bluuebunny/crossref_metadata_2025 huggingface dataset:
DOT1L activity affects neural stem cell division mode and reduces differentiation and ASNS expression
Authors: Appiah Bismark , Fullio Camila L , Ossola Chiara , Bertani Ilaria , Restelli Elena , Cheffer Arquimedes , Polenghi Martina , Haffner Christiane , Garcia‐Miralles Marta , Zeis Patrice , Treppner Martin , Bovio Patrick , Schlichtholz Laura , Mas‐Sanchez Aina , Zografidou Lea , Winter Jennifer , Binder Harald , Grün Dominic , Kalebic Nereo , Taverna Elena , Vogel Tanja
Published: June 2023

Cortical neurogenesis depends on the balance between self‐renewal and differentiation of apical progenitors (APs). Here, we study the epigenetic control of AP's division mode by focusing on the enzymatic activity of the histone methyltransferase DOT1L. Combining lineage tracing with single‐cell RNA sequencing of clonally related cells, we show at the cellular level that DOT1L inhibition increases neurogenesis driven by a shift of APs from asymmetric self‐renewing to symmetric neurogenic consumptive divisions. At the molecular level, DOT1L activity prevents AP differentiation by promoting transcription of metabolic genes. Mechanistically, DOT1L inhibition reduces activity of an EZH2/PRC2 pathway, converging on increased expression of asparagine synthetase (ASNS), a microcephaly associated gene. Overexpression of ASNS in APs phenocopies DOT1L inhibition, and also increases neuronal differentiation of APs. Our data suggest that DOT1L activity/PRC2 crosstalk controls AP lineage progression by regulating asparagine metabolism.
The relationship between personality traits of education students and the degree of their Internet addiction
Authors:   South Ural State Humanitarian Pedagogical University, Zhukova Marina Vladimirovna , Shishkina Ksenia Igorevna ,   South Ural State Humanitarian Pedagogical University, Lyamagina Angelina Nikolaevna ,   South Ural State Humanitarian Pedagogical University, Frolova Elena Vladimirovna ,   South Ural State Humanitarian Pedagogical University, Volchegorskaya Evgeniya Yuryevna ,   South Ural State Humanitarian Pedagogical University
Published: June 2023

Introduction. The article deals with the problem of identifying predictors of the formation of digital addiction in future teachers. The purpose of the article is to examine the factors underlying the formation of Internet addiction, as well as to substantiate and identify the relationship between personality traits and the degree of digital dependence among students of a pedagogical university. Materials and Methods. The study is based on the scientific works by leading experts representing various aspects of digital addiction (S. Chen, S. D. Neverkovich, K. Kawabe, O. Zahiruddin, A. K. Gudboy, etc.). The ‘Internet Addiction Scale’ developed by S. Chen was used in order to identify signs of addictive behavior in the Internet space: the desire to be constantly online, a state of frustration when unable to use the Internet, an increase in the amount of time spent online, physiological signs of deterioration of health after a long time on the Internet, difficulties with time management. In order to study the ‘light’ personal characteristics, the ‘Light Triad Scale’ by S. B. Kaufman was used, which allowed to identify positive personality qualities including Kantianism, humanism and faith in humanity. The ‘Short Questionnaire of the Dark Triad’ by D. Polhus and K. Williams was used as a diagnostic tool for studying ‘dark’ personality characteristics (narcissism, Machiavellianism and psychopathy). The study involved 47 undergraduates majoring in Education aged between 19 and 20 years. Results. The results of the study showed that the majority of students demonstrated the symptoms of pronounced Internet addiction and a tendency to excessive use of digital devices. According to the results of the empirical study, the authors revealed a correlation between the high level of digital addiction and some parameters of personal characteristics (manipulation of people, cynicism, deceitfulness, a reduced level of empathy, low social anxiety, a tendency to impulsive behavior). At the same time, a low level of digital addiction correlates to a pronounced respectful attitude towards people as individuals. Conclusions. The article concludes that the formation of Internet addiction among Education students is determined by peculiarities of virtual space and emotional and communicative factors. The study revealed a statistically significant relationship between the indicators of digital dependence and some parameters of personality traits.
Iconography: Sundanese Calligraphy as Artistic Expressions of Identity
Authors: Raden Agung Zainal Muttakin , Rustopo Rustopo , Haryono Timbul , Pratama Dendi
Published: June 2023

The Sundanese script is one of Indonesia’s traditional scripts. The existence of Sundanese script is still being preserved by cultural activists and the Sundanese script literacy community, one of which is through calligraphy in Sundanese script. This article will analyze the calligraphy of Sundanese script by Edi Dolan posted on his social media. The Sundanese calligraphy that will be discussed is in the form of puppets, animals, and humans. The Sundanese calligraphy will be reviewed through an iconographic approach. Iconography has three levels in analyzing objects, namely (1) Pre-iconography, which is to describe the formal aspects of the object; (2) Iconography, which is to interpret images, stories, and metaphors; (3) Content analysis through revealing the intricacies of the object. The results of the research elaborate on the formal aspects found in Sundanese calligraphy objects, resulting in multidimensional interpretations built on images, stories, and other multidimensional object meanings, thus showing a complete correlation of all these aspects in expressing Sundanese identity.
The Conveyance of the Japanese Atmosphere to Visitors as a Performance at Marugame Udon, Solo Paragon Lifestyle Mall
Authors: Majid Ainun , Suastiwi Suastiwi , Simatupang Gabriel Roosmargo Lono Lastoro
Published: June 2023

