cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evolutionary Foundation for Heterogeneity in Risk Aversion
Creators: name: Heller, Yuval
name: Nehama, Ilan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Theoretical Economics (econ.TH)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: We examine the evolutionary basis for risk aversion with respect to aggregate risk. We study populations in which agents face choices between alternatives with different levels of aggregate risk. We show that the choices that maximize the long-run growth rate are induced by a heterogeneous population in which the least and most risk-averse agents are indifferent between facing an aggregate risk and obtaining its linear and harmonic mean for sure, respectively. Moreover, approximately optimal behavior can be induced by a simple distribution according to which all agents have constant relative risk aversion, and the coefficient of relative risk aversion is uniformly distributed between zero and two.
Estimation in Semiparametric Transition Measurement Error Models for Longitudinal Data
Creators: name: Zeng, Donglin
name: Pan, Wenqin
name: Lin, Xihong
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: We consider semiparametric transition measurement error models for longitudinal data, where one of the covariates is measured with error in transition models, and no distributional assumption is made for the underlying unobserved covariate. An estimating equation approach based on the pseudo conditional score method is proposed. We show the resulting estimators of the regression coefficients are consistent and asymptotically normal. We also discuss the issue of efficiency loss. Simulation studies are conducted to examine the finite-sample performance of our estimators. The longitudinal AIDS Costs and Services Utilization Survey data are analyzed for illustration.
The Supply Chain of Experience Tourism along the Chi River Basin, from Buriram to Surin Province
Creators: name: Ubonwan Suwannapusit
name: Nisanath Kaewwinud
name: Tarinee Meecharoen
name: Ampol Chayomchai
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Supply chain
experience tourism
the Chi River

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 658-672
Globally hyperbolic spacetimes: slicings, boundaries and counterexamples
Creators: name: Sánchez, Miguel
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 53C50, 83C05, 35L52, 58J45

description: The Cauchy slicings for globally hyperbolic spacetimes and their relation with the causal boundary are surveyed and revisited, starting at the seminal conformal boundary constructions by R. Penrose. Our study covers: (1) adaptive possibilities and techniques for their Cauchy slicings, (2) global hyperbolicity of sliced spacetimes, (3) critical review on the conformal and causal boundaries for a globally hyperbolic spacetime, and (4) procedures to compute the causal boundary of a Cauchy temporal splitting by using isocausal comparison with a static product. New simple counterexamples on $\mathbb{R}^2$ illustrate a variety of possibilities related to these splittings, such as the logical independence (for normalized sliced spacetimes) between the completeness of the slices and global hyperbolicity, the necessity of uniform bounds on the slicings in order to ensure global hyperbolicity, or the insufficience of these bounds for the computation of the causal boundary. A refinement of one of these examples shows that the space of all the (normalized, conformal classes of) globally hyperbolic metrics on a smooth product manifold $\mathbb{R}\times S$ is not convex, even though it is path connected by means of piecewise convex combinations.
description: 51 pages, 9 figures. Final version with minor modifications to appear in the Springer Topical Collection Singularity theorems, causality, and all that (SCRI21)
(103015) Unknown Purser
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Random interface growth in random environment: Renormalization group analysis of a simple model
Creators: name: Antonov, N. V.
name: Kakin, P. I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: 82C28

