bluuebunny/crossref_metadata_2025_split huggingface dataset:
Revocable identity‐based matchmaking encryption in the standard model
Authors: Jiang Zhe , Wang Xiwen , Zhang Kai , Gong Junqing , Chen Jie , Qian Haifeng 
Published: May 2023

AbstractIdentity‐based Matchmaking Encryption (IB‐ME) is an extension notion of matchmaking encryption (CRYPTO 2019), where a sender and a receiver can specify an access policy for the other party. In IB‐ME, data encryption is performed by not only a receiver identity but also a sender's encryption key. Nevertheless, previous IB‐ME schemes have not considered the problem of efficient revocation. Hence, the authors introduce a new notion of revocable IB‐ME (RIB‐ME) and formalise the syntax and security model of RIB‐ME. In particular, the authors give an effective and simple construction of RIB‐ME in the standard model, whose security is reduced to the hardness of decisional bilinear Diffie—Hellman problem and computational Diffie—Hellman problem. In addition, the authors show two extensions of our RIB‐ME scheme to consider chosen‐ciphertext security and forward privacy.
Energy‐efficient train timetabling for a medium‐speed maglev line considering propulsion and suspension energy consumption
Authors: Lai Qingying , Liu Jun , Guo Shudong , Shi Xianliang , Zhao Chen , Ju Miaoyu 
Published: May 2023

AbstractThis paper addresses the energy‐efficient train timetabling problem for MSM systems, where both propulsion and suspension energy consumption are considered. The timetable design problem is modelled as a bi‐level model for a complete two‐way MSM line. The upper level determines the train departure time at the first station, which makes train operations more convenient for passengers. The lower level uses an empirical description of the train energy consumption as a function of segment running times, and an energy‐efficient timetable optimization model is built. In doing so, all the services in both directions along a certain planning horizon are considered while attending to a known passengers’ demand. Moreover, the convenience of considering energy consumption as part of a broad objective function that includes other relevant costs is pointed out. Then, a unified sequential solution algorithm is developed for an efficient and accurate solution of the bi‐level model. Experiments show that the proposed framework can generate a holographic timetable of energy‐efficient MSM containing multi‐dimensional variables such as time, space, velocity, and electrical quantities.
The impact of dust evolution on the dead zone outer edge in magnetized protoplanetary disks
Authors: Delage Timmy N. , Gárate Matías , Okuzumi Satoshi , Yang Chao-Chin , Pinilla Paola , Flock Mario , Stammler Sebastian Markus , Birnstiel Tilman 
Published: May 2023

Context. The dead zone outer edge corresponds to the transition from the magnetically dead to the magnetorotational instability (MRI) active regions in the outer protoplanetary disk midplane. It has been previously hypothesized to be a prime location for dust particle trapping. A more consistent approach to access such an idea has yet to be developed, since the interplay between dust evolution and MRI-driven accretion over millions of years has been poorly understood.
Aims. We provide an important step toward a better understanding of the MRI–dust coevolution in protoplanetary disks. In this pilot study, we present a proof of concept that dust evolution ultimately plays a crucial role in the MRI activity.
Methods. First, we study how a fixed power-law dust size distribution with varying parameters impacts the MRI activity, especially the steady-state MRI-driven accretion, by employing and improving our previous 1+1D MRI-driven turbulence model. Second, we relax the steady-state accretion assumption in this disk accretion model, and partially couple it to a dust evolution model in order to investigate how the evolution of dust (dynamics and grain growth processes combined) and MRI-driven accretion are intertwined on million-year timescales, from a more sophisticated modeling of the gas ionization degree.
Results. Dust coagulation and settling lead to a higher gas ionization degree in the protoplanetary disk, resulting in stronger MRI-driven turbulence as well as a more compact dead zone. On the other hand, fragmentation has an opposite effect because it replenishes the disk in small dust particles which are very efficient at sweeping up free electrons and ions from the gas phase. Since the dust content of the disk decreases over millions of years of evolution due to radial drift, the MRI-driven turbulence overall becomes stronger and the dead zone more compact until the disk dust-gas mixture eventually behaves as a grain-free plasma. Furthermore, our results show that dust evolution alone does not lead to a complete reactivation of the dead zone. For typical T-Tauri stars, we find that the dead zone outer edge is expected to be located roughly between 10 au and 50 au during the disk lifetime for our choice of the magnetic field strength and configuration. Finally, the MRI activity evolution is expected to be crucially sensitive to the choice made for the minimum grain size of the dust distribution.
Conclusions. The MRI activity evolution (hence the temporal evolution of the MRI-induced α parameter) is controlled by dust evolution and occurs on a timescale of local dust growth, as long as there are enough dust particles in the disk to dominate the recombination process for the ionization chemistry. Once that is no longer the case, the MRI activity evolution is expected to be controlled by gas evolution and occurs on a viscous evolution timescale.
ZZ Ceti stars of the southern ecliptic hemisphere re-observed by TESS
Authors: Bognár Zsófia , Sódor Ádám , Clark Ian R. , Kawaler Steven D. 
Published: May 2023

