cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Older adults' experiences of having managed well in making the transition to assisted living
Creators: name: Gofton, Lucy Veryan
Publisher: name: University of British Columbia
Year: 2014

description: The number of Canadians over the age of 65 is consistently increasing, and it is estimated that by 2026 over one fifth of the population will be 65 years or older. A significant transition faced by individuals later in life is the move to residential care. In order to better understand the phenomenon of managing well in making the transition to assisted living, eleven individuals between the ages of 66 and 95 were interviewed. The study used an interpretive phenomenological approach guided by the research question: What is the meaning and experience for older adults, of managing-well in making the transition to assisted living? Participants’ accounts of the meaning of managing their transition to assisted living well and common aspects of the experience were identified. The results found that seven themes were common to their experiences of having managed well in making the transition: (1) sense of improved quality of life, (2) sense of belonging, (3) willingness to get involved, (4) sense of continuity, (5) sense of acceptance, (6) perceived sense of openness and (7) not wanting to be a burden. This study provides an in-depth understanding of what may contribute to managing well in making what has previously been identified as a challenging transition. Potential implications for theory, research, and policies for assisted living facilities are discussed. In addition, implications of the study’s findings for counsellors working with older adults and their families around entry into assisted living are addressed.
Degenerate self-similar measures, spectral asymptotics and small deviations of Gaussian processes
Creators: name: Nazarov, A. I.
name: Sheipak, I. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Spectral Theory (math.SP)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 34L20, 60G15, 60G22

description: We find the logarithmic small ball asymptotics for the $L_2$-norm with respect to a degenerate self-similar measures of a certain class of Gaussian processes including Brownian motion, Ornstein - Uhlenbeck process and their integrated counterparts.
description: 15 pages, 1 figure
First results from fringe tracking with the PRIMA fringe sensor unit
Creators: name: Sahlmann, J.
name: Abuter, R.
name: Menardi, S.
name: Schmid, C.
name: Di Lieto, N.
name: Delplancke, F.
name: Frahm, R.
name: Gomes, N.
name: Haguenauer, P.
name: Leveque, S.
name: Morel, S.
name: Mueller, A.
name: Duc, T. Phan
name: Schuhler, N.
name: van Belle, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The fringe sensor unit (FSU) is the central element of the phase referenced imaging and micro-arcsecond astrometry (PRIMA) dual-feed facility for the Very Large Telescope interferometer (VLTI). It has been installed at the Paranal observatory in August 2008 and is undergoing commissioning and preparation for science operation. Commissioning observations began shortly after installation and first results include the demonstration of spatially encoded fringe sensing and the increase in VLTI limiting magnitude for fringe tracking. However, difficulties have been encountered because the FSU does not incorporate real-time photometric correction and its fringe encoding depends on polarisation. These factors affect the control signals, especially their linearity, and can disturb the tracking control loop. To account for this, additional calibration and characterisation efforts are required. We outline the instrument concept and give an overview of the commissioning results obtained so far. We describe the effects of photometric variations and beam-train polarisation on the instrument operation and propose possible solutions. Finally, we update on the current status in view of the start of astrometric science operation with PRIMA.
description: 12 pages, 11 figures, SPIE 2010 conference proceedings
Leading-order hadronic contribution to g-2 from lattice QCD
Creators: name: Renner, Dru B.
name: Feng, Xu
name: Jansen, Karl
name: Petschlies, Marcus
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We calculate the leading-order hadronic correction to the anomalous magnetic moments of each of the three charged leptons in the Standard Model: the electron, muon and tau. Working in two-flavor lattice QCD, we address essentially all sources of systematic error: lattice artifacts, finite-size effects, quark-mass extrapolation, momentum extrapolation and disconnected diagrams. The most significant remaining systematic error, the exclusion of the strange and charm quark contributions, will be addressed in our four-flavor calculation. We achieve a statistical accuracy of 2% or better for the physical values for each of the three leptons and the systematic errors are at most comparable.
description: Proceedings of invited talk at ICHEP 2010
Elmas Açik Erişim İçin Eylem Plani
Creators: name: Ancion, Zoé
name: Borrell-Damián, Lidia
name: Mounier, Pierre
name: Rooryck, Johan
name: Saenen, Bregt
Publisher: name: Zenodo
Year: 2023

description: Science Europe, cOAlition S, OPERAS, and the French National Research Agency (ANR) present an Action Plan for Diamond Open Access to further develop and expand a sustainable, community-driven Diamond OA scholarly communication ecosystem. It focuses on efficiency, quality standards, capacity building, and sustainability, and it addresses the alignment and development of common resources for the whole Diamond OA ecosystem, including journals and platforms, while respecting the cultural, multilingual, and disciplinary diversity that constitutes the strength of the sector. The Action Plan intends to create an inclusive worldwide community that has the tools to strengthen existing Diamond OA journals and platforms and increase their visibility.