Marugame Udon is a Japanese fast-food restaurant chain with many branches in Indonesia. This study examines the conveyance of the Japanese atmosphere to visitors as a performance. Interior research based on performance theory has not been widely conducted. This study aims to determine the performative influence of Marugame Udon’s interior on visitors by exploring Richard Schechner’s performance aspects (action, interaction, relationship). This study uses a qualitative approach with a case study method to deeply explore data from visitors and interior elements. The data collection techniques used are observation, in-depth interviews, literature study, and company profile reading. Data analysis is done by reduction, presentation, and drawing conclusions and recommendations. The findings of this study are: (1) the “action” exploration finds that the interior display is a manifestation of Marugame Udon’s identity as a Japanese restaurant chain and its commitment to introducing Japanese culture, especially Sanuki; (2) the “interaction” exploration finds that the presence of interior elements is a mutually dependent system in displaying the atmosphere (Japanese), and visitors interact most with noren and the theater kitchen; (3) the “relationship” exploration reveals that Marugame Udon does not only act as a restaurant providing food and drinks but also as a stimulating agent that influences visitors’ perceptions and evokes their memories and desires related to Japanese culture. These three findings indicate that Marugame Udon’s interior is a static performative ecosystem that can interact and form relationships with visitors.
Training of Choreographers in Higher Education Institutions
Authors: Androshchuk Liudmyla , Medvid Tetiana , Blahova Tetiana , Zhyrov Oleksandr , Bykova Olha
Published: June 2023

The relevance of the study is determined by the active development of the pedagogical art branches, where the professional competence development of future choreographers and the development of their creative views becomes the main aspect of specialists training in higher education institution and involves the creation of the necessary conditions on the way to their creative growth and professionalism. In this regard, the purpose of the research work is to determine the features of the training of choreographers in higher education institution, their professional development in the context of educational activities, the professional competence development in the process of practical professional training, as well as to determine possible ways to overcome the professional crisis and destruction. The basis of the theoretical and methodological approach in this article is a qualitative combination of system analysis methods of choreographer training in higher education institutions with an analytical study of the professional competence development of future specialists in the art of dancing, where the use of modern approaches involves the use of innovative forms and means of learning to implement the educational concept regarding the professional development of choreographers. The article presents the results that reflect the problem of implementing the training of choreographers in higher education institution on the way to the professional qualities development of future specialists, their motivation for self-education, the development of creative abilities and creativity, as well as the necessary skills development for future productive professional activity. The obtained results of the research work are of practical value for educators of higher education institutions that train the specialists in the art of dancing, for the perspective of introducing and implementing the latest training approaches in the educational process, as well as for practical purposes for determining the development of professional qualities of future choreographers in higher education institutions.
Properties of silica porous glasses with the nanoparticle ensembles of some compounds
Authors: Lepikh Y.I. , Doycho I.K.
Published: June 2023

Properties porous silica glasses are systemized in this review. Also the methods of formation of the nanoparticles’ ensembles of the substances, which are useful for the microelectronics, are described. Porous silica glasses are perspective due to their chemically resistance, mechanical strength and development of their inner surface. Own electrical resistance is too big for the porous glasses’ specimens with standard sizes, that’s why ones use them as matrixes for luminescence type of sensors mainly. The luminescent properties’ dependence on the molecular structure of investigate substances (such as dyes and metal oxides), as well as on the nanoparticle ensemble technological formation condition is studied. It is revealed to which certain gases dyes of the specified type are sensitive and why it occurs in such manners. It is shown due to which of the described nano-size systems’ properties sensitivity is appeared. Besides, one can embed a conductive phase into the pores of glass due to features of its structure. After such treatment one can use the porous glasses as matrix for formation of resistance type sensors.
Spectroscopic, Magnetic and Morphological studies of MgFe2O4 Nanopowder
Authors: Naaz Farhana , Lahiri Preeti , Kumari Chanda , Kumar Dubey Hemant
Published: June 2023

Spinel type nano ferrite compound MgFe2O4 was synthesized through sol gel technique using metal nitrates as precursors. The phase composition, morphology and elemental analysis of magnesium ferrite (MgFe2O4) were performed by X-ray diffraction, fourier transform infrared, atomic force microscopy, energy dispersive x-ray and scanning electron microscopy, analyses.      

