cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Towards Efficient Similarity-Aware Time-Series Classification
Creators: name: Arnav
name: , Li
name: Wenjie
name: , Jessica
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Time Series Classification (TSC), as one of the most fundamental data mining tasks, has attracted tremendous research attention in the past two decades. Given a set of time series instances with their corresponding class labels (training set), the goal of classification is to train a model such that it can accurately predict the class labels of future, previously unseen time series. However, when the training set is small, most existing approaches would not work due to the lack of labeled data. Semi-supervised time series classification has been proposed to address this issue. One such recent model is called SIM-TSC, which integrates similarity and deep learning into a single model. SIM-TSC uses a popular, shift-invariant distance measure called Dynamic Time Warping (DTW) to create a graph, in which similar time series instances have higher weights, and then train a graph neural network on it. However, it requires the construction of a full similarity matrix, which has quadratic time complexity in the data size and thus has limited usability on larger datasets. To address this challenge, instead of using a DTW similarity matrix to build the graph, we propose to compute a fast, linear-time approximation of DTW that lower bounds the original DTW distances. The lower bounding distance we adapt is called LB-Keogh. The similarity matrix built with LB-Keogh will serve as the backbone of the graph neural network. In the experiments, we run our method using eight real-world datasets from the well-known UCR time series classification archive. The results demonstrate that our approach significantly reduces the running time of creating the similarity matrix for the graph, especially on large datasets, while achieving comparable classification accuracy with the DTW similarity matrix.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Determinants of Pediatric ?COVID-19 Vaccine Uptake at the County Level in the US, July and September 2021
Creators: name: , Emma
name: , Kevin
name: , Amira
name: , Taylor
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: When it comes to infectious diseases such as COVID-19, the main line of defense is getting vaccinated. This study focuses on analyzing what factors affect pediatric vaccine uptake (PVU) at the county level in the US. Our first step was to compile a list of attributes based on domain knowledge in epidemiology. We then collected variable and vaccine data from 2 points in time. We chose to observe data from July 10th, 2021 (one month after emergency use authorization was granted for kids under 18) and September 30th, 202 (approximately one month after school started). Following this, we removed some of the attributes due to data incompleteness, while imputing other attributes that had minor data loss. We tested for positive spatial autocorrelation and used an imputation technique that fills in missing values using the average nearest values. We then used the Ordinary Least Squares (OLS) regression to measure the association between each attribute and pediatric vaccine uptake. After removing variables that had high collinearity, our final explanatory variables included: the number of social memberships per 100k, percent of people 25+ with no high school diploma, percent Black population, percent Asian population, percent Latino population, percent female population, percent Fox viewership, number of pharmacies, percent democratic population, and percent of children eligible for free lunch. Out of these variables, the strongest explanatory variable for PVU was political views; the percent Democrats increased by 1% in a county, PVU increased by 0.68% in July, and 0.87% in September. Now that we have this information, it is important to show policymakers what communities they need to advocate vaccines.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Detecting recurrence domains of dynamical systems by symbolic dynamics
Creators: name: Graben, Peter beim
name: Hutt, Axel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We propose an algorithm for the detection of recurrence domains of complex dynamical systems from time series. Our approach exploits the characteristic checkerboard texture of recurrence domains exhibited in recurrence plots (RP). In phase space, RPs yield intersecting balls around sampling points that could be merged into cells of a phase space partition. We construct this partition by a rewriting grammar applied to the symbolic dynamics of time indices. A maximum entropy principle defines the optimal size of intersecting balls. The final application to high-dimensional brain signals yields an optimal symbolic recurrence plot revealing functional components of the signal.
description: Accepted for Physical Review Letters; 10 pages, 2 figures
Bulk-boundary thermodynamic equivalence: a topology viewpoint
Creators: name: Zhang, Ming
name: Jiang, Jie
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Setting the cosmological constant to be dynamical, we study the bulk and boundary thermodynamics of charged Anti-de Sitter black holes. We develop mass/energy formulas in terms of thermodynamic state functions for the extended thermodynamics, mixed thermodynamics, and boundary conformal field theory thermodynamics. We employ the residue method to study the topological properties of the phase transitions. Our analysis reveals that the bulk and boundary thermodynamics are topologically equivalent for both criticalities and first-order phase transitions in the canonical ensembles, as well as for the Hawking-Page(-like) phase transitions in the grand canonical ensembles. Additionally, those three kinds of phase transitions are shown to be distinguished by their unique topological charges. Our results exemplify the gravity-gauge duality in terms of topology.
