cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neural Dynamical Systems: Balancing Structure and Flexibility in Physical Prediction
Creators: name: Mehta, Viraj
name: Char, Ian
name: Neiswanger, Willie
name: Chung, Youngseog
name: Nelson, Andrew Oakleigh
name: Boyer, Mark D
name: Kolemen, Egemen
name: Schneider, Jeff
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We introduce Neural Dynamical Systems (NDS), a method of learning dynamical models in various gray-box settings which incorporates prior knowledge in the form of systems of ordinary differential equations. NDS uses neural networks to estimate free parameters of the system, predicts residual terms, and numerically integrates over time to predict future states. A key insight is that many real dynamical systems of interest are hard to model because the dynamics may vary across rollouts. We mitigate this problem by taking a trajectory of prior states as the input to NDS and train it to dynamically estimate system parameters using the preceding trajectory. We find that NDS learns dynamics with higher accuracy and fewer samples than a variety of deep learning methods that do not incorporate the prior knowledge and methods from the system identification literature which do. We demonstrate these advantages first on synthetic dynamical systems and then on real data captured from deuterium shots from a nuclear fusion reactor. Finally, we demonstrate that these benefits can be utilized for control in small-scale experiments.
Role of structural holes in containing spreading processes
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016

description: © 2016 American Physical Society. Structural holes are channels or paths spanned by a group of indirectly connected nodes and their intermediary in a network. In this work we emphasize the interesting role of structural holes as brokers for information propagation. Based on the distribution of the structural hole numbers associated with each node, we propose a simple yet effective approach for choosing the most influential nodes to immunize in containing the spreading processes. Using a wide spectrum of large real-world networks, we demonstrate that the proposed approach outperforms conventional methods in a remarkable way. In particular, we find that the performance gains of our approach are particularly prominent for networks with high transitivity and assortativity, which verifies the vital role of structural holes in information diffusion on networked systems.
Anatomy of bubbling solutions
Creators: name: Skenderis, Kostas
name: Taylor, Marika
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a comprehensive analysis of holography for the bubbling solutions of Lin-Lunin-Maldacena. These solutions are uniquely determined by a coloring of a 2-plane, which was argued to correspond to the phase space of free fermions. We show that in general this phase space distribution does not determine fully the 1/2 BPS state of N=4 SYM that the gravitational solution is dual to, but it does determine it enough so that vevs of all single trace 1/2 BPS operators in that state are uniquely determined to leading order in the large N limit. These are precisely the vevs encoded in the asymptotics of the LLM solutions. We extract these vevs for operators up to dimension 4 using holographic renormalization and KK holography and show exact agreement with the field theory expressions.
description: 67 pages, 6 figures; v2: typos corrected, refs added; v3: expanded explanations, more typos corrected
A test of Radial Acceleration Relation for the {\it Giles et al Chandra} cluster sample
Creators: name: Pradyumna, S.
name: Desai, Shantanu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We carry out a test of the radial acceleration relation (RAR) for a sample of 10 dynamically relaxed and cool-core galaxy clusters imaged by the Chandra X-ray telescope, which was studied in Giles et al. For this sample, we observe that the best-fit RAR shows a very tight residual scatter equal to 0.09 dex. We obtain an acceleration scale of $1.59 \times 10^{-9} m/s^2$, which is about an order of magnitude higher than that obtained for galaxies. Furthermore, the best-fit RAR parameters differ from those estimated from some of the previously analyzed cluster samples, which indicates that the acceleration scale found from the RAR could be of an emergent nature, instead of a fundamental universal scale.
description: 6 pages, 2 figures. Accepted for publication in Phys. Dark Universe
Dependence, diversification and regionalism : the Association of Southeast Asian Nations
Creators: name: Crone, Donald K.
Publisher: name: University of British Columbia
Year: 2010

