bluuebunny/crossref_metadata_2025_split huggingface dataset:
SmartLab vernetzt Produktionsmaschinen/The establishment of a digital process chain in an existing production environment
Authors: Schneider Matthias , Meier Veronika , Stehle Thomas , Möhring Christian 
Published: February 2023

Am Institut für Werkzeugmaschinen der Universität Stuttgart wurde die digitale Vernetzung eines heterogenen Maschinenparks mit Bestands- und Neumaschinen verschiedener Hersteller im Versuchsfeld der Holz- und Verbundwerkstoffbearbeitung umgesetzt. Selten lassen sich digitale Prozessketten bei einem KMU auf der „grünen Wiese“ implementieren, da die dafür notwendige Infrastruktur meist nicht vorhanden ist. Aus diesem Grund wurde der „Brownfield-Ansatz“ mit dem Ziel verfolgt, Studierenden und Unternehmen der Branche die Möglichkeit zu geben, „Connectivity“-Technologien an Bestands- und Neuanlagen zu erforschen.

The IfW of the University of Stuttgart has implemented the digital networking of a heterogeneous machine park with existing and new machines from different manufacturers in the test field for wood and composite material processing. With necessary infrastructure not being available, implementing a digital process chain at an SME on a „greenfield“ is rarely possible. Therefore, the “brownfield” approach has been pursued to enable students and industrial companies to research „connectivity“ technologies in existing machines and plants.
Referenzieren von Prozessüberwachungsdaten mit CT-Daten/Using CT data to reference process-monitoring data – Quality assurance in PBF-LB/M
Authors: Harbig Jana , Geis Johannes , Sperling Philip , Musekamp Jens , Merschroth Holger , Oechsner Matthias , Weigold Matthias , Kirchner Eckhard 
Published: February 2023

Die Qualitätssicherung beim pulverbettbasierten Laserstrahlschmelzen (PBF-LB/M) ist kostenintensiv und eine der großen Barrieren für eine breite industrielle Anwendung. Neue Ansätze der digitalen Qualitätssicherung durch Überwachungssysteme sollen dieses Problem lösen. Um diese Systeme für die lokale Fehlererkennung auslegen zu können, wird eine Methode zur Verknüpfung von Prozessüberwachungsdaten mit einer CT-Visualisierung der Probe vorgestellt.

Quality assurance in powder bed fusion with a laserbeam (PBF-LB/M) is cost-intensive and remains one of the major barriers to widespread industrial application. New approaches of digital quality assurance through monitoring systems are expected to solve this problem. To design these systems for use in local defect detection, a method for linking process-monitoring data to the CT visualization of the sample is presented.
Arten der Ressourcenverschwendung in der Produktion/Types of resource waste in the production area
Authors: Weyand Astrid , Seyfried Stefan , Schraml Philipp , Beck Martin , Weigold Matthias 
Published: February 2023

Angesichts der sich weiter zuspitzenden Klimakrise gilt es unnötige Verbräuche von Ressourcen in der Produktion zu vermeiden. Basierend auf den Lean-Verschwendungsarten werden in diesem Beitrag sogenannte Ressourcenverschwendungsarten erarbeitet, die typische Stellen der Verschwendung von Ressourcen in produzierenden Unternehmen klassifizieren. Diese können als Grundlage dienen, um geeignete Maßnahmen zur Eliminierung von Ressourcenverschwendung umzusetzen.

With a view to recent developments in the climate crisis, it is important to avoid unnecessary resource consumption in production. Based on lean waste types, this article identifies so-called resource waste types that summarize typical points of resource waste in manufacturing companies. These types may serve as a basis for implementing suitable measures to eliminate resource waste.
A Statistical Analysis of Magnetic Field Changes in the Photosphere during Solar Flares Using High-cadence Vector Magnetograms and Their Association with Flare Ribbons
Authors: Yadav Rahul , Kazachenko M. D. 
Published: February 2023

