cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supernova Fallback: A Possible Site for the r-Process
Creators: name: Fryer, Chris L.
name: Herwig, Falk
name: Hungerford, Aimee
name: Timmes, Frank
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The conditions for the leading r-process site candidate, neutrino-driven winds, can not be reproduced self-consistently in current supernova models. For that reason, we investigate an alternate model involving the mass ejected by fallback in a supernova explosion, through hydrodynamic and nucleosynthesis calculations. The nucleosynthetic products of this ejected material produces r-process elements, including those in the vicinity of the elusive 3rd peak at mass number 195. Trans-iron element production beyond the second peak is made possible by a rapid (<1ms) freezeout of alpha particles which leaves behind a large nucleon (including protons!) to r-process seed ratio. This rapid phase is followed by a relatively long (>15 ms) simmering phase at ~2e9 K, which is the thermodynamic consequence of the hydrodynamic trajectory of the turbulent flows in the fallback outburst. During the slow phase high mass elements beyond the second peak are first made through rapid capture of both protons and neutrons. The flow stays close to valley of stability during this phase. After freeze-out of protons the remaining neutrons cause a shift out to short-lived isotopes as is typical for the r-process. A low electron fraction isn't required in this model, however, the detailed final distribution is sensitive to the electron fraction. Our simulations suggest that supernova fallback is a viable alternative scenario for the r-process.
description: 12 pages (including 3 figures), submitted to ApJ, comments welcome
NAVIGATING SPACE SAFELY - COMPREHENSIVE INSIGHTS INTO NUCLEAR REACTOR TECHNOLOGIES
Creators: name: Brandl, Edenilson
Publisher: name: Zenodo
Year: 2024
Subjects: Space Reactor Technology
Radiological Safety
Nuclear Propulsion Systems
Kanban Methodology
Vibration Analysis Sensors
Risk Assessment
High-Speed Interplanetary Navigation
Distributed Reactor Systems
Fault Response Strategies
Multidisciplinary Engineering

description: This article provides an in-depth exploration of the intricate facets surrounding the integration and deployment of nuclear reactors in space exploration. Delving into radiological safety protocols, integration with advanced propulsion systems, and the crucial role of vibration and stress analysis sensors, this article presents a holistic view of the challenges and innovations in space reactor technology. By incorporating risk assessment methodologies, efficient propulsion strategies, and fault response systems, the article elucidates how distributed nuclear reactors contribute to the reliability and safety of interplanetary missions. With a multidisciplinary approach encompassing engineering, physics, and materials science, this comprehensive overview underscores the critical importance of precise planning, continuous monitoring, and collaborative efforts to ensure the success and safety of space exploration endeavors.

 

Dieser Artikel bietet eine detaillierte Untersuchung der komplizierten Aspekte der Integration und des Einsatzes von Kernreaktoren in der Weltraumforschung. Dieser Artikel befasst sich mit radiologischen Sicherheitsprotokollen, der Integration in fortschrittliche Antriebssysteme und der entscheidenden Rolle von Vibrations- und Spannungsanalysesensoren und bietet einen ganzheitlichen Blick auf die Herausforderungen und Innovationen in der Weltraumreaktortechnologie. Durch die Einbeziehung von Risikobewertungsmethoden, effizienten Antriebsstrategien und Fehlerreaktionssystemen erläutert der Artikel, wie verteilte Kernreaktoren zur Zuverlässigkeit und Sicherheit interplanetarer Missionen beitragen. Mit einem multidisziplinären Ansatz, der Ingenieurwesen, Physik und Materialwissenschaften umfasst, unterstreicht dieser umfassende Überblick die entscheidende Bedeutung präziser Planung, kontinuierlicher Überwachung und gemeinsamer Bemühungen, um den Erfolg und die Sicherheit von Weltraumforschungsbemühungen zu gewährleisten.
Tidal pattern instabilities on multi-moon planets
Creators: name: Furno, Joanna
name: Kuehn, Kerry
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The equilibrium tide-generating forces in the lunar orbital plane of a planet of radius R are calculated for the case of N moons of mass M_i orbiting the planet at instantaneous polar coordinates (D_i, α_i). For the case of a single moon, there are only two high tides. For the case of two moons, it is found that there can exist a critical lunar orbital distance at which two high tides become unstable with respect to formation of three high tides. Bifurcation diagrams are presented which depict how the angular positions of the high and low tides on the planet vary with the lunar distances and lunar separation angle. Tidal stability diagrams, which illustrate the stability regions for various tidal patterns as a function of lunar distances and lunar separation angle, are presented for various values of D_2/D_1 and M_2/M_1. Generally speaking, the aforementioned tidal instability, and hence the propensity for formation of three high tides on a two-moon planet, exists over a significant range of lunar distances and separation angles provided that M_2/M_1 \sim (D_2/D_1)^3. For the case of N>2 moons, the tidal stability diagram becomes more complex, revealing a diversity of potential tidal patterns.
