cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Zone-plate focusing of Bose-Einstein condensates for atom optics and erasable high-speed lithography of quantum electronic components
Creators: name: Judd, T. E.
name: Scott, R. G.
name: Sinuco, G.
name: Montgomery, T. W. A.
name: Martin, A. M.
name: Krüger, P.
name: Fromhold, T. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We show that Fresnel zone plates, fabricated in a solid surface, can sharply focus atomic Bose-Einstein condensates that quantum reflect from the surface or pass through the etched holes. The focusing process compresses the condensate by orders of magnitude despite inter-atomic repulsion. Crucially, the focusing dynamics are insensitive to quantum fluctuations of the atom cloud and largely preserve the condensates' coherence, suggesting applications in passive atom-optical elements, for example zone plate lenses that focus atomic matter waves and light at the same point to strengthen their interaction. We explore transmission zone-plate focusing of alkali atoms as a route to erasable and scalable lithography of quantum electronic components in two-dimensional electron gases embedded in semiconductor nanostructures. To do this, we calculate the density profile of a two-dimensional electron gas immediately below a patch of alkali atoms deposited on the surface of the nanostructure by zone-plate focusing. Our results reveal that surface-induced polarization of only a few thousand adsorbed atoms can locally deplete the electron gas. We show that, as a result, the focused deposition of alkali atoms by existing zone plates can create quantum electronic components on the 50 nm scale, comparable to that attainable by ion beam implantation but with minimal damage to either the nanostructure or electron gas.
description: 13 pages, 7 figures
On the Validity of the 0-1 Test for Chaos
Creators: name: Gottwald, Georg A.
name: Melbourne, Ian
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper, we present a theoretical justification of the 0-1 test for chaos. In particular, we show that with probability one, the test yields 0 for periodic and quasiperiodic dynamics, and 1 for sufficiently chaotic dynamics.
Intelligent surveillance with multimodal object detection in complex environments
Creators: name: Cao, Yue
Publisher: name: University of British Columbia
Year: 2024

description: Surveillance systems play a crucial role in ensuring public safety. With the advent of deep learning algorithms, these systems have evolved from passive monitoring tools that heavily relied on human operators, to advanced solutions capable of autonomously analyzing scenes with minimal human input. However, accurately detecting objects of interest in real-world scenarios presents a significant challenge due to the dynamic illumination and the varying sizes of objects. This research aims to enhance the accuracy and robustness of intelligent surveillance systems for object detection in complex environments by integrating two complementary sensor data: visible light (RGB) and infrared (IR) images. First, a multimodal detection framework is developed building upon the Faster R-CNN architecture, which is capable of integrating features from both RGB and IR images for enhanced object detection. Following this, Poolfuser, a transformer-based fusion module, is introduced and incorporated into the detection framework to fuse features from various modalities from spatial perspective. This approach emphasizes the critical features for target detection. Experimental results show that the multimodal framework equipped with Poolfuser significantly outperforms unimodal detectors and other competing multimodal approaches in terms of detection accuracy in complex environments. Secondly, to further improve the detection accuracy of the multimodal detection framework without introducing additional computational load, a lightweight fusion module based on Convolutional Neural Networks (CNN) is introduced. This module, termed Channel Switching and Spatial Attention (CSSA), integrates input features from both channel and spatial dimensions. The experimental results demonstrate that the CSSA module can further improve the detection accuracy without affecting the real-time performance of the detection framework. Finally, considering the impact of other components, such as the backbone network and the loss function on detection performance. This study further optimizes the CSSA-based multimodal detection model and introduces CSSA-Det. CSSA-Det shows improved object detection performance over CSSA and other state-of-the-art multimodal frameworks, particularly in the accuracy of bounding box localization.
Sustained Magnetorotational Turbulence in Local Simulations of Stratified Disks with Zero Net Magnetic Flux
Creators: name: Davis, S. W.
name: Stone, J. M.
name: Pessah, M. E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine the effects of density stratification on magnetohydrodynamic turbulence driven by the magnetorotational instability in local simulations that adopt the shearing box approximation. Our primary result is that, even in the absence of explicit dissipation, the addition of vertical gravity leads to convergence in the turbulent energy densities and stresses as the resolution increases, contrary to results for zero net flux, unstratified boxes. The ratio of total stress to midplane pressure has a mean of ~0.01, although there can be significant fluctuations on long (>~50 orbit) timescales. We find that the time averaged stresses are largely insensitive to both the radial or vertical aspect ratio of our simulation domain. For simulations with explicit dissipation, we find that stratification extends the range of Reynolds and magnetic Prandtl numbers for which turbulence is sustained. Confirming the results of previous studies, we find oscillations in the large scale toroidal field with periods of ~10 orbits and describe the dynamo process that underlies these cycles.
description: 13 pages, 18 figures, submitted to ApJ
Thermodynamics of layered Heisenberg magnets with arbitrary spin
Creators: name: Junger, I. Juhász
name: Ihle, D.
