cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Search for a dark photon in the $π^0 \to e^+e^-γ$ decay
Creators: name: COSY Collaboration
name: Adlarson, P.
name: Augustyniak, W.
name: Bardan, W.
name: Bashkanov, M.
name: Bergmann, F. S.
name: Berłowski, M.
name: Bhatt, H.
name: Bondar, A.
name: Büscher, M.
name: Calén, H.
name: Ciepał, I.
name: Clement, H.
name: Coderre, D.
name: Czerwiński, E.
name: Demmich, K.
name: Doroshkevich, E.
name: Engels, R.
name: Erven, W.
name: Eyrich, W.
name: Fedorets, P.
name: Föhl, K.
name: Fransson, K.
name: Goldenbaum, F.
name: Goslawski, P.
name: Goswami, A.
name: Grigoryev, K.
name: Gullström, C. -O.
name: Hauenstein, F.
name: Heijkenskjöld, L.
name: Hejny, V.
name: Hinterberger, F.
name: Hodana, M.
name: Höistad, B.
name: Jany, A.
name: Jany, B. R.
name: Jarczyk, L.
name: Johansson, T.
name: Kamys, B.
name: Kemmerling, G.
name: Khan, F. A.
name: Khoukaz, A.
name: Kistryn, S.
name: Klaja, J.
name: Kleines, H.
name: Kłos, B.
name: Krapp, M.
name: Krzemień, W.
name: Kulessa, P.
name: Kupść, A.
name: Kuzmin, A.
name: Lalwani, K.
name: Lersch, D.
name: Li, L.
name: Lorentz, B.
name: Magiera, A.
name: Maier, R.
name: Marciniewski, P.
name: Mariański, B.
name: Meißner, U. -G.
name: Mikirtychiants, M.
name: Morsch, H. -P.
name: Moskal, P.
name: Nandi, B. K.
name: Ohm, H.
name: Ozerianska, I.
name: del Rio, E. Perez
name: Piskunov, N.
name: Pluciński, P.
name: Podkopał, P.
name: Prasuhn, D.
name: Pricking, A.
name: Pszczel, D.
name: Pysz, K.
name: Pyszniak, A.
name: Redmer, C. F.
name: Ritman, J.
name: Roy, A.
name: Rudy, Z.
name: Sawant, S.
name: Schadmand, S.
name: Schmidt, A.
name: Sefzick, T.
name: Serdyuk, V.
name: Shah, N.
name: Shwartz, B.
name: Siemaszko, M.
name: Siudak, R.
name: Skorodko, T.
name: Skurzok, M.
name: Smyrski, J.
name: Sopov, V.
name: Stassen, R.
name: Stepaniak, J.
name: Stephan, E.
name: Sterzenbach, G.
name: Stockhorst, H.
name: Ströher, H.
name: Szczurek, A.
name: Tolba, T.
name: Trzciński, A.
name: Varma, R.
name: Wagner, G. J.
name: Wȩglorz, W.
name: Wirzba, A.
name: Wolke, M.
name: Wrońska, A.
name: Wüstner, P.
name: Wurm, P.
name: Yamamoto, A.
name: Zabierowski, J.
name: Zieliński, M. J.
name: Zipper, W.
name: Złomańczuk, J.
name: Żuprański, P.
name: Żurek, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The presently world largest data sample of pi0 --> gamma e+e- decays containing nearly 5E5 events was collected using the WASA detector at COSY. A search for a dark photon U produced in the pi0 --> gamma U --> gamma e+e- decay from the pp-->ppπ^0 reaction was carried out. An upper limit on the square of the U-gamma mixing strength parameter epsilon^2 of 5e-6 at 90% CL was obtained for the mass range 20 MeV
description: 16 pages, 8 figures; improved analysis extending the exclusion region to 20 MeV
Journal of Computational Geometry, Vol. 12 No. 1 (2021)
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2021

description: Local routing in WSPD-based spanners...1–34 A short proof of the toughness of Delaunay triangulations...35–39 Approximate range counting revisited...40–69 Walking the dog fast in practice: Algorithm engineering of the Fréchet distance...70–108 Planar bichromatic bottleneck spanning trees...109–127
Ratchet effect driven by Coulomb friction: the asymmetric Rayleigh piston
Creators: name: Sarracino, A.
name: Gnoli, A.
name: Puglisi, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The effect of Coulomb friction is studied in the framework of collisional ratchets. It turns out that the average drift of these devices can be expressed as the combination of a term related to the lack of equipartition between the probe and the surrounding bath, and a term featuring the average frictional force. We illustrate this general result in the asymmetric Rayleigh piston, showing how Coulomb friction can induce a ratchet effect in a Brownian particle in contact with an equilibrium bath. An explicit analytical expression for the average velocity of the piston is obtained in the rare collision limit. Numerical simulations support the analytical findings.
description: 5 pages, 2 figures
Discrete integrals based on comonotonic modularity
Creators: name: Couceiro, Miguel
name: Marichal, Jean-Luc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 26B35, 39B22, 39B72

