bluuebunny/crossref_metadata_2025_split huggingface dataset:
Three-qubit-embedded split Cayley hexagon is contextuality sensitive
Authors: Holweck Frédéric , de Boutray Henri , Saniga Metod 
Published: May 2022

AbstractIn this article, we show that sets of three-qubit quantum observables obtained by considering both the classical and skew embeddings of the split Cayley hexagon of order two into the binary symplectic polar space of rank three can be used to detect quantum state-independent contextuality. This reveals a fundamental connection between these two appealing structures and some fundamental tools in quantum mechanics and quantum computation. More precisely, we prove that the complement of a classically embedded hexagon does not provide a Mermin–Peres-like proof of the Kochen–Specker theorem whereas that of a skewly-embedded one does.
Dynamics of radiative Williamson hybrid nanofluid with entropy generation: significance in solar aircraft
Authors: Hussain Syed M. 
Published: May 2022

AbstractSun based energy is the chief source of heat from the sun, and it utilizes in photovoltaic cells, sun-based power plates, photovoltaic lights and sun-based hybrid nanofluids. Specialists are currently exploring the utilization of nanotechnology and sun-based radiation to further develop flight effectiveness. In this analysis, a hybrid nanofluid is moving over an expandable sheet. Analysts are presently exploring the utilization of nanotechnology and sunlight-based radiation to further develop avionics productivity. To explore the heat transfer rate phenomenon, a hybrid nanofluid stream is moving towards a trough having a parabolic type shape and is located inside of solar airplane wings. The expression used to depict the heat transfer phenomenon was sun based thermal radiation. Heat transfer proficiency of airplane wings is evaluated with the inclusion of distinguished effects like viscous dissipation, slanted magnetic field and solar-based thermal radiations. The Williamson hybrid nanofluid past an expandable sheet was read up for entropy generation. The energy and momentum expressions were solved numerically with the utilization of the Keller box approach. The nano solid particles, which are comprised of copper (Cu) and Graphene oxide, are dispersed utilizing SA (Sodium alginate) as an ordinary liquid (GO). A huge number of control factors, for example, temperature, shear stress, velocity, frictional element along with Nusselt number are investigated in detail. Intensification of thermal conduction, viscous dissipation and radiation improve the performance of airplane wings subjected to heat transmission. Hybrid nanofluid performance is much better than the ordinary nanofluid when it comes to heat transmission analysis.
Automated amplification-free digital RNA detection platform for rapid and sensitive SARS-CoV-2 diagnosis
Authors: Shinoda Hajime , Iida Tatsuya , Makino Asami , Yoshimura Mami , Ishikawa Junichiro , Ando Jun , Murai Kazue , Sugiyama Katsumi , Muramoto Yukiko , Nakano Masahiro , Kiga Kotaro , Cui Longzhu , Nureki Osamu , Takeuchi Hiroaki , Noda Takeshi , Nishimasu Hiroshi , Watanabe Rikiya 
Published: May 2022

AbstractIn the ongoing COVID-19 pandemic, rapid and sensitive diagnosis of viral infection is a critical deterrent to the spread of SARS-CoV-2. To this end, we developed an automated amplification-free digital RNA detection platform using CRISPR-Cas13a and microchamber device (opn-SATORI), which automatically completes a detection process from sample mixing to RNA quantification in clinical specimens within ~9 min. Using the optimal Cas13a enzyme and magnetic beads technology, opn-SATORI detected SARS-CoV-2 genomic RNA with a LoD of < 6.5 aM (3.9 copies μL−1), comparable to RT-qPCR. Additionally, opn-SATORI discriminated between SARS-CoV-2 variants of concern, including alpha, delta, and omicron, with 98% accuracy. Thus, opn-SATORI can serve as a rapid and convenient diagnostic platform for identifying several types of viral infections.
Space object identification via polarimetric satellite laser ranging
Authors: Bartels Nils , Allenspacher Paul , Hampf Daniel , Heidenreich Bernhard , Keil Denise , Schafer Ewan , Riede Wolfgang 
Published: May 2022

