cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Physics of Heavy Flavours at SuperB
Creators: name: Bevan, Adrian J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This is a review of the SuperB project, covering the accelerator, detector, and highlights of the broad physics programme. SuperB is a flavour factory capable of performing precision measurements and searches for rare and forbidden decays of $B_{u,d,s}$, $D$, $τ$ and $Υ({\mathrm{nS}})$ particles. These results can be used to test fundamental symmetries and expectations of the Standard Model, and to constrain many different hypothesised types of new physics. In some cases these measurements can be used to place constraints on the existence of light dark matter and light Higgs particles with masses below $10GeV/c^2$. The potential impact of the measurements that will be made by SuperB on the field of high energy physics is also discussed in the context of data taken at both high energy in the region around the Υ({\mathrm{4S}})$, and near charm threshold.
description: 49 pages, topical review submitted to J. Phys G
Joint Remodeling Molecules and Complement Components in Septic Arthritis
Creators: name: Belenska-Todorova, Lyudmila
name: Ivanovska, Nina
Publisher: name: Zenodo
Year: 2021
Subjects: Infectious arthritis
complement system
TGF-β
BMP
sclerostin
RANKL

description: Septic arthritis (SA) is also known as infectious arthritis and unlike other inflammatory joint diseases, it is caused by viruses, bacteria, and fungi. These microorganisms spread to the joints from an existing focus in the body through the bloodstream or enter through a wound in case of injury or surgical intervention of the joint. Pathogenesis of SA is due to specific interactions of the microorganism and the host, especially its immune system. We analyzed the available data in literature about some infections in which molecular factors are produced that are also known to be involved in remodeling processes of arthritis. We evaluated the role of complement system components and certain joint remodeling markers, such as transforming growth factor beta (TGF-β), bone morphogenic protein (BMP), osteoprotegerin/receptor activator of nuclear factor κ B/ receptor activator of nuclear factor κ B ligand (OPG/RANK/RANKL) and sclerostin in pathogenesis of septic arthritis. We discuss possible treatment strategies based on targeting of these molecules for reduction of inflammatory destructive response in the joints during infections.
Early Bombardment of the Moon: Connecting the Lunar Crater Record to the Terrestrial Planet Formation
Creators: name: Nesvorny, David
name: Roig, Fernando V.
name: Vokrouhlicky, David
name: Bottke, William F.
name: Marchi, Simone
name: Morbidelli, Alessandro
name: Deienno, Rogerio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The lunar crater record features $\sim 50$ basins. The radiometric dating of Apollo samples indicates that the Imbrium basin formed relatively late -- from the planet formation perspective -- some $\simeq 3.9$ Ga. Here we develop a dynamical model for impactors in the inner solar system to provide context for the interpretation of the lunar crater record. The contribution of cometary impactors is found to be insignificant. Asteroids produced most large impacts on the terrestrial worlds in the last $\simeq 3$ Gyr. The great majority of early impactors were rocky planetesimals left behind at $\sim 0.5$--1.5 au after the terrestrial planet accretion. The population of terrestrial planetesimals was reduced by disruptive collisions in the first $t \sim 20$ Myr after the gas disk dispersal. We estimate that there were $\sim 4 \times 10^5$ diameter $d>10$ km bodies when the Moon formed (total planetesimal mass $\sim 0.015$ $M_{\rm Earth}$ at $t \sim 50$ Myr). The early bombardment of the Moon was intense. To accommodate $\sim 50$ known basins, the lunar basins that formed before $\simeq 4.35$--4.41 Ga must have been erased. The late formation of Imbrium occurs with a $\sim 15$--35\% probability in our model. About 20 $d>10$-km bodies were expected to hit the Earth between 2.5 and 3.5 Ga, which is comparable to the number of known spherule beds in the late Archean. We discuss implications of our model for the lunar/Martian crater chronologies, Late Veneer, and noble gases in the Earth atmosphere.
description: Icarus, in press
Alma Observations Of The Gq Lup System
Creators: name: MacGregor, Meredith
Publisher: name: Zenodo
Year: 2016