description: One of the most pressing problems of developing countries is their economic and political dependence on the major global powers, which is thought to impose severe constraints on the ability of LDCs to pursue autonomous development. This thesis explicates and examines one strategy to reduce dependence, as it is developed and pursued by the members of the Association of Southeast Asian Nations (Indonesia, Malaysia, the Philippines, Thailand and Singapore). The elements of this strategy are diversification of economic relations and restructuring of memberships in international organizations. Policies leading to diversification in the areas of international trade and foreign direct investment are described, and evaluated through statistical analysis of trade and investment flows for the period 1967 to 1978. The evolution of ASEAN is examined, particularly as it bears on economic issues. Patterns of memberships in global and regional international organizations and transnational associations are examined for evidence of a greater capacity for collective behavior on the part of the ASEAN members. The study concludes that there has been modest progress toward reducing the structural basis of dependence, although there are numerous limitations to diversification. The ASEAN members remain dependent, but less so. Their strategy may offer an alternative to other collective self-reliance strategies pursued by Third World nations.
Disappearance of a Stacking Fault in Hard-Sphere Crystals under Gravity
Creators: name: Mori, Atsushi
name: Suzuki, Yoshihisa
name: Matsuo, Shikegi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In the first part of this paper, a review is given on the mechanism for the disappearance of an intrinsic stacking fault in a hard-sphere (HS) crystal under gravity, which we recently discovered by Monte Carlo (MC) simulations [A. Mori et al., J. Chem. Phys., 124 (2006), 17450; Mol. Phys. 105 (2007), 1377]. We have observed, in the case of fcc (001) stacking, that the intrinsic stacking fault running along an oblique direction shrunk through the gliding of a Shockley partial dislocation at the lower end of the stacking fault. In order to address the shortcomings and approximations of previous simulations, such as the use of periodic boundary condition (PBC) and the fact that the fcc (001) stacking had been realized by the stress from the small PBC box, we present an elastic strain energy calculation for an infinite system and a MC simulation result for HSs in a pyramidal pit under gravity. In particular, the geometry of the latter has already been tested experimentally [S. Matsuo et al., Appl. Phys. Lett., 82 (2003), 4283]. The advantage of using a pyramidal pit as a template as well as the feasibility of the mechanism we describe is demonstrated.
description: 8 pages, 5 figures; Symposium of the 50th Anniversary of the Alder Transition; Progress of Theoretical Physics Supplement 178 (2009) 33-40
$α$-event Characterization and Rejection in Point-Contact HPGe Detectors
Creators: name: The MAJORANA Collaboration
name: Arnquist, I. J.
name: Avignone, F. T.
name: Barabash, A. S.
name: Barton, C. J.
name: Bertrand, F. E.
name: Blalock, E.
name: Bos, B.
name: Busch, M.
name: Buuck, M.
name: Caldwell, T. S.
name: Chan, Y-D.
name: Christofferson, C. D.
name: Chu, P. -H.
name: Clark, M. L.
name: Cuesta, C.
name: Detwiler, J. A.
name: Drobizhev, A.
name: Edwards, T. R.
name: Edwins, D. W.
name: Efremenko, Yu.
name: Elliott, S. R.
name: Gilliss, T.
name: Giovanetti, G. K.
name: Green, M. P.
name: Gruszko, J.
name: Guinn, I. S.
name: Guiseppe, V. E.
name: Haufe, C. R.
name: Hegedus, R. J.
name: Henning, R.
name: Aguilar, D. Hervas
name: Hoppe, E. W.
name: Hostiuc, A.
name: Kim, I.
name: Kouzes, R. T.
name: Lopez, A. M.
name: López-Castaño, J. M.
name: Martin, E. L.
name: Martin, R. D.
name: Massarczyk, R.
name: Meijer, S. J.
name: Mertens, S.
name: Myslik, J.
name: Oli, T. K.
name: Othman, G.
name: Pettus, W.
name: Poon, A. W. P.
name: Radford, D. C.
name: Rager, J.
name: Reine, A. L.
name: Rielage, K.
name: Ruof, N. W.
name: Saykı, B.
name: Schönert, S.
name: Stortini, M. J.
name: Tedeschi, D.
name: Varner, R. L.
name: Vasilyev, S.
name: Wilkerson, J. F.
name: Willers, M.
name: Wiseman, C.
name: Xu, W.
name: Yu, C. -H.
name: Zhu, B. X.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: P-type point contact (PPC) HPGe detectors are a leading technology for rare event searches due to their excellent energy resolution, low thresholds, and multi-site event rejection capabilities. We have characterized a PPC detector's response to $α$ particles incident on the sensitive passivated and p+ surfaces, a previously poorly-understood source of background. The detector studied is identical to those in the MAJORANA DEMONSTRATOR experiment, a search for neutrinoless double-beta decay ($0νββ$) in $^{76}$Ge. $α$ decays on most of the passivated surface exhibit significant energy loss due to charge trapping, with waveforms exhibiting a delayed charge recovery (DCR) signature caused by the slow collection of a fraction of the trapped charge. The DCR is found to be complementary to existing methods of $α$ identification, reliably identifying $α$ background events on the passivated surface of the detector. We demonstrate effective rejection of all surface $α$ events (to within statistical uncertainty) with a loss of only 0.2% of bulk events by combining the DCR discriminator with previously-used methods. The DCR discriminator has been used to reduce the background rate in the $0νββ$ region of interest window by an order of magnitude in the MAJORANA DEMONSTRATOR, and will be used in the upcoming LEGEND-200 experiment.
description: Accepted for publication in European Journal of Physics C
SwiftLane: Towards Fast and Efficient Lane Detection
Creators: name: Jayasinghe, Oshada
name: Anhettigama, Damith
name: Hemachandra, Sahan
name: Kariyawasam, Shenali
name: Rodrigo, Ranga
name: Jayasekara, Peshala
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recent work done on lane detection has been able to detect lanes accurately in complex scenarios, yet many fail to deliver real-time performance specifically with limited computational resources. In this work, we propose SwiftLane: a simple and light-weight, end-to-end deep learning based framework, coupled with the row-wise classification formulation for fast and efficient lane detection. This framework is supplemented with a false positive suppression algorithm and a curve fitting technique to further increase the accuracy. Our method achieves an inference speed of 411 frames per second, surpassing state-of-the-art in terms of speed while achieving comparable results in terms of accuracy on the popular CULane benchmark dataset. In addition, our proposed framework together with TensorRT optimization facilitates real-time lane detection on a Nvidia Jetson AGX Xavier as an embedded system while achieving a high inference speed of 56 frames per second.
description: Accepted to 20th IEEE International Conference on Machine Learning and Applications (ICMLA) 2021
No resonant tunneling in standard scalar quantum field theory
Creators: name: Copeland, Edmund J.
name: Padilla, Antonio
name: Saffin, Paul M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the nature of resonant tunneling in Quantum Field Theory. Following the pioneering work of Banks, Bender and Wu, we describe quantum field theory in terms of infinite dimensional quantum mechanics and utilize the ``Most probable escape path'' (MPEP) as the class of paths which dominate the path integral in the classically forbidden region. Considering a 1+1 dimensional field theory example we show that there are five conditions that any associated bound state in the classically allowed region must satisfy if resonant tunnelling is to occur, and we then proceed to show that it is impossible to satisfy all five conditions simultaneously.
description: Section added and both introduction and conclusions expanded in order to clarify a number of points. References added. Minor change to title
Les makerspaces au service de l'affranchissement numérique des Africain.e.s : Naviguer entre utopies et hétérotopies
Creators: name: Thomas Hervé, Mboa Nkoudou
Publisher: name: Zenodo
Year: 2024