AbstractLow Earth orbits are becoming congested. The rapid identification and precise orbit determination of space objects is mandatory for space management. Satellite laser ranging (SLR) enables precise orbit determination by measuring the two-way photon travel time of laser pulses from a ground station to satellites equipped with retroreflectors. Here we propose polarization-modulated SLR, where specially designed retroreflectors positioned on a satellite switch the polarization state of received polarized photons and reflect them back to a ground station for analysis. Satellite identifiers can be coded into arrays of reflectors with different polarizing properties, while the orbit determining capability of conventional SLR is maintained. We design, build and test polarized light-switching retroreflector assemblies and investigate the feasibility of accurate signal measurement from SLR ground stations. The approach is passive, straightforward to integrate and requires no electricity. Polarization-modulated SLR could contribute to increasing demands of space object monitoring, for example of mega-constellations or during cluster launches.
Upcycling end-of-life vehicle waste plastic into flash graphene
Authors: Wyss Kevin M. , De Kleine Robert D. , Couvreur Rachel L. , Kiziltas Alper , Mielewski Deborah F. , Tour James M. 
Published: May 2022

AbstractResponsible disposal of vehicles at the end of life is a pressing environmental concern. In particular, waste plastic forms the largest proportion of non-recycled waste material from light-duty vehicles, and often ends up in a landfill. Here we report the upcycling of depolluted, dismantled and shredded end-of-life waste plastic into flash graphene using flash Joule heating. The synthetic process requires no separation or sorting of plastics and uses no solvents or water. We demonstrate the practical value of the graphene as a re-inforcing agent in automotive polyurethane foam composite, where its introduction leads to improved tensile strength and low frequency noise absorption properties. We demonstrate process continuity by upcycling the resulting foam composite back into equal-quality flash graphene. A prospective cradle-to-gate life cycle assessment suggests that our method may afford lower cumulative energy demand and water use, and a decrease in global warming potential compared to traditional graphene synthesis methods.
Gesture Development in Chinese-Speaking Preschool Children With Autism and the Roles of Parental Input and Child-Based Factors
Authors: Huang Ying , Cheng Chun-Ho , Law Wing-Wun , Wong Tiffany , Leung Oi-Ki , So Wing-Chee 
Published: May 2022

Purpose:
Children with autism are found to have delayed and heterogeneous gesture abilities. It is important to understand the growth of gesture abilities and the underlying factors affecting its growth. Addressing these issues can help to design effective intervention programs.

Method:

Thirty-five Chinese-speaking preschoolers with autism spectrum disorder (
M
age
= 4.89 years,
SD
= 0.91; four girls) participated in four play sessions with their parents over 9 months. Their child-based factors including autism severity, intellectual functioning, and expressive language abilities were assessed. The gestures (deictic, iconic, and conventional) of the children and their parents were coded. Growth curve analyses were conducted to examine individual growth trajectories and the roles of child-based factors and parental input in shaping the children's gesture development.

Results:
Child-based factors and parental input predicted gesture development differently. Parents' gestures positively predicted their children's gestures of the same type. Autism severity negatively predicted iconic and conventional gestures. Overall growth was found in deictic rather than iconic and conventional gestures. Subgroup variation was also found. Specifically, children with better expressive language ability showed a decrease in deictic gestures. An increase in iconic and conventional gestures was found in children with more severe autism and those with poorer expressive language ability and intellectual functioning, respectively.

Conclusions:
Different types of gestures may have different growth trajectories and be predicted by different child-based factors. Particular attention should be given to children who never produced iconic gestures, which is more challenging and may not develop over a short period, and hence require direct instruction.
Study on abnormal power failure shutdown control of magnetic suspension centrifugal compressor
Authors: Hu Yusheng , Li Liyi , Guo Weilin , Li Yan 
Published: May 2022

AbstractThe rotor of a magnetic suspension centrifugal compressor is supported by magnetic bearing, and a power failure will cause the high‐speed rotor to fall directly onto the protective bearings, affecting the reliability of the compressor. To solve this problem, this paper proposes an abnormal power failure shutdown control method with semi‐switching modulation of the inverter. Firstly, the overall scheme of abnormal power failure shutdown control is designed, and its feasibility is analysed in detail through mathematical modelling. Secondly, aiming at the non‐linear, time‐varying and gain uncertainty characteristics of the control system, a voltage control strategy based on parametric self‐regulating sliding‐mode variable structure is proposed, and the stability is analysed. Finally, the method proposed in this paper is experimentally verified, the results show that this method does not depend on the electric angle of the motor compared to existing methods, and the rotor can achieve a zero‐drop speed shutdown, which greatly improves the reliability of the magnetic suspension centrifugal compressor.
Corrosion reaction kinetics and high‐temperature corrosion testing of contact element strips in ultra‐high voltage bushing based on the phase‐field method
Authors: Jin Shoufeng , Tian Huidong , Wang Qingyu , Ren Ting , Liu Peng , Peng Zongren 
Published: May 2022

