cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Damage detection in an uncertain nonlinear beam based on stochastic Volterra series
Creators: name: Villani, Luis Gustavo Giacon
name: da Silva, Samuel
name: Cunha, Americo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Probability (math.PR)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.5.4
subject: 62P30

description: The damage detection problem in mechanical systems, using vibration measurements, is commonly called Structural Health Monitoring (SHM). Many tools are able to detect damages by changes in the vibration pattern, mainly, when damages induce nonlinear behavior. However, a more difficult problem is to detect structural variation associated with damage, when the mechanical system has nonlinear behavior even in the reference condition. In these cases, more sophisticated methods are required to detect if the changes in the response are based on some structural variation or changes in the vibration regime, because both can generate nonlinearities. Among the many ways to solve this problem, the use of the Volterra series has several favorable points, because they are a generalization of the linear convolution, allowing the separation of linear and nonlinear contributions by input filtering through the Volterra kernels. On the other hand, the presence of uncertainties in mechanical systems, due to noise, geometric imperfections, manufacturing irregularities, environmental conditions, and others, can also change the responses, becoming more difficult the damage detection procedure. An approach based on a stochastic version of Volterra series is proposed to be used in the detection of a breathing crack in a beam vibrating in a nonlinear regime of motion, even in reference condition (without crack). The system uncertainties are simulated by the variation imposed in the linear stiffness and damping coefficient. The results show, that the nonlinear analysis done, considering the high order Volterra kernels, allows the approach to detect the crack with a small propagation and probability confidence, even in the presence of uncertainties.
Recent results on heavy flavor production at RHIC-PHENIX
Creators: name: Hachiya, Takashi
Publisher: name: Zenodo
Year: 2022
Subjects: inpc16
phenix
heavy flavor
charm
bottom
energy loss
electron
muon
vtx
fvtx
dca
d-meson
b-mason
raa
nuclear
modification
mid-rapidity
forward-rapidity
rhic

description: Talk presented at the International Nuclear Physics Conference (INPC) 2016 (Website not available)
A long-lived compact jet in the black hole X-ray binary candidate AT2019wey
Creators: name: Cao, Hong-Min
name: Migliori, Giulia
name: Giroletti, Marcello
name: Sandor Frey
name: Yang, Jun
name: Gabanyi, Krisztina E.
name: Cui, Lang
name: An, Tao
name: Hong, Xiao-Yu
name: Zhang, Wen-Da
Publisher: name: Zenodo
Year: 2021
Subjects: stars:individual:AT2019wey-ISM:jetsandoutflows–X-rays:binaries

description: AT2019wey is a transient discovered by the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey in December of 2019. Follow-up optical, radio, and X-ray observations led to classify this source as a Galactic black hole X-ray binary. We carried out one-epoch 6.7-GHz European VLBI (Very Long Baseline Interferometry) Network (EVN) and two-epoch multiple-frequency (1.6, 4.5, 6.7 GHz) Very Long Baseline Array (VLBA) observations within a year after it was first discovered. These observations reveal a fading and flat-spectrum radio source with no discernible motion. These features suggest the detection of a compact jet. The source appears resolved at milliarcsec scales, and the source angular size vs. frequency trend is consistent with scatter broadening. This allows us to constrain the lower limit of the source distance to 6 kpc, if the scattering medium is in a Galactic spiral arm. For a source location larger than 3 kpc, the estimated upper limit of the peculiar velocity, relative to the local standard of rest, suggests the asymmetric natal kick could happen during the black hole formation stage.
description: {"references": ["arXiv:2012.00160", "arXiv:2012.00169", "Yadlapalli, N., Ravi, V., Yao, Y., Kulkarni, S. R., Brisken, W., 2021, ApJ, 909, L27"]}
title: Newfoundland
title: Newfoundland
Creators: name: Hiller, James K.
name: O'Brien, Mike
Publisher: name: BSB - Bavarian State Library
Year: 2019
Subjects: subject: Newfoundland and Labrador
subject: Weltkrieg [1914-1918]
subject: World War, 1914-1918
subject: Newfoundland and Labrador

description: Newfoundland entered the Great War with great enthusiasm, but was unprepared for what lay ahead. The war greatly stimulated the local economy, since fish prices rose to unprecedented heights. The mining industry also eventually prospered, but the newsprint sector did less well.  This is partly because there were endemic shipping problems caused in part by the sale of locally-owned steel-hulled vessels to the Russian government.  Originally managed by the Newfoundland Patriotic Association, recruitment became a responsibility of the new National Government in 1917, which brought in conscription. The long-term impact of the war undermined the country’s independence.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Configuration interaction calculations of the controlled phase gate in double quantum dot qubits
Creators: name: Nielsen, Erik
name: Muller, Richard P.
name: Carroll, Malcolm S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider qubit coupling resulting from the capacitive coupling between two double quantum dot (DQD) single-triplet qubits. Calculations of the coupling when the two DQDs are detuned symmetrically or asymmetrically are performed using a full configuration interaction (CI). The full CI reveals behavior that is not observed by more commonly used approximations such as Heitler London or Hund Mulliken, particularly related to the operation of both DQDs in the (0,2) charge sector. We find that there are multiple points in detuning-space where a two-qubit entangling gate can be realized, and that trade-offs between coupling magnitude and sensitivity to fluctuations in detuning make a case for operating the gate in the (0,2) regime not commonly considered.
description: 4 pages, 5 figures
Maerki-Bapst, Möbel - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2022
Subjects: subject: 338 Produktion
subject: 749 Möbel, Möbelzubehör
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Möbelhandel
subject: Möbel
subject: Firma

