cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Understanding Multilingual Learner’s Mathematical Experiences and Meaning Making in a Canadian Educational Setting
Creators: name: Assaf, Fatima
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: subject: Multilingual
subject: Mathematics
subject: FOS: Mathematics
subject: Sociocultural Theory
subject: Ethnography

description: This is an ethnographic study designed to form an in-depth description and understanding of multilingual learners’ mathematical experiences and meaning-making in a plurilingual educational setting. I assumed a sociocultural perspective that draws from Vygotsky’s theory of learning and development. A sociocultural perspective offers a promising epistemological conceptualization of children, their learning, and language development as mediated by social, cultural, and historical contexts. One grade 2/3 classroom with 18 students from Eritrea, Nepal, Somalia, Sudan, and Syria participated in the study. The data included observations, video recordings of students working on mathematics activities, copies of students’ work, and interviews with students. The results of the study revealed the teacher’s pedagogical practices as a significant influence on students’ mathematical meaning-making and learning experiences, which in turn influenced students’ individual identities as mathematics learners in the grade 2/3 classroom. There were also institutional and sociopolitical aspects that influenced the teacher’s practices, and in turn, influenced students’ mathematics experiences. Hence, the influences on students’ learning of mathematics take the form or shape of a reciprocal formation where one influence is connected to and influences the other. The findings of the analysis also show that it was the students’ interactions with one another that were at the heart of their meaning making. Students’ interactions were significant to their meaning making as they were constantly learning from one another. Little meaning making would have happened without these interactions. These interactions encouraged students to develop a collection of resources to share their thinking and ideas through verbal, visual, and written mathematical communications. Hence, utilizing language to make meaning and to negotiate their mathematical understanding. Ultimately, the descriptions of multilingual learners’ mathematics experiences and meaning making may inform research and practices to support other multilingual learners’ experiences in mathematics education. This study also contributes to what is still a very limited body of literature on multilingual students’ mathematical experiences and meaning in a Canadian educational setting.
Parallel Chip Firing Game associated with n-cube orientations
Creators: name: Ndoundam, René
name: Tchuente, Maurice
name: Tadonki, Claude
Publisher: name: arXiv
Year: 2010
Subjects: subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: We study the cycles generated by the chip firing game associated with n-cube orientations. We show the existence of the cycles generated by parallel evolutions of even lengths from 2 to $2^n$ on $H_n$ (n >= 1), and of odd lengths different from 3 and ranging from 1 to $2^{n-1}-1$ on $H_n$ (n >= 4).
Identification of Novel Proteins Involved in the Arbuscular Mycorrhizal Symbiosis
Creators: name: Price-Roberts, Bridget
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: effector
arbuscular mycorrhizal fungi

