bluuebunny/crossref_metadata_2025 huggingface dataset:
Possibility of a systemic biopsychosocial approach to the examination of adolescent orthopedic patients using the data of primary express-diagnostics of PSAF autodesadaptation
Authors: Baindurashvili Alexey G. , Soloviev Mikhail M. , Solovyova Karina S. , Pyatakova Galina V. , Zharuk Ivan A. , Solovyova Anna M. , Baindurashvili Anna A.
Published: October 2023

BACKGROUND: A complex biopsychosocial approach to the diagnosis and treatment of patients of different ages and pathologies is a doctrine of modern medicine. However, this approach is slowly being implemented in practical healthcare, and a biomedical orientation and approach remains the dominant model.
AIM: To demonstrate the possibility of using the primary express diagnostics of PSAF autodesadaptation as the first unifying step to realize the biopsychosocial approach in the examination of adolescents and young adult patients with orthopedic pathology and traumatic injuries.
MATERIALS AND METHODS: The article presents the analysis of literary sources to substantiate the relevance of the biopsychosocial approach in medicine. Clinical examples and preliminary analysis of the express diagnostics of PSAF autodesadaptation in seven inpatients were also presented.
RESULTS: The expression and structure of patients complaints were obtained. Thus, individual-oriented recommendations for the treatment and rehabilitation of these patients were developed.
CONCLUSIONS: Further development and refinement of the technique of the primary express diagnostics of PSAF autodesadaptation, given its simplicity and accessibility, can allow its use during admission in a specialized hospital and outpatient admission when carrying out rehabilitation measures.
Changes in sagittal vertebral–pelvic ratios in children with a high position of the large trochanter after surgical treatment
Authors: Pozdnikin Ivan Yu. , Bortulev Pavel I. , Vissarionov Sergei V. , Barsukov Dmitriy B. , Baskaeva Tamila V.
Published: October 2023

BACKGROUND: Alteration in the anatomical shape and structure of the proximal femur is a common orthopedic problem in children. In most cases, this is accompanied by a high position of the large trochanter, which leads not only to the development of extraarticular impingement syndrome and the progression of coxarthrosis, but also to impaired vertebralpelvic relations.
AIM: To evaluate the effect of the transposition of the large trochanter in children on changes in the radiological parameters of sagittal vertebralpelvic ratios.
MATERIALS AND METHODS: The study included 20 patients (20 hip joints) aged 915 years with deformity of the proximal femur, which was accompanied by a high position of the large trochanter. The patients underwent clinical and X-ray examination before and after surgical treatment, i.e., transposition of the large trochanter according to original methods. The pelvic angle, lumbar lordosis, thoracic kyphosis, pelvic deviation angle, sacral tilt, and sagittal vertical axis (SVA) were evaluated. The obtained data were analyzed statistically.
RESULTS: Excessive pelvic anteversion and vertical posture of the hyperlordotic type are characteristics of the patients analyzed. These signs were manifested as a significant increase in global lumbar lordosis and the angle of inclination of the sacrum and a decrease in the angle of inclination of the pelvis, in combination with a negative imbalance in SVA. The surgery made it possible to normalize the articulotrochanteric distance index and increase the angle of inclination of the pelvis while reducing the sacral slope, which improved global lumbar lordosis.
CONCLUSIONS: After the surgical intervention, in addition to restoring normal ratios in the hip joint and eliminating the extraarticular femoroacetabular impingement syndrome, the hyperlordotic type of vertical posture transformed toward the normal one in accordance with the classification of R. Rousully, which resulted in the prevention of the development of degenerative and dystrophic changes in the lumbar spine.
Computed tomography-guided intraoperative navigation in children with congenital scoliosis versus freehand/fluoroscopy methods
Authors: Abdaliyev Seidali S. , Yestay Daniyar Zh. , Vissarionov Sergei V. , Baitov Daulet T. , Serikov Serik Zh. , Chsherbina Alexandr Yu.
Published: October 2023

BACKGROUND: The choice of techniques for the treatment of children with congenital spinal deformities remains one of the most significant problems of spinal surgery. This topic is relevant given the peculiarities of the disease course, severity and rigidity of deformities, their steady and rapid progression, formation of compensatory curvature, and a significant decrease in the quality and life expectancy of patients.
AIM: To compare screw misposition, adverse outcomes, intraoperative blood loss, and time required for pedicle screw placement with further deformity correction under computed tomography (CT) guidance with intraoperative navigation versus fluoroscopy.
MATERIALS AND METHODS: This single-center, prospective comparative study was conducted from 2019 to 2022 at the National Scientific Center of Traumatology and Orthopedics named after academician N.D. Batpenov. Patient demographics and surgical outcomes were obtained from the medical records. All patients underwent a comprehensive clinical and radiological examination before surgery, after surgery, and at the stages of dynamic observation. Data of patients with congenital malformations of the spine were analyzed. The study involved 42 patients aged 318 years with congenital kyphoscoliosis of the thoracic and/or lumbar spine. The patients were divided into two groups according to the method of surgical correction used: the O-arm navigation group and the C-arm group.
RESULTS: Data of patients who underwent surgery for congenital scoliosis of the spine were analyzed. The patients were divided into the O-arm navigation group, which included patients who underwent surgery using the O-arm mobile intraoperative CT with the seventh-generation Stealth Station navigation system in combination with intraoperative neuromonitoring, and the C-arm group, which included patients who underwent surgery under the control of the intraoperative C-arm. In both groups, 364 screws were placed, of which 189 screws were placed under neuronavigation, and 175 screws were placed using the C-arm. The effectiveness of the intraoperative neuronavigation system in combination with neuromonitoring showed 97.11% correct placement (grades A and B) of pedicle screws. The use of an intraoperative C-arm showed 89.63% (grades A and B) correctness. The proportion of misplaced screws corresponding to GertzbeinRobbins classes CE was higher in the C-arm group (10.37%) than in the navigation group (1.49%) (p 0.005). No severe neurological disorders, postoperative infection, or adverse clinical outcomes were observed in both groups.
CONCLUSIONS: The installation of pedicle screws using CT-guided navigation (O-arm) did not prolong the operation time, did not increase blood loss, and reduced the risk of screw mispositioning compared with freehand and fluoroscopy pedicle screw placement.
Polymelia of the upper limb
Authors: Golyana Sergey I.
Published: October 2023

