cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutron scattering study of novel magnetic order in Na0.5CoO2
Creators: name: Gasparovic, G.
name: Ott, R. A.
name: Cho, J. -H.
name: Chou, F. C.
name: Chu, Y.
name: Lynn, J. W.
name: Lee, Y. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report polarized and unpolarized neutron scattering measurements of the magnetic order in single crystals of Na0.5CoO2. Our data indicate that below T_N=88 K the spins form a novel antiferromagnetic pattern within the CoO2 planes, consisting of alternating rows of ordered and non-ordered Co ions. The domains of magnetic order are closely coupled to the domains of Na ion order, consistent with such a two-fold symmetric spin arrangement. Magnetoresistance and anisotropic susceptibility measurements further support this model for the electronic ground state.
description: 4 pages, 4 figures
Come muoiono Orlando e Olivieri? Su alcuni luoghi della «Chanson de Roland»
Creators: name: D'Agostino, Alfonso
Publisher: name: Università degli Studi di Milano
Year: 2015
Subjects: Chanson de Roland; Song of Roland; ecdotica; textual philology; interpretazione; interpretation

description: Contro l’interpretazione tradizionale (Bédier, Roques), viziata dall’esegesi della parola adenz, che è una lezione molto problematica (per il fatto d’essere in realtà uno dei documentabili tic del copista del Roland di Oxford) da correggere ricorrendo alla tradizione beta della chanson, il saggio indica che le morti di Orlando, Olivieri e Turpino sono raccontate secondo una sapiente variazione narrativa che fa del primo un capitano glorioso e un vassallo fedele, del secondo un soldato profondamente religioso e del terzo, specularmente, un religioso combattente. Da un caso di microfilologia (una lezione facilior ripetuta piú d’una volta) si arriva cosí a una migliore comprensione letteraria di tre episodi del poema.

Going against the traditional interpretation (Bédier, Roques), spoiled by the exegesis of the word adenz, which is a very problematic lectio (because it is in fact one of the documented tics by the Roland copist from Oxford), and to be corrected using the beta tradition of the chanson, the essay points out that the deaths of Roland, Oliver and Turpin are told using a skillful narrative variation that pictures the first one as a glorious captain and a loyal vassal, the second one as a profoundly religious soldier, and the third, in a specular fashion, as a religious fighter. From a case of microphilology (a lectio facilior repeated more than once) a better literary comprehension of three episodes of the poem is achieved.
description: Carte romanze, Vol 3, No 2 (2015)
Cation concentration profiles in float glass surfaces during corrosion in aqueous solutions
Creators: name: Matoušek, Josef
name: Maryška, Martin
name: Helebrant, Aleš
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1996
Subjects: subject: 660

description: The chemical composition of the thin surface layer of float glass is not homogeneous with respect to the concentration of some cations. This inhomogeneous cation distribution significantly changes if the glass surface comes into contact with aqueous Solutions. Using ESCA significant changes in the distribution of magnesium and sodium cations were found on the " top " surface of float glass in static corrosion environment. The magnesium concentration increases in the th in surface layer, while sodium concentration decreases almost to zero. The relative amounts of calcium, Silicon and oxygen appear to be nearly the same both in the original and the corroded surface layer. The change of magnesium and sodium concentrations as well as an electron micrograph of the glass surface indicate damage and hydration of the " top " surface layer of float glass. The distribution of the Clements does not show any significant change if corrosion proceeds in Streaming water. Consequently, total dissolution of the basic glass network built by Silicon and oxygen atoms appears to be the fundamental process in this case.
Accelerating Irregular Computations with Hardware Transactional Memory and Active Messages
Creators: name: Besta, Maciej
name: Hoefler, Torsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We propose Atomic Active Messages (AAM), a mechanism that accelerates irregular graph computations on both shared- and distributed-memory machines. The key idea behind AAM is that hardware transactional memory (HTM) can be used for simple and efficient processing of irregular structures in highly parallel environments. We illustrate techniques such as coarsening and coalescing that enable hardware transactions to considerably accelerate graph processing.We conduct a detailed performance analysis of AAM on Intel Haswell and IBM Blue Gene/Q and we illustrate various performance tradeoffs between different HTM parameters that impact the efficiency of graph processing. AAM can be used to implement abstractions offered by existing programming models and to improve the performance of irregular graph processing codes such as Graph500 or Galois.
description: Best Paper Award at ACM HPDC'15 (1/116)
An interdisciplinary study of the mechanical and dynamic properties of α-solenoid repeat proteins
Creators: name: Synakewicz, Marie
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Biophysics
single molecule force spectroscopy
optical tweezers
repeat proteins
protein engineering
TPRs
HEAT
PP2A
protein folding
protein mechanics

