bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance assessments of the material for the traction motor cores of an electric racing kart
Authors: Demir Uğur , Kocabıçak Zeliha Kamış 
Published: July 2021

Abstract
This paper presents the performance assessments for the traction motor of an electric racing kart, considering the different core materials. Firstly, the appropriate traction motor type is determined as a brushless direct current motor (BLDC) due to the superior features such as torque, efficiency, cooling performance and reliability. Thereafter the BLDC traction motor is optimized in Ansys RMXprt by using Taguchi’s design of experiment (DoE) method in order to meet the vehicle requirements. The BH curves are created for steel sheet (M19_24G), amorphous (2605SA1) and soft magnetic composite (SMC) (Somaloy 1000 3P) in Ansys Maxwell Environment, which are widely used as core materials in the literature. Then, the motor models are analyzed by the finite element method in Ansys Maxwell, and the core materials that can meet the minimum requirements in terms of magnetic flux density and saturation are verified. Finally, the dynamic vehicle model is set up in Ansys Simplorer in order to evaluate the motor performances. For that purpose, a reference speed profile is created by using the measured speed from the Gothenburg carting ring, and the battery consumption characteristic and reference speed tracking performance of the motor models with different cores are evaluated in the driving cycle.
Plasmons compressing the light – a jewel in the treasure chest of Mark Stockman’s legacy
Authors: Khurgin Jacob B. 
Published: July 2021

Abstract
Among all the contributions made by Mark Stockman, his work on concentrating the light energy to unprecedented densities is one of the most remarkable achievements. Here it is briefly reviewed and a relatively novel, intuitive, and physically transparent interpretation of nanofocusing using the effective volume of hybrid coupled modes formalism is presented and the role of Landau damping as the main limiting factor is highlighted.
Jenseits von Identität
Authors: Schumann Frank 
Published: July 2021

Zusammenfassung
Das Aufkommen des Rechtspopulismus führte in den letzten Jahren zu einer (Wieder-)Beschäftigung mit dem Konzept der Gemeinschaft. Diese zeichnet sich jedoch dadurch aus, dass sie Gemeinschaft individualisierend als eine Orientierung am Lokalen oder an kollektiven Identitäten fasst. Da die rechtspopulistischen Gemeinschaftsbezüge aber in einem politischen Kontext getätigt werden, umfassen sie nicht nur individuelle Zugehörigkeit oder Orientierungen, sondern eine Vorstellung des sozialen Gemeinwesens. Der Beitrag schlägt ausgehend von Ferdinand Tönnies und Max Weber einen Gemeinschaftsbegriff vor, der diese Facette systematisch berücksichtigt und Gemeinschaft als eine affektiv aufgeladene Deutung von sozialer Ordnung versteht. Welche Perspektiven der Forschung sich aus diesem Begriff ergeben, wird abschließend am Beispiel der geschichtswissenschaftlichen Debatte um Volksgemeinschaft rekonstruiert.
Reflexion von Sachunterricht durch Erst- und Zweitsemesterstudierende
Authors: Rychner Marianne , Schumann Svantje 
Published: July 2021

ZusammenfassungDie Erforschung professioneller Reflexion gilt als schwierig, während die Hochschulausbildung den Anspruch hat, dass Studierende im Verlauf des Studiums eine höhere Stufe der Reflexivität erreichen.Vor diesem Hintergrund wurde Studierenden einer pädagogischen Hochschule eine Unterrichtseingangssequenz vorgelegt; sie sollten das Geschehen in Kleingruppen reflektieren. Die dabei erzeugten Audioaufnahmen wurden analysiert im Hinblick auf die Frage, welche Formen von Reflexivität sich feststellen lassen. Als Ergebnis ließen sich typologisch klar voneinander abgrenzbare Fälle bereits bei erst- und zweitsemestrigen Studierenden ausweisen. Bei allen deutet sich an, dass Studierende es tendenziell ablehnen, pauschal zu urteilen. Ebenfalls typenübergreifend zu beobachten ist ein hohes Maß an Unsicherheit bezüglich der Frage, wie im konkreten Fall zu reagieren ist. Zugleich wird oft schnell von „richtigem“ oder „falschem“ Verhalten ausgegangen, ohne dass strukturelle Bedingungen in diese Beurteilungen mit einbezogen werden. Offen bleibt die Frage, ob und wie die Reflexivität sich im weiteren Verlauf des Studiums ausdifferenziert.
Reflections of Wilhelm Wundt’s Lectures in Vytautas Civinskis’ Diary: Application of Introspection to Comprehend Emotional Phenomena
Authors: Almonaitienė Junona S. , Girininkaitė Veronika 
Published: July 2021

