cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Masses of the components of the HDE 226868/Cyg X-1 binary system
Creators: name: Ziolkowski, Janusz
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent determination of the distance to HDE 226868/Cyg X-1 binary system (Reid et al., 2011) and more precise determination of the effective temperature of HDE 226868 (Caballero- Nieves et al., 2009) permit a more accurate estimate of the masses of both components. Using up to date evolutionary models, I obtain a mass range of between 25 to 35 Msun for the mass of the supergiant and between 13 to 23 Msun for the mass of the black hole. Accepting more liberal estimates of uncertainties in both the distance and the effective temperature, one may extend these ranges to 21 to 35 Msun and 10 to 23 Msun for both masses, respectively. The most likely values within these ranges are, respectively, 27 Msun and 16 Msun. The obtained mass of black hole agrees with the value 15 +- 1 Msun suggested by Orosz et al. (2011). However, the value suggested by them for the mass of the supergiant of 19 +- 2 Msun should not be used as such a star violates the mass-luminosity relation for the the massive core hydrogen burning stars. This consideration was not incorporated into the iterative process of Orosz et al. To resolve this violation I consider the possibility that the hydrogen content of HDE 222268 might be lowered as a result of the mass transfer and the induced fast rotation of the mass gainer. I analyzed the evolutionary effects of such situation and found that, while important, they do not invalidate the conclusions listed above. If, as a result of the rotation induced mixing, the present hydrogen content of HDE 226868 is equal about 0.6 (as suggested by some observational data), then its present mass may be somewhat lower: about 24 Msun rather than about 27 Msun.
description: accepted for publication in MNRAS
Magnified image of CK302-16763 with cut marks on bison metapodial
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Metapodial
Cut Marks
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Metapodial lateral aspect at 18.9 magnification.
Compressing IP Forwarding Tables: Towards Entropy Bounds and Beyond
Creators: name: Rétvári, Gábor
name: Tapolcai, János
name: Kőrösi, Attila
name: Majdán, András
name: Heszberger, Zalán
Publisher: name: arXiv
Year: 2014
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: C.2.1; E.4

description: Lately, there has been an upsurge of interest in compressed data structures, aiming to pack ever larger quantities of information into constrained memory without sacrificing the efficiency of standard operations, like random access, search, or update. The main goal of this paper is to demonstrate how data compression can benefit the networking community, by showing how to squeeze the IP Forwarding Information Base (FIB), the giant table consulted by IP routers to make forwarding decisions, into information-theoretical entropy bounds, with essentially zero cost on longest prefix match and FIB update. First, we adopt the state-of-the-art in compressed data structures, yielding a static entropy-compressed FIB representation with asymptotically optimal lookup. Then, we re-design the venerable prefix tree, used commonly for IP lookup for at least 20 years in IP routers, to also admit entropy bounds and support lookup in optimal time and update in nearly optimal time. Evaluations on a Linux kernel prototype indicate that our compressors encode a FIB comprising more than 440K prefixes to just about 100--400 KBytes of memory, with a threefold increase in lookup throughput and no penalty on FIB updates. This technical report contains a number of important corrections and revisions to the original manuscript.
title: Catching heuristics are optimal control policies
Creators: name: Belousov, Boris
name: Neumann, Gerhard
name: Rothkopf, Constantin A.
name: Peters, Jan
Publisher: name: Neural Information Processing Systems
Year: 2022

description: Two seemingly contradictory theories attempt to explain how humans move to intercept an airborne ball. One theory posits that humans predict the ball trajectory to optimally plan future actions; the other claims that, instead of performing such complicated computations, humans employ heuristics to reactively choose appro- priate actions based on immediate visual feedback. In this paper, we show that interception strategies appearing to be heuristics can be understood as computa- tional solutions to the optimal control problem faced by a ball-catching agent acting under uncertainty. Modeling catching as a continuous partially observable Markov decision process and employing stochastic optimal control theory, we discover that the four main heuristics described in the literature are optimal solutions if the catcher has sufficient time to continuously visually track the ball. Specifically, by varying model parameters such as noise, time to ground contact, and perceptual latency, we show that different strategies arise under different circumstances. The catcher’s policy switches between generating reactive and predictive behavior based on the ratio of system to observation noise and the ratio between reaction time and task duration. Thus, we provide a rational account of human ball-catching behavior and a unifying explanation for seemingly contradictory theories of target interception on the basis of stochastic optimal control.
Magnified image of CK302-17001 with cut marks on bison tibia
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Tibia
Cut Marks
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Tibia lateral aspect at 16.9 magnification.
Status of the light-by-light scattering and the $(g-2)_{\mu}$
Creators: name: Masjuan Queralt, Pere
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Anomalous magnetic moment of the muon; light-by-light scattering contributio