description: Tandem-repeat proteins differ from globular proteins, both in their biophysical characteristics and in how they interact with their respective partners, yet they comprise nearly one third of the human proteome and are central to many cellular processes and disease phenotypes. Repeat proteins have been shown to behave like nano-sized biological springs: they are flexible, dynamic and elastic. Using coarse-grained models, I discuss how intrinsic flexibility may arise in repeat proteins and how it could be crucial for the biological function of two systems: PR65, the scaffold protein of the protein phosphatase 2A, and Rap proteins, which are involved in quorum sensing. To interrogate α-solenoids at physiologically relevant forces, I performed force spectroscopy experiments using a dumbbell optical tweezers set up for which it is necessary to attach the relevant protein to DNA. As PR65 is not amenable to current DNA-protein attachment methods, I developed a protocol that allows the cross-linking of DNA oligos to proteins using bio-orthogonal chemistry. I then explored the mechanics of the natural repeat protein, PR65, and a series of designed TPR proteins. I find that these proteins respond to forces in a novel manner which is significantly different to what has been previously reported. TPRs unfold and refold in quasi-equilibrium at constant force without energy loss. In contrast, PR65 unfolds in separate domains and refolds along an entirely different pathway. In conclusion, my doctoral studies explore the physical characteristics of repeat proteins in more detail. Using both experimental and computational techniques, I provide unique perspectives on different aspects of their mechanical and dynamic capabilities. This work provides the basis for future investigations of how such interesting mechanical behaviour relates to biological function. Are repeat proteins simply a molecular recognition platforms for their multitude of binding partners, or do their mechanics matter in a biological context?
High Energy Dispersions in Bi2Sr2CaCu2O8 High Temperature Superconductor from Laser-Based Angle-Resolved Photoemission
Creators: name: Zhang, Wentao
name: Liu, Guodong
name: Meng, Jianqiao
name: Zhao, Lin
name: Liu, Haiyun
name: Dong, Xiaoli
name: Lu, Wei
name: Wen, J. S.
name: Xu, Z. J.
name: Gu, G. D.
name: Sasagawa, T.
name: Wang, Guiling
name: Zhu, Yong
name: Zhang, Hongbo
name: Zhou, Yong
name: Wang, Xiaoyang
name: Zhao, Zhongxian
name: Chen, Chuangtian
name: Xu, Zuyan
name: Zhou, X. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Super-high resolution laser-based angle-resolved photoemission (ARPES) measurements have been carried out on the high energy electron dynamics in Bi2Sr2CaCu2O8 (Bi2212) high temperature superconductor. Momentum dependent measurements provide new insights on the nature of high energy kink at 200~400 meV and high energy dispersions. The strong dichotomy between the MDC- and EDC-derived bands is revealed which raises critical issues about its origin and which one represents intrinsic band structure. The MDC-derived high energy features are affected by the high-intensity valence band at higher binding energy and may not be intrinsic.
description: 4 pages, 4 figures
ASI Space Science Data Center participation to high-school outreach program
Creators: name: Zinzi, Angelo
name: Pittori, Carlotta
name: Tagliamonte, Rosa
name: Nichelli, Elisa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Since 2017 the Italian Space Agency (ASI) participates to so-called "Alternanza Scuola-Lavoro" (i.e., "school-work synergy") outreach projects promoted by the Italian government, and the ASI Space Science Data Center (SSDC) actively contributes to them, with the primary aim of bringing students closer to space-related activities before choosing their university studies. The SSDC outreach program is split into two parts: one theoretical, in which relevant topic are presented and explained, and one practical, consisting of hands-on activities aimed to replicate scientific analysis of real space data. The impact of the program on students' attitude is then evaluated by means of questionnaires specifically designed to gather information on the students' educational background, the level of engagement triggered by the proposed activities, their relevance to school-based activities, and the perceived ease of understanding of the covered topics. As reported in this paper, the analysis of the answers clearly shows that students greatly appreciated this outreach project, supporting its possible expansion and development, even articulated in a more complex pedagogical plan, as already done for one school in a pilot case. Therefore, we plan to expand these activities in the next future both by including new topics (e.g., cosmology, stellar physics), and by proposing new more articulated teaching pathways inclusive of on-site activities in the classroom.
Precautions for Survival
Creators: name: Ochurte, Rufino
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: "When I have Donned My Crest of Stars" (University of Utah Press, 1983), p. 152 for transcription, segmentation, glossing, and translation of this story.
Gravitational Bremsstrahlung from Reverse Unitarity
Creators: name: Herrmann, Enrico
name: Parra-Martinez, Julio
name: Ruf, Michael S.
name: Zeng, Mao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the total radiated momentum carried by gravitational waves during the scattering of two spinless black holes at the lowest order in Newton's constant, $\mathcal O(G^3)$, and all orders in velocity. By analytic continuation into the bound state regime, we obtain the ${\cal O}(G^3)$ energy loss in elliptic orbits. This provides an essential step towards the complete understanding of the third-post-Minkowskian binary dynamics. We employ the formalism of Kosower, Maybee, and O'Connell (KMOC) which relates classical observables to quantum scattering amplitudes and derive the relevant integrands using generalized unitarity. The subsequent phase-space integrations are performed via the reverse unitarity method familiar from collider physics, using differential equations to obtain the exact velocity dependence from near-static boundary conditions.
description: 5 pages + references, 3 figures. v2: published version
Electrical modelling and scale-up rules for glass melters
Creators: name: Spremulli, Paul F.
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1996
Subjects: subject: 660