description: 16 pages, published version
Take a Load Off! Enhancing Artificial Intelligence Offloading in Multiplayer Games
Creators: name: Prajakta
name: , Sai
name: , Stephanie
name: , James
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: In online multiplayer games, the architecture typically consists of a central game server and clients, which display the game while sending and receiving data to and from the game server. The majority of processing is typically done on the client side to lighten the load on the server. We can improve these games by creating more complex AI by using AI offloading for greater computational efficiency. The idea is that the AIs’ logic is computed by different machines besides the game server. Offloading AI allows developers and even players to create smarter, more complex AI, as the game isn’t bottlenecked by one main server. These AI can easily be added or removed from the game, as they are treated similarly to a player. However, this method has drawbacks, including security threats, latency caused by the communication between the AI machine and servers, and AI machines crashing or disconnecting. These machines would need to be treated differently than a player, with checks that automatically restart the machine or have fallback AI in case of a malfunction. In this paper, we will be exploring how to mitigate these drawbacks and find use cases for the technique.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Superconductivity at 5K in NdO0.5F0.5BiS2
Creators: name: Jha, Rajveer
name: Kumar, Anuj
name: Singh, Shiva Kumar
name: Awana, V. P. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report appearance of superconductivity at 5K in NdO0.5F0.5BiS2 and supplement the discovery [1] of the same in layered sulfide based ZrCuSiAs type compounds. The bulk polycrystalline compound is synthesized by conventional solid state route via vacuum encapsulation technique. Detailed structural analysis showed that the studied compound is crystallized in tetragonal P4/nmm space group with lattice parameters a = 3.9911(3) Å, c = 13.3830(2) Å. Bulk superconductivity is established in NdO0.5F0.5BiS2 at 5K by both transport and magnetic measurements. Electrical transport measurements showed superconducting Tc onset at 5.2K and Tc (ρ=0) at 4.7K. Under applied magnetic field both Tc onset and Tc (ρ =0) decrease to lower temperatures and an upper critical field [Hc2(0)] of above 23kOe is estimated. Both AC and DC magnetic susceptibility measurements showed bulk superconductivity below 5K. Isothermal magnetization (MH) exhibited typical type II behavior with lower critical field (Hc1) of around 15Oe. Isothermal magnetization (MH) exhibited typical type-II behavior with lower critical field (Hc1) of around 15Oe. Specific heat [Cp(T)] is investigated in the temperature range of 1.9-50K in zero external magnetic field. A Schottky-type anomaly is observed at low temperature below 7K. This low temperature Schottky can be attributed to the change in the entropy of the system.
description: 10 pages text + Figs (New Version):comments/suggestion welcome (awana@mail.nplindia.ernet.in)
Data Processing with FPGAs on Modern Architectures
Creators: name: Jiang, Wenqi
name: Korolija, Dario
name: Alonso, Gustavo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Trends in hardware, the prevalence of the cloud, and the rise of highly demanding applications have ushered an era of specialization that quickly changes how data is processed at scale. These changes are likely to continue and accelerate in the next years as new technologies are adopted and deployed: smart NICs, smart storage, smart memory, disaggregated storage, disaggregated memory, specialized accelerators (GPUS, TPUs, FPGAs), and a wealth of ASICs specifically created to deal with computationally expensive tasks (e.g., cryptography or compression). In this tutorial, we focus on data processing on FPGAs, a technology that has received less attention than, e.g., TPUs or GPUs but that is, however, increasingly being deployed in the cloud for data processing tasks due to the architectural flexibility of FPGAs, along with their ability to process data at line rate, something not possible with other types of processors or accelerators. In the tutorial, we will cover what FPGAs are, their characteristics, their advantages and disadvantages, as well as examples from deployments in the industry and how they are used in various data processing tasks. We will introduce FPGA programming with high-level languages and describe hardware and software resources available to researchers. The tutorial includes case studies borrowed from research done in collaboration with companies that illustrate the potential of FPGAs in data processing and how software and hardware are evolving to take advantage of the possibilities offered by FPGAs. The use cases include: (1) approximated nearest neighbor search, which is relevant to databases and machine learning, (2) remote disaggregated memory, showing how the cloud architecture is evolving and demonstrating the potential for operator offloading and line rate data processing, and (3) recommendation system as an application with tight latency constraints.
