cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Role of foster parents with abused children
Creators: name: Mallon, Susan Margaret
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: Child abuse
subject: Foster parents
subject: Foster home care
subject: Children - Management

description: Bibliography: p. <17-18>.
description: The numbers of children coming into care because of abuse remains a problem in Canada. While much needed attention has been paid ·this problem by professionals interested in eradicating abuse completely, there is also a need for some ameliora·ti ve program for those children who have suffered abuse. The following paper focuses on foster parents. Though these people have been an important part of North American child welfare for many years, the potential they have for offering therapeutic help to children may have been underestimated. In the following pages, thirty-three foster parents in Calgary indicate their willingness and desire to acquire specific knowledge and skills, and to participate fully as team members with child welfare officials in order to be more helpful to the children they serve.
Coherence properties of a 2D trapped Bose gas around the superfluid transition
Creators: name: Plisson, T.
name: Allard, B.
name: Holzmann, M.
name: Salomon, G.
name: Aspect, Alain
name: Bouyer, Philippe
name: Bourdel, Thomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We measure the momentum distribution of a 2D trapped Bose gas and observe the increase of the range of coherence around the Berezinskii-Kosterlitz-Thouless (BKT) transition. We quantitatively compare our observed profiles to both a Hartee-Fock mean-field theory and to quantum Monte-Carlo simulations. In the normal phase, we already observe a sharpening of the momentum distribution. This behavior is partially captured in a mean-field approach, in contrast to the physics of the BKT transition.
Fluid motion for reducing the bounce of partially filled containers
Creators: name: Andrade, Klebbert
name: Catalán, Javiera
name: Marín, Juan F.
name: Salinas, Vicente
name: Castillo, Gustavo
name: Gordillo, Leonardo
name: Gutiérrez, Pablo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Certain spatial distributions of water inside partially filled containers can significantly reduce the bounce of the container. In experiments with containers filled to a volume fraction $ϕ$, we show that rotation offers control and high efficiency in setting such distributions and, consequently, in altering bounce markedly. High-speed imaging evidences the physics of the phenomenon and reveals a rich sequence of fluid-dynamics processes, which we translate into a model that captures our overall experimental findings.
description: Submitted to Physical Review Letters
Phenomenological and microscopic cluster models II. Phase transitions
Creators: name: Fraser, P. R.
name: Yépez-Martínez, H.
name: Hess, P. O.
name: Lévai, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Based on the results of a previous paper (Paper I), by performing the geometrical mapping via coherent states, phase transitions are investigated and compared within two algebraic cluster models. The difference between the Semimicroscopic Algebraic Cluster Model (SACM) and the Phenomenological Algebraic Cluster Model (PACM) is that the former strictly observes the Pauli exclusion principle between the nucleons of the individual clusters, while the latter ignores it. From the technical point of view the SACM is more involved mathematically, while the formalism of the PACM is closer to that of other algebraic models with different physical content. First- and second-order phase transitions are identified in both models, while in the SACM a critical line also appears. Analytical results are complemented with numerical studies on α-cluster states of the neon-20 and magnesium-24 nuclei.
description: 11 pages, 13 figures, part two of a two part work
Imaginary-time method for radiative capture reaction rate
Creators: name: Yabana, Kazuhiro
name: Funaki, Yasuro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose a new computational method for astrophysical reaction rate of radiative capture process. In the method, an evolution of a wave function is calculated along the imaginary-time axis which is identified as the inverse temperature. It enables direct evaluation of reaction rate as a function of temperature without solving any scattering problem. The method is tested for two-body radiative capture reaction, ${^{16}{\rm O}}(α,γ){^{20}{\rm Ne}}$, showing that it gives identical results to that calculated by the ordinary procedure. The new method will be suited for calculation of triple-alpha radiative capture rate for which an explicit construction of the scattering solution is difficult.
description: 8 pages, 7 figures
On the Mean Square Error Optimal Estimator in One-Bit Quantized Systems
Creators: name: Fesl, Benedikt
name: Koller, Michael
name: Utschick, Wolfgang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper investigates the mean square error (MSE)-optimal conditional mean estimator (CME) in one-bit quantized systems in the context of channel estimation with jointly Gaussian inputs. We analyze the relationship of the generally nonlinear CME to the linear Bussgang estimator, a well-known method based on Bussgang's theorem. We highlight a novel observation that the Bussgang estimator is equal to the CME for different special cases, including the case of univariate Gaussian inputs and the case of multiple pilot signals in the absence of additive noise prior to the quantization. For the general cases we conduct numerical simulations to quantify the gap between the Bussgang estimator and the CME. This gap increases for higher dimensions and longer pilot sequences. We propose an optimal pilot sequence, motivated by insights from the CME, and derive a novel closed-form expression of the MSE for that case. Afterwards, we find a closed-form limit of the MSE in the asymptotically large number of pilots regime that also holds for the Bussgang estimator. Lastly, we present numerical experiments for various system parameters and for different performance metrics which illuminate the behavior of the optimal channel estimator in the quantized regime. In this context, the well-known stochastic resonance effect that appears in quantized systems can be quantified.
Pseudo scalar dark matter in a generic U$(1)_X$ model
Creators: name: Gola, Shivam
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a $U(1)_X$ extension of the Standard Model~(SM), where the spontaneous breaking of $U(1)_X$ gauge group results in a pseudo scalar particle which is the proposed candidate for dark matter. In the model, we introduce three right-handed neutrinos~(RHNs) $N_R^i$ and two extra scalars $Φ$, $χ$, which are SM gauge singlets but charged under $U(1)_X$ gauge group. Right-handed neutrinos are required to have the model anomaly free and explain the neutrino oscillation data. The heaviest scalar breaks the $U(1)_X$ gauge symmetry and the other extra scalar gives a pseudo scalar DM candidate. A pseudo scalar dark matter~(DM) is an interesting candidate as it naturally evades the stringent direct detection bounds due to its coupling structure. We study the phenomenology of this pseudo-scalar DM while considering several theoretical and experimental constraints. We find that in our model, there is a feasible parameter space, which satisfies by the DM lifetime bound, relic and direct detection constraints while respecting the colliders and other bounds.
description: 16 pages, 6 figures, Matches with the accepted version of the publication
Private
Creators: name: Grana, Justin
name: Russell, Adam
name: Yiling Chen
name: Johannesson, Magnus
name: Frank, Aaron
name: Almenberg, Anna Dreber
name: Twardy, Charles R.
name: Pfeiffer, Thomas
name: Holzmeister, Felix
name: Viganola, Domenico
Publisher: name: Open Science Framework
Year: 2023

