cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thermal rectification in mass-asymmetric one-dimensional anharmonic oscillator lattices with and without a ballistic spacer
Creators: name: Romero-Bastida, M
name: Martínez-Torres, Brandon Armando
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we perform a systematic analysis of various structural parameters that have influence on the thermal rectification effect, i.e. asymmetrical heat flow, and the negative differential thermal resistance -- reduction of the heat flux as the applied thermal bias is increased -- present in a one-dimensional, segmented mass-graded system consisting of a coupled nearest-neighbor harmonic oscillator lattice (ballistic spacer) and two diffusive leads (modeled by a substrate potential) attached to the lattice at both boundaries. At variance with previous works, we consider the size of the spacer as smaller than that of the leads. Also considered is the case where the leads are connected along the whole length of the oscillator lattice; that is, in the absence of the ballistic spacer. Upon variation of the system's parameters it was determined that the performance of the device, as quantified by the spectral properties, is largely enhanced in the absence of the ballistic spacer for the small system-size limit herein considered.
description: 19 pages, 9 figures, single column format
Taiwan Axion Search Experiment with Haloscope: Designs and operations
Creators: name: Chang, Hsin
name: Chang, Jing-Yang
name: Chang, Yi-Chieh
name: Chang, Yu-Han
name: Chang, Yuan-Hann
name: Chen, Chien-Han
name: Chen, Ching-Fang
name: Chen, Kuan-Yu
name: Chen, Yung-Fu
name: Chiang, Wei-Yuan
name: Chien, Wei-Chen
name: Doan, Hien Thi
name: Hung, Wei-Cheng
name: Kuo, Watson
name: Lai, Shou-Bai
name: Liu, Han-Wen
name: OuYang, Min-Wei
name: Wu, Ping-I
name: Yu, Shin-Shan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report on a holoscope axion search experiment near $19.6\ {\rm μeV}$ from the TASEH collaboration. The experiment is carried out via a frequency-tunable cavity detector with a volume $V = 0.234\ {\rm liter}$ in a magnetic field $B_0 = 8\ {\rm T}$. With a signal receiver that has a system noise temperature $T_{\rm sys} \cong 2.2\ {\rm K}$ and experiment time about 1 month, the search excludes values of the axion-photon coupling constant $g_{\rm aγγ} \gtrsim 8.1 \times 10^{-14} \ {\rm GeV}^{-1}$, a factor of 11 above the KSVZ model, at the 95\% confidence level in the mass range of $19.4687-19.8436\ {\rm μeV}$. We present the experimental setup and procedures to accomplish this search.
description: 16 pages, 14 figures, 3 tables
Work-life balance and its associated factors duringwork from home among telecommunicationcompany employees
Creators: name: Nicha Wongkeereepiboon
name: Jinjuta Panumasvivat
name: Jate Ratanachina
name: Wiroj Jiamjarasrangsi
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2023
Subjects: Associated factors
work-life balance
work from home

description: Journal of Medical Bioscience, 5, 1, 01-011
User stories ODISSEI Portal
Creators: name: Van Der Meer, Lucas
name: Emery, Tom
Publisher: name: Zenodo
Year: 2020
Subjects: Data infrastructure
Portal
Metadata
Findability
Interoperability

description: This document lists the user stories for the ODISSEI Portal, meant in preparation for its development. The Portal will be developed between 2020 and 2024 by ODISSEI, the Dutch national infrastructure for the social sciences (odissei-data.nl). For questions, please contact info@odissei-data.nl. The ODISSEI Portal refers to the whole of the following three parts: External (meta)data suppliers (DANS EASY, CBS Microdata, SHARE, ESS...).. An interface to find datasets; the ODISSEI dataverse instance (developed by DANS) and the Social Science semantic prototype (developed by VU). For this purpose the Portal team will improve the search function, where the challenge lies in the semantic tuning and harmonisation of the metadata of the large number of different datasets. Data node (a better name is data manager, data broker, or data notary), a middleware that can facilitate a data access request between the user, data owner and analysis environment (e.g. ODISSEI Secure Supercomputer, SURF Research Cloud, Data Exchange, Google Drive, the researcher’s own desktop computer).
