cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constraining subleading soft gluon and graviton theorems
Creators: name: Broedel, Johannes
name: de Leeuw, Marius
name: Plefka, Jan
name: Rosso, Matteo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the form of the recently proposed subleading soft graviton and gluon theorems in any dimension are severely constrained by elementary arguments based on Poincaré and gauge invariance as well as a self-consistency condition arising from the distributional nature of scattering amplitudes. Combined with the assumption of a local form as it would arise from a Ward identity the orbital part of the subleading operators is completely fixed by the leading universal Weinberg soft pole behavior. The polarization part of the differential subleading soft operators in turn is determined up to a single numerical factor for each hard leg at every order in the soft momentum expansion. In four dimensions, factorization of the Lorentz group allows to fix the subleading operators completely.
description: 17 pages. v2: Two references fixed, half sentence after eq. (13) added. v3: Terms in eq. (48) for S2G corrected
Is the Standard Model saved asymptotically by conformal symmetry?
Creators: name: Gorsky, A.
name: Mironov, A.
name: Morozov, A.
name: Tomaras, T. N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is pointed out that the top-quark and Higgs masses and the Higgs VEV satisfy with great accuracy the relations 4m_H^2=2m_T^2=v^2, which are very special and reminiscent of analogous ones at Argyres - Douglas points with enhanced conformal symmetry. Furthermore, the RG evolution of the corresponding Higgs self-interaction and Yukawa couplings λ(0)=1/8 and y(0)=1 leads to the free-field stable point λ(M_Pl)= \dot λ(M_Pl)=0 in the pure scalar sector at the Planck scale, also suggesting enhanced conformal symmetry. Thus, it is conceivable that the Standard Model is the low-energy limit of a distinct special theory with (super?) conformal symmetry at the Planck scale. In the context of such a "scenario" one may further speculate that the Higgs particle is the Goldstone boson of (partly) spontaneously broken conformal symmetry. This would simultaneously resolve the hierarchy and Landau pole problems in the scalar sector and would provide a nearly flat potential with two almost degenerate minima at the electroweak and Planck scales.
description: 13 pages
An analysis of the conditions referred to an eye emergency department
Creators: name: Hurley, Daire J
name: Neary, Simon
name: O’Neill, Evelyn
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Increasing numbers of patients are being referred to dedicated eye emergency departments, many of whom have non-acute issues. The aim of this study was to assess the most commonly referred conditions to an eye emergency department. A retrospective phone triage referral and clinical note audit was performed to assess the frequency of each condition referred to the ophthalmology emergency department over a two-month period. Diagnoses were grouped under headings to assess the volume of each sub-specialty referrals. 1700 patients referred to the eye emergency department were analyzed. The most commonly referred conditions were corneal foreign bodies (191), posterior vitreous detachments (101), and keratitis (87). The most commonly implicated categories were anterior segment (700), vitreoretinal (250), and adnexal & oculoplastics (247). 35.6% of patients (605/1,700) were referred on to an outpatients clinic. Seventy-five time-sensitive emergencies were identified, comprising 4.4% of all presentations. The frequency of conditions seen in our eye emergency department may closely reflect the prevalence of acute ophthalmic presentations. This study displays the wide range of conditions that are referred. This knowledge may assist in resource allocation and training of junior ophthalmologists.
A non-linear extension of the spin-2 partially massless symmetry
Creators: name: Garcia-Saenz, Sebastian
name: Rosen, Rachel A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the possibility of extending the "partially massless" symmetry of a spin-2 field in de Sitter to nonlinear order. To do so, we impose a closure condition on the symmetry transformations. This requirement imposes strong constraints on the form of the nonlinear symmetry while making only minimal assumptions about the form of the nonlinear partially massless action. We find a unique nonlinear extension of the free partially massless symmetry. However, we show that no consistent Lagrangian that contains at most two derivatives of the fields can realize this symmetry.
description: 22 pages
"HEPDATA_SMP-14-015_systematics.txt" of "Measurement of dijet azimuthal decorrelation in pp collisions at sqrt(s) = 8 TeV"
Creators: name: CMS Collaboration
Publisher: name: HEPData
Year: 2016