description: Private data for KeyW's Replication Markets team for DARPA SCORE, including pre-registration material. Documents containing the precise Surrogate Scoring formulas are private - these should not be revealed to forecasters during the contest.
Electron-phonon scattering in topological insulator thin films
Creators: name: Giraud, Sébastien
name: Kundu, Arijit
name: Egger, Reinhold
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a theoretical study of electron-phonon scattering effects in thin films made of a strong topological insulator. Phonons are modelled by isotropic elastic continuum theory with stress-free boundary conditions, and the interaction with the helical surface Dirac fermions is mediated by the deformation potential. We determine the temperature-dependent electrical resistivity $ρ(T)$ and the quasiparticle decay rate $Γ(T)$ observable in photoemission. The low- and high-temperature power laws for both quantities are obtained analytically. Detailed estimates covering the full temperature range are provided for Bi$_2$Se$_3$.
description: 11 pages, 6 figures
Diamond OA Sustainability Check Statements
Creators: name: Consortium of the DIAMAS project
Publisher: name: Zenodo
Year: 2024
Subjects: Diamond Open Access
Diamond OA
Financial sustainability
Institutional publishing
Costs
Scholarly communication
Ressources
Diamond OA Sustainability

description: This document includes a question list from the Diamond OA Sustainability Check tool. This list of statements can be used to assess the financial sustainability of your institutional publishing, including related services or infrastructure. We encourage you to download it.

It can be used in parallel to or instead of the digital Diamond OA Sustainability Check tool at:https://diamas.fecyt.es/.
Quantum affine vertex algebras associated to untwisted quantum affinization algebras
Creators: name: Kong, Fei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: Let $\mathcal U_\hbar(\hat{\mathfrak g})$ be the untwisted quantum affinization of a symmetrizable quantum Kac-Moody algebra $\mathcal U_\hbar({\mathfrak g})$. For $\ell\in\mathbb C$, we construct an $\hbar$-adic quantum vertex algebra $V_{\hat{\mathfrak g},\hbar}(\ell,0)$, and establish a one-to-one correspondence between $ϕ$-coordinated $V_{\hat{\mathfrak g},\hbar}(\ell,0)$-modules and restricted $\mathcal U_\hbar(\hat{\mathfrak g})$-modules of level $\ell$. Suppose that $\ell$ is a positive integer. We construct a quotient $\hbar$-adic quantum vertex algebra $L_{\hat{\mathfrak g},\hbar}(\ell,0)$ of $V_{\hat{\mathfrak g},\hbar}(\ell,0)$, and establish a one-to-one correspondence between certain $ϕ$-coordinated $L_{\hat{\mathfrak g},\hbar}(\ell,0)$-modules and restricted integrable $\mathcal U_\hbar(\hat{\mathfrak g})$-modules of level $\ell$. Suppose further that ${\mathfrak g}$ is of finite type. We prove that $L_{\hat{\mathfrak g},\hbar}(\ell,0)/\hbar L_{\hat{\mathfrak g},\hbar}(\ell,0)$ is isomorphic to the simple affine vertex algebra $L_{\hat{\mathfrak g}}(\ell,0)$.
Stoney ethnobotany: an indication of cultural change amongst Stoney women of Morley, Alberta
Creators: name: Scott-Brown, Joan M.
Publisher: name: University of Calgary
Year: 1977
Subjects: subject: E 99 A84 S366 1977 Microfiche
subject: Stoney Indians - Food
subject: Stoney Indians - Medicine
subject: Stoney Indians - Social life and customs