The sample's X-ray diffraction pattern verifies the existence of single phase material, with the size of its crystallites estimated to be 39.9 nm. Fourier transform infrared examination supported metal-oxygen vibrations corresponding to tetrahedral and octahedral sites, respectively. From scanning electron microscopy image, grain size obtained about 97.7 nm. Raman spectra of the sample shows five Raman active modes (A1g + Eg + 3F2g), which is compatible with the spinel structure. Magnetic measurement study at room temperature shows a hysteresis loop behaviour with a low saturation magnetization value, 27.192 emu g-1 and a small coercivity value. The optical band gap determined using UV-visible transmittance spectra. Additionally, X-ray photoelectron spectroscopy are used to confirm oxidation states and explore the chemical composition of the sample.
An Assyrian King in Turin
Authors: Lippolis Carlo
Published: June 2023

En el museo de Antigüedades de Turín (Italia), actualmente se exhibe de nuevo el famoso retrato de Sargón II (donado por P.E. Botta a su ciudad natal a la par que otro retrato de un cortesano) junto con unos cuantos fragmentos pequeños de otros relieves murales asirios menos conocidos de Jorsabad y Nínive. En el presente artículo exponemos algunas consideraciones sobre los dos relieves de Botta, valorando en particular los códigos de representación utilizados por los artistas en la composición de los retratos asirios reales.Palabras clave: Relieves asirios - códigos de representación visual - Khorsabad - cabeza de Sargón II AbstractAt the Museum of Antiquity in Turin (Italy) is now again exhibited the famous portrait of Sargon II (donated by P.E. Botta to his hometown, along with another portrait of a courtier) together with a few small fragments of other lesser-known Assyrian wall reliefs, from Khorsabad and Nineveh. In this paper we present some considerations on the two Botta’s reliefs, considering in particular the representational codes used by artists in the composition of the Assyrian royal portraits.Keywords: Assyrian reliefs - visual representation codes - Khorsabad - Sargon II's head
Viaje, hallazgos y fortuna de dos viajeros europeos del siglo XVII en Irán: García de Silva y Pietro del Valle
Authors: Córdoba Zoilo Joaquín María
Published: June 2023

A comienzos del siglo XVII, dos de los más interesantes viajeros europeos a Oriente, el español García de Silva y Figueroa y el italiano Pietro della Valle, coincidieron en la corte del š?h ‘Abb?s el Grande de Irán. Ambos tenían un singular interés por los monumentos y las ruinas, y los dos visitaron las más interesantes del país, como Persépolis. Amenos narradores de su experiencia, el español y el italiano fueron los primeros europeos en destacar interesantes aspectos de las antiguas culturas, realizando ambos significativas aportaciones a la Arqueología y la Historia del Oriente antiguo.Palabras clave: García de Silva y Figueroa, Pietro della Valle, Persépolis, redescubrimiento de Oriente antiguo AbstractIn the early seventeenth century, two of the most interesting European travellers to the Near East, the Spanish García de Silva y Figueroa and the Italian Pietro della Valle visited the court of Shah Abbas the Great of Iran. Both had a very interest in the monuments and ruins, and the two visited the most interesting ruins of the country, as Persepolis. Pleasant narrators of their experience, the Spanish and the Italian were the first Europeans to highlight interesting aspects of ancient cultures, making significant contributions to the archeology and history of the ancient Near East.Keywords: García de Silva y Figueroa, Pietro della Valle, Persepolis, rediscovery of the ancient Near East
Abu Theirah, Nasiriyah (Southern Iraq): Preliminary report on the 2013 excavation campaign
Authors: D'Agostino Franco , Romano Licia , Kadhem Ghanim Ali
Published: June 2023

In this paper the results of the third excavation campaign in Fall 2013 at Abu Tbeirah, Nasiriyah (Southern Iraq), a site whose remains can be chronologically ascribed so far to the second half of 3rd Millennium BC, are presented. The archeological activities in the South-Eastern and North-Eastern sectors of the tell are shown, with the aim of shedding a new light on the life of a big Sumerian city located only 16 km East from the great ancient site of Ur.Keywords: Southern Iraq, Southern Mesopotamia, Abu Tbeirah, Early Dynastic, Akkad. RiassuntoIn questo lavoro sono presentati i risultati della terza campagna di scavo dell’autunno 2013 ad Abu Tbeirah, Nasiriyah (Iraq meridionale), un sito i cui ritrovamenti possono essere attribuiti cronologicamente alla seconda metà del 3 ° millennio a.C. Sono presentate le attività archeologiche nel settore sud-orientale e nordorientale del tell, che possono gettare una nuova luce sulla vita di una grande città sumera situata a soli 16 km a est del grande sito di Ur (Tell al-Muqayyar).Parole chiave: Iraq meridionale, Mesopotamia meridionale, Abu Tbeirah, Proto-dinastico, Accadico.
Liderazgo Educativo y Educación Ciudadana: Evidencia del Caso Chileno
Authors: Jara Ibarra Camila , Sánchez Bachmann Macarena , Cox Cristián
Published: June 2023