description: In this talk we review the recent progress on the numerical determination of the Hadronic Light-by-Light contribution to the anomalous magnetic moment of the muon and we discuss the role of experimental data on the accuracy of its determination. Special emphasis on the main contribution, the pseudoscalar piece, is made. Gathering recent progress in the light-by-light scattering contribution we consider $a_{\mu}^{{\mathrm{HLBL}}} = (12.1\pm3.0)\times10^{-10}$ as a good summary of the state-of-the-art calculations which still claims for a $4\sigma$ deviation between theory and experiment for the $(g-2)_{\mu}$.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
48CK302-533, Side Notched Point, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite side notched projectile point, missing the very tip. Provenience: W3-?-58" BD
48CK302-18665, Granite Cobble, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Cobble
Granite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a granite cobble, possible chopper. Provenience: N1-1-2
A phononic bandgap shield for high-Q membrane microresonators
Creators: name: Yu, P. -L.
name: Cicak, K.
name: Kampel, N. S.
name: Tsaturyan, Y.
name: Purdy, T. P.
name: Simmonds, R. W.
name: Regal, C. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A phononic crystal can control the acoustic coupling between a resonator and its support structure. We micromachine a phononic bandgap shield for high Q silicon nitride membranes and study the driven displacement spectra of the membranes and their support structures. We find that inside observed bandgaps the density and amplitude of non-membrane modes are greatly suppressed, and membrane modes are shielded from an external mechanical drive by up to 30 dB.
description: 5 pages, 4 figures
Les obstacles à l'apprentissage de la gamétogenèse et de la fécondation en classes de terminales C et D
Creators: name: Mathias Kyélem
name: Abdoulaye Balboné
name: Innocent Kiemdé
Publisher: name: Zenodo
Year: 2024

description: Le savoir portant sur la gamétogénèse et la fécondation étudiées dans les classes de terminale scientifique (séries C et D) vient renforcer et compléter les acquis des classes de 6ème et 3ème sur la reproduction humaine et sert de prérequis à l’apprentissage de la génétique et notamment de l’hérédité. Cependant, l’appropriation des connaissances par les apprenants est confrontée à des obstacles didactiques. L’étude était destinée à connaître ces obstacles et leurs sources. Elle a utilisé une approche mixte, qualitative et quantitative et a concerné des enseignants et des élèves des classes de terminales C et D de cinq établissements secondaires des villes de Koudougou et de Réo au Burkina Faso. Il ressort des résultats obtenus que ces obstacles proviennent des méthodes et techniques d’enseignement, des supports didactiques et du style d’apprentissage des élèves. La mise en œuvre de la pédagogie de l’intégration, en perspective, ne pourra contribuer à améliorer les résultats en apprentissage que si les compétences des enseignants en transposition didactique interne sont améliorées et des moyens d’enseignement-apprentissage suffisants et adéquats fournis aux établissements.
Magnified image of CK302-14675 with carnivore gnawing on bison innominate
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Innominate
Carnivore Gnawing
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Innominate lateral aspect at 9.1 magnification.
title: Receding Horizon Curiosity
Creators: name: Schultheis, Matthias
name: Belousov, Boris
name: Abdulsamad, Hany
name: Peters, Jan
Publisher: name: PMLR
Year: 2022

