cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Why telecoupling research needs to account for environmental justice
Creators: name: Boillat, Sébastien
name: Martin, Adrian
name: Adams, Timothy
name: Daniel, Desiree
name: Llopis, Jorge
name: Zepharovich, Elena
name: Oberlack, Christoph
name: Sonderegger, Gabi
name: Bottazzi, Patrick
name: Esteve Corbera
name: Chinwe Ifejika Speranza
name: Pascual, Unai
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Engaging with normative questions in land system science is a key challenge. This debate paper highlights the potential of incorporating elements of environmental justice scholarship into the evolving telecoupling framework that focuses on distant interactions in land systems. We first expose the reasons why environmental justice matters in understanding telecoupled systems, and the relevant approaches suited to mainstream environmental justice into telecoupled contexts. We then explore which specific elements of environmental justice need to be incorporated into telecoupling research. We focus on 1) the distribution of social-ecological burdens and benefits across distances, 2) power and justice issues in governing distantly tied systems, and 3) recognition issues in information flows, framings and discourses across distances. We conclude our paper highlighting key mechanisms to address injustices in telecoupled land systems.
Polarization control of optical transmission of a periodic array of elliptical holes in a metal film
Creators: name: Elliott, Jill
name: Smolyaninov, Igor I.
name: Zheludev, Nikolay I.
name: Zayats, Anatoly V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Spectral dependencies of polarized optical transmission of a metal film with a periodic array of elliptical nanoholes have been studied. Such nanostructured metal films exhibit the enhanced broadband optical transmission which can be controlled by selecting polarization of incident and/or transmitted light.
description: 8 pages, 4 figures
Streak artifacts from non-convex metal objects in X-ray tomography
Creators: name: Wang, Yiran
name: Zou, Yuzhou
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study artifacts in the reconstruction of X-ray tomography due to nonlinear effects. For non-convex metal objects, we analyze the new phenomena of streak artifacts from inflection points on the boundary of metal objects. We characterize the location and strength of all possible artifacts using notions of conormal distributions associated with the proper geometry.
description: To appear in Pure and Applied Analysis. The updated version has slightly modified organization, including a new argument for the final section
Excited B mesons from the lattice
Creators: name: UKQCD Collaboration
name: Green, A. M.
name: Koponen, J.
name: McNeile, C.
name: Michael, C.
name: Thompson, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine the energies of the excited states of a heavy-light meson $Q\bar{q}$, with a static heavy quark and light quark with mass approximately that of the strange quark from both quenched lattices and with dynamical fermions. We are able to explore the energies of orbital excitations up to L=3, the spin-orbit splitting up to L=2 and the first radial excitation. These $b \bar{s}$ mesons will be very narrow if their mass is less than 5775 MeV -- the $BK$ threshold. We investigate this in detail and present evidence that the scalar meson (L=1) will be very narrow and that as many as 6 $b \bar{s}$ excited states will have energies close to the $BK$ threshold and should also be relatively narrow.
description: 17 pages, 6 ps figures
SMALL FARMER LOAN REPAYMENT PERFORMANCE
Creators: name: Maharjan, Krishna H.
name: Loohawenchit, Chesada
name: Meyer, Richard L.
name: Maharjan, Krishna H.
name: Loohawenchit, Chesada
name: Meyer, Richard L.
Publisher: name: Unknown
Year: 1981
Subjects: International Development

