cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Using Leaked Power to Measure Intrinsic AGN Power Spectra of Red-Noise Time Series
Creators: name: Zhu, S. F.
name: Xue, Y. Q.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fluxes emitted at different wavebands from active galactic nuclei (AGNs) fluctuate at both long and short timescales. The variation can typically be characterized by a broadband power spectrum, which exhibits a red-noise process at high frequencies. The standard method of estimating power spectral density (PSD) of AGN variability is easily affected by systematic biases such as red-noise leakage and aliasing, in particular, when the observation spans a relatively short period and is gapped. Focusing on the high-frequency PSD that is strongly distorted due to red-noise leakage and usually not significantly affected by aliasing, we develop a novel and observable normalized leakage spectrum (NLS), which describes sensitively the effects of leaked red-noise power on the PSD at different temporal frequencies. Using Monte Carlo simulations, we demonstrate how an AGN underlying PSD sensitively determines the NLS when there is severe red-noise leakage and thereby how the NLS can be used to effectively constrain the underlying PSD.
description: Accepted for publication in ApJ (14 pages, 13 figures, 1 table)
title: Passing C*-correspondence relations to the Cuntz–Pimsner algebras
Creators: name: Eryüzlü, Menevşe
Publisher: name: Mathematisches Institut (Universität Münster)
Year: 2023

description: We construct a functor that maps C*-correspondences to their Cuntz–Pimsner algebras. Applications include a generalization of the well-known result of Muhly and Solel: Morita equivalent C*-correspondences have Morita equivalent Cuntz–Pimsner algebras; as well as the result of Muhly, Pask, and Tomforde: regular strong shift equivalent C*-correspondences have Morita equivalent Cuntz–Pimsner algebras.
Particle size controlled magnetic loss in magnetite nanoparticles in RF-microwave region
Creators: name: Jadav, Mudra
name: Bhatnagar, S. P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Frequency dependant complex magnetic permeability is used to understand RF-microwave behaviour of magnetic nanoparticles in the frequency range 250 MHz to 3 GHz. The stable dispersions of Fe3O4 nanoparticles with mean size varying between 11 to 16 nm are prepared for this purpose. The effect of mean particle size and external static magnetic field over microwave absorption properties of magnetic fluid is studied. It is observed that frequency of ferrimagnetic resonance, frequency of maximum absorption, loss tangent and reflection loss (RL) can be controlled by modifying mean particle size and strength of applied external static magnetic field. This kind of study can be useful for radio-microwave devices like tunable attenuator, EM sheilder, and other applications like Hyperthermia.
description: 13 pages, 10 figures, 2 tables
To the Memory of Alexander Grothendieck: a Great and Mysterious Genius of Mathematics
Creators: name: Bietenholz, Wolfgang
name: Peixoto, Tatiana
Publisher: name: arXiv
Year: 2016
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics

description: In November 2014 Alexander Grothendieck passed away at the age of 86. There is no doubt that he was one of the greatest and most innovative mathematicians of the 20th century. After a bitter childhood, his meteoric ascent started in the Cartan Seminar in Paris, it led to a breakthrough while he worked in Sao Paulo, and to the Fields Medal. He introduced numerous new concepts and techniques, which were involved in the groundbreaking solutions to long-standing problems. However, dramatic changes were still ahead of him. In recent years hardly anybody knew where he was living, and even if he was still alive; he had withdrawn to a modest life in isolation. Also beyond his achievements in mathematics, Grothendieck was an extraordinary person. This is a tribute of his fascinating life.
description: 20 pages, LaTex (abstract in English and Portuguese)
Ingenieurdienstleister
Creators: name: Holtrup, André
Publisher: name: Arbeitnehmerkammer Bremen
Year: 2018
Subjects: subject: Ingenieurdienstleistungen
subject: Beschäftigungssicherheit
subject: 330