Context. In 2020, a publication presented the first-light results for 18 known ZZ Ceti stars observed by the TESS Space Telescope during the first survey observations of the southern ecliptic hemisphere. However, in the meantime, new measurements have become available from this field, in many cases with the new, 20 s ultrashort cadence mode.
Aims. We investigated the similarities and differences in the pulsational behaviour of the observed stars between the two observational seasons, and searched for new pulsation modes for asteroseismology.
Methods. We performed Fourier analysis of the light curves using the standard pre-whitening process, and compared the results with frequencies obtained from the earlier data. Utilising the 2018 version of the White Dwarf Evolution Code, we also performed an asteroseismic analysis of the different stars. We searched for models with seismic distances in the vicinity of the Gaia geometric distances.
Results. We detected several new possible pulsation modes of the studied pulsators. In the case of HE 0532-5605, we found a similar brightening phase to the one presented in the 2020 first-light paper, which means this phenomenon is recurring. Therefore, HE 0532-5605 appears to be a new outbursting DAV star. We also detected a lower-amplitude brightening phase in the star WD J0925+0509. However, this case has proven to be the result of the passage of a Solar System object in the foreground. We accept asteroseismic model solutions for six stars.
Discovery of a substellar companion in the TESS light curve of the δ Scuti/γ Doradus hybrid pulsator HD 31221
Authors: Kálmán Sz. , Derekas A. , Csizmadia Sz. , Szabó Gy. M. , Hegedűs V. , Smith A. M. S. , Kovács J. , Ziegler C. , Pál A. , Szabó R. , Parviainen H. , Murgas F. 
Published: May 2023

Context. Close-in, sub-stellar companions to δ Scuti type stars present a highly suitable testbed for examining how planetary-mass objects can influence stellar pulsations.
Aims. We aim to constrain the mass of HD 31221 b, probe its atmosphere, and demonstrate how it affects the pulsational pattern of its host, HD 31221.
Methods. We made use of the available data from the short-cadence Transiting Exoplanet Survey Satellite (TESS). We modeled the nine observed transits and the out-of-phase variations, including Doppler beaming, ellipsoidal variations, and the reflection effect. We also incorporated ground-based photometry from the MuSCAT2 imager installed at the 1.52 m Telescopio Carlos Sanchez in the Teide Observatory, Spain, as well as speckle interferometry from the Southern Astrophysical Research telescope.
Results. We found HD 31221 b to have an orbital period of 4.66631 ± 0.00011 days, with a radius of 1.32 ± 0.14 RJ and a mass of 11.5 ± 10.3 MJ (from the ellipsoidal effect), making it consistent with either a brown dwarf or a giant planet. As HD 31221 is a rapid rotator (v sin I⋆ = 175.31 ± 1.74 km s−1), we deduced the spin-orbit misalignment to be λ = −121.6 ± 14.4° and I⋆ = 55.9 ± 11.3°. The phase curve is dominated by the reflection effect, with a geometric albedo of 1.58 ± 0.50. We also found evidence that HD 31221 is a δ Scuti/γ Doradus hybrid pulsator. There are three cases for which the 3rd, 85th, and 221st orbital harmonics almost exactly coincide with peaks in the Fourier spectrum of the star, hinting at tidally perturbed stellar oscillations.
Conclusions. HD 31221 b is the third substellar object that is found to be disrupting the pulsations of its host, following HAT-P-2 and WASP-33. Additional photometric observations by CHEOPS and/or PLATO can be used to further constrain its mass and provide a more in-depth analysis of its atmosphere.
Residual eccentricity of an Earth-like planet orbiting a red giant Sun
Authors: Lanza A. F. , Lebreton Y. , Sallard C. 
Published: May 2023

