cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anas andium Conover 1941
Creators: name: Castro-Vargas, Fernando
name: Cruz-Mendivelso, Yerson
name: Ortega-Chamorro, Darwin
name: Palacino-Rodríguez, Fredy
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Anseriformes
Anatidae
Anas
Anas andium

description: Anas andium Conover, 1941 Figure 6A New records. Three individuals were inside a flock of Spatula discors in the wetlands of the ESNR. We recorded this species in systematic surveys on 19 December 2018. Identification. This teal species is similar to the female of Spatula discors (Blue-winged Tail), but darker, with green speculum and orange lower secondary covers. Remarks. We did not record any reproductive events. Distribution. Andes of southwestern Venezuela, Colombia, Ecuador, and northern Peru. In Colombia, east of the Andes to Bogotá, between 2,600 and 4,300 m a.s.l.
description: Published as part of Castro-Vargas, Fernando, Cruz-Mendivelso, Yerson, Ortega-Chamorro, Darwin & Palacino-Rodríguez, Fredy, 2020, Birds from northeastern Bogotá Savannah, Cundinamarca, Colombia, pp. 1375-1391 in Check List 16 (5) on page 1384, DOI: 10.15560/16.5.1375
Integrated Dynamical Approach to Relativistic Heavy Ion Collisions
Creators: name: Hirano, Tetsufumi
name: Huovinen, Pasi
name: Murase, Koichi
name: Nara, Yasushi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We review integrated dynamical approaches to describe heavy ion reaction as a whole at ultrarelativistic energies. Since final observables result from all the history of the reaction, it is important to describe all the stages of the reaction to obtain the properties of the quark gluon plasma from experimental data. As an example of these approaches, we develop an integrated dynamical model, which is composed of a fully (3+1) dimensional ideal hydrodynamic model with the state-of-the-art equation of state based on lattice QCD, and subsequent hadronic cascade in the late stage. Initial conditions are obtained employing Monte Carlo versions of the Kharzeev-Levin-Nardi model (MC-KLN) or the Glauber model (MC-Glauber). Using this integrated model, we first simulate relativistic heavy ion collisions at the RHIC and LHC energies starting from conventional smooth initial conditions. We next utilise each Monte Carlo samples of initial conditions on an event-by-event basis and perform event-by-event dynamical simulations to accumulate a large number of minimum bias events. A special attention is paid to performing the flow analysis as in experiments toward consistent comparison of theoretical results with experimental data.
description: v2: 70 pages, 59 figures, two sections on overviews included, conclusion unchanged, version accepted for publication in Progress in Particle and Nuclear Physics
Lesbia nuna Lesson 1832
Creators: name: Castro-Vargas, Fernando
name: Cruz-Mendivelso, Yerson
name: Ortega-Chamorro, Darwin
name: Palacino-Rodríguez, Fredy
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Apodiformes
Trochilidae
Lesbia
Lesbia nuna

description: Lesbia nuna Lesson, 1832 Figure 7A New records. One male and one female sucking flower nectar of D. mutisii and Streptosolen jamesonii (Benth.) Miers in the native forest in ESNR on 20 October 2018. We recorded this species in systematic surveys on 16 December 2018 and on 15 April 2019. Identification. Male bright green male ventrally; tail length approximately twice the length of the body; black helms and their distal half bright green. Females with bright green spots on white ventral region and shorter tail than in males. Remarks. We did not record any reproductive events. The species was rare in our study. Distribution. Colombia, Ecuador, and Peru.
description: Published as part of Castro-Vargas, Fernando, Cruz-Mendivelso, Yerson, Ortega-Chamorro, Darwin & Palacino-Rodríguez, Fredy, 2020, Birds from northeastern Bogotá Savannah, Cundinamarca, Colombia, pp. 1375-1391 in Check List 16 (5) on page 1385, DOI: 10.15560/16.5.1375
Submillimetre observations of X-ray active galactic nuclei in the William Herschel Deep Field
Creators: name: Bielby, R. M.
name: Hill, M. D.
name: Metcalfe, N.
name: Shanks, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the contribution made by active galactic nuclei (AGN) to the high-redshift, luminous, submillimetre (submm) source population using deep (< 2 mJy/beam) Large Apex Bolometer Camera (LABOCA) 870 um observations within the William Herschel Deep Field (WHDF). This submm data complements previously obtained Chandra X-ray data of the field, from which AGN have been identified with the aid of follow-up optical spectra. From the LABOCA data, we detect 11 submm sources (based on a detection threshold of 3.2 sigma) with estimated fluxes of > 3 mJy/beam. Of the 11 identified submm sources, we find that 2 coincide with observed AGN and that, based on their hardness ratios, both of these AGN appear to be heavily obscured. We perform a stacking of the submm data around the AGN, which we group by estimated column density, and find that only the obscured (N_H > 10^22 cm^2) AGN show significant associated submm emission. These observations support the previous findings of Page et al and Hill et al that obscured AGN preferentially show submm emission. Hill et al have argued that, in this case, the contribution to the observed submm emission (and thus the submm background) from AGN heating of the dust in these sources may be higher than previously thought.
description: 10 pages, 2 tables, 11 figures. Accepted by MNRAS
Buteo platypterus Vieillot 1823
Creators: name: Castro-Vargas, Fernando
name: Cruz-Mendivelso, Yerson
name: Ortega-Chamorro, Darwin
name: Palacino-Rodríguez, Fredy
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Accipitriformes
Accipitridae
Buteo
Buteo platypterus