description: Α scale-up rule is developed to estimate the resistance for each circuit of a projected glass melter. Given all the internal sizes and contours including shapes of the electrodes as well as the power and power ratios and the resistivity of the molten glass for the proposed melter, this rule permits calculating the voltage and current for each of its circuits. Single-phase circuit-interactions, distributions of equipotential surfaces and lines of current and some safety considerations are discussed and illustrated for a multiplicity of electrodes and single-phase power supplies by using two-dimensional, isothermal, salt water models of electric melters. Phase relations that occur between currents in non-linear fluid conductors when additional transformers are used as currentbalancing means are also explored. This material is useful for understanding and designing electric melters.
Prediction of the productivity of floodplain soils in Taraba state using productivity models
Creators: name: Bako, Tanko
name: Bardey Istifanus, Akila
name: Ambo Mamai, Ezekiel
Publisher: name: EQA - International Journal of Environmental Quality
Year: 2021

description: A study was carried out to quantify the productivity level of floodplain soils in Taraba state using Neill’s Productivity Index (PI) and Modified Neill’s Productivity Index (PIM). Fields and laboratory experiments were conducted to study the effects of locations on distribution of bulk density, available water capacity, pH, organic matter, available phosphorus, iron oxide and aluminium oxide at different soil depths, and its effects on soil productivity. The bulk density and available water capacity were found to increase with soil depths while the soil pH, organic matter, available phosphorus, iron oxide and aluminium oxide were found to decrease with soil depths at all the locations investigated. The results show that soil productivity index was significantly (P ≤ 0.05) affected by locations of the floodplains.
description: EQA - International Journal of Environmental Quality, Vol. 43 (2021)
$B \to X_s l^+ l^-$ decay in a Top quark two-Higgs-doublet model
Creators: name: Xiao, Zhen-jun
name: Lü, Lin-xia
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate the new physics contributions to the rare semileptonic decay $B \to X_s l^+ l^-$ $(l=e,μ)$ induced by the charged-Higgs loop diagrams appeared in the top quark two-Higgs doublet model (T2HDM). Within the considered parameter space, we found that (a) the effective Wilson coefficients $\widetilde{C}_{i}^{eff}(m_b)$ ($i =7γ, 9V$ and $10A$) in the T2HDM are always standard model like; (b) the new physics contributions to $\widetilde{C}_{7γ}^{eff}$ and $\widetilde{C}_{9V}^{eff}$ can be significant, but they tend to cancel each other; and (c) the T2HDM predictions for $Br(B \to X_s l^+ l^-)$ agree well with the measured value within one standard deviation.
description: 18 pages, 8 eps figures, typos removed, final version appeared in PRD
Biofortification: way forward toward micronutrient deficiency
Creators: name: Mushtaq, Zain
name: Nazir, Anum
Publisher: name: EQA - International Journal of Environmental Quality
Year: 2021