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
title: Drugs
title: Drugs
Creators: name: Kamieński, Łukasz
Publisher: name: BSB - Bavarian State Library
Year: 2019
Subjects: subject: Weltkrieg [1914-1918]
subject: Alkohol
subject: World War, 1914-1918
subject: Alcohol

description: Throughout history, intoxicants were an important part of the war experience. The First World War was by no means an exception in that respect: its main “war drugs” were alcohol (mostly beer, brandy, rum, schnapps, wine, and vodka), morphine, and cocaine. These were both “prescribed” by military authorities and “self-prescribed” by soldiers. As in the past, the reasons for using drugs varied: from purely medical (killing the pain, anesthetizing, and energizing) to performance enhancement, from raising the fighting spirit to alleviating combat trauma, from strengthening bonds between companions to mitigating the fear of battle. Simultaneously and paradoxically, in many states temperance ideas gained in popularity and prohibitionist regulations were adopted.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Äntli fürsi im Entli - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2022
Subjects: subject: 625 Eisenbahn- und Straßenbau
subject: 710 Städtebau, Raumplanung, Landschaftsgestaltung
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Nationalstraße
subject: Autobahnnetz
subject: Meierhans, Paul

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
title: Moral Norms and Values
title: Moral Norms and Values
Creators: name: Barry, Gearóid
Publisher: name: BSB - Bavarian State Library
Year: 2019
Subjects: subject: Weltkrieg [1914-1918]
subject: Moral
subject: World War, 1914-1918--Moral and ethical aspects

description: Change and continuity marked belligerent societies’ norms and values during the First World War. Normative institutions such as marriage and the family proved basically resilient but “fatherlessness” propelled anxieties about unruly youth who asserted greater autonomy in terms of leisure and courtship. Non-marital relationships received pragmatic state recognition withheld before the war. Rhetoric of sacrifice and restraint, backed up by law, ordained norms for personal consumption, as seen in the regulation of alcohol and of sexuality, just as a coarse egalitarianism drove attacks on profiteering. The civilian-soldier distinction weakened with state-sanctioned repression of dissenters and anti-imperial revolts. Mass violence permeated societies and expanded the categories of expendable lives even if humanitarian mobilization salved some wounds.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Allmend Wollishofen - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2022
Subjects: subject: 790 Sport, Spiele, Unterhaltung
subject: 798 Pferdesport, Tierrennen
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Allmend (Zürich)
subject: Rennverein (Zürich)
subject: Pferderennen
subject: Grasbahnrennen

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Nonadiabatic effects of rattling phonons and 4f excitations in Pr(Os{1-x}Ru{x})4Sb12
Creators: name: Thalmeier, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the skutterudite compounds the anharmonic 'rattling' oscillations of 4f-host ions in the surrounding Sb12 cages are found to have significant influence on the low temperature properties. Recently specific heat analysis of Pr(Os{1-x}Ru{x})4Sb12 has shown that the energy of crystalline electric field (CEF) singlet-triplet excitations increases strongly with Ru-concentration x and crosses the almost constant rattling mode frequency $ω_0$ at about x ~ 0.65. Due to magnetoelastic interactions this may entail prominent nonadiabatic effects in inelastic neutron scattering (INS) intensity and quadrupolar susceptibility. Furthermore the Ru- concentration dependence of the superconducting Tc, notably the minimum at intermediate x is explained as a crossover effect from pairforming aspherical Coulomb scattering to pairbreaking exchange scattering.
description: 12 pages, 5 figures; to appear in Phys. Rev. B
Vanadium : leaching and solvent extraction
Creators: name: Tavakolikhaledi, Mohammadreza
Publisher: name: University of British Columbia
Year: 2014

