cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Essays on factor misallocation
Creators: name: Pulido Pescador, José
Publisher: name: University of British Columbia
Year: 2018

description: This thesis studies different implications of micro-level factor misallocation across heterogeneous agents. It consists of three chapters. The first chapter examines the impact of firm-level factor misallocation on an open economy’s comparative advantage. After providing empirical evidence on how Colombian metrics of firm-level misallocation are related to measures of its revealed comparative advantage, I explore the general equilibrium effects of such misallocation and its impact on industries' export capabilities. I compute a counterfactual equilibrium in which the misallocation is removed in Colombia. The reallocation of factors leads to an important change in the country's industrial structure and a rise in the exports-to-GDP ratio of 18 p.p. This industrial composition effect is absent in the workhorse models of firm-level factor misallocation under closed economies. Based on a co-authored paper with Tomasz Święcki, the second chapter studies the origin of the income gaps between agricultural and non-agricultural workers in developing countries. We use Indonesian data to document a robust premium for workers who move out of agriculture and a loss for those who move into agriculture, even if they do not migrate. We argue that to generate simultaneously these within-worker premia and the main moments of the joint sector-income distribution over time, self-selection needs to take place under barriers to sectoral mobility that misallocate workers across sectors. We find that removing such barriers prompt 30% of the workforce to reallocate and aggregate output to increase by 17%. The third chapter extends the standard model of firm-level factor misallocation in a closed economy in two dimensions. First, I introduce idiosyncratic demand shocks. This allows me to evaluate whether metrics of misallocation predict plants' survival, a test used to claim that misallocation metrics are empirically swamped by demand shocks. I argue that unconditional estimates in this test are biased in the presence of firms' selection, which would explain the puzzling empirical findings. Second, I compute the TFP gains of removing misallocation both within and across industries. I quantify the importance of inter-industry misallocation and explore its potential role in explaining TFP gaps across countries.
SDSS J0926+3624: The shortest period eclipsing binary star
Creators: name: Copperwheat, C. M.
name: Marsh, T. R.
name: Littlefair, S. P.
name: Dhillon, V. S.
name: Ramsay, G.
name: Drake, A. J.
name: Gaensicke, B. T.
name: Groot, P. J.
name: Hakala, P.
name: Koester, D.
name: Nelemans, G.
name: Roelofs, G.
name: Southworth, J.
name: Steeghs, D.
name: Tulloch, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: With orbital periods of the order of tens of minutes or less, the AM Canum Venaticorum stars are ultracompact, hydrogen deficient binaries with the shortest periods of any binary subclass, and are expected to be among the strongest gravitational wave sources in the sky. To date, the only known eclipsing source of this type is the P = 28 min binary SDSS J0926+3624. We present multiband, high time resolution light curves of this system, collected with WHT/ULTRACAM in 2006 and 2009. We supplement these data with additional observations made with LT/RISE, XMM_Newton and the Catalina Real-Time Transient Survey. From light curve models we determine the mass ratio to be q = M2 / M1 = 0.041 +/- 0.002 and the inclination to be 82.6 +/- 0.3 deg. We calculate the mass of the primary white dwarf to be 0.85 +/- 0.04 solar masses and the donor to be 0.035 +/- 0.003 solar masses, implying a partially degenerate state for this component. We observe superhump variations that are characteristic of an elliptical, precessing accretion disc. Our determination of the superhump period excess is in agreement with the established relationship between this parameter and the mass ratio, and is the most precise calibration of this relationship at low q. We also observe a quasi-periodic oscillation in the 2006 data, and we examine the outbursting behaviour of the system over a 4.5 year period.
description: Accepted for publication in MNRAS. 19 pages, including 15 figures and 6 tables. This version has been revised to include a missing reference at the end of Section 3.4.2
Science Update: Seagrass Meadows - Forests Under the Sea
Creators: name: Estuary Program, Narragansett Bay
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310305
subject: Marine and estuarine ecology (incl. marine ichthyology)
classificationCode: 370801
subject: Biological oceanography
classificationCode: 410401
subject: Conservation and biodiversity
classificationCode: 410402
subject: Environmental assessment and monitoring
classificationCode: 410404
subject: Environmental management
classificationCode: 410406
subject: Natural resource management
classificationCode: 410407
subject: Wildlife and habitat management