Neoperla hamata Jewett 1975
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Neoperla
Neoperla hamata

description: Neoperla hamata Jewett (Figs. 26‐28, 94‐96) Neoperla hamata Jewett, 1975:131. Holotype ♂ (California Academy of Sciences). Kaziranga, Kohara, Assam, India Neoperla hamata: Uchida & Yamasaki, 1989:142. Redescription Material examined. Vietnam: Nghe An, W of Con Cuong, Khe Moi Forestry Camp, Khe Moi River, 18 ° 56’ N, 104 ° 99’ E, 23‐24 October 1994, D. Currie, ROM 946110, 1 ♀ (ROM). Tuyen Quang, 6 km NE Pac Ban, UV light, 31 May 1996, D. Currie, D. Darling, J. Swann, ROM 963095, 1 ♀ pinned (ROM). Remarks. In their study of the type material of this species, Uchida & Yamasaki (1989) indicate the female had been incorrectly associated, thus the true female of N. hamata has remained unknown. We offer the following description of female and egg for this species based on our associations from Thai material. Fig. 26. shows details of the head and pronotal color pattern. Female. Forewing length 16 mm. Subgenital plate slightly produced, relatively wide and with a wide, shallow notch; central region of sternum 8 almost hairless (Fig. 28). Vagina long and slender with upturned apex (Fig. 27). Spermathecal stalk slender; spermatheca slender, short, curled and broadly hooked apically; a single accessory gland occurs near the spermathecal apex. Egg. Pear shaped. Length ca. 0.31 mm, width ca. 0.22 mm. Collar sessile, ca. 0.08 mm wide at rim; rim not flanged; sides of collar with two irregular rows of cells; lower row of cells punctate; irregular low ridges extend from cell meshwork onto egg body (Figs. 94‐96). Chorion coarsely punctate throughout; pores surrounded by 4‐6 tiny spikes giving edges, particularly of lid, a spiny appearance.
description: Published as part of Stark, Bill P. & Sivec, Ignac, 2008, New Species And Records Of Neoperla (Plecoptera: Perlidae) From Vietnam, pp. 19-54 in Illiesia 4 (3) on page 29, DOI: 10.5281/zenodo.4758856
description: {"references": ["Jewett, S. G. 1975. Some stoneflies from Bangladesh, India and South- East Asia. Oriental Insects, 9: 127 - 134.", "Uchida, S. & T. Yamasaki. 1989. Some Perlinae (Plecoptera: Perlidae) from the Malay Peninsula and Thailand with the redescription of Neoperla hamata from Assam. Bulletin of the Biogeographical Society of Japan, 44: 135 - 143."]}
Financial factor influence on scaling and memory of trading volume in stock market
Creators: name: Li, Wei
name: Wang, Fengzhong
name: Havlin, Shlomo
name: Stanley, H. Eugene
Publisher: name: arXiv
Year: 2011
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We study the daily trading volume volatility of 17,197 stocks in the U.S. stock markets during the period 1989--2008 and analyze the time return intervals $τ$ between volume volatilities above a given threshold q. For different thresholds q, the probability density function P_q(τ) scales with mean interval as P_q(τ)=^{-1}f(τ/) and the tails of the scaling function can be well approximated by a power-law f(x)~x^{-γ}. We also study the relation between the form of the distribution function P_q(τ) and several financial factors: stock lifetime, market capitalization, volume, and trading value. We find a systematic tendency of P_q(τ) associated with these factors, suggesting a multi-scaling feature in the volume return intervals. We analyze the conditional probability P_q(τ|τ_0) for $τ$ following a certain interval τ_0, and find that P_q(τ|τ_0) depends on τ_0 such that immediately following a short/long return interval a second short/long return interval tends to occur. We also find indications that there is a long-term correlation in the daily volume volatility. We compare our results to those found earlier for price volatility.
description: 17 pages, 6 figures
Observational Comparison of Star Formation in Different Galaxy Types
Creators: name: Grebel, Eva K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Galaxies cover a wide range of masses and star formation histories. In this review, I summarize some of the evolutionary key features of common galaxy types. At the high-mass end, very rapid, efficient early star formation is observed, accompanied by strong enrichment and later quiescence, well-described by downsizing scenarios. In the intermediate-mass regime, early-type galaxies may still show activity in low-mass environments or when being rejuvenated by wet mergers. In late-type galaxies, we find continuous, though variable star formation over a Hubble time. In the dwarf regime, a wide range of properties from bursty activity to quiescence is observed. Generally, stochasticity dominates here, and star formation rates and efficiencies tend to be low. Morphological types and their star formation properties correlate with environment.
description: Invited review to appear in IAU Symposium 270 on "Computational Star Formation". Editors: J. Alves, B.G. Elmegreen, J.M. Girart, and V. Trimble (Cambridge University Press). 12 pages, no figures
Additional file 5 of Upregulation of key genes Eln and Tgfb3 were associated with the severity of cardiac hypertrophy
Creators: name: Zhang, Rui
name: Xu, Xuan
name: Chen, Xi
name: Hao, Chunshu
name: Ji, Zhenjun
name: Zuo, Pengfei
name: Yang, Mingming
name: Ma, Genshan
name: Li, Yongjun
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5.