description: 26 pages, 9 figures
The internal struggle
Creators: name: Stewart, D. Andrew
Publisher: name: University of British Columbia
Year: 2009

description: This is a compilation of all music composed over a two year period, for the requirements of a Masters of Music Degree with a major in Music Composition. There are five compositions included in this document. In chronological order, these compositions are: Bent for orchestra, Fever for solo piano without page-turner, Natural Distortions for wind orchestra, I'm so Amplified.... for solo oboe, and Images From Irrelevant Thoughts for chamber ensemble. Bent was performed during an orchestral reading session by The University of British Columbia Orchestra in March of 1995. Natural Distortions had its premiere on April 3, 1996 by The University of British Columbia Wind Orchestra. All other compositions were performed in a graduate recital organized by the composer on April 20, 1996.
Pythonic Black-box Electronic Structure Tool (PyBEST). An open-source Python platform for electronic structure calculations at the interface between chemistry and physics
Creators: name: Boguslawski, Katharina
name: Leszczyk, Aleksandra
name: Nowak, Artur
name: Brzęk, Filip
name: Żuchowski, Piotr Szymon
name: Kędziera, Dariusz
name: Tecmer, Paweł
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Pythonic Black-box Electronic Structure Tool (PyBEST) represents a fully-fledged modern electronic structure software package developed at Nicolaus Copernicus University in Toruń. The package provides an efficient and reliable platform for electronic structure calculations at the interface between chemistry and physics using unique electronic structure methods, analysis tools, and visualization. Examples are the (orbital-optimized) pCCD-based models for ground- and excited-states electronic structure calculations as well as the quantum entanglement analysis framework based on the single-orbital entropy and orbital-pair mutual information. PyBEST is written primarily in the Python3 programming language with additional parts written in C++, which are interfaced using Pybind11, a lightweight header-only library. By construction, PyBEST is easy to use, to code, and to interface with other software packages. Moreover, its modularity allows us to conveniently host additional Python packages and software libraries in future releases to enhance its performance. The electronic structure methods available in PyBEST are tested for the half-filled 1-D model Hamiltonian. The capability of PyBEST to perform large-scale electronic structure calculations is demonstrated for the model vitamin B12 compound. The investigated molecule is composed of 190 electrons and 777 orbitals for which an orbital optimization within pCCD and an orbital entanglement and correlation analysis are performed for the first time.
description: 40 pages, 2 figures
NetCut: Real-Time DNN Inference Using Layer Removal
Creators: name: Zandigohar, Mehrshad
name: Erdogmus, Deniz
name: Schirner, Gunar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Deep Learning plays a significant role in assisting humans in many aspects of their lives. As these networks tend to get deeper over time, they extract more features to increase accuracy at the cost of additional inference latency. This accuracy-performance trade-off makes it more challenging for Embedded Systems, as resource-constrained processors with strict deadlines, to deploy them efficiently. This can lead to selection of networks that can prematurely meet a specified deadline with excess slack time that could have potentially contributed to increased accuracy. In this work, we propose: (i) the concept of layer removal as a means of constructing TRimmed Networks (TRNs) that are based on removing problem-specific features of a pretrained network used in transfer learning, and (ii) NetCut, a methodology based on an empirical or an analytical latency estimator, which only proposes and retrains TRNs that can meet the application's deadline, hence reducing the exploration time significantly. We demonstrate that TRNs can expand the Pareto frontier that trades off latency and accuracy to provide networks that can meet arbitrary deadlines with potential accuracy improvement over off-the-shelf networks. Our experimental results show that such utilization of TRNs, while transferring to a simpler dataset, in combination with NetCut, can lead to the proposal of networks that can achieve relative accuracy improvement of up to 10.43% among existing off-the-shelf neural architectures while meeting a specific deadline, and 27x speedup in exploration time.
Lithium Ruthenates: Controlling Dimensionality and Topology of Magnetic-Ion Arrangements
Creators: name: Soma, Makoto
name: Sato, Hirohiko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In order to control the dimensionality and the topology of the arrangement of magnetic Ru ions, NaCl-type lithium ruthenates have been investigated. Three types of lithium ruthenates, Li$_{3}$RuO$_{4}$, Li$_{2}$RuO$_{3}$, and cubic-Li$_{x}$RuO$_{1+x}$, were synthesized using a hydrothermal method. All of them have NaCl-type structure, but the arrangements of the cations, Li$^{+}$ and Ru$^{5+}$ (or Ru$^{4+}$), differ from each other. Li$_{3}$RuO$_{4}$ with one-dimensional zigzag chains of Ru ions undergoes an antiferromagnetic transition at 66 K and exhibits an irreversibile magnetism below 32 K, where the zero-field-cooled susceptibility differs from the field-cooled susceptibility. Li$_{2}$RuO$_{3}$ with a two-dimensional honeycomb network of Ru ions demonstrates a paramagnetism almost independent of temperature. A novel ruthenate cubic-Li$_{x}$RuO$_{1+x}$, in which Ru and Li randomly occupy the cation sites of NaCl lattice, undergoes a spin-glass transition at 10 K.