description: Study revealed that loan supervision and collection were the most important variables explaining agricultural loan repayment behavior by small farmers in Nepal. Most studies categorize repayment factors into ability and willingness of farmers to repay. Willingness to collect and other institutional problems may be more important in many credit programs.
Self-Similar Random Processes and Infinite-Dimensional Configuration Spaces
Creators: name: Goldin, Gerald A.
name: Moschella, Ugo
name: Sakuraba, Takao
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss various infinite-dimensional configuration spaces that carry measures quasiinvariant under compactly-supported diffeomorphisms of a manifold M corresponding to a physical space. Such measures allow the construction of unitary representations of the diffeomorphism group, which are important to nonrelativistic quantum statistical physics and to the quantum theory of extended objects in d-dimensional Euclidean space. Special attention is given to measurable structure and topology underlying measures on generalized configuration spaces obtained from self-similar random processes (both for d = 1 and d > 1), which describe infinite point configurations having accumulation points.
3D weak lensing
Creators: name: Heavens, Alan
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I propose an analysis method, based on spin-spherical harmonics and spherical Bessel functions, for large-scale weak lensing surveys which have source distance information through photometric redshifts. I show that the distance information can significantly reduce statistical errors on cosmological parameters; in particular, 3D lensing analysis offers excellent prospects for constraining the equation of state of the vacuum energy which dominates the energy density of the Universe. I show that the ratio of pressure to energy density could be determined to an accuracy of $\sim 1%$ or better. Having distance information also offers significant advantages in the control of systematic effects such as the intrinsic alignment of galaxies. The case for obtaining photometric redshifts is therefore compelling. A signal-to-noise eigenmode analysis of the modes shows that the modes with highest signal-to-noise correspond quite closely to ignoring the redshift information, but there is significant extra information from a few radial modes. These modes are generally long-wavelength, suggesting that useful information can be gleaned even if the photometric redshifts are relatively inaccurate.
description: 8 pages; submitted to MNRAS
A protecção juscivil da vida pré-natal. Sobre o estatuto jurídico do embrião
Creators: name: Frada, Manuel António Carneiro Da
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
FOOD AID DISINCENTIVES AND ECONOMIC DEVELOPMENT: SOME RECONSIDERATIONS IN LIGHT OF THE TUNISIAN EXPERIENCE
Creators: name: Bezuneh, Mesfin
name: Deaton, Brady J.
name: Bezuneh, Mesfin
name: Deaton, Brady J.
Publisher: name: Unknown
Year: 1981
Subjects: International Development

description: The disincentive effects of total food assistance on the Tunisian economy were analyzed using simultaneous equations. The analysis showed that no significant price disincentives were evident. The authors attributed these results to effective government pricing policy combined with a strong positive relationship between food aid and per capita income.
Dust as probes: determining confinement and interaction forces
Creators: name: Ashrafi, Khandaker Sharmin
name: Yousefi, Razieh
name: Chen, Mudi
name: Matthews, Lorin S.
name: Hyde, Truell W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Complex plasmas are interesting systems as the charged dust can self-assemble into different types of ordered structures. To understand the mechanisms which govern the transitions from one type of structure to another, it is necessary to know both the dust charge and the confining electric fields within the environment, parameters which are difficult to measure independently. The problem is further complicated by the ion wake field, which develops downstream of the dust grains in a flowing plasma. The differences in local ion density caused by the wake field change the equilibrium dust charge and shielding distance of the dust grains, and thus affect the interaction between grains. Here we use a molecular dynamics simulation of ion flow past dust grains to investigate the interaction between the dust particles and ions. We consider a long vertical chain of particles confined within a glass box placed on the lower electrode of a GEC rf reference cell. Ions stream from the bulk plasma at the top of the box to the negative lower electrode. We apply the model iteratively to self-consistently determine the dust charge, electric field, and ion density along the length of the chain as well as the ion flow speed. Simulation results indicate that the ion flow speed within the box is subsonic.
Onuphis Audouin & Milne-Edwards 1833
Creators: name: Salazar-Vallejo, Sergio I.
name: Carrera-Parra, Luis F.
name: Muir, Alexander I.
name: León-González, Jesús Angel De
name: Piotrowski, Christina
name: Sato, Masanori
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Eunicida
Onuphidae
Onuphis