Desde hace más de una década que existe preocupación por el desencanto ciudadano con la política, su correlato en el incremento en la percepción de desconfianza en las instituciones políticas y una reducción en la participación electoral y en organizaciones políticas tradicionales. Ante la decreciente participación política formal, surge la importancia de la educación ciudadana escolar, especialmente si se considera evidencia previa que indica que el comportamiento cívico de los jóvenes es un fuerte predictor de su participación como ciudadanos adultos. Por otra parte, una línea de investigación extensa y de larga data confirma la importancia del liderazgo escolar en los resultados de aprendizaje de los estudiantes. Este estudio analiza la relación del liderazgo escolar con el desarrollo de competencias ciudadanas en Chile, examinando características del liderazgo que favorecen resultados de los estudiantes en términos de sus conocimientos, habilidades y actitudes ciudadanas. Mediante una metodología mixta que realiza un análisis de datos secundarios cuantitativos y datos primarios cualitativos, revela evidencia consistente acerca del rol clave del liderazgo educativo en la definición e importancia de la formación ciudadana en la institución escolar en su conjunto. Específicamente, el estudio identifica que los líderes escolares contribuyen a la consolidación de un proyecto educativo promoviendo la generación de identidad y sentido de pertenencia en los estudiantes, lo que contribuye al desarrollo de sus competencias ciudadanas.
Incidencia del Género en el Estrés Laboral y Burnout del Profesorado Universitario
Authors: Garcés-Delgado Yaritza , García-Álvarez Edgar , López-Aguilar David , Álvarez-Pérez Pedro Ricardo
Published: June 2023

El estrés laboral y el burnout son enfermedades psicosociales que influyen negativamente en la salud. Una de las variables que puede estar relacionada con el estrés laboral es el género. Precisamente, este trabajo presenta un análisis para determinar en qué medida las profesoras universitarias manifiestan mayor nivel de estrés en el ámbito laboral. A través de una metodología cuantitativa no experimental se implementó un cuestionario construido ad hoc. El instrumento contiene treinta ítems estructurados en cinco subdimensiones (estrés de rol, estrés en profesores universitarios, agotamiento emocional, despersonalización y falta de realización personal). Se realizaron análisis estadísticos descriptivos, inferenciales, de fiabilidad y validez de la escala y se utilizó la Teoría de la Medición de Rasch (TMR) para el análisis de perfiles. Los resultados revelan la presencia de niveles moderados de estrés en 564 docentes universitarios, principalmente, relacionado con tareas específicas del ámbito laboral. Además, se confirmó que las mujeres en sus primeros años de desarrollo profesional, con una elevada carga docente y sin cargos de responsabilidad en la gestión universitaria son quienes tienden a experimentar mayor grado de estrés. Estos resultados justifican la necesidad de atender a factores psicosociales y la gestión del estrés que afectan al profesorado desde una vertiente social, psicológica y educativa para el afrontamiento correcto de sus funciones.
Desafíos para Aumentar el Uso de los Resultados de la Investigación Educativa
Authors: Camarero-Figuerola Marta , Tierno-García Juana María , Iranzo-García Pilar , Renta-Davids Ana Inés
Published: June 2023

La usabilidad de la investigación educativa sigue siendo un desafío en las políticas, agendas internacionales, y en los foros científicos. En educación el desencuentro percibido entre los intereses de la comunidad investigadora y las necesidades del ejercicio docente es amplio. Pretendemos comprender cómo esa dicotomía influye en los usos, temáticas de interés y formas de acceso a los resultados de los procesos de indagación educativa, y plantear propuestas que faciliten la utilización de evidencias en la mejora de la práctica. Se utiliza una metodología cualitativa, con entrevistas semiestructuradas a informantes clave (responsables de políticas educativas, directivos escolares y docentes). Las evidencias de la investigación se usan, mayoritariamente, en planificación y gestión de procesos. Las temáticas de interés son heterogéneas (metodologías y funcionamiento educativo, principalmente). El acceso a los resultados de investigación, aunque variado (revistas, formación permanente, recursos on-line), está lastrado por un lenguaje excesivamente técnico, falta de tiempo y escasa aplicabilidad percibida. Se concluye que las políticas para optimizar el uso de la investigación deben promover la mejora de la formación inicial y permanente, el impulso de dinámicas colaborativas que involucren a docentes desde el diseño inicial de la investigación y el establecimiento de valores consensuados por la comunidad educativa.
Bio-conventional bleaching of kraft-AQ pulp of A. cadamba by crude xylanases from Coprinellus disseminatus MLK-03 and effect of residual enzyme on effluent load
Authors: Lal Mohan , Dutt Dharm , Tyagi C. H. , Kaur Harjeet , Kumar Amit
Published: June 2023