description: We present ALMA band 7 line and continuum observations of the GQ Lup system, a young Sun-like star with a substellar mass companion at 100 AU separation. We characterize the disk around the primary, constrain the stellar mass using the disk Keplerian rotation, and place an upper limit on the mass of a disk around the companion. We discuss possible formation mechanisms for the companion.
description: David Wilner, Luca Ricci, Sean Andrews, Leonardo Testi, Adam Kraus, Kaitlin Kratter, Yu Dai, Gregory Herczeg
Pressure evolution of electronic and crystal structure of non-centrosymmetric EuCoGe$_3$
Creators: name: Dhami, N. S.
name: Balédent, V.
name: Bednarchuk, O.
name: Kaczorowski, D.
name: Shieh, S. R.
name: Ablett, J. M.
name: Rueff, J. -P.
name: Itié, J. P.
name: Kumar, C. M. N.
name: Utsumi, Y.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on the pressure evolution of the electronic and crystal structures of the noncentrosymmetric antiferromagnet EuCoGe3. Using a diamond anvil cell, we performed high pressure fluorescence detected near-edge x-ray absorption spectroscopy at the Eu L3, Co K, and Ge K edges and synchrotron powder x-ray diffraction. In the Eu L3 spectrum, both divalent and trivalent Eu peaks are observed from the lowest pressure measurement (~2 GPa). By increasing pressure, the relative intensity of the trivalent Eu peak increases, and an average Eu valence continuously increases from 2.2 at 2 GPa to 2.31 at~50 GPa. On the other hand, no discernible changes are observed in the Co K and Ge K spectra as a function of pressure. With the increase in pressure, lattice parameters continuously decrease without changing I4mm symmetry. Our study revealed a robust divalent Eu state and an unchanged crystal symmetry of EuCoGe3 against pressure.
description: Accepted in PRB https://journals.aps.org/prb/accepted/b2073O6fL9e1ca40307905b1de5bf05de12d8fc1a
Fluid-solid phase transitions in 3D complex plasmas under microgravity conditions
Creators: name: Khrapak, S. A.
name: Klumov, B. A.
name: Huber, P.
name: Molotkov, V. I.
name: Lipaev, A. M.
name: Naumkin, V. N.
name: Ivlev, A. V.
name: Thomas, H. M.
name: Schwabe, M.
name: Morfill, G. E.
name: Petrov, O. F.
name: Fortov, V. E.
name: Malentschenko, Yu.
name: Volkov, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Phase behavior of large three-dimensional complex plasma systems under microgravity conditions onboard the International Space Station is investigated. The neutral gas pressure is used as a control parameter to trigger phase changes. Detailed analysis of structural properties and evaluation of three different melting/freezing indicators reveal that complex plasmas can exhibit melting by increasing the gas pressure. Theoretical estimates of complex plasma parameters allow us to identify main factors responsible for the observed behavior. The location of phase states of the investigated systems on a relevant equilibrium phase diagram is estimated. Important differences between the melting process of 3D complex plasmas under microgravity conditions and that of flat 2D complex plasma crystals in ground based experiments are discussed.
description: 13 pages, 10 figures; submitted to Phys. Rev. E
Heat-Capacity Measurements of Energy-Gap Nodes of the Heavy-Fermion Superconductor CeIrIn5 Deep inside the Pressure-Dependent Dome Structure of its Superconducting Phase Diagram
Creators: name: Lu, Xin
name: Lee, Hanoh
name: Park, T.
name: Ronning, F.
name: Bauer, E. D.
name: Thompson, J. D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use heat capacity measurements as a function of field rotation to identify the nodal gap structure of CeIrIn5 at pressures to 2.05 GPa, deep inside its superconducting dome. A four-fold oscillation in the heat capacity at 0.3 K is observed for all pressures but with its sign reversed between 1.50 and 0.90 GPa. On the basis of recent theoretical models for the field-angle dependent specific heat, all data, including the sign reversal, imply a d{x^2-y^2} order parameter with nodes along [110], which constrains theoretical models of the pairing mechanism in CeIrIn5.
description: To appear in Phys. Rev. Lett
Unravelling optical and X-ray properties of the disc-dominated intermediate polar IGR J15094-6649
Creators: name: Joshi, Arti
name: Rawat, Nikita
name: Schwope, Axel
name: Pandey, J. C.
name: Scaringi, Simone
name: Sahu, D. K.
name: Rao, Srinivas M
name: Singh, Mridweeka
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present analyses of an Intermediate Polar, IGR J15094-6649, based on the archival optical data obtained from the Transiting Exoplanet Survey Satellite (TESS) and X-ray data obtained from the Suzaku, NuSTAR, and Neil Gehrels Swift Observatory (Swift). Present analysis confirms and refines the previously reported spin period of IGR J15094-6649 as 809.49584$\pm$0.00075 s. Clear evidence of a beat period of 841.67376$\pm$0.00082 s is found during the long-term TESS optical observations, which was not evident in the earlier studies. The dominance of X-ray and optical spin pulse unveils the disc-fed dominance accretion, however, the presence of an additional beat frequency indicates that part of the accreting material also flows along the magnetic field lines. The energy-dependent spin pulsations in the low (< 10 keV) energy band are due to the photoelectric absorption in the accretion flow. However, the complex absorbers may be responsible to produce low amplitude spin modulations via Compton scattering in the hard ( > 10 keV) energy band and indicate that the height of the X-ray emitting region may be negligible. The observed double-humped X-ray profiles with a pronounced dip are indicative of the photoelectric absorption in the intervening accretion stream. Analysis of the X-ray spectra reveals the complexity of the X-ray emission, being composed of multi-temperature plasma components with a soft excess, reflection, and suffers from strong absorption.
description: 15 pages, 10 figures, and 5 Tables, Accepted for publication in MNRAS. arXiv admin note: text overlap with arXiv:2112.06270
Cyprus: Regulation Of Labour Market Intermediaries And Role Of The Social Partners In Preventing Trafficking Of Labour
Creators: name: Stavrou, Polina
Publisher: name: Zenodo
Year: 2016
Subjects: subject: Labour mobility
subject: Cyprus
subject: http://www.eurofound.europa.eu/topics/access-to-employment