description: Buteo platypterus Vieillot, 1823 Figure 7B, C New records. About 1,500 individuals were recorded in a boreal migration flying above the ESNR and PJDNR on 7 April 2018. The flock included Buteo platypterus and B. swainsoni Bonaparte, 1838. We recorded this species in systematic surveys in November of each year. Identification. Adult and immature individuals show differences in plumage. Adults have dark brown on the dorsum and barred chest. Immatures are similar on dorsum, but the chest is whitish with brown stripes. Remarks. We did not record any reproductive events. This species is a boreal migratory bird. Distribution. USA, Canada, Mexico, Central America, northwestern South America to western Ecuador, Bolivia, and northwestern Brazil.  Elanoides forficatus Linnaeus, 1758 New records. Three individuals flying over PJDNR on 12 June 2016. Identification. The body is a contrast between deep black and white. The flight feathers, tail feet and bill are black. The tail is elongated and forked. Remarks. We did not record any reproductive events. This species is a boreal migratory bird. We consider this species as an isolated record due to its unique record of three individuals. They could be wandering individuals of the subspecies Elanoides forficatus yetapa (Vieillot, 1818 ) resident in Colombia (Ayerbe-Quiñones 2018), being recorded at a time when the migration of birds from the north of the continent was not usual. Distribution. Southeastern USA south through Central America and southern Brazil.
description: Published as part of Castro-Vargas, Fernando, Cruz-Mendivelso, Yerson, Ortega-Chamorro, Darwin & Palacino-Rodríguez, Fredy, 2020, Birds from northeastern Bogotá Savannah, Cundinamarca, Colombia, pp. 1375-1391 in Check List 16 (5) on page 1385, DOI: 10.15560/16.5.1375
description: {"references": ["Ayerbe-Quinones F (2018) Guia ilustrada de la avifauna colombiana. Wildlife Conservation Society, Bogota, 212 pp."]}
Falco peregrinus Tunstall 1771
Creators: name: Castro-Vargas, Fernando
name: Cruz-Mendivelso, Yerson
name: Ortega-Chamorro, Darwin
name: Palacino-Rodríguez, Fredy
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Falconiformes
Falconidae
Falco
Falco peregrinus

description: Falco peregrinus Tunstall, 1771 Figure 7D New records. Lonely individuals and couples have been seen perching and feeding on doves and pigeons in a replica building of the Taj Mahal. We recorded this species systematically between October 2018 and April 2019. Identification. Dorsal region of the body is dark blue– grey, with the crown, nape and broad legs under the eye black. Atrial region, lateral areas and lower parts of the neck are white. Chest and belly in brown are barred, with brown tailed tail, grey blue and greyish white. Head sides, including black ears. Remarks. We did not record any reproductive events. This species is a boreal migratory bird. It is a winter resident scarce in the Bogotá Savannah (ABO 2000). Geographic distribution. Western North America, Central and South America.
description: Published as part of Castro-Vargas, Fernando, Cruz-Mendivelso, Yerson, Ortega-Chamorro, Darwin & Palacino-Rodríguez, Fredy, 2020, Birds from northeastern Bogotá Savannah, Cundinamarca, Colombia, pp. 1375-1391 in Check List 16 (5) on pages 1385-1386, DOI: 10.15560/16.5.1375
description: {"references": ["ABO (Asociacion Bogotana de Ornitologia) (2000) Aves de la Sabana de Bogota. Guia de campo. Quebecor Impreandes, Bogota, 276 pp."]}
Orbital properties of an unusually low-mass sdB star in a close binary system with a white dwarf
Creators: name: Silvotti, R.
name: Østensen, R. H.
name: Bloemen, S.
name: Telting, J. H.
name: Heber, U.
name: Oreiro, R.
name: Reed, M. D.
name: Farris, L. E.
name: O'Toole, S. J.
name: Lanteri, L.
name: Degroote, P.
name: Hu, H.
name: Baran, A. S.
name: Hermes, J. J.
name: Althaus, L. G.
name: Marsh, T. R.
name: Charpinet, S.
name: Li, J.
name: Morris, R. L.
name: Sanderfer, D. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have used 605 days of photometric data from the Kepler spacecraft to study KIC 6614501, a close binary system with an orbital period of 0.15749747(25) days (3.779939 hours), that consists of a low-mass subdwarf B (sdB) star and a white dwarf. As seen in many other similar systems, the gravitational field of the white dwarf produces an ellipsoidal deformation of the sdB which appears in the light curve as a modulation at two times the orbital frequency. The ellipsoidal deformation of the sdB implies that the system has a maximum inclination of ~40 degrees, with i \approx 20 degrees being the most likely. The orbital radial velocity of the sdB star is high enough to produce a Doppler beaming effect with an amplitude of 432 \pm 5 ppm, clearly visible in the folded light curve. The photometric amplitude that we obtain, K1 = 85.8 km/s, is ~12 per cent less than the spectroscopic RV amplitude of 97.2 \pm 2.0 km/s. The discrepancy is due to the photometric contamination from a close object at about 5 arcsec North West of KIC 6614501, which is difficult to remove. The atmospheric parameters of the sdB star, Teff = 23 700 \pm 500 K and log g = 5.70 \pm 0.10, imply that it is a rare object below the Extreme Horizontal Branch (EHB), similar to HD 188112 (Heber et al. 2003). The comparison with different evolutionary tracks suggests a mass between ~0.18 and ~0.25 Msun, too low to sustain core helium burning. If the mass was close to 0.18-0.19 Msun, the star could be already on the final He-core WD cooling track. A higher mass, up to ~0.25 Msun, would be compatible with a He-core WD progenitor undergoing a cooling phase in a H-shell flash loop. A third possibility, with a mass between ~0.32 and ~0.40 Msun, can not be excluded and would imply that the sdB is a "normal" (but with an unusually low mass) EHB star burning He...
description: MNRAS in press (10 pages, 7 figures)
Human Tissue-Resident Memory T Cells Are Defined by Core Transcriptional and Functional Signatures in Lymphoid and Mucosal Sites
Creators: name: Kumar, Brahma Vencel
name: Ma, Wenji
name: Miron, Michelle
name: Granot, Tomer
name: Guyer, Rebecca S.
name: Carpenter, Dustin
name: Senda, Takashi
name: Sun, Xiaoyun
name: Ho, Siu-Hong
name: Lerner, Harvey
name: Friedman, Amy L.
name: Shen, Yufeng
name: Farber, Donna L.
Publisher: name: Columbia University
Year: 2017
Subjects: subject: T cells
subject: Immunology
subject: FOS: Clinical medicine
subject: Nucleotide sequence
subject: Lymphoid tissue
subject: Mucous membrane