description: We study effects of turbulent mixing on the random growth of an interface in the problem of the deposition of a substance on a substrate. The growth is modelled by the well-known Kardar--Parisi--Zhang model. The turbulent advecting velocity field is modelled by the Kraichnan's rapid-change ensemble: Gaussian statistics with the correlation function $\langle vv\rangle \propto δ(t-t') \, k^{-d-ξ}$, where $k$ is the wave number and $0
description: 21 page, LaTeX source with eps figures. arXiv admin note: text overlap with arXiv:0808.0076
A Semi-Blind Method for Localization of Underwater Acoustic Sources
Creators: name: Weiss, Amir
name: Arikan, Toros
name: Vishnu, Hari
name: Deane, Grant B.
name: Singer, Andrew C.
name: Wornell, Gregory W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Underwater acoustic localization has traditionally been challenging due to the presence of unknown environmental structure and dynamic conditions. The problem is richer still when such structure includes occlusion, which causes the loss of line-of-sight (LOS) between the acoustic source and the receivers, on which many of the existing localization algorithms rely. We develop a semi-blind passive localization method capable of accurately estimating the source's position even in the possible absence of LOS between the source and all receivers. Based on typically-available prior knowledge of the water surface and bottom, we derive a closed-form expression for the optimal estimator under a multi-ray propagation model, which is suitable for shallow-water environments and high-frequency signals. By exploiting a computationally efficient form of this estimator, our methodology makes comparatively high-resolution localization feasible. We also derive the Cramér-Rao bound for this model, which can be used to guide the placement of collections of receivers so as to optimize localization accuracy. The method improves a balance of accuracy and robustness to environmental model mismatch, relative to existing localization methods that are useful in similar settings. The method is validated with simulations and water tank experiments.
Ion-Driven Instabilities in the Inner Heliosphere II: Classification and Multi-Dimensional Mapping
Creators: name: Martinovic, Mihailo M.
name: Klein, Kristopher G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Linear theory is a well developed framework for characterizing instabilities in weakly collisional plasmas, such as the solar wind. In the previous instalment of this series, we analyzed ~1.5M proton and alpha particle Velocity Distribution Functions (VDFs) observed by Helios I and II to determine the statistical properties of the standard instability parameters such as the growth rate, frequency, the direction of wave propagation, and the power emitted or absorbed by each component, as well as to characterize their behavior with respect to the distance from the Sun and collisional processing. In this work, we use this comprehensive set of instability calculations to train a Machine Learning algorithm consisting of three interlaced components that: 1) predict if an interval is unstable from observed VDF parameters; 2) predict the instability properties for a given unstable VDF; and 3) classify the type of the unstable mode. We use these methods to map the properties in multi-dimensional phase space to find that the parallel-propagating, proton-core-induced Ion Cyclotron mode dominates the young solar wind, while the oblique Fast Magnetosonic mode regulates the proton beam drift in the collisionally old plasma.
Local Influence for Generalized Linear Models with Missing Covariates
Creators: name: Ibrahim, Joseph G.
name: Zhu, Hongtu
name: Shi, Xiaoyan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: In the analysis of missing data, sensitivity analyses are commonly used to check the sensitivity of the parameters of interest with respect to the missing data mechanism and other distributional and modeling assumptions. In this article, we formally develop a general local influence method to carry out sensitivity analyses of minor perturbations to generalized linear models in the presence of missing covariate data. We examine two types of perturbation schemes (the single-case and global perturbation schemes) for perturbing various assumptions in this setting. We show that the metric tensor of a perturbation manifold provides useful information for selecting an appropriate perturbation. We also develop several local influence measures to identify influential points and test model misspecification. Simulation studies are conducted to evaluate our methods, and real datasets are analyzed to illustrate the use of our local influence measures.
Deep Learning for Artifact Removal in Galaxy Images
Creators: name: Afonso, Javier Hernández
name: Gallé, Roberto Baena
Publisher: name: Zenodo
Year: 2022
Subjects: Deconvolution
Point spread function
Astronomical Images
Convolutional neural network
Deep learning