description: Cyprian national contribution to the report Regulation of labour market intermediaries and the role of social partners in preventing trafficking of labour, published by Eurofound.
description: Disclaimer: This information is made available as a service to the public but has not been edited by the European Foundation for the Improvement of Living and Working Conditions. The content is the responsibility of the authors.
Czech Republic: Regulation Of Labour Market Intermediaries And Role Of The Social Partners In Preventing Trafficking Of Labour
Creators: name: Kyzlinkova, Renata
Publisher: name: Zenodo
Year: 2016
Subjects: Labour mobility
Czech Republic

description: Czech national contribution to the report Regulation of labour market intermediaries and the role of social partners in preventing trafficking of labour, published by Eurofound.
description: Disclaimer: This information is made available as a service to the public but has not been edited by the European Foundation for the Improvement of Living and Working Conditions. The content is the responsibility of the authors.
Coaches' perceived impact of the Respect in Sport (RiS) program on bullying, abuse, neglect, and harassment in sports
Creators: name: Nirmal, Rashmeen
Publisher: name: University of British Columbia
Year: 2010

description: Interpersonal problems such as harassment, bullying, and sexual abuse by both peers and adults are becoming increasingly recognized as a problem among children and youth in schools, and are also gaining attention in sports. With an increase in awareness comes concerted educational efforts to address interpersonal problems, including prevention programs targeting adults in schools and in the community. Respect in Sport (RiS) is an online, preventative education program for coaches designed to create safe and healthy sport environments for participants by targeting key areas that are paramount to prevention and intervention in bullying, abuse, neglect, and harassment in sports. The purpose of the current study was to examine the extent to which coaches perceived the Respect in Sport program to have impacted their knowledge and practice in these areas. Participants included coaches from Alberta Gymnastics, Ontario Gymnastics, and Sport Manitoba who completed the RiS training in the last three years. A total of 1,091 participants, representing 51 different sports, were asked to complete a self-report survey regarding their perceptions of the impact of RiS on their coaching practice. Results from this study revealed that an overwhelming percentage of participants perceived the Respect in Sport program to have enhanced their knowledge and practice in key areas of the program’s objectives. Further examination of results across type and level of sports, age and sex of coaches and athletes, and time at which coaches were certified in Respect in Sport revealed few significant differences, and the effect sizes were small. The results of this study have implications for further program development, implementation, and ongoing systematic evaluation. With the heightened demand for implementing and evaluating programs that are evidence-based, the results of this study also have implications for school psychologists working in schools and in the community.
Geometry of integral polynomials, $M$-ideals and unique norm preserving extensions
Creators: name: Dimant, Verónica
name: Galicer, Daniel
name: García, Ricardo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46G25, 46M05, 46B28

description: We use the Aron-Berner extension to prove that the set of extreme points of the unit ball of the space of integral polynomials over a real Banach space $X$ is $\{\pm ϕ^k: ϕ\in X^*, \| ϕ\|=1\}$. With this description we show that, for real Banach spaces $X$ and $Y$, if $X$ is a non trivial $M$-ideal in $Y$, then $\hat\bigotimes^{k,s}_{ε_{k,s}} X$ (the $k$-th symmetric tensor product of $X$ endowed with the injective symmetric tensor norm) is \emph{never} an $M$-ideal in $\hat\bigotimes^{k,s}_{ε_{k,s}} Y$. This result marks up a difference with the behavior of non-symmetric tensors since, when $X$ is an $M$-ideal in $Y$, it is known that $\hat\bigotimes^k_{ε_k} X$ (the $k$-th tensor product of $X$ endowed with the injective tensor norm) is an $M$-ideal in $\hat\bigotimes^k_{ε_k} Y$. Nevertheless, if $X$ is Asplund, we prove that every integral $k$-homogeneous polynomial in $X$ has a unique extension to $Y$ that preserves the integral norm. We explicitly describe this extension. We also give necessary and sufficient conditions (related with the continuity of the Aron-Berner extension morphism) for a fixed $k$-homogeneous polynomial $P$ belonging to a maximal polynomial ideal $\Q(^kX)$ to have a unique norm preserving extension to $\Q(^kX^{**})$. To this end, we study the relationship between the bidual of the symmetric tensor product of a Banach space and the symmetric tensor product of its bidual and show (in the presence of the BAP) that both spaces have `the same local structure'. Other applications to the metric and isomorphic theory of symmetric tensor products and polynomial ideals are also given.
description: 25 pages
What are they thinking? : cognitive distortions and adolescent externalizing and internalizing problems
Creators: name: Bruno, Talino
Publisher: name: University of British Columbia
Year: 2010