description: Tissue-resident memory T cells (TRMs) in mice mediate optimal protective immunity to infection and vaccination, while in humans, the existence and properties of TRMs remain unclear. Here, we use a unique human tissue resource to determine whether human tissue memory T cells constitute a distinct subset in diverse mucosal and lymphoid tissues. We identify a core transcriptional profile within the CD69+ subset of memory CD4+ and CD8+ T cells in lung and spleen that is distinct from that of CD69− TEM cells in tissues and circulation and defines human TRMs based on homology to the transcriptional profile of mouse CD8+ TRMs. Human TRMs in diverse sites exhibit increased expression of adhesion and inhibitory molecules, produce both pro-inflammatory and regulatory cytokines, and have reduced turnover compared with circulating TEM, suggesting unique adaptations for in situ immunity. Together, our results provide a unifying signature for human TRM and a blueprint for designing tissue-targeted immunotherapies.
Hybrid Stars in an SU(3) Parity Doublet Model
Creators: name: Dexheimer, V.
name: Steinheimer, J.
name: Negreiros, R.
name: Schramm, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We apply an extended version of the SU(3) parity model, containing quark degrees of freedom, to study neutron stars. The model successfully reproduces the main thermodynamic features of QCD which allows us to describe the composition of dense matter. Chiral symmetry restoration is realized inside the star and the chiral partners of the baryons appear, their masses becoming degenerate. Furthermore, quark degrees of freedom appear in a transition to a deconfined state. Performing an investigation of the macroscopic properties of neutron stars, we show that observational constraints, like mass and thermal evolution, are satisfied and new predictions can be made.
Gallinula galeata Lichtenstein 1818
Creators: name: Castro-Vargas, Fernando
name: Cruz-Mendivelso, Yerson
name: Ortega-Chamorro, Darwin
name: Palacino-Rodríguez, Fredy
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Gruiformes
Rallidae
Gallinula
Gallinula galeata

description: Gallinula galeata Lichtenstein, 1818 Figure 8E–H New records. Two individuals foraging in the aquatic vegetation, four months after the increase of the open water habitat in the wetlands of the ESNR on 17 June 2016. We recorded this species systematically in all samples since then. Identification. Black chicks with frontal shield and light red beak, and light grey–brown young individuals in the ventral region with grey on the head and neck; body with a lateral white stripe; charcoal grey adults, with side stripe and white tail feathers, red forehead shield and red beak with yellow tip. Remarks. We saw a nest hidden in the vegetations on 11 Mar. 2019. It had five eggs (44.5 mm × 31.7 mm). The building material of the floating nest includes B. laevis and Ludwigia peploides (Kunth) P. H. Raven, 1963 (Floating Primrose-Willow ), and Cenchrus clandestinus (Hochst. ex Chiov.) Morrone. Distribution. Eastern and southern Canada to northern Argentina.
description: Published as part of Castro-Vargas, Fernando, Cruz-Mendivelso, Yerson, Ortega-Chamorro, Darwin & Palacino-Rodríguez, Fredy, 2020, Birds from northeastern Bogotá Savannah, Cundinamarca, Colombia, pp. 1375-1391 in Check List 16 (5) on page 1386, DOI: 10.15560/16.5.1375
Intra-axonal Synthesis of SNAP25 Is Required for the Formation of Presynaptic Terminals
Creators: name: Batista, Andreia Filipa Rodrigues
name: Martinez, Jose C.
name: Hengst, Ulrich
Publisher: name: Columbia University
Year: 2017
Subjects: Medicine
Presynaptic receptors
Proteins--Synthesis
Synapses