description: 20 pages, 10 figures, J. Phys. Soc. Jpn. in press
РОЛЬ ОБОРОННОЙ ДОКТРИНЫ В УКРЕПЛЕНИИ СИСТЕМЫ ОБОРОНЫ РЕСПУБЛИКИ УЗБЕКИСТАН
Creators: name: Исматов, Мамасабир
name: O'zетова, Авазбека
Publisher: name: Zenodo
Year: 2024

description: В данной статье автор описывает роль Доктрины Обороны в укреплении Системы Обороны Республики Узбекистан, ее возможности для организatsiи современной, мобильной, хорошо вооруженной армии, способной к тактически и стратегически эффективному решению задач. обеспечение безопасности и стабильности нашей страны, нерушимости ее границ в годы независимости и обосновало планомерное и постепенное проведение масштабных работ.
From classical to Networked Control: Retrofitting the Concept of Smith Predictors
Creators: name: Steinberger, Martin
name: Horn, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Filtered Smith predictors are well established for controlling linear plants with constant time delays. Apart from this classical application scenario, they are also employed within networked control loops, where the measurements are sent in separate packets over a transmission channel that is subject to time-varying delays. However, no stability guarantees can be given in this case. The present paper illustrates that the time-varying delays as well as the packetized character of the transmissions have to be taken into account for stability analysis. Hence, three network protocols, which use different packet selection and hold mechanisms, are considered. Criteria for robust stability of the networked feedback loop are given. They are based on the small gain theorem and allow a computationally inexpensive way to check stability for the case with bounded packet delays. Simulation examples provide insight into the presented approach and show why the inclusion of the time-varying packetized character of the network transmissions is vital for stability analysis.
Non-Commutative Geometry & Physics
Creators: name: Wohlgenannt, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This talk is an introduction to ideas of non-commutative geometry and star products. We will discuss consequences for physics in two different settings: quantum field theories and astrophysics. In case of quantum field theory, we will discuss two recently introduced models in some detail. Astrophysical aspects will be discussed considering modified dispersion relations.
description: 22 pages, 1 figure, seminar talks given at the Universities Ivano-Frankivsk and Kamenets-Podolsk (Ukraine)
MULTIVARIATE BIOSTATISTICAL ANALYSIS OF HEALTH INSURANCE COVERAGE AND ACCESS TO HEALTHCARE SERVICES IN GHANA USING COMPLEX SURVEY DATA
Creators: name: A. Dinesh Kumar & Jerryson Ameworgbe Gidisu
Publisher: name: Zenodo
Year: 2025

description: Access to healthcare is a fundamental human right, yet in Ghana, disparities persist due to uneven health insurance coverage and socioeconomic inequities. This study is crucial as it addresses a significant policy gap by analyzing how demographic and structural factors influence healthcare access, using robust multivariate biostatistical tools on complex survey data from 2020-2024. The primary objective was to examine how health insurance type, income, education, employment, gender, and location affect access to healthcare services. Employing Generalized Linear Mixed Models, chi-square tests, ANOVA, and correlation analyses on a nationally representative sample of 3,000 respondents, the study found that public insurance covered 40.0% of the population, while 33.3% remained uninsured. The chi-square test revealed a significant association between insurance type and healthcare utilization (χ² = 198.42, p< 0.001), with private insurance holders accessing care more frequently. ANOVA results confirmed that income significantly affects insurance status (F = 87.19, p< 0.001), and education showed a positive gradient with healthcare access-from 55% (primary) to 85% (tertiary). Urban residents accessed healthcare at a rate of 78.0% compared to 49.0% for rural residents (t = 19.42, p< 0.001), and females utilized services more than males (t = 6.37, p< 0.01). The correlation matrix showed strong associations between insurance and education (r = 0.50), income (r = 0.45), and healthcare visits (r = 0.40). The overall regression model explained 61% of the variance in healthcare access (R² = 0.61), identifying education (β = 0.34), insurance (β = 0.29), and income (β = 0.27) as the strongest predictors. These findings imply that achieving equitable healthcare requires integrated policies that combine economic support, education, and infrastructure, particularly for rural and low-income populations. It is recommended that Ghana adopt targeted subsidies, mobile clinics, and gender-sensitive outreach programs to bridge the coverage and access gaps.