The REFLEX II galaxy cluster survey: power spectrum analysis
Creators: name: Balaguera-Antolinez, A.
name: Sanchez, Ariel G.
name: Böhringer, H.
name: Collins, C.
name: Guzzo, L.
name: Phleps, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the power spectrum of galaxy clusters measured from the new ROSAT-ESO Flux-Limited X-Ray (REFLEX II) galaxy cluster catalogue. This new sample extends the flux limit of the original REFLEX to $1.8 \times 10^{-12} erg/ s/cm^{2}$, yielding a total of 911 clusters with $\geq 94$ per cent completeness in redshift follow-up. The analysis of the data is improved by creating a set of 100 REFLEX II-like mock galaxy cluster catalogues built from a suite of large volume LCDM N-body simulations (L-BASICC II). The measured power spectrum is in agreement with the predictions from a LCDM cosmological model. The measurements show the expected increase in the amplitude of the power spectrum with increasing X-ray luminosity. On large scales, we show that the shape of the measured power spectrum is compatible with a scale independent bias and provide a model for the amplitude that allows us to connect our measurements with a cosmological model. By implementing a luminosity-dependent power spectrum estimator, we observe that the power spectrum measured from the REFLEX II sample is weakly affected by flux-selection effects. The shape of the measured power spectrum is compatible with a featureless power spectrum on scales $k>0.01\,h/Mpc$ and hence no statistically significant signal of baryonic acoustic oscillations can be detected. We show that the measured REFLEX II power spectrum displays signatures of non-linear evolution.
description: 17 pages, 19 figures, accepted for publication in MNRAS
Theory and experiment testing flux-line-cutting physics
Creators: name: Clem, John R.
name: Weigand, Marcus
name: Durrell, J. H.
name: Campbell, A. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss predictions of five proposed theories for the critical state of type-II superconductors accounting for both flux cutting and flux transport (depinning). The theories predict different behaviours for the ratio $E_y/E_z$ of the transverse and parallel components of the in-plane electric field produced just above the critical current of a type-II superconducting slab as a function of the angle of an in-plane applied magnetic field. We present experimental results measured using an epitaxially grown YBCO thin film favoring one of the five theories: the extended elliptic critical-state model. We conclude that when the current density $\bm J$ is neither parallel nor perpendicular to the local magnetic flux density $\bm B$, both flux cutting and flux transport occur simultaneously when $J$ exceeds the critical current density $J_c$, indicating an intimate relationship between flux cutting and depinning. We also conclude that the dynamical properties of the superconductor when $J$ exceeds $J_c$ depend in detail upon two nonlinear effective resistivities for flux cutting ($ρ_c$) and flux flow ($ρ_f$) and their ratio $r= ρ_c/ρ_f$.
description: 19 pages, 12 figures, submitted to Supercond. Sci. Technol
Small Lorentz violations in quantum gravity: do they lead to unacceptably large effects?
Creators: name: Gambini, Rodolfo
name: Rastgoo, Saeed
name: Pullin, Jorge
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the applicability of the argument of Collins, Pérez, Sudarsky, Urrutia and Vucetich to loop quantum gravity. This argument suggests that Lorentz violations, even ones that only manifest themselves at energies close to the Planck scale, have significant observational consequences at low energies when one considers perturbative quantum field theory and renormalization. We show that non-perturbative treatments like those of loop quantum gravity may generate deviations of Lorentz invariance of a different type than those considered by Collins et al. that do not necessarily imply observational consequences at low energy.
description: 9 pages, 1 figure, Revtex, to appear in Class. Quan. Grav
A cyclical period variation detected in the updated orbital period analysis of TV Columbae
Creators: name: Dai, Zhibin
name: Qian, Shengbang
name: Lajús, Eduardo Fernández
name: Baume, G. L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The two CCD photometries of the intermediate polar TV Columbae are made for obtaining the two updated eclipse timings with high precision. There is an interval time \sim 17yr since the last mid-eclipse time observed in 1991. Thus, the new mid-eclipse times can offer an opportunity to check the previous orbital ephemerides. A calculation indicates that the orbital ephemeris derived by Augusteijn et al. (1994) should be corrected. Based on the proper linear ephemeris (Hellier, 1993), the new orbital period analysis suggests a cyclical period variation in the O-C diagram of TV Columbae. Using Applegate's mechanism to explain the periodic oscillation in O-C diagram, the required energy is larger than that a M0-type star can afford over a complete variation period \sim 31.0(\pm 3.0)yr. Thus, the light travel-time effect indicates that the tertiary component in TV Columbae may be a dwarf with a low mass, which is near the mass lower limit \sim 0.08Msun as long as the inclination of the third body high enough.