description: Onuphis Audouin & Milne-Edwards, 1833 amakusaensis Maekawa & Hayashi, 1999: Amakusa, Shimojima, Japan. NSTM 430, OMNH 1614 branchiata Treadwell, 1926: Marinduque Island, Philippines. USNM 19545 fukianensis Uschakov & Wu, 1962: Fujian, China. IOCAS, type not located iriei Maekawa & Hayashi, 1999: East China Sea. NSMT 432, OMNH1624 punggolensis Tan & Chou, 1998: Sungei Punggol, Singapore. ZNUS 1996.1565, 1566–1578. pseudodibranchiata Gallardo, 1968: Gulf of Nha Trang, Vietnam. LACM 297, ZMUC 1516, 1517 (= Kinbergonuphis pseudobranchiata fide Fauchald 1982) shijikiensis Maekawa & Hayashi, 1999: East China Sea. NSMT434, OMNH 1628
description: Published as part of Salazar-Vallejo, Sergio I., Carrera-Parra, Luis F., Muir, Alexander I., León-González, Jesús Angel De, Piotrowski, Christina & Sato, Masanori, 2014, Polychaete species (Annelida) described from the Philippine and China Seas, pp. 1-68 in Zootaxa 3842 (1) on page 27, DOI: 10.11646/zootaxa.3842.1.1, http://zenodo.org/record/4928482
Constructing Phantom Cosmologies from Standard Scalar Field Universes
Creators: name: Chimento, L. P.
name: Lazkoz, Ruth
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We illustrate how form-invariance transformations can be used for constructing phantom cosmologies from standard scalar field universes. First, we discuss how to relate two flat Friedmann-Robertson-Walker cosmologies with different barotropic indexes $γ$ and $\bar γ$. Then, we consider the particular case $\bar γ=-γ$, and we show that if the matter content is interpreted in terms of self-interacting scalar fields, then the corresponding transformation provides the link between a standard and a phantom cosmology. After that, we illustrate the method by considering models with exponential potentials. Finally, we also show that the mentioned duality persists even if the typical braneworld modifications to the Friedmann equation are considered.
description: 3 pages, revtex4, new title and minor changes in the main text and references to match published version
title: The Application of Graph Theory to the Synthesis of Protocol Converters via the Interface Equation
Creators: name: Pengelly, Alan David
Publisher: name: The Open University
Year: 1995

description: The synthesis and subsequent generation of protocol converters can be a time consuming and tedious affair. An automatic means of generating these converters, given a formal description of the interfacing protocols, has been researched by a number of academics and industrialists. From industry's point of view, the potential gains both in time and resource savings are large. While there is a strong standards movement within the protocol community, the output from that process is likely to be slow in terms of its dissemination to the communications world at large. The recent emergence of the Superhighway has compounded the problems of standardisation. Hence, the development of converters will be a key issue for many years to come. By far the most concise and complete attack on the problem to date came form a body of work referred to as the interface equation. While more general than other methods it has suffered from excessive computational complexity and, as with all other published work, a lack of demonstrable scalability. Also, the necessary and sufficient conditions before a solution could be found - if it existed at all - limited the domain of applicability. The work in this thesis can be seen as a natural extension of this work, in that the problems of computability, scalability and a number of other issues, have been addressed, albeit by different approach. The theory developed arose from a completely novel approach - moving the problem into the domain of graph theory and topology. The resulting theory has spawned a number of interesting results, which include extensions to CCS, further development of the quotient machine concept, the notion of symmetric validation and a further unification between automata and graph theory. Indeed, it is expected that the merging of these two disciplines may well open a rich field of study. The theory has been validated using numerous examples, including a complex 600 state synthesis problem which, while still falling short of real industrial problems, is at least 1.5 orders of magnitude larger than those published by other researchers.
A questão actual do estatuto jurídico do nascituro
Creators: name: Moutinho, José Lobo
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Paradiopatra Ehlers 1887
Creators: name: Salazar-Vallejo, Sergio I.
name: Carrera-Parra, Luis F.
name: Muir, Alexander I.
name: León-González, Jesús Angel De
name: Piotrowski, Christina
name: Sato, Masanori
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Eunicida
Onuphidae
Paradiopatra