AbstractFor the structural characteristics of power transmission equipment such as bushings, the plug‐in structure is mostly used for current‐carrying connections owing to the large size and long distance at high voltage levels. The contact element strip is the key component of the current‐carrying structure, carrying the combined electrical–thermal effect. Its electrical current‐carrying performance is important. In recent years, discharge failures caused by the overheating failure of electrical connections have occurred from time to time. However, there have been relatively few studies on the failure mechanism of the electrical connection structures of high‐voltage power transmission equipment, such as bushings. In this study, from the perspective of corrosion reaction kinetics, a two‐dimensional phase‐field model of high‐temperature corrosion is established to obtain the carrier concentration distribution in the film. The effects of temperature, gas partial pressure, film thickness, and applied electric field on the growth rate of corrosion reaction film were calculated using the finite element method. At the same time, with the contact element strips used in the bushing as the test object, a corrosion test was carried out in SF6 atmosphere to simulate the high‐temperature corrosion caused by the uneven current carrying of the contacts in actual operating conditions. Combined with the effect of temperature on the film growth rate, the contact area was the most severely corroded location. The simulation can provide a qualitative analysis for the contact degradation test and a new method for studying the factors affecting the corrosion mechanism of contact element strips.
A highly efficient isolated single‐phase variable frequency AC–AC converter with flexible buck‐boost factor, inherent safe commutation, and continuous current
Authors: Abdoli Iman , Mosallanejad Ali 
Published: May 2022

AbstractThis paper proposes an isolated single‐phase flexible buck‐boost ac–ac converter with an adjustable output frequency and optimized semiconductors count. One power switch only operates with a high switching frequency in each half‐cycle of the input voltage, and others operate with a low switching frequency equal to the output frequency. Thanks to this feature, the converter provides high efficiency, 95.5% in step‐down mode and 91.5% in step‐up mode. The galvanic isolation between the input and output sides is also regarded for the proposed topology by employing two coupled inductors. The converter has an inherent safe commutation by utilizing a simple modulation strategy. Thus, additional snubber circuits and complex commutation strategies are no longer required. The proposed converter does not require any input filter as it operates with the continuous input current. This paper presents the operating principle of the proposed topology in detail. For this purpose, a 200‐W experimental prototype has been designed to examine the performance of the suggested converter for different operating modes and output frequencies. Results confirm the theory and operation of the proposed topology.
Tow ship interference mitigation in shallow ocean using correlated mode decomposition technique
Authors: M Remadevi , S Suneera , N Sureshkumar , R Rajesh 
Published: May 2022

AbstractPassive towed arrays assume great importance in shallow ocean surveillance, owing to their capability to detect long range underwater acoustic targets. The detection and classification performance is severely impacted by the tow ship interference manifestation in the pressure sensor array towed behind the ship. In this work, a robust tow ship multipath interference mitigation algorithm intended for shallow ocean operation is developed, based on the dynamic mode decomposition (DMD) technique, which in turn exploits the coherent structure of the multimode acoustic wave propagation inherent in the shallow ocean scenario. The proposed algorithm effectively identifies the coherent normal mode interference subspace and eliminates its components from the received array data vector. Further, this approach compliments the shallow ocean normal mode acoustic field propagation and ensures simultaneous mitigation of all the multipath generated interferences, making it a superior method to reduce the azimuth spread of the interference and tow ship spectral leakage into the panoramic detection beams. This greatly enhances the detection and classification capability of sonar, especially for distant stealthy targets. The efficacy of the algorithm is validated using Monte Carlo simulations and further ratified by experimental data captured during the field trials in the Arabian Sea.
A data‐driven Dir‐MUSIC method based on the MLP model
Authors: Xu Wencong , Hu Yue , Li Jianxun 
Published: May 2022