description: In astronomical image acquisition, it is common to find artifacts and anomalies because the particularities of the studied objects (distance, light intensity, physical nature, etc.), as well as the acquisition process (instrumental aberrations, atmospheric turbulunce, etc.). Two of these aberrations are the Poisson noise and the effect of the point spread function (PSF). Poisson noise occurs due to the oscillatory nature of light measurements by optical captation instruments. The low number of photons that the instruments capture means that this noise can be modeled using a Poisson distribution. It has the particularity of being closely correlated with the real image. On the other hand, the PSF models the response of an optical captation system to an input in the form of a Dirac delta, and it generates a blurring effect and a loss of spatial resolution. In the case of shift-invariant systems, the resulting image can be approximated as the convolution of the real image with the PSF. Motivated for the recent advances in the field of Deep Learning for image reconstruction, we have built a solution based on convolutional neural network (CNN) for astronomic image aberrations removal.
Marginal Hazards Regression for Retrospective Studies within Cohort with Possibly Correlated Failure Time Data
Creators: name: Cai, Jianwen
name: Kang, Sangwook
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: A retrospective dental study was conducted to evaluate the degree to which pulpal involvement affects tooth survival. Due to the clustering of teeth, the survival times within each subject could be correlated and thus the conventional method for the case–control studies cannot be directly applied. In this article, we propose a marginal model approach for this type of correlated case–control within cohort data. Weighted estimating equations are proposed for the estimation of the regression parameters. Different types of weights are also considered for improving the efficiency. Asymptotic properties of the proposed estimators are investigated and their finite sample properties are assessed via simulations studies. The proposed method is applied to the aforementioned dental study.
A Robust Mean-field Game of Boltzmann-Vlasov-like Traffic Flow
Creators: name: Tirumalai, Amoolya
name: Baras, John S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Historically, traffic modelling approaches have taken either a particle-like (microscopic) approach, or a gas-like (meso- or macroscopic) approach. Until recently with the introduction of mean-field games to the controls community, there has not been a rigorous framework to facilitate passage between controls for the microscopic models and the macroscopic models. We begin this work with a particle-based model of autonomous vehicles subject to drag and unknown disturbances, noise, and a speed limit in addition to the control. We formulate a robust stochastic differential game on the particles. We pass formally to the infinite-particle limit to obtain a robust mean-field game PDE system. We solve the mean-field game PDE system numerically and discuss the results. In particular, we obtain an optimal control which increases the bulk velocity of the traffic flow while reducing congestion.
description: Omission of a line corrected in this version. 6 pages; 3 figures; 1 algorithm; Submitted to ACC 2022
Semiparametric Transformation Models with Random Effects for Joint Analysis of Recurrent and Terminal Events
Creators: name: Zeng, Donglin
name: Lin, D. Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: We propose a broad class of semiparametric transformation models with random effects for the joint analysis of recurrent events and a terminal event. The transformation models include proportional hazards/intensity and proportional odds models. We estimate the model parameters by the nonparametric maximum likelihood approach. The estimators are shown to be consistent, asymptotically normal, and asymptotically efficient. Simple and stable numerical algorithms are provided to calculate the parameter estimators and to estimate their variances. Extensive simulation studies demonstrate that the proposed inference procedures perform well in realistic settings. Applications to two HIV/AIDS studies are presented.
(103014) Ada Elizabeth Purser
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Testing Random Effects in the Linear Mixed Model Using Approximate Bayes Factors
Creators: name: Saville, Benjamin R.
name: Herring, Amy H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Deciding which predictor effects may vary across subjects is a difficult issue. Standard model selection criteria and test procedures are often inappropriate for comparing models with different numbers of random effects due to constraints on the parameter space of the variance components. Testing on the boundary of the parameter space changes the asymptotic distribution of some classical test statistics and causes problems in approximating Bayes factors. We propose a simple approach for testing random effects in the linear mixed model using Bayes factors. We scale each random effect to the residual variance and introduce a parameter that controls the relative contribution of each random effect free of the scale of the data. We integrate out the random effects and the variance components using closed form solutions. The resulting integrals needed to calculate the Bayes factor are low-dimensional integrals lacking variance components and can be efficiently approximated with Laplace’s method. We propose a default prior distribution on the parameter controlling the contribution of each random effect and conduct simulations to show that our method has good properties for model selection problems. Finally, we illustrate our methods on data from a clinical trial of patients with bipolar disorder and on data from an environmental study of water disinfection by-products and male reproductive outcomes.
(103013) Henry George Purser
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
A unified strategy to compute some special functions of number-theoretic interest
Creators: name: Languasco, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 33F05, 33B15, 65D20, 11M35, 11-04