description: 10 pages, 5 figures
Ewald methods for inverse power-law interactions in tridimensional and quasi-two dimensional systems
Creators: name: Mazars, Martial
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In this paper, we derive the Ewald method for inverse power-law interactions in quasi-two dimensional systems. The derivation is done by using two different analytical methods. The first uses the Parry's limit, that considers the Ewald methods for quasi-two dimensional systems as a limit of the Ewald methods for tridimensional systems, the second uses Poisson-Jacobi identities for lattice sums. Taking into account the equivalence of both derivations, we obtain a new analytical Fourier transform intregral involving incomplete gamma function. Energies of the generalized restrictive primitive model of electrolytes ($η$-RPM) and of the generalized one component plasma model ($η$-OCP) are given for the tridimensional, quasi-two dimensional and monolayers systems. Few numerical results, using Monte-Carlo simulations, for $η$-RPM and $η$-OCP monolayers systems are reported.
description: to be published in Journal of Physics A: Mathematical and Theoretical (19 pages, 2 figures and 3 tables)
Anderson Localization in Quark-Gluon Plasma
Creators: name: Kovacs, Tamas G.
name: Pittler, Ferenc
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: At low temperature the low end of the QCD Dirac spectrum is well described by chiral random matrix theory. In contrast, at high temperature there is no similar statistical description of the spectrum. We show that at high temperature the lowest part of the spectrum consists of a band of statistically uncorrelated eigenvalues obeying essentially Poisson statistics and the corresponding eigenvectors are extremely localized. Going up in the spectrum the spectral density rapidly increases and the eigenvectors become more and more delocalized. At the same time the spectral statistics gradually crosses over to the bulk statistics expected from the corresponding random matrix ensemble. This phenomenon is reminiscent of Anderson localization in disordered conductors. Our findings are based on staggered Dirac spectra in quenched SU(2) lattice simulations.
description: 11 pages, 8 figures
An Investigation into the Coordination Chemistry of Boratriazine-Based Terpy-Type Ligands
Creators: name: Savard, Jamie
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Coordination Chemistry
Luminescence
Magnetism

description: The rational design of ligand architectures that enables the development of well-defined metallic constructs has long been recognized as an avenue toward controlling and/or tuning the properties of the corresponding material. To date, one of the most widely studied ligand systems is 2,2’;6’,2”-terpyridine, whose tridentate chelating environment allows for coordination to a variety of metal ions with a wide range of geometries. The development of a terpy-like framework which incorporates a boratriazine moiety into the central ring has been recently reported by the Brusso group, namely 2,2-difluoro-4,6-bis(2-pyridyl)-1,3-dihydro-1,3,5,2-triazaborinine (Py2F2BTA) and 2,2-difluoro-4,6-bis(2-4,6-pyrimidinyl)-1,3-dihydro-1,3,5,2-triazaborinine (Pm2F2BTA). These compounds constitute unfused analogues to the extensively studied boron dipyrromethene (bodipy) family of luminophores, which are known for their high thermal resistance, chemical robustness, low photodegradation, and interesting photophysical signatures. While numerous bodipy derivatives have been studied, metal coordination with these compounds remains an intricate property to explore. Thus, the work presented herein represents the first investigations into the coordination chemistry of these novel ligand frameworks. Chapter one serves as an introduction to coordination chemistry, exploring important concepts as they relate to the field; the origin of our boratriazine based ligands is also explored within this chapter. Chapter two aims to describe trends in coordination and reactivity of these ligands with iron and cobalt metal sources of different oxidation states. The third and fourth chapter focuses on the targeted use of azide and thiocyanate ligands, respectively, to promote interesting magnetic interactions in related complexes. In the fifth chapter, luminescent metal complexes synthesized through the use of d10 metals are described. Conclusions and future outlooks are then presented in the final section, chapter six.
Neoperla multispinosa Stark & Sivec 2008, sp. n.
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Neoperla
Neoperla multispinosa

description: Neoperla multispinosa sp. n. (Figs. 45‐50) Material examined. Holotype ♂, 3 ♂ and 1 ♀ paratypes from Vietnam, Vinh Phu, Tam Dao, 800‐ 1100 m, 19 May‐13 June 1995, H. Malicky (PMSL). Adult habitus. Biocellate. Head mostly yellow but interocellar area covered by a small brown spot; basal and second antennal segments pale, flagellum dark brown (Fig. 45). Pronotum brown with indistinct rugosities. Femora pale, tibiae brown, darker brown at knee. Male. Forewing length 11 mm. Tergum 7 process a small parabolic lobe with spiny margin. Tergum 8 with median and sparse lateral patches of sensilla basiconica. Tergum 9 with small median and larger lateral patches of sensilla basiconica; lateral patches on low humps (Fig. 46). Hemitergal processes moderately long and curved or bent laterad at midlength. Aedeagal tube plump and poorly sclerotized except along dorsum; dorsoapical area covered by a conspicuous spiny patch (Fig. 47). Aedeagal sac slightly longer than tube, slender but with three pairs of spiny lobes along ventrolateral surface; sac apex with prominent dorsolateral spines and a ring of smaller terminal spines; much of sac covered on dorsolateral surface by smaller spines (Figs. 47‐48). Female. Forewing length 14 mm. Subgenital plate slightly produced as a small emarginate tab (Fig. 49). Spermathecal stalk short and very slender (Fig. 50); spermatheca sausage shaped, strongly bent and apically hooked. Larva. Unknown. Etymology. The species name refers to the multiple spiny clusters and lobes of the aedeagal tube and sac. Diagnosis. Three pairs of small lobes along the ventral sac margin, a large dorsoapical spiny patch on the tube and the broad, irregular ring of apical sac spines distinguishes males of this species from others in the montivaga group.