description: Avec leur nombre sans cesse croissant en Afrique, on est à même de dire que les Africain.e.s ne sont pas restés insensibles aux promesses des Fablabs.  Dans cette communication, qui s’appuie sur une recherche ethnographique auprès d’une dizaine de Fablabs d’Afrique, sont présentées les stratégies de contournement, de détournement, voire de créolisation qui contribuent à l'affranchissement numérique des africain.e.s et font des Fablabs de véritables hétérotopies (Foucault 1966).
title: Comparing target tracking algorithms
Creators: name: Ransom, Michael
Publisher: name: University of Liverpool Repository
Year: 2024

description: This thesis concerns the comparison of target tracking algorithms. A surveillance scenario may include intermittently visible targets that may be detectable by multiple sensors. Additional detections may also originate from other objects of no interest and false alarms may also be present. Quantifying the degree to which a target is detectable and trackable is a challenge that requires a solution. Models can be used to characterise a surveillance scenario. These models can also be used to simulate data. The same models can then inform development of a target tracking algorithm. A target tracking algorithm is recursive. As such, it conducts a time-evolving statistical analysis. At each iteration, an algorithm compares a prediction calculated from a previous estimate and the target tracking models with sensor observations. This comparison is used to update the estimate. Multiple competing algorithms exist. A performance quantification method quantifies the differences between a surveillance scenario realisation and an estimate from a target tracking algorithm. Comparing such algorithms would make it possible to identify the best choice of target tracking algorithm solution for a specific scenario. Many such scenarios exist. This includes scenarios with a single active sensor as well as collocated active and passive sensors. This thesis places particular emphasis on a systematic analysis investigating such comparisons. Both baseline target tracking algorithm implementations and novel developments improving on this baseline are compared. These implementations are based on a choice of algorithm for state estimation. The Kalman filter (KF) and the particle filter (PF) are two such implementations that feature herein. State estimation forms the foundation of joint target-detection and tracking (JoTT) algorithms. Two examples include the integrated probabilistic data association filter (IPDAF) and the integrated expected likelihood particle filter (IELPF). The comparisons herein consider a range of scenarios varying in complexity. The effectiveness of using multiple sensors for a target tracking solution is also evaluated. The conclusion of this thesis is that the optimal choice between either a KF or a PF is dependent on the surveillance scenario. The KF algorithm is preferable in a simple scenario (i.e., targets with a high probability of detection in low clutter and a low tolerance on availability of computational resources). Using multiple sensors results in improvements on this baseline algorithm when using sophisticated PF algorithms. Differences in relative performance are especially evident in challenging scenarios featuring dense clutter.
The detector system of the Daya Bay reactor neutrino experiment
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: Neutrino oscillation
Neutrino mixing
Reactor
Daya Bay