description: Spezialisierte Ingenieurdienstleister stellen ihren Kunden Personal über die Arbeitnehmerüberlassung zur Verfügung oder übernehmen größere Arbeitspakete in Form von Dienst- und Werkverträgen. Obwohl diese Branche in den letzten Jahren rasant wächst, ist bisher nur wenig über sie bekannt. Am Institut Arbeit und Wirtschaft wurde in einem empirischen Projekt zum einen ein Überblick über die Branche erstellt und Nutzungsmotive von Kundenunternehmen herausgearbeitet. Zum anderen wurde untersucht, welche Arbeits- und Beschäftigungsbedingungen sie ihren Beschäftigten bieten. Insgesamt wird deutlich, dass die wachsende Bedeutung von Ingenieurdienstleistern nicht unbedingt mit der Prekarisierung eines hochqualifizierten Beschäftigungssegments gleichzusetzen ist. Auch wenn es sich formal zumeist um Arbeitnehmerüberlassung und Werkvertragsarbeit handelt, folgt die Beauftragung in diesem Bereich doch spezifischen Nutzungsmotiven. Beschäftigte haben im Vergleich zu einer Direkteinstellung bei großen Kunden zwar leichte Abstriche beim Einkommen hinzunehmen und ihre Beschäftigungssicherheit ist geringer einzuschätzen. Dafür bieten ihnen Ingenieurdienstleister jedoch häufig auch sehr abwechslungsreiche Tätigkeiten und gute berufliche Entwicklungsmöglichkeiten.
HadISDH.marine Update Document version 1.0.0.2019f
Creators: name: Willett, Kate
Publisher: name: Zenodo
Year: 2020
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: HadISDH.marine update document covering the latest changes in version 1.0.0.2019f from previous versions.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1480/ Main files in this record: HadISDH.marine.1.0.0.2019f_update.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Dr Kate Willett. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Test of the universality of free fall with atoms in different spin orientations
Creators: name: Duan, Xiao-Chun
name: Deng, Xiao-Bing
name: Zhou, Min-Kang
name: Zhang, Ke
name: Xu, Wen-Jie
name: Xiong, Feng
name: Xu, Yao-Yao
name: Shao, Cheng-Gang
name: Luo, Jun
name: Hu, Zhong-Kun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We report a test of the universality of free fall (UFF) by comparing the gravity acceleration of the $^{87}$Rb atoms in $m_F=+1$ versus that in $m_F=-1$, where the corresponding spin orientations are opposite. A Mach-Zehnder-type atom interferometer is exploited to sequentially measure the free fall acceleration of the atoms in these two magnetic sublevels, and the resultant E$\rm{\ddot{o}}$tv$\rm{\ddot{o}}$s ratio is ${η_S} =(0.2\pm1.2)\times 10^{-7}$. This also gives an upper limit of $1.1\times 10^{-21}$ GeV/m for possible gradient field of the spacetime torsion. The interferometer using atoms in $m_F=\pm 1$ is highly sensitive to the magnetic field inhomogeneity, and a double differential measurement method is developed to alleviate the inhomogeneity influence. Moreover, a proof experiment by modulating the magnetic field is performed, which validates the alleviation of the inhomogeneity influence in our test.
description: 12 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:1503.00433
Gauge symmetry and dimensionality reduction of the anisotropic pressure Hessian
Creators: name: Carbone, Maurizio
name: Iovieno, Michele
name: Bragg, Andrew D
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Analyzing the fluid velocity gradients in a Lagrangian reference frame provides an insightful way to study the small-scale dynamics of turbulent flows, and further insight is provided by considering the equations in the eigenframe of the strain-rate tensor. The dynamics of the velocity gradient tensor is governed in part by the anisotropic pressure Hessian, which is a non-local functional of the velocity gradient field. This anisotropic pressure Hessian plays a key role in the velocity gradient dynamics, for example in preventing finite-time singularities, but it is difficult to understand and model due to its non-locality and complexity. In this work a gauge symmetry for the pressure Hessian is introduced to the eigenframe equations of the velocity gradient, such that when the gauge is added to the original pressure Hessian, the dynamics of the eigenframe variables remain unchanged. We then exploit this gauge symmetry to perform a rank reduction on the three-dimensional anisotropic pressure Hessian, which, remarkably, is possible everywhere in the flow. The dynamical activity of the newly introduced rank-reduced anisotropic pressure Hessian is confined to two dimensional manifolds in the three dimensional flow, and exhibits striking alignment properties with respect to the strain-rate eigenframe and the vorticity vector. The dimensionality reduction, together with the strong preferential alignment properties, leads to new dynamical insights for understanding and modelling the role of the anisotropic pressure Hessian in three-dimensional flows.
title: Using urban observations in numerical weather prediction: mathematical techniques for multi-scale data assimilation
Creators: name: Bell, Zackary
Publisher: name: University of Reading
Year: 2021

description: The skill of weather forecasts depends on the initial conditions obtained through data assimilation. Generation of accurate initial conditions for convection-permitting nu�merical weather prediction (NWP) requires assimilation of a large number of near�surface observations of high resolution. To optimally extract information from high�resolution observations, methods of data assimilation must compensate for the un�certainty due to unresolved scales. Here, we examine uncertainty due to unresolved scales from two perspectives: crowdsourced vehicle-based observations and data as�similation. To investigate the potential of crowdsourced observations for convection�permitting NWP, we examine a novel vehicle-based temperature dataset. A new quality-control procedure is developed for the vehicle-based temperature dataset. Approximately 75% of the dataset fails quality-control primarily due to missing or inaccurate metadata. The characteristics of quality-controlled data are explored through comparison with other meteorological datasets. We find that the uncer�tainty of vehicle-based observation-model comparisons is likely weather-dependent and possibly vehicle-dependent. We investigate two different methods to account for observation uncertainty due to unresolved scales in data assimilation. The standard approach includes the uncertainty due to unresolved scales in the observation error covariance matrix. The alternative approach, used by the Schmidt-Kalman filter (SKF), considers the variability of the small-scale processes to estimate the large�scale state. It is shown that the SKF is most suitable in regimes of high uncertainty due to unresolved scales and low instrument uncertainty. The SKF is extended to a novel ensemble transform formulation suitable for nonlinear models and shown to be most beneficial when the uncertainty due to unresolved scales is greater than the instrument uncertainty. We conclude that crowdsourced observations can help fill the gap in near-surface observations for convection-perimitting NWP. Our new ensemble transform SKF has the potential to account for the associated uncertainty due to unresolved scales in their assimilation.
A non-PSLQ route to BBP-type formulas
Creators: name: Adegoke, Kunle
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 65B10, 11B99