description: Systematics
description: CERN-LHC. A measurement of the decorrelation of azimuthal angles between the two jets with the largest transverse momenta is presented for seven regions of leading jet transverse momentum up to 2.2 TeV. The analysis is based on the proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb^{-1}. The dijet azimuthal decorrelation is caused by the radiation of additional jets and probes the dynamics of multijet production. The results are compared to fixed-order predictions of perturbative quantum chromodynamics (QCD), and to simulations using Monte Carlo event generators that include parton showers, hadronization, and multiparton interactions. Event generators with only two outgoing high transverse momentum partons fail to describe the measurement, even when supplemented with next-to-leading-order QCD corrections and parton showers. Much better agreement is achieved when at least three outgoing partons are complemented through either next-to-leading-order predictions or parton showers. This observation emphasizes the need to improve predictions for multijet production.
Equation of state at finite net-baryon density using Taylor coefficients up to sixth order
Creators: name: Huovinen, Pasi
name: Petreczky, Peter
name: Schmidt, Christian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We employ the lattice QCD data on Taylor expansion coefficients up to sixth order to construct an equation of state at finite net-baryon density. When we take into account how hadron masses depend on lattice spacing and quark mass, the coefficients evaluated using the p4 action are equal to those of hadron resonance gas at low temperature. Thus the parametrised equation of state can be smoothly connected to the hadron resonance gas equation of state. We see that the equation of state using Taylor coefficients up to second order is realistic only at low densities, and that at densities corresponding to s/n_B > 40, the expansion converges by the sixth order term.
description: 4 pages, 5 figures, proceedings of the XXIV Quark Matter conference, May 19-24 2014, Darmstadt, Germany
The conceptual development of control in management and accounting theory : 1900-1979
Creators: name: Parker., Lee David
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
"HEPDATA_SMP-14-015_correlationTables.txt" of "Measurement of dijet azimuthal decorrelation in pp collisions at sqrt(s) = 8 TeV"
Creators: name: CMS Collaboration
Publisher: name: HEPData
Year: 2016

description: Correlation Tables
description: CERN-LHC. A measurement of the decorrelation of azimuthal angles between the two jets with the largest transverse momenta is presented for seven regions of leading jet transverse momentum up to 2.2 TeV. The analysis is based on the proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb^{-1}. The dijet azimuthal decorrelation is caused by the radiation of additional jets and probes the dynamics of multijet production. The results are compared to fixed-order predictions of perturbative quantum chromodynamics (QCD), and to simulations using Monte Carlo event generators that include parton showers, hadronization, and multiparton interactions. Event generators with only two outgoing high transverse momentum partons fail to describe the measurement, even when supplemented with next-to-leading-order QCD corrections and parton showers. Much better agreement is achieved when at least three outgoing partons are complemented through either next-to-leading-order predictions or parton showers. This observation emphasizes the need to improve predictions for multijet production.
Observables for identity-based tachyon vacuum solutions
Creators: name: Kishimoto, Isao
name: Masuda, Toru
name: Takahashi, Tomohiko
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a modified KBc algebra in bosonic open string field theory expanded around identity-based scalar solutions. By use of the algebra, classical solutions on the background are constructed and observables for them, including energy densities and gauge invariant overlaps, are calculable. These results are applied to evaluate observables analytically for both of the identity-based trivial pure gauge solution and the identity-based tachyon vacuum solution.
description: 20 pages; v2: minor corrections
BIOPHYSICAL PROPERTIES - CPPDFD
Creators: name: DATTA, JAYDIP
Publisher: name: figshare
Year: 2020
Subjects: Cheminformatics

description: It is a Data Flow Diagram ( DFD ) applied to a Standard Object Oriented Programming Language C++( CPP ) .TheAlgorithm of the Programming language is executed to evaluate some Statistical Thermodymic Properties of Bio-Polymers like Radius of Gyration ( Rg ) , Number of Monomer units ( N ) , Root Mean Square end -end -separation (Rrms ) , Macroscopic & Microscopic properties of Biopolymers like Stability parameter vs Degree of Conversion fromtertiary structure to Random Coil .DFD also includes the Data Structure Coding of C -Programming also .
Event-by-event direct photon anisotropic flow in relativistic heavy-ion collisions
Creators: name: Shen, Chun
name: Paquet, Jean-Francois
name: Liu, Jia
name: Denicol, Gabriel
name: Heinz, Ulrich
name: Gale, Charles
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We consider directly emitted and hadronic decay photons from event-by-event hydrodynamic simulations. We compute the direct photon anisotropic flow coefficients and compare with recent experimental measurements. We find that it is crucial to include the photon multiplicity as a weighting factor in the definition of $v^γ_n$. We also investigate the sensitivity of the direct photon spectrum and elliptic flow to the theoretical uncertainty of the photon emission rate in the quark-hadron transition region and to the pre-equilibrium dynamics of relativistic heavy-ion collisions.
description: 4 pages, 3 figures, proceedings of the XXIV Quark Matter conference, May 19-24 2014, Darmstadt (Germany)
Windows Conda environment for NapaTrackMater and its corresponding Napari packages
Creators: name: Varun Kapoor, Mari Tolonen
Publisher: name: Zenodo
Year: 2023
Subjects: Conda, Mamba, Pypi, NapaTrackMater, Cuda, Torch, Tensorflow