Diffusion in nonuniform temperature and its geometric analog
Creators: name: Polettini, Matteo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a Langevin equation for systems in an environment with nonuniform temperature. At odds with an older proposal, ours admits a locally Maxwellian steady state, local equipartition holds and for detailed-balanced (reversible) systems statistical and physical entropies coincide. We describe its thermodynamics, which entails a generalized version of the First Law and Clausius's characterization of reversibility. Finally, we show that a Brownian particle constrained into a smooth curve behaves according to our equation, as if experiencing nonuniform temperature.
Using Wifi-Based Occupancy Data to Increase Energy Efficiency for Smart Buildings
Creators: name: Rithvik
name: , Dominic
name: Duminda
name: Kamaljeet
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Although the efficiency of HVAC systems has improved over the years especially for “smart buildings”, there hasn’t been significant improvement in terms of maximizing the efficiency of energy output throughout the day in a building. Often, HVAC systems have pre-programmed cycles which are excellent for residential settings - in which people will spend more time, especially due to the pandemic - but not necessarily for commercial buildings. With climate change already showing its effects on the environment, it’s clear that systems that are able to reduce energy wastage will be critical. The primary purpose of the research is to identify how to use real-time wifi-based occupancy data in order to increase energy efficiency. Over the past few weeks, our team has designed a script to help identify the number of devices and consequently the number of people in a certain room of a building using a machine learning model. The script retrieves input from wifi logs such as the signal strength and the number of connected devices. In addition, the script uses the timestamps to determine at which time of the day most devices are connected. The number of devices along with the timestamp is fed into a regression model to predict the occupancy. The ramifications of technology that can maximize or reduce energy output based on real-time data on the number of people in a building are vast. Eventually, the goal is to build an HVAC system that can rapidly adjust its output based on real-time occupancy data and reduce energy wastage.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Determining the Relationship between UVAI and AOD Correlation, MCE, and FRP in the September 2020 Fires
Creators: name: , Stephanie
name: Yunyao
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: In 2020, the Western Coast of the United States experienced a series of wildfires, which released great quantities of aerosols into the atmosphere. The Aerosol Optical Depth (AOD) is a value that represents how much radiation aerosols block. The VIIRS AOD550 measures AOD on the visible spectrum and the NASA TROPOMAER UVAI measures AOD on the UV spectrum, both of which gathered data from the 2020 wildfire period. The Fire Radiative Power (FRP) and Modified Combustion Efficiency (MCE) show the strength of the fire in certain areas. This particular case analyzes the Washington Fires from 9/5/20 - 9/17/20 to see if there was a relationship between AOD, UVAI, MCE, and FRP values. To do this, I graphed UVAI and AOD correlation using the box method, where I restricted the data points to a certain latitude-longitude range, and the distance method, where I only included the data when the distance from the fire was less than 0.2 degrees. Using data from the VIIRS AOD500, I also separated the data into all aerosol types and only smoke to see how aerosol composition affected correlation. In a time series, I graphed the correlation using each method, average MCE, and total FRP for each day to see if there was a relationship between the values. Although the data did not show an obvious relationship between the values, correlation tended to be lower when the MCE values dropped.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Presentación: El destinatario en cuatro diccionarios monolingües de aprendizaje para ELE
Creators: name: Rey Castillo, Marisol
Publisher: name: Zenodo
Year: 2021
Subjects: Diccionario monolingüe de aprendizaje
enfoque léxico
aprendizaje del léxico
lexicografía didáctica
español como lengua extranjera

description: Presentación para el 7° Encuentro Internacional de Español como Lengua Extranjera.
Photorealistic ray tracing of free-space invisibility cloaks made of uniaxial dielectrics
Creators: name: Halimeh, Jad C.
name: Wegener, Martin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The design rules of transformation optics generally lead to spatially inhomogeneous and anisotropic impedance-matched magneto-dielectric material distributions for, e.g., free-space invisibility cloaks. Recently, simplified anisotropic non-magnetic free-space cloaks made of a locally uniaxial dielectric material (calcite) have been realized experimentally. In a two-dimensional setting and for in-plane polarized light propagating in this plane, the cloaking performance can still be perfect for light rays. However, for general views in three dimensions, various imperfections are expected. In this paper, we study two different purely dielectric uniaxial cylindrical free-space cloaks. For one, the optic axis is along the radial direction, for the other one it is along the azimuthal direction. The azimuthal uniaxial cloak has not been suggested previously to the best of our knowledge. We visualize the cloaking performance of both by calculating photorealistic images rendered by ray tracing. Following and complementing our previous ray-tracing work, we use an equation of motion directly derived from Fermats principle. The rendered images generally exhibit significant imperfections. This includes the obvious fact that cloaking does not work at all for horizontal or for ordinary linear polarization of light. Moreover, more subtle effects occur such as viewing-angle-dependent aberrations. However, we still find amazingly good cloaking performance for the purely dielectric azimuthal uniaxial cloak.