name: Richter, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a spin-rotation-invariant Green-function theory of long- and short-range order in the ferro- and antiferromagnetic Heisenberg model with arbitrary spin quantum number S on a stacked square lattice. The thermodynamic quantities (Curie temperature T_C, Néel temperature T_N, specific heat C_V, intralayer and interlayer correlation lengths) are calculated, where the effects of the interlayer coupling and the S dependence are explored. In addition, exact diagonalizations on finite two-dimensional (2D) lattices with S>=1 are performed, and a very good agreement between the results of both approaches is found. For the quasi-2D and isotropic 3D magnets, our theory agrees well with available quantum Monte Carlo and high-temperature series-expansion data. Comparing the quasi-2D S=1/2 magnets, we obtain the inequalities T_N>T_C and, for small enough interlayer couplings, T_N
description: 10 pages, 8 figures, 3 tables, submitted to Physical Review B
Repeat Breeding: Incidence, Risk Factors, Diagnosis and Treatment in Buffaloes
Creators: name: Ravindra Jadav1, Keshav1, Birth Patel2, Anand Parikh2
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: Buffalo are crucial to the upkeep of a sustainable food production system. However, due in significant part to inadequate management of health, nutrition, and breeding, buffalo productivity remains low (Warriach et al., 2015). Anestrus and repeated breeding are the two main reasons of infertility in buffaloes, according to clinical examinations. Animals that exhibit continuous cyclicity and more than three or four inseminations after calving, but were unable to conceive, are classified as repeat breeders. Repeat breeding is still an issue for veterinary professionals as well as breeders. Long service periods and intercalving intervals caused by repeat breeding syndrome result in low milk and calf production, which increases the financial losses to the dairy sector.
The Extragalactic Background Light Absorption Feature in the Blazar Component of the Extragalactic Gamma-ray Background
Creators: name: Venters, Tonia M.
name: Pavlidou, Vasiliki
name: Reyes, Luis C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: High-energy photons from cosmological emitters suffer attenuation due to pair production interactions with the extragalactic background light (EBL). The collective emission of any high-energy emitting cosmological population will exhibit an absorption feature at the highest energies. We calculate this absorption feature in the collective emission of blazars for various models of the blazar gamma-ray luminosity function (GLF) and the EBL. We find that models of the blazar GLF that predict higher relative contributions of high-redshift blazars to the blazar collective spectrum result in emission that is more susceptible to attenuation by the EBL, and hence result in more prominent absorption features, allowing for better differentiation amongst EBL models. We thus demonstrate that observations of such an absorption feature will contain information regarding both the blazar GLF and the EBL, and we discuss tests for EBL models and the blazar GLF that will become possible with upcoming Fermi observations.
description: 9 pages, 2 figures, emulateapj format, to be published in Astrophysical Journal
An alternative construction of the positive inner product for pseudo-Hermitian Hamiltonians: Examples
Creators: name: Das, Ashok
name: Greenwood, L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper builds on our earlier proposal for construction of a positive inner product for pseudo-Hermitian Hamiltonians and we give several examples to clarify our method. We show through the example of the harmonic oscillator how our construction applies equally well to Hermitian Hamiltonians which form a subset of pseudo-Hermitian systems. For finite dimensional pseudo-Hermitian matrix Hamiltonians we construct the positive inner product (in the case of $2\times 2$ matrices for both real as well as complex eigenvalues). When the quantum mechanical system cannot be diagonalized exactly, our construction can be carried out perturbatively and we develop the general formalism for such a perturbative calculation systematically (for real eigenvalues). We illustrate how this general formalism works out in practice by calculating the inner product for a couple of ${\cal PT}$ symmetric quantum mechanical theories.
description: 9 pages, revtex
Physical model of continuous two-qubit parity measurement in a cavity-QED network
Creators: name: Kerckhoff, Joseph
name: Bouten, Luc
name: Silberfarb, Andrew
name: Mabuchi, Hideo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose and analyze a physical implementation of two-qubit parity measurements as required for continuous error correction, assuming a setup in which the individual qubits are strongly coupled to separate optical cavities. A single optical probe beam scatters sequentially from the two cavities and the continuous parity measurement is realized via fixed quadrature homodyne photo-detection. We present models based on quantum stochastic differential equations (QSDE's) for both an ideal continuous parity measurement and our proposed cavity quantum electrodynamics (cavity QED) implementation; a recent adiabatic elimination theorem for QSDE's is used to assert strong convergence of the latter to the former in an appropriate limit of physical parameters. Performance of the cavity QED scheme is studied via numerical simulation with experimentally realistic parameters.
description: 4 pages, 3 figures
Covariance estimation in decomposable Gaussian graphical models
Creators: name: Wiesel, Ami
name: Eldar, Yonina C.
