bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Dynamic Mathematics Software Geogebra on Student’ Achievement: The Case of Differential Equations
Authors: Latifi Mohamed , Hattaf Khalid , Achtaich Naceur 
Published: November 2021

In mathematics, a differential equation uses important mathematical concepts like function, derivative, integral, etc. Geogebra is a dynamic mathematical software uniting geometry, algebra and differential calculus. There are two objectives in this study. The first objective is to examine the impact of the use of Geogebra on the students’ understanding of differential equations. The second objective is to see how the students interact with a Geogebra environment according to their styles of mathematical thinking. The subjects of this research were 35 and 32 students for the experimental and control group, respectively of 12th grade at a government school, west of Morocco, in the academic year 2020-2021. These participants have different mathematical thinking styles (MTS): visual, analytic, and integrated. The results show that teaching differential equations with GeoGebra is more efficient in terms of conceptual knowledge than the conventional method. In procedural knowledge, students in both groups were in similar achievement levels. We can conclude that Geogebra was more beneficial for students with integrated thinking, especially for conceptual knowledge.

Received: 19 July 2021 / Accepted: 3 October 2021 / Published: 5 November 2021
Enhancing Food Security Through Systematic African Women Empowerment in South Africa
Authors: Masuku Mfundo Mandla , Garutsa Tendayi 
Published: November 2021

This paper critically argues how the gender and development approach influences food security for women. A critical literature review analysis was conducted using peer-reviewed publications and grey literature from relevant organisations. Sources from 1993 to 2020 were manually selected from Sabinet and Google Scholar using a purposive and snowball approach and 69 articles were analysed. Findings indicated that although the Gender and Development approach is useful in understanding the issue of food security within the South African context, a post-development feminist approach can guide policy frameworks that recognise differences in women when addressing food insecurity, to enhance women empowerment. This paper recommends that gender and food security issues ought to be conceptualised and understood in a multidimensional sense, using various determinants which include consumption, income, poverty and human development.

Received: 21 September 2021 / Accepted: 25 October 2021 / Published: 5 November 2021
The Incidence of Cerebral Edema in Pediatric Diabetic Ketoacidosis
Authors: Pant Dikshya 
Published: November 2021

Introduction: Cerebral edema is an uncommon but devastating consequence of diabetic ketoacidosis occurring more in children than adults. Younger children and those with newly diagnosed diabetes are at highest risk. The objective of this study is to determine the frequency of cerebral edema in pediatric diabetic ketoacidosis at Children’s Hospital, Lahore in children with type 1 diabetes mellitus.
Methods: This descriptive study was carried out in the pediatric intensive care units and medical wards of the Children’s Hospital and the institute of Child Health, Lahore from 2nd Feb 2016 to 2nd Aug 2016. A total of 150 patients fulfilling the inclusion criteria were enrolled. After taking consent from parents, demographic information including name, age, sex, address, and date of admission were recorded. Fundoscopic findings were recorded before initiating diabetic ketoacidosis treatment and neurological examination was conducted at presentation. Cerebral edema was labeled as per operational definition and sampling was done as per hospital DKA management protocol.
Results: In our study, out of 150 cases, 58.67%(n=88) were between 1-7 years of age while 41.33%(n=62) were between 8-14 years of age, mean + sd was calculated as 6.92+3.12 years, 51.33%(n=77) were male and 48.67%(n=73) were females. Frequency of cerebral edema in pediatric diabetic ketoacidosis at children’s hospital Lahore in the child with type 1 diabetes mellitus was calculated in 18.67%(n=28) while 81.33%(n=122) had no findings of cerebral edema.
Conclusions: Frequency of cerebral edema is high in pediatric diabetic ketoacidosis at Children’s Hospital Lahore in the child with type 1 diabetes mellitus.
ITEMS FROM THE OGUZ KURGAN IN THE VARVARA AND BOHDAN KHANENKO COLLECTION (BASED ON THE MATERIALS OF THE MUSEUM OF HISTORICAL TREASURES OF UKRAINE)
Authors: Velychko Ye. O. , Polidovych Yu. B. 
Published: November 2021