description: Paradiopatra Ehlers, 1887 pyricirra Budaeva & Fauchald, 2011: SW off Kagoshima, Japan. ZMUB 87050, 87051 unica Imajima 1999: Kagoshima Bay, Japan. NMST 414
description: Published as part of Salazar-Vallejo, Sergio I., Carrera-Parra, Luis F., Muir, Alexander I., León-González, Jesús Angel De, Piotrowski, Christina & Sato, Masanori, 2014, Polychaete species (Annelida) described from the Philippine and China Seas, pp. 1-68 in Zootaxa 3842 (1) on page 27, DOI: 10.11646/zootaxa.3842.1.1, http://zenodo.org/record/4928482
A condição jurídica do nascituro no direito brasileiro
Creators: name: Amaral, Francisco
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Semiclassical dynamics of a disordered two-dimensional Hubbard model with long-range interactions
Creators: name: Sajna, Adam S.
name: Polkovnikov, Anatoli
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quench dynamics in a two-dimensional system of interacting fermions is analyzed within the semiclassical truncated Wigner approximation (TWA). The models with short-range and long-range interactions are considered. We show that in the latter case, the TWA is very accurate, becoming asymptotically exact in the infinite-range limit, provided that the semiclassical Hamiltonian is correctly identified. Within the TWA, different dynamical timescales of charges and spins can be clearly distinguished. Interestingly, for a weak and moderate disorder strength, we observe subdiffusive behavior of charges, while spins exhibit diffusive dynamics. At strong disorder, the quantum Fisher information shows logarithmic growth in time with a slower increase for charges than for spins. It is shown that in contrast to the short-range model, strong inhomogeneities such as domain walls in the initial state can significantly slow down thermalization dynamics, especially at weak disorder. This behavior can put additional challenges in designing cold-atom experimental protocols aimed to analyze possible many-body localization in such systems. While within this approach we cannot make any definite statements about the existence of a many-body localized phase, we see a very fast crossover as a function of disorder strength from rapidly thermalizing to a slow glassy like regime both for the short-range and long-range models.
description: 15 pages, 12 figures
Consequences of self-consistency violations in Hartree-Fock random-phase approximation calculations of the nuclear breathing mode energy
Creators: name: Agrawal, B. K.
name: Shlomo, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We provide for the first time accurate assessments of the consequences of violations of self-consistency in the Hartree-Fock based random phase approximation (RPA) as commonly used to calculate the energy $E_c$ of the nuclear breathing mode. Using several Skyrme interactions we find that the self-consistency violated by ignoring the spin-orbit interaction in the RPA calculation causes a spurious enhancement of the breathing mode energy for spin unsaturated systems. Contrarily, neglecting the Coulomb interaction in the RPA or performing the RPA calculations in the TJ scheme underestimates the breathing mode energy. Surprisingly, our results for the $^{90}$Zr and $^{208}$Pb nuclei for several Skyrme type effective nucleon-nucleon interactions having a wide range of nuclear matter incompressibility ($K_{nm} \sim 215 - 275$ MeV) and symmetry energy ($J \sim 27 - 37$ MeV) indicate that the net uncertainty ($δE_c \sim 0.3$ MeV) is comparable to the experimental one.
description: Revtex file (11 pages), Accepted for the publication in Phys. Rev. C
Impact of Wayfinding Signages and Posters on the use of Water Fountains
Creators: name: Xu, Ziru
name: Zhou, Qiansui
name: Xiong, Xiaochao (Sophie)
name: Lin, Linnea
name: Dong, Wanzi (Sophy)
name: Teng, Yueyang (Gary)
Publisher: name: The University of British Columbia
Year: 2019

description: Promoting the use of water fountains has a significant impact on environmental sustainability, and appropriate wayfinding signages are crucial to easier access to water fountains. This experiment was conducted on individuals in UBC through naturalistic observation and examined whether the installation of wayfinding signages and campaign posters influence people’s usage of water fountains on the lower floor of the UBC AMS Student Nest. We hypothesize that the signages and posters will both individually increase the utilization of the water fountain, as well as when installed together. This study has three conditions: (1) neither signages nor posters were installed, (2) only signages were installed, and (3) both signages and posters were installed. We also randomly surveyed 100 participants to investigate their preference and perception of the water fountain. We conducted multiple chi-square tests and found a significant difference comparing the signages condition and the signages and posters condition, and low recognition of the wayfinding signages. While individual installations of the wayfinding signages or the posters did not lead to a significant increase in the usage of the water fountain, the usage increased when the two were combined. Implications and recommendations for future studies are also discussed in detail to enhance the impact of wayfinding signages and posters. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
La persona e l’ordinamento giuridico nel pensiero giusfilosofico di Mário Emílio Forte Bigotte Chorão
Creators: name: Castellano, Danilo
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Apresentação
Creators: name: Silva, Nuno Espinosa Gomes Da
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Impact of Visuomotor Feedback on the Embodiment of Virtual Hands Detached from the Body
Creators: name: Seinfeld, Sofia
name: Müller, Jörg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.m

description: It has been shown that mere observation of body discontinuity leads to diminished body ownership. However, the impact of body discontinuity has mainly been investigated in conditions where participants observe a collocated static virtual body from a first-person perspective. This study explores the influence of body discountinuity on the sense of embodiment, when rich visuomotor correlations between a real and an artificial virtual body are established. In two experiments, we evaluated body ownership and motor performance, when participants interacted in virtual reality either using virtual hands connected or disconnected from a body. We found that even under the presence of congruent visuomotor feedback, mere observation of body discontinuity resulted in diminished embodiment. Contradictory evidence was found in relation to motor performance, where further research is needed to understand the role of visual body discontinuity in motor tasks. Preliminary findings on physiological reactions to a threat were also assessed, indicating that body visual discontinuity does not differently impact threat-related skin conductance responses. The present results are in accordance with past evidence showing that body discontinuity negatively impacts embodiment. However, further research is needed to understand the influence of visuomotor feedback and body morphological congruency on motor performance and threat-related physiological reactions.
Divinização do princípio maioritário e Estado em transição para o totalitarismo
Creators: name: Otero, Paulo
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Bryant-Salamon $\mathrm{G}_2$ manifolds and coassociative fibrations
Creators: name: Karigiannis, Spiro
name: Lotay, Jason D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C38, 53C29