Infrared study of H1743-322 in outburst: a radio-quiet and NIR-dim microquasar
Creators: name: Chaty, S.
name: Arjonilla, A. J. Muñoz
name: Dubus, G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The X-ray binary, black hole candidate, and microquasar H1743-322 exhibited a series of X-ray outbursts between 2003 and 2008. We took optical/infrared (OIR) observations with the ESO/NTT telescope during 3 of these outbursts (2003, 2004, and 2008), to study its spectral energy distribution (SED). We detect rapid flares of duration ~5 mn in the high time-resolution IR lightcurve. We identify H and He emission lines in the IR spectra, coming from the accretion disk. The IR SED exhibits the spectral index typically associated with the X-ray high, soft state in our observations taken during the 2003 and 2004 outbursts, while the index changes to one that is typical of the X-ray low, hard state during the 2008 outburst. During this last outburst, we detected a change of slope in the NIR spectrum between the J and Ks bands, where the JH part is characteristic of an optically thick disk emission, while the HKs part is typical of optically thin synchrotron emission. Furthermore, the comparison of our IR data with radio and X-ray data shows that H1743-322 exhibits a faint jet both in radio and NIR domains. Finally, we suggest that the companion star is a late-type main sequence star located in the Galactic bulge. These OIR photometric and spectroscopic observations of the microquasar H1743-322, the first of this source to be published in a broad multiwavelength context, allow us to unambiguously identify two spectra of different origins in the OIR domain, evolving from optically thick thermal emission to optically thin synchrotron emission toward longer wavelengths. Comparing these OIR observations with other black hole candidates suggests that H1743-322 behaves like a radio-quiet and NIR-dim black hole in the low, hard state. This study will be useful when quantitatively comparing the overall contribution of the compact jet and accretion flow in the energy budget of microquasars.
description: accepted in A&A, 9 pages, 7 figures, 3 tables, abstract has been reduced to comply with arXiv requirements
Bias and Priors in Machine Learning Calibrations for High Energy Physics
Creators: name: Gambhir, Rikab
name: Nachman, Benjamin
name: Thaler, Jesse
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Machine learning offers an exciting opportunity to improve the calibration of nearly all reconstructed objects in high-energy physics detectors. However, machine learning approaches often depend on the spectra of examples used during training, an issue known as prior dependence. This is an undesirable property of a calibration, which needs to be applicable in a variety of environments. The purpose of this paper is to explicitly highlight the prior dependence of some machine learning-based calibration strategies. We demonstrate how some recent proposals for both simulation-based and data-based calibrations inherit properties of the sample used for training, which can result in biases for downstream analyses. In the case of simulation-based calibration, we argue that our recently proposed Gaussian Ansatz approach can avoid some of the pitfalls of prior dependence, whereas prior-independent data-based calibration remains an open problem.
description: 17 pages, 7 figures, code available at https://github.com/hep-lbdl/calibrationpriors v2: Minor updates to match journal version
Pseudorapidity distribution of charged hadrons in proton-proton collisions at sqrt(s) = 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The pseudorapidity distribution of charged hadrons in pp collisions at sqrt(s) =13 TeV is measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. The yield of primary charged long-lived hadrons produced in inelastic pp collisions is determined in the central region of the CMS pixel detector (abs(eta)<2) using both hit pairs and reconstructed tracks. For central pseudorapidities (abs(eta)<0.5), the charged-hadron multiplicity density is dN/d(eta)[charged,abs(eta) < 0.5] = 5.49 +/- 0.01 (stat) +/- 0.17 (sys), a value obtained by combining the two methods. The result is compared to predictions from Monte Carlo event generators and to similar measurements made at lower collision energies.
description: Version published in Phys. Lett. B
On variance estimate for covariate adjustment by propensity score analysis: On variance estimate for covariate adjustment by propensity score analysis
Creators: name: Zou, Baiming
name: Zou, Fei
name: Koch, Gary G.
name: Tighe, Patrick J.
name: Shuster, Jonathan J.
name: Zhou, Haibo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Propensity score (PS) methods have been used extensively to adjust for confounding factors in the statistical analysis of observational data in comparative effectiveness research. There are four major PS-based adjustment approaches: PS matching, PS stratification, covariate adjustment by PS, and PS-based inverse probability weighting (IPW). Though covariate adjustment by PS is one of the most frequently used PS-based methods in clinical research, the conventional variance estimation of the treatment effects estimate under covariate adjustment by PS is biased. As Stampf et al. have shown, this bias in variance estimation is likely to lead to invalid statistical inference and could result in erroneous public health conclusions (e.g. food and drug safety, adverse events surveillance). To address this issue, we propose a two-stage analytic procedure to develop a valid variance estimator for the covariate adjustment by PS analysis strategy. We also carry out a simple empirical bootstrap resampling scheme. Both proposed procedures are implemented in an R function for public use. Extensive simulation results demonstrate the bias in the conventional variance estimator, and show that both proposed variance estimators offer valid estimates for the true variance and they are robust to complex confounding structures. The proposed methods are illustrated for a post-surgery pain study.