BACKGROUND: The most rare and extremely rare malformation of the upper limb is polymelia, i.e., doubling (triple) limb. In the literature, no more than 20 cases of an increase in the number of lower limbs and only three cases of doubling (triple) of the upper limb (in humans) have been described.
CLINICAL CASE: A 2-year-old child diagnosed with polymelia of the right upper limb was examined and treated at our clinic. Clinical examination revealed two shoulder blades and one clavicle, with a normal anatomical location and development. Behind, an upper limb ended with the stump of the forearm, represented by an underdeveloped ulna. Moreover, the elbow joint was in a state of flexion contracture at an angle of 170, and the ulna was turned posteriorly and 1520 medially. The anterior humerus in the proximal section was underdeveloped, and in the distal section, it articulated in a normally formed elbow joint with the radius and ulna. The hand had five fingers with moderate underdevelopment and deformity of the 5th finger. After examining the bone, muscle, and vascular anatomy of the doubled limb, surgery was performed; as a result, a nearly complete anatomical and functional limb was reconstructed from the two segments of one upper limb.
DISCUSSION: Polymelia is an extremely rare variant of a congenital anomaly of the limbs; thus, only a few cases are reported in the literature, which differs significantly from each other in clinical manifestations. Many questions related to the etiology and pathogenesis of these malformations are unexplored. The doubling of the limbs in animals is caused by both teratogenic environmental factors and genetic mutations. In any case, reconstructive surgery makes it possible to effectively treat children with such anomalies in the development of the limbs and obtain good results.
CONCLUSIONS: The restoration of the upper limb of children with polymelia is quite difficult, but doable. Adequate analysis of all examination data and rational planning of surgical intervention in such cases creates conditions that enable achieving the maximum anatomical and functional results of upper limb reconstruction in children with this developmental anomaly.
Functional activity of the maxillofacial region muscles in children with arthrogryposis multiple congenita
Authors: Savina Margarita V. , Agranovich Olga E. , Baindurashvili Anna A. , Farkhullina Alina S. , Petrova Ekaterina V. , Blagovechtchenski Evgeny D.
Published: October 2023

BACKGROUND: Disorders of the maxillofacial region in children with аrthrogryposis multiplex congenita can be congenital or occur as secondary changes. The lower jaw and associated muscles play important roles in the functioning and development of the maxillofacial region. In children with аrthrogryposis multiplex congenita, the functional activity of the muscles of the maxillofacial region has not been studied.
AIM: To estimate the functional activity of the muscles of the maxillofacial region in children with аrthrogryposis multiplex congenita.
MATERIALS AND METHODS: Surface electromyography was used to examine the masticatory and facial muscles of 47 children aged 317 years with arthrogryposis (main group) and 20 healthy children with orthognathic bite (control group). The main and control groups were examined by a dentist and had not previously received orthodontic treatment. The bioelectric activities of the temporalis and masseter muscles on the right and left sides were simultaneously registered at rest and during functional tests (opening of the mouth, moving the lower jaw forward, jaw compression, and chewing). The average activity amplitudes were taken into account, and asymmetry coefficients were calculated. The obtained data are statistically processed.
RESULTS: Electromyography results, according to different functional tests, revealed disorders in 65%88% of children with аrthrogryposis multiplex congenita. In all samples, the tonic activity of the masticatory muscles increased at rest, the amplitude of the activity of masseter and temporalis muscles decreased, signs of an imbalance of the masticatory muscles such as the hyperactivation of the temporalis muscle compared with the masseter muscle with jaw compression and chewing were noted, and muscle asymmetry indices increased. The frequency and degree of functional muscle disorders prevailed in children with deciduous and temporary occlusion.
CONCLUSIONS: Arthrogryposis multiplex congenita in children is characterized by a high frequency of impaired functional activity of the muscles of the maxillofacial region, which can negatively affect bite formation, chewing function, and articulation.
The journal Pediatric Traumatology, Orthopaedics and Reconstructive Surgery is 10 years old!
Authors: Baindurashvili Alexey G.
Published: October 2023

