cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vocabulary load of beginning readers authorized for British Columbia schools, 1872 to 1977
Creators: name: Patterson, Joyce Isobel
Publisher: name: University of British Columbia
Year: 2010

description: Identifies and compares three dimensions of the vocabulary load of the nine readers and reader series prescribed for beginning reading in the Province of British Columbia since 1872. The dimensions explored were: number of running words; number of new words introduced; and average number and range of repetitions. Periods of prescription were designated by the first year of prescription, namely: 1872, 1884, 1901, 1915, 1923, 1935, 1948, 1964, and 1968. (The 1964 and 1968 materials are currently both authorized by the Ministry of Education.) Tabulations were made for each dimension in each time period. The number of running words in each time period was 3,495, 1,468, 2,540, 2,021, 7,252, 12,766, 20,577, 23,177, and 7,531 respectively. The number of new words introduced in each time period was 392, 367, 405, 447, 633, 601, 341, 500, and 860 in each case. The average number of repetitions found in a sample of the first 500 words in each time period was, respectively: 6.1, 5.3, 3.3, 3.0, 5.8, 6.3, 22.7, 14.2, and 4.6. The range of repetitions in the same 500-word sample was as follows in each case: 1-43, 1-75, 1-34, 1-31, 1-55, 1-38, 5-60, 1-54, and 1-38. The method did not account for repetitions of words having similar patterns, an aspect of the vocabulary system observed in the 1872, 1923, and 1968 materials. Concludes that the differences between the early time periods and the recent time periods of 1935, 1948, and 1964 are related to the use of vocabulary control which provides for the introduction of a limited number of new words and their systematic repetition. Recommends (1) investigation of methods of determining vocabulary load of beginning readers that gives weight to word patterns; (2) content analysis of related teachers manuals and other documents to ascertain teaching methods; and (3) content analysis of the readers to determine attitudes expressed. Appendix describes procedures in identifying and verifying the periods of prescription and the prescribed readers.
System-reservoir dynamics of quantum and classical correlations
Creators: name: Maziero, J.
name: Werlang, T.
name: Fanchini, F. F.
name: Celeri, L. C.
name: Serra, R. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address the system-reservoir dynamics of classical and quantum correlations in the decoherence phenomenon, regarding a two qubit composite system interacting with two independent environments. The most common noise channels (amplitude damping, phase damping, bit flip, bit-phase flip, and phase flip) was studied. By analytical and numerical analysis we found that, contrary to what is usually stated in the literature, decoherence may occurs without entanglement between the system and the environment. We also found that, in some cases, the bipartite quantum correlation initially presented in the system is completely evaporated, it is not transferred to the environments.
description: To appear in PRA
Equipartition of energy and the first law of thermodynamics at the apparent horizon
Creators: name: Shu, Fu-Wen
name: Gong, Yungui
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply the holographic principle and the equipartition law of energy to the apparent horizon of a Friedmann-Robertson-Walker universe and derive the Friedmann equation describing the dynamics of the universe. We also show that the equipartition law of energy can be interpreted as the first law of thermodynamics at the apparent horizon.
description: v2: 7 pages, 1 figure, add discussion on consistency check, Int. J. Mod. Phys. D in press
Dynamical stability of giant planets: the critical adiabatic index in the presence of a solid core
Creators: name: Kundu, Suman Kumar
name: Coughlin, Eric R.
name: Youdin, Andrew N.
name: Armitage, Philip J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The dissociation and ionization of hydrogen, during the formation of giant planets via core accretion, reduces the effective adiabatic index $γ$ of the gas and could trigger dynamical instability. We generalize the analysis of Chandrasekhar, who determined that the threshold for instability of a self-gravitating hydrostatic body lies at $γ=4/3$, to account for the presence of a planetary core, which we model as an incompressible fluid. We show that the dominant effect of the core is to stabilize the envelope to radial perturbations, in some cases completely (i.e. for all $γ> 1$). When instability is possible, unstable planetary configurations occupy a strip of $γ$ values whose upper boundary falls below $γ=4/3$. Fiducial evolutionary tracks of giant planets forming through core accretion appear unlikely to cross the dynamical instability strip that we define.
Universality of state-independent violation of correlation inequalities for noncontextual theories
Creators: name: Badziag, Piotr
name: Bengtsson, Ingemar
name: Cabello, Adan
name: Pitowsky, Itamar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the state-independent violation of inequalities for noncontextual hidden variable theories introduced in [Phys. Rev. Lett. 101, 210401 (2008)] is universal, i.e., occurs for any quantum mechanical system in which noncontextuality is meaningful. We describe a method to obtain state-independent violations for any system of dimension d > 2. This universality proves that, according to quantum mechanics, there are no "classical" states.
description: REVTeX4, 4 pages
Bulk sensitive x-ray absorption spectroscopy free of self-absorption effects
Creators: name: Achkar, A. J.
name: Regier, T. Z.