description: Localized protein synthesis is a mechanism for developing axons to react acutely and in a spatially restricted manner to extracellular signals. As such, it is important for many aspects of axonal development, but its role in the formation of presynapses remains poorly understood. We found that the induced assembly of presynaptic terminals required local protein synthesis. Newly synthesized proteins were detectable at nascent presynapses within 15 min of inducing synapse formation in isolated axons. The transcript for the t-SNARE protein SNAP25, which is required for the fusion of synaptic vesicles with the plasma membrane, was recruited to presynaptic sites and locally translated. Inhibition of intra-axonal SNAP25 synthesis affected the clustering of SNAP25 and other presynaptic proteins and interfered with the release of synaptic vesicles from presynaptic sites. This study reveals a critical role for the axonal synthesis of SNAP25 in the assembly of presynaptic terminals.
General relativity limit of Horava-Lifshitz gravity with a scalar field in gradient expansion
Creators: name: Gumrukcuoglu, A. Emir
name: Mukohyama, Shinji
name: Wang, Anzhong
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a fully nonlinear study of long wavelength cosmological perturbations within the framework of the projectable Horava-Lifshitz gravity, coupled to a single scalar field. Adopting the gradient expansion technique, we explicitly integrate the dynamical equations up to any order of the expansion, then restrict the integration constants by imposing the momentum constraint. While the gradient expansion relies on the long wavelength approximation, amplitudes of perturbations do not have to be small. When the $λ\to 1$ limit is taken, the obtained nonlinear solutions exhibit a continuous behavior at any order of the gradient expansion, recovering general relativity in the presence of a scalar field and the "dark matter as an integration constant". This is in sharp contrast to the results in the literature based on the "standard" (and naive) perturbative approach where in the same limit, the perturbative expansion of the action breaks down and the scalar graviton mode appears to be strongly coupled. We carry out a detailed analysis on the source of these apparent pathologies and determine that they originate from an improper application of the perturbative approximation in the momentum constraint. We also show that there is a new branch of solutions, valid in the regime where $|λ-1|$ is smaller than the order of perturbations. In the limit $λ\to1$, this new branch allows the theory to be continuously connected to general relativity (plus "dark matter").
description: 21 pages; v2. minor update to match the published version
White matter changes in Alzheimer’s disease: a focus on myelin and oligodendrocytes
Creators: name: Nasrabady, Sara E.
name: Rizvi, Batool
name: Goldman, James E.
name: Brickman, Adam M.
Publisher: name: Columbia University
Year: 2018
Subjects: Alzheimer's disease
Alzheimer's disease--Pathophysiology
Myelin sheath
Oligodendroglia

description: Alzheimer’s disease (AD) is conceptualized as a progressive consequence of two hallmark pathological changes in grey matter: extracellular amyloid plaques and neurofibrillary tangles. However, over the past several years, neuroimaging studies have implicated micro- and macrostructural abnormalities in white matter in the risk and progression of AD, suggesting that in addition to the neuronal pathology characteristic of the disease, white matter degeneration and demyelination may be also important pathophysiological features. Here we review the evidence for white matter abnormalities in AD with a focus on myelin and oligodendrocytes, the only source of myelination in the central nervous system, and discuss the relationship between white matter changes and the hallmarks of Alzheimer’s disease. We review several mechanisms such as ischemia, oxidative stress, excitotoxicity, iron overload, Aβ toxicity and tauopathy, which could affect oligodendrocytes. We conclude that white matter abnormalities, and in particular myelin and oligodendrocytes, could be mechanistically important in AD pathology and could be potential treatment targets.
Quantum dynamics of atomic bright solitons under splitting and re-collision, and implications for interferometry
Creators: name: Martin, A. D.
name: Ruostekoski, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We numerically study the classical and quantum dynamics of an atomic bright soliton in a highly-elongated one-dimensional harmonic trap with a Gaussian barrier. In the regime of the recent experiment by Dyke {\it et al.}, the system realizes a coherent nonlinear soliton beam-splitter and interferometer whose accuracy we analyze. In the case of tighter radial trap confinement and enhanced quantum fluctuations, a split soliton can represent a spin-squeezed, or alternatively, a fragmented condensate with reduced phase-coherence that can be measured by interfering the split soliton by the barrier. We also find large quantum mechanical uncertainties in the soliton's position and momentum due to nonlinear interaction with the barrier.
description: 30 pages, 9 figures. Modified in response to referees' comments, and with additional simulation results
An inhalational antiviral strategy for the potential use of nitric oxide during influenza infection
Creators: name: McMullin, Bevin Brent
Publisher: name: University of British Columbia
Year: 2012

