cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
KETJU -- resolving small-scale supermassive black hole dynamics in GADGET-4
Creators: name: Mannerkoski, Matias
name: Rawlings, Alexander
name: Johansson, Peter H.
name: Naab, Thorsten
name: Rantala, Antti
name: Springel, Volker
name: Irodotou, Dimitrios
name: Liao, Shihong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the new public version of the KETJU supermassive black hole (SMBH) dynamics module, as implemented into GADGET-4. KETJU adds a small region around each SMBH where the dynamics of the SMBHs and stellar particles are integrated using an algorithmically regularised integrator instead of the leapfrog integrator with gravitational softening used by GADGET-4. This enables modelling SMBHs as point particles even during close interactions with stellar particles or other SMBHs, effectively removing the spatial resolution limitation caused by gravitational softening. KETJU also includes post-Newtonian corrections, which allows following the dynamics of SMBH binaries to sub-parsec scales and down to tens of Schwarzschild radii. Systems with multiple SMBHs are also supported, with the code also including the leading non-linear cross terms that appear in the post-Newtonian equations for such systems. We present tests of the code showing that it correctly captures, at sufficient mass resolution, the sinking driven by dynamical friction and binary hardening driven by stellar scattering. We also present an example application demonstrating how the code can be applied to study the dynamics of SMBHs in mergers of multiple galaxies and the effect they have on the properties of the surrounding galaxy. We expect that the presented KETJU SMBH dynamics module can also be straightforwardly incorporated into other codes similar to GADGET-4, which would allow coupling small-scale SMBH dynamics to the rich variety of galactic physics models that exist in the literature.
description: 21 pages, 19 figures. Code available from https://www.mv.helsinki.fi/home/phjohans/ketju
Effects of Bookkeeping on Performance of Local Identity Farmers in Maha Sarakham Province
Creators: name: Piyawan Yangkham
name: Masaunjik, Nava
name: Amorn Thotham
name: Kotchanipa Wanichkittikul
name: Thirasak Kiangkhwa
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Bookkeeping
performance
farmers

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 518-531
The Development of Buddhist and Cultural Tourism along Luang Por Derm's Learning Path to Promote Lifelong Learning
Creators: name: Phatcharapha Singtanasarn
name: Kritinn Panpairojn
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Tourism resources
buddhist and cultural tourism
learning path of luang por Derm's
lifelong learning

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 547-564
(103028) Edward Frederick Rees
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.
Absorption spectroscopy of GRB160410A: The first complete study of the ISM of a short GRB
Creators: name: Agüí Fernández, José Feliciano
Publisher: name: Zenodo
Year: 2022

description: Short gamma-ray bursts (sGRBs) are produced on the coalescence of two compact objects such as two neutron stars. These cataclismic events release a large amount of energy in gravitational waves during the coalescence event to a single compact object. In this poster, we present the results of the study of GRB 160410A and GRB 201221D, two short GRBs that present very different environments.
(103026) Honora Flinn
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.
(103025) John Geary
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.
Tracking Live Fish from Low-Contrast and Low-Frame-Rate Stereo Videos
Creators: name: Chuang, Meng-Che
name: Hwang, Jenq-Neng
name: Williams, Kresimir
name: Towler, Richard
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Non-extractive fish abundance estimation with the aid of visual analysis has drawn increasing attention. Unstable illumination, ubiquitous noise and low frame rate video capturing in the underwater environment, however, make conventional tracking methods unreliable. In this paper, we present a multiple fish tracking system for low-contrast and low-frame-rate stereo videos with the use of a trawl-based underwater camera system. An automatic fish segmentation algorithm overcomes the low-contrast issues by adopting a histogram backprojection approach on double local-thresholded images to ensure an accurate segmentation on the fish shape boundaries. Built upon a reliable feature-based object matching method, a multiple-target tracking algorithm via a modified Viterbi data association is proposed to overcome the poor motion continuity and frequent entrance/exit of fish targets under low-frame-rate scenarios. In addition, a computationally efficient block-matching approach performs successful stereo matching, which enables an automatic fish-body tail compensation to greatly reduce segmentation error and allows for an accurate fish length measurement. Experimental results show that an effective and reliable tracking performance for multiple live fish with underwater stereo cameras is achieved.
description: 14 pages, 14 figures, 6 tables
Sample Size Determination Techniques for Behavioral Sciences Research
Creators: name: Rungson Chomeya
name: Sombat Tayraukham
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Research methodology
statistics for research
social sciences research
hypothesis testing