description: Arbuscular mycorrhizal fungi (AMF) form a mutually beneficial symbiotic relationship with a majority of land plants through an exchange of nutrients. Despite the importance of AM symbiosis in agricultural and ecological settings, relatively little is known about how the fungal symbiont actively promotes symbiosis. To overcome a host’s immune response, plant pathogens secrete effector proteins that modify a host to suppress an immune response. Few effectors have been identified in AMF, as bioinformatics methods have failed to accurately predict their sequences. To successfully colonize a plant, AMF form structures called arbuscules within plant root cortical cells. Arbuscules are a primary site of nutrient exchange during AMF symbiosis. This work is built on the hypothesis that AMF produce effector proteins to promote symbiosis, and that arbuscules are a site of effector secretion. Using Rhizophagus irregularis, Glomus versiforme and Medicago truncatula this work applies a proteomics-based approach using a new biotechnology to identify fungal proteins secreted by AMF. This novel approach using proteomics and proximity labelling to identify proteins by mass spectrometry is the first time this system has been used to study the plant-AMF relationship. In this work, mass spectrometry identifies a total of 24 R. irregularis proteins and two G. versiforme proteins that are candidate effectors involved in the plant-AMF symbiosis.
The asymmetry term in the nuclear-matter incompressibility from measurements on the giant monopole resonance: An Update
Creators: name: Garg, U.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have investigated the isoscalar giant monopole resonances (ISGMR) in $^{112-124}$Sn and $^{106-116}$Cd nuclei using inelastic scattering of 386-MeV $α$-particles at extremely forward angles, including 0$^\circ$. The strength distributions for various multipoles were extracted by a multipole decomposition analysis based on the expected angular distributions of the respective multipoles. From the ISGMR results, a value of $K_τ \sim -500$ MeV is obtained for the asymmetry term in the nuclear incompressibility.
description: Zakopane Conference on Nuclear Physics: Extremes of the Nuclear Landscape, 45th Zakopane Schools of Physics, 30. August- 5. September 2010, Zakopane, Poland
Appendix_2_time_contrasts.pdf from Temporary prey storage along swarm columns of army ants: an adaptive strategy for successful raiding?
Creators: name: Póvoas de Lima, Hilário
name: Teseo, Serafino
name: Leite Castro de Lima, Raquel
name: Souza Ferreira-Châline, Ronara
name: Châline, Nicolas
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: While pillaging the brood of other ant colonies, Eciton army ants accumulate prey in piles, or caches, along their foraging trails. Widely documented, these structures have historically been considered as by-products of heavy traffic or aborted relocations of the ants' temporary nest, or bivouac. However, we recently observed that caches of the hook-jawed army ant, Eciton hamatum, appeared independently from heavy traffic or bivouac relocations. In addition, the flow of prey through caches varied based on the quantity of prey items workers transported. As this suggested a potential adaptive function, we developed agent-based simulations to compare raids of caching and non-caching virtual army ants. We found that caches increased the amount of prey that relatively low numbers of raiders were able to retrieve. However, this advantage became less conspicuous—and generally disappeared—as the number of raiders increased. Based on these results, we hypothesize that caches maximize the amount of prey that limited amounts of raiders can retrieve, especially as prey colonies coordinately evacuate their brood. In principle, caches also allow workers to safely collect multiple-prey items and efficiently transport them to the bivouac. Further field observations are needed to test this and other hypotheses emerging from our study.
The Structure of 2MASS Galaxy Clusters
Creators: name: Blackburne, Jeffrey A.
name: Kochanek, Christopher S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use a sample of galaxies from the Two Micron All Sky Survey (2MASS) Extended Source Catalog to refine a matched filter method of finding galaxy clusters that takes into account each galaxy's position, magnitude, and redshift if available. The matched filter postulates a radial density profile, luminosity function, and line-of-sight velocity distribution for cluster galaxies. We use this method to search for clusters in the galaxy catalog, which is complete to an extinction-corrected K-band magnitude of 13.25 and has spectroscopic redshifts for roughly 40% of the galaxies, including nearly all brighter than K = 11.25. We then use a stacking analysis to determine the average luminosity function, radial distribution, and velocity distribution of cluster galaxies in several richness classes, and use the results to update the parameters of the matched filter before repeating the cluster search. We also investigate the correlations between a cluster's richness and its velocity dispersion and core radius, using these relations to refine priors that are applied during the cluster search process. After the second cluster search iteration, we repeat the stacking analysis. We find a cluster galaxy luminosity function that fits a Schechter form, with parameters M_K* - 5 log h = -23.64\pm0.04 and α= -1.07\pm0.03. We can achieve a slightly better fit to our luminosity function by adding a Gaussian component on the bright end to represent the brightest cluster galaxy (BCG) population. The radial number density profile of galaxies closely matches a projected Navarro-Frenk-White (NFW) profile at intermediate radii, with deviations at small radii due to well-known cluster centering issues and outside the virial radius due to correlated structure. The velocity distributions are Gaussian in shape, with velocity dispersions that correlate strongly with richness.
description: 13 pages, 10 figures, 3 tables. Updated to match version published in ApJ
Quasi-states, quasi-morphisms, and the moment map
Creators: name: Borman, Matthew Strom
Publisher: name: arXiv
Year: 2011
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We prove that symplectic quasi-states and quasi-morphisms on a symplectic manifold descend under symplectic reduction on a superheavy level set of a Hamiltonian torus action. Using a construction due to Abreu and Macarini, in each dimension at least four we produce a closed symplectic toric manifold with infinite dimensional spaces of symplectic quasi-states and quasi-morphisms, and a one-parameter family of non-displaceable Lagrangian tori. By using McDuff's method of probes, we also show how Ostrover and Tyomkin's method for finding distinct spectral quasi-states in symplectic toric Fano manifolds can also be used to find different superheavy toric fibers.
description: 22 pages, 7 figures; v3: minor corrections, added remarks, and altered numbering scheme to match published version. To appear in International Mathematics Research Notices
title: ÐÐ¸Ð½Ð³Ð²Ð¾ÐºÑÐ»ÑÑÑÑÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð¿ÐµÑÐµÐ²Ð¾Ð´Ð° Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ¼Ð¾ÑÐ° Ð² Ð¶Ð°Ð½ÑÐµ stand-up
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Linguoculturological features of translation of local-oriented stand-up humor
Creators: name: Ð¡Ð¾ÐºÐµÑÐ¸Ð½Ð°, ÐÐ½Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð»Ð¸Ð½Ð³Ð²Ð¾ÐºÑÐ»ÑÑÑÑÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸
Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¹ ÑÐ¼Ð¾Ñ
stand-up
Ð¿ÐµÑÐµÐ²Ð¾Ð´ÑÐµÑÐºÐ¸Ðµ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸
linguacultural features
locally oriented humor
translation transformations