description: Since the discovery in the late 1980’s that the endothelium relaxing factor is nitric oxide (NO) there has been intensive scientific pursuit to understand the many roles of NO in biological systems. NO is a messenger molecule with both paracrine and autocrine functions. NO is produced by phagocytes as part of the immune system as a non-specific antimicrobial which may be effective against Influenza. Influenza is a virus that infects millions of people each year resulting in hundreds of thousands of deaths. While vaccination and antivirals have helped reduce the death toll, their effectiveness is limited because of the rapidly evolving nature of the influenza virus and the development of resistance. The recent 2009 influenza pandemic has highlighted the need for new and novel antivirals. We hypothesize that the direct exposure of influenza viruses to gaseous nitric oxide (gNO) will have an antiviral effect. We also show that it is feasible and safe to deliver inhaled gNO to humans at antiviral concentrations using an intermittent high dose regimen.
Sampling properties of directed networks
Creators: name: Son, Seung-Woo
name: Christensen, Claire
name: Bizhani, Golnoosh
name: Foster, David V.
name: Grassberger, Peter
name: Paczuski, Maya
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: For many real-world networks only a small "sampled" version of the original network may be investigated; those results are then used to draw conclusions about the actual system. Variants of breadth-first search (BFS) sampling, which are based on epidemic processes, are widely used. Although it is well established that BFS sampling fails, in most cases, to capture the IN-component(s) of directed networks, a description of the effects of BFS sampling on other topological properties are all but absent from the literature. To systematically study the effects of sampling biases on directed networks, we compare BFS sampling to random sampling on complete large-scale directed networks. We present new results and a thorough analysis of the topological properties of seven different complete directed networks (prior to sampling), including three versions of Wikipedia, three different sources of sampled World Wide Web data, and an Internet-based social network. We detail the differences that sampling method and coverage can make to the structural properties of sampled versions of these seven networks. Most notably, we find that sampling method and coverage affect both the bow-tie structure, as well as the number and structure of strongly connected components in sampled networks. In addition, at low sampling coverage (i.e. less than 40%), the values of average degree, variance of out-degree, degree auto-correlation, and link reciprocity are overestimated by 30% or more in BFS-sampled networks, and only attain values within 10% of the corresponding values in the complete networks when sampling coverage is in excess of 65%. These results may cause us to rethink what we know about the structure, function, and evolution of real-world directed networks.
description: 21 pages, 11 figures
Towards a precise lattice determination of the leading hadronic contribution to (g-2)_mu
Creators: name: Della Morte, Michele
name: Jäger, Benjamin
name: Jüttner, Andreas
name: Wittig, Hartmut
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report on our computation of the leading hadronic contribution to the anomalous magnetic moment of the muon using two dynamical flavours of non-perturbatively O(a) improved Wilson fermions. The strange quark is introduced in the quenched approximation. Partially twisted boundary conditions are applied to improve the momentum resolution in the relevant integral. Our results, obtained at three different values of the lattice spacing, allow for a preliminary study of discretization effects. We explore a wide range of lattice volumes, namely 2 fm < L < 3 fm, with pion masses from 600 to 280 MeV and discuss different chiral extrapolations to the physical point. We observe a non-trivial dependence of a_mu(HLO) on m_pi especially for small pion masses. The final result, a_mu(HLO)=618(64)*10^(-10), is obtained by considering only the quark connected contribution to the vacuum polarization. We present a detailed analysis of systematic errors and discuss how they can be reduced in future simulations.
description: Version accepted for publication in JHEP. Discussions extended in sections 3.1 and 3.2, results unchanged. 19 pages, 7 figures, 3 tables
Disponibili 24/7: nuove dimensioni della qualit� del lavoro e del benessere sociale. Uno studio comparato tra lavoro pubblico e privato: disuguaglianze, irresponsabilit� e possibili soluzioni.
Creators: name: CAPOZZI, CECILIA
Publisher: name: Universit� degli studi di Genova
Year: 2021

description: This study aims to identify the consequences on individual and collective well-being of the loss of control over time management, as a result of the processes of flexibilisation of work and social acceleration that characterize contemporary society. The dissolution of the boundaries between work and private life is observed to proliferate latently in every context of social and professional life, but now appears institutionalized in some sectors of the 24/7 economy where just-in-time availability is increasingly required.

In order to distinguish more clearly the contours of the phenomenon, it was decided to limit the survey to a sector of the 24/7 economy, which lends itself to comparisons between work organizations that are still Fordist and organizations hyper-flexible. The choice therefore fell on the profession of "Bus Driver", which can be carried out in the "solid" context of Local Public Transport, still structured, guaranteeing and strongly unionized, or in the "liquid" organizations of the companies of ?Rental with Driver? which are more exposed to an unpredictable demand and are characterized by a strong flexibility, both in the use of atypical contractual forms, and in the management of working hours, often communicated overnight.

The empirical part involved the analysis of secondary data available in the databases of Job Centers, for the study of the employment flexibility contracts, and the conduct of narrative interviews to investigate the impacts of flexibility of work performance on the well-being of workers. The dimensions investigated were identified by analyzing human needs theories, poverty studies, and institutional systems for detecting well-being, such as BES project by Istat and Cnel.