description: We introduce an algorithm to compute the functions belonging to a suitable set ${\mathscr F}$ defined as follows: $f\in {\mathscr F}$ means that $f(s,x)$, $s\in A\subset {\mathbb R}$ being fixed and $x>0$, has a power series expansion centred at $x_0=1$ with convergence radius greater or equal than $1$; moreover, it satisfies a functional equation of step $1$ and the Euler-Maclaurin summation formula can be applied to $f$. Denoting the Euler gamma-function as $Γ$, we will show that, for $x>0$, $\log Γ(x)$, the digamma function $ψ(x)$, the polygamma functions $ψ^{(w)}(x)$, $w\in {\mathbb N}$, $w\ge1$, and, for $s>1$ being fixed, the Hurwitz $ζ(s,x)$-function and its first partial derivative $\frac{\partialζ}{\partial s}(s,x)$ are in ${\mathscr F}$. In all these cases the coefficients of the involved power series will depend on the values of $ζ(u)$, $u>1$, where $ζ$ is the Riemann zeta-function. As a by-product, we will also show how to compute the Dirichlet $L$-functions $L(s,χ)$ and $L^\prime(s,χ)$, $s> 1$, $χ$ being a primitive Dirichlet character, by inserting the reflection formulae of $ζ(s,x)$ and $\frac{\partialζ}{\partial s}(s,x)$ into the first step of the Fast Fourier Transform algorithm. Moreover, we will obtain some new formulae and algorithms for the Dirichlet $β$-function and for the Catalan constant $G$. Finally, we will study the case of the Bateman $G$-function and of the alternating Hurwitz zeta-function, also known as the $η$-function; we will show that, even if they are not in ${\mathscr F}$, our approach can be adapted to handle them too. In the last section we will also describe some tests that show a performance gain with respect to a standard multiprecision implementation of $ζ(s,x)$ and $\frac{\partialζ}{\partial s}(s,x)$, $s>1$, $x>0$.
description: revised and enlarged version; new title; 31 pages
Identification of newly observed singly charmed baryons using relativistic flux tube model
Creators: name: Jakhad, Pooja
name: Oudichhya, Juhi
name: Gandhi, Keval
name: Rai, Ajay Kumar
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the mass spectra of $Λ_{c}$, $Ξ_{c}$, $Σ_{c}$, $Ξ_{c}^{'}$, and $Ω_{c}$ baryons in the framework of quark-diquark configuration using relativistic flux tube model. The spin-dependent interactions are included in the j-j coupling scheme to find complete mass spectra. We satisfactorily describe the known singly charmed baryons in quark-diquark configuration. The possible spin-parity $ J^{P} $ quantum numbers are assigned to several experimentally observed states. Furthermore, some useful mass predictions are given for more excited states that are reasonably consistent with other model predictions for lower excited states. {From the obtained results the Regge trajectories for these singly charmed baryons are constructed in the ($J,M^{2}$) plane and the properties like linearity, parallelism and equidistant are verified.} Also, these predictions should be tested in future experiments.
description: 18 Pages, 9 figures Accepted in Phys. Rev. D
(103012) Lucy Sarah Purser
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Optimal randomness certification from one entangled bit
Creators: name: Acín, Antonio
name: Pironio, Stefano
name: Vértesi, Tamás
name: Wittek, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By performing local projective measurements on a two-qubit entangled state one can certify in a device-independent way up to one bit of randomness. We show here that general measurements, defined by positive-operator-valued measures, can certify up to two bits of randomness, which is the optimal amount of randomness that can be certified from an entangled bit. General measurements thus provide an advantage over projective ones for device-independent randomness certification.
description: 7 pages, 1 figure, computational details at http://nbviewer.ipython.org/github/peterwittek/ipython-notebooks/blob/master/Optimal%20randomness%20generation%20from%20entangled%20quantum%20states.ipynb
Three-Dimensional Array-Based Group Testing Algorithms
Creators: name: Hudgens, Michael G.
name: Kim, Hae Young
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: We derive the operating characteristics of three-dimensional array-based testing algorithms for case identification in the presence of testing error. The operating characteristics investigated include efficiency (i.e., expected number of tests per specimen) and error rates (e.g., sensitivity, specificity, positive, and negative predictive values). The methods are illustrated by comparing the proposed algorithms with previously studied hierarchical and two-dimensional array algorithms for detecting recent HIV infections in North Carolina. Our results indicate that three-dimensional array-based algorithms can be more efficient and accurate than previously proposed algorithms in settings with test error and low prevalence.
Choix rationnel, d'une aire de stockage du minerai extrait, lors de l'exploitation simultanée des plateaux bauxitiques de Silidara, Sangaredi et Bidikoun. Concession CBG
Creators: name: Daouda KEITA
name: Lamine CISSE
name: Mamadi 1 KEITA
Publisher: name: Zenodo
Year: 2024