description: 12 pages, 3 figures, journal paper
Quenched complexity of equilibria for asymmetric Generalized Lotka-Volterra equations
Creators: name: Ros, Valentina
name: Roy, Felix
name: Biroli, Giulio
name: Bunin, Guy
Publisher: name: arXiv
Year: 2023
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the Generalized Lotka-Volterra system of equations with all-to-all, random asymmetric interactions describing high-dimensional, very diverse and well-mixed ecosystems. We analyze the multiple equilibria phase of the model and compute its quenched complexity, i.e., the expected value of the logarithm of the number of equilibria of the dynamical equations. We discuss the resulting distribution of equilibria as a function of their diversity, stability and average abundance. We obtain the quenched complexity by means of the replicated Kac-Rice formalism, and compare the results with the same quantity obtained within the annealed approximation, as well as with the results of the cavity calculation and, in the limit of symmetric interactions, of standard methods to compute the complexity developed in the context of glasses.
description: v2 with small modifications
Fermions in two dimensions, bosonization, and exactly solvable models
Creators: name: de Woul, Jonas
name: Langmann, Edwin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences
subject: 82-02, 82B23, 82D55

description: We discuss interacting fermion models in two dimensions, and, in particular, such that can be solved exactly by bosonization. One solvable model of this kind was proposed by Mattis as an effective description of fermions on a square lattice. We review recent work on a specific relation between a variant of Mattis' model and such a lattice fermion system, as well as the exact solution of this model. The background for this work includes well-established results for one-dimensional systems and the high-Tc problem. We also mention exactly solvable extensions of Mattis' model.
description: 21 pages, 2 figures, invited review
Ziphius cavirostris G. Cuvier 1823
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Ziphiidae
Ziphius
Ziphius cavirostris

description: Ziphius cavirostris G. Cuvier, 1823. Rech. Oss. Foss., 5:350. TYPE LOCALITY: France, Bouches-du-Rhone, between Fos and the mouth of the Galegeon River. DISTRIBUTION: Worldwide, tropical, temperate, and subarctic waters. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411005006001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 302, DOI: 10.5281/zenodo.7352983
Geometric Resonances in Bose-Einstein Condensates with Two- and Three-Body Interactions
Creators: name: Al-Jibbouri, Hamid
name: Vidanovic, Ivana
name: Balaz, Antun
name: Pelster, Axel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We investigate geometric resonances in Bose-Einstein condensates by solving the underlying time-dependent Gross-Pitaevskii equation for systems with two- and three-body interactions in an axially-symmetric harmonic trap. To this end, we use a recently developed analytical method [Phys. Rev. A 84, 013618 (2011)], based on both a perturbative expansion and a Poincaré-Lindstedt analysis of a Gaussian variational approach, as well as a detailed numerical study of a set of ordinary differential equations for variational parameters. By changing the anisotropy of the confining potential, we numerically observe and analytically describe strong nonlinear effects: shifts in the frequencies and mode coupling of collective modes, as well as resonances. Furthermore, we discuss in detail the stability of a Bose-Einstein condensate in the presence of an attractive two-body interaction and a repulsive three-body interaction. In particular, we show that a small repulsive three-body interaction is able to significantly extend the stability region of the condensate.
description: 27 pages, 13 figures
How do physics students evaluate artificial intelligence responses on comprehension questions? A study on the perceived scientific accuracy and linguistic quality
Creators: name: Dahlkemper, Merten Nikolay
name: Lahme, Simon Zacharias
name: Klein, Pascal
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: This study aimed at evaluating how students perceive the linguistic quality and scientific accuracy of ChatGPT responses to physics comprehension questions. A total of 102 first- and second-year physics students were confronted with three questions of progressing difficulty from introductory mechanics (rolling motion, waves, and fluid dynamics). Each question was presented with four different responses. All responses were attributed to ChatGPT, but in reality one sample solution was created by the researchers. All ChatGPT responses obtained in this study were wrong, imprecise, incomplete, or misleading. We found little differences in the perceived linguistic quality between ChatGPT responses and the sample solution. However, the students rated the overall scientific accuracy of the responses significantly differently, with the sample solution being rated best for the questions of low and medium difficulty. The discrepancy between the sample solution and the ChatGPT responses increased with the level of self-assessed knowledge of the question content. For the question of highest difficulty (fluid dynamics) that was unknown to most students, a ChatGPT response was rated just as good as the sample solution. Thus, this study provides data on the students' perception of ChatGPT responses and the factors influencing their perception. The results highlight the need for careful evaluation of ChatGPT responses both by instructors and students, particularly regarding scientific accuracy. Therefore, future research could explore the potential of similar "spot the bot"-activities in physics education to foster students' critical thinking skills.
