bluuebunny/crossref_metadata_2025_split huggingface dataset:
An improved asteroseismic age of the rapid rotator Altair from TESS data
Authors: Rieutord Michel , Reese Daniel R. , Mombarg Joey S. G. , Charpinet Stéphane 
Published: May 2024

Context. Understanding the effects of rotation in stellar evolution is key to modelling early-type stars, half of which have equatorial velocities over 100 km s−1. The nearby star Altair is an example of such fast-rotating stars, and furthermore, it has the privilege of being modelled by a detailed 2D concordance model that reproduces most of its observables.
Aims. The aim of this paper is to include new asteroseismic frequencies to improve our knowledge of Altair, especially its age.
Methods. We processed images of Altair obtained during July 2022 by the Transiting Exoplanet Survey Satellite using the halo photometry technique to obtain its light curve over this observation period.
Results. By analysing the light curve, we derived a set of 22 new frequencies in the oscillation spectrum of Altair and confirmed 12 previously known frequencies. Compared with model predictions, we could associate ten frequencies with ten axisymmetric modes. This identification is based on the modelled visibility of the modes. Moreover, nine of the modelled frequencies can be adjusted to simultaneously match their corresponding observed frequencies, once the core hydrogen mass fraction of the concordance model is set to Xcore/Xini ≃ 0.972, with Xini = 0.739. Using the combined results of a 1D MESA model computing the pre-main sequence and a 2D time-dependent ESTER model computing the main sequence, we find that this core hydrogen abundance sets the age of Altair to 88 ± 10 Myr, which is slightly younger than previous estimates.
Helio1D modeling of temporal variation of solar wind: Interfacing between MULTI-VP and 1D MHD for future operational forecasting at L1
Authors: Kieokaew R. , Pinto R.F. , Samara E. , Tao C. , Indurain M. , Lavraud B. , Brunet A. , Génot V. , Rouillard A. , André N. , Bourdarie S. , Katsavrias C. , Darrouzet F. , Grison B. , Daglis I. 
Published: May 2024

Developing an automated pipeline for solar-wind condition prediction upstream of Earth is an important step for transitioning from space weather research to operation. We develop a prototype pipeline called “Helio1D” to model ambient solar wind conditions comprising temporal profiles of wind speed, density, temperature, and tangential magnetic field at L1 up to 4 days in advance. The prototype pipeline connects the MULTI-VP coronal model that provides daily predictions of the solar wind at 0.14 AU and a 1D magnetohydrodynamics (MHD) model that propagates the solar wind to 1 AU. As a part of development towards a better-performing operational pipeline in the future, our present work focuses on the proof-of-concept, initial implementation, and validation of Helio1D. Here, we first benchmark Helio1D using the synoptic magnetograms provided by Wilcox Space Observatory as inputs to the coronal part of MULTI-VP for the intervals in 2004–2013 and 2017–2018. Using the classic point-to-point metrics, it is found that Helio1D underperforms the 27-day recurrence model for all time intervals while outperforming the 4-day persistence model in the late declining phase of the solar cycle. As a complementary analysis, we evaluate the time and magnitude differences between Helio1D and the observations by exploiting the Fast Dynamic Time Warping technique, which allows us to discuss Helio1D caveats and address calibration to improve the Helio1D performance. Furthermore, we model several solar wind conditions in parallel, for a total of 21 profiles corresponding to various virtual targets to provide uncertainties. Although our prototype pipeline shows less satisfactory results compared to existing works, it is fully automated and computationally fast, both of which are desirable qualities for operational forecasting. Our strategies for future improvements towards better-performing pipeline are addressed.
Neurostimulation chronischer Schmerzsyndrome
Authors: Vesper Jan , Krause Molle Zarela , Slotty Philipp Joerg 
Published: May 2024