The beginning of the 20th century is well known as a time of formation of psychology as an independent scientific discipline. One of the students interested in it was Vytautas Civinskis (1887–1910), who attended Wilhelm Wundt’s Psychology lectures during his agriculture (Landwirtschaft) studies at Leipzig University, in 1904–1906, and led a Diary at that time. This article presents analysis of fragments of Civinskis’ Diary related to psychology. Several artefacts found in it, preliminarily interpreted as the diarist’s introspection data related to emotional phenomena, are being discussed. The analysis verified the initial assumption and helped to understand the essence of the diarist’s research design. It was also deduced that Civinskis proceeded with the introspection at least two years after Wundt’s Psychology lectures, trying to elaborate the method. It was found that some other researchers, e. g. Flügel (1925), Viliūnas, Pacevičius and Stončius (1997) applied similar methods much later. The Civinskis’ research on his own emotional states was amateurish but performed consistently and diligently. It can be considered as one of the earliest cases of empirical research in the history of Lithuanian psychology and adds to our still incomplete knowledge of the latter.
New genera of melikertine bees with facial modifications in Baltic amber (Hymenoptera: Apidae)
Authors: Engel Michael S. , Davis Steven R. 
Published: July 2021

The tribe Melikertini (Apinae: Corbiculata) is an extinct group of highly eusocial bees presently known only from early to late Eocene deposits of Eurasia. Among melikertine diversity are a suite of species peculiar for their rather dramatic morphological specializations, at least in relation to modern corbiculate Apinae. Here we document two new species of Melikertini and utilize standard X-ray as well as propagation phase contrast synchrotron computed microtomography to further explore these and previously known species, revealing finer details not previously observable from melikertines. Accordingly, some species placed in the genera Melikertes Engel and Succinapis Engel are reëvaluated. Three new genera are characterized, as well as some further facial modifications not previously known for the tribe. New taxa and taxonomic changes presented are: Aethemelikertes emunctorii Engel, new genus and species; Haidomelikertes uraeus Engel, new genus and species; H. proboscidea (Engel), new combination; Amelikertotes Engel, new genus; Amelikertotes clypeata (Engel), new combination. Additionally, new records and taxonomic notes on other Baltic amber and Eocene bees are appended, with the following nomenclatural changes established: Palaeomacropis Michez & Nel is recognized as a megachiline rather than a melittid, and is transferred to Megachilinae where it is a new junior synonym of Ctenoplectrella Cockerell (new synonymy); Ctenoplectrella eocenica (Michez & Nel), new combination; a key is provided to species of Ctenoplectrella; Thaumastobombina Engel, new subtribe in Electrapini; Thnetobombus Engel, new subgenus in Protobombus Cockerell; Mesomelissa Engel, new subgenus in Electrapis Cockerell; Electrapis (Euglossopteryx) biesmeijeri (De Meulemeester et al.), new combination. A list of Eocene bees is appended.
Simulation of a Stand-alone Hybrid PV-Diesel Systems for Critical Island Loads
Authors: Alah G. Ramadan Abdelnasser A. Nafeh, Omar M. Abdel-halim, 
Published: July 2021