The survey confirmed the greater flexibility in the private transport sector and highlighted how the loss of power over time management inhibits the ability to satisfy basic human needs, such as the need for relationality and social participation, configuring itself as a new form of immaterial poverty awaiting recognition. The analysis of personal experiences, moreover, underlined the role of the expressive orientation to work in tolerating more flexible situations and revealed a "systemic social irresponsibility" which contributes to creating and reproducing inequalities regarding the quality of work and the quality of people's lives.
Rolling element bearing condition monitoring using acoustic emission technique and advanced signal processing
Creators: name: Hemmati, Farzad
Publisher: name: University of British Columbia
Year: 2012

description: Acoustic emission (AE) signals generated from defects in rolling element bearings are investigated using simulated defects and experimental measurements in this thesis. Rolling element bearings are crucial parts of many machines and there has been an increasing demand to find effective and reliable health monitoring technique and advanced signal processing to detect and diagnose the size and location of incipient defects. Condition monitoring of rolling element bearings, comprises four main stages which are, statistical analysis, fault diagnostics, defect size calculation, and prognostics. In this thesis the effect of defect size, operating speed, and loading conditions on statistical parameters of AE signals, using design of experiment method (DOE), have been investigated to select the most sensitive parameters for diagnosing incipient faults and defect growth on rolling element bearings. A novel signal processing algorithm is designed to diagnose localized defects on rolling element bearings components under different operating speeds, loadings, and defect sizes. The algorithm is based on optimizing the ratio of Kurtosis and Shannon entropy to obtain the optimal band pass filter utilizing wavelet packet transform (WPT) and envelope detection. Results show the superiority of the developed algorithm and its effectiveness in extracting bearing characteristic frequencies from the raw acoustic emission signals masked by background noise under different operating conditions. To experimentally measure the defect size on rolling element bearings using acoustic emission technique, the proposed method along with spectrum of squared Hilbert transform are performed under different rotating speeds, loading conditions, and defect sizes to measure the time difference between the double AE impulses. Measurement results show the power of the proposed method for experimentally measuring size of different fault shapes using acoustic emission signals. Fatigue life estimation of rolling element bearing has also been investigated utilizing defect size measurements combined with an adaptive algorithm. Experimental results show the effectiveness of recursive least square algorithm for predicting the future defect size on the outer race.
title: DEPRECATED: Music as complex emergent behaviour : an approach to interactive music systems
Creators: name: Beyls, Peter F. E.
Publisher: name: University of Plymouth
Year: 2009

description: Access to the full-text thesis is no longer available at the author's request, due to 3rd party copyright restrictions. Access removed on 28.11.2016 by CS (TIS).
description: Metadata merged with duplicate record (http://hdl.handle.net/10026.1/770) on 20.12.2016 by CS (TIS).
description: This is a digitised version of a thesis that was deposited in the University Library. If you are the author please contact PEARL Admin (pearladmin@plymouth.ac.uk) to discuss options.
description: This thesis suggests a new model of human-machine interaction in the domain of non-idiomatic musical improvisation. Musical results are viewed as emergent phenomena issuing from complex internal systems behaviour in relation to input from a single human performer. We investigate the prospect of rewarding interaction whereby a system modifies itself in coherent though non-trivial ways as a result of exposure to a human interactor. In addition, we explore whether such interactions can be sustained over extended time spans. These objectives translate into four criteria for evaluation; maximisation of human influence, blending of human and machine influence in the creation of machine responses, the maintenance of independent machine motivations in order to support machine autonomy and finally, a combination of global emergent behaviour and variable behaviour in the long run. Our implementation is heavily inspired by ideas and engineering approaches from the discipline of Artificial Life. However, we also address a collection of representative existing systems from the field of interactive composing, some of which are implemented using techniques of conventional Artificial Intelligence. All systems serve as a contextual background and comparative framework helping the assessment of the work reported here. This thesis advocates a networked model incorporating functionality for listening, playing and the synthesis of machine motivations. The latter incorporate dynamic relationships instructing the machine to either integrate with a musical context suggested by the human performer or, in contrast, perform as an individual musical character irrespective of context. Techniques of evolutionary computing are used to optimise system components over time. Evolution proceeds based on an implicit fitness measure; the melodic distance between consecutive musical statements made by human and machine in relation to the currently prevailing machine motivation. A substantial number of systematic experiments reveal complex emergent behaviour inside and between the various systems modules. Music scores document how global systems behaviour is rendered into actual musical output. The concluding chapter offers evidence of how the research criteria were accomplished and proposes recommendations for future research.
Reconstruction of $f(T)$ gravity: Rip cosmology, finite-time future singularities and thermodynamics
Creators: name: Bamba, Kazuharu
name: Myrzakulov, Ratbay
name: Nojiri, Shin'ichi
name: Odintsov, Sergei D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We demonstrate that there appear finite-time future singularities in $f(T)$ gravity with $T$ being the torsion scalar. We reconstruct a model of $f(T)$ gravity with realizing the finite-time future singularities. In addition, it is explicitly shown that a power-low type correction term $T^β$ ($β>1$) such as a $T^2$ term can remove the finite-time future singularities in $f(T)$ gravity. Moreover, we study $f(T)$ models with realizing inflation in the early universe, the $Λ$CDM model, Little Rip cosmology and Pseudo-Rip cosmology. It is demonstrated that the disintegration of bound structures for Little Rip and Pseudo-Rip cosmologies occurs in the same way as in gravity with corresponding dark energy fluid. We also discuss that the time-dependent matter instability in the star collapse can occur in $f(T)$ gravity. Furthermore, we explore thermodynamics in $f(T)$ gravity and illustrate that the second law of thermodynamics can be satisfied around the finite-time future singularities for the universe with the temperature inside the horizon being the same as that of the apparent horizon.
description: 38 pages, no figure, version accepted for publication in Physical Review D
Dynamic Lateralization of Pupil Dilation Evoked by Locus Coeruleus Activation Results from Sympathetic, Not Parasympathetic, Contributions
Creators: name: Liu, Yang
name: Rodenkirch, Charles August
name: Moskowitz, Nicole
name: Schriver, Brian James
name: Wang, Qi
Publisher: name: Columbia University
Year: 2017
Subjects: Biomedical engineering
Locus coeruleus
Parasympathetic nervous system
Sympathetic nervous system
Pupillometry