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 565-583
Exploring Robust Architectures for Deep Artificial Neural Networks
Creators: name: Waqas, Asim
name: Rasool, Ghulam
name: Farooq, Hamza
name: Bouaynaya, Nidhal C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The architectures of deep artificial neural networks (DANNs) are routinely studied to improve their predictive performance. However, the relationship between the architecture of a DANN and its robustness to noise and adversarial attacks is less explored. We investigate how the robustness of DANNs relates to their underlying graph architectures or structures. This study: (1) starts by exploring the design space of architectures of DANNs using graph-theoretic robustness measures; (2) transforms the graphs to DANN architectures to train/validate/test on various image classification tasks; (3) explores the relationship between the robustness of trained DANNs against noise and adversarial attacks and the robustness of their underlying architectures estimated via graph-theoretic measures. We show that the topological entropy and Olivier-Ricci curvature of the underlying graphs can quantify the robustness performance of DANNs. The said relationship is stronger for complex tasks and large DANNs. Our work will allow autoML and neural architecture search community to explore design spaces of robust and accurate DANNs.
description: 27 pages, 16 figures
(103024) Elizabeth Geary
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 the circularity of PSR B0818-41's carousel
Creators: name: McSweeney, Samuel J.
name: Smith, Lisa
name: Bhat, N. D. Ramesh
name: Wright, Geoff
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The phenomenon of sub-pulse drifting is an important single-pulse phenomenon that can potentially provide important insights into the elusive radio emission mechanism in pulsars. We analyze the frequency behaviour of the single pulses of B0818-41, observed from 300 to 500 MHz (Band 3 of the uGMRT), and compare it to the evolution of the average profile to place constraints on the geometry of the pulsar's emission beam. We show that a circular carousel of discrete beamlets, where each beamlet has radial symmetry, is not consistent with the observed behaviour, and describe an alternative, consistent range of possible elliptical carousel geometries. We also combine the uGMRT data with some archival MWA observations and several other published profiles to characterize the profile evolution across a frequency range spanning ~170 MHz to ~1.4 GHz.
(103023) Hester Bishop
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 Dense Filamentary Giant Molecular Cloud G23.0-0.4: Birthplace of Ongoing Massive Star Formation
Creators: name: Su, Yang
name: Zhang, Shaobo
name: Shao, Xiangjun
name: Yang, Ji
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present observations of 1.5 square degree maps of the 12CO, 13CO, and C18O (J=1-0) emission toward the complex region of the supernova remnant (SNR) W41 and SNR G22.7-0.2. A massive (~5E5Msun), large (~84x15 pc), and dense (~10E3 cm^-3) giant molecular cloud (GMC), G23.0-0.4 with VLSR~77 km/s, is found to be adjacent to the two SNRs. The GMC displays a filamentary structure approximately along the Galactic plane. The filamentary structure of the dense molecular gas, traced by C18O (J=1-0) emission, is also coincident well with the distribution of the dust-continuum emission in the direction. Two dense massive MC clumps, two 6.7 GHz methanol masers, and one HII/SNR complex, associated with the 77 km/s GMC G23.0-0.4, are aligned along the filamentary structure, indicating the star forming activity within the GMC. These sources have periodic projected spacing of 0.18-0.26degree along the giant filament, which is consistent well with the theoretical predictions of 0.22degree. It indicates that the turbulence seems to dominate the fragmentation process of the dense gaseous filament on large scale. The established 4.4 kpc distance of the GMC and the long dense filament traced by C18O emission, together with the rich massive star formation groups in the nearby region, suggest that G23.0-0.4 is probably located at the near side of the Scutum-Centaurus arm in the first quadrant. Considering the large scale and the elongation structure along the Galactic plane, we speculate that the dense filamentary GMC has relation to the spiral density wave of the Milky Way.