description: Use this environment as a backup to open Napari applications that require NapaTrackMater by cloning it and making one for yourself using this command: conda create --name new_env_name --clone /path/to/myenvfolder/ After that you can update the NapaTrackMater and vollseg-napari-trackmate package and they should always work in this environment.
title: Известково- аммиачная селитра и реологические свойства её расплавов
Creators: name: Жураев, Н.Ё.
name: Намазов, Ш.С.
name: Маматалиев, А.А.
name: Сейтназаров, А.Р.
name: Беглов, Б.М.
Publisher: name: Tashkent State Technical University Named after Islam Karimov
Year: 2018

description: В работе определены: химический состав, прочность и скорость растворения гранул известково-аммиачной селитры, полученной на основе сплава нитрата аммония и известняка. Изучены реологические свойства расплавов известково-аммиачной селитры при соотношениях NH4NO3 : СаСO3 = 100 : (5-80) и температурах от 160 до 185ºС. Показано, что плотность и вязкость расплава значительно повышаются с увеличением в нём количества известняка. Вязкость расплавов более отзывчива на изменение температуры, а плотность меняется незначительно. Наименьшее значение плотности и вязкости имеет расплав, полученный в случае применения известняка Жамансайского месторождения. Расплавы известково-аммиачной селитры в широком интервале соотношений NH4NO3 : СаСO3 и температур обладают достаточно хорошей текучестью, и их можно легко гранулировать в гранбашне методом приллирования.
"systematics_276TeV.html" of "Measurement of the inclusive jet cross section in pp collisions at sqrt(s) = 2.76 TeV"
Creators: name: CMS Collaboration
Publisher: name: HEPData
Year: 2016

description: Detailed systematics for the cross section measurement
description: CERN-LHC. The double-differential inclusive jet cross section is measured as a function of jet transverse momentum pT and absolute rapidity y, using proton-proton collision data collected with the CMS experiment at the LHC, at a center-of-mass energy of sqrt(s) = 2.76 TeV and corresponding to an integrated luminosity of 5.43 inverse-picobarns. Jets are reconstructed within the pT range of 74 to 592 GeV and the rapidity range |y| < 3.0. The reconstructed jet spectrum is corrected for detector resolution. The measurements are compared to the theoretical prediction at next-to-leading-order QCD using different sets of parton distribution functions. This inclusive cross section measurement explores a new kinematic region and is consistent with QCD predictions.
Time-Warping Invariants of Multidimensional Time Series
Creators: name: Diehl, Joscha
name: Ebrahimi-Fard, Kurusch
name: Tapia, Nikolas
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: time series analysis
subject: time warping
subject: standing-still invariance
subject: signature
subject: quasisymmetric functions
subject: quasi-shuffle product
subject: Hoffman’s exponential
subject: area-operation
subject: Hopf algebra

description: In data science, one is often confronted with a time series representing measurements of some quantity of interest. Usually, in a first step, features of the time series need to be extracted. These are numerical quantities that aim to succinctly describe the data and to dampen the influence of noise. In some applications, these features are also required to satisfy some invariance properties. In this paper, we concentrate on time-warping invariants. We show that these correspond to a certain family of iterated sums of the increments of the time series, known as quasisymmetric functions in the mathematics literature. We present these invariant features in an algebraic framework, and we develop some of their basic properties.
DOES HUMAN DEVELOPMENT INFLUENCE ENERGY INTENSITY IN PAKISTAN? AN EMPIRICAL INSIGHT
Creators: name: ABDUL SHAKOOR
name: KHALID KHAN
name: MUHAMMAD ALI KAKAR
name: FARHATULLAH
Publisher: name: Zenodo
Year: 2024
Subjects: Energy Intensity, Human Development, ARDL and Pakistan.