Context. The late phases of the orbital evolution of an Earth-like planet around a Sun-like star are revisited in order to consider the effect of density fluctuations associated with convective motions inside the star.
Aims. Such fluctuations produce a random perturbation of the stellar outer gravitational field that excites a small residual eccentricity in the orbit of the planet. This counteracts the effects of tides, which tend to circularize the orbit.
Methods. We computed the power spectrum of the outer gravitational field fluctuations of the star in the quadrupole approximation and studied their effects on the orbit of the planet using a perturbative approach. The residual eccentricity is found to be a stochastic variable showing a Gaussian distribution.
Results. Adopting a model of the stellar evolution of our Sun computed with Modules for Experiments in Stellar Astrophysics (MESA), we find that the Earth will be engulfed by the Sun when it is close to the tip of the red giant branch phase of evolution. We find a maximum mean value of the residual eccentricity of ~0.026 immediately before engulfment. Considering an Earth-mass planet with an initial orbital semimajor axis sufficiently large to escape engulfment, we find that the mean value of the residual eccentricity is greater than 0.01 for an initial separation of up to ~l.4 au.
Conclusions. The engulfment of the Earth by the red giant Sun is found to be a stochastic process instead of being deterministic as assumed in previous studies. If an Earth-like planet escapes engulfment, its orbit around its remnant white dwarf (WD) star will be moderately eccentric. Such a residual eccentricity of on the order of a few hundredths can play a relevant role in sustaining the pollution of the WD atmosphere by asteroids and comets, as observed in several objects.
Hilfsmittel im Alltag für die rheumatische Hand – packen wir es an!
Authors: Maria Pothmann Carina Eva , Koch Ruth , Bause Ludwig 
Published: May 2023

ZUSAMMENFASSUNGIn diesem Artikel werden die verschiedenen Hilfsmittel für betroffene Patienten
1
mit Deformitäten und Einschränkungen der Hand im Rahmen rheumatischer Erkrankungen zusammengefasst und veranschaulicht. Die Ursachen und Formen der Destruktionen der Hand werden erläutert. Die verschiedenen Wirkprinzipien von Hilfsmitteln und Vermeidungstaktiken legen wir dar. Zudem stellen wir den Weg der Hilfsmittelversorgung, aktuelle Leitlinien und die Beratung und Anpassung durch die Ergotherapie vor. Die Diskrepanz von positivem Einfluss einer frühzeitigen Hilfsmittelversorgung Betroffener und der tatsächlich geringen Zahl der Verordnungen wird diskutiert. Die Tücken der Evidenzlage werden aufgegriffen. Durch Information und leitliniengerechtes Handeln kann das Leben betroffener Patienten nachhaltig positiv verändert werden, helfen Sie mit!
Orthesen an der Hand
Authors: Scholz Roger 
Published: May 2023

ZUSAMMENFASSUNGDie Hand als besonders unter funktionellen Gesichtspunkten wesentlicher Teil des Haltungs- und Bewegungsapparates stellt an die orthopädietechnische Versorgung sehr hohe Ansprüche. Je nach Indikation stehen stabilisierende, schmerzlindernde, korrigierende oder funktionelle Aspekte, bisweilen auch deren Kombination im Vordergrund. Eine hohe Individualität, ein oft erheblicher Zeit- und Kostenaufwand stehen einer nicht selten nur geringeren Akzeptanz des Hilfsmittels gegenüber. Die Kenntnis des Behandlungszieles, die Einbindung des Patienten in komplexe multimodale Therapien und die intensive Gebrauchsschulung können diese Herausforderungen bewältigen helfen. Die zumeist mangelhafte Ergebnisevaluation der Orthesenbehandlung allgemein und der an der Hand im Besonderen ist seit vielen Jahren eine bekannte Schwierigkeit, die allerdings zumindest zu einem großen Teil methodenbedingt ist.
Wirbelsäulenorthese bei entzündlich rheumatischen Krankheiten
Authors: Brandt Jörg 
Published: May 2023