description: Sample-efficient exploration is crucial not only for discovering rewarding experiences but also for adapting to environment changes in a task-agnostic fashion. A principled treatment of the problem of optimal input synthesis for system identification is provided within the framework of sequential Bayesian experimental design. In this paper, we present an effective trajectory-optimization-based approximate solution of this otherwise intractable problem that models optimal exploration in an unknown Markov decision process (MDP). By interleaving episodic exploration with Bayesian nonlinear system identification, our algorithm takes advantage of the inductive bias to explore in a directed manner, without assuming prior knowledge of the MDP. Empirical evaluations indicate a clear advantage of the proposed algorithm in terms of the rate of convergence and the final model fidelity when compared to intrinsic-motivation-based algorithms employing exploration bonuses such as prediction error and information gain. Moreover, our method maintains a computational advantage over a recent model-based active exploration (MAX) algorithm, by focusing on the information gain along trajectories instead of seeking a global exploration policy. A reference implementation of our algorithm and the conducted experiments is publicly available.
48CK302-442, Side Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Chert
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of red chert side notched projectile point, complete. Provenience: N1-11-91.8"
The variability of crater identification among expert and community crater analysts
Creators: name: Robbins, Stuart J.
name: Antonenko, Irene
name: Kirchoff, Michelle R.
name: Chapman, Clark R.
name: Fassett, Caleb I.
name: Herrick, Robert R.
name: Singer, Kelsi
name: Zanetti, Michael
name: Lehan, Cory
name: Huang, Di
name: Gay, Pamela L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The identification of impact craters on planetary surfaces provides important information about their geological history. Most studies have relied on individual analysts who map and identify craters and interpret crater statistics. However, little work has been done to determine how the counts vary as a function of technique, terrain, or between researchers. Furthermore, several novel internet-based projects ask volunteers with little to no training to identify craters, and it was unclear how their results compare against the typical professional researcher. To better understand the variation among experts and to compare with volunteers, eight professional researchers have identified impact features in two separate regions of the moon. Small craters (diameters ranging from 10 m to 500 m) were measured on a lunar mare region and larger craters (100s m to a few km in diameter) were measured on both lunar highlands and maria. Volunteer data were collected for the small craters on the mare. Our comparison shows that the level of agreement among experts depends on crater diameter, number of craters per diameter bin, and terrain type, with differences of up to $\sim\pm45%$. We also found artifacts near the minimum crater diameter that was studied. These results indicate that caution must be used in most cases when interpreting small variations in crater size-frequency distributions and for craters $\le10$ pixels across. Because of the natural variability found, projects that emphasize many people identifying craters on the same area and using a consensus result are likely to yield the most consistent and robust information.
description: 72 pages, 11 figures, 5 tables. Robbins, S.J., et al. The variability of crater identification among expert and community crater analysts. Icarus (2014), http://dx.doi.org/10.1016/j.icarus.2014.02.022
Exploring pseudo-Nambu-Goldstone bosons in the sub-eV to 10 keV mass range with stimulated photon collider
Creators: name: Homma, Kensuke
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Nambu-Goldstone Boson; dark matter; dark energy; SAPPHIRES

description: Generic laboratory searches for pseudo-Nambu-Goldstone bosons (pNGBs)

in weak-coupling domains beyond the GUT scale are

indispensable for understanding the dark components in the universe.

We introduce a novel approach to search for resonantly produced pNGBs

coupled to two photons in the mass range from sub-eV to 10~keV

by colliding plural laser fields to induce the rare scattering process.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Order Reduction of the Chemical Master Equation via Balanced Realisation
Creators: name: Lopez-Caamal, Fernando
name: Marquez-Lago, Tatiana T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We consider a Markov process in continuous time with a finite number of discrete states. The time-dependent probabilities of being in any state of the Markov chain are governed by a set of ordinary differential equations, whose dimension might be large even for trivial systems. Here, we derive a reduced ODE set that accurately approximates the probabilities of subspaces of interest with a known error bound. Our methodology is based on model reduction by balanced truncation and can be considerably more computationally efficient than the Finite State Projection Algorithm (FSP) when used for obtaining transient responses. We show the applicability of our method by analysing stochastic chemical reactions. First, we obtain a reduced order model for the infinitesimal generator of a Markov chain that models a reversible, monomolecular reaction. In such an example, we obtain an approximation of the output of a model with 301 states by a reduced model with 10 states. Later, we obtain a reduced order model for a catalytic conversion of substrate to a product; and compare its dynamics with a stochastic Michaelis-Menten representation. For this example, we highlight the savings on the computational load obtained by means of the reduced-order model. Finally, we revisit the substrate catalytic conversion by obtaining a lower-order model that approximates the probability of having predefined ranges of product molecules.
description: 12 pages, 6 figures
Magnified image of CK302-13712 with carnivore gnawing on bison mandible
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Mandible
Carnivore Gnawing
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Mandible inferior aspect at 24.3 magnification.
Photoproduction with a mini-jet model and Cosmic Ray showers
Creators: name: Cornet, Fernando
name: Garcia-Canal, Carlos
name: Grau, Agnes
name: Pancheri, Giulia
name: Sciutto, Sergio
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Total photo-production cross section; mini-jet models; cosmic rays; shower development

description: We present post-LHC updates of estimates of the total photo-production cross
section in a mini-jet model with infrared soft gluon resummation, and apply
the model to study Cosmic Ray shower development, comparing the results
with those obtained from other existing models.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Magnified image of CK302-16165 with bone tool working surface on bison tibia
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Tibia
Polishing
Bone Tool
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Tibia anterior aspect at 9.0 magnification.
Extending Smooth Cyclic Group Actions on the Poincare Homology Sphere
Creators: name: Anvari, Nima
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 58D19, 57S17, 70S15