name: Hero, Alfred O.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Graphical models are a framework for representing and exploiting prior conditional independence structures within distributions using graphs. In the Gaussian case, these models are directly related to the sparsity of the inverse covariance (concentration) matrix and allow for improved covariance estimation with lower computational complexity. We consider concentration estimation with the mean-squared error (MSE) as the objective, in a special type of model known as decomposable. This model includes, for example, the well known banded structure and other cases encountered in practice. Our first contribution is the derivation and analysis of the minimum variance unbiased estimator (MVUE) in decomposable graphical models. We provide a simple closed form solution to the MVUE and compare it with the classical maximum likelihood estimator (MLE) in terms of performance and complexity. Next, we extend the celebrated Stein's unbiased risk estimate (SURE) to graphical models. Using SURE, we prove that the MSE of the MVUE is always smaller or equal to that of the biased MLE, and that the MVUE itself is dominated by other approaches. In addition, we propose the use of SURE as a constructive mechanism for deriving new covariance estimators. Similarly to the classical MLE, all of our proposed estimators have simple closed form solutions but result in a significant reduction in MSE.
Trend to equilibrium and particle approximation for a weakly selfconsistent Vlasov-Fokker-Planck equation
Creators: name: Bolley, Francois
name: Guillin, Arnaud
name: Malrieu, Florent
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider a Vlasov-Fokker-Planck equation governing the evolution of the density of interacting and diffusive matter in the space of positions and velocities. We use a probabilistic interpretation to obtain convergence towards equilibrium in Wasserstein distance with an explicit exponential rate. We also prove a propagation of chaos property for an associated particle system, and give rates on the approximation of the solution by the particle system. Finally, a transportation inequality for the distribution of the particle system leads to quantitative deviation bounds on the approximation of the equilibrium solution of the equation by an empirical mean of the particles at given time.
Why detect forward muons at a muon collider
Creators: name: Ruhdorfer, Maximilian
name: Salvioni, Ennio
name: Wulzer, Andrea
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We survey the opportunities offered by the detection of the forward muons that accompany the creation of neutral effective vector bosons at a muon collider, in different kinematic regimes. Vectors with relatively low energy produce the Higgs boson and the extended muon angular coverage enables studies of the Higgs properties, such as the measurement of the inclusive production cross section and of the branching ratio to invisible final states. New heavy particles could be produced by vectors of higher energy, through Higgs portal interactions. If the new particles are invisible, the detection of the forward muons is essential in order to search for this scenario. The angular correlations of the forward muons are sensitive to the quantum interference between the vector boson helicity amplitudes and can be exploited for the characterisation of vector boson scattering and fusion processes. This is illustrated by analysing the CP properties of the Higgs coupling to the Z boson. Our findings provide a physics case and a set of benchmarks for the design of a dedicated forward muon detector.
description: 23 pages, 9 figures, 7 tables; v2: one paragraph added in the Introduction, matches version published in PRD
Quenching Star Formation: Can AGN Do the Trick?
Creators: name: Gabor, Jared M.
name: Davé, Romeel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We post-process galaxy star formation histories in cosmological hydrodynamics simulations to test quenching mechanisms associated with AGN. By comparing simulation results to color-magnitude diagrams and luminosity functions of SDSS galaxies, we examine whether "quasar mode" or "radio mode" AGN feedback can yield a realistic red sequence. Both cases yield red sequences distinct from the blue cloud, decent matches to the luminosity function, and galaxies that are too blue by about 0.1 magnitudes in g-r. Our merger-based prescription for quasar mode feedback, however, yields a red sequence build-up inconsistent with observations: the luminosity function lacks a characteristic knee, and the brightest galaxies include a small number of young stars.
description: 4 pages, 1 figure. To appear in proceedings of "The Monster's Fiery Breath: Feedback in Galaxies, Groups, and Clusters," June 2009, Madison, Wisconsin
Improving chiral property of domain-wall fermions by reweighting method
Creators: name: Ishikawa, Tomomi
name: Aoki, Yasumichi
name: Izubuchi, Taku
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The reweighting method is applied to improve the chiral property of domain-wall fermions. One way to achieve this is to enlarge $L_s$, the size of fifth dimension, which controls the size of the induced chiral symmetry breaking. While this is a type of reweighting method for shifting the action parameter, it seems non-trivial since this reweighting means change of the five dimensional lattice volume. In this report, we address issues in this direction of reweighting and evaluate its effectiveness.
description: 7 pages, talk presented at The XXVII International Symposium on Lattice Field Theory, July 26-31 2009, Peking University, Beijing, China
Revisiting Molecular Dissociation in Density Functional Theory: A Simple Model
Creators: name: Tempel, David G.
name: Martinez, Todd J.
name: Maitra, Neepa T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A two-electron one-dimensional model of a heteroatomic molecule composed of two open-shell atoms is considered. Including only two electrons isolates and examines the effect that the highest occupied molecular orbital has on the Kohn-Sham potential as the molecule dissociates. We reproduce the characteristic step and peak that previous high-level wavefunction methods have shown to exist for real molecules in the low-density internuclear region. The simplicity of our model enables us to investigate in detail their development as a function of bond-length, with little computational effort, and derive properties of their features in the dissociation limit. We show that the onset of the step is coincident with the internuclear separation at which an avoided crossing between the ground-state and lowest charge-transfer excited state is approached. Although the step and peak features have little effect on the ground-state energetics, we discuss their important consequences for dynamics and response.