description: PurposeThis science update presents an analysis of seagrass extent change in NBEP’s study areas – Narragansett Bay, Little Narragansett Bay and the Coastal Salt Ponds. This reports contains data from 2006 through 2021 for Narragansett Bay and updates the information shared in the 2017 State of Narragansett Bay and Its Watershed. This is the first time NBEP is presenting seagrass extent change for the Little Narragansett Bay and the Coastal Salt Ponds and focuses on the complete datasets available from 2009 through 2021. The purpose of these documents is to inform our audience on seagrass acreage change in NBEP’s study areas, and to identify areas for further research. NBEP hopes that this update stimulates discussion among our partners and seagrass experts. The audience for this piece is anyone who is interested in seagrass extent, particularly environmental managers, members of community outreach groups, and the interested public.AcknowledgementsMuch of this update is based on the Narragansett Bay Estuary Program’s State of Narragansett Bay and Its Watershed, a huge effort by over 60 partners to describe the status and trends of Narragansett Bay. The current staff and partners wish to thank former staff and partners for their hard work creating the solid foundation on which we stand. Cover photo is a still image of seagrass from an underwater video captured by Bryan Oakley (Eastern Connecticut State University) and the RI Eelgrass Taskforce in Little Narragansett Bay during the 2021 Seagrass Survey.FundingDevelopment of this document was funded by agreements CE00A00967 awarded by the EPA to Roger Williams University. Although the information in this document has been funded by the EPA, it has not undergone the EPA’s publications review process and therefore, may not reflect the views of EPA and no official endorsement is inferred. The viewpoints expressed do not necessarily represent those of Roger Williams University or EPA. Mention of trade names, commercial products, or causes do not constitute endorsement or recommendation for use.UpdateFiles updated 2023 December 8 to reflect additional partner review.
Contribution of interband effects caused by long-wavelength transverse optical phonons to electron-phonon coupling in doped polar insulators
Creators: name: Pishtshev, Aleksandr
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We estimate the contribution of the long-wavelength el-TO-ph interaction and discuss the effect it has on electron pairing in doped polar systems like SrTiO3 and PbTe. The analytical and numerical results presented in the study indicate that the el-TO-ph interaction tends to contribute little to the total strength of electron-phonon coupling in these and related materials. To explain this fact we consider possible reasons why the effect of the polar long-wavelength transverse optical phonons on the coupling constant "lambda" is far less than one might suppose.
description: 5 pages, 3 tables
Hircinia undetermined
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Dictyoceratida
Irciniidae
Hircinia
Hircinia undetermined

description: Hircinia sp. Trois morceaux massifs, indéterminables.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on page 482, DOI: 10.5962/bhl.part.35507
Mechanics and kinetics in the Friedmann-Lemaitre-Robertson-Walker space-times
Creators: name: Kelner, S. R.
name: Prosekin, A. Yu.
name: Aharonian, F. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using the standard canonical formalism, the equations of mechanics and kinetics in the Friedmann-Lemaitre-Robertson-Walker (FLRW) space-times in Cartesian coordinates have been obtained. The transformation law of the generalized momentum under the shift of the origin of the coordinate system has been found, and the form invariance of the Hamiltonian function relative to the shift transformation has been proved. The general solution of the collisionless Boltzmann equation has been found. In the case of the homogeneous distribution the solutions of the kinetic equation for several simple, but important for applications, cases have been obtained.
Science Update: Seagrass Meadows - Forests Under the Sea
Creators: name: Estuary Program, Narragansett Bay
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310305
subject: Marine and estuarine ecology (incl. marine ichthyology)
classificationCode: 370801
subject: Biological oceanography
classificationCode: 410401
subject: Conservation and biodiversity
classificationCode: 410402
subject: Environmental assessment and monitoring
classificationCode: 410404
subject: Environmental management
classificationCode: 410406
subject: Natural resource management
classificationCode: 410407
subject: Wildlife and habitat management