Twenty six precious items from the Varvara and Bohdan Khanenko collection discovered in the Oguz kurgan (Lower Dnieper region) are analyzed in the paper. These items were found by peasants in the fall of 1901 in the destroyed part of the kurgan and ended up to the hands of antiquities traders. Now these items are kept in the Museum of Historical Treasures of Ukraine.
The study of objects made us possible to conclude that only decorative items for horse equipment were of unconditional origin from Oguz kurgan (fig. 1—2). These items complement the finds that are kept in the State Hermitage (Sankt-Peterburg, Russia) and also come from the Oguz kurgan. Together they are four completes sets of decoration of horse bridle of so-called Chertomlyk type. Some round plaques (fig. 1: 4—5) were used for saddles decoration. The total number of such plaques indicates that 9 or 10 saddles were found. This determines the total number of horses buried in the Central tomb of the Oguz kurgan. The cone (fig. 2) served as a decoration for the horse’s neck. Five more such items are kept in the State Hermitage. They were found only in the Oguz kurgan.
The significant part of other items (upholstery of a wooden bowl, jewelry, appliquйs (fig. 3) were probably found by peasants in other steppe kurgans which were robbed by diggers at the beginning of the 20th century. Two small appliquйs (fig. 3: 5—6) probably come from the necropolises of ancient Greek colonies, possibly Chersonesos.
Unfortunately, almost all items from old or modern private collections lose the historical context in which they were found. Probably, some items (fig. 1: 6—9; 3: 3—4, 7—8) were «restored» by antiquities dealers and, as a result, lost their authentic appearance.
D. T. BEREZOVETS AND NETAILIVKA BURIAL GROUND OF SALTIV CULTURE: DISCOVERY, MODERN RESEARCHES, RESULTS
Authors: Aksonov V. S. 
Published: November 2021

Peculiarity of the Netailivka burial ground, noted by its discoverer D. T. Berezovets, is the total predominance of burials where the bones of the buried people are completely absent. At the same time the burials often contain grave goods located in the places when the bodies of the deceased should have been lied. This fact allowed D. T. Berezovets to suppose that initially the burial was performed on the surface of the earth where the body was exposed to natural factors and only after that it was re-buried into a pit. However, the researches of recent years show that burials were made in full accordance with the funeral rite of the Proto-Bulgarian population of the Saltiv culture. The absence of human remains in most of the burial pits should be associated with the specific hydrological conditions prevailing at the site of the necropolis in the post-Saltiv period. In a number of burials of the burial ground the later activity in the burial pits, associated with ritual actions performed in ancient times, were recorded. These actions testify the existence of the so-called «final ceremony» among the Netailivka people, the holding of which meant the end of mourning for the deceased person and made the death of a relative complete and final for the living.
The study of the chronological markers of the site made it possible to attribute the time of the burial ground to the stage of the formation of the Saltiv culture in the region and to date the earliest burials of the necropolis to the 740—790 AD. The set of decorations and brooches from early burials shows that the original area of the migration of this population was the North-Eastern Caucasus (the territory of modern Chechnya and Dagestan). The location of the horse remains in the burials of the horsemen indicates the mixed Turkic-Ugric character of the population, which was part of the tribal union of the «Bulgars». The date of the burial ground and the probable area of residence of the population which made it, allows us to identify the «Netailivka» people with the representatives of the nomadic Bulgar union known from literary sources as «Sabirs / Savirs»
Letter chunk frequency does not explain morphological masked priming
Authors: De Rosa Mara , Crepaldi Davide 
Published: November 2021

AbstractResearch on visual word identification has extensively investigated the role of morphemes, recurrent letter chunks that convey a fairly regular meaning (e.g.,lead-er-ship). Masked priming studies highlighted morpheme identification in complex (e.g.,sing-er) and pseudo-complex (corn-er) words, as well as in nonwords (e.g.,basket-y). The present study investigated whether such sensitivity to morphemes could be rooted in the visual system sensitivity to statistics of letter (co)occurrence. To this aim, we assessed masked priming as induced by nonword primes obtained by combining a stem (e.g.,bulb) with (i) naturally frequent, derivational suffixes (e.g.,-ment), (ii) non-morphological, equally frequent word-endings (e.g.,-idge), and (iii) non-morphological, infrequent word-endings (e.g.,-kle). In two additional tasks, we collected interpretability and word-likeness measures for morphologically-structured nonwords, to assess whether priming is modulated by such factors. Results indicate that masked priming is not affected by either the frequency or the morphological status of word-endings, a pattern that was replicated in a second experiment including also lexical primes. Our findings are in line with models of early visual processing based on automatic stem/word extraction, and rule out letter chunk frequency as a main player in the early stages of visual word identification. Nonword interpretability and word-likeness do not affect this pattern.
On -permutable subgroups in finite groups
Authors: Hu B. , Huang J. , Adarchenko N. M. 
Published: November 2021