description: Bibliography: p. 155-168.
description: Ethnobotany describes man's relationship and interaction with the plant world in which he lives. Knowledge of plants from which food, shelter, clothing and medicines were obtained,was part of the cultural heritage of the Amerind peoples and assumed an integral part of their life style. Using the Ethnobotanical knowledge of three generations of Stoney women, this study seeks to ascertain the continued use of this information today (now that it is no longer necessary for daily survival) maintaining that a disuse constitutes a cultural loss of traditional material. A contemporary and historical perspective of the Stoney Indians of Morley, Alberta is presented as background information, against which this study of cultural change can be viewed.
Clustering of Mobile Ad Hoc Networks: An Adaptive Broadcast Period Approach
Creators: name: Gavalas, Damianos
name: Pantziou, Grammati
name: Konstantopoulos, Charalampos
name: Mamalis, Basilis
Publisher: name: arXiv
Year: 2011
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Organization, scalability and routing have been identified as key problems hindering viability and commercial success of mobile ad hoc networks. Clustering of mobile nodes among separate domains has been proposed as an efficient approach to address those issues. In this work, we introduce an efficient distributed clustering algorithm that uses both location and energy metrics for cluster formation. Our proposed solution mainly addresses cluster stability, manageability and energy efficiency issues. Also, unlike existing active clustering methods, our algorithm relieves the network from the unnecessary burden of control messages broadcasting, especially for relatively static network topologies. This is achieved through adapting broadcast period according to mobile nodes mobility pattern. The efficiency, scalability and competence of our algorithm against alternative approaches have been demonstrated through simulation results.
description: 7 pages, 9 figures; IEEE International Conference on Communications, 2006. ICC '06
The Heisenberg antiferromagnet on the kagome lattice with arbitrary spin: A high-order coupled cluster treatment
Creators: name: Götze, O.
name: Farnell, D. J. J.
name: Bishop, R. F.
name: Li, P. H. Y.
name: Richter, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Starting with the sqrt{3} x sqrt{3} and the q=0 states as reference states we use the coupled cluster method to high orders of approximation to investigate the ground state of the Heisenberg antiferromagnet on the kagome lattice for spin quantum numbers s=1/2,1,3/2,2,5/2, and 3. Our data for the ground-state energy for s=1/2 are in good agreement with recent large-scale density-matrix renormalization group and exact diagonalization data. We find that the ground-state selection depends on the spin quantum number s. While for the extreme quantum case, s=1/2, the q=0 state is energetically favored by quantum fluctuations, for any s>1/2 the sqrt{3} x sqrt{3} state is selected. For both the sqrt{3} x sqrt{3} and the q=0 states the magnetic order is strongly suppressed by quantum fluctuations. Within our coupled cluster method we get vanishing values for the order parameter (sublattice magnetization) M for s=1/2 and s=1, but (small) nonzero values for M for s>1. Using the data for the ground-state energy and the order parameter for s=3/2,2,5/2, and 3 we also estimate the leading quantum corrections to the classical values.
description: 7 pages, 6 figures
Regulatory elements within repeated elements : a case study of NAIP transcriptional innovation
Creators: name: Romanish, Mark Taras
Publisher: name: University of British Columbia
Year: 2009

description: Neuronal Apoptosis Inhibitory Protein (NAIP, also known as BIRC1) is a member of the conserved Inhibitor of Apoptosis Protein (IAP) family. However, it is no longer principally considered an apoptosis inhibitor since its domain structure and functions in innate immunity also warrant inclusion in the Nod-Like Receptor (NLR) superfamily. Lineage-specific rearrangement and expansion of this locus have yielded different copy numbers among primates and rodents, providing an interesting case study in which to study transcriptional regulatory changes by a rapidly evolving gene. In the first stage of my thesis, I show that NAIP has multiple promoters sharing no similarity between human and rodents. Moreover, I demonstrate that multiple, domesticated long terminal repeats (LTRs) of endogenous retroviral (ERV) elements provide NAIP promoter function in human, mouse and rat. In human, an LTR serves as a tissue-specific promoter active primarily in testis. However, in rodents, our evidence indicates that an ancestral LTR common to all rodent genes is the major, constitutive promoter for these genes and that a second LTR found in two of the mouse genes is a minor promoter. Thus, independently acquired LTRs have assumed regulatory roles for orthologous genes, a remarkable evolutionary scenario. It is also demonstrated that 5’ flanking regions of IAP family genes as a group, in both human and mouse, are enriched for LTR insertions compared to average genes. In the second stage of my thesis, I demonstrate that several of the human NAIP paralogues are expressed, and that novel transcripts arise from both internal and upstream transcription start sites. Remarkably, two internal start sites initiate within Alu short interspersed element (SINE) retrotransposons, and a third novel transcription start site exists within the final intron of the GUSBP1 gene, upstream of only two NAIP copies. One Alu functions alone as a promoter in transient assays, while the other likely combines with upstream L1 sequences to form a composite promoter. The novel transcripts encode shortened open reading frames and I show that corresponding proteins are translated in a number of cell lines and primary tissues, in some cases above the level of full length NAIP. Interestingly, some NAIP isoforms lack their caspase-sequestering motifs, indicating that they have novel functions. My results support an important role for transposable elements in NAIP evolution, particularly as transcriptional regulatory modules, and illustrate a fascinating example of regulatory innovations adopted by a rapidly evolving gene.
Microplankton zones of the Savik Formation (Jurassic) Axel Heiberg and Ellesmere Islands, District of Franklin
Creators: name: Johnson, C. D.
Publisher: name: University of Calgary
Year: 1972
Subjects: subject: QE 733 J64 1972
subject: Paleontology - Jurassic
subject: Micropaleontology
subject: Geology, Stratigraphic - Jurassic
subject: Paleontology - Canada, Northern