A new thermo-alkali-tolerant crude xylanase from Coprinellus disseminatus decreased kappa number by 34.38% and improved brightness and viscosity by 1.6 and 6.47% respectively after XE1-stage during prebleaching of Anthocephalus cadamba kraft-AQ pulp. At 2.4% chlorine demand, crude xylanase in a XECEHH (X= enzymatic prebleaching stage, E= extraction stage, C= chlorination stage, H= hypochlorite stage) bleaching sequence improved pulp brightness, tensile index, burst index, and double fold numbers by 3.66%, 4.78%, 6.38%, and 11.11%, respectively with a reduction in viscosity (10.59%) and tear index (10.77%) compared to the control. Combined bleach effluent of the XECEHH sequence mitigated adsorable organic halides (AOX) by 21% and increased chemical oxygen demand (COD), bio-chemical oxygen demand (BOD), and colour by 67.18%, 84.78%, and 97.53%, respectively, compared to the control. Residual enzymes that entered during enzymatic prebleaching stage decreased AOX, COD, BOD, and colour of combined effluent of the XECEHH bleaching sequence progressively and on 6th day, and these were reduced by 23.78%, 0.04%, 15.00%, and 0.61%, respectively, compared to the control.
Chemical structure and pyrolysis response of beta-O-4 lignin model polymer
Authors: Liu Jiang-Yan , Wu Shu-Bin , Lou Rui
Published: June 2023

Hydroxyphenyl (H-type) and guaiacyl (G-type) lignin model polymers composed of the β–O–4 structure without g–hydroxymethyl groups were synthesized. The chemical structures of the H- and G-type lignin models were characterized by 1H- and 13C-NMR, as well as MALDI-TOF/MS. The pyrolysis response was analyzed by means of TG-DTG, Py-GC/MS, and a tube furnace technique. 1H-, 13C-NMR, and MALDI-TOF/MS showed that the lignin models were linear polymers. The polymers included the β–O–4 linkage, as in natural lignin. Pyrolytic products from H-type lignin model only possessed p-hydroxyphenyl structure without methoxyl groups, and the pyrolytic products from G-type lignin model only possessed guaiacyl structure with methoxyl groups. Pyrolysis products from H- and G- type lignin models were classified into char, gas, and liquid (bio-oil), and the gaseous products of two model compounds mainly consisted of H2, CO, CH4, CO2, and C2H4.
Behavior of kenaf fibers after immersion in several water conditions
Authors: Nosbi Norlin , Akil Hazizan Md , Mohd Ishak Z. A. , Bakar A. Abu
Published: June 2023

Behaviors of kenaf fibers after long-term immersion under several environmental water conditions were studied. Water absorption tests were carried out by immersing kenaf fibers in distilled water, sea water (pH 8.4), and acidic solution (pH 3) at room temperature for 140 days. The test results indicated significant differences among the kenaf fibers immersed in different environmental conditions, with kenaf fiber immersed in sea water exhibiting the highest level of water absorption, whereas kenaf fiber immersed in acidic solution showed the lowest water absorption values. The tensile strength of the immersed kenaf fibers decreased with increasing immersion time, implying degradation of the fiber. Investigation on the microstructure of immersed kenaf fibers using SEM reveal the degradation of the kenaf fiber with the development of micro-cracks and increased surface roughness of the fiber.
Protein extraction from secondary sludge of paper mill wastewater and its utilization as a wood adhesive
Authors: Pervaiz Muhammad , Sain Mohini
Published: June 2023

In this study, secondary sludge (SS) from a kraft paper mill was used as a source of biomass to recover protein and investigate its potential use as a wood adhesive. The process of protein recovery involved disruption of the floc structure in alkaline medium to disintegrate and release intercellular contents into the aqueous phase followed by separation of soluble protein. Finally, the soluble protein was subjected to low pH precipitation and the pelletized sludge protein, referred to as recovered sludge protein (RSP) was tested for crude protein, moisture, and other contents. A significant process yield of 90% in terms of precipitation of soluble protein from disintegrated sludge was estimated through calorimetric studies, whereas an overall material balance confirmed a RSP yield of up to 23% based on total suspended solids of raw sludge. The RSP containing 30% crude protein was used as a wood adhesive and its adhesion performance was compared with soy protein isolate (SPI) and phenol formaldehyde (PF) resin. The testing of plywood lap joints has shown up to 41% shear strength level of RSP adhesive compared to PF. This work demonstrates the technical feasibility and potential of SS as a biomass resource to develop eco-friendly adhesives for wood composite applications.
Soda-AQ pulping of Paulownia wood after hydrolysis treatment
Authors: Dogu Dilek , Kose Coskun , Kartal S. Nami , Erdin Nurgun
Published: June 2023

A trihybrid clone of Paulownia fortunei x tormentosa x elongata was used for pulp and paper production using the soda-anthraquinone (AQ) process, comparing the results with those from Paulownia fortunei. An autohydrolysis process had been previously carried out on this raw material. A composite central experimental design and a multiple regression were used for modeling and optimizing the process. A valuable liquid phase could be obtained from the autohydrolysis process of Paulownia, trying to minimize cellulose degradation for pulp and paper production. A compromise to maximize the glucan and minimize the xylan contents in the postautohydrolysis solid phase could be achieved at 187.5ºC and 15 minutes. A suitable cellulosic pulp with kappa number ranging from 12.2 to 69.2 and ISO brightness from 18.2 to 30.6% presented better results than those from other studies. Regarding handsheets physical properties (tensile index 37.3 N·m/g ) and viscosity (848 cm3/g), significant improvements could be obtained when compared with previous results of a similar process using Paulownia fortunei or Paulownia elongata.
A Novel Leptin Receptor LEPR Variant in a Toddler With Early-Onset Fatal Obesity
Authors: Perge Kevin , Pons Linda , Protsenko Nastassja , Collin-Chavagnac Delphine , Nicolino Marc
Published: June 2023