description: Half of the World’s people are being affected by micronutrient-deficiencies. Mostly in developing countries, the human development, along with economic development are hindered by malnutrition. The World Health Organization (WHO) have made fighting micronutrient malnutrition, profoundly known as “Hidden Hunger”, the most important priority. The micronutrient deficiency like zinc, iron and vitamin A are the most demolishing among the World’s poor. The organization have focused on food fortification and supplementation to deal with micronutrient. Biofortification is a novel approach in this regard to provide nutrient enrich food staples. WHO emphasize on biofortiﬁcation through the Harvest Plus-challenge-program to improve micronutrient of the food staple through biotechnological and breeding approaches. Biofortification is cost-effective approach for delivering of micronutrient enrich food crops to poor people, where people cannot afford to use supplementation. Biofortified crops can be a good source of nutrition to the poor people of developing countries. Here, in this review we discussed the biofortification, its discovery leading to development, benefits and prospects towards the development of biofortiﬁed food-crops.
description: EQA - International Journal of Environmental Quality, Vol. 42 (2021)
Measuring the parity of an $N$-qubit state
Creators: name: Zeng, B.
name: Zhou, D. L.
name: You, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scheme for a projective measurement of the parity operator $P_z=\prod_{i=1}^N σ_z^{(i)}$ of $N$-qubits. Our protocol uses a single ancillary qubit, or a probe qubit, and involves manipulations of the total spin of the $N$ qubits without requiring individual addressing. We illustrate our protocol in terms of an experimental implementation with atomic ions in a two-zone linear Paul trap, and further discuss its extensions to several more general cases.
description: 4 pages, 2 figures
Quantitative in-situ determination of iron in a soda-lime-silica glass melt with the aid of square-wave voltammetry
Creators: name: Claußen, Olaf
name: Rüssel, Christian
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1996
Subjects: subject: 660

description: Square-wave voltammetric measurements are fairly convenient to determine thermodynamic data and diffusion coefficients o f polyvalent elements in glass melts. In principle, these methods also allow the quantitative in-situ determination of the total concentrations of polyvalent ions. For the in-situ determination of small quantities, however, improvements of the measuring and analyzing procedures were necessary This was achieved by approximating background currents using polynoms and describing Faradaic currents using theoretically derived equations. Simulations using least Square approximations then allow a much more detailed analysis of the current potential curve. Further improvements were possible by preelectrolyzing the melt at negative potentials and then shifting the potential to zero while recording the square-wave voltammogram. Using both procedures, a quantitative determination of iron concentrations as low a s 0.004 mol% Fe₂O₃ is possible.
Two evolutional paths of an axisymmetric gravitational instability in the dust layer of a protoplanetary disk
Creators: name: Yamoto, Fumiharu
name: Sekiya, Minoru
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Nonlinear numerical simulations are performed to investigate the density evolution in the dust layer of a protoplanetary disk due to the gravitational instability and dust settling toward the midplane. We assume the region where the radial pressure gradient at equilibrium is negligible so that the shear-induced instability is avoided, and also restrict to an axisymmetric perturbation as a first step of nonlinear numerical simulations of the gravitational instability. We find that there are two different evolutional paths of the gravitational instability depending on the nondimensional gas friction time, which is defined as the product of the gas friction time and the Keplerian angular velocity. If the nondimensional gas friction time is equal to 0.01, the gravitational instability grows faster than dust settling. On the other hand, if the nondimensional gas friction time is equal to 0.1, dust aggregates settle sufficiently before the gravitational instability grows. In the latter case, an approximate analytical calculation reveals that dust settling is faster than the growth of the gravitational instability regardless of the dust density at the midplane. Thus, the dust layer becomes extremely thin and may reach a few tenth of the material density of the dust before the gravitational instability grows.
description: 4 pages, 3 figures
Charge Order with Structural Distortion in Organic Conductors: Comparison between θ-(ET)2RbZn(SCN)4 and α-(ET)2I3
Creators: name: Tanaka, Yasuhiro
name: Yonemitsu, Kenji
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Charge ordering with structural distortion in quasi-two-dimensional organic conductors θ-(ET)2RbZn(SCN)4 (ET=BEDT-TTF) and α-(ET)2I3 is investigated theoretically. By using the Hartree-Fock approximation for an extended Hubbard model which includes both on-site and intersite Coulomb interactions together with Peierls-type electron-lattice couplings, we examine the role of lattice degrees of freedom on charge order. It is found that the experimentally observed, horizontal charge order is stabilized by lattice distortion in both compounds. In particular, the lattice effect is crucial to the realization of the charge order in θ-(ET)2RbZn(SCN)4, while the peculiar band structure whose symmetry is lower than that of θ-(ET)2RbZn(SCN)4 in the metallic phase is also an important factor in α-(ET)2I3 together with the lattice distortion. For α-(ET)2I3, we obtain a phase transition from a charge-disproportionated metallic phase to the horizontal charge order with lattice modulations, which is consistent with the latest X-ray experimental result.
description: 10 pages, 13 figures, to appear in J. Phys. Soc. Jpn. Vol. 77 (2008) No.3
On Chern ratios for surfaces with ample cotangent bundle
Creators: name: Conduché, Denis
name: Palmieri, Eleonora
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J29, 14J60, 14M10