description: The fundamental understanding of vanadium hydrometallurgy was developed in three phases: vanadium (V) leaching, vanadium (III) oxidative leaching, and solvent extraction of vanadium (V&IV). In the first section, V₂O₅ leaching was studied in three steps. First, vanadium leaching and solubility of VO₂⁺ at different pH’s and temperatures were investigated in sulfuric acid. Secondly, the kinetics of vanadium leaching in pH 5 and pH 8 solutions, and the reductive leaching of vanadium pentoxide using sodium sulfite were studied. It was shown that the kinetics of acid leaching is rapid but suffers from low solubility of VO₂⁺ in solution. Thirdly, the shrinking sphere model was employed to analyze the kinetics of reductive leaching. In the second step, V₂O₃ oxidative leaching was studied from 30°C to 90°C in sulfuric acid. This study has also been done in three different sections. First, the kinetics of oxidative leaching using oxygen was investigated. It was shown that this oxidative leaching is chemical reaction rate controlled with an activation energy of 69 kJ/mol. In the next step, it was shown that the presence of ferric enhanced kinetics significantly. Finally, oxidative leaching using a constant ferric-ferrous ratio from 1 to 300 was studied. The addition of KMnO₄ solution to the leach reactor was found to be a suitable oxidant for controlling solution potential. The oxidation rate using the constant ferric-ferrous ratio was very sensitive to temperature, with a large activation energy (38 kJ/mol) and the rate was proportional to the Fe(III)/Fe(II) concentration to the power of 0.47. In the third part, purification of synthetic vanadium-containing solutions using the solvent extraction technique was investigated. Various solvent extractants have been tested for vanadium recovery from acid leachates. One of the biggest problems for purification of the vanadium solution is iron separation. Therefore, this research assesses selectivity of vanadium over iron. The extraction of vanadium (V&IV), iron (III&II) with phosphinic acid (CYANEX 272), phosphonic acid (IONQUEST 801), phosphoric acid (D2EHPA) and phosphine oxide (CYANEX 923) extractants is reported. In addition, the extraction reactions for vanadium (V) and (IV) extraction using CYANEX 923 and D2EHPA were also studied.
Sub-harmonic resonant excitation of confined acoustic modes at GHz frequencies with a high-repetition-rate femtosecond laser
Creators: name: Bruchhausen, A.
name: Gebs, R.
name: Hudert, F.
name: Issenmann, D.
name: Klatt, G.
name: Bartels, A.
name: Schecker, O.
name: Waitz, R.
name: Erbe, A.
name: Scheer, E.
name: Huntzinger, J. -R.
name: Mlayah, A.
name: Dekorsy, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose sub-harmonic resonant optical excitation with femtosecond lasers as a new method for the characterization of phononic and nanomechanical systems in the gigahertz to terahertz frequency range. This method is applied for the investigation of confined acoustic modes in a free-standing semiconductor membrane. By tuning the repetition rate of a femtosecond laser through a sub-harmonic of a mechanical resonance we amplify the mechanical amplitude, directly measure the linewidth with megahertz resolution, infer the lifetime of the coherently excited vibrational states, accurately determine the system's quality factor, and determine the amplitude of the mechanical motion with femtometer resolution.
X-ray Spectral Constraints for z~2 Massive Galaxies: The Identification of Reflection-Dominated Active Galactic Nuclei
Creators: name: Alexander, D. M.
name: Bauer, F. E.
name: Brandt, W. N.
name: Daddi, E.
name: Hickox, R. C.
name: Lehmer, B. D.
name: Luo, B.
name: Xue, Y. Q.
name: Young, M.
name: Comastri, A.
name: Del Moro, A.
name: Fabian, A. C.
name: Gilli, R.
name: Goulding, A. D.
name: Mainieri, V.
name: Mullaney, J. R.
name: Paolillo, M.
name: Rafferty, D. A.
name: Schneider, D. P.
name: Shemmer, O.
name: Vignali, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We use the 4Ms CDF-S survey to place direct X-ray constraints on the ubiquity of z~2 heavily obscured AGNs in K<22 BzK galaxies. Forty seven of the 222 BzK galaxies in the central region of the CDF-S are detected at X-ray energies, 11 of which have hard X-ray spectral slopes (Gamma<1) indicating the presence of heavily obscured AGN activity. The other 36 X-ray detected BzK galaxies appear to be relatively unobscured AGNs and starburst galaxies; we use X-ray variability analyses over a rest-frame baseline of ~3 years to further confirm the presence of AGN activity in many of these systems. The majority (7 out of 11) of the heavily obscured AGNs have excess IR emission over that expected from star formation (termed "IR-excess galaxies"). However, we find that X-ray detected heavily obscured AGNs only comprise ~25% of the IR-excess galaxy population, which is otherwise composed of relatively unobscured AGNs and starburst galaxies. We find that the typical X-ray spectrum of the heavily obscured AGNs is better characterized by a pure reflection model than an absorbed power-law model, suggesting extreme Compton-thick absorption in some systems. We verify this result by producing a composite rest-frame 2-20 keV spectrum, which has a similar shape as a reflection-dominated X-ray spectrum and reveals an emission feature at rest-frame energy ~6.4 keV, likely to be due to Fe K. These heavily obscured AGNs are likely to be the distant analogs of the reflection-dominated AGNs recently identified at z~0 with >10 keV observatories. On the basis of these analyses we estimate the space density for typical (intrinsic X-ray luminosities of L_X>1E43 erg/s) heavily obscured and Compton-thick AGNs at z~2. Our space-density constraints are conservative lower limits but they are already consistent with the range of predictions from X-ray background models.
description: ApJ in press: 15 pages, 6 figures, 3 tables
Wollishofer Frühsozialisten - Wollishofer Blog
Creators: name: Brändli, Sebastian
Publisher: name: Zentralbibliothek Zürich
Year: 2023
Subjects: subject: 335 Sozialsimus und verwandte Systeme
subject: 949 Geschichte anderer Teile Europas
subject: Zürich-Wollishofen
subject: Straßenname
subject: Weitling, Wilhelm
subject: Owen, Robert
subject: Usteri, Paulus
subject: Gmür, Harry
subject: Sozialist

