cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
FLEXURAL TESTING MACHINE AS AN OFF-LINE CONTROL SYSTEM FOR QUALITY MONITORING IN THE PRODUCTION OF BENDED CERAMIC TILES
Creators: name: Fragassa, Cristiano
Publisher: name: Center for Quality
Year: 2016
Subjects: Grés Porcelain
mechanical tests
equipment design
international standard
quality control

description: International Journal for Quality Research; Vol 10, No 2, 2016. ISSN 1800-6450
description: The capability to bend in a controlled manner Grès Porcelain stoneware tiles passing by a very exclusive process of pyroplastic deformation opens up entirely new opportunities in utilisation of this important family of ceramics. A bended tile can be exploited in innovative applications, such as stairs, shelves, benches and even radiators, turning this element from a simple piece of furnishing in a modern functional component. But this change in functionality also requires a different approach in the quality control, both at the product and process levels, that can no longer be limited to the use of tests specified in the regulations for traditional ceramics (e.g. colour, porosity, hygroscopic ...). This article describes the first device so far devised for the verification of resistance to bending of curved tiles, discussing the correct way of use. The adoption of this particular equipment as an off-line control device can represent a valid strategy for monitoring the product and process quality.
Tassazione progressiva del reddito e correzione del Fiscal Drag: effetti redistributivi e di benessere sociale
Creators: name: Lugaresi, Sergio
name: Toso, Stefano
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/03 Scienza delle finanze

description: Mediante il modello di microsimulazione ITAXMOD dell'ISPE, si valutano gli  effetti redistributivi, di progressività e di benessere sociale delle misure correttive del  fiscal drag da inflazione introdotte nel periodo 1976-1991, dapprima in modo parziale  e poi culminate in un meccanismo di aggiustamento totale e automatica  (indicizzazione dell'Irpef nel biennio 1990-91). Successivamente viene analizzato  l'impatto redistributivo di una soluzione alternativa all'indicizzazione, consistente dell'accorpamento degli scaglioni e nella riduzione del livello delle aliquote marginali.
Speeding Up MCMC by Efficient Data Subsampling
Creators: name: Quiroz, Matias
name: Kohn, Robert
name: Villani, Mattias
name: Tran, Minh-Ngoc
Publisher: name: Taylor & Francis
Year: 2018
Subjects: Space Science
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Information Systems not elsewhere classified
Mathematical Sciences not elsewhere classified

description: We propose subsampling Markov chain Monte Carlo (MCMC), an MCMC framework where the likelihood function for n observations is estimated from a random subset of m observations. We introduce a highly efficient unbiased estimator of the log-likelihood based on control variates, such that the computing cost is much smaller than that of the full log-likelihood in standard MCMC. The likelihood estimate is bias-corrected and used in two dependent pseudo-marginal algorithms to sample from a perturbed posterior, for which we derive the asymptotic error with respect to n and m, respectively. We propose a practical estimator of the error and show that the error is negligible even for a very small m in our applications. We demonstrate that subsampling MCMC is substantially more efficient than standard MCMC in terms of sampling efficiency for a given computational budget, and that it outperforms other subsampling methods for MCMC proposed in the literature. Supplementary materials for this article are available online.
Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam
Creators: name: Nie, Longzhi
name: Kong, Lingran
name: Gao, Tianyou
name: Dong, Nenghao
name: Jiang, Kaijun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We experimentally and theoretically characterize the temporal rotation and radial twist of the interference pattern of vortex beam with its conjugate copy. To quantitatively study the temporal rotation and radial twist, we controllably modify the conjugate beam with a frequency or wavefront curvature difference using a movable Mach-Zehnder interferometer. The effects of the physical parameters (i.e., the topological charge, frequency difference and wavefront curvature difference of the vortex beams) on the temporal rotation as well as radial twist are systematically explored. We further measure two parameters, the rotation velocity $Ω$ and twist coefficient $α$, respectively, to characterize the degree of the temporal rotation and radial twist of the interference pattern. The theory of the interference model on vortex beams have good agreements with the experimental results. This work is favorite to study the detailed structure of the interference pattern and manipulate matter with superimposed vortex beams.
description: 10 pages, 7 figures
ПУТИ СОЗДАНИЯ ЦЕНТРА ПО РЕАЛИЗАЦИИ ИНВЕСТИЦИОННЫХ ПРОЕКТОВ В СТРОИТЕЛЬНОЙ СФЕРЕ РЕСПУБЛИКИ УЗБЕКИСТАН – ТРЕБОВАНИЕ СЕГОДНЯШНЕГО ДНЯ
Creators: name: Джуманазаров, Ш.Т.
Publisher: name: Zenodo
Year: 2025

description: В статье рассматриваются актуальные вопросы совершенствования системы реализации инвестиционных проектов в строительной сфере Узбекистана. Анализируются существующие проблемы, предлагаются институциональные механизмы создания Центра по реализации инвестиционных проектов, обосновывается его необходимость и предлагается модель функционирования с учетом международного опыта.
Eremulus brasiliensis Perez-Inigo & Baggio 1985
Creators: name: Revelo-Tobar, Harol
name: Ojeda, Margarita
name: García-Ayala, Leonardo J.
name: Palacios-Vargas, José G.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Eremulidae
Eremulus
Eremulus brasiliensis