UDC 512.542
Let be some partition of the set of all primes and let be a nonempty subset of the set A set of subgroups of a finite group is said to be a \emph{complete Hall -set} of if every member of is a Hall -subgroup of for some and contains exactly one Hall -subgroup of for every such that A subgroup of is called (i) {-<em>permutable</em>} if for and ; (ii) {-<em>permutable</em> in } if is -permutable for some complete Hall -set of
We study the influence of -permutable subgroups on the structure of In particular, we prove that if and where and are -permutable -separable (respectively, -closed) subgroups of then is also -separable (respectively, -closed). Some known results are generalized.
4–8 GHz Spectrotemporal Emission from the Galactic Center Magnetar PSR J1745–2900
Authors: Suresh Akshay , Cordes James M. , Chatterjee Shami , Gajjar Vishal , Perez Karen I. , Siemion Andrew P. V. , Price Danny C. 
Published: November 2021

Abstract
Radio magnetars are exotic sources noted for their diverse spectrotemporal phenomenology and pulse profile variations over weeks to months. Unusual for radio magnetars, the Galactic Center (GC) magnetar PSR J1745−2900 has been continually active since its discovery in 2013. We monitored the GC magnetar at 4–8 GHz for 6 hr in 2019 August–September using the Robert C. Byrd Green Bank Telescope. During our observations, the GC magnetar emitted a flat fluence spectrum over 5–8 GHz to within 2σ
uncertainty. From our data, we estimate a 6.4 GHz period-averaged flux density,

S

¯

6.4

≈
(
240
±
5
)

μJy. Tracking the temporal evolution of

S

¯

6.4

, we infer a gradual weakening of GC magnetar activity during 2016–2019 relative to that between 2013 and 2015.5. Typical single pulses detected in our study reveal marginally resolved subpulses with opposing spectral indices, a feature characteristic of radio magnetars but unseen in rotation-powered pulsars. However, unlike in fast radio bursts, these subpulses exhibit no perceptible radio frequency drifts. Throughout our observing span, ≃5 ms scattered pulses significantly jitter within two stable emission components of widths 220 ms and 140 ms, respectively, in the average pulse profile.
Detectable Abundance of Cyanoacetylene (HC3N) Predicted on Reduced Nitrogen-rich Super-Earth Atmospheres
Authors: Rimmer Paul B. , Majumdar Liton , Priyadarshi Akshay , Wright Sam , Yurchenko S. N. 
Published: November 2021

Abstract
We predict that cyanoacetylene (HC3N) is produced photochemically in the atmosphere of GJ 1132 b in abundances detectable by the James Webb Space Telescope (JWST), assuming that the atmosphere is hydrogen dominated and rich in molecular nitrogen (N2), methane (CH4), and hydrogen cyanide (HCN), as described by Swain et al. First, we construct line lists and cross sections for HC3N. Then we apply these cross sections and the model atmosphere of Swain et al. to a radiative transfer model in order to simulate the transmission spectrum of GJ 1132 b as it would be seen by JWST, accounting for the uncertainty in the retrieved abundances. We predict that cyanoacetylene features at various wavelengths, with a clear lone feature at 4.5 μm, observable by JWST after one transit. This feature persists within the 1σ uncertainty of the retrieved abundances of HCN and CH4. The signal is detectable for stratospheric temperatures ≲600 K and moderate stratospheric mixing (106 cm2 s−1 ≲ K

zz
≲ 108 cm2 s−1). Our results also indicate that HC3N is an important source of opacity that future retrieval models should consider.
CI Tau: A Controlled Experiment in Disk–Planet Interaction
Authors: Muley Dhruv , Dong Ruobing 
Published: November 2021