description: Cognitive distortions have been linked to both externalizing and internalizing problems in children and adults, but very few studies have explicitly examined this link in a community-based sample of adolescents. The relation of self-debasing (cognitions which are inaccurate and debase the self) and self-serving (cognitions which protect an individual from self-censure) cognitive distortions to self- and teacher-reported internalizing, externalizing, and co-occurring problems was investigated. The sample consisted of 182 males and 207 females aged 12 to 17 years (M = 14.29, SD = 1.01). Externalizing and internalizing problems were measured using the Youth Self-Report (YSR) and Teacher’s Report Form (TRF). Self-debasing distortions were measured using the Children’s Negative Cognitive Error Questionnaire (CNCEQ), and self-serving distortions measured using the How I Think Questionnaire (HIT). A series of correlational analyses revealed that self-serving cognitive distortions were significantly associated with externalizing problems, and self-debasing cognitive distortions were significantly associated with internalizing problems. A unique statistical approach, the Relative Pratt Index (RPI; Thomas, Hughes, & Zumbo, 1998), was used in this study to measure the relative importance of predictor variables in a series of hierarchical regression analyses. The results of the hierarchical regression analyses and subsequent RPI indicated that self-serving and self-debasing cognitive distortions were the most important significant predictors, relative to the other variables in the model, of externalizing and internalizing problems, respectively. The specific self-serving cognitive distortions of assuming the worst, minimizing/mislabeling, and self-centered were found to be the most important significant predictors, relative to the other variables in the model, of externalizing problems. The specific self-debasing cognitive distortions of overgeneralizing and catastrophizing were the most important significant predictors, relative to the other variables in the model, of internalizing problems. The results of this study revealed large associations and high specificity between cognitive distortions and internalizing, and externalizing problems in a sample of community-based adolescents. Implications of the findings for intervention and prevention are discussed.
Modelling Dark Matter Halo Spin using Observations and Simulations: application to UGC 5288
Creators: name: Ansar, Sioree
name: Kataria, Sandeep Kumar
name: Das, Mousumi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark matter (DM) halo properties are extensively studied in cosmological simulations but are very challenging to estimate from observations. The DM halo density profile of observed galaxies is modelled using multiple probes that trace the dark matter potential. However, the angular momentum distribution of DM halos is still a subject of debate. In this study we investigate a method for estimating the halo spin and halo concentration of low surface brightness (LSB), gas-rich dwarf barred galaxy UGC 5288, by forward modelling disk properties derived from observations - stellar and gas surface densities, disk scale length, HI rotation curve, bar length and bar ellipticity. We combine semi-analytical techniques, N-body/SPH and cosmological simulations to model the DM halo of UGC 5288 with both a cuspy Hernquist profile and a flat-core pseudo-isothermal profile. We find that the best match with observations is a pseudo-isothermal halo model with a core radius of $r_{c} = 0.23$ kpc, and halo spin of $λ$= 0.08 at the virial radius. Although our findings are consistent with previous core radius estimates of the halo density profile of UGC 5288, as well as with the halo spin profiles of similar mass analogues of UGC5288 in the high-resolution cosmological-magneto-hydrodynamical simulation TNG50, there still remain some uncertainties as we are limited in our knowledge of the formation history of the galaxy. Additionally, we find that the inner halo spin ($ r< 10$ kpc) in barred galaxies is different from the unbarred ones, and the halo spin shows weak correlations with bar properties.
description: 29 pages including Appendix, 28 figures, accepted in MNRAS, comments are welcome from the community
Introduction to GraphBLAS: A linear algebraic approach for concise, portable, and high-performance graph algorithms
Creators: name: Szárnyas, Gábor
Publisher: name: Zenodo
Year: 2020
Subjects: GraphBLAS
sparse linear algebra
graph algorithms
graph queries
graph processing

description: This tutorial describes the theoretical background of GraphBLAS. First, we discuss the need for a standard for graph algorithms. Then, we define the key concepts in GraphBLAS such as sparse matrix multiplication, semirings, and masked matrix operations. We illustrate their usage through textbook graph algorithms including BFS, single-source shortest paths, triangle count, PageRank as well as more advanced graph algorithms such as community detection, local clustering coefficient, and bidirectional BFS. Finally, we provide a collection of GraphBLAS tools and resources for learning more about GraphBLAS.
The Information Commons at the University of Calgary: service in transition
Creators: name: Beatty, Susan
Publisher: name: University of Calgary
Year: 2009
Subjects: subject: Library & Information Science
subject: Information commons