ZusammenfassungCirca 20 Prozent aller Patienten in Deutschland, die eine schmerztherapeutische
Spezialeinrichtung aufsuchen, leiden unter ungenügend therapierten
neuropathischen Schmemrzen. Mittlerweile liegen aussagekräftigen Studien vor,
die für die angewendeten Neuromodulationsverfahren einen hohen Evidenzgrad
erreichen. Die Epidurale Rückenmarkstimulation (Spinal Cord Stimulation, SCS)
ist ein solches neuromodulatorisches, reversibles interventionelles Verfahren
für Patienten mit chronischen, mit konservativen und weniger invasiven Mitteln
nicht ausreichend therapierbaren Schmerzen. Die Selektion eines Patienten für
eine SCS Therapie ist hauptsächlich durch die entsprechende Diagnose begründet.
Die SCS kann bei verschiedenen Formen neuropathischer, sympathisch vermittelter
oder ischämischer Schmerzen hilfreich sein. Die pathophysiologischen Grundlagen,
inklusive der spinalen und supraspinalen Mechanismen der Neurostimulation werden
dargestellt. Die verschiedenen Prinzipien der Stimulation, herkömmliche
tonische, wie auch neue Stimulationsparameter der Burst und HF Stimulation als
auch die Stimulation des Spinalganglions werden erwähnt. Indikationsstellung und
auch Patientenselektion sowie neue Aspekte der Stimulationstechniken des
peripheren Nervensystems werden in den Kontext der veränderten technischen
Möglichkeiten gestellt.
Es ist ein weites Feld
Authors: Grimm Alexander , Marquetand Justus 
Published: May 2024

Liebe Leserinnen und Leser,was zählt heutzutage zur klinischen Neurophysiologie und was nicht?Diese Frage – und manchmal damit möglicherweise subtil verwobene Kritik an
Programmpunkten auf Fortbildungen, Konferenzen und vielem mehr – hören wir immer
wieder. Während vielleicht vor Jahrzehnten eine Mehrzahl der Mitglieder unserer
Gesellschaft die Frage zunächst mit der Verbindung aus Elektrophysiologie und
klinischer Untersuchung assoziiert hätten, scheint das heutzutage nicht mehr der
Fall zu sein. Schließlich wurde im Verlauf der Zeit aus der „Deutschen
EEG-Gesellschaft“ die „Deutsche Gesellschaft für Klinische
Neurophysiologie und Funktionelle Bildgebung“, was verdeutlicht, dass neue
Modalitäten und Methoden stetig hinzukommen können. Ist die klinische
Neurophysiologie eng zu definieren? Um es mit den Worten von Theodor Fontane zu
sagen: „Nein, gewiss nicht; jedenfalls wollen wir darüber nicht streiten; es ist
ein weites Feld. Und dann sind auch die Menschen so verschieden“ (aus Effi
Briest).
Wie sich die Kodierung der Mangelernährung auf den Krankenhauserlös
auswirkt
Authors: Vonzun Nick , Minery Kevin , Tribolet Pascal 
Published: May 2024

Zusammenfassung
Einleitung Die Prävalenz der nicht näher bezeichneten Energie- und
Eiweissmangelernährung (E46) ist in der Schweiz seit einigen Jahren stabil hoch,
obwohl E46 keinen Einfluss mehr auf die Fallpauschale hat. Wenn E46 dokumentiert
wird, erfolgt eine Behandlung der Mangelernährung, die jedoch nicht zusätzlich
vergütet werden kann.
Methode In dieser retrospektiven ökonomischen Evaluation wurde eine
hypothetische Umkodierung von E46-Fällen (N=14'889) aus der medizinischen
Statistik der Krankenhäuser 2020 durchgeführt. Die E46-Diagnosen wurden anhand
von vier Szenarien, einschliesslich einer Umkodierung mittels multipler
Imputation, in spezifizierte Mangelernährungsdiagnosen umgewandelt. Für jedes
Szenario und mehreren Subgruppen wurden die Veränderungen des Gesamterlöses und
des durchschnittlichen Erlöses berechnet.
Ergebnisse Durch die Umkodierung stieg der Gesamterlös um CHF 10.9 Mio.
(E43), CHF 6.0 Mio. (E44.0), CHF 0 (E44.1) und CHF 6.1 Mio. (Mix). Der
durchschnittliche Erlös pro Fall stieg um CHF 732 (E43), CHF 404 (E44.0), CHF 0
(E44.1) und CHF 407 (Mix) an. In den meisten Subgruppen wurde eine Zunahme des
durchschnittlichen Erlöses festgestellt.
Diskussion Durch eine korrekte Durchführung und Abbildung der Kriterien für
die Kodierung der Energie- und Eiweissmangelernährung gemäss CH Kodierrichtlinie
Die Spezifizierung der Mangelernährung anstelle von E46 im Jahr 2020 hätte zu
einer relevanten Zunahme der Spitalerlöse führen können. Um eine zukünftige
Reduktion der E46-Codierung zu erreichen, ist eine systematische Implementierung
und Durchführung des Nutritional Risk Screenings 2002 erforderlich.
Sieben Schlüsselstrategien für Europa zur Vorbereitung auf eine
Opioidkrise
Authors: Stöver Heino , Steimle Larissa , Moazen Babak 
Published: May 2024

