cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Contribution to Proof-of-Location Systems
Creators: name: Akand, Md Mamunur Rashid
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: proof-of-location
subject: distance bounding protocol
subject: location information security
subject: location information privacy
subject: location-based services
subject: Computer Science

description: Proof-of-Location (POL) is a type of credential system that allows a user to obtain proof-of-location tokens (pol), attesting their visit to some location at some time, that they can later present to another party for receiving services. POL is gaining popularity due to its numerous applications, including location-based rewards, multi-factor authentication, and access control. POLs require a secure technique to verify the user’s location or proximity to a trusted infrastructure node as a prerequisite for issuing a pol token. Distance bounding protocols satisfy the required security properties that securely put an upper bound between two entities in real-time, and are thus considered an essential building block in designing proof-of-location systems. In this thesis, a number of shortcomings in POL systems and in distance bounding protocols are identified and addressed. The thesis is divided into two parts – the first part focuses on the modeling and designing of POL systems, physical attack on infrastructure nodes of POL systems, composability of POL with other protocols, user-controlled access of pol tokens, and verifying a sequence of pol tokens that are stored on an untrusted user’s device. The second part concentrates on the building block of POL systems – the distance bounding protocols, which offer cryptographic security to verify the proximity between two entities. The research aims to address the challenges of existing distance bounding protocols, such as high implementation costs and vulnerability to attacks using directional antennas and collusion of multiple users. Consequently, the contributions of this thesis are presented in five sections, each covering one or more research problems, including providing a solid foundation for the design and analysis of POL systems and designing provably secure POL schemes that protect user anonymity against pol issuer and verifier, protecting against location tampering attacks on infrastructure nodes, ensuring user-controlled pol accessibility when the user is offline, preserving security guarantees when POL is composed with other protocols, proving a subsequence of POL tokens while ensuring efficient storage and user anonymity, designing distance bounding protocols that do not require multiple rounds in the fast-exchange phase, and protecting distance bounding protocols from novel attacks while ensuring user anonymity.
Pliensbachian–Toarcian (Early Jurassic) extinction in western North America
Creators: name: Caruthers, Andrew Harry
Publisher: name: University of British Columbia
Year: 2013

description: The Pliensbachian–Toarcian marine extinction is observable at the species and generic levels. Ammonite diversity data from Europe and parts of the Arctic suggest a multi-phased event with diversity declining over six separate intervals. The main-phase of decline begins at the Pliensbachian–Toarcian boundary and extends into the Early Toarcian to a level correlative with the Tenuicostatum / Serpentinum Zone boundary. To date only this main-phase has been demonstrated as being global in extent, affecting multiple taxonomic groups. The entire Pliensbachian-Toarcian extinction has been attributed to regional and global controlling mechanisms associated with the Volcanic Greenhouse Scenario, an hypothesis linking eruption of the Karoo–Ferrar large igneous province (LIP) to global warming and mass extinction, specifically involving the release of methane hydrate from shelf reservoirs and a global marine anoxic event in the Early Toarcian (the T–OAE). The study presented herein uses paleontology and isotope geochemistry to investigate the duration and potential controlling mechanisms of this protracted extinction. A primary objective is to compare new data from western North America with previously established records in Europe, testing: 1) the multi-phased nature of this extinction, 2) its magnitude within two taxonomic groups (ammonoids and foraminifera) in western North America and 3) its controlling mechanisms, relating to methane hydrate release and geographic extent of the T-OAE. Results show that all six phases of species decline are recognizable in western North America, even the oldest episode which was previously thought to be an event restricted to the Tethys Ocean area of Europe. This research strongly supports a correlation between the timing of the entire multi-phased extinction and formation of the Karoo igneous province. The study also provides one of the first records of the Early Toarcian ‘negative carbon-isotope excursion’ outside the Tethys Ocean area (concomitant with the main-phase of extinction) which implicates global methane hydrate release. Lastly, geochemical results do not support the presence of an anoxic water mass in the northeast paleo Pacific Ocean at the time of the so-called global Toarcian event (T-OAE).
A Review of the Literature on Online Collaborative Learning in K- 12 and Post-Secondary Education During COVID 19
Creators: name: Tay, Sharmaine
Publisher: name: University of Calgary
Year: 2022
Subjects: COVID-19
Online teaching
Web-based instruction