description: Pupil size is collectively controlled by the sympathetic dilator and parasympathetic sphincter muscles. Locus coeruleus (LC) activation has been shown to evoke pupil dilation, but how the sympathetic and parasympathetic pathways contribute to this dilation remains unknown. We examined pupil dilation elicited by LC activation in lightly anesthetized rats. Unilateral LC activation evoked bilateral but lateralized pupil dilation; i.e., the ipsilateral dilation was significantly larger than the contralateral dilation. Surgically blocking the ipsilateral, but not contralateral, sympathetic pathway significantly reduced lateralization, suggesting that lateralization is mainly due to sympathetic contribution. Moreover, we found that sympathetic, but not parasympathetic, contribution is correlated with LC activation frequency. Together, our results unveil the frequency-dependent contributions of the sympathetic and parasympathetic pathways to LC activation-evoked pupil dilation and suggest that lateralization in task-evoked pupil dilations may be used as a biomarker for autonomic tone.
Hadronic molecules with both open charm and bottom
Creators: name: Sun, Zhi-Feng
name: Liu, Xiang
name: Nielsen, Marina
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With the one-boson-exchange model, we study the interaction between the S-wave $D^{(*)}/D^{(*)}_s$ meson and S-wave $B^{(*)}/B^{(*)}_s$ meson considering the S-D mixing effect. Our calculation indicates that there may exist the $B_c$-like molecular states. We estimate their masses and list the possible decay modes of these $B_c$-like molecular states, which may be useful to the future experimental search.
description: 7 pages, 2 figures, 5 tables. Typos corrected. Version published in Phys. Rev. D
Actitis macularius Linnaeus 1766
Creators: name: Castro-Vargas, Fernando
name: Cruz-Mendivelso, Yerson
name: Ortega-Chamorro, Darwin
name: Palacino-Rodríguez, Fredy
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Charadriiformes
Scolopacidae
Actitis
Actitis macularius

description: Actitis macularius Linnaeus, 1766 Figure 9E New records. Individuals with breeding or reproductive plumage, as well as individuals with winter plumage, have been seen. We recorded this species systematically in all samples during most of the year from August to May. Identification. It is the smallest species of sandpipers in the Bogotá Savannah. Dorsal region of brown colour, with the coverts barred. Eye list and chest sides are brown, whitish eyebrows. White ventral region (non-reproductive) and mottled (reproductive). Legs are yellow. Remarks. We did not record any reproductive events. This species is a boreal migratory bird. Distribution. From Canada to Chile and northern Argentina.
description: Published as part of Castro-Vargas, Fernando, Cruz-Mendivelso, Yerson, Ortega-Chamorro, Darwin & Palacino-Rodríguez, Fredy, 2020, Birds from northeastern Bogotá Savannah, Cundinamarca, Colombia, pp. 1375-1391 in Check List 16 (5) on page 1387, DOI: 10.15560/16.5.1375
R code to: de Gier, W. & Fransen, C.H.J.M. (2023) Polka-dotted treasures: revising a clade of ascidian- and bivalve-associated shrimps (Caridea: Palaemonidae). Contributions to Zoology, 92(3): 179-282.
Creators: name: de Gier, Werner
Publisher: name: Zenodo
Year: 2024

description: Unsorted R-code and supplemental files for chapter 5 of the PhD thesis of Werner de Gier, published as:de Gier, W. & Fransen, C.H.J.M. (2023) Polka-dotted treasures: revising a clade of ascidian- and bivalve-associated shrimps (Caridea: Palaemonidae). Contributions to Zoology, 92(3): 179-282.
Cosmological phase space analysis of the F (X) - V (phi) scalar field and bouncing solutions
Creators: name: De-Santiago, Josue
name: Cervantes-Cota, Jorge L.
name: Wands, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyze the dynamical system defined by a universe filled with a barotropic fluid plus a scalar field with modified kinetic term of the form L = F (X) - V (phi). After a suitable choice of variables that allows us to study the phase space of the system we obtain the critical points and their stability. We find that they reduce to the ones defined for the canonical case when F (X) = X. We also study the field energy conditions to have a nonsingular bounce.
description: 13 pages, 11 figures, v3 appendix added in order to match the published version in Phys. Rev. D
Phimosus infuscatus Lichtenstein 1823
Creators: name: Castro-Vargas, Fernando
name: Cruz-Mendivelso, Yerson
name: Ortega-Chamorro, Darwin
name: Palacino-Rodríguez, Fredy
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Pelecaniformes
Threskiornithidae
Phimosus
Phimosus infuscatus