Ten years ago, the first issue of the journal Pediatric Traumatology, Orthopaedics and Reconstructive Surgery was published in September 2013. During this time, the journal has become a worthy scientific edition and earned popularity and authority among scientists in Russia and the world. We express our gratitude to all members of the editorial board, authors, and readers! We congratulate the journal on its anniversary and wish further development and new achievements!
Commentary to the article by D.R. Wenger et al.: Corrective shoes and inserts as treatment for flexible flatfoot in infants and children
Authors: Kenis Vladimir M.
Published: October 2023

This is a commentary to the article by Wenger D.R., Mauldin D., Speck G., Morgan D., Lieber R.L. Corrective shoes and inserts as treatment for flexible flatfoot in infants and children. Pediatric Traumatology, Orthopaedics and Reconstructive Surgery. 2023;11(2):253264. DOI: 10.17816/PTORS321250.
Pediatric orthopedics and traumatology: The future begins today
Authors: Baindurashvili Alexey G. , Kenis Vladimir M.
Published: October 2023

Advances in pediatric orthopedics and traumatology have certain patterns that originate in fundamental research and continue in the latest technologies. This article presents the views of the authors on the development of the most promising strategic trends in pediatric orthopedics and labels the main directions, starting from classical pediatric orthopedics and continuing with the latest achievements in pediatric neuroorthopedics and genetics. It also describes some of the advances in the treatment of genetic diseases and points to new challenges that pediatric orthopedists face in connection with the invention of life-changing methods of targeted therapy. Without claiming to be complete, the article outlines the trends for the possible joining of the efforts of scientists, practitioners, and researchers of related specialties, which will accelerate the introduction of the best practice for the current generation of pediatric traumatologists and orthopedists.
165 years since the birth of Henry Ivanovich Turner
Authors: Vissarionov Sergei V.
Published: October 2023

September 29, 2023, is a significant date for Russian medicine. It is 165 years since the birth of an outstanding physician and an honored scientist of the RSFSR, Professor Henry Ivanovich Turner.
A person of high culture and a talented organizer, Professor Turner is widely known in Russia and abroad as a prominent scientist, a unique orthopedic specialist, and a brilliant public figure. His name rightfully stands among great scientists in Russian surgery and orthopedics.
Henry Turner organized and became the head of the first Russian department and clinic of orthopedics in the Military Medical Academy and initiated the foundation of the first Society of Orthopedic Surgeons in the country. He was the first in St. Petersburg to promote first aid and physical training for the military. Despite the abundance of his scientific and clinical achievements, he mainly focused on the struggles for the fate of children with musculoskeletal disorders.
Significance of Pulse-Like Ground Motions and Directivity Effects in Moderate Earthquakes: The Example of the Mw 6.1 Gölyaka-Düzce Earthquake on 23 November 2022
Authors: Türker Elif , Yen Ming-Hsuan , Pilz Marco , Cotton Fabrice
Published: October 2023

The 1400 km long North Anatolian Fault Zone in Türkiye runs through numerous densely populated regions, including the city of Düzce that was recently hit by an Mw 6.1 earthquake on 23 November 2022. This was the first moderate event in the region after the devastating Mw 7.2 earthquake in 1999, which cost the lives of over 700 people. Despite its moderate size, the earthquake caused unexpected severe damage to a significant number of buildings, as reported by local institutions (Disaster and Emergency Management Presidency, AFAD). It is well established that ground motions in the near field can lead to increased damage due to near-field domain effects, such as ground-motion pulses and directivity effects (i.e., when the site is aligned with rupture propagation). We examine potential near-field effects using the strong ground motion database of AFAD-Turkish Accelerometric Database and Analysis Systems. To achieve this, we first analyze the behavior of the ground-motion intensities in terms of their spatial distribution and observe higher peak ground velocity than expected by ground-motion models in spatially constrained azimuthal ranges. Furthermore, we find that the majority of the near-fault recordings contain velocity pulses that are primary concentrated on the fault-parallel component. This outcome questions the widely accepted understanding from the previous studies, which mainly suggested that impulsive ground motions that are associated with directivity effects primarily occur on the fault-normal component of large-magnitude events.
A Study of Innovative Class Imbalance Dataset Software Defect Prediction Methods
Authors: Hosen Md Saikat , Gutlapalli Sai Srujan
Published: October 2023

Data mining for software defect prediction is the best approach for detecting problematic modules. On-hand classification methods can speed up knowledge discovery on class balance datasets. Actual facts are not balanced since one class dominates the other. These are class imbalances or skewed data sources. As class imbalance increases, the fault prediction rate decreases. For class imbalance data streams, the suggested algorithms use unique oversampling and under-sampling strategies to remove noisy and weak examples from both the majority and minority. We test three techniques on class imbalance software defect datasets using four assessment measures. Results indicate that class-imbalanced software defect datasets can be solved.
Situación actual de la coeducación en la escuela
Authors: Leon Hernandez Irati , Gamito Gomez Rakel , Martinez Abajo Judit , Vizcarra Morales María Teresa
Published: October 2023