description: In this paper we study the problem of density in (1,3] for the Chern ratio of surfaces with ample cotangent bundle. In particular we prove density in (1,2) by constructing a family of complete intersection surfaces in a product of varieties with big cotangent bundle. We also analyse the case of complete intersections in a product of curves of genus at least 2.
description: 10 pages, corrected typos, updated references
Constraints on the Physics of Type Ia Supernovae from the X-Ray Spectrum of the Tycho Supernova Remnant
Creators: name: Badenes, Carles
name: Borkowski, Kazimierz J.
name: Hughes, John P.
name: Hwang, Una
name: Bravo, Eduardo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we use high quality X-ray observations from XMM-Newton and Chandra to gain new insights into the explosion that originated Tycho's supernova 433 years ago. We perform a detailed comparison between the ejecta emission from the spatially integrated X-ray spectrum of the supernova remnant and current models for Type Ia supernova explosions. We use a grid of synthetic X-ray spectra based on hydrodynamic models of the evolution of the supernova remnant and self-consistent nonequilibrium ionization calculations for the state of the shocked plasma. We find that the fundamental properties of the X-ray emission in Tycho are well reproduced by a one-dimensional delayed detonation model with a kinetic energy of 1.2e51 erg. All the other paradigms for Type Ia explosions that we have tested fail to provide a good approximation to the observed ejecta emission, including one-dimensional deflagrations, pulsating delayed detonations and sub-Chandrasekhar explosions, as well as deflagration models calculated in three dimensions. Our results require that the supernova ejecta retain some degree of chemical stratification, with Fe-peak elements interior to intermediate mass elements. This strongly suggests that a supersonic burning front (i.e., a detonation) must be involved at some stage in the physics of Type Ia supernova explosions.
description: 42 pages, 10 figures, 6 tables. Replaced by the accepted version (no major changes)
Pulsed Electron Spin Resonance of an Organic Microcrystal by Dispersive Readout
Creators: name: Keyser, Ailsa
name: Burnett, Jonathan
name: Kubatkin, Sergey
name: Danilov, Andrey
name: Oxborrow, Mark
name: de Graaf, Sebastian
name: Lindström, Tobias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We establish a testbed system for the development of high-sensitivity Electron Spin Resonance (ESR) techniques for small samples at cryogenic temperatures. Our system consists of a Niobium Nitride thin-film planar superconducting microresonator designed to have a concentrated mode volume to couple to a small amount of paramagnetic material, and to be resilient to magnetic fields of up to 400 mT. At 65 mK we measure high-cooperativity coupling ($C \approx 19$) to an organic radical microcrystal containing $10^{12}$ spins in a pico-litre volume. We detect the spin-lattice decoherence rate via the dispersive frequency shift of the resonator. Techniques such as these could be suitable for applications in quantum information as well as for pulsed ESR interrogation of very few spins and could provide insights into the surface chemistry of, for example, the material defects in superconducting quantum processors.
description: 8 pages 5 figures
Recycling of cullet and filter dust in the German glass industry
Creators: name: Schaeffer, Helmut A.
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1996
Subjects: subject: 660

description: Increasing ecological constraints linked with economic advantages have induced the recychng o f cullet predominantly in the Container glass industry as well as the recycling of filter dust in various branches of glass production. The recycling of cullet, originating from non-refillable glass packaging was introduced more than 20 years ago, whereas the recycling of filter dust originating from waste gas treatment, was started only a few years ago. The transition from employing basically constant raw materials to utilizing increasing amounts of recycled glass as the major batch material and the introduction of filter dust as an additive (refining agent) have imposed new challenges on glass melting. Difficulties result from the incorporation and possible enrichment of impurity components such as metals and halogens and furthermore from the unknown and changing amounts of organic contaminations. Special efforts will be discussed which help to improve the reproducibility of glass melting with high portions of cullet by employing an in-situ control of the redox State in the glass melt.
Understanding Agricultural Liability: Premise’s Liability
Creators: name: Goeringer, Paul
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: landowner liability
trespass
licensee
invitee
negligence
recreational use statute
legal risks
ag law
agricultural law

description: This publication provides an overview of landowner liability and Maryland's recreational use statute.  Topics covered will be negligence as it relates to trespassers, invitees, and licensees.
description: You can take steps to limit your potential liability by understanding your legal obligation or duty to protect visitors and other third parties from foreseeable harm. You also will need to know to whom you owe the duty and what duty others may owe to you.  Steps you can take to limit your liability include obtaining insurance, procuring releases, and providing warnings. You
should work with a licensed attorney in your area and your insurance agent to identify the tools that will work best
for you.
Enhancing Information Literacy Instruction with Google Drive
Creators: name: Putnam, Laksamee
Publisher: name: Maryland Shared Open Access Repository
Year: 2015
Subjects: Google
library instruction
instructional technology