description: Eremulus brasiliensis Pérez-Íñigo & Baggio, 1985
 Distribution: Neotropical.
 Records in Mexico: Quintana Roo.
 Biogeographic province: Yucatan Peninsula.
 Habitat: Mangrove litter. Leaf litter and soil of medium sub evergreen forest, lowland forest, mangrove and halophyte vegetation.
 References: Vázquez (2008): 12; Vázquez et al. (2016): 147–162.
description: Published as part of Revelo-Tobar, Harol, Ojeda, Margarita, García-Ayala, Leonardo J. & Palacios-Vargas, José G., 2024, Checklist Of Oribatid Mites (Acari: Oribatida) From Mexico, pp. 1-178 in Zootaxa 5465 (1) on page 80, DOI: 10.11646/zootaxa.5465.1.1, http://zenodo.org/record/11613709
Local analysis of fast magnetic reconnection
Creators: name: Boozer, Allen H
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Fast magnetic reconnection is defined by the topology of the magnetic field lines changing on a timescale that is approximately an order of magnitude longer than the topology-conserving ideal-evolution timescale. Fast reconnection is an intrinsic property of Faraday's law when the evolving magnetic field depends non-trivially on all three spatial coordinates and is commonly observed -- even when the effects that allow topology breaking are arbitrarily small. The associated current density need only be enhanced by a factor of approximately ten and flows in thin but broad ribbons along the magnetic field. These results follow from the variation in the separation of neighboring pairs of magnetic field lines, which in an ideal evolution typically increases exponentially with time, and the existence of a spatial scale below which magnetic field lines freely change their identities due to non-ideal effects such as resistivity. Traditional reconnection theory ignores exponentially large variations and relies on the current density reaching a magnitude that is exponentially larger than is actually required. Here, an analysis of the behavior of magnetic field lines in the neighborhood of an arbitrarily chosen line is used to obtain more precise and rigorous results on intrinsic reconnection. The maximum parallel kinetic energy of collisionless charged particles is shown to have an exponential increase in time during a generic magnetic evolution.
Controlling degeneracy and magnetization switching in an artificial spin ice system of peanut-shaped nanomagnets
Creators: name: Chaurasiya, Avinash
name: Anand, Manish
name: Rawat, Rajdeep Singh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using extensive numerical simulations, we probe the magnetization switching in two-dimensional artificial spin ice (ASI) system consisting of peanut-shaped nanomagnets. We also investigated the effect of the external magnetic field on the degeneracy of the magnetic states in such a system. The switching field is found to be one order smaller in the proposed ASI system with peanut-shaped nanomagnets as compared to the conventionally used highly-anisotropic nanoisland such as elliptically shaped nanomagnets. The metastable 2-in/2-out (Type II) magnetic state is robust at the remanence. We are also able to access the other possible microstates corresponding to Type II magnetic configurations by carefully varying the external magnetic field. It implies that one can control the degeneracy of the magnetic state by the application of a suitable magnetic field. Interestingly, the magnetic charge neutrality breaks due to the defects induced by removing nanomagnets. In such a case, the system also appears to have a 1-out/3-in or 3-out/1-in (Type III) spin state, reminiscent of a magnetic monopole. We believe that our study is highly desirable in the context of developing the next-generation spintronics-based devices for future technologies.
description: 21 pages; 08 Figures
Radial velocity variability and evolution of hot subdwarf stars
Creators: name: Geier, S.
name: Dorsch, M.
name: Pelisoli, I.
name: Reindl, N.
name: Heber, U.
name: Irrgang, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hot subdwarf stars represent a late and peculiar stage in the evolution of low-mass stars, because they are likely formed by close binary interactions. Here we performed a radial velocity (RV) variability study of a sample of 646 hot subdwarfs with multi-epoch radial velocities from Sloan Digital Sky Survey (SDSS) and Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) spectra [...] As diagnostics we used the fraction of RV-variable stars and the distribution of the maximum RV variations $ΔRV_{\rm max}$. Both indicators turned out to be quite inhomogeneous across the studied parameter ranges. A striking feature is the completely different behaviour of He-poor and He-rich hot subdwarfs. While the former have a high fraction of close binaries, almost no significant RV variations could be detected for the latter. This led us to the conclusion that there likely is no evolutionary connection between these subtypes. Intermediate He-rich- and extreme He-rich sdOB/Os on the other hand are likely related. We conclude further that the vast majority of this population is formed via one or several binary merger channels. Hot subdwarfs with temperatures cooler than $\sim24\,000\,{\rm K}$ tend to show less and smaller RV-variations. These objects might constitute a new subpopulation of binaries with longer periods and late-type or compact companions. The RV-variability properties of the extreme horizontal branch (EHB) and corresponding post-EHB populations of the He-poor hot subdwarfs match and confirm the predicted evolutionary connection between them. Stars found below the canonical EHB at somewhat higher surface gravities show large RV-variations and a high RV-variability fraction, which is consistent with most of them being low-mass EHB stars or progenitors of low-mass helium white dwarfs in close binaries.
description: 28 pages, A&A accepted
Kwoma
Creators: name: Pitek, Emily
Publisher: name: Database of Religious History (DRH)
Year: 2020