Tener en cuenta la perspectiva de género es fundamental para acabar con la transmisión del sexismo. Por ello, es prioritario revisar los libros de texto, su lenguaje, los materiales didácticos y los valores que se les asocian. Las identidades de género siguen siendo cuestionadas y multitud de voces denuncian que aún queda mucho por hacer en los centros escolares para llegar a lograr una igualdad real. Este estudio quiere conocer la situación del uso del lenguaje no sexista en el aula y la adecuación de los materiales didácticos utilizados en el ámbito escolar. Se trata de un estudio de caso, en el que han participado un total de 530 personas mediante un cuestionario dirigido al profesorado y a los equipos directivos y siete grupos focales realizados con profesorado, familias y alumnado. Los resultados desvelan que aún falta conciencia para utilizar un lenguaje no sexista real en el proceso de enseñanza y que en la elección de los materiales didácticos no siempre prima el criterio de igualdad. Como conclusión, se subraya que es necesario adoptar mayores medidas de sensibilización e intervención para que la igualdad sea una prioridad en la formación inicial y continua del profesorado.
Using Multicriteria Statistical Analysis for Interpreting the Spatiotemporal Fluctuations of Surface Water Quality in the Vietnamese Mekong Delta Province
Authors:   the Department of Environmental Sciences, Cantho University, Vietnam, Thuan Nguyen Cong , Khanh Huynh Cong
Published: October 2023

This study evaluated variations in surface water quality indicators within the rivers and canals of Tien Giang province in the Vietnamese Mekong Delta. Water samples were collected at 34 locations, in the months of March, June, September, and November in 2021. Water quality was assessed through comparison with the National Technical Regulation on surface water quality (QCVN 08-MT: 2015/BTNMT, column A2). The pollution source was forecast using principal component analysis (PCA), whilst the similarity in water quality between locations was evaluated through cluster analysis (CA). Results show that surface waters were contaminated with organic matter, suspended solids, and nutrients. There was clear temporal pattern between rainy season (September and November) and dry season (March and June). PCA analysis predicted six pollution sources of which the three main sources were PC1, PC2, and PC3, explained 59.9% of variation in water quality. The parameters of temperature, biological oxygen demand, chemical oxygen demand, dissolved oxygen, total nitrogen, total suspended solids, nitrite, and sulfate exhibited influence on water quality. The CA results suggest that the 34 monitoring locations can be reduced to 29 locations, which would result in a 14.7% saving in monitoring costs. The results can be used to reevaluate the location and monitoring criteria for surface water quality in Tien Giang province.
The Effect of Acetic Acid and Hydrochloric Acid as a Solvent for Chitosan to Reduce Turbidity in Eutrophic Water
Authors:   Chemistry Department, Faculty of Mathematics and Natural Sciences, Lambung Mangkurat University and Water Treatment Research Group FMIPA ULM, Banjarbaru, Indonesia, Irawati Utami , Hikmah Fauziah A. , Junaidi Ahmad B.
Published: October 2023

In this research, the potential of chitosan as a coagulant to reduce the turbidity of eutrophic water was investigated. To examine the possible effect of the solvent of chitosan on its performance in reducing the turbidity of eutrophic water, different types of acid, i.e. acetic acid and hydrochloric acid, were used to dissolve chitosan, in which the concentration of each acid was also varied. The chitosan dissolved in acetic acid was labeled as Chit-AA while the one being dissolved in HCl was labeled as Chit-HCl. A standard jar test apparatus was used to determine the optimum dosage and coagulation pH for both Chit-AA dan Chit-HCl. Both Chit-AA and Chit-HCl gave optimum results at a dosage of 10 mg/L, where the turbidity reductions after coagulation with Chit-AA and Chit-HCl were 64.78% and 85.33%, respectively. The optimum coagulation pH for Chit-AA was pH 7 while Chit-HCl gave an optimum result at pH 8. The concentration of the acid being used to dissolve chitosan appeared to affect the decrease in turbidity, where a higher acid concentration lead to a higher decrease in turbidity.
Development of Ambiance Air Recirculation Unit for Air Quality Monitoring in Lecture & Laboratory Rooms
Authors:   the College of Engineering and Architecturel, Bataan Peninsula State University, Philippines, Andres Nelson S. , Rodriguez Angelo N. , Martinez Dan William C. , Rivera Cristina G. , Tria Albert C. , Magbag Cunard Kristoper B.
Published: October 2023

This study focuses on the purification and monitoring of indoor air pollution aided with UV light radiation intended for laboratory and lecture rooms in Bataan Peninsula State University. The developed air recirculation prototype utilizes Arduino integrated development environment (IDE) software with two air quality sensors namely, BME680 and PMS5003, which send signals to relay to control the purification and monitoring operations. As a monitoring device, the prototype is capable of displaying real time air quality measurements as well as pollutant concentrations. The measured data control the purification process which activates only at acceptable range of indoor air quality (IAQ) allowing the prototype to conserve energy. Two approaches on monitoring accuracy were done with respect to the distance of prototype sensors to the air quality tester. While for the effectiveness of purification process, a five-minute recalibration speed on smoke tests were conducted. This study aimed to help in reducing the intake of harmful air on the human body that causes cardiovascular diseases, respiratory problems and even viruses, more particularly in indoor environments like laboratory and lecture rooms.
Students' Pre- and Post-COVID-19 Perception of Mathematics Videos in Higher Education
Authors:   CIICESI, Escola Superior de Tecnologia e Gestão, Politécnico do Porto, Portugal, Costa Sidonie F. , Borges Ana I.
Published: October 2023