description: Bibliography: p. <52-57>.
An anomalous hydrodynamics for chiral superfluid
Creators: name: Lin, Shu
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Starting from low energy effective chiral Lagrangian with gauged Wess-Zumino Witten term, we have derived a hydrodynamic theory for chiral superfluid. It is a non-abelian hydrodynamics at zero temperature with only superfluid components. With an external electromagnetic field and baryonic and axial baryonic chemical potentials turned on, we are able to identify analogs of various anomaly induced term in normal hydrodynamics, including chiral vortical effect, chiral magnetic effect and chiral electric effect. As an example, we solved the hydrodynamic equations for the ground state and observed the chiral magnetic effect and chiral separation in the confined phase.
description: 21 pages
Radio continuum emission and HI gas accretion in the NGC 5903/5898 compact group of early-type galaxies
Creators: name: Gopal-Krishna
name: Mhaskey, Mukul
name: Wiita, Paul J.
name: Sirothia, S. K.
name: Kantharia, N. G.
name: Ishwara-Chandra, C. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We discuss the nature of the multi-component radio continuum and HI emission associated with the nearby galaxy group comprised of two dominant ellipticals, NGC 5898 and NGC 5903, and a dwarf lenticular ESO514-G003. Striking new details of radio emission are unveiled from the 2nd Data Release of the ongoing TIFR.GMRT.SKY.SURVEY (TGSS) which provides images with a resolution of ~ 24 arcsec x 18 arcsec and a typical rms noise of 5 mJy at 150 MHz. Previous radio observations of this compact triplet of galaxies include images at higher frequencies of the radio continuum as well as HI emission, the latter showing huge HI trails originating from the vicinity of NGC 5903 where HI is in a kinematically disturbed state. The TGSS 150 MHz image has revealed a large asymmetric radio halo around NGC 5903 and also established that the dwarf SO galaxy ESO514-G003 is the host to a previously known bright double radio source. The radio emission from NGC 5903 is found to have a very steep radio spectrum (α ~ -1.5) and to envelope a network of radio continuum filaments bearing a spatial relationship to the HI trails. Another noteworthy aspect of this triplet of early-type galaxies highlighted by the present study is that both its radio loud members, namely NGC 5903 and ESO514-G003, are also the only galaxies that are seen to be connected to an HI filament. This correlation is consistent with the premise that cold gas accretion is of prime importance for triggering powerful jet activity in the nuclei of early-type galaxies.
description: 14 pages, 3 figures, Accepted for publication in MNRAS
A systematic review and meta-analysis of the prevalence of breast cancer in Africa: understanding the burden of breast cancer
Creators: name: Aduse-Poku, Livingstone
name: Arring, Noel
name: Fernando, Kurt
name: Harb, Rayya
name: Antwi, Sylvester
name: Fossi, Sabrina
name: Vermeulen, Kate
name: Walker, Eleanor
name: Jiagge, Evelyn
Publisher: name: My University
Year: 2021
Subjects: subject: Breast Cancer, Prevalence, Africa
subject: Nursing
subject: FOS: Health sciences
subject: Health Sciences

description: Worldwide, breast cancer is the most common cancer in women. African women have a high mortality rate from breast cancer because of poor health infrastructure, incomplete vital registries, delayed health-seeking behavior, and low population awareness. and meta-analyses on breast cancers in Africa have used incidence and mortality rates as their frequency measures. Since most breast cancers are considered chronic diseases, it is particularly important to measure its prevalence in African populations. Our meta-analysis aims to exam the prevalence of breast cancer as a whole, the prevalence of the TNBC subtype among breast cancer patients, and the practice of the various screening modalities among women across Africa.
Mantle cell lymphoma pathogenesis
Creators: name: DeLeeuw, Ronald John
Publisher: name: University of British Columbia
Year: 2009