description: BBP-type formulas are usually discovered experimentally, through computer searches. In this paper, however, starting with two simple generators, and hence without doing any computer searches, we derive a wide range of BBP-type formulas in general bases. Many previously discovered BBP-type formulas turn out to be particular cases of the formulas derived here.
IAIN Ponorogo Webometrics dan PTKIN di Indonesia, Prestasi dan Strategi Peningkatan
Creators: name: Wahid, Soleh Hasan
Publisher: name: Zenodo
Year: 2023
Subjects: subject: IAIN Ponorogo
subject: PTKIN
subject: PTKIN Indonesia
subject: Webometrics
subject: Webometrics Ranking Universities
subject: https://elkariem.id/iain-ponorogo-webometrics-dan-ptkin-di-indonesia-prestasi-dan-strategi-peningkatan/

description: IAIN Ponorogo webometrics telah menunjukkan kemajuan dalam peringkat Webometrics di Indonesia, tetapi masih memiliki ruang untuk perbaikan. Dalam analisis ini, IAIN Ponorogo memiliki Impact Rank yang cukup baik, menunjukkan kemampuan dalam mendapatkan perhatian dan tautan eksternal. Namun, terdapat peluang untuk meningkatkan Openness Rank dan Excellence Rank, yang menggambarkan aksesibilitas sumber daya publikasi dan kualitas riset universitas. Kesimpulan juga mencakup analisis SWOT (Strengths, Weaknesses, Opportunities, Threats) untuk IAIN Ponorogo, yang menyoroti kekuatan dan kelemahan universitas, peluang untuk memanfaatkan platform digital dan kolaborasi internasional, serta ancaman persaingan dengan institusi lain. Saran untuk IAIN Ponorogo mencakup upaya untuk meningkatkan konten situs web, meningkatkan keterbukaan publikasi, dan meningkatkan kualitas riset yang dipublikasikan. Kesimpulannya, IAIN Ponorogo adalah institusi pendidikan keagamaan yang terkemuka di Indonesia, tetapi dengan fokus pada perbaikan tertentu, mereka dapat terus meningkatkan reputasi mereka baik di tingkat nasional maupun internasional.
Extraction of the translational Eucken factor from light scattering by molecular gas
Creators: name: Wu, Lei
name: Liu, Haihu
name: Ubachs, Wim
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Although the thermal conductivity of molecular gases can be measured straightforwardly and accurately, it is difficult to experimentally determine its separate contributions from the translational and internal motions of gas molecules. Yet this information is critical in rarefied gas dynamics as the rarefaction effects corresponding to these motions are different. In this paper, we propose a novel methodology to extract the translational thermal conductivity (or equivalently, the translational Eucken factor) of molecular gases from the Rayleigh-Brillouin scattering (RBS) experimental data. From the numerical simulation of the \cite{LeiJFM2015} model we find that, in the kinetic regime, in addition to bulk viscosity, the RBS spectrum is sensitive to the translational Eucken factor, even when the total thermal conductivity is fixed. Thus it is not only possible to extract the bulk viscosity, but also the translational Eucken factor of molecular gases from RBS light scattering spectra measurements. Such experiments bear the additional advantage that gas-surface interactions do not affect the measurements. For the first time, bulk viscosities (due to the rotational relaxation of gas molecules only) and translational Eucken factors of N2, CO2 and SF6 are simultaneously extracted from RBS experiments.
Ultrarelativistic bound states in the spherical well
Creators: name: Żaba, Mariusz
name: Garbaczewski, Piotr
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We address an eigenvalue problem for the ultrarelativistic (Cauchy) operator $(-Δ)^{1/2}$, whose action is restricted to functions that vanish beyond the interior of a unit sphere in three spatial dimensions. We provide high accuracy spectral datafor lowest eigenvalues and eigenfunctions of this infinite spherical well problem. Our focus is on radial and orbital shapes of eigenfunctions. The spectrum consists of an ordered set of strictly positive eigenvalues which naturally splits into non-overlapping, orbitally labelled $E_{(k,l)}$ series. For each orbital label $l=0,1,2,...$ the label $k =1,2,...$ enumerates consecutive $l$-th series eigenvalues. Each of them is $2l+1$-degenerate. The $l=0$ eigenvalues series $E_{(k,0)}$ are identical with the set of even labeled eigenvalues for the $d=1$ Cauchy well: $E_{(k,0)}(d=3)=E_{2 k}(d=1)$. Likewise, the eigenfunctions $ψ_{(k,0 )}(d=3)$ and $ψ_{2k }(d=1)$ show affinity. We have identified the generic functional form of eigenfunctions of the spherical well which appear to be composed of a product of a solid harmonic and of a suitable purely radial function. The method to evaluate (approximately) the latter has been found to follow the universal pattern which effectively allows to skip all, sometimes involved, intermediate calculations (those were in usage, while computing the eigenvalues for $l \leq 3$).
Prediction of Consolidation Parameters Using Artificial Neural Network Model & Regression Analysis: A Case study of Lege Tafo Area
Creators: name: Getu Dabi
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2021
Subjects: Artificial neural network, ANN, Multiple Regression analysis, Compression index & Recompression index, coefficient of consolidation, Index properties of soil.