description: It is known that several discrete integrals, including the Choquet and Sugeno integrals as well as some of their generalizations, are comonotonically modular functions. Based on a recent description of the class of comonotonically modular functions, we axiomatically identify more general families of discrete integrals that are comonotonically modular, including signed Choquet integrals and symmetric signed Choquet integrals as well as natural extensions of Sugeno integrals.
title: How Far Do Canadians Need to Travel to Access Cash?
Creators: name: Chen, Heng
name: O'Habib, Daneal
name: Xiao, Hong Yu
Publisher: name: Bank of Canada
Year: 2023

description: This paper develops a travel-based metric to measure Canadians’ access to cash from automated banking machines (ABMs) and financial institution branches. Our findings indicate that the average distance Canadians need to travel to reach the nearest ABM is 2.0 km, while the average distance to the nearest branch is 4.5 km. Moreover, more than 90% of Canadians live within 5 km of an ABM, and 84% live within 5 km of a branch. The total number of ABMs in Canada increased by 3.7% between 2019 and 2022, and our results show that, overall, access to cash remained stable in that period. However, the total number of branches decreased by 5.2%. The decline in branch coverage is concentrated in rural areas at 7.2%. This may increase the challenge of accessing cash in these regions. Rural Canadians already have less access to cash: they need to drive an average distance of 4.0 km to the nearest ABM and 9.6 km to the nearest branch, each distance twice the national average.
description: Dans cette étude, nous élaborons une mesure fondée sur les déplacements afin d’évaluer l’accessibilité de l’argent comptant par l’accès de la population canadienne à des guichets automatiques bancaires (GAB) et à des succursales d’institutions financières. Nos résultats indiquent que la distance moyenne parcourue par les Canadiens pour atteindre le guichet le plus près est de 2 km; pour atteindre la succursale la plus près, elle est de 4,5 km. Par ailleurs, plus de 90 % de la population canadienne réside à moins de 5 km d’un guichet automatique et 84 %, à moins de 5 km d’une succursale. Selon nos résultats, l’accès à l’argent comptant est resté stable entre 2019 et 2022 dans son ensemble. Le nombre de GAB au Canada s’est accru de 3,7 % durant cette période. Cependant, le nombre de succursales a baissé de 5,2 %. Ce recul est plus marqué en zone rurale où on observe une diminution de 7,2 %. Cela pourrait nuire à l’accessibilité de l’argent comptant dans ces régions, compte tenu du fait qu’elle y est déjà plus limitée : en moyenne, il faut franchir 4 km pour accéder au guichet le plus près de son domicile et parcourir 9,6 km pour se rendre à la succursale la plus près. Ces distances sont deux fois plus grandes que la moyenne nationale.
title: Journal of Computational Geometry, Vol. 11 No. 2: Special Issue of Selected Papers from SoCG 2019
title: Special Issue of Selected Papers from SoCG 2019
titleType: AlternativeTitle
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2020

description: Special Issue of Selected Papers from the 35th International Symposium on Computational Geometry (SoCG 2019)
description: Exact computation of the matching distance on 2-parameter persistence modules...4–25 Searching for the closest-pair in a query translate...26–61 The one-way communication complexity of dynamic time warping distance...62–93 Polyline simplification has cubic complexity...94–130 An experimental study of forbidden patterns in geometric permutations by combinatorial lifting...131–161 Topological data analysis in information space...162–182 A weighted approach to the maximum cardinality bipartite matching problem with applications in geometric settings...183–204 Convex polygons in cartesian products...205–233 Preconditioning for the Geometric Transportation Problem...234–259
Reactor Antineutrino Anomaly with known θ_{13}
Creators: name: Zhang, C.
name: Qian, X.
name: Vogel, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We revisit the reactor antineutrino anomaly using the recent reactor flux independent determination of sizable theta?13 by considering the full set of the absolute reactor electron antineutrino flux measurements. When normalized to the predicted flux of Mueller et al. [1], the new world average, after including results from Palo Verde, Chooz, and Double Chooz, is 0.959 +- 0.009 (experiment uncertainty) +- 0.027 (flux systematics). Including the data with kilometer baseline, the new world average is only about 1.4 sigma lower than the unity, weakening the significance of the reactor antineutrino anomaly. The upcoming results from Daya Bay, RENO, and the Double Chooz will provide further information about this issue.
Journal of Computational Geometry, Vol. 11 No. 1 (2020)
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2020