Intergenerational transmission of culture among immigrants: Gender gap in education among first and second generations
Creators: name: NoghaniBehambari, Hamid
name: Tavassoli, Nahid
name: Noghani, Farzaneh
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: This paper illustrates the intergenerational transmission of the gender gap in education among first and second-generation immigrants. Using the Current Population Survey (1994-2018), we find that the difference in female-male education persists from the home country to the new environment. A one standard deviation increase of the ancestral country female-male difference in schooling is associated with 17.2% and 2.5% of a standard deviation increase in the gender gap among first and second generations, respectively. Since gender perspective in education uncovers a new channel for cultural transmission among families, we interpret the findings as evidence of cultural persistence among first generations and partial cultural assimilation of second generations. Moreover, Disaggregation into country-groups reveals different paths for this transmission: descendants of immigrants of lower-income countries show fewer attachments to the gender opinions of their home country. Average local education of natives can facilitate the acculturation process. Immigrants residing in states with higher education reveal a lower tendency to follow their home country attitudes regarding the gender gap.
Elicitation - switch-reference
Creators: name: Piño Bonangué, José
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with José Piño Bonangué. Topics covered include switch-reference, relative clauses, attitude reports, and negation.
A search for millimeter emission from the coldest and closest brown dwarf with ALMA
Creators: name: Petry, Dirk
name: Ivanov, Valentin D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: WISE J085510.83-071442.5 (W0855) is a unique object: with Teff ca. 250 K, it is the coldest known brown dwarf (BD), located at only ca.2.2 pc form the Sun. It is extremely faint, which makes any astronomical observations difficult. However, at least one remotely similar ultra-low-mass object, the M9 dwarf TVLM 513-46546, has been shown to be a steady radio emitter at frequencies up to 95 GHz with superimposed active states where strong, pulsed emission is observed. Aims: Our goal is to determine the millimeter radio properties of W0855 with deep observations around 93 GHz (3.2 mm) in order to investigate whether radio astrometry of this object is feasible and to measure or set an upper limit on its magnetic field. Methods: We observed W0855 for 94 min at 85.1-100.9 GHz on 24 December 2019 using 44 of the Atacama Large millimeter Array (ALMA) 12 m antennas. We used the standard ALMA calibration procedure and created the final image for our analysis by accommodating the Quasar 3C 209, the brightest nearby object by far. Furthermore, we created a light curve with a 30 s time resolution to search for pulsed emission. Results: Our observations achieve a noise RMS of 7.3 μJy/beam for steady emission and of 88 μJy for 30 s pulses in the aggregated bandwidth (Stokes I). There is no evidence for steady or pulsed emission from the object at the time of the observation. We derive 3 σ upper limits of 21.9 μJy on the steady emission and of 264 μJy on the pulsed emission of W0855 between 85 GHz and 101 GHz. Conclusions: Together with the recent non-detection of W0855 at 4-8 GHz, our constraints on the steady and pulsed emission from W0855 confirm that the object is neither radio-loud nor magnetospherically particularly active.
description: 4 pages, 3 figures, accepted by A&A
Scope and convergence of the hopping parameter expansion in finite temperature QCD with heavy quarks around the critical point
Creators: name: Wakabayashi, Naoki
name: Ejiri, Shinji
name: Kanaya, Kazuyuki
name: Kitazawa, Masakiyo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Hopping parameter expansion is a useful tool to investigate heavy dynamical quarks in lattice QCD, while the range of its applicability has been sometimes questioned. We study the convergence and the valid range of the hopping parameter expansion in the determination of the critical point (critical quark mass) of QCD with heavy quarks at finite temperature and density. On lattices with sufficiently large spatial extent, the terms in the hopping parameter expansion are classified into Wilson loop terms and Polyakov-type loop terms. We first study the case of the worst convergence in which all the gauge link variables are unit matrices and thus the Wilson loops and the Polyakov-type loops get their maximum values. We perform explicit calculation up to more than 100th order of the hopping parameter expansion. We show that the hopping parameter expansion is convergent up to the chiral limit of free Wilson quarks. We then perform a Monte-Carlo simulation to measure correlation among Polyakov-type loop terms up to the 20th order of the hopping parameter expansion. In previous studies, strong correlation between the leading order Polyakov loop term and the next-to-leading order bent Polyakov loop terms was reported and used to construct an effective theory to incorporate the next-to-leading order effect by a shift of the leading order coupling parameter. We establish that the strong correlation among Polyakov-type loop terms holds also at higher orders of the hopping parameter expansion, and extend the effective theory to incorporate higher-order effects up to high orders. Using the effective theory, we study the truncation error of the hopping parameter expansion. We find that the previous next-to-leading order result of the critical point for $N_t=4$ are well reliable. For $N_t \ge 6$, we need to incorporate higher-order effects in the effective theory.
description: 29 pages, 14 figures, 5 tables
The DEEP2 Galaxy Redshift Survey: Redshift Identification of Single-Line Emission Galaxies
Creators: name: Kirby, E. N.
name: Guhathakurta, P.
name: Faber, S. M.
name: Koo, D. C.