description: Let $X_0$ denote a compact, simply-connected smooth $4$-manifold with boundary the Poincaré homology $3$-sphere $Σ(2,3,5)$ and with even negative definite intersection form $Q_{X_0}=E_8$. We show that free $\mathbb{Z}/p$ actions on $Σ(2,3,5)$ do not extend to smooth actions on $X_0$ with isolated fixed points for any prime $p>7$. The approach is to study the equivariant version of the Yang-Mills instanton-one moduli space for $4$-manifolds with cylindrical ends. As an application we show that for $p>7$ a smooth $\mathbb{Z}/p$ action on $\#^8 S^2 \times S^2$ with isolated fixed points does not split along a free action on $Σ(2,3,5)$. The results hold for $p=7$ if the action is homologically trivial.
description: 37 pages, 2 figures
Very forward photon production in proton-proton collisions at √s = 13 TeV measured with the LHCf experiment
Creators: name: Tiberio, Alessio
Publisher: name: CERN Proceedings
Year: 2018
Subjects: LHCf; photon; hadronic interaction model; cosmic ray; forward physics

description: The latest physics results of LHCf photon analysis are reported in this paper.
The inclusive energy spectrum of photons produced in proton-proton collisions at √s = 13 TeV are shown. The results are compared with the prediction of hadronic interaction models commonly used in air-shower simulations of ultra-high-energy cosmic rays. Even if experimental data lie between the models, there is not a single model consistent with data in all the energy range.
The better overall prediction is given by EPOS-LHC hadronic interaction model.
The electromagnetic energy flow as a function of pseudorapidity is also presented, showing a good agreement of EPOS-LHC and SIBYLL 2.3 models with data.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Lifetime of Single-Particle Excitations in a Dilute Bose-Einstein Condensate at Zero Temperature
Creators: name: Tsutsui, Kazumasa
name: Kita, Takafumi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the lifetime of single-particle excitations in a dilute homogeneous Bose-Einstein condensate at zero temperature based on a self-consistent perturbation expansion of satisfying Goldstone's theorem and conservation laws simultaneously.It is shown that every excitation for each momentum ${\bf p}$ should have a finite lifetime proportional to the inverse $a^{-1}$ of the $s$-wave scattering length $a$, instead of $a^{-2}$ for the normal state, due to a new class of Feynman diagrams for the self-energy that emerges upon condensation. We calculate the lifetime as a function of $|{\bf p}|$ approximately.
description: 5 pages, 7 figures
Search for Ultra-High Energy Photons with the Pierre Auger Observatory
Creators: name: Homola, Piotr
Publisher: name: CERN Proceedings
Year: 2018
Subjects: cosmic rays; ultra-high energy photons; upper limits to UHE photon fluxes

description: One of key scientific objectives of the Pierre Auger Observatory is the search for ultra-high energy photons. Such photons could originate either in the interactions of energetic cosmic-ray nuclei with the cosmic microwave background (so-called cosmogenic photons) or in the exotic scenarios, e.g. those assuming a production and decay of some hypothetical super-massive particles. The latter category of models would imply relatively large fluxes of photons with ultra-high energies at Earth, while the former, involving interactions of cosmic-ray nuclei with the microwave background - just the contrary: very small fractions. The investigations on the data collected so far in the Pierre Auger Observatory led to placing very stringent limits to ultra-high energy photon fluxes: below the predictions of the most of the exotic models and nearing the predicted fluxes of the cosmogenic photons. In this paper the status of these investigations and perspectives for further studies are summarized.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Scrub Typhus Public Engagement in Northern Thailand - Teaching flipchart in Thai and translation into English
Creators: name: Wangrangsimakul, Tri
name: Kanthawang, Nipaphan
name: Jaiboon, Piangnet
Publisher: name: Zenodo
Year: 2023
Subjects: Scrub typhus, community engagement, prevention

description: A flipchart used as teaching material for public engagement activities to raise awareness and promote prevention of scrub typhus in Chiangrai province, Northern Thailand. The original flipchart file and a separate file with the transation in English are attached.
Search for Extensive Photon Cascades with the Cosmic-Ray Extremely Distributed Observatory
Creators: name: Homola, Piotr
Publisher: name: CERN Proceedings
Year: 2018
Subjects: cosmic rays; ultra-high energy photons; photon ensembles