Micro-grid is an effective solution to increase the power distribution reliability by using renewable energy sources or hybrid with a diesel generator. In this research, a hybrid energy system using a solar power system designed for extraction of 100 kW at peak power, at standard condition 1000 W/m2 and 25 ˚C with a diesel generator designed 500 KVA at peak power is simulated for a standalone microgrid utilities. For extraction maximum power, the duty ratio of a converter is adjusting based on the specific value of maximum power point (MPP) voltage of the PV array. Thus, the DC voltage of the inverter side is kept constant to meet the grid specifications, e.g. 400 V and 50 Hz. The PV array is modelling by nonlinear equations which describe the effect of real irradiance levels for the Western Desert in Egypt on DC voltage. The solar power system is designed in an actual location with a diesel generator, supplying a three-phase load of about 300 KW contain 60 KW of critical police loads and 240 KW of normal police loads. Due to the fluctuations in solar irradiance, load sharing between the PV system and the diesel generator is controlled. The load sharing is verified numerically by the Newton-Raphson method for a three-bus ring distribution system. Numerical and simulation results show the capability of the designed PV system to share the load with the diesel generator over the year.The proposed system helps to achieve security and stability, especially in border and remote places due to the high cost of connecting these places with the public network, as well as the difficulty of maintaining diesel generators and delivering fuel. Due to the sunny climate of the Western Desert in Egypt, so the hybrid energy system with any renewable sources helping in increase generation capacity for any future extension loads power requirements without increase the storage units of diesel generator, reduce maintenance of diesel generator, increase the lifetime of diesel generator, helping to keep the environment clean, maintains reliable electricity to the consumer and can be portable from place to another without any additional cost.
The proposed system helps to achieve security and stability, especially in border and remote places due to the high cost of connecting these places with the public network, as well as the difficulty of maintaining diesel generators and delivering fuel. Due to the sunny climate of the Western Desert in Egypt, so the hybrid energy system with any renewable sources helping in increase generation capacity for any future extension loads power requirements without increase the storage units of diesel generator, reduce maintenance of diesel generator, increase the lifetime of diesel generator, helping to keep the environment clean, maintains reliable electricity to the consumer and can be portable from place to another without any additional cost.
A Testable Worldwide Earthquake Faulting Mechanism Model
Authors: Taroni Matteo , Selva Jacopo 
Published: July 2021

Abstract
In this article, we present a simple model to forecast global focal mechanisms. This model is based on a simple discrete counting distribution of the global centroid moment tensor catalog, and it also includes, using a Bayesian scheme, the a priori information from the Anderson theory of faulting. Our model is tested in hindcasting mode against independent data of global large earthquakes with Ms≥7. We obtained statistically significant good agreement between model and data using consistency test, demonstrating that this simple model can satisfactorily forecast focal mechanisms at the global scale. The defined testing procedure can be used to test the model in prospective mode against future events. These forecasts may inform short- to long-term hazard quantifications that require a finite source characterization, as well as real-time source inversion algorithms.
Shaking in the Southeastern United States: Examining Earthquakes and Blasts in the Central Georgia–South Carolina Seismic Region
Authors: Marzen Rachel E. , Gaherty James B. , Shillington Donna J. , Kim Won-Young 
Published: July 2021

AbstractSeismicity in the southeastern United States is relatively poorly characterized and thus not well understood. Structures and heterogeneities from multiple stages of Appalachian orogenesis, continental rifting, and magmatism as well as rivers and reservoirs may be influencing seismic activity in the region, but previous constraints are limited. The addition of seismic stations from the U.S. Transportable Array and the Southeastern Suture of the Appalachian Margin Experiment Array in 2012–2014 provide an opportunity to characterize seismicity in the central Georgia–South Carolina region. We develop a seismic catalog of &gt;1000 events from March 2012 to May 2014 within or near the instrument array boundaries 30.1°–35.2°N, 80.9°– 85.7°W. Many of the events detected were industrial blasts, so multiple strategies were tested to discriminate between earthquakes and blasts based on event locations, timing, and spectral amplitude of the P and S arrivals. Based on this analysis, ∼10% of the events in the catalog were classified as earthquakes. Most earthquakes southeast of the eastern Tennessee seismic zone are located in the Carolina terrane, particularly where the Carolina terrane intersects major rivers or reservoirs. One prominent region of seismicity along the Savannah River near Thurmond Lake corresponds with an ∼4.5  m rise in water levels in 2013. A temporal cluster of earthquakes in April 2013 was followed by increased levels of ambient seismicity preceding the nearby Mw 4.1 earthquake in 2014. Focal mechanisms based on first-motion polarities indicate strike-slip to oblique-thrust motion on structures trending approximately north–south or east–west, and a maximum horizontal stress orientation consistent with the regional trend of ∼N60°E, implying that seismicity may reactivate more optimally oriented structures in the Carolina terrane that are oblique to the trend of the Appalachians. Seismicity in central Georgia appears to be controlled by a complex interaction between preexisting crustal structure and hydrologic variability.
Rupture Kinematics of the 11 January 2021 Mw 6.7 Hovsgol, Mongolia, Earthquake and Implications in the Western Baikal Rift Zone
Authors: Liu Gang , Qiao Xuejun , Yu Pengfei , Zhou Yu , Zhao Bin , Xiong Wei 
Published: July 2021