description: This was Ms. Tay's PURE project completed the Summer of 2022.
description: The COVID-19 pandemic posed challenges to familiar instructional practices as the national and international response to a global pandemic precipitated a shift to online teaching and learning. This en masse transition offered a novel opportunity to examine the benefits and challenges of the now more widespread context of technologically mediated education and its impact on collaborative group learning. This conceptual review of the literature reports the findings on the impact of COVID-19 on collaborative learning in Education between the years 2020-2022. Twenty-nine of the 54 published articles from K-12 to post-secondary education contexts met the criteria established for this review and were included in the review. Three themes emerged from the review: 1) impacts of online learning on collaboration; 2) student responsibility; and 3) collaborative knowledge building. The literature on online learning and student responsibility described widely varied results with collaborative learning while the literature on online Knowledge Building learning environments indicated many of the issues had been anticipated and reported learning gains were maintained in the shift to online learning. Our review of the studies conducted during COVID-19 indicates a need for increased proactive intentional design to support learners in online learning environments.
Delivering pulsed and phase stable light to atoms of an optical clock
Creators: name: Falke, Stephan
name: Misera, Mattias
name: Sterr, Uwe
name: Lisdat, Christian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In optical clocks, transitions of ions or neutral atoms are interrogated using pulsed ultra-narrow laser fields. Systematic phase chirps of the laser or changes of the optical path length during the measurement cause a shift of the frequency seen by the interrogated atoms. While the stabilization of cw-optical links is now a well established technique even on long distances, phase stable links for pulsed light pose additional challanges and have not been demonstrated so far. In addition to possible temperature or pressure drift of the laboratory, which may lead to a Doppler shift by steadily changing the optical path length, the pulsing of the clock laser light calls for short settling times of stabilization locks. Our optical path length stabilization uses retro-reflected light from a mirror that is fixed with respect to the interrogated atoms and synthetic signals during the dark time. Length changes and frequency chirps are compensated for by the switching AOM. For our strontium optical lattice clock we have ensured that the shift introduced by the fiber link including the pulsing acousto optic modulator is below $2\cdot 10^{-17}$.
description: 10 pages, 8 figures; Applied Physics B - Lasers and Optics 2011
Implicazioni stilistiche della metrica giudiciana: L’enjambement ne La Vita in versi
Creators: name: Conte, Marco
Publisher: name: Università degli Studi di Milano
Year: 2011
Subjects: Giovanni Giudici, enjambement, metrica, semantica

description: Mediante l’analisi del ricorso all’enjambement nella raccolta poetica La Vita in versi di Giovanni Giudici, nella valutazione delle sue conseguenze metrico-ritmiche e della sua intensità, e nella descrizione delle sue implicazioni stilistico-espressive, si verifica l’interazione del livello metrico-semantico e del significante poetico nel determinare l’efficacia e la memorabilità dei versi della silloge, uno dei più notevoli episodi di realismo poetico del Novecento italiano.
description: ENTHYMEMA, No 5 (2011)
Nikolaj Ivanovič Nikolaev, La critica non ufficiale al «metodo formale» nella cultura russa degli anni ‘20
Creators: name: La Rocca, Giuseppina
Publisher: name: Università degli Studi di Milano
Year: 2011
Subjects: Formalismo, marxismo, Scuola filosofica di Nevel’, critica non ufficiale

description: Nell’ultima parte della traduzione del testo di Nikolaev viene conclusa la trattazione relativa alla critica non ufficiale al «metodo formale». Il saggio continua a discutere le posizioni di personalità quali Vinokur, Žirmunskij, Vinogradov, ma anche Pumpjanskij e Kagan alla luce della «periodizzazione» del metodo formale offerta da Bachtin ne Il metodo formale nella scienza della letteratura. Si riflette contestualmente sulle reazioni dei formalisti e sugli sviluppi dello stesso movimento, presentando i risvolti che esso ha avuto in Europa attraverso il prisma della storiografia occidentale.
description: ENTHYMEMA, No 5 (2011)
Stability of accelerating cosmology in two scalar-tensor theory: Little Rip versus de Sitter
Creators: name: Ito, Yusaku
name: Nojiri, Shin'ichi
name: Odintsov, Sergei D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We develop the general reconstruction scheme in two scalar model. The quintom-like theory which may describe (different) non-singular Little Rip or de Sitter cosmology is reconstructed. (In)stability of such dark energy cosmologies as well as the flow to fixed points is studied. The stability of Little Rip universe which leads to dissolution of bound objects sometime in future indicates that no classical transition to de Sitter space occurs.
description: LaTeX 27 pages, 12 figures, version appeared in Entropy
Technical Design Report: European XFEL DAQ and DM Computing – 2009 Public Version
Creators: name: Esenov, S.
name: Wrona, K.
name: Youngman,
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2009
Subjects: Physics