name: Wadati, H.
name: Kim, Y. -J.
name: Zhang, H.
name: Hawthorn, D. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate a new method of x-ray absorption spectroscopy (XAS) that is bulk sensitive, like traditional fluorescence yield measurements, but is not affected by self-absorption or saturation effects. This measure of XAS is achieved by scanning the incident photon energy through an absorption edge and using an energy sensitive photon detector to measure the partial fluorescence yield (PFY). The x-ray emission from any element or core-hole excitation that is not resonant with the absorption edge under investigation is selected from the PFY. It is found that the inverse of this PFY spectrum, which we term inverse partial fluorescence yield (IPFY), is linearly proportional to the x-ray absorption cross-section without any corrections due to saturation or self-absorption effects. We demonstrate this technique on the Cu L and Nd M absorption edges of the high-Tc cuprate LNSCO by measuring the O K PFY and comparing the total electron yield, total fluorescence yield and IPFY spectra.
description: 4 pages, 2 figures
Proving the Achronal Averaged Null Energy Condition from the Generalized Second Law
Creators: name: Wall, Aron C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A null line is a complete achronal null geodesic. It is proven that for any quantum fields minimally coupled to semiclassical Einstein gravity, the averaged null energy condition (ANEC) on null lines is a consequence of the generalized second law of thermodynamics for causal horizons. Auxiliary assumptions include CPT and the existence of a suitable renormalization scheme for the generalized entropy. Although the ANEC can be violated on general geodesics in curved spacetimes, as long as the ANEC holds on null lines there exist theorems showing that semiclassical gravity should satisfy positivity of energy, topological censorship, and should not admit closed timelike curves. It is pointed out that these theorems fail once the linearized graviton field is quantized, because then the renormalized shear squared term in the Raychaudhuri equation can be negative. A "shear-inclusive" generalization of the ANEC is proposed to remedy this, and is proven under an additional assumption about perturbations to horizons in classical general relativity.
description: 19 pages, 1 figure. Added 2 paragraphs to end of section 2
BSL: Understanding and Improving Softmax Loss for Recommendation
Creators: name: Wu, Junkang
name: Chen, Jiawei
name: Wu, Jiancan
name: Shi, Wentao
name: Zhang, Jizhi
name: Wang, Xiang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Loss functions steer the optimization direction of recommendation models and are critical to model performance, but have received relatively little attention in recent recommendation research. Among various losses, we find Softmax loss (SL) stands out for not only achieving remarkable accuracy but also better robustness and fairness. Nevertheless, the current literature lacks a comprehensive explanation for the efficacy of SL. Toward addressing this research gap, we conduct theoretical analyses on SL and uncover three insights: 1) Optimizing SL is equivalent to performing Distributionally Robust Optimization (DRO) on the negative data, thereby learning against perturbations on the negative distribution and yielding robustness to noisy negatives. 2) Comparing with other loss functions, SL implicitly penalizes the prediction variance, resulting in a smaller gap between predicted values and and thus producing fairer results. Building on these insights, we further propose a novel loss function Bilateral SoftMax Loss (BSL) that extends the advantage of SL to both positive and negative sides. BSL augments SL by applying the same Log-Expectation-Exp structure to positive examples as is used for negatives, making the model robust to the noisy positives as well. Remarkably, BSL is simple and easy-to-implement -- requiring just one additional line of code compared to SL. Experiments on four real-world datasets and three representative backbones demonstrate the effectiveness of our proposal. The code is available at https://github.com/junkangwu/BSL
Crossed Product of Cyclic Groups
Creators: name: Agore, Ana-Loredana
name: Fratila, Dragos
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20B05, 20B35, 20D06, 20D40

description: All crossed products of two cyclic groups are explicitly described using generators and relations. A necessary and sufficient condition for an extension of a group by a group to be a cyclic group is given.
description: To appear in Czechoslovak Mathematical Journal
The number of nonzero binomial coefficients modulo p^alpha
Creators: name: Rowland, Eric
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B65, 11A63, 05A17, 05A15

description: In 1947 Fine obtained an expression for the number of binomial coefficients on row n of Pascal's triangle that are nonzero modulo p. In this paper we use Kummer's theorem to generalize Fine's theorem to prime powers, expressing the number of nonzero binomial coefficients modulo p^alpha as a sum over certain integer partitions. For fixed alpha, this expression can be rewritten to show explicit dependence on the number of occurrences of each subword in the base-p representation of n.
description: 10 pages; publication version
Picrostigeus longicauda RIEDEL 2023, nov.sp.
Creators: name: Riedel
name: Pénigot
name: Schwarz
name: Diller
name: Johansson
name: Japoshvili, G.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Picrostigeus
Picrostigeus longicauda

description: Picrostigeus longicauda RIEDEL nov.sp.
M a t e r i a l e x a m i n e d: Trap 12: 2♀♀ 20.v.-1.vi., 1♀ 10-14.viii.; trap 15: 1♀ 30.vi.-14.vii.