description: On optimal polyline simplification using the Hausdorff and Fréchet distance...1–25 Stable-matching Voronoi diagrams: Combinatorial complexity and algorithms...26–59 New lower bounds for the number of pseudoline arrangements...60–92 Rigid foldability is NP-hard...93–124 Determining hyperbolicity of compact orientable 3-manifolds with torus boundary...125–136 On the planar edge-length ratio of planar graphs...137–155 Algorithms for the discrete Fréchet distance under translation...156–175 Spectral sparsification of simplicial complexes for clustering and label propagation...176–211 Expected complexity of routing in $\Theta_6$ and half-$\Theta_6$ graphs...212–234 A divide-and-conquer algorithm for two-point L1 shortest path queries in polygonal domains...235–282 An improved cost function for hierarchical cluster trees...283–331 Four pages are indeed necessary for planar graphs...332–353 Aligned plane drawings of the generalized Delaunay-graphs for pseudo-disks...354–370 NP-completeness of slope-constrained drawing of complete graphs...371–396 Face flips in origami tessellations...397–417 Faster algorithms for some optimization problems on collinear points...418–432 Drawing graphs on few lines and few planes...433–475 4-Connected triangulations on few lines...476–492 On the average complexity of the $k$-level...493–506 A simple randomized $O(n \log n)$–time closest-pair algorithm in doubling metrics...507–524 Time-space trade-offs for computing Euclidean minimum spanning trees...525–547 On the classification of motions of paradoxically movable graphs...548–575 Halving balls by a hyperplane in deterministic linear time...576–614 An explicit PL-embedding of the square flat torus into $\mathbb{E}^3$...615–628 Approximate greedy clustering and distance selection for graph metrics...629–652 Corrigendum to: Approximating minimum-area rectangular and convex containers for packing convex polygons...653–655
Locking-Free Mixed Finite Element Methods and Their Spurious Hourglassing Patterns
Creators: name: Hille, Moritz
name: Pfefferkorn, Robin
name: Betsch, Peter
Publisher: name: Springer International Publishing
Year: 2022
Subjects: mixed finite elements
enhanced assumed strain
hyperelasticity
elasto-plasticity
robustness
numerical instabilities

description: We present the five field mixed finite element formulation introduced by Armero and extend it to 3D problems. It combines the nonlinear mixed pressure element with an enhanced assumed strain (EAS) method based on the transposed Wilson modes. The well-known mixed pressure element arises from a Hu-Washizu-like variational principle, where dilatation and pressure are independent variables. This functional is further modified using the EAS framework to get the mixed formulation presented in this work. The element is compared to several mixed pressure and EAS element formulations showing its great performance in alleviating volumetric and shear locking in large deformation problems. The main focus of the present work is spurious hourglassing of mixed finite elements that arise in hyperelastic and elasto-plastic simulations.
The syncytial Drosophila embryo as a mechanically excitable medium
Creators: name: Idema, Timon
name: Dubuis, Julien O.
name: Kang, Louis
name: Manning, M. Lisa
name: Nelson, Philip C.
name: Lubensky, Tom C.
name: Liu, Andrea J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Mitosis in the early syncytial Drosophila embryo is highly correlated in space and time, as manifested in mitotic wavefronts that propagate across the embryo. In this paper we investigate the idea that the embryo can be considered a mechanically-excitable medium, and that mitotic wavefronts can be understood as nonlinear wavefronts that propagate through this medium. We study the wavefronts via both image analysis of confocal microscopy videos and theoretical models. We find that the mitotic waves travel across the embryo at a well-defined speed that decreases with replication cycle. We find two markers of the wavefront in each cycle, corresponding to the onsets of metaphase and anaphase. Each of these onsets is followed by displacements of the nuclei that obey the same wavefront pattern. To understand the mitotic wavefronts theoretically we analyze wavefront propagation in excitable media. We study two classes of models, one with biochemical signaling and one with mechanical signaling. We find that the dependence of wavefront speed on cycle number is most naturally explained by mechanical signaling, and that the entire process suggests a scenario in which biochemical and mechanical signaling are coupled.
Longitudinal Analysis of Android Ad Library Permissions
Creators: name: Book, Theodore
name: Pridgen, Adam
name: Wallach, Dan S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This paper investigates changes over time in the behavior of Android ad libraries. Taking a sample of 100,000 apps, we extract and classify the ad libraries. By considering the release dates of the applications that use a specific ad library version, we estimate the release date for the library, and thus build a chronological map of the permissions used by various ad libraries over time. We find that the use of most permissions has increased over the last several years, and that more libraries are able to use permissions that pose particular risks to user privacy and security.
description: Most 2013
title: Journal of Computational Geometry, Vol. 10 No. 2 (2019): Special Issue of Selected Papers from SoCG 2018
title: Special Issue of Selected Papers from SoCG 2018
titleType: AlternativeTitle
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2019