description: The Coefficient of compression index (Cc) and Coefficient of recompression index (Cr) are
 important compressibility parameters to work out the consolidation settlement for fine-grained soil
 layers. These parameters can be obtained in the laboratory by conducting one-dimensional
 oedometer test on undisturbed samples. However, consolidation tests require high quality of
 undisturbed soil sample, costly and time-consuming. Therefore, it is important to determine
 consolidation parameters based on basic index soil property tests. In this research, it is attempted to
 evaluate and examine the artificial neural network (ANN) technique and multiple regression to
 estimates the soil compressibility parameters (Cc and Cr) based on conveniently measurable soil
 index properties. According to the ASTM and AASHTO, the soil in the study area is categorized as
 highly plastic clays. An artificial neural network (ANN) of two-layer feed forward back propagation,
 having input variables, hidden layer and target nodes algorithm have been applied to predict Cc and
 Cr index. The Levenberg-Marquardt method was used as the training algorithm and the hyperbolic
 tangent function as an activation function for both the hidden and output layers. The results showed
 that 4-5-1architecture is found to be quite satisfactory in predicting the Cc with a coefficient of
 correlation R2 of 0.89 and root mean square error, RMSE of 0.0207, whereas for Cr, 4-4-1
 architectures performs better with R2 of 0.88 and RMSE of 0.019. In the multiple regression
 analysis, R2 of 0.516 and 0.321 with RMSE of 0.063 and 0.0353 were found for Cc and Cr
 respectively. By comparing the values of the correlation coefficient, R2 and root mean square error,
 RMSE of the two methods used, it was revealed that ANN has the least error and the most
 Therefore, this study recommends estimating the compression index (Cc) and recompression index
 (Cr) from the newly developed equations from ANN and regression analysis.
CEDA Annual Report 2019 - 2020
Creators: name: Bennett, Victoria
Publisher: name: Zenodo
Year: 2020
Subjects: subject: data and information
subject: ecology and environment
subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85040468.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: This annual report presents key statistics for the year past (2019 - 2020) as well as a series of snapshots of activity, expressed as short highlights and short reports.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1489/ The publish date on this item was its original published date. This item was previously associated with content (as an official url) at: http://www.ceda.ac.uk/. This work was funded by: Natural Environment Research Council (NERC). Main files in this record: ceda_annual_report_2019-2020.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Miss Hayley Gray. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Metallbauer:in - Arbeitsprozesse des Beruflichen Handlungsfelds „Treppen und Geländer konstruieren, herstellen und montieren“
Creators: name: Meyne, Lisa
name: Werger, Andreas
Publisher: name: Universität Bremen
Year: 2023
Subjects: subject: Arbeitsprozess
subject: Arbeitsprozessanalyse
subject: Arbeitsprozessorientierung
subject: berufliche Handlungskompetenz
subject: berufliches Handlungsfeld
subject: Berufsausbildung
subject: Berufsbildung
subject: Kompetenzorientierung
subject: Kompetenzwerkstatt
subject: 370

description: Die Umsetzung von Arbeitsprozess- und Kompetenzorientierung in der Berufsbildung ist zu einer zentralen Herausforderung für Ausbildungspersonal und Lehrkräfte geworden. In Ausbildungsrahmenplänen wird darauf verwiesen, dass Kompetenzen unter Einbeziehung selbstständigen Planens, Durchführens und Kontrollierens zu fördern sind, und die Lernfelder der Rahmenlehrpläne sollen als Lernsituationen umgesetzt werden, die sich an beruflichen Arbeitsprozessen orientieren. Auch die Prüfungen sind mittlerweile arbeitsprozessorientiert zu gestalten: Auszubildende sollen zeigen können, dass sie Arbeitsaufträge umfassend bearbeiten können. Gründe genug also, sich eingehend mit Arbeitsprozessen auseinanderzusetzen. Was genau aber ist eigentlich ein Arbeitsprozess und wie lässt sich ein Arbeitsprozess so analysieren und beschreiben, dass sich die gewonnenen Erkenntnisse wiederum für die Gestaltung beruflicher Lehr-Lernprozesse gewinnbringend nutzen lassen? Auf diese Fragen gibt das vorliegende Handbuch „Metallbauer:in – Arbeitsprozesse des Beruflichen Handlungsfelds – Treppen und Geländer konstruieren, herstellen und montieren“ für das Berufsfeld der Metalltechnik beispielhaft Antworten. Es wird das Instrument der Arbeitsprozessmatrix vorgestellt, mit dem Ausbildungs- und Lehrpersonal einen leichten, strukturierten Zugang zur beruflichen Praxis von Facharbeiter:innen und Gesell:innen finden. Mithilfe der Arbeitsprozessmatrix können der Ablauf eines Arbeitsprozesses, die Arbeitsgegenstände, mit de-nen sich eine Fachkraft konfrontiert sieht, die Hilfsmittel, denen sie sich bedient, und die Anforderungen, denen sie gerecht werden muss, übersichtlich dargestellt werden. Das vorliegende Handbuch beschäftigt sich exemplarisch mit dem Beruflichen Handlungsfeld „Treppen und Geländer konstruieren, herstellen und montieren“ des Metallbaus. Zu diesem Handlungsfeld wurden drei Arbeitsprozessanalysen nach dem Konzept der Kompetenzwerkstatt durchgeführt und dokumentiert. In einem anschließenden Schritt wurden diese Arbeitsprozessanalysen zu einer Beschreibung des Beruflichen Handlungsfelds zusammengeführt.
Maulid di Ruang Digital, Ekspresi Publik Twitter tentang Nabi Muhammad
Creators: name: Wahid, Soleh Hasan
Publisher: name: Zenodo
Year: 2023
Subjects: maulid
maulid nabi
ruang digital
twitter
sentimen analysis