description: © 2015 Elsevier B.V. All rights reserved. The Daya Bay experiment was the first to report simultaneous measurements of reactor antineutrinos at multiple baselines leading to the discovery of ν¯e oscillations over km-baselines. Subsequent data has provided the world's most precise measurement of sin22θ13 and the effective mass splitting Δmee2. The experiment is located in Daya Bay, China where the cluster of six nuclear reactors is among the world's most prolific sources of electron antineutrinos. Multiple antineutrino detectors are deployed in three underground water pools at different distances from the reactor cores to search for deviations in the antineutrino rate and energy spectrum due to neutrino mixing. Instrumented with photomultiplier tubes, the water pools serve as shielding against natural radioactivity from the surrounding rock and provide efficient muon tagging. Arrays of resistive plate chambers over the top of each pool provide additional muon detection. The antineutrino detectors were specifically designed for measurements of the antineutrino flux with minimal systematic uncertainty. Relative detector efficiencies between the near and far detectors are known to better than 0.2%. With the unblinding of the final two detectors' baselines and target masses, a complete description and comparison of the eight antineutrino detectors can now be presented. This paper describes the Daya Bay detector systems, consisting of eight antineutrino detectors in three instrumented water pools in three underground halls, and their operation through the first year of eight detector data-taking.
Hyperbolic polynomials and canonical sign patterns
Creators: name: Kostov, Vladimir Petrov
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: A real univariate polynomial is hyperbolic if all its roots are real. By Descartes' rule of signs a hyperbolic polynomial (HP) with all coefficients nonvanishing has exactly $c$ positive and exactly $p$ negative roots counted with multiplicity, where $c$ and $p$ are the numbers of sign changes and sign preservations in the sequence of its coefficients. We discuss the question: If the moduli of all $c+p$ roots are distinct and ordered on the positive half-axis, then at which positions can the $p$ moduli of negative roots be depending on the positions of the positive and negative signs of the coefficients of the polynomial? We are especially interested in the choices of these signs for which exactly one order of the moduli of the roots is possible.
THE EFFECTS OF PARENTAL ABSENCE ON PUPILS' EMOTIONAL GROWTH AND ACADEMIC SUCCESS IN SOCIAL STUDIES: A STUDY IN BWARI AREA COUNCIL, FCT ABUJA
Creators: name: Chigozie, Ifeanyi Okeke
name: Patricia, Nnenna Ibe
Publisher: name: AYDEN JOURNAL
Year: 2024
Subjects: Academic Achievement, Emotional Development, Parental Absence, Pupils, Social Studies

description: The study examined the impact of parental absence on the emotional development, and academic achievement of pupils in Social Studies in Bwari Area Council, FCT Abuja.  The adopted the cross sectional survey design. The population of the study comprised of 15,652 (M= 8,721 and F= 6,931) and 426 teachers, making a total population of 16,07. A sample of 15 primary schools out of 59 primary schools with two hundred (200) pupils and one fifty (50) teachers were drawn and used for the study through simple random sampling and purposive techniques. The instrument used for data collection was self-constructed titled “Parental Absence on Emotional Development and Achievement Questionnaire (PAEDIAQ). The 31 items questionnaire was validated by tow experts one from test and measurement and the other from Social Studies Education, all from University of Jos. The data collected were analysed with mean and standard deviation for all the research questions, while Pearson correlation coefficient and Chi-square statistics were used to test the hypotheses formulated. The result revealed that parental absence impact on primary five pupils’ academic achievement in Social Studies in Bwari Area Council, FCT. It was also found that that there is a significant difference between parental absence and emotional development of pupils in Bwari Area Council, FCT Abuja. The study recommended that parents should play a leading role in supporting, monitoring, mentoring and evaluating their children’s emotional behaviour early in life for their children’s wellbeing.
Compaction of Soil under Freezing Conditions and Subsequent Thawing
Creators: name: Zeigler, Clyde Calhoun
name: Veale, Joseph Ernest
Publisher: name: California Institute of Technology
Year: 1947
Subjects: subject: (Civil Engineering)
subject: Civil Engineering
subject: FOS: Civil engineering

description: This paper is a report of the investigation
by laboratory and reference material of the practicability
of compaction of frozen or freezing soils for
such uses as airfields and roads. The work consisted
of the determination of the major variable factors
involved and an approximate verification in the laboratory
of the effects of those factors. Three natural,
sandy soils were tested, and the results indicate
generally that use of frozen soils is probably limited
to a very narrow range of moisture content near that
of hygroscopic moisture and that their use rapidly
becomes less practicable as moisture contents increase
and as soil gradation goes from the granular into the
silt and clay range.
Probing parton dynamics of QCD matter with Ω and φ production
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: nucl-ex