name: Weiner, B. J.
name: Cooper, M. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present two methods for determining spectroscopic redshifts of galaxies in the DEEP2 survey which display only one identifiable feature, an emission line, in the observed spectrum ("single-line galaxies"). First, we assume each single line is one of the four brightest lines accessible to DEEP2: Halpha, [OIII] 5007, Hbeta, or [OII] 3727. Then, we supplement spectral information with BRI photometry. The first method, parameter space proximity (PSP), calculates the distance of a single-line galaxy to galaxies of known redshift in (B-R), (R-I), R, observed wavelength parameter space. The second method is an artificial neural network (ANN). Prior information, such as allowable line widths and ratios, rules out one or more of the four lines for some galaxies in both methods. Based on analyses of evaluation sets, both methods are nearly perfect at identifying blended [OII] doublets. Of the lines identified as Halpha in the PSP and ANN methods, 91.4% and 94.2% respectively are accurate. Although the methods are not this accurate at discriminating between [OIII] and Hbeta, they can identify a single line as one of the two, and the ANN method in particular unambiguously identifies many [OIII] lines. From a sample of 640 single-line spectra, the methods determine the identities of 401 (62.7%) and 472 (73.8%) single lines, respectively, at accuracies similar to those found in the evaluation sets.
description: 11 pages, 6 figures, accepted to ApJ
The host galaxy of OJ 287 revealed by optical and near-infrared imaging
Creators: name: Nilsson, K.
name: Kotilainen, J.
name: Valtonen, M.
name: Gomez, J. L.
name: Castro-Tirado, A. J.
name: Drozdz, M.
name: Gopakumar, A.
name: Jeong, S.
name: Kidger, M.
name: Komossa, S.
name: Mathur, S.
name: Park, I. H.
name: Reichart, D. E.
name: Zola, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The BL Lacertae object OJ 287 (z = 0.306) has unique double-peaked optical outbursts every ~12 years, and it presents one of the best cases for a small-separation binary supermassive black hole (SMBH) system, with an extremely massive primary log (M_BH/M_Sun) ~ 10.3. However, the host galaxy is unresolved or only marginally detected in all optical studies so far, indicating a large deviation from the bulge mass - SMBH mass relation. We have obtained deep, high spatial resolution i-band and K-band images of OJ~287 when the target was in a low state, which enable us to detect the host galaxy. We find the broad-band photometry of the host to be consistent with an early type galaxy with M_R = -22.5 and M_K = -25.2, placing it in the middle of the host galaxy luminosity distribution of BL Lacertae objects. The central supermassive black hole is clearly overmassive for a host galaxy of that luminosity, but not unprecedented, given some recent findings of other ``overmassive'' black holes in nearby galaxies.
description: Accepted for publication in Astrophysical Journal
An ensemble-based approach by fine-tuning the deep transfer learning models to classify pneumonia from chest X-ray images
Creators: name: Venu, Sagar Kora
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Pneumonia is caused by viruses, bacteria, or fungi that infect the lungs, which, if not diagnosed, can be fatal and lead to respiratory failure. More than 250,000 individuals in the United States, mainly adults, are diagnosed with pneumonia each year, and 50,000 die from the disease. Chest Radiography (X-ray) is widely used by radiologists to detect pneumonia. It is not uncommon to overlook pneumonia detection for a well-trained radiologist, which triggers the need for improvement in the diagnosis's accuracy. In this work, we propose using transfer learning, which can reduce the neural network's training time and minimize the generalization error. We trained, fine-tuned the state-of-the-art deep learning models such as InceptionResNet, MobileNetV2, Xception, DenseNet201, and ResNet152V2 to classify pneumonia accurately. Later, we created a weighted average ensemble of these models and achieved a test accuracy of 98.46%, precision of 98.38%, recall of 99.53%, and f1 score of 98.96%. These performance metrics of accuracy, precision, and f1 score are at their highest levels ever reported in the literature, which can be considered a benchmark for the accurate pneumonia classification.
Short-Hard Gamma-Ray Bursts
Creators: name: Nakar, Ehud
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Two types of Gamma-ray bursts (GRBs) are observed: short duration hard spectrum GRBs and long duration soft spectrum GRBs. For many years long GRBs were the focus of intense research while the lack of observational data limited the study of short-hard GRBs (SHBs). In 2005 a breakthrough occurred following the first detections of SHB afterglows, longer wavelength emission that follows the burst of gamma-rays. Similarly to long GRBs, afterglow detections led to the identification of SHB host galaxies and measurement of their redshifts. These observations established that SHBs are cosmological relativistic sources that, unlike long GRBs, do not originate from the collapse of massive stars, and therefore constitute a distinct physical phenomenon. One viable model for SHB origin is the coalescence of compact binary systems (double neutron stars or a neutron star and a black hole), in which case SHBs are the electromagnetic counterparts of strong gravitational-wave sources. The theoretical and observational study of SHBs following the recent pivotal discoveries is reviewed, along with new theoretical results that are presented here for the first time.