description: Dalam era digital ini, bagaimana netizen menyuarakan perasaan dan pandangannya tentang Maulid Nabi Muhammad di Twitter? Analisis sentimen menunjukkan gambaran kompleks dan beragam: dominasi sentimen positif yang penuh cinta dan penghormatan terhadap Nabi, namun tak luput dari kritik dan debat yang menyoroti berbagai perspektif. Di balik kata-kata dan hashtag, tergambar ekspresi publik tentang Nabi Muhammad, mencerminkan kedalaman perasaan dan keragaman pandangan dalam masyarakat digital kontemporer. Dalam kajian ini, sejumlah 250 tweet diambil sebagai sampel untuk mendalami pemahaman mengenai diskusi publik seputar Maulid Nabi Muhammad di ruang digital. Dengan menggunakan metode analisis sentimen, hasil menunjukkan beragam respon netizen – dari cinta dan penghormatan hingga kritik dan debat. Untuk memberikan visualisasi lebih jelas mengenai kata-kata yang sering muncul, word cloud digunakan dan hasilnya menegaskan beberapa kata kunci seperti “muhammad”, “prophet”, “allah”, dan “love”. Selain itu, topik modeling juga digunakan untuk mengidentifikasi tema-tema utama yang dibicarakan, memberikan gambaran komprehensif mengenai narasi dan isu-isu yang sedang hangat diperbincangkan terkait Maulid di ruang digital Twitter.
Prediction of CBR Value using Artificial Neural Network & Regression Analysis : A Case study of Burayu Town
Creators: name: Mekdes Dawit
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2021
Subjects: CBR, liquid limit, plastic limit, plasticity index, MDD, OMC, Burayu Artificial Neural Network, multiple nonlinear regression