description: © 2016 American Physical Society. We present measurements of Ω and φ production at midrapidity from Au+Au collisions at nucleon-nucleon center-of-mass energies sNN=7.7, 11.5, 19.6, 27, and 39 GeV by the STAR experiment at the BNL Relativistic Heavy Ion Collider (RHIC). Motivated by the coalescence formation mechanism for these strange hadrons, we study the ratios of N(Ω-+Ω#x0002B;)/[2N(φ)]. These ratios as a function of transverse momentum pT fall on a consistent trend at high collision energies, but start to show deviations in peripheral collisions at sNN=19.6, 27, and 39 GeV, and in central collisions at 11.5 GeV in the intermediate pT region of 2.4-3.6 GeV/c. We further evaluate empirically the strange quark pT distributions at hadronization by studying the Ω/φ ratios scaled by the number of constituent quarks (NCQ). The NCQ-scaled Ω/φ ratios show a suppression of strange quark production in central collisions at 11.5 GeV compared to sNN≥19.6 GeV. The shapes of the presumably thermal strange quark distributions in 0-60% most central collisions at 7.7 GeV show significant deviations from those in 0-10% most central collisions at higher energies. These features suggest that there is likely a change of the underlying strange quark dynamics in the transition from quark matter to hadronic matter at collision energies below 19.6 GeV.
Translators’ image in Iranian feature films
Creators: name: Khoshsaligheh, Masood
name: Kafi, Mohsen
name: Noorani, Seyede Narges
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: Linguistics
subject: FOS: Languages and literature
subject: 200399 Language Studies not elsewhere classified

description: Abstract Drawing on the significant influence of audiovisual media on people’s conceptions of any given phenomenon, the current qualitative study was an attempt to identify the social dimensions of the Iranian translator, represented in feature films in Iran. Specifically, the study aimed to explore the identity, socioeconomic status and lifestyle of the translator characters depicted in Iranian feature films. Therefore, 16 Iranian films, involving interlingual translation, were selected. The thematic analysis revealed five sociological aspects of the Iranian translator reflected in Iranian films: identity of the translator, socioeconomic status of the translator, lifestyle and attitude of the translator, attitudes of other characters towards the translator, and the role of translation in the turn of events. The results indicated that translators are generally shown as self-disciplined and dissociable individuals who are devoted to their work. The translator characters mostly had minor roles in the plot and turn of events.
Exploring the change of semiconductor hole mass under Coulomb scattering
Creators: name: Shiau, Shiue-Yuan
name: Combescot, Monique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Semiconductor valence holes are known to have heavy and light effective masses; but the consequence of this mass difference on Coulomb scatterings has been considered intractable and thus ignored up to now. The reason is that the heavy/light index is quantized along the hole momentum that changes in a Coulomb scattering; so, a heavy hole can turn light, depending on the scattering angle. This mass change has never been taken into account in many-body problems, and a single ``average'' hole mass has been used instead. In order to study the missed consequences of this crude approximation, the first necessary step is to determine the Coulomb scatterings with valence holes in a precise way. We here derive these scatterings from scratch, starting from the threefold valence-electron spatial level, all the way through the spin-orbit splitting, the Kohn-Luttinger effective Hamiltonian, its spherical approximation, and the phase factors that appear when turning from valence electron to hole operators, that is, all the points of semiconductor physics that render valence holes so different from a naïve positive charge.
description: 9 pages, 2 figures
Predicting clinical outcome from reward circuitry function and white matter structure in behaviorally and emotionally dysregulated youth
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: Adolescent
Affective Symptoms
Bipolar Disorder
Brain
Child
Emotions
Female
Forecasting
Humans
Longitudinal Studies
Male
Parents
Psychiatric Status Rating Scales
Reward
Treatment Outcome
White Matter