description: By using the various tools available through Google Drive (forms, spreadsheets, presentations), librarians can increase student participation and provide more interactive instruction sessions. This chapter will profile how one academic librarian integrates Google tools into lesson plans, and provide examples of in-class activities for a range of topics, from citation style to database practice.
Dark Matter Halos: Shapes, The Substructure Crisis, and Indirect Detection
Creators: name: Zentner, Andrew R.
name: Koushiappas, Savvas M.
name: Kazantzidis, Stelios
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this proceeding, we briefly review three recent results. First, we show that halos formed in simulations with gas cooling are significantly rounder than halos formed in dissipationless $N$-body simulations. The increase in principle axis ratios is $δ(c/a) ~ 0.2 - 0.4$ in the inner halo and remains significant at large radii. Second, we discuss the CDM substructure crisis and demonstrate the sensitivity of the crisis to the spectrum of primordial density fluctuations on small scales. Third, we assess the ability of experiments like VERITAS and GLAST to detect $γ$-rays from neutralino dark matter annihilation in dark subhalos about the MW.
description: 7 Pages, 3 Figures, Review to appear in The Proceedings of the Fifth International Workshop on the Identification of Dark Matter
Real-time Webcam Heart-Rate and Variability Estimation with Clean Ground Truth for Evaluation
Creators: name: Gudi, Amogh
name: Bittner, Marian
name: van Gemert, Jan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Remote photo-plethysmography (rPPG) uses a camera to estimate a person's heart rate (HR). Similar to how heart rate can provide useful information about a person's vital signs, insights about the underlying physio/psychological conditions can be obtained from heart rate variability (HRV). HRV is a measure of the fine fluctuations in the intervals between heart beats. However, this measure requires temporally locating heart beats with a high degree of precision. We introduce a refined and efficient real-time rPPG pipeline with novel filtering and motion suppression that not only estimates heart rates, but also extracts the pulse waveform to time heart beats and measure heart rate variability. This unsupervised method requires no rPPG specific training and is able to operate in real-time. We also introduce a new multi-modal video dataset, VicarPPG 2, specifically designed to evaluate rPPG algorithms on HR and HRV estimation. We validate and study our method under various conditions on a comprehensive range of public and self-recorded datasets, showing state-of-the-art results and providing useful insights into some unique aspects. Lastly, we make available CleanerPPG, a collection of human-verified ground truth peak/heart-beat annotations for existing rPPG datasets. These verified annotations should make future evaluations and benchmarking of rPPG algorithms more accurate, standardized and fair.
description: Published in the MDPI Applied Sciences journal special issue Video Analysis for Health Monitoring on December 2, 2020. arXiv admin note: text overlap with arXiv:1909.01206
Delineation of Horizontal Curves
Creators: name: Agent, Kenneth R.
name: Creasey, Tom
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1986
Subjects: subject: Transportation Engineering

description: The objective of this study was to investigate the ability of various traffic control measures to delineate horizontal curves so drivers would perceive the curve and slow to an appropriate speed and then be provided guidance through the curve. Pavement delineation (raised pavement markers, transverse stripes, or rumble strips) and shoulder delineation (post delineators and chevron signs) were used. A laboratory test found that a post delineator configuration in which the distance from the post to the pavement edge and the post spacing remained constant while the height of the delineator on the post increased made a curve appear sharper than other delineator configurations. The delineation treatments did not dramatically decrease speeds at the point of curve, but encroachments decreased substantially and the severity of the encroachments was reduced at locations that originally had a high proportion of moderate or severe encroachments. Pavement delineation had more of an affect than shoulder delineation. Also, chevron signs were more effective than post delineators.
Phasors for fluid conductors and vertical electric glass melters
Creators: name: Spremulli, Paul F.
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1996
Subjects: subject: 660

