cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Copper and zinc adsorption from bacterial biomass - possibility of low-cost industrial wastewater treatment
Creators: name: Alves, Diego Armando Santos
name: Junior, Amilton Barbosa Botelho
name: Espinosa, Denise Crocce Romano
name: Baltazar, Marcela dos Passos Galluzzi
name: Tenório, Jorge Alberto Soares
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: The increasing interest of all stakeholders to achieve environmental protection with socioeconomic development puts pressure on industrial processes for less negative impact on the environment. The use of biomass for wastewater treatment has increased due to its low costs and technical feasibility. The present study aimed the use of biomass from a waste of known polluted area for the adsorption of Zn and Cu in a fixed-bed reactor. Samples were collected in Cubatão (Brazil) and cultivated in LB medium. Resulting cultivable bacterial communities were identified as Enterococcus faecalis and Pseudomonas aeruginosa. Adsorption experiments were performed varying the metallic ion concentration and the amount of biomass. Adsorption experiments showed efficiency rates up to 90%. As the concentration of metallic ions increased, the adsorption efficiency decreased, indicating that the active sites were saturated. Activated charcoal demonstrated lower adsorption rates than biomass. Elution process showed that HNO3 had better efficiency than HCl. Zn adsorption fitted better for Lineweaver-Burk model (Qmax = 200mg/g of biomass), while Cu adsorption fitted better for Langmuir model (Qmax = 164mg/g of biomass). Results here demonstrated that the adsorption of Zn and Cu simulating an industrial wastewater by the biomass from a contaminated area is technically feasible.
Optimal conditions for the numerical calculation of the largest Lyapunov exponent for systems of ordinary differential equations
Creators: name: Dubeibe, F. L.
name: Bermudez-Almanza, L. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A general indicator of the presence of chaos in a dynamical system is the largest Lyapunov exponent. This quantity provides a measure of the mean exponential rate of divergence of nearby orbits. In this paper, we show that the so-called two-particle method introduced by Benettin et al. could lead to spurious estimations of the largest Lyapunov exponent. As a comparator method, the maximum Lyapunov exponent is computed from the solution of the variational equations of the system. We show that the incorrect estimation of the largest Lyapunov exponent is based on the setting of the renormalization time and the initial distance between trajectories. Unlike previously published works, we here present three criteria that could help to determine correctly these parameters so that the maximum Lyapunov exponent is close to the expected value. The results have been tested with four well known dynamical systems: Ueda, Duffing, Rössler and Lorenz.
description: 12 pages, 8 figures. Accepted in the International Journal of Modern Physics C
Bimodal conductance distribution of Kitaev edge modes in topological superconductors
Creators: name: Diez, M.
name: Fulga, I. C.
name: Pikulin, D. I.
name: Tworzydlo, J.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A two-dimensional superconductor with spin-triplet p-wave pairing supports chiral or helical Majorana edge modes with a quantized (length $L$-independent) thermal conductance. Sufficiently strong anisotropy removes both chirality and helicity, doubling the conductance in the clean system and imposing a super-Ohmic $1/\sqrt{L}$ decay in the presence of disorder. We explain the absence of localization in the framework of the Kitaev Hamiltonian, contrasting the edge modes of the two-dimensional system with the one-dimensional Kitaev chain. While the disordered Kitaev chain has a log-normal conductance distribution peaked at an exponentially small value, the Kitaev edge has a bimodal distribution with a second peak near the conductance quantum. Shot noise provides an alternative, purely electrical method of detection of these charge-neutral edge modes.
description: 11 pages, 13 figures
The Flux of Kilogram-Sized Meteoroids from Lunar Impact Monitoring
Creators: name: Suggs, Robert
name: Moser, Danielle
name: Cooke, William
name: Suggs, Ronnie
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The flashes from meteoroid impacts on the Moon are useful in determining the flux of impactors with masses as low as a few tens of grams. A routine monitoring program at NASA's Marshall Space Flight Center has recorded over 300 impacts since 2006. A selection of 126 flashes recorded during periods of photometric skies was analyzed, creating the largest and most homogeneous dataset of lunar impact flashes to date. Standard CCD photometric techniques were applied to the video and the luminous energy, kinetic energy, and mass are estimated for each impactor. Shower associations were determined for most of the impactors and a range of luminous efficiencies was considered. The flux to a limiting energy of 2.5E-6 kT TNT or 1.05E7 J is 1.03E-7 km-2 hr-1 and the flux to a limiting mass of 30 g is 6.14E-10 m-2 yr-1 at the Moon. Comparisons made with measurements and models of the meteoroid population indicate that the flux of objects in this size range is slightly lower (but within error bars) than flux at this size from the near Earth object and fireball population by Brown et al. 2002. Size estimates for the crater detected by Lunar Reconnaissance Orbiter from a large impact observed on March 17, 2013 are also briefly discussed.
description: Accepted by Icarus 19 April 2014. 28 pages, 16 figures, 4 tables
Conductance fingerprint of Majorana fermions in the topological Kondo effect
Creators: name: Galpin, Martin R.
name: Mitchell, Andrew K.
name: Temaismithi, Jesada
name: Logan, David E.
name: Béri, Benjamin
name: Cooper, Nigel R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider an interacting nanowire/superconductor heterostructure attached to metallic leads. The device is described by an unusual low-energy model involving spin-1 conduction electrons coupled to a nonlocal spin-1/2 Kondo impurity built from Majorana fermions. The topological origin of the resulting Kondo effect is manifest in distinctive non-Fermi-liquid (NFL) behavior, and the existence of Majorana fermions in the device is demonstrated unambiguously by distinctive conductance lineshapes. We study the physics of the model in detail, using the numerical renormalization group, perturbative scaling and abelian bosonization. In particular, we calculate the full scaling curves for the differential conductance in AC and DC fields, onto which experimental data should collapse. Scattering t-matrices and thermodynamic quantities are also calculated, recovering asymptotes from conformal field theory. We show that the NFL physics is robust to asymmetric Majorana-lead couplings, and here we uncover a duality between strong and weak coupling. The NFL behavior is understood physically in terms of competing Kondo effects. The resulting frustration is relieved by inter-Majorana coupling which generates a second crossover to a regular Fermi liquid.
description: 17 pages, 8 figures
Hub-activated signal transmission in complex networks
Creators: name: Jahnke, Sven
name: Memmesheimer, Raoul-Martin
name: Timme, Marc
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A wide range of networked systems exhibit highly connected nodes (hubs) as prominent structural elements. The functional roles of hubs in the collective nonlinear dynamics of many such networks, however, are not well understood. Here we propose that hubs in neural circuits may activate local signal transmission along sequences of specific subnetworks. Intriguingly, in contrast to previous suggestions of the functional roles of hubs, here not the hubs themselves, but non-hub subnetworks transfer the signals. The core mechanism relies on hubs and non-hubs providing activating feedback to each other. It may thus induce the propagation of specific pulse and rate signals in neuronal and other communication networks.
Bayesian likelihood-free localisation of a biochemical source using multiple dispersion models
Creators: name: Ristic, Branko
name: Gunatilaka, Ajith
name: Gailis, Ralph
name: Skvortsov, Alex
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Localisation of a source of a toxic release of biochemical aerosols in the atmosphere is a problem of great importance for public safety. Two main practical difficulties are encountered in this problem: the lack of knowledge of the likelihood function of measurements collected by biochemical sensors, and the plethora of candidate dispersion models, developed under various assumptions (e.g. meteorological conditions, terrain). Aiming to overcome these two difficulties, the paper proposes a likelihood-free approximate Bayesian computation method, which simultaneously uses a set of candidate dispersion models, to localise the source. This estimation framework is implemented via the Monte Carlo method and tested using two experimental datasets.
description: 23 pages, 7 figures
Examples of toric manifolds which are not quasitoric manifolds
Creators: name: Suyama, Yusuke
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52B05, 14M25, 57S15