description: Ein Blog zu Geschichte und Quartierleben des Zürcher Stadtquartiers Wollishofen auf wollipedia.ch. Mit Texten von Sebastian Brändli (SB) und Ansichtskarten aus der Sammlung von Markus Zimmermann (MZ).
Three dimensional instability of flexible ferromagnetic filament loop
Creators: name: Ērglis, K.
name: Livanovičs, R.
name: Cēbers, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Dynamics of flexible ferromagnetic filaments in an external magnetic field is considered. We report the existence of a buckling instability of the ferromagnetic filament at the magnetic field reversion, which leads to the formation of a metastable loop. Its relaxation through three dimensional transformation of the configurations is observed experimentally and confirmed by numerical simulations. Bending modulus of the flexible ferromagnetic filaments synthesized by linking micron size core-shell ferromagnetic particles with DNA fragments is estimated by comparison of the parameters of the loops observed in the experiment with theoretical calculations. Formation of the loop and its relaxation are characterized by the numerically calculated writhe number. The relaxation time of the loop allows us to estimate the hydrodynamic drag of the filament.
Anacroneuria atrifrons Klapalek 1922
Creators: name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria atrifrons

description: Anacroneuria atrifrons Klapálek Anacroneuria atrifrons Klapálek 1922:89. Holotype ♂ (British Museum of Natural History), Amazon, St. Paul [Brazil, Amazonas, São Paulo de Olivenca] Anacroneuria montera Stark & Sivec 1998:41. Holotype ♂ (United States National Museum), Iquitos, Loreto, Peru, syn. Froehlich (2008) Material examined. ARGENTINA: Cόrdoba, Alta Gracia, La Paisanita, 17-23 February, 1984, L. Olivia, 1♂, 3♀ (BPS). BRAZIL: Bahia, Barra, 9 December 1907, 1♂ (CMNH). Comments. This species was formerly known from Brazil, Colombia and Peru (Froehlich 2008; Stark 2004; Stark & Sivec 1998; Stark et al. 2001). This is the first Argentine record and both new localities represent significant range extensions beyond the known Amazonas and Loreto area distribution. A. atrifrons Klapálek 1922 Cόrdoba New record
description: Published as part of Stark, Bill P., 2013, LECTOTYPE DESIGNATION AND REDESCRIPTION FOR ANACRONEURIA FUMIGATA KLAPÁLEK (PLECOPTERA: PERLIDAE), WITH NEW RECORDS AND DESCRIPTION OF A NEW SPECIES OF ANACRONEURIA FROM ARGENTINA, pp. 94-100 in Illiesia 9 (7) on pages 96-98, DOI: 10.5281/zenodo.4765326
description: {"references": ["Klapalek, F. 1922. Plecopteres nouveaux. Quatrieme partie. Annales de la Societe Entomologique de Belgique, 62: 89 - 95.", "Stark, B. P. & I. Sivec. 1998. Anacroneuria of Peru and Bolivia (Plecoptera: Perlidae). Scopolia, 40: 1 - 64.", "Froehlich, C. G. 2008. Old species of Neotropical Plecoptera. Pp. 125 - 132 in Hauer, F. R., J. A. Stanford & R. L. Newell (editors). International advances in the ecology, zoogeography and systematics of mayflies and stoneflies. University of California Publications in Entomology, Volume 128. University of California Press, Berkeley and Los Angeles. 412 pp.", "Stark, B. P. 2004. New species and records of Andean Anacroneuria (Insecta, Plecoptera, Perlidae). Spixiana, 27: 67 - 81.", "Stark, B. P., M. C. Zuniga & I. Sivec. 2001. Descriptions of Anacroneuria spp. (Plecoptera: Perlidae) from the upper Rio Amazonas drainage, Colombia and Peru. Acta Entomologica Slovenica, 9: 119 - 122."]}
Bose and Fermi gases in the early universe with self-gravitational effect
Creators: name: Niu, Yuezhen
name: Huang, Junwu
name: Ma, Bo-Qiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the self-gravitational effect on the equation of state (EoS) of Bose and Fermi gases in thermal equilibrium at the end of reheating, the period after quark-hadron transition and before Big Bang Nucleosynthesis (BBN). After introducing new grand canonical partition functions based on the work of Uhlenbeck and Gropper, we notice some interesting features of the newly developed EoSs with distinct behaviors of relativistic and non-relativistic gases under self-gravity. The usual negligence of the self-gravitational effect when solving the background expansion of the early universe is justified with numerical results, showing the magnitude of the self-gravitational modification of the state constant to be less than $O(10^{-78})$. This helps us to clarify the background thermal evolution of the primordial patch. Such clarification is crucial in testing gravity theories, evaluating inflation models and determining element abundances in BBN.
description: 10 pages, 2 figures, to appear in PRD
Gender mainstreaming strategies in the international development context : why practice has not made perfect.
Creators: name: Lukatela, Ana Stephanie
Publisher: name: University of British Columbia
Year: 2014