Time-dependent community structure in legislation cosponsorship networks in the Congress of the Republic of Peru
Creators: name: Lee, Sang Hoon
name: Magallanes, José Manuel
name: Porter, Mason A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We study community structure in time-dependent legislation cosponsorship networks in the Peruvian Congress, and we compare them briefly to legislation cosponsorship networks in the US Senate. To study these legislatures, we employ a multilayer representation of temporal networks in which legislators in each layer are connected to each other with a weight that is based on how many bills they cosponsor. We then use multilayer modularity maximization to detect communities in these networks. From our computations, we are able to capture power shifts in the Peruvian Congress during 2006--2011. For example, we observe the emergence of 'opportunists', who switch from one community to another, as well as cohesive legislative communities whose initial component legislators never change communities. Interestingly, many of the opportunists belong to the group that won the majority in Congress.
description: 19 pages, 8 figures, 3 tables
The rapid enrollment design for Phase I clinical trials: The Rapid Enrollment Design for Phase I Clinical Trials
Creators: name: Wang, Yunfei
name: Foster, Matthew C.
name: Ivanova, Anastasia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: We propose a dose-finding design for Phase I oncology trials where each new patient is assigned to the dose most likely to be the target dose given observed data. The main model assumption is that the dose-toxicity curve is non-decreasing. This method is beneficial when it is desirable to assign a patient to a dose as soon as the patient is enrolled into a study. To prevent assignments to doses with limited toxicity information in fast accruing trials we propose a conservative rule that assigns temporary fractional toxicities to patients still in follow-up. We also recommend using a safety rule with any dose-finding method.
Emerging Immersive Communication Systems: Overview, Taxonomy, and Good Practises for QoE Assessment
Creators: name: Pérez, Pablo
name: Gonzalez-Sosa, Ester
name: Gutiérrez, Jesús
name: García, Narciso
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Several technological and scientific advances have been achieved recently in the fields of immersive systems, which are offering new possibilities to applications and services in different communication domains, such as entertainment, virtual conferencing, working meetings, social relations, healthcare, and industry. Users of these immersive technologies can explore and experience the stimuli in a more interactive and personalized way than previous technologies. Thus, considering the new technological challenges related to these systems and the new perceptual dimensions and interaction behaviors involved, a deep understanding of the users' Quality of Experience is required to satisfy their demands and expectations. In this sense, it is essential to foster the research on evaluating the QoE of immersive communication systems, since this will provide useful outcomes to optimize them and to identify the factors that can deteriorate the user experience. With this aim, subjective tests are usually performed following standard methodologies, which are designed for specific technologies and services. Although numerous user studies have been already published, there are no recommendations or standards that define common testing methodologies to be applied to evaluate immersive communication systems, such as those developed for images and video. Therefore, a revision of the QoE evaluation methods designed for previous technologies is required to develop robust and reliable methodologies for immersive communication systems. Thus, the objective of this paper is to provide an overview of existing immersive communication systems and related user studies, which can help on the definition of basic guidelines and testing methodologies to be used when performing user tests of immersive communication systems, such as 360-degree video-based telepresence, avatar-based social VR, cooperative AR, etc.
description: Frontiers in Signal Processing
The Potential for Mega-Farms to Transform Malawian Agriculture
Creators: name: Gondwe, Anderson
name: Nankwenya, Bonface
name: Jayne, T.S.
name: Burke, William J.
name: Muyanga, Milu
name: Chadza, William
name: Chiwaula, Levison
name: Gondwe, Anderson
name: Nankwenya, Bonface
name: Jayne, T.S.
name: Burke, William J.
name: Muyanga, Milu
name: Chadza, William
name: Chiwaula, Levison
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agricultural and Food Policy
subject: Mega-farms
subject: Food Security
subject: Food Policy
subject: Agriculture Policy
subject: Export Strategy
subject: Malawi
subject: Africa

description: Mega farms have the potential to transform Malawian agriculture. While the establishment of new mega-farms is supported, strengthening existing large farms by enhancing their human resource capacity, promoting sustainable agricultural practices, and addressing other issues that limit productivity will generate quick wins. It is also important for Government to put in place deliberate policies that will promote meaningful interaction between mega-farms and surrounding smallholder farmers and communities. The management and governance of the mega-farms should be private sector-led, with Government providing supporting infrastructure and conducive marketing and trade policies. Furthermore, the choice of the focus crops or livestock on the mega-farms should be consistent with suitable climatic, soil, and other ecological factors.