description: Bryant-Salamon constructed three 1-parameter families of complete manifolds with holonomy $\mathrm{G}_2$ which are asymptotically conical to a holonomy $\mathrm{G}_2$ cone. For each of these families, including their asymptotic cone, we construct a fibration by asymptotically conical and conically singular coassociative 4-folds. We show that these fibrations are natural generalizations of the following three well-known coassociative fibrations on $\mathbb R^7$: the trivial fibration by 4-planes, the product of the standard Lefschetz fibration of $\mathbb C^3$ with a line, and the Harvey-Lawson coassociative fibration. In particular, we describe coassociative fibrations of the bundle of anti-self-dual 2-forms over the 4-sphere $\mathcal{S}^4$, and the cone on $\mathbb C \mathbb P^3$, whose smooth fibres are $T^*\mathcal{S}^2$, and whose singular fibres are $\mathbb R^4/\{\pm 1\}$. We relate these fibrations to hypersymplectic geometry, Donaldson's work on Kovalev-Lefschetz fibrations, harmonic 1-forms and the Joyce--Karigiannis construction of holonomy $\mathrm{G}_2$ manifolds, and we construct vanishing cycles and associative "thimbles" for these fibrations.
description: 76 pages, 7 tables, 11 colour figures. Version 2: Discussion of multimoment maps clarified. Other minor revisions and improvements made as per suggestions of the referee. Final version, to appear in Journal of Geometry and Physics. Version 3: Corrected three spelling errors, updated publication info of reference [18], and added funding information to acknowledgements
Armandia Filippi 1861
Creators: name: Salazar-Vallejo, Sergio I.
name: Carrera-Parra, Luis F.
name: Muir, Alexander I.
name: León-González, Jesús Angel De
name: Piotrowski, Christina
name: Sato, Masanori
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Ophellida
Opheliidae
Armandia

description: Armandia Filippi, 1861 amakusaensis Saito, Tamaki & Imajima, 2000: Amakusa, Japan. NSMT 360, 361–369 exigua Kükenthal, 1887: Leeo-tu (Letong), China. ZMH
description: Published as part of Salazar-Vallejo, Sergio I., Carrera-Parra, Luis F., Muir, Alexander I., León-González, Jesús Angel De, Piotrowski, Christina & Sato, Masanori, 2014, Polychaete species (Annelida) described from the Philippine and China Seas, pp. 1-68 in Zootaxa 3842 (1) on page 28, DOI: 10.11646/zootaxa.3842.1.1, http://zenodo.org/record/4928482
Browsing, networking, contextualizing: Research practices of humanists and implications for library instruction
Creators: name: Lehnen, Carl
name: Insua, Glenda
Publisher: name: University of Illinois at Chicago
Year: 2022
Subjects: subject: Library and Information Studies
subject: FOS: Media and communications
subject: Literature