description: PurposeThis science update presents an analysis of seagrass extent change in NBEP’s study areas – Narragansett Bay, Little Narragansett Bay and the Coastal Salt Ponds. This reports contains data from 2006 through 2021 for Narragansett Bay and updates the information shared in the 2017 State of Narragansett Bay and Its Watershed. This is the first time NBEP is presenting seagrass extent change for the Little Narragansett Bay and the Coastal Salt Ponds and focuses on the complete datasets available from 2009 through 2021. The purpose of these documents is to inform our audience on seagrass acreage change in NBEP’s study areas, and to identify areas for further research. NBEP hopes that this update stimulates discussion among our partners and seagrass experts. The audience for this piece is anyone who is interested in seagrass extent, particularly environmental managers, members of community outreach groups, and the interested public.AcknowledgementsMuch of this update is based on the Narragansett Bay Estuary Program’s State of Narragansett Bay and Its Watershed, a huge effort by over 60 partners to describe the status and trends of Narragansett Bay. The current staff and partners wish to thank former staff and partners for their hard work creating the solid foundation on which we stand. Cover photo is a still image of seagrass from an underwater video captured by Bryan Oakley (Eastern Connecticut State University) and the RI Eelgrass Taskforce in Little Narragansett Bay during the 2021 Seagrass Survey.FundingDevelopment of this document was funded by agreements CE00A00967 awarded by the EPA to Roger Williams University. Although the information in this document has been funded by the EPA, it has not undergone the EPA’s publications review process and therefore, may not reflect the views of EPA and no official endorsement is inferred. The viewpoints expressed do not necessarily represent those of Roger Williams University or EPA. Mention of trade names, commercial products, or causes do not constitute endorsement or recommendation for use.
title: Надежность механических систем
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: В учебнике рассмотрены основные аспекты надежности механических систем портовых подъемно-транспортных машин, даны основные подходы и примеры оценки надежности восстанавливаемых и невосстанавливаемых узлов. Освещены вопросы физики отказов отдельных деталей и невосстанавливаемых систем и меры по их предупреждению. Изложены основы надежности систем, включая принципы схемной надежности и построения дерева отказов, описан процесс оценки ресурса деталей и узлов без учета и с учетом эксплуатационных повреждений. Представлены результаты проведенных автором исследований и примеры расчетов ресурса деталей и узлов портовых подъемно-транспортных машин. Даны основные положения риск-анализа, кратко освещены методы технической диагностики. Подготовлен с учетом требований Федерального государственного образовательного стандарта высшего образования. Учебник предназначен для студентов, обучающихся по укрупненной группе специальностей и направлений подготовки 23.00.00 «Техника и технологии наземного транспорта», изучающих дисциплину «Надежность механических систем», направлению подготовки 26.03.03 «Водные пути, порты и гидротехнические сооружения» (профиль «Проектирование портов и терминалов»), изучающих дисциплину «Основы риск ориентированных технологий в проектировании портов и транспортных терминалов» и направлению подготовки 20.03.01 «Техносферная безопасность (профиль «Безопасность жизнедеятельности в техносфере»), изучающих дисциплину «Надежность технических систем и техногенный риск»». Издание может быть использовано инженерно-техническими работниками предприятий, проектирующими и эксплуатирующими подъемно-транспортную технику.
Dysideopsis palmata Topsent 1896, n. sp.
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Dictyoceratida
Thorectidae
Dysideopsis
Dysideopsis palmata

description: Dysideopsis palmata n. sp. PI. XX, fig. 25. Éponge dressée, aplatie, mince, découpée sur son bord supé- rieur en digitations obtuses, comprimées, inégales. Surface couverte de très petits conules serrés, lisse dans les intervalles. Couleur blanche. Consistance ferme, souple, un peu élastique. Orifices invisibles. L'unique spécimen recueilli, incomplet par le bas, est un peu enroulé sur lui-même; il est large de 30 mm. à la base et se découpe vers le haut en cinq digitations plates, obtuses, longues de 3 à 15 mm., larges de 2 à 6 mm. Son épaisseur, partout la même, est seulement de 1 mm, 5. On ne voit d'oscules ni sur ses bords, ni sur ses deux faces. Les pores eux-mêmes, de 30 à 50 «a de diamètre, restent invisibles à l'oeil nu. Les conules, très nombreux et répandus sur toute la surface, ne dépassent pas mm mm,2 de hauteur; ils sont distants les uns des autres de,5. L'ectosome est couvert de corps étrangers, grains de sable et spicules divers. Les fibres sont blanches, cassantes, épaisses de 50 à 200 p., réticulées, et chargées partout de corps étrangers, autour desquels la spongine déborde fort peu. Une Algue cyanophycée, semblable à une Oscillaire est répandue dans toutes les régions du corps.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on pages 482-483, DOI: 10.5962/bhl.part.35507
Physarum crateriforme Petch, Ann. Roy. Bot. Gard. (Peradeniya
Creators: name: Treviño-Zevallos, Italo
name: García-Cunchillos, Iván
name: Basanta, Diana Wrigley De
name: Lado, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum crateriforme