description: 12 pages
Magnetoelectric Cr_2 O_3 and relativity theory
Creators: name: Hehl, Friedrich W.
name: Obukhov, Yuri N.
name: Rivera, Jean-Pierre
name: Schmid, Hans
Publisher: name: arXiv
Year: 2009
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Relativity theory is useful for understanding the phenomenology of the magnetoelectric effect of the antiferromagnet chromium sesquioxide Cr_2 O_3 in two respects: (i) One gets a clear idea about the physical dimensions of the electromagnetic quantities involved, in particular about the dimensions of the magnetoelectric moduli that we suggest to tabulate in future as dimensionless relative quantities; (ii) one can recognize and extract a temperature dependent, 4-dimensional pseudoscalar from the data of magnetoelectric experiments with Cr_2 O_3. This pseudoscalar piece of Cr_2 O_3 is odd under time reflections and parity transformations and is structurally related ("isomorphic") to the gyrator of electric network theory, the axion of particle physics, and the perfect electromagnetic conductor of electrical engineering.
description: 9 pages latex, seminar at the Workshop on Magnetoelectric Interaction Phenomena in Crystals (MEIPIC-6), 25-28 Jan. 2009, Santa Barbara, USA
Simulations of Two-Dimensional Unbiased Polymer Translocation Using the Bond Fluctuation Model
Creators: name: Panja, Debabrata
name: Barkema, Gerard T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the Bond Fluctuation Model (BFM) to study the pore-blockade times of a translocating polymer of length $N$ in two dimensions, in the absence of external forces on the polymer (i.e., unbiased translocation) and hydrodynamic interactions (i.e., the polymer is a Rouse polymer), through a narrow pore. Earlier studies using the BFM concluded that the pore-blockade time scales with polymer length as $τ_d \sim N^β$, with $β=1+2ν$, whereas some recent studies with different polymer models produce results consistent with $β=2+ν$, originally predicted by us. Here $ν$ is the Flory exponent of the polymer; $ν=0.75$ in 2D. In this paper we show that for the BFM if the simulations are extended to longer polymers, the purported scaling $τ_d \sim N^{1+2ν}$ ceases to hold. We characterize the finite-size effects, and study the mobility of individual monomers in the BFM. In particular, we find that in the BFM, in the vicinity of the pore the individual monomeric mobilities are heavily suppressed in the direction perpendicular to the membrane. After a modification of the BFM which counters this suppression (but possibly introduces other artifacts in the dynamics), the apparent exponent $β$ increases significantly. Our conclusion is that BFM simulations do not rule out our theoretical prediction for unbiased translocation, namely $β=2+ν$.
description: minor proofreading corrections, 23 pages (double spacing), 7 figures, published version
title: QUASI STATIC AND FLEXURAL MECHANICAL PROPERTY EVALUATION OF BASALT/FLAX REINFORCED COMPOSITES
Creators: name: Arun Prasath, K.
name: Arumugaprabu, V.
name: Amuthakkannan, P.
name: Naresh, K.
name: Muthugopal, M.S.
name: Jeganathan, M.
name: Pragadeesh, R.
Publisher: name: Peter the Great St. Petersburg Polytechnic University
Year: 2020

description: Basalt fiber is one of the best reinforcing materials and satisfies all the needs of a
composite material. Flax is predominately used natural fiber which has better mechanical and
sudden load shock-absorbing properties. The general-purpose polyester resin in one an
excellent binding agent which equally distributes the load along the direction of applications.
To understand the mechanical properties of the natural and synthetic fiber of these flax/basalt
fiber combinations is essential to reduce the usage of synthetic fibers. In this paper, the
maximum tensile strength was found on the combination of pure 10 layers of basalt and it was
about 185MPa. The maximum flexural strength absorption was seen in the combination of
10 layers of basalt fiber composite about 190MPa. The maximum impact energy was
absorbed by composite D, the alternative layers of basalt and flax fiber composite. SEM
analysis shows with matrix cracking, and fiber twist was seen, this is because of the improper
mixing of the fiber and matrix shows this type of internal failure, the fiber pulls out and blow
holes in between the fiber and matrix also seen in the composites.
On the Implementation of the 0-1 Test for Chaos
Creators: name: Gottwald, Georg A.
name: Melbourne, Ian
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we address practical aspects of the implementation of the 0-1 test for chaos in deterministic systems. In addition, we present a new formulation of the test which significantly increases its sensitivity. The test can be viewed as a method to distill a binary quantity from the power spectrum. The implementation is guided by recent results from the theoretical justification of the test as well as by exploring better statistical methods to determine the binary quantities. We give several examples to illustrate the improvement.