description: The literature surrounding international organizations and policy cycles has overwhelmingly focused on the dynamics of why policies are adopted to the detriment of asking why they are or are not translated into implementation. This study asks first, what factors explain the differences in adoption and implementation of gender mainstreaming policies in international development organizations, and second, what these dynamics tell us about the reasons for the persistence of such policies in the face of recognized failure. Research was conducted on case studies of UN agencies in Albania, Bosnia and Herzegovina and Kosovo. The findings argue that policy is better studied as a non-linear process where each stage is influenced by different mechanisms emerging from the policy context. Policy adoption depends on the overarching influence of world culture on the attitudes and behaviors of relevant senior management actors who are part of the world polity. However it is also contingent on the dynamics of bureaucratic politics, which can be either personality or policy driven, and can either block policymaking or be used as a tool to overcome differences. The dynamics of implementation on the other hand rely much more on the norms and values of middle management than research up to now has recognized. However for implementation to happen norms are a necessary but not always sufficient factor; they must be paired with organizational behavior protocols that can support implementation among those who are passive towards the relevant norm and there must be ways to sanction programme managers who oppose it. So the support of senior management may be a necessary condition for policy implementation but it is far from sufficient. This study represents a break from the typical IR approach of using one theoretical argument to explain an entire phenomenon and reasserts the importance of opening up the black box of organizations to examine actors at different levels and their interactions. Improving the success of mainstreaming policies, such as gender, HIV/AIDS or the environment ultimately depends on recognizing these mechanisms and addressing the previously underestimated role of middle management.
Membrane ageing due to chemical cleaning agent
Creators: name: Abdullah, Syed Zaki
Publisher: name: University of British Columbia
Year: 2014

description: Sodium hypochlorite is commonly used as a cleaning agent to remove adsorbed foulants from PVDF-based micro/ultra filtration membranes in water and wastewater treatment applications. Although effective for fouling control, extended sodium hypochlorite exposure can affect the physical/chemical characteristics and hinder the treatment performance of these membranes. In the present study, experiments were conducted to comprehensively quantify the effects of sodium hypochlorite exposure on changes in the physical/chemical characteristics and the filtration performances of blended PVDF-based supported hollow-fiber membranes and identifying the mechanism(s) responsible for the changes. Both the effect of the sodium hypochlorite concentration (C) and the duration of exposure (t) on the membrane characteristics are investigated. The physical/chemical characteristics and the filtration performances of virgin and aged (i.e., weathered due to exposure to sodium hypochlorite) membranes were compared. The membranes were characterized based on chemical composition (FTIR and NMR), mechanical strength (yield strength), surface hydrophilicity (contact angle), pore size and porosity (scanning electron microscopy and challenge test), membrane resistance (clean water permeation test), and affinity of the membrane for foulants (cleaning efficiency). The results indicated that exposure dose and concentration of the sodium hypochlorite used have a significant influence on the membrane characteristics. For the exposure conditions considered, the impact of sodium hypochlorite exposure on the parameters investigated could be most accurately and consistently correlated to an exposure dose relationship of the form Cnt (where, C=concentration and t=exposure time) rather than the Ct relationship commonly used to define the extent of exposure to cleaning agents. For all the parameters investigated, the power coefficient n was less than 1 indicating that time had a greater impact on the changes than did the concentration of the sodium hypochlorite. The results suggest that the use of sodium hypochlorite for chemical cleaning, at concentrations that are higher than those typically used for chemical cleaning would have less of an effect on the characteristics of the membrane materials. Changes in the characteristics were attributed to the oxidation of the hydrophilic additives (HA) present in blended PVDF membranes. A new non-destructive membrane characterization technique to evaluate the amount of membrane ageing is proposed.
Anacroneuria fumigata Klapalek 1922
Creators: name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria fumigata

description: Anacroneuria fumigata Klapálek (Figs. 1-4) Anacroneuria fumigata Klapálek 1922:95. Lectotype ♂, here designated (National Museum, Prague), Espírito Santo, Brazil Anacroneuria fumigata: Froehlich, 2010a:156. Material examined. BRAZIL: Espírito Santo, lectotype ♂ (NMP). Male genitalia. Hammer thimble shaped, height greater than basal diameter (Fig. 1). Aedeagal apex bearing upright lobes on ventral and dorsal surfaces beyond hooks (Figs. 2-4); apex slender in dorsal and ventral aspect, and slightly excavated, but somewhat thicker and irregular in lateral aspect; ventral lobe concave, dorsal lobe convex. Hooks slender (Figs. 2, 4). Femle. Unknown. Larva. Unknown. Comments. The Berlin syntype is said to be missing (Froehlich 2010a) and the original description does not identify the total number of syntypes, consequently I designate the National Museum, Prague, Anacroneuria fumigata Klapálek male specimen labeled Zw# 100 as lectotype in order to provide stability for this species. The aedeagus is quite distinctive and no closely related species is known.
description: Published as part of Stark, Bill P., 2013, LECTOTYPE DESIGNATION AND REDESCRIPTION FOR ANACRONEURIA FUMIGATA KLAPÁLEK (PLECOPTERA: PERLIDAE), WITH NEW RECORDS AND DESCRIPTION OF A NEW SPECIES OF ANACRONEURIA FROM ARGENTINA, pp. 94-100 in Illiesia 9 (7) on page 96, DOI: 10.5281/zenodo.4765326
description: {"references": ["Klapalek, F. 1922. Plecopteres nouveaux. Quatrieme partie. Annales de la Societe Entomologique de Belgique, 62: 89 - 95.", "Froehlich, C. G. 2010 a. Catalogue of Neotropical Plecoptera. Illiesia, 6: 118 - 205."]}
Anacroneuria handlirschi Klapalek 1922
Creators: name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria handlirschi