D i s t r i b u t i o n: Only known from Georgia.
description: Published as part of Riedel, Pénigot, Schwarz, Diller, Johansson & Japoshvili, G., 2023, Darwin wasps (Hymenoptera, Ichneumonidae) of the Kintrishi National Park, Sakartvelo (Georgia), with descriptions of six new species, pp. 61-153 in Linzer biologische Beiträge 55 (1) on page 118, DOI: 10.5281/zenodo.10415120
Boundary conditions for the Baumgarte-Shapiro-Shibata-Nakamura formulation of Einstein's field equations
Creators: name: Nunez, Dario
name: Sarbach, Olivier
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the initial-boundary value problem for the Baumgarte-Shapiro-Shibata-Nakamura evolution system of Einstein's field equations which has been used extensively in numerical simulations of binary black holes and neutron stars. We specify nine boundary conditions for this system with the following properties: (i) they impose the momentum constraint at the boundary, which is shown to preserve all the constraints throughout evolution, (ii) they approximately control the incoming gravitational degrees of freedom by specifying the Weyl scalar Psi_0 at the boundary, (iii) they control the gauge freedom by requiring a Neumann boundary condition for the lapse, by setting the normal component of the shift to zero, and by imposing a Sommerfeld-like condition on the tangential components of the shift, (iv) they are shown to yield a well-posed problem in the limit of weak gravity. Possible numerical applications of our results are also discussed briefly.
description: 20 pages, no figures, small corrections in order to match published version
George Eldridge House
Creators: name: Weber, Harvey A.
Publisher: name: Unknown
Year: 1970
Subjects: Photographs
Photos
Historic buildings
East Hampton
Structures
Dwellings

description: This image shows front exterior view from the sidewalk of George Eldridge House located in East Hampton. This image was taken by photographer Harvey A. Weber (1917-1991) and is part of the East Hampton’s Heritage Photo Collection.
description: Images within East Hampton Heritage Photo Collection seem to have been taken or collected in relation to the East Hampton Heritage project, but not all of them were included in the final publication. Several photographer are included in this collection.
Additional file 1 of Uterine macrophages as treatment targets for therapy of premature rupture of membranes by modified ADSC-EVs through a circRNA/miRNA/NF-κB pathway
Creators: name: Gao, Yuhua
name: Mi, Ningning
name: Zhang, Ying
name: Li, Xiangchen
name: Guan, Weijun
name: Bai, Chunyu
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1.The analysis of biological characteristics in human ADSCs.The ADSCs had successfully differentiated into chondrocytes(A), adipocytes(B), and osteoblasts(C). CD29, CD90, and CD105 were positive in human ADSCs(D). Figure S2.The ADSC-secreted EVs were incubated with M1 phenotype macrophages. Fluorescence images were used to evaluate localization of FITC-labeled NF-κB1 (p50) and Cy5-labeled NF-κB(p65). FQ,fluorescence quantitation; a.u., arbitrary unit. FigureS3. Internalizationof normal EVs and F4/80-EVs into M1 phenotype macrophages. Microscopic visualizationof internalization(left), and analysisof EVs fluorescence intensity(right). **p< 0.01. Figure S4. Flow cytometry of M1 (iNOS) and M2 (CD206) macrophage markers after treatment with various F4/80-EVsand quantification of iNOS and CD206 expression levels in various F4/80-EV-treated M2 phenotype macrophages.ns, not significant. Figure S5.Bio-toxicity analysis of the various F4/80-EVsin mice.n=5,ns, not significant, *p< 0.05, **p< 0.01, ***p< 0.001. Figure S6. Whole blot images for Figure 4. Figure S7. Whole blot images for Figure 5.
A priori bounds for Gevrey-Sobolev norms of space-periodic three-dimensional solutions to equations of hydrodynamic type
Creators: name: Zheligovsky, V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We present a technique for derivation of a priori bounds for Gevrey-Sobolev norms of space-periodic three-dimensional solutions to evolutionary partial differential equations of hydrodynamic type. It involves a transformation of the flow velocity in the Fourier space, which introduces a feedback between the index of the norm and the norm of the transformed solution, and results in emergence of a mildly dissipative term. To illustrate the technique, we derive finite-time bounds for Gevrey-Sobolev norms of solutions to the Euler and inviscid Burgers equations, and global in time bounds for the Voigt-type regularisations of the Euler and Navier-Stokes equation (assuming that the respective norm of the initial condition is bounded). The boundedness of the norms implies analyticity of the solutions in space.
description: 21 pp. Version 4 withdrawn due to an error. Submitted to Differential and integral equations
Noise Spectra of ac-driven quantum dots
Creators: name: Wu, B. H.