description: Using semi-structured interviews of faculty in literature, culture, and writing studies at a large public research university, this study investigates their research practices to help rethink disciplinary dimensions of information literacy. Findings showed a strong social dimension to their information-seeking practices and a reliance on informal methods. Themes that emerged were disciplinary perspectives, browsing and serendipity, colleagues and community, limitations in access and time constraints, and informal research training. The authors discuss implications for instruction, including ways in which librarians might demystify humanities research for graduate and upper level undergraduate students.
Measuring black hole masses from tidal disruption events and testing the $M_{\rm BH}-σ_*$ relation
Creators: name: Zhou, Z. Q.
name: Liu, F. K.
name: Komossa, S.
name: Cao, R.
name: Ho, L. C.
name: Chen, Xian
name: Li, Shuo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Liu and collaborators recently proposed an elliptical accretion disk model for tidal disruption events (TDEs). They showed that the accretion disks of optical/UV TDEs are large and highly eccentric and suggested that the broad optical emission lines with complex and diverse profiles originate in the cool eccentric accretion disk of random inclination and orientation. In this paper, we calculate the radiation efficiency of the elliptical accretion disk and investigate the implications for the observations of TDEs. We compile observational data for the peak bolometric luminosity and total radiation energy after peak brightness of 18 TDE sources and compare these data to the predictions from the elliptical accretion disk model. Our results show that the observations are consistent with the theoretical predictions and that the majority of the orbital energy of the stellar debris is advected into the black hole (BH) without being converted into radiation. Furthermore, we derive the masses of the disrupted stars and the masses of the BHs of the TDEs. The BH masses obtained in this paper are also consistent with those calculated with the $M_{\rm BH} - σ_*$ relation. Our results provide an effective method for measuring the masses of BHs in large numbers of TDEs to be discovered in ongoing and next-generation sky surveys, regardless of whether the BHs are located at the centers of galactic nuclei or wander in disks and halos.
description: 41 pages, 12 figures, 3 tables, to match the published version in ApJ
Polyophthalmus de Quatrefages 1850
Creators: name: Salazar-Vallejo, Sergio I.
name: Carrera-Parra, Luis F.
name: Muir, Alexander I.
name: León-González, Jesús Angel De
name: Piotrowski, Christina
name: Sato, Masanori
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Ophellida
Opheliidae
Polyophthalmus

description: Polyophthalmus de Quatrefages, 1850 striatus Kükenthal, 1887: Hong Kong. ZMH
description: Published as part of Salazar-Vallejo, Sergio I., Carrera-Parra, Luis F., Muir, Alexander I., León-González, Jesús Angel De, Piotrowski, Christina & Sato, Masanori, 2014, Polychaete species (Annelida) described from the Philippine and China Seas, pp. 1-68 in Zootaxa 3842 (1) on page 28, DOI: 10.11646/zootaxa.3842.1.1, http://zenodo.org/record/4928482
Supplementary Figures from Underwater caustics disrupt prey detection by a reef fish
Creators: name: S. R. Matchette
name: I. C. Cuthill
name: K. L. Cheney
name: N. J. Marshall
name: N. E. Scott-Samuel
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Natural habitats contain dynamic elements, such as varying local illumination: can such features mitigate the salience of organism movement? Dynamic illumination is particularly prevalent in coral reefs, where patterns known as ‘water caustics’ play chaotically in the shallows. In behavioural experiments with a wild-caught reef fish, the Picasso triggerfish (Rhinecanthus aculeatus), we demonstrate that the presence of dynamic water caustics negatively affects the detection of moving prey items, as measured by attack latency, relative to static water caustic controls. Manipulating two further features of water caustics (sharpness and scale) implies that the masking effect should be most effective in shallow water: scenes with fine scale and sharp water caustics induce the longest attack latencies. Due to the direct impact upon foraging efficiency, we expect the presence of dynamic water caustics to influence decisions about habitat choice and foraging by wild prey and predators.
Las aporías presentes del derecho natural (de retorno en retorno)
Creators: name: Ayuso, Miguel
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Travisia Johnston 1840
Creators: name: Salazar-Vallejo, Sergio I.
name: Carrera-Parra, Luis F.
name: Muir, Alexander I.
name: León-González, Jesús Angel De
name: Piotrowski, Christina
name: Sato, Masanori
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Ophellida
Scalibregmatidae
Travisia