Zusammenfassung
Ziel In den vergangenen zwei Jahrzehnten haben der Konsum synthetischer
Opioide (SO) und die damit verbundenen negativen Folgen weltweit drastisch
zugenommen. Die hochpotenten SO schaffen einen komplexen und unberechenbaren
Markt, der neue Herausforderungen mit sich bringt.
Methodik Das europäische Forschungsprojekt „Stärkung der
Reaktionsbereitschaft von Gesundheitssystemen auf den potenziellen Anstieg der
Prävalenz und des Konsums von synthetischen Opioiden“ hat Leitlinien entwickelt,
mit denen das Gesundheitssystem auf die Herausforderungen durch SO reagieren
kann.
Ergebnisse Diese Leitlinien konzentrieren sich auf Interventionen für
Menschen, die SO konsumieren. Sie beinhalten sieben Schlüsselstrategien:
Frühwarnsysteme, Internet-Monitoring, E-Health, Drug-Checking,
Drogenkonsumräume, Naloxon sowie Opioid-Agonisten-Therapie (OAT). Während einige
Strategien längst etabliert sind (z. B. Drogenkonsumräume), herrscht in anderen
Bereichen (z. B. Drug-Checking) noch deutlicher Nachholbedarf.
Schlussfolgerung Herkömmliche Maßnahmen sowie einzelne Ansätze reichen
nicht aus, um einer möglichen Opioidkrise in Europa adäquat zu begegnen. Es ist
im Interesse der SO-Konsumierenden und des Gesundheitssystems, innovative
Maßnahmen mit etablierten Mitteln zu kombinieren. Der Schlüssel zum Erfolg liegt
in der Integration verschiedener Ansätze.
Improved Synthesis and Preparation of Analogues of a Pain-Relieving Pyridin-2(1H)-one
Authors: Artola Alain , Dallel Radhouane , Anizon Fabrice , Moreau Pascale , Frazier Théo , Murail Pauline , Giraud Francis 
Published: May 2024

AbstractAn optimization of the synthesis of 3,5-disubstituted pyridin-2(1H)-ones with in vivo anti-allodynic activity was conducted. The optimized synthesis was employed to prepare novel analogues which were then assessed for their efficacy in preventing cutaneous mechanical allodynia in a male rat hindpaw capsaicin model.
Wealth and familiarity bias: sin stocks investment in Europe
Authors: Hamdan Mohammed , Calavia Pedro Fernandez , Aminu Nasir 
Published: May 2024

AbstractOur study investigates the relationship between European society’s wealth and how they invest in sin stocks—stocks of listed firms involved in producing tobacco, alcohol, and gambling goods and services returns. Using time series data from 24 European countries from 2000 to 2020 to check the performance of sin stocks, we tested 3 hypotheses to explore the possibility that sin stock returns are related to the wealth of the countries they are based on and to the levels of consumption of alcohol and gambling in those countries. Three quantitative methods are used to measure risk-adjusted returns of the sin stocks: the CAPM single-factor or market model, the Fama-French 3-factor model, and the Fama-French 5-factor model. We found significant evidence of the existence of abnormal returns. The evidence supports that sin stocks have a significant relation with the market, lower volatility, and have better risk-adjusted returns during times of economic downturn. Our results show that sin stocks from the wealthier Northern European countries yield higher risk-adjusted returns than their Southern and Easter European counterparts. We found familiarity bias in gambling sin stocks, which suggests that getting used to something seen as sinful can lead to a lower feeling of rejection. As it is common in behavioural finance, behind the data and numbers of the financial markets, ordinary human behaviour is an essential explanation that defies the orthodox concepts of mathematical efficiency.
The contemporary malaise of interpassivity: On feeling, subjectivation, and automation
Authors: Ramaglia Ferdinando , Sommantico Massimiliano 
Published: May 2024

AbstractFrom a psychoanalytic perspective, this article presents and discusses the concept of interpassivity as a possible unconscious dynamic constitutive of the new forms of contemporary malaise and how it is implicated in the dynamics of subjectivation and enjoyment. Drawing on Mario Perniola’s insights into the changing nature of feeling and its radical numbing, the article seeks to connect the threads of this form of malaise by investigating the influence of interpassivity in our relationship with objects and shedding light on the complex interplay between subjectivity and the objects that surround us. Furthermore, the authors propose a reading of interpassive practices that, from within the horizon of contemporary malaise, implies the disappearance of unconscious subjectivity and appears to induce specific processes of desubjectivation.
Neobanks in emerging markets: a risk assessment
Authors: Au Anson 
Published: May 2024