description: 28 preprint pages, 3 Tables, 9 Figures, accepted for publication in ApJ. Comments are welcome
(103022) George Tovey
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.
Q-SMASH: Q-Learning-based Self-Adaptation of Human-Centered Internet of Things
Creators: name: Rahimi, Hamed
name: Trentin, Iago Felipe
name: Ramparany, Fano
name: Boissier, Olivier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: As the number of Human-Centered Internet of Things (HCIoT) applications increases, the self-adaptation of its services and devices is becoming a fundamental requirement for addressing the uncertainties of the environment in decision-making processes. Self-adaptation of HCIoT aims to manage run-time changes in a dynamic environment and to adjust the functionality of IoT objects in order to achieve desired goals during execution. SMASH is a semantic-enabled multi-agent system for self-adaptation of HCIoT that autonomously adapts IoT objects to uncertainties of their environment. SMASH addresses the self-adaptation of IoT applications only according to the human values of users, while the behavior of users is not addressed. This article presents Q-SMASH: a multi-agent reinforcement learning-based approach for self-adaptation of IoT objects in human-centered environments. Q-SMASH aims to learn the behaviors of users along with respecting human values. The learning ability of Q-SMASH allows it to adapt itself to the behavioral change of users and make more accurate decisions in different states and situations.
description: Submitted to wi-iat2021. arXiv admin note: text overlap with arXiv:2105.14915
I/Q Imbalance Aware Widely-Linear Receiver for Uplink Multi-Cell Massive MIMO Systems
Creators: name: Zarei, Shahram
name: Gerstacker, Wolfgang
name: Aulin, Jocelyn
name: Schober, Robert
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In-phase/quadrature-phase (I/Q) imbalance is one of the most important hardware impairments in communication systems. It arises in the analogue parts of direct conversion radio frequency (RF) transceivers and can cause severe performance losses. In this paper, I/Q imbalance (IQI) aware widely-linear (WL) channel estimation and data detection schemes for uplink multi-cell massive multiple-input multiple-output (MIMO) systems are proposed. The resulting receiver is a WL extension of the minimum mean square error (MMSE) receiver and jointly mitigates multi-user interference and IQI by processing the real and the imaginary parts of the received signal separately. The IQI arising at both the base station (BS) and the user terminals (UTs) is then taken into account. The considered channel state information (CSI) acquisition model includes the effects of both estimation errors and pilot contamination, which is caused by the reuse of the same training sequences in neighboring cells. We apply results from random matrix theory to derive analytical expressions for the achievable sum rates of the proposed IQI aware and conventional IQI unaware receivers. Our simulation results show that the performance of the proposed IQI aware WLMMSE receiver in a system with IQI is close to that of the MMSE receiver in an ideal system without IQI. Moreover, our results for the sum rate of the IQI unaware MMSE receiver reveal that the performance loss due to IQI can be large and, if left unattended, does not vanish for large numbers of BS antennas.
description: To appear in IEEE Transactions on Wireless Communications, 40 pages, 4 figures
A Synthesis of Problem and Guidelines for Promoting Literacy of Thai Language Subject Area in First Grade
Creators: name: Sumrongpan, Ladda
name: Waraporn Erawan
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Problem and guidelines for promoting literacy
literacy