description: A special issue containing selected papers from the 34rh International Symposium on Computational Geometry (SoCG 2018).
description: Approximate shortest paths and distance oracles in weighted unit-disk graphs...3–20 Orthogonal Terrain Guarding is NP-complete...21–44 Minimizing crossings in constrained two-sided circular graph layouts...45–69 On the treewidth of triangulated 3-manifolds...70–98 Subquadratic encodings for point configurations...99–126 The density of expected persistence diagrams and its kernel based estimation...127–153
Measurement of the D*(2010)+ natural line width and the D*(2010)+ - D0 mass difference
Creators: name: The BaBar Collaboration
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We measure the mass difference, Δm_0, between the D*(2010)+ and the D0 and the natural line width, Γ, of the transition D*(2010)+ -> D0 pi+. The data were recorded with the BABAR detector at center-of-mass energies at and near the Upsilon(4S) resonance, and correspond to an integrated luminosity of approximately 477 1/fb. The D0 is reconstructed in the decay modes D0 -> K- pi+ and D0 -> K- pi+ pi- pi+. For the decay mode D0 -> K- pi+ we obtain Gamma = (83.4 +- 1.7 +- 1.5) keV and Δm_0 = (145 425.6 +- 0.6 +- 1.8) keV, where the quoted errors are statistical and systematic, respectively. For the D0 -> K- pi+ pi- pi+ mode we obtain Γ= (83.2 +- 1.5 +- 2.6) keV and Δm_0 = (145 426.6 +- 0.5 +- 2.0) keV. The combined measurements yield Γ= (83.3 +- 1.2 +- 1.4) keV and Δm_0 = (145 425.9 +- 0.4 +- 1.7) keV; the width is a factor of approximately 12 times more precise than the previous value, while the mass difference is a factor of approximately 6 times more precise.
description: 22 pages, 21 figures, accepted by Phys. Rev. D
Journal of Computational Geometry, Vol. 10 No. 1 (2019)
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2019

description: An abstract approach to polychromatic coloring: shallow hitting sets in ABA-free hypergraphs and pseudohalfplanes...1–26 All-Pairs Shortest Paths in Geometric Intersection Graphs...27–41 Minimax rates for estimating the dimension of a manifold...42–95 Measuring similarity between curves on 2-manifolds via homotopy area...96–126 On the structure of Schnyder woods on orientable surfaces...127–163 On the tree-width of knot diagrams...164–180 On the parameterized complexity of red-blue points separation...181–206 Covering many points with a small-area box...207–222 Simplices modelled on spaces of constant curvature...223–256 Realization and connectivity of the graphs of origami flat foldings...257–280 Separating overlapped intervals on a line...281–321 Median shapes...322–388 Approximate shortest distances among smooth obstacles in 3D...389–422 Computing representative networks for braided rivers...423–443 Lombardi drawings of knots and links...444–476 The relationship between the intrinsic Čech and persistence distortion distances for metric graphs...477–499 Interesting paths in the mapper complex...500–531 The geometric dilation of three points...532–549
Measurement of the D*(2010)+ meson width and the D*(2010)+ - D0 mass difference
Creators: name: The BaBar Collaboration
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We measure the mass difference, Δm_0, between the D*(2010)+ and the D0 and the natural line width, Γ, of the transition D*(2010)+ -> D0 pi+. The data were recorded with the BABAR detector at center-of-mass energies at and near the Upsilon(4S) resonance, and correspond to an integrated luminosity of approximately 477 1/fb. The D0 is reconstructed in the decay modes D0 -> K- pi+ and D0 -> K- pi+ pi- pi+. For the decay mode D0 -> K- pi+ we obtain Gamma = (83.4 +- 1.7 +- 1.5) keV and Δm_0 = (145 425.6 +- 0.6 +- 1.8) keV, where the quoted errors are statistical and systematic, respectively. For the D0 -> K- pi+ pi- pi+ mode we obtain Γ= (83.2 +- 1.5 +- 2.6) keV and Δm_0 = (145 426.6 +- 0.5 +- 2.0) keV. The combined measurements yield Γ= (83.3 +- 1.2 +- 1.4) keV and Δm_0 = (145 425.9 +- 0.4 +- 1.7) keV; the width is a factor of approximately 12 times more precise than the previous value, while the mass difference is a factor of approximately 6 times more precise.
description: 7 pages, 2 figures, accepted by Phys. Rev. Lett
Washington trip
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Watergate Affair (1972-1974)
Politics and government
Political corruption

description: Late 1973/early 1974: Nick Egleson introduces a tape of Paul Gorman reporting on Nixon and impeachment from Washington DC. Interviews with politicians seem to have been recorded secretly. The consensus is that Gerald Ford will soon be confirmed as vice-president and that Washington has a responsibility to conduct a thorough investigation of Nixon and Watergate. Following the recording, Egleson talks to Gorman by phone
A Tale of Two Rivers: Zoning Policy Conflict and the Production of Public Space on the Chicago River
Creators: name: Kron, Isadora Brito
Publisher: name: University of Chicago
Year: 2023