description: International Conference on Information and Learning Commons: enhancing its role in Academic learning and Collaboration, Hong Kong University of Science and Technology, Dec. 10-11, 2007
description: The Information Commons at the University of Calgary Library (1999) is a facility which provides both reference and technical support. Its successful service model is based on collaboration between the Library and University Information Technologies. The University is in the midst of planning for a new Library (Taylor Family Digital Library) which will house additional collaborative partners. The new Learning Commons will have a broader suite of services. The Learning Commons service model will build on the best of the Information Commons and bring new features which will further support learning and collaboration. This paper will focus on the current operations of the Commons (issues and opportunities), the features (physical and virtual) used to support learning and collaboration, and the lessons learned, as well as identify and discuss the current process of transition. Using the lessons learned, the presentation also points to possible future models of service in the new Learning Commons.
Fabrication Development for SPT-SLIM, a Superconducting Spectrometer for Line Intensity Mapping
Creators: name: Cecil, T.
name: Albert, C.
name: Anderson, A. J.
name: Barry, P. S.
name: Benson, B.
name: Cotter, C.
name: Chang, C.
name: Dobbs, M.
name: Dibert, K.
name: Gualtieri, R.
name: Karkare, K. S.
name: Lisovenko, M.
name: Marrone, D. P.
name: Montgomery, J.
name: Pan, Z.
name: Robson, G.
name: Rouble, M.
name: Shirokoff, E.
name: Smecher, G.
name: Wang, G.
name: Yefremenko, V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Line Intensity Mapping (LIM) is a new observational technique that uses low-resolution observations of line emission to efficiently trace the large-scale structure of the Universe out to high redshift. Common mm/sub-mm emission lines are accessible from ground-based observatories, and the requirements on the detectors for LIM at mm-wavelengths are well matched to the capabilities of large-format arrays of superconducting sensors. We describe the development of an R = 300 on-chip superconducting filter-bank spectrometer covering the 120--180 GHz band optimized for future mm-LIM experiments, focusing on SPT-SLIM, a pathfinder LIM instrument for the South Pole Telescope. Radiation is coupled from the telescope optical system to the spectrometer chip via an array of feedhorn-coupled orthomode transducers. Superconducting microstrip transmission lines then carry the signal to an array of channelizing half-wavelength resonators, and the output of each spectral channel is sensed by a lumped element kinetic inductance detector (leKID). Key areas of development include incorporating new low-loss dielectrics to improve both the achievable spectral resolution and optical efficiency and development of a robust fabrication process to create a galvanic connection between ultra-pure superconducting thin-films to realize multi-material (hybrid) leKIDs. We provide an overview of the spectrometer design, fabrication process, and prototype devices.
description: 7 pages, 7 figures, presented at 2022 Applied Superconductivity Conference
Assessing Discovery; University of Calgary
Creators: name: Beatty, Susan
name: Clarke, Helen
name: Pasterfield, Andrew
name: Koltutsky, Laura
name: Lipton, Saundra
name: Jones, Rhiannon
name: Au Yeung, Tim
name: Pival, Paul R.
name: Sahadath, Catelynne
name: Drewes, Kathy
name: Brown, David
Publisher: name: University of Calgary
Year: 2013
Subjects: subject: Library & Information Science
subject: Discovery
subject: assessment
subject: usability testing
subject: University of Calgary Library
subject: Summon
subject: bento box

description: In fall 2012 the University of Calgary Library launched a new home page that incorporated a Summon powered Single Search Box with customized “bento box” results display. Search at the U of C now combines a range of metadata sources for discovery and customized mapping of database recommender and LibGuide into a unified display. The Discovery User Experience Team and the Systems Group in the library have engaged in extensive assessment of user reactions both prior to and since this change, including log file analysis, surveys, and usability testing.
Trichonta apicalis Strobl 1897
Creators: name: El Mouden, Mohamed Amin
name: Chandler, Peter J.
name: Saidoun, Imane
name: Driauach, Ouafaa
name: Belqat, Boutaïna
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Trichonta
Trichonta apicalis

description: Trichonta apicalis Strobl 1897
Material examined.
Morocco – Middle Atlas Region • 1 ♂; Grotte Bouslama; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/24184.
North African distribution.
New to Morocco and North Africa.
description: Published as part of El Mouden, Mohamed Amin, Chandler, Peter J., Saidoun, Imane, Driauach, Ouafaa & Belqat, Boutaïna, 2025, A new species of Docosia Winnertz, 1864 and new records of fungus gnats (Diptera, Bolitophilidae, Keroplatidae and Mycetophilidae) from North Africa, pp. 349-379 in ZooKeys 1233 on pages 349-379, DOI: 10.3897/zookeys.1233.130502
The Hamiltonian for von Zeipel-Lidov-Kozai oscillations
Creators: name: Tremaine, Scott
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Hamiltonian used in classical analyses of von Zeipel-Lidov-Kozai or ZLK oscillations in hierarchical triple systems is based on the quadrupole potential from a distant body on a fixed orbit, averaged over the orbits of both the inner and the outer bodies ("double-averaging"). This approximation can be misleading, because the corresponding Hamiltonian conserves the component of angular momentum of the inner binary normal to the orbit of the outer binary, thereby restricting the volume of phase space that the system can access. This defect is usually remedied by including the effects of the octopole potential, or by allowing the outer orbit to respond to variations in the inner orbit. However, in a wide variety of astrophysical systems nonlinear perturbations are comparable to or greater than these effects. The long-term effects of nonlinear perturbations are described by an additional Hamiltonian, which we call Brown's Hamiltonian. At least three different forms of Brown's Hamiltonian are found in the literature; we show that all three are related by a gauge freedom, although one is much simpler than the others. We argue that investigations of ZLK oscillations in triple systems should include Brown's Hamiltonian.
description: 11 pages, 3 figures. To be published in Monthly Notices of the Royal Astronomical Society
Tablets, TeamSpot and Twiltter; updating the learning experience in the Learning Commons
Creators: name: Beatty, Susan
Publisher: name: University of Calgary
Year: 2014
Subjects: subject: Library & Information Science
subject: learning commons
subject: Taylor Family Digital Library
subject: learning spaces