description: The Kwoma inhabit the Peilungua Mountain Range, located northwest of the Sepik River in Papua New Guinea. The Kwoma are comprised of four autonomous sub-tribes: the Tangwishamp, the Urumbanj, the Koriasi, and the Hongwam; this entry focuses specifically on the Hongwam around the time of 1937. At this time, the Hongwam (hereafter referred to as Kwoma) had some contact with outsiders, including the Ambunti Police Post (and therefore the Australian government) which was located on the southeastern slope of Ambunti mountain. However, substantial culture change (including missionary influence) did not take place until after the time this entry focuses on. The Kwoma do not have an official political office; leadership positions are earned through age, knowledge, and ability. Also absent are official religious leaders; religious activities are performed by what ethnographers have named the Yam cult (because of the yam’s important connection with rituals and social groups). Membership in the highest section and possession of associated ritual knowledge is reserved exclusively for men who have gained importance in the community by having taken a head during a headhunting raid. Although the Kwoma do not have official political officials or religious leaders, the religious sphere of life is not differentiated from other aspects of life. Therefore, this entry considers the religious group to be coterminous with the society itself. A variety of supernatural beings are present, including ghosts and non-human supernatural beings (namely, those known as marsalai). Sorcery plays an important role in explaining sickness and death.
ESTIMATING THE LIFETIME PERFORMANCE INDEX OF PRODUCTS FOR TWO-PARAMETER EXPONENTIAL DISTRIBUTION WITH THE PROGRESSIVE FIRST-FAILURE CENSORED SAMPLE
Creators: name: Nadi, Adel Ahmadi
name: Gildeh, Bahram Sadeghpour
Publisher: name: Center for Quality
Year: 2016
Subjects: Lifetime performance index
Progressive first-failure censored sample
Two-parameter exponential distribution
Uniformly minimum variance unbiased estimator

description: International Journal for Quality Research; Vol 10, No 2, 2016. ISSN 1800-6450
description: In practice, Process capability indices such as lifetime performance index CL indicate the relationships between the actual process performance and the manufacturing specifications, where L is the lower specification limit and it is known. Progressive first-failure censoring scheme is quite useful in many practical situations where lifetime of a product is quite high and test facilities are scarce but test material is relatively cheap. This study, under the assumption of two-parameter exponential distribution and by applying data transformation constructs a uniformly minimum variance unbiased estimator (UMVUE) of CL based on a progressive first-failure censored sample. Then the UMVUE of CL is utilized to develop the new hypothesis testing procedure. Finally, two illustrative examples are given to assess the behavior of this test statistic for testing null hypothesis under given significance level.
IBIS-A: The IBIS data Archive. High resolution observations of the solar photosphere and chromosphere with contextual data
Creators: name: Ermolli, Ilaria
name: Giorgi, Fabrizio
name: Murabito, Mariarita
name: Stangalini, Marco
name: Guido, Vincenzo
name: Molinaro, Marco
name: Romano, Paolo
name: Guglielmino, Salvatore L.
name: Viavattene, Giorgio
name: Cauzzi, Gianna
name: Criscuoli, Serena
name: Reardon, Kevin P.
name: Tritschler, Alexandra
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The IBIS data Archive (IBIS-A) stores data acquired with the Interferometric BIdimensional Spectropolarimeter (IBIS), which was operated at the Dunn Solar Telescope of the US National Solar Observatory from 2003 to 2019. The instrument provided series of high-resolution narrowband spectropolarimetric imaging observations of the photosphere and chromosphere in the range 5800$-$8600 Å~ and co-temporal broadband observations in the same spectral range and with the same field of view of the polarimetric data. We present the data currently stored in IBIS-A, as well as the interface utilized to explore such data and facilitate its scientific exploitation. To this purpose we also describe the use of IBIS-A data in recent and undergoing studies relevant to solar physics and space weather research. IBIS-A includes raw and calibrated observations, as well as science-ready data. The latter comprise maps of the circular, linear, and net circular polarization, and of the magnetic and velocity fields derived for a significant fraction of the series available in the archive. IBIS-A furthermore contains links to observations complementary to the IBIS data, such as co-temporal high-resolution observations of the solar atmosphere available from the instruments onboard the Hinode and IRIS satellites, and full-disc multiband images from INAF solar telescopes. IBIS-A currently consists of 30 TB of data taken with IBIS during 28 observing campaigns performed in 2008 and from 2012 to 2019 on 159 days. Metadata and movies of each calibrated and science-ready series are also available to help users evaluating observing conditions. IBIS-A represents a unique resource for investigating the plasma processes in the solar atmosphere and the solar origin of space weather events.
description: 22 pages, 13 figures, accepted for publication in Astronomy and Astrophysics
Il ruolo dell'econometria nel carattere scientifico dell'economia politica
Creators: name: Cellini, Roberto
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/01 Economia politica