AbstractThe Mongolia plateau is the farthest intracontinental region of the India–Eurasia collision and is a transition zone between north–south convergence to the south in the Tien Shan and northwest–southeast extension to the north in the Baikal rift. Mongolia has experienced four M 8 earthquakes since 1905, but due to limited observations, the mechanism of these strong earthquakes and regional tectonics are poorly understood. The 11 January 2021 Mw 6.7 Hovsgol, Mongolia, earthquake is the largest event that has occurred in the Hovsgol graben, which is noted for being the northernmost convergence region of the India–Eurasia collision and the youngest extension region of the Baikal rift. In this article, the coseismic displacements are retrieved by space geodesy for the first time in this region, providing good constraints for the deformation pattern. We use a finite-fault inversion of InSAR and teleseismic data, and a backprojection analysis to reveal the rupture kinematics of this event. The geometry of the Hovsgol fault is determined as east-dipping with a dip of 45°. The rupture process is characterized by a northwestward propagation with a moderate average rupture velocity of ∼2.0  km/s and a complex slip pattern composed of two major slip patches with dimensions of 40  km×20  km. The oblique slip, illustrated by predominate extension and significant dextral striking, confirms the right-lateral-striking faulting in the Hovsgol rift, which indicates that the eastwardly north–south convergence across the southwest segment of the Baikal rift has decreased.
Identification of and Favorable Conditions for a New Long-Offset Seismic Phase from Offshore–Onshore Seismic Surveys
Authors: Zhang Changrong , Xia Shaohong , Cao Jinghe , Wan Kuiyuan , Xiong Cheng 
Published: July 2021

Abstract
Offshore–onshore seismic survey is one of the main methods to study crustal structures in offshore–onshore transitional zones. At present, the seismic waves commonly used in imaging are the crustal refraction (Pg), the crustal reflection from the Moho (PmP), and the upper-mantle refraction (Pn) waves. The propagation distances of Pg and PmP are commonly less than 210 km, and Pn propagates with an apparent velocity of ∼8  km/s. In 2015, two offshore–onshore wide-angle seismic lines with a length of ∼350  km were acquired in the Pearl River Estuary. In addition to Pg, PmP, and Pn, a new seismic phase was observed, which has a long propagation distance (offset of ∼170–290  km), low apparent velocity (∼5.85  km/s), and low frequency (∼4–7  Hz). Similar seismic phases have been widely reported in previous offshore–onshore and reservoir seismic surveys, but the understanding of these phases is still limited. Herein, we used both raytracing and waveform modeling methods to identify the new seismic phase as the secondary Pg phase, which reflects from the surface (named Pg2Pg). We also discuss favorable conditions for Pg2Pg, including (1) a thin sedimentary layer with low velocity at the surface in which the reflection of Pg occurs, which can reduce the incidence angles and hence increase the energy of the reflected waves; (2) a sedimentary basement dipping toward the sea at the positions of the air gun shots, which focuses seismic waves; (3) relatively smooth interfaces of the medium, which can reduce the scattering of Pg2Pg; and (4) air guns that can excite low-frequency signals, which can reduce the attenuation of seismic waves. Checkerboard tests and practical applications show that Pg2Pg can significantly improve upper-crustal resolution, especially for onshore areas. Our research promotes the data mining of offshore–onshore seismic surveys, which is important for obtaining more detailed crustal structures.
Las mujeres ya no son lo que eran. Nuevos modelos femeninos en la narrativa audiovisual=Women are no longer what they used to be. New feminine models in the audiovisual narrative
Authors: Gallego Ayala Juana 
Published: July 2021