Classical Cosmological Collider Physics and Primordial Features
Creators: name: Chen, Xingang
name: Ebadi, Reza
name: Kumar, Soubhik
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Features in the inflationary landscape can inject extra energies to inflation models and produce on-shell particles with masses much larger than the Hubble scale of inflation. This possibility extends the energy reach of the program of cosmological collider physics, in which signals associated with these particles are generically Boltzmann-suppressed. We study the mechanisms of this classical cosmological collider in two categories of primordial features. In the first category, the primordial feature is classical oscillation, which includes the case of coherent oscillation of a massive field and the case of oscillatory features in the inflationary potential. The second category includes any sharp feature in the inflation model. All these classical features can excite unsuppressed quantum modes of other heavy fields which leave observational signatures in primordial non-Gaussianities, including the information about the particle spectra of these heavy degrees of freedom.
description: 49 pages, 14 figures. Changes in v2: clarifications added. Matches the version published in JCAP
Rotating elastic string loops in flat and black hole spacetimes: stability, cosmic censorship and the Penrose process
Creators: name: Natario, Jose
name: Queimada, Leonel
name: Vicente, Rodrigo
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 74K05, 83C10, 83C55, 83C57, 83C75

description: We rederive the equations of motion for relativistic strings, that is, one-dimensional elastic bodies whose internal energy depends only on their stretching, and use them to study circular string loops rotating in the equatorial plane of flat and black hole spacetimes. We start by obtaining the conditions for equilibrium, and find that: (i) if the string's longitudinal speed of sound does not exceed the speed of light then its radius when rotating in Minkowski's spacetime is always larger than its radius when at rest; (ii) in Minkowski's spacetime, equilibria are linearly stable for rotation speeds below a certain threshold, higher than the string's longitudinal speed of sound, and linearly unstable for some rotation speeds above it; (iii) equilibria are always linearly unstable in Schwarzschild's spacetime. Moreover, we study interactions of a rotating string loop with a Kerr black hole, namely in the context of the weak cosmic censorship conjecture and the Penrose process. We find that: (i) elastic string loops that satisfy the null energy condition cannot overspin extremal black holes; (ii) elastic string loops that satisfy the dominant energy condition cannot increase the maximum efficiency of the usual particle Penrose process; (iii) if the dominant energy condition (but not the weak energy condition) is violated then the efficiency can be increased. This last result hints at the interesting possibility that the dominant energy condition may underlie the well known upper bounds for the efficiencies of energy extraction processes (including, for example, superradiance).
description: 32 pages, 6 figures; v2: minor improvements; v3: small changes, matches final published version; v4: typos in the references fixed; v5: missing exponent added to Eq. (88)
Adaptation of the Kaufman Assessment Battery for Children—2nd edition (KABC-II) to assess school-age neurodevelopment in rural Zimbabwe
Creators: name: Piper, Joe
name: Ntozini, Robert
name: Prendergast, Andrew
name: Mwapaura, Marian
name: Chidhanguro, Dzivaidzo
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Public Health
subject: Maternal and Child Health
subject: Life Sciences
subject: Neuroscience and Neurobiology
subject: Developmental Neuroscience
subject: Medicine and Health Sciences

description: There remains an urgent need for neurodevelopment assessment tools that can be applied in low-resource settings, where over 250 million children remain at risk of poor cognitive development. This project describes the adaptation of two subtests (pattern reasoning and story completion) within the Kaufman Assessment Battery for Children--2nd edition (KABC-II) for use in rural Zimbabwean children aged 7 years, both within the planning domain.
Accounting for competing risks in randomized controlled trials: a review and recommendations for improvement
Creators: name: Austin, Peter C.
name: Fine, Jason P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: In studies with survival or time-to-event outcomes, a competing risk is an event whose occurrence precludes the occurrence of the primary event of interest. Specialized statistical methods must be used to analyze survival data in the presence of competing risks. We conducted a review of randomized controlled trials with survival outcomes that were published in high-impact general medical journals. Of 40 studies that we identified, 31 (77.5%) were potentially susceptible to competing risks. However, in the majority of these studies, the potential presence of competing risks was not accounted for in the statistical analyses that were described. Of the 31 studies potentially susceptible to competing risks, 24 (77.4%) reported the results of a Kaplan-Meier survival analysis, while only five (16.1%) reported using cumulative incidence functions to estimate the incidence of the outcome over time in the presence of competing risks. The former approach will tend to result in an overestimate of the incidence of the outcome over time, while the latter approach will result in unbiased estimation of the incidence of the primary outcome over time. We provide recommendations on the analysis and reporting of randomized controlled trials with survival outcomes in the presence of competing risks. © 2017 The Authors. Statistics in Medicine published by John Wiley & Sons Ltd.