description: Phimosus infuscatus Lichtenstein, 1823 Figure 9G, H New records. One individual flying over a patch of aquatic vegetation composed mainly of T. latifolia in the ESNR on 06 June 2018. In its beak the bird carried sticks as a possible nest building material. We recorded this species systematically on 17 Feb. 2018, 14 Aug. 2018, 15 January 2019, 15 Feb. 2019, 15 Mar. 2019 and 17 April 2019. Identification. Red face with pink-coloured beak with bare facial skin, reddish legs and blackish greenish plumage. Remarks. The species is abundant in other wetlands in the region, but in our study area only between one to three individuals were recorded. Distribution. Northern Colombia east through the Venezuelan llanos, eastern Brazil west to Bolivia and south to central Argentina.
description: Published as part of Castro-Vargas, Fernando, Cruz-Mendivelso, Yerson, Ortega-Chamorro, Darwin & Palacino-Rodríguez, Fredy, 2020, Birds from northeastern Bogotá Savannah, Cundinamarca, Colombia, pp. 1375-1391 in Check List 16 (5) on page 1388, DOI: 10.15560/16.5.1375
Independent functions of DNMT1 and USP7 at replication foci
Creators: name: Yarychkivska, Olga
name: Tavana, Omid
name: Gu, Wei
name: Bestor, Timothy H.
Publisher: name: Columbia University
Year: 2018
Subjects: Proteins--Stability
Methyltransferases
DNA replication

description: Background: It has been reported that USP7 (ubiquitin-specific protease 7) prevents ubiquitylation and degradation of DNA methyltransferase 1 (DNMT1) by direct binding of USP7 to the glycine-lysine (GK) repeats that join the N-terminal regulatory domain of DNMT1 to the C-terminal methyltransferase domain. The USP7-DNMT1 interaction was reported to be mediated by acetylation of lysine residues within the (GK) repeats.

Results: We found that DNMT1 is present at normal levels in mouse and human cells that contain undetectable levels of USP7. Substitution of the (GK) repeats by (GQ) repeats prevents lysine acetylation but does not affect the stability of DNMT1 or the ability of the mutant protein to restore genomic methylation levels when expressed in Dnmt1-null ES cells. Furthermore, both USP7 and PCNA are recruited to sites of DNA replication independently of the presence of DNMT1, and there is no evidence that DNMT1 is degraded in cycling cells after S phase.

Conclusions: Multiple lines of evidence indicate that homeostasis of DNMT1 in somatic cells is controlled primarily at the level of transcription and that interaction of USP7 with the (GK) repeats of DNMT1 is unlikely to play a major role in the stabilization of DNMT1 protein.
Study of the performance of a large scale water-Cherenkov detector (MEMPHYS)
Creators: name: Agostino, L.
name: Buizza-Avanzini, M.
name: Dracos, M.
name: Duchesneau, D.
name: Marafini, M.
name: Mezzetto, M.
name: Mosca, L.
name: Patzak, T.
name: Tonazzo, A.
name: Vassilopoulos, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: MEMPHYS (MEgaton Mass PHYSics) is a proposed large-scale water Cherenkov experiment to be performed deep underground. It is dedicated to nucleon decay searches, neutrinos from supernovae, solar and atmospheric neutrinos, as well as neutrinos from a future Super-Beam or Beta-Beam to measure the CP violating phase in the leptonic sector and the mass hierarchy. A full simulation of the detector has been performed to evaluate its performance for beam physics. The results are given in terms of "Migration Matrices" of reconstructed versus true neutrino energy, taking into account all the experimental effects.
description: Updated after JCAP's referee's comments
Critical gravity in the Chern-Simons modified gravity
Creators: name: Moon, Taeyoon
name: Myung, Yun Soo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perform the perturbation analysis of the Chern-Simons modified gravity around the AdS$_4$ spacetimes (its curvature radius $\ell$) to obtain the critical gravity. In general, we could not obtain an explicit form of perturbed Einstein equation which shows a massive graviton propagation clearly, but for the Kerr-Schild perturbation and Chern-Simons coupling $θ=kx/y$, we find the AdS wave as a single massive solution to the perturbed Einstein equation. Its mass squared is given by $M^2=[-9+(2\ell^2/k-1)^2]/4\ell^2$. At the critical point of $M^2=0(k=\ell^2/2)$, the solution takes the log-form and the linearized excitation energies vanish.
description: 13 pages, 1 figure, version to appear in EPJC
Facing HIV infection and unintended pregnancy: Rakai, Uganda, 2001–2013
Creators: name: Grilo, Stephanie A.
name: Song, Xiaoyu
name: Lutalo, Tom
name: Mullinax, Margo
name: Mathur, Sanyukta
name: Santelli, John S.
Publisher: name: Columbia University
Year: 2018
Subjects: Unwanted pregnancy
HIV infections
AIDS (Disease)

description: Background: Unintended pregnancy is a persistent and global issue with consequences for the health and well-being of mothers and babies. The aim of this paper is to examine unintended pregnancy over time in the context of substantial human immunodeficiency virus (HIV) prevalence and increasing access to anti-retro viral therapy (ART).

Method: Data are from the Rakai Community Cohort Study (RCCS) – a cohort of communities with 10,000–12,000 adults, ages 15–49, in Rakai District, Uganda. We examined prevalence of current pregnancies over time, intended pregnancy, and unintended pregnancies (unwanted, mistimed, ambivalent). We then examined risk factors for the different categories of unintended pregnancy among women who were currently pregnant. The full sample included 32,205 observations over 13 years.

Results: The prevalence of mistimed pregnancy and unwanted pregnancy both decreased significantly over time (p