description: Published as part of Stark, Bill P. & Sivec, Ignac, 2008, New Species And Records Of Neoperla (Plecoptera: Perlidae) From Vietnam, pp. 19-54 in Illiesia 4 (3) on page 35, DOI: 10.5281/zenodo.4758856
Involvement of regulatory non-coding RNA in motility, biofilm formation, and adaptive antibiotic resistance in Pseudomonas aeruginosa
Creators: name: Taylor, Patrick Kyle
Publisher: name: University of British Columbia
Year: 2014

description: Small, non-coding RNA (sRNA) transcripts are emerging as a major mechanism for regulating translational expression in bacteria. Since the discovery of 6S RNA acting to regulate translation of RNA polymerases in Escherichia coli, our understanding of sRNA regulation of translation has expanded, and sRNAs are now known to have a broad range of functions in bacteria ranging from metabolic regulation to virulence determination. The Gram-negative bacterium Pseudomonas aeruginosa is commonly found in natural microbiomes, and is also an opportunistic pathogen as it causes disease in immunocompromised individuals. P. aeruginosa displays a high level of resistance to numerous clinically relevant antibiotics, and is capable of developing biofilms on multiple surfaces in hospital environments. P. aeruginosa is also capable of swarming which is a complex motility involving rhamnolipid surface whetting agents, flagella and type IV pili. This work investigated the involvement of 32 sRNA species in adaptive resistance to antibiotics, swarming motility, and biofilm formation in P. aeruginosa. Unique expression profiles under conditions of swarming and biofilm formation for 27 previously uncharacterized sRNAs were found. It was also found that the sRNAs prrF1, prrF2 and phrS are involved in swarming motility and/or biofilm formation. Compared to free-swimming, planktonic growth expression of the prrF gene loci was up-regulated 163- and 13-fold under swarming and biofilm conditions, respectively, and mutants lacking the entire locus demonstrated modest decreases in swarming while prrF1 mutants demonstrated increased biofilm formation. A transposon insertion mutant in phrS in P. aeruginosa PA14 wildtype displayed a deficiency in swarming motility and biofilm formation. phrS was also found to be involved in the development of adaptive resistance to polymyxin B by impacting on the translation of a lipid A modification operon. Together this work demonstrates that sRNA regulation plays a critical role in swarming motility, biofilm formation and the development of adaptive resistance in P. aeruginosa.
Status and new operation modes of the versatile VLT/NACO
Creators: name: Girard, Julien H. V.
name: Kasper, Markus
name: Quanz, Sascha P.
name: Kenworthy, Matthew A.
name: Rengaswamy, Sridharan
name: Schödel, Rainer
name: Gallenne, Alexandre
name: Gillessen, Stefan
name: Huerta, Nicolas
name: Kervella, Pierre
name: Kornweibel, Nick
name: Lenzen, Rainer
name: Mérand, Antoine
name: Montagnier, Guillaume
name: O'Neal, Jared
name: Zins, Gérard
name: IOT, the NACO
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: This paper aims at giving an update on the most versatile adaptive optics fed instrument to date, the well known and successful NACO . Although NACO is only scheduled for about two more years at the Very Large Telescope (VLT), it keeps on evolving with additional operation modes bringing original astronomical results. The high contrast imaging community uses it creatively as a test-bench for SPHERE and other second generation planet imagers. A new visible wavefront sensor (WFS) optimized for Laser Guide Star (LGS) operations has been installed and tested, the cube mode is more and more requested for frame selection on bright sources, a seeing enhancer mode (no tip/tilt correction) is now offered to provide full sky coverage and welcome all kind of extragalactic applications, etc. The Instrument Operations Team (IOT) and Paranal engineers are currently working hard at maintaining the instrument overall performances but also at improving them and offering new capabilities, providing the community with a well tuned and original instrument for the remaining time it is being used. The present contribution delivers a non-exhaustive overview of the new modes and experiments that have been carried out in the past months.
description: 10 pages, 7 figures, SPIE 2010 Astronomical Instrumentation Proceeding
PRIMUS: Enhanced Specific Star Formation Rates In Close Galaxy Pairs
Creators: name: Wong, Kenneth C.
name: Blanton, Michael R.
name: Burles, Scott M.
name: Coil, Alison L.
name: Cool, Richard J.
name: Eisenstein, Daniel J.