Orchestrated Session Compliance
Creators: name: Barbanera, Franco
name: van Bakel, Steffen
name: de'Liguoro, Ugo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.1.2; F.3.1; F.3.3

description: We investigate the notion of orchestrated compliance for client/server interactions in the context of session contracts. Devising the notion of orchestrator in such a context makes it possible to have orchestrators with unbounded buffering capabilities and at the same time to guarantee any message from the client to be eventually delivered by the orchestrator to the server, while preventing the server from sending messages which are kept indefinitely inside the orchestrator. The compliance relation is shown to be decidable by means of 1) a procedure synthesising the orchestrators, if any, making a client compliant with a server, and 2) a procedure for deciding whether an orchestrator behaves in a proper way as mentioned before.
description: In Proceedings ICE 2015, arXiv:1508.04595
linguistics_script
Creators: name: van Gijn, Rik
Publisher: name: figshare
Year: 2022
Subjects: subject: Linguistics
subject: FOS: Languages and literature
subject: 200406 Language in Time and Space (incl. Historical Linguistics, Dialectology)
subject: 200408 Linguistic Structures (incl. Grammar, Phonology, Lexicon, Semantics)

description: R script to replicate the visualizations and analyses based on the linguistic dataset
Symmetry breaking operators for strongly spherical reductive pairs
Creators: name: Frahm, Jan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 22E46 (Primary), 11F70, 53C30 (Secondary)

description: A real reductive pair $(G,H)$ is called strongly spherical if the homogeneous space $(G\times H)/{\rm diag}(H)$ is real spherical. This geometric condition is equivalent to the representation theoretic property that ${\rm dim\,Hom}_H(π|_H,τ)<\infty$ for all smooth admissible representations $π$ of $G$ and $τ$ of $H$. In this paper we explicitly construct for all strongly spherical pairs $(G,H)$ intertwining operators in ${\rm Hom}_H(π|_H,τ)$ for $π$ and $τ$ spherical principal series representations of $G$ and $H$. These so-called symmetry breaking operators depend holomorphically on the induction parameters and we further show that they generically span the space ${\rm Hom}_H(π|_H,τ)$. In the special case of multiplicity one pairs we extend our construction to vector-valued principal series representations and obtain generic formulas for the multiplicities between arbitrary principal series. As an application, we prove an early version of the Gross-Prasad conjecture for complex orthogonal groups, and also provide lower bounds for the dimension of the space of Shintani functions.
description: 58 pages, v2: final published version
Heri-Graphs: A Workflow of Creating Datasets for Multi-modal Machine Learning on Graphs of Heritage Values and Attributes with Social Media
Creators: name: Bai, Nan
name: Nourian, Pirouz
name: Luo, Renqian
name: Roders, Ana Pereira
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: E.1; J.4
subject: 91D30

description: Values (why to conserve) and Attributes (what to conserve) are essential concepts of cultural heritage. Recent studies have been using social media to map values and attributes conveyed by public to cultural heritage. However, it is rare to connect heterogeneous modalities of images, texts, geo-locations, timestamps, and social network structures to mine the semantic and structural characteristics therein. This study presents a methodological workflow for constructing such multi-modal datasets using posts and images on Flickr for graph-based machine learning (ML) tasks concerning heritage values and attributes. After data pre-processing using state-of-the-art ML models, the multi-modal information of visual contents and textual semantics are modelled as node features and labels, while their social relationships and spatiotemporal contexts are modelled as links in Multi-Graphs. The workflow is tested in three cities containing UNESCO World Heritage properties - Amsterdam, Suzhou, and Venice, which yielded datasets with high consistency for semi-supervised learning tasks. The entire process is formally described with mathematical notations, ready to be applied in provisional tasks both as ML problems with technical relevance and as urban/heritage study questions with societal interests. This study could also benefit the understanding and mapping of heritage values and attributes for future research in global cases, aiming at inclusive heritage management practices.
description: 28 pages, 6 figures, 12 tables. The data and models presented in this paper can be found in the following GitHub link: https://github.com/zzbn12345/Heri_Graphs
When null energy condition meets ADM mass
Creators: name: Yang, Run-Qiu
name: Li, Li
name: Cai, Rong-Gen
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We give a conjecture on the lower bound of the ADM mass $M$ by using the null energy condition. The conjecture includes a Penrose-like inequality $3M\geqκ\mathcal{A}/(4π)+\sqrt{\mathcal{A}/4π}$ and the Penrose inequality $ 2M\geq\sqrt{\mathcal{A}/{4π}}$ with $\mathcal{A}$ the event horizon area and $κ$ the surface gravity. Both the conjecture in the static spherically symmetric case and the Penrose inequality for a dynamical spacetime with spherical symmetry are proved by imposing the null energy condition. We then generalize the conjecture to a general dynamical spacetime. Our results raise a new challenge for the famous unsettled question in general relativity: in what general case can the null energy condition replace other energy conditions to ensure the Penrose inequality?