description: In his tenure as Mayor of Chicago from 2011 to 2019, Rahm Emanuel prioritized development that would draw corporate investment into Chicago and elevate the city on the world’s stage. In order to do this, he prioritized zoning policy that would allow for public space development on the Chicago River as well as the redevelopment of the North Branch of the river from an industrial zone into an innovation zone. These policy changes succeeded in redeveloping the character and ecology of the North Branch, but did so through the intensification of polluting industrial activity on the South Branch of the river. This thesis examines the interactions among three pieces of zoning policy, the Chicago River Design Guidelines, the North Branch Framework Plan, and a draft Little Village Framework plan, analyzing the policy mechanisms with which the City has attempted to create public space on the river while encouraging the redevelopment of the North Branch and the continuation of industrial activity on the South Branch. I show that this diverging development scheme has created geographically-unique barriers to using the river as a public space in each area, and I ultimately argue that it has contributed to increased spatial and environmental inequality within the city. Finally, I argue that the City should halt the practice of selling public land to private developers and reform environmental, labor, and land-use policies to change the nature and geography of industrial activity in Chicago, two changes that would promote public access to the Chicago River while balancing the economic and environmental needs of the city.
title: Journal of Computational Geometry, Vol. 9 No. 2 (2018): Special Issue of Selected Papers from SoCG 2017
title: Special Issue of Selected Papers from SoCG 2017
titleType: AlternativeTitle
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2018

description: A special issue containing selected papers from the 33rd International Symposium on Computational Geometry (SoCG 2017).
description: Applications of Chebyshev polynomials to low-dimensional computational geometry...3–20 Declutter and resample: Towards parameter free denoising...21–46 Fine-grained complexity of coloring unit disks and balls...47–80 Dynamic Orthogonal Range Searching on the RAM, Revisited...45–66 Topological data analysis with Bregman divergences...67–86
X-ray Scaling Relation in Early-Type Galaxies: Dark Matter as a Primary Factor in Retaining Hot Gas
Creators: name: Kim, Dong-Woo
name: Fabbiano, Giuseppina
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have revisited the X-ray scaling relations of early type galaxies (ETG) by investigating, for the first time, the LX,Gas - MTotal relation in a sample of 14 ETGs. In contrast to the large scatter (by a factor of 102-103) in the LX,Total - LB relation, we found a tight correlation between these physically motivated quantities with a rms deviation of a factor of 3 in LX,Gas = 1038 - 1043 erg s-1 or MTotal = a few x 1010 - a few x 1012 Mo. More striking, this relation becomes even tighter with a rms deviation of a factor of 1.3 among the gas-rich galaxies (with LX,Gas > 1040 erg s-1). In a simple power-law form, the new relation is (LX,Gas / 1040 erg s-1) = (MTotal / 3.2 x 1011 Mo)3. This relation is also consistent with the steep relation between the gas luminosity and temperature, LX,Gas ~ TGas4.5, identified by Boroson, Kim & Fabbiano (2011), if the gas is virialized. Our results indicate that the total mass of an ETG is the primary factor in regulating the amount of hot gas. Among the gas-poor galaxies (with LX,Gas < a few x 1039 erg s-1), the scatter in the LX,Gas - MTotal (and LX,Gas - TGas) relation increases, suggesting that secondary factors (e.g., rotation, flattening, star formation history, cold gas etc.) may become important.
description: 10 pages, 2 figures, Accepted for publication in ApJ, minor changes from v1
Journal of Computational Geometry, Vol. 9 No. 1 (2018)
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2018

description: Computing maxmin edge length triangulations...1–26 Scalable exact visualization of isocontours in road networks via minimum-link paths...27–73 Flat foldings of plane graphs with prescribed angles and edge lengths...74–93 Drawing planar graphs with many collinear vertices...94–130 On the geodesic centers of polygonal domains...131–190 Improved time-space trade-offs for computing Voronoi diagrams...191–212 Topological drawings of complete bipartite graphs...213–246 Array-based compact data structures for triangulations: Practical solutions with theoretical guarantees...247–289 Drawing planar graphs with prescribed face areas...290–311 Placing your coins on a shelf...312–327 Planar and poly-arc Lombardi drawings...328–355 Thickness and antithickness of graphs...356–386 A stability theorem on cube tessellations...387–390 Canonical ordering for graphs on the cylinder, with applications to periodic straight-line drawings on the flat cyclinder and torus...391–429 Routing on the visibility graph...430–453
Individual Differences in Motivated Response and Visual Perception
Creators: name: Russell, Emily
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: bias
subject: perception
subject: motivation
subject: cognition
subject: neuroscience