description: Netspeed 2013 presentation.
description: The Taylor Family Digital Library (TFDL) at the University of Calgary officially opened in Fall 2011 as a leading edge 21st century academic library designed to enhance and support the learning and knowledge creation experience by providing resources, new technology, new spaces and new services to its users. The Learning Commons in the TFDL includes the general service public spaces, classrooms, workrooms, and open study areas over six floors. The students have made the library the main meeting and working space on campus and their presence continues to grow. This presentation will provide an overview of the TFDL Learning Commons spaces, technology to support learning, and service program. It will highlight the opportunities, successes, challenges and lessons learned so far.
The formation history of our Galaxy's nuclear stellar disc constrained from HST observations of the Quintuplet field
Creators: name: Schoedel, R.
name: Nogueras-Lara, F.
name: Hosek, M.
name: Do, T.
name: Lu, J.
name: Arranz, A. Martínez
name: Ghez, A.
name: Rich, R. M.
name: Gardini, A.
name: Gallego-Cano, E.
name: Cano-González, M.
name: Gallego-Calvente, A. T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Until recently it was thought that the nuclear stellar disc at the centre of our Galaxy was formed via quasi-continuous star formation over billions of years. However, an analysis of GALACTICNUCLEUS survey data indicates that >80% of the mass of the stellar disc formed at least 8 Gyr ago and about 5% roughly 1 Gyr ago. Our aim is to derive new constraints on the formation history of the nuclear stellar disc. We analysed a catalogue of HST/WFC3-IR observations of the Quintuplet cluster field. From this catalogue, we selected about 24000 field stars that probably belong to the nuclear stellar disc. We used red clump giants to deredden the sample and fit the resulting F153M luminosity function with a linear combination of theoretical luminosity functions created from different stellar evolutionary models. We find that >70% of the stellar population in the nuclear disc probably formed more than 10 Gyr ago, while ~15% formed in an event (or series of events) ~1Gyr ago. Up to 10% of the stars appear to have formed in the past tens to hundreds of Myr. These results do not change significantly for reasonable variations in the assumed mean metallicity, sample selection, reddening correction, or stellar evolutionary models. We confirm previous work that changed the formation paradigm for stars in the Galactic Centre. The nuclear stellar disc is indeed a very old structure. There seems to have been little star formation activity between its formation and about 1 Gyr ago.
description: Accepted for publication in A&A
Alma: Exocometary Gas In The Hd 181327 Debris Ring
Creators: name: Marino, Sebastian
Publisher: name: Zenodo
Year: 2016

description: Using ALMA we detect for the first time CO gas in a debris disc around a solar-type star. We find the gas is of secondary origin and we probe the CO/rock composition of exocomets in the disc, finding it matches with Solar System comets. The dust continuum is resolved in an axisymmetric ring that that is consistent with grain size segregation due to radiation pressure and with a scale height<0.14.
description: L. Matrà, C. Stark, M. C. Wyatt, S. Casassus, G. Kennedy, ||
D. Rodriguez, B. Zuckerman, S. Perez, W. R. F. Dent, M. Kuchner, A. M. Hughes,
G. Schneider, A. Steele, A. Roberge, J. Donaldson and E. Nesvold
Spectroscopy of Very Low Mass Stars and Brown Dwarfs in the Lambda Orionis Star Forming Region. I. Enlarging the census down to the planetary mass domain in Collinder 69
Creators: name: Bayo, A.
name: Barrado, D.
name: Stauffer, J.
name: Morales-Calderon, M.
name: Melo, C.
name: Huelamo, N.
name: Bouy, H.
name: Stelzer, B.
name: Tamura, M.
name: Jayawardhana, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Whilst there is a generally accepted evolutionary scheme for the formation of low-mass stars, the analogous processes when moving down in mass to the brown dwarfs regime are not yet well understood. In this first paper we try to build the most complete and unbiased spectroscopically confirmed census of the population of Collinder 69, the central cluster of the Lambda Orionis star forming region, as a first step in addressing the question of how brown dwarfs and planetary mass objects form. We have studied age dependent features in optical and near-infrared spectra of candidate members to the cluster (such as alkali lines and accretion associated indicators). In addition, we have complemented that study with the analysis of other youth indicators like X-ray emission or mid-infrared excess. We have confirmed the membership to Collinder 69 of \sim90 photometric candidate members. As a byproduct we have determined a temperature scale for young M, very low-mass stars and brown dwarfs. We have assembled one of the most complete Initial Mass Functions from 0.016 to 20 M\odot. And, finally, we have studied the implications of the spatial distribution of the confirmed members on the proposed mechanisms of brown dwarfs formation.
description: Accepted for publication in A&A
Modelling the optical energy profile of the 2021 October Jupiter impact flash
Creators: name: Arimatsu, Ko
name: Tsumura, Kohji
name: Usui, Fumihiko
name: Watanabe, Jun-ichi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have conducted numerical simulations to reproduce the observed optical energy profile of the 15 October 2021 (UT) impact flash on Jupiter, which was the largest and the most well-observed flash event detected by ground-based movie observations. The observed long-duration ($\sim 5.5~{\rm s}$) optical emission can be reproduced by an impact of an object with an exceptionally small angle of entry relative to the horizontal. The apparent lack of the impact debris feature despite the large impact object was possibly due to the shallower angle of entry ($\le 12^\circ$), which resulted in the lower ablation per unit volume at altitudes higher than $50 \, {\rm km}$, and the volume densities of the ablated materials were too low to allow the debris particulates to coagulate. The absence of temporal methane absorption change in the observed flash spectrum is consistent with the best-fit results. The model better fits the observed optical energy profile for weaker material (cometary and stony) cases than for metallic ones. Based on the simulation results, prospects for future observations of impact flashes are discussed.
description: 6 pages, 5 figures, Accepted for publication in MNRAS
title: Rare fistulated gallstone presenting as gastric mass on imaging
Creators: name: Arain, Salman J.
Publisher: name: EURORAD
Year: 2025
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Gastrointestinal tract
subject: Stomach (incl. Oesophagus)
subject: CT
subject: Endoscopy
subject: Calcifications / Calculi
subject: Clinical Case