description: 7 pages, no figure
Practical recommendations for reporting Fine-Gray model analyses for competing risk data
Creators: name: Austin, Peter C.
name: Fine, Jason P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: In survival analysis, a competing risk is an event whose occurrence precludes the occurrence of the primary event of interest. Outcomes in medical research are frequently subject to competing risks. In survival analysis, there are 2 key questions that can be addressed using competing risk regression models: first, which covariates affect the rate at which events occur, and second, which covariates affect the probability of an event occurring over time. The cause‐specific hazard model estimates the effect of covariates on the rate at which events occur in subjects who are currently event‐free. Subdistribution hazard ratios obtained from the Fine‐Gray model describe the relative effect of covariates on the subdistribution hazard function. Hence, the covariates in this model can also be interpreted as having an effect on the cumulative incidence function or on the probability of events occurring over time. We conducted a review of the use and interpretation of the Fine‐Gray subdistribution hazard model in articles published in the medical literature in 2015. We found that many authors provided an unclear or incorrect interpretation of the regression coefficients associated with this model. An incorrect and inconsistent interpretation of regression coefficients may lead to confusion when comparing results across different studies. Furthermore, an incorrect interpretation of estimated regression coefficients can result in an incorrect understanding about the magnitude of the association between exposure and the incidence of the outcome. The objective of this article is to clarify how these regression coefficients should be reported and to propose suggestions for interpreting these coefficients.
Prediction of a narrow exotic hadronic state with quantum numbers $J^{PC}=0^{--}$
Creators: name: Ji, Teng
name: Dong, Xiang-Kun
name: Guo, Feng-Kun
name: Zou, Bing-Song
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Lots of charmonium-like structures have been observed in the last two decades. Most of them have quantum numbers that can be formed by a pair of charm and anticharm quarks, thus it is difficult to unambiguously identify the exotic ones among them. In this Letter, by exploiting heavy quark spin symmetry, we present a robust prediction of the hadronic molecular scenario, where the $ψ(4230),ψ(4360)$ and $ψ(4415)$ are identified as $D\bar D_1,D^*\bar D_1$ and $D^*\bar D^*_2$ bound states, respectively. We show that a flavor-neutral charmonium-like exotic state with quantum numbers $J^{PC}=0^{--}$, denoted as $ψ_0(4360)$, should exist as a $D^*\bar D_1$ bound state. The mass and width of the $ψ_0(4360)$} are predicted to be $(4366\pm18)$ MeV and less than 10 MeV, respectively. The $ψ_0(4360)$ is significant in two folds: no $0^{--}$ hadron has been observed so far, and a study of this state will enlighten the understanding of the mysterious vector mesons between 4.2 and 4.5 GeV, as well as the nature of previously observed exotic $Z_c$ and $P_c$ states. We propose that such an exotic state can be searched for in $e^+e^-\to ηψ_0(4360)$ and uniquely identified by measuring the angular distribution of the outgoing $η$ meson.
description: 7+3 pages, 7 figures, 2 tables; version to be appeared in PRL
Spin Hall effect driven by the spin magnetic moment current in Dirac materials
Creators: name: Chi, Zhendong
name: Qu, Guanxiong
name: Lau, Yong-Chang
name: Kawaguchi, Masashi
name: Fujimoto, Junji
name: Takanashi, Koki
name: Ogata, Masao
name: Hayashi, Masamitsu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spin Hall effect of a Dirac Hamiltonian system is studied using semiclassical analyses and the Kubo formula. In this system, the spin Hall conductivity is dependent on the definition of spin current. All components of the spin Hall conductivity vanish when spin current is defined as the flow of spin angular momentum. In contrast, the off-diagonal components of the spin Hall conductivity are non-zero and scale with the carrier velocity (and the effective $g$-factor) when spin current consists of the flow of spin magnetic moment. We derive analytical formula of the conductivity, carrier mobility and the spin Hall conductivity to compare with experiments. In experiments, we use Bi as a model system that can be characterized by the Dirac Hamiltonian. Te and Sn are doped into Bi to vary the electron and hole concentration, respectively. We find the spin Hall conductivity ($σ_\mathrm{SH}$) takes a maximum near the Dirac point and decreases with increasing carrier density ($n$). The sign of $σ_\mathrm{SH}$ is the same regardless of the majority carrier type. The spin Hall mobility, proportional to $σ_\mathrm{SH}/n$, increases with increasing carrier mobility with a scaling coefficient of $\sim$1.4. These features can be accounted for quantitatively using the derived analytical formula. The results demonstrate that the giant spin magnetic moment, with an effective $g$-factor that approaches 100, is responsible for the spin Hall effect in Bi.