description: Abstract

Over the past three decades, energy efficiency has become a central topic in global discussions, influencing economic interests and impacting various aspects such as energy, economics, social factors, environmental considerations, and national security. The determinants of changes in energy efficiency, including human development and the global shift in energy intensity, have gained prominence in debates at political, research, and scientific levels. This research shows that inefficient use of energy plays a dominant role in increasing the energy intensity in a country.Top of Form The well- known co-integration techniques of ARDL and ARDL bound test have been used to investigate the Impact of Human development on Energy Intensity in Pakistan.  The finding of study indicate that Higher Human Development (Education Level) is strongly and negatively associated with Energy Intensity, signifying that increased education levels lead to a substantial reduction in energy intensity and improve the efficiency of energy use in the economy. Foreign Direct Investment (FDI) demonstrates a noteworthy negative relationship with energy intensity, indicating that as FDI rises, there is a significant decrease in energy consumption per unit of output. Surprisingly, Trade Openness (TRO) shows a positive correlation with Energy Intensity, challenging traditional economic expectations. However, the study emphasizes the need for strategic measures to enhance energy efficiency and harmonize international trade with sustainable practices. The research also underscores a substantial negative relationship between exports (EXP) and Energy Intensity, suggesting economic growth potential through increased exports alongside energy efficiency. To reduce energy intensity in Pakistan, prioritize education for sustainable practices, attract Foreign Direct Investment (FDI) by streamlining regulations and promoting energy-efficient technologies, and implement strategic trade policies that balance economic gains with environmental considerations.
title: Методы выбора оснований, понижающих бивалентный дефект в системе остаточных классов
title: Methods for Selection of Bases Reducing Bivalent Defect in Residue Number System
Creators: name: Золотарева, Наталья Сергеевна
name: Инютин, Сергей Арнольдович
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье анализируется «бивалентный дефект» модуля в системе остаточных классов, или модулярной арифметике (явление естественной избыточности, возникающее при отображении вычетов модулярного представления числа в двоичных регистрах разрядной сетки специализированного модулярного процессора). Систематизированы методы уменьшения бивалентного дефекта. Рассматривается задача рационального выбора основания системы остаточных классов для уменьшения избыточности от бивалентного дефекта, поскольку основания модулярной арифметики, кроме, возможно, одного, взаимно просты со степенью двух, что приводит к определенной избыточности при отображении вычетов числа по каждому модулю.
description: The article analyzes the concept of a bivalent defect of modulus in the residue number system or modular arithmetic. This natural redundancy phenomenon occurs when the remainders of the modular representation of a number are displayed in binary registers of the bit grid in a specialized modular processor. Methods for reducing bivalent defects are systematized. The problem of rational choice of the modulus for the residue number system to reduce redundancy from a bivalent defect is analyzed. This choice is connected with the fact that all the moduli of modular arithmetic, except, possibly, for one, are coprime numbers with the power of two, which leads to a certain redundancy when displaying the modulo remainder.
"correlationMatrix_276TeV.html" of "Measurement of the inclusive jet cross section in pp collisions at sqrt(s) = 2.76 TeV"
Creators: name: CMS Collaboration
Publisher: name: HEPData
Year: 2016

description: Correlation matrices for the cross section measurement
description: CERN-LHC. The double-differential inclusive jet cross section is measured as a function of jet transverse momentum pT and absolute rapidity y, using proton-proton collision data collected with the CMS experiment at the LHC, at a center-of-mass energy of sqrt(s) = 2.76 TeV and corresponding to an integrated luminosity of 5.43 inverse-picobarns. Jets are reconstructed within the pT range of 74 to 592 GeV and the rapidity range |y| < 3.0. The reconstructed jet spectrum is corrected for detector resolution. The measurements are compared to the theoretical prediction at next-to-leading-order QCD using different sets of parton distribution functions. This inclusive cross section measurement explores a new kinematic region and is consistent with QCD predictions.
Green Synthesis of Nanoparticles
Creators: name: Dr. A. Jayasri1*
Publisher: name: The Science world a Monthly e magazine
Year: 2024

description: Nanotechnology is a novel and developing field of study with a wide range of applications. It involves the synthesis and application of materials called nanoparticles which are having dimensions of 1-100nm. Nowadays, the production of nanoparticles (NPs) is accomplished by a broad range of physico–chemical methods. But for medical and biological applications where the purity of the NPs is crucial, biogenic reduction of metal precursors to produce matching NPs is more cost-effective, environmentally benign, and free of chemical impurities.
Web-based demonstrations of the SENSEI model tools (reference guide)
Creators: name: Prior, Sara
name: Fernández, Manuel
name: Heras, José J. de las
name: Ramiro, Manuel
Publisher: name: Zenodo
Year: 2023
Subjects: pay-for-performance
energy efficiency
refurbishment

description: This document is a reference to navigate through the web tools developed within the project, particularly the SENSEI platform and its smart services. The information is aimed at final, nontechnical users while conveying the actions needed to graphically interact both with the tools and the data. That is, a guide through platform usage and capabilities via examples. A more technical version of these items is provided in deliverable 7.4, Functional design options for the SENSEI Platform and smart services, a deeper source of the context and implementations shown here.
A Brun-Titchmarsh inequality for weighted sums over prime numbers
Creators: name: Büthe, Jan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11N36, Secondary 11N13

description: We prove explicit upper bounds for weighted sums over prime numbers in arithmetic progressions with slowly varying weight functions. The results generalize the well-known Brun-Titchmarsh inequality.
description: 11 pages, to appear in Acta Arithmetica
title: Изучение процесса получения магнийсодержащей известковой аммиачной селитры
Creators: name: Набиев, А.А.
name: Реймов, А.М.
name: Намазов, Ш.С.
name: Беглов, Б.М.
Publisher: name: Tashkent State Technical University Named after Islam Karimov
Year: 2018