name: Timm, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the transport properties of a quantum dot driven by either a rotating magnetic field or an ac gate voltage using the Floquet master-equation approach. Both types of ac driving lead to photon-assisted tunneling where quantized amounts of energy are exchanged with the driving field. It is found that the differential-conductance peak due to photon-assisted tunneling does not survive in the Coulomb-blockade regime when the dot is driven by a rotating magnetic field. Furthermore, we generalize the MacDonald formula to calculate the time-averaged noise spectra of ac-driven quantum dots. Besides the peak at zero frequency, the noise spectra show additional peaks or dips in the presence of an ac field. For the case of an applied ac gate voltage, the peak or dip position is fixed at the driving frequency, whereas the position changes with increasing amplitude for the case of a rotating magnetic field. Additional features appear in the noise spectra if a dc magnetic field is applied in addition to a rotating field. In all cases, the peak or dip positions can be understood from the energy differences of two available Floquet channels.
Superfield actions for N=8 and N=6 conformal theories in three dimensions
Creators: name: Cederwall, Martin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The manifestly supersymmetric pure spinor formulations of the Bagger-Lambert-Gustavsson models with N=8 supersymmetry and the Aharony-Bergman-Jafferis-Maldacena models with N=6 supersymmetry are given. The structures of the pure spinors are investigated in both cases, and non-degenerate measures are formed using non-minimal sets of variables, allowing for the formulation of an action principle.
description: 12 pp., plain tex. v2: references added, typos in eqs. 14 and 15 corrected. v3: refs. added
Meaning development in one child acquiring Dakota-Sioux as a first language
Creators: name: Nokony, Alicia Alexander
Publisher: name: University of British Columbia
Year: 2010

description: This is a report on research into the language development of one child who is acquiring Dakota-Sioux as a first language. Features of his language system show him to be at a period in development corresponding to Brown's (1973) Stage I, Halliday's (1975) Phase II, and Piaget's (1962) sensorimotor substage VI; in other words he is just beginning to produce multi-morphemic utterances, take part in dialogues and actively use symbolic representations in play and verbal interactions. The report focusses on the development of meaning and is based on the assumption that a child's ability to express meanings involves not only semantic knowledge (that is, the ability to describe relations and to refer using formal linguistic devices), but also pragmatic or functional skills (that is, knowledge about how language can be used to perform communication functions, such as regulating the behaviour of others, expressing personal opinions and feelings, etc.). Overriding both these areas, however, is the understanding that language is one part of a larger symbolizing capacity in humans and that language development, therefore, is above all related to this aspect of cognitive development. The analysis of the data collected from this child is structured around his propositional meanings, his functional meanings, some semantic considerations of his lexicon, and phenomena, which I have labelled gestural representations, which appear to offer strong support for the notion of semiological genesis as described by Piaget.
Empirically Determining Substellar Cloud Compositions in the era of JWST
Creators: name: Luna, Jessica L.
name: Morley, Caroline V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Most brown dwarfs have atmospheres with temperatures cold enough to form clouds. A variety of materials likely condense, including refractory metal oxides and silicates; the precise compositions and crystal structures of predicted cloud particles depend on the modeling framework used and have not yet been empirically constrained. Spitzer has shown tentative evidence of the silicate feature in L dwarf spectra and JWST can measure these features in many L dwarfs. Here, we present new models to predict the signatures of the strongest cloud absorption features. We investigate different cloud mineral species and determine how particle size, mineralogy, and crystalline structure change spectral features. We find that silicate and refractory clouds have a strong cloud absorption feature for small particle sizes ($\leq$ 1 $μ$m). Model spectra are compared to five brown dwarfs that show evidence of the silicate feature; models that include small particles in the upper layers of the atmosphere produce a broad cloud mineral feature, and that better match the observed spectra than the Ackerman & Marley (2001) cloud model. We simulate observations with the MIRI instrument on JWST for a range of nearby, cloudy brown dwarfs, demonstrating that these features could be readily detectable if small particles are present. Furthermore, for photometrically variable brown dwarfs, our predictions suggest that with JWST, by measuring spectroscopic variability inside and outside a mineral feature, we can establish silicate (or other) clouds as the cause of variability. Mid-infrared spectroscopy is a promising tool to empirically constrain the complex cloud condensation sequence in brown dwarf atmospheres.