description: Mantle cell lymphoma (MCL) is an aggressive non-Hodgkin’s lymphoma with a median patient survival time of 3 years. Although the characteristic t(11;14)(q13;q32) is found in virtually all cases, experimental evidence suggests that this event alone is insufficient to result in lymphoma and secondary genomic alterations are required. Therefore, secondary genetic alterations have been proposed as essential in MCL pathogenesis. Within this thesis I describe the creation of a novel assay to determine segmental copy number alterations at a previously unprecedented resolution. This new assay necessitated the development of new analytical software to visualize and analyze the high density data sets created. The creation of this software is described in detail. With these tools in place we assayed model genomes of MCL for recurrent segmental copy number alterations. These recurrent regions were defined; however, among these were copy number variations that appeared in both cases and controls. Investigation of these natural copy number variations in this thesis revealed that the human genome has a higher plasticity than previously appreciated. In fact, thousands of loci within the genome were found to be variable in copy number that may influence sensory perception and possibly disease susceptibility. I next investigated the genomes of MCL tumor samples to determine which somatic copy number alterations are related to a poor clinical course. Among the numerous loci that showed frequent copy number alterations in MCL genomes, many were associated with poor patient outcome. Among these, the loss of 9p21 was a strong factor in determining the clinical course of patients with MCL (P=0.0004). Three additional loci (4q13, 8q24, and 13q14) were combined with 9p21 to create a survival model that was very predictive of patient outcome (P=5.87 x 10-6). Interestingly, a previously uncharacterized locus (4q13) was within this survival model. Investigating this locus further revealed that the expression of two genes (CCNG2 and CCNI) influences the overall survival of patients with MCL (P=0.0292 and 0.0201, respectively).
Joseph Beuys: Ausstellungen und Aktionen in der Galerie 'art intermedia' / Joseph Beuys: Exhibitions and Actions at 'art intermedia' Gallery
Creators: name: Herzog, Günter
Publisher: name: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts
Year: 2020

description: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts, No 31 (2020): Sediment
The characterization of the distant blazar GB6 J1239+0443 from flaring and low activity periods
Creators: name: Pacciani, L.
name: Donnarumma, I.
name: Denney, K. D.
name: Assef, R. J.
name: Ikejiri, Y.
name: Yamanaka, M.
name: Uemura, M.
name: Domingo, A.
name: Giommi, P.
name: Tarchi, A.
name: Verrecchia, F.
name: Longo, F.
name: Rainó, S.
name: Giusti, M.
name: Vercellone, S.
name: Chen, A. W.
name: Striani, E.
name: Vittorini, V.
name: Tavani, M.
name: Bulgarelli, A.
name: Giuliani, A.
name: Pucella, G.
name: Argan, A.
name: Barbiellini, G.
name: Caraveo, P.
name: Cattaneo, P. W.
name: Colafrancesco, S.
name: Costa, E.
name: De Paris, G.
name: Del Monte, E.
name: Di Cocco, G.
name: Evangelista, Y.
name: Ferrari, A.
name: Feroci, M.
name: Fiorini, M.
name: Fuschino, F.
name: Galli, M.
name: Gianotti, F.
name: Labanti, C.
name: Lapshov, I.
name: Lazzarotto, F.
name: Lipari, P.
name: Marisaldi, M.
name: Mereghetti, S.
name: Morelli, E.
name: Moretti, E.
name: Morselli, A.
name: Pellizzoni, A.
name: Perotti, F.
name: Piano, G.
name: Picozza, P.
name: Pilia, M.
name: Prest, M.
name: Rapisarda, M.
name: Rappoldi, A.
name: Rubini, A.
name: Sabatini, S.
name: Soffitta, P.
name: Trifoglio, M.
name: Trois, A.
name: Vallazza, E.
name: Zanello, D.
name: Pittori, C.
name: Santolamazza, P.
name: Lucarelli, F.
name: Salotti, L.
name: Valentini, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In 2008 AGILE and Fermi detected gamma-ray flaring activity from the unidentified EGRET source 3EG J1236+0457, recently associated with a flat spectrum radio quasar GB6 J1239+0443 at z=1.762. The optical counterpart of the gamma-ray source underwent a flux enhancement of a factor 15-30 in 6 years, and of ~10 in six months. We interpret this flare-up in terms of a transition from an accretion-disk dominated emission to a synchrotron-jet dominated one. We analysed a Sloan Digital Sky Survey (SDSS) archival optical spectrum taken during a period of low radio and optical activity of the source. We estimated the mass of the central black hole using the width of the CIV emission line. In our work, we have also investigated SDSS archival optical photometric data and UV GALEX observations to estimate the thermal-disk emission contribution of GB6 J1239+0443. Our analysis of the gamma-ray data taken during the flaring episodes indicates a flat gamma-ray spectrum, with an extension of up to 15 GeV, with no statistically-relevant sign of absorption from the broad line region, suggesting that the blazar-zone is located beyond the broad line region. This result is confirmed by the modeling of the broad-band spectral energy distribution (well constrained by the available multiwavelength data) of the flaring activity periods and by the accretion disk luminosity and black hole mass estimated by us using archival data.
description: 30 pages, 7 figures, 4 tables MNRAS Accepted on 2012 June 18
Robert Filliou: 'Solidaritätsveranstaltung für Angela Davis', 31. Oktober 1971 / Robert Filliou: 'Solidarity Event for Angela Davis', October 31, 1971
Creators: name: Renswou, Brigitte Jacobs Van
Publisher: name: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts
Year: 2020