description: This document describes the proposed computing model for the initial phase of operation of the European XFEL (EuXFEL) facility. In recognition of the overlap and interdependence of online data acquisition (DAQ) and offline data management (DM), both online and offline handling will be reviewed. The DAQ scope covers the control and readout systems in the photon beam lines, experimental hutches, laser and computing rooms in the experimental hall, and interaction with the electron machine control system. It does not include office computing requirements. The DM scope covers offline systems downstream of the DAQ required for secure on-site data storage and analysis, and remote access to the data. Specific DAQ and DM hardware and software solutions and the IT services required, e.g. networking, access control, etc., by both are described. The scale, manpower and financial cost of the system based on the current understanding of EuXFEL operation are estimated. The understanding of EuXFEL operation will evolve continuously and will require modification of this note. This version of the DAQ and DM computing TDR is for public use and Appendix B, which
contains cost, manpower and time line estimates, has been removed.
Precision muon decay measurements and improved constraints on the weak interaction
Creators: name: TWIST Collaboration
name: Hillairet, A.
name: Bayes, R.
name: Bueno, J. F.
name: Davydov, Yu. I.
name: Depommier, P.
name: Faszer, W.
name: Gagliardi, C. A.
name: Gaponenko, A.
name: Gill, D. R.
name: Grossheim, A.
name: Gumplinger, P.
name: Hasinoff, M. D.
name: Henderson, R. S.
name: Hu, J.
name: Koetke, D. D.
name: MacDonald, R. P.
name: Marshall, G. M.
name: Mathie, E. L.
name: Mischke, R. E.
name: Olchanski, K.
name: Olin, A.
name: Openshaw, R.
name: Poutissou, J. -M.
name: Poutissou, R.
name: Selivanov, V.
name: Sheffer, G.
name: Shin, B.
name: Stanislaus, T. D. S.
name: Tacik, R.
name: Tribble, R. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The TWIST Collaboration has completed its measurement of the three muon decay parameters ρ, δ, and P_μξ. This paper describes our determination of ρ, which governs the shape of the overall momentum spectrum, and δ, which controls the momentum dependence of the parity-violating decay asymmetry. The results are ρ=0.74977\pm 0.00012(stat.)\pm 0.00023(syst.) and δ= 0.75049\pm 0.00021(stat.)\pm 0.00027(syst.). These are consistent with the value of 3/4 given for both parameters in the standard model, and each is over a factor of 10 more precise than the measurements published prior to TWIST. Our final results on ρ, δ, and P_μξhave been incorporated into a new global analysis of all available muon decay data, resulting in improved model-independent constraints on the possible weak interactions of right-handed particles.
description: 19 pages, 10 figures
Non-thermal Plasma Assisted Catalytic Upgrading of Low-cost Hydrocarbons
Creators: name: Meng, Shijun
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: Non-thermal plasma
subject: Catalysis
subject: Methane activation
subject: refinery
subject: Natural gas
subject: Engineering--Chemical
subject: Engineering--Petroleum
subject: Energy
subject: Materials Science

description: The catalytic upgrading of low-cost hydrocarbons under mild conditions (< 100 ℃ and atmospheric pressure) is explored with the assistance of non-thermal plasma. This novel technology can effectively convert methane at near ambient temperature and atmospheric pressure. A methane conversion higher than 40% can be achieved over the SBA-15 catalyst. Unlike the conventional thermos-catalytic process, activated methane can directly convert into the liquid product without the participation of any other co-reactants, with the liquid product primarily composed of gasoline range iso-paraffins. Over the optimized catalyst, the production of undesired coke and by-products are well-controlled. The effect of dielectric constant, porous structure, and acidity of the packed catalyst on catalytic performance is also studied. Additionally, as a promising H-donor, activated methane can participate in a series of hydrotreating reactions, such as catalytic reforming of naphtha and hydrodesulfurization of crude oil. Upon plasma activation, the co-fed methane can effectively accelerate hydrogenation and isomerization reactions for iso-paraffin production over an optimized Ga-based ZSM-5 catalyst. A systematic model compound study is conducted to gain a better understanding of the reaction mechanism. This novel process also successfully achieves the partial desulfurization of fed coker naphtha by close to 60%, which triggered another model compound study of non-thermal plasma assisted catalytic desulfurization study and thiophene is selected as the model compound. Sn-Ga/SBA-15 exhibits the best performance regarding thiophene conversion and H2S emission, even in a 12-hour prolonged run. It is also proved that the reaction atmosphere can greatly affect the composition of gas and solid products. An in-situ O2-plasma oxidation method is proposed and evaluated for NTP reactor regeneration, which can effectively remove the solid deposits from the quartz tube and spent catalyst. The knowledge obtained from this thesis indicates the feasibility of non-thermal plasma assisted light hydrocarbon catalytic upgrading and the synergistic effect between catalysis and plasma activation, which provides a novel process for the current petrochemical infrastructure.
Catalytic Conversion of Hydrocarbons to Valuable Chemicals and Methanotreating of Oxygenates to Fuel
Creators: name: Jarvis, Jack
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: methanotreating
subject: catalysis
subject: bio-oil
subject: Education--Sciences
subject: Engineering--Chemical
subject: Engineering--Petroleum