description: 123. *  Physarum crateriforme Petch, Ann. Roy. Bot. Gard. (Peradeniya) 4: 304 (1909)
 Specimen examined. PERU. Apurimac: Abancay, Tamburco, Abancay, Ampay National Sanctuary, canal dam, 3124 m, 13º35′56”S, 72º52′44”W, 20 Apr 2016, bark of tree alive, Lado 24572 (MA-Fungi 95849).
 Notes. The Peruvian material seems to constitute an infrequent form of the species, with the columella exceeding half of the height of the sporotheca (Fig. 4A), while forms with short or lacking columella usually predominate (Martin & Alexopoulos 1969).
description: Published as part of Treviño-Zevallos, Italo, García-Cunchillos, Iván, Basanta, Diana Wrigley De & Lado, Carlos, 2023, Diversity of Myxomycetes from Peru Part III: The high Andes and the altiplano, pp. 1-92 in Phytotaxa 624 (1) on page 65, DOI: 10.11646/phytotaxa.624.1.1, http://zenodo.org/record/10150721
The 35Cl/37Cl isotopic ratio in dense molecular clouds: HIFI observations of hydrogen chloride towards W3A
Creators: name: Cernicharo, J.
name: Goicoechea, J. R.
name: Daniel, F.
name: Agundez, M.
name: Caux, E.
name: de Graauw, T.
name: De Jonge, A.
name: Kester, D.
name: Leduc, H. G.
name: Steinmetz, E.
name: Stutzki, J.
name: Ward, J. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report on the detection with the HIFI instrument on board the Herschel satellite of the two hydrogen chloride isotopologues, H35Cl and H37Cl, towards the massive star-forming region W3A. The J=1-0 line of both species was observed with receiver 1b of the HIFI instrument at 625.9 and 624.9 GHz. The different hyperfine components were resolved. The observations were modeled with a non-local, non-LTE radiative transfer model that includes hyperfine line overlap and radiative pumping by dust. Both effects are found to play an important role in the emerging intensity from the different hyperfine components. The inferred H35Cl column density (a few times 1e14 cm^-2), and fractional abundance relative to H nuclei (~7.5e^-10), supports an upper limit to the gas phase chlorine depletion of ~200. Our best-fit model estimate of the H35Cl/H37Cl abundance ratio is ~2.1+/-0.5, slightly lower, but still compatible with the solar isotopic abundance ratio (~3.1). Since both species were observed simultaneously, this is the first accurate estimation of the [35Cl]/[37Cl] isotopic ratio in molecular clouds. Our models indicate that even for large line opacities and possible hyperfine intensity anomalies, the H35Cl and H37Cl J=1-0 integrated line-intensity ratio provides a good estimate of the 35Cl/37Cl isotopic abundance ratio.
description: Accepted for publication in Astronomy and Astrophysics (Herschel special issue)
Laser Dressed Scattering of an Attosecond Electron Wave Packet
Creators: name: Gagnon, Justin
name: Krausz, Ferenc
name: Yakovlev, Vladislav S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Classical Physics (physics.class-ph)
subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically investigate the scattering of an attosecond electron wave packet launched by an attosecond pulse under the influence of an infrared laser field. As the electron scatters inside a spatially extended system, the dressing laser field controls its motion. We show that this interaction, which lasts just a few hundreds of attoseconds, clearly manifests itself in the spectral interference pattern between different quantum pathways taken by the outgoing electron. We find that the Coulomb-Volkov approximation, a standard expression used to describe laser-dressed photoionization, cannot properly describe this interference pattern. We introduce a quasi-classical model, based on electron trajectories, which quantitatively explains the laser-dressed photoelectron spectra, notably the laser-induced changes in the spectral interference pattern.
description: 5 pages, 5 figures
Oscillations of the Nernst coefficient in bismuth
Creators: name: Sharlai, Yu. V.
name: Mikitik, G. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We calculate the magnetic-field dependence (oscillations) of the Nernst coefficient in bismuth at low temperatures for the case when the magnetic field is directed along the trigonal axis of the crystal. In the calculations we take into account the scattering of the electrons and holes in bismuth on impurities and the dependence of this scattering on the magnetic field. The results of these calculations are compared with the experimental data recently published.
Correlated photon pairs generated from a warm atomic ensemble
Creators: name: Willis, R. T.
name: Becerra, F. E.
name: Orozco, L. A.
name: Rolston, S. L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present measurements of the cross-correlation function of photon pairs at 780 nm and 1367 nm, generated in a hot rubidium vapor cell. The temporal character of the biphoton is determined by the dispersive properties of the medium where the pair generation takes place. We show that short correlation times occur for optically thick samples, which can be understood in terms of off-resonant pair generation. By modifying the linear response of the sample, we produce near-resonant photon pairs, which could in principle be used for entanglement distribution.
ORCID coverage in research institutions - Readiness for partially automated research reporting
Creators: name: Schnieders, Kathrin
name: Mierz, Sandra
name: Boccalini, Sabine
name: Meyer Zu Westerhausen, Wibke
name: Hauschke, Christian
name: Hagemann-Wilholt, Stephanie
name: Schulze, Sonja
Publisher: name: Universität Osnabrück
Year: 2022
Subjects: subject: (semi-)automated research reporting
subject: linked open metadata
subject: current research information system (CRIS)
subject: persistent identifier (PID)
subject: ORCID
subject: ROR
subject: FREYA
subject: OpenAlex
subject: 020 - Bibliotheks- und Informationswissenschaften