description: Il saggio vuole mostrare la contemporanea esistenza, sin dagli anni Trenta, di due distinti modi di intendere l'econometria: da un lato vi è chi ritiene che il lavoro empirico possa contribuire alla scientificità dell'economia politica, dall'altro chi lo nega, sostenendo che l'econometria non può essere di stimolo allo sviluppo del pensiero economico. Poiché la molteplicità di linee di ricerca è una delle caratteristiche dell'economia politica, non sorprende che non vi sia unanimità net modo di intendere il ruolo dell'econometria. Il dibattito su questi temi viene ripercorso a partire dalla fondazione dell'Econometric Society, con particolare attenzione ai problemi ed ai metodi dell'economia come scienza.
Commercio internazionale in presenza di comportamenti oligopolistici: un esempio di economie di puro scambio
Creators: name: Coredella, Tito
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/01 Economia politica

description: I modelli di concorrenza imperfetta sono stati, specie nell'ultimo decennio, ampiamente utilizzati dall'economia internazionale. Riconoscendo l'importanza strategica degli agenti, la teoria ha potuto rendere conto di una serie di fenomeni che i modelli tradizionali non riuscivano a spiegare e, allo stesso tempo, è stata in grado di suggerire nuove indicazioni di politica economica. Bisogna però ricordare che, mentre l'analisi tradizionale è un'analisi di equilibrio generale, i contributi della nuova economia internazionale, eccezion fatta per i modelli di concorrenza monopolistica, rimangono limitati all'equilibrio parziale. Se da un lato sarebbe estremamente interessante poter riconsiderare i modelli multisettoriali alla luce di comportamenti oligopolistici, dall'altro permangono difficoltà oggettive nell'introduzione di questi ultimo in modelli di equilibrio generale.
New mass estimates for massive binary systems: a probabilistic approach using polarimetric radiative transfer
Creators: name: Fullard, Andrew G.
name: O'Brien, John T.
name: Kerzendorf, Wolfgang E.
name: Shrestha, Manisha
name: Hoffman, Jennifer L.
name: Ignace, Richard
name: van der Smagt, Patrick
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Understanding the evolution of massive binary stars requires accurate estimates of their masses. This understanding is critically important because massive star evolution can potentially lead to gravitational wave sources such as binary black holes or neutron stars. For Wolf-Rayet stars with optically thick stellar winds, their masses can only be determined with accurate inclination angle estimates from binary systems which have spectroscopic $M \sin i$ measurements. Orbitally-phased polarization signals can encode the inclination angle of binary systems, where the Wolf-Rayet winds act as scattering regions. We investigated four Wolf-Rayet + O star binary systems, WR 42, WR 79, WR 127, and WR 153, with publicly available phased polarization data to estimate their masses. To avoid the biases present in analytic models of polarization while retaining computational expediency, we used a Monte Carlo radiative transfer model accurately emulated by a neural network. We used the emulated model to investigate the posterior distribution of parameters of our four systems. Our mass estimates calculated from the estimated inclination angles put strong constraints on existing mass estimates for three of the systems, and disagrees with the existing mass estimates for WR 153. We recommend a concerted effort to obtain polarization observations that can be used to estimate the masses of Wolf-Rayet binary systems and increase our understanding of their evolutionary paths.
description: 24 pages, 13 figures, accepted to ApJ
Industry, Postcolony, and the Immersive Arts of Environmental Storytelling (Slides)
Creators: name: Musiol, Hanna
Publisher: name: unknown
Year: 2022
Subjects: subject: Affect (Psychology)
subject: Postcolonialism
subject: Crowdsourcing
subject: Public art

description: PowerPoint Slides for the "Industry, Postcolony, and the Immersive Arts of Environmental Storytelling" talk delivered during the Global DH Symposium on March 24, 2022.
Graph-Guided Banding of the Covariance Matrix
Creators: name: Bien, Jacob
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Regularization has become a primary tool for developing reliable estimators of the covariance matrix in high-dimensional settings. To curb the curse of dimensionality, numerous methods assume that the population covariance (or inverse covariance) matrix is sparse, while making no particular structural assumptions on the desired pattern of sparsity. A highly-related, yet complementary, literature studies the specific setting in which the measured variables have a known ordering, in which case a banded population matrix is often assumed. While the banded approach is conceptually and computationally easier than asking for “patternless sparsity,” it is only applicable in very specific situations (such as when data are measured over time or one-dimensional space). This work proposes a generalization of the notion of bandedness that greatly expands the range of problems in which banded estimators apply. We develop convex regularizers occupying the broad middle ground between the former approach of “patternless sparsity” and the latter reliance on having a known ordering. Our framework defines bandedness with respect to a known graph on the measured variables. Such a graph is available in diverse situations, and we provide a theoretical, computational, and applied treatment of two new estimators. An R package, called ggb, implements these new methods. Supplementary materials for this article are available online.
Infrequent Permanent Shoks and Signal Extraction in Macroeconomic Time Series
Creators: name: Bianchi, Marco
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/01 Economia politica