description: California Bearing Ratio (CBR) is a useful method to assess the strength of different pavement layers by
 comparing them with the strength of standard crushed rock The main objective of this research is to find
 correlation between California Bearing Ratio with classification test parameters/index properties these are
 liquid limit, plastic limit, plasticity index, Optimum Moisture Content (OMC) and Maximum Dry Density
 (MDD) of soils taken from different places of burayu town so as to obtain accurate CBR values in less time.
 The research is descriptive research, CBR tests were performed on forty one soil samples by adopting primary
 and secondary data quantitative method of research approach was applied. Regarding to the quantitative
 data; Soil samples were disturbed and collected at a depth of 1 meter then tests are performed on SW-SM type
 (Well graded sand containing silt) soil in laboratory according to AASHTO and ASTM procedures to obtain
 the CBR value experimentally and on the other hand the correlation is established. Then prediction of CBR
 value by using index properties of the samples were done using multiple nonlinear as well as linear regression
 analysis, predictive equation by means of Artificial Neural Network in addition to STATA estimating with CBR
 as the dependent variable plus explanatory variables are liquid limit, plastic limit, plasticity index, Optimum
 Moisture Content (OMC) and Maximum Dry Density (MDD)
 The equations are developed by using genetic programing toolbox in MATLAB software as well as linear
 regression model using STATA software empirical correlation was found with a correlation coefficient R2 =
 0.9954 with average mean square error value of 0.043 for Neural Network then again R2 = 0.7927 and
 average mean square error value of 1.0763 for STATA therefore satisfactory empirical correlation was
 obtained by using Neural Network than linear regression. The results from analysis showed that all the
 explanatory variables were predicted with the explained variable better in Neural Network than in STATA.
 Among these variables, maximum dry density (MDD) is highly predicting for CBR value
Analysis of amplification mechanisms and cross-frequency interactions in nonlinear flows via the harmonic resolvent
Creators: name: Padovan, Alberto
name: Otto, Samuel E.
name: Rowley, Clarence W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We propose a framework that elucidates the input-output characteristics of flows with complex dynamics arising from nonlinear interactions between different time scales. More specifically, we consider a periodically time-varying base flow, and perform a frequency-domain analysis of periodic perturbations about this base flow; the response of these perturbations is governed by the harmonic resolvent, which is a linear operator similar to the harmonic transfer function introduced by Wereley (1991). This approach makes it possible to explicitly capture the triadic interactions that are responsible for the energy transfer between different time scales in the flow. For instance, perturbations at frequency $α$ are coupled with perturbations at frequency $ω$ through the base flow at frequency $ω-α$. We draw a connection with resolvent analsyis, which is a special case of the harmonic resolvent when evaluated about a steady base flow. We show that the left and right singular vectors of the harmonic resolvent are the optimal response and forcing modes, which can be understood as full spatio-temporal signals that reveal space-time amplification characteristics of the flow. We illustrate the method on examples, including a three-dimensional system of ordinary differential equations and the flow over an airfoil at near-stall angle of attack.
Role of the kinematics of probing electrons in electron energy-loss spectroscopy of solid surfaces
Creators: name: Nazarov, V. U.
name: Silkin, V. M.
name: Krasovskii, E. E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Inelastic scattering of electrons incident on a solid surface is determined by the two properties: (i) electronic response of the target system and (ii) the detailed quantum-mechanical motion of the projectile electron inside and in the vicinity of the target. We emphasize the equal importance of the second ingredient, pointing out the fundamental limitations of the conventionally used theoretical description of the electron energy-loss spectroscopy (EELS) in terms of the ``energy-loss functions''. Our approach encompasses the dipole and impact scattering as specific cases, with the emphasis on the quantum-mechanical treatment of the probe electron. Applied to the high-resolution EELS of Ag surface, our theory largely agrees with recent experiments, while some instructive exceptions are rationalized.
description: 9 pages, 9 figures
Supplementary Materials: Zacharski, Kruppa, Ferstl (2024): The readability of the non-binary gender star in German: Evidence from a lexical decision task
Creators: name: Zacharski, Lisa
name: Kruppa, Alexandra
name: Ferstl, Evelyn C.
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 520502
subject: Gender psychology
classificationCode: 520405
subject: Psycholinguistics (incl. speech production and comprehension)
classificationCode: 520505
subject: Social psychology

description: These are the Supplementary Materials for the AAM (Author Accepted Manucript of): Zacharski, L., Kruppa, A., Ferstl, E.C. "The readability of the non-binary gender star in German: Evidence from a lexical decision task" to be published in Special Topic of Social Psychological Bulletin. The gendered language (r)evolution: interdisciplinary insights into the interaction between gender and language. The study was not pre-registered.
A fully-coupled computational framework for large-scale simulation of fluid-driven fracture propagation on parallel computers
Creators: name: Giovanardi, Bianca
name: Serebrinsky, Santiago
name: Radovitzky, Raul
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The propagation of cracks driven by a pressurized fluid emerges in several areas of engineering, including structural, geotechnical, and petroleum engineering. We present a robust numerical framework to simulate fluid-driven fracture propagation that addresses the challenges emerging in the simulation of this complex coupled nonlinear hydro-mechanical response. We observe that the numerical difficulties stem from the strong nonlinearities present in the fluid equations as well as those associated with crack propagation, from the quasi-static nature of the problem, and from the a priori unknown and potentially intricate crack geometries that may arise. An additional challenge is the need for large scale simulation owing to the mesh resolution requirements and the expected 3D character of the problem in practical applications. To address these challenges we model crack propagation with a high-order hybrid discontinuous Galerkin / cohesive zone model framework, which has proven massive scalability properties, and we model the lubrication flow inside the propagating cracks using continuous finite elements, furnishing a fully-coupled discretization of the solid and fluid equations. The parallel approach for solving the linearized coupled problem consists of standard iterative solvers based on domain decomposition. The resulting computational approach provides the ability to conduct highly-resolved and quasi-static simulations of fluid-driven fracture propagation with unspecified crack path. We conduct a series of numerical tests to verify the computational framework against known analytical solutions in the toughness and viscosity dominated regimes and we demonstrate its performance in terms of robustness and parallel scalability, enabling simulations of several million degrees of freedom on hundreds of processors.
Physical, Chemical and Bacteriological Quality of Injibara Town Drinking Water Supply from the Source to End Users‖
Creators: name: Beyenech Alimaw
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2021
Subjects: water quality, diseases, parameter, and water sources, unprotected.