description: 24 pages, 18 figures, Accepted for publication in ApJ
Constraints on First-Light Ionizing Sources from Optical Depth of the Cosmic Microwave Background
Creators: name: Shull, J. Michael
name: Venkatesan, Aparna
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the constraints on high-redshift star formation, ultraviolet and X-ray pre-ionization, and the epoch of reionization at redshift z_r, inferred from the recent WMAP-5 measurement, tau_e = 0.084 +/- 0.016, of the electron scattering optical depth of the cosmic microwave background (CMB). Half of this scattering can be accounted for by the optical depth, tau_e = 0.04-0.05, of a fully ionized intergalactic medium (IGM) at z < z_GP = 6-7, consistent with Gunn-Peterson absorption in neutral hydrogen. The required additional optical depth, Delta-tau_e = 0.03 +/- 0.02 at z > z_GP, constrains the ionizing contributions of first light sources. WMAP-5 also measured a significant increase in small-scale power, which lowers the required efficiency of star formation and ionization from mini-halos. Early massive stars (UV radiation) and black holes (X-rays) can produce a partially ionized IGM, adding to the residual electrons left from incomplete recombination. Inaccuracies in computing the ionization history, x_e(z), and degeneracies in cosmological parameters (Omega_m, Omega_b, sigma_8, n_s) add systematic uncertainty to the measurement and modeling of $τ_e$. From the additional optical depth from sources at z > z_GP, we limit the star-formation efficiency, the rate of ionizing photon production for Pop III and Pop II stars, and the photon escape fraction, using standard histories of baryon collapse, minihalo star formation, and black-hole X-ray preionization.
description: Greatly revised version, based on WMAP-5 results and new models. Accepted for ApJ (2008)
Dissipative dynamics of magnetic solitons in metals
Creators: name: Wong, Clement H.
name: Tserkovnyak, Yaroslav
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Soliton dynamics in spin-textured metals generate electrical currents, which produce backaction through spin torques. We modify the Landau-Lifshitz-Gilbert equation and the corresponding solitonic equations of motion to include such higher-order texture effects. We also find a quasistatic equation for the induced electrochemical potential, which needs to be solved for self-consistently, in the incompressible limit. As an example, we consider the orbital motion of a vortex in a point-contact spin valve, and discuss modifications of orbit radius, frequency, and dissipation power.
description: 1 figure
Statistics of young starforming complexes in spiral galaxies using NIR photometry
Creators: name: Grosbol, P.
name: Dottori, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: All slightly extended sources were identified on deep K-band maps of 46 spiral galaxies reaching at least K=20.3 mag/arcsec2 at a signal-to-noise level of 3. The galaxies had inclination angles <65 deg and linear resolutions <100 pc with seeing better than 1". The sample includes both barred and normal spirals with a wide spread in types. We also analyzed J- and H-band colors for 4 galaxies for which such images were available. An apparent magnitude limit of K = 19 mag was used for the sources analyzed in order to avoid marginal detections. Furthermore, we derived the source distributions of magnitudes and relative locations with respect to the spiral patterns. Almost 70% (15/22) of the grand-design spiral galaxies show significant concentration of bright K-band knots in their arm regions corresponding to 30% (15/46) of the full sample. Color-color diagrams for the 4 spirals with JHK photometry suggest that a significant fraction of the diffuse sources found in the arms are complexes of young stellar clusters with ages <10 Myr and reddened with several magnitudes of visual extinction. The brightest knots reach an absolute K-band magnitude Mk of -15.5 mag corresponding to stellar clusters or complexes with total masses up to at least 10^5 Mo. Brightest magnitude and number of knots correlate with the total absolute magnitude of the host galaxy. More knots are seen in galaxies with high far-infrared flux and strong two-armed spiral perturbations. The bright knots constitute up to a few percent of the total K-band flux from their parent galaxy and account for a star formation rate of ~1 Mo/yr for the brightest grand-design spiral galaxies.
description: 10 pages, 11 figures plus online material. accepted for publication in A&A
Picrostigeus recticauda
Creators: name: Riedel
name: Pénigot
name: Schwarz
name: Diller
name: Johansson
name: Japoshvili, G.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Picrostigeus
Picrostigeus recticauda

description: Picrostigeus recticauda (THOMSON, 1897)
M a t e r i a l e x a m i n e d: Trap 7: 2♀♀ 5-19.x.; trap 15: 2♀♀ 14-28.vii.
D i s t r i b u t i o n: Transpalaearctic, new record for Georgia and the Caucasus region.
description: Published as part of Riedel, Pénigot, Schwarz, Diller, Johansson & Japoshvili, G., 2023, Darwin wasps (Hymenoptera, Ichneumonidae) of the Kintrishi National Park, Sakartvelo (Georgia), with descriptions of six new species, pp. 61-153 in Linzer biologische Beiträge 55 (1) on page 118, DOI: 10.5281/zenodo.10415120
On the energy crisis in noncommutative CP(1) model
Creators: name: Sourrouille, Lucas
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the CP(1) system in (2+1)-dimensional noncommutative space with and without Chern-Simons term. Using the Seiberg-Witten map we convert the noncommutative CP(1) system to an action written in terms of the commutative fields. We find that this system presents the same infinite size instanton solution as the commutative Chern-Simons-CP(1) model without a potential term. Based on this result we argue that the BPS equations are compatible with the full variational equations of motion, rejecting the hypothesis of an "energy crisis". In addition we examine the noncommutative CP(1) system with a Chern-Simons interaction. In this case we find that when the theory is transformed by the Seiberg-Witten map it also presents the same instanton solution as the commutative Chern-Simons-CP(1) model.