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ñ Ð»Ð¸Ð½Ð³Ð²Ð¾ÐºÑÐ»ÑÑÑÑÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ñ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ Ð¿ÐµÑÐµÐ²Ð¾Ð´Ð° Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ¼Ð¾ÑÐ° Ð² Ð¶Ð°Ð½ÑÐµ stand-up. Ð£ÑÐµÑ Ð½Ð°ÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ Ð¸ ÐºÑÐ»ÑÑÑÑÐ½Ð¾Ð¹ ÑÐ¿ÐµÑÐ¸ÑÐ¸ÐºÐ¸ Ð¿ÐµÑÐµÐ²Ð¾Ð´Ð¸Ð¼Ð¾Ð³Ð¾ ÑÐ·ÑÐºÐ°, Ð·Ð½Ð°Ð½Ð¸Ðµ Ð¸ Ð³ÑÐ°Ð¼Ð¾ÑÐ½Ð¾Ðµ ÑÐ¿Ð¾ÑÑÐµÐ±Ð»ÐµÐ½Ð¸Ðµ Ð¿ÐµÑÐµÐ²Ð¾Ð´ÑÐµÑÐºÐ¸Ñ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¹ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑ Ð¿ÐµÑÐµÐ²Ð¾Ð´ÑÐ¸ÐºÑ Ð°Ð´ÐµÐºÐ²Ð°ÑÐ½Ð¾ Ð¿ÐµÑÐµÐ´Ð°ÑÑ ÑÐ¼ÑÑÐ», Ð·Ð°Ð»Ð¾Ð¶ÐµÐ½Ð½ÑÐ¹ stand-up ÐºÐ¾Ð¼Ð¸ÐºÐ¾Ð¼ Ð² Ð²ÑÑÑÑÐ¿Ð»ÐµÐ½Ð¸Ð¸.
description: The given work is devoted to the study and analysis of linguacultural features of the translation of locally oriented stand-up humor. Considering the national and cultural context of the translated language, competent use of translation transformations allows the interpreter to render correctly the sense put in by the stand-up comedian in the performance.
The PRIsm MUlti-Object Survey (PRIMUS) I: Survey Overview and Characteristics
Creators: name: Coil, Alison L.
name: Blanton, Michael R.
name: Burles, Scott M.
name: Cool, Richard J.
name: Eisenstein, Daniel J.
name: Moustakas, John
name: Wong, Kenneth C.
name: Zhu, Guangtun
name: Aird, James
name: Bernstein, Rebecca A.
name: Bolton, Adam S.
name: Hogg, David W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the PRIsm MUlti-object Survey (PRIMUS), a spectroscopic faint galaxy redshift survey to z~1. PRIMUS uses a low-dispersion prism and slitmasks to observe ~2,500 objects at once in a 0.18 deg^2 field of view, using the IMACS camera on the Magellan I Baade 6.5m telescope at Las Campanas Observatory. PRIMUS covers a total of 9.1 deg^2 of sky to a depth of i_AB~23.5 in seven different deep, multi-wavelength fields that have coverage from GALEX, Spitzer and either XMM or Chandra, as well as multiple-band optical and near-IR coverage. PRIMUS includes ~130,000 robust redshifts of unique objects with a redshift precision of dz/(1+z)~0.005. The redshift distribution peaks at z=0.6 and extends to z=1.2 for galaxies and z=5 for broad-line AGN. The motivation, observational techniques, fields, target selection, slitmask design, and observations are presented here, with a brief summary of the redshift precision; a companion paper presents the data reduction, redshift fitting, redshift confidence, and survey completeness. PRIMUS is the largest faint galaxy survey undertaken to date. The high targeting fraction (~80%) and large survey size will allow for precise measures of galaxy properties and large-scale structure to z~1.
description: 17 pages, 10 figures, accepted to ApJ, updated to match accepted version
On pomeron loop effects in deep inelastic scattering
Creators: name: Xiang, Wenchang
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Pomeron loop effects (gluon number fluctuations) on deep inelastic scattering (DIS) in the fixed coupling case are studied. We show that the description of the HERA data for the inclusive structure function $F_2(x,Q^2)$ for $x\leq10^{-2}$ and $0.045\leq Q^2\leq 45GeV^2$ is improved once pomeron loop effects are included.
description: 4 pages
Convergence of the Abelian sandpile
Creators: name: Pegden, Wesley
name: Smart, Charles K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 35R35

description: The Abelian sandpile growth model is a diffusion process for configurations of chips placed on vertices of the integer lattice $\mathbb{Z}^d$, in which sites with at least 2d chips {\em topple}, distributing 1 chip to each of their neighbors in the lattice, until no more topplings are possible. From an initial configuration consisting of $n$ chips placed at a single vertex, the rescaled stable configuration seems to converge to a particular fractal pattern as $n\to \infty$. However, little has been proved about the appearance of the stable configurations. We use PDE techniques to prove that the rescaled stable configurations do indeed converge to a unique limit as $n \to \infty$. We characterize the limit as the Laplacian of the solution to an elliptic obstacle problem.
description: 12 pages, 2 figures, acroread recommended for figure display
The production of negative carbon ions from volume-cusp ion sources
Creators: name: Melanson, Stéphane
Publisher: name: University of British Columbia
Year: 2020

description: The goal of this Thesis work is to develop and study high current negative carbon ion sources, that do not require the use of alkali metals, with the volume-cusp technology. Very few other ions other than H- and D- have been studied with this technology, and to the best of our knowledge, the production of negative carbon ions has never been investigated even though there are industrial advantages. Along with the industrial interest in the development of an alkali free, negative carbon ion source for ion implantation, there is a great opportunity to learn about the production of negative carbon ions in carbon rich plasmas. A test facility was developed for the purpose of this study, and the characteristics of the facility and the performance of the baseline filament-powered H- volume-cusp ion source are first presented. A radio frequency (RF) powered ion source was developed and the results of this new ion source with H- are presented. The performance of the extraction of negative carbon ions from the ion sources with various gases was studied. The plasma inside the ion source has been studied to determine how the ion source’s tuning parameters affect the species populations, the electron temperature and the electron density inside the different regions of the ion source. Finally, the ion source’s stability was improved.
Photon correlations in a two-site non-linear cavity system under coherent drive and dissipation
Creators: name: Ferretti, S.
name: Andreani, L. C.
name: Tureci, H. E.
name: Gerace, D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We calculate the normalized second-order correlation function for a system of two tunnel-coupled photonic resonators, each one exhibiting a single-photon nonlinearity of the Kerr type. We employ a full quantum formulation: the master equation for the model, which takes into account both a coherent continuous drive and radiative as well as non-radiative dissipation channels, is solved analytically in steady state through a perturbative approach, and the results are compared to exact numerical simulations. The degree of second-order coherence displays values between 0 and 1, and divides the diagram identified by the two energy scales of the system - the tunneling and the nonlinear Kerr interaction - into two distinct regions separated by a crossover. When the tunneling term dominates over the nonlinear one, the system state is delocalized over both cavities and the emitted light is coherent. In the opposite limit, photon blockade sets in and the system shows an insulator-like state with photons locked on each cavity, identified by antibunching of emitted light.
description: 9 pages, 4 figures, to appear in Phys. Rev. A
Table_S4_Netlogo_model_specs.pdf from Temporary prey storage along swarm columns of army ants: an adaptive strategy for successful raiding?
Creators: name: Póvoas de Lima, Hilário
name: Teseo, Serafino
name: Leite Castro de Lima, Raquel
name: Souza Ferreira-Châline, Ronara
name: Châline, Nicolas
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: While pillaging the brood of other ant colonies, Eciton army ants accumulate prey in piles, or caches, along their foraging trails. Widely documented, these structures have historically been considered as by-products of heavy traffic or aborted relocations of the ants' temporary nest, or bivouac. However, we recently observed that caches of the hook-jawed army ant, Eciton hamatum, appeared independently from heavy traffic or bivouac relocations. In addition, the flow of prey through caches varied based on the quantity of prey items workers transported. As this suggested a potential adaptive function, we developed agent-based simulations to compare raids of caching and non-caching virtual army ants. We found that caches increased the amount of prey that relatively low numbers of raiders were able to retrieve. However, this advantage became less conspicuous—and generally disappeared—as the number of raiders increased. Based on these results, we hypothesize that caches maximize the amount of prey that limited amounts of raiders can retrieve, especially as prey colonies coordinately evacuate their brood. In principle, caches also allow workers to safely collect multiple-prey items and efficiently transport them to the bivouac. Further field observations are needed to test this and other hypotheses emerging from our study.
title: Evaluation of hydraulic efficiency of lined irrigation channels - A case study from Punjab, Pakistan
Creators: name: Zakir-Hassana, Ghulam
name: Akram Kahlownd, Muhammad
name: Punthakey, Jehangir F.
name: Shabira, Ghulam
name: Azize, Marjan
name: Sultanf, Muhammad
name: Ashraff, Hadeed
name: Nawazg, Qurrat Ul Ain
name: Majeed, Faizan
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: canal lining
subject: groundwater recharge
subject: hydraulic performance
subject: Pakistan
subject: seepage
subject: socioeconomic impact
subject: 620
subject: Pakistan
subject: Indus
subject: Versickerung
subject: Grundwasseranreicherung
subject: Hydraulik
subject: Sozioökonomischer Wandel
subject: Bewässerungssystem