description: Reporting and presentation of research activities and outcome for research institutions in official, normative standards are more and more important and are the basis to comply with reporting duties. Institutional Current Research Information Systems (CRIS) serve as important databases or data sources for external and internal reporting, which should ideally be connected with interfaces to the operational systems for automated loading routines to extract relevant research information. This investigation evaluates whether (semi-) automated reporting using open, public research information collected via persistent identifiers (PIDs) for organizations (ROR), persons (ORCID), and research outputs (DOI) can reduce effort of reporting. For this purpose, internally maintained lists of persons to whom an ORCID record could be assigned (internal ORCID person lists) of two different German research institutions—Osnabrück University (UOS) and the non-university research institution TIB—Leibniz Information Center for Science and Technology Hannover—are used to investigate ORCID coverage in external open data sources like FREYA PID Graph (developed by DataCite), OpenAlex and ORCID itself. Additionally, for UOS a detailed analysis of discipline specific ORCID coverage is conducted. Substantial differences can be found for ORCID coverage between both institutions and for each institution regarding the various external data sources. A more detailed analysis of ORCID distribution by discipline for UOS reveals disparities by research area—internally and in external data sources. Recommendations for future actions can be derived from our results: Although the current level of coverage of researcher IDs which could automatically be mapped is still not sufficient to use persistent identifier-based extraction for standard (automated) reporting, it can already be a valuable input for institutional CRIS.
Stelospongia undetermined
Creators: name: Topsent, Émile
Publisher: name: Zenodo
Year: 1896
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Dictyoceratida
Thorectidae
Stelospongia
Stelospongia undetermined

description: Stelospongia sp. Fragments, appartenant peut-être à plusieurs espèces, mais informes, petits et indéterminables.
description: Published as part of Topsent, Émile, 1896, Spongiaires de la baie d'Amboine. (Voyage de MM. M. Bedot et C. Pictet dans l'archipel Malais.), pp. 421-487 in Revue Suisse de Zoologie 4 (3) on page 483, DOI: 10.5962/bhl.part.35507
Rethinking the Foundations of the Theory of Special Relativity: Stellar Aberration and the Fizeau Experiment
Creators: name: Maers, Anthony F.
name: Wayne, Randy
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In a previous paper published in this journal, we described a new relativistic wave equation that accounts for the propagation of light from a source to an observer in two different inertial frames. This equation, which is based on the primacy of the Doppler effect, can account for the relativity of simultaneity and the observation that charged particles cannot exceed the speed of light. In contrast to the Special Theory of Relativity, it does so without the necessity of introducing the relativity of space and time. Here we show that the new relativistic wave equation based on the primacy of the Doppler effect is quantitatively more accurate than the standard theory based on the Fresnel drag coefficient or the relativity of space and time in accounting for the results of Fizeau's experiment on the optics of moving media - the very experiment that Einstein considered to be "a crucial test in favour of the theory of relativity." The new relativistic wave equation quantitatively describes other observations involving the optics of moving bodies, including stellar aberration and the null results of the Michelson-Morley experiment. In this paper, we propose an experiment to test the influence of the refractive index on the interference fringe shift generated by moving media. The Special Theory of Relativity, which is based on the relativity of space and time, and the new relativistic wave equation, which is based on the primacy of the Doppler effect, make different predictions concerning the influence of the refractive index on the optics of moving media.
description: 59 pages, 13 figures, 1 table
Quantum mechanics in metric space: wave functions and their densities
Creators: name: D'Amico, I.
name: Coe, J. P.
name: Franca, V. V.
name: Capelle, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Hilbert space combines the properties of two fundamentally different types of mathematical spaces: vector space and metric space. While the vector-space aspects of Hilbert space, such as formation of linear combinations of state vectors, are routinely used in quantum mechanics, the metric-space aspects of Hilbert space are much less exploited. Here we show that a suitable metric stratifies Fock space into concentric spheres. Maximum and minimum distances between wave functions are derived and geometrically interpreted in terms of this metric. Unlike the usual Hilbert-space analysis, our results apply also to the reduced space of only ground-state wave functions and to that of particle densities, each of which forms a metric space but not a Hilbert space. The Hohenberg-Kohn mapping between densities and ground-state wave functions, which is highly complex and nonlocal in coordinate description, is found, for three different model systems, to be very simple in metric space, where it is represented by a monotonic mapping of vicinities onto vicinities. Surprisingly, it is also found to be nearly linear over a wide range of parameters.
Safety of perinatal biologic use in autoimmune diseases : population-based studies of maternal and infant outcomes
Creators: name: Tsao, Nicole
Publisher: name: University of British Columbia
Year: 2020