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 584-602
The newest born-again planetary nebula
Creators: name: Molina, Borja Montoro
name: Guerrero, M.A.
name: Pérez-Díaz, B.
name: , J.A.Toalá
name: Cazzoli, Sara
name: Bertolami, M.M Miller
name: Morisset, C.
Publisher: name: Zenodo
Year: 2022

description: HuBi 1 is the latest addition to the small but potentially not-so-strange group of born-again planetary nebulae. The VLTP suffered by its central star attenuated its magnitude by 10 mag in just 50 years, as well as giving it a unique inverted ionization structure. The recently measured ejecta reaching up to 200 km/s together with the aforementioned oddities made it the perfect candidate for a born-again nebula in the absence of confirmed ejecta abundances. We present the abundances of recent ejecta calculated using the MAPPINGS V code in a shock scenario as well as their main optical properties.  
The Female Protagonist's Suicide in Fei Wo Si Cun's Dong Gong
Creators: name: Siriporn Sriwarakan
name: Sasarux Petcherdchoo
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Dong Gong
female protagonist's suicide
betrayal trauma
ethnic extinction
river of forgetfulness

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 603-618
(103021) Amelia Tovey
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 Fracture Multiscale Model for Peridynamic enrichment within the Partition of Unity Method
Creators: name: Birner, Matthias
name: Diehl, Patrick
name: Lipton, Robert
name: Schweitzer, Marc Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Partition of unity methods (PUM) are of domain decomposition type and provide the opportunity for multiscale and multiphysics numerical modeling. Different physical models can exist within a PUM scheme for handling problems with zones of linear elasticity and zones where fractures occur. Here, the peridynamic (PD) model is used in regions of fracture and smooth PUM is used in the surrounding linear elastic media. The method is a so-called global-local enrichment strategy. The elastic fields of the undamaged media provide appropriate boundary data for the localized PD simulations. The first steps for a combined PD/PUM simulator are presented. In part I of this series, we show that the local PD approximation can be utilized to enrich the global PUM approximation to capture the true material response with high accuracy efficiently. Test problems are provided demonstrating the validity and potential of this numerical approach.
A Bayesian Latent Variable Mixture Model for Longitudinal Fetal Growth
Creators: name: Slaughter, James C.
name: Herring, Amy H.
name: Thorp, John M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Fetal growth restriction is a leading cause of perinatal morbidity and mortality that could be reduced if high risk infants are identified early in pregnancy. We propose a Bayesian model for aggregating 18 longitudinal ultrasound measurements of fetal size and blood flow into three underlying, continuous latent factors. Our procedure is more flexible than typical latent variable methods in that we relax the normality assumptions by allowing the latent factors to follow finite mixture distributions. Using mixture distributions also permits us to cluster individuals with similar observed characteristics and identify latent classes of subjects who are more likely to be growth or blood flow restricted during pregnancy. We also use our latent variable mixture distribution model to identify a clinically-meaningful latent class of subjects with low birth weight and early gestational age. We then examine the association of latent classes of intrauterine growth restriction with latent classes of birth outcomes as well as observed maternal covariates including fetal gender and maternal race, parity, body mass index (BMI), and height. Our methods identified a latent class of subjects who have increased blood flow restriction and below average intrauterine size during pregnancy who were more likely to be growth restricted at birth than a class of individuals with typical size and blood flow.
(103020) Alice Radford
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.
Using Games to Promote Correct Thai Language Usage by Students of Ratchaprachanukroh School 41, Yala province
Creators: name: Sawaporn Jantarasakul
name: Khwanta Thaweesuk
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Game
Thai vocabulary
instructional media