description: Gefördert durch den Publikationsfonds der Universität Kassel
Observations of X-ray flares and associated MHD oscillations in star XI Boo
Creators: name: Pandey, J. C.
name: Srivastava, A. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using data from observations made with XMM-Newton, we present an X-ray analysis of two flares observed in $ξ$ Boo. The flare loop parameters are derived using various loop models including state-of-the-art hydrodynamic flare model. The loop lengths derived for the flaring loop structure are found to be less than the stellar radius. The exponential decay of the X-ray light curves, and time evolution of the plasma temperature and emission measure are similar to those observed in compact solar flares. The X-ray light curve of post flare phase is investigated with wavelet analysis. Wavelet analysis clearly show oscillations of the period of 1019 s. Using the observationally estimated loop length, density and magnetic field, the theoretically derived oscillation period for fast-kink mode approximately matches with the observationally estimated period. This is the first likely observational evidence of fundamental fast-kink mode of magnetoacoustic waves in the stellar loops during the post-flare phase of heightened emission.
description: 13 pages, 6 figures, 2 tables; Accepted for the publication in "Advances in Geosciences"
Supplementary Information text.docx from Temporary prey storage along swarm columns of army ants: an adaptive strategy for successful raiding?
Creators: name: Póvoas de Lima, Hilário
name: Teseo, Serafino
name: Leite Castro de Lima, Raquel
name: Souza Ferreira-Châline, Ronara
name: Châline, Nicolas
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: While pillaging the brood of other ant colonies, Eciton army ants accumulate prey in piles, or caches, along their foraging trails. Widely documented, these structures have historically been considered as by-products of heavy traffic or aborted relocations of the ants' temporary nest, or bivouac. However, we recently observed that caches of the hook-jawed army ant, Eciton hamatum, appeared independently from heavy traffic or bivouac relocations. In addition, the flow of prey through caches varied based on the quantity of prey items workers transported. As this suggested a potential adaptive function, we developed agent-based simulations to compare raids of caching and non-caching virtual army ants. We found that caches increased the amount of prey that relatively low numbers of raiders were able to retrieve. However, this advantage became less conspicuous—and generally disappeared—as the number of raiders increased. Based on these results, we hypothesize that caches maximize the amount of prey that limited amounts of raiders can retrieve, especially as prey colonies coordinately evacuate their brood. In principle, caches also allow workers to safely collect multiple-prey items and efficiently transport them to the bivouac. Further field observations are needed to test this and other hypotheses emerging from our study.
Spectral properties in supersymmetric matrix models
Creators: name: Boulton, Lyonell
name: del Moral, Maria Pilar Garcia
name: Restuccia, Alvaro
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We formulate a general sufficiency criterion for discreteness of the spectrum of both supersymmmetric and non-su-persymmetric theories with a fermionic contribution. This criterion allows an analysis of Hamiltonians in complete form rather than just their semiclassical limits. In such a framework we examine spectral properties of various (1+0) matrix models. We consider the BMN model of M-theory compactified on a maximally supersymmetric pp-wave background, different regularizations of the supermembrane with central charges and a non-supersymmetric model comprising a bound state of N D2 with m D0. While the first two examples have a purely discrete spectrum, the latter has a continuous spectrum with a lower end given in terms of the monopole charge.
description: 40 pages, 5 figures
In Memoriam Frieda Herold
Creators: name: Marys, Edgloris
Publisher: name: Zenodo
Year: 2020
Subjects: Virología
Año Internacional de la Sanidad Vegetal 2020
Venezuela