description: Although the photon structure is most efficiently studied with the accelerator instruments, there is also
a scientifically complementary potential in investigations on photons produced in the outer space.
This potential is already being explored with gamma ray telescopes, ultra-high energy cosmic ray observatories
and, since very recently, by the Cosmic-Ray Extremely Distributed Observatory (CREDO).
Unlike the former instruments focused on detection of single photons, CREDO aims at the detection
of cascades (ensembles) of photons originating even at astrophysical distances.
If at least a part of such a cascade reaches Earth, it might produce a unique pattern
composed of a number of air showers observable by an appropriately dense array of standard detectors.
If the energies of air showers constituting the pattern are relatively low and if the typical
distances between the neighbors are large, the ensemble character of the whole phenomenon
might remain uncovered, unless the CREDO strategy is implemented.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Maria Krawczyk : friend and physicist
Creators: name: Godbole, Rohini M.
name: Pancheri, Giulia
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Maria Krawczyk, photon, Higgs

description: We remember here our friend and colleague Maria Krawczyk, Professor of Physics at Warsaw University, who passed away suddenly on May 24th 2017. Her contribution to physics and her great personal qualities are described.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
One-dimensional linear array of cylindrical posts for size-based deterministic separation of binary suspensions
Creators: name: Devendra, Raghavendra
name: Drazer, German
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the motion of suspended particles past a single line of equally spaced cylindrical posts that is slanted with respect to the driving force. We show that such a one-dimensional array of posts can fractionate particles according to their size, with small particles permeating through the line of posts but larger particles being deflected by the steric barrier created by the posts, even though the gaps between posts are larger than the particles. We perform characterization experiments driving monodisperse suspensions of particles of different size past the line of posts over the entire range of forcing orientations and present both the permeation probability through the individual gaps between the posts as well as the fraction of permeating particles through the one-dimensional array. In both cases, we observe a sharp transition from deflection to permeation mode that is a function of particle size, thus enabling separation. We then drive binary mixtures at selected orientations of the line of posts and demonstrate high purity and efficiency of separation.
Magnified image of CK302-16806 with polishing on a bison anterior metapodial
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Anterior Metapodial
Polishing
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Anterior Metapodial anterior aspect at 16.2 magnification.
A first-principles-based correlation functional for harmonious connection of short-range correlation and long-range dispersion
Creators: name: Modrzejewski, Marcin
name: Lesiuk, Michał
name: Rajchel, Łukasz
name: Szczęśniak, Małgorzata M.
name: Chałasiński, Grzegorz
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a physically motivated correlation functional belonging to the meta-generalized gradient approximation (meta-GGA) rung, which can be supplemented with long-range dispersion corrections without introducing double-counting of correlation contributions. The functional is derived by the method of constraint satisfaction, starting from an analytical expression for a real-space spin-resolved correlation hole. The model contains a position-dependent function that controls the range of the interelectronic correlations described by the semilocal functional. With minimal empiricism, this function may be adjusted so that the correlation model blends with a specific dispersion correction describing long-range contributions. For a preliminary assessment, our functional has been combined with the DFT-D3 dispersion correction and full Hartree-Fock (HF)-like exchange. Despite the HF-exchange approximation, its predictions compare favorably with reference interaction energies in an extensive set of non-covalently bound dimers.
Prospects for $\gamma\gamma\to$ Higgs observation in ultraperipheral ion collisions at the Future Circular Collider
Creators: name: Enterria, David
name: Martins, Daniel E.
name: Teles, Patricia Rebello
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Higgs boson; photon-photon; heavy ions; ultraperipheral collisions; FCC

description: We study the two-photon production of the Higgs boson, $\gamma\gamma\to H$, at the Future Circular Collider (FCC) in ultraperipheral PbPb and pPb collisions at $\sqrt{s_{NN}} = 39$ and 63 TeV. Signal and background events are generated with MadGraph-5, including $\gamma$ fluxes from the proton and lead ions in the equivalent
photon approximation, yielding $\sigma(\gamma\gamma\to H)$ = 1.75 nb and 1.5 pb in PbPb and pPb collisions respectively. We analyse the H$\to b\bar{b}$ decay mode
including realistic reconstruction efficiencies for the final-state $b$-jets, showered and hadronized with PYTHIA-8, as well as appropriate selection criteria to reduce the $\gamma\gamma\to b\bar{b},c\bar{c}$ continuum backgrounds. Observation of PbPb$\xrightarrow{\gamma\gamma}$(Pb)H(Pb) is achievable in the first year with the expected FCC integrated luminosities.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Orthogonal bundles and skew-Hamiltonian matrices
Creators: name: Abuaf, Roland
name: Boralevi, Ada
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J60, 15B99