description: © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Behavioral and emotional dysregulation in childhood may be understood as prodromal to adult psychopathology. Additionally, there is a critical need to identify biomarkers reflecting underlying neuropathological processes that predict clinical/behavioral outcomes in youth. We aimed to identify such biomarkers in youth with behavioral and emotional dysregulation in the Longitudinal Assessment of Manic Symptoms (LAMS) study. We examined neuroimaging measures of function and white matter in the whole brain using 80 youth aged 14.0 (s.d.=2.0) from three clinical sites. Linear regression using the LASSO (Least Absolute Shrinkage and Selection Operator) method for variable selection was used to predict severity of future behavioral and emotional dysregulation measured by the Parent General Behavior Inventory-10 Item Mania Scale (PGBI-10M)) at a mean of 14.2 months follow-up after neuroimaging assessment. Neuroimaging measures, together with near-scan PGBI-10M, a score of manic behaviors, depressive behaviors and sex, explained 28% of the variance in follow-up PGBI-10M. Neuroimaging measures alone, after accounting for other identified predictors, explained ∼1/3 of the explained variance, in follow-up PGBI-10M. Specifically, greater bilateral cingulum length predicted lower PGBI-10M at follow-up. Greater functional connectivity in parietal-subcortical reward circuitry predicted greater PGBI-10M at follow-up. For the first time, data suggest that multimodal neuroimaging measures of underlying neuropathologic processes account for over a third of the explained variance in clinical outcome in a large sample of behaviorally and emotionally dysregulated youth. This may be an important first step toward identifying neurobiological measures with the potential to act as novel targets for early detection and future therapeutic interventions.
Growth factor parametrization and modified gravity
Creators: name: Gong, Yungui
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The growth rate of matter perturbation and the expansion rate of the Universe can be used to distinguish modified gravity and dark energy models in explaining the cosmic acceleration. The growth rate is parametrized by the growth index $γ$. We discuss the dependence of $γ$ on the matter energy density $Ω$ and its current value $Ω_0$ for a more accurate approximation of the growth factor. The observational data, including the data of the growth rate, are used to fit different models. The data strongly disfavor the Dvali-Gabadadze-Porrati model. For the dark energy model with a constant equation of state, we find that $Ω_0=0.27\pm 0.02$ and $w=-0.97\pm 0.09$. For the $Λ$CDM model, we find that $γ=0.64^{+0.17}_{-0.15}$. For the Dvali-Gabadadze-Porrati model, we find that $γ=0.55^{+0.14}_{-0.13}$.
description: 7 figures, use revtex, v2: minor corrections, PRD in press
MCTS Based Agents for Multistage Single-Player Card Game
Creators: name: Godlewski, Konrad
name: Sawicki, Bartosz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The article presents the use of Monte Carlo Tree Search algorithms for the card game Lord of the Rings. The main challenge was the complexity of the game mechanics, in which each round consists of 5 decision stages and 2 random stages. To test various decision-making algorithms, a game simulator has been implemented. The research covered an agent based on expert rules, using flat Monte-Carlo search, as well as complete MCTS-UCB. Moreover different playout strategies has been compared. As a result of experiments, an optimal (assuming a limited time) combination of algorithms were formulated. The developed MCTS based method have demonstrated a advantage over agent with expert knowledge.
description: Published in 2020 IEEE 21st International Conference on Computational Problems of Electrical Engineering. arXiv admin note: text overlap with arXiv:2109.12001
Renormalization of flavor singlet and nonsinglet fermion bilinear operators
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: hep-lat

description: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. We compute the difference in the renormalization of flavor singlet and nonsinglet fermion bilinear operators, to two loops in perturbation theory. Our results are applicable to a rather wide class of lattice actions with Symanzik improved gluons, stout links and clover fermions, including the Twisted Mass and SLiNC actions. A more detailed presentation of our results, along with relevant references, will appear in our forthcoming publication [1].
Can String Theory Predict the Weinberg Angle?
Creators: name: Raby, S.
name: Wingerter, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate whether the hypercharge assignments in the Standard Model can be interpreted as a hint at Grand Unification in the context of heterotic string theory. To this end, we introduce a general method to calculate U(1)_Y for any heterotic orbifold and compare our findings to the cases where hypercharge arises from a GUT. Surprisingly, in the overwhelming majority of 3-2 Standard Models, a non-anomalous hypercharge direction can be defined, for which the spectrum is vector-like. For these models, we calculate sin^2 theta to see how well it agrees with the standard GUT value. We find that 12% have sin^2 theta = 3/8, while all others have values which are less. Finally, 89% of the models with sin^2 theta = 3/8 have U(1)_Y in SU(5).
description: 35 pages, 6 figures
Identifying Women with Mammographically-Occult Breast Cancer Leveraging GAN-Simulated Mammograms
Creators: name: Lee, Juhun
name: Nishikawa, Robert M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Our objective is to show the feasibility of using simulated mammograms to detect mammographically-occult (MO) cancer in women with dense breasts and a normal screening mammogram who could be triaged for additional screening with magnetic resonance imaging (MRI) or ultrasound. We developed a Conditional Generative Adversarial Network (CGAN) to simulate a mammogram with normal appearance using the opposite mammogram as the condition. We used a Convolutional Neural Network (CNN) trained on Radon Cumulative Distribution Transform (RCDT) processed mammograms to detect MO cancer. For training CGAN, we used screening mammograms of 1366 women. For MO cancer detection, we used screening mammograms of 333 women (97 MO cancer) with dense breasts. We simulated the right mammogram for normal controls and the cancer side for MO cancer cases. We created two RCDT images, one from a real mammogram pair and another from a real-simulated mammogram pair. We finetuned a VGG16 on resulting RCDT images to classify the women with MO cancer. We compared the classification performance of the CNN trained on fused RCDT images, CNN_{Fused} to that of trained only on real RCDT images, CNN_{Real}, and to that of trained only on simulated RCDT images, CNN_{Simulated}. The test AUC for CNN_{Fused} was 0.77 with a 95% confidence interval (95CI) of [0.71, 0.83], which was statistically better (p-value < 0.02) than the CNN_{Real} AUC of 0.70 with a 95CI of [0.64, 0.77] and CNN_{Simulated} AUC of 0.68 with a 95CI of [0.62, 0.75]. It showed that CGAN simulated mammograms can help MO cancer detection.
description: This article has been accepted for publication in IEEE Transactions on Medical Imaging. This is the author's version which has not been fully edited and content may change prior to final publication. Citation information: DOI 10.1109/TMI.2021.3108949. \c{opyright} 2021 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission
Measurement of the reactor antineutrino flux and spectrum at Daya Bay
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: Daya Bay Collaboration