Intrinsic Anomalous Thermal Hall Effect in the Unconventional Superconductor UTe2
Creators: name: Moriya, Yukiyasu
name: Matsushita, Taiki
name: Yamada, Masahiko G.
name: Mizushima, Takeshi
name: Fujimoto, Satoshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the intrinsic anomalous thermal Hall effect as an effective probe of the order parameters of non-unitary pairing states of the putative spin-triplet superconductor UTe$_2$. We consider all symmetry-allowed non-unitary states under magnetic fields comprehensively, and calculate the anomalous Hall conductivity arising from time-reversal symmetry-breaking Weyl point nodes of the gap functions, assuming three types of Fermi surfaces; ellipsoid-shaped, cylinder-shaped, and ring-shaped ones, which are predicted by previous band calculations. We find the nonzero anomalous thermal Hall conductivity in the certain ratio of the two irreducible representations. The results may be utilized for future exploration of pairing states of UTe$_2$.
Search for pseudoscalar-mediated WIMPs in $t \rightarrow c$ transitions with missing energy
Creators: name: Jia, Lian-Bao
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The recent astronomical observation of GeV gamma-ray excess from the Galactic Center was suggested due to a $b \bar{b}$ mode in tens GeV WIMP (weakly interacting massive particle) pair annihilations, and this mode was also explored by the new dwarf galaxy observation. Considering the case the WIMP pair mass below top quark mass, a pseudoscalar $ϕ$ is studied in this article, which mediates the interactions between the standard model fermions and fermionic WIMPs, and neutral flavor-changing interactions in standard model fermion sectors. The $b \bar{b}$ mode is favored in WIMP pair annihilations, while the WIMP-nucleus scattering is highly suppressed in direct detection. Alternative schemes of $t \rightarrow c$ decay and single top production are employed to search WIMPs. Assuming the mass of WIMP around 5-60 GeV and with the reasonable inputs by the constraints, the branching ratio $\mathcal {B}_{t\rightarrow c \barχ χ}$ of a top quark decaying into a charm quark and a WIMP pair is derived of order $10^{-8} - 10^{-5}$, thus careful studies in the future on top-physics may help to gain a better understanding of WIMPs.
description: 14 pages, 3 figures, 2 tables, discussion and reference added, to appear at PRD
The geometry of random walk isomorphism theorems
Creators: name: Bauerschmidt, Roland
name: Helmuth, Tyler
name: Swan, Andrew
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The classical random walk isomorphism theorems relate the local times of a continuous-time random walk to the square of a Gaussian free field. A Gaussian free field is a spin system that takes values in Euclidean space, and this article generalises the classical isomorphism theorems to spin systems taking values in hyperbolic and spherical geometries. The corresponding random walks are no longer Markovian: they are the vertex-reinforced and vertex-diminished jump processes. We also investigate supersymmetric versions of these formulas. Our proofs are based on exploiting the continuous symmetries of the corresponding spin systems. The classical isomorphism theorems use the translation symmetry of Euclidean space, while in hyperbolic and spherical geometries the relevant symmetries are Lorentz boosts and rotations, respectively. These very short proofs are new even in the Euclidean case. Isomorphism theorems are useful tools, and to illustrate this we present several applications. These include simple proofs of exponential decay for spin system correlations, exact formulas for the resolvents of the joint processes of random walks together with their local times, and a new derivation of the Sabot--Tarrès formula for the limiting local time of the vertex-reinforced jump process.
description: Accepted version
Statistical inferences for data from studies conducted with an aggregated multivariate outcome-dependent sample design: Aggregated Multivariate Outcome-dependent Sample Design
Creators: name: Zhou, Haibo
name: Longnecker, Matthew P.
name: Lu, Tsui-Shan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Outcome-dependent sampling (ODS) scheme is a cost-effective sampling scheme where one observes the exposure with a probability that depends on the outcome. The well-known such design is the case-control design for binary response, the case-cohort design for the failure time data and the general ODS design for a continuous response. While substantial work has been done for the univariate response case, statistical inference and design for the ODS with multivariate cases remain under-developed. Motivated by the need in biological studies for taking the advantage of the available responses for subjects in a cluster, we propose a multivariate outcome dependent sampling (Multivariate-ODS) design that is based on a general selection of the continuous responses within a cluster. The proposed inference procedure for the Multivariate-ODS design is semiparametric where all the underlying distributions of covariates are modeled nonparametrically using the empirical likelihood methods. We show that the proposed estimator is consistent and developed the asymptotically normality properties. Simulation studies show that the proposed estimator is more efficient than the estimator obtained using only the simple-random-sample portion of the Multivariate-ODS or the estimator from a simple random sample with the same sample size. The Multivariate-ODS design together with the proposed estimator provides an approach to further improve study efficiency for a given fixed study budget. We illustrate the proposed design and estimator with an analysis of association of PCB exposure to hearing loss in children born to the Collaborative Perinatal Study.