description: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts, No 31 (2020): Sediment
Das Trierer Mysterienmosaik und das ägyptische Ur-Ei
Creators: name: Parlasca, Klaus
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 20 Nr. 1/2 (1951): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Chromyl chloride oxidation of cyclic alkenes and chemical constituents of Letharia Vulpina (L) HUE
Creators: name: Cheriyan, Ukken Ouseph
Publisher: name: University of Calgary
Year: 1972
Subjects: subject: QD 281 O9 C46 1972
subject: Oxidation
subject: Chemistry, Organic
subject: Lichens
subject: Cyclic Alkene
subject: Chromyl chloride

description: Bibliography: p. 144-145.
Asymptotic normalization of mirror states and the effect of couplings
Creators: name: Titus, L. J.
name: Capel, P.
name: Nunes, F. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Assuming that the ratio between asymptotic normalization coefficients of mirror states is model independent, charge symmetry can be used to indirectly extract astrophysically relevant proton capture reactions on proton-rich nuclei based on information on stable isotopes. The assumption has been tested for light nuclei within the microscopic cluster model. In this work we explore the Hamiltonian independence of the ratio between asymptotic normalization coefficients of mirror states when deformation and core excitation is introduced in the system. For this purpose we consider a phenomenological rotor + N model where the valence nucleon is subject to a deformed mean field and the core is allowed to excite. We apply the model to 8Li/8B, 13C/13N, 17O/17F, 23Ne/23Al, and 27Mg/27P. Our results show that for most studied cases, the ratio between asymptotic normalization coefficients of mirror states is independent of the strength and multipolarity of the couplings induced. The exception is for cases in which there is an s-wave coupled to the ground state of the core, the proton system is loosely bound, and the states have large admixture with other configurations. We discuss the implications of our results for novae.
description: 8 pages, 2 figures, submitted to PRC
Twist accumulation in conformal field theory. A rigorous approach to the lightcone bootstrap
Creators: name: Pal, Sridip
name: Qiao, Jiaxin
name: Rychkov, Slava
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove that in any unitary CFT, a twist gap in the spectrum of operator product expansion (OPE) of identical scalar primary operators (i.e. $ϕ\times ϕ$) implies the existence of a family of primary operators $\mathcal{O}_{τ, \ell}$ with spins $\ell \rightarrow \infty$ and twists $τ\rightarrow 2 Δ_ϕ$ in the same OPE spectrum. A similar twist-accumulation result is proven for any two-dimensional Virasoro-invariant, modular-invariant, unitary CFT with a normalizable vacuum and central charge $c > 1$, where we show that a twist gap in the spectrum of Virasoro primaries implies the existence of a family of Virasoro primaries $\mathcal{O}_{h, \bar{h}}$ with $h \rightarrow \infty$ and $\bar{h} \rightarrow \frac{c - 1}{24}$ (the same is true with $h$ and $\bar{h}$ interchanged). We summarize the similarity of the two problems and propose a general formulation of the lightcone bootstrap.
description: 35+10 pages, 1 figure. v2: minor changes, typos corrected. v3: version accepted for publication by Comm.Math.Phys., with minor changes, typos corrected and references added
Der ehemalige kurtrierische Hof in Frankfurt am Main
Creators: name: Michel, Fritz
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 20 Nr. 1/2 (1951): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Speeding-up $q$-gram mining on grammar-based compressed texts
Creators: name: Goto, Keisuke
name: Bannai, Hideo
name: Inenaga, Shunsuke
name: Takeda, Masayuki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: We present an efficient algorithm for calculating $q$-gram frequencies on strings represented in compressed form, namely, as a straight line program (SLP). Given an SLP $\mathcal{T}$ of size $n$ that represents string $T$, the algorithm computes the occurrence frequencies of all $q$-grams in $T$, by reducing the problem to the weighted $q$-gram frequencies problem on a trie-like structure of size $m = |T|-\mathit{dup}(q,\mathcal{T})$, where $\mathit{dup}(q,\mathcal{T})$ is a quantity that represents the amount of redundancy that the SLP captures with respect to $q$-grams. The reduced problem can be solved in linear time. Since $m = O(qn)$, the running time of our algorithm is $O(\min\{|T|-\mathit{dup}(q,\mathcal{T}),qn\})$, improving our previous $O(qn)$ algorithm when $q = Ω(|T|/n)$.
Inhalt des 20. Jahrgangs
Creators: name: Redaktion, Die
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 20 Nr. 1/2 (1951): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Quantum Corrections for ABGB Black Hole
Creators: name: Sharif, M.
name: Javed, Wajiha
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study quantum corrections to the temperature and entropy of a regular Ayón-Beato-Garc\'ıa-Bronnikov black hole solution by using tunneling approach beyond semiclassical approximation. We use the first law of black hole thermodynamics as a differential of entropy with two parameters, mass and charge. It is found that the leading order correction to the entropy is of logarithmic form. In the absence of the charge, i.e., $e=0$, these corrections approximate the corresponding corrections for the Schwarzschild black hole.
description: 15 pages, accepted for publication in Astrophysics and Space Science
Facilitating African-European R&D Partnership in Earth Observation Through Collaborative Research: EO AFRICA R&D Research Calls
Creators: name: Girgin, Serkan
name: Vekerdy, Zoltán
name: Farnaghi, Mahdi
name: Chavarro-Rincón, Diana
Publisher: name: Zenodo
Year: 2024
Subjects: africa
water scarcity
food security
earth observation
capacity development
research funding
esa