description: Приведены результаты изучения процесса получения магнийсодержащей известковой аммиачной селитры (ИАС) путем взаимодействия расплава нитрата аммония с доломитным минералом (ДМ) месторождения «Шорсу» Ферганской области. Массовое соотношение АС : ДМ менялось от 100 : 3 до 100 : 35. Для гранулирования нитратно-карбонатного расплава применён метод приллирования. Определены состав и свойства полученных удобрений. Показана возможность получения гранулированных удобрений с содержанием 25,49-32,77% азота, 0,90-8,09% СаО, 0,56-4,97% MgO и незначительного количества калия. Основная задача модифицирования АС – это повышение прочности гранул продукта. Показано, что если она у чистой аммиачной селитры равно 1,6 МПа, то для нового удобрения с соотношением АС : ДМ = 100 : 35 составляет 10,18 МПа.
Topological susceptibility and the sampling of field space in $N_f=2$ lattice QCD simulations
Creators: name: Bruno, Mattia
name: Schaefer, Stefan
name: Sommer, Rainer
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a measurement of the topological susceptibility in two flavor QCD. In this observable, large autocorrelations are present and also sizable cutoff effects have to be faced in the continuum extrapolation. Within the statistical accuracy of the computation, the result agrees with the expectation from leading order chiral perturbation theory.
description: 22 pages, 7 figures; References added, minor clarifications in the text, results unchanged
X-ray emission from an FU Ori star in early outburst: HBC 722
Creators: name: Liebhart, Armin
name: Guedel, Manuel
name: Skinner, Stephen
name: Green, Joel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims: We conducted the first X-ray observations of the newly erupting FU Ori-type outburst in HBC 722 (V2493 Cyg) with the aim to characterize its X-ray behavior and near-stellar environment during early outburst. Methods: We used data from the XMM-Newton and Chandra X-ray observatories to measure X-ray source temperatures and luminosities as well as the gas column densities along the line of sight toward the source. Results: We report a Chandra X-ray detection of HBC 722 with an X-ray luminosity of LX ~ 4E30 erg s-1. The gas column density exceeds values expected from optical extinction and standard gas-to-dust ratios. We conclude that dust-free gas masses are present around the star, such as strong winds launched from the inner disk, or massive accretion columns. A tentative detection obtained by XMM-Newton two years earlier after an initial optical peak revealed a fainter X-ray source with only weak absorption.
description: Accepted for Astronomy & Astrophysics Letters on September 17, 2014
title: Электромагнитное поле в равномерно изогнутом волноводе
title: The Electromagnetic Field in a Uniformly Curved Waveguide
Creators: name: Антипин, Дмитрий Павлович
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье рассматривается распространение электромагнитного поля в равномерно изогнутом волноводе с прямоугольным сечением. В криволинейных координатах, связанных с геометрией волновода, для случая с идеальными граничными условиями найдены компоненты векторного потенциала, а также электрического и магнитного полей. Были определены корни дисперсионного уравнения с учетом первой поправки по кривизне
1/R для продольной компоненты электрического поля.
description: The paper describes the propagation of an electromagnetic field in a uniformly curved waveguide with a rectangular cross-section. The components of electromagnetic fields and field potentials with ideal boundary conditions on the waveguide surface are found in the curvilinear coordinates associated with the waveguide geometry. The roots of the dispersion equation are determined with consideration of the first curvature correction 1/R for the longitudinal component of the electric field.
Lessons learned teaching Pangeo in the classroom
Creators: name: Crone, Tim
Publisher: name: Zenodo
Year: 2023

description: In this talk we look back over our 5-6 years of teaching Research Computing in Earth Science to first-year graduate students in Columbia University's Department of Earth and Environmental Science. We discuss the course content and flow, the value of the Pangeo platform for teaching, assignments and grading, data sources, and the class final projects. We also discuss some of the pedagogical mechanics which we have found to work best in the teaching of this material. The presentation ends with forward-looking questions about how this course can be extended into the advanced realm.
title: Пределы существования состояний слоя при ожижении неоднородной смеси «твердое тело-твердое тело»
Creators: name: Абдуллаев, А.Ш.
name: Аннаев, Н.А.
name: Нурмухамедов, Х.С.
name: Нигмаджанов, С.К.
Publisher: name: Tashkent State Technical University Named after Islam Karimov
Year: 2018