description: Clinical History: An 84-year-old Caucasian male presented with dyspepsia, weight loss, and macrocytic anaemia. The patient had a history of multiple comorbidities, including implantable cardiac defibrillator placement, pulmonary embolus, chronic lymphocytic leukaemia (CLL), right inguinal hernia repair, and osteoarthritis.

description: 84 years, male
title: Final Environmental Assessment/Regulatory Impact Review for a Proposed Regulatory Amendment to allow longline pot gear in the Bering Sea Greenland turbot fishery
Creators: name: NOAA National Marine Fisheries Service Alaska Regional Office
Publisher: name: NOAA National Marine Fisheries Service Alaska Regional Office
Year: 2024

description: This Environmental Assessment/Regulatory Impact Review analyzes proposed management measures that would authorize the use of longline pot gear when directed fishing for Greenland turbot in the Bering Sea management subarea. The considered action alternatives would apply to holders of groundfish License Limitation Program licenses that are endorsed for non-trawl gear in the Bering Sea. An optional measure would exempt longline pots used in the directed fishery for Bering Sea Greenland turbot from the 9-inch maximum tunnel opening restriction. The purpose of the action is to provide the non-trawl sector with options to effectively prosecute the Bering Sea Greenland turbot fishery in the context of whale depredation on hook-and-line gear.
Enlightening the dynamical evolution of Galactic open clusters: an approach using Gaia DR3 and analytical descriptions
Creators: name: Angelo, M. S.
name: Santos, J. F. C.
name: Maia, F. F. S.
name: Corradi, W. J. B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Most stars in our Galaxy form in stellar aggregates, which can become long-lived structures called open clusters (OCs). Along their dynamical evolution, their gradual depletion leave some imprints on their structure. In this work, we employed astrometric, photometric and spectroscopic data from the \textit{Gaia} DR3 catalogue to uniformly characterize a sample of 60 OCs. Structural parameters (tidal, core and half-light radii, respectively, $r_t$, $r_c$ and $r_h$), age, mass ($M_{\textrm{clu}}$), distance, reddening, besides Jacobi radius ($R_J$) and half-light relaxation time ($t_{rh}$), are derived from radial density profiles and astrometrically decontaminated colour-magnitude diagrams. Ages and Galactocentric distances ($R_G$) range from 7.2$\,\lesssim\,$log($t.$yr$^{-1}$)$\,\lesssim\,$9.8 and 6$\,\lesssim\,R_G$(kpc)$\,\lesssim\,$12. Analytical expressions derived from $N$-body simulations, taken from the literature, are also employed to estimate the OC initial mass ($M_{\textrm{ini}}$) and mass loss due to exclusively dynamical effects. Both $r_c$ and the tidal filling ratio, $r_h/R_J$, tend to decrease with the dynamical age (=$t/t_{rh}$), indicating the shrinking of the OCs' internal structure as consequence of internal dynamical relaxation. This dependence seems differentially affected by the external tidal field, since OCs at smaller $R_G$ tend to be dynamically older and have smaller $M_{\textrm{clu}}/M_{\textrm{ini}}$ ratios. In this sense, for $R_G\lesssim8\,$kpc, the $r_h/R_J$ ratio presents a slight positive correlation with $R_G$. Beyond this limit, there is a dichotomy in which more massive OCs tend to be more compact and therefore less subject to tidal stripping in comparison to those less massive and looser OCs at similar $R_G$. Besides, the $r_t/R_J$ ratio also tends to correlate positively with $R_G$.
description: 21 pages, 15 figures. Accepted for publication in MNRAS
Propagation and Reduction of Coherent States in Bargmann Spaces
Creators: name: Rousseva, Jenia
Publisher: name: My University
Year: 2022
Subjects: subject: Gaussian coherent states
subject: Non-Hermitian Schrödinger evolution
subject: Dimensional reduction
subject: Symbol calculus
subject: Spin-coherent states
subject: Mathematics
subject: FOS: Mathematics
subject: Science