description: Anacroneuria handlirschi Klapálek Anacroneuria handlirschi Klapálek 1922:94. Lectotype ♂ (Vienna Museum), Coroica, Bolivia, designation by Zwick (1973) Anacroneuria handlirschi: Stark & Sivec, 1998:28. Material examined. ARGENTINA: Salta, Aguas Blancas, Oran, 1 March 1958, 1♂ (BPSC). Comments. This species was previously reported from Bolivia and Peru (Stark & Sivec 1998). A. handlirschi Klapálek 1922 Salta New record
description: Published as part of Stark, Bill P., 2013, LECTOTYPE DESIGNATION AND REDESCRIPTION FOR ANACRONEURIA FUMIGATA KLAPÁLEK (PLECOPTERA: PERLIDAE), WITH NEW RECORDS AND DESCRIPTION OF A NEW SPECIES OF ANACRONEURIA FROM ARGENTINA, pp. 94-100 in Illiesia 9 (7) on pages 96-98, DOI: 10.5281/zenodo.4765326
description: {"references": ["Klapalek, F. 1922. Plecopteres nouveaux. Quatrieme partie. Annales de la Societe Entomologique de Belgique, 62: 89 - 95.", "Zwick, P. 1973. Die Plecopteren-Arten Enderleins (Insecta); Revision der Typen. Annales Zoologici, 30: 471 - 507.", "Stark, B. P. & I. Sivec. 1998. Anacroneuria of Peru and Bolivia (Plecoptera: Perlidae). Scopolia, 40: 1 - 64."]}
Classification of Covering Spaces and Canonical Change of Basepoint
Creators: name: Wemmenhove, Jelle
name: Manea, Cosmin
name: Portegies, Jim
Publisher: name: arXiv
Year: 2024
Subjects: subject: Algebraic Topology (math.AT)
subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: F.4.1; I.2.4
subject: 68V20