description: © 2016 American Physical Society. This Letter reports a measurement of the flux and energy spectrum of electron antineutrinos from six 2.9 GWth nuclear reactors with six detectors deployed in two near (effective baselines 512 and 561 m) and one far (1579 m) underground experimental halls in the Daya Bay experiment. Using 217 days of data, 296 721 and 41 589 inverse β decay (IBD) candidates were detected in the near and far halls, respectively. The measured IBD yield is (1.55±0.04) ×10-18 cm2 GW-1 day-1 or (5.92±0.14) ×10-43 cm2 fission-1. This flux measurement is consistent with previous short-baseline reactor antineutrino experiments and is 0.946±0.022 (0.991±0.023) relative to the flux predicted with the Huber-Mueller (ILL-Vogel) fissile antineutrino model. The measured IBD positron energy spectrum deviates from both spectral predictions by more than 2σ over the full energy range with a local significance of up to ∼4σ between 4-6 MeV. A reactor antineutrino spectrum of IBD reactions is extracted from the measured positron energy spectrum for model-independent predictions.
Graphic communications education, art or technology? : a curriculum materials resource guide
Creators: name: Scurr, Peter Grant
Publisher: name: University of British Columbia
Year: 2010

description: Graphic communications courses are being taught in the province of British Columbia without official recognition from the Ministry of Education. As a result development of graphic communication programs has been sporadic and independent. Although the Ministry of Education does not officially recognize Graphic Communications, they do provide funds for equipment and facilities. Graphic communications or graphic arts is traditionally accepted as a component of industrial education. Without official recognition by the Ministry of Education and the Faculties of Education, there is no teacher training in graphic communications available in this province. Thus educators involved with graphic communication courses have diverse backgrounds and have been trained in either art, industrial education or business education. Curriculum development has reflected this diversity of experience and background. This thesis project was initiated because of the following discrepancies. There are no prescribed courses of study but seventy-five programs exist throughout the province. There are no provincial teacher training programs but teachers are authorized to offer graphic communications courses. There are no provincially prepared resource materials but curriculum guides are available in Canada and the United States. The objective of this thesis is to assemble resource material for graphic communications education and to propose a rationale for the development of a program of studies recognized by the Ministry of Education. Graphic communications is a component of visual communications that integrates concepts from both art education and industrial education. This blend of art and technology can provide a philosophical base for program development. The interface of personal expression with machine manipulation is the basis for preparing graphic materials. The review of graphic communications curriculum materials was initiated to determine the existence and availability of prepared materials. The research was conducted over a twelve month period and consisted of correspondence with every state and provincial education agency in Canada and the United States. The collection represents the present status of curriculum development and provides numerous examples of curriculum strategies. An emphasis on motor skill development was evident in the collected materials. Graphic communications is an inter-disciplinary course of studies and program development should reflect the relationship of imagery and technology. Personal expression and skill development are components needed to prepare and produce graphic material. This philosophical blend of concepts from art and industrial education can provide the impetus to promote the integration of imagery and technology inherent in graphic communications education.
Synthesis and Basicity Studies of Quinolino[7,8- h]quinoline Derivatives
Creators: name: Rowlands, GJ
name: Severinsen, RJ
name: Buchanan, JK
name: Shaffer, Karl
name: Jameson, HT
name: Thennakoon, N
name: Leito, I
name: Lõkov, M
name: Kütt, A
name: Vianello, R
name: Despotović, I
name: Radić, N
name: Plieger, PG
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: 30499 Medicinal and Biomolecular Chemistry not elsewhere classified
subject: FOS: Chemical sciences
subject: Organic Chemistry