description: 17 pages, minor corrections
Quantum phase transition induced by Dzyaloshinskii-Moriya in the kagome antiferromagnet
Creators: name: Cepas, O.
name: Fong, C. M.
name: Leung, P. W.
name: Lhuillier, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We argue that the S=1/2 kagome antiferromagnet undergoes a quantum phase transition when the Dzyaloshinskii-Moriya coupling is increased. For $DD_c$ the system develops antiferromagnetic long-range order. The quantum critical point is found to be $D_c \simeq 0.1J$ using exact diagonalizations and finite-size scaling. This suggests that the kagome compound ZnCu$_3(OH)$_6$Cl$_3$ may be in a quantum critical region controlled by this fixed point.
description: 5 pages, 4 figures; v2: add. data included, show that D=0.1J is at a quantum critical point
Reopening the window on charged dark matter
Creators: name: Chuzhoy, Leonid
name: Kolb, Edward W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We reexamine the limits on charged dark matter particles. We show that if their mass and charge fall in the range 100(q_X/e)^2< m_X < 10^8(q_X/e) TeV, then magnetic fields prevent particles in the halo from entering the galactic disk, while those initially trapped inside are accelerated through the Fermi mechanism and ejected within about 0.1-1 Gyrs. Consequently, previous constraints on charged dark matter based on terrestrial non-observation are invalid within that range. Further, we find that charged massive particles may simultaneously solve several long-standing astrophysical problems, including the underabundance of dwarf galaxies, the shallow density profiles in the cores of the LSB galaxies, the absence of cooling flows in the cores of galaxy clusters, and several others.
description: 9 pages, 1 figure, accepted for publication in JCAP
Plectiscidea bistriata
Creators: name: Riedel
name: Pénigot
name: Schwarz
name: Diller
name: Johansson
name: Japoshvili, G.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Plectiscidea
Plectiscidea bistriata

description: Plectiscidea bistriata (THOMSON, 1888)
M a t e r i a l e x a m i n e d: Trap7: 1♀ 19.x.-3.xi.
D i s t r i b u t i o n: Western Palaearctic, new record for Georgia and the Caucasus region.
description: Published as part of Riedel, Pénigot, Schwarz, Diller, Johansson & Japoshvili, G., 2023, Darwin wasps (Hymenoptera, Ichneumonidae) of the Kintrishi National Park, Sakartvelo (Georgia), with descriptions of six new species, pp. 61-153 in Linzer biologische Beiträge 55 (1) on page 118, DOI: 10.5281/zenodo.10415120
Quantum Integrable Model of an Arrangement of Hyperplanes
Creators: name: Varchenko, Alexander
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Algebra (math.QA)
subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The goal of this paper is to give a geometric construction of the Bethe algebra (of Hamiltonians) of a Gaudin model associated to a simple Lie algebra. More precisely, in this paper a quantum integrable model is assigned to a weighted arrangement of affine hyperplanes. We show (under certain assumptions) that the algebra of Hamiltonians of the model is isomorphic to the algebra of functions on the critical set of the corresponding master function. For a discriminantal arrangement we show (under certain assumptions) that the symmetric part of the algebra of Hamiltonians is isomorphic to the Bethe algebra of the corresponding Gaudin model. It is expected that this correspondence holds in general (without the assumptions). As a byproduct of constructions we show that in a Gaudin model (associated to an arbitrary simple Lie algebra), the Bethe vector, corresponding to an isolated critical point of the master function, is nonzero.
CIFRA National Survey: Uruguay November 2013
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Main problems of country; likability of political leaders; approval of President José Mujica; approval of district mayor; main problems of your district; attitudes towards political parties; voting in primary elections; ideal vice president candidate; political spectrum position; past voting history; problems with mining; potential future voting choices; economic situation of the country; government attention on national problems; approval of police force; approval of ministers in cabinet; characteristics of candidates; ideal mayoral candidate for Montevideo. For those who vote in Montevideo: Voting for alliance between multiple political groups; mayoral elections. National Agency for Research and Innovation (ANII) Collection.
Yang-Mills Instantons and Dyons on Group Manifolds
Creators: name: Ivanova, Tatiana A.
name: Lechtenfeld, Olaf
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider Euclidean SU(N) Yang-Mills theory on the space GxR, where G is a compact semisimple Lie group, and introduce first-order BPS-type equations which imply the full Yang-Mills equations. For gauge fields invariant under the adjoint G-action these BPS equations reduce to first-order matrix equations, to which we give instanton solutions. In the case of G=SU(2)=S^3, our matrix equations are recast as Nahm equations, and a further algebraic reduction to the Toda chain equations is presented and solved for the SU(3) example. Finally, we change the metric on GxR to Minkowski and construct finite-energy dyon-type Yang-Mills solutions. The special case of G=SU(2)xSU(2) may be used in heterotic flux compactifications.
description: 1+7 pages
Minimal Spanning Tree graphs and power like scaling in FOREX networks
Creators: name: Gorski, A Z
name: Drozdz, S.