description: Objectives: To examine biologic use before or during pregnancy among women with autoimmune inflammatory disease by: 1) Describing the patterns of use, discontinuation, and 10-year secular trends; 2) Evaluating the association between biologic exposure before or during pregnancy and adverse maternal and infant outcomes including: preterm deliveries, small-for-gestational-age (SGA) births, congenital anomalies, and serious infections; and 3) Reviewing existing literature and meta-analyzing my findings with published results. Methods: Using provincial population-based administrative health data linked with the perinatal registry and prescription dispensations database, a cohort of women with autoimmune inflammatory disease who had at least one pregnancy during 2002-2012 was identified. Descriptive statistics, multivariable modeling, and high-dimensional propensity score (HDPS) methods were used to describe the patterns of perinatal biologic prescriptions and assess associations with outcomes of interest. Results were meta-analyzed with findings from existing literature. Findings: 1) Perinatal biologic use has increased significantly over 10 years, comprising 5.7% of all pregnancies in this population by 2012. Most often women discontinued their biologic in the first (31%), or second (38%) trimesters, while 98% of those on treatment during the second trimester continued through to delivery. Only disease type was associated with discontinuation. 2) After applying HDPS matching, there were no associations observed between biologic use before or during pregnancy and risk of preterm deliveries (OR 1.13, 95% CI 0.67 to 1.90); SGA (OR 0.91, 95% CI 0.46 to 1.78); or congenital anomalies (OR 1.06, 95% CI 0.46 to 2.47). The theoretical concern of serious infections due to immunomodulatory effects of biologics was not observed. 3) Meta-analysis of unadjusted risk estimates showed significantly increased risks of congenital anomalies, preterm deliveries, and low birth weight babies associated with biologic exposure. However, pooled adjusted risk estimates showed no significant associations. Conclusions: Using novel methods to address potential confounding and pooling existing evidence, the findings from this thesis demonstrated that treatment with biologics before or during pregnancy are not associated with a number of important perinatal outcomes. These findings help patients and clinicians weigh risks and benefits of treatment options in pregnancy, and support difficult decision making around using biologics in a vulnerable population.
Heavy metal phytoremediation potential of Brassica chinesis (Pechay)
Creators: name: Luyun, Jennifer
Publisher: name: figshare
Year: 2022
Subjects: Environmental Chemistry

description: In order to make the environment healthier for human beings, contaminated water bodies and land need to be cleansed to make them free from heavy metals and trace elements. This study aimed to determine the heavy metal phytoremediation potential of Brassica chinesis (pechay). This study used a completely randomized experimental research design and was conducted at PengueRuyu Tuguegarao City from June 21, 2017 to October 6, 2017. The plant was cultivated in a hydroponics system. Three hydroponics solutions were prepared namely the control, hydroponics solution spiked with cadmium and the hydroponics solution spiked with lead. The plants were grown in these hydroponics solution for ninety days. After which, the concentration of the heavy metals in the hydroponics solution, roots and shoot system of the plant was determined with the use of Flame Atomic Absorption Spectrophotometer at the Department of Science and Technology [DOST]Regional Standards and Testing Laboratory Regional Office 2 in Tuguegarao City, Cagayan. The phytoremediation potential of Brassica chinesis were described in terms of the bioconcentration factor (BCF) and translocation factor (TF).Results of this study revealed that Brassica chinesis is a potential metal excluder for lead where most of the heavy metals are deposited at the roots of the plant. Moreover, it has also the phytoremediation potential as shown by its high value of BCF and low value of TF. Lastly, it was found out that the plant is a potential phytoremediator both for cadmium and lead
Address delivered by His Holiness Pope John XXIII at the solemn opening of the Second Vatican Council October 11, 1962.Address delivered by His Holiness Pope John XXIII at the formal closing of the First Session of the Second Vatican Council December 8, 1962. A message from the Council Fathers Second Vatican Council. Vatican translations.
Creators: name: Catholic Church. Pope (1958-1963 : John XXIII).
Publisher: name: University of Notre Dame
Year: 2023

description: Not Assigned
The Architecture of Footpaths
Creators: name: Meng, Yvonne
Publisher: name: Monash University
Year: 2025
Subjects: classificationCode: 330499
subject: Urban and regional planning not elsewhere classified
classificationCode: 330199
subject: Architecture not elsewhere classified
classificationCode: 330102
subject: Architectural design
classificationCode: 440612
subject: Urban geography
classificationCode: 330411
subject: Urban design
classificationCode: 330413
subject: Urban planning and health

description: The Architecture of Footpaths examines urban footpaths in the multicultural suburb of Footscray. The research frames footpaths as an important public space in cities; they are a site for everyday spatial practices, formal and informal commercial enterprise, and the direct interface between public and private realms.