description: 21 pages, 3 figures, submitted to Physical Review: Physics Education Research
Nellis Air Force Base Cold War-Era Historic Property Survey - Photographs
Creators: name: Haagen, Jordan
Year: 2020
Subjects: subject: Clark (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3965/clark-county
subject: United States of America (Country)
valueUri: https://core.tdar.org/browse/geographic-keyword/384/united-states-of-america-country
subject: Las Vegas, Nevada
valueUri: https://core.tdar.org/browse/geographic-keyword/76911/las-vegas-nevada
subject: Nevada (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/919/nevada-state-territory
subject: Nye (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4104/nye-county
subject: Nellis Air Force Base, Nevada
valueUri: https://core.tdar.org/browse/geographic-keyword/80650/nellis-air-force-base-nevada
subject: Cold War
valueUri: https://core.tdar.org/browse/temporal-keyword/7288/cold-war

description: Photos of the Cold War building inventory.
Parafermionic edge zero modes in Z_n-invariant spin chains
Creators: name: Fendley, Paul
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A sign of topological order in a gapped one-dimensional quantum chain is the existence of edge zero modes. These occur in the Z_2-invariant Ising/Majorana chain, where they can be understood using free-fermion techniques. Here I discuss their presence in spin chains with Z_n symmetry, and prove that for appropriate coupling they are exact, even in this strongly interacting system. These modes are naturally expressed in terms of parafermions, generalizations of fermions to the Z_n case. I show that parafermionic edge zero modes do not occur in the usual ferromagnetic and antiferromagnetic cases, but rather only when the interactions are chiral, so that spatial-parity and time-reversal symmetries are broken.
description: 22 pages. v2: small changes, added references
Dijet production, collision centrality and backgrounds in high-energy p-p collisions
Creators: name: Trainor, Thomas A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Two aspects of high-energy \pp collisions share common phenomenological elements: (a) A correlation between jet production and \pp centrality is suggested by the transverse partonic structure of hadrons inferred from deep-inelastic scattering data. (b) The {\em underlying event} (UE) is defined as the final-state particles complementary to a triggered high-energy dijet. An observable common to both topics is variation of so-called {\em transverse multiplicity} $N_\perp$ with a $p_{t,trig}$ dijet trigger. We test assumptions associated with \pp collision centrality and the UE. We determine the nature of the UE and explore the relation between jet production and \pp centrality. We use the {\em two-component model} (TCM) of spectra and correlations derived from 200 GeV \pp collisions to construct a simulated particle distribution on $(p_t,n_{ch})$ to predict the $N_\perp$ response to $p_{t,trig}$. The $p_t$ spectrum TCM combined in this analysis with measured minimum-bias \pp angular correlations suggests that the UE includes a substantial contribution from the triggered dijet in addition to the contribution from projectile fragmentation (beam-beam remnants). The jet contribution to $N_\perp$ may represent a universal large-angle base common to all dijets that extends across $2π$ azimuth. The analysis further suggests that \pp centrality is not controlled significantly by $p_{t,trig}$ but may be correlated to some extent with an imposed $n_{ch}$ condition, depending on the role of fluctuations. Future correlation studies may better determine the role of \pp centrality. These results may have implications for ongoing RHIC analysis and LHC searches for physics beyond the standard model.
description: 17 pages, 12 figures
Tempo vs. Pitch: understanding self-supervised tempo estimation
Creators: name: Morais, Giovana
name: Davies, Matthew E. P.
name: Queiroz, Marcelo
name: Fuentes, Magdalena
Publisher: name: arXiv
Year: 2023
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Self-supervision methods learn representations by solving pretext tasks that do not require human-generated labels, alleviating the need for time-consuming annotations. These methods have been applied in computer vision, natural language processing, environmental sound analysis, and recently in music information retrieval, e.g. for pitch estimation. Particularly in the context of music, there are few insights about the fragility of these models regarding different distributions of data, and how they could be mitigated. In this paper, we explore these questions by dissecting a self-supervised model for pitch estimation adapted for tempo estimation via rigorous experimentation with synthetic data. Specifically, we study the relationship between the input representation and data distribution for self-supervised tempo estimation.