description: Using properties of skew-Hamiltonian matrices and classic connectedness results, we prove that the moduli space $M_{ort}^0(r,n)$ of stable rank $r$ orthogonal vector bundles on $\mathbb{P}^2$, with Chern classes $(c_1,c_2)=(0,n)$, and trivial splitting on the general line, is smooth irreducible of dimension $(r-2)n-{r \choose 2}$ for specific values of $r$ and $n$.
description: 30 pages, 5 figures
Gamma-gamma Collider – A Brief History and Recent Developments
Creators: name: Chou, Weiren
Publisher: name: CERN Proceedings
Year: 2018
Subjects: photon, collider, gamma-ray, light-by-light scattering, pair production

description: There is renewed interest in constructing a gg collider following the discovery of the Higgs boson and the formation of an ICFA (International Committee for Future Accelerators) – ICUIL (International Committee on Ultrahigh Intensity Lasers) collaboration. ICUIL brings state-of-the-art laser technology to build new types of accelerators such as a gg collider.  A recent ICFA mini-workshop on gg colliders investigated the possibility and physics value of a low energy gg collider. This paper uses a 1 MeV (c.m.) gg collider currently under design at IHEP as an example to discuss various aspects of this collider, including the physics case, requirements on the laser beam, the electron beam, the accelerator and detector.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Two-Photon Measurements in ATLAS
Creators: name: Chau, Chav Chhiv
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Photon-photon production; exclusive dilepton; exclusive W boson pairs; QED; EWEAK; anomalous quartic gauge coupling

description: At the Large Hadron Collider, two-photon production is a key process for studying photon interactions at high energies. Measurements of two-photon processes provide a direct access to the photon distribution function in protons and nuclei, and can probe the couplings between four vector bosons ($WW\gamma\gamma$) to find any deviation from the Standard Model. Two-photon measurements reported by the ATLAS Collaboration are presented. These measurments are performed using the proton-proton collisions  at the centre-of-mass energy of 7~TeV ($pp \rightarrow pp\ell^+\ell^-$) and 8~TeV ($pp \rightarrow ppW^+W^- \rightarrow pp e^{\pm}\mu^{\mp}$), and using the lead-lead collisions at the centre-of-mass energy of 5.02~TeV (Pb~+~Pb~$\rightarrow$~Pb~+~Pb~+~$\mu^+\mu^-$).
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Photon-photon measurements in CMS
Creators: name: Chudasama, Ruchi
Publisher: name: CERN Proceedings
Year: 2018
Subjects: QED, Electroweak, New Physics, BSM, Light-by-light

description: We discuss the measurement of photon-photon processes using data collected
by the CMS experiment in pp collisions at sqrt(s) = 7 and sqrt(8) TeV and in PbPb
collisions at sqrt(s_NN) =5.02 TeV.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
Constraints on the outer radius of the broad emission line region of active galactic nuclei
Creators: name: Landt, Hermine
name: Ward, Martin J.
name: Elvis, Martin
name: Karovska, Margarita
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Here we present observational evidence that the broad emission line region (BELR) of active galactic nuclei (AGN) generally has an outer boundary. This was already clear for sources with an obvious transition between the broad and narrow components of their emission lines. We show that the narrow component of the higher-order Paschen lines is absent in all sources, revealing a broad emission line profile with a broad, flat top. This indicates that the BELR is kinematically separate from the narrow emission line region. We use the virial theorem to estimate the BELR outer radius from the flat top width of the unblended profiles of the strongest Paschen lines, Pa alpha and Pa beta, and find that it scales with the ionising continuum luminosity roughly as expected from photoionisation theory. The value of the incident continuum photon flux resulting from this relationship corresponds to that required for dust sublimation. A flat-topped broad emission line profile is produced by both a spherical gas distribution in orbital motion as well as an accretion disc wind if the ratio between the BELR outer and inner radius is assumed to be less than ~100 - 200. On the other hand, a pure Keplerian disc can be largely excluded, since for most orientations and radial extents of the disc the emission line profile is double-horned.
description: 14 pages, 7 figures, accepted by MNRAS
48CK302-519, Side Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a purple quartzite side notched projectile point, complete. Provenience: W2-1-72"
Constraint on Born-Infeld Theory from Light-by-Light Scattering at the LHC
Creators: name: Ellis, Jonathan Richard
name: Mavromatos, Nikolaos
name: You, Tevong
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Light-by-Light scattering; LHC; ATLAS; Born-Infeld theory; magnetic monopole