СОДЕРЖАНИЕ ПОНЯТИЯ ПРОФЕССИОНАЛЬНЫХ КАЧЕСТВ
Creators: name: Худжакулов Абдулазиз Хаким угли Старший преподаватель кафедры «Охраны труда и технической безопасности» Каршинского инженерно-экономического института
Publisher: name: Zenodo
Year: 2023

description: В статье анализируется содержание понятия профессиональных качеств студентов инженерных специальностей высших учебных заведений, а также включается представление о том, что профессиональные качества сопровождают человека на протяжении всей его жизни и сочетаются личностные и социальные аспекты профессиональных качеств. В полной мере отражено понятие «психосоциальные качества», проблема совместимости личностного развития и социального контекста профессионального становления отражена также в работах мировых ученых, исследующих профессиональные качества, принцип структуры и системности психических реалий для мировых психологов, исследующих профессиональные качества, генетическая взаимосвязь качеств доказано, что она служит основой исследования формирования уровня самостоятельности, освоения и реализации профессиональной деятельности.
Ключевые слова и фразы: профессиональное качество, профессиональная востребованность, профессиональное развитие, профессиональное мастерство, динамика, личность, становление, личность, карьера, деятельность.
Anacroneuria debilis Pictet
Creators: name: Duarte, Tácio
name: Lecci, Lucas Silveira
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria debilis

description: Anacroneuria debilis (Pictet)
 Perla (Perla) debilis Pictet, 1841: 255, Anacroneuria debilis Zwick, 1972: 1155, Zwick, 1973: 486, Froehlich, 2002: 76, Baldin et al., 2013: 392, Novaes & Bispo, 2014a: 459.
 Material examined. BR, BA: Mucugê, Córrego Boiadeiro, Malaise IV, 11.iv.2015, ED & RC, 1 male; same data, except for: Malaise I, 11.iv.2015, ED & RC, 1 male; BA, Santa Teresinha, Distrito de Pedra Branca, Morro da Pioneira, light pan trap, 07.v.2015, ARC, ED & RC, 2 males; same data, except for: Morro das Torres, light pan trap, 08.viii.2014, ED, LQ & DC, 1 male; same data, except for: Córrego das Torres, light trap, 21.vi.2012, FBQ & RA, 1 male; BA, Elísio Medrado, GAMBA, Córrego Caranguejo, 12°52'14.6''S, 39°28'33.7''W, 24-26.x.2012, light pan trap, AV, VG & RC, 1 male; BA, Varzedo, Sr. Getúlio, Point 1 after the bridge, 07.i.2015, ED, RC, EG & JD, 1 male; same data, except for: Malaise I, 07.ii.2015, ED & RC, 2 males; same data, except for: Malaise II, 07.v.2015, ED & RC, 1 male; same data, except for: Malaise III, 07.ii.2015, ED & RC, 1 male; BA, Piatã, Fazenda Machado, Riacho Machado, Cachoeira Caxibori, 30.vii.2010, 1 male; BA, Vale do Capão, Riachinho (bridge), 12°34'19.2''S, 41°30'52.5''W, 918m, light pan trap, 25.vi.2011, ARC, PC & RB, 1 male; SE, Areia Branca, Parque Nacional Serra da Itabaiana, light pan trap, 04.viii.2009, 1 male; same data, except for: Riacho Água Fria, light pan trap, 05.viii.2009, 1 male.
 Remarks. This species occurs in northeastern Argentina (provinces of Misiones and Entre Ríos), Paraguay, southern and southeastern Brazil (Froehlich, 2002). This is the first record of A. debilis to States of Bahia and Sergipe: Chapada Diamantina (municipalities of Mucugê, Vale do Capão and Piatã) and Serra da Jibóia (municipalities of Elísio Medrado, Santa Teresinha and Varzedo) in BA and Serra da Itabaiana (municipality of Areia Branca) in SE.
description: Published as part of Duarte, Tácio & Lecci, Lucas Silveira, 2016, New species and records of Anacroneuria (Plecoptera: Perlidae) from the northeastern semi-arid region of Brazil in Zootaxa 4079 (2) on pages 293-294, DOI: 10.11646/zootaxa.4079.2.10, http://zenodo.org/record/1050599
Detecting Transits in Sparsely Sampled Surveys
Creators: name: Ford, H. C.
name: Bhatti, W.
name: Hebb, L.
name: Petro, L.
name: Richmond, M.
name: Rogers, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The small sizes of low mass stars in principle provide an opportunity to find Earth-like planets and "super-Earths" in habitable zones via transits. Large area synoptic surveys like Pan-STARRS and LSST will observe large numbers of low mass stars, albeit with widely spaced (sparse) time sampling relative to the planets' periods and transit durations. We present simple analytical equations that can be used to estimate the feasibility of a survey by setting upper limits to the number of transiting planets that will be detected. We use Monte Carlo simulations to find upper limits for the number of transiting planets that may be discovered in the Pan-STARRS Medium Deep and 3-pi surveys. Our search for transiting planets and M-dwarf eclipsing binaries in the SDSS-II supernova data is used to illustrate the problems (and successes) in using sparsely sampled surveys.