Educational videos have been an increasingly used tool in education, accentuated not only by the rapid growth of the Internet and mobile technologies but also by the Coronavirus disease 19 pandemic. Following this trend, the b-Learning Mathematics course b-Mat@plicada was created in 2015 for Higher Education students and has evolved to extend the course and improve the quality of the available contents. This evolution was influenced by some studies that have been made since the first year of implementation. The main objective of this work is to evaluate the influence of the Coronavirus disease 19 pandemic on the students’ perceptions and attitudes toward the learning videos available on the course b-Mat@plicada and, also, on the Internet. At the end of the year 2022, 104 higher education (HE) students responded to a satisfaction survey about the use of learning videos to study and the contents of the b-Mat@plicada course. By using descriptive statistics and independent Chi-square tests, the responses were analyzed and compared with other results obtained in 2015 and 2018, that is, before the pandemic. The findings indicate that there has been a rise in the demand for b-Mat@plicada educational videos and for videos available on the Internet in general. Also, students perceived an improvement in the quality of the videos since the pre-pandemic period. Additionally, students now consider online videos more useful than before the pandemic. However, they still view them as supplementary rather than a primary learning source.
Research on Influencing Factors of Distance Learning Behavior Intention in Virtual Experimental Environment
Authors:   School of Humanities, Jiangnan University, China, Sun Li , Xu Danyang
Published: October 2023

In distance education, virtual labs conduct a paramount role in the construction and development of practical engineering majors. In turn, the behavioral intention of distance learners’ willingness to use it determines whether virtual labs can be well used and promoted. For the sake of deeply understanding the factors which may exert certain influence on behavioral intention, this paper constructed a model of factors affecting behavioral intention of distance learning in virtual lab environment on the Unified Theory of Acceptance and Use of Technology (UTAUT), and conducted an empirical investigation study on 425 learners. As conspicuously revealed by the research findings, effort expectation, performance expectation, community influence, concrete experience, abstract conceptualization, active practice, and interactivity of the experimental platform can impose positive effects on learners’ intention to use the virtual experimental platform. Aside from that, both reflective observation and imagination cannot remarkably affect behavioral intention. What’s more, concrete experience has the most noticeable effect on behavioral intention.
LAS CALAVERAS ENMASCARADAS DE LAS MOMIAS YUKO - YUKPA (MOTILONES)
Authors: Sotomayor Tribín Hugo , Correal Urrego Gonzalo
Published: October 2023

Se presenta el estudio antropométrico de ocho (8) calaveras de sendas momias Yuko, y químico y escanográfico de una de ellas, caracterizadas por tener máscaras fúnebres y en las que en algunas de ellas a las órbitas oculares les fueron colocadas unas semillas y sobre éstas unos círculos huecos de concha. Se discute sobre el material de estas máscaras y su significado social.
BALANCE GEOQUÍMICO PARA LACUENCA ALTA DEL RÍO MEDELLÍN,CORDILLERA CENTRAL(ANTIOQUIA, COLOMBIA)
Authors: Osorio Juan Carlos , López-Rendón Jorge E. , Hermelin Michel
Published: October 2023

El balance geoquímico para la cuenca alta del río Medellín – Porce (Antioquia) se obtuvo a partir de ensayos químicos y físicos en muestras de agua lluvia y de escorrentía recolectadas aproximadamente cada 15 días entre el 04/07/00 y el 16/02/01. Se encontró un equilibrio en las concentraciones de los iones en el río Medellín tanto en la temporada seca como en la húmeda. Se estimó que la escorrentía aporta el 88% de los principales sólidos disueltos que salen de la cuenca (H CO , SiO , Ca+2, Na+, Mg+2, K+), que el orden de movilidad relativa es: Ca>Mg>SiO >Na>K y que el porcentaje de Mg disuelto duplica los promedios mundiales para aguas que drenan rocas plutónicas y metamórficas. La tasa de meteorización de la sílice fue de ~138 kg/ha/año, y de ~48 kg/ha/año para la suma de los principales cationes mayores disueltos.
EL PROBLEMA RESTRINGIDO DE LOS TRES CUERPOS POR SERIES DE LIE
Authors: Portilla José Gregorio
Published: October 2023

A partir de las ecuaciones diferenciales que describen el movimiento de una partícula de masa infinitesimal sometida al campo gravitacional newtoniano de dos masas comparables que giran mutuamente en órbitas circulares alrededor de su centro de masas común (problema restringido circular de los tres cuerpos), se logra por medio de un operador de Lie, establecer soluciones que permiten hallar expresiones algebraicas recurrentes las cuales se utilizan para determinar las componentes de los vectores posición y velocidad en términos de series de Lie. Se presenta una comparación entre la solución por integración numérica directa y la solución por series de Lie.
Educação e Aprendizado no Ensino Remoto Emergencial: um Relato de Caso da Percepção dos Alunos na Pandemia de Covid-19
Authors: Lima Alyne Cristina Sodré , Silva Junior José Leonilson Abreu da , Tavares Lorena Cunha , Castro Ícaro Rainyer Rodrigues de
Published: October 2023