description: Leong and colleagues (2019) found two dissociable biases in motivated perception: a bias in sensory perception and a bias in a person’s reports of what they perceive. Prior research on motivated perception have noted that individuals differ in how susceptible they are to motivated perception (Leong et al., 2019), but they have not examined why these differences exist. The goal of the current study was to assess the relationship between personality traits (i.e. anxiety, depression, impulsiveness and paranoia) and the level of bias towards what a participant is motivated to see. A merged face-scene image task was presented to participants, with a forced-choice between the image as more face-dominant or more scene-dominant. Participants were motivated towards face-dominant images for 4 of 12 blocks, scene-dominant for 12 blocks, and neutral or no motivation for 4 blocks. Survey measures were collected for each participant personality trait. Linear regressions, Drift Diffusion Modeling (DDM), t tests, and psychometric modeling were used to analyze data. Results showed that participants are more likely to see what they are motivated to see, but individual difference findings were not significant. This is likely due to the small sample size, and future research should explore this topic further.
Using basis sets of scar functions
Creators: name: Revuelta, F.
name: Benito, R. M.
name: Borondo, F.
name: Vergini, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a method to efficiently compute the eigenfunctions of classically chaotic systems. The key point is the definition of a modified Gram-Schmidt procedure which selects the most suitable elements from a basis set of scar functions localized along the shortest periodic orbits of the system. In this way, one benefits from the semiclassical dynamical properties of such functions. The performance of the method is assessed by presenting an application to a quartic two dimensional oscillator whose classical dynamics are highly chaotic. We have been able to compute the eigenfunctions of the system using a small basis set. An estimate of the basis size is obtained from the mean participation ratio. A thorough analysis of the results using different indicators, such as eigenstate reconstruction in the local representation, scar intensities, participation ratios, and error bounds, is also presented.
description: 26 pages, 22 figures
Filtering Random Matrices: The Effect of Incomplete Channel Control in Multiple Scattering
Creators: name: Goetschy, A.
name: Stone, A. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present an analytic random matrix theory for the effect of incomplete channel control on the measured statistical properties of the scattering matrix of a disordered multiple-scattering medium. When the fraction of the controlled input channels, m1, and output channels, m2, is decreased from unity, the density of the transmission eigenvalues is shown to evolve from the bimodal distribution describing coherent diffusion, to the distribution characteristic of uncorrelated Gaussian random matrices, with a rapid loss of access to the open eigenchannels. The loss of correlation is also reflected in an increase in the information capacity per channel of the medium. Our results have strong implications for optical and microwave experiments on diffusive scattering media.
description: 5 pages, 2 figures, + appendix
Policy Evaluation in Statistical Reinforcement Learning
Creators: name: Ramprasad, Pratik
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Statistical theory
Reinforcement learning

description: While Reinforcement Learning (RL) has achieved phenomenal success in diverse fields in recent years, the statistical properties of the underlying algorithms are still not fully understood. One key aspect in this regard is the evaluation of the value associated with the RL agent. In this dissertation, we propose two statistically sound methods for policy evaluation and inference, and study their theoretical properties within the RL setting.
 In the first work, we propose an online bootstrap method for statistical inference in policy evaluation. The bootstrap is a flexible and efficient approach for inference in online learning, but its efficacy in the RL setting has yet to be explored. Existing methods for online inference are restricted to settings involving independently sampled observations. In contrast, our method is shown to be distributionally consistent for statistical inference in policy evaluation under Markovian noise, which is a standard assumption in the RL setting. To demonstrate the effectiveness of our method in practical applications, we include several numerical simulations involving the temporal difference (TD) learning and Gradient TD (GTD) learning algorithms across a range of real RL environments.
 In the second work, we propose a tensor Markov Decision Process framework for modeling the evolution of a sequential decision-making process when the state-action features are tensors. Under this framework, we develop a low-rank tensor estimation method for off-policy evaluation in batch RL. The proposed estimator approximates the Q-function using a tensor parameter embedded with low-rank structure. To overcome the challenge of nonconvexity, we introduce an efficient block coordinate descent approach with closed-form solutions to the alternating updates. Under standard assumptions from the tensor and RL literature, we establish an upper bound on the statistical error which guarantees a sub-linear rate of computational error. We provide numerical simulations to demonstrate that our method significantly outperforms standard batch off-policy evaluation algorithms when the true parameter has a low-rank tensor structure.
Observability of`Cascade Mixing' in B0 --> J/psi K0
Creators: name: Stodolsky, Leo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In high statistics observations of B^o --> J/ψK0, originating from the process Upsilon(4S)--> B0 B0, it should be possible to observe `cascade mixing', where one mixing particle, the B0, turns into another, the K0. This is possible despite the difficulty that the length of the beam crossing region makes a precise definition of the primary vertex impossible. This difficulty is circumvented by using an `away side' tag to specify the initial time. We review the formalism for describing such processes, and first apply it to simple B0 mixing, noting it gives a transparent description for CP and T asymmetries. In particular we show that three different asymmetries of the CP and T type, with neglect of direct CP violation, are given by the same expression. For "cascade mixing" we present predictions for processes of the type B_i --> K_j via J/psi, where in the limit of no direct CP violation each state i or j is determined by a simple tag. There are 16 such simple measureable processes, involving 10 functions of the two time intervals involved. The coefficients of the functions are different for each of the processes and are given in terms of the mass splitting and the CP, T violating parameter of the B0 mass matrix m_2. The results presented here are just consquences of the quantum mechanics of particle mixing and do not involve any particular model of CP violation.
description: 21 pages, 3 tables, no figures, many small corrections and improvements, notation for m_k made consistent. One substantive change: sign of Eq 51, corresponding element in Table 3 changed
Journal of Computational Geometry, Vol. 8 No. 1 (2017)
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2017