AbstractNeobanks have risen as popular digital challengers to incumbent banks, especially in emerging markets (EMs) where the banking sector is often characterized by oligopolies. This article first estimates the value of Nubank and StoneCo in Brazil, two of the fastest-growing neobanks in Brazil. Normalizing revenue growth assumptions from their financial data, valuation models uncover that Nubank could be overvalued by about two times, whereas StoneCo could be undervalued by 80% of its fair value, as of March 19, 2024. This article then discusses firm-specific (high cumulative net operating losses, low long-term operating margins, high borrowing costs) and adherent macroeconomic (political uncertainty, foreign exchange risks, high equity risk premia) risks in EMs that explain the volatility in Nubank’s and StoneCo’s stock prices. These risks are instructive for understanding the challenges facing the business model of neobanks in EMs.
Investigation of MBE grown high Al concentration AlGaN ohmic contact
Authors: Wang Yaqin , Shafa Muhammad , Wu Peng , Liao Yitao 
Published: May 2024

Achieving low resistance ohmic connections is one of the significant factors in improving the performance of optoelectric and semiconductor devices. In this work, we examined the decrease in specific contact resistance (ρc) after high-temperature annealing and vanadium thickness variation on an n-type AlGaN epitaxial layer with a high aluminum concentration (75%). To measure it, we prepared rectangular transmission line model electrodes and measured the specific contact resistance at annealing temperatures ranging between 800 and 950 °C. The results showed that the minimum specific contact resistance achieved was 4.12 × 10−2 Ω cm2 at an annealing temperature of 850 °C, which was two times lower compared to that of surface contact mode. It is also demonstrated how the contact resistance of the epitaxial n-type AlGaN layer varies as the vanadium thickness changes from 2 to 15 nm.
Tuning of thermoelectric performance by modulating vibrational properties in Ni-doped Sb2Te3
Authors: Mukherjee Suchandra , Rana Nabakumar , Goswami Swapnadeep , Das Subarna , Singha Pintu , Chatterjee Souvik , Bandyopadhyay Sudipta , Banerjee Aritra 
Published: May 2024

Abstract
Sb2Te3, a binary chalcogenide-based 3D topological insulator, attracts significant attention for its exceptional thermoelectric performance. We report the vibrational properties of magnetically doped Sb2Te3 thermoelectric material. Ni doping induces defect/disorder in the system and plays a positive role in engineering the thermoelectric properties through tuning the vibrational phonon modes. Synchrotron powder x-ray diffraction study confirms good crystalline quality and single-phase nature of the synthesized samples. The change in structural parameters, including B

iso
and strain, further corroborate with structural disorder. Detailed modification of phonon modes with doping and temperature variation is analysed from temperature-dependent Raman spectroscopic measurement. Compressive lattice strain is observed from the blue shift of Raman peaks owing to Ni incorporation in Sb site. An attempt is made to extract the lattice thermal conductivity from total thermal conductivity estimated through optothermal Raman studies. Hall concentration data support the change in temperature-dependent resistivity and thermopower. Remarkable increase in thermopower is observed after Ni doping. Simulation of the Pisarenko model, indicating the convergence of the valence band, explains the observed enhancement of thermopower in Sb2−x
Ni
x
Te3. The energy gap between the light and heavy valence band at Γ point is found to be 30 meV (for Sb2Te3), which is reduced to 3 meV (in Sb1.98Ni0.02Te3). A significant increase in thermoelectric power factor is obtained from 715 μWm−1K−2 for pristine Sb2Te3 to 2415 μWm−1K−2 for Ni-doped Sb2Te3 sample. Finally, the thermoelectric figure of merit, ZT is found to increase by four times in Sb1.98Ni0.02Te3 than that of its pristine counterpart.
Review of research on signal decomposition and fault diagnosis of rolling bearing based on vibration signal
Authors: Li Junning , Luo Wenguang , Bai Mengsha 
Published: May 2024