description: We construct toric manifolds of complex dimension $\geq 4$, whose orbit spaces by the action of the compact torus are not homeomorphic to simple polytopes (as manifolds with corners). These provide the first known examples of toric manifolds which are not quasitoric manifolds.
description: 9 pages, 12 figures
Benar menulis artikel ilmiah
Creators: name: Multazam, Mochammad Tanzil
Publisher: name: Zenodo
Year: 2020
Subjects: artikel ilmiah
umsida
Universitas Muhammadiyah Sidoarjo
Publikasi Ilmiah

description: Materi ini disampaikan pada workshop series Peningkatan Kemampuan Mahasiswa dalam Menulis Karya Ilmiah
Nachrufe (von Huene, Irmscher, Junghans, Kapff, Kühn, Mayer, Morstatt, Reich, Seibold)
Creators: name: Seilacher, Adolf
name: Westphal, Frank
name: Schuez, Ernst
name: Hauff, Rudolf
name: Harde, Karl Wilhelm
Publisher: name: unkn
Year: 2020

description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
description: Bd. 124, 1969
РОЛЬ И ЗНАЧЕНИЕ СОВРЕМЕННЫХ ПЕДАГОГИЧЕСКИХ МЕТОДОВ В ПРЕПОДАВАНИИ ЭКОНОМЕТРИЧЕСКИХ НАУК
Creators: name: Улашева, Шахло
Publisher: name: Zenodo
Year: 2023

description: Предстaвленo oписaние метoдa, пoзвoляющегo сoвершенствoвaть сoдержaние дисциплин мaтемaтическoгo циклa, рaзделяя их нa инвaриaнтную (oбщую) и вaриaтивную чaсти. Привoдятся результaты выделения инвaриaнтoв для дисциплин «Линейнaя aлгебрa», «Мaтемaтический aнaлиз», «Теoрия верoятнoстей и мaтемaтическaя стaтистикa», препoдaвaемых экoнoмистaм-бaкaлaврaм нескoльких вузoв. Нa oснoве выделенных инвaриaнтoв предлaгaются темы для oргaнизaции сaмoстoятельнoй прoектнoй и исследoвaтельскoй деятельнoсти студентoв, oриентирoвaннoй нa сoдержaние курсa «Экoнoметрикa».
OJS UMSIDA
Creators: name: Wardana, Mahardika Darmawan Kusuma
Publisher: name: Zenodo
Year: 2020
Subjects: artikel ilmiah
ojs
umsida
Universitas Muhammadiyah SIdoarjo