description: Using the language of homotopy type theory (HoTT), we 1) prove a synthetic version of the classification theorem for covering spaces, and 2) explore the existence of canonical change-of-basepoint isomorphisms between homotopy groups. There is some freedom in choosing how to translate concepts from classical algebraic topology into HoTT. The final translations we ended up with are easier to work with than the ones we started with. We discuss some earlier attempts to shed light on this translation process. The proofs are mechanized using the Coq proof assistant and closely follow classical treatments like those by Hatcher.
description: 23 pages
Chern classes of graph hypersurfaces and deletion-contraction
Creators: name: Aluffi, Paolo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the behavior of the Chern classes of graph hypersurfaces under the operation of deletion-contraction of an edge of the corresponding graph. We obtain an explicit formula when the edge satisfies two technical conditions, and prove that both these conditions hold when the edge is multiple in the graph. This leads to recursions for the Chern classes of graph hypersurfaces for graphs obtained by adding parallel edges to a given (regular) edge. Analogous results for the case of Grothendieck classes of graph hypersurfaces were obtained in previous work. Both Grothendieck classes and Chern classes were used to define `algebro-geometric' Feynman rules. The results in this paper provide further evidence that the polynomial Feynman rule defined in terms of the Chern-Schwartz-MacPherson class of a graph hypersurface reflects closely the combinatorics of the corresponding graph.The key to the proof of the main result is a more general formula for the Chern-Schwartz-MacPherson class of a transversal intersection, which may be of independent interest. We also describe a more geometric approach, using the apparatus of `Verdier specialization'.
Measurements of forward proton production with incident protons and charged pions on nuclear targets at the CERN Proton Synchroton
Creators: name: al., M. Apollonio et
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the double-differential proton production cross-section in the range of momentum 0.5 GeV/c < p < 8.0 GeV/c and angle 0.05 rad < θ< 0.25 rad in collisions of charged pions and protons on beryllium, carbon, aluminium, copper, tin, tantalum and lead are presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors and impinged on a target of 5 % of a nuclear interaction length. The tracking and identification of the produced particles was performed using the forward spectrometer of the HARP experiment. Results are obtained for the double-differential cross-sections mainly at four incident beam momenta (3 GeV/c, 5 GeV/c, 8 GeV/c and 12 GeV/c). Measurements are compared with predictions of the GEANT4 and MARS Monte Carlo generators.
description: submitted to Physical Review C
Natural h -> 4g in Supersymmetric Models and R-Hadrons at the LHC
Creators: name: Luty, Markus A.
name: Phalen, Daniel J.
name: Pierce, Aaron
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a simple and natural supersymmetric model where the dominant Higgs decay is h -> aa followed by a -> gg. In this case m_h < m_Z is compatible with all experimental searches, completely eliminating the fine tuning otherwise required to satisfy Higgs search limits. The model extends the MSSM with singlet Higgs fields as well as vector-like colored particles that mediate the decay a -> gg. The a is a pseudo-Nambu Goldstone boson of a new global U(1) symmetry, and can naturally have any mass from a few GeV to m_h/2. All interactions can be perturbative up to the GUT scale, and gauge coupling unification is preserved if the colored mediators come in complete GUT representations. In this case a -> gamma gamma has a ~1% branching ratio, so h -> gg gamma gamma may be observable. The colored particles that mediate the h -> gg decay must be below the TeV scale, and can therefore be produced at the LHC. If these particles are stable on collider timescales, they will appear as R-hadrons, a signal visible in early LHC running. A smoking-gun signal that the stable colored particles are mediators of h -> 4j is R-hadron production in association with an a. We show that this signal with a -> gamma gamma is observable at LHC with as little as 10 fb^{-1} of integrated luminosity. Observation of R-hadrons plus missing energy can show that the superpartner of the R-hadron is R-parity odd, and therefore not an ordinary quark or gluon.
description: 12 pages
Towards Loop Quantization of Plane Gravitational Waves
Creators: name: Hinterleitner, Franz
name: Major, Seth
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The polarized Gowdy model in terms of Ashtekar-Barbero variables is further reduced by including the Killing equations for plane-fronted parallel gravitational waves with parallel rays. The resulting constraint algebra, including one constraint derived from the Killing equations in addition to the standard ones of General Relativity, are shown to form a set of first-class constraints. Using earlier work by Banerjee and Date the constraints are expressed in terms of classical quantities that have an operator equivalent in Loop Quantum Gravity, making space-times with pp-waves accessible to loop quantization techniques.
description: 14 pages
Parton saturation at strong coupling from AdS/CFT
Creators: name: Iancu, Edmond
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: I describe the parton picture at strong coupling emerging from the gauge/gravity duality, with emphasis on the universality of the phenomenon of parton saturation. I discuss several consequences of this picture for the phenomenology of a strongly coupled quark-gluon plasma, which are potentially relevant for heavy ion collisions at RHIC and LHC.
description: 16 pages, invited talk at the Workshop on Saturation, the Color Glass Condensate and Glasma, May 10-12 2010, Brookhaven, USA, to appear in Nuclear Physics A
Generalization of the Gell-Mann formula for sl(n,R) and su(n) algebras
Creators: name: Salom, Igor
name: Sijacki, Djordje
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The so called Gell-Mann or decontraction formula is proposed as an algebraic expression inverse to the Inonu-Wigner Lie algebra contraction. It is tailored to express the Lie algebra elements in terms of the corresponding contracted ones. In the case of sl(n,R) and su(n) algebras, contracted w.r.t. so(n) subalgebras, this formula is generally not valid, and applies only in the cases of some algebra representations. A generalization of the Gell-Mann formula for sl(n,R) and su(n) algebras, that is valid for all tensorial, spinorial, (non)unitary representations, is obtained in a group manifold framework of the SO(n) and/or Spin(n) group. The generalized formula is simple, concise and of ample application potentiality. The matrix elements of the SL(n,R)/Spin(n), i.e. SU(n)/SO(n), generators are determined, by making use of the generalized formula, in a closed form for all irreducible representations.
Anacroneuria impensa Jewett 1959
Creators: name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria impensa

description: Anacroneuria impensa Jewett Anacroneuria impensa Jewett 1959:157. Holotype ♀ (California Academy of Sciences), Nova Teutonia, Santa Catarina, Brazil Anacroneuria impensa: Froehlich, 2002:80. Material examined. ARGENTINA: Misiones, Arroyo Piray-Mini, W Dos Hermanas, 23 November 1973, O.S. Flint, Jr. 3♂ (USNM). Comments. Froehlich (2002) previously reported A. impensa from this site. The species is presently known only from the Brazilian type locality and from this Argentine site. A. impensa Jewett 1959 Misiones Froehlich, 2002
description: Published as part of Stark, Bill P., 2013, LECTOTYPE DESIGNATION AND REDESCRIPTION FOR ANACRONEURIA FUMIGATA KLAPÁLEK (PLECOPTERA: PERLIDAE), WITH NEW RECORDS AND DESCRIPTION OF A NEW SPECIES OF ANACRONEURIA FROM ARGENTINA, pp. 94-100 in Illiesia 9 (7) on pages 96-98, DOI: 10.5281/zenodo.4765326
description: {"references": ["Jewett, S. G., Jr. 1959. Some stoneflies from Santa Catarina, Brazil (Plecoptera). The American Midland Naturalist, 61: 148 - 161.", "Froehlich, C. G. 2002. Anacroneuria mainly from southern Brazil and northeastern Argentina (Plecoptera: Perlidae). Proceedings of the Biological Society of Washington, 115: 75 - 107."]}
VLT/X-shooter Spectroscopy of a Dusty Planetary Nebula Discovered with Spitzer/IRS
Creators: name: Oliveira, Isa
name: Overzier, Roderik A.
name: Pontoppidan, Klaus M.
name: van Dishoeck, Ewine F.
name: Spezzi, Loredana
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: As part of a mid-infrared spectroscopic survey of young stars with the Spitzer Space Telescope, an unclassified red emission line object was discovered. Based on its high ionization state indicated by the Spitzer spectrum, this object could either be a dusty Supernova Remnant (SNR) or a Planetary Nebula (PN). In this research note, the object is classified and the available spectroscopic data are presented to the community for further analysis. UV/optical/NIR spectra were obtained during the science verification run of the VLT/X-shooter. A large number of emission lines are identified allowing the determination of the nature of this object. The presence of strong, narrow (Delta_v ~ 8 - 74 km/s) emission lines, combined with very low line ratios of, e.g., [N II]/Halpha and [S II]/Halpha show that the object is a Planetary Nebula (PN) that lies at an undetermined distance behind the Serpens Molecular Cloud. This illustrates the potential of X-shooter as an efficient tool for constraining the nature of faint sources with unknown spectral properties or colors.
description: 4 pages, 5 figures, accepted by A&A
Community assembly along sub-Arctic roadsides : the role of plant functional traits in native and exotic species
Creators: name: Leathem, Jamie Anne
Publisher: name: University of British Columbia
Year: 2014