description: La Dra. Frieda Herold, es considerada por muchos fitopatólogos como la “madre” de la virología vegetal en Venezuela. Viróloga eminente de origen alemán, la Dra. Herold llega al país durante la década de los 50, prestada por la Fundación Alemana Iberoamericana, y ejerce como Investigadora Invitada en el Instituto Nacional de Higiene (INH), a razón de su experiencia en enfermedades virales tropicales humanas. Sin embargo, su interés principal era la botánica, especialmente los virus de plantas. Por tal motivo, fue convocada en 1959 a organizar un laboratorio de virología vegetal en el Instituto Venezolano de Investigaciones Científicas (IVIC) por su compatriota, el Dr. Gernot Bergold, quien tenía entonces la tarea de crear el Departamento de Virología del IVIC. En 1964 se inaugura el “Centro de Virología Louis Daniel Beauperthuy”, construido y dotado con ayuda del estado alemán.
Constraints on the flux of Ultra-High Energy neutrinos from WSRT observations
Creators: name: Buitink, S.
name: Scholten, O.
name: Bacelar, J.
name: Braun, R.
name: de Bruyn, A. G.
name: Falcke, H.
name: Singh, K.
name: Stappers, B.
name: Strom, R. G.
name: Yahyaoui, R. al
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Ultra-high energy (UHE) neutrinos and cosmic rays initiate particle cascades underneath the Moon's surface. These cascades have a negative charge excess and radiate Cherenkov radio emission in a process known as the Askaryan effect. The optimal frequency window for observation of these pulses with radio telescopes on the Earth is around 150 MHz. By observing the Moon with the Westerbork Synthesis Radio Telescope array we are able to set a new limit on the UHE neutrino flux. The PuMa II backend is used to monitor the Moon in 4 frequency bands between 113 and 175 MHz with a sampling frequency of 40 MHz. The narrowband radio interference is digitally filtered out and the dispersive effect of the Earth's ionosphere is compensated for. A trigger system is implemented to search for short pulses. By inserting simulated pulses in the raw data, the detection efficiency for pulses of various strength is calculated. With 47.6 hours of observation time, we are able to set a limit on the UHE neutrino flux. This new limit is an order of magnitude lower than existing limits. In the near future, the digital radio array LOFAR will be used to achieve an even lower limit.
description: 13 pages, 17 figures, accepted for publication in Astronomy & Astrophysics
Il tempo libero e lo sviluppo socio-emotivo di un preadolescente
Creators: name: Beltrami, Martina
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2012

description: Il lavoro svolto si è occupato di cercare un’eventuale influenza dell’impiego del tempo libero nello sviluppo socio-emotivo dei preadolescenti. La metodologia seguita è suddivisa in tre fasi fondamentali: la somministrazione del questionario, la raccolta dei dati e l’analisi di questi ultimi. Ciò che ho potuto concludere dall’analisi dei dati è che una relazione tra queste due sfere esiste: l’impiego del tempo libero incide in qualche modo lo sviluppo socio-emotivo dei preadolescenti che hanno compilato il questionario. Il dato che ha ottenuto più conferme nel corso della mia ricerca, dimostra che tutti coloro che occupano il proprio tempo libero con attività sportive, artistiche o ludiche, risultano molto sensibili nei confronti del prossimo. Dal punto di vista di docente trovo molto interessanti i risultati ricavati e penso che le istituzioni scolastiche debbano incrementare il lavoro sulla sfera socio-emotiva, in modo da creare delle persone consapevoli sia delle proprie emozioni sia di quelle altrui. Ogni docente, all’interno della propria materia, potrebbe impegnarsi ad inserire nella programmazione dei momenti dedicati alle emozioni, in modo da sensibilizzarsi e sensibilizzare la propria classe. Relatori: Luca Sciaroni e Alberto Crescentini. Materia: scienze dell'educazione
Hydrodynamic coupling between two fluid membranes
Creators: name: Ramachandran, Sanoop
name: Komura, Shigeyuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The coupled in-plane diffusion dynamics between point-particles embedded in stacked fluid membranes are investigated. We calculate the contributions to the coupling longitudinal and transverse diffusion coefficients due to particle motion within the different as well as the same membranes. The stacked geometry leads to a hydrodynamic coupling between the two membranes.
description: 9 Pages, 5 figures. Accepted for publication in J. Phys.: Condens. Matter
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¾ÐµÐºÑÐ° Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð° Ð¿ÑÑÐµÐ¿ÑÐ¾Ð²Ð¾Ð´Ð°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of the project of the organization of construction of the overpass
Creators: name: ÐÐ°ÑÐ°ÑÐµÐ², ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÑÑÑÐ´Ð¾Ð·Ð°ÑÑÐ°ÑÑ
ÑÐ¸ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¿Ð»Ð°Ð½
Ð³ÐµÐ½ÐµÑÐ°Ð»ÑÐ½ÑÐ¹ Ð¿Ð»Ð°Ð½ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°
ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ°Ñ ÑÑ ÐµÐ¼Ð°
Ð¿ÑÐ¾Ð´Ð¾Ð»Ð¶Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°
ÐºÐ°Ð»ÐµÐ½Ð´Ð°ÑÐ½ÑÐ¹ Ð¿Ð»Ð°Ð½
labor costs
situation plan
general plan of constuction
technological scheme
duration of construction
calendar plan