description: Quinolino[7,8-h]quinoline is a superbasic compound, with a pKaH in acetonitrile greater than that of 1,8-bis(dimethylaminonaphthalene) (DMAN), although its synthesis and the synthesis of its derivatives can be problematic. The use of halogen derivatives 4,9-dichloroquinolino[7,8-h]quinoline (16) and 4,9-dibromoquinolino[7,8-h]quinoline (17) as precursors has granted the formation of a range of substituted quinolinoquinolines. The basicity and other properties of quinolinoquinolines can be modified by the inclusion of suitable functionalities. The experimentally obtained pKaH values of quinolino[7,8-h]quinoline derivatives show that N4,N4,N9,N9-tetraethylquinolino[7,8-h]quinoline-4,9-diamine (26) is more superbasic than quinolino[7,8-h]quinoline. Computationally derived pKaH values of quinolinoquinolines functionalized with dimethylamino (NMe2), 1,1,3,3-tetramethylguanidino (N-C(NMe2)2) or N,N,N′,N′,N″,N″-hexamethylphosphorimidic triamido (N-P(NMe2)3) groups are significantly greater than those of quinolino[7,8-h]quinoline. Overall, electron-donating functionalities are observed to increase the basicity of the quinolinoquinoline moiety, while the substitution of electron-withdrawing groups lowers the basicity.
Letter from Kathleen Raine to Robin Skelton, September 14, [1965?]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter, Raine discusses who to publish her new collection of poetry with, mentoring a young writer [Jan le Witt?]; she also discusses Peter [Russel?] and other poets including John Heath-Stubbs and John Scott.
Discovery of multiple Lorentzian components in the X-ray timing properties of the Narrow Line Seyfert 1 Ark 564
Creators: name: McHardy, I. M.
name: Arevalo, P.
name: Uttley, P.
name: Papadakis, I. E.
name: Summons, D. P.
name: Brinkmann, W.
name: Page, M. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a power spectral analysis of a 100 ksec XMM-Newton observation of the narrow line Seyfert 1 galaxy Ark~564. When combined with earlier RXTE and ASCA observations, these data produce a power spectrum covering seven decades of frequency which is well described by a power law with two very clear breaks. This shape is unlike the power spectra of almost all other AGN observed so far, which have only one detected break, and resemble Galactic binary systems in a soft state. The power spectrum can also be well described by the sum of two Lorentzian-shaped components, the one at higher frequencies having a hard spectrum, similar to those seen in Galactic binary systems. Previously we have demonstrated that the lag of the hard band variations relative to the soft band in Ark 564 is dependent on variability time-scale, as seen in Galactic binary sources. Here we show that the time-scale dependence of the lags can be described well using the same two-Lorentzian model which describes the power spectrum, assuming that each Lorentzian component has a distinct time lag. Thus all X-ray timing evidence points strongly to two discrete, localised, regions as the origin of most of the variability. Similar behaviour is seen in Galactic X-ray binary systems in most states other than the soft state, i.e. in the low-hard and intermediate/very high states. Given the very high accretion rate of Ark 564 the closest analogy is with the very high (intermediate) state rather than the low-hard state. We therefore strengthen the comparison between AGN and Galactic binary sources beyond previous studies by extending it to the previously poorly studied very high accretion rate regime.
description: 11 pages, 11 figures, accepted for publication in MNRAS
Multi-resource energy-efficient routing in cloud data centers with network-As-A-service
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: cs.NI

description: © 2015 IEEE. With the rapid development of software defined networking and network function virtualization, researchers have proposed a new cloud networking model called Network-As-A-Service (NaaS) which enables both in-network packet processing and application-specific network control. In this paper, we revisit the problem of achieving network energy efficiency in data centers and identify some new optimization challenges under the NaaS model. Particularly, we extend the energy-efficient routing optimization from single-resource to multi-resource settings. We characterize the problem through a detailed model and provide a formal problem definition. Due to the high complexity of direct solutions, we propose a greedy routing scheme to approximate the optimum, where flows are selected progressively to exhaust residual capacities of active nodes, and routing paths are assigned based on the distributions of both node residual capacities and flow demands. By leveraging the structural regularity of data center networks, we also provide a fast topology-Aware heuristic method based on hierarchically solving a series of vector bin packing instances. Extensive simulations show that the proposed routing scheme can achieve significant gain on energy savings and the topology-Aware heuristic can produce comparably good results while reducing the computation time to a large extent.