description: The EO AFRICA R&D Facility is the flagship of the EO AFRICA initiative that aims to facilitate the sustainable adoption of EO and related space technology in Africa through an African-European R&D partnership. For this purpose, the Facility supports capacity development for research by organizing tailor-made domain-specific training courses and webinars, and capacity development through research by enabling research projects co-developed and run by African and European research tandems.

During its first phase in 2021-2024, the Facility launched two research project calls to support African-European collaborative efforts in developing innovative, open source EO algorithms and applications adapted to African solutions to African challenges by using cutting-edge cloud-based data access and computing infrastructure. The calls aimed at addressing emerging research topics in food security and water scarcity, making full use of the digital transformation in Africa and the observation capabilities of the ESA and Third Party EO missions. More than 100 project proposals were submitted by African and European co-investigators affiliated with public and private research institutions in 28 African and 17 European countries and covering a wide range of topics such as crop monitoring, yield forecasting, climate change, flood mapping, livestock mapping, soil monitoring, lake monitoring, biodiversity, etc. Following an exhaustive peer-review and evaluation process considering 33 criteria grouped under 6 categories, including qualifications of the project team, scientific quality of the proposed work, innovation and impact potentıal, use of EO data, use of cloud-based ICT infrastructure, and budget, the Facility provided financial support and ICT infrastructure to 30 research projects. Each project developed an innovative algorithm or research workflow delivered as open-source research code, preferably as interactive notebooks, together with open-access research data. The results of the research projects are also published as open-access scientific publications.

In this presentation, first, the details of the research calls will be described starting for the preparation of the call, up to the closure of the research projects, with a special emphasis on the evaluation process. Then, an overview of the submitted proposals will be provided including research questions, EO data and analysis methods, work and budget distribution, geographical distribution, and gender balance. The results of the funded projects will be summarized and finally, the lessons learned from the research calls will be discussed in detail, including challenges in using cloud computing infrastructure, performing collaborative research as tandems, budget utilization, and Open Science practices.
A Climatological investigation of air pollutants in Calgary's urban heat island
Creators: name: Lunn, Gerald R.
Publisher: name: University of Calgary
Year: 1974
Subjects: subject: TD 833.7 C34 L85 1974 Microfiche
subject: Air - Pollution - Alberta - Calgary
subject: Calgary (Alta.) - Climate

description: Bibliography: p. <124-129>.
Nuclear spin relaxation in cold atom-molecule collisions
Creators: name: Hermsmeier, Rebekah
name: Xing, Xiaodong
name: Tscherbul, Timur V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore the quantum dynamics of nuclear spin relaxation in cold collisions of $^1Σ^+$ molecules with structureless atoms in an external magnetic field. To this end, we develop a rigorous coupled-channel methodology, which accounts for rotational and nuclear spin degrees of freedom of $^1Σ^+$ molecules, their interaction with an external magnetic field, as well as for anisotropic atom-molecule interactions. We apply the methodology to study collisional relaxation of the nuclear spin sublevels of $^{13}$CO molecules immersed in a cold buffer gas of $^4$He atoms. We find that nuclear spin relaxation in the ground rotational manifold of CO occurs extremely slowly due to the absence of direct couplings between the nuclear spin sublevels. The rates of collisional transitions between the $N=1$ nuclear spin states of CO are generally much higher due to the direct nuclear spin-rotation coupling between the states. These transitions obey selection rules, which depend on the values of space-fixed projections of rotational and nuclear spin angular momenta for the initial and final molecular states. For some initial states, we also observe a strong magnetic field dependence, which can be understood using the first Born approximation. We use our calculated nuclear spin relaxation rates to investigate the thermalization of a single nuclear spin state of CO$(N=0)$ immersed in a cold buffer gas of He. The calculated nuclear spin relaxation times ($T_1\simeq 0.5$ s at $T=1$ K) display a steep temperature dependence decreasing rapidly at elevated temperatures due to the increased population of rotationally excited states, which undergo nuclear spin relaxation at a much faster rate. Thus, long relaxation times of $N=0$ nuclear spin states in cold collisions with buffer gas atoms can only be maintained at sufficiently low temperatures ($kT\ll 2B_e$), where $B_e$ is the rotational constant.
description: 41 pages, 12 figures
Vertical temperature structure of Calgary's urban heat island
Creators: name: Leggat, Keith Roderick
Publisher: name: University of Calgary
Year: 1978
Subjects: subject: QC 981.7 U7 L43 1978 Microfiche
subject: Urban heat island - Alberta - Calgary