description: Approximating minimum-area rectangular and convex containers for packing convex polygons...1–10 Towards plane spanners of degree 3...11–31 On interference among moving sensors and related problems...32–46 Counting and enumerating crossing-free geometric graphs...47–77 The projection median as a weighted average...78–104 Time-space trade-offs for triangulating a simple polygon...105–124 Competitive local routing with constraints...125–152 A new drawing for simple Venn diagrams based on algebraic construction...153–173 Classifying unavoidable Tverberg partitions...174–205 How many three-dimensional Hilbert curves are there?...206–281 Qualitative symbolic perturbation: two applications of a new geometry-based perturbation framework...282–315 Maximizing the sum of radii of disjoint balls or disks...316–339 Computing nonsimple polygons of minimum perimeter...340–365 Central trajectories...366–386
title: Extension of a Quaternary-Active Shear Zone across the Reelfoot Fault Stepover Arm
title: Evidence from P- and SH-wave Seismic Reflection Imaging
titleType: Subtitle
Creators: name: Rosandich, Brooks
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Many seismic hazard source parameters such as slip rate, total displacement, strain accommodation, geographic fault location, etc. are poorly constrained in the New Madrid seismic zone (NMSZ). This is in large part due to the masking effect of the thick Mississippi embayment sediment package on seismogenic structures and features. Consequently, much of the subsurface geologic characterization needed for understanding seismic hazard sources requires geophysical imaging. Recent seismic reflection surveys 12 km NE of the Reelfoot Fault stepover arm of the NMSZ have suggested a northeast-oriented transpressional fault zone extending across the Reelfoot Fault stepover arm where its dextral displacement at seismogenic depth is unbalanced with the surface expression, the Reelfoot Scarp. New high-resolution seismic reflection surveys were acquired across the southwestern back projection of the hypothesized structure at a potential piercing point with the Reelfoot Fault near Proctor City, TN. The resultant images show steeply dipping northeast striking faults with uplifted and arched post-Paleozoic reflectors that extend into the Quaternary sediments, consistent with the findings of the previous surveys. The new imaged faults form a ~500-meter-wide positive flower structure, with vertical displacements of 16 m and 50 m at the top of the Eocene and top of the Paleozoic reflectors, respectively. Results corroborate the Axial Fault extending to the northeast, and provide geological evidence for Reelfoot Fault segmentation. Furthermore, the near-surface SH-wave seismic profiles show the through-going shear deformation has continued into the Quaternary, thus indicating seismogenic strain has not been completely transferred to the Reelfoot Fault, providing additional evidence for accommodating the strain imbalance.
description: Copyright © Brooks Rosandich 2019
description: Funding Information:
Ferm Fund- Summer 2018
Brown-McFarland Travel Fund- Spring 2019
KGS- Summer 2018
Department of Energy and the Kentucky Consortium for Energy and Environment (award number DE-EM0004146)- Summer 2018
Lattice Study of Radiative $J/ψ$ Decay to a Tensor Glueball
Creators: name: Yang, Yi-Bo
name: Gui, Long-Cheng
name: Chen, Ying
name: Liu, Chuan
name: Liu, Yu-Bin
name: Ma, Jian-Ping
name: Zhang, Jian-Bo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The radiative decay of $J/ψ$ into a pure gauge tensor glueball is studied in the quenched lattice QCD formalism. With two anisotropic lattices, the mutlipole amplitudes E_1(0), M_2(0) and E_3(0) are obtained to be 0.114(12)(6)GeV, -0.011(5)(1)GeV, and 0.023(8)(1)GeV, respectively. The first error comes from the statistics, the Q^2 interpolation, and the continuum extrapolation, while the second is due to the uncertainty of the scale parameter r_0^{-1}=410(20) MeV. Thus the partial decay width $Γ(J/ψ\rightarrow γG_{2^{++}})$ is estimated to be 1.01(22)(10) keV which corresponds to a large branch ratio 1.1(2)(1)x10^{-2}. The phenomenological implication of this result is also discussed.
description: 5 pages, 3 figures. Title modified, references added, and typos corrected. The systematic errors owing to the uncertainty of the scale parameter r_0 is considered. Published version in PRL
title: Journal of Computational Geometry, Vol. 8 No. 2 (2017): Special Issue of Selected Papers from SoCG 2016
title: Special Issue of Selected Papers from SoCG 2016
titleType: AlternativeTitle
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2017