description: L’aire de stockage du minerai provenant de plusieurs gisements ou de plusieurs chantiers d’exploitation est le point de convergence des masses minérales extraites de ces différents chantiers des plateaux en activité. C’est pour cette raison, la bonne maitrise des paramètres et indices particuliers de ces processus confère au choix rationnel d’une aire de stockage toute son importance ; car, il constitue une étape dans la chaine technologique qui détermine la rationalité de la production d’une mine.

L’objectif de cet ARTICLE est de trouver une nouvelle aire de stockage du minerai lors de l’exploitation simultanée des plateaux bauxitiques de Silidara, Sangaredi et Bidikoun en vue d’optimiser le cycle de transport et le nombre de courses qui influent sur la productivité des engins de chargement et de transport à la mine de Sangaredi, concession.CBG.

Pour le cas précis de ce travail, on a déterminé les coordonnées du centre de l'emplacement d'une nouvelle aire de stockage des minerais provenant des chantiers de production sur l’ensemble des plateaux bauxitiques en exploitation, par la méthode de barycentration.

Ces coordonnées barycentriques ont permis de représenter sur le plan d’ensemble des plateaux en exploitation dans la concession, le point d’équilibre cherché. Ce choix définitif de la position d'une aire dépendra en fait des résultats de calcul de l'optimum théorique et des données pratiques recueillies sur le terrain.

 Ce point optimum trouvé nous a permis de procéder :

a) -Au calcul de la durée des courses et le nombre de courses des engins de transport par rapport à l’aire de stockage existante ;

b) -Au calcul de la durée des courses et le nombre des courses des engins de transport par rapport à l’aire de stockage trouvée.

En faisant la comparaison de ces résultats de calculs de cycles et de nombres de courses nous réussissons à démontrer la dépendance notoire de la productivité de la mine, de la position du lieu de stockage des minerais extraits dans les différents chantiers de production. 

Enfin, l’amélioration de la productivité des engins de chargement et de transport à travers un choix judicieux de cette aire de stockage, optimise la production de la mine et réduit drastiquement les dépenses des opérations d’exploitation.
Feature detection in the primordial power spectrum with LSS reconstructions based on Bayesian inference
Creators: name: Somonte, Guillermo Martínez
name: Airam Marcos Caballero
name: González, Enrique Martínez
Publisher: name: Zenodo
Year: 2022
Subjects: Cosmology
Primordial Power Spectrum
Bayesian Inference
Non-parametric reconstruction
Multi-nest sampling
Inflationary features in primordial observables