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 619-630
(103019) Susan Radford
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.
Mimicking the $Λ$CDM Universe through inhomogeneous space-time
Creators: name: Bhattacharya, Subhra
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Starting from an inhomogeneous space-time model of the universe we could recreate a scenario of recent time accelerating universe dominated by Dark Energy type of fluid. The background matter component of such a universe was considered to be made up of a combination of an anisotropic fluid, a barotropic fluid and the presureless cold dark matter. It was found that inhomogeneity exhibits itself as the curvature term in such a universe. We corroborated our model with recent supernova Ia-JLA data together with $H_{0}$ data and BAO data. Cosmographic analysis of the dynamical variables further show that the model can mimic the $Λ$CDM cosmology very closely.
description: Under review
Adjusted Exponentially Tilted Likelihood with Applications to Brain Morphology
Creators: name: Li, Yimei
name: Zhou, Haibo
name: Chen, Jiahua
name: Lieberman, Jeffrey
name: Zhu, Hongtu
name: Styner, Martin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: In this paper, we develop a nonparametric method, called adjusted exponentially tilted likelihood, and apply it to the analysis of morphometric measures. The adjusted exponential tilting estimator is shown to have the same first order asymptotic properties as that of the original exponentially tilted likelihood. The adjusted exponentially tilted likelihood ratio statistic is applied to test linear hypotheses of unknown parameters, such as the associations of brain measures (e.g., cortical and subcortical surfaces) with covariates of interest, such as age, gender, and gene. Simulation studies show that the adjusted exponential tilted likelihood ratio statistic performs as well as the t-test when the imaging data are symmetrically distributed, while it is superior when the imaging data have skewed distribution. We demonstrate the application of our new statistical methods to the detection of statistically significant differences in the morphology of the hippocampus between two schizophrenia groups and healthy subjects.
J-VAR: Observing the Variable Sky in 7 Colours
Creators: name: Ederoclite, Alessandro
name: Ramió, Héctor Vázquez
name: Candal, Álvaro Alvarez
name: Placco, Vinicius
name: Siffert, Beatriz B.
Publisher: name: Zenodo
Year: 2022