This PhD argues that many aspects of active vibrant areas are the result of how footpaths are used. Many of the activities have developed over time and contribute to local character. These uses need to be better understood in order to retain and maintain identity and belonging in rapidly developing areas such as Footscray.
The ultracool-field dwarf luminosity-function and space density from the Canada-France Brown Dwarf Survey
Creators: name: Reyle, C.
name: Delorme, P.
name: Willott, C. J.
name: Albert, L.
name: Delfosse, X.
name: Forveille, T.
name: Artigau, E.
name: Malo, L.
name: Hill, G. J.
name: Doyon, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Thanks to recent and ongoing large scale surveys, hundreds of brown dwarfs have been discovered in the last decade. The Canada-France Brown Dwarf Survey is a wide-field survey for cool brown dwarfs conducted with the MegaCam camera on the Canada-France-Hawaii Telescope telescope. Aims. Our objectives are to find ultracool brown dwarfs and to constrain the field brown-dwarf luminosity function and the mass function from a large and homogeneous sample of L and T dwarfs. Methods. We identify candidates in CFHT/MegaCam i' and z' images and follow them up with pointed near infrared (NIR) imaging on several telescopes. Halfway through our survey we found ~50 T dwarfs and ~170 L or ultra cool M dwarfs drawn from a larger sample of 1400 candidates with typical ultracool dwarfs i' - z' colours, found in 780 square degrees. Results. We have currently completed the NIR follow-up on a large part of the survey for all candidates from mid-L dwarfs down to the latest T dwarfs known with utracool dwarfs' colours. This allows us to draw on a complete and well defined sample of 102 ultracool dwarfs to investigate the luminosity function and space density of field dwarfs. Conclusions. We found the density of late L5 to T0 dwarfs to be 2.0pm0.8 x 10-3 objects pc-3, the density of T0.5 to T5.5 dwarfs to be 1.4pm0.3 x 10-3 objects pc-3, and the density of T6 to T8 dwarfs to be 5.3pm3.1 x 10-3 objects pc-3 . We found that these results agree better with a flat substellar mass function. Three latest dwarfs at the boundary between T and Y dwarfs give the high density 8.3p9.0m5.1 x 10-3 objects pc-3. Although the uncertainties are very large this suggests that many brown dwarfs should be found in this late spectral type range, as expected from the cooling of brown dwarfs, whatever their mass, down to very low temperature.
description: Accepted for publication in A&A
Relations between three-point configuration space shear and convergence statistics
Creators: name: Shi, X.
name: Schneider, P.
name: Joachimi, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: With the growing interest in and ability of using weak lensing studies to probe the non-Gaussian properties of the matter density field, there is an increasing need for the study of suitable statistical measures, e.g. shear three-point statistics. In this paper we establish the relations between the three-point configuration space shear and convergence statistics, which are an important missing link between different weak lensing three-point statistics and provide an alternative way of relating observation and theory. The method we use also allows us to derive the relations between other two- and three-point correlation functions. We show the consistency of the relations obtained with already established results and demonstrate how they can be evaluated numerically. As a direct application, we use these relations to formulate the condition for E/B-mode decomposition of lensing three-point statistics, which is the basis for constructing new three-point statistics which allow for exact E/B-mode separation. Our work applies also to other two-dimensional polarization fields such as that of the Cosmic Microwave Background.
description: 17 pages, 5 figures, submitted to A&A
Creating with blockchain technology : the "provably rare" possibilities of crypto art
Creators: name: Finucane, Blake Patricia
Publisher: name: University of British Columbia
Year: 2019

description: My thesis examines crypto art from several different vantage points. This is a budding artistic phenomenon which, can be broadly defined as art that takes place on the blockchain (also called a distributed digital ledger). Investigating this movement can aid in illuminating alternative forms of contemporary artistic practice, the direction of the blockchain, and a better understanding of cryptocurrency. Crypto art facilitates an efficient form of economic value creation for both artists and collectors, enabled by the blockchain’s capacities around tracing provenance and authenticity as well as implementing mechanisms to ensure artists receive compensation at the point of sale and resale. These outcomes would not have been possible in a pre-blockchain world. However, many of the approaches and philosophies are shared between the makers and functions of crypto art and conceptual art. Several aspects of blockchain technology are “new,” but the problems and questions that crypto art addresses, including its association with larger financial forces, have tremendous art historical precedent. Much of the modern art system is even built upon these connections, and paralleling this movement to conceptual art can help expose these affiliations. Looking at blockchain through the legacy of conceptual art also demonstrates the need for this technology and its capabilities, most notably, the built-in payment structure for artists. With this in mind, the central questions in my thesis are: how has crypto art challenged the relationship to authorship, ownership, dematerialization and distribution that were fundamental to conceptual art? And what relevance does this have for blockchain technology today? In attempting to address these questions, this paper will argue that crypto art reveals and critiques the framework of the art market. I will focus on Rare Pepes (2016-present) for my primary case study but will also survey other crypto art works to support my argument. The majority of my research engages directly with crypto art. For supplementary material, I have relied upon the work of Jason Bailey and Hito Steyerl as well as Oliver Roeder. I will also employ the writings of Lucy Lippard, Benjamin Buchloh and Joseph Kosuth to think through the theoretical side of conceptual art.
On the recitation of the rosary to combat modern world evils. Encyclical letter (Ingravescentibus malis) of His Holiness Pope Pius XI(Vatican press translation) issued September 29, 1937.
Creators: name: Catholic Church.
name: Pope (1922-1939 : Pius XI)
Publisher: name: University of Notre Dame
Year: 2023

description:
 Cover title.
 Ingravescentibus malis.
The MENARA booklet for Academia
Creators: name: Quero, Jordi (ed.)
name: Sala, Cristina (ed.)
Publisher: name: Zenodo
Year: 2019
Subjects: Middle East, academia, North Africa, geopolitics, international relations, political sciences