Dissipation in noisy chemical networks: The role of deficiency
Creators: name: Polettini, Matteo
name: Wachtel, Artur
name: Esposito, Massimiliano
Publisher: name: arXiv
Year: 2015
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study the effect of intrinsic noise on the thermodynamic balance of complex chemical networks subtending cellular metabolism and gene regulation. A topological network property called deficiency, known to determine the possibility of complex behavior such as multistability and oscillations, is shown to also characterize the entropic balance. In particular, only when deficiency is zero does the average stochastic dissipation rate equal that of the corresponding deterministic model, where correlations are disregarded. In fact, dissipation can be reduced by the effect of noise, as occurs in a toy model of metabolism that we employ to illustrate our findings. This phenomenon highlights that there is a close interplay between deficiency and the activation of new dissipative pathways at low molecule numbers.
description: 10 Pages, 6 figures
Targeted use of growth mixture modeling: a learning perspective: Targeted use of growth mixture modeling: a learning perspective
Creators: name: Wang, Chen-Pin
name: Horwitz, Sarah McCue
name: Fristad, Mary A.
name: Arnold, L. Eugene
name: Findling, Robert L.
name: Hastie, Trevor J.
name: Youngstrom, Eric A.
name: Jo, Booil
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: From the statistical learning perspective, this paper shows a new direction for the use of growth mixture modeling (GMM), a method of identifying latent subpopulations that manifest heterogeneous outcome trajectories. In the proposed approach, we utilize the benefits of the conventional use of GMM for the purpose of generating potential candidate models based on empirical model fitting, which can be viewed as unsupervised learning. We then evaluate candidate GMM models on the basis of a direct measure of success; how well the trajectory types are predicted by clinically and demographically relevant baseline features, which can be viewed as supervised learning. We examine the proposed approach focusing on a particular utility of latent trajectory classes, as outcomes that can be used as valid prediction targets in clinical prognostic models. Our approach is illustrated using data from the Longitudinal Assessment of Manic Symptoms (LAMS) study.
Human rights violation reports in English from 2002 to 2013
Creators: name: Shakoor, Abdul
name: Ali, Sajjad
name: Irfan, Muhammad
name: Muhammad, Jan
name: Khan, Abid
Publisher: name: University of Limerick
Year: 2022
Subjects: Language, communication and culture

description: This presents the coverage of violation fundamental rights of women and children in newspaper,because it has been observed that fundamental rights violation coverage is more than awareness of fundamental rights to control the issue. In this regard, the researcher applied quantitative content analysis, whereas purposive sampling method was used for data collection. Data was collected from 2002 to 2013 from daily Dawn and daily Jang through coding sheet. The study revealed that fundamental right violation was more covered by both newspaper as well as more fundamental right violation has been done democratic regime of Asif Ali Zardari (2008-2013) instead of dictatorial regime of Perviz Musharaf (2002-2008). The findings disclosed that violation done less in dictatorial regime because of army control and pressure as well as law and order situation were control at the time as compare to democratic regime. Both newspaper covered the issue on priority bases to highlight the fundamental right violation in the country.
Absolute Triangulation Algorithms for Space Exploration
Creators: name: Henry, Sebastien
name: Christian, John A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Images are an important source of information for spacecraft navigation and for three-dimensional reconstruction of observed space objects. Both of these applications take the form of a triangulation problem when the camera has a known attitude and the measurements extracted from the image are line of sight (LOS) directions. This work provides a comprehensive review of the history and theoretical foundations of triangulation. A variety of classical triangulation algorithms are reviewed, including a number of suboptimal linear methods (many LOS measurements) and the optimal method of Hartley and Sturm (only two LOS measurements). It is shown that the optimal many-measurement case may be solved without iteration as a linear system using the new Linear Optimal Sine Triangulation (LOST) method. Both LOST and the polynomial method of Hartley and Sturm provide the same result in the case of only two measurements. The various triangulation algorithms are assessed with a few numerical examples, including planetary terrain relative navigation, angles-only optical navigation at Uranus, 3-D reconstruction of Notre-Dame de Paris, and angles-only relative navigation.
A sum involving the greatest-integer function
Creators: name: Richman, David Ross
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 26D15 (Primary), 40A25, 11A99 (Secondary)

description: We determine properties of the set of values of $ [nx] - ([x]/1 + [2x]/2 + \cdots + [nx]/x) $ as $n$ and $x$ vary.
description: 13 pages, accepted for publication in INTEGERS