AbstractThe directional multiple signal classification (Dir‐MUSIC) algorithm based on antenna gain array manifold has been proposed to find the direction of the partial discharge source successfully in substations, however, a non‐linear optimisation problem in this algorithm is usually time‐consuming. To achieve real‐time feature, a data‐driven Dir‐MUSIC method based on the multilayer perception model is proposed to speed up the computing process and simultaneously guarantee the accuracy. Pre‐trained the multilayer perception model, the non‐linear optimisation problem can be treated as a function can be calculated directly. Input of the model is the noise matrix which can be uniquely calculated with a certain matrix measurement, and output is the estimated direction of the partial discharge source. Simulation results demonstrate that the proposed method has an excellent efficiency and relatively high accuracy, and the computing time can match the real‐time demand. Additionally, two effective improvements are proposed to raise the direction accuracy and stability. Specifically, mean error is reduced from 2.58° to 2.22° with the first improvement, and from 2.58° to 1.00° with the second improvement.
The stellar content of the ROSAT all-sky survey
Authors: Freund S. , Czesla S. , Robrade J. , Schneider P. C. , Schmitt J. H. M. M. 
Published: May 2022

Aims. We present and apply a method to identify the stellar content of the ROSAT all-sky survey (RASS).
Methods. We performed a crossmatch between the RASS sources and stellar candidates selected from Gaia Early Data Release 3 (EDR3) and estimated stellar probabilities for every RASS source from the geometric properties of the match and additional properties, namely the X-ray to G-band flux ratio and the counterpart distances.
Results. A comparison with preliminary detections from the first eROSITA all-sky survey (eRASS1) show that the positional offsets of the RASS sources are larger than expected from the uncertainties given in the RASS catalog. From the RASS sources with reliable positional uncertainties, we identify 28 630 (24.9%) sources as stellar; this is the largest sample of stellar X-ray sources to date. Directly from the stellar probabilities, we estimate the completeness and reliability of the sample to be about 93% and confirm this value by comparing it to the identification of randomly shifted RASS sources, preliminary stellar eRASS1 identifications, and results from a previous identification of RASS sources. Our stellar RASS sources contain sources of all spectral types and luminosity classes. According to their position in the color-magnitude diagram, many stellar RASS sources are young stars with ages of a few 107 yr or binaries. When plotting the X-ray to bolometric flux ratio as a function of the color, the onset of convection and the saturation limit are clearly visible. We note that later-type stars reach continuously higher FX/Fbol values, which is probably due to more frequent flaring. The color distribution of the stellar RASS sources clearly differs from the unrelated background sources. We present the three-dimensional distribution of the stellar RASS sources that shows a clear increase in the source density near known stellar clusters.
Effect of laterality and fatigue in peroneal electromechanical delay
Authors: Flevas Dimitrios A. , Pappas Evangelos , Ristanis Stavros , Giakas Giannis , Vekris Marios , Georgoulis Anastasios D. 
Published: May 2022

Introduction: Extremity dominance is one of the intrinsic factors that have been identified for ankle sprains. Electromechanical delay (EMD) is an integral part of the peroneal motor response and, therefore, substantial in preventing ankle sprains. This study aimed to investigate the effect of laterality on EMD times before and after fatigue.Methods: Fifteen healthy male volunteers participated in the study. Measurements were taken with the ankle in a neutral (0°) position, and all subjects followed an isokinetic fatigue protocol. Repeated ANOVA was used for statistical analysis, and theαlevel was set a priori atp ≤ 0.05.Results: No significant difference was noted in EMD times between the dominant and non-dominant legs of the volunteers (p = 0.940). Fatigue caused a significant increase in EMD by 10–15 ms (p = 0.003), while the leg × fatigue interaction was not significant (p = 0.893).Conclusions: In a non-injured athlete, both ankles seem to be under the same protection of the reactive response of the peroneal muscles. Therefore, athletes should be aware that both their extremities are equally exposed to the danger of an ankle injury. Also, fatigued ankles demonstrate longer EMD times, implying that improving resistance to fatigue may add another layer of protection that has the potential to prevent ankle sprain recurrence.
Arbeit mit dem Symptomenlexikon am Beispiel von
Sepia-Krankengeschichten
Authors: Gubo Edgar 
Published: May 2022