Abstract
We analyze high-cadence vector magnetograms (135 s) and flare-ribbon observations of 37 flares from the Solar Dynamics Observatory to understand the spatial and temporal properties of changes in the photospheric vector magnetic field and their relationship to footpoints of reconnected fields. Confirming previous studies, we find that the largest permanent changes in the horizontal field component lie near the polarity inversion line, whereas changes in the vertical field are less pronounced and are distributed throughout the active region. We find that pixels swept up by ribbons do not always exhibit permanent changes in the field. However, when they do, ribbon emission typically occurs several minutes before the start time of field changes. The changes in the properties of the field show no relation to the size of active regions, but are strongly related to the flare-ribbon properties such as ribbon magnetic flux and ribbon area. For the first time, we find that the duration of permanent changes in the field is strongly coupled with the duration of the flare, lasting on average 29% of the duration of the GOES flare. Our results suggest that changes in photospheric magnetic fields are caused by a combination of two scenarios: contraction of flare loops driven by magnetic reconnection and coronal implosion.
Multiple Shock Fronts in RBS 797: The Chandra Window on Shock Heating in Galaxy Clusters
Authors: Ubertosi F. , Gitti M. , Brighenti F. , McDonald M. , Nulsen P. , Donahue M. , Brunetti G. , Randall S. , Gaspari M. , Ettori S. , Calzadilla M. , Ignesti A. , Feretti L. , Blanton E. L. 
Published: February 2023

Abstract
Using ∼427 ks of Chandra observations, we present a study of shock heating and intracluster medium (ICM) cooling in the galaxy cluster RBS 797. We discover three nested pairs of weak shocks at roughly 50, 80, and 130 kpc from the center. The total energy associated with the shocks is ∼6 × 1061 erg, with the central active galactic nucleus (AGN) driving a pair of weak shocks every 20–30 Myr with a power P
sh ≈ 1046 erg s−1. Based on its morphology and age (∼30 Myr), the inner cocoon shock is associated with the four equidistant X-ray cavities previously discovered. From the thermodynamic analysis of the inner 30 kpc, we find evidence for ICM condensation into colder gas between and behind the X-ray cavities. The total AGN mechanical power (cavities and shocks) of 3.4 × 1046 erg s−1 can balance the ICM radiative losses, estimated as L
cool = 2.3 × 1045 erg s−1. By building plots of P
cav versus L
cool, P
shock versus L
cool, and P
tot versus L
cool for RBS 797 and 14 other galaxy clusters, galaxy groups, and elliptical galaxies where both cavities and shocks are detected, we verify that the most powerful outbursts are found in the strongest cooling systems. Ultimately, we observe that the mechanical power of the AGN exceeds the gas radiative losses by a factor that is different for FR I and FR II radio galaxies, being less than a few tens for FR Is (as RBS 797) and more than roughly 100 for FR IIs.
A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow?
Authors: Rusakov Vadim , Steinhardt Charles L. , Schramm Malte , Faisst Andreas L. , Masters Daniel , Mobasher Bahram , Pattarakijwanich Petchara 
Published: February 2023

Abstract
The quasar SDSS 0956 + 5128 exhibits three distinct velocity components with large offsets in emission: the systemic velocity of [O ii], [O iii], and [Ne iii] narrow lines have redshift z = 0.7142; the broad Mg ii line is shifted by −1200 km s−1 with respect to the narrow lines; the broad Hα and Hβ lines are at −4100 km s−1. We present new Hubble Space Telescope spectra of Lyα and C iv emission lines and high-resolution images of the quasar. The offsets of these lines are consistent with the velocity component of the Balmer emission, and the photometry in optical and near-infrared wavelengths does not show any signs of recent mergers in the host galaxy or irregularities in the location of the quasar. The data do not confirm predictions of the previous most likely hypotheses involving a special orientation and morphology of the quasar disk, such as in the recoiling black hole scenario, neither it is consistent with accretion disk winds. Instead, based on the cumulative evidence, we propose a new scenario, in which the broad-line region is in the state of outflow caused by a strong shock wave, with a supernova as a possible event for producing the shock ejecta.
Temporal and Latitudinal Variations in Ca-K Plage and Network Area: An Implication for Meridional Flows
Authors: Priyal Muthu , Singh Jagdev , Ravindra Belur , Sindhuja G. 
Published: February 2023

Abstract
The Ca-K spectroheliograms obtained at the Kodaikanal observatory are used to generate a uniform time series using the equal-contrast technique for studying the long- and short-term variations in the solar chromosphere. The percentages of plage, enhanced network, and active and quiet network areas at various latitudes is compared with the activity at 35° latitude and also with the sunspot number for the period of 1907–1984. The values of the phase differences indicate that the activity begins at ∼45° latitude and shifts progressively to a lower latitude at a speed of ∼9.4 m s−1 . The shift speed slows down gradually and reaches ∼3 m s−1 at ∼5° latitude. No phase difference between the variations of Ca-K activity at 55°, 65°, and 75° latitude belts implies that changes in the activity are happening simultaneously. The analysis shows that the activity at polar latitude belts is anticorrelated with the sunspot number. This study indicates that a multicell meridional flow pattern could exist in the latitude direction. One type of cell could transport the magnetic elements from mid- to low-latitude belts through meridional flows, and the other cell type could be operating in the polar region.
Studying Postmerger Outflows from Magnetized-neutrino-cooled Accretion Disks
Authors: Nouri Fatemeh Hossein , Janiuk Agnieszka , Przerwa Małgorzata 
Published: February 2023