description: A review, 80 pages, 12 figures
Cluster decay in very heavy nuclei in Relativistic Mean Field
Creators: name: Bhattacharya, Madhubrata
name: Gangopadhyay, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Exotic cluster decay of very heavy nuclei has been studied in the microscopic Super-Asymmetric Fission Model. Relativistic Mean Field model with the force FSU Gold has been employed to obtain the densities of the cluster and the daughter nuclei. The microscopic nuclear interaction DDM3Y1, which has an exponential density dependence, and the Coulomb interaction have been used in the double folding model to obtain the potential between the cluster and the daughter. Half life values have been calculated in the WKB approximation and the spectroscopic factors have been extracted. The latter values are seen to have a simple dependence of the mass of the cluster as has been observed earlier. Predictions have been made for some possible decays.
description: To appear in Physical Review C
Relative exactness modulo a polynomial map and algebraic $(\mathbb{C}^p,+)$-actions
Creators: name: Bonnet, Philippe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14R20; 14R25

description: Let $F=(f_1,...,f_q)$ be a polynomial dominating map from $\mathbb{C}^n$ to $\mathbb{C}^q$. We study the quotient ${\cal{T}}^1(F)$ of polynomial 1-forms that are exact along the fibres of $F$, by 1-forms of type $dR+\sum a_idf_i$, where $R,a_1,...,a_q$ are polynomials. We prove that ${\cal{T}}^1(F)$ is always a torsion $\mathbb{C}[t_1,...,t_q]$-module. The we determine under which conditions on $F$ we have ${\cal{T}}^1(F)=0$. As an application, we study the behaviour of a class of algebraic $(\mathbb{C}^p,+)$-actions on $\mathbb{C}^n$, and determine in particular when these actions are trivial.
description: 26 pages
Timeline of public health measures in Ireland during March - July 2020
Creators: name: Troya, Maria Isabela
name: Joyce, Mary
name: Khashan, Ali
name: Buckley, Claire
name: Chakraborti, Kasturi
name: Hoevel, Philipp
name: Humphries, Rory
name: Kearney, Patricia
name: Kiely, Elizabeth
name: Murphy, Michael
name: Perry, Ivan
name: Arensman, Ella
Publisher: name: Zenodo
Year: 2021

description: Table outlining the timeline of COVID-19 related public health measures implemented in the Republic of Ireland during the period March - July 2020.
On the normal ordering of multi-mode boson operators
Creators: name: Mansour, Toufik
name: Schork, Matthias
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this article combinatorial aspects of normal ordering annihilation and creation operators of a multi-mode boson system are discussed. The modes are assumed to be coupled since otherwise the problem of normal ordering is reduced to the corresponding problem of the single-mode case. To describe the normal ordering in the multi-mode case for each mode a colour is introduced and coloured contractions are considered. A depiction for coloured contractions via coloured linear representations is given. In analogy to the single-mode case associated coloured Stirling numbers are defined as coefficients appearing in the process of normal ordering powers of the number operators. Several properties of these coloured Stirling numbers are discussed.
description: 16 pages; typos corrected
Spectroscopic search for new SW Sextantis stars in the 3-4 hour orbital period range -- I
Creators: name: Rodriguez-Gil, P.
name: Schmidtobreick, L.
name: Gaensicke, B. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [Abridged] We report on time-resolved optical spectroscopy of ten non-eclipsing nova-like cataclysmic variables in the orbital period range between 3 and 4 hours. Of the ten systems so far observed, HL Aqr, BO Cet, AH Men, V380 Oph, AH Pic, and LN UMa are identified as new members of the SW Sex class. We present improved orbital period measurements for HL Aqr (Porb = 3.254 +- 0.001 h) and V380 Oph (Porb = 3.69857 +- 0.00002 h). BO Cet and V380 Oph exhibit emission-line flaring with periodicities of 20 min and 47 min, respectively. The Halpha line of HL Aqr shows significant blueshifted absorption modulated at the orbital period. Similarly to the emission S-wave of the high-inclination SW Sex stars, this absorption S-wave has its maximum blue velocity at orbital phase ~0.5. We estimate an orbital inclination for HL Aqr in the range 19 < i < 27 deg, which is much lower than that of the emission-dominated, non-eclipsing SW Sex stars (i ~ 60-70 deg). This gives rise to the interesting possibility of many low-inclination nova-likes actually being SW Sex stars, but with a very different spectroscopic appearance as they show significant absorption. The increasing blueshifted absorption with decreasing inclination points to the existence of a mass outflow with significant vertical motion. This six new additions to the SW Sex class increase the presence of non-eclipsing systems to about one third of the whole SW Sex population, which therefore makes the requirement of eclipses as a defining criterion for SW Sex membership no longer valid. The statistics of the cataclysmic variable population in the vicinity of the upper period gap is also discussed.
