implementation of a quantum computer. An all-geometric approach to quantum computation offered a paradigm for implementation where all the quantum gates are achieved based on the Berry phases and their non-abelian extensions, the holonomies, from geometric transformation of quantum states in the Hilbert space. Apart from its fundamental interest and rich mathematical structure, the geometric approach has some built-in noise-resilient features. On the experimental side, geometric phases and holonomies have been observed using nuclear magnetic resonance with thermal ensembles of liquid molecules, however, such systems are known to be non-scalable for quantum computing. There are proposals to implement geometric quantum computation in scalable experimental platforms such as trapped ions, superconducting qubits, or quantum dots, and a recent experiment has realized geometric single-bit gates with the superconducting system. Here, we report the experimental realization of a universal set of geometric quantum gates with solid-state spins of the diamond defects. The diamond defects provide a scalable experimental platform with the potential for room-temperature quantum computing, which has attracted strong interest in recent years. Based on advance of coherent control in this system, our experiment shows that all-geometric and potentially robust quantum computation can be realized with solid-state spin qubits.
Reddit Dating App Observations
Creators: name: Tomlinson, Tracy
name: Miller, Jessica
name: Light, Austin Tyler
name: Zizhong Xiao
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Social and Behavioral Sciences
subject: #datingapps
subject: #observationalresearch
subject: #Self-esteem

description: I will be analyzing Reddit threads and finding one for positive dating app experience and one for negative experience and then finding 30 people in each thread.