description: 5 pages, 3 figures, published on 2023 IEEE International Conference on Acoustics, Speech, and Signal Processing
Lincoln Area Inventory Forms
Creators: name: Haagen, Jordan
Year: 2020
Subjects: subject: Clark (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3965/clark-county
subject: Indian Springs Valley
valueUri: https://core.tdar.org/browse/geographic-keyword/22911/indian-springs-valley
subject: United States of America (Country)
valueUri: https://core.tdar.org/browse/geographic-keyword/384/united-states-of-america-country
subject: Las Vegas, Nevada
valueUri: https://core.tdar.org/browse/geographic-keyword/76911/las-vegas-nevada
subject: Nevada (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/919/nevada-state-territory
subject: Nye (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4104/nye-county
subject: Nellis Air Force Base, Nevada
valueUri: https://core.tdar.org/browse/geographic-keyword/80650/nellis-air-force-base-nevada

description: Lincoln Area Inventory Forms for Nellis Air Force Base, Nevada.
MPEC 2023-M35 : DAILY ORBIT UPDATE (2023 June 18)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Analyzing the Relationship Between Ultraviolet Aerosol Index and Aerosol Optical Depth to Fill in Missing Data from a 2021 Wildfire
Creators: name: , Charu
name: Pun
name: , Stephanie
name: , Jenny
name: Yunyao
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Aerosol Optical Depth (AOD) is the measure of aerosols in the air during a certain period of time and indicates relatively hazy parts of the atmosphere. Yet, in many areas, when plotting the AOD on a map, it measures no data. As an alternative, the Ultraviolet Aerosol Index (UVAI), also determines the presence of dust and smoke, two ultraviolet-absorbing aerosols. I hypothesize that there is a way to fill in the “no data” parts of the AOD map using the data already given, including UVAI. To do this, I observed a specific time period (7/10/2021 - 7/22/2021) in which wildfires on the west coast and in Canada were prevalent. Then, I utilized Python libraries to create scatterplots calculating the correlation, as well as a linear regression equation, to analyze the relationship between UVAI and AOD for these dates. Using the linear regression equation, I could plug in UVAI values to get new, potentially correct, AOD values. I replotted the data with these new values and the results were drastically more coverage than the original AOD maps. Therefore, since the correlation between UVAI and AOD was high, the relationship between them was statistically significant enough to fill in the missing data. This new data gives a better understanding of where these wildfires originated and help find points that may have been missed by the photometer.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Lasing at half the Josephson frequency with exponentially long coherence times
Creators: name: Godschalk, Frans
name: Nazarov, Yuli V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe a superconducting device capable of producing laser light in the visible range at half the Josephson generation frequency, with the optical phase of the light locked to the superconducting phase difference. An earlier proposed device, the so called "half-Josephson laser" [Phys. Rev. Lett. 107, 073901 (2011)], cannot provide long coherence times, because of spontaneous switchings between the emitter states. To circumvent this we consider N >> 1 emitters driving an optical resonator mode. We derive a general model that captures essential physics of such devices while not depending on specific microscopic details. We find the conditions under which the coherence times are exponentially long, thus surpassing the fundamental limitation on the coherence times of common lasers. For this we study the noise in the device. In particular, we are interested in the rate of large fluctuations of the light field in the limit where the typical fluctuations are small. The large fluctuations are responsible for switching of the laser between stable states of radiation and therefore determine the coherence time.
description: 20 pages, 5 figures
Quasinormal Modes and Bounding Greybody Factors of GUP-corrected Black Holes in Kalb-Ramond Gravity
Creators: name: Baruah, Anshuman
name: Övgün, Ali
name: Deshamukhya, Atri
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The vacuum expectation value of the non-minimally coupled Kalb-Ramond (KR) field leads to spontaneous local Lorentz symmetry violation, and static spherically symmetric solutions exist. In this study, we study the quasinormal modes (QNMs) of modified black holes in non--minimally coupled KR gravity. We employ a higher-order Padé averaged WKB method to compute the QNMs for scalar, electromagnetic, and gravitational perturbations. In order to account for quantum corrections, we examine the geometric characteristics of the horizon and QNMs by introducing the generalized uncertainty principle (GUP). Additionally, we shed light on the impact of the Lorentz violating parameters on our findings and estimate QNMs for different perturbations. Further, we estimate bounds on the greybody factors for the modified and GUP-corrected black holes. Our findings reveal the influence of the Lorentz violating parameters in the model on the QNM frequencies and their reliance on the GUP parameters.