description: A procedure based on density estimation is suggested  in the paper to discriminate trend stationary processes about local  linear time trends from difference stationary processes. A 'rule of thumb' is constructed to detect the suitability of a segmented trend  representation, and a regression analysis is used to identify the  number and the dates of structural breaks. The U.S. series of nominal wages over the period 1900-1970 is analysed according to the assumption the dynamics are driven by exogenous shocks which  occur infrequently. In a multivariate domain, implications of  segmented trend modeling for cointegration theory are also briefly  considered.
Industry, Postcolony, and the Immersive Arts of Environmental Storytelling (Slides)
Creators: name: Musiol, Hanna
Publisher: name: Humanities Commons
Year: 2022
Subjects: subject: Affect (Psychology)
subject: Crowdsourcing
subject: Postcolonialism
subject: Public art

description: PowerPoint Slides for the "Industry, Postcolony, and the Immersive Arts of Environmental Storytelling" talk delivered during the Global DH Symposium on March 24, 2022.
title: Ausschreibungen fuer erneuerbare Energien in Deutschland : Ausgestaltungsoptionen fuer den Erhalt der Akteursvielfalt
Creators: name: Jacobs, David
name: Peinl, Hannes
name: Gotchev, Boris
name: Schaeuble, Dominik
name: Matschoss, Patrick
name: Bayer, Benjamin
name: Kahl, Hartmut
name: Kahles, Markus
name: Mueller, Thorsten
name: Goldammer, Kathrin
Publisher: name: Institute for Advanced Sustainability Studies (IASS)
Year: 2014

description: IASS Working Paper
3D RMHD simulations of jet-wind interactions in High Mass X-ray Binaries
Creators: name: López-Miralles, J.
name: Perucho, M.
name: Martí, J. M.
name: Migliari, S.
name: Bosch-Ramon, V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The interaction of jets in High-Mass X-ray Binaries (HMXBs) with the strong winds driven by the hot companion star in the vicinity of the compact object is fundamental to understand the jet dynamics, non-thermal emission and long-term stability. However, the role of the jet magnetic field in this process is unclear. We study the dynamical role of weak and moderate-to-strong toroidal magnetic fields during the first hundreds of seconds of jet propagation, focusing on the magnetized flow dynamics and the mechanisms of energy conversion. We have developed the code Lóstrego v1.0, a new 3D RMHD code to simulate astrophysical plasmas in Cartesian coordinates. Using this tool, we performed the first 3D RMHD numerical simulations of relativistic magnetized jets propagating through the clumpy stellar wind in a HMXB. The overall morphology and dynamics of weakly magnetized jet models is similar to previous hydrodynamical simulations, where the jet head generates a strong shock in the ambient medium and the initial over-pressure with respect to the stellar wind drives one or more recollimation shocks. In the time scales of our simulations, these jets are ballistic and seem to be more stable against internal instabilities than jets with the same power in the absence of fields. However, moderate-to-strong toroidal magnetic fields favour the development of current-driven instabilities and the disruption of the jet within the binary. A detailed analysis of the energy distribution in the relativistic outflow and the ambient medium reveals that both magnetic and internal energies can contribute to the effective acceleration of the jet. We certify that the jet feedback into the ambient medium is highly dependent on the jet energy distribution at injection, where hotter, more dilute and/or more magnetized jets are more efficient, as anticipated by feedback studies in the case of jets in active galaxies.
description: 28 pages, 23 figures. Abstract shortened for arXiv. Accepted for publication in A&A
Un modello di Markow per l'analisi del mercato del lavoro
Creators: name: Pastorello, Sergio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/05 Econometria

description: Le inchieste nazionali sulla situazione del mercato del lavoro forniscono di solito osservazioni in tempo discreto. Gli individui vengono intervistati in corrispondenza di date distinte, per ognuna delle quali si conosce la loro posizione sul mercato (occupati, disoccupati), ma nulla è noto di quanto si è osservato fra le date di osservazione. Con questi dati non è possibile stimare modelli di durata multi-stato ed è necessario ricorrere a strumenti statistici fondati sulla classe dei processi markoviani omogenei in tempo continuo. Questo articolo applica un tale approccio a dati provenienti dalla Rilevazione Trimestrale sulle Forze di Lavoro, relativi alla regione Lombardia ed al periodo gennaio 1985- aprile 1986. Particolare attenzione viene dedicata alle restrizioni implicite imposte da questa classe di modelli, ed alle direzioni di ricerca che promettono di migliorare le proprietà e le performance empiriche.
Intervention techniques targeting echolalia (Dinello & Gladfelter, 2025)
Creators: name: Dinello, Adriana
name: Gladfelter, Allison
Publisher: name: ASHA journals
Year: 2025
Subjects: classificationCode: 420110
subject: Speech pathology
classificationCode: 460211
subject: Speech production