Abstract
CI Tau is a young (∼2 Myr) T Tauri system with a substantial near-infrared (NIR) excess in its spectral energy distribution (SED), indicating that the protoplanetary disk extends very close to its star. This is seemingly at odds with the radial-velocity discovery of CI Tau b, a ∼12 M

J
planet at ∼0.1 au, which would be expected to carve a wide, deep cavity in the innermost disk. To investigate this apparent contradiction, we run 2D hydrodynamics simulations to study the effect of the planet on the disk, then post-process the results with radiative transfer to obtain an SED. We find that at ∼0.1 au, even such a massive companion has little impact on the NIR excess, a result that holds regardless of planetary eccentricity and dust size distribution. Conversely, the observed full-disk signature in CI Tau’s SED is consistent with the existence of the hot super-Jupiter CI Tau b. As our simulations uncover, clear transition-disk signatures in SEDs are more likely to be signposts of nascent “warm” Jupiters, located at around 1 au in the future habitable zones of their host stars.
SCOLINTER : un corpus trilingue. L’exemple de la segmentation en mots
Authors: Ponton Claude , Gutiérrez-Cáceres Rafaela , Teruggi Lilia , Farina Elisa , Brissaud Catherine , Wolfarth Claire 
Published: November 2021

Cet article décrit la conception d’un corpus d’écrits scolaires longitudinal et trilingue (français, espagnol, italien). L’objectif est d’établir une comparaison de l’évolution des compétences en littéracie entre ces trois langues à l’école primaire. Pour le moment, seul le CP (grade 1) a été entièrement traité mais les mêmes élèves seront suivis jusqu’au CM2 (grade 5). L’exploitation de ce corpus propose une approche reposant sur des comparaisons entre la version des textes produits par les élèves et une version dite ‹normalisée›. Cette approche permet d’assister la description linguistique des réussites et des difficultés dans l’apprentissage de l’écrit. En particulier, l’article s’intéressera à la segmentation entre les mots, en mettant en évidence à la fois la fréquence du phénomène et les catégories de mots dans lesquelles il se produit. L’analyse comparative révèle la présence de caractéristiques similaires dans le corpus trilingue.
Cartographie des usages et des erreurs orthographiques sur les verbes dans des récits écrits par des élèves de 6 à 15 ans
Authors: Lavieu-Gwozdz Belinda , Vinel Élise , Goossens Vannina , Brissaud Catherine 
Published: November 2021

Cette étude cherche à donner une vue panoramique des performances orthographiques des élèves en production de texte dans le domaine de la morphographie du verbe, du CP à la classe de 3 e du collège, et à comprendre si la disponibilité des marques verbales dans des tests standardisés se retrouve en situation de production de texte. Nous nous intéressons plus particulièrement aux tiroirs verbaux les plus utilisés par les élèves dans des textes narratifs : présent, imparfait, passé simple et infinitif. Nous décrivons les formes produites par les élèves en distinguant celles qui portent sur les bases verbales de celles qui portent sur les désinences. Nous cherchons à identifier d’éventuels phénomènes récurrents mais aussi des spécificités qui pourraient caractériser certains niveaux scolaires. Des pistes didactiques sont enfin suggérées.
Clivage droite/gauche et V e République : une longue tournée d’adieux ?
Authors: Rozenberg Olivier 
Published: November 2021

En contradiction avec l’aspiration unanimiste de son fondateur, la V e République, à travers ses règles constitutionnelles et électorales, a favorisé l’exacerbation du clivage droite/gauche. Cette partition s’est étendue au-delà la vie politique (qui ne s’est jamais résumée à cette seule alternative) et fut un vecteur puissant de politisation. Progressivement cependant, le clivage fut victime de la défiance généralisée vis-à-vis des dirigeants politiques. La présidentielle de 2017 a signifié que son dépassement était possible dans le cadre institutionnel spécifique de la V e . Toutefois, les notions de droite et de gauche n’ont pas disparu avec l’élection d’un président « et de droite et de gauche ».
La « pulvérisation démocratique », ou les clivages façon puzzle
Authors: Thiers Éric 
Published: November 2021