Monogenic obesity generally results in severe early-onset obesity associated with abnormal feeding behavior and endocrine disorders. We report here an extremely severe case of early-onset obesity associated with hyperphagia in an 11-month-old boy without other signs of a syndromic obesity. He developed severe obstructive sleep apnea, dyslipidemia, hepatic steatosis with cytolysis, and acanthosis nigricans with insulin resistance in the first months of life. Laboratory investigations showed an elevated serum leptin level (80.03 ng/mL, normal range 2.45–6.55 ng/mL). Next-generation sequencing of obesity genes panel identified a novel homozygous intronic variant in leptin receptor gene (LEPR), c.703 + 5G>A, predicting affected splicing that resulted in a frameshift, premature stop, and truncation of the protein beyond the cytokine receptor homology domain 1. The child died at 27 months of age in the absence of available specific drug therapy.
Students’ Behavioural Intention Regarding E-Learning During the COVID-19 Pandemic/Bihevioralna namjera učenika u e-učenju tijekom pandemije Covid-19
Authors: Milošević Isidora , Ruso Jelena , Rakić Ana , Arsić Sanela , Nikolić Djordje
Published: June 2023

Abstract Due to the appearance of COVID-19, the newly emerged situation has provoked numerous reactions in the field of education, both in the world and in Serbia. Prompted by this problem, the authors of this paper conducted a survey to determine students' behavioural intention, as well as their readiness to use e-learning during the COVID-19 pandemic. E-learning has integrated technology and education and has proven to be a powerful tool that enables the education system to respond to the challenges of modern society. In this research, an online questionnaire was distributed to the students of the University of Belgrade. To process the results, the SEM methodology was employed, which enabled the testing of the proposed hypotheses. The obtained results showed the students’ behavioural intention can be directly and indirectly predicted by the joint influence of the role of authority, innovative orientation, user-friendly learning, expected performance, and quality of e-learning. This knowledge enabled a comprehensive analysis that encompassed the e-learning experiences students gained during a state of emergency.Key words: COVID-19; e-learning; higher education; students’ behavioural intention; modelling---SažetakZbog pojave virusa COVID-19, novonastala situacija izazvala je brojne reakcije u obrazovanju, kako u svetu tako i u Srbiji. Potaknuti ovim problemom, autori ovog rada proveli su istraživanje kako bi utvrdili namjere ponašanja učenika, kao i njihovu spremnost na korištenje e-učenja tijekom COVID-19. E-učenje je integriralo tehnologiju i obrazovanje te se pokazalo kao moćan alat koji obrazovnom sustavu omogućuje da odgovori na izazove modernog društva. U ovom istraživanju studentima Sveučilišta u Beogradu podijeljen je online upitnik. Za obradu rezultata korištena je SEM metodologija koja je omogućila provjeru postavljenih hipoteza. Dobiveni rezultati pokazali su da se Bihevioralna namjera korištenja e-učenja može izravno i neizravno predvidjeti zajedničkim utjecajem uloge autoriteta, inovativne orijentacije, učenja prilagođeno korisniku, očekivanog učinka i kvalitete elektroničkog učenja. Ovo saznanje omogućilo je provođenje sveobuhvatne analize koja je obuhvatila iskustva učenika u e-učenju tijekom izvanrednog stanja.Ključne riječi: COVID-19; E-učenje; Više obrazovanje; Bihevioralna namjera učenika; Modeliranje
Analysis of the cultivation of social responsibility of physical education students in the context of Healthy China
Authors: Li Ting
Published: June 2023

Background and Study Aim. 'Healthy China’ is an important symbol of China's social development and national prosperity. As practitioners and disseminators of sports and health, physical education of students should actively play their own specialties in the process of "Healthy China" construction. This study investigates the social responsibility and cultivation of college students so as to create a good atmosphere for educational groups from the four levels of society, family, school, and itself.
Material and Methods. The participants were 53 students (aged 19-21 years) from the College of Physical Education and Health of East China Normal University. The "Questionnaire on the Cultivation of Social Responsibility of Students Majoring in Physical Education" was used as a search tool. A total of 60 questionnaires were distributed using the online platform in this study, and 53 valid questionnaires were recovered after sorting and screening. Among them, 32 were male students and 21 were female students.
Results. Students lack enthusiasm and initiative in paying attention to national policies, learning health knowledge and technology, and participating in health education. There is also a lack of self-control and perseverance in physical exercise and healthy eating. Insufficient sleep and poor psychological state lead to low participation in social activities; College students have a low awareness of promoting sports spirit.
Conclusions. The findings of this study shed light on the crucial need to cultivate social responsibility among college students majoring in sports at multiple levels: society, family, school, and individual. To effectively promote "Healthy China" and maximize the potential impact of physical education students, concerted efforts must be made to address the identified shortcomings and foster a holistic approach to social responsibility.
Combination of varied agility training with small sided games: How it influences football dribbling skills?
Authors: Suryadi Didi , Okilanda Ardo , Yanti Novi , Suganda Mikkey Anggara , Mashud  , Santika I Gusti Putu Ngurah Adi , Vanagosi Kadek Dian , Hardinata Riyan
Published: June 2023