Objetivou-se com este estudo embasar discussões com base na percepção dos alunos sobre estratégias de ensino, além de considerar aspectos do acesso a tecnologias e ao material alternativo de ensino fornecido aos alunos. Para possibilitar o acesso ao conteúdo letivo previsto, durante a pandemia, foram elaborados cadernos de revisão no primeiro bimestre do ano letivo de 2020, no nível médio técnico. Foram atendidos 135 estudantes, realizou-se a coleta de informações referente às condições de estudo diante do material oferecido pela instituição. Enviamos o questionário via e-mail, WhatsApp e redes sociais. O questionário continha perguntas sobre o acesso a dispositivos eletrônicos/internet, moradia, interação dos alunos com o material, experiências e percepções no novo modelo de repasse de conteúdo, e informações sobre o processo de assimilação. Os dados obtidos foram analisados através de estatística descritiva. Mais de 80% dos entrevistados residiam na zona urbana da cidade e tinham acesso à internet pelo celular próprio. Contudo, apenas 60% estudaram e realizaram as atividades. A maior dificuldade observada foi na execução dos estudos na área técnica e que envolviam cálculos, principalmente devido à ausência do professor. Apesar dos entraves, mais de 65% dos alunos sugeriram a permanência do material. A utilização do caderno de revisão foi uma estratégia de ensino satisfatória para mitigar, de forma emergencial, os prejuízos ocasionados pela suspensão das aulas na modalidade presencial devido à pandemia.
 
Palavras-chave: Educação na Amazônia. Ensino médio. Ensino técnico.
 
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A Usabilidade de Recursos Tecnológicos Digitais: A Perspectiva de um Curso de Extensão Universitária Atrelado à Formação Inicial
Authors: Liao Tarliz , Almeida Sonia Regina Mincov de , Motta Marcelo Souza , Honorato Vinícius dos Santos , Kozerski Wellington Luiz
Published: October 2023

Norteamos este artigo por dois objetivos principais: a descrição da funcionalidade dos recursos tecnológicos propostos em um curso de extensão na modalidade da Educação a Distância junto a um grupo de graduandos de licenciatura em Matemática provenientes de instituições privadas e públicas do Estado do Rio de Janeiro e, na reflexão da interatividade entre esses estudantes e as tecnologias utilizadas. Para tanto, iremos nos ancorar nos pressupostos teóricos que trazem suas discussões acerca dos conceitos de formação inicial de professores de Matemática e suas práticas formativas na extensão, de modo a colaborar na consolidação do debate do efeito de uma formação complementar paralela ao período de graduação. Refletiremos ainda a discussão promovida pela necessidade do suporte das tecnologias digitais (TD) na execução de cursos de extensão, que se constituem cada vez mais em meio digital. No sentido de redarguir a essa investigação, nos propomos a descrever como o funcionamento de tais recursos tecnológicos amparou o curso de extensão, em especial a usabilidade da plataforma GeoGebra enquanto ferramenta capaz de potencializar conceitos geométricos imprescindíveis a formação inicial dos licenciandos de Matemática. Dessa forma, a pesquisa da qual originou esse artigo tem sua natureza qualitativa imersa em uma abordagem explicativa. Acrescentamos que esse tipo de abordagem investiga algo novo na perspectiva da articulação de ideias e busca compreender causas e efeitos de determinado fenômeno. Enquanto resultados apontamos para a (res)significação de alguns conceitos fundamentais das geometrias (plana e espacial), após a participação dos cursistas curso de extensão.
 
Palavras-chave: Usabilidade. Formação de professores tecnologias digitais. Ensino de matemática.
Workplace Spirituality and Turnover Intentions: Mediating Role of Job Satisfaction
Authors: Sreeja Thupili , Mukherjee Ujjal , Jagadeeswari Itam Urmila
Published: October 2023

The voluntary staff turnover problem is a significant challenge for the IT industry. This study examines how workplace spirituality affects IT workers' job happiness and quitting intentions. Data was gathered from 302 IT organisation employees using the "Temporal separation" method, which addresses common method variance bias, to assure accurate results. To analyse and evaluate the hypotheses, the researchers used Confirmatory Factor Analysis (CFA) and Structural Equation Modelling (SEM). According to the research’s conclusions, job happiness fully mediates the association between workplace spirituality and employees' intention to leave. Industry practitioners should prioritize fostering workplace spirituality by promoting positive interpersonal relationships and meaningful job designs, as well as establishing an organizational culture centered on the organization's vision and mission. This study offers potential solutions to IT industry practitioners who struggle with managing attrition.
Linkage of Digitalization and Perceived Organizational Performance of Small and Medium Enterprises
Authors: Latha K. , Sulaiman E. , Yohannan Siby
Published: October 2023