description: Ð ÑÐ°Ð±Ð¾ÑÐµ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿ÑÐ¾ÐµÐºÑÐ° Ð¿ÑÑÐµÐ¿ÑÐ¾Ð²Ð¾Ð´Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿ÑÐ¾ÐµÐºÑ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð´Ð²ÑÑ Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ¾Ð² Ð¿Ð¾Ð³ÑÑÐ¶ÐµÐ½Ð¸Ñ ÑÐ²Ð°Ð¹ ÑÑÐ½Ð´Ð°Ð¼ÐµÐ½ÑÐ¾Ð² Ð¾Ð¿Ð¾Ñ Ð¸ Ð´Ð²ÑÑ Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ¾Ð² Ð¼Ð¾Ð½ÑÐ°Ð¶Ð° Ð±Ð°Ð»Ð¾Ðº Ð¿ÑÐ¾Ð»ÐµÑÐ½ÑÑ ÑÑÑÐ¾ÐµÐ½Ð¸Ð¹. ÐÐ¿Ð¸ÑÐ°Ð½Ð° Ð¿ÑÐ¸Ð½ÑÑÐ°Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ñ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð° Ð¿ÑÑÐµÐ¿ÑÐ¾Ð²Ð¾Ð´Ð°. ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¸ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ñ Ð¿Ð¾ÑÑÐµÐ±Ð½Ð¾ÑÑÐ¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð° Ð² ÐºÐ°Ð´ÑÐ°Ñ Ð¸ Ð¶Ð¸Ð»ÑÐµ, Ð¼Ð°ÑÐ¸Ð½Ð°Ñ Ð¸ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼Ð°Ñ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ Ð³ÐµÐ½ÐµÑÐ°Ð»ÑÐ½ÑÐ¹ Ð¸ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¿Ð»Ð°Ð½Ñ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð°, ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐµÐ¼Ñ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð° Ð¾Ð¿Ð¾Ñ Ð¸ Ð¼Ð¾Ð½ÑÐ°Ð¶Ð° Ð±Ð°Ð»Ð¾Ðº Ð¿ÑÐ¾Ð»ÐµÑÐ½ÑÑ ÑÑÑÐ¾ÐµÐ½Ð¸Ð¹, ÐºÐ°Ð»ÐµÐ½Ð´Ð°ÑÐ½ÑÐ¹ Ð¿Ð»Ð°Ð½ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð° Ð¿ÑÑÐµÐ¿ÑÐ¾Ð²Ð¾Ð´Ð°.
description: In this work on the basis of the project of the overpass the project of the organization of construction is developed. The comparison of two variants of immersion of piles of foundations of supports and two variants of installation of beams of superstructures is made. The technology adopted for the construction of the overpass describes. The needs of construction personnel and housing, machinery and mechanisms are identified and justified. The General and situational plans of construction, technological schemes of construction of supports and installation of beams of superstructures, the calendar plan of construction of the overpass are developed.
Piano generale di smaltimento delle acque Comune di Brusino Arsizio
Creators: name: Cattaneo, Alois
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2023

description: Lo scopo principale del seguente progetto è quello di avere un sistema di smaltimento corretto per le acque del comune. Il comune non presentava un allacciamento all’impianto di depurazione (IDA) di Mendrisio; infatti, le acque luride venivano scaricate e smaltite sul posto. Elaborando un piano generale si smaltimento (PGS), si vuole aumentare la qualità e l’efficienza del servizio ed inoltre avere una rete di canalizzazioni corretta e funzionale. Essendo Brusino Arsizio, un comune con una conformazione del terreno prevalentemente pianeggiante, per poter raggiungere l’IDA di Mendrisio, sono necessarie varie stazioni di pompaggio. Una di esse è stata l’argomento del progetto definitivo.
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ð¸ ÑÐ°Ð¼Ð°ÑÐ¸Ñ Ð½Ð° ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ½ÑÑ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ Ð²Ð°Ð½Ð°Ð´Ð°ÑÐ° Ð¸ÑÑÑÐ¸Ñ, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¼ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ ÐÐµÑÐ¸Ð½Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Study of the effect of samarium concentration on properties of luminescent nanoparticles of yttrium vanadate obtained by the modified Pechini method
Creators: name: ÐÐ¾ÑÐ¾Ð·Ð¾Ð²Ð°, ÐÐ°Ð»ÐµÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÐÐ°Ð½Ð¾ÑÑÑÑÐºÑÑÑÐ½ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ
ÐÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ¸Ñ
ÐÑÑÑÐ¸Ð¹
ÐÐ°Ð½Ð°Ð´Ð¸Ð¹, ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ñ
Ð¡Ð°Ð¼Ð°ÑÐ¸Ð¹
Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ½ÑÐµ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸ÑÑ
Ð²Ð°Ð½Ð°Ð´Ð°Ñ Ð¸ÑÑÑÐ¸Ñ

description: Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð»ÑÑ Ð¼ÐµÑÐ¾Ð´ ÐÐµÑÐ¸Ð½Ð¸ Ð´Ð»Ñ ÑÐ¸Ð½ÑÐµÐ·Ð° Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ½ÑÑ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð¸Ð¾Ð½Ð°Ð¼Ð¸ ÑÐ°Ð¼Ð°ÑÐ¸Ñ. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ½ÑÑ ÑÐ²Ð¾Ð¹ÑÑÐ² Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ ÑÐ°Ð·Ð½ÑÑ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ð¹. ÐÐ¾Ð»ÑÑÐµÐ½Ñ Ð´Ð¸ÑÑÐ°ÐºÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð¸ ÑÐ´ÐµÐ»Ð°Ð½Ð° ÑÐºÐ°Ð½Ð¸ÑÑÑÑÐ°Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð°Ñ Ð¼Ð¸ÐºÑÐ¾ÑÐºÐ¾Ð¿Ð¸Ñ Ð´Ð»Ñ Ð¾Ð±ÑÐ°Ð·ÑÐ° Ð²Ð°Ð½Ð°Ð´Ð°ÑÐ° Ð¸ÑÑÑÐ¸Ñ Ñ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸ÐµÐ¹ ÑÐ°Ð¼Ð°ÑÐ¸Ñ 2%.
Ð Ð·Ð°ÐºÐ»ÑÑÐµÐ½Ð¸Ð¸ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ°Ð±Ð¾ÑÑ Ð¸ Ð²ÑÐ²Ð¾Ð´Ñ.
description: In this work, the Pechini method was used to synthesize luminescent nanoparticles doped with samarium ions. Studies of the luminescent properties of nanoparticles of different concentrations were carried out. Diffractograms were obtained and scanning electron microscopy was made for the sample yttrium vanadate doped with samarium with a concentration of 2%. In conclusion, the main results of the work and conclusions.
In Memoriam Dilcia Ulacio (1962-2015)
Creators: name: Rodríguez, Dorian
name: Sanabria-Chópite, María Elena
Publisher: name: Zenodo
Year: 2021
Subjects: Fitopatología
Venezuela
Año Internacional de la Sanidad Vegetal 2020