name: Moustakas, John
name: Zhu, Guangtun
name: Arnouts, Stephane
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Tidal interactions between galaxies can trigger star formation, which contributes to the global star formation rate density of the universe and could be a factor in the transformation of blue, star-forming galaxies to red, quiescent galaxies over cosmic time. We investigate tidally-triggered star formation in isolated close galaxy pairs drawn from the Prism Multi-Object Survey (PRIMUS), a low-dispersion prism redshift survey that has measured ~120,000 robust galaxy redshifts over 9.1 deg^2 out to z ~ 1. We select a sample of galaxies in isolated galaxy pairs at redshifts 0.25 < z < 0.75, with no other objects within a projected separation of 300 h^-1 kpc and dz/(1+z) = 0.01, and compare them to a control sample of isolated galaxies to test for systematic differences in their rest-frame FUV-r and NUV-r colors as a proxy for relative specific SFR. We find that galaxies in r_p < 50 h^-1 kpc pairs have bluer dust-corrected UV-r colors on average than the control galaxies by -0.134 +/- 0.045 magnitudes in FUV-r and -0.075 +/- 0.038 magnitudes in NUV-r, corresponding to a ~15-20% increase in SSFR. This indicates an enhancement in SSFR due to tidal interactions. We also find that this relative enhancement is greater for a subset of r_p < 30 h^-1 kpc pair galaxies, for which the average colors offsets are -0.193 +/- 0.065 magnitudes in FUV-r and -0.159 +/- 0.048 magnitudes in NUV-r, corresponding to a ~25-30% increase in SSFR. We test for evolution in the enhancement of tidally-triggered star formation with redshift across our sample redshift range and find marginal evidence for a decrease in SSFR enhancement from 0.25 < z < 0.5 to 0.5 < z < 0.75. This indicates that a change in enhanced star formation triggered by tidal interactions in low density environments is not a contributor to the decline in the global star formation rate density across this redshift range.
description: Accepted for publication in ApJ, emulateapj format, 12 pages, 9 figures, 2 tables
The origin of dust in high redshift QSOs: the case of SDSS J1148+5251
Creators: name: Valiante, Rosa
name: Schneider, Raffaella
name: Salvadori, Stefania
name: Bianchi, Simone
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a semi-analytical model for the formation and evolution of a high redshift quasar (QSO). We reconstruct a set of hierarchical merger histories of a 10^13 Msun dark matter halo and model the evolution of the corresponding galaxy and of its central super massive black hole. The code GAMETE/QSODUST consistently follows: the black hole assembly via both coalescence with other black holes and gas accretion; the build up and star formation history of the quasar host galaxy, driven by binary mergers and mass accretion; the evolution of gas, stars, metals in the interstellar medium (ISM), accounting for mass exchanges with the external medium (infall and outflow processes); dust formation in Supernova (SN) ejecta and in the stellar atmosphere of Asymptotic Giant Branch (AGB) stars, dust destruction by interstellar shocks and grain growth in molecular clouds; the AGN feedback which powers a galactic-scale wind, self-regulating the black hole growth and eventually halting star formation.We use this model to study the case of SDSS J1148+5251 observed at redshift 6.4, exploring different star formation histories for the QSO host galaxy.
description: 20 pages, 15 figures, accepted for publication in MNRAS
Scale free networks by preferential depletion
Creators: name: Schneider, Christian M.
name: de Arcangelis, Lucilla
name: Herrmann, Hans J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We show that not only preferential attachment but also preferential depletion leads to scale-free networks. The resulting degree distribution exponents is typically less than two (5/3) as opposed to the case of the growth models studied before where the exponents are larger. Our approach applies in particular to biological networks where in fact we find interesting agreement with experimental measurements. We investigate the most important properties characterizing these networks, as the cluster size distribution, the average shortest path and the clustering coefficient.
description: 8 pages, 4 figures
CRAFT-OA - Creating a Robust Accessible Federated Technology for Open Access Sustainability
Creators: name: Cupar, Drahomira
name: Jertec Musap, Ljiljana
name: Celjak, Draženko
name: Stojanovski, Jadranka
Publisher: name: Zenodo
Year: 2023
Subjects: CRAFT-OA
open science
open access
diamond open access
diamond open access journals

description: OA has become an essential model in scholarly publishing, although adoption methods vary depending on the scientific field (STEM vs. SSH) and the business models of publishers. Undoubtedly, the APC model dominates today's OA publishing, which includes charging the author or institution for publishing a paper. Diamond OA model in which publication and usage costs are not charged, has been neglected and invisible in the publishing landscape. The technological infrastructure and funding for Diamond OA are mostly provided through government and institutional support. The CRAFT-OA project aims to consolidate Diamond OA publishing by improving technical and organizational infrastructure, building communities, increasing visibility, and integrating with other data aggregators in a sustainable way.