description: Materi ini dipresentasikan pada Workshop Peningkatan Kemampuan Mahasiswa dalam Menulis Artikel Ilmiah
Role of vibrational entropy in the stabilization of the high-temperature phases of iron
Creators: name: Neuhaus, Jürgen
name: Leitner, Michael
name: Nicolaus, Karl
name: Petry, Winfried
name: Hennion, Bernard
name: Hiess, Arno
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The phonon dispersions of the bcc and fcc phases of pure iron (α-Fe, γ-Fe and δ-Fe) at ambient pressure were investigated close to the respective phase transition temperatures. In the open bcc structure the transverse phonons along T1 [ξξ0] and T1 [ξξ2ξ] are of particularly low energy. The eigenvectors of these phonons correspond to displacements needed for the transformation to the fcc γ-phase. Especially these phonons, but also all other phonons soften considerably with increasing temperature. Comparing thermodynamic properties of the fcc and the two bcc phases it is shown that the high temperature bcc phase is stabilized predominantly by vibrational entropy, whereas for the stabilization of the fcc phase electronic entropy provides an equal contribution.
description: to appear in Physical Review B
Imaging ultrafast electronic motion by x-ray scattering
Creators: name: Dixit, Gopal
name: Santra, Robin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Time-resolved ultrafast x-ray scattering is an emerging approach to probe the temporally evolving electronic charge distribution in real-space and in real-time. In this contribution, time-resolved ultrafast x-ray scattering from an electronic wave packet is presented. It is shown that the spatial and temporal correlations are imprinted in the scattering patterns, obtained by ultrafast x-ray scattering from an electronic wave packet, which deviate drastically from the notion that the instantaneous electronic density is the key quantity being probed. Furthermore, a detailed analysis of ultrafast x-ray scattering from a sample containing a mixture of non-stationary and stationary electrons along with the role of scattering interference between a non-stationary and several stationary electrons to the total scattering signal is discussed.
description: 7 pages, 3 figures, to be publish as ICPEAC 2013 conference proceeding
Metodika aplikace GDPR na výzkumná data v prostředí vysokých škol v ČR
Creators: name: Polčák, Radim
name: Ševčík, Leoš
name: Koščík, Michal
name: Klodwig, Jakub
name: Holub, Petr
Publisher: name: Zenodo
Year: 2018
Subjects: ROZV/C11/2018
GDPR
výzkumná data
scientific data

description: Obecné nařízení o ochraně osobních údajů klade na vysoké školy a veřejné výzkumné instituce značné nároky po materiální i organizační stránce. Publikace je zaměřena na ochranu soukromí a osobních údajů

v oblasti výzkumu. Hlavním účelem této publikace je poskytnout metodickou podporu pro výzkumné organizace, etické komise i jednotlivé výzkumníky.

Publikace záměrně nepokrývá ochranu osobních údajů v oblastech vysokých škol, jakými jsou kupříkladu studijní či personální agenda, a to z důvodu snahy o co nejpřehledněji zpracovaný, úzce zaměřený text. Zpracování osobních dat pro vědecké účely je poměrně specifickou problematikou, které se i v rámci GDPR dostává zvláštního zřetele. Publikace identifikuje ustanovení obecného nařízení (GDPR), která jsou relevantní pro oblast výzkumu a podává jejich koncentrovaný výklad ve vztahu k výzkumným činnostem. Díky prvním dvěma kapitolám je publikace přístupná i pro osoby, které doposud nejsou obeznámeny s regulací v oblasti ochrany osobních údajů. Pro čtenáře s pokročilou znalostí je určen zejména výklad následujících kapitol. Snahou autorského je poskytnout metodickou podporu zejména vedoucím výzkumných týmů, při plánování a realizaci výzkumných projektů a navazujících procesech správy výzkumných dat.

Tato příručka vznikla v rámci Centrální rozvojového projektu VŠ zaměřujícího se na podporu konzistentní implementace GDPR v prostředí českých veřejných vysokých škol a klade si za cíl poskytnout vodítka

pro korektní implementaci GDPR s maximálním využitím výjimek a možností, které jsou pro vědecké účely a akademický projev k dispozici.