description: The recent measurement by ATLAS of light-by-light scattering in LHC Pb- Pb collisions is the first direct evidence for this basic process. We find that it excludes a range of the mass scale of a nonlinear Born-Infeld extension of QED that is
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
A Preregistered Systematic Review Towards a Standard for the Alternate Uses Test
Creators: name: Lubart, Todd
name: Benedek, Mathias
name: Zielińska, Aleksandra
name: Karwowski, Maciej
name: Lebuda, Izabela
name: Agnoli, Sergio
name: Barbot, Baptiste
name: Reiter-Palmon, Roni
name: Phelps, Connie
name: Baldacchino, Leonie
name: McKay, Alexander
name: Saretzki, Janika
name: Forthmann, Boris
name: Ivcevic, Zorana
name: Kaufman, James C.
name: Acar, Selcuk
name: CORAZZA, GIOVANNI EMANUELE
name: Thornhill-Miller, Branden
name: Obialo, Felix Kingsley
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Social Work
subject: FOS: Sociology
subject: Alternate Uses Task
subject: Divergent Thinking
subject: Assessment

description: The Alternate Uses Test (AUT) is the “go-to” measure when researchers need to assess divergent thinking, an important component of creative thinking. Yet, the specific AUT configuration varies substantially across studies. Characteristics such as task content, instructions, and scoring of the responses, for example, contribute to this heterogeneity. All this undermines comparability of findings across studies and implies large researcher degrees of freedom with all of its associated disadvantages. In short, an AUT standard is needed. Towards this purpose, we propose and illustrate an evidence-based heuristic: Step 1: Make sure the AUT fits the aim of the study. Step 2: Out of all AUT configurations fitting the aim of the study, use the one with best psychometric evidence. Step 3: Out of all AUT configurations with comparable psychometric evidence, use the one with the best fit to the study constraints. Step 4: Out of all AUT configurations with comparable fit to the study constraints, use the one that best maps onto our review results. This heuristic will be informed by a preregistered systematic review in accordance with Schneider et al. (2021). The review will result in a huge descriptive database on how the AUT has been previously administered and which AUT characteristics provide sound psychometric properties to make the proposed heuristic work. Furthermore, it helps in identifying critical gaps in the psychometric literature on the AUT.
Volume dependence of the Grüneisen ratio for shock-wave equation-of-state studies
Creators: name: Gospodinov, Valentin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This work presents an analysis of the existing self-contained expressions for the volume dependence of the Grüneisen ratio $γ$ in view of their further application to EOS (equation of state) studies. These expressions are assessed and applied to materials with the major types of chemical bonds. Predictions from regression analysis are compared to existing experimental data sets. All expressions predict with very good accuracy the values of $γ$ at ambient conditions, its volume variation in the low pressure region, but fail to give correct values for its infinite compression limit. A possible reason for this is that all experiments are performed at comparatively low pressures. The interpolation formula by Al'tshuler et al. (1987) and the equation, proposed by Jeanloz (1989) are the best fit to experimental data. A modification to Jeanloz's equation, more convenient for use in shock physics, is proposed in the present work. It could be used jointly with the shock Hugoniot to derive a complete EOS for solids from their response to shock-wave loading.
description: 15 pages, 10 figures, 5 tables
48CK302-441, Side Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite projectile point, missing the tip. Provenience: N1-10-66"
title: Online Learning with Stochastic Recurrent Neural Networks using Intrinsic Motivation Signals
Creators: name: Tanneberg, Daniel
name: Peters, Jan
name: Rueckert, Elmar
Publisher: name: PMLR
Year: 2022

description: Continuous online adaptation is an essential ability for the vision of fully autonomous and lifelong-learning robots. Robots need to be able to adapt to changing environments and constraints while this adaption should be performed without interrupting the robot’s motion. In this paper, we introduce a framework for probabilistic online motion planning and learning based on a bio-inspired stochastic recurrent neural network. Furthermore, we show that the model can adapt online and sample-efficiently using intrinsic motivation signals and a mental replay strategy. This fast adaptation behavior allows the robot to learn from only a small number of physical interactions and is a promising feature for reusing the model in different environments. We evaluate the online planning with a realistic dynamic simulation of the KUKA LWR robotic arm. The efficient online adaptation is shown in simulation by learning an unknown workspace constraint using mental replay and cognitive dissonance as intrinsic motivation signal.
Anomalous gauge interactions in photon collisions at the LHC and the FCC
Creators: name: Fichet, Sylvain
name: Baldenegro, Cristian
Publisher: name: CERN Proceedings
Year: 2018
Subjects: anomalous gauge couplings; photon-photon collisions; forward proton spectrometer; LHC; FCC