Comparative population genetic analysis of fungal associates of the mountain pine beetle (Dendroctonus ponderosae)
Creators: name: Farfán, Lina
Publisher: name: University of British Columbia
Year: 2014

description: The mountain pine beetle (MPB), Dendroctonus ponderosae Hopkins, has destroyed over 18 million ha of pine forest in Canada since 1999, the largest insect epidemic in recorded history. Fungal symbionts in the Ophiostomales (Ascomycetes) play an important role in the outbreak by reducing the tree defense response following beetle colonization, making its environment more conducive to the insect development. A better understanding of the population genetics attributes of the fungal associates could be important to elucidate their role and to explain epidemic patterns. We investigated the genetic structure of one of those fungal associates, Leptographium longiclavatum, sampled from 28 locations in western North America using 11 microsatellite markers developed from the genome of its closest relative, Grosmannia clavigera, another fungal symbiont of the MPB. We found that L. longiclavatum has a distinctive genetic population structure, and by using Bayesian clustering inference, we discovered the presence of three clusters that are concordant with geographic origin of the samples. In addition, we observed an apparent North-South pattern of genetic diversity consistent with the chronology of the epidemic. Structure output showed one cluster comprised of individuals from Northern Alberta where the beetle-fungus complex has been recently established, and a second cluster composed of individuals originating along the Rocky Mountains, and a third cluster was from populations in BC. High haplotypic diversity was found throughout the range sampled, a surprising result given that sexual fruiting structures have never been observed for this fungus. Consistent with recent introduction history, the least differentiated populations were located in northern BC and Alberta. We observed a strong correlation in the genetic diversity pattern observed in L. longiclavatum, G. clavigera and D. ponderosae, as shown by a significant correlation in the genetic distance matrices amongst L. longiclavatum, G. clavigera, and D. ponderosae. This correlation and the similar north-south population structure of these interacting organisms suggest a joint population history consistent with the dependence of fungal dispersal on their bark beetle vector. These results can help clarify the roles and close relationships between the beetles and their fungal associates.
New neutrino interactions at large colliders
Creators: name: del Aguila, Francisco
name: Aguilar-Saavedra, Juan Antonio
name: de Blas, Jorge
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We update present bounds on the helicity of the neutrinos produced in muon decay, including e+ e- -> fbar f LEP 2 data. These significantly reduce the limits derived from all the other electroweak precision data. In Standard Model extensions designed to maximize the RH neutrino production in such a decay the neutrino deficit eventually observable in a near detector at a neutrino factory can be of the order of 5 %. Motivated by the current LHC run at 7 TeV, we also update previous work providing discovery limits on see-saw mediators at this centre of mass energy. Lepton triplets with 200 GeV could be discovered with luminosities of 1 - 1.5 fb^-1. Scalar triplets of the same mass might be seen with 0.75 - 3 fb^-1. What makes their search also attractive in the first LHC analyses.
description: Latex 4 pages, 4 eps figures. Contribution to the Proceedings of the 35th International Conference of High Energy Physics - ICHEP2010, Paris, France, July 22-28, 2010
Magnetic field - dependent Labusch parameter in LiFeAs superconductor from Campbell penetration depth
Creators: name: Prommapan, Plengchart
name: Tanatar, Makariy A.
name: Lee, Bumsung
name: Khim, Seunghyun
name: Kim, Kee Hoon
name: Prozorov, Ruslan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A true critical current density, $j_{c}$, as opposite to commonly measured relaxed persistent (Bean) current, $j_{B}$, was extracted from the Campbell penetration depth, $λ_{C}(T,H)$ measured in single crystals of LiFeAs. The effective pinning potential is non-parabolic, which follows from the magnetic field - dependent Labusch parameter $α$. At the equilibrium (upon field - cooling), $α(H)$ is non-monotonic, but it is monotonic at a finite gradient of the vortex density. This behavior leads to a faster magnetic relaxation at the lower fields and provides a natural \emph{dynamic} explanation for the fishtail (second peak) effect. We also find the evidence for strong pinning at the lower fields. The inferred field dependence of the pinning potential is consistent with the evolution from strong pinning, through collective pinning and, eventually, to a disordered vortex lattice. The values of $j_{c}(2\text{K}) \simeq 2\times10^{6}$ A/cm$^{2}$ provide an upper estimate of the current carrying capability of LiFeAs. Overall, vortex behavior of almost isotropic, fully-gapped LiFeAs is very similar to highly anisotropic d-wave cuprate superconductors, the similarity that requires further studies in order to understand unconventional superconductivity in cuprates and pnictides.
A Condensation-Ordering Mechanism in Nanoparticle-Catalyzed Peptide Aggregation
Creators: name: Auer, Stefan
name: Trovato, Antonio
name: Vendruscolo, Michele
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Nanoparticles introduced in living cells are capable of strongly promoting the aggregation of peptides and proteins. We use here molecular dynamics simulations to characterise in detail the process by which nanoparticle surfaces catalyse the self- assembly of peptides into fibrillar structures. The simulation of a system of hundreds of peptides over the millisecond timescale enables us to show that the mechanism of aggregation involves a first phase in which small structurally disordered oligomers assemble onto the nanoparticle and a second phase in which they evolve into highly ordered beta-sheets as their size increases.