The purpose of this empirical research is to assess the impact of digitalization on perceived organisational performance in all areas of Small and Medium Enterprises (SMEs) in India’s rubber products manufacturing industry. The study employs a quantitative research method with an explanatory research design. The study’s primary data is gathered through surveys of top-level officials and IT managers from SMEs in the rubber products manufacturing industry. The normality and reliability of the data are assessed first using SPSS 22, followed by assessments of internal consistency, divergent validity, convergent validity, and discriminant validity using maximum likelihood estimation of the CFA. The structural equation modelling approach was chosen as the statistical instrument that enables researchers to look at complex interactions between several variables in parallel based on the nature of the research questions, the data that are available, and the theoretical underpinnings of the study. It is identified through this study that major digital technology measures such as Usefulness of Web Portals (UWP), Customer Interface through Web Portals (CIWP), and Major Functionalities of Web Portal (MFWP), Use of Online Activities in Marketing Efforts (OAME), Online Advertisements and Promotion (OAP), Availability of Trained and Skilled Employees (ATSE), and Technological Resources (TR) have a statistically significant impact on the performance of SMEs. The study results provide policymakers with insights into how to provide special incentives and exemplary services to SMEs in order to promote the digitalization in the rubber products manufacturing industry. This study expands the scope of the investigation of the adoption and diffusion of digital technology by measuring the impact of a broad range of digital technologies on SMEs.
Развитие самооценки и рефлексивных навыков обучающихся при анализе художественного произведения
Authors: Лоренц В.В. , Селютина Д.Д. , Карабинерова К.В.
Published: October 2023

В статье проанализировано художественное произведение У.Э. Моэма «Падение Эдварда Барнарда» с точки зрения воспитательного воздействия на становление и развитие подростков, на формирование их мировоззрения и социального поведения. В статье рассмотрены стилистические приемы литературного текста, оказывающие воздействие на читателя. Авторы исследуют возможности и пути анализа текста с целью обогащения рефлексивного компонента регулятивных учебных действий школьников, направленных на самовоспитание, самореализацию и самосовершенствование.
A Study on the Antioxidant, Antibacterial Activity, and Whitening Effects of Lithospermum Root Extract
Authors:   The Korean Society of Beauty and Art, Kim Mee-Kyung
Published: October 2023

To improve the utilization value of Lithospermum Root as a cosmetic material, the study investigated the antioxidant, antibacterial activity, intracellular tyrosinase activity, and melanin biosynthesis inhibitory effects of an Lithospermum Root ethanol extract. As a result, the antioxidant effect showed a 72.5% free radical scavenging at a concentration of 10,000 μg/ml, and the free radical scavenging (FSC)50 value was 4815.90 μg/ml. The antibacterial activity showed an inhibitory effect on all skin flora, S. epidermidis (9.3-14.6 mm), E. coli (10.7-14.6 mm), and P. acnes (9.5-15.2 mm). The viability of B16-F10 cells ranged from 104.9% to 110.1% up to a concentration of 1,000 μg/ml, and a whitening experiment was performed based on this result. At a concentration of 1,000 μg/ml, the intracellular tyrosinase activity inhibition rate was 37.28%, and the melanin synthesis inhibition rate was 30.09%. As a result, it was confirmed that the Lithospermum Root ethanol extract has a significant effect on antioxidant, antibacterial activity, and whitening, and thus has high utilization value as a functional whitening raw material for cosmetics. In the future, analysis of the physiologically active components of the ethanol extract of Lithospermum Root, verification of the efficacy of each component's whitening action, and mechanism studies will be considered necessary.
Analysis of Spring Flower Image-based Hair Art
Authors:   The Korean Society of Beauty and Art, Lim Soon-Ja
Published: October 2023

This study attempted to add formative aspects to hair art from the perspective of fine arts by broadening a scope of its creativity by establishing its concept and research classification and creating diverse works and make hair art accepted as a part of new art expressions. If nature is recognized as the parent of art, the beauty of art is being formed after art is shaped with the genetic beauty of nature. In this study, three different styles were created based on the images of spring flowers, using the fancy colors, symbolicity and shamanistic meaning of flowers with a goal of generating visual effects and enhancing marketability from a creative and unique hairstyling perspective. For this, hairstyles were created through design development, color sampling and styling in consideration of design intention and methods. It was possible to create gorgeous hairstyles with new motives to generate visual effects and marketability by using diverse techniques such as strewing, attaching, coating and extending. “Based on the results of this study, future research on creative and vivid hair art is expected while exploring various expression methodologies.”
A study on Nail Design Using Formative Properties of Dior Fashion: Focusing on Maria Grazia Chiuri‘s Fashion Design
Authors:   The Korean Society of Beauty and Art, Song Hye-Min , Shim Jae-Sook
Published: October 2023

Nail design is a means of expressing aesthetic personality, featuring artistic, creative and functional aspects simultaneously. As it is recognized as a fashion element, consumer needs and expectations have gradually increased. With diverse expressions, nail design has led trends and evolved into attractive capital. In manicures which can make a person look clean and neat and achieve both physical and mental satisfactions in daily lives, people have become aware of the importance of nail care. This study attempted to investigate the formative aspects of fashion by combining fashion and nail and examine nail styles based on fashion design elements. In the fashion design of Christian Dior, nail works were created, using 2020-21 F/W Haute Conture design to overcome the limitations of nail design through Maria Grazia Chiuri, a creative director of Christian Dior. In terms of design elements, shape, color and modeling factors were reviewed. Based on the results, then, nail design was conceptualized. After illustration, a total of 3 works were created. A total of 10 super long square tips and super long oval tip sets were designed in three different themes such as gel nail, embossing powder, 2D/3D and painting gel.
A Study on the Characteristics of YouTube Contents with Cover Makeup for Characters in Movies & Dramas: Focusing on Risabae's Cover Makeup
Authors:   The Korean Society of Beauty and Art, Yun Sei-Hee
Published: October 2023