ZusammenfassungKrankengeschichten, die mit dem Symptomenlexikon gelöst wurden, sagen
mehr über die gewählte Methode aus als über das
Arzneimittel selbst, sodass in diesem Artikel vor allem die Vorzüge des
Symptomenlexikons und die methodische Umsetzung in der Praxis besprochen
werden.
Kinderwunsch bei Endometriose
Authors: Albrecht Daniela 
Published: May 2022

ZusammenfassungDer Zusammenhang von Endometriose und unerfülltem Kinderwunsch ist
bekannt und wird mittels operativer Entfernung der peritonealen
Endometrioseherde behandelt. In diesem Fall konnte trotz mehrmaliger Operationen
keine Schwangerschaft initiiert werden. Unter der Behandlung mit Sepia
officinalis wurde die Patientin innerhalb eines Jahres schwanger und konnte ein
gesundes Kind gebären. Die Anamnese, Symptomenauswahl, Repertorisation
und der Fallverlauf werden hier dargestellt. Neben der Erfüllung des
Kinderwunsches konnten die Zyklusbeschwerden deutlich und anhaltend verbessert
werden. Gleichzeitig wurde das vorbestehende atopische Ekzem auf ein Minimum
reduziert.
Stramonium in seiner Ambivalenz: zwischen Gewalttätigkeit und
religiöser Sehnsucht
Authors: Hadulla Michael M. 
Published: May 2022

ZusammenfassungDatura stramonii gehört neben Belladonna und Hyoscyamus zu den
sogenannten Hexenkräutern und ist somit in der Gruppe der Solanaceae
angesiedelt. Alle Solanaceae haben etwas Sinistres, Dunkles und
Gefährliches: Bei Stramonium ist es die Gewalttätigkeit. Hierzu
dient uns als Protagonist in exemplarischer Weise Caravaggio. Etliche
Kasuistiken aus der heutigen Praxis – sozusagen „kleine
Caravaggios“ – unterstreichen das Gesagte.
Die Nationale Demenzstrategie
Authors: Jessen Frank 
Published: May 2022

ZusammenfassungIm Jahr 2020 wurde die unter der Leitung des Bundesministeriums für
Gesundheit, des Bundesministeriums für Familie, Senioren, Frauen und
Jugend und der Deutschen Alzheimer Gesellschaft entwickelte Nationale
Demenzstrategie verabschiedet. Grundlage hierfür war ein
Entwicklungsprozess seit Anfang 2019, an dem wesentliche Akteure der Politik,
der Gesellschaft, der Sozialversicherungsträger, der Pflege und der
Medizin teilgenommen haben. Die Nationale Demenzstrategie hat zum Ziel das Leben
und die Versorgung von Menschen mit Demenz in Deutschland zu verbessern. Hierzu
wurden vier Handlungsfelder definiert, die die Bereiche der gesellschaftlichen
Teilhabe, der Unterstützung und Beratung von Erkrankten und
Angehörigen, der Pflege und medizinischen Versorgung sowie der Forschung
umfassen. Insgesamt wurden 27 Ziele mit 162 konkreten Einzelmaßnahmen
formulierte. Eine Evaluation der Umsetzung soll 2026 stattfinden. Die Breite der
Themen und auch der eingebundenen Beteiligten macht unter anderem die
Stärke der Demenzstrategie aus. Inhaltlich fehlt leider eine Forderung
nach Verbesserung gerontopsychiatrischer, stationär-neurologischer und
stationär-geriatrischer Versorgungsstrukturen in Bezug auf Demenz sowie
nach einer adäquaten Ausstattung und Einbindung von
Gedächtnisambulanzen in die Versorgung. Damit verbunden fehlt
konzeptionell ein Bezug zu dem heutigen medizinischen Verständnis von
Demenzen als Folge spezifischer Gehirnerkrankungen mit präklinischen und
mild symptomatischen Verläufen vor dem Demenzstadium sowie zu der
biomarkerbasierten Frühdiagnostik und zu zukünftigen
molekularspezifischen krankheitsmodifizierenden Behandlungen. Ferner fehlt ein
Maßnahmenpaket zur Ausschöpfung von
Präventionspotentialen durch Reduktion von Risikofaktoren für
Demenz auf der Ebenen der Bevölkerung. Unabhängig davon ist die
Nationale Demenzstrategie von großer Bedeutung für Erkrankte und
Angehörige. Sie kann die Lebenssituation der Menschen mit Demenz in
Deutschland nachhaltig verbessern.