description: Much is known about plant-environment associations, but we are far from able to predict community species composition under a given set of environmental conditions. Recent research using functional traits suggests niche-based processes are vital in structuring communities, though the generality of results across different ecosystems is unknown. I investigated community trait distribution along environmental gradients in sub-Arctic roadsides-- communities which represent novel ecosystems in which to apply trait-based analysis, and which allow for the comparison of ecological strategies and trait distribution of native and exotic species. While these environments have features specific to northern latitudes, they also broadly represent global roadside environments and their important role in the establishment and spread of exotic species. Invasive exotic species present a pervasive threat to global diversity, and understanding mechanisms of assembly, coexistence and strategies of native and exotic roadside communities can improve our ability to predict invasive species' behaviour. I measured species abundance and three functional traits in 42 roadside plots in the Yukon Territory and compared community traits across elevation, latitude and age of road. Across all species, abundance-weighted community height was negatively correlated with elevation and positively correlated with latitude. Native and exotic species tracked environment differently, however, and exotic species showed correlations between height and road age and between specific leaf area (SLA) and latitude that were not present among native species. A comparison of mean trait values of native and exotic species irrespective of environment revealed specific leaf area (SLA) was greater in exotic species than native species. In addition, I used three null models to test for habitat filtering and competitive exclusion, two important niche-based assembly processes. Ranges of trait values across plots were smaller than expected and trait values more evenly spaced compared to random samples from the regional species pool, suggesting both habitat filtering and competitive exclusion (limiting similarity) shape these disturbance communities. Both processes were found to also affect both presence/absence and abundance of species. Understanding mechanisms of community assembly along roadsides and the characterization of native and exotic community constituents will have important implications for development of conservation management strategies.
On homotopy Poisson actions and reduction of symplectic Q-manifolds
Creators: name: Mehta, Rajan Amit
Publisher: name: arXiv
Year: 2010
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53D20, 53D17, 58A50, 17B70, 53D18

description: We present a general framework for reduction of symplectic Q-manifolds via graded group actions. In this framework, the homological structure on the acting group is a multiplicative multivector field.
Anacroneuria trimacula Jewett 1959
Creators: name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria trimacula

description: Anacroneuria trimacula Jewett Anacroneuria trimacula Jewett 1959:155. Holotype ♀ (California Academy of Sciences), Nova Teutonia, Santa Catarina, Brazil Anacroneuria trimacula: Froehlich, 2002:88 Material examined. ARGENTINA: Misiones, Arroyo Coati, 15 km E San Jose, 18-19 November 1973, O.S. Flint, Jr. 2♂, 1♀ (USNM). Comments. Froehlich (2002) previously reported this species from the same site and several additional ones in Brazil, Argentina and Paraguay. More recently, De Ribeiro & Froehlich (2007) reported the species from Rio Grande do Sul State in Brazil. A. trimacula Jewett 1959 Misiones Froehlich, 2002
description: Published as part of Stark, Bill P., 2013, LECTOTYPE DESIGNATION AND REDESCRIPTION FOR ANACRONEURIA FUMIGATA KLAPÁLEK (PLECOPTERA: PERLIDAE), WITH NEW RECORDS AND DESCRIPTION OF A NEW SPECIES OF ANACRONEURIA FROM ARGENTINA, pp. 94-100 in Illiesia 9 (7) on pages 96-99, DOI: 10.5281/zenodo.4765326
description: {"references": ["Jewett, S. G., Jr. 1959. Some stoneflies from Santa Catarina, Brazil (Plecoptera). The American Midland Naturalist, 61: 148 - 161.", "Froehlich, C. G. 2002. Anacroneuria mainly from southern Brazil and northeastern Argentina (Plecoptera: Perlidae). Proceedings of the Biological Society of Washington, 115: 75 - 107.", "De Ribeiro, V. R. & C. G. Froehlich. 2007. Two new species of Anacroneuria (Plecoptera: Perlidae) from southern Brazil. Zootaxa, 1624: 53 - 57."]}