name: Kwapien, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Correlation matrices of foreign exchange rate time series are investigated for 60 world currencies. Minimal Spanning Tree (MST) graphs for the gold, silver and platinum are presented. Inverse power like scaling is discussed for these graphs as well as for four distinct currency groups (major, liquid, less liquid and non-tradable). The worst scaling has been found for USD and related currencies.
description: 9 pages, 7 figures
Opción Consultores National Survey: Uruguay December 2014
Creators: name: Opción Consultores, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Montevideo: 2015 municipal election; vote for or against parties; Frente Amplio (a leftist political coalition); Partido de la Concertación (National and Colorado Parties running under a unified platform); Independent Party; knowledge of political leaders; Daniel Martínez (Frente Amplio); Lucía Topolansky (Frente Amplio); José Bayardi; Edgardo Novick (Partido de la Concertación); Álvaro Garcé (Partido de la Concertación); Ney Castillo (Partido de la Concertación); likeability of political leaders; Intendant Ana Olivera job approval; priorities of the next municipal government; public transportation; sanitation; general management; public lighting; traffic/road infrastructure; 2014 general election; Tabaré Vázquez (Frente Amplio); Luis Lacalle Pou (National Party); Pedro Bordaberry (Colorado Party); Pablo Mieres (Independent Party). National Agency for Research and Innovation (ANII) Collection.
Ram pressure stripping of the cool core of the Ophiuchus Cluster
Creators: name: Million, E. T.
name: Allen, S. W.
name: Werner, N.
name: Taylor, G. B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (abridged) We report results from a Chandra study of the central regions of the nearby, X-ray bright, Ophiuchus Cluster (z = 0.03), the second-brightest cluster in the sky. Our study reveals a dramatic, close-up view of the stripping and potential destruction of a cool core within a rich cluster. The X-ray emission from the Ophiuchus Cluster core exhibits a comet-like morphology extending to the north, driven by merging activity, indicative of ram-pressure stripping caused by rapid motion through the ambient cluster gas. A cold front at the southern edge implies a velocity of 1000$\pm$200 km/s (M~0.6). The X-ray emission from the cluster core is sharply peaked. As previously noted, the peak is offset by 4 arcsec (~2 kpc) from the optical center of the associated cD galaxy, indicating that ram pressure has slowed the core, allowing the relatively collisionless stars and dark matter to carry on ahead. The cluster exhibits the strongest central temperature gradient of any massive cluster observed to date: the temperature rises from 0.7 keV within 1 kpc of the brightness peak, to 10 keV by 30 kpc. A strong metallicity gradient is also observed within the same region. This supports a picture in which the outer parts of the cool core have been stripped by ram-pressure due to its rapid motion. The cooling time of the innermost gas is very short, ~5$\times10^7$ yrs. Within the central 10 kpc radius, multiple small-scale fronts and a complex thermodynamic structure are observed, indicating significant motions. Beyond the central 50 kpc, and out to a radius ~150 kpc, the cluster appears relatively isothermal and has near constant metallicity. The exception is a large, coherent ridge of enhanced metallicity observed to trail the cool core, and which is likely to have been stripped from it.
description: Accepted to MNRAS. 11 pages, 9 figures
Earthquake Forecast via Neutrino Tomography
Creators: name: Wang, Bin
name: Chen, Ya-Zheng
name: Li, Xue-Qian
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We discuss the possibility of forecasting earthquakes by means of (anti)neutrino tomography. Antineutrinos emitted from reactors are used as a probe. As the antineutrinos traverse through a region prone to earthquakes, observable variations in the matter effect on the antineutrino oscillation would provide a tomography of the vicinity of the region. In this preliminary work, we adopt a simplified model for the geometrical profile and matter density in a fault zone. We calculate the survival probability of electron antineutrinos for cases without and with an anomalous accumulation of electrons which can be considered as a clear signal of the coming earthquake, at the geological region with a fault zone, and find that the variation may reach as much as 3% for $\bar ν_e$ emitted from a reactor. The case for a $ν_e$ beam from a neutrino factory is also investigated, and it is noted that, because of the typically high energy associated with such neutrinos, the oscillation length is too large and the resultant variation is not practically observable. Our conclusion is that with the present reactor facilities and detection techniques, it is still a difficult task to make an earthquake forecast using such a scheme, though it seems to be possible from a theoretical point of view while ignoring some uncertainties. However, with the development of the geology, especially the knowledge about the fault zone, and with the improvement of the detection techniques, etc., there is hope that a medium-term earthquake forecast would be feasible.