ResumenEste texto analiza los modelos femeninos que se están imponiendo en la nueva narrativa audiovisual. Las mujeres han ocupado casi siempre un lugar secundario en los relatos de ficción, y aun siendo protagonistas han sido representadas mayoritariamente como personas que anteponían los intereses de los demás a los suyos propios en todos los órdenes de la vida. Los nuevos modelos que proponen las series de ficción presentan mujeres que actúan y viven para sí, que intentan encontrar acomodo en una sociedad en la que todavía perviven los estereotipos de género que estas nuevas heroínas tratan de combatir. La renovación de los clásicos modelos femeninos es de vital importancia para proporcionar nuevos referentes a las jóvenes generaciones. AbstractThis text focuses on the female models that are being imposed in the new audiovisual narrative. Women has occupied mostly a secondary place in the fiction stories, and even as protagonists, they were depicted as persons who put their personals interests in a second place, either in the workplace, in sentimental or in family life. Women in the new fictional series are persons who act and want to live one’s own life. They give priority to their jobs in their lives and they usually maintain anticonventional sentimental relationships. These women try to maintain equality relationships either in their professional and in the family life. The renewal of the classic feminine models is of utmost importance to promote new referents to new generations.
La representación femenina en el videoclip: análisis de la música actual en español de los grandes circuitos comerciales=The representation of women in music videos: analysis of the present-day music in Spanish disseminated via global music-streaming services
Authors: Sánchez-Vizcaíno María-Carmen 
Published: July 2021

ResumenNuestro imaginario colectivo continúa mostrando un sesgo inconsciente determinado con respecto a la representación de la mujer en la sociedad. En parte, debido al contenido audiovisual percibido de forma recurrente, como es el caso de los videoclips. Este artículo analiza la proyección de la mujer en videoclips en español emitidos en 2019 en plataformas digitales de difusión musical. Se han extraído los 47 de mayor frecuencia y mediante el programa de análisis cualitativo Atlas.ti. se han estudiado sus recursos narrativos y multimodales. Los resultados evidencian que todavía abundan los videoclips donde se difunden temáticas estereotipadas sobre el género femenino como la reducción de la figura de la mujer, su inferioridad con respecto al hombre o el elogio a la belleza y a la juventud.AbstractOur collective imagination still includes a particular unconscious bias with regard to the representation of women in society, in part due to audio-visual content perceived on a recurring basis, such as music videos. This article analyses the representation of women in music videos in Spanish, disseminated via global music-streaming services in 2019. The 47 most frequent have been extracted and through the qualitative analysis program Atlas.ti their narrative and multimodal resources have been studied. The results show that most music videos still display a stereotyped portrayal of women, such as woman's objectification and her relationship to man, or praise of beauty and youth.
Mujeres guionistas y estereotipos de género en el audiovisual español actual=Women scriptwriters and gender stereotypes in current Spanish audiovisuals
Authors: Torres-Martín José Luis , Castro-Martínez Andrea , Díaz-Morilla Pablo 
Published: July 2021

ResumenA través de entrevistas a 16 guionistas y el análisis documental de 7 informes sobre el sector, este trabajo aborda la situación de las mujeres guionistas en el mercado audiovisual español y las dificultades a las que se enfrentan, así como su influencia en la evolución de la construcción de los personajes femeninos. Las mujeres continúan siendo minoría en la ideación y creación audiovisual, así como en puestos de responsabilidad. Esto se traduce en una excesiva homogeneización de los personajes femeninos y en el empleo de estereotipos de género. Las guionistas se enfrentan a barreras derivadas de ideas preconcebidas sobre las mujeres, como su falta de preparación o capacidad, y a otras que dificultan la maternidad y la conciliación. AbstractThrough interviews with 16 scriptwriters and the documentary analysis of 7 reports on the sector, this work addresses the situation of women scriptwriters in the Spanish audiovisual market and the difficulties they face, as well as their influence on the evolution of the construction of female characters. Women continue to be a minority in audiovisual ideation and creation, as well as in positions of responsibility. This results in an excessive homogenisation of female characters and the use of gender stereotypes. Women scriptwriters face barriers stemming from preconceived ideas about women, such as their lack of qualifications or ability, and others that make motherhood and work-life balance difficult.
Griselda Pollock. Visión y diferencia. Feminismo, feminidad e historias del arte. Ciudad de Bs. As., Argentina: Fiordo, 2013.
Authors: Godoy María Julia , Carvalho Isabel Cristina 
Published: July 2021

Griselda Pollock. Visión y diferencia. Feminismo, feminidad e historias del arte. Ciudad de Bs. As., Argentina: Fiordo, 2013. ResumenEl libro "Visión y diferencia. Feminismo, feminidad e historias del arte", de Griselda Pollock, fue publicado por primera vez en inglés por la editorial Routledge en 1988, y por primera vez en español por la editorial Fiordo en 2013. Siendo esta última nuestro objeto de análisis para esta investigación.