description: Over the course of the last century, several projects aimed at time-domain astrophysics have been carried out. Yet, most of these efforts focus on one (or, at most, a few) broad band photometric filters, thus somewhat limiting the amount of astrophysical information which can be extracted from the data. J-VAR is a novel concept for a time-domain survey which is being carried out with the 80cm Javalambre Auxiliary Survey Telescope at the Observatorio Astrofísico de Javalambre (OAJ) on non-photometric nights. Here we present the preliminary result from the first 200square degrees, focusing on the three pillars of our project: Solar System objects, optical transients, and pulsating stars. We also discuss the synergies with other projects, mainly the other surveys being carried out at OAJ: the Javalambre Photometric Local Universe Survey (J-PLUS) and the Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS).
Zero-Shot Out-of-Distribution Detection Based on the Pre-trained Model CLIP
Creators: name: Esmaeilpour, Sepideh
name: Liu, Bing
name: Robertson, Eric
name: Shu, Lei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In an out-of-distribution (OOD) detection problem, samples of known classes(also called in-distribution classes) are used to train a special classifier. In testing, the classifier can (1) classify the test samples of known classes to their respective classes and also (2) detect samples that do not belong to any of the known classes (i.e., they belong to some unknown or OOD classes). This paper studies the problem of zero-shot out-of-distribution(OOD) detection, which still performs the same two tasks in testing but has no training except using the given known class names. This paper proposes a novel yet simple method (called ZOC) to solve the problem. ZOC builds on top of the recent advances in zero-shot classification through multi-modal representation learning. It first extends the pre-trained language-vision model CLIP by training a text-based image description generator on top of CLIP. In testing, it uses the extended model to generate candidate unknown class names for each test sample and computes a confidence score based on both the known class names and candidate unknown class names for zero-shot OOD detection. Experimental results on 5 benchmark datasets for OOD detection demonstrate that ZOC outperforms the baselines by a large margin.
Assessing Vaccine Effects in Repeated Low-Dose Challenge Experiments
Creators: name: Gilbert, Peter B.
name: Hudgens, Michael G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Evaluation of HIV vaccine candidates in non-human primates (NHPs) is a critical step toward developing a successful vaccine to control the HIV pandemic. Historically, HIV vaccine regimens have been tested in NHPs by administering a single high dose of the challenge virus. More recently, evaluation of candidate HIV vaccines has entailed repeated low-dose challenges which more closely mimic typical exposure in natural transmission settings. In this paper, we consider evaluation of the type and magnitude of vaccine efficacy from such experiments. Based on the principal stratification framework, we also address evaluation of potential immunological surrogate endpoints for infection.
New X-ray detections of magnetic period-bounce cataclysmic variables from XMM-Newton and SRG/eROSITA
Creators: name: Muñoz-Giraldo, Daniela
name: Stelzer, Beate
name: de Martino, Domitilla
name: Schwope, Axel
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A great portion of the cataclysmic variable population, between 40% and 70%, is predicted to be made up of period-bouncers, systems with degenerate donors that have evolved past the period minimum. However, due to their intrinsic faintness, only a few of these systems have been observed and confidently identified so far. We have searched for X-ray emission as a proof of accretion in order to confirm period-bounce cataclysmic variables. In a dedicated XMM-Newton observation of the period-bounce candidate SDSS J151415.65+074446.5 we discovered X-ray modulation at the binary orbital period confirming it as an accreting system. The X-ray light curve and the X-ray spectrum display characteristics of magnetic Polar-type systems allowing for the first time the determination of the X-ray luminosity and mass accretion rate for this system. Catalog data from eROSITA on the SRG satellite for V379 Vir and SDSS J125044.42+154957.4 allowed a first look into the X-ray behavior of period-bounce candidates with this new all-sky instrument. From the eROSITA measurements the X-ray luminosity and mass accretion rate were determined for the first time for SDSS J125044.42+154957.4, and the earlier result for V379 Vir from XMM-Newton was confirmed. All three cataclysmic variables with a magnetic white dwarf and very low-mass donor studied in this work present evidence for X-ray emission at a similar level of $L_{\rm x}\,{\rm [erg/s]} \approx 10^{29}$, which, together with the detection of X-ray orbital modulation in two of them, V379 Vir and SDSS J151415.65+074446.5, unambiguously proves the presence of accretion in these systems. The detection of these period-bouncers at faint X-ray luminosity levels with the all-sky X-ray survey eROSITA offers new prospects for the identification of additional period-bouncers, providing impetus for theoretical studies of binary evolution.
description: 8 pages, 4 figures. Accepted for publication in A&A
Bayesian Case Influence Diagnostics for Survival Models
Creators: name: Zhu, Hongtu
name: Ibrahim, Joseph G.
name: Sinha, Debajyoti
name: Cho, Hyunsoon
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: We propose Bayesian case influence diagnostics for complex survival models. We develop case deletion influence diagnostics for both the joint and marginal posterior distributions based on the Kullback–Leibler divergence (K–L divergence). We present a simplified expression for computing the K–L divergence between the posterior with the full data and the posterior based on single case deletion, as well as investigate its relationships to the conditional predictive ordinate. All the computations for the proposed diagnostic measures can be easily done using Markov chain Monte Carlo samples from the full data posterior distribution. We consider the Cox model with a gamma process prior on the cumulative baseline hazard. We also present a theoretical relationship between our case-deletion diagnostics and diagnostics based on Cox’s partial likelihood. A simulated data example and two real data examples are given to demonstrate the methodology.
(103018) John Radford
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.
Case-Cohort Analysis with Accelerated Failure Time Model
Creators: name: Cai, Jianwen
name: Kong, Lan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: In a case–cohort design, covariates are assembled only for a subcohort that is randomly selected from the entire cohort and any additional cases outside the subcohort. This design is appealing for large cohort studies of rare disease, especially when the exposures of interest are expensive to ascertain for all the subjects. We propose statistical methods for analyzing the case–cohort data with a semiparametric accelerated failure time model that interprets the covariates effects as to accelerate or decelerate the time to failure. Asymptotic properties of the proposed estimators are developed. The finite sample properties of case–cohort estimator and its relative efficiency to full cohort estimator are assessed via simulation studies. A real example from a study of cardiovascular disease is provided to illustrate the estimating procedure.
Self-Assessment Report Measurement Model for Online Learning During the COVID-19 Pandemic
Creators: name: Savalee Uttra
name: Ratchada Taengphukieo
name: Piyanat To-On
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Online learning
self-assessment
exploratory factor analysis
confirmatory factor analysis
COVID-19 situation