description: The  forward proton detectors recently installed and operating at the LHC open the possibility to observe photon collisions with high precision, providing a novel window on physics beyond the Standard Model. We review recent simulations and theoretical developments about the measurement of anomalous $\gamma\gamma\gamma\gamma$ and $Z\gamma\gamma\gamma$ interactions. The searches for these anomalous gauge interactions are expected to set bounds on a wide range of  particles including  generic electroweak  particles, neutral particles with dimension-5 coupling to gauge bosons, polarizable dark particles, and are typically complementary from new physics searches in other channels.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
The LHC Ring as a Photon-Photon Search Machine
Creators: name: Orava, Risto
Publisher: name: CERN Proceedings
Year: 2018
Subjects: LHC ring detector; photon-photon collisions; central exclusive production

description: The LHC Collider Ring can be turned into a photon-photon search machine based on Central Exclusive Process (CEP): pp -> p + X + p.  The present extensive Beam Loss Monitoring (BLM) system of the LHC precisely registers the exit points of the final state CEP protons according to their longitudinal momentum losses. The BLM system is being continuously extended, and equipped with fast timing and data acquisition systems, will enable efficient new physics event tagging together with the LHC experiments. The LHC Ring can be used to facilitate an on-line automatic search machine for the physics of tomorrow.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
48CK302-430, Side Notched Point, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite side notched point, complete. Provenience: N1-5-79"
Collective Modes in Light Nuclei from First Principles
Creators: name: Dytrych, T.
name: Launey, K. D.
name: Draayer, J. P.
name: Maris, P.
name: Vary, J. P.
name: Saule, E.
name: Catalyurek, U.
name: Sosonkina, M.
name: Langr, D.
name: Caprio, M. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Results for ab initio no-core shell model calculations in a symmetry-adapted SU(3)-based coupling scheme demonstrate that collective modes in light nuclei emerge from first principles. The low-lying states of 6Li, 8Be, and 6He are shown to exhibit orderly patterns that favor spatial configurations with strong quadrupole deformation and complementary low intrinsic spin values, a picture that is consistent with the nuclear symplectic model. The results also suggest a pragmatic path forward to accommodate deformation-driven collective features in ab initio analyses when they dominate the nuclear landscape.
description: 5 pages 3 figures, accepted to Physical Review Letters
Magnified image of CK302-13899 with carnivore gnawing on bison mandible
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Mandible
Carnivore Gnawing
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Mandible buccal aspect at 19.6 magnification.
An experimental apparatus for study of direct β-radiation conversion for energy harvesting
Creators: name: Haim, Y.
name: Marciano, Y.
name: deBotton, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: This paper introduces the development and testing of an experimental apparatus for characterization of a direct charging nuclear battery. The battery consists of a parallel-plates capacitor which is charged in a vacuum by the current of β-radiation particles (electrons) emitted from a radioisotope. A 63Ni radioisotope with an activity of 15mCi that produces a 20pA current was selected as the radiation source. The apparatus is unique in its design, having ultra-low leakage current and a few options for charge measurements. Preliminary results of a few tests are presented to demonstrate the capabilities of the apparatus.
description: 4 pages, 5 figures
The photon PDF from high-mass Drell-Yan data at the LHC
Creators: name: Bertone, Valerio
Publisher: name: CERN Proceedings
Year: 2018
Subjects: Photon PDF; NLO electroweak corrections; Drell-Yan data

description: I present a determination of the photon PDF from a fit to the recent ATLAS measurements of high-mass Drell-Yan lepton-pair production at $\sqrt{s} = 8$ TeV.  This analysis is based on the {\tt xFitter} framework interfaced to the {\tt APFEL} program, that accounts for NLO QED effects, and to the {\tt aMCfast} code to account for the photon-initiated contributions within {\tt MadGraph5\_aMC@NLO}. The result is compared with other recent determinations of the photon  PDF finding a general good agreement. This writeup is based on  the results presented in Ref.~\cite{Giuli:2017oii}.
description: CERN Proceedings, Vol 1 (2018): Proceedings of the PHOTON'17 Conference
48CK302-450, Side Notched Point, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite side notched projectile point, complete. Provenience: N1-?-(20"-24")
48CK302-402, Side Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of an orange quartzite side notched projectile point, missing the tip. Possible impact fracture. Provenience: E1-?-93"
Magnified image of CK302-13781 with cut marks on bison calcaneus
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Calcaneus
Cut Marks
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Calcaneus medial aspect at 13.7 magnification.