description: Проанализировано состояние слоев для систем “твердое тело-твердое тело” при ожижении в жидкой среде при наложении газового потока, а также рассмотрены критические скорости трехфазного псевдоожиженного слоя, экспериментальные данные по скорости начала псевдоожижения Reпс и уноса Reун тел неправильной формы, обобщенные в виде критериальных формул. Результаты по критическим скоростям незначительно отличаются от полученных расчетных формул. Полученные формулы описывают границы перехода состояний слоя в широком диапазоне изменения эквивалентного диаметра частиц неправильной формы. Показаны преимущества трехфазного псевдоожижения для вышеназванных тел сложной формы.
Borromean structures in medium-heavy nuclei
Creators: name: Hove, D.
name: Fedorov, D. V.
name: Fynbo, H. O. U.
name: Jensen, A. S.
name: Riisager, K.
name: Zinner, N. T.
name: Garrido, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Borromean nuclear cluster structures are expected at the corresponding driplines. We locate the regions in the nuclear chart with the most promising constituents, it being protons and alpha-particles and investigate in details the properties of the possible borromean two-alpha systems in medium heavy nuclei. We find in all cases that the alpha-particles are located at the surface of the core-nucleus as dictated by Coulomb and centrifugal barriers. The two lowest three-body bound states resemble a slightly contracted $^{8}\text{Be}$ nucleus outside the core. The next two excited states have more complex structures but with strong components of linear configurations with the core in the middle. Alpha-removal cross sections would be enhanced with specific signatures for these two different types of structures. The even-even borromean two-alpha nucleus, $^{142}$Ba, is specifically investigated and predicted to have $^{134}\text{Te}-α-α$ structure in its ground state and low-lying spectrum.
description: 18 pages, 21 figures, published version
Spinors, matrix structures, and projective geometry in polarization optics
Creators: name: Ovsiyuk, E.
name: Veko, O.
name: Neagu, M.
name: Balan, V.
name: Red'kov, V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 15A66, 78A25, 35Q60, 78A99, 81V10

description: The paper discusses the role played by Mueller and Jones formalisms in polarization optics, by addressing the following aspects: restriction to the SU(2) symmetry, non-relativistic Stokes 3-vectors; Cartan 2-spinors in polarization optics; Jones 4-spinors for partially polarized light; the linear group SL(4,R) and the classification of 1-parametric Mueller matrices; semi-group structure and classification of degenerate Mueller matrices.
description: 13 pages, Report to: Finsler Extensions of Relativity Theory (FERT-2013), 26 - 30 September 2013. Debrecen, Hungary
Optimized production of extracellular alkaline protease from Aspergillus tamarii with natural by-products in a batch stirred tank bioreactor
Creators: name: Nagarajan Arumugam
name: Balaji Dhandapani
name: Surianarayanan Mahadevan
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Proteolytic enzymes are one of the significant commercially manufactured enzymes. The manufacture of extracellular alkaline protease by Aspergillus tamarii MTCC5152 was explored using several agricultural by-products as substrates viz., cottonseed meal, wheat bran, skimmed milk and soya flour in submerged fermentation, were found to be efficient for enzyme production and commercially significant. Response surface methodology (RSM) is a statistics-based experimental design, sourced to explore the impact of physical parameters on the manufacture of protease from A. tamarii in a batch stirred tank bioreactor (STBR). The four substantial variables (pH, temperature, inoculum size, and agitation) were carefully chosen for optimization analyses and the statistical pattern was created using a central composite design and the quadratic model has been developed. The optimum conditions for protease production (1.51 U mL−1) where: pH 6.4, temperature 27 °C, inoculum size 2.6%, and agitation 327 rpm. The analysis revealed that the anticipated values were in accord with trial data with a correlation coefficient of 0.969.
Xarray-Datatree: Hierarchical Data Structures for Multi-Model Science
Creators: name: Nicholas, Tom
name: Busecke, Julius
Publisher: name: Zenodo
Year: 2023

description: Real scientific workflows often require working with many heterogeneous but related datasets. Examples in geoscience include: (1) scenario simulations by many different climate models in the same intercomparison project, (2) simulation data at multiple resolutions from a convergence scan or sub-grid-scale study, and (3) observational + simulation data of the same region. There is a need for a general high-level data structure which can organize such data in an accessible way, whilst still being flexible enough to adapt to the user’s mental model of their data. It should also be intuitive, so that simple operations such as calculating average climatologies are still simple to express. It should also serialize to a commonly-used data format, so as not to create backwards compatibility problems. The new xarray-datatree [1] package solves these problems, by providing a tree-like hierarchical data structure that is general enough to be useful in a wide variety of cases. Datatree extends xarray - generalizing xarray.Dataset to build upon an interface that many geoscientists are already familiar with. Analysis operations can be mapped over a whole tree, allowing simple operations to be expressed intuitively, even over complex heterogeneous datasets. Datatree is inspired by netCDF: Xarray’s highest-level object is currently an xarray.Dataset, which stores collections of arrays with a shared coordinate system and corresponds to a single group in a netCDF file. A DataTree object is instead a structured hierarchical collection of Datasets, and would map to multiple netCDF groups. Therefore serialization to and from netCDF files is possible with datatree, so backwards compatibility is maintained. We will explain the model of datatree, its relation to netCDF & Zarr, and how to use the data structure to simplify your own work. We will also give examples of using datatree with real geoscience datasets, such as CMIP6 model data. [2]
 [1] https://github.com/xarray-contrib/datatree
 [2] https://medium.com/pangeo/easy-ipcc-part-1-multi-model-datatree-469b87cf9114
Accelerating Cosmic Microwave Background map-making procedure through preconditioning
Creators: name: Szydlarski, Mikolaj
name: Grigori, Laura
name: Stompor, Radek
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: G.4; I.6; J.2