An experimental approach on dynamic Occlusal Fingerprint Analysis to simulate use-wear development and localisation on Palaeolithic stone tools
Creators: name: Rausch, Hannah
name: Kullmer, Ottmar
name: Marreiros, João
name: Schunk, Lisa
name: Gneisinger, Walter
name: Calandra, Ivan
Publisher: name: Zenodo
Year: 2023

description: Since the origin of the genus Homo, stone-based technologies were an important component of the toolkit of past humans. Studying the evidence left on stone tools is an important field in archaeology for understanding the evolution of human behaviour. Information about the use of stone tools in the past is encoded in the wear patterns left on the surface of a tool. Use-wear analysis investigates the mechanisms involved in the formation of diagnostic wear traces. Occlusal Fingerprint Analysis (OFA) is a well-established method in dental wear studies to simulate chewing actions and thus to locate and quantify kinematics of dental wear facets (see Kullmer et al. 2009, 2012). In a pilot study, we apply, for the first time, the OFA approach to a set of experimentally produced stone tools. The overarching goal is to build expectation models for where use-wear traces are expected to develop on stone tools based on their morphology and on the action performed. Methods include the use of robots in controlled experiments, 3D modelling and use-wear analysis. In producing expectation models, the results of this study confirm that the OFA method can contribute to differentiating between wear traces from human use and those from post-depositional alterations. Further, the method can be used for answering questions on tool performance because the software produces information regarding the amount of contact between the tool and the worked material.
Streaking and Wigner time delays in photoemission from atoms and surfaces
Creators: name: Zhang, Chang-hua
name: Thumm, Uwe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Streaked photoemission metrology allows the observation of an apparent relative time delay between the detection of photoelectrons from different initial electronic states. This relative delay is obtained by recording the photoelectron yield as a function of the delay between an ionizing ultrashort extended ultraviolet (XUV) pulse and a streaking infrared (IR) pulse. Theoretically, photoemission delays can be defined based on i) the phase shift the photoelectron wavefunction accumulates during the release and propagation of the photoelectron (``Wigner delay") and, alternatively, ii) the streaking trace in the calculated photoemission spectrum (``streaking delay"). We investigate the relation between Wigner and streaking delays in the photoemission from atomic and solid-surface targets. For solid targets and assuming a vanishing IR-skin depth, both Wigner and streaking delays can be interpreted as an average propagation time needed by photoelectrons to reach the surface, while the two delays differ for non-vanishing skin depths. For atomic targets, the difference between Wigner and streaking delays depends on the range of the ionic potential.
description: 9 pages, 12 figures, submitted to Phys. Rev. A
Breakdown of the coherent state path integral: two simple examples
Creators: name: Wilson, Justin H.
name: Galitski, Victor
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We show how the time-continuous coherent state path integral breaks down for both the single-site Bose-Hubbard model and the spin path integral. Specifically, when the Hamiltonian is quadratic in a generator of the algebra used to construct coherent states, the path integral fails to produce correct results following from an operator approach. As suggested by previous authors, we note that the problems do not arise in the time-discretized version of the path integral.
description: 4 pages
Agricultural Commercialization, Rural Transformation and Poverty Reduction: What have We Learned about How to Achieve This?
Creators: name: T. S. Jayne
name: Haggblade, Steven
name: Minot, Nicholas
name: Rashid, Shahid
Publisher: name: Gates Open Research
Year: 2019

description: Agricultural commercialization, rural transformation and poverty reduction: what have we learned about how to achieve this?
Full vectoring optimal power allocation in xDSL channels under per-modem power constraints and spectral mask constraints
Creators: name: Nir, Vincent Le
name: Moonen, Marc
name: Verlinden, Jan
name: Guenach, Mamoun
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In xDSL systems, crosstalk can be separated into two categories, namely in-domain crosstalk and out-of-domain crosstalk. In-domain crosstalk is also refered to as self crosstalk. Out-of-domain crosstalk is crosstalk originating from outside the multi-pair system and is also denoted as external noise (alien crosstalk, radio frequency interference,...). While self crosstalk in itself can easily be canceled by a linear detector like the ZF detector, the presence of external noise requires a more advanced processing. Coordination between transmitters and receivers enables the self crosstalk and the external noise to be mitigated using MIMO signal processing, usually by means of a whitening filter and SVD. In this paper, we investigate the problem of finding the optimal power allocation in MIMO xDSL systems in the presence of self crosstalk and external noise. Optimal Tx/Rx structures and power allocation algorithms will be devised under practical limitations from xDSL systems, namely per-modem total power constraints and/or spectral mask constraints, leading to a generalized SVD-based transmission. Simulation results are given for bonded VDSL2 systems with external noise coming from ADSL2+ or VDSL2 disturbing lines, along with a comparison between algorithms with one-sided signal coordination either only at the transmit side or the receive side.
description: 8 pages, 6 figures