description: In this poster we collect the ongoing results of reconstructing through a bayesian-inference non-parametric model the primordial power spectrum of simulated LSS catalogues. These catalogues have been simulated according to a different feature models, departing from the standard-model predicted power law.
Discovering Uncolored Naturalness in Exotic Higgs Decays
Creators: name: Curtin, David
name: Verhaaren, Christopher B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Solutions to the hierarchy problem usually require top partners. In standard SUSY or composite Higgs theories, the partners carry SM color and are becoming increasingly constrained by LHC searches. However, theories like Folded SUSY (FS), Twin Higgs (TH) and Quirky Little Higgs (QLH) introduce uncolored top partners, which can be SM singlets or carry electroweak charge. Their small production cross section left doubt as to whether the LHC can effectively probe such scenarios. Typically, these partners are charged under their own mirror color gauge group. In FS and QLH, the absence of light mirror matter allows glueballs to form at the bottom of the mirror spectrum. This is also the case in some TH realizations. The Higgs can decay to these mirror glueballs, with the glueballs decaying into SM particles with potentially observable lifetimes. We undertake the first detailed study of this glueball signature and quantitatively demonstrate the discovery potential of uncolored naturalness via exotic Higgs decays at the LHC and a potential future 100 TeV collider. Our findings indicate that mirror glueballs are the smoking gun signature of natural FS and QLH type theories, in analogy to tree-level Higgs coupling shifts for the TH. We show that glueball masses in the $\sim$ 10-60 GeV mass range are theoretically preferred. Careful treatment of lifetime, mirror-hadronization and nonperturbative uncertainties is required to perform meaningful collider studies. We outline several new search strategies for exotic Higgs decays of the form $h\to XX \to 4f$ at the LHC, with $X$ having lifetimes in the $10 μm$ to $km$ range. We find that FS stops can be probed with masses up to 600 (1100) GeV at the LHC with 300 (3000) /fb of data, and TH top partners could be accessible with masses up to 900 (1500) GeV. This makes exotic Higgs decays the prime discovery channel for uncolored naturalness at the LHC.
description: 31 pages + references, 10 figures. Extended sensitivity projections to glueball masses below 12 GeV, added model-independent presentation of limits, improved modeling of displaced vertex triggering and reconstruction. Conclusions unchanged
(103011) William Leigh Purser
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The $r$-coloring and maximum stable set problem in hypergraphs with bounded matching number and edge size
Creators: name: Li, Yanjia
name: Spirkl, Sophie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Motivated by the analogous questions in graphs, we study the complexity of coloring and stable set problems in hypergraphs with forbidden substructures and bounded edge size. Letting $ν(G)$ denote the maximum size of a matching in $H$, we obtain complete dichotomies for the complexity of the following problems parametrized by fixed $r, k, s \in \mathbb{N}$: $r$-Coloring in hypergraphs $G$ with edge size at most $k$ and $ν(G) \leq s$; $r$-Precoloring Extension in $k$-uniform hypergraphs $G$ with $ν(G) \leq s$; $r$-Precoloring Extension in hypergraphs $G$ with edge size at most $k$ and $ν(G) \leq s$; Maximum Stable Set in $k$-uniform hypergraphs $G$ with $ν(G) \leq s$; Maximum Weight Stable Set in $k$-uniform hypergraphs with $ν(G) \leq s$; as well as partial results for $r$-Coloring in $k$-uniform hypergraphs $ν(G) \leq s$. We then turn our attention to $2$-Coloring in 3-uniform hypergraphs with forbidden induced subhypergraphs, and give a polynomial-time algorithm when restricting the input to hypergraphs excluding a fixed one-edge hypergraph. Finally, we consider linear 3-uniform hypergraphs (in which every two edges share at most one vertex), and show that excluding an induced matching in $G$ implies that $ν(G)$ is bounded by a constant; and that $3$-coloring linear $3$-uniform hypergraphs $G$ with $ν(G) \leq 532$ is NP-hard.
description: Accepted manuscript; see DOI for journal version
(103010) Alfred Joseph Purser
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(103009) Mary Ann Drysdale
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Generalized Normalizing Flows via Markov Chains
Creators: name: Hagemann, Paul
name: Hertrich, Johannes
name: Steidl, Gabriele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Probability (math.PR)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Normalizing flows, diffusion normalizing flows and variational autoencoders are powerful generative models. This chapter provides a unified framework to handle these approaches via Markov chains. We consider stochastic normalizing flows as a pair of Markov chains fulfilling some properties and show how many state-of-the-art models for data generation fit into this framework. Indeed numerical simulations show that including stochastic layers improves the expressivity of the network and allows for generating multimodal distributions from unimodal ones. The Markov chains point of view enables us to couple both deterministic layers as invertible neural networks and stochastic layers as Metropolis-Hasting layers, Langevin layers, variational autoencoders and diffusion normalizing flows in a mathematically sound way. Our framework establishes a useful mathematical tool to combine the various approaches.
description: arXiv admin note: text overlap with arXiv:2109.11375
High-precision interpolation of stellar atmospheres with a deep neural network using a 1D convolutional auto encoder for feature extraction
Creators: name: Plaza, C. Westendorp
name: Ramos, A. Asensio
name: Prieto, C. Allende