ZUSAMMENFASSUNGOrthesen können Strukturen des Stütz- und Bewegungsapparates entlasten, stabilisieren, immobilisieren, korrigieren oder deren Bewegungsführung unterstützen. Mit modernen Werkstoffen lassen sich Flexibilität und Rigidität in unterschiedlichen Bewegungsrichtungen kombinieren. Sie gestatten die funktionelle Behandlung bei einer zunehmenden Zahl von Erkrankungen und vermeiden strukturgefährdende Immobilisation. Rheumatische Erkrankungen, die sekundäre Instabilitäten der Wirbelsäule nach sich ziehen, sind eine Domäne der konservativen Therapie mit Orthesen. Entlastung, Ruhigstellung und Bewegungsbegrenzung können mit Orthesen unterschiedlicher Bauweisen als individuelle Maßanfertigung oder konfektionierte Fertigteilorthese erreicht werden. Sie werden als alleiniges Therapiemittel oder ergänzend zu operativen Eingriffen eingesetzt.
Coronary Sparing Aneurysmectomy
Authors: Radner Caroline , Hagl Christian , Juchem Gerd , Dashkevich Alexey 
Published: May 2023

AbstractRepairing left ventricular aneurysms that form after myocardial infarction may be challenging, especially if located close to the important native coronary arteries. Here, we describe a rare case of anterolateral aneurysm of the basal LV wall and a safe, efficient approach for a patch plasty sparing the native left anterior descending.
Analysis of risk factors associated with cerebral angiography headache
Authors: Madeira Tiago , Correa Amanda Viguini Tolentino , Abranches Gabriela de Paula , Masruha Marcelo Rodrigues 
Published: May 2023

Abstract
Background Despite previous studies indicating a moderate/high incidence of angiography headache (AH), there is still limited data about the risk factors associated with its occurrence.
Objective The present study aimed to assess the associations among demographic, clinical, and technical characteristics of cerebral digital subtraction angiography (DSA) and the occurrence of AH.
Methods Cross-sectional analytical observational study with a sample comprised of individuals with a recommendation for elective DSA. Clinical interviews were conducted to assess the occurrence of AH, using a standardized questionnaire.
Results Among 114 subjects, the mean age was 52.8 (±13.8) years old, 75.4% (86/114) were women, 29.8% (34/114) had a history of migraines, and 10.5% (12/114) had chronic headaches. The overall frequency of AH was 45.6% (52/114). Of those, 88.4% (46/52) underwent 3D angiography, 7.7% (4/52) underwent aortography, and 1.9% (1/52) underwent both procedures. There was a statistically significant association between AH and previous history of migraine (odds ratio [OR]: 4.9; 95% confidence interval [CI] 1.62–14.7; p = 0.005) and 3D angiography (OR 6.62; 95%CI: 2.04–21.5; p = 0.002).
Conclusions 3D angiography is strongly associated with the occurrence of AH, which has never been reported before. The association between a previous history of migraine and AH confirms the results of previous studies.
History and national survey on reflex hammers: which is the chosen one of Brazilian neurologists?
Authors: Disserol Caio César Diniz , Meira Alex Tiburtino , Schramm Carla Caroline , Kondo Gustavo Koiti , Franklin Gustavo Leite , Pedroso José Luiz , Barsottini Orlando Graziani Povoas , Teive Hélio Afonso Ghizoni 
Published: May 2023

AbstractBackground Percussion is an important part of the neurological examination and reflex hammers are necessary to obtain it properly.Objective We aimed to review the historical aspects of the main reflex hammers and to define the favorite one of Brazilian neurologists.Methods We searched original and review articles about historical aspects of the reflex hammers in Scielo and Pubmed and conducted an online survey to investigate the favorite reflex hammer of Brazilian neurologists.Results In the first part, we describe the major milestones in the creation of the reflex hammers. Following, we exhibit the results of the online survey: Babinski-Rabiner was the most voted.Conclusions The origins of the reflex hammers goes back long before their creation, from a basic clinical examination method: percussion. Since the description of deep tendon reflexes and the creation of percussion hammers, much has been improved in this technique. Among all the hammers surveyed, the Babinski-Rabiner was the chosen one by a significant portion of Brazilian neurologists.
Theorizing sustainable, low-resource MT in development settings
Authors: Riemland Matt 
Published: May 2023