description: 7 pages, 2 figures, published in Proceedings of the Conference on Classification and Discovery in Large Astronomical Surveys, 2008
Rhythmogenic neuronal networks, pacemakers, and k-cores
Creators: name: Schwab, David J.
name: Bruinsma, Robijn F.
name: Levine, Alex J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Neuronal networks are controlled by a combination of the dynamics of individual neurons and the connectivity of the network that links them together. We study a minimal model of the preBotzinger complex, a small neuronal network that controls the breathing rhythm of mammals through periodic firing bursts. We show that the properties of a such a randomly connected network of identical excitatory neurons are fundamentally different from those of uniformly connected neuronal networks as described by mean-field theory. We show that (i) the connectivity properties of the networks determines the location of emergent pacemakers that trigger the firing bursts and (ii) that the collective desensitization that terminates the firing bursts is determined again by the network connectivity, through k-core clusters of neurons.
description: 4+ pages, 4 figures, submitted to Phys. Rev. Lett
Anacroneuria bahiensis Righi-Cavallaro & Lecci
Creators: name: Duarte, Tácio
name: Lecci, Lucas Silveira
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria bahiensis

description: Anacroneuria bahiensis Righi-Cavallaro & Lecci
 Anacroneuria bahiensis Righi-Cavallaro & Lecci in Righi-Cavallaro et al., 2013: 3, 5-7.
 Material examined. BR, BA: Lençóis, Mucugezinho, Rio Mucugezinho, 01.vii.2010, light pan trap, ARC, LL, TA, FQ, DF & PC, 1 male; same data, except for: 29.x.2013, light trap, ARC, ED & RC, 7 males; same data, except for: 29.x.2013, light pan trap, ARC, ED & RC, 1 male; BA, Mucugê, Parque Municipal Sempre Viva, Rio Tiburtino, 17.v.2015, light pan trap, ARC et al., 1 male; BA, Andaraí, Igatu, Rio Coisa Boa, 12°53'27.7''S, 41°19'0.0''W, 673m, 13.v.2010, light pan trap, ARC & PC, 1 male; same data, except for: 12°53'33.6''S, 41°19'0''W, 12.v.2010, light trap, DF & RB, 1 male.
 Remarks. The species was described from the municipalities of Lençóis, Amargosa and Barreiras. We add Chapada Diamantina/BA (municipalities of Andaraí and Mucugê).
description: Published as part of Duarte, Tácio & Lecci, Lucas Silveira, 2016, New species and records of Anacroneuria (Plecoptera: Perlidae) from the northeastern semi-arid region of Brazil in Zootaxa 4079 (2) on page 293, DOI: 10.11646/zootaxa.4079.2.10, http://zenodo.org/record/1050599
Mutation of tryptophan residues in the binding site of novel therapeutics for prostate cancer
Creators: name: Setiawan, Josie
Publisher: name: University of British Columbia
Year: 2024

description: Background: Advanced prostate cancer continues to pose a significant health burden due to therapeutic resistance. Although androgen deprivation and antiandrogen therapies directed at the androgen receptor (AR) C-terminal ligand-binding domain (LBD) initially benefit patients, they eventually develop resistance and progress to lethal metastatic castration-resistant prostate cancer. AR N-terminal domain (NTD) inhibitors were developed to overcome resistance mechanisms related to the AR-LBD, such as mutations and splice variants lacking the LBD (AR-V7). While LBD mutations have been well-characterized, the impact of NTD mutations remains unclear. Tryptophan residues W435 and W397 are essential in the binding site for the AR-NTD inhibitor EPI-7386, currently in clinical trials. We hypothesize that tryptophan mutations within the EPI-7386 binding site will alter AR transcriptional activity and reduce the potency of AR-targeting therapeutics. Methods: Site-directed mutagenesis was used to create full-length AR (FL-AR) and AR-V7 expression vectors with point mutations at W435 and W397. FL-AR plasmids were co-transfected into CV-1 or PC-3 cells with an AR-driven luciferase reporter. The mammalian two-hybrid system assay was used to assess the interaction between AR’s NTD and LBD (N/C interaction). AR-V7 expression plasmids were co-transfected into LNCaP cells with an AR-V7 specific reporter. IC50s for a panel of AR inhibitors were generated to assess the impact of tryptophan mutations in FL-AR and AR-V7. Results: Tryptophan mutations in FL-AR led to reporter-specific and cell-specific increases in transcriptional activity in response to androgen, notably W397G, W435L and W435C. In particular, W435L enhanced AR N/C interactions. These mutations reduced the potency of EPI-7386 to inhibit ARR3tk- and PSA-luciferase activities, but not other EPI analogs. In AR-V7, the W397G and W435G mutations impacted the potencies of EPI-7386 and another AR-NTD inhibitor, EPI-7170. Conclusions: Tryptophan residues in the AR-NTD play an important role in FL-AR and AR-V7 transcriptional activities. Key distinctions were revealed between AR inhibitors that suggest distinct mechanisms of drug action. Future work will investigate the recruitment of coregulatory proteins to the NTD region in which W397 and W435 reside. Ultimately, this work provides valuable insight into the development of novel treatment options for the terminal stage of prostate cancer where existing therapies fail.