description: Phasors are useful in electrical engineering but they are even more useful when used to display and/or explain phenomena associated with fluid conductors. Phasor diagrams include not only the applied voltages but all the voltages found in the fluid. This has been illustrated by constructing and discussing phasor diagrams for a variety of circuits used in vertical glass melters. It has been shown that these diagrams can disclose wiring errors and/or undesirable voltage distributions. In many cases they can lead to designing improved circuits and/or alternate circuits which may have equivalent voltage distributions. Phasor diagrams have also been used as an aid in designing new circuitry with symmetrical electrical distributions. Simultaneous consideradon of current and voltage phasors yields correct phase angles and equations to calculate power.
Aharonov-Bohm effect for an exciton in a finite width nano-ring
Creators: name: Palmero, F.
name: Dorignac, J.
name: Eilbeck, J. C.
name: Romer, R. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Aharonov-Bohm effect for an exciton on a nano-ring using a 2D attractive fermionic Hubbard model. We extend previous results obtained for a 1D ring in which only azimuthal motion is considered, to a more general case of 2D annular lattices. In general, we show that the existence of the localization effect, increased by the nonlinearity, makes the phenomenon in the 2D system similar to the 1D case. However, the introduction of radial motion introduces extra frequencies, different from the original isolated frequency corresponding to the excitonic Aharonov-Bohm oscillations. If the circumference of the system becomes large enough, the Aharonov-Bohm effect is suppressed.
description: 28 pages, 12 figures
The Burning of Santa Catarina (I)
Creators: name: Ochurte, Rufino
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: “When I have Donned My Crest of Stars” (University of Utah Press, 1983), p. 225 for transcription, segmentation, glossing, and translation of this story.
In-medium modification of dijets in PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Modifications to the distribution of charged particles with respect to high transverse momentum ($p_\mathrm{T}$) jets passing through a quark-gluon plasma are explored using the CMS detector. Back-to-back dijets are analyzed in lead-lead and proton-proton collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV via correlations of charged particles in bins of relative pseudorapidity and angular distance from the leading and subleading jet axes. In comparing the lead-lead and proton-proton collision results, modifications to the charged-particle relative distance distribution and to the momentum distributions around the jet axis are found to depend on the dijet momentum balance $x_j$, which is the ratio between the subleading and leading jet $p_\mathrm{T}$. For events with $x_j$ $\approx$ 1, these modifications are observed for both the leading and subleading jets. However, while subleading jets show significant modifications for events with a larger dijet momentum imbalance, much smaller modifications are found for the leading jets in these events.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-19-013 (CMS Public Pages)
Evaluation of Durable Crosswalk and Stopbar Marking Materials
Creators: name: Agent, Kenneth R.
name: Pigman, Jerry G.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1986
Subjects: subject: Transportation Engineering

description: The objective of this study was to find the most cost-effective durable marking material to provide long-lasting stop bars and crossbars. Three materials were tested: 1) 3M Stamark tape, 2) Prismo preformed tape, and 3) extruded thermoplastic (hydrocarbon and alkyd). The various test installations were in place for between 6 and 30 months.  The alkyd-resin thermoplastic material was found to be the most cost-effective I material. The preformed tapes cost two to three times as much as the thermoplastic material while not providing as durable a material when used in this application.The alkyd-resin material maintained its appearance better than the hydrocarbon-resin material.  Use of alkyd-resin extruded thermoplastic material was recommended either by contract or with Kentucky Transportation Cabinet personnel if the necessary equipment was obtained. The exceptions where preformed tape shall be used were 1) at isolated intersections where use of thermoplastic installation equipment was impractical and 2) on concrete pavements.
Natural orbits of atomic Cooper pairs in a nonuniform Fermi gas
Creators: name: Pong, Y. H.
name: Law, C. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the basic mode structure of atomic Cooper pairs in an inhomogeneous Fermi gas. Based on the properties of Bogoliubov quasi-particle vacuum, the single particle density matrix and the anomalous density matrix share the same set of eigenfunctions. These eigenfunctions correspond to natural pairing orbits associated with the BCS ground state. We investigate these orbits for a Fermi gas in a spherical harmonic trap, and construct the wave function of a Cooper pair in the form of Schmidt decomposition. The issue of spatial quantum entanglement between constituent atoms in a pair is addressed.
description: 14 pages, 4 figures, submitted to Phys. Rev. A
Thermal behavior of metallic aluminum in a Container glass melt
Creators: name: Reisch, Renate
name: Stachel, Dörte
name: Traufelder, Steffi
name: Tessmann, Elke
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1996
Subjects: subject: 660