Abstract
This article conducts a meta-analysis of existing research to theorize how machine translation (MT) may help resolve underlying contradictions in the development sector that preclude the UN’s 10th Sustainable Development Goal: to reduce inequality within and among countries. Non-governmental organizations (NGOs) frequently work in dominant languages and neglect marginalized languages, reinforcing power imbalances between the Global North and Global South in development planning. MT between marginalized languages may improve collaboration between local communities to redress shared disadvantages. As an example, the article hypothesizes a sustainable, “low-tech” MT system pivoting through Spanish to translate between three Mayan languages in Guatemala: K’iche’, Q’eqchi’, and Mam. First, the article theorizes three key dimensions comprising the overall sustainability of low-resource MT in development: quality, social, and environmental. It then evaluates the sustainability of various MT architectures. Finally, it reaffirms the ability for indirect translation (classic pivot-based MT) to facilitate MT between low-resource languages.
A regression model for plasma reaction kinetics
Authors: Hanicinec Martin , Mohr Sebastian , Tennyson Jonathan 
Published: May 2023

Abstract
Machine learning (ML) is used to provide reactions rates appropriate for models of low temperature plasmas with a focus on A + B

→

C + D binary chemical reactions. The regression model is trained on data extracted from the QBD, KIDA, NFRI and UfDA databases. The regression model used a variety of data on the reactant and product species, some of which also had to be estimated using ML. The final model is a voting regressor comprising three distinct optimized regression models: a support vector regressor, random forest regressor and a gradient-boosted trees regressor model; this model is made freely available via a GitHub repository. As a sample use case, the ML results are used to augment the chemistry of a BCl3/H2 gas mixture.
A critical review on orthosilicate Li2MSiO4 (M = Fe, Mn) electrode materials for Li ion batteries
Authors: Pateriya Ravi Vikash , Tanwar Shweta , Sharma A L 
Published: May 2023

Abstract
The development of novel electrode materials with good electrochemical performances is necessary for the expanded and varied applications of lithium-ion batteries, and this development heavily relies on cathode materials. Due to excellent thermal stability, abundance, low cost, and environmental friendliness, orthosilicate cathode materials Li2MSiO4 (M = Fe, Mn) has received a lot of attention recently. The present review article gives a glimpse into the characteristics, advantages, and recent progress of orthosilicate cathode materials. This review starts with a brief history and working mechanism of batteries, the advantages of cathode materials followed by types of cathode materials, various synthesis methods, and different techniques used for their characterization. The most current initiatives to enhance orthosilicate Li2MSiO4 type electrochemical performances were introduced in this review. We provide a critical assessment of the efficient modification techniques for the orthosilicate Li2MSiO4 type cathode materials in particular. These potential cathode materials’ synthesis, structure, morphologies, and particularly electrochemical performances have been thoroughly examined. This evaluation, we hope, will clarify the sustained advancement of high-efficiency and reasonably priced Li-ion batteries.
Combined impacts of low oscillating magnetic field and Shliomis theory on mono and hybrid nanofluid flows with nonlinear thermal radiation
Authors: Alharbi Khalid Abdulkhaliq M , Shahmir Nazia , Ramzan Muhammad , Kadry Seifedine , Saeed Abdulkafi Mohammed 
Published: May 2023

Abstract
Hybrid nanofluids have become a popular choice for various engineering and industrial applications due to their advanced properties. This study focuses on investigating the consequences of a low oscillating magnetic field on the flow of unsteady mono and hybrid nanofluids over a vertically moving permeable disk. Initially, iron oxide nanoparticles are mixed with water to create a mono nanofluid, which is later transformed into a hybrid nanofluid by adding cobalt nanoparticles. The shape of nanoparticles used is brick-shaped, and an external magnetic field is applied to regulate the flow and heat transfer mechanism using ferromagnetic nanoparticles. Additionally, the nonlinear thermal radiative heat flux is considered for the heat transfer phenomenon. The momentum and rotational motion of the magnetic fluid caused by the rotating disk are formulated using the Shliomis fundamental concept. The numerical analysis of the ordinary differential equations (ODEs) is carried out using the bvp4c technique, and the results are presented in tabular form for the surface drag coefficient and heat transmission at the walls. Moreover, the temperature and velocity distributions are illustrated using graphical representations against relevant parameters. The findings highlight that for a constant negative value for the magnetization parameter

ϒ
<
0

,

the heat transfer rate for hybrid nanofluid is witnessed stronger at a volume fraction

ϕ

h
n
f

=
0.120

,

whereas a minimal heat transfer rate is observed for positive values of magnetization parameter

ϒ
>
0

at the same value of volume fraction.