The Influence of AGN Feedback on Galaxy Cluster Observables
Creators: name: Yang, H. -Y.
name: Ricker, P. M.
name: Sutter, P. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Galaxy clusters are valuable cosmological probes. However, cluster mass estimates rely on observable quantities that are affected by complicated baryonic physics in the intracluster medium (ICM), including feedback from active galactic nuclei (AGN). Cosmological simulations have started to include AGN feedback using subgrid models. In order to make robust predictions, the systematics of different implementations and parametrizations need to be understood. We have developed an AGN subgrid model in FLASH that supports a few different black hole accretion models and feedback models. We use this model to study the effect of AGN on X-ray cluster observables and its dependence on model variations.
description: minor error corrected, to appear in proceedings of the conference "The Monster's Fiery Breath: Feedback in Galaxies, Groups, and Clusters", June 2009, Madison, Wisconsin
Covid-19 e infortuni sul lavoro: l’equiparazione tra causa violenta e causa virulenta nelle malattie professionali ai fini dell’accesso al relativo trattamento economico nella conversione in legge del c.d. d.l. “Cura Italia”
Creators: name: Boccafurni, Eugenio Erario
name: Fatigato, Michele
Publisher: name: Diritto della sicurezza sul lavoro
Year: 2020

description: Nei casi accertati di infezione da Covid-19 in “occasione di lavoro”, l’evento morboso ed il conseguente periodo di quarantena o permanenza domiciliare fiduciaria devono essere trattati come infortunio sul lavoro: si è realizzata, quindi, l’equiparazione tra causa violenta, comune a tutti gli infortuni, e causa virulenta, costituita dall’azione di un evento patogeno infettivo, quale il nuovo Coronavirus. A ciò si aggiunga che la nota INAIL del 17 marzo 2020, espressamente ha riconosciuto un rischio specifico gravante sugli operatori sanitari, pubblici o privati che siano, e su tutte quelle lavorazioni in front office. Ne consegue che, per quest’ultime categorie di lavoratori, opera una presunzione iuris tantum di origine professionale del contagio, con la relativa conseguenza circa la legittima indennizzabilità da parte dell’INAIL. Inoltre, sono oggetto di trattazione le disposizioni INAIL volte a chiarire tutele e presupposti in materia di infortunio “in itinere” e di “riserva di regolarità”. In conclusione, è affrontato il delicato tema della responsabilità datoriale e dell’importanza che ogni datore di lavoro si doti di un complessivo ed adeguato sistema di compliance aziendale, da elaborarsi in collaborazione con le varie figure di riferimento in tema di salute e sicurezza in azienda (RLS e Medico competente). In confirmed cases of Covid-19 infection during work, the morbid event and the consequent quarantine period or fiduciary home permanence, must be treated as accidents at work: has been realized, therefore, the equivalence between violent cause, common to all accidents, and virulent cause. Add to this, the fact that INAIL’s note of 17 March 2020, has explicitly recognized a specific wrong-way risk, wheiging down on public or private medical professionals, and on all front-office employees. It follows that, for these last categories of employees, works an “Iuris tantum” presumption, of contagion’s occupational nature, with the consequence of the legitimate compensation from INAIL. In addition, are subject of discussion, INAIL’s provisions, to make clear protection and assumptions in the field of “injury occurred during the commute” and “reserve of regularity”. In conclusion, is treated the adoption’s importance of a corporate compliance system, to be developed in collaboration between the various reference figures, in the matter of health and safety in the company (Workers’ Safety Representatives and competent Doctor).
description: Diritto della sicurezza sul lavoro, N. 1 (2020)
Rabi Spectroscopy and Excitation Inhomogeneity in a 1D Optical Lattice Clock
Creators: name: Blatt, S.
name: Thomsen, J. W.
name: Campbell, G. K.
name: Ludlow, A. D.
name: Swallows, M. D.
name: Martin, M. J.
name: Boyd, M. M.
name: Ye, Jun
Publisher: name: arXiv
Year: 2009
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the influence of atomic motion on precision Rabi spectroscopy of ultracold fermionic atoms confined in a deep, one dimensional (1D) optical lattice. We analyze the spectral components of longitudinal sideband spectra and present a model to extract information about the transverse motion and sample temperature from their structure. Rabi spectroscopy of the clock transition itself is also influenced by atomic motion in the weakly confined transverse directions of the optical lattice. By deriving Rabi flopping and Rabi lineshapes of the carrier transition, we obtain a model to quantify trap state dependent excitation inhomogeneities. The inhomogeneously excited ultracold fermions become distinguishable, which allows s-wave collisions. We derive a detailed model of this process and explain observed density shift data in terms of a dynamic mean field shift of the clock transition.