description: The thermal behavior o f metallic aluminum was studied in the temperature ränge of 1100 to 1500°C in a Container glass melt. The dissolution of the metal was determined as a function of aluminum input, glass volume, melting time and the type of glass used. By analogy, melts containing magnesium cuttings were also investigated. With the aid of electron microscopy, it was possible to establish a reaction scheme of Oxidation and reduction processes. Only 2 to 3 % of the aluminum introduced causes the formation of silicon spheres. The main part will be oxidized through reactions with oxygen, hydroxide and polyvalent ions in the melt.
Yet another test of Radial Acceleration Relation for galaxy clusters
Creators: name: Pradyumna, S.
name: Gupta, Sajal
name: Seeram, Sowmya
name: Desai, Shantanu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We carry out a test of the radial acceleration relation (RAR) for galaxy clusters from two different catalogs compiled in literature, as an independent cross-check of two recent analyses, which reached opposite conclusions. The datasets we considered include a Chandra sample of 12 clusters and the X-COP sample of 12 clusters. For both the samples, we find that the residual scatter is small (0.11-0.14 dex), although the best-fit values for the Chandra sample have large error bars. Therefore, we argue that at least one of these cluster samples (X-COP) obeys the radial acceleration relation. However, since the best-fit parameters are discrepant with each other as well as the previous estimates, we argue that the RAR is not universal. For both the catalogs, the acceleration scale, which we obtain is about an order of magnitude larger than that obtained for galaxies, and is agreement with both the recent estimates.
description: 11 pages, 4 figures. Computed residual scatter for both the samples. Accepted for publication in Phys. Dark Universe
Effect of memory on the prisoner's dilemma game in a square lattice
Creators: name: Qin, Shao-Meng
name: Chen, Yong
name: Zhao, Xiao-Ying
name: Shi, Jian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We have studied the effect of memory on evolution of the prisoner's dilemma game using square lattice networks. Based on extensive simulations, we found that the density of cooperators was enhanced by an increasing memory effect for most parameters. However, we also observed that the density of cooperators decreased with an increased memory effect in the case of a large memory and moderate temptation. It is interesting to note that memory makes cooperators immune from temptation. The strength of protection reaches its maximal value only for the moderate memory effect.
description: 6 papers, 6 figures
A tool for formal verification of DSP assembly language programs
Creators: name: Currie, David W.
Publisher: name: University of British Columbia
Year: 2009

description: Formal verification has, in recent years, become widely used in the design and implementation of large integrated circuits, but its use in general software verification has been more limited. We have developed a new technique to verify assembly code for digital signal processors (DSPs) that makes significant steps into the realm of software verification and serves as a good building block for future verification efforts. In order to demonstrate the applicability of our approach, which takes inspiration from successful techniques applied in hardware verification, we have implemented a prototype tool to verify assembly code for a Fujitsu DSP chip. The approach we have created is based on symbolic simulation with uninterpreted functions and control flow analysis. DSP assembly language programs are an attractive target for formal verification. On one hand, DSP assembly language programs must often be modified for size and speed constraints which requires that the code be optimized by taking advantage of the idiosyncrasies of the chip. This optimization can make even small programs hard to reason about and debug. On the other hand, verification of optimized versus unoptimized versions of the same program can be simplified by exploiting the similarities between the two. This combination produces an application domain that is simultaneously challenging yet tractable. This thesis describes our verification approach and how we were able to successfully implement a prototype tool.
CoroBase: Coroutine-Oriented Main-Memory Database Engine
Creators: name: He, Yongjun
name: Lu, Jiacheng
name: Wang, Tianzheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Data stalls are a major overhead in main-memory database engines due to the use of pointer-rich data structures. Lightweight coroutines ease the implementation of software prefetching to hide data stalls by overlapping computation and asynchronous data prefetching. Prior solutions, however, mainly focused on (1) individual components and operations and (2) intra-transaction batching that requires interface changes, breaking backward compatibility. It was not clear how they apply to a full database engine and how much end-to-end benefit they bring under various workloads. This paper presents \corobase, a main-memory database engine that tackles these challenges with a new coroutine-to-transaction paradigm. Coroutine-to-transaction models transactions as coroutines and thus enables inter-transaction batching, avoiding application changes but retaining the benefits of prefetching. We show that on a 48-core server, CoroBase can perform close to 2x better for read-intensive workloads and remain competitive for workloads that inherently do not benefit from software prefetching.
description: To appear in VLDB 2021
Glazing solar parameters evaluated by ISO, CEN and ASTM Standard procedures
Creators: name: Polato, Pietro
name: Daneo, Antonio
name: Roucour, Jean
name: Conti, Angelo
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1996
Subjects: subject: 660

description: The solar behaviour of glazing for architectural or automotive applications is generally characterized by (near) normal incidence spectrophotometry The spectral transmittance and reflectance curves are integrated in the solar range using a global or direct solar irradiance curve at sea level as a weighting function. These solar curves can be obtained taking into account the effects of the atmosphere on the extraterrestrial solar radiation and comparing the computed spectra with the measured spectral irradiance values on the earth surface. However, the theoretical global and direct solar curves depend on the model used to simulate the atmospheric behaviour (type of model and values assumed for the atmospheric parameters). Moreover, solar irradiance measurements made at ground level were limited in accuracy, at least in the past. For these reasons different solar curves were standardized by ISO, CEN and ASTM. Glass samples representative of commercial production are considered in this paper and a comparison is performed among t he values obtained for the solar parameters following international. European and American Standards .