Background and Study Aim. Dribbling is the ability of a soccer player to carry the ball by kicking it slowly or forcefully. Therefore, special treatment is needed so that the skills of dribbling the ball get better. This study aims to prove the effect of a combination of agility variation exercises with small sided games on soccer dribbling skills. Material and Methods. In this study using the type of experiment design one-group pretest and posttest. The population in this study was Pusaka FC club football athletes. The research sample used purposive sampling so that there were 20 players who were the sample. Data analysis in this study was assisted by using the SPSS Version 26 application. Results. Based on the results of the analysis of the research data above, it shows that there is a difference in the mean value at the pretest of 21.85 and the mean value of the posttest of 17.48 thus showing an increase that occurred, namely by 4.37. Based on the results of the significance value obtained 0.000 <0.05 then the data shows that the combination of variations in agility training and small training sided games have a significant effect on dribbling skills in soccer games. Conclusions. The results prove that the combination of agility variation exercises with small sided games have a significant effect on football dribbling skills. Based on these results, a combination of agility variation exercises with zig-zag runs can be implemented to improve dribbling skills soccer player.
Analysis of differences in physical fitness levels of extracurricular futsal students: Survey studies on urban and rural environments
Authors: Rubiyatno  , Perdana Rahmat Putra , Fallo Ilham Surya , Arifin Zainal , Nusri Ardi , Suryadi Didi , Suganda Mikkey Anggara , Fauziah Ella
Published: June 2023

Background and Study Aim. Maintaining physical fitness is essential to perform daily tasks with the required level of efficiency. By being physically fit to design an ideal training plan. This study aims to determine the profile and differences in the level of physical fitness in futsal extracurricular students in urban and rural environments. Materials and Methods. The method in this study used a quantitative approach through surveys with researchers providing a physical test and measurement (TKJI) for 13-15 year old to futsal extracurricular students. This research was conducted at SMP Negeri 11 Pontianak City and SMP Negeri 3 Sukadana, Kayong Utara Regency. Purposive sampling technique in determining the sample so that 40 students were sampled. To see the difference through the normality prerequisite test stage, homogeneity test and t test. Data analysis was assisted by using the SPSS Version 26 application. Results. According to the study findings, the average physical fitness score of futsal extracurriculars in urban areas was 12.50, while the average in rural environments was 15.15. Furthermore, a significant difference between urban and rural extracurricular futsal contexts is shown by a significance value of 0.000 < 0.05. Conclusions. This finding supports the hypothesis that the level of physical fitness necessary for extracurricular futsal varies significantly between urban and rural areas. This study provides evidence that futsal extracurricular students in rural areas have better physical fitness than students in urban areas. These findings can be a reference for sports practitioners to be able to develop exercise programs to improve the physical fitness of children aged 13-15 years, especially for playing futsal.
Hardiness in the profession of sports coaches and physical education teachers
Authors: Korobeinikova Ivanna , Korobeynikov Georgiy , Kokun Oleg , Raab Markus , Korobeinikova Lesia , Syvash Iryna
Published: June 2023

Background and Study Aim. To study psychological features of sports coaches and physical education teachers’ professional hardiness.
Material and methods. The study involved 60 participants. Among them, 24 were coaches of children's and youth sports schools, 19 coaches of national teams of Ukraine and 17 physical education teachers. English-language version of the Professional Hardiness Questionnaire (PHQ) were used. The development of the English-language version of the PHQ was based on its initial Ukrainian-language version (http://prof-diagnost.org). The accuracy of its translation into English was checked and corrected by 12 bilingual specialists with degrees in medicine and/or psychology. To identify the peculiarities of the relationship between the indicators of professional resilience in different professional groups, we conducted a Spearman correlation analysis.
Results. The analysis of professional hardiness revealed the presence of significant differences between the surveyed groups of coaches and physical education teachers by various indicators. It turned out that the length of service in the respective positions of national team coaches is significantly higher than that of Youth Sports School (YSS) coaches and physical education teachers. This indicates the presence of greater professional experience among this category of coaches. Accordingly, physical education teachers and coaches of national teams have significantly higher professional experience than coaches of YSS. As a result, the majority of young specialists are among the coaching staff of the YSS. The correlation coefficient between the general level of professional hardiness and the namely professional component of 0.80 is much higher for coaches of national teams. Among physical education teachers it reaches 0.61, most likely this is because the control over the work of this group is less specific in contrast to the work of the coach. Coaches of YSS have the lowest level of the namely professional component 0.50, we explain this by the fact that the overall level of experience in the position is half as much as in the previous two groups.
Conclusions. The conducted analysis made it possible to establish relationships between the general level of professional hardiness and indicators of professional hardiness in each group of coaches and teachers.
Instructional cues in the teaching of dribbling in school physical education classes
Authors: Pontes Leandro B. C. , Tani Go , Corrêa Umberto Cesar , Silveira Sergio Roberto
Published: June 2023