Text odráží právní stav k 31.12.2018.
A superconducting-nanowire 3-terminal electronic device
Creators: name: McCaughan, Adam N.
name: Berggren, Karl K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In existing superconducting electronic systems, Josephson junctions play a central role in processing and transmitting small-amplitude electrical signals. However, Josephson-junction-based devices have a number of limitations including: (1) sensitivity to magnetic fields, (2) limited gain, (3) inability to drive large impedances, and (4) difficulty in controlling the junction critical current (which depends sensitively on sub-Angstrom-scale thickness variation of the tunneling barrier). Here we present a nanowire-based superconducting electronic device, which we call the nanocryotron (nTron), that does not rely on Josephson junctions and can be patterned from a single thin film of superconducting material with conventional electron-beam lithography. The nTron is a 3-terminal, T-shaped planar device with a gain of ~20 that is capable of driving impedances of more than 100 kΩ, and operates in typical ambient magnetic fields at temperatures of 4.2K. The device uses a localized, Joule-heated hotspot formed in the gate to modulate current flow in a perpendicular superconducting channel. We have characterized the nTron, matched it to a theoretical framework, and applied it both as a digital logic element in a half-adder circuit, and as a digital amplifier for superconducting nanowire single-photon detectors pulses. The nTron has immediate applications in classical and quantum communications, photon sensing and astronomy, and its performance characteristics make it compatible with existing superconducting technologies. Furthermore, because the hotspot effect occurs in all known superconductors, we expect the design to be extensible to other materials, providing a path to digital logic, switching, and amplification in high-temperature superconductors.
Integration algorithms of elastoplasticity for ceramic powder compaction
Creators: name: Penasa, M.
name: Piccolroaz, A.
name: Argani, L.
name: Bigoni, D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Inelastic deformation of ceramic powders (and of a broad class of rock-like and granular materials), can be described with the yield function proposed by Bigoni and Piccolroaz (2004, Yield criteria for quasibrittle and frictional materials. Int. J. Solids and Structures, 41, 2855-2878). This yield function is not defined outside the yield locus, so that 'gradient-based' integration algorithms of elastoplasticity cannot be directly employed. Therefore, we propose two ad hoc algorithms: (i.) an explicit integration scheme based on a forward Euler technique with a 'centre-of-mass' return correction and (ii.) an implicit integration scheme based on a 'cutoff-substepping' return algorithm. Iso-error maps and comparisons of the results provided by the two algorithms with two exact solutions (the compaction of a ceramic powder against a rigid spherical cup and the expansion of a thick spherical shell made up of a green body), show that both the proposed algorithms perform correctly and accurately.
description: 21 pages. Journal of the European Ceramic Society, 2014
The Trace of the CNO Cycle in the Ring Nebula NGC6888
Creators: name: Mesa-Delgado, A.
name: Esteban, C.
name: García-Rojas, J.
name: Reyes-Pérez, J.
name: Morisset, C.
name: Bresolin, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new results on the chemical composition of the Galactic ring nebula NGC6888 surrounding the WN6(h) star WR136. The data are based on deep spectroscopical observations taken with the High Dispersion Spectrograph at the 8.2m Subaru Telescope. The spectra cover the optical range from 3700 to 7400 A. The effect of the CNO cycle is well identified in the abundances of He, N, and O, while elements not involved in the synthesis such as Ar, S, and Fe present values consistent with the solar vicinity and the ambient gas. The major achievement of this work is the first detection of the faint CII 4267 recombination line in a Wolf-Rayet nebula. This allows to estimate the C abundance in NGC6888 and therefore investigate for the first time the trace of the CNO cycle in a ring nebula around a Wolf-Rayet star. Although the detection of the CII line has a low signal-to-noise ratio, the C abundance seems to be higher than the predictions of recent stellar evolution models of massive stars. The Ne abundance also show a puzzling pattern with an abundance of about 0.5 dex lower than the solar vicinity, which may be related to the action of the NeNa cycle. Attending to the constraints imposed by the dynamical timescale and the He/H and N/O ratios of the nebula, the comparison with stellar evolution models indicates that the initial mass of the stellar progenitor of NGC6888 is between 25 Msun and 40 Msun.
description: 14 pages, 5 figures. Accepted for publication in The Astrophysical Journal
Discrete-Gauss states and the generation of focussing dark beams
Creators: name: Ferrando, Albert
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Discrete-Gauss states are a new class of gaussian solutions of the free Schrödinger equation owning discrete rotational symmetry. They are obtained by acting with a discrete deformation operator onto Laguerre-Gauss modes. We present a general analytical construction of these states and show the necessary and sufficient condition for them to host embedded dark beams structures. We unveil the intimate connection between discrete rotational symmetry, orbital angular momentum, and the generation of focussing dark beams. The distinguishing features of focussing dark beams are discussed. The potential applications of Discrete-Gauss states in advanced optical trapping and quantum information processing are also briefly discussed.
description: 11 pages, 4 figures
Hard X-ray emission and $^{44}$Ti line features of Tycho Supernova Remnant
Creators: name: Wang, Wei
name: Li, Zhuo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A deep hard X-ray survey of the INTEGRAL satellite first detected the non-thermal emission up to 90 keV in the Tycho supernova (SN) remnant. Its 3 -- 100 keV spectrum is fitted with a thermal bremsstrahlung of $kT\sim 0.81\pm 0.45$ keV plus a power-law model of $Γ\sim 3.01\pm 0.16$. Based on the diffusive shock acceleration theory, this non-thermal emission, together with radio measurements, implies that Tycho remnant may not accelerate protons up to $>$PeV but hundreds TeV. Only heavier nuclei may be accelerated to the cosmic ray spectral "knee". In addition, we search for soft gamma-ray lines at 67.9 and 78.4 keV coming from the decay of radioactive $^{44}$Ti in Tycho remnant by INTEGRAL. A bump feature in the 60-90 keV energy band, potentially associated with the $^{44}$Ti line emission, is found with a marginal significance level of $\sim$ 2.6 $σ$. The corresponding 3 $σ$ upper limit on the $^{44}$Ti line flux amounts to 1.5 $\times$ 10$^{-5}$ ph cm$^{-2}$ s$^{-1}$. Implications on the progenitor of Tycho SN, considered to be the prototype of type Ia SN, are discussed.
description: 15 pages, 4 figures, accepted for publication in ApJ
Scientific Verification of the High Altitude Water Cherenkov observatory
Creators: name: Marinelli, Antonio
name: Sparks, Kathryne
name: Alfaro, Ruben
name: González, María Magdalena
name: Patricelli, Barbara
name: Fraija, Nissim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The High Altitude Water Cherenkov (HAWC) observatory is a TeV gamma-ray and cosmic-ray detector currently under construction at an altitude of 4100 m close to volcano Sierra Negra in the state of Puebla, Mexico. The HAWC observatory is an extensive air-shower array comprised of 300 optically-isolated water Cherenkov detectors (WCDs). Each WCD contains $\sim$200,000 liters of filtered water and four upward-facing photomultiplier tubes. In Fall 2014, when the HAWC observatory will reach an area of 22,000 m$^{2}$, the sensitivity will be 15 times higher than its predecessor Milagro. Since September 2012, more than 30 WCDs have been instrumented and taking data. This first commissioning phase has been crucial for the verification of the data acquisition and event reconstruction algorithms. Moreover, with the increasing number of instrumented WCDs, it is important to verify the data taken with different configuration geometries. In this work we present a comparison between Monte Carlo simulation and data recorded by the experiment during 24 hours of live time between 14 and 15 April of 2013 when 29 WCDs were active.
description: 4 pages, 6 figures, RICAP13 Conference Proceeding
Time-dependent R-matrix theory applied to two-photon double ionization of He
Creators: name: van der Hart, H. W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We introduce a time-dependent R-matrix theory generalised to describe double ionization processes. The method is used to investigate two-photon double ionization of He by intense XUV laser radiation. We combine a detailed B-spline-based wavefunction description in a extended inner region with a single-electron outer region containing channels representing both single ionization and double ionization. A comparison of wavefunction densities for different box sizes demonstrates that the flow between the two regions is described with excellent accuracy. The obtained two-photon double ionization cross sections are in excellent agreement with other cross sections available. Compared to calculations fully contained within a finite inner region, the present calculations can be propagated over the time it takes the slowest electron to reach the boundary.
description: 6 pages, 4 figures
Simulations of magnetic nanoparticle Brownian motion
Creators: name: Reeves, Daniel B
name: Weaver, John B
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Magnetic nanoparticles are useful in many medical applications because they interact with biology on a cellular level thus allowing microenvironmental investigation. An enhanced understanding of the dynamics of magnetic particles may lead to advances in imaging directly in magnetic particle imaging (MPI) or through enhanced MRI contrast and is essential for nanoparticle sensing as in magnetic spectroscopy of Brownian motion (MSB). Moreover, therapeutic techniques like hyperthermia require information about particle dynamics for effective, safe, and reliable use in the clinic. To that end, we have developed and validated a stochastic dynamical model of rotating Brownian nanoparticles from a Langevin equation approach. With no field, the relaxation time toward equilibrium matches Einstein's model of Brownian motion. In a static field, the equilibrium magnetization agrees with the Langevin function. For high frequency or low amplitude driving fields, behavior characteristic of the linearized Debye approximation is reproduced. In a higher field regime where magnetic saturation occurs, the magnetization and its harmonics compare well with the effective field model. On another level, the model has been benchmarked against experimental results, successfully demonstrating that harmonics of the magnetization carry enough information to infer environmental parameters like viscosity and temperature.
description: 6 pages 6 figures
Top Yukawa coupling measurement with indefinite CP Higgs in $e^+e^-\to t\bar{t}Φ$
Creators: name: Ananthanarayan, B.
name: Garg, Sumit K.
name: Kim, C. S.
name: Lahiri, Jayita
name: Poulose, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the issue of the top quark Yukawa coupling measurement in a model in dependent and general case with the inclusion of CP-violation in the coupling. Arguably the best process to study this coupling is the associa ted production of Higgs boson along with a $t\bar t$ pair in a machine like the International Linear Collider (ILC). While detailed analyses of the sensitivity of the measurement assuming a Standard Model (SM) - like coupling are available in the context of ILC, conclude that th e coupling could be pinned down at about 10\% level with modest luminosity, our investigations show that the scenario could be different in case of a more general coupling. The modified Lorentz structure resulting in a changed functional dependence of the cross section on the couplin g, along with the difference in the cross section itself leads to considerable deviation in the sensitivity. Our studies with an ILC of center of mass energies of 500 GeV, 800 GeV and 1000 GeV show that moderate CP-mixing in the Higgs sector could change the sensitivity to about 20\ %, while it could be worsened to 75\% in cases which could accommodate more dramatic changes in the coupling. While detailed considerations of the decay distributions point to a need for a relook at the analysis strategy followed for the case of SM such as for a model independent analysis of the top quark Yukawa coupling measurement. This study strongly suggests that, a joint analysis of the CP properties and the Yukawa coupling measurement would be the way forward at the ILC and that caution must be excercised in the measurem ent of the Yukawa couplings and the conclusions drawn from it.
description: 18 pages, 7 figures, uses revtex
Testing hypotheses about the role of wildfire in structuring avian communities
Creators: name: Bulluck, Lesley
Publisher: name: QUBES Educational Resources
Year: 2019