description: Bibliography: p. 138-144.
description: The construction of cities measurably alters the climate of their environment. These changes are expressed both near the ground surface and up to levels of the order of 100 m above the city. Urban heat island is the phrase applied to the air layer which experiences temperature changes resulting from urbanization. Temperatures near the surface are at a maximum in the downtown and industrial areas. The difference between urban and rural temperatures is dependent on cultural elements such as building density and anthropogenic heat and meteorological factors such as mixing depth and wind speed. The build-up of heat near the city surface also influences vertical temperature profiles. Stability is decreased and many times inversions are destroyed over cities. This study attempts to expand the understanding of the urban heat island near the surface to its behavior in the lower several hundred meters of the atmosphere. This is accomplished by using data collected by instrumented helicopter, some of which were available before the study, and other data which were collected particularly for this study. Ancillary data sources include radiosondes, pibals, thermographs, anemometers, instrumented tower, and air quality instrumentation. These data are used to define mean temperature profiles in Calgary's urban heat island and the frequencies of various types of profiles in different areas of the city. Maximum instability is associated with the inner city while mean mixing depths are highest over the downtown and industrial areas. The analysis of temporal variability of temperature structure points to a very stable lower atmosphere from late afternoon to late morning on most days during winter at Calgary. The analysis showed that stability in the lower atmosphere is greatest during chinook weather as compared to cyclonic and anticyclonic activity. Suggestions for further study and implementation of present knowledge are outlined.
Electroweak Effects in Neutral Current Drell-Yan Processes within SANC System
Creators: name: Arbuzov, A.
name: Bondarenko, S.
name: Dydyshka, Ya.
name: Kalinovskaya, L.
name: Sadykov, R.
name: Yermolchyk, V.
name: Yermolchyk, Yu.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The complete one-loop electroweak radiative corrections to the neutral current Drell-Yan process $pp \to \ell^+\ell^- X$ are presented for the case of longitudinal polarization of initial particles. The calculations are based on the SANC computer system. The paper contains a brief description of the SANC approach and a discussion of the sources of theoretical uncertainties in electroweak effects.
The Stability and reactivity of some alkythiolates of tungsten and molybdenum
Creators: name: O'Dell, Brenda Dale
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: QD 412 W1 O32 1978 Microfiche
subject: Organotungsten compounds
subject: Organomolybdenum compounds

description: Bibliography: p. 93-98.
Früh- und hochmittelalterliche Fibeln aus dem Stadtgebiet von Soest
Creators: name: Ricken, Julia
Publisher: name: Archäologie in Westfalen-Lippe
Year: 2020

description: -
description: Archäologie in Westfalen-Lippe, ARCHÄOLOGIE IN WESTFALEN-LIPPE 2018 (2019)
The `harder when brighter' X-ray behaviour of the low luminosity active galactic nucleus NGC 7213
Creators: name: Emmanoulopoulos, D.
name: Papadakis, I. E.
name: McHardy, I. M.
name: Arevalo, P.
name: Calvelo, D. E.
name: Uttley, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first robust evidence of an anti-correlation between the X-ray photon index, Γ, and the X-ray luminosity in a single low luminosity active galactic nuclei (LLAGN), NGC 7213. Up to now, such anti-correlation trends have been seen only in large samples of LLAGN that span a wide range of X-ray fluxes, although the opposite behaviour (i.e. a positive correlation between Γand X-ray luminosity) has been extensively studied for individual X-ray bright active galactic nuclei. For NGC 7213, we use the long-term X-ray monitoring data of Rossi X-ray Timing Explorer (RXTE), regularly obtained on average every two days from March 2006 to December 2009. Based on our X-ray data, we derive the Γversus flux and the hardness ratio versus flux relations, indicating clearly that NGC 7213 follows a `harder when brighter' spectral behaviour. Additionally, by analysing radio and optical data, and combining data from the literature, we form the most complete spectral energy distribution (SED) of the source across the electromagnetic spectrum yielding a bolometric luminosity of 1.7*10^43 erg s^-1. Phenomenologically, the SED of NGC 7213 is similar to that of low-ionization nuclear emission-line region. The robust anti-correlation trend that we find between Γand X-ray luminosity together with the low accretion rate of the source, 0.14 per cent that of Eddington limit, make NGC 7213 the first LLAGN exhibiting a similar spectral behaviour with that of black hole X-ray binaries in `hard state'.
description: Accepted for publication in MNRAS. The paper is 9 pages long and contains 5 figures and 1 table
Perceptions of teachers and principals of the role expectations for the elementary school principal in the reading programme
Creators: name: Sackman, George John
Publisher: name: University of Calgary
Year: 1970
Subjects: subject: LB 1573 S32 1970 Microfilm
subject: Reading (Elementary)
subject: Elementary school principals
subject: Role expectation
subject: Teachers - Attitudes
subject: School superintendents and principals - Attitudes

description: Bibliography: p. 121-125.