description: The world is accelerating towards a gasoline fuel-free future and research focus is shifting towards alternative energy. The efficient use of remaining downstream fossil-fuel derived oil sources and effective treatment of renewable fuel sources has become imperative. Remaining fossil fuel sources like crude oil distillation and Fischer Tropsch products, which contain large amounts of n-paraffins, are no longer desirable as fuels because of their negative environmental impact. As such, they need to be valorized to valuable chemicals instead. This issue is addressed in this thesis by a thorough investigation of numerous hydrocarbons which can be found in such sources, including olefins, paraffins, and naphthenes. Their valorization to aromatics by heterogenous catalysis are investigated to provide a solution and use for remaining hydrocarbons derived from fossil fuels. Additionally, this thesis focuses on the treatment of bio-oils, a suitable fuel source replacement for fossil fuel-based fuels. Bio-oils can come from various sources, but they all have the same issue; they are high in oxygen content. This means energy density is low, acidity is high, and that the oil is thermochemically unstable. Hydrotreating is currently used to deoxygenate these feedstocks as it contributes to decarbonylation, decarboxylation, and saturation reactions. However, hydrogen is expensive, unavailable naturally, and environmentally unfriendly to synthesize as it is obtained predominantly from steam methane reforming. Direct use of methane for the deoxygenation of bio-oils (methanotreating) is investigated in this research. With carefully tailored catalysts, methane can be activated at low temperatures and pressures to provide hydrogen directly and contribute its carbon moiety to oxygen containing components in the product, highlighting the potential for methanotreating in the future of renewable fuels.
Nuclear Star Clusters and the Stellar Spheroids of their Host Galaxies
Creators: name: Leigh, Nathan
name: Böker, Torsten
name: Knigge, Christian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (Abridged) We combine published photometry for the nuclear star clusters (NSCs) and stellar spheroids of 51 low-mass, early-type galaxies in the Virgo cluster with empirical mass-to-light ratios, in order to complement previous studies that explore the dependence of NSC masses (M_{NSC}) on various properties of their host galaxies. We confirm a roughly linear relationship between M_{NSC} and luminous host spheroid mass (M_{Sph}), albeit with considerable scatter (0.57 dex). We estimate velocity dispersions from the virial theorem, assuming all galaxies in our sample share a common DM fraction and are dynamically relaxed. We then find that M_{NSC} \sim σ^{2.73\pm 0.29}, with a slightly reduced scatter of 0.54 dex. This confirms recent results that the shape of the M_{CMO} - σrelation is different for NSCs and super-massive black holes (SMBHs). We discuss this result in the context of the generalized idea of "central massive objects" (CMOs). In order to assess which physical parameters drive the observed NSC masses, we also carry out a joint multi-variate power-law fit to the data. In this, we allow M_{NSC} to depend on M_{Sph} and R_{Sph} (and hence implicitly on σ), as well as on the size of the globular cluster reservoir. When considered together, the dependences on M_{Sph} and R_{Sph} are roughly consistent with the virial theorem, and hence M_{NSC} \propto σ^2. However, the only statistically significant correlation is a linear scaling between M_{NSC} and M_{Sph}. We compare M_{NSC} with predictions for two popular models for NSC formation, namely i) globular cluster infall due to dynamical friction, and ii) in-situ formation during the early phases of galaxy formation that is regulated via momentum feedback from stellar winds and/or supernovae. Neither model can directly predict the observations, and we discuss possible interpretations of our findings.
description: 10 pages, 2 tables, 6 figures; accepted for publication in MNRAS; edited to match published version
Effect of varying supply of amino acids on nitrogen retention and growth performance of boars of different sire lines
Creators: name: Otten, Caroline
name: Berk, Andreas
name: Hagemann, Luise
name: Müller, Simone
name: Weber, Manfred
name: Dänicke, Sven
Publisher: name: Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
Year: 2013
Subjects: subject: 570 Life sciences

description: Archiv Tierzucht 56 (2013) 75, 751-765; ISSN 0003-9438
Chk1 inhibition-induced BRCAness synergizes with olaparib in p53-deficient cancer cells
Creators: name: Zhao, Yang
name: Zhou, Kehui
name: Xia, Xiangyu
name: Guo, Yajie
name: Tao, Li
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: Virology

description: Although targeting DNA-damage repair by inhibition of PARP exhibits weak or modest single-agent activity due to the existence of functional BRCA1/2 alleles, PARP inhibitors have been gradually applicable in BRCA-proficient cancers. Checkpoint kinase 1 (Chk1) inhibition selectively disrupts homologous recombination (HR)-mediated DNA repair and confers synthetic lethality in p53-deficient tumors, we therefore aim at expounding the chemopotentiating effects of Chk1 inhibition on PARPi in BRCA-proficient and p53-deficient cancer cells. Initially, BRCA wild-type, p53-null cells including AsPC-1 and H1299 demonstrated innate resistance to PARP inhibitor olaparib compared to BRCA1-mutant, p53-null MDA-MB-436 cells. We quantified the interaction between olaparib and a selective Chk1 inhibitor MK-8776, which produced synergistic effects under sub-IC50 concentrations in p53-depleted AsPC-1 and H1299 cells. Olaparib in combination with MK-8776 showed enhanced antitumor effects through prohibiting proliferation and secondarily inducing apoptosis in two cell lines. Of note, we observed that MK-8776 significantly sensitized cells to olaparib by broad DNA and chromosomal breaks. Mechanistically, MK-8776 abrogated olaparib-induced BRCA1 intranuclear foci formation, MCM7-mediated replication machineries, and ultimately triggered an accumulation of γH2AX, a well-recognized marker of DNA double-strand breaks. Additionally, we established ectopic expression of hotspot mutant p53 in H1299 cells. Introduction of p53R175 H promoted olaparib resistance as single-agent treatment, but the synergy between olaparib and MK-8776 was still achievable and the region of synergy was produced by lower combination concentrations. These data provide insight into how Chk1 inhibition could be effectively targeted and confer sensitivity to olaparib toward p53-deficient and HR-proficient cancers.
Stories of Empowered Alberta Teachers: Enacting Responsibilities in Indigenous Education
Creators: name: Meade, Sarah M.
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: Indigenous education
subject: decolonizing education
subject: Photovoice
subject: sharing circles
subject: teacher education
subject: Truth and Reconciliation
subject: Education