La « pulvérisation démocratique » est une révolution anthropologique. Elle est marquée par l’atomisation des acteurs et l’impossibilité d’organiser des débats d’idées argumentés et de construire de la délibération collective. Sa forme en est la violence qui caractérise désormais le jeu politique. Sa conséquence en est la destruction des formes classiques du jeu démocratique fondées sur celui des clivages. L’affaiblissement de ces structures objectives et profondes, sous le coup de cette pulvérisation démocratique, ouvre la voie à une personnalisation de la politique.
Nuevos datos de Ocys tachysoides (Antoine, 1933) en la península ibérica y discusión sobre su distinción de Ocys harpaloides (Audinet-Serville, 1821) (Coleoptera, Carabidae)
Authors: Muñoz-Santiago José , Ortuño Vicente M. 
Published: November 2021

Ocys tachysoides (Antoine, 1933) y Ocys harpaloides (Audinet-Serville, 1821) son dos especies próximas cuya distinción era difícil antes de la publicación de ciertos trabajos recientes. Mientras que O. harpaloides es bien conocido en la península ibérica, los datos disponibles sobre O. tachysoides son escasos (tan solo cuatro citas han sido publicadas). Se planteó la hipótesis de que O. tachysoides ha sido frecuentemente confundido con O. harpaloides en dicho territorio. Para evaluarla, se estudió material ibérico, de colección, de O. harpaloides y Ocys sp. y se (re)identificó a nivel de especie basándose en los caracteres diagnósticos actualmente conocidos (genitalia y rasgos externos). Un total de 9 ejemplares de O. tachysoides fueron localizados entre el material estudiado, lo que apoya la hipótesis inicial. Así, y junto con tres capturas recientes en España central, se aportan 11 citas nuevas de O. tachysoides. Los resultados sugieren que, al menos en las poblaciones ibéricas, la morfología de la genitalia y el patrón de la microescultura son caracteres diagnósticos consistentes. Por el contrario, ambas especies pueden presentar expresiones poco comunes de la coloración y forma de los élitros y de la forma de los ángulos posteriores del pronoto. La corología actualizada de O. tachysoides muestra que la especie está presente en el centro y noroeste de España y en el centro y norte de Portugal, en regiones templadas y húmedas que, frecuentemente, cuentan con hábitats montañosos y forestales. Son necesarios futuros estudios para esclarecer la distribución real y la autoecología de O. tachysoides.
The Autoimmune Risk R262W Variant of the Adaptor SH2B3 Improves Survival in Sepsis
Authors: Allenspach Eric J , Shubin Nicholas J , Cerosaletti Karen , Mikacenic Carmen , Gorman Jacquelyn A , MacQuivey Matthew A , Rosen Aaron B I , Timms Andrew E , Wray-Dutra Michelle N , Niino Kerri , Liggitt Denny , Wurfel Mark M , Buckner Jane H , Piliponsky Adrian M , Rawlings David J 
Published: November 2021

Abstract
The single-nucleotide polymorphism (SNP) rs3184504 is broadly associated with increased risk for multiple autoimmune and cardiovascular diseases. Although the allele is uniquely enriched in European descent, the mechanism for the widespread selective sweep is not clear. In this study, we find the rs3184504*T allele had a strong association with reduced mortality in a human sepsis cohort. The rs3184504*T allele associates with a loss-of-function amino acid change (p.R262W) in the adaptor protein SH2B3, a likely causal variant. To better understand the role of SH2B3 in sepsis, we used mouse modeling and challenged SH2B3-deficient mice with a polymicrobial cecal-ligation puncture (CLP) procedure. We found SH2B3 deficiency improved survival and morbidity with less organ damage and earlier bacterial clearance compared with control mice. The peritoneal infiltrating cells exhibited augmented phagocytosis in Sh2b3−/− mice with enriched recruitment of Ly6Chi inflammatory monocytes despite equivalent or reduced chemokine expression. Rapid cycling of monocytes and progenitors occurred uniquely in the Sh2b3−/− mice following CLP, suggesting augmented myelopoiesis. To model the hypomorphic autoimmune risk allele, we created a novel knockin mouse harboring a similar point mutation in the murine pleckstrin homology domain of SH2B3. At baseline, phenotypic changes suggested a hypomorphic allele. In the CLP model, homozygous knockin mice displayed improved mortality and morbidity compared with wild-type or heterozygous mice. Collectively, these data suggest that hypomorphic SH2B3 improves the sepsis response and that balancing selection likely contributed to the relative frequency of the autoimmune risk variant.