description: Nació en San Felipe, en el año 1962. Egresó como Ingeniero Agrónomo de la Universidad Experimental del Llano Ezequiel Zamora (UNELLEZ), egresó como Magister Scientiarum en el Postgrado de Fitopatología de la Universidad Centroccidental Lisandro Alvarado (UCLA); obtuvo su Doctorado en la Escuela de Postgraduados de Montecillo, México. Fue profesora de Fitopatología y de Epidemiología de Enfermedades en Pre y Postgrado de la UCLA; coordinó el Área de Fitopatología del Postgrado de Agronomía en la misma Universidad, fue Directora del Instituto Nacional de Investigaciones Agrícolas (INIA) Portuguesa. También, dirigió la Unidad Técnica Yaracuy, del Ministerio del Poder Popular para la Ciencia, Tecnología e Innovación y fue tesorera de la Sociedad Venezolana de Fitopatología (2009-2011). A pesar de su especial interés por la etiología, la epidemiología y control de las enfermedades a través de métodos alternativos, como el biológico y el orgánico, Ulacio era un factor común en la mayoría de los proyectos de investigación del área de la fitopatología, participando con entusiasmo y responsabilidad. Concentró su investigación en los cultivos de arroz, leguminosas, hortalizas y frutales.
Table S2.pdf from Temporary prey storage along swarm columns of army ants: an adaptive strategy for successful raiding?
Creators: name: Póvoas de Lima, Hilário
name: Teseo, Serafino
name: Leite Castro de Lima, Raquel
name: Souza Ferreira-Châline, Ronara
name: Châline, Nicolas
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: While pillaging the brood of other ant colonies, Eciton army ants accumulate prey in piles, or caches, along their foraging trails. Widely documented, these structures have historically been considered as by-products of heavy traffic or aborted relocations of the ants' temporary nest, or bivouac. However, we recently observed that caches of the hook-jawed army ant, Eciton hamatum, appeared independently from heavy traffic or bivouac relocations. In addition, the flow of prey through caches varied based on the quantity of prey items workers transported. As this suggested a potential adaptive function, we developed agent-based simulations to compare raids of caching and non-caching virtual army ants. We found that caches increased the amount of prey that relatively low numbers of raiders were able to retrieve. However, this advantage became less conspicuous—and generally disappeared—as the number of raiders increased. Based on these results, we hypothesize that caches maximize the amount of prey that limited amounts of raiders can retrieve, especially as prey colonies coordinately evacuate their brood. In principle, caches also allow workers to safely collect multiple-prey items and efficiently transport them to the bivouac. Further field observations are needed to test this and other hypotheses emerging from our study.
In Memoriam Gladys Rodríguez (1955-2020)
Creators: name: León-Brito, Oralys
name: Barrios-Maestre, Renny
Publisher: name: Zenodo
Year: 2020
Subjects: Entomología
Año Internacional de la Sanidad Vegetal 2020
Venezuela