description: Teachers in Alberta are tasked with adhering to the Truth & Reconciliation Commission’s Calls to Action (2015b) and the Teaching Quality Standard (Alberta Education, 2018) related to Indigenous education, despite having little formal Indigenous education in their formal schooling. In this action-based qualitative study, I employed a decolonizing methodology, grounded in the principles of participatory action research and oriented by critical pedagogy to explore how teachers are enacting their responsibilities as champions of Indigenous education. Using Photovoice and sharing circles as methods, the findings that surfaced in the data revealed that, in enacting their responsibilities in Indigenous education, Alberta teachers in this study are: encountering resistance and racism, embracing a pedagogy of discomfort (Boler & Zembylas, 2003), engaging in critical reflection and navigating oppressive structures in the education system. The methodology employed in this study can be replicated in future studies and could be used to develop professional learning for teachers in Indigenous education.
Se il museo si fa teatro: la cultura del display tra conservazione e produzione
Creators: name: Emilia Perassi, (A Cura Di)
name: Paolo Caponi, (A Cura Di)
Publisher: name: Università degli  Studi di Milano
Year: 2011

description: Se il museo si fa teatro: la cultura del display tra conservazione e produzione/Cuando el museo se hace teatro: la cultura del display entre conservación y producción/Quand le musée devient un théâtre : la culture du display entre conservation et production/When museum turns into theatre: the culture of display between conservatism and production
description: Altre Modernità, No 5 (2011): Se il museo si fa teatro: la cultura del display tra conservazione e produzione
Characteristics of dopaminergic projections from the ventral tegmental area and the dorsal raphe nucleus to the orbital frontal cortex
Creators: name: Noble, Duncan
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: Dopamine
subject: Neuroscience

description: The dorsal raphe nucleus (DRN) is a region in the brain stem that consists of serotonin, dopamine, glutamate, and GABA neurons. The serotonergic projections are well studied; however, the dopamine efferent projections and their effects are not as well understood. The orbital frontal cortex (OFC) is a region known for evaluating stimuli and updating actions depending on previous experience. The OFC receives strong input from DRN serotonergic neurons. However, it is unknown if dopamine neurons of the DRN project to the OFC and how they modulate neuronal activity. While the OFC receives input from ventral tegmental area (VTA) dopaminergic neurons, it is unknown how the strength of this dopaminergic input compares with that from the DRN. I hypothesize that, similar to VTA projections, dopamine neurons from the DRN project to the OFC and that they can directly modulate their effect targets. Retrograde and anterograde tracing determined that dopaminergic neurons of the VTA and DRN project to the OFC with similar strength and density of neurons, with greater fibre density in the medial than the lateral OFC. Optogenetically evoked dopamine measured with fast scan cyclic voltammetry in the medial or lateral OFC discovered that the dopamine concentration for each projection was similar regardless of the density of each projection. Integrating optogenetics and electrophysiology determined that the concentration of dopamine (50nM) does not influence the firing of pyramidal neurons in the medial OFC. Overall, we characterize two dopaminergic projections to the medial and lateral OFC.
Sasaki-Einstein and paraSasaki-Einstein metrics from (κ,μ)-structures
Creators: name: Montano, Beniamino Cappelletti
name: Carriazo, Alfonso
name: Martín-Molina, Verónica
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C12, 53C15, 53C25, 53B30, 57R30

description: We prove that any non-Sasakian contact metric (κ,μ)-space admits a canonical η-Einstein Sasakian or η-Einstein paraSasakian metric. An explicit expression for the curvature tensor fields of those metrics is given and we find the values of κand μfor which such metrics are Sasaki-Einstein and paraSasaki-Einstein. Conversely, we prove that, under some natural assumptions, a K-contact or K-paracontact manifold foliated by two mutually orthogonal, totally geodesic Legendre foliations admits a contact metric (κ,μ)-structure. Furthermore, we apply the above results to the geometry of tangent sphere bundles and we discuss some topological and geometrical properties of (κ,μ)-spaces related to the existence of Eistein-Weyl and Lorentzian Sasakian Einstein structures.
Silvia Giletti Benso e Laura Silvestri (a cura di), Ciudad Juárez. La violenza sulle donne in America Latina, l’impunità, la resistenza delle Madri
Creators: name: Fiorani, Flavio
Publisher: name: Università degli  Studi di Milano
Year: 2011

description: Silvia Giletti Benso e Laura Silvestri (a cura di), Ciudad Juárez. La violenza sulle donne in America Latina, l’impunità, la resistenza delle Madri (Milano, Franco Angeli, 2010, 192 pp.)
di Flavio Fiorani
description: Altre Modernità, No 5 (2011): Se il museo si fa teatro: la cultura del display tra conservazione e produzione
Assessing Seedling and Sapling Height and Growth Using Field and UAV Remote Sensing Data for Boreal Restoration
Creators: name: Shellian, Colette A
Publisher: name: Arts
Year: 2022
Subjects: subject: Remote sensing
subject: Seismic lines
subject: boreal forest
subject: forest restoration
subject: silviculture treatments
subject: surivival
subject: growth
subject: black spruce
subject: tamarack
subject: seedling
subject: sapling
subject: photogrammetry
subject: UAV
subject: tree height
subject: phenology
subject: occlusion
subject: Remote Sensing
subject: Biology--Ecology