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Given the widespread availability of grids of models for stellar atmospheres, it is necessary to recover intermediate atmospheric models by means of accurate techniques that go beyond simple linear interpolation and capture the intricacies of the data. Our goal is to establish a reliable, precise, lightweight, and fast method for recovering stellar model atmospheres, that is to say the stratification of mass column, temperature, gas pressure, and electronic density with optical depth given any combination of the defining atmospheric specific parameters: metallicity, effective temperature, and surface gravity, as well as the abundances of other key chemical elements. We employed a fully connected deep neural network which in turn uses a 1D convolutional auto-encoder to extract the nonlinearities of a grid using the ATLAS9 and MARCS model atmospheres. This new method we call iNNterpol effectively takes into account the nonlinearities in the relationships of the data as opposed to traditional machine-learning methods, such as the light gradient boosting method (LightGBM), that are repeatedly used for their speed in well-known competitions with reduced datasets. We show a higher precision with a convolutional auto-encoder than using principal component analysis as a feature extractor.We believe it constitutes a useful tool for generating fast and precise stellar model atmospheres, mitigating convergence issues, as well as a framework for future developments. The code and data for both training and direct interpolation are available online at https://github.com/cwestend/iNNterpol for full reproducibility and to serve as a practical starting point for other continuous 1D data in the field and elsewhere.
description: Accepted for publication in Astronomy and Astrophysics, 11 pages, 27 figures, 3 tables
Bayesian Variable Selection for Multivariate Spatially Varying Coefficient Regression
Creators: name: Fuentes, Montserrat
name: Herring, Amy H.
name: Evenson, Kelly R.
name: Reich, Brian J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Physical activity has many well-documented health benefits for cardiovascular fitness and weight control. For pregnant women, the American College of Obstetricians and Gynecologists currently recommends 30 minutes of moderate exercise on most, if not all, days; however, very few pregnant women achieve this level of activity. Traditionally, studies have focused on examining individual or interpersonal factors to identify predictors of physical activity. There is a renewed interest in whether characteristics of the physical environment in which we live and work may also influence physical activity levels. We consider one of the first studies of pregnant women that examines the impact of characteristics of the built environment on physical activity levels. Using a socioecologic framework, we study the associations between physical activity and several factors including personal characteristics, meteorological/air quality variables, and neighborhood characteristics for pregnant women in four counties of North Carolina. We simultaneously analyze six types of physical activity and investigate cross-dependencies between these activity types. Exploratory analysis suggests that the associations are different in different regions. Therefore we use a multivariate regression model with spatially-varying regression coefficients. This model includes a regression parameter for each covariate at each spatial location. For our data with many predictors, some form of dimension reduction is clearly needed. We introduce a Bayesian variable selection procedure to identify subsets of important variables. Our stochastic search algorithm determines the probabilities that each covariate’s effect is null, non-null but constant across space, and spatially-varying. We found that individual level covariates had a greater influence on women’s activity levels than neighborhood environmental characteristics, and some individual level covariates had spatially-varying associations with the activity levels of pregnant women.
(103008) Edwin Cock
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Design and Inference for Cancer Biomarker Study with an Outcome and Auxiliary-Dependent Subsampling
Creators: name: Wang, Xiaofei
name: Zhou, Haibo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: In cancer research, it is important to evaluate the performance of a biomarker (e.g. molecular, genetic, or imaging) that correlates patients’ prognosis or predicts patients’ response to a treatment in large prospective study. Due to overall budget constraint and high cost associated with bioassays, investigators often have to select a subset from all registered patients for biomarker assessment. To detect a potentially moderate association between the biomarker and the outcome, investigators need to decide how to select the subset of a fixed size such that the study efficiency can be enhanced. We show that, instead of drawing a simple random sample from the study cohort, greater efficiency can be achieved by allowing the selection probability to depend on the outcome and an auxiliary variable; we refer to such a sampling scheme as outcome and auxiliary-dependent subsampling (OADS). This paper is motivated by the need to analyze data from a lung cancer biomarker study that adopts the OADS design to assess EGFR mutations as a predictive biomarker for whether a subject responds to a greater extent to EGFR inhibitor drugs. We propose an estimated maximum likelihood method that accommodates the OADS design and utilizes all observed information, especially those contained in the likelihood score of EGFR mutations (an auxiliary variable of EGFR mutations) that is available to all patients. We derive the asymptotic properties of the proposed estimator and evaluate its finite sample properties via simulation. We illustrate the proposed method with a data example.
(103007) Myrtle Mary Cock
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Purely linear response of the quantum Hall current to space-adiabatic perturbations
Creators: name: Marcelli, Giovanna
name: Monaco, Domenico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences
subject: 81Q15, 81Q20, 81V70