Abstract
Rolling bearings are critical components that are prone to faults in the operation of rotating equipment. Therefore, it is of utmost importance to accurately diagnose the state of rolling bearings. This review comprehensively discusses classical algorithms for fault diagnosis of rolling bearings based on vibration signal, focusing on three key aspects: data preprocessing, fault feature extraction, and fault feature identification. The main principles, key features, application difficulties, and suitable occasions for various algorithms are thoroughly examined. Additionally, different fault diagnosis methods are reviewed and compared using the Case Western Reserve University bearing dataset. Based on the current research status in bearing fault diagnosis, future development directions are also anticipated. It is expected that this review will serve as a valuable reference for researchers aiming to enhance their understanding and improve the technology of rolling bearing fault diagnosis.
Characterizations of two-photon absorption process induced by defects in aluminum nitride using Z-scan method
Authors: Zhou Jingan , Li Tao , Zhao Xuan , Zhang Xiang , Doumani Jacques , Xu Mingfei , He Ziyi , Luo Shisong , Mei Zhaobo , Chang Cheng , Robinson Jacob T , Ajayan Pulickel M , Kono Junichiro , Zhao Yuji 
Published: May 2024

Abstract
In this work, we reported two-photon absorption (TPA) measurements for aluminum vacancies in Aluminum nitride single crystals. We measured the linear transmission and identified the defect levels. Using the Z-scan method, we measured the TPA coefficients of the transitions between defect levels from 380 nm to 735 nm. The transition occurs between the aluminum vacancies defect levels. Furthermore, the power dependence shows good linear fitting, confirming the TPA mechanism. These results will be helpful for the design and fabrication of ultra-low loss waveguides and integrated photonics in the ultraviolet spectral range.
An operational matrix strategy for time fractional Fokker-Planck equation in an unbounded space domain
Authors: Heydari M H , Azin H , Hosseini S E 
Published: May 2024

Abstract
In this study, the Caputo fractional derivative is used to define time fractional Fokker-Planck equation in an unbounded domain. To solve this equation, the Jacobi polynomials together with the tanh-Jacobi functions are employed. The operational matrices of the classical and fractional derivatives of these basis functions are obtained to use them in constructing a numerical method for the expressed equation. In the proposed method, the introduced basis functions are used simultaneously to approximate the equation’s unknown solution. More precisely, the shifted Jacobi polynomials are applied to approximate the solution in the temporal direction and the tanh-Jacobi functions are utilized to approximate the solution in the spatial direction. By substitute the expressed approximation into the equation and employing the introduced operational matrix, solving the problem under consideration transforms into solving an algebraic system of equations, which can be solved easily. The accuracy and efficiency of the presented method are investigated numerically by solving some numerical examples. The reported results confirms the high accuracy of the established method.
Low energy alpha particles dose mapping with a combination of CR-39 detector and a high resolution flatbed scanner
Authors: Mohamed Amal , Abdel-Mageed M , El Ghazaly M , El-Naggar Hala I , Aboelmaaref Amal , Al-Sayed A 
Published: May 2024

Abstract
The potential of a combination of the well-known CR-39 detector and a high-resolution flatbed scanner for low energy alpha particles dose mapping is investigated. The CR-39 detectors were irradiated with perpendicular incident 4 MeV alpha particles of doses 0.009, 0.018, 0.033, 0.051, 0.067, 0.134, and 0.164 Gy, thereafter, etched in 6.25 N NaOH at 70 °C. The CR-39 detectors were scanned with Canon CanScan 9000F Mark II of spatial resolution of 9600 dpi and color depth of 48 bit. The measurements reveal that the pixel values for different color channels are correlated linearly with 4 MeV alpha particles dose at the etching times of 2 h, 3 h, and 4 h. For blue channel, the maximum sensitivity was −53178 ± 1463 pixel value/Gy at etching time of 4 h, compared to −15290 ± 2004 pixel value/Gy, and −42255 ± 840 pixel value/Gy at 2 h and 3 h respectively, the negative sign indicates the pixel values decrease as the 4 MeV alpha particles dose increases. While for etching times, 5 h and 6 h, the pixel values decrease exponentially as the 4 MeV alpha particles dose increases. For prolonged etching time, the pixel values are non-monotonic function of alpha particles dose. The optical density was evaluated as a function of etching time (removal thickness) of CR-39 irradiated with different doses. For 0.009 Gy, and 0.018 Gy doses of alpha particles, the optical density is linearly correlated with the etching time; for other doses, the optical density is not a monotonic function of the etching time. These new findings pave the way to use the combination of the CR-39 detector and high-resolution flatbed scanner for dose mapping of alpha particles and heavy ions over large-scale areas, applying etching conditions for each particle type and corresponding energy, that produce maximum sensitivity and linearity.