description: Different Source of water for physical, chemical, and Bacteriological Evaluation were
 Boreholes, Hand dug well, spring, Tap, and reservoir. The great parts of residential people in the
 study area meet their daily water consumption fetching from traditional hand- dug, river, spring,
 and rainwater during rainy seasons, the injiabara town has no permanent proper sewage disposal
 site for disposing wastes. As result the community is exposed for different diseases such as
 diarrheal, Girdiaeass, Amaba, Malaria, and bacteria. Physical, Chemical, and Bacteriological
 quality assessment was conducted in the study area by took total 46 Water sample collected
 based on WHO standards). Analysis methods used in the study, Sulphate was determined by
 using a photometer; Calcium, magnesium, chloride, and bicarbonate were determined by the
 titrimetric method. And Sodium and potassium was analyzed using a flame photometer. Total
 hardness (TH) as CaCO-3, Calcium (Ca2+), (bicarbonate (HCO3-) were analyzed by volumetric
 methods. Temperature, PH, electrical conductivity (E.C), Total dissolve substances (TDS),
 Turbidity were conducted by Thermometer and Protablemulti parameter instrument respectively.
 Free chlorine residual, nitrates, were conducted by using DPD and nitrate powder. The isolation
 and enumeration of FC and TC were carried out using Membrane Filtration (MF) techniques.
 Physical characteristics of water (color, taste, and odor) are determined by senses of sight, smell
 and taste. Most of un protected sources and Tap water of analysis result shows above WHO and
 Ethiopia Standard .This is due to un protected sources are near to surface anthropogenic
 activities and Pipelines of distribution network have maintenance problem. Water quality
 organization must to be recognizing about water quality protection, management, and Select
 proper sewage disposal area away from water sources. Residential people also need treatment
 either of water to purify, remove temporary hardness of water to fit for drinking. In the area
 relatively high, pollution potential source resulted from agricultural activity, house holed sewage
 disposal, sewage discharge from unhygienic environment, Run off from asphalt roads and rivers.
 Interpretation of hydro chemical analysis shows that the groundwater in study area is fresh, soft
 to moderately hard. Hydrochemistry of 65% of the water sample is earth alkali water and the rest
 35 % is normal earth alkaline water with prevailing HCO3, HCO3 with SO4 and Cl
The shape of the extragalactic cosmic ray spectrum from Galaxy Clusters
Creators: name: Harari, Diego
name: Mollerach, Silvia
name: Roulet, Esteban
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the diffusive escape of cosmic rays from a central source inside a galaxy cluster to obtain the suppression in the outgoing flux appearing when the confinement times get comparable or larger than the age of the sources. We also discuss the attenuation of the flux due to the interactions of the cosmic rays with the cluster medium, which can be sizeable for heavy nuclei. The overall suppression in the total cosmic ray flux expected on Earth is important to understand the shape of the extragalactic contribution to the cosmic ray spectrum for $E/Z<1$ EeV. This suppression can also be relevant to interpret the results of fits to composition-sensitive observables measured at ultra-high energies.
HadISDH.land Update Document version 4.3.1.2020f
Creators: name: Willett, Kate
Publisher: name: Zenodo
Year: 2021
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html

description: Update notes for HadISDH land.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1490/ Contact for resource: kate.willett@metoffice.gov.uk. Main files in this record: HadISDH.land.4.3.1.2020f_update.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Dr Kate Willett. Transferred to CEDA document repository community on Zenodo on 2022-11-24
First-forbidden transitions and stellar $β$-decay rates of Zn and Ge isotopes
Creators: name: Nabi, Jameel-Un
name: Cakmak, Necla
name: Stoica, Sabin
name: Iftikhar, Zafar
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: First-forbidden (FF) charge-changing transitions become relatively important for nuclei as their proton number increases. This is because the strength of allowed Gamow-Teller (GT) transitions decreases with increasing Z. The FF transitions play an important role in reducing the half-lives as against those calculated from taking the GT transitions alone into account. In this paper we calculate allowed GT as well as $0^{+} \rightarrow 0^{-}$ and $0^{+} \rightarrow 2^{-}$ transitions for neutron-rich Zn and Ge isotopes. Two different pn-QRPA models were used with a schematic separable interaction to calculate GT and FF transitions. Half-lives calculated after inclusion of FF transitions were in excellent agreement with the experimental data. Our calculations were also compared to previous QRPA calculations and were found to be in better agreement with measured data. Stellar $β$-decay rates were calculated for these nuclei including allowed GT and unique FF transitions for astrophysical applications. $^{86,88}$Ge has a sizeable contribution to the total stellar rate from unique FF transitions.
description: 21 pages, 8 figures, 2 tables. arXiv admin note: text overlap with arXiv:1211.6968
Bibliometric Analysis of the Accounting Research in Intangible Capital Journal
Creators: name: Quesado, Patrícia
name: Rua, Susana
Publisher: name: International Journal of Business Innovation
Year: 2023

description: This study aims to analyze the research in accounting published in Intangible Capital journal in the last twelve years (2012-2022). The main goal is to identify past trends and future research opportunities. Based on bibliometric techniques, the study was carried out through the collection of papers published in Intangible Capital journal, in the period of 2012-2022. The area of financial accounting is the most studied, with studies on the private sector prevailing, applying predominantly a quantitative research approach and applying document and content analysis as the preferred data collection method. We highlight the works in co-authorship with 2 and 3 authors; the authors being mostly female and coming especially from Spanish universities, which is why Spain is the most studied country in the sample papers. Therefore, the areas of public accounting and teaching and research in accounting are areas that are not yet properly represented in this journal.
description: International Journal of Business Innovation, Volume 2 Issue 3 (2023)
HadISDH.marine Update Document version 1.1.0.2020f
Creators: name: Willett, Kate
Publisher: name: Zenodo
Year: 2021
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html