description: The MENARA Booklets are a series of publications, created under the MENARA Project framework, which provide insights on the Middle East and North Africa regional order. These Booklets translate scholarly-sounded research into helpful insights for practitioners, including humanitarian agencies; development agencies and NGOs; the private sector; and academia. In each of the four Booklets you may find a compendium of articles and extracts covering the most pressing issues for your field of expertise. The MENARA Booklet for Academia provides you state-of-the-art and thoughtful analysis which may enrich your research and teaching on Middle East affairs. This Booklet is designed for teachers and students not devoted to Area Studies of the region but still interested in its reality and how this relates to their fields of expertise. It includes our researchers’ main ideas on topics like the impact of the so-called Arab Spring in the region; ongoing changes for societies and political institutions; peace and conflict dynamics and their effects over economy; and the shifting role of foreign actors. All these, read together, would offer a comprehensive picture of the most critical elements to better understand what it is happening in the region since 2011.
Physarum florigerum Y. Yamam., Hikobia
Creators: name: Treviño-Zevallos, Italo
name: García-Cunchillos, Iván
name: Basanta, Diana Wrigley De
name: Lado, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum florigerum

description: 126. º Physarum florigerum (Meyl.) Y. Yamam., Hikobia 11(4): 528 (1994)
 Specimen examined. PERU. Cusco: Anta, Chinchaypujio, Parccotica, Chinchipuya, Km 8,650, 3608 m, 13º34′07”S, 72º14′27”W, 17 Apr 2016, wood, Lado 24445 (MA-Fungi 95784, USM).
 Notes. Physarum florigerum has an orange-yellow pseudocolumella in the centre of the sporotheca and petaloid dehiscence of the peridium. It resembles Ph. viride, but this species lacks a columella.
 They were previously known from the Seychelles Islands (Kryvomaz et al. 2020), Japan (Takahashi et al. 2022) and U.S. A (GBIF 2022). Its presence in the Neotropics is confirmed since it was previously reported for Venezuela but with an uncertain identification. In Peru, it was found in the department of Cusco, inhabiting the woody remains of trees associated with crops.
description: Published as part of Treviño-Zevallos, Italo, García-Cunchillos, Iván, Basanta, Diana Wrigley De & Lado, Carlos, 2023, Diversity of Myxomycetes from Peru Part III: The high Andes and the altiplano, pp. 1-92 in Phytotaxa 624 (1) on page 67, DOI: 10.11646/phytotaxa.624.1.1, http://zenodo.org/record/10150721
Quantum spatial superresolution by optical centroid measurements
Creators: name: Shin, Heedeuk
name: Chan, Kam Wai Clifford
name: Chang, Hye Jeong
name: Boyd, Robert W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum lithography (QL) has been suggested as a means of achieving enhanced spatial resolution for optical imaging, but its realization has been held back by the low multi-photon detection rates of recording materials. Recently, an optical centroid measurement (OCM) procedure was proposed as a way to obtain spatial resolution enhancement identical to that of QL but with higher detection efficiency (M. Tsang, Phys. Rev. Lett. 102, 253601, 2009). Here we describe a variation of the OCM method with still higher detection efficiency based on the use of photon-number-resolving detection. We also report laboratory results for two-photon interference. We compare these results with those of the standard QL method based on multi-photon detection and show that the new method leads to superresolution but with higher detection efficiency.
description: 4 pages, 2 figures
DEP Bulletin: Volume 42 Issue 1
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2018

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
Knowledge of Contraception, Sex and Attitude of Teachers Towards Birth Control in Calabar Education Zone of Cross River State, Nigeria-.pdf
Creators: name: Onnoghen, Usang  Nkanu
Publisher: name: figshare
Year: 2022
Subjects: subject: 160508 Health Policy
subject: FOS: Political science

description: The study examines knowledge of contraception sex and teachers' attitude towards birth control in Calabar Education Zone of Cross River State Nigeria. To achieve the purpose of this study two null hypothesis where formulated...
Dynamics in binary cluster crystals
Creators: name: Camargo, Manuel
name: Moreno, Angel J.
name: Likos, Christos N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: As a result of the application of coarse-graining procedures to describe complex fluids, the study of systems consisting of particles interacting through bounded, repulsive pair potentials has become of increasing interest in the last years. A well known example is the so-called Generalized Exponential Model (GEM-$m$), for which the interaction between particles is described by the potential $v(r)=ε\exp[-(r/σ)^m]$. Interactions with $m > 2$ lead to the formation of a novel phase of soft matter consisting of cluster crystals. Recent studies on the phase behavior of binary mixtures of GEM-$m$ particles have provided evidence for the formation of novel kinds of alloys, depending on the cross interactions between the two species. This work aims to study the dynamic behavior of such binary mixtures by means of extensive molecular dynamics simulations, and in particular to investigate the effect of the addition of non-clustering particles on the dynamic scenario of one-component cluster crystals. Analogies and differences with the one-component case are revealed and discussed by analyzing self- and collective dynamic correlators.
description: 17 pages, 8 figures, submitted to JSTAT