description: This module assesses the role of wildfire in the eastern US and its impact on bird communities using NEON bird survey data from pre- and post- a major wildfire in the Great Smoky Mountains National Park (GRSM) in November 2016.
A Rare Encounter with Very Massive Stars in NGC 3125-A1
Creators: name: Wofford, Aida
name: Leitherer, Claus
name: Chandar, Rupali
name: Bouret, Jean-Claude
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Super star cluster A1 in the nearby starburst galaxy NGC 3125 is characterized by broad He\ii \lam1640 emission (full width at half maximum, $FWHM\sim1200$ km s$^{-1}$) of unprecedented strength (equivalent width, $EW=7.1\pm0.4$ Å). Previous attempts to characterize the massive star content in NGC 3125-A1 were hampered by the low resolution of the UV spectrum and the lack of co-spatial panchromatic data. We obtained far-UV to near-IR spectroscopy of the two principal emitting regions in the galaxy with the Space Telescope Imaging Spectrograph (STIS) and the Cosmic Origins Spectrograph (COS) onboard the Hubble Space Telescope (\hst). We use these data to study three clusters in the galaxy, A1, B1, and B2. We derive cluster ages of 3-4 Myr, intrinsic reddenings of $E(B-V)=0.13$, 0.15, and 0.13, and cluster masses of $1.7\times10^5$, $1.4\times10^5$, and $1.1\times10^5$ M$_\odot$, respectively. A1 and B2 show O\vb \lam1371 absorption from massive stars, which is rarely seen in star-forming galaxies, and have Wolf-Rayet (WR) to O star ratios of $N(WN5-6)/N(O)=0.23$ and 0.10, respectively. The high $N(WN5-6)/N(O)$ ratio of A1 cannot be reproduced by models that use a normal IMF and generic WR star line luminosities. We rule out that the extraordinary He\ii \lam1640 emission and O\vb \lam1371 absorption of A1 are due to an extremely flat upper IMF exponent, and suggest that they originate in the winds of very massive ($>120\,M_\odot$) stars. In order to reproduce the properties of peculiar clusters such as A1, the present grid of stellar evolution tracks implemented in Starburst99 needs to be extended to masses $>120\,M_\odot$.
description: Accepted for publication in ApJ. 34 pages, 12 figures
Determination of Strange Sea Quark Distributions from Fixed-target and Collider Data
Creators: name: Alekhin, S.
name: Bluemlein, J.
name: Caminadac, L.
name: Lipka, K.
name: Lohwasser, K.
name: Moch, S.
name: Petti, R.
name: Placakyte, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present an improved determination of the strange sea distribution in the nucleon with constraints coming from the recent charm production data in neutrino-nucleon deep-inelastic scattering by the NOMAD and CHORUS experiments and from charged current inclusive deep-inelastic scattering at HERA. We demonstrate that the results are consistent with the data from the ATLAS and the CMS experiments on the associated production of $W^\pm$-bosons with $c$-quarks. We also discuss issues related to the recent strange sea determination by the ATLAS experiment using LHC collider data.
description: 23 pages, 14 figures
Charles Michie Smith - founder of the Kodaikanal (Solar Physics) Observatory and beginnings of physical astronomy in India
Creators: name: Rao, N. Kameswara
name: Vagiswari, A.
name: Birdie, Christina
Publisher: name: arXiv
Year: 2014
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: It has been about 115 years since the establishment of Kodaikanal Observatory as an extension of the original Madras Observatory, which has evolved into the present Indian Institute of Astrophysics at Bangalore. It is also the first mountain observatory in India. Charles Michie Smith was the man who selected the site, established the observatory and directed it for the first 12 years. He was also the man who recruited John Evershed, discoverer of the famous Evershed effect and established Kodaikanal Observatory as a major centre for solar physics. Michie Smith, the person and the establishment of Kodaikanal Observatory are discussed here in the context of the early studies in physical astronomy (observational astrophysics) in India.
description: 21 pages, 21 figures, historical notes. arXiv admin note: text overlap with arXiv:0906.0144 by other authors
Neuromorphic electronic circuits for building autonomous cognitive systems
Creators: name: Chicca, Elisabetta
name: Stefanini, Fabio
name: Bartolozzi, Chiara
name: Indiveri, Giacomo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Emerging Technologies (cs.ET)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: A.1; B.7.1; C.1.3; I.2.6; I.5.5