description: Seismic lines are narrow linear disturbances that are used for hydrocarbon resource exploration throughout Alberta’s boreal forest. Seismic lines are long-lasting ecological disturbances, with many lines exhibiting little or no forest regeneration many decades after the initial disturbance. In the past decade, governments and industry have taken action to restore forested areas that are fragmented by seismic lines. Current restoration activities involve applying silvicultural treatments, such as soil preparations and tree-planting on lines that are not recovering naturally. Additionally, monitoring surveys that consist of measuring the height, species, and distribution of tree seedlings and saplings are used to assess the status of seismic lines recovery. However, there is limited understanding of the survival and growth responses of seedlings and saplings on seismic lines after silvicultural treatments are administered. In addition, the current approaches to surveying seedlings and saplings on seismic lines involves extensive field work that is challenging to scale. Relative to field-based vegetation surveys, UAV-based surveys that implement photogrammetric techniques show potential to measure the height of regenerating trees more economically. But the specific environmental conditions that are conducive to successful remote vegetation surveys on seismic lines has never been assessed. The first research chapter of this thesis examines the effects of silviculture treatments on seedling and sapling survival and growth is boreal treed fens. I found that planted seedlings had 69-70% higher growth rates than natural seedlings, but treatments had no effect on survival. The second research chapter utilizes the individual tree-crown approach to determine how leaf-phenology, understory vegetation, seedling species, and height influences the accuracy of height predictions using image-based point clouds. I found that leaf-on phenology yielded more accurate height estimates for spruce, tamarack, and broad-leaf species over 30 cm tall, but shorter seedlings were not measured reliably regardless of phenology and species. There was overall good agreement between field-based and UAV-based stocking assessments in the leaf-on period (F = 0.86).
Disputa teologica in un mondo alla rovescia: il dramma su Abramo di Moshè Zacuto
Creators: name: Rathaus, Ariel
Publisher: name: Università degli  Studi di Milano
Year: 2011
Subjects: Zacuto; Abramo; teatro ebraico; carnevalizzazione

description: Theological controversy in a reversed world;  Moshe Zacuto's drama on Abraham.
The foundation of the world (Yessod 'Olam) is believed to be the first Biblical drama written in Hebrew.  It was composed in the first half of the 17th century by the mystical and rabbinical author Moshe Zacuto, who immigrated to Italy from Amsterdam.  In fact the work is mostly based on rabbinic legends about Abraham and his struggle against idolatry, and includes many theological debates between the patriarch and King Nimrod, the pagan tyrant who condemns him to be burnt for his ideas. This paper deals with the ideological background of the drama and the peculiar and paradoxical atmosphere created by the theological debates.  As asserted by several scholars (Berliner, Schirmann. Levy), Zacuto, who was born in a refugees family of  Marrano origin,  alluded in his play to the persecutions of the Jews by the Inquisition in Spain and Portugal. On the other hand, it seems that the play also alludes to 17th Century materialistic philosophy and hedonism, symbolized by the words of Nimrod and his sages.  At any rate, the struggle between Abraham and Nimrod takes place in a highly absurd ideological frame, in which right and wrong are meaningless concepts and true faith is considered as a sort of moral perversion: a reversed world. The paper underlines this hidden and ironic aspect of the play and discusses it, on the basis of some classic works on Carnival reversion, like Cocchiara's Il mondo alla rovescia  and Bakhtin' s Rabelais and his world.
description: Altre Modernità, 2011: NUMERO SPECIALE La Bibbia in Scena
"Who wants tradition in the Beatle generation?" : Ravi Shankar, the Indian press, and the cultural politics of reception, 1966-68
Creators: name: Stockill, Zachary Francis
Publisher: name: University of British Columbia
Year: 2013

description: During the 1960s, the new exposure of Hindustani classical music in Europe and America, and the increasing popularity of Ravi Shankar's music within the Western counter-culture was primarily inspired by the Indian sitarist's friendship with Beatles guitarist George Harrison. Aside from resulting in a much larger audience for Hindustani classical music in the West, this interaction also provoked criticism and scrutiny in Shankar's native India. In early 1968, the English-language newspaper coverage in India spanning the Beatles visit, and Ravi Shankar's return to his home country offered a valuable portrait of India in a moment of spiritual and cultural flux. Upon his return to Indian in 1968 following an extended stay in Europe and America, Ravi Shankar found himself at the centre of a debate concerning the rightful place of "tradition" in Hindustani classical music, and Indian culture more generally, with cultural critics engaged in a debate around the influence of the West in a rapidly modernizing nation. The self-appointed guardians of "tradition" associated with Hindustani classical music expressed a desire to keep the art form "pure" in the context of the Beatles and the Western counter-culture's new appreciation for, and consumption of the music as promoted by Ravi Shankar. At the same time, Indian intellectuals critical of the traditionalist viewpoint celebrated the Western counter-culture's embrace of Ravi Shankar as an artistically productive outcome of the globalization of Indian culture. This controversy demonstrates that in a nation in which colonialism was a fresh memory, some felt it essential to protect what was imagined as a purely indigenous tradition against the threat of new Western influence. Indians engaged in this debate were forced to negotiate new trends in global information flows with the ripple effects of the 1960s socio-cultural revolution in the West, along with ancient customs and venerated traditions that supported the narratives upon which the nation was founded.
Purim e gli albori del teatro ebraico in Italia
Creators: name: Mayer Modena, Maria Luisa
Publisher: name: Università degli  Studi di Milano
Year: 2011
Subjects: Purim; Commedia del matrimonio; Gnora Luna; Esther; Haman