description: A special issue containing selected papers from the 32nd International Symposium on Computational Geometry (SoCG 2016).
description: Guest editors' foreword...1 Degree four plane spanners: Simpler and better...3–31 Hyperplane separability and convexity of probabilistic point sets...32–57 Minimum cycle and homology bases of surface-embedded graphs...58–79 On the complexity of minimum-link path problems...80–108 The planar tree packing theorem...109–177
The NGC 1614 Interacting Galaxy: Molecular Gas Feeding a "Ring of Fire"
Creators: name: König, S.
name: Aalto, S.
name: Muller, S.
name: Beswick, R. J.
name: Gallagher, J. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Minor mergers frequently occur between giant and gas-rich low mass galaxies and can provide significant amounts of interstellar matter to refuel star formation and power AGN in the giant systems. Major starbursts and/or AGN result when fresh gas is transported and compressed in the central regions of the giant galaxy. This is the situation in NGC1614, whose molecular medium we explore at half arcsecond angular resolution through our observations of 12CO(2-1) emission using the SMA. We compare our maps with optical and Pa alpha, HST and high angular resolution radio continuum images to study the relationships between dense molecular gas and the starburst region. The most intense CO emission occurs in a partial ring with ~230pc radius around the center, with an extension to the north-west into the dust lane that contains diffuse molecular gas. We resolve 10 GMAs in the ring which has an integrated molecular mass of ~8x10^8M_sun. Our observations filter out a large part of the CO(1-0) emission mapped at shorter spacings, indicating that most of the molecular gas is diffuse and that GMAs only exist near and within the circumnuclear ring. The molecular ring is uneven with most of the mass on the western side, which also contains GMAs extending into a pronounced tidal dust lane. The spatial and kinematic patterns suggest that the northwest extension of the ring is a cosmic umbilical cord that is feeding molecular gas associated with the dust lane and tidal debris into the nuclear ring. The astrophysical process for producing a ring structure is not fully understood, but the presence of numerous GMAs suggests an orbit crowding or resonance phenomenon. There is some evidence that star formation is progressing radially outwards within the ring, indicating that a self-triggering mechanism may also affect these processes.
description: accepted for publication in A&A, 12 pages, 6 figures; reveised version after language editing and reduction of image size of Fig. 1
Mathematical modeling of migration in cancer and bacteria
Creators: name: Saha, Soutick
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Biological physics

description: Migration is a ubiquitous phenomenon in biology and is relevant to all scales ranging from bacteria to human beings. It is relevant to fundamental biological processes like bacterial chemotaxis, development, disease progression, etc. So, understanding migration is pivotal to addressing fundamental questions in biology. We address three broad questions relevant to cell migration using models from physics: (i) What are the critical features of cancer cell migration? (ii) Is it possible to explain complex cell migration data using minimal bio- chemical networks? And (iii) how does cell-to-cell communication affect its migration at the population level? To address these questions we performed (i) mathematical analysis using the Cellular Potts model, simulations using the Biased Persistent random walk model, and steady-state analysis of cell response to graded signals to explain cancer cell migration in response to single and multiple chemical and mechanical signals, (ii) rigorous network anal- ysis of ∼ 500,000 minimal networks having features of fundamental biochemical processes like regulation, conversion or molecular binding to understand the origin of antagonism in multiple cue cancer cell migration experiments and (iii) the steady-state analysis of Keller- Segel equations mimicking collective cell migration to understand the role of cell to cell communication on chemotaxis of a bacterial population. From our analysis, we found that (i) persistence and bias in cancer cell migration are decoupled from each other owing to a lack of memory about past movements and for any general cell migration they are inherently constrained to take only a fixed set of values. (ii) Bias in cancer cell migration in response to a combination of chemoattractant gradients can be less than the response to individual gradients (antagonism in bias) while the speed remains unaltered. This antagonism in bias and lack thereof in speed can be explained by several minimal networks having molecular regulation, conversion, or binding as its central feature and all these distinct mechanisms show convergence and saturation of an internal molecule common to both the chemoattrac- tants. (iii) By analyzing the role of cell-cell communication in bacterial chemotaxis using the Keller-Segel model we find that communication enhances chemotaxis only when it is adaptive to its external surroundings and cell-to-cell variability helps in increasing the chemotactic drift in the bacterial population.
Journal of Computational Geometry, Vol. 7 No. 1 (2016)
Creators: name: Journal Of Computational Geometry
Publisher: name: Journal of Computational Geometry
Year: 2016

description: Density of range capturing hypergraphs...1–21 Strict confluent drawing...22–46 On self-approaching and increasing-chord drawings of 3-connected planar graphs...47–69 2-manifold recognition is in logspace...70–85 Silhouette of a random polytope...86–99 Adjacency-preserving spatial treemaps...100–122 Finding shortest non-trivial cycles in directed graphs on surfaces...123–148 Polyhedral Gauss sums, and polytopes with symmetry...149–170 Rigid origami vertices: conditions and forcing sets...171–184 Recursively-regular subdivisions and applications...185–220 Weighted geometric set multi-cover via quasi-uniform sampling...221–236 An algorithm for the Euclidean cell decomposition of a non-compact strictly convex projective surface...237–255 The continuous 1.5D terrain guarding problem: Discretization, optimal solutions, and PTAS...256–284 Flat norm decomposition of integral currents...285–307 Consistent labeling of rotating maps...308–331 The worst visibility walk in a random Delaunay triangulation is $O(\sqrt{n})$...332–359 Near-linear time medial axis approximation of smooth curves in $\mathbb{R}^3$...360–429 Recognizing shrinkable complexes is NP-complete...430–443 On the stretch factor of convex polyhedra whose vertices are (almost) on a sphere...444–472 Two-point L1 shortest path queries in the plane...473–519 A plane 1.88-spanner for points in convex position...520–539 On isolating points using unit disks...540–557