description: 11 pages, 8 figures, to appear in Phys. Rev. A. Changes to abstract, text, and figures, new reference
Methamphetamine/amphetamine use and treatment-related outcomes among opioid agonist therapy-seeking adults with prescription-type opioid use disorder : findings from a Canadian treatment trial
Creators: name: Langlois, Jenna Marie
Publisher: name: University of British Columbia
Year: 2024

description: Background: North America is facing an opioid epidemic primarily attributable to potent synthetic opioids. There has been a marked increase in methamphetamine/amphetamine use and related harms among people who use opioids. However, little is known about this population and their treatment-related outcomes. The aim of this thesis was to characterize the population of people with prescription-type opioid use disorder (POUD) who use methamphetamine/amphetamine, and to determine the effects of methamphetamine/amphetamine use and opioid agonist therapy (OAT) on treatment-related outcomes. Methods: Secondary analysis of a pan-Canadian pragmatic trial comparing supervised methadone versus flexible take-home dosing buprenorphine/naloxone models of care among POUD. Multivariable logistic regression analyses were used to determine correlates of baseline methamphetamine/amphetamine use (measured by urine drug test [UDT] and self-report). Cox proportional hazard models were used to evaluate the impact of baseline methamphetamine/amphetamine use on OAT discontinuation. Generalized linear mixed models were used to examine the comparative effectiveness of buprenorphine/naloxone versus methadone on methamphetamine/amphetamine use. Results: Among the 272 randomized participants, 185 (68.0%) were using methamphetamine/amphetamine at baseline. Fentanyl use in the last 30 days (adjusted odds ratio [AOR] = 11.59, 95% confidence interval [CI] = 5.90 – 23.68] was independently and positively associated with baseline methamphetamine/amphetamine use. Among participants that initiated treatment (n = 210), 130 (61.9%) were using methamphetamine/amphetamine at baseline. Baseline methamphetamine/amphetamine use was associated with shorter median times in assigned OAT (36 versus 168 days, adjusted hazard ratio [aHR] = 2.07, CI = 1.22 – 3.49) and any OAT (41 days versus 168 days, aHR = 1.83, CI = 1.05 – 3.17). Neither treatment type nor time in treatment were significantly associated with the odds of methamphetamine/amphetamine use (p > 0.05). Conclusions: In this sample of people with POUD, methamphetamine/amphetamine use was associated with markers of complex and severe OUD, including fentanyl exposure, and increased risk of OAT discontinuation. Methadone and buprenorphine/naloxone did not have an impact on methamphetamine/amphetamine use over the 24-week intervention. These findings suggest the need for targeted interventions, including development of evidence-based treatments for methamphetamine/amphetamine use within specific subgroups, to prevent future overdoses and optimize treatment outcomes in this population.
Effects of short-duration kraaling depend on initial conditions in a mesic grassland - Bomas
Creators: name: Hawkins, Heidi
name: Vetter, Susanne
name: Mgwali, Nompendulo
Publisher: name: University of Cape Town
Year: 2022
Subjects: subject: Botany
subject: 60299 Ecology not elsewhere classified
subject: FOS: Biological sciences
subject: 70101 Agricultural Land Management
subject: FOS: Other agricultural sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Testing efficacy of bomas or kraals for restoration of SOM, nutrients, grass cover in damaged and intact grassland. Two R codes and datasets are supplied:
1. Models_plots.R tests differences in plant and soil characteristics between kraaled and unkraaled areas in Eastern Cape of South Africa in the dataset DataLong.csv.
2. Effect_sizes.R tests the relative efficacy of kraaling relative to controls using the dataset DataPaired.csv

Short-duration overnight kraaling has been suggested as a tool for restoring degraded rangelands. However, the response of different plant functional types and communities to such intense livestock impact may vary depending on local context. We thus examined the effects of short-duration overnight kraaling on soil and vegetation characteristics in a mesic montane grassland in South Africa using paired kraal and control sites, as part of a low intensity grazing approach. Kraaling increased soil P and S, as well as soil organic matter (except when initial values were over 12%). The effect of kraaling on vegetation was strongly dependent on initial condition. Basal cover of grasses and forbs increased by approximately 50 and 15%, respectively, if sites had very low initial basal cover, but decreased cover by up to 15% if initial values were over 50% and 10%, respectively. Kraaling always decreased herbaceous biomass, but especially when initial values were over 2 000 kg ha−1. In mesic grasslands, short-duration overnight kraaling is promising as a tool for rehabilitating degraded sites or fertilizing abandoned cropland, but should be avoided where the grass sward is intact. We recommend that the suitability of kraaling be evaluated per vegetation type and local context.