description: 20 pages, 19 figures, accepted for publication in MNRAS
Scared into Action: How Partisanship and Fear are Associated with Reactions to Public Health Directives
Creators: name: Lindow, Mike
name: DeFranza, David
name: Mishra, Arul
name: Mishra, Himanshu
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: Computation and Language (cs.CL)
subject: Computation (stat.CO)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: Differences in political ideology are increasingly appearing as an impediment to successful bipartisan communication from local leadership. For example, recent empirical findings have shown that conservatives are less likely to adhere to COVID-19 health directives. This behavior is in direct contradiction to past research which indicates that conservatives are more rule abiding, prefer to avoid loss, and are more prevention-motivated than liberals. We reconcile this disconnect between recent empirical findings and past research by using insights gathered from press releases, millions of tweets, and mobility data capturing local movement in retail, grocery, workplace, parks, and transit domains during COVID-19 shelter-in-place orders. We find that conservatives adhere to health directives when they express more fear of the virus. In order to better understand this phenomenon, we analyze both official and citizen communications and find that press releases from local and federal government, along with the number of confirmed COVID-19 cases, lead to an increase in expressions of fear on Twitter.
description: 54 pages, 11 figures
Mitigation of poultry manure pollution in the Fraser Valley
Creators: name: Mpyisi, Edson Rurangwa
Publisher: name: University of British Columbia
Year: 2009

description: Intensive poultry production in the lower Fraser Valley of British Columbia has resulted in large quantities of poultry manure being spread on limited land space. This manure is spread on land situated above the Abbotsford aquifer. Due to the high amount of nitrogen and phosphorus present in poultry manure, there is a danger of these nutrients leaching into the groundwater of the aquifer as nitrates. High levels of nitrates in drinking water have been linked to various health hazards such as Methemoglobinaemia, stomach cancer, and gastric cancer. The leaching problem is further compounded by the fact that the region has porous soils, a high water table, and very high annual rainfall. This problem was addressed by analyzing several dietary treatments having varying levels of crude protein from a high of 25% CP (crude protein) to a low of 18% CP and supplemented with the commercial amino acids L-LYS , DL-MET , L-THR, and L-TRY . A linear programming model was used to determine the least cost diet from the various dietary treatments. The most efficient dietary treatment was then identified by Manure disposal options such as storage, land application, and transportation were also considered along with their associated costs. Linear programming was used to identify the least cost manure disposal strategy complying with British Columbia environmental regulations by using a combination of the three options. The results from the two models above were then combined to identify the optimum manure management strategy for a poultry farm in the Fraser valley complying with environmental regulations. The results indicate that diets containing lower levels of crude protein and supplemented with amino acids costs less than those containing higher levels of crude protein. These diets perform better because the nitrogen in the protein is utilized more efficiently thereby resulting in less nitrogen excretion in the manure. Manure that contains low amounts of nitrogen costs less to dispose than that having high amounts of nitrogen. Use of diets containing low levels of crude protein and supplementing them with commercial amino acids can lower the costs of poultry farmers significantly while complying with environmental regulations.
Spiral-Arm Sub-Structures in the Asymmetrical Dust Rings of the Circumstellar Disk MWC 758
Creators: name: Shen, Bo-Ting
name: Tang, Ya-Wen
name: Koch, Patrick M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Asymmetrical features in disks provide indirect evidences of embedded objects, such as planets. Observed with the Atacama Large Millimeter/submillimeter Array (ALMA), the circumstellar disk in MWC 758 traced with thermal dust continuum emission at wavelengths of 0.9 mm with an angular resolution up to 0.1" (15 au) exhibits an asymmetrical dust ring with additional features. In order to analyze the structures azimuthally and radially, we split the dust ring into small segments in azimuth. For each segment, we fit two-Gaussian functions to the radial intensity profile. The obtained best-fit parameters as a function of azimuth are analyzed. Three spiral-like arm structures are identified. When fitting the 0.9 mm features with the spiral density wave theory using the WKB approximation, two sets of disk aspect ratios are found: one solution gives relatively low values (~0.03) while the other solution is at the upper bound of the free parameter (~0.2). The planet locations suggested by the upper-bound result are similar to the ones determined by Benisty et al. (2015) for the NIR polarized intensity image. Comparing the reported spiral-like structures with the higher angular-resolution (0.04") ALMA image in Dong et al. (2018), we identify different structures in the West of the disk due to differences in the adopted analysis methods and the respective resolutions of the images.
description: Accepted for publication in ApJ. 21 Pages, 12 figures
Semi-automatic biological data mining workflow
Creators: name: Imène Chentli
name: Charleroy, Arnaud
name: Breton, Catherine Marie
Publisher: name: F1000Research
Year: 2015

description: Biological data is constantly growing. Multiple results, files and sources are brought online. Thus, biological databases are continuously enriched demonstrating that the web has become a primary source of information. However, these sources are raw and difficult to be analyzed manually by biologists. They require organization and a well-defined structure for their interrogation, filtering and retrieval.