Abstract
Neutrino-cooled accretion flow around a spinning black hole, produced by a compact binary merger, is a promising scenario for jet formation and launching magnetically driven outflows. Based on GW170817 gravitational wave detection by LIGO and Virgo observatories, followed by electromagnetic counterparts, this model can explain the central engine of the short-duration gamma-ray bursts and kilonova radiations. Using the open-source general relativistic magnetohydrodynamic HARM-COOL code, we evolved several 2D magnetized accretion disk–black hole models with a realistic equation of state in the fixed curved spacetime background. We applied the particle tracer technique to measure the properties of the outflows. The disk and black hole's initial parameters are chosen in a way to represent different possible postmerger scenarios of the merging compact objects. Our simulations show a strong correlation between the black hole's spin and ejected mass. Generally, mergers producing massive disks and rapidly spinning black holes launch stronger outflows. We observed our models generate winds with moderate velocity (v/c ∼ 0.1–0.2) and a broad range of electron fractions. We use these results to estimate the luminosity and light curves of possible radioactively powered transients emitted by such systems. We found that the luminosity peaks within the range of 1040–1042 erg s−1, which agrees with previous studies for disk wind outflows.
Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?
Authors: Telloni Daniele , Zank Gary P. , Adhikari Laxman , Zhao Lingling , Susino Roberto , Antonucci Ester , Fineschi Silvano , Stangalini Marco , Grimani Catia , Sorriso-Valvo Luca , Verscharen Daniel , Marino Raffaele , Giordano Silvio , D’Amicis Raffaella , Perrone Denise , Carbone Francesco , Liberatore Alessandro , Bruno Roberto , Zimbardo Gaetano , Romoli Marco , Andretta Vincenzo , Da Deppo Vania , Heinzel Petr , Moses John D. , Naletto Giampiero , Nicolini Gianalfredo , Spadaro Daniele , Teriaca Luca , Burtovoi Aleksandr , De Leo Yara , Jerse Giovanna , Landini Federico , Pancrazzi Maurizio , Sasso Clementina , Slemer Alessandra 
Published: February 2023

Abstract
Evidence for the presence of ion cyclotron waves (ICWs), driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurements of the solar wind can be linked with the large-scale structures of the solar corona. The results suggest that the dynamics of the current sheet layers generates turbulence, which in turn creates a sufficiently strong temperature anisotropy to make the solar-wind plasma unstable to anisotropy-driven instabilities such as the Alfvén ion cyclotron, mirror-mode, and firehose instabilities. The study of the polarization state of high-frequency magnetic fluctuations reveals that ICWs are indeed present along the current sheet, thus linking the magnetic topology of the remotely imaged coronal source regions with the wave bursts observed in situ. The present results may allow improvement of state-of-the-art models based on the ion cyclotron mechanism, providing new insights into the processes involved in coronal heating.
Near-infrared Polarization Charateristics of the Zodiacal Light Observed with DIRBE/COBE
Authors: Takimoto Kohji , Matsuura Shuji , Sano Kei , Feder Richard M. 
Published: February 2023

Abstract
We report near-infrared polarization of the zodiacal light (ZL) measured from space by the Diffuse Infrared Background Experiment (DIRBE) on board the Cosmic Background Explorer in photometric bands centered at 1.25, 2.2, and 3.5 μm. To constrain the physical properties of interplanetary dust, we use DIRBE Weekly Sky Maps to investigate the solar elongation (ϵ), ecliptic latitude (β), and wavelength (λ) dependence of ZL polarization. We find that the polarization of the ZL varies as a function of ϵ and β, consistent with observed polarization at λ = 550 nm. While the polarization dependence on wavelength at (ϵ, β) = (90°, 0°) is modest (increasing from 17.7% ± 0.2% at 1.25% μm to 21.0% ± 0.3% at 3.5 μm), the variation is more pronounced at the north ecliptic pole (23.1% ± 1.6%, 35.1% ± 2.0%, and 39.3% ± 2.1% at 1.25, 2.2, and 3.5 μm, respectively). The variation in ZL polarization with wavelength is not explained by either Rayleigh scattering or absorptive particles larger than 10 μm.
Clostridium difficile toxins impact on rat colon smooth muscle reactivity
Authors: Vassilev Petar , Zaytseva Ekaterina , Ardasheva Raina , Turiyski Valentin 
Published: February 2023