description: Estimation of the sky signal from sequences of time ordered data is one of the key steps in Cosmic Microwave Background (CMB) data analysis, commonly referred to as the map-making problem. Some of the most popular and general methods proposed for this problem involve solving generalised least squares (GLS) equations with non-diagonal noise weights given by a block-diagonal matrix with Toeplitz blocks. In this work we study new map-making solvers potentially suitable for applications to the largest anticipated data sets. They are based on iterative conjugate gradient (CG) approaches enhanced with novel, parallel, two-level preconditioners. We apply the proposed solvers to examples of simulated non-polarised and polarised CMB observations, and a set of idealised scanning strategies with sky coverage ranging from nearly a full sky down to small sky patches. We discuss in detail their implementation for massively parallel computational platforms and their performance for a broad range of parameters characterising the simulated data sets. We find that our best new solver can outperform carefully-optimised standard solvers used today by a factor of as much as 5 in terms of the convergence rate and a factor of up to $4$ in terms of the time to solution, and to do so without significantly increasing the memory consumption and the volume of inter-processor communication. The performance of the new algorithms is also found to be more stable and robust, and less dependent on specific characteristics of the analysed data set. We therefore conclude that the proposed approaches are well suited to address successfully challenges posed by new and forthcoming CMB data sets.
description: 19 pages // Final version submitted to A&A
Major advances in HoloViz for Pangeo: GUI explorer to build plots, easy interactive pipelines, and publishing in-browser apps
Creators: name: Bednar, James A.
Publisher: name: Zenodo
Year: 2022

description: Abstract:
 The HoloViz set of open-source Python libraries focus on making common tasks in data exploration, analysis, and visualization easier, faster, cloud-friendly, and more scalable. New releases in October 2022 bring major new capabilities relevant to existing and potential HoloViz users in Pangeo: (1) Panel apps can now be exported to standalone webassembly that runs entirely in the browser, so that you can share apps using simple file-sharing sites like github.io without needing any Python server. (2) Making those apps is now even simpler, using the more-powerful .interactive support of hvPlot -- just put widgets into your existing Pandas or xarray pipelines wherever there is a parameter you want to vary, to get a nearly instant Panel app for whatever you are working on right now. (3) Maybe you don't even need to code anything, because hvPlot now ships with an explorer that you can invoke in a Jupyter cell or as a standalone app that lets you explore your Pandas dataframe (or soon, Xarray Dataset or DataArray) flexibly, outputting the code to invoke that visualization for you to save for later. (4) If you alternate between exploring data, well supported using a Bokeh interactive plot, and publishing results, well supported with a Matplotlib plot, hvPlot now lets you choose to create either Matplotlib or Bokeh plots (or Plotly!) from the same .plot() specification, so that you don't have to switch tools when you go to publish and you can more easily integrate hvPlot output with hand-constructed Matplotlib plots. All together, these advances make it much easier to explore data, create plots, create apps, and share apps, so that Pangeans can focus on science and saving the planet!
title: Introduction: the HALT Ambrosia project
Creators: name: Sölter, Ulrike
name: Starfinger, Uwe
name: Verschwele, Arnd
Publisher: name: Julius Kühn-Institut
Year: 2016

description: Julius-Kühn-Archiv, Nr. 455 (2016): HALT Ambrosia - final project report and general publication of project findings
Human-Machine Adaptation in Lean Waste Elimination for Customized Building Manufacturing Systems
Creators: name: Xiong, Ruoxin
Publisher: name: Carnegie Mellon University
Year: 2024
Subjects: Civil Engineering not elsewhere classified

description:  The growing demand for customization in the building manufacturing industry has led to more frequent changeover operations, necessitating precise and effective adjustments to numerous control parameters to ensure production quality and efficiency. These adjustments often result in significant production waste, such as product scraps and stoppages. Currently, highly trained engineers manually develop these processes, seeking optimal parameter combinations to achieve satisfactory outcomes on production lines. On the other hand, the limited availability of experimental data and the high-dimensional search space present challenges for existing computer algorithms, impeding the development of accurate and robust learning models. To address these challenges, this study explores human-machine collaboration strategies to reduce the costs associated with complex manufacturing tuning processes. We designed a controlled virtual process game to systematically benchmark the performance of human engineers and computer algorithms, including Reinforcement Learning and Bayesian Optimization, in process control. Our platform captured and analyzed human-system dynamics across various manufacturing scenarios for operators with different backgrounds, providing insights into operator effectiveness and variability. We implemented and compared the performance of human operators and state-of-the-art algorithms, highlighting their strengths and improvement areas. Additionally, this study establishes an end-to-end framework for decoding cognitive behaviors and proposes a context-aware decision-making support method to improve decision quality and operational efficiency. We proposed and evaluated two distinct human-machine collaboration strategies—explicit and implicit—demonstrating the transformative potential of these approaches. Our findings suggest that a hybrid strategy, integrating human expertise with algorithmic capabilities, can improve the performance of manufacturing process control compared to using algorithms alone.
Taguchi analysis and asymmetric keto-reduction of acetophenone and its derivatives by soil filamentous fungal isolate: Penicillium rubens VIT SS1
Creators: name: Saravanan Jothi
name: Suneetha Vuppu
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology

description: Microbial asymmetric reduction of ketone is an efficient tool for the synthesis of chiral alcohols. This research focuses on exploring the soil fungal isolates for their ability toward the keto reduction of acetophenone and its derivatives to their corresponding chiral alcohols using growing cells. Bioreduction of acetophenone, 4-fluoro acetophenone, 4-methyl acetophenone, and 3-hydroxy acetophenone was carried out using different fungal cultures isolated from soil. Among the fungal isolates, Penicillium sp. and Aspergillus sp. showed significant bioconversion with varying enantio-selectivity. However, the Penicillium sp. has shown the maximum ability of bioreduction. The potential isolate was characterized using the internal transcribed spacer (ITS) region and found to be Penicillium rubens VIT SS1 (Genbank accession number: MK063869.1), which showed higher conversion and selectivity > 90%. The biocatalyst production and the reaction conditions were optimized using Taguchi analysis. The process conditions such as pH, temperature, media components, cosolvent, and substrate dosing were evaluated for the bioreduction of 3-hydroxy acetophenone, which is a key chiral intermediate of Phenylephrine and Rivastigmine using P. rubens VIT SS1. This study concludes about the potential of fungal cultures for sustainable synthesis of key chiral intermediates of Phenylephrine and Rivastigmine, similarly many aromatic chiral alcohols in simpler, novel, and cost-effective manner.
Quench action approach for releasing the Néel state into the spin-1/2 XXZ chain
Creators: name: Brockmann, Michael
name: Wouters, Bram
name: Fioretto, Davide
name: De Nardis, Jacopo
name: Vlijm, Rogier
name: Caux, Jean-Sébastien
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The steady state after a quantum quench from the Néel state to the anisotropic Heisenberg model for spin chains is investigated. Two methods that aim to describe the postquench non-thermal equilibrium, the generalized Gibbs ensemble and the quench action approach, are discussed and contrasted. Using the recent implementation of the quench action approach for this Néel-to-XXZ quench, we obtain an exact description of the steady state in terms of Bethe root densities, for which we give explicit analytical expressions. Furthermore, by developing a systematic small-quench expansion around the antiferromagnetic Ising limit, we analytically investigate the differences between the predictions of the two methods in terms of densities and postquench equilibrium expectation values of local physical observables. Finally, we discuss the details of the quench action solution for the quench to the isotropic Heisenberg spin chain. For this case we validate the underlying assumptions of the quench action approach by studying the large-system-size behavior of the overlaps between Bethe states and the Néel state.
description: 57 pages, 7 figures, v3: minor changes, references updated
A portable microfluidic device-based Fe3O4–urease nanoprobe-enhanced colorimetric sensor for the detection of heavy metals in fish tissue
Creators: name: Swain, Krishna Kumari
name: R. Balasubramaniam
name: Bhand, Sunil
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: A portable microfluidic device with highly sensitive enzyme nanoprobe (Fe3O4 MNPs–urease, average size 34.6 nm) was demonstrated for the analysis of heavy metals ions (Hg2+, Cd2+ and Pb2+) in fish gill and muscle tissue. The immobilized urease nanoprobe (Km = 0.05 mM) exhibited twofold sensitivity over the free enzyme assay (apparent Km = 0.1 mM). The nanoprobe was characterized using SEM, EDAX, PSA and FT-IR. The inhibition measurements were carried out for individual as well as the mixture of metal ions (CRM standards of 9 elements (CRMmix-9)). The lower limit of quantification (LOQ) (0.5, 0.1, and 0.1 ng L−1 for Hg2+, Cd2+, and Pb2+) and lower limit of detection (LOD) was achieved at 0.1 ng L−1 with sensitivity 8–14% per decade for Hg2+, Cd2+, and Pb2+ ions. A visual result can be observed by the naked eye through the microfluidic device as well as with 96 transparent microwell plates. The order of relative inhibition was found to be CRMmix-9 > (Hg2+ + Cd2+ + Pb2+) > (Cd2+ + Pb2+) > (Pb2+ + Hg2+) > (Hg2+ + Cd2+) > Pb2+ > Cd2+ > Hg2+, respectively. The recovery % in fish tissues were found to be 88–98% for Hg2+, Cd2+ and Pb2+ ions.