description: Purpose: Although echolalic speech is found in typical development, echolalia is most commonly associated with autism. As such, echolalia has frequently been the focus of various interventions aimed at autistic children. Recent research and the voices of autistic self-advocates indicate that echolalia serves as a meaningful form of communication or functionally supports self-regulation. As a result, the literature on how, or whether, to target echolalia in therapy is full of philosophically diverse approaches. To support evidence-based practice, the purpose of this scoping review was to inform speech-language clinicians about current research on interventions targeting echolalia and how disagreement on this topic may be affecting the autistic individuals we serve.Method: Search terms were entered into seven databases utilizing a key word search, and 74 total articles were included in this scoping review. Data on the intervention approach, outcomes, and participant demographics were then extracted for analysis.Results: Most interventions utilized principles of applied behavior analysis. Nearly all studies reported decreased echolalia; very few reported increased speech output or communicative attempts. Demographically, most participants were male and White/Caucasian, if sex, race, or ethnic data were reported at all.Conclusions: Overwhelmingly, the literature on interventions focused on echolalia had the explicit aim of reducing echolalic speech, a functional form of communication. Autistic self-advocates have made it clear that they are opposed to interventions that seek to eliminate autistic traits, including echolalia. When implementing evidence-based practice that considers scientific evidence alongside client values, speech-language clinicians should avoid interventions aimed at reducing echolalia.Supplemental Material S1. Complete set of extracted data from included articles.Dinello, A., & Gladfelter, A. (2025). Intervention techniques targeting echolalia: A scoping review. American Journal of Speech-Language Pathology, 34(3), 1528–1543. https://doi.org/10.1044/2025_AJSLP-24-00211
Stokes drift and its discontents
Creators: name: Vanneste, Jacques
name: Young, William R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: The Stokes velocity $\mathbf{u}^\mathrm{S}$, defined approximately by Stokes (1847, Trans. Camb. Philos. Soc., 8, 441-455), and exactly via the Generalized Lagrangian Mean, is divergent even in an incompressible fluid. We show that the Stokes velocity can be naturally decomposed into a solenoidal component, $\mathbf{u}^\mathrm{S}_\mathrm{sol}$, and a remainder that is small for waves with slowly varying amplitudes. We further show that $\mathbf{u}^\mathrm{S}_\mathrm{sol}$ arises as the sole Stokes velocity when the Lagrangian mean flow is suitably redefined to ensure its exact incompressibility. The construction is an application of Soward & Roberts's glm theory (2010, J. Fluid Mech., 661, 45-72) which we specialise to surface gravity waves and implement effectively using a Lie series expansion. We further show that the corresponding Lagrangian-mean momentum equation is formally identical to the Craik-Leibovich equation with $\mathbf{u}^\mathrm{S}_\mathrm{sol}$ replacing $\mathbf{u}^\mathrm{S}$, and we discuss the form of the Stokes pumping associated with both $\mathbf{u}^\mathrm{S}$ and $\mathbf{u}^\mathrm{S}_\mathrm{sol}$.
Sulle fonti delle fluttuazioni dell'economia italiana: una analisi con sistemi VAR strutturali
Creators: name: Onofri, Paolo
name: Paruolo, Paolo
name: Salituro, Bruno
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/01 Economia politica