description: Using recently developed tools from space-adiabatic perturbation theory, in particular the construction of a non-equilibrium almost stationary state, we give a new proof that the Kubo formula for the Hall conductivity remains valid beyond the linear response regime. In particular, we prove that, in quantum Hall systems and Chern insulators, the transverse response current is quantized up to any order in the strength of the inducing electric field. The latter is introduced as a perturbation to a periodic, spectrally gapped equilibrium Hamiltonian by means of a linear potential; existing proofs of the exactness of Kubo formula rely instead on a time-dependent magnetic potential. The result applies to both continuum and discrete crystalline systems modelling the quantum (anomalous) Hall effect.
description: 18 pages
A modern massive attempt to understand the evolutionary nature of Blue Supergiants in the Milky Way
Creators: name: De Burgos Sierra, Abel
name: Díaz, Sergio Simón
name: Urbaneja, Miguel Alejandro
Publisher: name: Zenodo
Year: 2022
Subjects: stars: massive stars, stars: evolution, stars: BSgs, techniques : spectroscopy, mission: Gaia, mission : TESS

description: Empirical constraints are master keys for testing theoretical evolutionary model predictions. Within the field of massive stars, the region in the Hertzsprung-Russell diagram between the main sequence and the core helium-burning phase filled by the Blue Supergiants (BSgs) is particularly important as it sets several important constraints to the evolutionary models. So far, we are missing from a full quantitative spectroscopic study of a sample of BSgs large enough to be statistically significant and, as far as possible, without observational biases. In this poster, we present results from a Quantitative Spectroscopic Analysis of a sample of ~500 Galactic BSgs for which we have derived the spectroscopic parameters.
Diffusion of a Janus nanoparticle in an explicit solvent: A molecular dynamics simulation study
Creators: name: Kharazmi, Ali
name: Priezjev, Nikolai V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Molecular dynamics simulations are carried out to study the translational and rotational diffusion of a single Janus particle immersed in a dense Lennard-Jones fluid. We consider a spherical particle with two hemispheres of different wettability. The analysis of the particle dynamics is based on the time-dependent orientation tensor, particle displacement, as well as the translational and angular velocity autocorrelation functions. It was found that both translational and rotational diffusion coefficients increase with decreasing surface energy at the nonwetting hemisphere, provided that the wettability of the other hemisphere remains unchanged. We also observed that in contrast to homogeneous particles, the nonwetting hemisphere of the Janus particle tends to rotate in the direction of the displacement vector during the rotational relaxation time.
description: Web reference added for animations:http://www.wright.edu/~nikolai.priezjev/janus/janus.html
Gaussian Process Based Bayesian Semiparametric Quantitative Trait Loci Interval Mapping
Creators: name: Hoeschele, Ina
name: Cheng, Fuxia
name: Huang, Hanwen
name: Zou, Fei
name: Zhou, Haibo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: In linkage analysis, it is often necessary to include covariates such as age or weight to increase power or avoid spurious false positive findings. However, if a covariate term in the model is specified incorrectly (e.g., a quadratic term misspecified as a linear term), then the inclusion of the covariate may adversely affect power and accuracy of the identification of Quantitative Trait Loci (QTL). Furthermore, some covariates may interact with each other in a complicated fashion. We implement semiparametric models for single and multiple QTL mapping. Both mapping methods include an unspecified function of any covariate found or suspected to have a more complex than linear but unknown relationship with the response variable. They also allow for interactions among different covariates. This analysis is performed in a Bayesian inference framework using Markov chain Monte Carlo. The advantages of our methods are demonstrated via extensive simulations and real data analysis.