description: 6 pages, 4 figures, 1 table
Convexity properties of the condition number
Creators: name: Beltrán, Carlos
name: Dedieu, Jean-Pierre
name: Malajovich, Gregorio
name: Shub, Mike
Publisher: name: arXiv
Year: 2008
Subjects: subject: Numerical Analysis (math.NA)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 65F35;15A12;

description: We define in the space of n by m matrices of rank n, n less or equal than m, the condition Riemannian structure as follows: For a given matrix A the tangent space of A is equipped with the Hermitian inner product obtained by multiplying the usual Frobenius inner product by the inverse of the square of the smallest singular value of A denoted sigma_n(A). When this smallest singular value has multiplicity 1, the function A -> log (sigma_n(A)^(-2)) is a convex function with respect to the condition Riemannian structure that is t -> log (sigma_n(A(t))^(-2)) is convex, in the usual sense for any geodesic A(t). In a more abstract setting, a function alpha defined on a Riemannian manifold (M,) is said to be self-convex when log alpha (gamma(t)) is convex for any geodesic in (M,). Necessary and sufficient conditions for self-convexity are given when alpha is C^2. When alpha(x) = d(x,N)^(-2) where d(x,N) is the distance from x to a C^2 submanifold N of R^j we prove that alpha is self-convex when restricted to the largest open set of points x where there is a unique closest point in N to x. We also show, using this more general notion, that the square of the condition number ||A|||_F / sigma_n(A) is self-convex in projective space and the solution variety.
description: This article was improved for readbility, following referee suggestions
Improving Data Minimization through Decentralized Data Architectures
Creators: name: Battiston, Ilaria
name: Boncz, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: In this research project, we investigate an alternative to the standard cloud-centralized data architecture. Specifically, we aim to leave part of the application data under the control of the individual data owners in decentralized personal data stores. Our primary goal is to increase data minimization, i. e., enabling more sensitive personal data to be under the control of its owners while providing a straightforward and efficient framework to design architectures that allow applications to run and data to be analyzed. To serve this purpose, the centralized part of the schema contains aggregating views over this decentralized data. We propose to design a declarative language that extends SQL, for architects to specify different kinds of tables and views at the schema level, along with sensitive columns and their minimum granularity level of their aggregations. Local updates need to be reflected in the centralized views while ensuring privacy throughout intermediate calculations; for this we pursue the integration of distributed materialized view maintenance and multi-party computation (MPC) techniques. We finally aim to implement this system, where the personal data stores could either live in mobile devices or encrypted cloud storage, in order to evaluate its performance properties.
description: 4 pages, 1 figure
Thermal noises and noise compensation in high-reflection multilayer coating
Creators: name: Gorodetsky, Michael L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Thermal fluctuations of different origin in the substrate and in the coating of optical mirrors produce phase noise in the reflected wave. This noise determines the ultimate stabilization capability of high-Q cavities used as a reference system. In particular this noise is significant in interferometric laser gravitational wave antennas. It is shown that simple alteration of a mirror multilayer coating may provide suppression of phase noise produced by thermorefractive, thermoelastic, photothermal and thermoradiation induced fluctuations in the coating.
description: 10 pages, 5 figures
Plectiscidea canaliculata
Creators: name: Riedel
name: Pénigot
name: Schwarz
name: Diller
name: Johansson
name: Japoshvili, G.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Plectiscidea
Plectiscidea canaliculata

description: Plectiscidea canaliculata (FÖRSTER, 1871)
M a t e r i a l e x a m i n e d: Trap2: 1♀ 1-15.vi.
D i s t r i b u t i o n: Transpalaearctic, known from Azerbaijan (HUMALA 2003), new record for Georgia.
description: Published as part of Riedel, Pénigot, Schwarz, Diller, Johansson & Japoshvili, G., 2023, Darwin wasps (Hymenoptera, Ichneumonidae) of the Kintrishi National Park, Sakartvelo (Georgia), with descriptions of six new species, pp. 61-153 in Linzer biologische Beiträge 55 (1) on page 118, DOI: 10.5281/zenodo.10415120
МЕТОДЫ РАБОТЫ НАД ЛЕКСИКОЙ В ПРАКТИКЕ ПРЕПОДАВАНИЯ РУССКОГО ЯЗЫКА КАК ИНОСТРАННОГО
Creators: name: Хамиталиева, Камола
name: Тошматова, Наргис
name: Расулова, Шахло
name: Мирзаюнусова, З.И.
Publisher: name: Zenodo
Year: 2023

description: В статье представлены современные методики обучения лексике русского языка на занятиях со студентами-инофонами. Авторы отмечают, что современные педагоги придерживаются принципа коммуникативной направленности обучения, при этом коммуникативность должна просматриваться на каждом этапе обучения и при всех видах деятельности. Исследователи указывают, что на сегодняшний день существует большое количество методических рекомендаций, раскрывающих современные педагогические технологии в практике преподавания русского языка студентам-инофонам. Предварительная работа над лексикой является необходимым звеном для дальнейшего восприятия текста, для диалогической работы. Вместе с тем, по мнению авторов, данный вид деятельности является одним сложнейших в системе обучения в связи с постоянным пополнением и обогащением словаря русского языка.