description: Gli autori, in un precedente lavoro, avevano affrontato l'analisi empirica del ciclo economico in Italia cercando di far emergere dai dati delle regolarità empiriche tramite una metodologia d'indagine che richiedeva, comunque, delle restrizioni arbitrarie ai fini della identificazione. I risultati ottenuti suggerivano un forte rilievo, nella spiegazione della varianza del prodotto, per gli impulsi di natura permanente, assunti come provenienti dall'offerta, e un ruolo relativamente contenuto per gli impulsi di natura estera. Nel presente lavoro hanno invece preso le mosse da una ipotesi a priori: che nel lungo anadare la crescita effettiva delle grandezze economiche sia attratta dalle necessità di rispettare dei rapporti costanti tra le grandezze medesime. Nell'ambito della medesima metodologia di indagine econometrica (VAR strutturali) questa ipotesi di crescita bilanciata implica la presenza di vettori di cointegrazione tra le variabili oggetto di studio. Ciò, a sua volta, sta anche ad indicare che esistono propulsori comuni alla crescita delle diverse variabili. Il principale propulsore o trend stocastico comune è identificato, a priori, nel progresso tecnico. Esso risulta spiegare più dell'80% della varianza del prodotto dopo 4 anni dall'impulso stesso, ma nel breve periodo l'effetto di impulsi transitori risulta più sostenuto di quanto non appaia dal lavoro precedente. Il risultato più interessante riguarda, però, il veicolo delle innovazioni del progresso tecnico. I dati rivelano che il trend stocastico comune è costituito dalla cumulata dei disturbi della domanda mondiale, ma se questa variabile viene omessa è la serie storica dei consumi ad assumere il ruolo di veicolo anzidetto. Tutto ciò è compatibile con una interpretazione della crescita dell'economia italiana secondo la quale la presenza della nostra produzione sui mercati esteri avrebbe determinato un assorbimento di tecnologia che a sua volta avrebbe sollecitato innovazioni nei modelli di consumo.
Nuclear medium effects in lepton-nucleus DIS in the region of $x \gtrsim 1$
Creators: name: Athar, M. Sajjad
name: Singh, S. K.
name: Zaidi, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nuclear medium effects in the nuclear structure functions and differential cross sections in the deep inelastic scattering (DIS) of charged lepton and neutrino from nuclear targets are studied in the region of large $x$ including $x\ge 1$. The nuclear medium effects due to the Fermi motion and the binding energy of nucleons and the nucleon correlations are included using nucleon spectral function calculated in a microscopic field theoretical model. The numerical results for the nuclear structure functions and the cross sections are obtained using the nucleon structure function evaluated at the next-to-next-to-leading order (NNLO) with the Martin-Motylinski-Harland Lang-Thorne (MMHT) parameterization of the nucleonic parton distribution functions (PDFs) and are compared with the available experimental data on electron scattering from the Jefferson Lab (JLab) and SLAC Nuclear Physics Facility (NPAS). In the case of neutrino scattering the results are relevant for understanding the DIS contributions to the recent inclusive cross sections measured by the Main Injector Neutrino ExpeRiment to study v-A interactions (MINERvA) as well as theoretical predictions are made for Deep Underground Neutrino Experiment (DUNE). The importance of isoscalarity corrections in heavier nuclear targets as well as the effect of the kinematic cut on the CM energy $W$ in defining the DIS region have also been discussed.
description: 14 pages, 7 figures and 1 table
Igbo also known as "Ibo"
Creators: name: Pitek, Emily
Publisher: name: Database of Religious History (DRH)
Year: 2020

description: The Igbo (spelled “Ibo” by British colonialists; Amadiume, 2003) live across Nigeria, and are united by shared linguistic and cultural traditions. There is no central political authority among the Igbo; the largest social unit is the village-group, bound together by ties but each village is functionally independent. In fact, there is “no individual of outstanding power or authority either directly in things spiritual or indirectly in things secular (Green, 1964:49).” Although there are not official religious leaders among the Igbo, there are two types of religious practitioners: priests and dibeas. Hereditary priests observe taboos and lead ceremonies, but are otherwise viewed as “ordinary” members of the community (Green, 1964:53). A dibea, on the other hand, undergoes training and initiation rites to become a specialist in the professions of diviner and/or doctor-magician. Various types of supernatural beings are present. There is belief in a supreme high god who is largely viewed as an otiose creator deity overseeing the world from above, and is not typically worshipped directly. Additionally present are the spirits of deceased humans, and ancestor worship appears to be the concern/responsibility of individual households and families. Several nonhuman spirits are also present, including village and village-group deities. Larger-scale rituals/ceremonies/celebrations are present, such as the annual rites surrounding the worship of the village-group deity. It is important to note the presence of Christian influence among the Igbo, beginning with the arrival of missionaries in the mid 1800’s. The religious realm of Igbo life is not distinct, but is bound in the functioning of the society as a whole. Consequently, this entry considers the religious group to be coterminous with the society. This entry focuses specifically on the Eastern Isu-Ana division, Owerri, or Southern Igbo, around the time of 1935.
Bertrand Vs. Cournot: An Evolutionary Approach
Creators: name: Sacco, Pier Luigi
name: Scarpa, Carlo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/01 Economia politica