Aim: The present study was conducted in an attempt to find possible direct mechanisms of action of Clostridium difficile toxins A and B (TCdA and TCdB) on contractility of isolated rat intestinal smooth muscles, as the contractive pathways affected by the toxins and responsible for motility disorders remain unclear.&nbsp;
Materials and methods: Adult male Wistar rats were used in our experiments. Longitudinal smooth muscle (SM) preparations of proximal colon were isolated and their contractile activity was isometrically registered. The samples were mounted in tissue baths and exogenously treated with acetylcholine (ACh), serotonin (5-HT), dopamine, norepinephrine, TCdA and TCdB. The potential of TCdA and TCdB to affect the action of these mediators on SM activity was examined.&nbsp;
Results: The experiments have shown that exciting action of ACh and 5-HT on colonic contractility is enhanced by TCdA rather than TCdB. Conversely, relaxing effect of dopamine and norepinephrine on contractile activity of colonic SM is under impact of TCdB but not TcdA. TCdA has a stronger direct effect on in vitro SM sensitivity to ACh and 5-HT than TCdB.
Conclusions: TCdA and TCdB affect directly the contractile reactivity of isolated rat colon smooth muscle. TCdA has a stronger direct effect on smooth muscle sensitivity to acetylcholine and 5-HT than TCdB. Such a trend has not been established for dopamine and norepinephrine.
Can we predict death using scoring systems in patients with local peritonitis ? A retrospective study
Authors: Dimitrov Evgeni N. , Minkov Georgi A. , Enchev Emil T. , Halacheva Krasimira S. , Yovtchev Yovcho P. 
Published: February 2023

Introduction: Prognostic scores in patients with local peritonitis (LP) have not yet been studied exhaustively.
Aim: We, therefore, aimed in this study to evaluate the ability of several scoring systems to predict death in LP.
Materials and methods: A retrospective analysis including 68 patients with LP was conducted at Prof. Dr. Stoyan Kirkovich University Hospital in Stara Zagora from January 2017 to August 2021. Clinical and laboratory data needed for calculating the scoring systems were collected at admission or postoperatively. We compared the prognostic performance of WSES SSS, MPI, SIRS, and qSOFA using area under the receiver operation characteristics (AUROC) curves and bivariate correlation analysis.
Results: The observed mortality rate was 8.8%. Among all scores, MPI showed the best prognostic performance (AUROC=0.805, 95%&nbsp;CI 0.660&ndash;0.950). A threshold MPI >25 points permitted prediction of adverse outcome with a sensitivity of 66.7% and a specificity of 80.6%. The only significant correlation was found between outcome and MPI (p=0.012, r=0.302).&nbsp;
Conclusions: The MPI has the ability to prognosticate mortality in patients with LP unlike WSES SSS, qSOFA and SIRS.
Free-gliding screw fixation in slipped capital femoral epiphysis: potentially growing im-plants for symptomatic and prophylactic pinning
Authors: Tserovski Stefan , Alexiev Venelin , Kehayov Raytcho 
Published: February 2023

Introduction: In situ fixation is the gold standard for mild and moderate slipped capital femoral epiphysis (SCFE) cases. The condition is associated with a low percentage of avascular necrosis and chondrolysis.[1] The present study examines the postoperative femoral neck remodelling and implant elongation in cases of therapeutic and prophylactic in situ fixation using the free-gliding screw system.&nbsp;
Aim: The aim of our study was to assess the postoperative femoral neck growth and evaluate the biomechanical evolution and complication&rsquo;s rate for 19 therapeutic and 11 prophylactic in situ fixations with a free-gliding screw.&nbsp;
Materials and methods: We measured the preoperative and postoperative articulo-trochanteric distance (ATD), alpha angle (&alpha; angle) and screw elongation in symptomatic hips and in contralateral hips with prophylactic fixation. We compared the radiographic param-eters of 30 hips.&nbsp;
Results: ATD remains approximately the same for symptomatic cases, whereas it increases for prophylactic fixated hip. Screw elongates in both group with statistically higher value for the prophylactic group. The alpha angle remains pathological in these cases with a mean value of 67.12&plusmn;4.62&deg;, but decreases for group II. Screw elongates by a mean value of 3.14&plusmn;2.74&nbsp;mm for group I and 6.78&plusmn;8.81&nbsp;mm for group II.
Conclusions: Prophylactic in situ fixation with free-gliding screws does not affect the proximal femoral growth (ATD), and does not decrease the alpha angle significantly. Screw elongates statistically in both groups, but more significantly for group II. For symptomatic hips, the in situ fixation allows the femoral neck to grow with ATD preserved, but significantly less than in group II. The alpha angle decreases but remains pathological.
Apprendre à habiter la Terre avec des histoires de vie environnementales écoformatrices
Authors: Pineau Gaston 
Published: February 2023