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 631-645
(103017) Thomas Radford
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.
Dose Finding for Continuous and Ordinal Outcomes with a Monotone Objective Function: A Unified Approach
Creators: name: Ivanova, Anastasia
name: Kim, Se Hee
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: In many phase I trials, the design goal is to find the dose associated with a certain target toxicity rate. In some trials, the goal can be to find the dose with a certain weighted sum of rates of various toxicity grades. For others, the goal is to find the dose with a certain mean value of a continuous response. In this article, we describe a dose-finding design that can be used in any of the dose-finding trials described above, trials where the target dose is defined as the dose at which a certain monotone function of the dose is a prespecified value. At each step of the proposed design, the normalized difference between the current dose and the target is computed. If that difference is close to zero, the dose is repeated. Otherwise, the dose is increased or decreased, depending on the sign of the difference.
The Factors Influencing the Development of Community Potential Through the Digital Community Center
Creators: name: Alonggote Phansanit
name: Wisanu Panyayong
name: Prathana Malithai
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Influencing
development
community potential
digital community center

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 4, no. 646-657
Research Data Management: The New Cargo Cult?
Creators: name: Biskup, Till
Publisher: name: Zenodo
Year: 2024
Subjects: research data management
science
reproducibility
FAIR
Cargo Cult

description: In 1974, Richard Feynman coined the famous phrase “Cargo Cult Science” for research that appears scientific but has no scholarly contribution nor impact. [1] The current hype on “Research Data Management” is similar in many ways: If only we were all to properly fill out data data management plans, FAIRly publish all our data irrespective of their quality, use electronic lab notebooks and all the other fancy new promising tools, and employ enough data stewarts and data architects to relieve us from the burden of documenting what we actually did, science cannot help but flourish and golden times are dawning. We could not be more wrong. Data is not insight, but its prerequisite at best. Similarly, tools are not solutions. If we were really to advance science, we better understand that research can be without scholarly contribution, and that data, let alone sharing data, is a highly non-trivial concept resting on many implicit assumptions often not fulfilled. [2]

Here, we present a series of strategies and tools that, when competently used, help us enhance the quality of our research and eventually contribute to science and scholarship. The journey starts with tools for collecting all relevant information during data acquisition, [3] and electronic lab notebooks. [4] A framework for scientific data analysis providing a gap-less and complete protocol of each step and relieving the user from actually programming [5] is a huge step forward. Dedicated packages for different spectroscopic methods are available [6,7] and in active development. [8,9] On top comes a larger (local) infrastructure consisting of persistent and unique IDs (PID, UID), a repository for “warm” research data, lab management, and knowlede base. [10] All these strategies and tools focus on the individual scientists, as only they can potentially ensure the urgently required quality of data and results scientific insight rests upon.

Eventually, we need to teach [11] the students early on what science is all about and why properly handling research data is a prerequisite for scholarly contribution, rather than assuming that they’ve “caught on by osmosis”. [1] “At stake is the future ofscholarship.” [2]

Literature:

[1] R. P. Feynman, Eng. Sci. 1974, 37(7), 10[2] C. L. Borgman, Big Data, Little Data, No Data. MIT Press, Cambridge MA 2015[3] B. Paulus, T. Biskup, Digit. Discov. 2023, 2, 234[4] M. Schröder, T. Biskup, ChemRxiv 2023, doi:10.26434/chemrxiv-2023-2tvct[5] J. Popp, T. Biskup, Chem. Meth. 2022, 2, e202100097[6] M. Schröder, T. Biskup, J. Magn. Reson. 2022, 335, 107140[7] J. Popp, M. Schröder, T. Biskup, doi:10.5281/zenodo.4897112[8] M. Schröder, doi:10.5281/zenodo.13293054[9] T. Biskup, doi:10.5281/zenodo.5920380[10] T. Biskup, ChemRxiv 2022, doi:10.26434/chemrxiv-2022-vz360[11] https://www.till-biskup.de/de/lehre/forschungsdatenmanagement/
(103016) Sarah Jane Wren
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.
Supersymmetry : A decade after Higgs discovery
Creators: name: Mummidi, V. Suryanarayana
name: Lamba, Priyanka
name: Vempati, Sudhir K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Supersymmetric extensions of the Standard Model have been in vogue for over half a century. They have many interesting theoretical properties like calculability, absence of quadratic divergences, and phenomenologically impactful features like gauge coupling unification, dark matter candidates, signatures at present and future colliders, etc. A defining feature of these models is the calculability of Higgs mass in terms of a few parameters. The discovery of a Higgs particle with a mass of around 125 GeV thus has significant implications. The null results for the searches of superpartners at LHC has also put further constraints. Taken together with direct detection limits on WIMP (Weakly Interacting Massive Particle) dark matter, it appears that TeV scale supersymmetry is not realised in Nature and the theoretical expectations have reached a turning point. The present onslaught from the experiments suggests that supersymmetric models need a more complex particle structure, lagrangian and breaking patterns to be a natural solution to the hierarchy problem. We review existing models and discuss their feasibility in the current and future experimental programs.
description: 15 pages, 11 figures, 3 tables. Accepted for publication in Indian Journal of Physics
Estimated Pseudopartial-Likelihood Method for Correlated Failure Time Data with Auxiliary Covariates
Creators: name: Liu, Yanyan
name: Zhou, Haibo
name: Cai, Jianwen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: As biological studies become more expensive to conduct, statistical methods that take advantage of existing auxiliary information about an expensive exposure variable are desirable in practice. Such methods should improve the study efficiency and increase the statistical power for a given number of assays. In this paper, we consider an inference procedure for multivariate failure time with auxiliary covariate information. We propose an estimated pseudo-partial likelihood estimator under the marginal hazard model framework and develop the asymptotic properties for the proposed estimator. We conduct simulation studies to evaluate the performance of the proposed method in practical situations and demonstrate the proposed method with a data set from the Studies of Left Ventricular Dysfunction (SOLVD,1991).
Binning is Sinning: Redemption for Hubble Diagram using Photometrically Classified Type Ia Supernovae
Creators: name: Kessler, Richard
name: Vincenzi, Maria
name: Armstrong, Patrick
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Bayesian Estimation Applied to Multiple Species (BEAMS) is implemented in the BEAMS with Bias Corrections (BBC) framework to produce a redshift-binned Hubble diagram (HD) for Type Ia supernovae (SNe Ia). BBC corrects for selection effects and non-SNIa contamination, and systematic uncertainties are described by a covariance matrix with dimension matching the number of BBC redshift bins. For spectroscopically confirmed SN Ia samples, a recent "Binning is Sinning" article (BHS21, arxiv:2012.05900) showed that an unbinned HD and covariance matrix reduces the systematic uncertainty by a factor of ~1.5 compared to the binned approach. Here we extend their analysis to obtain an unbinned HD for a photometrically identified sample processed with BBC. To test this new method, we simulate and analyze 50 samples corresponding to the Dark Energy Survey (DES) witha low-redshift anchor; the simulation includes SNe Ia, and contaminants from core-collapse SNe and peculiar SNe Ia. The analysis includes systematic uncertainties for calibration, and measures the dark energy equation of state parameter (w). Compared to a redshift-binned HD, the unbinned HD with nearly 2000 events results in a smaller systematic uncertainty, in qualitative agreement with BHS21, and averaging results among the 50 samples we find no evidence for a w-bias. To reduce computation time for fitting an unbinned HD with large samples, we propose an HD-rebinning method that defines the HD in bins of redshift, color, and stretch; the rebinned HD results in similar uncertainty as the unbinned case, and shows no evidence for a w-bias.