title: ‘A Juggling Act’! A Socio-Material Analysis of the role and identity of practice teachers in the UK National Health Service
Creators: name: Adams, Karen
Publisher: name: University of Liverpool Repository
Year: 2023

description: Practice teachers within the UK National Health Service have had an unstable history during which their status has fluctuated. They belong to that category of occupations where there is a dual role identity, the practice teacher element being subordinate or secondary to a clinical role which is often aligned to additional leadership and management responsibilities. The secondary nature of the role contributes to the liminal status of this small professional group and this affects the professional identity of practice teachers and the extent to which the role can maintain itself and achieve recognition. This study seeks to reconcile identity and socio-material theory in order to offer innovative and original insights into how the practice teachers dual professional identity develops and how they learn and enact their role. This study develops empirical insights into the role and attributes of practice teachers and the context in which they work in order to produce a body of knowledge which could inform their preparation for the role. One to one interviews were carried out with ten practice teachers, four managers and eight specialist community nursing students in one region of the UK. In addition a focus group interview was conducted with six specialist community nurse educators drawn from a national organisation, and one to one interviews were conducted with the chair of a body representing nurse educators and a regulatory body representative. The analysis was framed by the socio-material literature and this illuminated the broader range of factors influencing learning and their impact upon professional roles. The findings suggest that health service reforms in recent years have led to the development of an efficiency driven model of health care and this impinges upon practice teacher roles and practice learning. The evidence indicated an absence of an infrastructure to support the practice teacher role in all its aspects and as a consequence the role is ambiguous and diffuse. A range of differing socio-material factors influence the specific localised contexts in which practice teachers experience and learn their role. As a consequence practice teacher roles are assembled in different ways and they are thus not a homogenous group. A corollary of this is that the professional identity of practice teachers is unstable and they have struggled to develop a shared identity. The findings depict practice teachers who have a capacity for self-determination and who are proactive in attempting to establish a more stable professional identity.
Vainshtein Mechanism in Binary Pulsars
Creators: name: de Rham, Claudia
name: Tolley, Andrew J.
name: Wesley, Daniel H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the scalar gravitational radiation from a binary pulsar system in the simplest model that exhibits the Vainshtein mechanism. The mechanism is successful in screening the effect from scalar fields conformally coupled to matter, although gravitational radiation is less suppressed relative to its general relativity predictions than static fifth forces effects within the pulsar system. This is due to a combination of two effects: firstly the existence of monopole and dipole radiation; secondly the Vainshtein suppression comes from the hierarchy of scales between the inverse frequency scale and the Vainshtein radius, rather than the orbital radius of the pulsar system. Extensions of these results will have direct relevance to infrared modifications of gravity, such as massive gravity theories, which are known to exhibit a Vainshtein mechanism. Generalization to Galileon models with higher order interactions are likely to provide stronger constraints.
description: minor revisions to match published version in prd
Higher derivative contributions to black hole thermodynamics at NNLO
Creators: name: Ma, Liang
name: Pang, Yi
name: Lu, H.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In an effective theory of gravity, thermodynamic quantities of black holes receive corrections from the infinite series of higher derivative terms. At the next to leading order, these can be obtained by using only the leading order solution. In this paper, we push forward this property to the next to next to leading order. We propose a formula which yields the Euclidean action of asymptotically flat black holes at the next to next to leading order using only the solution up to and including the next to leading order. Other conserved quantities are derived from the Euclidean action via standard thermodynamic relation. We verify our formula in examples of $D$-dimensional pure gravity and Einstein-Maxwell theory extended by 4- and 6-derivative terms. Based on our formula, we also prove that for asymptotically flat black holes, the physical quantities are invariant under field redefinitions.
description: Latex, 40 pages with 17-page appendices, references added
Towards higher-spin holography in ambient space of any dimension
Creators: name: Didenko, V. E.
name: Skvortsov, E. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the propagators for higher-spin master fields in anti-de Sitter space of arbitrary dimension. A method is developed to construct the propagators directly without solving any differential equations. The use of the ambient space, where AdS is represented as a hyperboloid and its conformal boundary as a projective light-cone, simplifies the approach and makes a direct contact between boundary-to-bulk propagators and two-point functions of conserved currents.