description: Several analog and digital brain-inspired electronic systems have been recently proposed as dedicated solutions for fast simulations of spiking neural networks. While these architectures are useful for exploring the computational properties of large-scale models of the nervous system, the challenge of building low-power compact physical artifacts that can behave intelligently in the real-world and exhibit cognitive abilities still remains open. In this paper we propose a set of neuromorphic engineering solutions to address this challenge. In particular, we review neuromorphic circuits for emulating neural and synaptic dynamics in real-time and discuss the role of biophysically realistic temporal dynamics in hardware neural processing architectures; we review the challenges of realizing spike-based plasticity mechanisms in real physical systems and present examples of analog electronic circuits that implement them; we describe the computational properties of recurrent neural networks and show how neuromorphic Winner-Take-All circuits can implement working-memory and decision-making mechanisms. We validate the neuromorphic approach proposed with experimental results obtained from our own circuits and systems, and argue how the circuits and networks presented in this work represent a useful set of components for efficiently and elegantly implementing neuromorphic cognition.
description: Submitted to Proceedings of IEEE, spiking neural network implementations in full custom VLSI
Una población vulnerable de Hetaerina vulnerata (Odonata: Calopterygidae) en la zona urbana de la Ciudad de México.
Creators: name: Guzmán-Ojeda, Rocío J.
name: González-Soriano, Enrique
Publisher: name: Zenodo
Year: 2019
Subjects: Population ecology
Dispersion patterns
Insecta
Damselfly
Aquatic insects