La crise écologique met à l’ordre du jour la recherche de nouvelles voies pour apprendre à habiter la Terre à long terme, de façon viable et durable. Cette communication développe l’émergence d’histoires de vie environnementales et l’intérêt de la relier à celle d’histoires de vie personnelles et socio-professionnelles pour construire une voie auto-socio-écoformatrice à trois vitesses. Elle le fait en trois temps : le premier ouvre l’éventail terminologique de l’émergence de cette voie buissonnière très biodiversifiée ; le deuxième décrit la manière dont cette méthodologie s’est progressivement imposée pour explorer la complexité des pratiques d’écoformation avec la matrice cosmique des quatre éléments ; enfin est présenté le condensé d’un texte autobiographique sur l’histoire de vie à trois vitesses de l’auteur.
« Les discussions Atmosphère, Atmosphère » auprès de personnes âgées : l’approche de la narrativité relationnelle
Authors: Treton Cécile 
Published: February 2023

Comment générer le désir de renouer des liens avec l’autre auprès de personnes très âgées vivant dans une Résidence Autonomie et traversant une période de solitude intense ? L’article relate une expérimentation menée dans la Résidence Autonomie de Cachan à partir d’un dispositif narratif conçu sur la base d’une démarche de narrativité relationnelle. La narrativité relationnelle considère le lien social à partir de l’émotion partagée entre deux interlocuteurs. L’expérimentation nommée « les discussions Atmosphère, Atmosphère » s’appuie sur une médiation à travers un espace-temps et des récits hybrides qui génèrent une ambiance singulière. Un processus de transformation des échanges apparaît au cours duquel la conscience de l’alter ego progresse.
La pluralité des modèles de revenus dans le secteur des applications mobiles de sport et d’activité physique
Authors: Soulé Bastien 
Published: February 2023

Les applications mobiles de sport et d’activité physique (AMSAP) sont de plus en plus diffusées. Cet article décrit les modèles de revenus en vigueur au sein de ce secteur. L’enquête qualitative met en lumière la pluralité des modèles de revenus explorés par les entreprises éditrices d’AMSAP. Tout en détaillant les exploitations commerciales faites des données recueillies, elle souligne la permanence de formes classiques de monétisation et d’usages internes des data . Des formes d’utilisation originales des données émergent, à commencer par les mises en commun entre concurrents, facilitées par l’interopérabilité de leurs dispositifs. La fréquence des revirements en matière d’utilisation des données témoigne de tâtonnements stratégiques typiques des phases d’exploration des innovations. Enfin, les agencements marchands à l’œuvre reposent sur une particularité repérée de longue date dans les services numériques, mais prenant une teneur particulière du fait de la porosité du secteur des AMSAP avec celui de la e-santé : l’attachement des utilisateurs est obtenu sur la base d’un important flou concernant le prix réellement consenti pour utiliser les services offerts.
Dans la haine, une perversion psychique
Authors: Richard François , Richard François 
Published: February 2023

Cet article fait l’hypothèse d’une haine radicale distincte de la haine psychologique pour une personne. Ce haïr modifie la source et le circuit de la pulsion. Sous les apparences d’une destructivité opératoire, on trouve intention d’atteindre la subjectivité de l’autre en même temps niée dans son humanité. La pulsion de mort à l’œuvre n’est ici pas exempte de sadisme, mais c’est surtout de paranoïa et d’une perversion psychique particulière dont il s’agit. Deux exemples essentiels l’illustrent : le viol et les génocides. Dans le viol, on trouve une identification refusée du violeur meurtrier à la victime. Dans les génocides, l’abolition de l’altérité de l’autre a besoin de cette altérité pour ensuite la massacrer. Sont étudiés en détail les procédés de la subtile falsification du langage produite par les idéologies génocidaires et totalitaires qui ressurgissent dans le contexte de l’actuel malaise dans la culture.