description: Travisia Johnston, 1840 (key: Dauvin & Bellan 1994) chinensis Grube, 1869: Chinese Sea, probably Shingdao, China. ZMB 6029 horsti Caullery, 1944: SW Flores, Indonesia. NML 2148
description: Published as part of Salazar-Vallejo, Sergio I., Carrera-Parra, Luis F., Muir, Alexander I., León-González, Jesús Angel De, Piotrowski, Christina & Sato, Masanori, 2014, Polychaete species (Annelida) described from the Philippine and China Seas, pp. 1-68 in Zootaxa 3842 (1) on page 28, DOI: 10.11646/zootaxa.3842.1.1, http://zenodo.org/record/4928482
The effect of collisional enhancement of Balmer lines on the determination of the primordial helium abundance
Creators: name: Luridiana, V.
name: Peimbert, A.
name: Peimbert, M.
name: Cervino, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper describes a new determination of the primordial helium abundance (Y_P), based on the abundance analysis of five metal-poor extragalactic HII regions. For three regions of the sample (SBS 0335-052, I Zw 18, and H29) we present tailored photoionization models based on improved calculations with respect to previous models. In particular, we use the photoionization models to study quantitatively the effect of collisional excitation of Balmer lines on the determination of the helium abundance (Y) in the individual regions. This effect is twofold: first, the intensities of the Balmer lines are enhanced with respect to the pure recombination value, mimicking a higher hydrogen abundance; second, the observed reddening is larger than the true extinction, due to the differential effect of collisions on different Balmer lines. In addition to these effects, our analysis takes into account the following features of HII regions: (i) the temperature structure, (ii) the density structure, (iii) the presence of neutral helium, (iv) the collisional excitation of the HeI lines, (v) the underlying absorption of the HeI lines, and (vi) the optical thickness of the HeI lines. The object that shows the highest increase in Y after the inclusion of collisional effects in the analysis is SBS 0335-052, whose helium abundance has been revised by Delta Y = +0.0107. The revised Y values for the five objects in our sample yield an increase of +0.0035 in Y_P, giving Y_P = 0.2391 +/- 0.0020.
description: 59 pages, 8 figures. AAS Latex. Accepted for publication in the Astrophysical Journal
Apresentação
Creators: name: Xavier, Bernardo Da Gama Lobo
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Mid-infrared spectral evidence for a luminous dust enshrouded source in Arp220
Creators: name: Spoon, H. W. W.
name: Moorwood, A. F. M.
name: Lutz, D.
name: Tielens, A. G. G. M.
name: Siebenmorgen, R.
name: Keane, J. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have re-analyzed the 6-12 micron ISO spectrum of the ultra-luminous infrared galaxy Arp220 with the conclusion that it is not consistent with that of a scaled up version of a typical starburst. Instead, both template fitting with spectra of the galaxies NGC4418 and M83 and with dust models suggest that it is best represented by combinations of a typical starburst component, exhibiting PAH emission features, and a heavily absorbed dust continuum which contributes ~40% of the 6-12 micron flux and likely dominates the luminosity. Of particular significance relative to previous studies of Arp220 is the fact that the emission feature at 7.7 micron comprises both PAH emission and a broader component resulting from ice and silicate absorption against a heavily absorbed continuum. Extinction to the PAH emitting source, however, appears to be relatively low. We tentatively associate the PAH emitting and heavily dust/ice absorbed components with the diffuse emission region and the two compact nuclei respectively identified by Soifer et al. (2002) in their higher spatial resolution 10 micron study. Both the similarity of the absorbed continuum with that of the embedded Galactic protostars and results of the dust models imply that the embedded source(s) in Arp220 could be powered by, albeit extremely dense, starburst activity. Due to the high extinction, it is not possible with the available data to exclude that AGN(s) also contribute some or all of the observed luminosity. In this case, however, the upper limit measured for its hard X-ray emission would require Arp220 to be the most highly obscured AGN known.
description: 11 pages, 9 figures. Accepted for publication in A&A. Also available at http://www.astro.rug.nl/~spoon/publications.html
Realismo, personalismo e jusnaturalismo no debate jurídico contemporâneo
Creators: name: Teixeira, António Braz
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Natureza humana e direito natural no pensamento de António José Brandão e João Baptista Machado
Creators: name: Sousa, Ana Paula Loureiro De
Publisher: name: Direito e Justiça
Year: 2008

description: Direito e Justiça, n. Especial (2008): Verdade, pessoa humana e ordem político-jurídica: Colóquio Internacional em Homenagem a Mário Emílio Bigotte Chorão
Orbinia de Quatrefages 1865
Creators: name: Salazar-Vallejo, Sergio I.
name: Carrera-Parra, Luis F.
name: Muir, Alexander I.
name: León-González, Jesús Angel De
name: Piotrowski, Christina
name: Sato, Masanori
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Orbiniidae
Orbinia

description: Orbinia de Quatrefages, 1865 vietnamensis Gallardo, 1968: Nha Trang, Vietnam. LACM 298, MZUC 8276
description: Published as part of Salazar-Vallejo, Sergio I., Carrera-Parra, Luis F., Muir, Alexander I., León-González, Jesús Angel De, Piotrowski, Christina & Sato, Masanori, 2014, Polychaete species (Annelida) described from the Philippine and China Seas, pp. 1-68 in Zootaxa 3842 (1) on page 28, DOI: 10.11646/zootaxa.3842.1.1, http://zenodo.org/record/4928482