description: En la Ciudad de México, se han reportado 43 especies de libélulas de 27 géneros y siete familias, lo cual representa el 12% de las especies estimadas para el país. Una de estas especies es Hetaerina vulnerata (Odonata: Calopterygidae), la cual, a pesar de tener una distribución amplia en el territorio nacional, se pensaba extirpada de la “plancha” urbana localizada en el valle de la Ciudad de México, debido a la desaparición o contaminación de los cuerpos de agua requeridos por esta especie. Recientemente se descubrió una población pequeña y aislada de dicha especie en el Parque Nacional Fuentes Brotantes de Tlalpan, en la Delegación Tlalpan al sur de la Ciudad de México. Para evaluar la condición de dicha población se realizó un muestreo de septiembre a noviembre de 2017 utilizando redes aéreas para capturar individuos adultos a lo largo de 186 m del arroyo del parque. Se capturaron 68 individuos adultos, 64 machos y 4 hembras.  Las capturas iniciaron a las 11:00 h, lo cual coincide con la radiación promedio más alta (774 watts/m2) registrada en la estación meteorológica más cercana, y únicamente se registraron 5 eventos de apareamiento. El patrón de dispersión, según el índice de Morisita, fue agregado (Iδ = 3.08; F0 < F138∞(0.05)). La altura de las perchas utilizadas por la especie varió entre 0 y 230 cm, con una mediana de 10 cm, encontrándose el 50% de los datos entre los 0 y 45 cm de altura. Las principales perchas utilizadas fueron rocas contiguas a la corriente y cuatro especies de plantas: Apium nodiflorum, Persicaria punctata, Xanthosoma robustum y Typha latifolia. Estos resultados indican la gran importancia de la cobertura vegetal para la utilización de perchas por parte de H. vulnerata, incluso siendo especies exóticas. Estos resultados preliminares serán utilizados para analizar la dinámica poblacional de H. vulnerata en el área y la longevidad del adulto.
"We Mexicas went everywhere in that land" : the Mexican Indian diaspora in the Greater Southwest, 1540-1680
Creators: name: Jeffres, Travis
Publisher: name: No Publisher Supplied
Year: 2018