Background and Study Aim. A cue is a short and concise instruction about the key aspects of a successful performance. In addition to an attentional strategy, an instructional cue has been considered as a Physical Education teaching content for developing the students' knowledge about performing motor skills. This study investigated the effects of perceptual and motor instructional cues on the learning of dribbling during physical education classes at school.
Material and Methods. The sample comprised 81 students from three elementary full-time classes of a public school, aged between 6 to 9 years old. The study consisted of three experimental groups each one from a given PE classroom: (1) perceptual cue - “eye on the circuit”; (2) motor cue - “pushing the ball at waist level”; and control group – no cue.
Results. Results showed that motor cue group improved the performance in relation to all measures (stage of development, ball control, and runtime). In addition, they revealed that this group had superior performance comparatively to perceptual cue and control groups.
Conclusions. This study examined the effect of verbal motor cues on students' learning of dribbling in a Physical Education class. The results showed that the verbal motor cue functioned as a useful tool for providing students with information about the correct technique for dribbling. This information helped students to understand and execute the correct technique, resulting in improved dribbling performance. Overall, this study suggests that verbal motor cues can be a valuable teaching tool for Physical Education teachers when designing practice tasks. By selecting instructions that have the potential to improve students' knowledge about performance, teachers can help their students to acquire skills more effectively. These findings have important implications for the design of practice tasks in Physical Education classes and can help to optimize student learning outcomes.
Circuit training bosu ball: Effect on balance and accuracy of archery athletes
Authors: Prasetyo Heru , Siswantoyo  , Prasetyo Yudik , Hartanto Amri
Published: June 2023

Background and Study Aim. Balance is very decisive in producing good and correct basic archery techniques, resulting in good archery accuracy. This study aims to determine the effect of circuit training bosu ball on improving balance and accuracy in archery athletes.
Material and Methods. This study was an experimental research design that involved 12 archery athletes at Bibis Archery Club Bantul Regency, aged between 14-17 years. The training program consisted of 18 circuit training sessions using a bosu ball. The archery accuracy test was used to assess the athletes' accuracy in sticking arrows to a target located 30 meters away. The balance test was conducted using the Stork Stand Test, which involved standing on one leg, on the dominant leg, for as long as possible. The statistical analysis used was a t-test, specifically paired sample test.
Results. The pretest balance and archery accuracy scores of the 12 archery athletes at Bibis Archery Club Bantul Regency were recorded. The pretest balance score averaged 44.12 seconds, and the pretest archery accuracy score was 216.50. After 18 circuit training sessions with bosu ball, the posttest balance score increased to an average of 51.44 seconds, and the posttest archery accuracy score increased to an average of 282.83. Statistical analysis revealed that the improvement in balance and archery accuracy was significant, with a p-value of 0.000 <0.05, indicating that the training using bosu ball can effectively improve the balance and archery accuracy of young athletes.
Conclusions. Overall, our findings suggest that circuit training with bosu ball significantly improves balance and archery accuracy in young athletes. Specifically, the participants demonstrated an average increase  in their balance scores  improvement in their archery accuracy following the training. These results highlight the potential benefits of incorporating bosu ball exercises in the training regimen of archery athletes.
The influence of visitors’ specific motor actions on the perception and evaluation of museum exhibits
Authors: Yermakova Tetiana , Iermakov Sergii , Tomanek Mateusz , Jagiello Wladyslaw , Zavatska Lidiya
Published: June 2023

Background and Study Aim. An important element in the system of museum activities are approaches to attracting visitors. Among these approaches, one can single out the dialogue of the museum with visitors through specially organized active motor actions. Such actions have certain parameters (the nature of physical activity and its age-appropriateness, intensity, duration, etc.), which can influence the perception and evaluation of exhibits and the decision of visitors to return to the museum. The purpose of the study is an attempt to explain how specially organized active motor actions of visitors affect the perception and evaluation of museum exhibits and getting satisfaction from visiting.

Material and Methods. Publications from the Web of Science Core Collection (WoS) were selected as the source of information. The search was carried out using keywords that characterize the interaction of visitors with the subject-spatial environment of the museum. The VOSviewer program was used to analyze the relationships between documents retrieved from WoS.

Results. It is argued that the sedentary behavior of visitors, typical for many museums, does not contribute to their involvement in the museum space and the creation of meaning in museums. It is noted that an important aspect in the organization of special motor actions of visitors is the orientation to their motivation and interpretation of movements in the museum exhibits. The optimal level of physical activity has been identified. It creates a comfortable feeling and contributes to an adequate perception of the exhibits and corresponds to the main mission of the museum.

Conclusions. Specially organized motor actions form the maximum motivation for visitors to study the museum exhibits. Such movements carry a certain semantic character of the theme of the museum.