This study attempted to investigate the characteristics and meaning of cover makeup by focusing on cover makeup YouTube contents on characters from TV series and movies with a goal of exploring the significance and enjoyment factors of cover makeup contents and suggest a new perspective on the production of makeup contents. For this, the makeup contents of RISABAE, an influential makeup artist and beauty creator having a lot of contents, were analyzed, and the results found the followings: To create cover-makeup contents and improve their completeness, a beauty creator’s observation skill, character analysis ability, high makeup skill, ability to create a character through facial expressions or behavior and image-directing skill are required. These elements can be used in enjoying all contents. According to a review of the characteristics of cover makeup and contents, the followings were obtained: 1) character representation, 2) makeup synchronization rate, 3) enjoyer’s multifaceted participation.
Behaviour of cyclists and pedestrians near right angled, sloped and levelled kerb types: Do risks associated to height differences of kerbs weigh up against other factors?
Authors: Janssen Bas , Schepers Paul , Farah Haneen , Hagenzieker Marjan
Published: October 2023

To create a safer environment for bicyclists and pedestrians, the usefulness of different types of kerbs as a separation between these two modes has been questioned by both researchers and practitioners. Right angled kerbs pose risks to cyclists due to their height but are assumed to separate them well from pedestrians. Sloped and levelled kerb types are more forgiving but allow road traffic users to move onto each other’s infrastructure, creating a potential risk of collision. We examined the effects of different types of kerbs on cyclists’ and pedestrians’ behaviour. This is operationalized as a road user moving onto another traffic user’s infrastructure (i.e. crossing the kerb). A total of 14,502 bicyclists and 3,578 pedestrians at 12 different locations in Amsterdam were observed. We also examined the motives for crossing the kerb, and some smaller studies were carried out on corners and intersections and in some other Dutch cities for making comparisons. The results show that cyclists moving on the sidewalk is a relatively rare event for all kerb types and no conflicts between cyclists and pedestrians were observed. We therefore consider it unlikely that the risks of the height difference weigh up against the advantages in terms of separating cyclists and pedestrians. Thus, in the ambition of separating bicyclists from pedestrians as well as designing a ‘forgiving’ kerb to accept that people make mistakes, both the sloped and levelled kerb types come out as best practice.
critical assessment of discounting policies for transport Cost-Benefit Analysis in five European practices
Authors: Mouter Niek
Published: October 2023

Cost-Benefit Analysis (CBA) has a long tradition as a broadly-used instrument for assessing transport infrastructure investments. In a CBA, the discount rate often determines whether a project passes the benefit-cost test. One concern is that literature on the subject offers widely differing recommendations regarding which discount rate should be used. What has not yet been studied is the way practitioners translate these (inconclusive) recommendations into the discounting policies applied to transport CBA. This paper aims to bridge this gap by analyzing how the rationales and arguments for underpinning discounting policies provided in literature are translated into five practices: the Netherlands, the United Kingdom, Norway, Sweden and Denmark. It does so by studying the countries’ transport appraisal guidelines and interviewing experts. This study observes that the five practices attempt to fully substantiate the discount rate in empirical results from (academic) studies. However, apart from empirical evidence, discounting policies in the five countries are based on practical arguments, politicaladministrative arguments and judgmental arguments. In some cases these judgments are inevitable because the empirical evidence is inconclusive, but in other cases discretionary decisions are made without any references to empirical evidence. The most important conclusion of this study is that both the political-administrative arguments and judgmental arguments are not – or are poorly – communicated in the guidelines of the five countries. This makes it difficult for the user of the CBA to decide whether s/he agrees with the reasonableness of the judgments. Finally, this study discusses solutions to improve the transparency of discounting policies.
Effect of dynamic route guidance on urban traffic network under Connected Vehicle environment
Authors: Liu Zhao , Guo Jianhua , Chen Lei , Wei Yun , Huang Wei , Cao Jinde
Published: October 2023

Although Connected Vehicle technology is developing rapidly, connected vehicles (CV) are going to mix with the traditional vehicles (i.e., non-connected vehicles) for a long time. The effects of deploying CV on urban traffic systems are actually not clear. The main objective of this study is to evaluate the potential effects of route guidance under connected vehicle environment on an urban traffic network in terms of traffic mobility and safety. Microscopic simulation approach is used to conduct CV environment simulation and the rolling horizon approach is used for information updating among the connected vehicles. Meanwhile, driving behavior is modeled through aggressiveness and awareness of drivers. Traffic mobility for the road network was measured by average trip time and average vehicle trip speed. A surrogate measure, i.e., the time-to-collision involved incident rate for one kilometer driven, was used to assess the safety of the road network. Based on a real urban traffic network, the impacts of market penetration levels of connected vehicles and information updating intervals were studied. Simulation results showed that market penetration level of connected vehicles has little impact on the mobility and safety of road network. In addition, according to the simulation conducted in this paper, shorter updating interval is shown to be likely to lead to better mobility, while the safety of road network is likely to decline, under the assumptions embraced in the simulation. By contrast, the simulation also showed that longer updating interval is likely to lead to better safety and decreased mobility.