description: Update notes for HadISDH.marine.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1491/ Contact for resource: kate.willett@metoffice.gov.uk. Main files in this record: HadISDH.marine.1.1.0.2020f_update.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Dr Kate Willett. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Budgetary Control and Financial Performance of Manufacturing SMEs in Osun State, Nigeria
Creators: name: Fasesin, O. O.
name: Ogunrinade, R.
name: Olalekan, Ola T.
name: Ayo-Oyebiyi, G. T.
name: Sajuyigbe, Ademola Samuel
Publisher: name: International Journal of Business Innovation
Year: 2023

description: The study determines the various types of budgets used by SMEs and determines the influence of budgetary control on financial performance of SMEs in Osun State, Nigeria. The sampling method used was purposive, while semi closed ended questionnaires were sent to 250 SME operators/managers to collect information on the different types of budgeting used, budget control, and financial performance of their SMEs. A total of 200 completed questionnaires were completed and returned to researcher. The results of simple percentage reveal that approximately 60% of small businesses used budgets, while approximately 40% of small businesses do not. It was further revealed that most SME operators frequently used types of budgets such as sales budget and cash budget, capital budget, and inventory budget while the least frequently used budgets were marketing budget and personnel by the SMEs in Osun State Nigeria. The results also confirm that the majority of SMEs review their budgets, prepare their budgets, and review their financial performance on a monthly basis. Additionally, regression analysis of the model showcases that budgetary control has a significant influence on financial performance of SMEs. This implies that budget control is a powerful management tool that helps managers carefully analyze all existing operations, and assists SMEs to improve financial performance and sustainability amid global competitive environment. Subsequently, the study recommends that SMEs should organize seminars, workshops, and short courses on the different types of budgets available to make effective decisions terms in terms of an organization's desired performance in pursuing short-term goals. This allows small businesses to accelerate their operational plans and focus on achieving their desired goals.
description: International Journal of Business Innovation, Volume 2 Issue 3 (2023)
Probabilistic Graphical Models on Multi-Core CPUs using Java 8
Creators: name: Masegosa, Andres R.
name: Martinez, Ana M.
name: Borchani, Hanen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In this paper, we discuss software design issues related to the development of parallel computational intelligence algorithms on multi-core CPUs, using the new Java 8 functional programming features. In particular, we focus on probabilistic graphical models (PGMs) and present the parallelisation of a collection of algorithms that deal with inference and learning of PGMs from data. Namely, maximum likelihood estimation, importance sampling, and greedy search for solving combinatorial optimisation problems. Through these concrete examples, we tackle the problem of defining efficient data structures for PGMs and parallel processing of same-size batches of data sets using Java 8 features. We also provide straightforward techniques to code parallel algorithms that seamlessly exploit multi-core processors. The experimental analysis, carried out using our open source AMIDST (Analysis of MassIve Data STreams) Java toolbox, shows the merits of the proposed solutions.
description: Pre-print version of the paper presented in the special issue on Computational Intelligence Software at IEEE Computational Intelligence Magazine journal
Data Repository. Zacharski, Kruppa, Ferstl (2024): The readability of the non-binary gender star in German: Evidence from a lexical decision task
Creators: name: Zacharski, Lisa
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 520502
subject: Gender psychology
classificationCode: 520505
subject: Social psychology
classificationCode: 520405
subject: Psycholinguistics (incl. speech production and comprehension)

description: This is the data repository for: Zacharski, L., Kruppa, A., Ferstl, E.C. "The readability of the non-binary gender star in German: Evidence from a lexical decision task" to be published in Special Topic of Social Psychological Bulletin. The gendered language (r)evolution: interdisciplinary insights into the interaction between gender and language. The study was not pre-registered. The repository includes stimuli materials, raw data, a codebook, and the code used for data analysis.Please download the .zip-folder. Then follow the instructions in the READ_ME-document on how to use the repository.
Minimal Driver Nodes for Structural Controllability of Large-Scale Dynamical Systems: Node Classification
Creators: name: Doostmohammadian, Mohammadreza
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper considers the problem of minimal control inputs to affect the system states such that the resulting system is structurally controllable. This problem and the dual problem of minimal observability are claimed to have no polynomial-order exact solution and, therefore, are NP-hard. Here, adopting a graph-theoretic approach, this problem is solved for general nonlinear (and also structure-invariant) systems and a P-order solution is proposed. In this direction, the dynamical system is modeled as a directed graph, called \textit{system digraph}, and two types of graph components are introduced which are tightly related with structural controllability. Two types of nodes which are required to be affected (or driven) by an input, called \textit{driver nodes}, are defined, and minimal number of these driver nodes are obtained. Polynomial-order complexity of the given algorithms to solve the problem ensures applicability of the solution for analysis of large-scale dynamical systems. {The structural results in this paper are significant as compared to the existing literature which offer approximate and computationally less-efficient, e.g. Gramian-based, solutions for the problem, while this paper provides exact solution with lower computational complexity and applicable for controllability analysis of nonlinear systems.
description: accepted at IEEE Systems Journal