description: Gladys del Carmen Rodríguez González nació en Carúpano, estado Sucre, el 1 de mayo de 1955. Realizó sus estudios académicos en el Núcleo Monagas de la Universidad de Oriente (UDO)-Venezuela, donde desarrolló su primer trabajo de investigación titulado “Determinación de niveles de importancia económica del gusano Spodoptera frugiperda en maíz”. Este correspondió a su trabajo de grado, como requisito para optar al título de Ingeniero Agrónomo que obtuvo en el año 1981. Desde ese momento mostró interés por el estudio de los insectos que afectan a los cultivos. Se desempeñó como profesor Instructor de Prácticas de Entomología General en la Escuela de Ingeniería Agronómica de la Universidad de Oriente en 1983.
Ultra-sensitive detection of mode splitting in active optical microcavities
Creators: name: He, Lina
name: Ozdemir, Sahin Kaya
name: Zhu, Jiangang
name: Yang, Lan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Scattering induced mode splitting in active microcavities is demonstrated. Below the lasing threshold, quality factor enhancement by optical gain allows resolving, in the wavelength-scanning transmission spectrum, the resonance dips of the split modes which otherwise would not be detected in a passive resonator. In the lasing regime, mode splitting manifests itself as two lasing modes with extremely narrow linewidths. Mixing of these laser modes in a detector leads to a heterodyne beat signal whose frequency corresponds to the amount of splitting. Lasing regime not only allows ultrahigh sensitivity for mode-splitting measurements but also provides an easily accessible scheme by eliminating the need for wavelength scanning around resonant modes. Mode splitting in active microcavities has immediate impact in enhancing the sensitivity of sub-wavelength scatterer detection and in studying light-matter interactions in strong coupling regime.
description: 5 pages, 5 figures, 14 references
Froissart bound and gluon number fluctuations
Creators: name: Xiang, Wenchang
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effect of gluon number fluctuations (Pomeron loops) on the impact parameter behavior of the scattering amplitude in the fixed coupling case. We demonstrate that the dipole-hadron cross-section computed from gluon number fluctuations saturates the Froissart bound and the growth of the radius of the black disk with rapidity is enhanced by an additional term as compared to the single event case. We find that the physical amplitude has a Gaussian impact parameter dependence once the gluon number fluctuations are included. This indicates that the fluctuations may be the microscopic origin for the Gaussian impact parameter dependence of the scattering amplitude.
description: 7 pages
Uganda Genome Resource Enables Insights into Population History and Genomic Discovery in Africa
Creators: name: Kadie, C.
name: Cooper, D.N.
name: Reiner, A.P.
name: Morris, A.P.
name: Young, E.H.
name: Pomilla, C.
name: Mathieson, I.
name: Schiffels, S.
name: Franceschini, N.
name: Carstensen, T.
name: Chen, L.
name: Maher, D.P.
name: DeGorter, M.K.
name: Tyler-Smith, C.
name: Fatumo, S.
name: Ehret, G.
name: Elding, H.
name: Adeyemo, A.
name: Nsubuga, R.N.
name: Zeggini, E.
name: Fortune, M.D.
name: Asiki, G.
name: Chen, G.
name: Franklin, C.S.
name: Finan, C.
name: Montgomery, S.B.
name: Bouman, H.
name: Auer, P.L.
name: Gurdasani, D.
name: Barroso, I.
name: Rotimi, C.
name: Pirie, F.
name: Kamali, A.
name: Ekoru, K.
name: Soranzo, N.
name: Seeley, J.
name: Garrison, E.
name: Ritchie, G.R.S.
name: Wheeler, E.
name: Hatzikotoulas, K.
name: Kooperberg, C.L.
name: Pollard, M.O.
name: Abascal, F.
name: Haber, M.
name: Chen, Y.
name: Widmer, C.
name: Kaleebu, P.
name: Tachmazidou, I.
name: Motala, A.
name: Wain, L.V.
name: Doumatey, A.
name: Heckerman, D.
name: Prado-Martinez, J.
name: Bergström, A.
name: Sandhu, M.S.
name: Mentzer, A.J.
name: Xue, Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Genomic studies in African populations provide unique opportunities to understand disease etiology, human diversity, and population history. In the largest study of its kind, comprising genome-wide data from 6,400 individuals and whole-genome sequences from 1,978 individuals from rural Uganda, we find evidence of geographically correlated fine-scale population substructure. Historically, the ancestry of modern Ugandans was best represented by a mixture of ancient East African pastoralists. We demonstrate the value of the largest sequence panel from Africa to date as an imputation resource. Examining 34 cardiometabolic traits, we show systematic differences in trait heritability between European and African populations, probably reflecting the differential impact of genes and environment. In a multi-trait pan-African GWAS of up to 14,126 individuals, we identify novel loci associated with anthropometric, hematological, lipid, and glycemic traits. We find that several functionally important signals are driven by Africa-specific variants, highlighting the value of studying diverse populations across the region. Genome-wide data from Ugandans reveal insights into their ancestry, trait heritability, and loci associated with metabolic parameters, thereby providing a diverse resource for the study of African population genetics.
In Memoriam Dilcia Ulacio (1962-2015)
Creators: name: Rodríguez, Dorian
name: Sanabria-Chópite, María Elena
Publisher: name: Zenodo
Year: 2020
Subjects: Fitopatología
Venezuela
Año Internacional de la Sanidad Vegetal 2020

description: Nació en San Felipe, en el año 1962. Egresó como Ingeniero Agrónomo de la Universidad Experimental del Llano Ezequiel Zamora (UNELLEZ), egresó como Magister Scientiarum en el Postgrado de Fitopatología de la Universidad Centroccidental Lisandro Alvarado (UCLA); obtuvo su Doctorado en la Escuela de Postgraduados de Montecillo, México. Fue profesora de Fitopatología y de Epidemiología de Enfermedades en Pre y Postgrado de la UCLA; coordinó el Área de Fitopatología del Postgrado de Agronomía en la misma Universidad, fue Directora del Instituto Nacional de Investigaciones Agrícolas (INIA) Portuguesa. También, dirigió la Unidad Técnica Yaracuy, del Ministerio del Poder Popular para la Ciencia, Tecnología e Innovación y fue tesorera de la Sociedad Venezolana de Fitopatología (2009-2011). A pesar de su especial interés por la etiología, la epidemiología y control de las enfermedades a través de métodos alternativos, como el biológico y el orgánico, Ulacio era un factor común en la mayoría de los proyectos de investigación del área de la fitopatología, participando con entusiasmo y responsabilidad. Concentró su investigación en los cultivos de arroz, leguminosas, hortalizas y frutales.
L’apprendimento di una lingua seconda tra difficoltà e risorse
Creators: name: Minola, Sabina
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2016

description: Questo scritto tratta il tema dell’apprendimento di una seconda lingua nella scuola dell’infanzia. Vengono illustrati i principali fattori cognitivi, socio-affettivi e linguistici coinvolti nell’apprendimento di una seconda lingua individuando tra questi gli aspetti favorevoli e quelli che ostacolano l’acquisizione linguistica. L’analisi iniziale verte su alcune caratteristiche dell’apprendente come parte del processo apprendimento- insegnamento messe in relazione con l’insegnante e il contesto, per individuare le modalità più efficaci e le risorse a cui attingere per favorire l’acquisizione linguistica . La ricerca è stata condotta seguendo la metodologia della ricerca azione, osservando in particolare due bambine alloglotte e proponendo un percorso di stimolazione linguistica. I dati raccolti sono stati messi in relazione con il quadro teorico per un confronto. Il risultato di questa ricerca è una maggiore consapevolezza degli aspetti implicati nell’apprendimento di una seconda lingua, di come si possono osservare e delle risorse da attivare. Relatrice: Daniela Kappler