description: Beginning with Hernando Cortés’s capture of Aztec Tenochtitlan in 1521, legions of “Indian conquistadors” from Mexico joined Spanish military campaigns throughout Mesoamerica in the sixteenth century. Scholarship appearing in the last decade has revealed the awesome scope of this participation—involving hundreds of thousands of Indian allies—and cast critical light on their motivations and experiences. Nevertheless this work has remained restricted to central Mexico and areas south, while the region known as the Greater Southwest, encompassing northern Mexico and the U.S. Southwest, has been largely ignored. This dissertation traces the movements of Indians from central Mexico, especially Nahuas, into this region during the sixteenth and seventeenth centuries and charts their experiences as diasporic peoples under colonialism using sources they wrote in their own language (Nahuatl). Their activities as laborers, soldiers, settlers, and agents of acculturation largely enabled colonial expansion in the region. However their exploits are too frequently cast as contributions to an overarching Spanish colonial project. This dissertation seeks to uncover underlying indigenous agendas and reveal what colonial service meant for native participants. Nahuatl sources demonstrate that activities typically portrayed as contributions to Spanish colonial causes reflected indigenous attempts to wrest land, privileges, and rights to self-governance from the colonial regime. Overall the project urges us to reconsider the extent to which colonial expansion into the early U.S.-Mexico borderlands was European. It also asks whether we have, by relying on European sources to write histories of nation-states, elided native peoples from key American stories and distorted the history of a transnational region vitally important to both Mexico and the United States today.
Enhanced repertoire of brain dynamical states during the psychedelic experience
Creators: name: Tagliazucchi, Enzo
name: Carhart-Harris, Robin
name: Leech, Robert
name: Nutt, David
name: Chialvo, Dante R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The study of rapid changes in brain dynamics and functional connectivity (FC) is of increasing interest in neuroimaging. Brain states departing from normal waking consciousness are expected to be accompanied by alterations in the aforementioned dynamics. In particular, the psychedelic experience produced by psilocybin (a substance found in `magic mushrooms`) is characterized by unconstrained cognition and profound alterations in the perception of time, space and selfhood. Considering the spontaneous and subjective manifestation of these effects, we hypothesize that neural correlates of the psychedelic experience can be found in the dynamics and variability of spontaneous brain activity fluctuations and connectivity, measurable with functional Magnetic Resonance Imaging (fMRI). Fifteen healthy subjects were scanned before, during and after intravenous infusion of psilocybin and an inert placebo. Blood-Oxygen Level Dependent (BOLD) temporal variability was assessed computing the variance and total spectral power, resulting in increased signal variability bilaterally in the hippocampi and anterior cingulate cortex. Changes in BOLD signal spectral behavior (including spectral scaling exponents) affected exclusively higher brain systems such as the default mode, executive control and dorsal attention networks. A novel framework enabled us to track different connectivity states explored by the brain during rest. This approach revealed a wider repertoire of connectivity states post-psilocybin than during control conditions. Together, the present results provide a comprehensive account of the effects of psilocybin on dynamical behaviour in the human brain at a macroscopic level and may have implications for our understanding of the unconstrained, hyper-associative quality of consciousness in the psychedelic state.
Clean Ocean Advocate, November 2004
Creators: name: No Name Supplied
Publisher: name: Clean Ocean Action (COA)
Year: 2004

description: The monthly Clean Ocean Advocate newsletter informs citizens about critical ocean pollution issues, important meeting dates, proposed legislation, special events, and other notes of interest. Articles in this issue include: Contaminated Sediments; Fall 2004 Beach Sweeps; Wasting Our Waters Away; Artificial Reefs; Education; Ocean Golf Classic - 2004; Flotsam and Jetsam; Participating Organization; What's Cool at ICE?
Sewage Sludge Production by Management Mode - 2002
Creators: name: No Name Supplied
Publisher: name: New Jersey Department of Environmental Protection (NJDEP), Division of Water Quality, Bureau of Pretreatment and Residuals
Year: 2002

description: This document presents tables that show data on sewage sludge removal for the calendar year 2002 in New Jersey. The first table presents quantities of sewage sludge generated and modes of management in New Jersey in 2002. Information is presented by county, subtotaled by county and mode, and totaled for the state. The percentage managed in each mode is also presented. The table in detail adds the amount of sewage sludge reported removed by individual generators in 2002. The information is presented by county, municipality, and generator.
2000 Air Quality Report
Creators: name: No Name Supplied
Publisher: name: Bureau of Air Monitoring : New Jersey Department of Environmental Protection
Year: 2000

description: A summary of the New Jersey air quality data for 2000. Contains information on the Air Quality Index (AQI), concentrations of individual pollutants - sulfur dioxide, fine and inhalable particulates, carbon monoxide, ozone, nitrogen oxides, lead, sulfates and nitrates, smoke shade, and acid precipitation - and a monthly summary of meteorological information. A trend comparison with previous years is also provided. Newly included this year are data from the urban air toxics and photochemical assessment monitoring locations.
EPA's Proposed MACT Floor Standards for Mercury Emissions from Coal-Fired Utility Units: A Statistical and Analytical Assessment
Creators: name: No Name Supplied
Publisher: name: New Jersey Department of Environmental Protection (NJDEP), Division of Science, Research and Technology
Year: 2004

description: On January 30, 2004, the United States Environmental Protection Agency (EPA) proposed Maximum Achievable Control Technology (MACT) standards for mercury emissions from coal-fired utility units. This white paper reviews statistical and analytical approaches that the EPA applied as it developed the proposed MACT standards. The numerous statistical and analytical difficulties with the approaces the EPA used are discussed in detail, and related actions taken by the EPA are noted. With each approach or action, associated difficulties, including questionable assumptions, inappropriate statistical operations, or failure to consider important aspects, are described.
New Jersey Department of Environmental Protection Office of Natural Resource Restoration 2003 Settlement / Restoration Report
Creators: name: No Name Supplied
Publisher: name: New Jersey Department of Environmental Protection (NJDEP), Office of Natural Resource Restoration
Year: 2004

description: This report lists all the settled hazardous and petroleum discharge cases that the Office of Natural Resource Restoration has settled from the inception of the program in 1993 through the fourth quarter of 2003. The primary mission of the Office of Natural Resource Restoration is to provide for the assessment and restoration of New Jersey's natural resources that have been injured by the release of oil and hazardous substances. Restoration projects must have a demonstrable link to injuries caused by specific releases.