description: The Jewish theatre in Hebrew has its very first beginning in Italy with the "Wedding Comedy" by Leone de Sommi (Mantua, floruit 1550), whose inspiration owes much to the Purim tradition. Jewish theatre, especially the Judaeo-Italian one, continues to flourish until XX century,  always maintaining a strong connection with the Purim celebration. This article will deal with the development of the Jewish theatre - both in Hebrew and in Jewish language -, with  particular emphasis on its relationship with the Purim. In examining the main phases of such  a relevant phenomenon we will rely on the documents currently known, with particular reference  to the Judaeo Italian corpus; one of the first objectives of this work will be to open new perspectives for further research in the field of Jewish dramatic literature.
description: Altre Modernità, 2011: NUMERO SPECIALE La Bibbia in Scena
The Middle Palaeolithic of present day Romania : a critical review
Creators: name: Pop, Cornel Marian
Publisher: name: University of British Columbia
Year: 2013

description: This thesis presents a critical review of research on the Middle Palaeolithic record of present day Romania. Through an analysis of the historical development of the discipline as well as qualitative and quantitative assessments of the published data, I argue that despite a history of research that spans over a century, the Romanian Middle Palaeolithic record is poorly understood, even from a culture historical perspective. Although over 240 locations with potential Middle Palaeolithic finds have been identified to date, of which 120 have yielded artifacts confidently classified as Middle Palaeolithic, only approximately 21 of these have been systematically excavated and adequately published. These sites constitute a sample shown to evidence statistically significant patterns that are most likely a reflection of research bias rather than underlying archaeological phenomena. Nevertheless, through a careful exploratory analysis of the data promising directions for future research are identified, as well as a series of patterns which reveal that Neanderthal populations likely had limited adaptive capacities that rendered them unable to cope with the harshest climatic regimes. Based on currently available figures, Romania appears to have been sparsely populated by Neanderthals throughout, its Middle Palaeolithic record yielding less than approximately 100,000 lithic artifacts (including debris), the majority of which were recovered from but two levels at a single site: Ripiceni-Izvor.
Il Purim-shpil: origini e trasformazioni
Creators: name: Rosenzweig, Claudia
Publisher: name: Università degli  Studi di Milano
Year: 2011
Subjects: Yiddish; parodia; Ebrei ashkenaziti; Purim-shpil

description: The Purim-shpil: Origins and Transformations
In this paper I consider the origins of the most venerable form of Yiddish theatre, the Purim-shpil. In particular, I note the first attestations of the term Purim-shpil, from its initial appearance in Yiddish texts from  16th-century Italy, to subsequent examples: 1. a Purim-shpil from Germany, from the years 1595-1605 and 2. Eyn sheyn Purim-shpil from Wagenseil’s collection (1697), both published by Chone Shmeruk in 1979. I endeavour to interpret these texts – which cannot yet be defined as fully theatral – within the rich parodic tradition of Purim in Ashkenazi society, and propose that this tradition should be seen not in terms of ‘popular’, but rather as the fruit of a skilled use of different registers, ‘high’ and ‘low’, in a way that parallels the parodies of sacred Christian texts in European Medieval literature. Indeed we know that the actors were often students of the Talmudic Academies, and thus among the most cultured intellectuals of Ashkenazi society. The use not only of quotations and references from the Hebrew Bible, but from Midrash and prayers in the Holy Tongue as well, prove that these texts are a refined product of a rooted patrimony that continues to bear its fruit to this very day.
description: Altre Modernità, 2011: NUMERO SPECIALE La Bibbia in Scena
“Puisque Esther, elle aussi comédienne, sut jouer la comédie au roi”: la storia di Ester nel teatro giudeo-provenzale
Creators: name: Baricci, Erica
Publisher: name: Università degli  Studi di Milano
Year: 2011
Subjects: Ester; Crescas du Caylar; Mardoché Astruc; Jacob Lunel; Armand Lunel