description: 26 pages, one figure; contribution to the J.Phys.A special volume on "Higher Spin Theories and AdS/CFT" edited by Matthias Gaberdiel and Mikhail Vasiliev
The multilinear Littlewood-Paley square operators and their commutators on weighted Morrey spaces
Creators: name: Cen, Xi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 42B25, Secondary 42B20, 47H60, 47B47

description: In this paper, we prove the boundedness of the multilinear Littlewood-Paley square operators and their commutators on weighted Morrey spaces, then we give the boundedness and weak-type $L\log L$ estimates for the commutators of multilinear Littlewood-Paley g-functions and multilinear Marcinkiewicz integrals on weighted Morrey spaces in the form of corollaries.
description: 30 pages
Improving Aerosol Optical Depth (AOD) data via Regression Methods derived from Mean Combustion Efficiency (MCE) and Aerosol Index (UVAI) Data Products
Creators: name: , Charu
name: , Stephanie
name: , Jenny
name: Yunyao
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Aerosol optical depth (AOD) is a valuable parameter that reflects the density and characteristics of atmospheric aerosols, providing critical insight for studies into processes like climate change or ecological situation assessment. However, AOD data limitations arise from dense cloud cover, rendering a lack of variables over certain coverage areas. To combat this, a foray into developing a regression model that interpolates AOD data based on Mean Combustion Efficiency trends and UV Aerosol index (UVAI) correlation has been proposed. This study focuses on the California August Complex fire from August 20 to August 31, 2020, comparing UVAI, AOD, and MCE data to discern optimal regression models. Models are evaluated with correlation coefficient (CC), mean bias (MB) and normalized root mean square error (NRMSE).
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Renormalization of the baryon axial vector current in large-N_c chiral perturbation theory: Effects of the decuplet-octet mass difference and flavor symmetry breaking
Creators: name: Flores-Mendieta, Ruben
name: Hernandez-Ruiz, Maria A.
name: Hofmann, Christoph P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The baryon axial vector current is computed at one-loop order in large-N_c baryon chiral perturbation theory, where N_c is the number of colors. Loop graphs with octet and decuplet intermediate states are systematically incorporated into the analysis and the effects of the decuplet-octet mass difference and SU(3) flavor symmetry breaking are accounted for. As expected, large-N_c cancellations between different one-loop graphs are observed as a consequence of the large-N_c spin-flavor symmetry of QCD baryons. Fitting our analytical formulas against experimental data on baryon semileptonic decays and the strong decays of decuplet baryons, a detailed numerical analysis regarding the determination of the basic parameters of large-N_c baryon chiral perturbation theory as well as the extraction of the baryon axial vector couplings is performed. The large-N_c baryon chiral perturbation theory predictions are in very good agreement both with the expectations from the 1/N_c expansion and with the experimental data.
description: 33 pages, 1 figure
Root-$T \overline{T}$ Deformed Boundary Conditions in Holography
Creators: name: Ebert, Stephen
name: Ferko, Christian
name: Sun, Zhengdi
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We develop the holographic dictionary for pure $\mathrm{AdS}_3$ gravity where the Lagrangian of the dual $2d$ conformal field theory has been deformed by an arbitrary function of the energy-momentum tensor. In addition to the $T \overline{T}$ deformation, examples of such functions include a class of marginal stress tensor deformations which are special because they leave the generating functional of connected correlators unchanged up to a redefinition of the source and expectation value. Within this marginal class, we identify the unique deformation that commutes with the $T \overline{T}$ flow, which is the root-$T \overline{T}$ operator, and write down the modified boundary conditions corresponding to this root-$T \overline{T}$ deformation. We also identify the unique marginal stress tensor flow for the cylinder spectrum of the dual CFT which commutes with the inviscid Burgers' flow driven by $T \overline{T}$, and we propose this unique flow as a candidate root-$T \overline{T}$ deformation of the energy levels. We study BTZ black holes in $\mathrm{AdS}_3$ subject to root-$T \overline{T}$ deformed boundary conditions, and find that their masses flow in a way which is identical to that of our candidate root-$T \overline{T}$ energy flow equation, which offers evidence that this flow is the correct one. Finally, we also obtain the root-$T \overline{T}$ deformed boundary conditions for the gauge field in the Chern-Simons formulation of $\mathrm{AdS}_3$ gravity.
description: 65 pages, LaTeX; v2: typos corrected and references added; v3: published version