description: Coherent states are special types of wavefunctions that minimize a generalized uncertainty principle for a suitable pair of operators. Equivalently, they are eigenstates of an appropriate annihilation operator. Their applications are extensive throughout physics including in quantum optics, nuclear physics, quantum field theory, path integral formulations, and quantum information through the study of entanglement and quantum measurement. This thesis explores two main topics. First, we consider the Schrödinger evolution of a Gaussian coherent state under a non-Hermitian Hamiltonian. We develop a symbol calculus and use it to construct an approximate solution to the time-dependent Schrödinger equation. We find the evolution equations of the center and the Gaussian matrix of the coherent state, which form a system. This result generalizes the previously-known case where the classical Hamiltonian is quadratic. In the second part of the thesis, we apply a quantum version of dimensional reduction to construct Gaussian coherent states in the Bargmann space of complex projective space. The semiclassical properties of these reduced states are controlled by a suitable notion of symbol. Making use of these properties, we provide norm estimates and a propagation result for Hermitian Hamiltonians. As a special case of these reduced states, we define and examine spin-squeezed states that live naturally in the Bargmann space of the Riemann sphere.
Identifying and characterizing ultracool dwarfs ejected from post-encounter disintegrating systems
Creators: name: Yip, Alexandra K. P.
name: Kurtev, Radostin
name: Pinfield, David J.
name: Marocco, Federico
name: Gromadzki, Mariusz
name: Carballo-Bello, Julio A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Disintegrating multiple systems have been previously discovered from kinematic studies of the $\it Hipparcos$ catalogue. They are presumably the result of dynamical encounters taking place in the Galactic disk between single/multiple systems. In this paper, we aim to expand the search for such systems, to study their properties, as well as to characterize possible low-mass ejecta (i.e. brown dwarfs and planets). We have assembled a list of 15 candidate systems using astrometry from the Tycho-Gaia astrometric solution (later upgraded with $\it Gaia$ DR3), and here we present the discovery and follow-up of 5 of them. We have obtained DECam imaging for all 5 systems and by combining near-infrared photometry and proper motion, we searched for ultra-cool ejected components. We find that the system consisting of TYC 7731-1951-1, TYC 7731-2128 AB, and TYC 7731-1995-1ABC?, contains one very promising ultra-cool dwarf candidate. Using additional data from the literature, we have found that 3 out of 5 disintegrating system candidates are likely to be true disintegrating systems.
description: Accepted for publication in MNRAS. 17 pages, 8 figures, 4 tables
From the Blazar Sequence to the Blazar Envelope: Revisiting the Relativistic Jet Dichotomy in Radio-loud AGN
Creators: name: Meyer, Eileen T.
name: Fossati, Giovanni
name: Georganopoulos, Markos
name: Lister, Matthew L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We revisit the concept of a blazar sequence that relates the synchrotron peak frequency (νpeak) in blazars with synchrotron peak luminosity (Lpeak, in νLν) using a large sample of radio-loud AGN. We present observational evidence that the blazar sequence is formed from two populations in the synchrotron νpeak - Lpeak plane, each forming an upper edge to an envelope of progressively misaligned blazars, and connecting to an adjacent group of radio galaxies having jets viewed at much larger angles to the line of sight. When binned by jet kinetic power (Lkin; as measured through a scaling relationship with extended radio power), we find that radio core dominance decreases with decreasing synchrotron Lpeak, revealing that sources in the envelope are generally more misaligned. We find population-based evidence of velocity gradients in jets at low kinetic powers (~ 10^42-10^44.5 erg/s), corresponding to FR I radio galaxies and most BL Lacs. These low jet power 'weak jet' sources, thought to exhibit radiatively inefficient accretion, are distinguished from the population of non-decelerating, low synchrotron-peaking (LSP) blazars and FR II radio galaxies ('strong' jets) which are thought to exhibit radiatively efficient accretion. The two-population interpretation explains the apparent contradiction of the existence of highly core-dominated, low-power blazars at both low and high synchrotron peak frequencies, and further implies that most intermediate synchrotron peak (ISP) sources are not intermediate in intrinsic jet power between LSP and high synchrotron-peaking (HSP) sources, but are more misaligned versions of HSP sources with similar jet powers.
description: 17 pages, 8 figures, 2 appendices
Downloadable version of a major depression animation (Quicktime)
Creators: name: Patten, Scott B.
Publisher: name: BioMed Central
Year: 2007
Subjects: subject: Health Sciences
subject: Major Depressive Disorder
subject: Epidemiology
subject: Visual Animation

description: This is a downloadable version of the animation in a recent BMC Psychiatry Publication. The file is in the QuickTime format.
Compactness of immersions with local Lipschitz representation
Creators: name: Breuning, Patrick
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We consider immersions admitting uniform representations as an L-Lipschitz graph. In codimension 1, we show compactness for such immersions for arbitrary fixed finite L and uniformly bounded volume. The same result is shown in arbitrary codimension for L less than or equal to 1/4.