description: The Judaeo-Provençal tradition of Purim celebrations is to be considered particularly interesting:  in fact, most Judaeo-Provençal texts - which constitute a comparatively small corpus - are  interpretations of the story of Esther, dating from XIV to XX century. In this article we will deal  with some dramatic aspects in the representations of the story of Esther: the Roman d'Esther (1327)  by Crescas du Caylar; the Tragediou de la Reine Esther by Mardoché Astruc and Jacob Lunel (1774); the  Esther de Carpentras (1928) by Armand Lunel. We will also discuss the incidence of both traditional  sources (with particular emphasis on the Midrashim) and contemporary culture in the theatrical inspiration of the three dramas.
description: Altre Modernità, 2011: NUMERO SPECIALE La Bibbia in Scena
A New Monte Carlo Method for Time-Dependent Neutrino Radiation Transport
Creators: name: Abdikamalov, Ernazar
name: Burrows, Adam
name: Ott, Christian D.
name: Löffler, Frank
name: O'Connor, Evan
name: Dolence, Joshua C.
name: Schnetter, Erik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Monte Carlo approaches to radiation transport have several attractive properties such as simplicity of implementation, high accuracy, and good parallel scaling. Moreover, Monte Carlo methods can handle complicated geometries and are relatively easy to extend to multiple spatial dimensions, which makes them potentially interesting in modeling complex multi-dimensional astrophysical phenomena such as core-collapse supernovae. The aim of this paper is to explore Monte Carlo methods for modeling neutrino transport in core-collapse supernovae. We generalize the Implicit Monte Carlo photon transport scheme of Fleck & Cummings and gray discrete-diffusion scheme of Densmore et al. to energy-, time-, and velocity-dependent neutrino transport. Using our 1D spherically-symmetric implementation, we show that, similar to the photon transport case, the implicit scheme enables significantly larger timesteps compared with explicit time discretization, without sacrificing accuracy, while the discrete-diffusion method leads to significant speed-ups at high optical depth. Our results suggest that a combination of spectral, velocity-dependent, Implicit Monte Carlo and discrete-diffusion Monte Carlo methods represents a robust approach for use in neutrino transport calculations in core-collapse supernovae. Our velocity-dependent scheme can easily be adapted to photon transport.
description: 29 pages, 13 figures, Accepted for publication in ApJ
Total Organic Halogen: Method Development and Quantification in an Electrochemical Advanced Oxidation System for Water Disinfection
Creators: name: Verwold, Chad M
Publisher: name: Science
Year: 2021
Subjects: subject: Water disinfection
subject: Analytical Chemistry
subject: FOS: Chemical sciences
subject: Disinfection By-Products
subject: Electrochemistry
subject: Chromatography
subject: Physical Sciences
subject: Chemistry--Analytical
subject: Environmental Sciences

description: The work of this thesis comprehensively quantifies halogenated disinfection by-products (DBPs) and halogenated emerging contaminants in drinking water and wastewater. DBPs are formed during water disinfection when natural organic matter reacts with the disinfectant. DBPs have been shown to display genotoxic, cytotoxic, and potentially carcinogenic properties to humans. Recently, electrochemical treatment has become of interest given its ability to provide simultaneous disinfection and oxidation of chemical compounds. Chapter 2 includes an analytical method that quantifies total organic halogen (TOX) in water. The TOX method provides a comprehensive and non-target evaluation of waters containing DBPs and halogenated emerging contaminants and is quantified as total organic fluorine (TOF), chlorine (TOCl bromine (TOBr), and iodine (TOI). Twelve emerging contaminants were spiked into ultrapure water and wastewater with recoveries between 19-107. The method was applied to four wastewaters prior to disinfection across 2 cities in Alberta, Canada. TOF ranged from 4.9 - 10.5 µg/L, TOCl ranged from 67.5 - 80.0 µg/L, TOBr ranged from 5.0 – 9.0 µg/L, and TOI was only detected in two samples at 1.8 and 6.1 µg/L. An emerging contaminants target analysis for 196 compounds was able to identify 1.5% of TOX in a wastewater sample.In Chapter 3, the formation of DBPs produced by BioLargo Water’s AOS was assessed. The reactor was evaluated by treating pure water, river water, and secondary wastewater effluent with the AOS. Target DBP analysis was used that included 25 unregulated DBP. Ultrapure water disinfection only quantified triiodomethane at a maximum concentration of 0.90 ± 0.05 µg/L. River water results show that TOI increase from 1.26 ± 0.26 µg/L before disinfection (t=0) to a maximum of 3.50 ±1.11 µg/L. Secondary wastewater effluent disinfection results show that TOI increased from 1.75 ± 0.25 µg/L (t=0) to a maximum concentration of 35.29 ± 0.31 µg/L. Iodide and iodate were the main iodinated species exiting the AOS with an iodine recovery of 94-101%. The results from this study show that the AOS formed low levels of iodinated DBPs in treated water sources that are comparable to the levels found in disinfected drinking water and wastewater.
Sulle orme di Racine e Metastasio: Il castigo di Atalia di David Franco-Mendes
Creators: name: Callow, Anna Linda
Publisher: name: Università degli  Studi di Milano
Year: 2011
Subjects: David Franco-Mendes; teatro ebraico; Haskalah; Atalia

description: Atalia's Punishment by David Franco-Mendes is a biblical drama which belongs to the period of the  Hebrew Haskalah. The author declares openly that he was inspired by the works of Racine and Metastasio,  but although it is possible to identify many common features, there are also important differences.
The character of Atalia is deprived of a tragic stature which could inspire sympathy in the reader,  while all the elements of the text regarding the Temple of Jerusalem and the coronation of the legitimate  heir to the lineage of David are amplified. In this way, the drama, as compared to the works of Racine  and Metastasio, is brought back to be closer to the sensibility of a Jewish audience. Its being written  according to the canons of modern literature, and in pure Biblical Hebrew, however, makes it ideally  accessible to an educated audience of non-Jewish origin. The work can then be interpreted as an attempt  to mediate between the Jewish and non-Jewish European culture, in the spirit of the Haskalah.
description: Altre Modernità, 2011: NUMERO SPECIALE La Bibbia in Scena