On that point, we propose a semi-automatic method to biological data structuring and knowledge extraction via a web service. The method is implemented in the portable language Julia, through three main steps (1) connection to the "Entrez" portal (Global Query Cross-Database Search System of NCBI) and retrieval omics data regardless of the studied species, (2) cleaning, formatting and preprocessing the datasets and (3) data clustering, analysis and visualization of the results by applying two data mining approaches carried out under the R and Weka tools.

In this study, we focused exclusively on Archaea proteome with 2.1 million data available on NCBI. Our interest is particularly focused on the correlation between 5 attributes: organism, locus and name of genes, the predicted or given protein function and its length. It is also possible to take into account additional attributes such as phyla. The proposed method allows working with large amount of data. It is generic independent on the kingdom and studied macromolecules (DNA, RNA or proteins). Our approach also allows structuring and presenting data to experts in a format usable and supported by data mining tools such as R and Weka/bioWeka. As future work, our approach can be complemented by a dynamic interface to visualize the results. Python and R libraries can also be used for this purpose.
MEASURING THE EFFECTIVENESS OF COMMUNITY ENGAGEMENT IN MITIGATING CHEMICAL INDUSTRY DISASTER IMPACTS IN INDIA
Creators: name: CHINNA RAO P
name: VENKATESWARLU P
Publisher: name: Zenodo
Year: 2023
Subjects: Community Engagement, Disaster Management, Disaster Mitigation, Chemical Industry Disaster, Chemical Industry Disaster Management.

description: Abstract

This study delves into the evaluation of community engagement strategies in India aimed at mitigating the far-reaching impacts of chemical industry disasters. India, a rapidly developing nation with a growing chemical industry, faces significant challenges in disaster management in this sector. Through a comprehensive analysis of case studies and empirical data, this research examines the multifaceted aspects of community engagement, including risk communication, disaster preparedness, and collaborative decision-making. It highlights the importance of tailored communication approaches to account for India's cultural diversity and regional disparities, ensuring that risk information is accessible and comprehensible to all. The study underscores the crucial roles of local government and community-based organizations in facilitating effective engagement initiatives and addresses obstacles like bureaucratic complexities and resource constraints. By establishing a framework for measuring the effectiveness of community engagement in the Indian context, this research offers invaluable guidance to policymakers, chemical industry stakeholders, and community leaders, ultimately contributing to enhanced disaster resilience and safety in communities affected by chemical industry disasters in India.
Bounding the Minimal 331 Model through the Decay B -> X_s gamma
Creators: name: Promberger, Christoph
name: Schatt, Sebastian
name: Schwab, Felix
name: Uhlig, Selma
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the decay B -> X_s gamma within the framework of the minimal 331 model, taking into account both new experimental and theoretical developments that allow us to update and improve on an existing ten year old analysis. In contrast to several other flavor changing observables that are modified already at tree level from a new Z' gauge boson, we have only one loop contributions in this case. Nevertheless, these are interesting, as they may be enhanced and can shed light on the charged gauge boson and Higgs sector of the model. Numerically, we find that the Higgs sector, which is well approximated by a 2 Higgs doublet model (2HDM), dominates, since the gauge contributions are already very strongly constrained. With respect to B -> X_s gamma, the signal of the minimal 331 model is therefore nearly identical to the 2HDM one, which allows us to obtain a lower bound on the charged Higgs mass. Further, we observe, in analogy to the 2HDM model, that the branching fraction can be rather strongly increased for small values of tan beta. Also, we find that B -> X_s gamma has no impact on the bounds obtained on rare K and B decays in an earlier analysis.
description: 15 pages, 5 figures
Glueballs as the Ithaca of meson spectroscopy
Creators: name: Llanes-Estrada, Felipe J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This compact review about gluonium focuses on a slate of theoretical efforts; among the many standing works, I have selected several that are meant to assist in the identification, among ordinary mesons, of the few Yang-Mills glueball configurations that populate the energy region below 3 GeV. This includes $J/ψ$ radiative and vector-meson decays, studies of scalar meson mixing, of high-energy cross sections via the Pomeron and the odderon, glueball decays, etc. The weight of accumulated evidence seems to support the $f_0(1710)$ as having a large (and the largest) glueball component among the scalars, although no single observable by itself is conclusive. Further tests would be welcome, such as exclusive $f_J$ production at asymptotically high $s$ and $t$. No clear experimental candidates for the pseudoscalar or tensor glueball stand out yet, and continuing investigations trying to sort them out will certainly teach us much more about mesons.
description: 27 pages, 11 figure files