description: In this paper we study an oligopoly game with a differentiated product using a dynamic evolutionary approach. Firms are allowed to choose between quantity setting and price setting behavior. We find that, under both classical interaction structures, namely 'random mating' and 'paying the field'. Quantity setting behavior (i.e., 'Cournot' behavior), is selected as an asymptotically stable state for the dynamics.
Kinematics of Parsec-Scale Jets of Gamma-Ray Bright Blazars at 43 GHz during Ten Years of the VLBA-BU-BLAZAR Program
Creators: name: Weaver, Zachary R.
name: Jorstad, Svetlana G.
name: Marscher, Alan P.
name: Morozova, Daria A.
name: Troitsky, Ivan S.
name: Agudo, Iván
name: Gómez, José L.
name: Lähteenmäki, Anne
name: Tammi, Joni
name: Tornikoski, Merja
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze the parsec-scale jet kinematics from 2007 June to 2018 December of a sample of $γ$-ray bright blazars monitored roughly monthly with the Very Long Baseline Array at 43 GHz under the VLBA-BU-BLAZAR program. We implement a novel piece-wise linear fitting method to derive the kinematics of 521 distinct emission knots from a total of 3705 total intensity images in 22 quasars, 13 BL Lacertae objects, and 3 radio galaxies. Apparent speeds of these components range from $0.01c$ to $78c$, and 18.6\% of knots (other than the "core") are quasi-stationary. One-fifth of moving knots exhibit non-ballistic motion, with acceleration along the jet within 5 pc of the core (projected) and deceleration farther out. These accelerations occur mainly at locations coincident with quasi-stationary features. We calculate the physical parameters of 273 knots with statistically significant motion, including their Doppler factors, Lorentz factors, and viewing angles. We determine the typical values of these parameters for each jet and the average for each subclass of active galactic nuclei. We investigate the variability of the position angle of each jet over the ten years of monitoring. The fluctuations in position of the quasi-stationary components in radio galaxies tend to be parallel to the jet, while no directional preference is seen in the components of quasars and BL Lacertae objects. We find a connection between $γ$-ray states of blazars and their parsec-scale jet properties, with blazars with brighter 43 GHz cores typically reaching higher $γ$-ray maxima during flares.
description: Accepted in Astrophysical Journal Supplement Series, 54 pages, 32 figures, 16 tables, 3 figure sets, 6 machine-readable tables - Figure sets and machine-readable tables available upon request or upon publication in ApJSS
Self-Reinforcing Mechanisms and Market Information
Creators: name: Agliardi, Elettra
name: Bebbington, Mark S.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/01 Economia politica

description: We consider the possibility of switching between two technological standards when there are network externalities and imprecise market information. Multiple equilibria in terms of market shares can arise. The main result is that lock-in to one of multiple equilibria is not a permanent out- come when the source of lock-in is network externalities. The market lingers at prevalence of one standard with intermittent transitions to prevalence of  the other. In other words, lock-in is a temporary occurrence.
Basis-set correction for coupled-cluster estimation of dipole moments
Creators: name: Traore, Diata
name: Toulouse, Julien
name: Giner, Emmanuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The present work proposes an approach to obtain a basis-set correction based on density-functional theory (DFT) for the computation of molecular properties in wave-function theory (WFT). This approach allows one to accelerate the basis-set convergence of any energy derivative of a non-variational WFT method, generalizing previous works on the DFT-based basis-set correction where either only ground-state energies could be computed with non-variational wave functions [J. Phys. Chem. Lett. 10, 2931 (2019)] or properties where computed as expectation values over variational wave functions [J. Chem. Phys. 155, 044109 (2021)]. This work focuses on the basis-set correction of dipole moments in coupled-cluster with single, double, and perturbative triple excitations (CCSD(T)), which is numerically tested on a set of fourteen molecules with dipole moments covering two orders of magnitude. As the basis-set correction relies only on Hartree-Fock densities, its computational cost is marginal with respect to the one of the CCSD(T) calculations. Statistical analysis of the numerical results shows a clear improvement of the basis convergence of the dipole moment with respect to the usual CCSD(T) calculations.
YOSHLAR IJTIMOIY FAOLLIGI OSHIRISH VA ULARNING IJTIMOIYLASHUV JARAYONINI TAKOMILLASHTIRISH
Creators: name: Shoyo'ldoshova Billura Shoxaydar qizi O'zbekiston Respublikasi Yoshlar ishlari agentligi Parkent tumani Yoshlar ishlari bo'limi Boyqozon mahallasi yoshlar yetakchisi
Publisher: name: Zenodo
Year: 2024

description: Ushbu tezisda yoshlarning ijtimoiy faolligini oshirish va ularning ijtimoiylashuv jarayonini takomillashtirish masalalari yoritiladi. Yoshlarning ijtimoiylashuvi jamiyatdagi asosiy jarayonlardan biri bo‘lib, bu jarayon ularning shaxsiy rivojlanishi, ijtimoiy munosabatlarga kirishishi va fuqarolik burchlarini anglashida muhim rol o‘ynaydi. Shuningdek, zamonaviy ijtimoiy va axborot texnologiyalarining yoshlarning ijtimoiylashuv jarayoniga qanday ta’sir ko‘rsatayotgani tahlil qilinadi.

Kalit so‘zlar: yoshlar, ijtimoiy faollik, ijtimoiylashuv, axborot texnologiyalari, shaxsiy rivojlanish, ijtimoiy munosabatlar
The Organisation of Trading in the Third and Fourth Markets in the USA
Creators: name: Kregel, Jan Allan
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1992
Subjects: SECS-P/01 Economia politica

description: The main role of financial markets is the determination of prices which represent information about traders interpretations of conditions influencing financial assets. Intermediaries in financial markets exist because they provide concentration and efficient dissemination of information. Technological change has a direct effect on both the ability to concentrate and disseminate information. Just as the introduction of the telegraph and then the telephone changed the nature of market  intermediation, the current introduction of computer aided communications technology has brought  about changes in the financial markets. In the US these changes represent non-intermediated markets known as the "third" and "fourth" markets. This papers analyses and describes these markets and their implications for the future evolution of price formation in financial markets.